Дисертації з теми "Component isolation"
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Goonasekera, Nuwan Abhayawardena. "Program-level support for protecting an application from untrustworthy components." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60851/1/Nuwan_Goonasekera_Thesis.pdf.
Повний текст джерелаLin, Zhefeng. "Isolation and analysis of TCTR2, a tomato gene related to the ethylene signalling component CTR1." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312236.
Повний текст джерелаOchei, Laud Charles. "Architecting the deployment of cloud-hosted services for guaranteeing multitenancy isolation." Thesis, Robert Gordon University, 2017. http://hdl.handle.net/10059/2448.
Повний текст джерелаHuang, Bing-Quan. "Isolation and characterization of embryo sacs and their component cells in a synergidless (Plumbago) and a synergid-bearing (Nicotiana) angiosperm /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1991.
Знайти повний текст джерелаDastoor, Farahad. "Isolation and regulation of expression of the Rhodobacter capsulatus suca gene encoding the E1o component of the α-ketoglutarate dehydrogenase enzyme complex". Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29805.
Повний текст джерелаScience, Faculty of
Microbiology and Immunology, Department of
Graduate
Santos, da Gama Kiev. "Vers les applications fiables basées sur des composants dynamiques." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00633320.
Повний текст джерелаRazanau, Aleh [Verfasser], and N. F. [Akademischer Betreuer] Käufer. "Isolation and characterization of suppressors of the prp1 gene, encoding a regulatory component of the pre-catalytic spliceosome in fission yeast / Aleh Razanau ; Betreuer: N. F. Käufer." Braunschweig : Technische Universität Braunschweig, 2010. http://d-nb.info/1175826820/34.
Повний текст джерелаDeSilva, Veronica. "Selenium redox cycling isolation and characterization of a stimulatory component from tissue of loblolly pine for multiplication of somatic embryos; development of an assay to measure l-phenylalanine concentration in blood plasma /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/29788.
Повний текст джерелаCommittee Chair: Sheldon May; Committee Members: Nicholas Hud, Stanley Pollock, James Powers, and Gerald Pullman. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Pierre, Allyn Grey de Almeida Lima. "Transações reconfiguráveis para o ambiente móvel." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275807.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação
Made available in DSpace on 2018-08-16T08:41:15Z (GMT). No. of bitstreams: 1 Pierre_AllynGreydeAlmeidaLima_M.pdf: 1760009 bytes, checksum: 4af51767131cfa3c30ee8f7ea8830949 (MD5) Previous issue date: 2009
Resumo: Dentre as tecnologias emergentes, a computação móvel tem a sua posição de destaque. Os dispositivos móveis estão mais presentes na vida das pessoas e contendo aplicações mais sofisticadas e semelhantes às executadas em computadores pessoais. Num mundo globalizado, onde o tempo é escasso e valioso, os dispositivos móveis mantêm as pessoas em contato com informações e atividades que elas desejam enquanto elas estão em movimento. Um exemplo recente é aumento do uso da internet em celulares, permitindo que os usuários acessem diversos tipos de aplicações, tendo grande parte delas interação com bancos de dados. Apesar de atrativa, a computação móvel traz desafios ao desenvolvedor, pois ele deve considerar os recursos limitados tais como largura de banda, conectividade e o alto custo da obtenção de dados. Nesse contexto, as transações representam um importante papel de garantir que o dinamismo do ambiente da computação móvel não comprometa a confiabilidade das aplicações. Porém, algumas aplicações não podem ser implementadas considerando o modelo de transações tradicional, pois elas têm um tempo mais longo de duração do que aquelas convencionalmente modeladas. Sendo assim, as configurações de uma transação realizadas no início de sua execução podem deixar de ser adequadas no decorrer da sua execução, devido às mudanças no ambiente. Diversos modelos de transações têm sido apresentados na literatura para atender a esse ambiente. Apesar de muitas idéias interessantes e relevantes, alguns modelos não permitem que a adaptação diante da variação dos recursos seja realizada durante a execução de uma transação e quando permitem, eles realizam grandes reconfigurações arquiteturais. Motivada por essas questões, essa dissertação propõe transações reconfiguráveis, isto é, a configuração dinâmica de mecanismos transacionais antes do início da transação e a reconfiguração de propriedades transacionais durante sua execução. Para que a reconfiguração dinâmica fosse realizada, um modelo de componentes chamado OpenCOM foi utilizado na arquitetura proposta, por este ser reflexivo, leve e independente de plataforma. O nível de isolamento é a propriedade transacional que poderá ser reconfigurada durante a transação e o controle de concorrência é o mecanismo que garantirá o isolamento entre as transações e poderá ser configurado antes do início da transação. A configuração do controle de concorrência é uma contribuição inovadora dessa dissertação, pois em muitos trabalhos existentes não é possível a configuração desse mecanismo transacional. A fim de validar a arquitetura proposta, um protótipo de um sistema de vendas foi desenvolvido. Através dessa implementação foi possível analisar os impactos da reconfiguração durante uma transação
