Dissertations / Theses on the topic 'Plant diagnosis'
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Fisal, Zahedi B. "Real-time process plant fault diagnosis." Thesis, Aston University, 1989. http://publications.aston.ac.uk/9703/.
Full textTrenchard, Andrew J. "Process plant alarm diagnosis using synthesised fault tree knowledge." Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/7258.
Full textJalel, Nameer Adnan. "Fault diagnosis and accident analysis in nuclear power plant." Thesis, University of Sheffield, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335950.
Full textLardner, Richard. "Early diagnosis and detection of Eutypa dieback of grapevines." Title page, table of contents and abstract only, 2003. http://hdl.handle.net/2440/37969.
Full textThesis (Ph.D.) -- University of Adelaide, School of Agriculture and Wine, 2003.
Pramanik, Saugata. "A Hybrid Knowledge-Based System for Process Plant Fault Diagnosis." Thesis, Indian Institute of Science, 1989. http://hdl.handle.net/2005/83.
Full textHughes, Kelvin J. D. "Molecular methods for the diagnosis of fungal quarantine plant pathogens." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272031.
Full textGemmell, Brian David. "A consultative expert system for intelligent diagnosis on steam turbine plant." Thesis, University of Strathclyde, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340915.
Full textSharif, Mohamed Abdulla Mohamed. "Application of intelligent instrumentation in process plant condition monitoring and fault diagnosis." Thesis, Cardiff University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340896.
Full textGöpfert, Johannes Georg. "Model-based fault diagnosis via structural analysis of a reverse osmosis plant." Master's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/19043.
Full textSILVA, AUCYONE A. da. "An integrated approach for plant monitoring and diagnosis using multiresolution wavelet analysis." reponame:Repositório Institucional do IPEN, 1997. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11643.
Full textMade available in DSpace on 2014-10-09T14:09:13Z (GMT). No. of bitstreams: 1 12438.pdf: 5594991 bytes, checksum: f79284c9b5ba64cbc05b0ee1eb78ef64 (MD5)
Tese (Doutoramento)
IPEN/T
The University of Tennessee
Zhongyi, Cai. "Vibration diagnosis of elastic shafts with a transverse crack." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2011. https://ro.ecu.edu.au/theses/405.
Full textYrigoyen, González Haydée Andrea. ""Environmental Diagnosis of Process Plants by Life Cycle Techniques"." Doctoral thesis, Universitat Rovira i Virgili, 2006. http://hdl.handle.net/10803/8559.
Full textHaydée A. Yrigoyen González
El objetivo de la investigación es desarrollar una herramienta que relacione aspectos de
simulación, evaluación ambiental y análisis de sensibilidad. Para lo cual se estableció una
metodología que consta de cinco niveles: Simulación de proceso, Inventario, evaluación de
impactos ambientales, análisis económico y análisis de sensibilidad.
La metodología describe las variables relacionadas con el proceso, así como los
impactos asociados a cada una de sus etapas y la viabilidad económica del proceso, e
identifica las etapas de proceso con el mayor impacto ambiental (mediante el análisis de
sensibilidad).
Para la simulación de procesos se empleó el simulador ASPEN Hysys®. El inventario,
la evaluación de impactos y el análisis económico se lleva a cabo en hojas de cálculo de forma
automática.
La obtención del inventario de efectos ambientales y la evaluación de los
correspondientes impactos se realizan siguiendo la metodología de ciclo de vida, por lo que se
consideran las cargas ambientales asociadas a las materias primas, la generación de
electricidad y utilidades. Para obtener el inventario se construyó una base de datos que
contiene la información ambiental asociada a varios procesos industriales que se relacionan
indirectamente al proceso bajo estudio. Similarmente, se incluyó una base de datos con los
factores de caracterización de las categorías de impacto más importantes.
La validación de la metodología y de la herramienta desarrollada se ha llevado a cabo
mediante tres procesos industriales: polietileno de baja densidad (LDPE), óxido de etileno (EO)
y biodiesel. Para cada proceso se han evaluado diferentes configuraciones para poder
determinar cual de ellas es la mejor opción desde el punto de vista ambiental y económico.
En el caso del LDPE, el cambio de configuración se ha enfocado en el origen de la
electricidad, la cual puede ser proveniente de la Red Nacional Española o de una unidad de
cogeneración. Los resultados indican que la mejor configuración corresponde al proceso que
emplea electricidad proveniente de la unidad de cogeneración, puesto que se obtiene vapor
como sub-producto y se evitan las emisiones asociadas a la generación de electricidad, lo que
se refleja en una importante reducción de los impactos ambientales asociados.
En el segundo proceso analizado, referente a la producción de oxido de etileno, se han
evaluado cuatro configuraciones, empleando aire u oxígeno como materia prima y electricidad
de la Red Española o produciéndola mediante cogeneración. En relación al origen de la
electricidad, al emplear la cogeneración, el comportamiento ambiental del proceso mejora
considerablemente. En cuanto a la importancia de la materia prima empleada, al utilizar
oxígeno se obtiene un mejor rendimiento en la etapa de reacción, con lo cual se compensa los
costes asociados a la materia prima con la productividad del proceso.
Finalmente, se ha llevado a cabo la evaluación del proceso de producción de biodiesel,
se comparó el comportamiento ambiental del proceso empleando un catalizador ácido y un
catalizador básico. En el proceso ácido se generan menores impactos ambientales. De forma
similar, ésta configuración tiene un mejor perfil económico ya que los costes asociados a la
producción son menores y no se requiere ninguna unidad de pretratamiento (necesaria en el
proceso alcalino).
Mediante la herramienta desarrollada, la información inicial puede modificarse en
cualquier momento con el fin de obtener los valores correspondientes a nuevas condiciones.
Uno de los aspectos más importantes es el que la herramienta se adapta fácilmente con el
mínimo de variaciones. Las bases de datos que se incluyen en las hojas de cálculo pueden ser
actualizadas por el usuario o ajustarse a las necesidades específicas de cada proceso. Todo el
análisis se lleva a cabo de forma automática, una vez introducida la información inicial del
proceso e información económica.
Environmental Diagnosis of Process Plants by Life Cycle Techniques
Haydée A. Yrigoyen González
The objective of this work is to develop a tool that integrates simulation, environmental
assessment and sensitivity analysis aspects. To support this tool, a methodology consisting of
five levels was established. These are: process simulation, Inventory, environmental impacts
assessment, economic analysis and sensitivity analysis.
The developed methodology describes the variables related to the process, as well as
the impacts associated to each stages, the economic viability of the process, and the process
stages with the highest environmental impact (by means of the sensitivity analysis).
ASPEN Hysys® is the chosen software for the simulation of processes. The inventory,
impact assessment and the economic analysis are automatically obtained in spreadsheets, by
means of macros execution.
The inventory and the impacts assessment are performed following the Life Cycle
methodology. Therefore, the environmental loads of the raw materials, electricity generation and
utilities are considered. In order to generate the inventory, a data base was constructed; it
contains the environmental information associated to industrial processes that are indirectly
related to the process under study. Similarly, a data base with the characterization factors of the
most important impact categories was included in the tool.
The validation of the methodology and the developed tool has been accomplished by
their application to three industrial processes: low density polyethylene (LDPE), ethylene oxide
(EO) and biodiesel production. Different configurations have been evaluated for each process to
determine the best option from the environmental and economic point of view.
For the LDPE process, the configuration change has focused in the origin of the
electricity, which can be supplied by the Spanish National Network or a cogeneration unit.
Based on our results, the best configuration corresponds to the process employing electricity by
cogeneration, since steam is obtained as by-product and the emissions associated to the
electricity generation are eliminated. These facts are reflected in an important reduction of the
overall impacts associated to this process.
