排序方式： 共有45条查询结果，搜索用时 0 毫秒
41.
Krishna Murali Gumma Daniel Van Rooijen Andrew Nelson Prasad S. Thenkabail Radha V. Aakuraju Priyanie Amerasinghe 《Irrigation and Drainage Systems》2011,25(3):135-149
The goal of this study was to investigate land use changes in urban and peri-urban Hyderabad and their influence on wastewater
irrigated rice using Landsat ETM + data and spectral matching techniques. The main source of irrigation water is the Musi
River, which collects a large volume of wastewater and stormwater while running through the city. From 1989 to 2002, the wastewater
irrigated area along the Musi River increased from 5,213 to 8,939 ha with concurrent expansion of the city boundaries from
22,690 to 42,813 ha and also decreased barren lands and range lands from 86,899 to 66,616 ha. Opportunistic shifts in land
use, especially related to wastewater irrigated agriculture, were seen as a response to the demand for fresh vegetables and
easy access to markets, exploited mainly by migrant populations. While wastewater irrigated agriculture contributes to income
security of marginal groups, it also supplements the food basket of many city dwellers. Landsat ETM + data and advanced methods
such as spectral matching techniques are ideal for quantifying urban expansion and associated land use changes, and are useful
for urban planners and decision makers alike. 相似文献
42.
Kumaraguruparan R Balachandran C Manohar BM Nagini S 《Veterinary research communications》2005,29(4):287-296
Mammary tumours are the most common neoplasms in female dogs. Oxidative stress arising due to overproduction of reactive oxygen species, coupled with altered antioxidant capacities has been implicated in the pathogenesis of all types of cancers. However, the extent of lipid peroxidation and the status of antioxidants in canine mammary tumours have not been investigated. The present study was designed to evaluate the oxidant-antioxidant profile in canine mammary tumours. Lipid peroxidation as evidenced by the formation of thiobarbituric acid-reactive substances, lipid hydroperoxides, and conjugated dienes, as well as the status of the antioxidants superoxide dismutase, catalase, reduced glutathione, glutathione peroxidase, glutathione S-transferase and vitamin C, in tumour tissues of 25 bitches was estimated. Lipid peroxidation in tumour tissues was enhanced compared to the corresponding adjacent uninvolved tissues. This was accompanied by significant elevation in both enzymatic and non-enzymatic antioxidants. This study suggests that upregulation of antioxidants induced by lipid peroxidation confers a selective growth advantage to tumour cells over their adjacent normal counterparts. 相似文献
43.
Praveena PE Jayakumar R Balachandran C Thirumurugan G Raj GD Manohar BM 《Veterinary research communications》2007,31(6):775-781
Rabies is diagnosed by FAT in the impression smears of brain tissues. In this study, an attempt was made to diagnose rabies
using in situ polymerase chain reaction (ISPCR). A digoxigenin-labelled double-stranded probe specific for a portion of the ‘N’ gene of
rabies virus was used. Positive signals were identified as blue dots in the intraneuronal and neuropil areas. 相似文献
44.
45.
Petroleum ether and benzene extracts of Clemeo felina, given orally at doses of 300 mg kg(-1) day(-1) for 30 days, were found to be antidiabetic and antihyperlipemic on alloxan diabetic rats. Moreover, a significant decrease in the activities of serum enzymes like alkaline phosphatase, acid phosphatase and HMGCoA reductase activity in the liver was observed. However, treatment of rats with the extracts as well as standard antidiabetic drugs increased liver hexakinase activity and serum LDH activity. 相似文献