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11.
A. K. Shukla 《Resonance》2011,16(12):1294-1302
The intensity of solar radiation in the Earth’s direction from the Sun is approximately 1.361 kW/m2, a number also called the ‘solar constant’. Accordingly, it is estimated that the power Earth receives is about 96 billion
kilowatts from the Sun each second. If this colossal and unlimited energy could be more fully utilized, our dependence on
fast dwindling fossil cache will be drastically reduced. Solar energy is available in various forms such as direct solar radiation,
wind, wave power, rain (in the form of hydropower), photosynthesis and ocean thermal gradients. Among these, the direct conversion
of sunlight into electricity is clean and attractive. This article highlights various routes to directly harness electricity
from sunlight. 相似文献
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Chand Vijaya Sherry Deshmukh Ketan Satish Shukla Anurag 《Educational technology research and development : ETR & D》2020,68(5):2753-2774
Educational technology research and development - This paper explores technology integration and the role of teacher beliefs in this integration to assess a ‘smart-class’ initiative... 相似文献
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Kirtikar Shukla Shikha Sharma Aditi Gupta Arun Raizada Kamini Vinayak 《Indian journal of clinical biochemistry : IJCB》2016,31(4):452-457
25-hydroxy vitamin D [25(OH) vit D] deficiency is a serious public health problem, particularly in the Indian sub-continent. The objective of the present study was to study the prevalence of 25(OH) vit D in different age groups. The data of 25(OH) vit D assay of 26,346 ostensibly healthy individuals, enrolled under executive health checkup at Medanta The Medicity, Gurgaon, over a period of 3 years, were extracted from the hospital information system and reviewed extensively. 25(OH) vit D deficiency (VDD) was defined as 25(OH) vit D < 20 ng/ml, insufficiency (VDI) as 25(OH) vit D between 20 and 40 ng/ml and 25(OH) vit D sufficiency (VDS) as 25(OH) D > 40 ng/mL. 25(OH) vit D deficiency (VDD + VDI) was observed in 93 % of the subject population. Maximum number of the subjects belonged to the age group of 41–60 years. 59 % had frank 25(OH) vit D deficiency when cut off level was <20 ng/mL. Mean value of 25(OH) vit D in our subjects was 21.4 ± 14.4 ng/mL. Significant difference in 25(OH) vit D level was observed in between male and female subjects. Simultaneously 25(OH) vit D levels were significantly lower in the patient visited hospital in winter-spring season than the summer-autumn season (p > 0.001). Our study demonstrates a high prevalence of 25(OH) vit D deficiency in an ostensibly healthy Indian population. There is a need for redefining our reference ranges according to our population and extensively improving the status of vitamin D. 相似文献
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Rimi Shukla Kiran Anand K. M. Prabhu P. Suryanarayana Murthy 《Indian journal of clinical biochemistry : IJCB》1995,10(1):14-18
The hypocholesterolemic effect of the water extract of the bark ofFicus bengalensis was investigated in 3 groups of rabbits, 5 in each group. Group 1 rabbits served as healthy controls and were fed with groundnut oil 1 ml/kg body wt. (bw) for five weeks. Groups 2 and 3 were made hypercholesterolemic by feeding orally cholesterol suspended in groundnut oil (1 ml/kg bw) at a dose of 100 mg/kg bw/day. Group 2 animals (untreated) continued to get the same amount of cholesterol for another four weeks. Group 3 animals received water extract of the bark (50 mg/kg bw/day) in addition to cholesterol as above. At the end of the 5th week, water extract not only prevented the elevation of serum cholesterol in the treated animals (Group 3) but also brought down its level to 160±14 mg% as compared to untreated animals (Group 2) 290±42 mg%. There was improvement in other parameters of lipid profile namely HDL & LDL+VLDL cholesterol and triacylglycerol. 相似文献
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Pushpa P. Durgawale P. S. Shukla Shubhangi D. Sontakke P. G. Chougule 《Indian journal of clinical biochemistry : IJCB》2001,16(1):110-112
In the present study the property of lectin agglutination in blood on normal and different cancer patients has been observed.
The purifiedSynadenium grantii root lectin was non blood group specific and its utility as a diagnostic tool in malignancy was studied. Hemagglutination
(units/ml) of red blood cells of different types of cancer was compared with the normal control's red blood cells. Out of
113 total cancer patients, only a group of 29 breast cancer patients showed significant increase in titre value (P<0.05) compared
to normal control. 相似文献
17.
