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Plasma micro-element concentrations of copper, zinc, iron, and manganese were studied in 25 buffaloes at varying stages of gestation, between 7 months to term and with varying degrees of vaginal prolapse. A similar number of animals, normally pregnant at identical stages and with no previous history of antepartum vaginal prolapse, was used for control purposes. Plasma iron and manganese concentrations in affected animals were similar to values in normal pregnant animals at all stages. However, plasma copper levels were slightly but not significantly lower in affected animals at all stages, whereas plasma zinc concentrations were significantly low in affected animals from 9 months to term. Possible interactions are discussed between plasma copper and zinc levels, on the one hand, and hormones, like oestrogens and cortisol, on the other. 相似文献
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The concentrations of Cd, Pb, and Cu were measured by Differential Pulse Anodic Stripping Voltammetry for event rainwater samples collected at Deonar (Bombay). A relationship between measured wet deposition of these trace metals and amount of rainfall is calculated. The power law exponent of 0.6 is found suitable to describe the relationship between wet deposition and rainfall amount of monsoonal rain. 相似文献
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Fish community responses to stream flow alterations and habitat modifications by small hydropower projects in the Western Ghats biodiversity hotspot,India 
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下载免费PDF全文 Suman Jumani Shishir Rao Nachiket Kelkar Siddarth Machado Jagdish Krishnaswamy Srinivas Vaidyanathan 《水产资源保护:海洋与淡水生态系统》2018,28(4):979-993
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Plantation-grown progenies of Melia composita Willd.were studied for variability in several physical properties: density,radial and tangential shrinkage,longitudinal permeability of heartwood and sapwood.Furthermore,flat-sawn planks from each of the progeny were subjected to a quick-drying test for determination of kilndrying schedule.The mean density of the species was 0.39 g cm~(-3) and the wood may be categorized as light wood.Mean radial shrinkage(%) for the species was 2.8% with progeny-wise variation in radial shrinkage from 1.56 to 4.11%.Mean tangential shrinkage(%) for the species was 5.54% with progeny-wise variation in tangential shrinkage from 3.69 to 7.71%.The resultant tangentialradial shrinkage ratio was 1.98(less than two),which suggests that the wood is relatively stable with respect to drying behavior.Mean sapwood and heartwood longitudinal permeability of the species were 3.38 and 2.02 Darcy,respectively.Higher longitudinal permeability of sapwood and heartwood indicate better drying and preservative properties of the species.Terazawa quick-drying test method suggests that the species is less susceptible to drying defects.During the test,only moderate checks and cracks were observed.A tentative kiln-drying schedule was recommended based on these results. 相似文献
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Jain VP Tokle T Kelkar S Proctor A 《Journal of agricultural and food chemistry》2008,56(17):8174-8178
Photoirradiation processing can be used to rapidly synthesize conjugated linoleic acid (CLA) in large quantities in soy oil. The objective of this study was to evaluate the effect of the level of refining of soy oil on CLA yields and oxidative properties after photoirradiation. Crude, alkali-refined, alkali-refined bleached, and alkali-refined bleached and deodorized (RBD) soy oils were photoirradiated in a pilot-plant processing system for 12 h with 0.35% iodine catalyst at 47 degrees C. RBD soy oil gave the highest total CLA yield of 16.3% of total oil with 4.3% cis, trans- and trans, cis-CLA isomers. Oxidative stability as measured by weight gain during incubation at 64 degrees C showed that iodine decreased the induction time of soy oil samples by 2-4 days. Photoirradiation processing further decreased the induction time by 2 days as a result of loss of total tocopherols. Iodine addition increased the titratable acidity in all the samples of soy oil. However, the level of refining affects this increase of titratable acidity, and RBD soy oil was found to be the most stable. The study indicates that RBD soy oil was the most suitable candidate for photoirradiation processing. Thus, soy oil should be alkali-refined, bleached, deodorized, and then photoprocessed followed by a secondary adsorption step to remove the iodine catalyst to obtain a RBD CLA-rich soy oil. 相似文献
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Subhasis Dey Sunil Kumar Choudhary Sushant Dey Kadambari Deshpande Nachiket Kelkar 《Fisheries Management and Ecology》2020,27(2):140-154
Local ecological knowledge (LEK) can offer insights into fisheries management by describing long‐term changes that are difficult to unravel in data‐poor river‐floodplain fisheries. LEK is derived from complex interactions between fishers’ observations of environmental change and their institutional capacities to manage fisheries. Hence, it is important to understand where and how LEK and formal scientific studies on fish species’ decline could complement each other. In this paper, the causes of decline of 58 fish and two shrimp taxa were identified from LEK data (1999–2019) obtained from river–floodplain fisheries of the Gangetic plains (Bihar, India). Qualitative analyses of LEK were used to generate species‐specific hypotheses and historical insights on their declines. Destructive fishing, overfishing and the Farakka barrage were cited by fishers as the major causes of declines. Potential reasons for these perceptions were explored in relation to fishers’ experiences of conflicts in the region over fishing rights and access. 相似文献
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Wu L Estrada O Zaborina O Bains M Shen L Kohler JE Patel N Musch MW Chang EB Fu YX Jacobs MA Nishimura MI Hancock RE Turner JR Alverdy JC 《Science (New York, N.Y.)》2005,309(5735):774-777
It is generally reasoned that lethal infections caused by opportunistic pathogens develop permissively by invading a host that is both physiologically stressed and immunologically compromised. However, an alternative hypothesis might be that opportunistic pathogens actively sense alterations in host immune function and respond by enhancing their virulence phenotype. We demonstrate that interferon-gamma binds to an outer membrane protein in Pseudomonas aeruginosa, OprF, resulting in the expression of a quorum-sensing dependent virulence determinant, the PA-I lectin. These observations provide details of the mechanisms by which prokaryotic organisms are directly signaled by immune activation in their eukaryotic host. 相似文献
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