In the second analyzed process, referring to the production of ethylene oxide, four
configurations have been evaluated: using air or oxygen as raw material and electricity from the
Spanish Network or produced by cogeneration. Related to the origin of the electricity, using
cogeneration, a better environmental profile is obtained. On the other hand, the oxygen as raw
material is better than air due to the best yield of ethylene oxide in the reaction stage. Due to
the better selectivity of the oxygen in the reaction, the costs of O2 as raw material are
compensated by high production.
Finally, the process evaluation of the biodiesel production has been carried out. In this
case, an acid and a basic catalyst were compared. The best configuration corresponds to the
process using an acid catalyst. In the acid process lower environmental impacts are generated.
Furthermore, this configuration has a better economical profile since the costs associated to the
production are smaller and a pre-treatment unit is not required, as in the alkaline process.
The initial information can be modified at any time to obtain the profile associated to the
new conditions by means of the developed tool. Also, the tool can be adapted to any process in
an easy way. The included database can be updated or adjusted by the user at any time to
personalize them to the specific necessities of each process. Once the initial information is
introduced, the analysis is executed automatically.
The developed tool is able to make the simulation, its environmental diagnosis,
economic evaluation and the sensitivity analysis of any industrial process, introducing the initial
operation conditions.
Wallace, Sara Elizabeth. "Detection and Diagnosis of Red Leaf Diseases of Grapes ( Vitis spp.) in Oklahoma." Thesis, Oklahoma State University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10846056.
Full textThe grape industry in Oklahoma was valued at $98 million in 2010. In 2015, symptoms resembling Grapevine Leafroll disease were observed, but Grapevine Leafroll-associated Viruses were not detected using enzyme-linked immunosorbent assay (ELISA). A 2-year Cooperative Agricultural Pest Survey was initiated to determine the etiology of the red leaf symptoms in Oklahoma vineyards. In 2016, a total of 121 symptomatic grapevines from 13 counties were sampled and 96 symptomatic grapevines from 14 counties were sampled in 2017. Each sample was tested for Grapevine Red Blotch Virus (GRBV), Xylella fastidiosa (Pierce’s Disease), and ‘Candidatus Phytoplasma spp,’ by polymerase chain reaction (PCR). ELISA was used to test for Grapevine Leafroll associated Virus (GLRaV) strains 1,3 and 4 strains. Rotbrenner, caused by Pseudopezicula traceiphila, (2017 only), can be found in xylem from petioles and the xylem was examined morphologically for signs of fungal structures. In 2016, GRBV was detected in 38% of 121 symptomatic samples, GLRaV-1 and -3 were detected in 16%, GLRaV 4 strains were detected in 2%, and X. fastidiosa was detected in 2%. There were no detections of ‘Ca Phytoplasma spp’ in 2016 or 2017. In 2017, GRBV was detected in 34% of the 96 samples, GLRaV-1 and -3 were detected in 17%, GLRaV 4 strains were detected in 3%, and X. fastidiosa was detected in 3%. Rotbrenner was not detected in any of the samples in 2017. The findings of this survey provide information to Oklahoma grape growers and extension personnel about the cause of red leaf diseases affecting grapevines so that appropriate management strategies can be implemented in the near future.
Hashemi, Siavash. "Expert systems application to nuclear power plant malfunction diagnosis and sensor data validation /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487587604130191.
Full textIyun, Oluwatope Ebenezer. "Plant-wide diagnosis : cause-and-effect analysis using process connectivity and directionality information." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9296.
Full textRamiro, Juliana. "Detecção molecular de fungos fitopatogênicos associados às sementes de soja." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-28042015-143631/.
Full textSeed-born pathogenic fungi in soybean can cause serious damage to the crop, as well as direct damage by reducing seeds germination, vigor and emergence. The detection and accurate identification of plant pathogens is one of the most important strategies to initiate preventive and curative measures in the management of plant diseases. Particular attention should be taken in the detection of pathogens in seeds in order to avoid introduction and spread of pathogens in areas where they do not occur. The traditionally used methods for detection and identification of seed-born pathogenic fungi are often time consuming, laborious and require extensive knowledge of classical taxonomy. Molecular methods have been used to detect, identify and quantify a long list of plant pathogenic fungi. Quantitative real time polymerase chain reaction (qPCR) is currently considered the most efficient technique for the detection of pathogens because it does not require specialized taxonomical knowledge to interpret its results. Given the importance and implications of rapid and successful diagnosis of seed-born pathogenic fungi in soybean, this study aimed to establish a qPCR methodology to increase the detection efficiency of plant pathogenic fungi Sclerotinia sclerotiorum, Colletotrichum truncatum, Phomopsis spp. and Corynespora cassiicola, the most commonly occurring seed-born pathogenic fungi. Primers and TaqMan® hydrolysis probes were designed for these four pathogens and tested for specificity and sensitivity. Standard curves were established to quantify these pathogens, based on serial dilutions of the target DNA and specific primers and probes. Samples of naturally infected soybean seed from the states of Goiás, Minas Gerais and Paraná were subjected to detection tests using qPCR and traditional methods, for comparison purposes. From all primers and probes designed, only those for Phomopsis spp. and S. sclerotiorum showed up specificity and sensitivity, enabling their use to detect of these pathogens. Detection by traditional tests, resulted in a maximum Phomopsis spp. incidence of 2.75% in a sample from Minas Gerais and S. sclerotiorum was not detected in any of the samples. The detection and quantification of these pathogens by qPCR revealed the presence of Phomopsis spp. in all tested samples, the highest incidence level of 6.75% in a sample from Minas Gerais. S. sclerotiorum was not detected in any sample assessed by qPCR method. In comparison with traditional methods, qPCR was more sensitive in detecting Phomopsis spp. in soybean seeds.
Nascimento, Aline Kelly Queiroz do. "Technological innovations for diagnosis of plant viruses and characterization from biotypes of cowpea aphid-borne mosaic virus." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13205.
Full textPlant virus identification and characterization can be achived by several methods based in the biological, morphological, cytological, serological and molecular virus properties. The molecular properties have been used with frequency for vÃrus identification and characterization and the reverse transcription polymerase chain reaction (RT-PCR) has constituted an efficient and precise method for researches with RNA plant viruses. On the other hand, the enzyme-linked immunosorbent assay (ELISA) is the most used serological method for virus detection in plant tissues. A techncal innovation developed for plant virus identification represents a great technological development and support for plant virus research. A new approach involving virus particle immune precipitation to be used for RNA amplification by RT-PCR named IP-RT-PCR was sucessefuly used for amplification of RNA fragments from five virus species from the genera Comovirus, Cucumovirus, Potyvirus and Sobemovirus. Considering that the immune biological Companies have developed several DAS-ELISA kits, but neither of them produce and commercialize PTA-ELISA kits, a simple and practical PTA-ELISA kit was developed and validated for plant virus detection. The second part of the research had the objective to study, comparatively, the biological, serological and molecular properties of four plant virus isolates obtained from naturally infected Passiflora edulis (PWV-PET and PWV-GUA) and from naturally infected Vigna unguiculata (CABMV-BV and CABMV-FOR) with the objective to elucidate the identity of the causal agent of passion fruit woodiness in Brazil. In host range studies onle Canavalia ensiformes and Macroptilium lathyroides were infected by virus isolates obtained from cowpea and from passion fruit. The isolate PWV-GUA was purified from systemically infected M. lathyroides plants and the virus purified preparation (18.24 mg of virus.ml-1) was used for rabitt immunization for polyclonal antiserum production, which showed a title of 1:128,000 in PTA-ELISA. The electrophoresis analysis of the purified virus showed a unique capsidial protein with 34 kDA. Plant virus interaction studies in C. ensiformis indicated unilateral cross protection between PWV-GUA and CABMV-FOR. On the other hand, the isolate PWV-PET did not cross protect passion fruit plants against PWV-GUA. Filogenetic analysis of nucleotiode sequencies from cDNA fragments corresponding to coat protein (CP) genes amplified by IP-RT-PCR from the genomic virus isolates compared with virus sequencies from the Genbank grouped according to the host specifities. Based on the biological, serological and mainly molecular results, the virus isolates studied were classified into two biotypes: Biotype CABMC-C (Cowpea) to include isolates obtained from cowpea that do not infect passion fruit, and biotype CABMV-P (Passion fruit) to include the virus isolates responsible for the passion fruit woodiness in Brazil.
