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Urinary citric acid and calcium levels have been estimated in the urine of 20 normal healthy persons as well as 12 urinary stone patients. Inhibition efficiency of these urine samples towards the mineralisation of urinary stone forming minerals, viz., calcium phosphate, oxalate or carbonate, has been studied in an experimental model. Statistical correlation of the above data has been made by computing the coefficient of determination and unexplained variance. Clinico-biochemical indexing of calcium urolithiasis risk factor has been attempted in the light of the data.  相似文献   
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Abstract

This study analyses whether narrative skill and the perception of values/countervalues among students in primary school vary according to the structure (narrative vs non-narrative) of the episodes of fiction viewed, the grade age (third and sixth, 8–12 years old), sex and attentional level. With this purpose in mind, quantitative and qualitative methodologies were implemented. The most noteworthy results include the higher narrative skill and perception of values/countervalues of students in the sixth grade of primary school and those who viewed an episode with a narrative structure. The conclusion is that when addressing narrative skills and the education in values/countervalues from the formal and informal spheres, special importance should be attached to the structure of the fiction contents, given that it can to some extent help students make the messages meaningful in terms of values and countervalues.  相似文献   
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  总被引:2,自引:2,他引:0  
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People of Latin American descent make up the largest and fastest-growing minority group in the USA. Rates of pregnancy, childbirth, and sexually transmitted infections among people of Latin American descent are higher than among other ethnic groups. This paper builds on research that suggests that among families of Latin American descent, mothers have a particularly strong influence on the sexual attitudes and behaviours of their children, yet that parents of Latin American descent communicate less with their children about sex than parents of other ethnic groups. It examines the messages about sex women received as children in their countries of origin, and how these messages and their views of the USA influence the sexual education women provide for their children. On the basis of data from focus groups, we suggest that, in spite of the persistence of sexual silence, some women's self-reflective analyses of their own sexual education as well as their views of the USA as a sexually more open society contribute to their views of silence as dangerous and trigger more open communication with sons and daughters. Mothers hope to break the cycle of unwanted pregnancy by speaking with daughters about the consequences of menstruation and with sons about contraception.  相似文献   
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The aim of the present study was to conduct an analysis of TIMSS (Trends in International Mathematics and Science Study) 2003 database and to determine how negative school factors, such as aggression, are associated to the mathematical and science achievement of students. The analyses were conducted separately for national and international data. National analyses for Slovenia show significant associations between math and science achievement and the experience of aggressive behaviour. Students who experienced aggressive behaviour scored lower in math and science, both in the fourth and in the eighth grade. The results of the regression analysis show that negative factors, such as aggressive behaviour, are good predictors of educational achievement in Slovenia. International analyses for the selected countries (high‐ and low‐achieving countries from the whole TIMSS population) confirm that this type of finding is culturally impartial as well as valid for the level of achievement both in math and in science.  相似文献   
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Peer Observation of Teaching has raised a lot of interest as a device for quality enhancement of teaching. While much research has focused on its models, implementation schemes and feedback to the observed, little attention has been paid to what the observer actually sees and can learn from the observation. A multidisciplinary peer observation of teaching program is described, and its data is used to identify the pedagogical aspects to which lecturers pay more attention to when observing classes. The discussion addresses the valuable learning opportunities for observers provided by this program, as well as its usefulness in disseminating, sharing and clarifying quality teaching practices. The need for further research concerning teacher-student relationships and students’ engagement is also suggested.  相似文献   
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