Academic literature on the topic 'Peas Residues'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Peas Residues.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Peas Residues"
1
KUMAR, KULDIP, K. M. GOH, W. R. SCOTT, and C. M. FRAMPTON. "Effects of 15N-labelled crop residues and management practices on subsequent winter wheat yields, nitrogen benefits and recovery under field conditions." Journal of Agricultural Science 136, no. 1 (February 2001): 35–53. http://dx.doi.org/10.1017/s0021859600008522.
Full textAbstract:
Nitrogen-15 enriched ammonium sulphate was applied to micro-plots in a field in which two leguminous (white clover and peas) and two non-leguminous (ryegrass and winter wheat) crops were grown to produce 15N-labelled crop residues and roots during 1993/94. Nitrogen benefits and recovery of crop residue-N, root-N and residual fertilizer-N by three succeeding winter wheat crops were studied. Each crop residue was subjected to four different residue management treatments (ploughed, rotary hoed, mulched or burned) before the first sequential wheat crop (1994/95) was sown, followed by the second (1995/96) and third wheat crops (1996/97), in each of which residues of the previous wheat crop were removed and all plots were ploughed uniformly before sowing. Grain yields of the first sequential wheat crop followed the order: white clover > peas > ryegrass > wheat. The mulched treatment produced significantly lower grain yield than those of other treatments. In the first sequential wheat crop, leguminous and non-leguminous residues supplied between 29–57% and 6–10% of wheat N accumulated respectively and these decreased with successive sequential crops. Rotary hoed treatment reduced N benefits of white clover residue-N while no significant differences in N benefits occurred between residue management treatments in non-leguminous residues. On average, the first wheat crop recovered between 29–37% of leguminous and 11–13% of non-leguminous crop residues-N. Corresponding values for root plus residual fertilizer-N were between 5–19% and 2–3%, respectively. Management treatments produced similar effects to those of N benefits. On average, between 5 to 8% of crop residue-N plus root and residual fertilizer-N was recovered by each of the second and third sequential wheat crops from leguminous residues compared to 2 to 4% from non-leguminous residues. The N recoveries tended to be higher under mulched treatments especially under leguminous than non-leguminous residues for the second sequential wheat crop but were variable for the third sequential wheat crop. Relatively higher proportions of leguminous residue-N were unaccounted in ploughed and rotary hoed treatments compared with those of mulched and burned treatments. In non-leguminous residue-N, higher unaccounted residue-N occurred under burned (33–44%) compared with other treatments (20–27%).
2
Michaud, Marie-Hélène, Joseph Makhlouf, Nicolas Tremblay, and André Gosselin. "PESTICIDE RESIDUES ON FRESH AND PROCESSED VEGETABLES." HortScience 26, no. 5 (May 1991): 482h—483. http://dx.doi.org/10.21273/hortsci.26.5.482h.
Full textAbstract:
A research project was undertaken in 1990 with the objective of improving both quality and productivity of peas, beans and sweet corn grown and processed in Quebec (Canada). It was conducted with the technical and financial help of five proccessing companies. Cultivar trials were undertaken as part of this project together with an evaluation of commercial practices in the areas of pest control, fertilization and crop management. Samples of fresh and processed products were analysed for nutritional quality and pesticide residues. During this presentation we will show preliminary results of the pesticide residue analyses and will compare fresh and processed products. So far, determination of dimethoate, trifluralin and bentazone (peas), azinphosmethyl and permetrin (beans) and cypermetrin (sweet corn) showed no concentration exceeding the Canadian norm (<0, 1mg/kg), with the exception of a bean field with azinphosmethyl residues. Canning and freezing operations greatly reduced pesticide residues so that all processed samples tested below detectable levels.
3
Cairns, Thomas, Emil G. Siegmund, Gregory M. Doose, and Andrew C. Oken. "Snow peas and acephate. Confirmation of illegal pesticide residues." Analytical Chemistry 57, no. 4 (April 1985): 572A—576A. http://dx.doi.org/10.1021/ac00281a002.
Full text
4
George, Donald A. "Permethrin and Its Two Metabolite Residues in Seven Agricultural Crops." Journal of AOAC INTERNATIONAL 68, no. 6 (November 1, 1985): 1160–63. http://dx.doi.org/10.1093/jaoac/68.6.1160.
Full textAbstract:
Abstract Metabolite residues of permethrin are not reported in the literature for most agricultural crops. This paper reports residues of permethrin and its 2 metabolites (dichlorovinyl acid and metaphenoxybenzyl alcohol) in 7 different agricultural crops (Chinese cabbage, spinach, asparagus, raspberries, green peas, turnip roots, and turnip greens). Permethrin residues declined approximately 85% within 7 days after treatment in all crops. In most cases, the acid metabolite residues peaked at 3 days, and declined after that. Translocation of residues into turnip roots was very slight; the average was less than 0.05 ppm for permethrin and alcohol metabolite residues and none was detected for the acid metabolite residue. Permethrin residues in the turnip greens averaged approximately 2 ppm for the 0.112 kg ai/ha treatment, and 6 ppm for the 0.224 kg ai/ha treatment.
5
Rahman, A., C. A. Dowsett, M. R. Trolove, and T. K. James. "Soil residual activity and plantback periods for the herbicides saflufenacil and topramezone." New Zealand Plant Protection 67 (January 8, 2014): 298–303. http://dx.doi.org/10.30843/nzpp.2014.67.5729.
Full textAbstract:
To quantify soil residual activity and plantback periods for two maize herbicides saflufenacil and topramezone different rates were applied to a cultivated soil and samples (05 cm) collected at regular intervals for glasshouse bioassays Phytotoxic residues of saflufenacil applied at 17 g ai/ha the rate used for conservation tillage and pasture renovation persisted in the soil for lt; 2 weeks for the susceptible species viz white clover onion carrot and radish Residual activity from 102 g ai/ha the rate recommended for maize dissipated within 4 weeks for all species Wheat ryegrass carrot squash onions and tomato were not affected by topramezone residues from rates up to 202 g ai/ha in soil collected 2 weeks after treatment (WAT) However peas white clover and radish all suffered damage in samples collected 2 WAT By 4 WAT only white clover and peas exhibited minor phytotoxicity
6
Bailey, P., and J. Comery. "Management of Heliothis punctigera on field peas in south-eastern Australia." Australian Journal of Experimental Agriculture 27, no. 3 (1987): 439. http://dx.doi.org/10.1071/ea9870439.
Full textAbstract:
Cypermethrin was found to be an effective substitute for DDT in controlling Heliothis punctigera in field peas. A single spray of cypermethrin prevented significant damage by larvae to field peas in trials in South Australia and Victoria over 3 seasons. Endosulfan was not as effective as cypermethrin. Bioassays of leaf discs dipped in cypermethrin showed that residues of 0.1 mg a.i. kg-1 caused 50% feeding inhibition, 0.43 mg a.i. kg-1 caused 90% feeding inhibition and concentrations above this caused increasing acute mortality to fourth instar larvae. Residues from field pea crops sprayed at 40 g a.i. fell to 0.43 mg a.i. kg-1 2-3 weeks after application. Two to 3 weeks protection is probably the maximum time for residual activity to be useful because the crop outgrows the sprayed foliage. To ensure that larvae are exposed to the maximum area of treated surface, the spray should be timed to coincide with the appearance of larvae in the crop, rather than spraying at a particular growth stage of the crop.
7
PANFILOVA, Antonina. "Influence of stubble biodestructor on soil microbiological activity and grain yield of winter wheat (Triticum aestivum L.)." Notulae Scientia Biologicae 13, no. 4 (November 16, 2021): 11035. http://dx.doi.org/10.15835/nsb13411035.
Full textAbstract:
The aim of the work was to improve soil fertility and increase the yield of winter wheat using the stubble biodestructor by activating the microbiological activity of the soil. The experimental studies were on the research field of Mykolayiv National Agrarian University (Ukraine). After harvesting the precursor cultures of spring barley and peas the post-harvest residues of these crops were treated with a stubble biodestructor. After treatment of crop residues of spring barley and pea by the stubble biodestructor in the soil layer of 0 up to 20 cm the quantity of cellulose-destructive microorganisms increased by 27.9·105 up to 36.0·105 cfu/g of soil depending on the predecessor culture and the degree of degradation of these residues increased by 31.4 up to 45.1%. The number of nitrogen fixators in the 0-10 cm soil layer grew under the action of treatment of crop residues of spring barley and peas by stubble biodestructor on 13.4 up to 14.1 ·106 cfu/g of soilor 30.3 up to 35.0%. At the same time, a somewhat large number of bacteria in the soil was determined by the processing of post-harvest residues of peas, which was due to the biological characteristics of this legume culture. The average for years of researches at cultivating of winter wheat after spring barley using the stubble biodestructor the grain yield increased by 0.45 t ha–1, or 20.9%, and after pea it increased by 0.67 t ha–1 or 18.8% compared to the treatment variant of stubble just with water.
8
Theander, Olof, Per Åman, Eric Westerlund, Roger Andersson, and Dan Pettersson. "Total Dietary Fiber Determined as Neutral Sugar Residues, Uronic Acid Residues, and Klason Lignin (The Uppsala Method): Collaborative Study." Journal of AOAC INTERNATIONAL 78, no. 4 (July 1, 1995): 1030–44. http://dx.doi.org/10.1093/jaoac/78.4.1030.
Full textAbstract:
Abstract A joint AOAC/American Association of Cereal Chemists (AACC) collaborative study was conducted to determine by the Uppsala method the dietary fiber content and its composition in various foods. The method includes preparation of a residue by treatment with thermostable α-amylase and amyloglucosidase and then ethanol precipitation of solubilized dietary fiber components while leaving low-molecular weight carbohydrates in solution. After acid hydrolysis of residue, neutral polysaccharide residues are determined as alditol acetates by gas-liquid chromatography, uronic acid residues are determined by colorimetry, and ash-free acid-insoluble residue (Klason lignin) is determined gravimetrically. Total dietary fiber, including enzyme-resistant starch, is calculated as the sum of nonstarch polysaccharide residues and Klason lignin. Nine laboratories completed the study, analyzing in duplicate 8 unknown dried products that included 4 cereal products, green peas, potato fiber, carrots, and apples. Total dietary fiber contents of products tested ranged from 4.6 to 84.3%, with an average RSDR value of 8.4% (range, 4.8–11.1%). Total neutral polysaccharide residues ranged from 3.8 to 64.1%, with an average RSDR value of 7.5% (range, 5.4–10.5%). Individual neutral sugars (rhamnose, arabinose, xylose, mannose, galactose, and glucose) and uronic acid residues present at more than 1% generally had good RSDR values (3.3– 22.8%), whereas, as expected for Klason lignin, only the wheat bran sample with a high content (16%) had an excellent RSDR value (5.0%). The gas chromatographic-colorimetric-gravimetric method (Uppsala method) for determination of total dietary fiber (as neutral sugar residues, uronic acid residues, and Klason lignin) has been adopted first action by AOAC INTERNATIONAL.
