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1
Earnshaw, Anthany Arthur Paul, and n/a. "The acquisition of major capital equipment by the Australian Department of Defence : a comparative analysis." University of Canberra. Administrative Studies, 1994. http://erl.canberra.edu.au./public/adt-AUC20060706.164636.
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The focus of this thesis is on the acquisition of major capital equipment within Australia's
defence system. For the purposes of this analysis, major capital equipment constitute
selected projects with a total value of at least $200 million.
The projects selected for examination are from each of the three arms of the military
service. These projects are: the Royal Australian Air Force's BLACKHAWK helicopters,
the Army's PERENTIE vehicles, and the Royal Australian Navy's Australian FFG-7
FRIGATES. These projects were chosen because they share similar planning and
management related characteristics. They represent substantial public sector investments.
The technology used in each of the systems is available 'off-the-shelf but the way in
which the systems were ultimately assembled and produced are uniquely Australian: this
adaptation and local innovation involved developmental work. Since each of these
projects is almost complete, a comprehensive analysis of the project has been possible.
The study of these particular projects provides the basis for a comparative analysis of the
acquisition of major defence projects, and facilitates the development of project planning
and management 'lessons'. Since current Australian public (and private) sector policies
seek to maximise the use of leading edge technology by adapting it to meet specific local
requirements; the examination of these three projects provides an objective determination
of the validity of such policies.
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Alcántara, Mondragón Viridiana. "Evaluación de una pradera de ryegrass perene (Lolium perenne) bajo pastoreo continuo por corderos en crecimiento y finalización en Primavera-Verano." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68549.
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La población humana mundial sigue aumentando con gran rapidez, en México para 2017 hay una población de 123.5 millones, y, de igual manera, se incrementa la demanda de productos pecuarios como la leche, carne y huevo; de tal forma que las empresas dedicadas a la agricultura y ganadería coinciden en la necesidad de lograr una mayor eficiencia productiva y rentabilidad económica; el caso de la ovinocultura no es la excepción; empero, esta actividad tiene la opción de producir a base de forrajes usados en condiciones de pastoreo, lo cual le permite disminuir los costos de producción, resultando esto en una gran ventaja sobre otras empresas como la avícola y porcina (Church et al., 2002).
El manejo agronómico de la pradera, así como el pastoreo animal, son aspectos fundamentales para explotar el potencial genético de las diferentes especies de gramíneas de clima templado como es el caso del ryegrass (Lolium perenne); sin embargo, en muchas ocasiones su desconocimiento ocasiona el fracaso de los sistemas de producción animal en pradera (Núñez et al., 1995).
Ofrecer y suministrar un forraje de buena calidad puede significar una mayor rentabilidad en la empresa ganadera; hay parámetros que determinan la calidad de los pastos, uno de ellos es su composición química, la cual se estima al practicar un análisis químico proximal del forraje, determinando el contenido de cenizas, fibra ácido detergente (FAD), fibra neutro detergente (FND), proteína cruda (PC), fibra cruda (FC), extracto etéreo (EE), extracto libre de nitrógeno (ELN), además del contenido de calcio, (Ca), fósforo (P), potasio (K), magnesio (Mg), y de los microelementos como manganeso (Mn), zinc (Zn), cobre (Cu), selenio (Se) y hierro (Fe) (Mc Donald et al., 1995).
La fracción de un alimento que, después de ser ingerida y digerida, no aparece en las heces fecales, debido a su desintegración y absorción, se denomina fracción digerida o digestible (Fondevila y Barrios, 2001).
La digestibilidad de la materia orgánica es un factor de suma importancia para determinar el valor nutritivo de un forraje, esa digestibilidad se modifica a medida que las plantas maduran con disminución de la proteína y aumento de la fracción fibrosa a base de los carbohidratos estructurales (Mc Donald et al., 1995). La digestibilidad de los forrajes puede variar dependiendo de factores asociados a los animales, y también según la especie vegetal, su edad y manejo agronómico (Bogdan, 1997).
El grado de digestibilidad de las plantas completas y de sus fracciones puede precisarse a través de métodos in vitro, uno de ellos es el método por producción de gas (Theodorou et al., 1994), en el cual el gas producido provee datos útiles sobre la digestión de las fracciones solubles e insolubles del alimento.
La evaluación de la pradera permite determinar la calidad nutritiva del forraje para aprovechar al máximo el material disponible a ser proporcionado a los animales en las mejores condiciones para su óptima producción (Duthil, 1989; Church et al., 2002).
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Liu, Jianyang. "Morphological and genetic variation within perennial ryegrass (Lolium perenne l.)." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127245394.
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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 123 p.; also includes graphics (some col.). Includes bibliographical references (p. 99-107). Available online via OhioLINK's ETD Center
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Cao, Mingshu. "Molecular cytogenetic analysis of genomes between Festuca mairei and Lolium perenne /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3012953.
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Chen, Caifu. "Molecular genome characterization and introgression in Lolium perenne and Festuca species /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9809676.
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Oliveira, Catarina Pereira. "Ação de polissacarídeos de Sarcocornia perennis em ratinhos." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/8324.
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Mestrado em Biologia Molecular e Celular<br>Os polissacarídeos são constituintes das plantas, podendo apresentar diversas propriedades, nomeadamente anti-tumorais, anti-virais, anti-fúngicas, anti-parasitárias e anti-bacterianas. Na literatura consultada, nenhuma reportou para as potencialidades de S. perennis subsp. perennis. Como tal, o presente trabalho teve como objetivo avaliar as características dessa planta, incidindo na sua composição química e nos seus efeitos em vários órgãos e no sistema imunitário de ratinhos. Neste trabalho também se pretendeu avaliar os seus efeitos protetores após a agressão de CCl4. Para tal, realizaram-se análises histopatológicas, bioquímicas e hematológicas, comparando-os com os grupos controlo, negativo e positivo (CCl4). Foram usadas duas doses de extrato de polissacarídeos (400 mg/kg e 800 mg/kg), as quais foram, administradas aos ratinhos, por via oral, dissolvidos em água.
Observaram-se alterações apenas nos órgãos reprodutores masculinos. Nos restantes órgãos em estudo constatou-se uma ténue proteção no rim e baço. Verificou-se, através da análise histológica e da determinação de enzimas hepáticas, que os efeitos do CCl4 no fígado, quando administrado a posteriori, foram atenuados pelo extrato de polissacarídeos. Este mostrou-se eficaz ao nível do sistema imunitário, tal como demonstrado pela análise histológica do baço e pela contagem diferencial de leucócitos no sangue de ratinho.
Conclui-se assim que os polissacarídeos presentes em S. perennis subsp. perennis, maioritariamente polissacarídeos pécticos, apresentaram efeitos protetores para o fígado, baço e rim, e ainda imunoestimuladores. As potencialidades desta planta deverão ser objeto de estudos futuros.<br>Polysaccharides are constituents of plants with different biological activities, including anti-tumor, anti-viral, anti-fungal, anti-parasitic and anti-bacterial features.
In literature, no potentials of applications of S. perennis subsp. Perennis were reported. For this reason, this study aimed to determine some features of this plant, focusing on the chemical composition, and effects on some organs and immune system of mice. This work also aimed to evaluate the protective effects of this plant after CCl4 exposure. Histopathological, biochemical and hematological assays were conducted comparing them with control groups, negative and positive (CCl4). Two doses of polysaccharides extract were orally dissolved in water and administered in mice (400 mg/kg and 800 mg/kg).
Several changes were observed on male reproductive organs. However, a slight protection was observed in other organs, such as kidney and spleen. It was verified. The effects of CCl4 in the liver when administered a posteriori, were attenuated by the polysaccharides extract, as confirmed by histological analysis and determination of liver enzymes. This proved to be effective at the level of the immune system, as revealed by histology of the spleen and the leukocyte count in the blood of mice.
It is concluded that the polysaccharides present in S. perennis subsp. perennis, mainly pectic polysaccharides, demonstrated protective effects to the liver, spleen and kidney, and also immunostimulatory activity. The potential of this plant should be investigated in further studies, through different assays.
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Do-Huu, Dong. "Perennite et developpement de la personnalite politique dai-vietnamienne." Nantes, 1986. http://www.theses.fr/1986NANT4006.