Vitamin C in Disease Prevention and Cure: An Overview 总被引：1，自引：0，他引：1
Shailja Chambial Shailendra Dwivedi Kamla Kant Shukla Placheril J. John Praveen Sharma 《Indian journal of clinical biochemistry : IJCB》2013,28(4):314-328
The recognition of vitamin C is associated with a history of an unrelenting search for the cause of the ancient haemorrhagic disease scurvy. Isolated in 1928, vitamin C is essential for the development and maintenance of connective tissues. It plays an important role in bone formation, wound healing and the maintenance of healthy gums. Vitamin C plays an important role in a number of metabolic functions including the activation of the B vitamin, folic acid, the conversion of cholesterol to bile acids and the conversion of the amino acid, tryptophan, to the neurotransmitter, serotonin. It is an antioxidant that protects body from free radical damage. It is used as therapeutic agent in many diseases and disorders. Vitamin C protects the immune system, reduces the severity of allergic reactions and helps to fight off infections. However the significance and beneficial effect of vitamin C in respect to human disease such as cancer, atherosclerosis, diabetes, neurodegenerative disease and metal toxicity however remains equivocal. Thus further continuous uninterrupted efforts may open new vistas to understand its significance in disease management. 相似文献
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Vygotsky (in: Rieber, Carton (eds) The collected works of L.S. Vygotsky, vol 1, Pleneum Press, Newyork, pp 167–241, Retrieved from http://images.lib.monash.edu.au/edf5411/04118997.pdf, 1987) stated that academic or scientific concepts require a level of conscious awareness on the part of the child within everyday situations. Academic concepts can be any kind of concept, such as science concepts, mathematics concepts, language concepts and so on. Vygotsky theorised how these academic concepts could be developed by school aged children, but he said less about the prior to school period. Scientific concepts do not instantly develop in their final form but rather follow a process of conceptual development guided through adult–child interaction. It is understood that not any kind of social interactions can be considered developmental, but rather it is interaction which is purposeful and which is viewed as useful for a child’s development. Any kind of conceptual development requires the interaction with the ideal form as presented through adult interaction in social contexts. In any stage of development, ideal forms need to be present in the real context. Ideal in the sense that it acts as a model for that which should be achieved at the end of the developmental period; and in contrast, the real form represents the beginning point of child development (Vygotsky, in: Veer, Valsiner (eds) The Vygotsky reader, Blackwell Publishers, Oxford, pp 338–350, 1994). Many studies have documented the interactions between adults and children for developing scientific concepts in formal settings but little is understood about what happens in family homes for the prior to school age period. We do not know how scientific concepts develop during infants–toddlers everyday life at home. What kinds of social interactions in everyday family life support infants and toddlers to develop early forms of science concepts? This paper presents the findings of a study of infant and toddler learning of science at home. A total of around 30 h of video data were collected from three Bangladeshi families in Australia and Singapore. Three children aged from 10 to 36 months were filmed over 1 year in their everyday context. Informed by cultural-historical theory, the findings indicate that a form of conscious collaboration between parents and infants–toddlers is the key for developing small science concepts from rudimentary to final form. Small science has been defined as simple scientific narration of the everyday moments that infants and toddlers experience at home with their families. It was found that it was the families who filled the gap in understanding, through actively supporting the development of their infant–toddler’s higher mental function. Here the relations between infant–toddler real forms of development were carefully considered by the parents in relation to the ideal form that they created through collective dialogue of small science moments in the environment. If infants–toddlers learn these small concepts in their everyday settings, it is probable that they could link these early forms of understandings to learning abstract concepts later in school. This study contributes to understanding the nature of social interaction patterns for developing small science concepts in the everyday context of family life. This paper also provides pedagogical suggestions for early childhood science education. 相似文献
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ABSTRACT This research project examines experiences at the University of Winnipeg in facilitating land-based pedagogical (LBP) courses to ascertain the potential of land-based learning in strengthening students’ connection with Indigenous ways of knowing in Manitoba. The overarching aim of the research was to create empirical support for building bridges among the pedagogical approaches of land-based learning, two-eyed seeing, and transformative learning as a strategy for promoting transformative third space through land-based education programs. Transformative third space is utilized to conceptualize the process of weaving together Indigenous knowledges and academic knowledge to encourage intercultural dialogue and perceptual shifts in students’ understanding of Indigenous ways of knowing. 相似文献