Gamma-glutamyl-transpeptidase in lymphatic tissues of Mastomys natalensis during an infection with Acanthocheilonema viteae

During Acanthocheilonema viteae infection, the specific activity of gamma-glutamyltranspeptidase (gamma-GT) increased in peritoneal exudate cells and bone marrow and decreased in lymph nodes of Mastomys natalensis throughout the course of infection. However, though there was an increase in specific activity of gamma-GT in thymus and spleen during the prepatent phase of A. viteae infection, the level either returned to normal or decreased during the latent phase of infection. A close correlation was observed between the host's immune status during A. viteae infection and the level of gamma-GT in lymphoid tissues.     

运动的连续平直面上边界层流之解的渐近性质

Falkner-Skan方程描述磁场中连续平直面上不可压缩粘性流的边界层流,本文研究此方程初值问题之解的渐近性质。     

Encouraging Intercultural Communication Using an Action Research Approach

South Africa is 15 years into democracy, but difficult dialogues about race, ethnicity, and other cultural differences are hindered when students are developmentally unprepared to handle them. Although institutions of learning have been painfully aware of the racial, cultural and ethnic divides on their campuses, no real strategies or policies have been put into place to ensure integration. This study started with problems that my colleagues in the Faculty of Science at a university in South Africa were experiencing with the lack of interaction and communication among the first year students in their large and diverse classrooms. They were also concerned that their students did not know how to deal with diversity and they wanted to graduate students who would be successful in their professional careers in a multicultural environment. This study found that using an action research approach was particularly successful in teaching Communication and in encouraging intercultural communication as lessons learned could be built upon or learned from in order to plan the next phase of intervention. The continual interactions during the various phases typical of the action research approach used, enabled the unearthing of feelings, problems and issues which would otherwise not have surfaced in the normal classroom where students are merely lectured. By transforming method and methodology, students and educators were exposed to new and different ways of being. This paper therefore reports on how a course in Communication was developed to facilitate communication and interaction between the different cultures and race groups in a Science classroom using an action research approach.     

A note on the fowler's solution of the lane-emden equation of index 3

Zusammenfassung FürFowler's Lösung der Lane-Emden-Gleichung von Index 3 wird der Gültigkeitsbereich erweitert.     

Tissue specific biochemical alterations prior to spinning in the eri-silkworm,Philosamia ricini

Summary Silkgland, fatbody, hemolymph and midgut of eri-silkworm present tissue specific turnover in their biochemical correlates in preparation for spinning of the cocoon which is followed by larval-pupal transformation.Acknowledgment. The authors are thankful to Dr R. N. Singh, Principal, for providing the necessary facilities, to Dr A. B. Das, Zoology Dept. Visvabharti University for valuable suggestions and to Indian Council of Agricultural Research, New Delhi, India, for financial assistance.