Abstract: Among the emerging technologies, mobile computing has its position of prominence. Mobile devices are more present in people's lives and with more sophisticated applications similar to those implemented in personal computers. In a globalized world where time is scarce and of great importance, mobile devices keep people in touch with information and activities they want while they are moving. A recent example is the increasing use of the Internet on mobile phones allowing users to access various types of applications and much of them interacting with databases. Although attractive, the mobile computing brings challenges to the developer because he must consider the limited resources such as bandwidth, connectivity and the high cost of obtaining data. In this context, the transactions represent an important role to ensure that the dynamic environment of mobile computing does not compromise the reliability of applications. However some applications cannot be implemented given the traditional transactions models because they have a longer duration than those conventionally shaped. Therefore the settings of a transaction carried out before its execution may not be appropriate during the execution due to changes in the environment. Various transactions models have been reported in the literature to serve this environment. Although having many interesting and relevant ideas, some models do not allow the adaptation in the face of change of resources during the execution of a transaction and when this is allowed, they require many transactional reconfigurations. Motivated by these issues, this dissertation proposes reconfigurable transactions that are the dynamic configuration of transactional mechanisms before the beginning of the transaction and the reconfiguration of transactional properties during its execution. For dynamic reconfiguration, a component model called OpenCOM has been used in the proposed architecture because it is reflective, lightweight and platform-independent. The isolation level is the property that may be reconfigured during the transaction and the concurrency control is the mechanism that ensures the isolation between the transactions and it can be configured before the beginning of transaction. The configuration of concurrency control is an original contribution of this dissertation because many works do not allow the configuration of this transactional mechanism. In order to validate the proposed architecture, a prototype of a sales system has been developed. Through this implementation it was possible to analyze the impacts of the reconfiguration during a transaction
Mestrado
Sistemas Distribuidos
Mestre em Ciência da Computação
Xu, Yue, of Western Sydney Hawkesbury University, of Science Technology and Agriculture Faculty, and School of Food Science. "Isolation and characterization of components from whey." THESIS_FSTA_SFS_Xu_Y.xml, 1996. http://handle.uws.edu.au:8081/1959.7/248.
Повний текст джерелаDoctor of Philosophy (PhD)
Xu, Yue. "Isolation and characterization of components from whey /." View thesis, 1996. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030808.133723/index.html.
Повний текст джерелаSouthcott, Laura. "Components of premating reproductive isolation in threespine stickleback." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/36522.
Повний текст джерелаDotimas, E. M. "Isolation, structure and action of bee venom components." Thesis, University of Essex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371865.
Повний текст джерелаMizzi, Raphaël. "Mécanismes cognitifs et substrat neuronal de la hérarchisation de la saillance et de la progression de l'attention : approche psychophysique." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE2122/document.
Повний текст джерелаWhen confronted to a new environment, the visual system faces too much information intake and cannot process it all at once. Before any eye movement, early automatic attention explores the visual scene in order to select relevant items.Recent research revealed that the exploration of the visual scene is not a random process, but is based on the respective saliency of the items in the field. Salience is not a characteristic of an item per se but is emerging as a result of the comparison between an item and its visual neighborhood. For instance, a yellow flower in a garden of red flowers will be considered as more salient than the others in its visual neighborhood. Thus, a hierarchical ordering of the items is continuously established in a preattentive stage, and consists in a sorting of every element from the most to the least salient. Attention, then, relies on this hierarchy to progress in the visual field. The present dissertation had for objective to investigate the cognitive mechanisms involved in this phenomenon: what mechanisms support the salience-based progression of visual attention? Several papers are reported here and explored this question with experimental Psychology.Moreover, numerous works in Psychology, Neurophysiology and Neuroimaging took interest in the neural substrate of visual attention and revealed several key-structures that would subtend the mechanisms involved in attentional functions. However, when it comes to the salience-based progression of attention, only one study could bring cues of the involvement of certain visual pathways in this phenomenon. Another objective of the present dissertation was to define the cortical and sub-cortical structures that constitute those pathways, in order to explore their roles in the salience-base progression of attention. Several papers in the present report are investigating this aspect through Psychophysics and Electroencephalography studies
Christopherson, Indu P. Cheung H. Tak. "Isolation and characterization of extracellular matrix components from bovine bone marrow." Normal, Ill. Illinois State University, 1996. http://wwwlib.umi.com/cr/ilstu/fullcit?p9720805.
Повний текст джерелаTitle from title page screen, viewed May 30, 2006. Dissertation Committee: H. Tak Cheung (chair), Herman E. Brockman, Alan J. Katz, Marjorie A. Jones, Brian J. Wilkinson. Includes bibliographical references (leaves 97-105) and abstract. Also available in print.
Stone, Howard C. "Isolation and characterisation of cadmium binding components of the scallop, Pecten maximus." Thesis, University of Aberdeen, 1985. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU356206.
Повний текст джерелаWilson, C. F. "Identification of membrane components associated with the expression of the Rhesus D antigen on human red cells." Thesis, Open University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355331.
Повний текст джерелаForister, Matthew Lewis. "Components of reproductive isolation within the Mitoura (Lepidoptera: Lycaenidae) species complex of Northern California /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.