A identificaÃÃo e a caracterizaÃÃo de vÃrus de planta podem ser realizadas por vÃrios mÃtodos envolvendo propriedades morfolÃgicas, biolÃgicas, citolÃgicas, moleculares e sorolÃgicas. As tÃcnicas moleculares tÃm sido usadas com frequencia para identificaÃÃo e caracterizaÃÃo de vÃrus, e a tÃcnica de âreverse transcription polymerase chain reactionâ (RT-PCR) tem se constituÃdo em mÃtodo eficiente e preciso para pesquisas com vÃrus de planta com genoma de RNA. De outra parte, a tÃcnica de enzyme-linked immunosorbent assay (ELISA) constitui o mÃtodo sorolÃgico mais usado para detecÃÃo de vÃrus em tecidos vegetais. Uma inovaÃÃo tecnolÃgica desenvolvida nesta pesquisa para diagnose de vÃrus de planta representa grande avanÃo tecnolÃgico e suporte para pesquisa em virologia vegetal. A inovaÃÃo envolvendo a imunoprecipitaÃÃo (IP) de partÃculas de vÃrus para uso na RT-PCR denominada de IP-RT-PCR foi usada com sucesso para amplificaÃÃo de fragmentos de RNA de cinco espÃcies de vÃrus dos gÃneros Comovirus, Cucumovirus, Potyvirus e Sobemovirus. Considerando que kits de DAS-ELISA tÃm sido produzidos e comercializados por companhias de imunobiologicos, mas nenhuma companhia produz kits de PTA-ELISA, um kit simples e prÃtico de PTA-ELISA foi desenvolvido e validado para detecÃÃo de vÃrus de planta. A segunda etapa da pesquisa teve como objetivo estudar as propriedades biolÃgicas, sorolÃgicas e moleculares de isolados de vÃrus do gÃnero Potyvirus obtidos de maracujazeiro (Passiflora edulis) (PWV-PET e PWV-GUA) e isolados de Cowpea aphid-borne mosaic virus (CABMV-FOR e CABMV-BV) obtidos de feijoeiro caupi (Vigna unguiculata), visando elucidar a identidade do agente causal do endurecimento dos frutos do maracujazeiro no Brasil. Em estudos de gama de plantas hospedeiras, somente Canavalia ensiformis e Macroptilium lathyroides foram infetadas por isolados obtidos de maracujazeiro e de feijoeiro caupi. O PWV-GUA foi purificado a partir de plantas de M. lathyroides sistemicamente infetadas e a preparaÃÃo viral purificada (18,24 mg de vÃrus.ml-1) foi usada para imunizaÃÃo de coelho com a produÃÃo de antissoro policlonal com tÃtulo de 1:128.000 em PTA-ELISA. AnÃlise eletroforÃtica da preparaÃÃo viral purificada revelou uma Ãnica proteÃna capisidial com peso molecular de 34 kDa. Experimentos de interaÃÃo entre os isolados virais em C. ensiformis indicaram proteÃÃo unilateral entre PWV-GUA e CABMV-FOR. De outra parte, o isolado PWV-PET nÃo protegeu plantas de maracujazeiro contra a super infecÃÃo de PWV-GUA. AnÃlises filogenÃticas das seqÃÃncias dos fragmentos de cDNA correspondentes Ãs capas protÃicas (CP), amplificados a partir dos genomas dos isolados virais de maracujazeiro e de feijoeiro caupi por IP-RT-PCR, agruparam-se com as seqÃÃncias de isolados virais de referidas culturas depositadas no GenBank, apresentando um agrupamento em funÃÃo da especificidade de hospedeiros. Com base nos resultados dos estudos biolÃgicos, sorolÃgicos e, sobretudo moleculares, os isolados virais estudados foram classificados em dois biÃtipos: BiÃtipo CABMV-C (Cowpea) incluindo os isolados obtidos de feijoeiro caupi e biÃtipo CABMV-P (Passion fruit) para incluir os isolados responsÃveis pelo endurecimento dos frutos do maracujazeiro no Brasil.
Camargo, Anyela. "An automatic system for the detection, diagnosis and control of plant diseases and other agents." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426137.
Full textWang, Peng. "Intelligent signal/image processing for fault diagnosis and prognosis." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/13308.
Full textOuyang, Jun. "A methodological study on fault diagnosis and simulation of man-machine scenario in accident for nuclear power plant." Kyoto University, 2006. http://hdl.handle.net/2433/135553.
Full text0048
新制・課程博士
博士(エネルギー科学)
甲第12618号
エネ博第136号
新制||エネ||34(附属図書館)
UT51-2006-S626
京都大学大学院エネルギー科学研究科エネルギー社会・環境科学専攻
(主査)教授 手塚 哲央, 教授 三島 嘉一郎, 助教授 下田 宏
学位規則第4条第1項該当
Nastaro, Beatriz. "Parâmetros morfogênicos, nutricionais e produtivos do capim-piatã suprido com combinações de doses de nitrogênio e enxofre." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-14032013-172627/.
Full textPiatã cultivar of Brachiaria brizantha is a recently released forage grass to be used in brazilian pastures and research on mineral nutrition of this grass is scarce. Nitrogen is the main nutrient to increase forage productivity, but the association with sulphur can influence plant response to fertilization. Through the combination of nitrogen rates with sulphur rates, the objective was to study the morphological, nutritional and productive characteristics of Piatã palissadegrass grown in nutrient solution, by using ground quartz as substrate. The experiment was conducted in greenhouse and five rates of nitrogen (2, 9, 16, 23 and 30 mmol L-1) were combined with five rates of sulphur (0.1, 0.7, 1.3, 1.9 and 2.5 mmol L-1) in a 52 fractionated factorial set in randomized block design, with four replications. Plants were harvested two times, the first harvest was done 44 days after transplanting and the second one was 25 days after the first harvest. The interaction nitrogen rates x sulphur rates was significant for the total number of leaves and tillers, leaf appearance rate, phyllochron, leaf area, dry mass of shoots and roots, SPAD value, root length and root surface, nitrogen and sulphur concentrations in the diagnostic leaves and roots, nitrate concentration and total nitrogen:total sulphur ratio in at least one of the two growth cycles of Piatã palissadegrass. High nitrogen and sulphur rates maximized growth of shoots and roots of the plants. High nitrogen rates resulted in low specific root length and sulfate-sulphur:total sulphur ratio (SSO4: St) in diagnostic leaves, in addition to increasing the activity of the nitrate reductase and ammonium concentration in diagnostic tissue. Sulphur rate about 1.3 mmol L-1 provided the highest specific root length and surface, while the highest sulphur rates (2.5 mmol L-1) maximized sulfate-sulphur concentration and S-SO4:St ratio in diagnostic leaves. There was a significant and positive correlation between the concentration of total nitrogen, SPAD value and total sulphur concentration in diagnostic leaves with plant dry matter production, in both harvests of Piatã palissadegrass. Nitrogen concentration and SPAD value in diagnostic leaves of Piatã palissadegrass can be used as good parameters for assessing the nutritional status of plants in relation to nitrogen, while for the assessment of sulphur nutrition status in diagnostic leaves of Piatã palissadegrass, the concentration of total sulphur and total nitrogen:total sulphur ratio should be taken together.
Salvo, Juliano Gullo de. "Uso do DRIS na avaliação do estado nutricional de plantas cítricas afetadas pela clorose variegada dos citros." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-23052003-140632/.
