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Статті в журналах з теми "Pseudosec"
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O'Callaghan, Paul D. "Pseudosex in Pseudotheology." Christian bioethics: Non-Ecumenical Studies in Medical Morality 4, no. 1 (April 1, 1998): 83–99. http://dx.doi.org/10.1093/chbi.4.1.83.6912.
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O'Callaghan, P. D. "Pseudosex in Pseudotheology." Christian Bioethics 4, no. 1 (January 1, 1998): 83–99. http://dx.doi.org/10.1076/chbi.4.1.83.6912.
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K, Buvaneshwari, Sashidevi G, Hemalatha G, and Arunkumar A. "Effect of Storage Conditions on Quality and Shelf Life of Minimally Processed Precut Banana Pseudostem." Madras Agricultural Journal 108, March (2021): 1–4. http://dx.doi.org/10.29321/maj.10.000479.
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Minimal processing techniques should provide the market with fresh- like appearance. Fresh-cut vegetables are consumed widely and it is a healthy, nutritional and convenient option. The present study aimed to standardize and develop the minimally processed precut pseudostem. Two banana varieties were selected viz., ottuvazhai (syn Mupaddai) (V1), vayalvazhai (V2) for developing minimally processed product.To prevent browning, different pretreatments such as lemon juice, turmeric powder, curd, salt, water, citric acid, and vinegar were used at 1 to 5 % concentration. Two different packaging materials, viz., aluminum foil (P1) and low-density polypropylene (P2) were used.The chemical composition of banana pseudostem was analyzed. The moisture, browning index, color value and microbial study of the precut pseudostem were analyzed using standard procedures. The quality of minimally processed precut pseudostem was evaluated from the initial day to 9 days at ambient and refrigerated storage conditions. Among the pretreatments, citric acid pretreated precut pseudostem had an effective role against browning reaction.During storage conditions, a minimum changes were observed in Mupaddai variety (V1) precut pseudostem sample. At refrigerated condition, the minimally processed product (V1) from aluminum foil was good upto 9 days of storage condition.
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Ramadhan, F. K., Rukmiasih, and R. Afnan. "Penggunaan Ekstrak Pelepah Pisang Ambon sebagai Sanitizer Kerabang terhadap Daya Tetas Telur Itik Lokal." Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan 7, no. 3 (October 31, 2019): 88–95. http://dx.doi.org/10.29244/jipthp.7.3.88-95.
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The use of KMnO4 and formalin 40% for fumigation of hatching machine and hatching eggs has potential hazards to safety and health. Some previous studies have shown that banana pseudostem extract can act as an antimicrobial. This study aimed to examine the use of ambon banana pseudostem extract (Musa paradisiaca var. Sapientum) with concentrations of 10%, 20%, and 30% as eggshell sanitizer to the hatchability of local duck eggs. The results showed eggs hatchability that use of 10% banana pseudostem extract still lower than eggs hatchability that use fumigation. The higher concentration of banana pseudostem extract can reduce the hatchability. Therefore, it is necessary to try experiment use banana peseudostem extract with concentration lower than 10%.
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Danso, Humphrey. "Influence of Plantain Pseudostem Fibres and Lime on the Properties of Cement Mortar." Advances in Materials Science and Engineering 2020 (September 9, 2020): 1–9. http://dx.doi.org/10.1155/2020/4698603.
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This study investigated the properties of cement mortar with lime reinforced with plantain pseudostem fibres. Experimental specimens with 0, 0.25, 0.5, 0.75, and 1% fibre contents by weight of sand and 10% lime content by weight of cement were prepared and tested on 7, 14, 21, and 28 days of curing for density, tensile strength, compressive strength, SEM, and EDS. The 0.25% plantain pseudostem fibre reinforced mortar achieved 23.4% compressive strength improvement over unreinforced mortar specimens. There was between 6.89 and 13.80% increase in tensile strength of the plantain pseudostem fibre reinforced mortar over the unreinforced mortar specimens. A positive linear correlation was found between the compressive strength and tensile strength of cement mortar reinforced with plantain pseudostem fibres and lime with coefficient of determinant (R2) values between 0.909 and 0.869. It was also observed that the plantain pseudostem fibre reinforced mortar specimen had some microcracks and voids from the SEM analysis. Furthermore, EDS analysis showed the presence of calcium silicate hydrate with a Ca/Si ratio of between 1.02 and 2.49, and Al/Si ratio of between 0.76 and 0.81 as the main oxide. It therefore concluded that the incorporation of plantain pseudostem fibre and lime positively influenced the properties of the cement mortar with the 0.25% fibre content being recommended for construction application.
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Xiao, Rong F., Yu-Jing Zhu, Yan-Dan Li, and Bo Liu. "Studies on Vascular Infection of Fusarium oxysporum f. sp. cubense Race 4 in Banana by Field Survey and Green Fluorescent Protein Reporter." International Journal of Phytopathology 2, no. 1 (April 15, 2013): 44–51. http://dx.doi.org/10.33687/phytopath.002.01.0064.
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Fusarium wilt of banana (Musa spp.) caused by Fusarium oxysporum f. sp. cubense (Foc) is one of the most serious banana fungal diseases in the world. Understanding the infection process of Foc is important for development of effective ways in disease control. In order to follow infection and colonization of this pathogen from root to rhizome and pseudostem tissues of banana, a highly pathogenic strain FJAT-3076 of Foc race 4 (Foc4) was transformed with gene encoding green fluorescent protein (GFP) and the fungus carrying gfp (FJAT-3076-GFP) was used to inoculate banana plants (Cavendish cv. B.F.). After inoculation for 3 to 10 d, it was observed that the conidia and their germ-tubes had penetrated into epidermis of young roots. The hyphae were found inside the root xylem 10 d after inoculation in the rhizome and pseudostem xylem after inoculation for 17 d. All plants infected by Foc died in 24 d after inoculation. It was also observed that Foc had spread all over the xylem and part of hyphae reached the pseudostem surface. Hyphal population was found the highest in the pseudostem, lower in root and least in rhizome. Field survey confirmed that Foc4 were mostly present in the base of pseudostem and less in the rhizome. Thus, effective prevention of the Foc hyphae movement from the rhizome up to the pseudostem might delay or control banana wilt disease.
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Balakrishnan, S., GLD Wickramasinghe, and UG Samudrika Wijayapala. "Investigation on improving banana fiber fineness for textile application." Textile Research Journal 89, no. 21-22 (March 9, 2019): 4398–409. http://dx.doi.org/10.1177/0040517519835758.