Повний текст джерелаDeshpande, Bhavana. "Development of pancreatic islet isolation system peripheral components - analysis of process variables and outcomes." Cincinnati, Ohio : University of Cincinnati, 2008. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1204913111.
Повний текст джерелаCommittee/Advisors: Arthur J. Helmicki (Committee Chair), Horacio H.L. Rilo (Committee Member), Ali A. Minai (Committee Member). Title from electronic thesis title page (viewed Apr.30, 2008). Includes abstract. Includes bibliographical references.
Mutyala, Srikanth Babu. "Development of efficient pancreatic islet isolation system redesign of critical components and analysis of process variables /." Cincinnati, Ohio : University of Cincinnati, 2008. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1205155166.
Повний текст джерелаCommittee/Advisors: Arthur J Helmicki PhD (Committee Chair), Horacio LR Rilo MD (Committee Member), Ali A Minai PhD (Committee Member). Title from electronic thesis title page (viewed Apr.30, 2008). Includes abstract. Includes bibliographical references.
Avent, N. D. "Isolation and characterization of erythrocyte membrane components that express the rhesus and related blood group antigens." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233769.
Повний текст джерелаMUTYALA, SRIKANTH BABU. ""Development of Efficient Pancreatic Islet Isolation System: Redesign of Critical Components and Analysis of Process Variables"." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1205155166.
Повний текст джерелаLindberg, Stina. "Evaluation of a genomic work flow for the detection of Bacillus subtilis in animal feed and food samples." Thesis, Uppsala University, Department of Medical Biochemistry and Microbiology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6345.
Повний текст джерелаBacillus anthracis is one of the most feared agents of biological warfare and causes the
deadly disease called anthrax. SVA (statens veterinärmedicinska anstalt) is working on a
project together with SLV (statens livsmedelsverk) where the target is to find rapid and
effective detection methods for Bacillus anthracis in animal feed and food samples. Bacillus
subtilis, which is harmless, was used in this study as a model organism to Bacillus anthracis.
A known concentration of vegetative Bacillus subtilis was spiked in animal feed and food
samples. The genomic work flow was based on automated DNA isolation and real time PCR.
The aim of the study was to screen for inhibitory components in the animal feed and food
samples using two different DNA isolation robots; Magnatrix 8000 and Biorobot EZ1. The
results showed that DNA of high quality was extracted from the samples with both robots.
However, the CT-value generated by the real time PCR showed considerable variation
depending on the sample matrix. Some samples, for instance egg and liver, were problematic
and gave low concentrations and high CT-values probably due to inhibitory components in the
samples. Further studies will be needed to solve these problems and optimize the methods that
were used in this study.
Roostaei, Davoud. "Isolation and characterisation of anti-diabetic pharmacological activities of phytoestrogens and components of Moringa peregrina (Forssk) Fiori." Thesis, London Metropolitan University, 2015. http://repository.londonmet.ac.uk/1141/.
Повний текст джерелаSchläppi, Anna-Katharina. "The paraflagellar rod of Trypanosoma brucei : isolation and characterization of the genes coding for the major components /." Bern, 1989. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Повний текст джерелаVasiljev, Andreja. "Isolation and characterisation of the intermembrane space components of the mitochondrial TIM22 protein import machinery of Neurospora crassa." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-28243.
Повний текст джерелаPisani, Angela Paulina Grandeaux. "ESTUDO DE CORTINAS BLACK-OUT COMO COMPONENTES NO ISOLAMENTO SONORO DE FACHADAS." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/7708.
Повний текст джерелаNas grandes cidades, encontram-se freqüentemente edifícios submetidos a elevados níveis de poluição sonora, cujas fachadas não isolam adequadamente o ruído externo, situação esta que traz conseqüências para o conforto sonoro e para a saúde dos indivíduos. Associado a isto, está o alto custo dos materiais que apresentam bons índices de redução sonora, havendo a necessidade de se estudarem materiais alternativos, com custos menos elevados, como é o caso das cortinas black-out. Levando-se em conta estes fatores, o objetivo deste trabalho é averiguar o acréscimo no índice de isolamento sonoro a ruídos externos, gerado pela colocação de cortinas de vinil e de poliéster, sobrepostas a um elemento de fachada. Os ensaios foram realizados no laboratório do Setor de Acústica da Universidade Federal de Santa Maria. A partir dos resultados dos ensaios verificou-se o desempenho de várias composições de cortinas, obtendo-se um aumento de 2 à 5 dB no índice de isolamento sonoro. A duplicação das cortinas possibilitou um aumento em torno de 1 dB, em relação às cortinas simples. Não houve alteração no índice de isolamento sonoro com o transpasse das cortinas. A colocação de painéis de lã de vidro de diferentes espessuras pouco influenciou no isolamento sonoro da fachada. A partir deste trabalho, pôde-se quantificar qual a melhoria no isolamento sonoro das fachadas propiciada pela colocação de cortinas black-out à disposição no mercado.
Ha, Tracy. "The role of pathogen defense signaling components in ABA signal transduction and isolation of an ABA/C23 signaling mutant." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p1469579.
