首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   34篇
  免费   0篇
教育   16篇
科学研究   15篇
各国文化   1篇
信息传播   2篇
  2023年   1篇
  2021年   2篇
  2020年   2篇
  2018年   1篇
  2016年   1篇
  2015年   1篇
  2014年   2篇
  2013年   7篇
  2012年   1篇
  2009年   1篇
  2008年   1篇
  2006年   1篇
  2005年   2篇
  2004年   1篇
  2003年   2篇
  2002年   1篇
  2001年   2篇
  1999年   2篇
  1998年   1篇
  1997年   1篇
  1991年   1篇
排序方式: 共有34条查询结果,搜索用时 31 毫秒
21.
In vitro released antigens by living parasites or bacteria underin vitro maintenance or short term culture showing specific humoral immune response have been explored in development of immunodiagnostics for infectious diseases such as filariasis and tuberculosis in our laboratory. ELISA usingB. malayi mf ES antigen has been explored for detecting IgG antibody by Indirect ELISA and antigen by Inhibition ELISA and in immunomonitoring of carriers as well as clinical filarial cases. A ten year follow up of mf carriers with DEC therapy showed disapperance of antigen and antibody followed by reappearance in few cases in an endemic area. None of the cases followed developed clinical symptoms suggesting the need for long term monitoring and treatment of microfilaraemic carriers. Further immunomonitoring was found to be useful in confirming filaria aetiology in the absence of microfilaremia and determining appropriate period of treatment of acute, early clinical and occult filarial infections for clinical relief and cure.Indirect Stick Penicillinase ELISA system using Mtb EST-6 antigen for detecting tuberculous IgG antibody and a Sandwich Penicillinase ELISA system using affinity purified antibody for detecting circulating antigen were explored in tuberculosis. A combination of both the assay systems with a sensitivity of 70% and specificity of 98% was found to be promising in the precise diagnosis of pulmonary tuberculosis. Further antigen detection was found to be useful in bone and joint tuberculosis.  相似文献   
22.
Analysis of tubercular antibody, circulating free and immune complexed antigen (CIC-Ag) was done in confimed pulmonary tuberculosis sera by ELISA, using ES-31 antigen and affinity purified anti ES-31 antibody. Twenty three of 25 (92%) tuberculosis sera were positive for IgG antibody to ES-31 antigen. Using anti ES-31 antibody, free tubercular antigen could be detected in 20 of 25 (80%) cases whereas circulating immune complexed antigen (CIC-Ag) in 18 of 25 (72%) cases by sandwich ELISA. Of the two sera showing absence of antibody, one showed presence of free and CIC-Ag whereas the other showed the presence of free antigen. Thus antigen assay may be used as an adjunct tool for confirmation of pulmonary tuberculosis.  相似文献   
23.
Business schools have significantly increased the percentage of teaching-focused faculty (defined here as full-time faculty with doctorates not on the tenure track) over the last decades. However, many schools have not adequately updated their policies to support these faculty, leading some teaching-focused faculty to feel like second-class citizens. In this article, we provide a literature review of teaching-focused faculty hiring trends, challenges faced by teaching-focused faculty and the institutions that hire them, and proposed improvements to these challenges. Next, we draw from these best practices provided in the literature, as well as from first-person interviews, to share how business schools address these challenges. Specifically, we use interviews from decision makers (current and former deans) to examine how schools approach hiring and supporting teaching-focused faculty. Our study shows improved institutional support and acceptance of teaching-focused faculty over the past two decades, but with room for continued improvement. We conclude by arguing that TF faculty should be treated as strategic assets within schools in order to support collegiality, acceptance, and professional respect, while also enhancing students’ learning opportunities. In doing so, we hope to start a discussion of best practices that can better equip schools to provide institutional support to teaching-focused faculty.  相似文献   
24.
E-mail-alerting system of online databases is a new trend catching up fast with researchers. Results of auto-run set queries are informed through e-mails as ‘alerts’ to the registered user. Even though e-mail-alerting systems are quite popular amongst Internet users, their inherent advantages remain unexplored in the Indian scenario. An effort to explore all such features available in the ScienceDirect online database has been made in this paper. The process of registration for activating e-mail alerts, customizing a home page, selecting favorite journals, search alerts, journal issue alerts, citation alerts and search history are briefed with screen shot examples. The study emphasizes the fact that librarians and information Science professionals should take lead roles in unveiling all such possible features available in various online databases. They should also make efforts at informing the user community of the utility of such features in a bid to enhance the research output.  相似文献   
25.
Fasting samples of 914 subjects from healthy population were analyzed for total cholesterol, triglyceride and three major fractions of lipoproteins i.e. high-density lipoprotein cholesterol, low lipoprotein cholesterol and very low-density lipoprotein cholesterol. The values obtained were (in mg/dl) 165.7±30.2,88.36±31.2, 44.86±10.68, 101.66±29.8 and 18.11±7.35 respectively. When these subjects were grouped according to the age and sex, no appropriate differences were observed between most of the groups. Triglycerides were found to be low and HDL cholesterol was high in female when compared with male of similar age. Beyond age 40 years cholesterol level and low density lipoprotein cholesterol was found to be gradually increased in case of women. Minor difference was observed with dietary pattern. Present study suggests that clinical evaluation of patient should be made on the basis of these reference values for Western Maharashtra population.  相似文献   
26.