9
Zhang, D. L., K. C. Ehrlich, P. C. Supakar, and M. Ehrlich. "A plant DNA-binding protein that recognizes 5-methylcytosine residues." Molecular and Cellular Biology 9, no. 3 (March 1989): 1351–56. http://dx.doi.org/10.1128/mcb.9.3.1351-1356.1989.
Full textAbstract:
A novel, 5-methylcytosine-specific, DNA-binding protein, DBP-m, has been identified in nuclear extracts of peas. DBP-m specifically recognizes 5-methylcytosine residues in DNA without appreciable DNA sequence specificity, unlike a mammalian DNA-binding protein (MDBP), which recognizes 5-methylcytosine residues but only in a related family of 14-base-pair sequences.
10
Zhang, D. L., K. C. Ehrlich, P. C. Supakar, and M. Ehrlich. "A plant DNA-binding protein that recognizes 5-methylcytosine residues." Molecular and Cellular Biology 9, no. 3 (March 1989): 1351–56. http://dx.doi.org/10.1128/mcb.9.3.1351.
Full textAbstract:
A novel, 5-methylcytosine-specific, DNA-binding protein, DBP-m, has been identified in nuclear extracts of peas. DBP-m specifically recognizes 5-methylcytosine residues in DNA without appreciable DNA sequence specificity, unlike a mammalian DNA-binding protein (MDBP), which recognizes 5-methylcytosine residues but only in a related family of 14-base-pair sequences.
Dissertations / Theses on the topic "Peas Residues"
1
Farida, Nihla. "Interaction between atrazine residues in the soil and diflufenican application in peas and lucerne /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09ACM/09acmf244.pdf.
Full text
2
Mohamed, Neijat. "Assessing the feeding value of pea straw and evaluating biological methods to improve its utilisation by ruminants." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09AS/09asm697.pdf.
Full textAbstract:
Copies of the author's previously published articles inserted. Bibliography: leaves 142-159. Provides information on the significance of pea straw as a ruminant feed and the potential of two biological techniques for improving its feeding value.
3
Wimpory, Robert Charles. "Aspects of neutron residual stress analysis." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/25162.
Full textAbstract:
This thesis is concerned with the physical principles, methodology and applications of neutron diffraction in the measurement of residual stress. Work on three main areas is presented. 1) Carbon steels 2) Data and Peak Broadening analysis and 3) Single lap glue shear joints. The Carbon steels section shows the drastic effect of the content of carbon on the measured stress. This is an aspect which has been somewhat neglected in the past. The carbon is in the form of cementite, which is a hard compound and causes the carbon steel to act like a composite material, the ferrite acting as a soft matrix and the cementite as a reinforcement. The consequence of this is that the two components develop high microstresses with plastic deformation. This is clearly illustrated in the work of [Bon 97] where values of approx. 460 MPa in the residual stress in the ferrite are balanced by negative residual stresses of 2300 MPa in cementite yielding an overall macro residual stress of zero. In this work it has been shown that even knowledge of the cementite and ferrite residual stresses and fractions may not be sufficient to accurately calculate the macro stress since the ferrite unloading curve is non linear. The use of a single valued constant modulus to convert from strain to stress is hence not valid. Peak shape analysis enables dislocation density and cell size estimates to be made. The thesis examines several methods of data weighting and deconvolution in order to asses the best means of extracting this information from standard residual stress data. Care should be taken for the peaks with very low backgrounds when finding the Gaussian and Lorentzian components. A weighting that avoids the strong bias of zero and I counts in the detector channels should be used e.g. W = I / ( 10 + Y). Lorentzian and Gaussian components can be successfully extracted from asymmetrical peaks (of peaks that broaden symmetrically), using deconvolution method 1, although the data should be of good quality. Reproducibility has been shown in the Gaussian, Lorentzian and FWHM for different instruments at different institutes. This is extremely important for the use of these values for peak broadening analysis and for estimation of the plastic deformation within a sample. The neutron diffraction technique has been used to investigate the longitudinal stresses in the adherend produced as a result of cure and due to the application of a tensile load in a single lap shear joint. The results throw doubt on widely used finite element predictions.
4
Hualla, Palo Rody Nelson, and Alvarez Carlos Cárdenas. "Mejora de procesos en las áreas de mezclado y molienda de una empresa manufacturera de tubosistemas pvc y pead aplicando herramientas de calidad y lean manufacturing." Master's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9372.
Full textAbstract:
La presente tesis está orientada a aplicar herramientas Lean en una empresa
dedicada a la fabricación de tubosistemas que tiene como mercado el sector
construcción, sector económico que ha tenido un gran desarrollo en los últimos años
en nuestro país. Al iniciar el estudio La empresa presentaba problemas en la
utilización del scrap en los compuestos, su uso no estandarizado trajo como
consecuencia altos inventarios de scrap (material rechazado, productos no
conformes).
Se desarrolló un análisis de la situación actual de la empresa y se detectaron los
principales problemas, una vez seleccionados se aplicó las herramientas lean: 5S,
SMED, TPM y Benchmarking, estas herramientas fueron adaptadas a la realidad de la
empresa con el fin de mejorar y optimizar los proceso de mezclado compuestos y
molienda scrap y de reducir el inventario de scrap mediante el incremento de su
consumo y la reducción de su generación.
Como resultado de la implementación de las 5s, disminuyeron los tiempos de tránsito y
tiempos muertos, además la estandarización de actividades y se redujeron los casos
de contaminación compuesto, a la par generó un cambio de cultura en los
colaboradores.
Con el SMED se redujeron los tiempos de abastecimiento a los equipos de molienda,
permitiendo incrementar las horas de trabajo efectivo. La aplicación del TPM también
incremento las horas de trabajo efectivo en el área debido a la reducción de paros de
mantenimiento, el mantenimiento autónomo dio herramientas para ejecutar un
mantenimiento preventivo por parte del propio personal del área.
La implementación del benchmarking con empresas de otros países que forman parte
del mismo a grupo empresarial de la empresa de estudio, se mejoraron fórmulas de
compuesto, se implementó nuevos procedimientos para el uso de equipos
incrementando sus rendimientos y vida útil.
La aplicación de las herramientas Lean permitió la estandarización de actividades,
incremento de rendimientos, reducción de tiempos muertos trayendo como
consecuencia la reducción del inventario de scrap de 323 toneladas en agosto del
2013 a 52 toneladas en julio del 2015, además la disminución de la generación de
scrap de 9% en agosto del 2013 a 5.7% en julio del 2015. Económicamente se justificó el proyecto debido a que se obtuvo un ratio VPN de 379,849 dólares, TIR 40%
y un ratio costo beneficio de 1.77.Tesis
5
Maia, Claudia Maria Branco de Freitas. "Acompanhamento do processo de compostagem da serragem de Pinus taeda pelas características químicas e espectroscópicas das substâncias húmicas em formaçao." reponame:Repositório Institucional da UFPR, 2003. http://hdl.handle.net/1884/48775.
Full textAbstract:
Orientador : Antonio Salvio MangrichCo-orientador : Fábio Simonelli
Tese (doutorado) - Universidade Federal do Paraná
Resumo: A caracterização química de substâncias húmicas (SH) é uma importante etapa na compreensão do processo de humificação. A despeito de seu papel imprescindível na sustentabilidade da vida, a natureza química e a reatividade das SH são ainda pouco conhecidas. SH são misturas originadas da degradação de restos vegetais, do metabolismocatabolismo microbiano, ou de ambos processos. A compostagem é um processo bioxidativo de tratamento de resíduos orgânicos que, sob condições controladas, pode servir para o estudo químico detalhado do processo de humificação e da formação de SH, propiciando a formação de um húmus menos heterogéneo e a partir de materiais de partida bem caracterizados quimicamente. O objetivo deste trabalho foi estudar as alterações químicas ocorridas no material durante a compostagem da mistura de serragem de Pinns taeda e lodo biológico de fábrica de celulose de Pinns. Este material foi usado para estudar o processo de humificação, através da caracterizaçãoespectroscópica e de cromatografia de exclusão por tamanho das fiações húmicas. Os resultados mostraram que o húmus produzido gerou SH de tamanho molecular entre 800 e 12000 Da, ricos em grupos oxigenados (carboxilas e fenóis), em complexos metálicos de ferro, cobre e manganês e em radicais livres orgânicos. A variação do tamanho dos agregados durante a compostagem s e relacionou a aspectos como aeração e relação O/C. O índice de oxidação das estruturas parece reger estas relações. Em húmus "jovens", a fiação fulvica parece ser especialmente afetada por estas relações. O modelo clássico de descrição das SH como macromoléculas poliméricas não explica os resultados obtidos neste trabalho. Estes resultados parecem concordar com a descrição das SH como associações supramoleculares de moléculas relativamente pequenas, unidas por forças fracas em sistema de "self-assembly", ao invés da descrição destas substâncias como macromoléculas. Forças atrativas hidrófobas e ligações de hidrogénio parecem reger os processos de agregação em soluções diluídas, resultando em agregados de tamanhos moleculares maiores, com o aumento da concentração. A repulsão eletrostática predominante quando um limite crítico de concentração é ultrapassado, faz com que os tamanhos dos agregados moleculares se tornem menores. A interação das SH com espécies anfifílicas tais como ácidos orgânicos, parece atuar especialmente desta forma.
