857 resultados para ELECTROLYTE BALANCE


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Tesis (Maestría en Contaduría Pública con Especialidad en Finanzas) U.A.N.L.

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Tesis (Maestría en Ciencia Animal) UANL, 2012.

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Rapport de recherche

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A common real-life problem is to fairly allocate a number of indivisible objects and a fixed amount of money among a group of agents. Fairness requires that each agent weakly prefers his consumption bundle to any other agent’s bundle. Under fairness, efficiency is equivalent to budget-balance (all the available money is allocated among the agents). Budget-balance and fairness in general are incompatible with non-manipulability (Green and Laffont, 1979). We propose a new notion of the degree of manipulability which can be used to compare the ease of manipulation in allocation mechanisms. Our measure counts for each problem the number of agents who can manipulate the rule. Given this notion, the main result demonstrates that maximally linked fair allocation rules are the minimally manipulable rules among all budget-balanced and fair allocation mechanisms. Such rules link any agent to the bundle of a pre-selected agent through indifferences (which can be viewed as indirect egalitarian equivalence).

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With the great advancement of computer technologies, electronic information starts to play a more and more important role in modern business transactions. Therefore, electronic data, such as e-mail, is frequently required in the process of litigation. Companies, on the one hand, have the legal obligations to produce this kind of e-mail evidence. On the other hand, they also undertake a high cost of e-mail evidence preservation due to the great volume on a daily basis. This Article firstly analyzed features of e-mail evidence with the comparison of paper evidence. Then, it discussed about how e-mail is authenticated and admitted into evidence. By using the case laws in different legal aspects and current Canadian legislations, the Author demonstrated the importance of e-mail evidence preservation in ordinary business course. After that, the Article focused on the practical dilemma of the companies between their legal obligation and the expensive cost to preserve e-mail evidence. Finally, the Author proposed suggestions to both companies and courts on how to coordinate the obligation and cost. More specifically, while companies should adopt a document management policy to implement e-mail evidence preservation, courts need to take into consideration of the high cost of e-mail evidence preservation in electronic discovery.

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Malgré un intérêt grandissant pour la question du devenir des survivants de tumeur cérébrale pédiatrique, l’évaluation de leur équilibre est souvent négligée. Les objectifs de nos travaux étaient de 1) examiner les écrits portant sur l’équilibre chez les survivants de tumeur cérébrale pédiatrique; 2) comparer l'équilibre debout et la qualité de vie entre les survivants et un groupe d’enfants témoins; et 3) examiner l'association entre l'équilibre debout et qualité de vie chez les survivants. Notre recension des écrits démontra que les survivants de tumeur cérébrale présentent des troubles de l’équilibre, mais les limites méthodologiques des études nous empêchent de conclure de manière définitive. Ensuite, nous avons recruté un groupe d’enfants survivants d’une tumeur cérébrale de la fosse postérieure et un groupe d’enfants sains. Leur équilibre était évalué à l’aide du Bruininks-Oseretsky Test of Motor Proficiency-2nd edition (BOT-2) et du Pediatric Balance Scale (PBS). Certains participants ont aussi été évalués avec une plate-forme de force où les limites de stabilité étaient documentées. Finalement, tous les enfants et leurs parents remplissaient le Pediatric Quality of Life Inventory (PedsQL4.0). Nos résultats démontrent que les survivants présentent une diminution de l’équilibre mise en évidence par le BOT-2, mais que leur qualité de vie est similaire aux enfants sains. La performance au BOT-2 est associée à la dimension physique du PedsQL4.0, suggérant une relation entre l’équilibre et la qualité de vie. Nos résultats suggèrent qu’une évaluation de l’équilibre pourrait être bénéfique chez cette clientèle afin de mieux cerner ses besoins de réadaptation.

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The recent developments in neurobiology have rendered new prominence and potential to study about the structure and function of brain and related disorders. Human behaviour is the net result of neural control of the communication between brain cells. Neurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between neurons and/or another cell. It mediates rapid intercellular communication through the nervous system by interacting with cell surface receptors. These receptors often trigger second messenger signaling pathways that regulate the activity of ion channels. The functional balance of different neurotransmitters such as Acetylcholine (Ach), Dopamine (DA), Serotonin (5-HT), Norepinephrine (NE), Epinephrine (EPI), Glutamate and Gamma amino butyric acid (GABA) regulates the growth, division and other vital functions of a normal cell / organism (Sudha, 1998). Any change in neurotransmitters' functional balance will result in the failure of cell function and may lead to the occurrence of diseases. Abnormalities in the production or functioning of neurotransmitters have been implicated in a number of neurological disorders like Schizophrenia, Alzheimer's, Epilepsy, Depression and Parkinson's disease. Changes in central and peripheral neuronal signaling system is also noted in diabetes, cancer, cell proliferation, alcoholism and aging. Elucidation of neurotransmitters receptor interaction pathways and gene expression regulation by second messengers and transcriptional factors in health and disease conditions can lead to new small molecules for development of therapeutic agents to improve neurological disease conditions. Increased awareness of the global effects of neurological disorders should help health care planners and the neurological community set appropriate priorities in research, prevention, and management of these diseases.

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A simple method based on laser beam deflection to study the variation of diffusion coefficient with concentration in a solution is presented. When a properly fanned out laser beam is passed through a rectangular cell filled with solution having concentration gradient, the emergent beam traces out a curved pattern on a screen. By taking measurements on the pattern at different concentrations, the variation of diffusion coefficient with concentration can be determined.

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Due to growing land scarcity and lack of nutrient inputs, African farmers switched from shifting cultivation to continuous cropping and extended crop area by bringing fragile lands such as river banks and hill slopes into production. This accelerated soil fertility decline caused by erosion, harvesting and insufficient nutrient replenishment. We explored the feasibility to reduce nutrient depletion by increasing nutrient utilization efficiencies, while diversifying and increasing food production through the development of integrated aquaculture – agriculture (IAA). Considering the climatic conditions prevailing in Kenyan highlands, aquaculture production scenarios were ideotyped per agro-ecological zone. These aquaculture production scenarios were integrated into existing NUTrient MONitoring (NUTMON) farm survey data for the area. The nutrient balances and flows of the resulting IAA-systems were compared to present land use. The effects of IAA development on nutrient depletion and total food production were evaluated. With the development of IAA systems, nutrient depletion rates dropped by 23–35%, agricultural production increased by 2–26% and overall farm food production increased by 22–70%. The study demonstrates that from a bio-physical point of view, the development of IAA-systems in Africa is technically possible and could raise soil fertility and total farm production. Further studies that evaluate the economic feasibility and impacts on the livelihood of farming households are recommended.