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The banana is one of the most commonly consumed fruits in Sri Lanka; after the fruit is harvested, the pseudostem is thrown down as waste. The banana pseudostem is a good source of natural fiber. The purpose of this project is to investigate the effects of banana fiber extraction, examine treatment parameters on fiber fineness and establish suitable methods to reduce the fineness that enable banana fibers to be used as textile materials. Ten popular Sri Lankan varieties of banana pseudostem were selected for this study. From the mechanically extracted banana fiber of these 10 varieties, Ambun (genome AAA) was selected for further analysis because it had the lowest fiber fineness. Four layers from the pseudostem of Ambun were extracted and put through a fineness and single fiber strength test. Scanning electron microscopy and fiber linear density were used to observe and determine the fineness of the enzyme and chemical treated banana fiber. The mechanical strength of the treated banana fibers was obtained by using a universal tensile tester machine. The test result showed the second and the third layers of the pseudostem to be the finest. The mechanically extracted fiber of the second and third layers of the pseudostem were put through an enzyme and chemical treatment. Results showed enzyme and chemical combined treated fibers to be the finest, with a reduced diameter from 168.4 µm to 48.8 µm, which is about 71% reduction compared to mechanical extraction.
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S, Chang, Li J, Sun W, Lin F, and Xu B. "A method to rescue the polluted explant in banana (Musa spp) tissue culture." South Asian Journal of Experimental Biology 2, no. 4 (September 2, 2012): 157–61. http://dx.doi.org/10.38150/sajeb.2(4).p157-161.
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Plant tissue culture is an important commercial tool in banana production. Sterilization is the first key step in plant tissue culture. When explants were found infected, they were always discarded. But if the materials were precious and rare, once they were cast away, it will be very difficult to get them again. No paper has been found to resolve this problem. In this paper, two precious banana plantlets were polluted during the process of tissue culture. The leaves and the stem were cut from the polluted seedlings. Only the pseudostem was left. The black and brown part of the pseudostem were also cut and discarded. The modified pseudostem was soaked in 6% NaClO solution 10 minutes first, and then, it was kept in 70% ethanol for 1.5 minutes. After that, the pseudostem was cultured on MS basal medium supplemented with sucrose, 7 g Lâ€1 agar and 3 mg/L 6â€Benzylaminopurine (6â€BA). Most of the explants grow healthily during the following time.
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Sharma, Sonia, and Prof Neeraj Wadhwa. "Microbial Retting of Banana Pseudostem." International Journal of Engineering and Advanced Technology 11, no. 1 (October 30, 2021): 162–66. http://dx.doi.org/10.35940/ijeat.a3195.1011121.
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Fibrous wastes correspond to approximately 54.3 wt.-% of a banana plant. The waste weight is mainly of bunches, stems, and leaves. These ligno-cellulosic fibre waste can be designed and tailored to yield value added products which can be exploited by the farmers, exporters and weavers. Pectin (plant cement) and hemicelluloses (22-25%) found in plant cell walls in the plate (middle lamella). These macromolecules have needs to be hydrolyzed faster without affecting the quality of fibre. The chemical and mechanical processes adopted for fibres actually affect color uptake, strength of fibre thus fetching lower price. We report a biological ecofriendly method of retting where pectinases produced by the endophytic microorganisms of banana pseudostem were used to separate the fibre bundles of cellulose.. Endophytes are microorganisms which live in close relationship with living plant tissues in a cooperative relationship delivering a few auxiliary metabolites and proteins with the possibility to hydrolyse a few plant-determined macromolecules of the host. They spend the entire or part of their lifecycle colonizing within sound tissues of the host plants.The endophytic pectinase helps to break down the cell walls and can find commercial application in extraction of fibres.Seven bacterial isolates were screened and isolated in pectinase screening agar medium [PSAM]. Pectinase producing endophytic bacteria is isolated from corm of Amorphophallus paeoniifolius reported by us are Staphylococcus sciuri, Exiguobacterium acetylicum, Exiguobacterium indicum which are good pectinase producers having specific activity of 8.26, 12.61, 6.81 respectively. Treatment of banana pseudostem with these microbes showed 91%, 94%, 96.7% loss in the total weight of stem leaving behind pure cellulose fibres.
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Silveira Junior, José Assunção, Márcio dos Santos Pedreira, Christian Albert Carvalho da Cruz, Cristiane Leal dos Santos-Cruz, Cláudio Eduardo Silva Freitas, Alana Alves de Oliveira, Maxwelder Santos Soares, and Henrique Almeida da Silva. "Carcass traits of sheep fed banana pseudostem hay." Semina: Ciências Agrárias 40, no. 6 (August 29, 2019): 2795. http://dx.doi.org/10.5433/1679-0359.2019v40n6p2795.
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The objective of this study was to evaluate carcass yield, measurements, cuts, and fat deposition of sheep fed banana pseudostem hay and Tifton 85 grass hay, with or without virginiamycin. Thirty-three uncastrated male Dorper × Santa Ines crossbred lambs at five months of age, with an average body weight of 25.00 ± 1.95 kg, were used in a feedlot experiment. The following four diets were evaluated: Tifton 85 grass hay plus concentrate with virginiamycin, banana pseudostem hay replacing 60% of Tifton 85 grass hay plus concentrate with virginiamycin, Tifton 85 grass hay plus concentrate without virginiamycin, and banana pseudostem hay replacing 60% of Tifton 85 grass hay plus concentrate without virginiamycin. The experiment was set in a completely randomized design, in a factorial scheme, using orthogonal contrasts. The diet replacing 60% Tifton 85 grass hay by banana pseudostem hay without virginiamycin had no effect on carcass traits. The combination of virginiamycin and Tifton 85 grass hay provided increases in warm carcass weight, warm carcass yield, spine, omental and mesenteric fat deposition, and, regardless of roughage, increases in the thoracic perimeter.
Дисертації з теми "Pseudosec"
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McManus, Valerie C. "The biology of the eastern pygmy blue butterfly, Brephidium pseudofea (Lepidoptera: Lycaenidae) physiological adaptations to an intertidal environment /." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024617.
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Pereira, Andrà LuÃs Sousa. "NanocompÃsitos baseados em PVOH e nanocristais de celulose obtida de pseudocaule de bananeira." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10365.