Abstract: The chemical characterization of humic substances (HS) is an important step to understand the humification process. Despite their role in the sustainability of life, the basic chemical nature and reactivity of HS are still poorly understood. HS are mixtures developed from plant and animal decays, from microbial metabolism-catabolism, or from both. Composting is a bioxidative process of organic wastes treatment, which could be used, under specified conditions, for H S formation s tudies, s ince i t i s possible t o o btain homogeneous and well chemical well-defined materials. The aim of this work was to study the chemical alterations during the composting of Pinus taeda sawdust and paper mill sludge. The humic fractions obtained from compost were studied by using spectroscopic techniques (EPR, DRIFT, UV-vis and NMR) and sizeexclusion chromatography. The results show that the humus compost formed HS with molecular size between 800 and 12000 Da, rich in oxygenated groups as carboxyl and phenols, in metallic complex as iron, copper and manganese, and in free organic radicals. The molecular size variation of the humic aggregates from compost was correlated with O/C ratio and aeration. In fresh humus, fixlvic fraction seems to be specially affected by this parameters. Such results would have been difficult to explain based on the polymeric description of humic substances. Conversely, our findings can be easily explained on the basis of the supramolecular understanding of humic substances that describes these natural materials as heterogeneous and rather small molecules associated by dispersive forces in supramolecular structures. Hydrophobic forces (%-n, CH-71, van der Waals, charge-transfer bonds) and H-bondings seems to rule the aggregation process in diluted solutions, resulting in greater aggregates with the increase of concentration. Electrostatic repulsion predominates when a critical concentration limit is exceeded and as a result, the molecular size becomes smaller. Humic superaggregates interactions with amphiphilic species as organic acids seems might to have such behavior.
6
Vaz, Jaqueline Elaine. "Avaliação das condições de cultivo para assimilação de xilose e secreção de enzimas e peptídeos pelas leveduras isoladas do ambiente /." São José do Rio Preto, 2020. http://hdl.handle.net/11449/192539.
Full textAbstract:
Orientador: Eleni GomesResumo: As leveduras são organismos quimiorganotróficos que utilizam principalmente glicose como fonte de energia e carbono. Além da glicose, outros açúcares fermentescíveis se encontram em abundância na natureza e têm sido subaproveitados na indústria, dos quais se destaca a xilose. Para algumas leveduras, como Saccharomyces cerevisiae, a utilização de pentoses é limitada pela carência de transportadores de membrana específicos e enzimas intracelulares para a metabolização deste açúcar. Entretanto, algumas leveduras são capazes de utilizar xilose como fonte de carbono e bioconverte-la em produtos como etanol, ácidos orgânicos ou peptídeos. Isso implica na existência de um sistema de transporte e enzimas intracelulares para metabolizala. Neste contexto, a prospecção de enzimas auxiliares despolimerizantes do material lignocelulósico, tais como β-glicosidases e α-L-arabinofuranosidases, também assume função importante para obtenção de açúcares fermentescíveis. Além disso, poucos estudos estão disponíveis a respeito da produção de peptídeos bioativos por leveduras, quais podem ser fontes promissoras de produção dos mesmos. Sendo assim, o presente trabalho buscou investigar o consumo de xilose, a produção de peptídeos com atividade biológica e a produção de βglicosidases pelas espécies Pichia ofunaensis e Trichosporon multisporon, assim como a produção de α-L-arabinofuranosidases por Aureobasidium pullulans e A. leucospermi. As enzimas foram prospectadas utilizando farelo de trigo como ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Yeasts are chemorganotrophic organisms that mainly use glucose as a source of energy and carbon. In addition to glucose, other fermentable sugars are found in abundance in nature and have been underutilized in the industry, of which xylose stands out. For some yeasts, such as Saccharomyces cerevisiae, the use of pentoses is limited by the lack of specific membrane transporters and intracellular enzymes for the metabolization of this sugar. However, some yeasts are able to use xylose as a carbon source and bioconvert it into products such as etanol, organic acids or peptides. This implies the existence of a transport system and intracellular enzymes to metabolize it. The fermentation of pentoses is an essential step to improve the yield in the production of ethanol and organic acids. In this context, the prospection of depolymerizing auxiliary enzymes of lignocellulosic material, such as β-glycosidases and α-Larabinofuranosidases, also plays an important role in obtaining fermentable sugars. In addition, few studies are available regarding the production of bioactive peptides by yeasts, which can be promising sources of their production. Thus, the present work sought to investigate the consumption of xylose, the production of peptides with biological activity and the production of β-glycosidases by the species Pichia ofunaensis and Trichosporon multisporon, as well as the production of α-L-arabinofuranosidases by Aureobasidium pullulans and A. leucospermi. The enzymes were pro... (Complete abstract click electronic access below)
Mestre
7
Pereira, Eveline Raquel. "Viabilidade técnica do reaproveitamento e valorização das borras de pead provenientes do processo de injeção de termoplásticos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/132638.
Full textAbstract:
Se as margens para ganhos financeiros são estreitas e o lucro está atrelado à produtividade, como ocorre nas indústrias de injeção de termoplásticos, cada centavo deve ser considerado. Cada perda no processo deve ser minimizada seja com redução em tempo de ciclo, redução em tempo de máquina parada, estudos de setup, automatização ou reciclagem, não somente de produtos não conformes e canais e de injeção, prática comum nas empresas transformadoras, mas também, das borras plásticas geradas no processo de purga de máquinas injetoras. O presente trabalho propõe a realização de um estudo acerca da viabilidade técnica para a reutilização e reprocessamento da matéria-prima obtida a partir das borras plásticas injetadas, um resíduo industrial, evitando sua deposição no meio ambiente ou venda como sucata, visando um fim mais nobre para esse resíduo tão comum nas empresas de transformação de termoplásticas por injeção. O envelhecimento das amostras por exposição natural e a comparação da performance entre amostras expostas e não expostas possibilitou um estudo comparativo de diversas propriedades e do comportamento do PEAD oriundo de borras plásticas injetadas. A fim de viabilizar a reciclagem, uma metodologia que incluiu procedimentos de coleta, separação, classificação, corte, moagem e formulação de misturas com diferentes frações de moído de borra de PEAD e PEAD virgem é apresentada. Com a realização de ensaios físicos, térmicos, mecânicos, reológicos obteve-se meios para analisar e avaliar as propriedades do polietileno de alta densidade (PEAD) proveniente de borras plásticas injetadas. Ressalta-se que, as condições de exposição ao intemperismo natural ao qual as amostras foram submetidas nesse estudo, são consideradas agressivas, visto que a radiação ultravioleta (UV) chegou ao índice extremo de acordo com a classificação utilizada pela OMS. Por fim, concluiu-se que para aplicações em bens duráveis, que serão expostos ao intemperismo natural, o simples fracionamento entre material reciclado, oriundo de borras plásticas injetadas e PEAD virgem não se mostra eficiente, pois há perda de propriedades mecânicas, principalmente no alongamento na ruptura. A aditivação das formulações é uma opção para obtenção de melhores resultados embora envolva custos adicionais.If the margins are narrow for financial winnings and the profit is related to productivity, as occurs in thermoplastic injection industries, every penny should be considered. Each loss in the process should be minimized such as a reduction in cycle time, reduction in downtime, set up studies, automation or recycling not only of off-specification products and branch injection, common practice in manufacturing companies, but also, plastic sludge generated in the injection machines purge process. This paper proposes the achievement of a study about the technical viability for reuse and reprocessing of raw materials obtained from the injected plastic sludge, a industrial waste, preventing their deposition in the environment or their sale as scrap, seeking a nobler end for that residue so common in thermoplastic processing industries by injection. The aging of samples by natural exposure and the comparison of the performance between exposed and unexposed samples made possible a comparative study of various properties and the collection of information about the properties and behavior of reprocessed HDPE from injected plastic sludges. In order to facilitate recycling, a methodology that included procedures for collecting, separating, sorting, cutting, grinding and formulation of mixtures with different ground fractions of HDPE grounds and virgin HDPE is presented. Com a realização de ensaios físicos, térmicos, mecânicos, reológicos obteve-se meios para analisar e avaliar as propriedades do polietileno de alta densidade (PEAD) proveniente de borras plásticas injetadas. With the realization of physical tests, thermal, mechanical, rheological was obtained ways to analyze and evaluate the high-density polyethylene properties (HDPE) plastic injection-molded from sludges. It is noteworthy that, the conditions of exposure to natural weathering which the samples were submitted in this study are considered aggressive, once the ultraviolet (UV) index was considerated extreme according to the classification used by WHO. Finally, it was concluded that for applications in durable products, which will be exposed to natural weathering, the simple fractionation of recycled material coming from injected plastic sludge and virgin HDPE is inefficient because there is loss of mechanical properties, especially in the stretch at break. The additivation of formulations is an option for better results even though it involves additional costs.
8
SIQUEIRA, FILHO Aníbal Veras de. "Estudo comparativo das tensões residuais em juntas soldadas pelas técnicas de mediaçãopor coordenadas e difração de raios-X." Universidade Federal de Pernambuco, 2012. https://repositorio.ufpe.br/handle/123456789/5028.
Full textAbstract:
Made available in DSpace on 2014-06-12T17:35:33Z (GMT). No. of bitstreams: 2
arquivo9472_1.pdf: 4963678 bytes, checksum: 5b4c27fbb728d346a9a63e7c8bdf258d (MD5)
license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5)
Previous issue date: 2012A soldagem na metalurgia atual vem sendo cada vez mais necessária em função da evolução industrial para atender uma sociedade cada vez mais exigente. O conhecimento do nível de tensões residuais gerados no processo de soldagem é sobretudo um fator de segurança para evitar problemas de acidentes e desgastes, em peças de engenharia. Neste trabalho esta sendo proposto um novo método de avaliação do nível destas tensões residuais. As tensões residuais (TR) de uma junta soldada do aço naval ASTM AH-32 foram medidas a partir da extensão do deslocamento de pontos mapeados numa máquina de medição por coordenadas (MMC) e por difração de raios-X (DR-X), onde os resultados das tensões residuais foram bastante próximos, apresentando comportamento semelhante. Para todos os ensaios, a soldagem foi realizada pelo processo SMAW (manual) utilizando eletrodo revestido AWS E7018 na posição G3 ascendente, por um soldador qualificado e pelo processo SAW (automático), com o objetivo de verificar se há influência do fator humano. Os corpos de prova foram soldados e depois foram marcados pontos (em grafite) sobre os quais se mediu as tensões residuais por difração de raios-X. Depois de medidas as tensões por DR-X foram feitos furos sobre os pontos (3,12 mm de diâmetro x 2,00 mm de profundidade) cujas coordenadas foram mapeadas numa máquina de medir por coordenadas. Depois de medidas as tensões residuais, as juntas soldadas foram submetidas a um tratamento térmico para alívio de tensões (recozimento parcial a 680°C, por 30 minutos). Depois de aliviadas as tensões, mediram-se na máquina de medição por coordenadas os deslocamentos sofridos pelos furos previamente mapeados. Baseado nos deslocamentos sofridos, as tensões residuais foram calculadas e comparadas às medidas da DR-X para validação desta nova metodologia de medição. Os resultados obtidos pela técnica de medição por coordenadas (MMC) mostraram uma boa correlação com DR-X, principalmente no sentido longitudinal. Os aspectos morfológicos da junta soldada do aço ASTM AH32 foram analisados antes e após tratamento térmico para alívio de tensões. A evolução microestrutural produzida pela plastificação e pelo alívio de tensões subseqüente foi observada e analisada por microscopia eletrônica de varredura (MEV). Para caracterização microestrutural foram preparados corpos de prova por metalografia tradicional nas condições de soldados e tratados e as análises microestruturais foram realizadas por microscopia eletrônica de varredura. Baseados nas análises morfológicas, os resultados mostraram a eficácia do tratamento para alívio das tensões residuais e, a partir das quais, os efeitos da plastificação / restauração parcial da microestrutura foram evidenciados
9
Loures, Ana Paula Santana. "Modelos de remoção de parâmetros qualitativos em sistema para tratamento de esgoto doméstico por escoamento superficial utilizando o capim-coastcross (Cynodon dactylon (L.) Pers.)." Universidade Federal de Viçosa, 2002. http://www.locus.ufv.br/handle/123456789/9464.
