The correlation between pertinence and rate of citation duplication in multidatabase searches.     

J M Neway  F W Lancaster 《Journal of the American Society for Information Science》1983,34(4):292-293

The rate of citation duplication was examined in three databases: MEDLINE, BIOSIS, and LIFE SCIENCES COLLECTION. Duplicate citations were found to be more pertinent than unique citations. The duplicate citations came from a highly compact literature, while those from a single database were very widely scattered. The pertinent duplicated citations were more likely to be retrieved in searches that had more terms overall, had a higher percentage of thesaurus terms, and had terms which appeared in both title and abstract. These results suggest that the rate of duplication of citations in multidatabase searches may be used to rank output according to probable pertinence.  相似文献   

A biochemical study on the effect of Riboflavin on cataractous rat lenses. II Proteins and Glutathione     

Rita R. Vani  U. M. Rawal 《Indian journal of clinical biochemistry : IJCB》1994,9(2):96-97

Proteins and glutathione (GSH) levels were estimated in the experimental groups. Levels of both proteins and glutathione in the control and the treated groups were found to be significantly decreased compared to the normal group. The results show that supplementation of riboflavin has beneficial effect by alleviating the oxidant injuries to GSH and proteins, which are involved in the maintenance of transparency and protection of thiol groups of the lens. Thus, riboflavin has an active role in the lens metabolism and has a potential to improve the metabolic activity of the cataractous lenses.  相似文献   

Raised serum homocysteine levels in patients of coronary artery disease and the effect of vitamin B12 and folate on its concentration     

R Abraham  M Joseph John  R Calton  J Dhanoa 《Indian journal of clinical biochemistry : IJCB》2006,21(1):95-100

Homocysteine(Hcy) has been implicated as a novel risk factor of Coronary Artery Disease (CAD) among Asian Indians, but many studies done in India failed to reveal any direct correlation. It has also been reported that Folic acid and Vitamin B12 levels inversely affect serum levels of homocysteine. In this study, we looked at the levels of homocysteine among patients with CAD. The effect of Vitamin B12, Folate and other risk factors on homocysteine levels were also evaluated. Mean homocysteine levels in cases (22.81±13.9, n=70) were significantly higher (p=<0.001) than the controls (7.77±7.3, n=70). However no statistically significant correlation could be deduced between homocysteine Vitamin B12, and Folate. Cumulative analysis have indicated an increase in homocysteine levels among patients with CAD with every additional risk factor.  相似文献   

Browsing mixed structured and unstructured data     

Robert M. Losee 《Information processing & management》2006

Both structured and unstructured data, as well as structured data representing several different types of tuples, may be integrated into a single list for browsing or retrieval. Data may be arranged in the Gray code order of the features and metadata, producing optimal ordering for browsing. We provide several metrics for evaluating the performance of systems supporting browsing, given some constraints. Metadata and indexing terms are used for sorting keys and attributes for structured data, as well as for semi-structured or unstructured documents, images, media, etc. Economic and information theoretic models are suggested that enable the ordering to adapt to user preferences. Different relational structures and unstructured data may be integrated into a single, optimal ordering for browsing or for displaying tables in digital libraries, database management systems, or information retrieval systems. Adaptive displays of data are discussed.  相似文献   

Troponin T and Heart Type Fatty Acid Binding Protein (h-Fabp) as Biomarkers in Patients Presenting with Chest Pain     

Lakshmi Lavanya Reddy  Swarup A. V. Shah  Alpa J. Dherai  Chandrashekhar K. Ponde  Tester F. Ashavaid 《Indian journal of clinical biochemistry : IJCB》2016,31(1):87-92