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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgicoCoordenaÃÃo de AperfeiÃoamento de NÃvel Superior
A utilizaÃÃo de materiais polimÃricos oriundos do petrÃleo na fabricaÃÃo de produtos de difÃcil decomposiÃÃo leva a estudos e desenvolvimento de materiais parcialmente ou completamente biodegradÃveis e de fontes renovÃveis. A celulose à um grande alvo destas pesquisas, nÃo somente por suas diversas fontes, mas tambÃm pela vasta aplicabilidade, principalmente em nanocompÃsitos. O Brasil, um paÃs do agronegÃcio, possui uma grande fonte de biomassa proveniente dos resÃduos do setor agroindustrial. Uma dessas fontes à a fibra do pseudocaule da bananeira, que à utilizada como adubo e cobertura de solo no prÃprio bananeiral. Tendo a grande geraÃÃo de resÃduos no bananeiral como oportunidade, o desenvolvimento de novas alternativas de aproveitamento amplia as opÃÃes de agregaÃÃo de valor e contribui para reduzir os seus impactos negativos. No presente trabalho, fibras do pseudocaule da bananeira (PCB), variedade Pacovan, foram avaliadas como possÃvel fonte para obtenÃÃo de nanocelulose para elaboraÃÃo de nanocompÃsitos em matriz de poli(Ãlcool vinÃlico) (PVOH), um polÃmero hidrofÃlico e biodegradÃvel. Inicialmente, o PCB foi dividido em quatro fraÃÃes: fraÃÃo externa, central, interna e nÃcleo para posterior caracterizaÃÃo quÃmica, tÃrmica e morfolÃgica. Em razÃo do maior conteÃdo de celulose e cristalinidade, utilizaram-se as fraÃÃes externas como matÃria-prima para a obtenÃÃo de nanocelulose. ApÃs branqueamento em meio alcalino, a fibra foi submetida à hidrÃlise Ãcida (H2SO4 62% m/m, 70 min, 45 ÂC) para obtenÃÃo dos nanocristais de celulose. A nanocelulose obtida do PCB apresentou-se como uma suspensÃo estÃvel de coloraÃÃo marrom. Tipicamente, os nanocristais apresentaram comprimentos (L) de 135,0 nm e diÃmetros (d) situados em torno de 7,2 nm; o que reproduziu razÃes de aspecto (L/d) de 21,2. A nanocelulose foi aplicada em uma matriz polimÃrica biodegradÃvel e solÃvel em Ãgua, o poli(Ãlcool vinÃlico), para obtenÃÃo de filmes nanocompÃsitos de diferentes concentraÃÃes (0, 1, 3 e 5% em base seca de matriz). A adiÃÃo de nanocelulose melhorou as propriedades mecÃnicas dos filmes atà a concentraÃÃo de 3%, diminuiu as propriedades tÃrmicas em todas as concentraÃÃes, melhorou a propriedade de barreira ao vapor de Ãgua gradualmente, com pequenas mudanÃas nas propriedades Ãpticas evidenciando uma oportunidade de aplicaÃÃo desse filme nanocompÃsito para embalagem. AlÃm disso, representando uma alternativa de agregaÃÃo de valor a um relevante resÃduo do agronegÃcio.
The use of polymeric materials from petroleum in the manufacture of difficult decomposition products leads to studies and development of partially or completely biodegradable materials from renewable sources. Cellulose is a major target of this research, not only for its various sources, but also by the wide applicability, especially in nanocomposites. Brazil, a country of agribusiness, has a large source of waste biomass from the agribusiness sector. One such source is the fiber from the banana pseudostem , which is used as fertilizer and soil cover in bananeiral own. Having a big residue generation in banana crop as an opportunity, the development of new alternative utilization expands the options of adding value and helps to reduce the negative impacts. In the present work, fibers from the banana pseudostem (PCB), Pacovan variety, were evaluated as a possible source for obtaining nanocelulose for preparation of nanocomposites in matrix of polyvinyl alcohol (PVOH), a hydrophilic and biodegradable polymer. Initially, the PCB was divided into four fractions: external fraction, central fraction, inner fraction and core for subsequent chemical, thermal and morphological characterization. Because of the higher cellulose content and crystallinity, we used the external fractions to obtain nanocelulose. After bleaching in alkaline environment, the pulp was subjected to acid hydrolysis (H2SO4 62% m / m, 70 min, 45 Â C) and reduced to cellulose nanocrystals. The nanocelulose extracted from the PCB appeared as a stable brown suspension . Typically, the crystals exhibited lengths (L) of 135.0 nm, and diameters (d) situated around 7.2 nm, which reproduces aspect ratios (L/d) 21.2. The nanocellulose was applied to a biodegradable polymeric matrix and water-soluble polyvinyl alcohol, to obtain nanocomposite films of different concentrations (0, 1, 3 and 5% on dry basis matrix). The addition of nanocellulose improved the mechanical properties of the films to 3% concentration, diminished the thermal properties at all concentrations, improved barrier property to water vapor gradually with small changes in the optical properties evidencing an opportunity to apply this nanocomposite film for packaging. Moreover, representing an alternative of adding value to a relevant agribusiness residue.
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Rodrigues, Núbia Fernanda Marinho. "ADSORÇÃO DOS CORANTES TÊXTEIS VIOLETA BRILHANTE REMAZOL E TURQUESA REMAZOL PELO PSEUDOCAULE DE BANANEIRA (Musa ssp.)." Universidade Federal do Maranhão, 2011. http://tedebc.ufma.br:8080/jspui/handle/tede/930.
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Previous issue date: 2011-12-06FUNDAÇÃO DE AMPARO À PESQUISA E AO DESENVOLVIMENTO CIENTIFICO E TECNOLÓGICO DO MARANHÃO
In this work was investigated the potential of banana tree pseudostem, an agricultural waste used in natura (BIN) and treated with methanol (BTM), as adsorbents in removal of textile dyes Violet Brilliant Remazol and Turquoise Remazol from aqueous solution. The adsorbents were characterized by infrared spectroscopy, 13C nuclear magnetic resonance, elemental analysis, thermogravimetry and X-ray diffraction. The zero point of charge (pHzpc) the materials were 5.1 (BIN) and 4.3 (BTM). The pH study showed that the maximum amount adsorbed occurred in pH's 1.0 and 2.0. The kinetics was performed at pH 2.0, 25°C and was evaluated at concentrations of 250 and 1000 mg.L-1. The contact times required for both adsorbents reach equilibrium in the two concentrations studied were 120 and 300 minutes for the dyes Violet and Turquoise, respectively. The kinetics sorption data were fitted to pseudo-first order, second order, and intraparticle diffusion models and the equilibrium data were fitted to the Langmuir and the Freundlich isotherm models. Taking into account correlation coefficients, the data were best fitted to the second order kinetic model (R2> 0.999). The intraparticle diffusion model is also involved in the mechanism of adsorption, which showed that the adsorption takes place in three steps. With the exception of Turquoise Remazol by BIN, all other systems were best fitted to Freundlich isotherms. The adsorption isotherms were evaluated at four different temperatures (10, 25, 40 and 55 °C) by varying the concentration of the dye from 100 to 1000 mg.L-1 in the best conditions of pH and equilibrium time. The thermodynamic parameters indicated that the process is endothermic (Turquoise) and exothermic (Violet). The spontaneity of the sorption processes for all dyes was also confirmed by the favorable negative values of Gibbs free energy and by positive entropic data. Desorption of dyes was carried out in alkaline (pH 8.0), being recovered 44% (BIN) and 38% (BTM) for the Violet Brilliant Remazol and 34% (BIN) and 21% (BTM) for the dye Turquoise Remazol. This value suggests the application of this biopolymer as a favorable agent for textile dyes removal from a given system.
