Pleurotus sajor-caju (Fr.) Singer was cultivated on selected agro wastes viz. cotton stalks, groundnut haulms, soybean straw, pigeon pea stalks and leaves and wheat straw, alone or in combinations. Cotton stalks, pigeon pea stalks and wheat straw alone or in combination were found to be more suitable than groundnut haulms and soybean straw for the cultivation. Organic supplements such as groundnut oilseed cake, gram powder and rice bran not only affected growth parameters but also increased yields. Thus bioconversion of lignocellulosic biomass by P. sajor-caju offers a promising way to convert low quality biomass into an improved human food. 相似文献
This paper discusses the controller synthesis problem of a nonlinear networked controlled system subject to delays in the measurement and actuation channels. The communication through the network also suffers non-stationary packet dropouts. The bounded nonlinearities in the plant state satisfy Lipschitz conditions. A Lyapunov function is developed for the closed-loop system considering dynamic output feedback and the resulting stabilization conditions are drawn in the form of linear matrix inequalities to ensure that the system is exponentially stable in the mean-square sense. The developed conditions are represented in the form of a convex optimization problem and the results are tested by simulation on a quadruple-tank process. 相似文献
Nitric oxide (NO) a free radical having both cytoprotective as well as tumor promoting agent is formed from l-arginine by converting it to l-citrulline via nitric oxide synthase enzymes. The reaction product of nitric oxide with superoxide generates potent oxidizing
agent, peroxynitrite which is the main mediator of tissue and cellular injury. Peroxynitrite is reactive towards many biomolecules
which includes amino acids, nucleic acid bases; metal containing compounds, etc. NO metabolites may play a key role in mediating
many of the genotoxic/carcinogenic effects as DNA damage, protein or lipid modification, etc. The basic reactions of nitric
oxide can be divided as direct effect of the radical where it alone plays a role in either damaging or protecting the cell
milieu and an indirect effect in which the byproducts of nitric oxide formed by convergence of two independent radical generating
pathways play the role in biological reactions which mainly involve oxidative and nitrosative stress. Nitric oxide is also
capable of directly interacting with mitochondria through inhibition of respiration or by permeability transition. Reaction
of nitric oxide with metal ions include its direct interaction with the metals or with oxo complexes thereby reducing them
to lower valent state. Excessive production of nitric oxide can be studied by inhibiting the synthetic pathway of nitric oxide
using both selective or specific nitric oxide synthase inhibitor or non-selective nitric oxide synthase inhibitor with respect
to isoforms of nitric oxide. 相似文献
This paper presents the development of an Argument-Learning System （ALES）. The idea is based on the AIF （argumentation interchange format） ontology using ＂Walton theory＂. ALES uses different mining techniques to manage a highly structured arguments repository. This repository was designed, developed and implemented by the authors. The aim is to extend the previous framework proposed by developing an intelligent tutoring environment for argument learning that aims to： （1） guide the students during argument learning; （2） aid in improving the students＇ argument skills; and （3） offer an argument classifier agent that retrieves the most relevant results to the subject of search. This paper focuses on the environment development specifying the status of each of the constituent modules. 相似文献
The use of Bluetooth Low Energy (BLE) beacons is becoming widespread for context-aware learning environments. This technology can be used in indoor and outdoor settings such as museums, shops, home and schools in order to identify the location of learners and their contexts. Specifically, in the constructivist view of learning, learners can use such sensing technology for constructing knowledge and experiencing learning at any time, anywhere. However, exploration of such technology has been limited in the constructivist context-aware ubiquitous learning (U-learning) literature. For this purpose, the authors evaluated two android-based U-learning applications: one was an outdoor learning environment in a garden, the other was about locating books in a library. The applications were implemented and tested with school and university students. The qualitative results are presented in this article, and show how such sensing technology is promising for both pedagogical environments. 相似文献
ABSTRACT The global spread of finance capitalism has ushered in a speculative nature of currency trade and has given rise to new forms of subjectivity. Narrowing the ethnographic gaze on a thirty-seven year old currency trader in Karachi, this paper advances two arguments. The first argument relates to the materiality of foreign exchange and their effects on traders’ bodies. In spot trading, the currency traders experience foreign currency as an affective quality breathing down heavily on the senses. The second argument points to an interconnected nature of foreign exchange markets. Using Knorr Cetina and Breugger's notion of ‘global microstructures,’ I demonstrate the ways in which a currency trader, operating in a post-9/11 counter-terrorist surveillance milieu in the country, negotiates the micro and global scales of economy. Grounded in ethnographic research in Pakistan, this paper explores the ways in which foreign currency, especially of the metropole, is circulated, exchanged, and imagined in a postcolonial context, and hence contributes to an emerging scholarship of anthropology of money and finance. 相似文献