Повний текст джерелаTitle from first page of PDF file (viewed Oct. 15, 2009). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 67-76).
Champ, Karen Irisa. "Isolation and characterization of components of low temperature-induced signal transduction pathways in Poncirus trifoliata (L.) Raf. and Citrus paradisi Macf." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004379.
Повний текст джерелаFlory, Mark Randall. "Isolation and characterization of calmodulin-binding centrosome components related to Saccharomyces cerevisiae Spc110p from the fission yeast Schizosaccharomyces pombe and humans /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5061.
Повний текст джерелаOliveira, Miriam Ricciulli de. "Aplicação da análise termogravimétrica na avaliação da interação entre os componentes do bagaço e da palha de cana-de-açúcar /." Guaratinguetá, 2020. http://hdl.handle.net/11449/192260.
Повний текст джерелаResumo: A biomassa apresenta-se como uma promissora alternativa aos combustíveis fósseis por ser renovável, de baixo custo e amplamente disponível. Esta pode ser obtida a partir de resíduos agroindustriais mostrando-se como um importante modelo de energia sustentável. Os principais componentes da biomassa são hemicelulose, celulose e lignina e, por possuírem diferentes propriedades químicas, influenciam diretamente na eficiência de um processo de conversão termoquímica. Metodologias convencionais atualmente aceitas na determinação dos principais componentes da biomassa requerem maior tempo e possuem alto custo. A análise termogravimétrica (TG) é uma técnica rápida e de baixo custo, resultando em curvas TG/DTG que fornecem uma indicação do percentual de cada um dos componentes da biomassa. Entretanto, não há uma metodologia aceita no sentido de substituir o método convencional por via úmida na determinação dos constituintes de materiais lignocelulósicos. Portanto, o objetivo deste estudo é avaliar o efeito da interação entre os componentes do bagaço e da palha de cana-de-açúcar (hemicelulose, celulose e lignina), isolados por diferentes tratamentos químicos, por meio da análise de sinergismo em ensaios termogravimétricos. Este estudo contribuirá para a elaboração de uma metodologia para determinação dos teores desses componentes por meio da análise termogravimétrica, com precisão similar aos métodos convencionais. Os resultados da caracterização química e a caracterização físico-quími... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Biomass presents itself as a promising alternative energy source to replace or reduce the use of fossil fuels because it is renewable, low cost and widely available. This can be obtained from agro-industrial waste, showing itself as an important model of sustainable energy. The main components of biomass are hemicellulose, cellulose and lignin and, due to their different chemical properties, they directly influence the efficiency of a thermochemical conversion process. Currently, the accepted methodologies for determining the main components of biomass require time and are expensive. Thermogravimetric analysis (TGA) is a fast and low-cost technique, resulting in TGA/DTG curves that provide an indication of the percentage of each biomass components. However, there is no accepted methodology in the sense to replace the conventional wet method use to determining the lignocellulosic materials components. Therefore, the objective of this study is to evaluate the effect of the interaction between the components of sugarcane bagasse and straw (hemicellulose, cellulose and lignin), isolated by different chemical treatments, through the analysis of synergism in thermogravimetric tests. This study will contribute to the development of a methodology for determining the content of these components through thermogravimetric analysis, with precision similar to conventional methods. The results of chemical characterization and physico-chemical characterization by FTIR and DRX technique of t... (Complete abstract click electronic access below)
Mestre
Perrin, Rémi. "Characterization and design of high-switching speed capability of GaN power devices in a 3-phase inverter." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI001/document.
Повний текст джерелаThe french industrial project MEGaN targets the development of power module based on GaN HEMT transistors. One of the industrial applications is the aeronautics field with a high-constraint on the galvanic isolation (>100 kV/s) and ambient temperature (200°C). The intent of this work is the power module block (3 phases inverter 650 V 30 A). The goal is to obtain a small footprint module, 30 cm2, with necessary functions such as gate driver, gate driver power supply, bulk capacitor and current phase sensor. This goal implies high efficiency as well as respect of the constraint of galvanic isolation with an optimized volume. This dissertation, besides the state of the art of power modules and especially the GaN HEMT ones, addressed a control signal isolation solution based on coreless transformers. Different prototypes based on coreless transformers were characterized and verified over 3000 hours in order to evaluate their robustness. The different studies realized the characterization of the different market available GaN HEMTs in order to mature a circuit simulation model for various converter topologies. In the collaborative work of the project, our contribution did not focus on the gate driver chip design even if experimental evaluation work was made, but a gate driver power supply strategy. The first gate driver isolated power supply design proposition focused on the low-voltage GaN HEMT conversion. The active-clamp Flyback topology allows to have the best trade-off between the GaN transistors and the isolation constraint of the transformer. Different transformer topolgies were experimentally performed and a novel PCB embedded transformer process was proposed with high-temperature capability. A lamination process was proposed for its cost-efficiency and for the reliability of the prototype (1000 H cycling test between - 55; + 200°C), with 88 % intrinsic efficiency. However, the transformer isolation capacitance was drastically reduced compared to the previous prototypes. 2 high-integrated gate driver power supply prototypes were designed with: GaN transistors (2.4 MHz, 2 W, 74 %, 6 cm2), and with a CMOS SOI dedicated chip (1.2 MHz, 2 W, 77 %, 8.5 cm2). In the last chapter, this dissertation presents an easily integrated solution for a phase current sensor based on the magnetoresistance component. The comparison between shunt resistor and magnetoresistance is experimentally performed. Finally, two inverter prototypes are presented, with one multi-level gate driver dedicated for GaN HEMT showing small switching loss performance
Denison, T. J. "The management of technology transfer from research institutes to industry: isolating key components of process success and failure." Thesis, Cranfield University, 1999. http://dspace.lib.cranfield.ac.uk/handle/1826/10644.
