排序方式： 共有38条查询结果，搜索用时 15 毫秒
1.
Pankaj Abrol Umesh Mehta Harbans Lal 《Indian journal of clinical biochemistry : IJCB》2002,17(1):64-68
Vitamin A status was measured in 50 pre-school children with acute and persistent diarrhoea. It was measured by (a) Fluorometric
micromethod and (b) Conjunctival impression cytology (CIC). The results were compared with 25 normal children. Vitamin A status
was lower in children with persistent diarrhoea whereas the results were comparable between the children with acute diarrhoea
and control subjects. 相似文献
2.
Sanjeev Shruthi Molly Mary Thabah Bobby Zachariah Vir Singh Negi 《Indian journal of clinical biochemistry : IJCB》2021,36(2):185
To study oxidative stress in systemic lupus erythematosus (SLE) by estimating serum oxidised LDL (OxLDL), 8-hydroxy-2′-deoxyguanosine (8-OHdG), malondialdehyde (MDA), and total anti-oxidant status and to correlate with SLE disease activity and disease damage. Eighty SLE patients satisfying the Systemic Lupus International Collaborating Clinics/American College of Rheumatology (SLICC/ACR) 2012 criteria and 80 healthy controls were studied. Exclusion criteria were infections, renal insufficiency, other connective tissue diseases, drug-induced lupus, smoking, alcohol consumption. Disease activity was measured by SLE disease activity index-2 K (SLEDAI), disease damage was quantified by SLICC-Damage Index (SDI). Sera was tested for OxLDL, 8-OHdG, and total antioxidant status (TAS) by double-antibody sandwich ELISA; MDA measured by Colorimetric assay. Oxidative stress markers were compared between group1- controls, group 2-mildly active SLE (SLEDAI ≤ 5), group 3- moderate to highly active SLE (SLEDAI ≥ 6). SLE patients had significantly higher MDA, 8-OHdG and lower TAS when compared to healthy controls, while OxLDL was similar in the three groups. MDA, 8-OHdG were significantly higher, TAS lower in group 3 compared to group 2. MDA had positive correlation with SLEDAI, TAS negatively correlated with SLEDAI. SLE with neuropsychiatric manifestations, vasculitis, anti-sdDNA antibodies had higher MDA, MDA/TAS ratio. SLE patients with thrombocytopenia, and vasculitis had higher OxLDL. Only OxLDL was significantly higher in those patients who have SDI > 1. SLE patients have increased oxidative stress measured by increases in MDA, 8-OHdG, and lower total antioxidant status that was associated with disease activity and some disease manifestations. However only OxLDL was associated with damage. 相似文献
3.
Bobby Hoffman Matthew T. McCrudden Gregory Schraw Kendall Hartley 《Asia Pacific Education Review》2008,9(4):464-474
This study investigated the influence of informational complexity and working memory capacity on problem-solving efficiency.
We examined two predictions of thesituational efficiency hypothesis, which states that the efficiency of problem solving varies as a function of situational constraints. One prediction is that
informational complexity affects problem-solving efficiency. A second prediction is that working memory capacity affects problem-solving
efficiency. Students completed a working memory task and solved abstract and concrete syllogisms. Participants solved abstract
syllogisms more accurately than concrete syllogisms and spent more time solving abstract syllogisms. Thus participants demonstrated
greater problem-solving efficiency when solving concrete syllogisms. Results indicate that there is a trade-off between problem-solving
accuracy and problem-solving time when information differs with respect to informational complexity, a phenomenon we refer
to as theefficiency paradox. Working memory capacity did not affect accuracy or efficiency. The results support the conclusion that problem-solving efficiency
is situational and a function of the complexity of information. Educational implications and directions for future research
are suggested. 相似文献
4.
Bobby Virgil Cole Nicholas J. Sauers 《Journal of Research on Technology in Education》2018,50(3):200-213
One of the fastest growing, most discussed, and most expensive technology initiatives over the last decade has been one-to-one (1:1) computing initiatives. The purpose of this study was to examine key factors that influenced implementing and sustaining 1:1 computing initiatives from the perspective of school superintendents. Nine superintendents of established 1:1 programs were interviewed, and findings identified five themes for successful implementation and sustainability of 1:1 initiatives. (Keywords: 1:1 schools, school technology leadership, 1:1 implementation) 相似文献
5.
Pankaj Abrol Neeraj Sharma Harbans Lal 《Indian journal of clinical biochemistry : IJCB》1997,12(2):125-127
Serum vitamin E and cholesterol concentrations were measured in 50 children with protein energy malnutrition (PEM) and results
were compared with a group of 50 normal controls. Mean serum vitamin E concentration as well as vitamin E/cholesterol ratio
were found to be reduced in children with PEM while their mean serum cholesterol level was not significantly different from
the control group. Data suggest that the reduced levels of serum vitamin E in PEM may be a result of malnutrition per se. 相似文献
6.
Thirty patients with thalassemia major receiving repeated blood transfusion were studied to see their serum parathyroid hormone
(PTH) and calcium status. Serum PTH, serum and 24 h urinary calcium, and serum alkaline phosphatase, phosphorus, and albumin-corrected
calcium levels were determined. Half of these patients, in addition to transfusion, were also supplemented with vitamin D
(60,000 IU for 10d) and calcium (1500 mg/day for 3 months). Serum PTH, and serum and 24 h urinary calcium concentrations of
the patients receiving transfusions were found to be significantly reduced while their serum alkaline phosphatase, phosphorus,
and albumin-corrected calcium levels were not significantly altered when compared to the respective mean values for the control
group. Vitamin D and calcium supplementation significantly increased their serum PTH and calcium levels. Supplementations
also increased urinary excretion of calcium. The results thus suggest that patients with thalassemia have hypoparathyroidism
and reduced serum calcium concentrations that in turn were improved with vitamin D and calcium supplementation. 相似文献
7.
8.
9.
10.
Growing criticism of existing educational leadership preparation programs seems to focus on a lack of contextual relevancy and instructional leadership. Universities and school districts need to develop more formal, collaborative, long-term relationships focused on the nature of principal preparation, moving beyond acculturation to district norms and irrelevancy to building future leaders' capacity for continuous educational improvement. Educational administration as an applied field demands that we answer key questions regarding the development of effective practitioners. 相似文献