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L'histoire et le patrimoine national du viet-nam pluri-millenaire (qualifie traditionnellement par nos ancetres de "dai" ou "grand") attestent la puissance morale et l'esprit dialectique de ce peuple tenace. Traversant ainsi la nuit des temps (a partir de 2879 avant j. -c. ) et guide par la "pensee mythique ancestrale", le peuple dai-vietnamien arrive toujours a conjuguer les antinomies apparemment insolubles: vie ou mort devant la nature inclemente et les envahisseurs (1. 000 ans de domination chinoise: 111 av. J. -c. A 938 ap. J. -c. , 3 invasions mongoles au xiiie siecle), servilite ou independance vis-a-vis des cultures differentes ou opposees, rejet ou accueil des ethnies entrant en contact avec lui, stagnation ou developpement, tradition ou modernite, repli sur soi ou ouverture, etc. , face a un monde qui bouge sans arret. En tout cas, tous ces dilemmes et oppositions ont ete "fondus" dans le creuset du viet-nam eternel pour son plus grand enrichissement. . . A la lumiere de la science politique, on constate que l'indestructibilite de ce peuple provient surtout de ses pouvoirs de synthese, de renouvellement et de son temperament a la fois idealiste et realiste. Tout ceci s'est cristallise en une dynamique toujours en devenir: la pensee-action dai-vietnamienne. . . Le viet-nam traditionnel a notamment assimile la quintessence de l'asie a travers l'inde (bouddhisme) et la chine (confucianisme & taoisme). La tache la plus ardue du viet-nam moderne consiste a effectuer la synthese entre les 2 faces opposees de l'occident: le liberalisme et le marxisme. Apres avoir utilise magistralement le marxisme-leninisme comme complement de son genie pour vaincre le colonialisme francais (1954) et le capitalisme americain (1975), le peuple dai-vietnamien continue a s'affirmer dans les epreuves, en attendant de se servir toujours dialectiquement du liberalisme afin de maitriser a son tour le communisme sovietique. . . Dans sa quete permanente de perfection, ce peuple propose egalement a l'univers une sorte de sagesse multiforme: la do-ambivalence, synthese des valeurs opposees. .<br>THE HISTORY AND THE NATIONAL INHERITANCE OF VIETNAM (TRADITIONALLY CALLED "DAI" OR "LARGE" BY OUR FOREFATHERS) VOUCH FOR THE MORAL strength AND THE EDUCATIONAL FRAME OF MIND OF THIS TENACIOUS PEOPLE. WHILE IT CROSSED THE MISTS OF TIME (FROM 2879 B. C. ONWARDS) GUIDED BY THE "ANCESTRAL MYTHICAL THOUGHT", THE DAI-VIETNAMESE PEOPLE HAS ALWAYS SUCCEEDED IN MASTERING APPARENTLY UNSOLVABLE ANTINOMIES: LIFE OR DEATH WHEN FACED WITH INCLEMENT NATURE AND INVADERS (1000 YEARS CHINESE DOMINION: 111 B. C. UNTIL 938 A. D. , 3 MONGOLIAN INVASIONS IN THE XIII TH CENTURY), SERVILITY OR INDEPENDANCE TOWARDS DIFFERENT CULTURES, REJECTION OR GREETING OF THE ETHNIC GROUPS WHICH MADE CONTACT WITH IT, STAGNATION OR DEVELOPMENT, TRADITION OR MODERNITY, WITH DRAWAL INTO ITSELF OR OVERTURE, ETC. , IN A WORLD ALWAYS ON THE MOVE. HOWEVER, ALL THESE OPPOSITIONS HAVE BEEN FUSING TOGETHER IN THE CRUCIBLE OF THE EVERLASTING DAI-VIET-NAM TO SERVE ITS ENRICHMENT. . . - IN THE LIGHT OF POLITICAL SCIENCE, ONE REALIZES THAT IF THIS PEOPLE CANNOT BE DESTROYED, IT IS BE- CAUSE IT HAS A POWER OF SYNTHESIS, AND A SPECIFIC NATURE, IDEALISTIC AND REALISTIC AT THE SAME TIME. ALL THIS HAS CRYSTALLIZED IN A PERMANENT- LY IN THE MAKING PROCESS: "DAI-VIETNAMESE THOUGHT-ACTION", BASE OF THE WISDOM "DO-AMBIVALENCE" (SYNTHESIS OF OPPOSED VALUES). . . TRADITIONAL VIET-NAM HAS NOTABLY ASSIMILATED THE QUINTESSENCE OF ASIA THROUGH INDIA (BUDDHISM) AND CHINA (CONFUCIANISM & TAOISM). THE MOST STRENUOUS TASK LEFT FOR MODERN VIET-NAM CONSISTS IN ACHIEVING A SYNTHESIS BETWEEN THE 2 OPPOSED ASPECTS OF WESTERN CIVILIZATION: LIBERALISM AND MARXISM. AFTER HAVING BRILLIANTLY USED MARXISM-LENINISM AS A COMPLEMENT TO ITS GENIUS IN ORDER TO OVERCOME FRENCH COLONIALISM (1954) AND AMERICAN CAPITALISM (1975), THE DAI-VIETNAMESE PEOPLE HAS KEPT STRENGTHENING ITS ORIGINALI- TY AT A TIME OF HARDSHIPS, WAITING FOR A CHANCE TO USE LIBERALISM DIA- LECTICALLY IN ORDER TO OVERCOME SOVIET COMMUNISM. .
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Pinto, Joana Sofia Ramos de Oliveira. "Ação do extrato etanólico de Sarcocornia perennis em ratinhos." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/8313.
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Mestrado em Biologia Molecular e Celular<br>As plantas têm tido um crescente interesse na comunidade científica, devido aos compostos fisiologicamente ativos que as tornam potenciais agentes terapêuticos. Numa primeira fase deste estudo, o extrato etanólico (EE) de S. perennis
subsp. perennis foi submetido a uma análise de açúcares e de compostos fenólicos, procedendo-se ainda à avaliação da atividade antioxidante. O
principal objetivo do presente trabalho foi avaliar os efeitos desse EE em ratinhos, expostos e não expostos ao CCl4. Para tal, foi realizada uma análise histopatológica do fígado, rim, baço, testículos e epidídimo e uma avaliação bioquímica da função hepática. Foram utilizados 30 ratinhos machos da estirpe ICR-CD1, divididos em 6 grupos (n=5): um grupo controlo negativo ao qual foi fornecida apenas água; um grupo (controlo positivo) em que os ratinhos foram administrados com uma injeção de 0,25 mL de CCl4 em azeite, por via
subcutânea, na concentração de 0,5 mL/Kg, 24 horas antes do sacrifício; dois grupos ao qual se forneceu EE liofilizado, diluído na água, nas concentrações de 0,5 mg/mL/dia e 2,0 mg/mL/dia e dois grupos fornecidos com EE liofilizado nas mesmas concentrações e ainda administrados com CCL4 do mesmo modo realizado para o controlo positivo. A experiência teve uma duração de 30 dias. Os resultados demonstraram a presença de compostos com forte atividade antioxidante (24,30±2,43 mg/g de equivalentes em ácido gálico e 12,03±2,06 mg/g de equivalentes em trolox) no EE. O extrato demonstrou alguns efeitos protetores em animais submetidos ao CCl4, diminuindo o número de lesões histológicas no fígado e baço e o peso dos rins. Estes efeitos poderão estar relacionados com a capacidade antioxidante dos compostos presentes. Entretanto, o EE per se provocou alterações histológicas, principalmente ao
nível do sistema reprodutor masculino, sugerindo que o extrato poderá conter uma fração com efeito tóxico. Pela análise dos valores da AST e ALT, não foi possível avaliar o possível efeito protetor do EE, dada a variabilidade dos valores encontrados. Observaram-se valores extremamente baixos para estas enzimas em ratinhos expostos ao CCl4, principalmente no grupo controlo positivo, o que contraria as informações da literatura que relatam o aumento dos seus níveis quando os hepatócitos são danificados. Estes resultados poderão indicar que a severidade dos danos causados nos tecidos afeta a
atividade destas enzimas. Conclui-se que o EE possui efeitos protetores contra os efeitos tóxicos induzidos pelo CCl4, principalmente no fígado e baço. Já o EE per se,
demonstra potenciais efeitos tóxicos principalmente ao nível do sistema reprodutor. Futuros trabalhos são necessários para melhor compreender os efeitos observados do EE de S.perennis subsp. perennis.<br>Plants have been a growing interest in the scientific community due to their physiologically active compounds, making them potential therapeutic agents. In the first phase of this study, the ethanolic extract (EE) of S. perennis
subsp. perennis was analyzed for sugars and phenolic compounds, as well as
antioxidant activity. The main aim of this work was to evaluate the effects of the EE in mice exposed and non exposed to CCl4. A histopathological analysis of liver, kidney, spleen, testis and epididymis and a biochemical evaluation of liver function was performed. Thirty male mice of ICR-CD1 strain were divided into 6 groups (n = 5): a negative control group which was given only tap water, a positive control group in which mice were administered with an injection of 0.25 mL of CCl4 in olive oil, subcutaneously, at 0.5 mL/kg, 24 hours before sacrifice; two groups were provided with lyophilized EE, diluted in water, at the concentrations of 0.5 mg /mL/ day and 2.0 mg / mL / day and two groups were provided with lyophilized EE at the same concentrations and administered with CCl4 in the same way that was done for the positive control. The experiment lasted 30 days. Some compounds with strong antioxidant activity (24.30 ± 2.43 mg/g of gallic acid equivalents and 12.03 ± 2.06 mg /g of trolox equivalents) were found in EE. The extract evidenced protective effects on mice exposed to CCl4,
decreasing the amount of lesions in the liver and spleen and reducing the weight of the kidneys. These effects may be related to the ability of antioxidant compounds. However, the EE per se caused histological changes, especially in the reproductive system, suggesting that the extract may contain a toxic fraction. It was not possible to evaluate the possible protective effects of EE, due to the variability of AST and ALT values. Low values for these enzymes in mice exposed to CCl4, were found, especially in the positive control group, which contradicts the information reported in the literature, where an increase in their levels appears when hepatocytes are damaged. These results may indicate that the severity of tissue damage affected the activity of these enzymes. It is concluded that the EE has protective effects against CCl4, mainly in the liver and spleen. The EE per se, demonstrates potential toxic effects mainly at the reproductive system. Future studies are needed to better understand the observed effects of EE
of S.perennis subsp. perennis.