Повний текст джерелаDenison, Tim J. "The management of technology transfer from research institutes to industry : isolating key components of process success and failure." Thesis, Cranfield University, 1999. http://dspace.lib.cranfield.ac.uk/handle/1826/10644.
Повний текст джерелаAdib, Natanzi Heshmatollah. "Effect of bonding variation and component combination on dynamic characteristics of compound semi-bonded carbon fiber reinforced elastomeric isolator (CSB-CFREI)." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59129.
Повний текст джерелаApplied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
Curtis, Megan E. "Due to a Bone Marrow Transplant, is Loneliness From Hospital Isolation a Predictor of Health Outcomes." UNF Digital Commons, 2014. http://digitalcommons.unf.edu/etd/515.
Повний текст джерелаDehghanpoor, Sichani Ahmad. "Soil-pile-superstructure systems under combined horizontal and vertical strong ground motions." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207885/1/Ahmad_Dehghanpoor%20Sichani_Thesis.pdf.
Повний текст джерелаMou, Chai-Hung, and 牟嘉鴻. "Development of Novel Microwave Branch-Line Coupler, Dual-Band Rat-Race Coupler and Wideband Passive Isolation Component." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/38125601258159899186.
Повний текст джерела國立臺灣科技大學
電子工程系
100
The aim of this thesis is to develop microwave branch-line couplers, dual-band rat-race couplers, and the passive isolation component based on new circuits structures. For the branch-line coupler design, asymmetrical E-equivalent sections are used to design lumped-element branch-line couplers with the improvement of the return loss bandwidth. To reduce the number of lumped-elements, in this thesis, the asymmetrical E-equivalent section is further evolved into asymmetrical π- and T- equivalent structures for the branch-line coupler design. For the dual-band rat-race coupler design, L sections are exploited to design dual-band rat race couplers. The L section is composed of a transmission line and a series LC resonator to have the dual-band property. By using L sections, this thesis develops five types of dual-band rat-race couplers. The miniaturized dual-band coupler only occupies a 10 % circuit size of the conventional one at the center frequency of the 1st passband. For the passive isolation component design, three sets of diamond-shape slot-coupled microstrip lines are integrated into a passive isolation component. Since the slot-coupled microstrip can provide a wideband and accurate quadrature phase difference, the developed passive isolation component can effectively improve the isolation level and bandwidth between transmitting and receiving ports. The developed isolation component has a 30 dB isolation of 44.9 %.
FAN, GUAI-HUA, and 范冠華. "Isolation and identification on the active component in piper betle infloresence extract against benzo(a)pyrene-induced mutagenicity." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/14184378647365445898.
Повний текст джерелаWU, LI-QIN, and 吳麗琴. "Isolation of the bioactive components from dendrobium nobile." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/59827843232995853919.
Повний текст джерелаTing, Siew Chin, and 陳曉琴. "Isolation and Identification of Antiviral Components of Schizonepeta tenuifolia (STE)." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/3btcc8.
Повний текст джерелаChen, Bo-Nan, and 陳柏男. "Isolation and characterization of the pigment components from Meiothermus taiwanensis." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/46106992281106663678.
Повний текст джерела淡江大學
化學學系
92
The optimum growth conditions for Meiothermus taiwanesis (NTU 30) and the heavy metal tolerance were determined in this study. The result shows that the bacteria still can grow in the presence of 4 mM managanese ion. Meanwhile, a 103.9 Kd protein was induced to express inside the cell. Its physiological role is still unknown. Meiothermus taiwanesis (NTU 30) can accumulate manganese inside the cell membrane and cytoplasm. The concentrations were 17.7 and 56.25 μM, respectively. A deep-orange pigment, meiothin, was isolated from the cell membrane of the bacteria. Its extinction coefficient is 742.87 cm-1M-1, and molecule weight is 1177.6 as determined by electrospray mass spectrum. The potential effect of meiothin was investigated in vitro. This compound shows DPPH-radical scavenging activity, reducing capacity, and superoxide anion scavenging activity.
Lei, Bo. "Isolation of cadmium-binding components from proteins of flaxseed (Linum usitatissimum L.)." Thesis, 2006. http://hdl.handle.net/2429/18451.
Повний текст джерелаLand and Food Systems, Faculty of
Graduate
Chia-Jui, Tsai, and 蔡佳芮. "Isolation and Identification of Herbal Components as FXR and PPAR alpha Modulators." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/57846858063680285593.