Acute coronary syndrome (ACS) is a term for a range of clinical signs and symptoms suggestive of myocardial ischemia. It results in functional and structural changes and ultimately releasing protein from injured cardiomyocytes. These cardiac markers play a major role in diagnosis and prognosis of ACS. This study aims to assess the efficacy of heart type fatty acid binding protein (h-FABP) as a marker for ACS along with the routinely used hs-TropT. In our observational study, plasma h-FABP (cut-off 6.32 ng/ml) and routinely done hs-Trop T (cutoff 0.1 and 0.014 ng/ml) were estimated by immunometric laboratory assays in 88 patients with acute chest pain. Based on the clinical and laboratory test findings the patients were grouped into ACS (n = 41) and non-ACS (n = 47). The diagnostic sensitivity, specificity, NPV, PPV and ROC curve at 95 % CI were determined. Sensitivity of hs-TropT (0.1 ng/ml), hs-TropT (0.014 ng/ml) and h-FABP were 53, 86 and 78 % respectively and specificity for the same were 98, 73 and 70 % respectively. Sensitivity, specificity and NPV calculated for a cut-off combination of hs-TropT 0.014 ng/ml and h-FABP was 100, 51 and 100 % respectively. These results were substantiated by ROC analysis. Measurement of plasma h-FABP and hs-TropT together on admission appears to be more precise predictor of ACS rather than either hs-Trop T or h-FABP.  相似文献   

The high road : Ben Bova. 289 pages,diagrams, 6 × 9 in. Houghton-Mifflin,New York 1981. Price, $11.95.     

I.M. Levitt 《Journal of The Franklin Institute》1982,313(2):120-121

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Realization Theory of Ladder Networks in Terms of the Poles and Zeros of Reflection Coefficient and its Application to a Bandpass Matching Problem     

R. Srinivasagopalan 《Journal of The Franklin Institute》1972

Necessary and sufficient conditions for the realization of lossless, lowpass, ladder networks terminated by a resistance are presented, in terms of the poles and zeros of the reflection coefficient. These conditions yield explicit expressions for the element values. They are then extended to highpass networks. These results are next used in solving a bandpass matching problem and the limitations on the performance of matching networks due to constraints imposed by the load are discussed. A suitable example is worked out to illustrate the problem.  相似文献   

Knowledge management: a neuro-hemispherical view of the field     

Sharif  Amir M 《知识管理研究与实践》2006,4(1):70-72

Knowledge Management Research & Practice - The definition and subsequent use of knowledge within and across organisational and social contexts has been a vibrant and evolving growth area over...  相似文献   

Urinary iodine levels in three ecological zones of Bangladesh     

Salamatullah Quazi  M. Mohiduzzaman  Moududur R. Khan  B. Nahar  M. Mostafizur Rahman  M. Nurul Islam  M. Baquer  Chandrakant S. Pandav  Harun K. M. Yusuf 《Indian journal of clinical biochemistry : IJCB》1997,12(2):128-133

Urinary iodine levels in children (5–11 years) and in adult males and females (15–44 years) of three ecological zones (hilly, flood-prone and plains) of Bangladesh were analyzed to determine the status of biochemical iodine deficiency in the country. Data indicated that a large majority of the population all over Bangladesh have biochemical iodine deficiency urinary iodine excretion (UIE) less than the accepted cut-off level of 10 μg/dl. Adults were deficient to comparable degrees, 31.3% severely iodine deficient. The flood-prone zone was less affected: 71.7% children had iodine deficiency and 25% were severely deficient. Adults of this zone were less affected than the children. Iodine deficiency was least severe in the plain zone: 59.8% children were biochemically iodine deficient and of them 23.4% had UIE less than 2.0 μg/dl. In the case of the adults of this zone, 60.8% were biochemically iodine deficient and 20.6% had severe iodine deficiency. The results indicate that Bangladesh as a whole is an iodine deficient region, with the hilly zone being the most severely affected. Children were slightly more affected than the adults, and females were more affected than the males.  相似文献   

Biotechnology in the Netherlands: controversy or consensus?     

Guttelin JM 《Public understanding of science (Bristol, England)》2002,11(2):131-142

This paper addresses the issue of public perception of modern biotechnology in the Netherlands. Contrary to expectations, data from the 1999 Eurobarometer on biotechnology indicate that the position of the Dutch public in general is rather ambiguous, which is in contrast to many of its neighboring countries. The issue is described in terms of differences between the Netherlands and other European countries on political-economic, social-cultural, or media coverage indicators. On many indicators, the Dutch population differs from that of other European countries, and the Dutch opinion-leading media present a rather balanced perspective on modern biotechnology.  相似文献