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Barrett, S. K. "Growth regulators in Lolium perenne grown for seed." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378463.
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Huang, Ji-Wei. "Wear tolerance in perennial ryegrass (Lolium perenne L.)." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389474.
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Meharg, Andrew Alexander. "Factors affecting rhizosphere carbon-flow in Lolium perenne." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU031803.
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The dynamics of root carbon have been studied on a limited number of plants under a limited range of environmental conditions. This is particularly true of temperate pasture grasses. It was proposed to investigate rhizosphere carbon flow within Lolium perenne, to determine environmental factors affecting root exudation and root respiration. A number of microcosms were designed in which ryegrass could be pulse labelled with 14C-CO2, and the fate of the label determined within a plant-soil system. A wide range of factors were found to affect the distribution of carbon within the plant and soil under laboratory conditions. These factors include plant stage of development, micro-organisms, temperature, soil pH, soil water stress and soil anaerobism. A field experiment was carried out to estimate rhizosphere carbon flow under 'natural' conditions and to determine if the laboratory studies could be related to field conditions. Results showed that rhizosphere carbon flow varied greatly depending on environmental conditions. It was proposed that the major loss of newly photoassimilated carbon was dominated by root respiration rather than by root exudation. Inoculation with micro-organisms affected carbon loss from plant roots as exudates. The pattern of carbon distribution within the plant and rhizosphere varied greatly depending on the inoculant.
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Wilson, Rachel Erin. "The Genetic Basis for Seed Coat Polymorphisms In Lupinus Perennis." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1566754995812035.
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Sequeira, Filipa Isabel Dias Correia. "O perene e o efémero na reabilitação." Master's thesis, Universidade de Lisboa. Faculdade de Arquitetura, 2015. http://hdl.handle.net/10400.5/12461.
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Dissertação de Mestrado em Arquitetura, com a especialização em Interiores e Reabilitação do Edificado apresentada na Faculdade de Arquitetura da Universidade de Lisboa para obtenção do grau de Mestre.<br>Luz, Cor e Matéria são os conceitos base da concepção do projecto. É através deles que a análise teórica e a criação projectual se desenvolvem. Estes apresentam características perenes e efémeras, e é a pensar nas relações que se estabelecem entre estes conceitos que se pretende chegar a uma interessante solução de intervenção. E são estes os conceitos aqui aplicados que suportam toda a fundamentação projectual.
O objecto de estudo é um antigo palacete, localizado no largo do Intendente, em Lisboa. Aí, procura-se intervir num palacete cujo interior foi demolido, restando apenas a fachada principal e uma fachada lateral. A nova intervenção pretende criar um novo edifício tendo em consideração a utilização dos conceitos de luz, cor, matéria reflectindo as suas propriedades perenes e efémeras. É com estas propriedades em consideração que se pretende que o edifício projectado possa ter diferentes usos e que possa ser adaptado às diferentes necessidades dos utilizadores. O palacete, originalmente pombalino, é concebido com um programa de habitação temporária, especializado para trabalhadores executivos. Procura-se assim um programa diferenciado com unidades de alojamento temporário, espaços de trabalho, reuniões, conferências, um auditório, um restaurante e um lounge de apoio aos espaços destinados ao uso público e ao uso privado.
O projecto é desenvolvido na procura de um equilíbrio entre a pré-existência (fachada frontal) e a adição no novo bloco edificado que se encontra escondido por detrás desta fachada. É através dos elementos luz, cor e matéria que se define o espaço. A matéria foi a que obteve maior notoriedade na concepção deste projecto, uma vez que é nela que assentam os pressupostos do problema, quer seja através da cor dos materiais, como nas suas propriedade perenes e efémeras para a criação dos espaços.<br>ABSTRACT: Light, Colour and Matter are the basic concepts of project designing. It is through them that the theoretical analysis and the project creation develops. These feature perennial and ephemeral characteristics, and is thinking about the relationships established between these concepts that aims to reach an interesting intervention solution. And these are the concepts applied here to support all project-basis.
The object of study is a palace, located in Largo do Intendente in Lisbon. There, it seeks to intervene in a palace whose interior was gutted, leaving only the main facade and a side façade. The new intervention aims to create a new building taking into account the use of the concepts of light, colour, matter reflecting their perennial and ephemeral properties. With these properties in mind that it is intended to plan a building that may have different uses and can be adapted to the different needs of users. The palace, originally from the pombalino time, is designed with a temporary housing program for executives’ specialized workers. So it is looking for a unique program with temporary housing units, workspaces, meetings, conferences, an auditorium, a restaurant and a lounge to support spaces for public use and private use.
The project is developed in the search for a balance between the pre-existence (front facade) and adding the new built block that is hidden behind this facade. It is through the elements, light, colour and matter that the space is defined. The matter was the one with greater renown in the design of this project, since it is based on it that the assumptions of the problem, whether through the colour of materials and in its perennial and ephemeral property for the creation of spaces.
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Kavanová, Monika. "Leaf growth regulation in Lolium perenne under nutrient stress." [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/613553/document.pdf.
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Will, Jacqueline Ann Kennedy. "Genome analysis in Lolium." Thesis, Aberystwyth University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344086.
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Bushoven, John T. "The role of nitrate and carbohydrates in modulating the partitioning of nitrate assimilation between leaves and roots in perennial ryegrass (Lolium perenne L.) /." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3112113.
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Andersson, Tobias. "Den tidlösa sufismen : Om philosophia perennis föreställningar om sufism och islam." Thesis, Linnéuniversitetet, Institutionen för kulturvetenskaper, KV, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-10166.
