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61.
Mohan?ChinnappanEmail author Michael?J.?Lawson 《Journal of Mathematics Teacher Education》2005,8(3):197-221
Current reform-driven mathematics documents stress the need for teachers to provide learning environments in which students
will be challenged to engage with mathematics concepts and extend their understandings in meaningful ways (e.g., National
Council of Teachers of Mathematics, 2000, Curriculum and evaluation standards for school mathematics. Reston, VA: The Council). The type of rich learning contexts that are envisaged by such reforms are predicated on a number
of factors, not the least of which is the quality of teachers’ experience and knowledge in the domain of mathematics. Although
the study of teacher knowledge has received considerable attention, there is less information about the teachers’ content
knowledge that impacts on classroom practice. Ball (2000, Journal of Teacher Education, 51(3), 241–247) suggested that teachers’ need to ‘deconstruct’ their content knowledge into more visible forms that would
help children make connections with their previous understandings and experiences. The documenting of teachers’ content knowledge
for teaching has received little attention in debates about teacher knowledge. In particular, there is limited information
about how we might go about systematically characterising the key dimensions of quality of teachers’ mathematics knowledge
for teaching and connections among these dimensions. In this paper we describe a framework for describing and analysing the
quality of teachers’ content knowledge for teaching in one area within the domain of geometry. An example of use of this framework
is then developed for the case of two teachers’ knowledge of the concept ‘square’. 相似文献
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学缘对教师学术职业发展有重要影响,而海归教师因同时拥有国内和海外二元学术关系网络而在学缘上表现出特殊性。本研究采用混合研究方法,在量化部分以上海21所高校的359位海归教师为样本,在质性部分对来自上海6所高校的10名海归教师开展一对一半结构访谈,共同探究学缘对海归教师学术职业发展的影响。研究发现:高校海归教师对自身学术职业发展现状的评价不高;学缘影响海归教师学术职业平台选择以及职业"入场券"的获得。"校缘"对海归教师学术职业发展影响不显著,但与海外导师联系的频率对海归教师学术职业发展有显著正向影响。研究最后从高校、学院和个体层面对促进高校海归教师学术职业发展提出政策建议。 相似文献
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Tangirala Malati Ph. D. D. Murali Mohan Krishna B. Sadasivudu 《Indian journal of clinical biochemistry : IJCB》1991,6(1):51-57
Serum fructosamine (SFRC) was estimated using single colour reading procedure in 50 normals and 160 adult onset random diabetics.
Serum fructosamine levels were observed to be 1.86±0.321 m moles/L (Range 1.0 to 2.4) and 3.44±0.671 (Range 2.0 to 5.7) in
normal and diabetic subjects respectively. Serum fructosamine levels as determined by the method adapted, were found to be
unaffected by a transient rise in serum glucose levels during an oral glucose tolerance test. Significantly elevated SFRC
concentration was also seen in diabetic groups in spite of different combinations of antidiabetic treatment. Attempts to correlate
SFRC with duration and secondary complications of diabetes did show significant elevation in all the groups irrespective of
duration and complications thus indicating poor glycemic control. 相似文献
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T. Malati B. Yadagiri D. Murali Mohan Krishna V. Shantaram D. Raghunadharao K. Subbarao 《Indian journal of clinical biochemistry : IJCB》2001,16(1):52-59
In the present study, monoclonal gammapathy was identified in a total of 245 patients of plasma cell dyscrasias during period
of 1987 to 2000. The monoclonal band was identified in serum by agar gel electrophoresis in all the cases and in urine in
a few cases. Characterization of paraprotein (monoclonal immunoglobulin class and light chain type) was carried out by employing
immunoelectrophoresis and/or immunofixation electrophoresis using heavy chain specific gamma, alpha, mu, delta and epsilon
and light chain specific kappa (K), lambda (λ) antisera. Serum immunoglobulins Ig G, Ig A, and Ig M were estimated by immunoturbidometry.
Serum urea, creatinine, uric acid, alkaline phosphatase, total proteins, albumin, calcium and phosphorus were estimated by
using routine biochemical methods. Among the 245 cases, 73.1% monoclonal gammapathies were of secretory type and 7.3% were
non-secretory. Monoclonal gammapathies were associated with 80.4% of multiple myeloma, 8.9% of solitary plasmacytoma, 4.1%
of extra-medullary plasmacytoma, 3.3% of lymphoma and 2.9% of plasma cell leukemia. Classification of secretory monoclonal
immunoglobulin revealed monoclonal immunoglobulin Ig G in 74%, Ig A 15% and Ig M in 2.9% cases. 相似文献
68.
Krishna Mohan Surapneni V. S. Chandrasada Gopan 《Indian journal of clinical biochemistry : IJCB》2008,23(1):41-44
The changes in the erythrocyte lipid peroxidation products (MDA), levels of glutathione (GSH), ascorbic acid and plasma vitamin
E (non enzymatic antioxidant parameters) and activities of antioxidant enzymes superoxide dismutase (SOD), glutathione peroxidase
(GPX), catalase in erythrocytes and plasma glutathione - S - transferase (GST) activity were estimated in patients with rheumatoid
arthritis. This work was undertaken to assess oxidative stress and anti oxidant status in patients with rheumatoid arthritis.
It was observed that there was a significant increase in erythrocyte MDA levels, activities of SOD, GPX, plasma GST and a significant decrease in erythrocyte GSH, ascorbic acid, plasma vitamin E levels and catalse activity in
patients with rheumatoid arthritis when compared to controls. The results of our study suggests higher oxygen free radical
production, evidenced by increased MDA and decreased GSH, ascorbic acid, vitamin E and Catalase activity, support to the oxidative
stress in rheumatoid arthritis. The increased activities of antioxidant enzymes may be a compensatory regulation in response
to increased oxidative stress. 相似文献
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