http://biblioteca.universia.net/vernivel.do?start=80&nivel=3107 Mostrando recursos 581 - 600 de 1,164 es http://biblioteca.universia.net/img/logotipo.jpg http://biblioteca.universia.net/ http://biblioteca.universia.net/ficha.do?id=46506131 This document (1) outlined how more comprehensive and intensive discussions among industry leaders would be useful to more clearly define the origin and scope of the problems, (2) evaluated alternative courses of action, and (3) established priorities for action. On February 16, 1998, the first South Texas Produce Initiative organizational meeting was held in Weslaco, a joint venture between the produce industry and the Texas A&M University System. Commodities to examine were selected and... Extension Assistant-horticulture Marketing; Program Assistant; Charles R. Hall; Lance D. Pate; Lance D. Pate; Ouina Rutledge; Ouina Rutledge http://biblioteca.universia.net/ficha.do?id=42530288 The aim of this study was to quantify the density of taste pores on the anterior region of the tongue, in adult males and 8 to 9 year old boys. Earlier studies had shown that, although 8 to 9 year olds were poorer than adults at sensing the tastant sucrose using a whole mouth procedure, localised regions of the tongue in male children were more sensitive than equivalent regions in adults. This study aims to detemine whether the age differences in sensitivity is related to a difference in tast... Segovia, Carolina; University of Western Sydney, Hawkesbury; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530289 Comparative physiological and biochemical studies were conducted with apple varieties which were susceptible (Granny Smith and Lady Williams) and resistant (Crofton) to superficial scald, to understand the mechanisms of scald aetiology. This provided a basis for the development of alternatives to diphenylamine to control the disorder in cool stored apples. The research confirmed earlier research, which showed that the typical scald symptoms were the result of the deposition of brown pigments ... Golding, John B.; University of Western Sydney, Hawkesbury; Faculty of Environmental Management and Agriculture; Centre for Horticulture and Plant Sciences http://biblioteca.universia.net/ficha.do?id=42530290 Phytoremediation is a relatively new technology that uses plants for the clean up of contaminated soils.Its low cost, simplicity and environmentally friendly approach make this technology a viable option for remediation but the main drawback is that it must be considered as long term alternative given its slow speed. This work is the first to report the use of Plant Growth Regulators(PGR)to enhance the performance of phytoremediation so that less time is needed for remediation.Soil samples we... Fuentes, Hector D.; University of Western Sydney, Hawkesbury; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530293 This project examines whether there is a direct link between respiration and the rate of senescence of fresh produce. Treatments that increase the storage life of fresh products, such as cooling, modified atmospheres and semi-permeable coatings, often decrease respiration rates. This suggests that it may be possible to assess the effectiveness of a specific storage treatment in terms of its effect on reducing respiration. If this is so, total respiration during storage should sum to a constan... Bower, Jenny H.; University of Western Sydney, Hawkesbury; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530321 The current atmospheric CO2 partial pressure of 36 Pa is expected to nearly double by the end of the 21st Century.Increases of this magnitude are likely to profoundly change the biochemistry, growth and morphology of plants, particularly C3 species.The research in this thesis focuses on the micronutrient Zinc (Zn), because this element is associated with a number of macromolecules which play key roles in plant growth and development, particularly on the shoot apex.The main objective of the wo... Defiani, Made Ria; University of Western Sydney, Hawkesbury; Faculty of Science and Technology; Centre for Horticulture and Plant Sciences http://biblioteca.universia.net/ficha.do?id=42530322 Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of... Regnault, Timothy Robert Hume; University of Western Sydney, Hawkesbury; Faculty of Agriculture and Horticulture; School of Agriculture and Rural Development http://biblioteca.universia.net/ficha.do?id=42530355 The atmospheric CO2 concentration is rising. These higher CO2 concentrations will certainly affect growth but may also affect nutrient responses of crop plants. The overall aim of this thesis was to investigate the effect of elevated CO2 on the nitrogen and phosphorus nutrition of two different crop species: wheat and cotton. Once establishing the new nutrient requirements of these crop species at elevated CO2 the study focussed on the interactive effects of elevated CO2 and N supply on growt... Rogers, Gordon Stephen; University of Western Sydney, Hawkesbury; Faculty of Science, Technology and Agriculture; School of Horticulture http://biblioteca.universia.net/ficha.do?id=42530361 Acid leaching of different natural chrysocolla samples under ambient conditions demonstrated that the chemical and chrystallographic inhomogenity significantly affects the rate and that it is virtually impossible to use the mineral as a model for the kinetics of hydrometallurgical processing of copper ores.Dissolution experiments, stability diagrams,and X-ray powder diffraction studies are undertaken and studied in this research and results are given.It is found that a complete solid solution... Crane, Martin John; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530387 This thesis describes a comprehensive study of the cellular responses of a number of endangered marsupial species with a principal focus on the tammar wallaby (Macropus eugenii) as a model macropod species. The development of in vitro experimental assays for the assessment of immune responses in this model species are described, which provided a set of benchmarks for comparisons with other members of the Macropodidae and with eutherian mammals. Once this data was collected and protocols were ... Young, Lauren Jill; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530401 Flumetsulam … is a member of the