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Det västerländska intresset för sufism har under 1900-talet varit stort, liksom antalet böcker som har publicerats rörande ämnet, både inom och utanför den akademiska världen. Samtidigt har en fascination för islams esoteriska dimensioner kunnat påträffas bland flera konstnärer, poeter och intellektuella, vilka inte sällan varit befryndade med philosophia perennis och dess läror, som både inom och utanför de akademiska sammanhangen således har utövat ett visst inflytande. Följande studie inriktas dock på de mest framstående och uttalade företrädarna för philosophia perennis som under 1900-talet dragits till sufismen, med fokus på deras föreställningar och tolkningar av sufism och islam. Studiens syfte är att genom en textkritisk och idéhistorisk metod analysera kvalitativt utvalda skrifter av perennialister som ger uttryck för särskilda föreställningar och tolkningar av sufism genom att relatera dessa till teorier om orientalism, occidentalism, globalisering och modernitet. Detta utreds genom problemformuleringarna: Hur framställs och tolkas sufismen av företrädare för philosophia perennis? Varför framställs sufismen så? Vad finner företrädarna tilltalande i islam och sufism? Resultaten visar att perennialisterna anspelar på och använder de orientalistiska och occidentalistiska föreställningar som finns i både öst och väst vid presentationerna av islam och sufism, bland annat för att kritisera moderniteten och definiera sina egna ståndpunkter. Dessutom pekar resultaten vidare på att perennialismen både närts och influerats av modernitens allt mer påtagliga globalisering, även om de ofta reagerar polemiskt emot den. Utan att reducera 1900-talets philosophia perennis till enbart en anti-modernistisk idéströmning, fokuserar studien på dess relation till modernitet, globalisering, orientalism och occidentalism, enligt syftet att belysa perennialismens föreställningar om sufism, varför just islam tilltalar företrädarna samt vilka särskilda implikationer ovan nämnda faktorer genererar i deras föreställningar och tolkningar av sufism.
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Meek, Haley. "Seed Coat Pigment Variation and UV Stress Tolerance in Lupinus perennis." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1542386060563396.
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Vaidergorn, Izaak. "(Ar)risc(ar) : a perene alquimia do abrigar." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284893.
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Orientador: Ernesto Giovanni Boccara<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes<br>Made available in DSpace on 2018-08-03T18:50:12Z (GMT). No. of bitstreams: 1
Vaidergorn_Izaak_M.pdf: 55892175 bytes, checksum: 11c8251a19420eb1fded7b31817da6a6 (MD5)
Previous issue date: 2003<br>Resumo: Vivemos a era da anestésica. O espaço caótico, a estética alienante, a hipertextualidade tornaram o homem des-abrigado, simbolicamente. Abrigá-lo significa permiti-lo que habite novamente suas idéias e seus sonhos estesicamente, com sentimento, recuperando dessa forma seu arquétipo ancestral de (AR)riscar. Viver e fazer é sempre um risco<br>Abstract: We lived the era of anaesthesia. The chaotic space, the alienating aesthetics, the hypertextuality turned the men uncovered, un-sheltered. To shelter him again means allow him to inhabts their ideas and their dreams recovering in his ancestral way the archetype of risk. Live and do is always a risk<br>Mestrado<br>Mestre em Artes
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Manzanares, Chloé. "Genetics of self-incompatibility in perennial ryegrass (Lolium perenne L.)." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4280/.
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Self-incompatibility (SI) prevents pollination by “self” pollen and promotes outbreeding. SI is a widespread mechanism among angiosperms. Grass SI is known to be controlled by two loci, S and Z, mapped in linkage group 1 and 2 respectively but the mechanism remains elusive. SI in perennial ryegrass (Lolium perenne L.) is studied at the gene level for the S-locus. Using a fine-mapping approach, followed by the sequencing of the genomic S-locus region and the transcripts from pollen and stigma, the project identified four stigma S-candidate genes and potentially six pollen S-candidate genes. Moreover, using closely linked markers, the allelic diversity in a breeding population was assessed for both S and Z. This assay demonstrated that allelic diversity is maintained in a half-sib family recurrent selection programme and that even if the SI genes are unknown, it is possible to predict their genotypes. Finally, self-compatibility has been reported in many grasses. Using self-compatible perennial ryegrass populations, two additional loci, F and T, have been investigated, by a mapping approach as well as observation of self-pollination under the microscope. For both loci, a distortion segregation was observed on linkage group 3 (F) and 5 (T) and initial marker recombination maps were created.
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Liu, Jianyang. "Morpholotical and genetic variation within perennial ryegrass (lylium perenne l.)." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1127245394.
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Araneda, Calderón Mariana Alejandra. "Comparación estacional del almacenaje de carbono total y carbono orgánico en tres cultivares de ballica perenne (Lolium perenne L.) y su relación con la fotosínteis." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/150860.
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Memoria para optar al Título Profesional de Ingeniera Agrónoma<br>Las emisiones de dióxido de carbono (CO2) pueden conducir a un aumento de la
temperatura ambiental global e influir en el cambio climático, lo cual se ha convertido en
un problema de discusión global. Los céspedes urbanos pueden mitigar estos efectos, ya
que capturan el CO2 mediante el almacenamiento de carbono en los sustratos y la
vegetación. El objetivo del presente estudio fue comparar estacionalmente la habilidad de
secuestro de carbono y los parámetros fotosintéticos de tres cultivares de ballica perenne
(Lolium perenne L.): ‘Derby Xtreme’, ‘Nobility’ y ‘Premier II’ y un suelo desnudo en la
zona central de Chile. Se realizaron dos muestreos de suelo de los tres cultivares a tres
profundidades (0–10, 10–20 y 20–30 cm), en la primavera de 2011 y en el otoño de 2012.
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Plenzler, Michael A. "Seedling Recruitment and Establishment of Lupinus perennis in a Mixed-Management Landscape." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1214238925.
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Nurjaya, I. Gusti Made Oka. "Studies on the competitive ability of white clover (Trifolium repens L.) in mixtures with perennial ryegrass (Lolium perenne L.) : the importance of non-structural carbohydrate reserves and plant traits /." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09APSP/09apspi11.pdf.
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Bazely, Dawn. "Foraging behaviour of sheep (Ovis aries L.) grazing on swards of perennial ryegrass (Lolium perenne L.)." Thesis, University of Oxford, 1988. http://ora.ox.ac.uk/objects/uuid:d48c2508-a774-43b4-805b-9470971bd236.
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The grazing behaviour and diet selection of a vertebrate herbivore, the domestic sheep (ovis aries L.), feeding in patchy perennial ryegrass (Lolium perenne L.) monocultures was investigated. Heterogeneity or patchiness was created by manipulating (1) the nutritional content of ryegrass, (2) parameters of sward structure e.g. sward height, pseudostem and lamina length, and tiller density, and (3) brightness of ryegrass relative to the background sward. Patches were either fertilised turves transplanted into paddock swards or were created in situ by local fertilisation, trimming etc. The background sward was low in nitrogen (<1.0%N dry weight) compared with average ryegrass leys found on farms in British lowland areas. Sheep preferred to graze in transplanted patches of ryegrass. These patches were structurally similar to the background sward, but were higher in nitrogen content and digestibility as a result of fertilisation. Thus, sheep actively selected more nutritious ryegrass. There was a significant quantitative relationship between brightness and the nitrogen and water soluble carbohydrate content of ryegrass. Darker green ryegrass had a higher nitrogen content and lower water soluble carbohydrate content than lighter green ryegrass. It is suggested that sheep learned to use brightness as a cue in intra-specific forage selection. They had a high preference for short, dark green patches of similar height to the lighter green, background sward. Sheep also preferred to graze in tall patches of ryegrass (>10 cm taller than the background sward) regardless of their nutritional content or brightness relative to the background sward. It is likely that sheep use a multiplicity of physical cues associated with perennial ryegrass in diet selection. The interaction between structural and sward parameters and nutrition content of forage in influencing diet selection requires further investigation. In further experiments, an optimal foraging model, the marginal value theorem was used to make predictions about the behaviour of sheep grazing in monocultures containing highly preferred transplanted patches of tall, fertilised ryegrass. By manipulating the cost of travel between these good ryegrass patches and by detailed measurements of intake within patches by individual sheep, I was able to make quantitative predictions about the time spent grazing in each patch. Travel time and costs were increased by moving good patches further apart and by hobbling sheep to slow down their speed of movement. As predicted by the marginal value theorem, average time spent in a patch was positively correlated with average travel time between patches. For two sheep, the predicted and observed times spent in patches were statistically similar at low travel times, while at higher travel times, observed times were greater than predicted. For a third sheep, all observed times were greater than predicted. Thus overall, there was not a good quantitative fit between the model and the observed behaviour. While incorporation of the difference in the energetic cost of travel relative to that of grazing in a good patch into the model resulted in an increase in predicted optimal patch residence times, the fit between predicted and observed values was not significantly improved. Reasons for this difference between observed and predicted patch residence times are discussed. However, these experiments demonstrated that patch-use foraging models may be more useful than prey models in investigating grazing behaviour of vertebrate herbivores, and that travel time between patches of forage is a previously unidentified constraint of sheep grazing behaviour.