Neste trabalho foi investigado o potencial do pseudocaule de bananeira, um resíduo agrícola utilizado in natura (BIN) e tratado com metanol (BTM), como adsorventes na remoção dos corantes têxteis Violeta brilhante remazol e Turquesa remazol de soluções aquosa. Os adsorventes foram caracterizados por espectroscopia no infravermelho, ressonância magnética nuclear de 13C, análise elementar, termogravimetria e difratometria de raios X. O ponto de carga zero (pHzpc) dos materiais foram 5,1 (BIN ) e 4,3 (BTM). O estudo do pH mostrou que a quantidade máxima adsorvida ocorreu nos pH s 1,0 e 2,0. As cinéticas foram realizadas em pH 2,0, temperatura de 25°C e foram avaliados nas concentrações de 250 e 1000 mg.L-1. Os tempos de contato necessários para ambos os adsorventes atingirem o equilíbrio, nas duas concentrações estudadas foram 120 e 300 minutos para os corantes Violeta e Turquesa, respectivamente. Os dados cinético de adsorção foram ajustados aos modelos de pseudo-primeira ordem, segunda ordem e difusão intrapartícula e os dados de equilíbrio foram ajustados aos modelos de isoterma de Langmuir e Freundlich. Levando em consideração os coeficientes de correlação, os dados cinéticos foram melhor ajustados ao modelo de segunda ordem (R2 > 0,999). O modelo de difusão intrapartícula também está envolvido no mecanismo de adsorção, o qual mostrou que a adsorção acontece em três etapas. Com exceção do Turquesa remazol pelo BIN, todos os outros sistemas foram melhor representados pela isoterma de Freundlich. As isotermas de adsorção foram avaliadas em quatro temperaturas diferentes (10, 25, 40 e 55 ºC) variando-se a concentração do corante de 100 a 1000 mg.L-1 nas melhores condições de pH e tempo de equilíbrio. Os parâmetros termodinâmicos indicaram que o processo é endotérmico (Turquesa), exotérmico (Violeta). A espontaneidade dos processos de sorção de todos os corantes também foi confirmada pelos valores negativos da energia livre de Gibbs e pelos dados positivos de entropia. A dessorção dos corantes foi realizada em meio alcalino (pH 8,0), sendo recuperado 44% (BIN) e 38% (BTM) para Violeta brilhante remazol e 34% (BIN) e 21% (BTM) pra o corante Turquesa remazol. Este valor sugere a aplicação deste biopolímero como agente favorável para a remoção de corantes de efluentes têxteis a partir de um determinado sistema.
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Bourgeade, Laetitia. "Inférence des acteurs de la régulation des expressions géniques." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0008/document.
Повний текст джерелаАнотація:
La quantité croissante de données générées est à l’origine de nombreuses problématiques en bioinformatique telles que le développement de nouvelles méthodes de traitement et d’analyse efficaces de ces données. Plus particulièrement, les réseaux de régulation des fonctions cellulaires sont au coeur de nombreux projets aujourd’hui. Il est donc nécessaire, afin d’appréhender correctement ces systèmes de régulation, de comprendre l’origine et de caractériser les acteurs de ces systèmes tels que les ARN et les pseudogènes.Nous avons établi une nouvelle méthode de comparaison d’une séquence ARN requête avec un jeu de séquences ARN cibles. Notre méthode se base sur (i) l’indexation préalable des graines en séquence/structure des ARN du jeu cible, (ii) la recherche des ARN cibles par détection des graines de la séquence requête présentes également dans le jeu de données cible et le chainage de ces graines, puis (iii) la complétion de l’alignement obtenu à l’aide d’un algorithme d’alignement exact incorporant des contraintes d’alignement. Cette méthode a été appliquée sur le jeu de données de BraliBase2.1. L’exactitude des résultats obtenus et l’efficacité de la méthode ont alors été comparés à la méthode d’alignement exact LocARNA et à son filtre basé sur un algorithme de chainage de graines récemment développé, ExpLocP. Notre méthode RNA-unchained permet d’améliorer significativement les temps de calcul de LocARNA et présente des temps de calcul similaires à ExpLocP, tout en améliorant l’exactitude des alignements finaux.De plus, nous avons développé une méthode, PseudOE, de détection et de caractérisation du pseudome au sein d’un génome et d’analyse comparative de ce pseudome entre plusieurs génomes. Cette méthode a ainsi permis de réaliser l’analyse du panpseudome de deux souches relativement distantes de l’espèce Oenococcus oeni et qui présentent des propriétés oenologiques opposées. On observe dans ces génomes compacts, de 1,8Mb, 8,5% de pseudogènes. Par comparaison aux autres génomes bactériens, les génomes d’O. oeni semblent sensibles à la pseudogénisation. La majorité des pseudogènes détectés ont pour origine des mutations de leur séquence et sont présents uniquement dans l’un des génomes, ce qui soutient l’hypothèse d’une origine récente de ces séquences et qui illustre la tendance des O. oeni à l’hypermutabilité. De plus, l’analyse des données fournies par PseudOE a permis la mise en évidence d’une organisation spatiale des pseudogènes au sein de territoires spécifiques du chromosome. L’ensemble de ces analyses illustre les particularités des pseudogènes chez O. oeni et apporte des informations supplémentaires concernant l’évolution des gènes/génomes dont les annotations de génomes pourraient retirer des bénéficesThe increasing amount of available data is a source of many issues in bioinformatics such that the development of new methods of treatments and efficient analysis of data. Especially, regulatory networks are at the heart of many projects. Also, in order to understand regulatory systems, it appears to be necessary to characterize and to understand actors of these systems such as RNA and pseudogenes. We develop a new method to compare a query RNA with a static set of target RNAs. Our method is based on (i) a preliminary indexing of the sequence/structure seeds of the target RNAs, (ii) searching the potentially homolog RNAs by detecting seeds of the query present in targets, chaining these seeds, then (iii) completing the alignment using an anchor-based exact alignment algorithm. We apply our method on the benchmark Bralibase2.1. We compare our method accuracy and efficiency with the exact method LocARNA and its recent seeds-based speed-up ExpLocP. Our pipeline RNA-unchained greatly improves computation time of LocARNA and is comparable to the one of ExpLocP, while improving the overall accuracy of the final alignments.Moreover, we develop a new method, PseudOE, to detect and to characterize the pseudome of one genome, and to analyse by comparison two genomes at least. This method allows to analyse the pan-pseudome of two distantly related Oenococcus oeni strains with opposite oenological properties. Quite interestingly, with 8.5% of pseudogenes for a compact 1.8Mb genome, O. oeni appeared to be prone to pseudogenization compared to other bacteria. A great proportion of pseudogenes were found to come from mutational degradation suggesting a relatively recent origin that could illustrate the natural propensity of O. oeni for hypermutability. In addition, we identify a spatial organization of pseudogenes into dedicated chromosomal territories. These analysis illustrate peculiar properties of O. oeni pseudogenes, providing additional insights of gene/genome evolution from which future genome annotation will benefit
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Martínez, Arias Rosa. "Variación haploide en secuencias nucleares humanas: el pseudogén GBA." Doctoral thesis, Universitat Pompeu Fabra, 2001. http://hdl.handle.net/10803/7069.