Full textAbstract:
Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2017-02-09T12:56:46Z
No. of bitstreams: 1
texto completo.pdf: 1341620 bytes, checksum: 5eec1bf94acfa3b6d2ce2db9881fd4f3 (MD5)Made available in DSpace on 2017-02-09T12:56:46Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1341620 bytes, checksum: 5eec1bf94acfa3b6d2ce2db9881fd4f3 (MD5) Previous issue date: 2002-08-14
O sistema de tratamento por escoamento superficial tem recebido especial atenção como forma de dispor resíduos líquidos com produção de biomassa vegetal. Com o objetivo de melhor compreender e quantificar a remoção e a concentração de matéria orgânica (MO), fósforo (P), nitrogênio (N), sódio (Na), potássio (K), cálcio (Ca) e magnésio (Mg) em faixas de tratamento por escoamento superficial, foram conduzidos ensaios de campo para avaliar o desempenho desses sistemas de tratamento, sob taxas de aplicação de 0,24; 0,36 e 0,48 m 3 ·h -1 ·m -1 , em rampas de tratamento com 2% de declividade, instaladas nas dependências da Área Experimental do Departamento de Engenharia Agrícola (DEA) da Universidade Federal de Viçosa (UFV). Verificou-se que, para 8 m de comprimento de faixa, a menor taxa de aplicação (0,24 m 3 ·h -1 ·m -1 ) proporcionou a maior taxa de remoção dos nutrientes, tendo alcançado eficiências de 66,42% para demanda bioquímica de oxigênio aos 5 dias (DBO 5 ); 62,46% para demanda química de oxigênio (DQO); 47,46% para fósforo total (Pt); 47,45% para fósforo total dissolvido (Ptd); 42,60% para fósforo inorgânico dissolvido (Pid); 85,12% para fósforo orgânico dissolvido (Pod); 53,39% para nitrogênio total (N tot ); 55,55% para nitrogênio amoniacal (N am ); 68,98% para nitrogênio orgânico (N org ); 55,41% para amônio (N-NH 4+ ); 27,11% para Na e 12,34% para K. Entretanto, para fósforo total no resíduo (Ptr), a taxa de aplicação 0,36 m 3 ·h -1 ·m -1 resultou na maior eficiência de remoção de P, tendo alcançado o valor de 55,65%. Para nitrogênio nítrico (N nit ), a taxa de aplicação 0,48 m 3 ·h -1 ·m -1 resultou na maior eficiência de remoção de N, tendo alcançado o valor de 34,10%. Os coeficientes para o estágio 1 do modelo exponencial foram k = 0,00195 e n = 2,31541, para DBO; k = 0,02001 e n = 0,78463, para DQO; k = 0,00194 e n = 2,31368, para Pt; k = 0,01470 e n = 0,93652, para Ptr; k = 0,00163 e n = 2,34421, para Ptd; k = 0,00230 e n = 2,08953, para Pid; k = 0,00952 e n = 1,95454, para Pod; k = 0,01255 e n = 1,20646, para N tot ; k = 0,00591 e n = 1,73648, para N am ; k = 0,07736 e n = -0,34409, para N nit ; k = 0,00885 e n = 1,74748, para N org ; k = 0,00558 e n = 1,85048, para N-NH 4+ ; k = 0,01004 e n = 0,19381, para Na; e k = 0,00705 e n = 1,06897, para K. Após a análise de amostras de solos coletadas a 1 m do início da faixa, antes e depois da aplicação do esgoto, na camada C 1 (de 0 a 10 cm), para todas as taxas de aplicação estudadas, verificou-se diminuição no conteúdo de MO. Na camada C 2 (de 50 a 60 cm), para as taxas de aplicação 0,24 e 0,48 m 3 ·h -1 ·m -1 , houve aumento na referida variável enquanto que, para a taxa de aplicação 0,36 m 3 ·h -1 ·m -1 , houve diminuição. Para as taxas de aplicação 0,24 e 0,48 m 3 ·h -1 ·m -1 , nas camadas C 1 e C 2 , verificou-se diminuição no conteúdo de P. Para a taxa 0,36 m 3 ·h -1 ·m -1 , entretanto, em ambas as camadas, verificou-se aumento na referida variável. Observou-se uma tendência de os conteúdos de Na, K e Ca aumentarem, nas mesmas camadas, sob a taxa de aplicação 0,36 m 3 ·h -1 ·m -1 . Para o magnésio (Mg), estes aumentos foram verificados na camada C 1 , para a taxa 0,24 m 3 ·h -1 ·m -1 , e, na camada C 2 , para a taxa 0,48 m 3 ·h -1 ·m -1 . A taxa 0,36 m 3 ·h -1 ·m -1 proporcionou, no período de 137 dias de aplicação de esgoto, os maiores valores de rendimento acumulado na produção de biomassa e remoções de P, N, Na, K, Ca e Mg pelo capim-coastcross.
Domestic wastewater must be viewed not only as a waste to be disposed but also as resource of organic matter and macro and micronutrients. The overland flow treatment has received special attention since it utilizes this resource for plant biomass production. In order to evaluate the overland flow treatment efficiency at different application rates: 0.24, 0.36 and 0.48 m 3 ·h -1 ·m -1 of domestic wastewater, in flow slopes with a down-slope grade of 2%, an experiment was developed in the Experimental Area of the Agricultural Engineering Department at the Federal University of Viçosa. For the biomass production the coastcross bermudagrass Cynodon dactylon L. was used. The highest removal rates for samples collected at 8 m from the beginning of the borders occurred for the application rate of 0.24 m 3 ·h -1 ·m -1 : 66,42% for 5-day biochemical oxygen demand (BOD 5 ); 62,46% for chemical oxygen demand (COD); 47,46% for total phosphorus (TP); 47,45% for total dissolved phosphorus (TDP); 42,60% for inorganic dissolved phosphorus (IDP); 85,12% for organic dissolved phosphorus (ODP); 53,39% for total nitrogen (N tot ); 55,55% for ammoniacal nitrogen (N am ); 68,98% for organic nitrogen (N org ); 55,41% for ammonium nitrogen (NH 4+ -N); 27,11% for sodium (Na); and 12,34% for potassium (K). However, for total suspended phosphorus (TSP), the highest removal rate occurred for the application rate of 0.36 m 3 ·h -1 ·m -1 : 55,65%. For nitric nitrogen (N nit ), the highest removal rate occurred for the application rate of 0.48 m 3 ·h -1 ·m -1 : 34,10%. The coefficients for the stage 1 of the exponential model were k = 0,00195 and n = 2,31541, for BOD; k = 0,02001 and n = 0,78463, for COD; k = 0,00194 and n = 2,31368, for TP; k = 0,01470 and n = 0,93652, for TSP; k = 0,00163 and n = 2,34421, for TDP; k = 0,00230 and n = 2,08953, for IDP; k = 0,00952 and n = 1,95454, for ODP; k = 0,01255 and n = 1,20646, for N tot ; k = 0,00591 and n = 1,73648, for N am ; k = 0,07736 and n = -0,34409, for N nit ; k = 0,00885 and n = 1,74748, for N org ; k = 0,00558 and n = 1,85048, for NH 4+ -N; k = 0,01004 and n = 0,19381, for Na; and k = 0,00705 and n = 1,06897, for K. Soils samples were collected at two layers at 1 m from upper end: L 1 (0 to 10 cm) and L 2 (50 to 60 cm). For all treatments the amount of organic matter at L 1 decreased at the end of the experiment. At L 2 the amount of organic matter increased for the treatments with application rates of 0.24 and 0.48 m 3 ·h -1 ·m -1 , and decreased for the 0.36 m 3 ·h -1 ·m -1 . It was detected a decrease in P for both layers for the treatments with 0.24 and 0.48 m 3 ·h -1 ·m -1 of application rate. In an opposite way, the amount of P for the treatment with 0.36 m 3 ·h -1 ·m -1 increased. At L 1 and L 2 , the highest increase in Na, K and Ca were detected at the treatment with 0.36 m 3 ·h -1 ·m -1 of application rate, while the highest increase in Mg was detected at the treatment with 0.24 m 3 ·h -1 ·m -1 , for L 1 , and at the treatment with 0.48 m 3 ·h -1 ·m -1 for L 2 . The treatment with 0.36 m 3 ·h - ·m -1 of application rate, in 137 days, presented the highest values of biomass production and P, N, Na, K, Ca and Mg removals by the 'coastcross' bermudagrass.
Dissertação importada do Alexandria
10
Siqueira, Filho Aníbal Veras de. "Estudo comparativo das tensões residuais em juntas soldadas pelas técnicas de medição por coordenadas e difração de raios-x." Universidade Federal de Pernambuco, 2012. https://repositorio.ufpe.br/handle/123456789/11448.