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Wiltshire, J. J. J. "The use of the growth regulator triapenthenol in seed crops of Lolium perenne L." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233613.
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Damrongkool, Prapassorn. "Sequence and distribution of the Neotyphodium lolli peptide synthetase gene lpsA." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2927.
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Thesis (Ph. D.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains ix, 134 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.
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Kraus, Edwin. "Yield and respiration of populations of Lolium perenne as affected by plant growth conditions = Opbrengst en ademhaling van populaties van Lolium perenne onder verschillende kweek kondities /." [S.l. : s.n.], 1995. http://www.gbv.de/dms/bs/toc/189735295.pdf.
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Raikar, Sanjeev Vencu. "Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20080214.105406/.
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Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression
by Sanjeev V. Raikar
Lolium perenne is one of the most important forage crops globally and in New Zealand. Lotus corniculatus is a dicotyledonous forage that contains valuable traits such as high levels of condensed tannins, increased digestibility, and high nitrogen fixing abilities. However, conventional breeding between these two forage crops is impossible due to their markedly different taxonomic origin. Protoplast fusion (somatic hybridisation) provides an opportunity for gene introgression between these two species. This thesis describes the somatic hybridisation, the regeneration and the molecular analysis of the putative somatic hybrid plants obtained between L. perenne and L. corniculatus.
Callus and cell suspensions of different cultivars of L. perenne were established from immature embryos and plants were regenerated from the callus. Of the 10 cultivars screened, cultivars Bronsyn and Canon had the highest percentage of callus induction at 36% each on 5 mg/L 2,4-D. Removal of the palea and lemma which form the seed coat was found to increase callus induction ability of the embryos. Plant regeneration from the callus was achieved when the callus was plated on LS medium supplemented with plant growth regulators at different concentrations. Variable responses to shoot regeneration was observed between the different cultivars with the cv Kingston having the lowest frequency of shoot formation (12%).
Different factors affecting the protoplast isolation of L. perenne were investigated. The highest protoplast yield of 10×106 g-1FW was obtained when cell suspensions were used as the tissue source, with enzyme combination A (Cellulase Onozuka RS 2%, Macerozyme R-10 1%, Driselase 0.5%, Pectolyase 0.2%), for 6 h incubation period in 0.6 M mannitol. Development of microcolonies was only achieved when protoplasts were plated on nitrocellulose membrane with a L. perenne feeder layer on PEL medium. All the shoots regenerated from the protoplast-derived calli were albino shoots.
The highest protoplast yield (7×106 g-1FW) of L. corniculatus was achieved from cotyledons also with enzyme combination A (Cellulase Onozuka RS 2%, Macerozyme R-10 1%, Driselase 0.5%, Pectolyase 0.2%), for 6 h incubation period in 0.6 M mannitol. The highest plating efficiency for L. corniculatus of 1.57 % was achieved when protoplasts were plated on nitrocellulose membrane with a L. perenne feeder layer on PEL medium. The highest frequency of shoot regeneration (46%) was achieved when calli were plated on LS medium with NAA (0.1 mg/L) and BA (0.1 mg/L).
Protoplast fusion between L. perenne and L. corniculatus was performed using the asymmetric somatic hybridisation technique using PEG as the fusogen. L. perenne protoplasts were treated with 0.1 mM IOA for 15 min and L. corniculatus protoplasts were treated with UV at 0.15 J/cm2 for 10 min. Various parameters affecting the fusion percentage were investigated. Successful fusions were obtained when the fusions were conducted on a plastic surface with 35% PEG (3350 MW) for 25 min duration, followed by 100 mM calcium chloride treatment for 25 min. A total of 14 putative fusion colonies were recovered. Shoots were regenerated from 8 fusion colonies. Unexpectedly, the regenerated putative hybrid plants resembled L. corniculatus plants.
The flow cytometric profile of the putative somatic hybrids resembled that of L. corniculatus. Molecular analysis using SD-AFLP, SCARs and Lolium specific chloroplast microsatellite markers suggest that the putative somatic hybrids could be L. corniculatus escapes from the asymmetric protoplast fusion process. This thesis details a novel Whole Genome Amplification technique for plants using Strand Displacement Amplification technique.
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Raikar, S. V. "Protoplast fusion of Lolium perenne and Lotus corniculatus for gene introgression." Diss., Lincoln University, 2007. http://hdl.handle.net/10182/301.
Full textAbstract:
Lolium perenne is one of the most important forage crops globally and in New Zealand. Lotus corniculatus is a dicotyledonous forage that contains valuable traits such as high levels of condensed tannins, increased digestibility, and high nitrogen fixing abilities. However, conventional breeding between these two forage crops is impossible due to their markedly different taxonomic origin. Protoplast fusion (somatic hybridisation) provides an opportunity for gene introgression between these two species. This thesis describes the somatic hybridisation, the regeneration and the molecular analysis of the putative somatic hybrid plants obtained between L. perenne and L. corniculatus. Callus and cell suspensions of different cultivars of L. perenne were established from immature embryos and plants were regenerated from the callus. Of the 10 cultivars screened, cultivars Bronsyn and Canon had the highest percentage of callus induction at 36% each on 5 mg/L 2,4-D. Removal of the palea and lemma which form the seed coat was found to increase callus induction ability of the embryos. Plant regeneration from the callus was achieved when the callus was plated on LS medium supplemented with plant growth regulators at different concentrations. Variable responses to shoot regeneration was observed between the different cultivars with the cv Kingston having the lowest frequency of shoot formation (12%). Different factors affecting the protoplast isolation of L. perenne were investigated. The highest protoplast yield of 10×10⁶ g⁻¹FW was obtained when cell suspensions were used as the tissue source, with enzyme combination 'A' (Cellulase Onozuka RS 2%, Macerozyme R-10 1%, Driselase 0.5%, Pectolyase 0.2%), for 6 h incubation period in 0.6 M mannitol. Development of microcolonies was only achieved when protoplasts were plated on nitrocellulose membrane with a L. perenne feeder layer on PEL medium. All the shoots regenerated from the protoplast-derived calli were albino shoots. The highest protoplast yield (7×10⁶ g⁻¹FW) of L. corniculatus was achieved from cotyledons also with enzyme combination 'A' (Cellulase Onozuka RS 2%, Macerozyme R-10 1%, Driselase 0.5%, Pectolyase 0.2%), for 6 h incubation period in 0.6 M mannitol. The highest plating efficiency for L. corniculatus of 1.57 % was achieved when protoplasts were plated on nitrocellulose membrane with a L. perenne feeder layer on PEL medium. The highest frequency of shoot regeneration (46%) was achieved when calli were plated on LS medium with NAA (0.1 mg/L) and BA (0.1 mg/L). Protoplast fusion between L. perenne and L. corniculatus was performed using the asymmetric somatic hybridisation technique using PEG as the fusogen. L. perenne protoplasts were treated with 0.1 mM IOA for 15 min and L. corniculatus protoplasts were treated with UV at 0.15 J/cm² for 10 min. Various parameters affecting the fusion percentage were investigated. Successful fusions were obtained when the fusions were conducted on a plastic surface with 35% PEG (3350 MW) for 25 min duration, followed by 100 mM calcium chloride treatment for 25 min. A total of 14 putative fusion colonies were recovered. Shoots were regenerated from 8 fusion colonies. Unexpectedly, the regenerated putative hybrid plants resembled L. corniculatus plants. The flow cytometric profile of the putative somatic hybrids resembled that of L. corniculatus. Molecular analysis using SD-AFLP, SCARs and Lolium specific chloroplast microsatellite markers suggest that the putative somatic hybrids could be L. corniculatus escapes from the asymmetric protoplast fusion process. This thesis details a novel Whole Genome Amplification technique for plants using Strand Displacement Amplification technique.