triazolopyrimidine sulfonanilide family of herbicides. It is used for pre or post-emergence broadleaf weed control in wheat, corn, barley and soybean. It has low toxicity and is readily degradable. A HPLC-UV method for the analysis of flumetsulam with the use of a surrogate and internal standard was developed and validated for soybean. The surrogate and internal standards are diclosulam and benzoic acid respectively. A LC-ESI-MS/MS confirmation method in... Moawad, Michael; University of Western Sydney; College of Health and Science; School of Food Science and Horticulture http://biblioteca.universia.net/ficha.do?id=42530455 A series of physical and chemical analyses were conducted over a fifteen month period to establish the ecological risk, if any, of discharging minewater into aquatic ecosystems. Organic and inorganic analyses were used to determine the extent of contamination of minewater with soluble hydraulic fluids and other contaminant species. Throughout the sampling period the pithead discharge water exhibited a neutral pH and low levels of iron, manganese, zinc and potassium were found. Parallel toxico... Agars, Robert C; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530491 The aim of this study was to investigate the distribution, density, health, condition, fertility, causes of mortality, home range size and tree preferences, of koalas in low density populations in the south of Sydney. This information was then used to make management recommendations; good management is needed because there is rapid human population growth and pressure for development of koala habitat in the Sydney region. State Environment Planning Policy 44(SEPP44) is New South Wales legisla... Ward, Steven John; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530518 The study focuses on the relationships between nomads, the government and the natural resource base of Iran as a problematical situation. The research approach adopted was action-oriented with an emphasis on the process of development through the integration of theory with practice in a critical learning system designed to improve the situation and emphasising the significance of systemic thinking and acting.The underlying rationale for the approach is that the relatively limited achievements... Emadi, Mohammad H.; University of Western Sydney, Hawkesbury; Faculty of Agriculture and Horticulture; School of Agriculture and Rural Development http://biblioteca.universia.net/ficha.do?id=42530533 The avocado industry needs improved cultivars with better agronomic traits such as increased resistance to pests and diseases. These could be developed with biotechnological approaches to breeding such as the use of genetic engineering. a prerequisite to the use of this technique if the development of an efficient in vitro regeneration system. The objective of this study therefore, was to develop a tissue culture protocol suitable for the propagation and transformation of avocado. To do this,... Ahmed, Muhammad Faisal; University of Western Sydney, Hawkesbury; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530542 The aim of this research was to develop a new harvest maturity index for highly coloured stone fruit that is not affected by seasonal or climatic factors. The judgement of commercial maturity is difficult with some cultivars of stone fruit because they develop intense skin pigmentation several days before they are ripe. Studies of the changes of the physiochemical and physiological parameters associated with ripening confirmed that no single measurement is suitable for the assessment of harve... Abdi, Nasser; University of Western Sydney, Hawkesbury; Faculty of Science, Technology and Agriculture; Centre for Horticulture and Plant Sciences http://biblioteca.universia.net/ficha.do?id=42530567 The importance of European honey bees in improving fruit set, yield and fruit weight of kiwifruit on the central east coast of Australia was investigated. Field investigations were carried out using different bee saturations and different types of male pollen parents. These investigations confirmed the importance of honey bees in kiwifruit fruit set, yield and fruit weight. However, the results suggested that increasing bee activity alone may not increase pollination of kiwifruit by honey bee... Howpage, Daya; University of Western Sydney, Hawkesbury; Faculty of Environmental Management and Agriculture; Centre for Horticulture and Plant Sciences http://biblioteca.universia.net/ficha.do?id=42530618 Diabetes can affect the structure and function of the foot, resulting in severe limitation of mobility and reduction of life expectancy. Early warning signs include limited joint mobility (LJM), soft tissue changes, high plantar pressure (HPP), high pressure time integrals (P/TI) and plantar callus. These abnormalities were examined in 216 young people with diabetes and 57 controls. The fingers, toes, ankle subtalar and first metatarsophalangeal joints shows reduced motion and the plantar apo... Duffin, Anthony C.; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530626 The purpose of this thesis was to investigate mechanisms contolling the growth of corneal epithelial cells, particularly the intracellular signals involved with stratification compared with cellular migration and maturation. Buttons of epithelium were cultured in different culture media. The explants were monitored microscopically for their growth patterns and finally fixed and examined for cytokeratin, vimentin and actin. Different growth patterns were observed in the different media, indica... Liu, Ke; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture http://biblioteca.universia.net/ficha.do?id=42530629 The study involved the investigation of ancient dental enamel derived from former inhabitants of Pacific Islands: a population whose movements were necessarily more restricted than their mainland counterparts. Lead and strontium isotope analysis of human teeth were undertaken using TIMS and MC-LAM-ICPMS. Exposure information was obtained from elemental concentrations of lead and strontium using LAM-ICPMS, GFAAS and ASV. Isotopic measurements of lead within the dental enamel of these individua... Jaric, Jovanka; University of Western Sydney; College of Science, Technology and Environment; School of Science, Food and Horticulture