Повний текст джерела高雄師範大學
化學系
97
Hyperlipidemia is the life-threaten disease with an elevation of lipids including cholesterol, cholesterol esters, phospholipids and triglycerides in the bloodstream. Apart from hyperlipidemia, cholesterol also plays an essential role in the regulation of the progression of numerous important diseases including Alzheimer disease so generation of suitable cholesterol-lowering reagents is urgent to achieve. Especially, the development of safe Chinese herbal cholesterol-lowering reagents can offer hyperlipidemia patients an alternative choice as the long-term supplements. PPAR α and FXR are two members of nuclear receptor superfamily. Due to highly involving in the regulation of lipid-metabolisms, they are essential target proteins to develop cholesterol-lowering reagents by novel pharmaceutical companies worldwide. Atractylodes ovata is widely used in herbal diets as a tonic agent in Taiwan and it has several health-promoting functions, including antidiarrheal action, a benefit to the stomach, the arrest of abnormal sweating, a diuretic action. Pharmacologically, Atractylodes ovata was confirmed to possess tocolysis, hypoglycemic, anti-tumor, anti-coagulant effects. However, until now, no report has been disclosed to mention that Atractylodes ovata contains PPAR α and FXR modulators. In this study, we utilized the flash chromatography to isolate and purify active components from Atractylodes ovata and investigated their bioactivity against PPAR α and FXR by transient transfection reporter assays. The active compounds were identified through spectroscopy like NMR, DEPT, HMQC, HMBC, and H-H COSY. Here we identified four sesquiterpenes that act as FXR antagonists as well as PPAR α agonists, and one of them could induce HepG2 and HSC apoptosis which might be resulted from its ability to antagonize Bcl-XL and lead to activate p53. All the evidences from this study strongly suggest these sesquiterpenes should be potential plant drugs as the treatments of hyperlipidemia.
Ho, Meng-Chi, and 何孟琦. "Isolation and Quality Control of Bioactive Chemical Components from Formosan Acmella oleracea." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/78875929724118405785.
Повний текст джерела高雄醫學大學
天然藥物研究所
101
Acmella oleracea (AO) is an annual herb native to the tropical parts of Africa and South America with a yellow flower head, which is commonly used in traditional folk medicine to cure toothaches, throat complaints, and stomatitis. Alkylamides, one category of AO major active components, are regarded for their diuretic, antibacterial, and anti-inflammatory activities. Besides the medicinal use, alkylamides are well-known for their anti-wrinkle activity and used in different skin care products. Despite the extensive use in cosmetic industry, the production and marketing of AO and its alkylamides face a critical threat due to the lack of a reliable quality assessment method to evaluate concentration of alkylamides. In this investigation, we report a convenient method for concentrating the alkylamide-rich fraction (ARF), from the ethanolic extract of AO flowers (EEF-AO). Using bio-activity guided isolation technique, five alkylamides, including spilanthol (3), (2E,6Z,8E)-N-(2-methylbutyl)-2,6,8-decatrienamide (4), (2E,5Z)-N-isobutylundeca-2,5-diene-8,10-diynamide (5), (2E)-N-isobutyl-2-undecene-8,10-diynamide (6), (2E)-N-(2-methylbutyl)-2-undecene-8,10-diynamide (7), and a mixture of steroids 1-2, compound 5 is new. To detect the concentration of these markers in different plant parts, a rapid HPLC-PDA method for simultaneous detection of alkylamides from AO and A. ciliata (AC) was established. Two major alkylamides 3 - 4 were separated as the chemical markers of ARF. Using the developed HPLC-PDA protocol, the contents differences of major alkylamides in different part of AO and AC were achieved. Utilizing the efficient extraction, concentration and rapid analysis method not only provide necessary information about AO alkylamides concents in different plants parts but also provide a quality control assessment of AO alkylamides during different harvesting times.
Lee, Ming-Yi, and 李明怡. "Isolation and identification of antitumor and anti-inflammatory active components from adlay bran." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/20905583499156011555.