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Jupp, A. P. "Some effects of severe drought on the roots of Lolium perenne." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375027.
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Yang, Bicheng. "Investigations of self-incompatibility (SI) in perennial ryegrass (Lolium perenne L.)." Thesis, University of Birmingham, 2009. http://etheses.bham.ac.uk//id/eprint/1097/.
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Perennial ryegrass (Lolium perenne L.) is one of the most economically and environmentally important grass species for the temperate zone. It maintains effective self-incompatibility (SI), which promotes outbreeding as well as limits the efficient production of inbred lines and hybrids. SI in L. perenne is controlled by the S and Z loci, mapping to linkage groups 1 and 2, respectively. None of the gene products has been identified so far. Comparative mapping has identified regions on rice chromosomes 5 (R5) and 4 with synteny to regions of L. perenne genome containing the S and Z loci, respectively. Markers were developed from the syntenic rice genomic region to refine the S and Z maps. The closest flanking markers had a map distance of 2 cM from S and 0.2 cM from Z. SI cDNA libraries were developed from in-vitro pollinated stigma subtracted with unpollinated stigma to identify SI components and SI response related genes. Through a BLAST search, candidates identified from the SI libraries that were orthologous to sequences on the S and Z flanking regions on rice R4 and R5 were the prime candidate SI genes. Altogether ten SI candidate genes were identified with incompatible response associated differentially expression pattern: a rapid increase in expression within two minutes after pollen-stigma contact and reaching a maximum between 2-10 minutes, implying their roles in the SI response. Attempts were carried out to determine the linkage relationships between the identified candidates and the S or Z loci. Large fine scale mapping populations were developed individually for the S and Z loci to generate high resolution maps of S and Z towards map-based cloning. Tightly linked markers were identified mapping at a distance of 1.4 cM from S and 0.9 cM from Z. The studies performed in this project have implications on both the underlying genetic control and the associated biochemical responses involved in L. perenne SI. The closely linked markers for S or Z could be applied in future marker assisted selection breeding programmes and map-based cloning.
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Foito, Alexandre. "A metabolomics-based approach to study abiotic stress in Lolium perenne." Thesis, University of Dundee, 2010. https://discovery.dundee.ac.uk/en/studentTheses/897810b2-4b52-43a8-a687-d21fef3a6d1e.
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In the United Kingdom and Ireland, a major percentage of fertilized agricultural area is devoted to grasslands, which helps to support the associated milk and beef production industries. In temperate grasslands, perennial ryegrass (L. perenne) is the major forage grass and this species is particularly suitable as a forage grass due to its high yield and digestibility, when compared with other species. However, perennial ryegrass is not well adapted to abiotic stress conditions which are likely to occur in its natural environment. Some of the abiotic stress factors which have significant impacts on plant growth and development include water and nutrient availability. Therefore, this project set out to unravel some of the mechanisms involved in the adaptation of perennial ryegrass to limited water, phosphorous and nitrogen. In order to understand the metabolic mechanisms acting in response to these stresses, metabolite profiling was performed using GC-MS. Furthermore, for the water- and phosphorous-limitation studies this approach was complemented with transcript analysis.In order to study water-limitation a hydroponics system supplemented with polyethyleneglycol (PEG) was used to induce water-limitation for a period of one-week. A clear difference in the metabolic profiles of the leaves of plants grown under water stress was observed. Differences were principally due to a reduction in fatty acid levels in the more water stress-susceptible genotype Cashel and an increase in sugars and compatible solutes in the drought-tolerant PI 462336 genotype. Sugars exhibiting a significant increase included, raffinose, trehalose, glucose, fructose and maltose. Raffinose was identified as the metabolite exhibiting the largest accumulation under water-stress in the more tolerant genotype and may represent a target for engineering superior drought tolerance or form the basis of marker-assisted breeding in perennial ryegrass. The metabolomics approach was combined with a transcriptomics approach in the water stress tolerant genotype PI 462336 which identified genes in perennial ryegrass that were regulated by this stress.The characterization of the response to phosphorus-limitation was performed in a hydroponics system containing two solutions with different levels of phosphorus. Samples were collected from the roots and leaves of two genotypes 24 hours after being exposed to stress. Internal phosphate concentrations were reduced and significant alterations were detected in the metabolome and transcriptome of two perennial ryegrass genotypes. Results indicated a replacement of phospholipids with sulfolipids in response to P deficiency and that this occurs at the very early stages of P deficiency in perennial ryegrass. Additionally, the results suggested the role of glycolytic bypasses and the re-allocation of carbohydrates in response to P deficiency The characterization of the metabolic response of L. perenne leaves to different levels of nitrogen supply was performed for seven different genotypes with variability in the regrowth response rate to nitrogen supply in a hydroponics system. This facilitated the identification of common mechanisms of response between genotypes to nitrogen. The metabolic response observed included modifications of the lipid metabolism, as well as alterations of secondary aromatic metabolite precursors in plants exposed to nitrogendeficit. In contrast, plants grown in a nitrogen saturated media appeared to modify to some extent the metabolism of ascorbate. Additionally, it was found that amino acid levels increased with increasing concentrations of nitrogen supplied. This study suggested that the involvement of secondary metabolism, together with lipid and ascorbate metabolism, is of crucial importance in the early-adaptation of perennial ryegrass plants to different levels of nitrogen supply.
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GUERRAND, DAVID. "Etude des voies de synthese des fructanes chez lolium perenne l." Caen, 1997. http://www.theses.fr/1997CAEN2036.
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Chez les poacees, la synthese des fructanes serait catalysee par plusieurs enzymes vacuolaires dont la sst, consideree comme etant l'enzyme cle du metabolisme des fructanes. La sst catalyse la synthese d'un trisaccharide, le 1-kestotriose, a partir de deux molecules de saccharose, et n'a pas encore ete purifiee a l'homogeneite chez les poacees. Chez les especes du genre lolium, ce modele ne permet pas de rendre compte de la synthese de l'ensemble des fructanes detectes in vivo, et notamment des fructanes de masse moleculaire elevee. Une voie enzymatique additionnelle, associee a la fraction proteique insoluble et appelee phleine sucrase, catalyserait la synthese des fructanes de masse moleculaire elevee. Ce travail montre qu'au cours de la repousse consecutive a une coupe la fraction enzymatique soluble totale catalyse la synthese in vitro de la majorite des fructanes detectes in vivo. La fraction insoluble catalyse au cours de la meme periode la synthese de 1-kestotriose uniquement. L'hypothese de l'existence d'une isoforme insoluble de la sst a ete emise et la purification de la sst a ete envisagee. Dans des conditions favorisant l'accumulation des fructanes dans les parties aeriennes de lolium perenne, l'activite sst est multipliee par 3 dans les gaines foliaires et par 1,5 dans les bases des feuilles en croissance. L'emploi d'inhibiteurs des syntheses proteiques suggere que cette augmentation est due a a la synthese de novo de l'enzyme ou de facteurs proteiques controlant son activite. Une approche originale a ete developpee pour purifier la sst : comparaison par electrophorese bidimensionnelle des profils proteiques des tissus foliaires, suivie de la restauration des activites enzymatiques. Trois proteines de masse moleculaire proche de 80 kda ont ete mises en evidence dans les gaines et dans les bases des feuilles en croissance. Leur intensite augmente lorsque les plantes accumulent des fructanes et une d'entre elles catalyse la synthese in vitro de 1-kestotriose en presence de saccharose. Il pourrait s'agir d'une sst.
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Valette, Justine. "Capacité de résistance des coopératives." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTD027/document.