Повний текст джерелаАнотація:
Hemos analizado la variabilidad genética de una zona no codificante autosómica, el pseudogén homólogo al gen de la glucocerebrosidasa (psGBA). Parte del análisis se ha realizado desde la perspectiva de la genética de poblaciones humanas.
Desde un punto de vista más genómico hemos establecido la dinámica de la región, a fin de entender las causas del espectro de variación. Hemos analizado el papel de la mutación, recombinación, conversión génica y, especialmente, selección.
Por otra parte, psGBA es importante en la producción de alelos complejos GBA-psGBA, que provocan los tipos más severos de la enfermedad de Gaucher. Mostramos cómo el conocimiento de la variabilidad en psGBA ayuda al reconocimiento de estos alelos complejos.
Finalmente, con los datos de variabilidad de dos regiones parálogas situadas en la misma región cromosómica (gen GBA / pseudogen psGBA) hemos comparado los patrones de mutación que presenta una misma secuencia bajo diferentes presiones selectivas.
We have analyzed the genetic variability in a non-coding autosomal region, the pseudogene homologous to the glucocerebrosidase gene (psGBA).
Part of the analysis has been performed from the human populations point of view.
From a more genomic perspective, we have established the region dynamics in order to understand the causes of the variability pattern. We have analyzed the role of mutation, recombination, gene conversion and, especially, selection.
On the other hand, psGBA is important in the production of complex alleles GBA-psGBA, that lead to the most severe types of Gaucher disease. We show how the knowledge of psGBA variability helps to the identification of those complex alleles.
Last, from the variability data from two paralogous regions located in the same chromosomal region (GBA gene /psGBA pseudogene) we have compared the mutation patterns shown by the same sequence under different selective pressures.
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Baya, Abalo. "Contribution à la génération de vecteurs aléatoires et à la cryptographie." Phd thesis, Grenoble 1, 1990. http://tel.archives-ouvertes.fr/tel-00336536.
Повний текст джерелаАнотація:
Dans le chapitre 1, nous présentons les congruences linéaires simples et les tests de qualité des nombres pseudo-aléatoires (n.p.a.) congruentiels. L'accent est mis sur le test des treillis, le test spectral et le test sériel. Le test sériel est base sur l'estimation de la discrépance des vecteurs de n.p.a. Partant de cette estimation, on introduit une quantité appelée figure de mérite. Celle-ci nous permet de rechercher, pour m et b fixes, des multiplicateurs a tels que deux termes successifs de la suite (a,b,m,x#0) soient statistiquement indépendants. Nous débutons le chapitre 2 par l'étude des longueurs de cycle et du transitoire des suites engendrées par une congruence linéaire multidimensionnelle (c.l.m.). Ensuite, nous décrivons quelques méthodes de transformation de ces suites en suites de n.p.a. Enfin, nous faisons une discussion sur le choix des paramètres d'une c.l.m. Dans le chapitre 3, nous étudions la période d'un générateur vectoriel base sur le modèle de Daykin et une c.l.m. De période maximale, puis nous faisons un aperçu sur les principaux générateurs non linéaires de n.p.a. Le chapitre 4, réservé a la cryptographie, traite du problème du décryptage de l'ordre et du modulo d'une c.l.m
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Benevides, Kristina, Oscar Broström, Kalman Grim Elison, Hugo Swenson, Andrei Vlassov, and Josefin Ågren. "Stabil och antibiotikafri läkemedelsproduktion i rekombinant Escherichia coli." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323719.
Повний текст джерелаАнотація:
Den här rapporten presenterar ett antibiotikafritt, stabilt och kromosombaserat expressionssystem för läkemedelsproduktion i Escherichia coli på beställning av företaget Affibody AB. E. coli-stammen BL21(DE3) valdes som värdorganism för expressionssystemet. Systemet består av en genkassett som innehåller en T7-promotor, en 5′-UTR från genen ompA och en terminatorsekvens från RNA-operonet rrnB. Fyra kopior av genkassetten ska integreras i pseudogenerna caiB, yjjM, hsdS och yjiV. En datormodell som modellerar det egentliga kopietalet i cellerna har skapats i mjukvaran MATLAB, vilket visar att det uppskattas vara maximalt 32 kopior av genkassetten per cell på grund av replikation av kromosomen. Ett högt pH i fermentorn; att använda fed-batch och blandade kolhydratkällor; och att använda stammen BL21(DE3) minskar acetatproduktionen i cellen. En lägre acetatproduktion kan leda till en högre produkthalt. En proteinutbytesmodell för mjukvaran MATLAB har konstruerats för att uppskatta koncentrationen av Affibody®-molekylen i en E. coli cell.
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Brown, D. A. "Palaeoproterozoic eclogites record lithobaric mixing during subduction and exhumation." Thesis, 2018. http://hdl.handle.net/2440/130474.
Повний текст джерелаАнотація:
This item is only available electronically.The interrogation of mineral assemblages that preserve evidence of having reached eclogite-facies conditions provides insight into the thermal state of subduction regimes. One of the first appearances of such assemblages in the geological record is documented in the Palaeoproterozoic Usagaran Belt in central Tanzania, where ca. 2000 Ma relic eclogite-facies assemblages are preserved. The eclogites contained the assemblage garnet + omphacite + rutile + quartz and have subsequently been overprinted by diopside + plagioclase + hornblende + ilmenite ± orthopyroxene. The eclogitic domains are preserved within low-strain domains, and these are encased by comparatively high-strain garnet-kyanite metapelitic gneisses and garnet-bearing mafic gneisses. Mineral equilibria forward modelling indicate that the eclogites reached minimum peak pressures of ca. 15–18 kbar and Zr-in-rutile thermometry applied to armoured rutile in garnet yields peak temperatures of 755–768°C. Peak pressure–temperature (P–T) conditions are consistent with a cool geothermal gradient of 460°C/GPa. The retrograde history of the eclogite facies rocks is characterised by post-peak near-isothermal decompression to granulite facies conditions of 6.5–7 kbar and 800°C. Elevated Zr concentrations in fine-grained rutile and the preservation of prograde compositional zoning in garnet indicates that peak metamorphic conditions and near-isothermal exhumation occurred within ca. 1 Ma. The comparatively high-strain metapelitic domains record lower peak pressures (7.3–8.3 kbar and 683–700°C) than the relic eclogites, indicative of a separate P–T history where the maximum P–T conditions coincide approximately with the post-peak assemblages in the eclogites. In light of the results from mineral equilibria forward modelling, the regional scale association between the relic eclogites and high-strain gneisses is consistent with an exhumation model involving either extrusion or extension, or a combination of both. This model permits the juxtaposition of deeply buried rocks with mid-crustal material.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2018
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Chung, Chih-Hung, and 鍾志鴻. "Study of Banana Pseudostem Sap Battery." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/533h86.
