Reduced plasma ascorbic acid and red cell glutathione contents in sickle cell disease—A preliminary report

Glutathione and ascorbic acid in erythrocytes are suggested to be essential in the detoxification of superoxide radicals and hydrogen peroxide formed during red cell metabolism. In sickle cell patients who are more prone to haemolysis have greater propensity for the formation of superoxide radical and hydrogen peroxide. In the present study conducted on sickle cell patients provide evidence for the presence of reduced levels of both ascorbic acid and glutathione in the red cells. This may seem to suggest that vitamin C supplementation may help such patients who are prone to haemolysis.     

阿尔泰额尔齐斯带东段酸性岩墙群地球化学特征及其地质意义

野外地质调查发现在阿尔泰南缘额尔齐斯构造带东段、额尔齐斯活动断裂与富蕴-锡泊渡断裂之间发育了一套未变形的酸性岩墙群.岩墙群侵位于海西期片麻岩化花岗岩和上石炭统深变质的额尔齐斯组岩层中,薄片鉴定和岩石地球化学分析确定为具有细晶结构的流纹斑岩.岩石的SiO2含量为70.9%～75.38%,K2O＋Na2O含量为7.55%～8.99%;大部分样品Na2O＞K2O,里特曼指数值为1.8～2.5之间,Al2O3=12.80%～14.53%,A/CNK=0.9～1.1,NK/A=0.7～0.9,具有准铝质-弱过铝质、低镁、高钾钠、低钙和锶、高（Fe）mol/（Mg）mol特点,具A型花岗岩类特点,属于亚碱性脉岩.岩石轻稀土富集,大离子亲石元素相对富集,具有明显的中等负铕异常,壳源特征明显.锆石U-Pb二次粒子微探针测年显示岩墙群形成于277～286Ma.推断岩墙是阿尔泰海西期造山运动结束后,在拉张构造环境下的地壳局部熔融产物.     

Validating the Watson Glaser Critical Thinking Appraisal

This study validated the Watson Glaser Critical Thinking Appraisal (WGCTA) on a sample of 273 private university students in Lebanon. For that purpose, evidence for construct validation was investigated through identifying the test’s factor structure and subscale total correlations, in addition to differences in scores by gender, different levels, and streams using a series of ANOVA tests. Evidence for the test’s reliability and concurrent validity was also collected. Moreover, students in five courses that emphasize critical thinking were pre–post tested using the WGCTA. Exploratory factor analysis revealed a unidimensional factor while results showed no significant differences in scores on the WGCTA between males and females or between students at different levels except for graduate students in the Business stream. Furthermore, results revealed significant differences for the senior students between different streams. Finally, results showed no statistically significant changes in the mean scores of students who were pre- and post-tested except for nursing students. The test’s significant correlations with various criterion measures provided evidence of its convergent and divergent validities. The results were discussed in terms of the nature of the construct itself, and the effects of training and effective instructional strategies on growth of critical thinking. Recommendations for future research were proposed.     

贯彻《规程》精神 挖掘图书馆职能

介绍了兴隆县教育局贯彻落实教育部颁发的《中小学图书馆(室)规程(修订)》精神，以卓有成效的举措挖潜图书馆职能，促进学生健康发展的实践与体会。     

Forecasting approaches in a higher education setting

Education and Information Technologies - Forecasting the enrollments of new students in bachelor’s systems became an urgent desire in the majority of higher education institutions. It...     

School leadership practices that promote effective whole school behaviour management: a study of Australian primary schools

When considering the management of student behaviour issues, a substantial body of literature, as well as logical common sense, points to the advantages of whole school policy over the individual efforts of teachers. Less is known, however, about the direct or indirect role school leadership plays in the development of well-implemented whole school behaviour management (WSBM) systems and policy in primary schools. This article explores elements of leadership practice likely to promote well-implemented WSBM, using an initial framework developed from related literature and applying it in a study of primary schools. The sample comprised 52 staff members from 31 government and non-government primary schools in 5 states and territories of Australia. Data were obtained from interviews which sought to gather information about how well each school’s WSBM was implemented. Results confirmed the theorised framework of leadership practices that encourage well-implemented WSBM. The article concludes with implications for future research and school leadership.     

“Growing together”: A Latvian retrospective of learning opportunities created in the cooperation among Nordic and Baltic adult educators

This article tells the extraordinary story of the cooperation among adult educators in five Nordic and three Baltic countries (NB8) which began in 1991 – the year when Latvia regained its independence. According to individuals who experienced the evolution of this cooperation from the beginning and were actively involved in the process of developing contemporary theories, policies and practices of adult education in Latvia, this cooperation resulted in the creation of a range of unique opportunities for learning and development. Latvian adult educators were engaged in many activities; they learned themselves, taught others, did research on adult education and developed a new system of adult education. What had started out as a “donorship” grew into a “partnership”. With hardly any published information about this cooperation to rely on, the authors of this article build their case using (1) their own memories of participation; (2) the information gained through interviews with key experts; and (3) a number of largely unpublished documents indicated in these interviews. Tracing the evolution of this cooperation, their study seeks to understand how learning opportunities were created and how they were used by adult educators in Latvia. Adopting an ecological (in terms of learning environment, relationships, agency, motivation and identity) sociocultural perspective on learning and learning opportunities, the authors analyse the quality of the learning opportunities created in the context of Nordic-Baltic cooperation, aiming to identify what makes international cooperation successful.     

The teaching practicum as a locus of multi-leveled,school-based transformation

The teaching practicum is often considered as a compulsory activity for enculturating new members into the teacher community by providing opportunities to experience teaching in action. However, the practicum is rarely conceptualized in terms of its transformative potential. In this study, we report the results of a two-year ethnography study of a teaching practicum in Brazil based on the {coteaching | cogenerative dialoguing} model. Our study shows that the practicum does not have to be a mere induction experience, but that it also may be the transformative locus for (a) the practicum participants (new teachers, school teachers, teacher educator, and students) and (b) school and university/school relationships, and (c) of the practicum activity itself. The results show the potential of the practicum to transform individual and collective agency. Implications are discussed for reorganizing the teaching practicum.