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Ce travail s’intéresse à la capacité de résistance des entreprises coopératives. Depuis la crise financière et ses multiples conséquences, le modèle coopératif est particulièrement promu pour sa capacité à résister aux crises. Toutefois, cette résilience semble déduite de nombreuses constatations d’ordre économique (croissance du chiffre d’affaires cumulé du secteur coopératif, augmentation du nombre de sociétaires et d’emplois salariés, etc.) et non d’études scientifiques. Ainsi, ce travail de recherche a pour objectif d’apporter un éclairage scientifique à la question de la résistance du modèle coopératif. Les coopératives sont détenues par leurs membres qui ont le double statut d’apporteurs de capitaux et de fournisseurs, salariés ou clients. De cette détention de la propriété singulière découle une ambition qui sort du paradigme financier dominant de maximisation de la valeur pour les apporteurs de capitaux : maximiser la valeur pour les membres. Dès lors, une question se pose : la détention de la propriété des coopératives influence-t-elle leur capacité de résistance ? Pour répondre à cette question, nous avons structuré notre pensée autour de quatre essais. Le premier essai est une revue de littérature qui permet de revisiter la notion de performance en coopérative : dans le cas des coopératives, la performance financière peut être assimilée à la capacité à résister dans le temps, c’est-à-dire à survivre. Dans le deuxième essai, nous comparons la survie des coopératives à celle des autres entreprises en distinguant les disparitions par fusion et par liquidation et testons l’influence des déterminants financiers classiques. Les résultats indiquent que les coopératives semblent mieux résister grâce à un mécanisme particulier : la fusion. Cela permet un redéploiement de l’activité ; les membres coopérateurs peuvent continuer à écouler leur production dans une organisation qu’ils détiendront collectivement et qu’ils géreront démocratiquement. Ainsi, si les fusions ne sont pas le propre des coopératives, elles reflètent le principe de solidarité entre coopératives et permettent d’éviter les conséquences néfastes de la disparition de l’activité pour les membres. Les résultats indiquent également que les déterminants financiers classiques ne permettent pas de rendre pleinement compte de la survie des coopératives. Le troisième essai s’intéresse à la résistance sous l’angle de la longévité. Nous observons que les coopératives survivent plus longtemps que les autres entreprises. Au-delà de la comparaison « coopératives versus entreprises classiques », cet article, volontairement inscrit dans un secteur précis et homogène, propose un début d’explication à la meilleure survie des entreprises coopératives : il semble qu’elles répercutent les variations de l’activité sur leurs membres. Le quatrième et dernier essai de la thèse se focalise exclusivement sur les coopératives pour en proposer une analyse financière spécifique et construire des ratios financiers adaptés. Les résultats indiquent que les déterminants de la disparition par fusion et par liquidation sont différents, et confirment le rôle des fusions comme mécanisme de résistance. De plus, contrairement à la croyance selon laquelle les coopératives absorbent les chocs grâce à la détention collective du capital, il semble que les coopératives qui résistent sont celles dont les membres acceptent de supporter le risque au travers de leur rémunération<br>This thesis focus on cooperatives survival. Since the financial crisis, the cooperative model is particularly promoted for its ability to resist crises. However, this resilience seems to be inferred from many economic facts (growth in cumulative cooperative sector turnover, increase in membership and wage employment, etc.) and not scientific studies. Thus, the aim of this research is to provide scientific insight into the ability of the cooperative model to cope better than corporations. Cooperatives are held by their members who have the dual status of suppliers of capital and suppliers, employees or customers. From this singular ownership flows an ambition that goes beyond the dominant financial paradigm of maximizing value for capital providers: maximizing value for members. Hence, one question arises: does ownership of cooperatives affect their ability to cope better? To answer this question, we have structured our thinking around four essays. The first essay is a literature review that revisits the notion of cooperative performance: in the case of cooperatives, financial performance can be equated with the ability to resist over time, that is, to survive. In the second essay we compare the survival of cooperatives and corporations, by distinguishing between disappearances by mergers and liquidations, and test the influence of classical financial determinants. The results indicate that cooperatives seem to be more resilient through a particular mechanism: the merger. This allows a redeployment of the activity and members can continue to sell their production in an organization that they will collectively hold and that they will manage democratically. Thus, while mergers are not the property of cooperatives, they reflect the principle of solidarity between cooperatives and make it possible for members to avoid the negative consequences of the disappearance of the activity. The results also indicate that the traditional financial determinants do not fully account for the survival of cooperatives. The third essay focuses on longevity. We observe that cooperatives survive longer than corporations. Moreover, this article, voluntarily dealing with a precise and homogeneous sector, propose an explanation for the best survival of cooperatives: it seems that they reflect the fluctuations of activity on their members. The fourth and final essay of the thesis focuses exclusively on cooperatives in order to propose a specific financial analysis and special financial ratios to explain their survival. The results indicate that the determinants of disappearance by mergers and liquidations are different, and confirm the role of mergers as a mechanism of survival. Moreover, contrary to the flagship that cooperatives absorb shocks thanks to their common equity, it seems that the ones which cope better are those whose members agree to bear the risk through their remuneration
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Tomaszewski, Celine. "Fine mapping of biomass yield quantitative trait loci in Lolium perenne L." Thesis, University of Leicester, 2012. http://hdl.handle.net/2381/10827.
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Biomass yield is a complex quantitative trait controlled by many environmental and genetic factors. Therefore its study relies on QTL mapping. In a precursor study, a genetic map of L. perenne was constructed on an inbred-derived F2 population and three major biomass QTL have been found on linkage groups (LGs) 2, 3 and 7. In this study, a fine map of the QTL positions was developed by mapping additional ryegrass specific SSR, rice Sequence Tagged Site and Diversity Array Technology markers. A total of 153 markers were added to the existing map leading to a map density of 3.5 cM. The QTL positions were recalculated for dry weight, fresh weight, dry matter and leaf width and in accordance to the preliminary analysis biomass QTL were localized on LGs 2, 3 and 7 but despite the fine map the QTL intervals were not reduced. In order to analyze the QTL regions, the screening of a L. perenne BAC library was performed using the markers flanking the QTL and several clones were isolated. After analysis using the AFLP fingerprinting method, five clones were send for full sequencing to perform a gene prediction and annotation using the Ab initio approach. The annotation revealed for one of the gene structures predicted homology to the lg1- like gene and four other showed homology to regions flanking genes of interest suggesting the possible presence of the genes within the biomass QTL region. The four genes were: L. perenne heading date (Hd1) gene, Avena strigosa beta-amyrin synthase (Sad1) and cytochrome P450 CYP51H10 (Sad2) genes and Lolium multiflorum gene for cold responsive protein.
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Lowes, Wendy. "A molecular analysis of the factors affecting frost tolerance in Lolium perenne." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299054.
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Devereaux, Alissa Corrine. "Transformation and overexpression of a MnSOD gene in perennial ryegrass (Lolium perenne L.)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61891.pdf.
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Xu, Xiangming. "The genetic assessment of inbred lines and their hybrids in Lolium perenne L." Thesis, Aberystwyth University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283766.
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Morgan, Sarah Ann. "Relationships between fatty acids, lipids and other characteristics of perennial ryegrass (Lolium perenne)." Thesis, Aberystwyth University, 2015. http://hdl.handle.net/2160/faf97ebd-42b4-447d-bda5-71d41d14c031.
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Production and consumption of ruminant products is partly being held accountable for the increasing global challenges of human health and climate change. Also, increasing demand for food, feed and fuel is placing growing pressure on land availability. One area under investigation in response to these challenges is fatty acid content of forages. This thesis sets out to investigate the variation and relationships between fatty acids, lipids, chlorophyll and other nutritional aspects of perennial ryegrass. Additionally, it will investigate alternative methods to predict fatty acids in forage. The core experiment involved twenty-four genotypes from two perennial ryegrass populations. Fatty acids were found to increase in leaf material during a growing season. Genotype differences in fatty acid content and composition were found which were broadly consistent across the growing season. Fatty acids correlated positively with crude protein but negatively with water-soluble carbohydrates. A positive and consistent relationship was found between chlorophyll and fatty acids across the growing season. The use of a chlorophyll meter to estimate fatty acid content did not perform very well, due to poor relationships with in vitro chlorophyll, however near-infrared reflectance and Fourier-transform mid-infrared spectroscopy had acceptable prediction accuracies for use as a screening tool. The accuracies of these prediction methods could be improved with further development using larger datasets. Investigation of the lipid composition revealed that galactolipid proportion was the main contributor to increased total fatty acid content in the high FA genotypes. While phospholipid proportion was minimally affected and neutral lipid negatively affected by increased total fatty acid content. Further work is needed to determine the underlying genetic control of fatty acid and lipid synthesis in perennial ryegrass. Additionally, a great deal more research is needed to establish environmental and genetic effects on lipid composition of forages.