Young people between the ages of 10 and 19 make up 23% of Pakistan's population. In Pakistan, young people face many challenges in terms of sexual and reproductive health (SRH) issues. These include early marriage and pregnancy, low use of contraception, use of unsafe abortion, lack of relevant information and poor knowledge about bodily development including puberty and menstruation, sexuality, reproduction and HIV. This paper examines the scale-up of a rights-based, life skills-based education programme during the period from 2004 until 2013, which included comprehensive education about SRH issues. The programme was introduced by Rutgers WPF Pakistan in a total of 1188 schools. Introduction and scale-up were made possible by a combination of attributes among the organisations leading the development of the programme and the users. The main challenge, which related to the conservative operating environment in which the programme was first introduced, was addressed through a multiplicity of media and advocacy activities in the community, among parents, and by involving teachers, school administrators, district education departments and Muslim scholars in the development and review of the curriculum. The scale-up of a comprehensive sexuality education programme that targets young people in a conservative Muslim country is possible when there is careful curriculum design and materials and approaches are developed in close collaboration with key stakeholders. 相似文献
This study evaluated effect of mental rotation (MR) training on learning outcomes and explored effectiveness of teaching via three-dimensional (3D) software among medical students with diverse spatial intelligence. Data from n = 67 student volunteers were included. A preliminary test was conducted to obtain baseline level of MR competency and was utilized to assign participants to two experimental conditions, i.e., trained group (n = 25) and untrained group (n = 42). Data on the effectiveness of training were collected to measure participants’ speed and accuracy in performing various MR activities. Six weeks later, a large class format (LCF) session was conducted for all students using 3D software. The usefulness of technology-assisted learning at the LCF was evaluated via a pre- and post-test. Students’ feedback regarding MR training and use of 3D software was acquired through questionnaires. MR scores of the trainees improved from 25.9±4.6 points to 28.1±4.4 (P = 0.011) while time taken to complete the tasks reduced from 20.9±3.9 to 12.2±4.4 minutes. Males scored higher than females in all components (P = 0.016). Further, higher pre- and post-test scores were observed in trained (9.0±1.9 and 12.3±1.6) versus untrained group (7.8±1.8; 10.8±1.8). Although mixed-design analysis of variance suggested significant difference in their test scores (P < 0.001), both groups reported similar trend in improvement by means of 3D software (P = 0.54). Ninety-seven percent of students reported technology-assisted learning as an effective means of instruction and found use of 3D software superior to plastic models. Software based on 3D technologies could be adopted as an effective teaching pedagogy to support learning across students with diverse levels of mental rotation abilities. 相似文献
The research reported here was part of a large study of the impact of age, disability, race and sex on the teaching profession in England. The basic question asked in this research was how do these factors interact with career aspirations and achievements of classteachers, promoted teachers and headteachers? There were three different data sources: a large postal survey drawn from diverse geographic regions across England with over 2000 respondents; face‐to‐face individual interviews with over 100 teachers in 18 case study schools from across all of the main regions of England; discussions with special interest groups of teachers. Not surprisingly, the answer to the above question was complex. Nonetheless, the paper's conclusion highlights some of the noteworthy themes across this broad sample of teachers from primary, secondary and special schools.
Les travaux de recherche décris dans cet article ont fait partie d'une large étude sur l'impact de l'age, des handicaps, de l'origine ethnique et du genre sur les professions de l'enseignement. L'une des questions abordées dans cette recherche était de savoir comment ces facteurs interagissaient avec les aspirations professionnelles et les carrières des enseignants, administratifs et chefs d'établissement. Trois principales sources d'information ont été utilisées: un sondage par courrier de plus de 2000 personnes, couvrant différentes régions géographiques de l'Angleterre; des entretiens individuels avec une centaine d'enseignants de 18 écoles cibles, reparties sur les principales régions de l'Angleterre; des discussions avec des groupes de travail d'enseignants. De manière non surprenante, la réponse à la question ci‐dessus s'est avérée complexe. Néanmoins, cet article met en évidence un ensemble de thèmes significatifs à travers ce large groupe d'enseignants issus du primaire, du secondaire et d'institutions spécialisées.
La investigación que se presenta aquí formó parte de un largo estudio sobre el impacto que tenía la edad, discapacidad, diferencias de etnia y género en la profesión de maestro en Inglaterra. Una de las principales cuestiones a contestar en la presente investigación fue cómo estos factores interactúan en las aspiraciones profesionales de maestros, jefes del departamento y directores, se presentan en este artículo. Hubo tres principales fuentes de datos. Estas incluían: una amplia encuesta por correo la cual tuvo en cuenta diversas regiones de la geografía de Inglaterra, con cerca de unas 2000 personas encuestadas; entrevistas individuales cara a cara a unos 100 maestros en 18 estudios de casos de escuelas a través de todas las principales regiones de Inglaterra; y discusiones con grupos interesantes de maestros. No nos debe sorprender que las respuestas a las preguntas comentadas anteriormente fueran complejas de resolver. De todas formas las conclusiones del artículo dan luz a algunos de los temas significativos a través de la amplia muestra de maestros de escuelas de primaria, secundaria y escuelas especiales.
Die hier präsentierte Forschungsarbeit war Teil einer umfassenden Studie, die sich mit der Auswirkung von Alter, Behinderung, ethnischer Herkunft und Geschlecht auf den Lehrberuf in England auseinandersetzt. Die wesentliche Frage, die in dieser Forschungsarbeit gestellt wurde, lautete wie folgt: wie wirken sich genannte Faktoren auf Karriereaspirationen und Leistungen von Klassenlehrern, beförderten Lehrern und Schulleitern aus? Die Daten wurden aus drei Hauptquellen bezogen; dazu gehören: eine umfassende, geographisch breitgefächerte Postumfrage in England, auf die über 2000 Befragte antworteten; persönliche Gespräche mit über 100 Lehrern aus 18 zu Fallstudien herangezogenen Schulen in den Haupregionen Englands; und Diskussionen mit Lehrern, die bestimmte Interessengruppen vertreten. Die Antwort zu der oben genannten Frage war erwartungsgemäss komplex. Nichtsdestoweniger werden in dieser Arbeit einige der Themen hervorgehoben, die Lehrer aus dem Primär‐, Sekundär‐ und Sonderschulbereich für besonders erwähnenswert hielten. 相似文献