We analyzed over 100,000 student evaluations of instruction over 4 years in the college of business at a major public university. We found that the original instrument that was validated about 20 years ago is still valid, with factor analysis showing that the six underlying dimensions used in the instrument remained relatively intact. Also, we found that the relative importance of those six factors in the overall assessment of instruction changed over the past two decades, reflecting changes in the expectations of the current millennial generation of students. The results were consistent across four subgroups studied—Undergraduate Core, Undergraduate Noncore, Graduate Core, and Graduate Noncore classes, with minor differences. Student Motivation (the instructor's ability to motivate students) and grading/assignments (fairness and objectivity of grading practices) have superseded presentation ability in relative importance as indicators of overall teaching effectiveness. Our study has implications for teachers in terms of the appropriate areas to focus on for improving their teaching practices.  相似文献   
27.
An investigation was undertaken to study the composite effect of a package of certain curricular strategies on some cognitive and non‐cognitive characteristics of rural primary school students. The present article lists the results pertaining to one variable, i.e. study habits. The sample consisted of three groups of class V students. One group was taught using the package programme while the other two were given instruction through their regular teachers found to teach without the effective use of selected curricular strategies. The results indicated that the experimental group exhibited a significantly increased level of study habits in comparison to control group I and control group II while the two control groups exhibited an equal level of study habits. Further, the experimental and control group I exhibited a significantly increased level of study habits at the end of the academic session as compared to the beginning of the session whereas there was no significant change in the level of study habits of control group II.  相似文献   
28.
The study aimed to investigate whether heart-type fatty acid binding protein (H-FABP) measurement provides additional diagnostic value to that of conventional cardiac markers in acute myocardial infarction (AMI) within first 6 h after the onset of symptoms. The study included 120 subjects: 60 AMI cases and 60 age and sex matched controls. The cases and controls were further divided into 2 subgroups depending on the time since onset of chest pain as (1) subjects within 3 h and (2) between 3 and 6 h of onset of chest pain. In all the cases and controls, serum H-FABP concentration was measured by Immunoturbidimetric method, serum Troponin I and myoglobin concentrations by Chemiluminescence immunoassay and serum CK-MB concentration by Immuno-inhibition method. The sensitivity, specificity, positive and negative predictive values of H-FABP were significantly greater than CK-MB and myoglobin but were lesser than Troponin I in patients with suspected AMI in both within 3 h and 3–6 h groups. Receiver operating characteristic curves demonstrated greatest diagnostic ability for Troponin I (AUC = 0.99, p < 0.001) followed by H-FABP (AUC = 0.906, p < 0.001) within 3 h and 3–6 h after the onset of chest pain. In conclusion, the diagnostic value of H-FABP is greater than CK-MB and myoglobin but slightly lesser than troponin I for the early diagnosis of AMI within first 6 h of chest pain. H-FABP can be used as an additional diagnostic tool for the early diagnosis of AMI along with troponin I.  相似文献   
29.
The objective of the study was to estimate the serum concentrations of oxidative stress markers-lipid hydroperoxide (MDA-Malondialdehyde), lactate dehydrogenase (LDH), nitrite; and ferric reducing antioxidant power (FRAP) — a measure of total antioxidant capacity in serum. Serum nitrite levels were high in fertile women than in infertile women (p<0.001), whereas MDA was high in infertile women than in fertile group (p<0.018). On classifying the entire group of women with infertility based on the etiology, serum MDA and LDH levels were higher in women with infertility due to unexplained factor than in women with other causes contributing to infertility compared to controls (p<0.001, p<0.02). A positive correlation among serum prolactin and nitrite suggested that hyperprolactinemia could contribute to infertility by inducing oxidative damage. Serum FRAP levels showed no significant difference in the groups studied. Lipid peroxidation was high in women with unexplained infertility which may be due to hyperprolactinemia.  相似文献   
30.
Abstract

The threats to traditional cultural landscapes and the concomitant demands from society for remedial landscape management represent a new challenge for agricultural education. The research described here examined the extent to which relevant landscape management skills and knowledge are transferred to would-be farmers (if at all) within the Austrian agricultural school system. A plurilateral approach was taken, involving a standardised text evaluation of curricula (as defined in legislative documents), examination of further vocational training programmes for teachers, and investigation of the actual teaching situation in selected schools. This combination of methods produced a comprehensive overview of the situation in agricultural schools and academies with regard to landscape management teaching. The teaching programmes prescribed by law and the actual programmes carried out by teachers were compared with a theoretical ‘best-case’ programme for teaching landscape management, and this revealed considerable shortcomings in current teaching. The research also identified potential constraints to the integration of landscape management elements within the agricultural school system.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号