Strategies for maintaining fitness and performance during Ramadan     

Kirkendall DT  Chaouachi A  Aziz AR  Chamari K 《Journal of sports sciences》2012,30(Z1):S103-S108

The Muslim athlete, whether living in a Muslim majority country or in a non-Muslim country, face unique challenges to faithfully follow one of the pillars of their faith - Ramadan - while attempting to maintain their participation in sports training and competition. There are conflicting reports on the effects of Ramadan on fitness and physical performance in general and in football in particular. In general, the impact of a brief daytime fast has minor effects on health or factors of physical fitness. Add physical training and now a new set of barriers to both performance and the observance of Ramadan begin to interact. Practising athletes have worked out strategies to cope with the rigors of Ramadan; strategies that have both physical (training modifications, dietary habits, rest and recovery) and emotional (patience, emotional preparations) domains. Carefully blending strategies like these can help the football player be true to their faith and follow the tenants of Ramadan hopefully, with a minimum of impact on their physical performance. In this context, science can help coaches improve their training plans and educate players with respect to the challenges presented by Ramadan to all levels of sports participation.  相似文献   

Mycorrhizoremediation an enhanced form of phytoremediation   总被引：2，自引：0，他引：2  

Khan AG 《Journal of Zhejiang University. Science. B》2006,7(7):503-514

Study of plant roots and the diversity of soil micro biota, such as bacteria, fungi and microfauna associated with them, is important for understanding the ecological complexities between diverse plants, microbes, soil and climates and their role in phytoremediation of contaminated soils. The arbuscular mycorrhizal fungi （AMF） are universal and ubiquitous rhizosphere mi- croflora forming symbiosis with plant roots and acting as biofertilizers, bioprotactants, and biodegraders. In addition to AMF, soils also contain various antagonistic and beneficial bacteria such as root pathogens, plant growth promoting rhizobacteria including free-living and symbiotic N-fixers, and mycorrhiza helping bacteria. Their potential role in phytoremediation of heavy metal （HM） contaminated soils and water is becoming evident although there is need to completely understand the ecological complexities of the plant-microbe-soil interactions and their better exploitation as consortia in remediation strategies employed for contaminated soils. These multitrophic root microbial associations deserve multi-disciplinary investigations using molecular, biochemical, and physiological techniques. Ecosystem restoration of heavy metal contaminated soils practices need to incorporate microbial biotechnology research and development. This review highlights the ecological complexity and diversity of plant-microbe-soil combinations, particularly AM and provides an overview on the recent developments in this area. It also discusses the role AMF play in phytorestoration of HM contaminated soils, i.e. mycorrhizoremediation.  相似文献   

Study of cellulolytic soil fungi and two nova species and new medium     

Khalid M  Yang WJ  Kishwar N  Rajput ZI  Arijo AG 《Journal of Zhejiang University. Science. B》2006,7(6):459-466

This study is aimed at identifying and determining the percentage of occurrence frequency of cellulose decomposing soil fungi. The soil samples were inoculated into culture plates prepared in Sabouraud medium under sterilized conditions and incubated at 30 ℃ for 4 to 7 d. The identified fungal species were incubated in self-designed cellulose medium for testing their cellulolytic ability. Forty-two species, including2 nova species, representing sixteen genera showed growth and sporulation in the cellulose medium. Most of the isolated species were from genus Aspergillus and Penicillium. Aspergillus niger and Mucor hiemalis showed highest occurrence frequency （45% and 36% respectively）, as these species were collected from about 80% of soil samples. Being agar free and cheaper, the new fungal medium designed showed results equivalent to Sabouraud medium.  相似文献   

The Impact of Treadle Pump Irrigation Technology Adoption on Poverty in Ghana     

Adetola Adeoti  Boubacar Barry  Regassa Namara  Abdul Kamara 《The Journal of Agricultural Education and Extension》2013,19(4):357-369

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A knowledge-based semantic framework for query expansion     

Jamal Abdul Nasir  Iraklis Varlamis  Samreen Ishfaq 《Information processing & management》2019,56(5):1605-1617

Searching for relevant material that satisfies the information need of a user, within a large document collection is a critical activity for web search engines. Query Expansion techniques are widely used by search engines for the disambiguation of user’s information need and for improving the information retrieval (IR) performance. Knowledge-based, corpus-based and relevance feedback, are the main QE techniques, that employ different approaches for expanding the user query with synonyms of the search terms (word synonymy) in order to bring more relevant documents and for filtering documents that contain search terms but with a different meaning (also known as word polysemy problem) than the user intended. This work, surveys existing query expansion techniques, highlights their strengths and limitations and introduces a new method that combines the power of knowledge-based or corpus-based techniques with that of relevance feedback. Experimental evaluation on three information retrieval benchmark datasets shows that the application of knowledge or corpus-based query expansion techniques on the results of the relevance feedback step improves the information retrieval performance, with knowledge-based techniques providing significantly better results than their simple relevance feedback alternatives in all sets.  相似文献   

