Additive effects due to biochar and endophyte application enable soybean to enhance nutrient uptake and modulate nutritional parameters     

Muhammad Waqas  Yoon-Ha Kim  Abdul Latif Khan  Raheem Shahzad  Sajjad Asaf  Muhammad Hamayun  Sang-Mo Kang  Muhammad Aaqil Khan  In-Jung Lee 《Journal of Zhejiang University. Science. B》2017,18(2):109-124

We studied the effects of hardwood-derived biochar (BC) and the phytohormone-producing endophyte Galactomyces geotrichum WLL1 in soybean (Glycine max (L.) Merr.) with respect to basic, macro- and micronutrient uptakes and assimilations, and their subsequent effects on the regulation of functional amino acids, isoflavones, fatty acid composition, total sugar contents, total phenolic contents, and 1,1-diphenyl-2-picrylhydrazyl (DPPH)-scavenging activity. The assimilation of basic nutrients such as nitrogen was up-regulated, leaving carbon, oxygen, and hydrogen unaffected in BC+G. geotrichum-treated soybean plants. In comparison, the uptakes of macro- and micronutrients fluctuated in the individual or co-application of BC and G. geotrichum in soybean plant organs and rhizospheric substrate. Moreover, the same attribute was recorded for the regulation of functional amino acids, isoflavones, fatty acid composition, total sugar contents, total phenolic contents, and DPPH-scavenging activity. Collectively, these results showed that BC+G. geotrichum-treated soybean yielded better results than did the plants treated with individual applications. It was concluded that BC is an additional nutriment source and that the G. geotrichum acts as a plant biostimulating source and the effects of both are additive towards plant growth promotion. Strategies involving the incorporation of BC and endophytic symbiosis may help achieve eco-friendly agricultural production, thus reducing the excessive use of chemical agents.  相似文献   

A modified peer rating system to recognise rating skill as a learning outcome     

Violet Cheung-Blunden  Saera R. Khan 《Assessment & Evaluation in Higher Education》2018,43(1):58-67

The peer rating system used here advances the quantitative literacy goals outlined in the social sciences. We instituted a mid-semester intervention to teach rating skills and used an index to track longitudinal changes of skill mastery over the course of the semester. Seventy-four students in five advanced research classes followed the procedure of the existing peer rating system by completing reading assignments, writing reflections online, engaging in class discussions, rating their peers’ reflections and receiving feedback on their group effort. Peer ratings were then compared with each other and also with the instructor ratings to derive individualised indices of reliability and validity. These technical indicators enabled two rounds of assessment before and after a class-wide intervention. An omnibus test across the five classes showed a significant improvement in rating quality due to the intervention. Our courses not only met a quantitative learning outcome but also promised vocational competence.  相似文献   

Establishment of engineering laboratories for undergraduate and postgraduate studies     

Wasim Ahmed Khan  Saad Muhammad Rasheed Al-Doussari  A. H. M. Al-Kahtani 《European Journal of Engineering Education》2002,27(4):425-435

The importance of the laboratories for the study of engineering problems is manifold. At the undergraduate level it provides an opportunity for the students to get an impression of the basic principles of engineering. At the postgraduate level it becomes an instrument for advanced level study and for the solutions to real-life engineering problems. Level of emphasis by an individual engineering institution on basic engineering, interdisciplinary aspects of engineering and relevance to international, national and local industrial trends effects the policy to establish the engineering laboratories. However, a core facility, for the teaching of the most basic principals of relevant field of engineering should be a common feature of all the laboratories associated with individual subject area. In this research paper an approach for establishing engineering laboratories is presented. It discusses the relation between the syllabus of appropriate level of study and the equipment required in the laboratory, physical planning for the laboratory, sequential and parallel approaches for establishing the laboratories, the functional capacity of laboratories, the organizational flexibility of the laboratories, the cost factor and the recurring expenditure. It suggests ways of utilizing the laboratory for effective teaching and research through optimal use of the above factors.  相似文献   

