Effect of seedling age and water depth on morphological and physiological aspects of transplanted rice under high temperature

INTRODUCTION Rice (Oryza sativa L.) is one of the most im-portant crops in Pakistan. It is the third largest crop interms of area and production after wheat and cotton.Although rice in Pakistan is consuming large acreage,Pakistan is still far behind other rice producingcountries. The average yield is very low (2 t/ha) ascompared to Egypt (8.4 t/ha) and USA (6.6 t/ha).There are many reasons for this low yield. The mostimportant are high temperature (40?50 °C), low hu-midity at …     

Some reflections on education for rural development

The article stresses the significance of anti-poverty oriented rural development for developing countries and the need to identify the educational implications of such a strategy. Some of the assumptions derived from contemporary experience in development, and in particular rural development, which are vital for understanding and formulating the role of education, are presented and analysed. The indicators used in the measurement of anti-poverty rural development bring clarity to the concept of interlinking development and education in concrete terms. Some features of education for rural development are discussed and the significance of four areas of educational activities underscored, namely, primary education, functional literacy, human resources development and education related to the world of work. The article is concluded by stressing the need for establishing firm linkages between educational and developmental infrastructures with special emphasis on nonformal education and its flexibility of approach.

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Zusammenfassung Der Nachdruck in diesem Artikel liegt auf der Bedeutung, die der armutsbekämpfenden Orientierung ländlicher Entwicklungsprogramme beizumessen ist, sowie auf der Notwendigkeit festzustellen, welche Implikationen sich aus einer solchen Strategie für das Erziehungswesen ergeben. Einige für das Verständnis und die Formulierung seiner Rolle entscheidende Voraussetzungen, abgeleitet aus neueren Erfahrungen mit Entwicklungsprogrammen, insbesondere ländlichen, werden vorgestellt und analysiert. Die für die Bemessung armutsbekämpfender ländlicher Entwicklung benutzten Indikatoren bringen auch Klarheit in das Konzept einer konkreten Verbindung von Entwicklung und Erziehung. Dann bespricht der Autor einige Besonderheiten der Erziehung für ländliche Entwicklung und unterstreicht dabei die Wichtigkeit von vier Gebieten der Erziehungsarbeit: Primarerziehung, funktionelle Alphabetisierung, Entwicklung von Arbeitskräften und auf die Arbeitswelt bezogene Erziehung. Zum Schluß hebt der Verfasser die Notwendigkeit hervor, die Infrastrukturen für Erziehung und Entwicklung fest miteinander zu verbinden, mit besonderer Betonung der nicht-formalen Erziehung und ihrer Flexibilität.

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Résumé L'auteur de cet article met en évidence la signification du développement rurale envisagé comme une lutte contre la pauvreté dans les pays en développement et il souligne la nécessité de découvrir les implications de l'éducation dans une telle stratégie. Il présente et analyse quelques-unes des inductions tirées de l'expérience contemporaine du développement, en particulier du développement rurale, indispensables à la compréhension et à la formulation du rôle de l'éducation. Les indicateurs utilisés pour mesurer le développement rural anti-pauvreté apportent aussi une clarté au principe de conjugaison de l'éducation et du développement en termes concrets. Ensuite l'auteur examine quelques traits de l'éducation pour le développement rural, mettant l'accent sur l'importance de quatre zones d'activités éducatives, à voir, l'enseignement primaire, l'alphabétisation fonctionnelle, le développement des ressources humaines et l'éducation reliée au monde du travail. Enfin il souligne la nécessité d'établir des liens solides entre les infrastructures de l'éducation et celles du développement, en accentuant particulièrement l'éducation non-formelle et la flexibilité de ces moyens.

     

阿拉伯国家高等教育的新进展

文章主要介绍了阿拉伯国家高等教育的最新进展，并就其未来发展应给予关注的问题做了初步探讨。     

Motivational predictors of young adolescents' participation in an outdoor adventure course: A self-determination theory approach

Abstract

Outdoor education is emerging as a compulsory component of the school curriculum in Singapore. As more and more young people are involved in outdoor education programmes, the motivational factors that influence students' participation in outdoor activities is an important area of study. The purpose of this study was to use the self-determination theory framework to examine post course satisfaction level among young adolescents. A total of 314 secondary school students aged from 12 to 16 years took part in the survey. Results showed that external regulation negatively predicted self-reported satisfaction whereas intrinsic motivation positively predicted participants' satisfaction levels of the course. It is highlighted that young adolescents should not be coerced into outdoor education programmes. They should be provided with a meaningful rationale for participation, given some autonomy for decision-making and to have a positive and enjoyable experience during the programme.     