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Legodi, Lesetja Moraba. "Utilization banana pseudostem for production of cellulolytic enzymes and bioethanol." Thesis, 2019. http://hdl.handle.net/10386/3082.
Повний текст джерелаАнотація:
Thesis (Ph. D. (Microbiology)) -- University of Limpopo, 2019In an effort to align the current research with the country’s biofuel strategy, the aim of the study was to utilize banana pseudostem in the production of fungal cellulolytic enzymes and bioethanol through fermentation of the banana pseudostem hydrolysate. The selection of microorganisms was based on the ability of the fungi to grow on agar containing Avicel (microcrystalline cellulose) followed by assaying for cellulases in the form of endoglucanase and total cellulase activity. Ten fungal isolates obtained from screening process showed positive endoglucanase activity on carboxymethyl cellulose – Congo Red agar plate. The six fungal isolates selected based on high cellulase activity belonged to Trichoderma and Aspergillus genera. In submerged fermentation (SmF), the maximum cellulase and endoglucanase production under optimal conditions by all fungal isolates was achieved in media with an initial of pH 6.5 at 30 °C. Under these conditions, the total cellulase activity was 9.79 filter paper units (FPU)/mL and endoglucanase activity 45.2 U/mL for Trichoderma longibrachiatum LMLUL 14-1 and total cellulase activity of 7.7 FPU/mL and endoglucanase activity of 32.7 U/mL for Trichoderma harzianum LMLUL 13-5. These cellulase activities were higher than in the crude enzymes system for all Aspergillus fumigatus. The production conditions for maximum β-glucosidase varied amongst the Aspergillus spp. For example, Aspergillus fumigatus LMLUL 13-4 had produced higher β-glucosidase activity in a medium with an initial pH of 6.5 and at an incubation temperature of 30 °C whereas A. fumigatus LMLUL 13-1 had produced higher β-glucosidase activity at an initial pH of 7.0 and at 35 °C. Solid state fermentation (SSF) to produce cellulase enzymes system was influenced by temperature, nature of the substrate (i.e. moisture, modification) and culturing technique/strategy (i.e. monoculture versus co-culture). Higher cellulase enzymes system was produced under the conditions of 30 °C, 75% moisture content of untreated (native) BPS and pH 6.5. All the fungi investigated, produced thermotolerant and acidophilic cellulase and endoglucanase, whilst β-glucosidase is both acidophilic and alkaliphilic. The cellulase enzymes complex of T. harzianum LMLBP07 13-5 is most stable, followed by A. fumigatus LMLPS 13-4 and the least stable cellulase enzymes complex was for T. longibrachiatum LMLULSA 14-1. For the pretreatment of BPS, the material was first subjected to three different pretreatment conditions; namely alkaline (3% NaOH), acid (5% H2SO4) and hot water (autoclave method) pretreatment to remove lignin and loosen the cellulose structure. After the pretreatments, alkaline method exposed more cellulose than other pretreatments methods. The alkaline pretreated BPS contained 52.3% cellulose, 10.8% hemicellulose and 8.7% lignin, which is 2.3-fold more cellulose and 0.48-fold less hemicellulose as well as 0.6-fold less lignin to the native BPS. The enzymatic saccharification of the alkaline pretreated BPS at different substrate loadings at 50 °C for 76 hours by an individual crude cellulase enzymes system from T. longibrachiatum LMLSAUL 14-1 and T. harzianum LMLBP07 13-5 cultures were used at a final concentration of 10 FPU/g. Saccharification released maximum glucose of 43.5 g/L and 20.1 g/L form alkaline pretreated BPS by crude cellulase enzymes from T. longibrachiatum LMLSAUL 14-1 and T. harzianum LMLBP07 13-5 measured at the highest solid loading. The production of bioethanol was carried out in separate hydrolysis and fermentation (SHF). Fermentation of nutrient supplemented BPS hydrolysate with an initial pH of 5.0 by S. cerevisiae UL01 occurred at 30 °C for 48 hours. The maximum ethanol concentration obtained after fermentation was 17.6 g/L corresponding to ethanol yield of 60% of the maximum theoretical yield. In conclusion, banana pseudostem is a suitable alternative substrate for the production of second-generation bioethanol.
National Research Foundation (NRF) and Vlaamse Interuniversitaire Raad (VLIR- UOS)
Книги з теми "Pseudosec"
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Maupu-Flament, Frédérique. Who's waouh!: Le dico des pseudos. Paris: Mots et cie, 2007.
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Pleurēs, Kōnstantinos A. Ratsismos: Apo to pseudos stēn alētheian. Athēnai: Ekdoseis "Kokkinē mēlia", 1998.
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Palomino, Ángel. Pseudo García Márquez, pseudo Cela y otros pseudos más. Pozuelo de Alarcón (Madrid): Patronato de Cultura de Pozuelo de Alarcón, 1996.
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Palomino, Angel. Pseudo García Márquez, pseudo Cela y otros pseudos más. Pozuelo de Alarcón (Madrid): Academia de Humor, 1996.
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5
Pearson. Invitation Psychology& Readings Pseudosci&. Pearson, 2009.
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Pearson. Psychology& Reading in Pseudosci¶normal. Pearson, 2009.
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NA. Invitatn to Psych & Reading Pseudosci¶n. Addison Wesley Longman, 2007.
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Cristo, Escriba de. OS Segredos de Enoque: Pseudoep�grafo. Independently Published, 2019.
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Pearson. Invitn Psy Mylab&rdg Pseudosci&mpl Peg Pec. Pearson, 2009.
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Cassin, Barbara. The Muses and Philosophy: Elements for a History of the Pseudos [1991]. Translated by Samuel Galson. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474412094.003.0002.
Повний текст джерелаАнотація:
Barbara Cassin’s “The Muses and Philosophy: Elements for a History of the ‘Pseudos’” (1991; translated by Samuel Galson), investigates Plato’s attempt in the Sophist to distinguish the philosopher from the sophist. Cassin pinpoints the slippery operation of the pseudos through the texts of Parmenides and Hesiod. Yet Parmenides’ rejection of not-being allows the sophist to claim infallibility. Plato’s Eleatic Stranger shows that Parmenides’ rejection of not-being is self-refuting (thus the Stranger’s famous parricide is just as much Parmenides’ suicide). Further, although the Stranger ultimately fails to find a criterion for truth or falsity, he nevertheless establishes a place for the pseudos in the distinction between logos tinos (speech of something) and logos peri tinos (speech about something). Ultimately, Cassin argues that reality of pseudos is a condition for the possibility of language, and indeed involves the very materiality and breadth of language.
