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Ranjana Singh Rajesh K. Singh Anil K. Tripathi Nikhil Gupta Ajai Kumar Anil K. Singh Abbas A. Mahdi Rajendra Prasad Raj K. Singh 《Indian journal of clinical biochemistry : IJCB》2004,19(1):14-20
The circadian periodicity of plasma lipid peroxide levels and activities of superoxide dismutase (SOD), catalase (CAT) and
glutathione peroxidase (GPx) were studied in 50 clinically, bacteriologically and radiologically proven fresh cases of pulmonary
tuberculosis (age: 21–45 years) and 60 age-matched healthy volunteers with diurnal activity from 06∶00 to about 22∶00 and
nocturnal rest. A marked circadian variation in plasma lipid peroxide level was recorded in healthy subjects and pulmonary
tuberculosis patients with significant amplitude and acrophase around 16∶21 and 17∶12 respectively. The acrophase tended to
be delayed in tuberculosis patients. Furthermore, a statistically significant circadian rhythm was found in SOD, CAT and GPx
activities in normal volunteers and pulmonary tuberculopsis patients. SOD and CAT enzyme activity was noted to be maximum
at 06∶00 and minimum at 00∶00 in tuberculosis patients. The circadian acrophase for GPx activity was recorded at 16∶15 in
normals and around 22∶45 in patients. Moreover, the activity was found to be decreased at all sampling hours during 24-hours
sleep-awake period in patients in comparison to healthy counterparts. The MESOR and circadian amplitude also decreased markedly.
The decreased activity of measured antioxidant enzymes in pulmonary tuberculosis patients could probably be associated with
oxidative stress and/or decreased anti-oxidant defensive mechanism in such patients. 相似文献
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This paper applies a morphogenetic change framework to the case study of a financial information services provider's relationships with offshore IT application vendors over a six year period, in order to discover the underlying causal mechanisms. The analysis finds the progression to have consisted of a sequence of three major organizational changes, where each change was characterized by a morphogenetic cycle of three phases – Structural and Cultural Conditioning, Socio-Cultural Interactions, and Structural and Cultural Elaboration. In the first phase of each change cycle, structural and cultural outcomes of antecedent cycles conditioned the context as perceived by managerial actors. In the second phase, these conditioning factors interacted with the organization's prevailing socio-cultural dynamics to influence managerial decisions and to effect change. Finally, in the third phase, the emergent consequences of their decisions further altered the structural and cultural landscape, thus conditioning the context for the subsequent change cycle. While the specific organizational mechanisms activated varied from one cycle to the next, the overall analysis collectively revealed the company's quest for more effective vendor relationships. It was seen to have struggled with inconsistencies in its view of a captive vendor's role in the first cycle, and a lack of standard processes with multiple vendors in the second cycle, before establishing closer, comprehensive, successful relationships with two vendors in the third cycle. These findings serve to validate the utility of the morphogenetic analytical framework in uncovering change factors unique to specific offshoring contexts. 相似文献
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Antioxidant vitamins and chemoprevention 总被引：1，自引：0，他引：1
Harbans Lal Rajesh Pandey S. K. Aggarwal 《Indian journal of clinical biochemistry : IJCB》1999,14(1):1-11
Free radicals play an important role in human carcinogenesis and the mechanism of their counteraction by antioxidant vitamins
has been reviewed. It seems more likely that these vitamins work in concert rather than acting singly. Currently available
data are compatible with the notion that these vitamins act as chemopreventives against some important cancers, e.g. carotenoids
for lung cancer, ascorbic acid for salivary gland cancer, tocopherols for head and neck cancers etc. Thus, a greater consumption
of fruits and vegetables should be encouraged as they are the natural sources of these chemopreventive, antioxidants along
with other protective factors packaged by nature. However, much work still remains to be done to establish the role of antioxidant
vitamins in carcinogenesis. 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献
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Jan.28th.2004 Yuan Cai has left home.He's gone to America-the great Americawhere fortunes can be made in less than no time.Yuan Cai married meseven years ago.He said I’m the most beautiful woman in the world.Iknow that isn't true but I believed him.Yuan Cai said he would live withme forever.Yes,he lived with me forever for two years.After two yearsfofever ceased.After that whatever it is,is just a ticking clock and theturning calendar pages.Yes.forever teased to be after two years.It'salready five years since forever ended and something else began and I 相似文献
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This article describes an interesting challenge concerning a mechanical black box that was posed as a five hour experimental
examination in the 35th International Physics Olympiad1 held in Pohang, Korea from July 15–23 2004. It marked India’s seventh foray into this exciting event where seventy one nations
participated. As a leader of the Indian team at Korea, one of us (RBK) was privileged to be in the thick of action. Our performance
was a success and we secured one gold, two silver and two bronze medals. 相似文献
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