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Dominguez, Antonia. "Utilisations comparées d'arnica montana et de bellis perennis dans le traitement des traumatismes en homéopathie." Bordeaux 2, 1997. http://www.theses.fr/1997BOR2P050.
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Viaña, Rubio Carlos Guillermo. "La fenomenología como philosophia perennis. Análisis del excurso sobre el idealismo trascendental de Edith Stein." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2012. https://hdl.handle.net/20.500.12672/12273.
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Publicación a texto completo no autorizada por el autor<br>Busca aclarar todo cuanto sea necesario para entender la fenomenología trascendental de Husserl. Por tal motivo, se vio conveniente hacer un repaso general por la historia y los términos propios de esta corriente filosófica. Se habló de la relación que mantuvo Stein con la escuela fenomenológica y de la razón de su ruptura con Husserl debido al desacuerdo que surgió entre ambos respecto de la modulación del concepto de constitución trascendental. Se desarrolló un análisis del Excurso sobre el idealismo trascendental de Edith Stein.<br>Tesis
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Lino, Villanueva Gladys Liliana. "Arundo donax L. como gramínea perenne para la producción de biomasa en ambiente Mediterráneo." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/398126.
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En los últimos años, es evidente la preocupación mundial sobre las emisiones de gases del efecto invernadero, especialmente CO2.
Una de las principales acciones contaminantes es la quema de combustibles fósiles. Paradójicamente la economía mundial depende (directa e indirectamente) en gran medida de la energía derivada de estos combustibles, principalmente petróleo, carbón y gas natural (en medida progresiva).
Los combustibles fósiles son finitos, aunque aún tenemos un margen de algunos años para agotarlos. Según los expertos, estamos entrando a una nueva era, que deja de lado los combustibles fósiles y en cambio, usa otras fuentes de energía alternativa, como por ejemplo: la biomasa para la producción de biocombustibles (segunda generación), la energía proveniente del sol y la energía obtenida con la fuerza del aire. Estas fuentes deben usarse en conjunto, no son excluyentes.
Una de las decisiones más importantes de la reunión de la COP 21 en París, fue el acuerdo de la disminución progresiva de combustibles fósiles, dado que contaminan altamente el ambiente al liberar grandes cantidades de CO2. Los países industrializados, ya cuentan con algunas investigaciones de años atrás para emplear estas fuentes alternativas. En Europa y EEUU, en cuatro años, se debe incrementar el uso los biocombustibles 10 al 20 %.
Por tanto, hacer uso de biomasa para la producción de biocombustibles es de principal interés.
En el presente estudio, se trabajó con Arundo donax L., como cultivo energético para evaluar su rendimiento bajo estrés hídrico, a nivel fisiológico, bioquímico y molecular. Los resultados nos indican que A. donax tuvo un buen rendimiento a nivel de producción de biomasa, los parámetros fisiológicos no se ven excesivamente afectados, además que tienen un buena eficiencia en el uso del agua. Los resultados moleculares no proporcionaron mucha información en cuanto a genes de tolerancia a la sequía, sin embargo son resultados valiosos para las futuras investigaciones.
Por tanto se puede recomendar a A. donax como un buen candidato a cultivo energético en el ambiente Mediterráneo.<br>In recent years, global concern about emissions of greenhouse gases, especially CO2, is evident.
One of the main pollutants actions is the burning of fossil fuels. Paradoxically, the world economy depends (directly and indirectly) largely on the energy derived from these fuels, mainly oil, coal and natural gas (in progressive measure).
Fossil fuels are finite, although we still have a margin of a few years to exhaust them. According to the experts, we are entering to a new era, leaving aside the fossil fuels and instead, uses other alternative energy sources, such as: biomass for the production of biofuels (second generation), energy from the sun and the energy obtained with the air force. These sources must be used together, they are not mutually exclusive.
One of the most important decisions of the COP 21 meeting in Paris was the agreement of the progressive decrease in fossil fuels; because of highly pollute the environment by releasing large amounts of CO2. Industrialized countries have already some research done years ago to use these alternative sources. In Europe and the USA, in four years, the use of biofuels should be increased from 10 to 20%.
Therefore, make use of biomass for the production of biofuels is a main interest.
In the present study, we worked with Arundo donax L., as an energy crop to evaluate their performance under drought stress, physiological, biochemical and molecular level. The results indicate that A. donax is a good performance at the level of biomass production; the physiological parameters are not unduly affected; besides they have a good water use efficiency. The molecular results did not provide much information about genes of drought tolerance; however, results are valuable for future research.
Therefore, A. donax can be recommended as a good candidate for energy crop in the Mediterranean environment.
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Renner, Christine Joan. "Interactive effects of sulphur dioxide, nitrogen dioxide and the winter environment on Lolium perenne." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254029.
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Bababe, B. "Soil hydraulic conductivity and its influence on water status of Lolium perenne, L. seedlings." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376253.
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Canunayon, Meraluna. "Identification of QTL for leaf senescence related traits in perennial ryegrass (Lolium perenne L.)." Thesis, Aberystwyth University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.704755.
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Monnet, Fabien. "Tolerance a un exces de zinc et activite photosynthetique de lolium perenne infecte ou non par neotyphodium lolii; epuration des eaux residuaires urbaines associee a la production de plantes horticoles (doctorat environnement,biologie et physiologie vegetale)." Clermont-Ferrand 1, 2001. http://www.theses.fr/2001CLF1MM24.
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Giménez, Gómez Nuria. "Estudio del metabolismo del hierro en lactantes de una alta y perenne transmisión de malaria." Doctoral thesis, Universitat de Barcelona, 2003. http://hdl.handle.net/10803/1125.
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La malaria y la anemia se encuentran entre los principales problemas de la salud pública mundial. Los recién nacidos y los niños pequeños son uno de los grupos de la población más afectados por ambas patologías. En áreas endémicas de malaria, la frecuente coexistencia de ferropenia, procesos inflamatorios y malaria dificulta la interpretación de las magnitudes bioquímicas utilizadas para valorar el metabolismo del hierro. Otra dificultad añadida en la interpretación de los resultados es la falta de valores normales en estas poblaciones. En los últimos años se ha desarrollado otro test indicador del contenido corporal de hierro, el receptor soluble de transferrina, que aumenta en aquellos pacientes con anemia por deficiencia de hierro mientras que no se altera en la anemia asociada a procesos infecciosos o inflamatorios. Se han realizado pocos estudios sobre la utilidad de este marcador en niños que viven en áreas endémicas de malaria y con resultados contradictorios.<br/>Los objetivos de esta investigación son: estudiar el metabolismo del hierro en un grupo de lactantes que viven en un área endémica de malaria, determinando el efecto de la inflamación y de la malaria, así como valorar la utilidad del receptor soluble de transferrina en el diagnóstico diferencial de la anemia en esta población. Se analizan, durante el primer año de vida, las magnitudes bioquímicas y hematológicas utilizadas habitualmente para valorar el metabolismo del hierro. Se ha observado que la edad influye sobre la prevalencia de las principales patologías que en esta zona afectan a este metabolismo y sobre las magnitudes bioquímicas y hematológicas estudiadas. Asimismo estas magnitudes se alteran en los niños con malaria y/o procesos inflamatorios. El receptor soluble de transferrina no contribuye al diagnóstico del tipo de anemia en los lactantes que viven en estas áreas, puesto que su concentración se eleva con la hemólisis asociada a la malaria además de con la ferropenia. <br/>Se recomienda continuar las búsqueda de nuevos test no invasivos que permitan detectar la deficiencia de hierro en estas zonas.
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Carlile, Eloise. "Studies on genes and methods for transforming the nucleus and plastids of Lolium perenne L." Thesis, University of Manchester, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687415.
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Lolium perenne L. (perennial ryegrass) is the most widely used turf and forage grass grown in temperate climates throughout the world, commonly found on sports grounds, and in cattle and sheep farming systems. The introduction of new cultivars of L. perenne with improved agricultural performance has relied on traditional breeding methods. Nuclear and plastid transformation provides an alternative approach to obtain plants with desired phenotypes, some of which would be difficult to achieve by classical breeding.
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Ansell, Kevin J. "How does increased COâ†2 concentration effect leaf photosynthesis at low temperatures in Lolium perenne." Thesis, University of Essex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394185.
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