Повний текст джерела國立臺灣大學
食品科技研究所
96
Adlay (Coix lachryma-jobi L. var. ma-yuen Stapf ) is an one year grass crop that has long been used as a traditional Chinese medicine to treat tumor and inflammation. Recent studies have continuously demonstrated the physiological effects of adlay and reveal that duhulled adlay posseses a higher anti-tumor and anti-inflammation activity than polished adlay. In summation of references, the adlay seeds contain some anti-tumor or anti-inflammation active compounds especially in the adlay bran. However, the active constituents involved in anti-tumor or anti-inflammation activity are still unknown. Therefore, the aim of our study is based on to discuss function of anti-tumor and anti-inflammation in food, to separate and identify the physiological effective constituents contained in adlay bran via active fractions. The study results show that the ethyl acetate fraction from adlay bran methanolic extract (ABM-EtOAc) had the highest ability to reduce survival rate of lung and colorectal carcinoma cell. It is also found that inhibition of cell cycle phase change, and cell apoptosis. Concerning anti-inflammation research, ABM-EtOAc and ABM-BuOH subfractions all inhibit LPS-induced TNF-α and IL-1β which released from RAW 264.7. Furthermore, ABM-EtOAc and ABM-BuOH subfractions inhibit COX-2 expression of A549 and HT29 at 50 μg/ml concentration, while constitutive COX-1 expression is not affected. Moreover, the ABM-BuOH subfraction is the best. Thus, these results indicate that ABM-EtOAc and ABM-BuOH subfractions must have some anti-tumor or anti-inflammation active compounds. They inhibit cancer cell growth by promoting apoptosis of cancer cell. The chemical compound of plant has preventative effects on chronic inflammation-related cancer. Furthermore, 25 pure compounds are isolated and identified by inhibiting growth of lung cancer and colon cancer. The coixspirolactam A, coixspirolactam B, and coixspirolactam C are newly identified compounds. Caffeic acid, protocatechuic acid, chlorogenic acid, 3-O-coumaroyl-5β-sitostanol, 3-O-caffeoyl-5β-sitostanol, methyl dioxindole-3-acetate and 24,25-oxidocycloartanol are first isolated from adlay. From the anti-tumor activity test, it shows that there are only Caffeic acid, Protocatechuic acid, and Chlorogenic acid have anti-tumor activity in phenolic acid. From another hand, via anti-inflammation activity, the nine pure compounds, which are not found in ABM-EtOAc, are isolated from ABM-BuOH using many different kinds of isolation technology. Including one Apocarotene: Loliolide, one triterpinoid: 3β-Hydroxyolean-18-en-28-oic acid, one lignan: Pinoresinol, one phenolic ester: (E)-methyl 3,4-dihydroxycinnamate, one sugar-link sterol: β-Sitosteryl-3β-glucopyranoside, one isoflavone: Biochanin A, three flavonoid: 5, 7-Dimethoxy-4''-hydroxyflavan, 4'', 5, 7-Trihydroxyflavone (apigenin), Farrerol, all of the nine pure compounds are first isolated from adlay.
Lorjarernchai, Waraporn, and 白茉莉. "Isolation and Analysis of Functional Components From Vegetable Enzymatic Hydrolysate of Soybean Okara." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/07284014285820002963.
Повний текст джерела中國文化大學
生物科技研究所
102
Soybean residue (okara) was found to have a function as angiotensin I-converting enzyme (ACE) inhibitor. In this study, the soybean residue was a kind of waste in soybean processing manufactory and was used to produce peptides by Papain-hydrolysis (from Papaya) or Bromelain-hydrolysis (from Pineapple). Bioactive peptides against ACE activity were focused and the potent bioactive peptides were separated by using molecular weight cut off and reverse-phase high-performance liquid chromatography (RP-HPLC) was used to assay the inhibitor activity of peptides. The function of peptide fractions was evaluated by the inhibitory activity against ACE. In this study, conditions for preparing small peptides from soybean by using vegetable enzyme hydrolysis were established. It showed that incubation of soybean residue with Papain at 70°C for 5 hours and Bromelain at 50°C for 5 hours could obtain hydrolysates with the smallest peptides and the highest amount of peptides. The fraction of peptides from soybean residues hydrolysate was separated according to different molecular weights by using ultrafiltration membrane cut-off ranging from 3,000 Da to 50,000 Da and each fraction used to evaluate inhibitory activity against ACE by RP-HPLC method. It was found that the peptide fractions from Bromelain hydrolysis showed a higher ACE inhibitory activity than that from Papain hydrolysis. In this case, the peptide fraction with high inhibitory activity against ACE was presented in crude hydrolysate, and with sequential decrease in inhibitory activity was in small peptide fraction 10-30 kDa, 3-10 kDa, and < 3 kDa, respectively. In conclusion, Bromelain is a good choice for producing peptides from soybean residues to have good inhibitory activity against ACE due to it could produce more peptides from soybean residues with very low concentration of proteolysis enzyme.
Erstad, Kristin, Sylvi Høiland, Tanja Barth, and Per Fotland. "ISOLATION AND MOLECULAR IDENTIFICATION OF HYDRATE SURFACE ACTIVE COMPONENTS IN PETROLEUM ACID FRACTIONS." 2008. http://hdl.handle.net/2429/1404.
Повний текст джерелаHsu, Wenkuang, and 許文光. "Isolation, Purification, and Determination of Functional Components in Fermentation of Coriolus versicolor LH1." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/82985524581442424135.
Повний текст джерела大葉大學
生物產業科技學系
101
Intracellular polysaccharides (iP) and extracellular polysaccharides (eP) were separated and purified from Coriolus versicolor LH1 mycelia and its culture mediem, respectively. iP and eP have been characterized for their α-glucosidase inhibitory, antioxidant properties, and chemical components. Two polysaccharides fractions (ePL-F6-2 and iPL-F5-5-1) were extracted, separated, and purified from LH1 mycelia and its culture medium by using microwave extraction technology, a DEAE-SepharoseTM CL-6B column, a Diaion® HP20 macroporous adsorption column, and a SephadexTM G-50 gel-permeation column. The principal constituents of ePL-F6-2 and iPL-F5-5-1 were polysaccharides-composites. The α-glucosidase inhibition activity, IC50 values, of these two fractions were 0.9 mg/mL and 0.8 mg/mL, respectively. The antioxidant activity, EC50 values, of the best activity fraction was ePL-F6-2 in 0.2 mg/mL. The type of α-glucosidase inhibition was competitive owing to the glycosidic bonds (α-1,4-glucosidic linkages) in the iPL-F5-5-1, and noncompetitive in ePL-F6-2. In our research, two-stage separation and purification strategy instead of the Sevag method to obtain purified polysaccharides from the iP and the eP of C. versicolor LH1 mycelia. Furthermore, the ePL-F6-2 and iPL5-5-1 fractions have potential to treat diabetes because of their α-glucosidase inhibitory activity.