Full textAbstract:
Submitted by João Arthur Martins (joao.arthur@ufpe.br) on 2015-03-09T13:58:03Z
No. of bitstreams: 2
Tese_Aníball.pdf: 5565793 bytes, checksum: b0638f3305edf992efc9cbc55dabdad7 (MD5)
license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)Made available in DSpace on 2015-03-09T13:58:03Z (GMT). No. of bitstreams: 2 Tese_Aníball.pdf: 5565793 bytes, checksum: b0638f3305edf992efc9cbc55dabdad7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2012
FACEPE
A soldagem na metalurgia atual vem sendo cada vez mais necessária em função da evolução industrial para atender uma sociedade cada vez mais exigente. O conhecimento do nível de tensões residuais gerados no processo de soldagem é sobretudo um fator de segurança para evitar problemas de acidentes e desgastes, em peças de engenharia. Neste trabalho esta sendo proposto um novo método de avaliação do nível destas tensões residuais. As tensões residuais (TR) de uma junta soldada do aço naval ASTM AH-32 foram medidas a partir da extensão do deslocamento de pontos mapeados numa máquina de medição por coordenadas (MMC) e por difração de raios-X (DR-X), onde os resultados das tensões residuais foram bastante próximos, apresentando comportamento semelhante. Para todos os ensaios, a soldagem foi realizada pelo processo SMAW (manual) utilizando eletrodo revestido AWS E7018 na posição G3 ascendente, por um soldador qualificado e pelo processo SAW (automático), com o objetivo de verificar se há influência do fator humano. Os corpos de prova foram soldados e depois foram marcados pontos (em grafite) sobre os quais se mediu as tensões residuais por difração de raios-X. Depois de medidas as tensões por DR-X foram feitos furos sobre os pontos (3,12 mm de diâmetro x 2,00 mm de profundidade) cujas coordenadas foram mapeadas numa máquina de medir por coordenadas. Depois de medidas as tensões residuais, as juntas soldadas foram submetidas a um tratamento térmico para alívio de tensões (recozimento parcial a 680°C, por 30 minutos). Depois de aliviadas as tensões, mediram-se na máquina de medição por coordenadas os deslocamentos sofridos pelos furos previamente mapeados. Baseado nos deslocamentos sofridos, as tensões residuais foram calculadas e comparadas às medidas da DR-X para validação desta nova metodologia de medição. Os resultados obtidos pela técnica de medição por coordenadas (MMC) mostraram uma boa correlação com DR-X, principalmente no sentido longitudinal. Os aspectos morfológicos da junta soldada do aço ASTM AH32 foram analisados antes e após tratamento térmico para alívio de tensões. A evolução microestrutural produzida pela plastificação e pelo alívio de tensões subseqüente foi observada e analisada por microscopia eletrônica de varredura (MEV). Para caracterização microestrutural foram preparados corpos de prova por metalografia tradicional nas condições de soldados e tratados e as análises microestruturais foram realizadas por microscopia eletrônica de varredura. Baseados nas análises morfológicas, os resultados mostraram a eficácia do tratamento para alívio das tensões residuais e, a partir das quais, os efeitos da plastificação / restauração parcial da microestrutura foram evidenciados.
Books on the topic "Peas Residues"
1
James, Robert L. Fungal colonization of residual conifer seedling roots in soil: USDA Forest Service Lucky Peak Nursery, Boise, Idaho. Missoula, MT: U.S. Dept. of Agriculture, Forest Service, Northern Region, 1999.
Find full text
2
Bolaños Bricero, Jorge Arturo, Leidy Johana Ariza Marín, Lady Johanna Daza N, and Vicente Sebastián Pineda. Investigación de mercados, enfocada al aprovechamiento de residuos plásticos (PP, PEAD, PEBD) para el sector de la construcción. Universidad Santo Tomas, 2020. http://dx.doi.org/10.15332/dt.inv.2020.02809.
Full text
3
Ashenhurst, James R., and Kim Fromme. Alcohol Use and Consequences Across Developmental Transitions During College and Beyond. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190676001.003.0015.
Full textAbstract:
Alcohol use generally peaks during emerging adulthood, which resides between adolescence and adulthood. For many, this period is also marked by participation in higher education, and college campuses are well-known environments of high-risk drinking. This chapter highlights trajectory groups of heavy episodic drinking and reviews well-studied risk factors for and consequences of alcohol use. Risk factors highlighted include demographics, peer norms, parental awareness and caring, academic motives, personality, and subjective response to alcohol. Those at greatest risk are men, those with greater family wealth, sexual minorities, and Caucasian students. Greater sensation seeking or impulsive personality, low parental awareness, greater stimulation response, and higher peer drinking norms are significant correlates of risky drinking. The consequences of alcohol use examined are aggression, drinking and driving, and alcohol-induced blackouts. The chapter describes findings about special events during which extreme drinking is relatively common: 21st birthdays and football games or other sporting events.
4
Dixon, Marc. Heartland Blues. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190917036.001.0001.
Full textAbstract:
Heartland Blues provides a new perspective on union decline by revisiting the labor movement at its historical peak in the 1950s and analyzing campaigns over right-to-work laws and public-sector collective bargaining rights in the industrial Midwest. The focus on 1950s labor conflicts, including union failures, departs from popular and academic treatments of the period that emphasize consensus, an accord between capital and labor in collective bargaining, or the conservative drift and bureaucratization of the labor movement. The state campaigns examined in Heartland Blues instead reveal a labor movement often beset by dysfunctional divisions, ambivalent political allies, and substantial employer opposition. Drawing on social movement theories, the book shows how many of the key ingredients necessary for activist groups to succeed, including effective organization and influential political allies, were not a given for labor at its historical peak but instead varied in important ways across the industrial heartland. These limits slowed unions in the 1950s. Not only did labor fail to crack the Sunbelt, it never really conquered the industrial Midwest, where most union members resided in the mid-twentieth century. This diminished union influence within the Democratic Party and in society. The 1950s are far more than an interesting side story. Indeed, the labor movement never solved many of these basic problems. The labor movement’s social and political isolation and its limited responses to employer mobilization became a death knell in the coming decades as unions sought organizational and legislative remedies to industrial decline and the rising anti-union tide.
5
Farias, Vivian. Que corpo é esse? As inquietantes faces das body modifications. Editorial Casa, 2022. http://dx.doi.org/10.55371/978-65-89999-90-4.
Full textAbstract:
Neste livro, Vivian Madeira Faria articula dois temas importantes: o corpo e a sua modificação por meio da Body Modification. Abordar o corpo remonta aos primórdios da psicanálise. Foi por meio da subversão do corpo no seu sentido biológico que a psicanálise se constituiu, quando Freud notou que o corpo apresenta manifestações para além do anatomofisiológico. Ou seja: o corpo constitui e é constituído também pelo psíquico. Para desenvolver o tema a que se propôs, a autora pormenorizou com maestria e riqueza teórica o estatuto do corpo para a psicanálise, acompanhando o percurso freudiano desde a noção do corpo autoerótico e fragmentado, passando pelo corpo unificado pelo narcisismo, pelas montagens da pulsão como representante psíquico dos estímulos corporais e, por fim, pela noção do Eu como sendo, sobretudo, um Eu corporal. Pensar e discutir as modificações corporais é de extrema importância. E aqui reside a grande contribuição de Vivian: contextualizar a Body Modification com cautela para não cair na patologização dessa prática. Ela provoca a reflexão, sustentada pela teoria freudiana, de que tais modificações podem ser um caminho de tentativa de simbolização dos conflitos psíquicos, bem como representar um processo de libidinização do corpo, envolvendo uma passagem ao narcisismo, o que pode despertar o sentimento de apropriação do corpo, e nos convida a explorar as inquietações que as modificações produzem tanto na pessoa modificada como em seu entorno
6
e Silva, Katia Alexandra de Godoi. Curadoria Digital em Software de Análise Qualitativa: uma proposta de formação baseada no desenvolvimento de competências. Ludomedia, 2022. http://dx.doi.org/10.36367/ntqr.10.2022.e520.
Full textAbstract:
Nos últimos anos tem ocorrido um crescente interesse, por parte dos pesquisadores, pelas abordagens de investigação qualitativa no contexto digital, influenciando o design e demandando competências digitais. Nesse contexto, o presente estudo poderá trazer contribuições relacionadas ao gerenciamento de um plano de curadoria, que poderá abarcar a organização das buscas, seleção, contextualização, compartilhamento e avaliação, além de facilitar a comunicação entre os participantes da pesquisa. Desta forma, o objetivo deste capítulo reside em apresentar uma proposta de formação para pesquisadores qualitativos em curadoria digital com a exploração de Computer Assisted Qualitative Data Analysis Software CAQDAS, a partir do desenvolvimento de competências. Para alcançar tal objetivo, o capítulo está organizado em três seções, sendo a primeira a introdução; a segunda, a articulação entre curadoria digital e CAQDAS, no intuito de discorrer sobre algumas das principais concepções sobre curadoria digital, de modo a elucidar e aproximar o tema na organização e gestão de dados em CAQDAS; a terceira, a proposta de formação de curadoria digital em CAQDAS, a qual optou-se por trabalhar, a partir do modelo de aprendizagem híbrido denominado Self-Blend, utilizando o Modelo de Curadoria de Conteúdo Digital na Educação e o Framework DigCompEdu, mais especificamente a Área 2 – Recursos digitais. Por fim, as considerações finais, revelam possibilidades de diálogo entre o processo curadoria digital e os CAQDAS, emergindo uma nova proposta de formação. Uma formação voltada às demandas e atribuições do pesquisador, que precisa ser preparado para assumir tal responsabilidade. Além de limitações, as quais estão relacionadas à própria formação, a qual encontra-se em fase de desenvolvimento.
7
Claudino, Sérgio, Xosé M. Souto, Mª Angeles Rodriguez Domenech, João Bazzoli, Raimundo Lenilde, Claudionei Lucimar Gengnagel, Luís Mendes, and Adilson Tadeu Basquerote Silva. Geografia, Educação e Cidadania. Centro de Estudos Geográficos, 2019. http://dx.doi.org/10.33787/ceg20190004.