Частини книг з теми "Pseudosec"
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Jones, D. R. "Fungal diseases of the root, corm and pseudostem." In Handbook of diseases of banana, abac� and enset, 207–54. Wallingford: CABI, 2019. http://dx.doi.org/10.1079/9781780647197.0207.
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Ghosh, M., Y. A. Begum, S. Muchahary, and Sankar Chandra Deka. "Nanocellulose From Banana Pseudostem: Its Characterization and Application." In Research Methods and Applications in Chemical and Biological Engineering, 155–68. Series statement: AAP research notes on chemical engineering: Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429424137-11.
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Zenaty, Gerhard. "Das »hysterische proton pseudos«, die Selbsttäuschung des Ich." In Sigmund Freud lesen, 45–46. Bielefeld, Germany: transcript Verlag, 2022. http://dx.doi.org/10.14361/9783839461228-012.
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Noordin, Norazlina, Affrida Abu Hassan, Anis Nadia Mohd Faisol Mahadevan, Zaiton Ahmad, and Sakinah Ariffin. "Lab-Based Screening Using Hydroponic System for the Rapid Detection of Fusarium Wilt TR4 Tolerance/Resistance of Banana." In Efficient Screening Techniques to Identify Mutants with TR4 Resistance in Banana, 79–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64915-2_6.
Повний текст джерелаАнотація:
AbstractField-based screening and evaluation of banana plant tolerance or resistance to Fusarium oxysporum f. sp. cubense (Foc) Tropical Race 4 (TR4) or also known as Fusarium wilt TR4 is ideal though not always feasible. Alternatively, screening of banana plantlets at lab-stage seems to be an effective method for early detection of Foc TR4 tolerance. We present a simple hydroponic system, that allows plant to grow in a water-based condition. The system has two layers, the upper layer is a tray that has holes for plantlets to be placed where the root system is supported using an inert medium such as rock-wool. The lower layer is a perforated container filled with a water-based nutrient solution. For this lab-based screening, ex vitro gamma irradiated banana cv. Berangan (AAA) rooted plantlets with a pseudostem height of 10–15 cm were inoculated by soaking in a Foc TR4 conidial suspension (106 spores/ml) for 2 h under room temperature. The Foc TR4 inoculated rooted plantlets were screened using the hydroponic system and disease symptoms were scored. In this chapter, protocols on acclimatization of ex vitro irradiated rooted plantlets, inoculation with a Foc TR4 conidial suspension, lab- screening using hydroponic system, observation for early detection of disease symptoms and scoring of disease severity are presented.
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Matějka, Ondřej. "“The ‘Proton Pseudos’ of Our Life After May 1945”: Czech Protestants and the Expulsion of Sudeten Germans." In Collective Identities and Post-War Violence in Europe, 1944–48, 165–94. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78386-0_7.
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Sowa, Rochus. "The Universal as “What is in Common”: Comments on the Proton-Pseudos in Husserl’s Doctrine of the Intuition of Essence*." In Philosophy, Phenomenology, Sciences, 525–57. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-0071-0_21.
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Lantican, Gaudencia A. "Field Screening of Gamma-Irradiated Cavendish Bananas." In Efficient Screening Techniques to Identify Mutants with TR4 Resistance in Banana, 97–109. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64915-2_7.
Повний текст джерелаАнотація:
AbstractIn our search for Cavendish bananas to withstand Fusarium oxysporum f. sp. cubense (Foc TR4) and other diseases, field screening of tissue-cultured Grand Nain banana seedlings derived from gamma-irradiated shoot tips was explored. Six months after irradiation and multiplication in the laboratory, the plantlets (M1V6) were individually grown in seedling bags under screen house conditions for 8 weeks, side-by-side with non-irradiated plantlets of the same clone. Once acclimatized, the banana plants were grown in an area confirmed positive of Foc TR4 (based on previous farm records stating that more than 50% of the plant population succumbed to the disease). Seedlings from each treatment (dose of radiation) were divided into four replicates, regardless of the number of plants. Each plant was given a unique identification code for traceability during disease monitoring, bunch and fruit quality evaluation.Incidences of Foc TR4, Moko disease (Ralstonia solanacearum) and virus diseases were monitored weekly. Plants found positive of any disease were eradicated immediately. The plant population for the succeeding generation was managed by removing the unwanted suckers, 12 weeks from planting using a spade gouge and keeping only one sucker per plant for the next generation. Agronomic characters of each plant were taken at the flowering stage. These included age to flower, height, pseudostem circumference, number of leaves and height of the sucker. The bunch was harvested 12 weeks from flowering. The number of hands in a bunch, the number of fingers and weight of a hand were recorded. The same agronomic characters of the plant were taken for the succeeding generations.Plants left standing in the field without any disease symptoms 3 years after planting were considered as putative mutants and were selected as candidate lines for multiplication and second-generation field screening. Only healthy suckers (free from viruses) were further multiplied via tissue culture technique to reach M1V6. Clean suckers from each line free of soil debris or dirt were sent to the laboratory for multiplication. At least 1000 plantlets were produced from each line for the second-generation field screening. These were grown in two locations – with and without records of Foc TR4. Field monitoring activities including plant population management, disease incidence assessment and fruit quality evaluation were carried out following the same protocols used in the establishment of the first-generation plants. Lines with population showing ≤10% Foc TR4 after the first harvest, with good vigor, fruit quality and productivity were considered as candidates for further multiplication, farmers distribution and field planting under semi-commercial scale.
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"Pseudos." In Scatter 1, 48–101. Fordham University Press, 2016. http://dx.doi.org/10.2307/j.ctt1b67w28.6.
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Bennington, Geoffrey. "Pseudos." In Scatter 1, 48–101. Fordham University Press, 2016. http://dx.doi.org/10.5422/fordham/9780823270521.003.0002.
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"2. Pseudos." In Scatter 1, 48–101. Fordham University Press, 2020. http://dx.doi.org/10.1515/9780823270552-004.
Повний текст джерелаТези доповідей конференцій з теми "Pseudosec"
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Raghavan, Sriram, and B. Ravindran. "Profiling Pseudonet Architecture for Coordinating Mobile Robots." In 2007 2nd International Conference on Communication Systems Software and Middleware. IEEE, 2007. http://dx.doi.org/10.1109/comswa.2007.382570.
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Ekrann, Steinar, and Johannes Mykkeltveit. "Dynamic Pseudos: How Accurate Outside Their Parent Case?" In SPE Reservoir Simulation Symposium. Society of Petroleum Engineers, 1995. http://dx.doi.org/10.2118/29138-ms.
