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Search Results: 1 - 10 of 719470 matches for " M. A. KHAN "
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Pakistan Veterinary Journal , 2006,
Abstract: No Abstract
The Impact of Active Learning on Students’ Academic Performance  [PDF]
Chadia A. Aji, M. Javed Khan
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.73017
The empirical assessments of the traditional teaching approach of lecturing in the undergraduate classroom indicate its ineffectiveness in the learning process. This traditional pedagogy has been identified as one of the major reasons adversely impacting student engagement and motivation, especially in the science, technology, engineering and mathematics (STEM) fields. Research on learning provides strong evidence that active-learning can have a positive impact on student learning outcomes. The biggest challenge with incorporating active-learning strategies in the classroom is the time constraint of the traditional class period. One of the approaches that is finding increasing acceptance among educators is the use of the flipped classroom. This paper shares details of the impact of active-learning on academic achievement of students from groups underrepresented in STEM in introductory mathematics and aerospace engineering courses. The results indicated that the performance of students who took the courses with the active learning improved.
Lie ideals and generalized derivations in sigma-prime rings-II
M. S. Khan,M. A. Khan
International Journal of Algebra , 2012,
Pollution of water resources due to industrialization in arid zone of Rajasthan, India
环境科学学报(英文版) , 2001,
Abstract: IntroductionUrbanizationandindustrialization,thekeystodevelopment,havedistortedenvironmentandtheintensityofthisdistortionwasfeltwhenitexceededthelimitbeyondwhichitbecameirreparable.Water,thegreatestsolvent,hasmanyrolestoplayinbothurbanandindustrialdeve…
Clinico-epidemiological and socio-behavioral study of people living with HIV/AIDS
Khan M,Sehgal A
Indian Journal of Psychological Medicine , 2010,
Abstract: Although India is in the grip of HIV/AIDS epidemic, not much information is available on clinico-epidemiological and socio-behavioral aspects of people living with HIV/AIDS (PLWHA). This study analyzed these features using standard methodologies in 82 HIV sero-positives, AIDS patients attending ART clinic of three major government hospitals of Delhi. Majority of the patients (73%) were found to be young (<40 years) and married (79%). As high as 91.5% came from low socio-economic class and more than 95% acquired HIV transmission through heterosexual routes. A large proportion (63%) of these patients reported an extremely high level of anxiety, moderate level of stress and a borderline level of clinical depression. While most of the patients (72%) were well-adjusted with the ART, the rest of the patients reported difference in making adjustment with the treatment schedules. The study suggests that counseling and supportive therapy could play a pivotal role in controlling anxiety, stress, depression and rehabilitating people with HIV/AIDS.
Cadmium Toxicity in Plants and Role of Mineral Nutrients in Its Alleviation  [PDF]
Rahat Nazar, Noushina Iqbal, Asim Masood, M. Iqbal R. Khan, Shabina Syeed, Nafees A. Khan
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.310178
Abstract: Cadmium (Cd) is a toxic heavy metal that enters the environment through various anthropogenic sources, and inhibits plant growth and development. Cadmium toxicity may result from disturbance in plant metabolism as a consequence of disturbance in the uptake and translocation of mineral nutrients. Plant nutrients and Cd compete for the same transporters and, therefore, presence of Cd results in mineral nutrients deficiency. The optimization of mineral nutrients under Cd stress could reduce Cd toxicity by greater availability at the transport site resulting in reduced accumulation of Cd, and could also alleviate Cd-induced toxic effects by enhancing biochemical reactions and physiological processes in plants. In the present review the role of plant macro, micro and beneficial elements in alleviating Cd stress in crop plants is discussed.
An Investigation of the Vegetative Anatomy of Piper sarmentosum, and a Comparison with the Anatomy of Piper betle (Piperaceae)  [PDF]
Vijayasankar Raman, Ahmed M. Galal, Ikhlas A. Khan
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.38137
Abstract: This paper describes the detailed anatomy and micromorphology of the vegetative parts of Piper sarmentosum Roxb. (synonym, P. lolot C.DC.), which is a southeast Asian medicinal plant valued for its medicinal and culinary uses. The study also compares the anatomy of the leaf, petiole, stem and root of P. sarmentosum with those of the well-characterized P. betle L. The leaves of both the species are morphologically comparable and have similar culinary uses. The present study showed that the leaves of both the species possess more or less comparable anatomical features with a few differences; whereas, the microscopic features of the petiole, stem, and root of the two species are distinctive.
Some commutativity results for certain rings
M. A. Khan,A. Madugu
International Journal of Algebra , 2013,
Structural and Magnetic Properties of Cr3+ Doped Mg Ferrites  [PDF]
Faizun Nesa, A. K. M. Zakaria, M. A. Saeed Khan, S. M. Yunus, A. K. Das, S.-G. Eriksson, M. N. I. Khan, M. A. Hakim
World Journal of Condensed Matter Physics (WJCMP) , 2012, DOI: 10.4236/wjcmp.2012.21005
Abstract: The polycrystalline MgCrxFe2-xO4 ferrites (0.0 ? x ? 1.0) were prepared by conventional solid state ceramic sintering technique in air at 1300?C. X-ray diffraction experiments were carried out on all the samples in order to characterize the materials at room temperature. The X-ray diffraction patterns showed sharp peaks indicating the formation of single phased cubic spinel structure. The lattice parameters of the samples were determined from the X-ray diffraction data using Nelson-Riley extrapolation method. It was found that the lattice parameter decreased with increasing Cr concen- tration obeying Vegard’s law. Magnetic properties of the samples were measured using an Impedance Analyzer. Real and imaginary parts of the complex permeability, loss factor and quality factor were measured as the function of frequency at three different sintering temperatures 1250?C, 1300?C and 1350?C for all the samples in the frequency range 1 kHz to 13 MHz. Frequency stability of the real part of permeability increases with increasing Cr concentration and also with sintering temperature. Imaginary part of permeability decreases with increasing frequency and increased with increasing both of the Cr content and sintering temperature. Loss factor decreased with increasing frequency while the quality factor (Q) increased with increasing frequency for all the samples. The temperature de- pendence of initial permeability was measured for all the samples sintered at 1300?C. The Curie temperature (Tc) was determined from the -T curves. The values of Tc were found to be 733 K, 657 K, 583 K, 468 K, 400 K and 317 K for x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0, respectively.
Genetic and Phenotypic (Co)variance for Yearling Weight and Post-weaning Growth Rate in Bhagnari Droughtmaster Calves
M. S. Khan,M. Younas,M. A. Khan
Pakistan Journal of Biological Sciences , 1998,
Abstract: Heritabilities of and correlations between yearling weight and post-weaning growth rate in Bhagnari and its crosses with Australian Droughtmaster cattle in Balochistan were estimated. Out of 1118 weaning weight observations with sire identification, only 136 had yearling weight recorded on them. The overall mean for the yearling weight was 151.5 ± 38.9 kg while post-weaning growth rate averaged 261 ± 156 gm. Heritability of the traits estimated by paternal half-sib correlation was 0.19±0.24 and 0.03±0.20, respectively. Very large standard errors reflected the scarcity of data points. Both the traits were highly positively correlated (0.72) due to the fact that the growth rate was derived from the yearling weight. The environmental correlation had a similar magnitude (0.67) but genetic correlation was unrealistic.
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