Chen, Hong-Jhang, and 陳宏彰. "Allergic Immune-regulatory Effects of Adlay Bran and Isolation and Identification of Bioactive Components." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/j3gu8m.
Повний текст джерела國立臺灣大學
食品科技研究所
98
Allergy is an immune dysfunction, including atopic dermatitis, allergic rhinitis, asthma, etc. In Taiwan, the allergic disease is more and more prevalent. In addition to the usage of drugs to stop the allergic responses, taking advantage of dietary regimen is more important to regulate the immune system, to reduce the allergic symptom and avoid the waste of drugs. The inflammatory response is caused by allergic mediators such as histamine released and cytokine secretion by the mast cell, and the inflammatory response activated by macrophage. Therefore, we first investigated the anti-allergic and anti-inflammatory effects of ethanolic extracts of adlay on the RBL-2H3 cells and RAW 264.7 cells. Except the polished adlay, the ethanolic extracts from different parts of adlay can suppress the β-hexosaminodase released from RBL-2H3 cells stimulated with 1 μM A23187. The ethyl-acetate fraction from ethanolic extracts of adlay bran (ABE-EtOAc) presented more effective inhibition with an EC50 at 40.8 μg/mL. The 40~100% EtOAc/Hex sub-fractions of ABE-EtOAc can significantly inhibit the release of histamine with EC50 between 71~87 μg/mL Moreover, ABE-EtOAc suppressed IL-4, IL-6 and TNF-α secreted from RBL-2H3 cells indicated that the adlay bran can inhibit not only the cell degranulation but also the cytokine secretion. The alday contains anti-allergic compounds, such as palmitic acid, 4-hydroxybenzaldehyde, 6-methoxy-3H-benzoxazol, 4-hydroxyacetophenone, p-coumaric acid and quercetin, can reduce ROS production, inhibit the phosphorylation of Akt and ERK, and decrease the PKC protein expression. These combined effects influence the signaling transduction in RBL-2H3 cells, and showing the anti-allergic effect. The 40~100 % EtOAc/Hex sub-fractions of ABE-EtOAc at 50 μg/mL has no toxicity on the RAW 264.7 cells and inhibit the NO release. Furthermore, the result that ABE-EtOAc suppresses the IL-6 and TNF-α secretion in LPS (1 μg/mL)-stimulated RAW 264.7 cells in concentration dependent manner at 6~30 μg/mL. From above results demonstrates that the adlay bran has an anti-inflammatory effect. In the primary cells isolated from mice study, ABE-EtOAc suppressed the IL-6 and TNF-α secretion from peritoneal macrophages revealing the anti-inflammatory effects ex vivo. Furthermore, ABE-EtOAc can regulate the Th1/Th2 immune reaction via up-regulating IL-2 and down-regulating IL-4 and IL-5. Moreover, ABE-EtOAc reduced the anti-OVA IgE production, increased IFN-γ secretion and decreased IL-4 and IL-5 secretion in OVA immunized BALB/c mice. The ABE-EtOAc affects allergic reaction through balances of Th1/Th2 immune responses. To explore the anti-allergic components, the ABE-EtOAc-40~100% EtOAc/Hex fraction was isolated. There are 22 compounds were isolated from adlay bran. Among them, 15 compounds were first isolated from the adlay including 12 flavonoids, tangeretin (FL1), new flavonoids (FL2), formononetin (FL3), davidigenin (FL4), homoeriodictyol (FL5), 6'', 5, 7-trihydroxy-4''-methoxyflavonone (FL6), isoliquiritigenin (FL8), liquiritigenin (FL9), 3,5,6,7,8,3'',4''-heptamethoxyflavone (FL10), 5,7,4''-trihydroxy-3''-methoxyflavone (FL11), 3,5,7,3'',4''-pentamethoxyflavone (FL12)and 3,5,7,4''-tetramethoxyflavone (FL13), and two chromones, 5-hydroxy-7-methoxychromone (C1), 5,7-dihydroxychromone (C2) and a phenolic ester, ethyl ferulate (PE1). In conclusion, various flavonoids were found in the active fraction of adlay bran. They are suggested to correlate with the allergic response of mast cell in early phase and the inflammatory reaction of macrophage in late phase. Moreover, ABE-EtOAc can balance the Th1/Th2 immune responses. As a consequence the ethanolic extracts of adlay bran strengthen the modulation of immune system and alleviate allergic symptoms.