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71.
Wen-dong Wang Nan-nan Zhang Warren Chanda Min Liu Syed Riaz ud Din Yun-peng Diao Lei Liu Jing Cao Xiao-li Wang Xing-yun Li An-hong Ning Min Huang Min-tao Zhong 《Journal of Zhejiang University. Science. B》2018,19(5):364-371
The aim of this study is to assess the antibacterial and anti-biofilm properties of the lipid extract from Mantidis ootheca against the gentamycin resistant Pseudomonas aeruginosa. The chemical composition of the lipid extract and its relative proportion were determined using the technique of gas chromatography coupled with mass spectrometry (GC-MS). Antibacterial susceptibility tests were performed using a disc diffusion assay and the minimum inhibition concentration (MIC) was determined by way of the agar dilution method. The anti-biofilm test was carried out with crystal violet staining and scanning electron microscopy (SEM). There were 16 compounds detected, and the most abundant components were sesquiterpenoids, monoterpenes, and trace aromatic compounds. The MIC for P. aeruginosa was 4 mg/ml and the eradication effect on preformed biofilms was established and compared with a ciprofloxacin control. The results of our study indicated that a lipid extract from M. ootheca could be used as a topical and antibacterial agent with anti-biofilm activity in the future. 相似文献
72.
The mobility of African students beyond national territories has become common worldwide. However, the underlying reasons motivating students to leave their countries of origin in pursuit of higher education in other developing nations and why these factors are important have not been fully explored. This study attempts to explore why and how African students travel to the United Arab Emirates for higher education. A push-pull factor theory of the international student’s choice of destination is developed to identify factors influencing the choices made by these students. The analytic hierarchy process is used to examine the relative importance of these factors. The findings of this quantitative study indicate that learning environment and geographic proximity are the two most important factors for African students, while other factors have a moderate impact. The findings contribute to a deeper and more comprehensive understanding of the needs and choices of existing and potential students from this continent, with a view to applying a segmentation approach to attract these students. 相似文献
73.
Syed Abbas 《Resonance》2017,22(1):51-60
Our attraction to another body increases if the body is symmetrical and in proportion. If a face or a structure is in proportion, we are more likely to notice it and find it beautiful. The universal ratio of beauty is the ‘Golden Ratio’, found in many structures. This ratio comes from Fibonacci numbers. In this article, we explore this concept along with its applications. 相似文献
74.
Abdul WAHAB Syed Aleem JAN Abdur RAUF Zia ur REHMAN Zahid KHAN Aftab AHMED Fatima SYED Sher Zaman SAFI Hamayun KHAN Muhammad IMRAN 《Journal of Zhejiang University. Science. B》2018,(2)
目的:本研究旨在测定Scandix pecten-veneris L.的植物素和评价其生物学潜力。方法:测定S.pecten-veneris提取物中植物素的含量,包括生物碱、黄酮、多酚和单宁。使用2,2-二苯基-1-苦肼基(DPPH)测定抗氧化活性;同时通过铁还原/抗氧化能力(FRAP)测定还原能力;使用琼脂扩散测定法评价对七种细菌和四种真菌菌株的抗微生物活性。同时,对脲酶、磷酸二酯酶-Ⅰ和过氧化氢酶-Ⅱ进行酶抑制研究。结论:沙门氏菌显示出适度的抗自由基活性;羟基自由基的潜能降至初始值的20%左右。S.pectenveneris多种提取物的抗氧化活性与总酚含量呈线性相关。S.pecten-veneris叶对金黄色葡萄球菌表现出最高的抑制活性;对白色念珠菌表现出到最高的抗真菌活性。植物提取物对脲酶的活性最有效;对磷酸二酯酶-Ⅰ和碳酸酐酶-Ⅱ显示出中等活性。结果表明,S.pecten-veneris具有良好的药用潜力,可用于治疗一些特定的疾病。 相似文献
75.
An evaluation of traditional admission standards in predicting Kuwait University students' academic performance 总被引：1，自引：0，他引：1
The purpose of this study was to evaluate the usefulness of the traditional admission standards utilized by Kuwait University in predicting students' academic performance. It was found that the established practice of using students' score in standardized secondary school examinations and branch of study (i.e. sciences or arts emphasis) to be highly predictive of their college cumulative grade point average. Moreover, it was established that students' secondary school scores reflect intellective as well as the non-intellective factors pertaining to students' background. 相似文献
76.
This Regular Feature explores the role of health science librarians in the coronavirus pandemic. COVID‐19 has spread rapidly all over the world. All major cities around the globe are in lockdown. In Pakistan, the first case was diagnosed on 26 February 2020, and currently, there are more than 2039 diagnosed cases and 26 deaths as on 31 March 2020. Across the country, there are further 12 000 suspected cases. This will undoubtedly increase if precautionary measures are not taken. Pakistani universities, colleges and schools were in lockdown. The role of university librarians in this emergency included raising awareness through public health education, providing support to medical staff, researchers and providing ongoing traditional services to regular library patrons in Pakistan. The Regular Feature also provides links to useful resources. JM. 相似文献
77.
Syed Zamberi Ahmad 《Assessment & Evaluation in Higher Education》2015,40(4):488-507
The aim of this research is to present the determinants of students’ perceptions of quality and experience of study at international branch campuses in Malaysia, a country that is set to become an academic hub in Asia. This study used a multi-method approach for data collection. The respondents comprised 245 students (both undergraduate and postgraduate) from six renowned international branch campuses operating in the country – three from Australia, two from the UK and one from India. In addition, a total of 21 face-to-face interviews were conducted after the survey. The results revealed that across the seven dimensions examined concerning education and non-education qualities – university reputation/image, programme quality, lecturers and teaching quality, student learning environment, effective use of technology, counselling and academic advising support, and social life (direct/indirect) facilities – the students were largely satisfied. The paper adds to the existing body of research on higher education service quality, particularly on students’ perceptions and expectations of international branch campuses. 相似文献
78.
Syed Saad Andaleeb 《亚洲交流杂志》2015,25(2):162-177
The television medium has occupied a dominant place in Bangladesh. With the unprecedented expansion of the television industry, questions are being raised about a palpable rise in market-oriented journalism (MOJ) in the country. This article examines the theoretical and empirical relationship between MOJ and credibility of TV news. Three surrogate factors of MOJ including independence, social role, and objectivity, along with TV news credibility are analyzed for insights. The findings suggest that there is a complex relationship between the two constructs. To improve the perception of credibility of TV news, our findings suggest an important role of public journalism as an alternative to MOJ. 相似文献
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80.
Syed R. Hussaini 《Resonance》2014,19(9):846-850
A short and easy method for the conversion of chair-like transition states into zig-zag projections using planar cyclohexane structures, and also the concepts of change of bond in the plane and group swap by rotation are described. Some common reactions where this method could be used to draw products include: aldol reaction, [3,3] sigmatropic rearrangements, allylation and crotylation of aldehydes, and formation of lithium enolates. 相似文献