Full textAmong all factors which affect the yield and fruit quality from citric plants, pests and diseases are of outstanding importance. There are several pests and diseases wich affect the citrus crop. The citrus variegated chlorosis (CVC) is one of the most severe and destructive diseases affecting both yield and quality. Because this disease is caused by a xylem bacteria, the water and nutrients dinamics is affected resulting in a series of visual simptons of different intensities. There objective of this work was to evaluate the nutritional status os citrus plants without visual simptons of CVC and, with different levels of simptons of this disease. The Sufficiency Range Criteria, traditionally used in the state of São Paulo and the Diagnosis and Recommendation Integrated System (DRIS) were the methods used for leaf analysis interpretation. The study was carried out in commercial orchards of 'Pêra' sweet orange budded on 'Cravo' lemom, seven years old, in the region of Araraquara SP. Plants with three levels of CVC and plants without visual simptons were selected from two plots. Concentrations of macronutrients (N, P, K, Ca, Mg, S) and micronutrients (B, Cu, Fe, Mn, Zn) were determined on leaves of fruit branches. Fruit production from each plant was measured. The analysis through the DRIS method involved the utilization of a software developed specially for the citrus crop by the Instituto Agronômico de Campinas IAC, where the method proposed by Jones (1981) was used. The results showed that the DRIS was efficient in ranking the nutrients and indicating the nutritional defficiency for some nutrients considered adequate or excessive by the Sufficiency Range Criteria. Regardless the presence of CVC simptons, all plants show low foliar concentrations of Ca, wich resulted in a diagnose of defficiency by the two criteria of interpretation. There was a foliar concentration reduction of N and P, in plants with more severe simptoms. With respect to the foliar concentration of the other nutrients there was not observed a standard decrease or increase due to CVC. The local DRIS-Citros IAC software norms utilized should be adjusted according to the work conditions and objectives to a improve yield correlation with plant nutrition.
Eggberry, Ivan. "An investigation into a generally applicable plant performance index." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-082922008-100156/.
Full textTairo, Fred. "Molecular resolution of genetic variability of major sweetpotato viruses and improved diagnosis of potyviruses co-infecting sweetpotato /." Uppsala : Dept. of Plant Biology and Foresty Genetics, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200605.pdf.
Full textMalan, Stefanie. "Real time PCR as a versatile tool for virus detection and transgenic plant analysis." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1921.
Full textENGLISH ABSTRACT: South Africa is regarded as one of the top wine producing countries in the world. One of the threats to the sustainability of the wine industry is viral diseases of which Grapevine leafroll-associated virus 3 (GLRaV-3) and Grapevine virus A (GVA) are considered to be the most important and wide spread. Scion material is regularly tested for viruses; however scion material is often grafted onto rootstocks that have questionable phytosanitary status. Virus detection in rootstocks is challenging due to low and varying titres, but is imperative as a viral control mechanism. An additional viral control mechanism is the use of transgenic grapevine material which offers resistance to grapevine infection. The objective of this project was to establish a detection system using real time PCR (qPCR) techniques, to accurately and routinely detect GLRaV-3 and GVA in rootstock propagation material. qPCR would furthermore be used to perform molecular characterisation of transgenic plants containing a GLRaV-3 antiviral ΔHSP-Mut construct. A severely infected vineyard (Nietvoorbij farm) in the Stellenbosch area was screened throughout the grapevine growing season to investigate virus prevalence throughout the season and to determine the optimal time for sensitive virus detection. A large scale screening of nursery propagation material for GLRaV-3 infection was also conducted. The qRT-PCR results were compared to DAS-ELISA results to compare the efficacy and sensitivity of the two techniques. For the severely infected vineyard, the ability to detect GLRaV-3 increased as the season progressed towards winter. qRT-PCR was more sensitive and accurate in detecting GLRaV-3 than DASELISA, as the latter technique delivered numerous false positive results later in the season. The best time to screen for GLRaV-3 in the Western Cape region was from the end of July to September. For the nursery screenings, our qRT-PCR results were compared to the results of the DAS-ELISA performed by the specific nurseries. No GLRaV-3 infection was detected in the specific samples received from the two different nurseries. The results for all the samples correlated between the two techniques. This confirms that the propagation material of these nurseries has a healthy phytosanitary status with regards to GLRaV-3. However, the detection of GVA in the severely infected vineyard yielded inconsistent results. Detection ability fluctuated throughout the season and no specific trend in seasonal variation and virus titre fluctuation could be established. The highest percentage of GVA infected samples were detected during September, April and the end of July. Previously published universal primers were used for the detection of GVA, but further investigation indicated that they might not be suitable for sensitive detection of specific GVA variants present in South Africa. Vitis vinifera was transformed with a GLRaV-3 antiviral construct, ΔHSP-Mut. SYBR Green Real time PCR (qPCR) and qRT-PCR were utilised as alternative methods for molecular characterisation of transgenic plants. The qPCR and Southern blot results correlated for 76.5% of the samples. This illustrated the ability of qPCR to accurately estimate transgene copy numbers. Various samples were identified during qRT-PCR amplification that exhibited high mRNA expression levels of the transgene. These samples are ideal for further viral resistance studies. This study illustrated that the versatility of real time PCR renders it a valuable tool for accurate virus detection as well as copy number determination.
AFRIKAANSE OPSOMMING: Suid Afrika word geag as een van die top wyn produserende lande ter wereld. Die volhoubaarheid van die wynbedryf word onder andere bedreig deur virus-infeksies. Grapevine leafroll associated virus 3 (GLRaV-3) en Grapevine virus A (GVA) is van die mees belangrike virusse wat siektes veroorsaak in Suid-Afrikaanse wingerde. Wingerd bo-stok materiaal word gereeld getoets vir hierdie virusse, maar hierdie materiaal word meestal geënt op onderstokmateriaal waarvan die virus status onbekend is. Virus opsporing in onderstokke word egter gekompliseer deur baie lae en variërende virus konsentrasies, maar opsporing in voortplantingsmateriaal is ‘n noodsaaklike beheermeganisme vir virus-infeksie. Die doel van die projek was om ‘n opsporingsisteem te ontwikkel via kwantitatiewe PCR (qPCR) tegnieke vir akkurate en gereelde toetsing van GLRaV-3 en GVA in onderstokmateriaal. qPCR sal ook verder gebruik word vir molekulêre karakterisering van transgeniese plante wat ‘n GLRaV-3 antivirale ΔHSP-Mut konstruk bevat. ‘n Hoogs geïnfekteerde wingerd was regdeur die seisoen getoets om seisoenale fluktuasies in viruskonsentrasie te ondersoek en om die optimale tydstip vir sensitiewe virus opsporing te bepaal. ‘n Grootskaalse toetsing van kwekery voortplantingsmateriaal vir GLRaV-3 infeksie was ook uitgevoer. Die qRT-PCR resultate is met die DAS-ELISA resultate vergelyk om die effektiwiteit en sensitiwiteit van die twee tegnieke te vergelyk. Vir die hoogs geïnfekteerde wingerd het die GLRaV-3 opsporing toegeneem met die verloop van die seisoen tot en met winter. qRT-PCR was meer sensitief en akkuraat as DAS-ELISA in die opsporing van GLRaV-3, weens verskeie vals positiewe resultate wat later in die seisoen deur die laasgenoemde tegniek verkry is. Die beste tyd om vir GLRaV-3 te toets is vanaf einde Julie tot September. Tydens die kwekery toetsings was qRT-PCR resultate met die DAS-ELISA resultate van die spesifieke kwekerye vergelyk. Geen GLRaV-3 infeksie was waargeneem in die spesifieke monsters wat vanaf die kwekerye ontvang is nie. Die resultate van die twee tegnieke het ooreengestem vir al die monsters wat v getoets is. Dit het bevestig dat die voortplantingsmateriaal van hierdie kwekerye gesonde fitosanitêre status met betrekking tot GLRaV-3 gehad het. Die opsporing van GVA in die geïnfekteerde wingerd het egter wisselvallige resultate gelewer. Opsporing van die virus het ook regdeur die seisoen gefluktueer en geen spesifieke neiging in seisoenale opsporingsvermoë kon gemaak word nie. Die hoogste persentasie GVA geïnfekteerde monsters was waargeneem tydens September, April en die einde van Julie. Voorheen gepubliseerde universele inleiers was gebruik vir die opsporing van GVA, maar verdere ondersoeke het getoon dat hierdie inleiers nie noodwendig geskik is vir sensitiewe opsporing van GVA variante wat teenwoordig is in Suid-Afrika nie. Vitis vinifera was getransformeer met ‘n GLRaV-3 antivirale konstruct, ΔHSP-Mut. SYBR Green Real time PCR (qPCR) en qRT-PCR was ingespan as alternatiewe metodes vir molekulêre karaterisering van transgeniese plante. Die qPCR en Southern-klad resultate het ooreengestem vir 76.5% van die monsters. Dit illustreer die vermoë van qPCR om akkurate kopie-getalle van transgene te bepaal. Verskeie plante is geïdentifiseer tydens qRT-PCR amplifisering wat hoë vlakke van transgeen mRNA uitdrukking getoon het. Hierdie monsters is ideaal vir verdere virus weerstandbiedendheids studies. Hierdie studie het die veelsydigheid van real time PCR bewys en getoon dat dit ‘n kosbare tegniek is vir akkurate virus opsporing sowel as kopie-getal bepaling.