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Fudaba, Hiroyuki, Yusuke Oda, Koichi Akabe, Graham Neubig, Hideaki Hata, Sakriani Sakti, Tomoki Toda, and Satoshi Nakamura. "Pseudogen: A Tool to Automatically Generate Pseudo-Code from Source Code." In 2015 30th IEEE/ACM International Conference on Automated Software Engineering (ASE). IEEE, 2015. http://dx.doi.org/10.1109/ase.2015.107.
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Zhu, Chenxi, Feng Xu, Hongmei Wu, and Xiangpei Wang. "Analysis of Volatiles from Fresh and Dry Rhizome, Pseudostem and Leaf of Musa Basjoo." In 2016 International Conference on Engineering Management (Iconf-EM 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/iconfem-16.2016.1.
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Husin, N. I., N. Isa, R. Boudville, and N. H. Hussain. "Durian (Durio zibethinus L.) shell and Banana Pseudostem fibers: Microsorbent for the removal of oil from aqueous solution." In 2012 IEEE Symposium on Humanities, Science and Engineering Research (SHUSER). IEEE, 2012. http://dx.doi.org/10.1109/shuser.2012.6268908.
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Kazemi Nia Korrani, Aboulghasem, and Gary Russell Jerauld. "Upscaling Low Salinity Benefit from Lab-Scale to Field-Scale - An Ensemble of Models with a Relative Permeability Uncertainty Range." In SPE Improved Oil Recovery Conference. SPE, 2022. http://dx.doi.org/10.2118/209412-ms.
Повний текст джерелаАнотація:
Abstract Low salinity relative permeability curves are required to estimate the benefit of low salinity waterflooding at the field-level. Low salinity benefit is measured from corefloods (i.e., at the plug scale) and the same benefit is often assumed in full field models to generate low salinity curves from high salinity curves (often pseudo curves). The validity of this assumption is investigated. We present how uncertainty distribution of low salinity benefit can be propagated through an ensemble of full field models in which each simulation case could have a set of distinctive high salinity pseudos. A 0.5-ft vertical resolution sector and its 10-ft upscaled counterpart are used. Low salinity benefit from corefloods is used to generate low salinity relative permeabilities for the high-resolution sector. Rock curves (relative permeability curves from corefloods) are used in the high-resolution sector to create "truth" profiles. Pseudo high and low salinity curves are generated for the upscaled sector by history matching high salinity and incremental low salinity truth case profiles. Low salinity benefit from the upscaled model is compared against that of high-resolution sector ("truth" model). It is crucial to include capillary pressure in high resolution models. In the case studied, analogue and published data are used to produce low salinity capillary pressure curves. Our results show that generating low salinity curves for high salinity pseudos using low salinity benefit from corefloods slightly underestimates the true low salinity benefit at field-scale (i.e., low salinity benefit estimated from high-resolution models). This conclusion is consistent for two extreme relative-permeability scenarios tested (i.e., a high total mobility-unfavorable fractional flow and low total mobility-favorable fractional flow). We demonstrate how a set of high salinity relative-permeability data obtained from corefloods, which encompasses a range for fractional flow and total mobility, can be included in ensemble modeling appropriately, and how low salinity benefit could be estimated for such an ensemble. It is adequate to generate low salinity curves for bounding high salinity sets of curves. The bounding low salinity curves can then be used to estimate low salinity curve for any interpolated high salinity curve. This significantly simplifies the process of generating a probability distribution function (pdf) of low salinity benefit for an ensemble of models, where each model has a different high salinity relative permeability. We explain the pseudoization process and how to generate a counterpart low salinity curve for a high salinity relative permeability that honors an estimated low salinity benefit from corefloods. We present how a pdf of low salinity benefit can be built for an ensemble of models with distinctive high salinity curves that each honors the low salinity benefit. The workflow simplifies the process of describing the uncertainty in the benefit of low salinity waterflooding.
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Indrawati, Susilo, Diky Anggoro, Heru Sukamto, Nurrisma Puspitasari, Sungkono, B. Indarto, Suyatno, Gontjang Prajitno, Niniet I. Arvitrida, and Lila Yuwana. "The Effectiveness of the Addition of EM4 and Molasses in Increasing Levels of N, P and K in Environmentally Friendly Liquid Fertilizers Made From Banana Pseudostem." In International Joint Conference on Science and Engineering (IJCSE 2020). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/aer.k.201124.066.
Повний текст джерела
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Ahmad Fuad, M. Izzuljad, Makky Sandra Jaya, Sharif Abdrahman, Chean Lin Lew, and May Law. "Deep Learning Based Seismic Elastic Properties Inversion Guided by Rock Physics." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211686-ms.
Повний текст джерелаАнотація:
Submitted Abstract The aim in characterizing reservoir on seismic is to be able to precisely assess rock and fluid properties from seismic data. Despite several approaches available, geoscientists still facing issue to accurately characterize the elastic & reservoir properties from seismic. This mainly because of the implementation of simplified linearized algorithms and assumptions which unable to fully address problem with non-linearity and non-uniqueness solution. Besides, the conventional approaches also typically take a very long turnaround time due to extensive computational works. Hence, implementation of deep learning-based seismic inversion with incorporation of a generalized rock physics knowledge for elastic properties prediction perhaps might be able to address the issues. The proposed approach consists of 4 main phases. The first phase is to develop rock physics understanding based on in-situ available reference well data. In the next phase, realistic synthetic dataset library at various pseudo well location is generated that mimic the actual subsurface reservoir condition and the corresponding seismic data from those pseudos well library is subsequently simulated. The third phase is to implement U-net deep learning network architecture with residual blocks of ResNet-18 for training, validation, and testing, utilizing synthetic data library generated in the previous phase. The fourth phase is to apply the pre-trained predictive network model on the actual seismic dataset as input for rock properties estimation. The robustness of the proposed approach is first evaluated based on synthetic dataset. Exceptionally good coefficient cross-correlation is obtained after evaluation on the predicted and true elastic properties; while results on the blind test dataset are slightly less compared to the training performance. This shows that the implemented model architecture with specially designed residual blocks can generalize quite well. The network model able to qualitatively distinguish the properties variation and capture the background trend of each elastic property. Besides, the proof-of-concept exercise also is successfully verified on a fluvial dominated field in Malay basin. Qualitatively, the predictive network model able to capture the background trend with some minor overfitting and identify the relative deviation of the elastic properties. The promising results are also comparable with results produced from commercial software, yet with faster turn-around time and more efficient workflow. In this work, a new approach of deep learning-based seismic inversion is introduced for elastic properties prediction which incorporates a generalized rock physics knowledge and a complex deep learning networks architecture of U-Net with residual block ResNet-18.