Evaluating research performance of research institutes within Malaysian universities: an alternative assessment framework     

Ta  Goh Choo  Halim  Sharina Abdul  Azman  Norzaini  Komoo  Ibrahim  Mokhtar  Mazlin 《Tertiary Education and Management》2021,27(4):331-349

Tertiary Education and Management - Evaluation of research performance has significantly increased in importance, particularly in many emerging higher education systems. In Malaysia, the Malaysian...  相似文献   

The videoconferencing learning environment: Technology, interaction and learning intersect     

K. G. Saw  Omar Majid  N. Abdul Ghani  H. Atan  R. M. Idrus  Z. A. Rahman  K. E. Tan 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(3):475-485

This paper is a study on the interaction patterns of distance learners enrolled in the Mathematics and Physics programmes of Universiti Sains Malaysia in the videoconferencing learning environment (VCLE). Interaction patterns are analysed in six randomly chosen videoconferencing sessions within one academic year. The findings show there are more interactions in the graphics display mode than the video display mode. The graphics display mode, which involves the simultaneous interaction of the teacher, students and course materials, shows greater student engagement in the VCLE. The focus on a three-component interaction in distance learning differs from previous studies which looked at distinct types of two-component interactions. The types of communicative interaction, in particular the explanatory and cognitive types which are dominant in the graphics display mode, are discussed within the construct of learning. The higher number of teacher-initiated interactions may also imply that the teacher plays a crucial role in creating and maintaining a community of inquiry focused on exploring and developing content as well as giving feedback on concepts, ideas or solutions.  相似文献   

基于信息通信技术的开放与远程学习——在“2008世界开放与远程教育论坛”上的主题报告     

阿布杜拉·罕  怀章翠 《开放教育研究》2008,14(6):21-24

非常感谢中国联合国教科文组织全国委员会的盛情邀请,对于联合国教科文组织每位成员细致人微的工作,我都赞叹不已。在此,非常感谢你们如此出色的工作,同时与这样的团队及成员合作我感到非常愉快,而且常受益匪浅。我已有七八年的时间没有从事开放与远程学习领域的工作,但我确信这个领域已经取得了长足的发展,因此站在这里我感到有些不安,报告中的不妥之处还请大家谅解。  相似文献   

Impact of light intensity on flowering time and plant quality of Antirrhinum majus L.cultivar Chimes White     

MUNIR Muhammad  JAMIL Muhammad  BALOCH Jalal-ud-din  KHATTAK Khalid Rehman 《浙江大学学报(A卷英文版)》2004,5(4)

Shades of different light intensities (29%, 43%, 54%, 60% or 68%) along with control (no shade) were studied to observe their effects on the flowering time and plant quality. A hyperbolic relationship was observed between different light intensities under shade, and time to flowering. The total number of flower buds showed a curvilinear relationship with light intensities. Growth parameters related to the plant characteristics such as plant height, leaf area and plant fresh weight were improved under shading treatments at the expense of flowering time and number of flower buds. However, both linear and polynomial models applied assumed that cultivar Chimes White was equally sensitive to light intensity throughout development.  相似文献   

An assessment of the academic and social integration as perceived by the students in the University of Papua New Guinea     

Muhammad Abdul Mannan 《Higher Education》2001,41(3):283-298

This study assesses the current and ideal levelsof academic and social integration within the University of PapuaNew Guinea as perceived by the students. In order to reducestudent attrition through developing an appropriate attritionpolicy and improving services, a comprehensive picture of thecurrent and ideal academic and social integration climate in theUniversity of Papua New Guinea was necessary. Previousattrition/retention research has not adequately described thevarying degrees of group differences in students' integrationprocess. Using the Tinto model and research instruments thatoperationalised the model, an institutional academic and socialintegration assessment instrument was developed for measuring theperceived current and ideal integration climate. Respondent'sperceived ideal ratings for 24 items representing five dimensionsof academic and social integration were higher than for thecurrent ratings. Significant differences were found between thecurrent and ideal perceptions of student groups in respect of a)students' informal contact with faculty; b) faculty concern forstudents' development and teaching and c) extra curricularactivities. Differences were found between the perceived ratingsof student groups on the basis of year of studies. Implicationsfor policy directives and discriminatory service delivery arealso discussed.  相似文献