Diorio, Carlos Alberto. "DRIS para a cultura da bananeira na região norte do Paraná." Universidade do Oeste Paulista, 2012. http://bdtd.unoeste.br:8080/tede/handle/tede/400.
Full textThe aim of this study was to establish norms of the Diagnosis and Recommendation Integrated System (DRIS) in the culture of banana (Musa sp) for the subgroup Cavendish. We used 107 leaf samples from plants on farms in the towns of Andirá and Rancho Alegre, both located in Northern Paraná State, cultivars Nanicão and Grande Naine , with and without irrigation, aged 2 to 10 years. Chemical analysis determined the content of leaf 11 nutrients N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn. DRIS norms have been established for less than average productivity of 75 t ha-1, where it was found differences between the patterns of levels of nutrients and DRIS norms developed in this study. It was recommended the need for reprogramming of the quantities of fertilizer to be used according to the results obtained for the N, Ca, Mg, S, Fe and Zn contents presenting below the pre-established standards tracks.
O objetivo do presente trabalho foi estabelecer normas do Sistema Integrado de Diagnose e Recomendação (DRIS) na cultura da banana (Musa sp) para o sub grupo Cavendish. Foram utilizadas 107 amostras foliares de plantas em lavouras situadas nos municípios de Andirá e Rancho Alegre, ambos localizados na Região Norte do Estado do Paraná, cultivares Nanicão e Grande Naine , com e sem irrigação, idade variando entre 2 a 10 anos. As análises químicas foliares determinaram os teores de 11 nutrientes: N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn. Normas DRIS foram estabelecidas para produtividade média igual ou superior a 75 t ha-1, onde constatou-se divergências entre os teores padrões dos nutrientes e os teores das normas DRIS estabelecidas neste estudo. Recomendou-se a necessidade de reprogramação das quantidades a serem utilizadas de fertilizantes de acordo com os resultados obtidos, para N, Ca, Mg, S, Fe, e Zn que apresentaram índices abaixo das faixas padrões pré estabelecidas.
Botelho, Viviane Rodrigues. "Auditoria e diagnóstico de modelos para controladores preditivos industriais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/133143.
Full textThe growing demand for operational improvement and the development of information technology make the use of model predictive controllers (MPCs) a common practice in industry. This kind of controller uses past plant data and a process model to estimate a sequence of control actions to lead the variables to a desired value following an optimal policy. Thus, the model quality is the most important source of MPC performance degradation. This work proposes a series of methods to investigate the controller model quality taking into account its closed loop performance. The methods are based on filtering the simulation errors using the nominal sensitivity function. They are capable detect the impact of modeling problems in the controller performance, and also to locate the controlled variables that have such problems and if it is caused by a model-plant mismatch or unmeasured disturbance. The techniques have the advantage to be setpoint independent, making them flexible to be also used in MPCs with controlled variables working by range. The proposed approach was tested in two simulated case studies The Shell Heavy Oil Fractionator Process and The Quadruple-tanks Process. The methods are also evaluated in process data of the Delayed Coking Unit of a Brazilian refinery. Results indicate that the method is technically coherent and has high potential of industrial application.
Dorighello, Dalton Vinicio 1985. "Versatilidade de Bacillus spp. no controle biológico de doenças de plantas e na promoção de crescimento de soja /." Botucatu, 2017. http://hdl.handle.net/11449/151203.
Full textBanca: Antonio Carlos Maringoni
Banca: Carlos Gilberto Raetano
Banca: Regina Maria Villas Boas de Campos Leite
Banca: Marcelo Augusto Boechat Morandi
Resumo: O mercado de produtos de controle biológico, principalmente os que possuem isolados de Bacillus spp. em sua formulação, tem aumentado significativamente, devido às exigências de diminuição do uso de agrotóxicos e maior sustentabilidade do segmento agrícola. Assim, o presente trabalho teve por objetivos: 1- Avaliar o potencial de bactérias do gênero Bacillus no controle de diferentes doenças de plantas; 2- Selecionar isolados de Bacillus spp. promotores de crescimento da soja e antagonistas a Sclerotinia sclerotiorium; 3- Avaliar o potencial de um produto comercial à base de B. subtilis QST 713 e outro à base de óleo de café torrado para compor um programa de manejo da ferrugem-asiática da soja (Phakopsora pachyrhizi) em aplicação sequencial ou alternada com um fungicida. Inicialmente foi avaliado o efeito de B. subtilis, B. firmus e B. amyloliquefaciens no controle dos patógenos Erysiphe diffusa, Podosphaera xanthii, Sclerotinia sclerotiorum, P. pachyrhizi, Fusarium solani, Fusarium oxysporum f. sp. phaseoli, Colletotrichum lindemuthianum e Corynespora cassiicola em condições controladas. Neste estudo, nenhum dos isolados controlou Erysiphe difusa e Podosphaera xanthii. Em folhas destacadas, todos os isolados reduziram o diâmetro da lesão de S. sclerotiorum e a severidade de P. pachyrhizi, sendo mais efetivos com aplicação preventiva. B. subtilis, B. firmus e B. amyloliquefaciens também inibiram o desenvolvimento de F. oxysporum f. sp. phaseoli, C. cassiicola e C. lindemuthia... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The market of products for biological control, especially formulations using Bacillus spp., has increased significantly, due to the requirements for the reduction of the use of agrochemicals in crop protection and sustainability of the agricultural sector. The objectives of this thesis were: 1- To evaluate the potential of Bacillus in plant disease control; 2- To select isolates of Bacillus spp. for growth promotion of soybean and antagonists to Sclerotinia sclerotiorium; 3- To evaluate the potential of a commercial product based on B. subtilis QST 713 and another product based on roasted coffee oil in order to compose a management program for asian soybean rust (Phakopsora pachyrhizi) in sequential or alternating application with a fungicide. Initially, the effect of B. subtilis, B. firmus and B. amyloliquefaciens on the control of pathogens Erysiphe diffusa, Podosphaera xanthii, Sclerotinia sclerotiorum, P. pachyrhizi, Fusarium solani, Fusarium oxysporum f. sp. phaseoli, Colletotrichum lindemuthianum and Corynespora cassiicola was evaluated under controlled conditions. In this study, Bacillus isolates did not controlled Erysiphe diffusa and Podosphaera xanthii. All isolates were effective in reducing the diameter of the S. sclerotiorum lesion and the severity of P. pachyrhizi, being more effective by preventive application in detached leaf. B. subtilis, B. firmus and B. amyloliquefaciens inhibited the mycelial growth of F. oxysporum f. sp. phaseoli, C. cassiicola and C. lindemuthianum ...