The Use of Arabized Software Packages in Jordan University Libraries

This study reviews the higher education movement, and the development of Universities in Jordan. Academic libraries use of Arabized software packages (MINISIS and CDS/ISIS), rationale for selection, applications, services, problems, solutions, and future plans are surveyed. Types of hardware, staff, and material entries are discussed. The study samples included 20 libraries. All of 17 (85%) respondent libraries are computerized. Six (35·3%) use MINISIS, nine (52·9%) use CDS/ISIS, and two (11·8%) use customized packages. Systems are mostly employed in technical processing, reference services, bibliographies, and acquisitions. Adaptability to Arab libraries functions, handling of bi-lingual documents, and networking ability are the prime priority, inter alia , reasons for packages selection. Insufficient funds and equipment, and unskilled staff are the major hindrances which obstruct the full use of packages. This study stresses the need to develop packages conducive to meet particular Arab libraries demands, plans for manpower academic training, and the necessity for libraries linkage to networks.     

After Eighty Years: Experimental Study of Atmospheric Corrosion in the Metallic Dome of Hafez’s tomb,Shiraz, Iran

ABSTRACT

Hafez’s tomb was constructed on the grave of the well-known Iranian poet in Shiraz, in the 1930s. The dome of this monument is made of copper metal and has been exposed to the urban environment for 80 years. In this study, corrosion mechanisms and conservation conditions of the metallic dome of the Hafez’s tomb are investigated by analytical methods including optical microscopy, ICP-MS, SEM-EDX, and X-ray diffraction. The results showed that the dome is constructed from many copper sheets that are hammered to shape the dome. The corrosion products formed on the surface of copper sheets include copper oxide and copper trihydroxichlorides. In fact, the corrosion mechanism occurring in the metallic dome consists of copper oxidation and redeposition of copper II products because of reaction with air pollutants.     

Chlorella vulgaris triggers apoptosis in hepatocarcinogenesis-induced rats

Chlorella vulgaris (CV) has been reported to have antioxidant and anticancer properties. We evaluated the effect of CV on apoptotic regulator protein expression in liver cancer-induced rats. Male Wistar rats (200∼250 g) were divided into eight groups: control group (normal diet), CDE group (choline deficient diet supplemented with ethionine in drinking water to induce hepatocarcinogenesis), CV groups with three different doses of CV (50, 150, and 300 mg/kg body weight), and CDE groups treated with different doses of CV (50, 150, and 300 mg/kg body weight). Rats were sacrificed at various weeks and liver tissues were embedded in paraffin blocks for immunohistochemistry studies. CV, at increasing doses, decreased the expression of anti-apoptotic protein, Bcl-2, but increased the expression of pro-apoptotic protein, caspase 8, in CDE rats, which was correlated with decreased hepatoctyes proliferation and increased apoptosis as determined by bromodeoxy-uridine (BrdU) labeling and terminal deoxynucleotidyl transferase mediated dUTP nick-end labeling (TUNEL) assay, respectively. Our study shows that CV has definite chemopreventive effect by inducing apoptosis via decreasing the expression of Bcl-2 and increasing the expression of caspase 8 in hepatocarcinogenesis-induced rats. Project supported by Department of Biochemistry, Faculty of Medicine, UKM Medical Center, Universiti Kebangsaan Malaysia, and the Malaysian Ministry of Science and Technological Innovation (MOSTI)     

建立知识社会

人类社会正经历着向知识社会的转变;知识正日益成为经济发展和社会进步的核心因素.身处全球迈向知识社会的进程之中,我们目睹和亲历着世界性的合作、竞争、流动和创新.技术变革无疑是这一进程的强大驱动力之一;而在技术不断取得极大进步,知识与信息以空前的数量产生和极快的速度传播的同时,也存在着知识鸿沟或数字鸿沟现象.     

E-print depositing behavior of physicists and astronomers: An intradisciplinary study

This article investigates the e-print depositing behavior of physicists and astronomers. Fifty-six PhD students and staff at the Department of Physics and Astronomy at the University College London were interviewed. A survey was also carried out (47.1% response rate). The study investigates the relation between variables such as research area, type of research (theoretical, experimental and so on), and the amount of reading on the patterns of e-print depositing. The findings showed that clear intradisciplinary differences exist among different subfields of physics and astronomy.