Full textAbstract:
De 7 a 12 de setembro de 2018, realizou-se no Instituto de Geografia e Ordenamento do Território da Universidade de Lisboa/IGOT-ULisboa o I Congresso Nós Propomos: Geografia, Educação e Cidadania. Como o título do Congresso rapidamente evidencia, o Congresso decorreu e refletiu a investigação desenvolvida no Projeto Nós Propomos! Cidadania e Inovação na Educação Geográfica, surgido no IGOT-ULisboa, em 2011, e entretanto difundido por outros países. Na realidade, o Projeto Nós Propomos!, para além da sua difusão em Portugal, está hoje presente no Brasil (desde 2014, adquirindo hoje uma assinalável expansão), Espanha (2016), Moçambique (2017), Colômbia (2018), Perú (2018) e México (2018). O Congresso impôs-se, de alguma forma, pela necessidade de partilhar experiências, muito ricas e diversas, desenvolvidas nestes países, e de consolidar a rede daqueles que constroem o Projeto nas suas universidades, escolas e cidades. Nesse sentido, o Congresso surgiu para acolher e potenciar a produção científica em torno do Projeto e uma rede de trabalho construída ao ritmo de sucessivas e localizadas adesões ao Projeto. O Projeto Nós Propomos! é o projeto educativo com origem em Portugal e que mais rapidamente se internacionalizou. No Rio de Janeiro, no Colégio Pedro II, em 2020, teremos o II Congresso. Contudo, o Congresso, ele abriu-se à produção em Geografia e em Educação, ultrapassando o âmbito do Projeto Nós Propomos! Mas há um denominador comum que o leitor encontra neste livro, inspirada no Projeto: a preocupação pela cidadania e, em particular, pela cidadania territorial, entendida como o compromisso de cada um de nós na construção de territórios mais justos e sustentáveis, desse logo à escala local. A produção em Geografia, seja de Geografia Física ou de Geografia Humana, para assumirmos os dois grandes ramos tradicionais, ou a produção em Educação, têm sempre como preocupação comum a promoção de atitudes de cidadania, entre os alunos ou a população, mais em geral. O Projeto Nós Propomos!, ponto de partida do Congresso, desafia os alunos a identificarem problemas da comunidade que sejam relevantes para alunos ou formandos, a realizarem pesquisa documental e trabalho de campo sobre o problema identificado (seja a construção de abrigo para uma paragem de autocarro, a reabilitação de um prédio em ruinas no centro da cidade e que pode ter utilizações sociais variadas, a construção de um museu virtual das produções locais ou uma aplicação para o telemóvel, que informe dos eventos locais), a apresentarem propostas de solução e, finalmente, a partilharem as suas propostas com a comunidade, na perspetiva da sua implementação e discussão. Como refere, no Prefácio, o Sr. Secretário de Estado da Educação, os conteúdos da Geografia são mobilizados para uma intervenção cívica consciente. No Projeto, adota-se uma metodologia simples, passível de ser implementada na generalidade das escolas, e flexível, no respeito pelas circunstâncias concretas de cada escola, de cada comunidade, de cada país. Numa disciplina herdeira tanto de um paradigma universalista, através dos racionalistas do final do século XVIII, como de um paradigma nacionalista, no século XIX, a escala local surge desvalorizada na educação geográfica. A grande rutura do Projeto Nós Propomos! reside, precisamente, em colocar a escala local no centro da disciplina de Geografia e de se assumir, de forma inequívoca, o compromisso da escola na construção de uma comunidade mais harmónica e sustentável. Não é mais aceitável que se aborde (e ainda bem) o mundo, o país e se desvalorize a comunidade que habitamos e que constitui o nosso primeiro espaço de cidadania, ainda que em necessário diálogo com as restantes escalas. Como refere o Sr. Secretário de Estado da Educação no seu Prefácio a este livro, “Nós somos cidadãos do mundo, mas somos os nossos territórios, somos os nossos lugares, somos as relações que se estabelecem localmente”. O carater construtivista do Projeto (através da valorização dos interesses dos alunos), o caráter local do território de estudo e de intervenção, a realização do trabalho de campo, com apelo à auscultação das populações sobre as soluções para os problemas identificados, e a partilha das propostas são as traves-mestras da identidade do Projeto, a que se acrescenta a incorporação da própria designação do Projeto (Nós Propomos!), frequentemente adaptada às línguas dos vários países participantes. O Projeto Nós Propomos! coloca os alunos no centro do processo educativo e este I Congresso Iberoamericano refletiu esta mesma realidade: contou com a participação de cerca de 70 alunos, de Portugal, Espanha (em maior número) e Brasil, num esforço frequentemente hercúleo dos seus docentes, que em muitas comunicações deram testemunho direto das suas experiências. Esta presença e participação de alunos, enquadrados pelos seus pais, constituiu, sem dúvida, uma marca distintiva deste Congresso. Em várias comunicações eles são co-autores, destes que são os seus primeiros textos publicados – e a eles dirigimos uma saudação especial. O livro integra três domínios. O primeiro sobre, o Projeto Nós Propomos!, compreende dois eixos, o primeiro sobre “Experiências Escolares”, com 17 textos; o segundo Eixo, sobre “Perspetivas e Reflexões Teóricas e Metodológicas”, possui 33 capítulos. O domínio seguinte, sobre “Experiências educativas alternativas”, compreende textos não diretamente relacionados com o Projeto Nós Propomos!, mas que vão igualmente ao encontro da procura de propostas inovadoras do ponto de vista pedagógico-didático, compreendendo 17 textos. O Domínio C, sore “Educação e Multidisciplinaridade”, igualmente com 17 capítulos, compreende experiências relacionadas ou não com o Projeto Nós Propomos!, em que a contribuição de várias áreas disciplinares é marcante. A publicação em ebook responde a dois objetivos: a escassez de recursos financeiros para uma publicação em papel de 1000 páginas páginas e, naturalmente, ao esforço de ter a maior divulgação possível na comunidade científica. Para a produção deste livro, muito contribuíram a Comissão Científica do Congresso, presidida pelo Professor Souto González, presidente do Conselho Diretivo do GEOFORUM e professor da Universidade de Valência, e a Comissão Editorial, presidida pelo professor da Universidade de Passo Fundo, Claudionei Lucimar Gengnagel, que desenvolveu um trabalho aturado. Um agradecimento também ao ZOE/Centro de Estudos Geográficos e ao IGOT-ULisboa, editores desta publicação. O penúltimo agradecimento vai para todos os autores que contribuíram para esta obra. O derradeiro agradecimento vai para o leitor, que dá significado à mesma. Estão aqui identificadas e analisadas muitas e diversas práticas de cidadania – ao leitor fica agora a disponibilidade de uma leitura atenta, sempre crítica e, seguramente, proveitosa.
Book chapters on the topic "Peas Residues"
1
Noyan, Ismail C., and Jerome B. Cohen. "The Shape of Diffraction Peaks — X-ray Line Broadening." In Residual Stress, 230–47. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4613-9570-6_8.
Full text
2
Windsor, Colin G. "The Precision of Peak Position Determination in Diffraction Measurements of Stress." In Measurement of Residual and Applied Stress Using Neutron Diffraction, 285–96. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2797-4_19.
Full text
3
Belassel, M., Eliane Bocher, and J. Pineault. "Effect of Detector Width and Peak Location Technique on Residual Stress Determination in Case of Work-Hardened Materials." In Materials Science Forum, 755–60. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-414-6.755.
Full text
4
Singh, V. K., B. S. Dwivedi, S. S. Rathore, R. P. Mishra, T. Satyanarayana, and K. Majumdar. "Timing Potassium Applications to Synchronize with Plant Demand." In Improving Potassium Recommendations for Agricultural Crops, 363–84. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_13.
Full textAbstract:
AbstractPotassium (K) demand by crops is almost as high as that of nitrogen (N) and plays a crucial role in many plant metabolic processes. Insufficient K application results in soil K mining, deficiency symptoms in crops, and decreased crop yields and quality. Crop K demands vary with crop types, growth patterns, nutrient needs at different physiological stages, and productivity. Science-based K application in crops needs to follow 4R Nutrient Stewardship to ensure high yield, improved farm income, and optimum nutrient use efficiency. Studies around the world report widespread K deficiency, ranging from tropical to temperate environments. Long-term experiments indicate significant yield responses to K application and negative K balances where K application is either omitted or applied suboptimally. Limited understanding of K supplementation dynamics from soil non-exchangeable K pools to the exchangeable and solution phases and over-reliance on native K supply to meet crop demand are major reasons for deficit of K supply to crops. Research on optimum timing of K fertilizer application in diverse climate–soil–crop systems is scarce. The common one-time basal K management practice is often not suitable to supply adequate K to the crops during peak demand phases. Besides, changes in crop establishment practices, residue retention, or fertigation require new research in terms of rate, time, or source of K application. The current review assesses the synchrony of K supply from indigenous soil system and from external sources vis-à-vis plant demand under different crops and cropping systems for achieving high yield and nutrient use efficiency.
5
"Limits on Pesticide Residues in Snow Peas." In Environmental Requirements and Market Access, 107–16. OECD, 2006. http://dx.doi.org/10.1787/9789264013742-10-en.
Full text
6
Emsbo-Mattingly, Stephen D., and Scott A. Stout. "Semivolatile Hydrocarbon Residues of Coal and Coal Tar." In Coal and Peat Fires: A Global Perspective, 173–208. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-444-52858-2.00011-6.
Full text
7
Dixon, N., and D. R. V. Jones. "Design interface shear strengths: peak or residual?" In Geosynthetics: Protecting the Environment, 51–70. Thomas Telford Publishing, 2003. http://dx.doi.org/10.1680/gpte.32347.0003.
Full text
8
Gruda, Nazim S., and Neil Bragg. "Developments in alternative organic materials for growing media in soilless culture systems." In Burleigh Dodds Series in Agricultural Science, 73–106. Burleigh Dodds Science Publishing, 2021. http://dx.doi.org/10.19103/as.2020.0076.03.
Full textAbstract:
There is increasing pressure on both growing media manufacturers and horticulturists to significantly reduce their reliance on peat as a constituent of substrates. This chapter distils down the available information on alternative organic materials which have emerged as the major contenders for peat dilution or replacement. We discuss materials coming from residues of manufacturing processes, for instance, wood, tree bark and coconut fibres and coir; waste and composted materials, for instance, green compost; and materials specially cultivated for use as growing media components, for instance, Sphagnum and Miscanthus. The future of growing media will be based on blends of different components which will be renewable and locally produced materials with better life cycle assessment.