Doutor
Mesquita, Marcos Antonio Machado. "Estado nutricional e normas DRIS para o feijoeiro irrigado em Cristalina, Goiás." Universidade Federal de Goiás, 2013. http://repositorio.bc.ufg.br/tede/handle/tede/6606.
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The cultivation of irrigated common bean is an important economic activity for the city of Cristalina, Goias. The proper management of manure promotes the production of safer, contributing to the economic and environmental sustainability. The Diagnosis and Recommendation Integrated System (DRIS) was developed to provide a diagnosis of the nutritional status of cultivated plants, helping the decision on fertilizer recommendation for crops, being based on the balance of essential nutrients to plants. However, this study aimed to establish reference standards DRIS and assess the nutritional status of irrigated common bean grown in the municipality of Cristalina, GO. In this, there were 86 samples of soil samples, 86 samples from leaf samples and 82 samples of common bean yield in 2009/2010. With the data organized into a database. The database was analyzed from two aspects known as the traditional methods of Critical Levels and Concentration Ranges, and also by the method of DRIS. The attributes B, S, MO and T were considered insufficient, while nutrients Cu, Fe, Mn, Zn, K and P were considered excessive in the soil. Fe, Zn and Mo were the nutrients in the leaves with smaller amplitudes located within the range considered appropriate, nutrients S, Ca and Cu were considered insufficient, and the P, N, and K have been considered excessive in the plant, comparing the criteria established. The DRIS method was more sensitive to diagnose nutritional problems, especially for micronutrients
O cultivo do feijoeiro comum irrigado representa uma importante atividade econômica para o município de Cristalina em Goiás. O manejo adequado da adubação propicia a produção de alimentos mais seguros, contribuindo com a sustentabilidade econômica e ambiental. O Sistema Integrado de Diagnose e Recomendação (DRIS) foi desenvolvido para fornecer um diagnóstico do estado nutricional de plantas cultivadas, auxiliando na decisão sobre a recomendação de adubação para culturas agrícolas, sendo baseado no balanço dos nutrientes essenciais aos vegetais. Este trabalho teve por objetivo estabelecer as normas de referência DRIS e avaliar o estado nutricional do feijoeiro comum irrigado cultivado no município de Cristalina, GO. Foram realizadas 86 coletas de amostras de solo, 86 coletas de amostras de folhas e 82 amostras de produtividade do feijoeiro comum na safra 2009/2010. Com os dados obtidos organizou-se um banco de dados. O banco de dados foi analisado sob duas vertentes, o método tradicional conhecido como métodos dos Níveis Críticos ou Faixas de Concentração, e também, pela metodologia do DRIS. Os atributos B, S, MO e T foram considerados deficientes, enquanto que os nutrientes Cu, Fe, Mn, Zn, K e P foram considerados excessivos no solo. O Fe, Zn e Mo foram os nutrientes nas folhas com menores amplitudes, situadas nas faixas consideradas adequadas; os nutrientes S, Ca e Cu foram considerados deficientes, e o P, N, e K foram considerados excessivos na planta, comparando aos critérios estabelecidos. O método DRIS apresentou maior sensibilidade para diagnosticar problemas nutricionais, especialmente, para micronutrientes.
Nagy-Kiss, Anca Maria. "Analyse et synthèse de multimodèles pour le diagnostic : application à une station d’épuration." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL078N/document.
Full textThis thesis deals with analysis and synthesis of multiple model structures for model simplification, state estimation and diagnosis of nonlinear systems represented by one or several time-scales. This work aims, at first, to develop a systematic procedure to transform a nonlinear system into a multiple model form, by avoiding some major drawbacks : the transformation causes no information loss, the choice of the different operating points is no more necessary, the choice of the premise variables is realized in a more systematic way. Furthermore, the method gives the possibility of choosing between different multiplemodel structures. This degree of freedom will be used to ease the controllability, observ-ability, stability analysis studies. Secondly, the derivation of a singularly perturbed form for a multiple time scale non linear system is proposed, by eliminating some structuralconstraints and by making the identification and the separation of the time-scales independent to the model structure. Thirdly, the robust observer synthesis with respect to perturbations, modeling errors and unknown inputs are presented for state and unknowninput estimation. The difficulty of these studies comes from the fact that the multiple model depends on unmeasurable premise variables, this case being not intensively studied, whereas it results naturally from the method of transformation nonlinear system - multiple model. Afterward, fault diagnosis is performed using banks of observer to generate andstructure residual signals. Finally, this works are applied to a model of wastewater treatment plant, Activated Sludge Model No.1 (ASM1) that is largely used in the concerned fiel
Artur, Adriana Guirado. "Adubações com nitrogênio e enxofre: frações no solo, características estruturais, nutricionais, produtivas e uso da água pelo capim-marandu." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-08022011-092953/.
Full textNitrogen and sulphur balanced fertilization may change mineral nutrition and yield of forage grasses. Based on the supply of combinations of nitrogen and sulphur rates, the objectives were to evaluate the effects: a) in these nutrient fractions in the soil and to correlate this fractions with nitrogen and sulphur content in Brachiaria brizantha; b) the combination of nitrogen rates with sulphur rates on the root growth characteristics, in nitrogen and sulphur, total concentration and inorganic forms and N:S ratio in roots of the forage grass; c) on water consumption and efficient use by Marandu palisadegrass; d) on structural characteristics, aboveground forage yield and nutrient content in the grass and e) on nutritional diagnosis of these nutrients in the forage, trying to obtain the critical levels of these nutrients. Two experiments were carried out at the same time under greenhouse conditions, one with and one without the Marandu palisadegrass from September to December 2008, and the soil was an Entisol. Five nitrogen rates (0; 100; 200; 300 and 400 mg dm-3) were combined with five sulphur rates (0; 10; 20; 30 and 40 mg dm-3) in fractionated 52 factorial, with four replications. In the experiment without plants, the nitrogen and sulphur fertilization changed these nutrients fractions in the soil. Nitrogen fertilization increased inorganic fractions of nitrate and ammonium, hydrolyzable total nitrogen, hydrolyzable ammonium, amino sugars and unidentified nitrogen. Application of sulphur rates increased estersulphur and residual sulphur in the soil. In the experiment with plants, supply of both nitrogen and sulphur increased root dry matter production, total sulphur, nitrate and sulphate-sulphur concentrations, while for total root length and root surface area, total nitrogen and ammonium concentrations and N:S only ratio nitrogen rates had significant responses. Nitrogen and sulphur rates increased the water consumption and efficiency of use by grass. Numbers of leaves, number of tillers, leaf area, shoot dry masss and nitrogen content in the shoots of forage grass showed significant responses to nitrogen fertilization in the first growth period but it was necessary to add sulphur in the fertilization to maximize these variables for following two growth period of the grass. Only nitrogen fertilization was significant in the first growth period, while the combinations of nitrogen and sulphur rates were significant for the SPAD value, concentrations of nitrogen and sulphur and N:S ratio in diagnostic leaves of the grass. Significant correlation was observed for nitrogen concentration in diagnostic leaves and SPAD value the three growth periods. Sulphur demand by Marandu palissadegrass was low in the first growth period, but the nitrogen fertilization benefits were maximized by adding sulphur in the fertilization of this grass.
Dipp, Cristiane Conterno. "Caracterização fisio-molecular de cultivares de feijão (Phaseolus vulgaris L.) em resposta à deficiência hídrica." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1782.