蝶翼恋语     

陈俪俪 《海外英语》2003,(9):24-26

Tanya got out of the bed while the sun was still asleep.She looked outthe window;even the stars were lost in the dark.Mike,her husbandwas still in bed and so were her four kids.Even their sleep couldn’telude her from doing them service.She had to orchestrate her work tothe microscopic details.From pressing clothes to polishing shoes,findingmatching socks to arranging school bags,fixing up breakfast to preparingsnack-boxes,she was unthankfully supposed to make it all happen like a magicwand.And to her own compulsory fault,she did it all;like a magic wand. Life ran like a wheel.The circle started every morning and ended up latein the night,and then morning appeared again.There was no pause,no rest,not even a slight curve to insert change.She condemned herself for not ex-periencing even a thought of ever getting out of this circle.She had committedherself to the orbit of life.  相似文献   

Ethnic Diversity and Inclusive School Environments     

Adrienne Nishina  Jakeem Amir Lewis  Amy Bellmore  Melissa R. Witkow 《教育心理学家》2019,54(4):306-321

Inclusive school contexts can promote psychological and social adjustment and enhance learning among students. Changing demographics and 21st-century workplace needs suggest that ethnic diversity is one important dimension of inclusion to consider. This article presents 4 suggestions for how schools can facilitate inclusivity for ethnic diversity that are recommended to be employed in conjunction with one another: (a) school and classroom ethnic composition (i.e., increased ethnic diversity), (b) positive ethnic identity for ethnic minority students, (c) multicultural/diversity training and cooperative learning, and (d) the promotion of social competence and prosocial behaviors. Developmental considerations are discussed and a case is made that improving individual students’ functioning can ultimately promote inclusivity for all students. Assisting students to be ready and able to form friendships with peers from ethnically diverse backgrounds provides them with valuable experience and skills that they can carry forward to new educational, community, and workplace settings.  相似文献   

The philosophy of education: an introduction     

Kamran Khan 《Educational Research and Evaluation》2013,19(7):687-688

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What International Aid Organizations Can Learn From International Adult Learning: Experiences From Cambodia     

Kiumars Zarafshani  Amir Hossein Ali Baygi 《The Journal of Agricultural Education and Extension》2013,19(4):347-357

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Examination of the relationship between perfectionism and English achievement as mediated by foreign language classroom anxiety     

Farhad GhorbanDordinejad  Amir Hosein Farjad Nasab 《Asia Pacific Education Review》2013,14(4):603-614

There are a number of individual and affective factors which correlate foreign language learners’ achievement both positively and negatively. The aim of this study was to examine the relationship between perfectionism and English language achievement among high school third graders in Chenaran, a city in northeast of Iran, mediated by foreign language classroom anxiety. A sample of 239 students (110 males and 129 females) was assessed for their levels of perfectionism and foreign language anxiety using the Almost Perfect Scale-Revised and Foreign Language Classroom Anxiety Scale, respectively. Participants’ scores on their final English test were also used as the measurement of their English achievement. The results did not reveal strong correlations between perfectionism and participants’ English achievement (F = .515, p > .05); however, the mean English score of the participants was lower for maladaptive perfectionists. Also, foreign language classroom anxiety was found to be significantly and negatively correlated with English achievement (r = ?.357, p < .01). The results of analysis of variance revealed a significant positive association between perfectionism and foreign language anxiety, where maladaptive perfectionists were found to be more anxious than adaptive and non-perfectionists. Results did not support the hypothesis about foreign language anxiety as a mediator of the relationship between perfectionism and English achievement. Implications for both teachers and learners, and suggestions for further research are provided.  相似文献   

How many equivalent resistances?     

Sameen Ahmed Khan 《Resonance》2012,17(5):468-475

It is straightforward to construct the set of equivalent resistance for circuits constructed from a bunch of four or five equal resistors. But as the bunch size increases it becomes difficult to find the order of the set of equivalent resistances. Even the computer programs runs out of memory. Here we present an analytical result using simple mathematical machinery. The size of the set is shown to be less than 2.618 ⁿ .  相似文献   

Substrate channelling     

Danish Khan 《Resonance》2012,17(8):791-796

The fascinating process of channelling of metabolic intermediates through enzymes is discussed in this article. Often, the active sites of two enzymes that catalyse sequential reactions in a metabolic pathway are connected through an intra-molecular ??void?? ?? a sort of tunnel, lined by amino acids through which intermediates pass. Synergy between the subunits leads to a phenomenal increase in the overall rate of catalysis. There are enzymes with a single channel, some with multiple channels and some without any discrete channel/s, yet achieving high catalytic rates. Unravelling details about these natural tunnels of angstromdimensions has evoked great interest and curiosity in biochemists all over the world.  相似文献