9
Hauk, Viktor. "Peak width and its relation to different parameters." In Structural and Residual Stress Analysis by Nondestructive Methods, 216–29. Elsevier, 1997. http://dx.doi.org/10.1016/b978-044482476-9/50008-6.
Full text
10
Lee, Christine U., and James F. Glockner. "Case 15.12." In Mayo Clinic Body MRI Case Review, edited by Christine U. Lee and James F. Glockner, 748–49. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199915705.003.0395.
Full textAbstract:
43-year-old woman status post wide local excision of infiltrating ductal carcinoma in the left breast 7 weeks before this MRI, which was performed to rule out residual disease The MIP images of the left breast at peak enhancement with (Figure 15.12.1A) and without (...
Conference papers on the topic "Peas Residues"
1
"Validation of XRD Stress Analyses Combining in-situ Tests and Integrated Peak Processing." In Residual Stresses 10. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291173-16.
Full text
2
Zogbochi, V., P. K. Chetangny, S. Houndedako, A. Vianou, D. Chamagne, and G. Barbier. "Electric Energy Production from Cotton Residues Using Stirling Engine." In 2019 IEEE PES/IAS PowerAfrica. IEEE, 2019. http://dx.doi.org/10.1109/powerafrica.2019.8928862.
Full text
3
Gomez, Manuel, and Francisco Jurado. "Feasibility of fuel cell systems using forest residues." In 2007 IEEE Power Engineering Society General Meeting. IEEE, 2007. http://dx.doi.org/10.1109/pes.2007.385671.
Full text
4
Deb, Suman, and S. Dandapat. "Emotion classification using residual sinusoidal peak amplitude." In 2016 International Conference on Signal Processing and Communications (SPCOM). IEEE, 2016. http://dx.doi.org/10.1109/spcom.2016.7746697.
Full text
5
Kim, Beom Kyu, Byung Gi Park, Hwa Jeong Han, Ji Hye Park, and Won Ki Kim. "An Effect of Bismuth Ion on the Reduction of Terbium Ion in Molten LiCl-KCl Eutectic Salt." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82468.
Full textAbstract:
A salt waste generated from the pyroprocess contains residual actinides and needs to be purified for recycling of the salt and waste conditioning. A co-reduction process could be considered for removal of residual actinides from the salt waste, which contains lanthanides and residual actinides. In the study, specifically, an effect of Bi(III) ion on the electrochemical reaction of Tb(III) ion was investigated in the molten LiCl-KCl eutectic with BiCl3 and TbCl3 at 773 K using electrochemical techniques of cyclic voltammetry, square wave voltammetry and open circuit chronopotentiometry. Tb(III) has a single redox couple without Bi(III). However, the cyclic voltammograms obtained at tungsten electrode in LiCl-KCl-BiCl3-TbCl3 showed four redox couples. The square wave voltammogram in same condition also showed five reduction peaks. Cyclic voltammogram and square wave voltammogram was resolved to find the accurate peaks for redox reaction. Each peak indicates the formation of Tb-Bi intermetallic compound except Tb(III) reduction peak. From the phase diagram of Tb-Bi, it is inferred that each peak corresponds to TbBi2, TbBi, Tb4Bi3, and Tb5Bi3. The open circuit chronopotentiometry was conducted to estimate Gibbs free energy of formation of Tb-Bi intermetallic compound. The experimental results obtained from three kind of the electrochemical techniques showed that Tb-Bi intermetallic compounds were electrochemically formed under potential of Tb(III) reduction potential by co-reduction of Bi(III) and Tb(III). These results indicate that underpotential deposition by co-reduction could be used for Tb(III) removal from the salt waste with Bi(III).
6
He, Mingjing, Yaodong Chen, and Wei Chen. "Study on Residual Current Protector for Electric Vehicle Charging Pile." In 2021 IEEE 1st International Power Electronics and Application Symposium (PEAS). IEEE, 2021. http://dx.doi.org/10.1109/peas53589.2021.9628599.
Full text
7
Ma, Jian, Yousu Chen, Zhenyu Huang, and Pak Chung Wong. "Using state estimation residuals to detect abnormal SCADA data." In IEEE PES T&D 2010. IEEE, 2010. http://dx.doi.org/10.1109/tdc.2010.5484686.
Full text
8
Parmar, Milan, Di Wang, Ah-Hwee Tan, Chunyan Miao, Jianhua Jiang, and You Zhou. "A novel density peak clustering algorithm based on squared residual error." In 2017 International Conference on Security, Pattern Analysis, and Cybernetics (SPAC). IEEE, 2017. http://dx.doi.org/10.1109/spac.2017.8304248.
Full text
9
Yang, Liu, Junyu Zhang, Tingxuan Chen, Wuji Lei, and Xiaolong Liu. "Predicting Residual Stress by Finding Peak Shape Using Artificial Neural Networks." In 2020 IEEE Intl Conf on Parallel & Distributed Processing with Applications, Big Data & Cloud Computing, Sustainable Computing & Communications, Social Computing & Networking (ISPA/BDCloud/SocialCom/SustainCom). IEEE, 2020. http://dx.doi.org/10.1109/ispa-bdcloud-socialcom-sustaincom51426.2020.00105.
Full text
10
Bao, Sheng, Shuzhuang Bai, Ashri Mustapha, Huangjie Lou, and Meili Fu. "Property Evaluation of Q345 Welded Steel by Tangential Residual Magnetic Field." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62169.
Full textAbstract:
This research aims to investigate the relationship between the metal magnetic memory (MMM) signals of Q345 welded steel and its mechanical characteristics including the range of stress concentration zone and the tensile stress. A series of tensile experiments were carried out to measure the tangential residual magnetic field (RMF) on the surface of Q345 steel welded specimens under the action of stress. The variation of tangential RMF and the characteristic parameters (the peak-peak width and the peak-peak amplitude) of tangential RMF gradient curve were investigated. It was found that the tangential magnetic field curve of welded specimen has abnormal magnetic changes in the weld joint area. An analysis of the tangential RMF gradient curve shows that the range of stress concentration zone of welded specimen can be evaluated by the peak-peak width which is nearly constant under different tensile stress. Furthermore, the peak-peak amplitude of the tangential RMF gradient curve has quartic polynomial relationship with tensile stress and it is a potentially useful indictor of the tensile stress in welded steel.
Reports on the topic "Peas Residues"
1
Gurevitz, Michael, Michael Adams, and Eliahu Zlotkin. Insect Specific Alpha Neurotoxins from Scorpion Venoms: Mode of Action and Structure-Function Relationships. United States Department of Agriculture, June 1996. http://dx.doi.org/10.32747/1996.7613029.bard.
Full textAbstract:
This study was motivated by the need to develop new means and approaches to the design of future, environmentally-safe, insecticides. Utilization of anti-insect selective toxins from scorpion venoms and clarification of the molecular basis for their specificity, are a major focus in this project and may have an applicative value. Our study concentrated on the highly insecticidal toxin, LqhaIT, and was devoted to: (I) Characterization of the neuropharmacological and electrophysiological features of this toxin. (II) Establishment of a genetic system for studying structure/activity relationships of the toxin. (III) Analysis of the insecticidal efficacy of an entomopathogenic baculovirus engineered and expressing LqhaIT. The results obtained in this project suggest that: 1) The receptor binding site of LqhaIT on insect sodium channels differs most likely from its analogous receptor site 3 on vertebrate sodium channels. 2) The effects of LqhaIT are presynaptic. Hyperexcitation at the neuromuscular results from dramatic slowing of sodium channel inactivation and enhanced peak sodium currents causes by LqhaIT. 3) The putative toxic surface of LqhaIT involves aromatic and charged amino acid residues located around the C-terminal region and five-residue-turn of the toxin (unpublished). 4) The anti-insect/anti-mammalian toxicity ratio can be altered by site-directed mutagenesis (publication 8). This effect was partly shown at the level of sodium channel function. 5) The insecticidal efficacy of AcNPV baculovirus increased to a great extent when infection was accompanied by expression of LqhaIT (publication 5).
2
Peter, J. M., M. G. Gadd, C. Jiang, and J. Reyes. Organic geochemistry and petrology of sedimentary exhalative Pb-Zn and polymetallic hyper-enriched black shale deposits in the Selwyn Basin, Yukon. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328017.
Full textAbstract:
Paleozoic strata of the Selwyn Basin host sedimentary exhalative (SEDEX) Pb-Zn deposits, and age-correlative strata of the Richardson trough host polymetallic hyper-enriched black shale (HEBS) deposits. In both deposit types, organic matter is spatially and temporally associated with mineralization. We investigated the characteristics of organic matter in mineralization and unmineralized host rocks in the XY Central SEDEX deposit in the Howard's Pass district, and the Nick and Peel River HEBS deposits in the Richardson trough using Rock-Eval pyrolysis, organic petrography, and solvent extraction and gas chromatography mass spectrometry (GCMS) analysis of the soluble organic matter (SOM). All samples experienced extremely high thermal maturity (Tmax up to 599°C), indicating they contain low SOM. Rock-Eval parameters S1, S2, HI, and OI values are low. Total organic carbon (TOC) values are low for Nick and Peel River and are generally higher for XY Central. Residual carbon values are universally high. Mineral carbon values are low for deposits studied (one outlier). Pyrobitumen reflectance is mostly below 5.80%. Full-scan GCMS analyses of SOM reveal that most, if not all, high molecular weight hydrocarbons, including biomarkers, have been lost due to thermal cracking and many detected peaks are likely due to contaminants introduced during sampling.
3
Swanson, David, and Celia Hampton-Miller. Drained lakes in Bering Land Bridge National Preserve: Vegetation succession and impacts on loon habitat. National Park Service, January 2023. http://dx.doi.org/10.36967/2296593.