Full textThe identification of genotypes for drought tolerance has a great importance in breeding programs. The aim of this study was to characterize genotypes of beans in response to drought tolerance in different reproductive stages through physiologic, agronomic and molecular analysis. The experiment was conducted in greenhouse, using a randomized block design with four replicates; 10 cultivars: ANFC 9, ANFP 110, BRS Esplendor, BRSMG Realce, IPR Siriri, IPR Tangará, IPR Tuiuiu, IPR Uirapuru, IAC Imperador and IAC Milênio under two conditions of irrigation: plants irrigated during their entire life cycle, and plants under irrigation suppression in the reproductive stage (R7) until 16% of field capacity, when the irrigation was restored. In the last four days of stress, the gas exchanges were analyzed, and in the last day of stress was analyzed the percentage of closed stomata in the abaxial surface of the leaves, collected in different times of the day (9h, 12h, 15h and 18h). Additionally, plant samples were collected for the following analysis: fresh and dry mass of leaves, stems and legumes, and proline content in leaves and roots. The plants were harvested at the physiological maturity and the yield components and grain yield were determined. In addition, in order to identify polymorphisms in the sequences of promoters and genes related to drought, seven pairs of primers were tested on the group of genotypes. The drought susceptibility indexes (ISS) ranged from 0.65 to 1.10 in the group of genotypes, which the lowest values observed were for IAC Imperador (0.65) and BRS Esplendor (0.87), indicating the ability of these two genotypes to maintain grain yield under water stress condition. All genotypes showed reduction in yield components under water stress. IAC Imperador (43.4%) and BRS Esplendor (60.6%) had the lowest reductions in productivity and kept about 50% of the stomata closed during all the different times evaluated at last day of irrigation suppression. IAC Imperador showed greater water use efficiency and CO2 assimilation rate under drought stress. IPR Tuiuiú, IPR Tangará and IAC Imperador had the highest proline concentrations in the roots. Under water stress condition, there was a strong positive correlation (0.696) between the percentage of stomata closed with the number of grains per plant (0.696) and the fresh mass of leaves (0.731), the maximum percentage of stomata closed 73.71% in water stress. The accumulation of proline in the root was the character that most contributed to the divergence between the genotypes under water deficit, but not always the genotypes that have accumulated more proline were the most tolerant. The polymorphisms in DNA of coding and promoting sequences of transcription factors studied in this experiment did not discriminate tolerant genotypes from the sensitive ones to water stress.
Goumas, Dimitrios. "Possibilites de detection d'erwinia chrysanthemi pv. Dianthicola (hellmers) dickey 1979-agent de la bacteriose du dahlia sp. Evaluation des methodes immunoenzymatiques pour le controle sanitaire du materiel de propagation." Paris 6, 1987. http://www.theses.fr/1987PA066405.
Full textYu, Peng Ph D. Massachusetts Institute of Technology Department of Aeronautics and Astronautics. "Collaborative diagnosis of over-subscribed temporal plans." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108926.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 193-197).
Over-subscription, that is, being assigned too many tasks or requirements that are too demanding, is commonly encountered in temporal planning problems. As human beings, we often want to do more than we can, ask for things that may not be available, while underestimating how long it takes to perform each task. It is often difficult for us to detect the causes of failure in such situations and then find resolutions that are effective. We can greatly benefit from tools that assist us by looking out for these plan failures, by identifying their root causes, and by proposing preferred resolutions to these failures that lead to feasible plans. In recent literature, several approaches have been developed to resolve such oversubscribed problems, which are often framed as over-constrained scheduling, configuration design or optimal planning problems. Most of them take an all-or-nothing approach, in which over-subscription is resolved through suspending constraints or dropping goals. While helpful, in real-world scenarios, we often want to preserve our plan goals as much possible. As human beings, we know that slightly weakening the requirements of a travel plan, or replacing one of its destinations with an alternative one is often sufficient to resolve an over-subscription problem, no matter if the requirement being weakened is the duration of a deep-sea survey being planned for, or the restaurant cuisine for a dinner date. The goal of this thesis is to develop domain independent relaxation algorithms that perform this type of slight weakening of constraints, which we will formalize as continuous relaxation, and to embody them in a computational aid, Uhura, that performs tasks akin to an experienced travel agent or ocean scientists. In over-subscribed situations, Uhura helps us diagnose the causes of failure, suggests alternative plans, and collaborates with us in order to resolve conflicting requirements in the most preferred way. Most importantly, the algorithms underlying Uhura supports the weakening, instead of suspending, of constraints and variable domains in a temporally flexible plan. The contribution of this thesis is two-fold. First, we developed an algorithmic framework, called Best-first Conflict-Directed Relaxation (BCDR), for performing plan relaxation. Second, we use the BCDR framework to perform relaxation for several different families of plan representations involving different types of constraints. These include temporal constraints, chance constraints and variable domain constraints, and we incorporate several specialized conflict detection and resolution algorithms in support of the continuous weakening of them. The key idea behind BCDR's approach to continuous relaxation is to generalize the concepts of discrete conflicts and relaxations, first introduced by the model-based diagnosis community, to hybrid conflicts and relaxations, which denote minimal inconsistencies and minimal relaxations to both discrete and continuous relaxable constraints. In addition, we present the design and implementation of Uhura, the integrated plan advisory system that incorporates BCDR for resolving over-subscribed temporal plans. Uhura can efficiently produce a relaxed plan for the user to support multiple, interrelated constraints and activities. We have applied Uhura to different types of plans to illustrate the practical generality of our approach, which includes deepsea exploration, job-shop scheduling and transit system management. Results from the computational experiments we performed also show that BCDR is one to two orders of magnitude faster than existing algorithms that build on state-of-the-art numerical solvers, making it an effective approach for many large-scale plans in the aforementioned domains.
by Peng Yu.
Ph. D.
Carvalho, Paulo Augusto Leal de. "Estudo cefalométrico radiográfico da relação entre os tipos faciais, a inclinação do plano oclusal e a discrepância sagital maxilo-mandibular em indivíduos com oclusão normal." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/23/23151/tde-19022015-151949/.
Full textObjective: evaluate the relation between the facialtype and the inclination of the occlusal plane and ANB angle in individuals with normal occlusion.Material and Methods: the sample was composed of 98 radiographs, in lateral norm, of 98 individuals (47 men, 51 women), with an average age of 15.2 years (standard deviation of 1.4 years), normal occlusion and harmonic profile.The radiographs were digitalized in a 1:1 scale and the software Nemoceph (Nemotec® - Spain) was used for the cephalometric analysis, which included Rickettsfive variables thatdetermine the facial type, the saggital relation (SNA, SNB, ANB, N.S.Ba, SN.Go-Me, ANB individualized, AP-BP and Wits) and theinclination of the occlusal plane (OPL.S-N, OPL.PF, OPL.PP, OPL.XiPmand OPL.PM). The data was analyzed statistically with a significance level of 5%.Results: the composition of the sample by facial type was: 11% dolichofacial, 39% mesofacial e 50% braquifacial. The averagevalues and 95% confidence interval of the variables that measured the inclination of the occlusal plane, for the dolichofacial, mesofacial and braquifacialgroups were,respectively: OPL.SN: 21.7° (± 2.14°), 17.0° (± 1.10°) and 15.1° (± 1.43°); OPL.PF: 13.5° (±1.77)°, 10° (SD 1.01°) and 8.1° (± 1.25°); OPL.PP: 12.2° (± 1.99°), 9.1° (± 1.31°) and 8.1° (± 1.21°); OPL.Xi-Pm: 20.5° (± 1.76°), 19.2° (± 0.96°) and 16.4° (± 1.12°); OPL.PM: 17.5° (± 2.02°), 15.3° (± 1.27°) and 12.1° (± 1.19°). The average values and 95% confidence interval of the variables that measure the maxilar-mandibular saggital relation were respectively: ANB: 3.8° (± 0.98°), 2.5° (± 0.62°) and1.3° (± 0.53°);distance AP-BP: 7.3mm (± 2.19mm), 3.4mm (± 0.94mm)and 1.9mm (± 0.78mm); ANB Individualized: 4,7° (± 0.70°), 4.4° (± 0.43°) and 3.7° (± 0.39°); Wits: 1.8mm (± 1.27mm), -2.4mm (± 0.83mm)and -3.5mm (± 0.92mm). Conclusion: Both variables that measure the inclination of the occlusal plane and the variables that measure the ANB and AP-BP maxillomandibularsaggital relation have different characteristics according to the facial type, being observed a decrease in values from the dolichofacial type to the brachifacial type.
Giraud, Denis. "Diagnostic des systèmes industriels complexes par agrégation de méthodes : application à une station d'épuration." Nancy 1, 1998. http://www.theses.fr/1998NAN10002.
Full textPalowitch, Bernard L. (Bernard Louis). "Fault diagnosis of process plants using causal models." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14666.
Full textJenssen, A. C. "Algorithms for change detection and diagnosis in dynamic plants." Thesis, University of Manchester, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488380.
Full textAljafer, Naofel. "Improvement of phytoplasma diagnostic techniques." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/38725/.
Full textOLDEN, JULIE, Pete Nielsen, Nicole Schechter, and Patrick Ackerman. "IMAGING DIAGNOSTIC LABORATORIES: BUSINESS PLAN." Thesis, The University of Arizona, 2008. http://hdl.handle.net/10150/190714.
Full textRuiz, Diego. "Fault diagnosis in chemical plants integrated to the information system." Doctoral thesis, Universitat Politècnica de Catalunya, 2001. http://hdl.handle.net/10803/6420.
Full textEl sistema de diagnosis de fallos que se presenta consiste en una combinación de un sistema de reconocimiento de patrones basado en redes neuronales artificiales y un sistema de inferencia basado en la lógica difusa. La información necesaria para desarrollar el sistema de diagnosis incluye los datos históricos, un análisis de riesgo y operabilidad y un modelo de la planta química. La entrada al sistema son las mediciones directas o indirectas de la planta y la salida consiste en una señal para cada fallo (0: no fallo; 1: fallo). Primero se definen los fallos posibles. La red neuronal se entrena con datos históricos de fallos ocurridos en el pasado, con el objeto de reconocer los patrones respectivos. En el caso de que no se posean los datos históricos de alguno de los fallos, por ejemplo porque nunca hayan ocurrido, se obtienen los patrones mediante la simulación, usando el modelo de la planta. El sistema de lógica difusa contiene un conjunto de reglas si-entonces que pueden ser de dos tipos: las basadas en el conocimiento de la planta, mediante el análisis de riesgo o la experiencia con la simulación, y las basadas en la experiencia con el uso de la red neuronal, previamente entrenada. Otro aspecto novedoso es la posibilidad de entrenar la red neuronal con "características" extraídas de las variables medidas mediante su pre-procesamiento con wavelets. Esta variante permite obtener un alto rendimiento del sistema de diagnosis en plantas químicas discontinuas y continuas complejas. Para optimizar los parámetros de los componentes del sistema de diagnosis se propone un índice de rendimiento. Además, se utiliza el índice de rendimiento para comparar el sistema propuesto con otros métodos.
Las señales dadas por el sistema de diagnosis pueden ser usadas por el sistema de programación de la producción para actualizar el plan de la manera más efectiva, por el sistema de control para actuar en forma automática y por los operadores de planta como soporte para la toma de decisiones. Se han sentado las bases para la traducción de la salida del sistema de diagnosis para su utilización por los demás niveles del soporte informático. Se usa una estrategia basada en el análisis de riesgo y operabilidad de la planta.
El sistema propuesto es consecuencia de sucesivas mejoras, al trabajar con diferentes casos de estudio. Los escenarios académicos corresponden a una planta química continua con una corriente de reciclo y un reactor discontinuo. Los casos a escala de planta piloto corresponden a escenarios construidos en la UPC: un reactor de gasificación, un reactor semicontinuo y una planta discontinua multipropósito. Los escenarios industriales corresponden a dos refinerías de azúcar y a un sector de una planta petroquímica.
El sistema propuesto muestra ser ventajoso respecto a otros métodos tanto en cuanto a la rapidez de diagnosis como en cuanto a su capacidad para aislar los fallos. La simplicidad del desarrollo y la flexible estrategia de implementación del sistema propuesto auguran un futuro promisorio a la tecnología presentada. Nuevas líneas de investigación se pueden emprender mediante el desarrollo de un sistema de gestión de las alarmas. Otro aspecto importante es la posibilidad de participar en la estandarización de las interfaces del programa de diagnosis.
The pretended contribution of this thesis deals with the implementation of a fault diagnosis system in chemical plants integrated to the monitoring, management and control system. The proposed fault diagnosis system consists in a combination of a pattern recognition approach based on artificial neural networks and an inference system based on fuzzy logic. The information needed to develop the fault diagnosis system includes the historical data, the hazard and operability study and the model of the chemical plant. The inputs to the system are the direct or indirect measurements from the plant and the output consists in a signal for each fault (0: no fault; 1: fault). First, the possible faults are defined. The artificial neural network is trained with historical data of faults occurred in the past, with the aim of recognising the respective patterns. In the case that the corresponding historical data are not available, for example due to the no occurrence of the fault, the patterns are obtained through simulation, using the plant model. The fuzzy logic system contains a set of if-then rules that can be of two types: those based in the process knowledge, by the hazard analysis or by the experience with simulation, and those based on the experience with the use of an artificial neural network, previously trained. Other novel aspect is the possibility of artificial neural network training by using signals features that are extracted by its pre-processing using wavelets. This alternative allows a higher fault diagnosis system performance in batch and complex continuous chemical plants. In order to optimise the parameters of the components of the fault diagnosis system, a performance index is proposed. The performance index is also utilised to compare the proposed fault diagnosis system against other methods.
The signals provided by the fault diagnosis system can be used by the scheduling system to update the schedule in the most effective way, by the control system to take automated control actions and by plant's operators as support for decision-making. The basis of the translation of the system output, for its utilisation at other levels in the information system, has been settled.
The proposed strategy is based on the hazard and operability analysis.
The proposed system is the result of successive improvements, by working with different case studies. The academic scenarios correspond to a continuous chemical plant with a recycle stream and a batch reactor. The pilot plant scale cases correspond to scenarios built at UPC: a reactor gasifier, a fed-batch reactor and a multipurpose batch chemical plant. The industrial scenarios correspond to two sugar refineries and a sector of a petrochemical plant.
The proposed system shows to be advantageous with respect to other methods in relation to the fastness of the diagnosis and also its capacity to isolate faults. The simplicity of the development and the flexible strategy of implementation of the proposed fault diagnosis system give a promising future to the presented technology. New research lines can be considered by developing the alarm handling system. Other important aspect is the possibility of the participation in the standardisation of the interfaces of the fault diagnosis program.
Al-Jaf, Bryar Salar Kamal. "Development of improved methods for phytoplasma diagnostics." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43654/.
Full textVolossiouk, Tatiana. "Development of PCR-mediated diagnostics for soil-borne plant pathogens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24516.pdf.
Full textTorres-Rojas, Esperanza. "Expression of diagnostic and therapeutic antibodies in crop plant systems." Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365010.
Full textBousrih, Sami. "Diagnostic spectroscopique des plasmas à symétrie plane." Toulouse 3, 1995. http://www.theses.fr/1995TOU30225.
Full textAmadi-Echendu, Joe E. "Identification of process plant signatures using flow measurement signals for sensor validation, condition monitoring, and plant diagnostics." Thesis, University of Sussex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385674.
Full textFinch, Francis Eric. "Automated fault diagnosis of chemical process plants using model-based reasoning." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14194.
Full textScience hard copy bound in 2 v.
Includes bibliographical references (leaves 300-307).
by Francis Eric Finch.
Ph.D.
Howell, John. "Model-based fault diagnosis in information poor processes." Thesis, University of Glasgow, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295670.
Full textDias, Ana Carina. "Diagnóstico de necessidades de formação em contexto organizacional." Master's thesis, Universidade de Évora, 2015. http://hdl.handle.net/10174/16898.
Full textTan, Matthew. "Molecular approaches to diagnostics for plant parasitic nematodes of biosecurity concern." Thesis, Tan, Matthew (2012) Molecular approaches to diagnostics for plant parasitic nematodes of biosecurity concern. PhD thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/15485/.
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