Full textAbstract:
The northern coastal plain of Bering Land Bridge National Preserve (BELA) lost lakes at an alarming rate over the first two decades of this century, including four lakes over 100 ha in size in 2018-2019 alone. To understand the effects of these lake drainages, we sampled vegetation of these lakes in 2019 (a reconnaissance visit) and 2021 (for the installation of permanent vegetation monitoring plots). We used these data to summarize the changes that occurred in the first three years after drainage, and to create vegetation maps from 3-m resolution satellite images coinciding with the visit dates. We used time series of these satellite images to study the rate of drainage and vegetation colonization on the lakes. We analyzed our existing data from older drained lake basins (estimated to be more than 200 years since drainage) and reviewed the literature on vegetation change in drained lakes to understand the vegetation changes that are likely in the future. Finally, we used a model of lake occupancy by loons developed by Mizel et al. (2021) to predict the effect of the 2018-2019 lake drainages on available loon habitat, using both our detailed maps of the four sampled drained lakes, and also data on all drained lakes over most of northern BELA derived from Landsat satellite images. Our results show that the four study lakes drained early in the summer, before the end of June, in 2018 (3 lakes) and 2019 (one lake). A combination of record warm weather and heavy snowfall made 2018 and 2019 especially favorable for lake drainage: thaw subsidence probably enlarged existing drainage outlet channels from the lakes, and large amounts of spring snowmelt runoff deepened the outlet channels by thermal erosion (the combination of thaw and erosion). Drainage exposed moist loamy sediment on the lake bottoms that was rapidly colonized by plants. Substantial vegetation cover developed by late summer in the same year as lake drainage in one lake, in the first post-drainage summer in a second lake, and during the 2nd year after drainage in the remaining two lakes. The first vegetation communities to develop consisted of just one or two dominant species, notably Eleocharis acicularis (spike rush), Equisetum arvense (horsetail), and/or Tephroseris palustris (mastodon flower). Other important early species were Arctophila fulva (pendant grass) and Rorippa palustris (yellow cress). By year 3, the communities had become more diverse, with significant cover by taller wetland graminoid species, including A. fulva, Eriophorum scheuchzeri, and Carex aquatilis. Frozen soil was observed in most locations on the lakes in July of 2021, suggesting that permafrost was forming on the lake bottoms. Comparison of the three-year trends in vegetation change with data from older lake basins suggest that ultimately most lake basins will develop wet tundra communities dominated by Carex aquatilis and mosses, with various low shrub species on acid, peat-dominated soils and permafrost; however, this process should take several centuries. The loon habitat model suggests that drainage essentially eliminated the potential habitat for Yellow-billed Loons on the four study lakes, because the residuals ponds were too small for Yellow-billed Loons to take flight from. A total of 17 lakes drained in northern BELA in 2018-2019. As a result, the potential Yellow-billed Loon nesting habitat in northern BELA probably decreased by approximately 2%, while habitat for Pacific Loons decreased less, by about 0.6%. Habitat for the more abundant Red-throated Loons probably increased slightly as a result of lake drainage, because of their ability to use the small residual ponds created by lake drainage.
4
VanderGheynst, Jean, Michael Raviv, Jim Stapleton, and Dror Minz. Effect of Combined Solarization and in Solum Compost Decomposition on Soil Health. United States Department of Agriculture, October 2013. http://dx.doi.org/10.32747/2013.7594388.bard.
Full textAbstract:
In soil solarization, moist soil is covered with a transparent plastic film, resulting in passive solar heating which inactivates soil-borne pathogen/weed propagules. Although solarization is an effective alternative to soil fumigation and chemical pesticide application, it is not widely used due to its long duration, which coincides with the growing season of some crops, thereby causing a loss of income. The basis of this project was that solarization of amended soil would be utilized more widely if growers could adopt the practice without losing production. In this research we examined three factors expected to contribute to greater utilization of solarization: 1) investigation of techniques that increase soil temperature, thereby reducing the time required for solarization; 2) development and validation of predictive soil heating models to enable informed decisions regarding soil and solarization management that accommodate the crop production cycle, and 3) elucidation of the contributions of microbial activity and microbial community structure to soil heating during solarization. Laboratory studies and a field trial were performed to determine heat generation in soil amended with compost during solarization. Respiration was measured in amended soil samples prior to and following solarization as a function of soil depth. Additionally, phytotoxicity was estimated through measurement of germination and early growth of lettuce seedlings in greenhouse assays, and samples were subjected to 16S ribosomal RNA gene sequencing to characterize microbial communities. Amendment of soil with 10% (g/g) compost containing 16.9 mg CO2/g dry weight organic carbon resulted in soil temperatures that were 2oC to 4oC higher than soil alone. Approximately 85% of total organic carbon within the amended soil was exhausted during 22 days of solarization. There was no significant difference in residual respiration with soil depth down to 17.4 cm. Although freshly amended soil proved highly inhibitory to lettuce seed germination and seedling growth, phytotoxicity was not detected in solarized amended soil after 22 days of field solarization. The sequencing data obtained from field samples revealed similar microbial species richness and evenness in both solarized amended and non-amended soil. However, amendment led to enrichment of a community different from that of non-amended soil after solarization. Moreover, community structure varied by soil depth in solarized soil. Coupled with temperature data from soil during solarization, community data highlighted how thermal gradients in soil influence community structure and indicated microorganisms that may contribute to increased soil heating during solarization. Reliable predictive tools are necessary to characterize the solarization process and to minimize the opportunity cost incurred by farmers due to growing season abbreviation, however, current models do not accurately predict temperatures for soils with internal heat generation associated with the microbial breakdown of the soil amendment. To address the need for a more robust model, a first-order source term was developed to model the internal heat source during amended soil solarization. This source term was then incorporated into an existing “soil only” model and validated against data collected from amended soil field trials. The expanded model outperformed both the existing stable-soil model and a constant source term model, predicting daily peak temperatures to within 0.1°C during the critical first week of solarization. Overall the results suggest that amendment of soil with compost prior to solarization may be of value in agricultural soil disinfestations operations, however additional work is needed to determine the effects of soil type and organic matter source on efficacy. Furthermore, models can be developed to predict soil temperature during solarization, however, additional work is needed to couple heat transfer models with pathogen and weed inactivation models to better estimate solarization duration necessary for disinfestation.
5
Abbo, Shahal, Hongbin Zhang, Clarice Coyne, Amir Sherman, Dan Shtienberg, and George J. Vandemark. Winter chickpea; towards a new winter pulse for the semiarid Pacific Northwest and wider adaptation in the Mediterranean basin. United States Department of Agriculture, January 2011. http://dx.doi.org/10.32747/2011.7597909.bard.
Full textAbstract:
Original objectives: [a] Screen an array of chickpea and wild annual Cicer germplasm for winter survival. [b] Genetic analysis of winter hardiness in domesticated x wild chickpea crosses. [c] Genetic analysis of vernalization response in domesticated x wild chickpea crosses. [d] Digital expression analysis of a core selection of breeding and germplasm lines of chickpea that differ in winter hardiness and vernalization. [e] Identification of the genes involved in the chickpea winter hardiness and vernalization and construction of gene network controlling these traits. [f] Assessing the phenotypic and genetic correlations between winter hardiness, vernalization response and Ascochyta blight response in chickpea. The complexity of the vernalization response and the inefficiency of our selection experiments (below) required quitting the work on ascochyta response in the framework of this project. Background to the subject: Since its introduction to the Palouse region of WA and Idaho, and the northern Great Plains, chickpea has been a spring rotation legume due to lack of winter hardiness. The short growing season of spring chickpea limits its grain yield and leaves relatively little stubble residue for combating soil erosion. In Israel, chilling temperatures limit pod setting in early springs and narrow the effective reproductive time window of the crop. Winter hardiness and vernalization response of chickpea alleles were lost due to a series of evolutionary bottlenecks; however, such alleles are prevalent in its wild progenitor’s genepool. Major conclusions, solutions, achievements: It appears that both vernalization response and winter hardiness are polygenic traits in the wild-domesticated chickpea genepool. The main conclusion from the fieldwork in Israel is that selection of domesticated winter hardy and vernalization responsive types should be conducted in late flowering and late maturity backgrounds to minimize interference by daylength and temperature response alleles (see our Plant Breeding paper on the subject). The main conclusion from the US winter-hardiness studies is that excellent lines have been identified for germplasm release and continued genetic study. Several of the lines have good seed size and growth habit that will be useful for introgressing winter-hardiness into current chickpea cultivars to develop releases for autumn sowing. We sequenced the transcriptomes and profiled the expression of genes in 87 samples. Differential expression analysis identified a total of 2,452 differentially expressed genes (DEGs) between vernalized plants and control plants, of which 287 were shared between two or more Cicer species studied. We cloned 498 genes controlling vernalization, named CVRN genes. Each of the CVRN genes contributes to flowering date advance (FDA) by 3.85% - 10.71%, but 413 (83%) other genes had negative effects on FDA, while only 83 (17%) had positive effects on FDA, when the plant is exposed to cold temperature. The cloned CVRN genes provide new toolkits and knowledge to develop chickpea cultivars that are suitable for autumn-sowing. Scientific & agricultural implications: Unlike the winter cereals (barley, wheat) or pea, in which a single allelic change may induce a switch from winter to spring habit, we were unable to find any evidence for such major gene action in chickpea. In agricultural terms this means that an alternative strategy must be employed in order to isolate late flowering – ascochyta resistant (winter types) domesticated forms to enable autumn sowing of chickpea in the US Great Plains. An environment was identified in U.S. (eastern Washington) where autumn-sown chickpea production is possible using the levels of winter-hardiness discovered once backcrossed into advanced cultivated material with acceptable agronomic traits. The cloned CVRN genes and identified gene networks significantly advance our understanding of molecular mechanisms underlying plant vernalization in general, and chickpea in particular, and provide a new toolkit for switching chickpea from a spring-sowing to autumn-sowing crop.
6
FEASIBILITY STUDY OF VISCOELASTIC HYBRID SELF-CENTERING BRACE (VSCB) FOR SEISMIC-RESISTANT STEEL FRAMES. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.113.
Full textAbstract:
The practicability of existing self-centering braces is largely limited by their small deformability and insufficient energy dissipation. This paper presents a new type of velocity-dependent self-centering brace called viscoelastic self-centering brace (VSCB), which employs viscoelastic dampers (VED) and SMA cables as the kernel elements. The SMA cables can offer large recoverable deformation, and the viscoelastic dampers, which are velocity-dependent, provide considerable energy dissipation under high-frequency loading excitations but tend to have less detrimental influence on the self-centering capability during the shakedown of the system. A comprehensive system-level analysis on three carefully designed prototype buildings was conducted, including a buckling restrained braced frame (BRBF), a pure self-centering braced frame (SCBF) and a viscoelastic self-centering braced frame (VSCBF). The results show that compared with the SCBF, the VSCBF maintains the benefit of small residual inter-story drift (RID) and in addition, exhibits obviously reduced peak inter-story drift (PID) and peak floor acceleration (PFA).