848 research outputs found

    Response of walnut (Juglans regia L.) leaf aqueous extracts, on seed germination and seedling growth of wheat (Triticum aestivum L.) in agri-silvi system of Uttarakhand

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    Effect of different doses of aqueous extracts of walnut leaf was studied on germinating seeds and early seedling growth of wheat variety (cv. VL-616) recommended for hills under West Himalayan agri-silvi system. Seven treatments comprised of distilled water control (0%), 10%, 20%, 30%, 40%, 50% and 60% concentration of leaf extracts were treated. The effect of aqueous extracts was found inhibitive; indicate a direct proportional relationship with concentration dependent manner on seed germination and subsequent seedling growth of wheat. The wheat variety exhibited extent of phytotoxicity at 60% extracts application in comparison to untreated control. Invariably there was a decrease in first count, germination, seedling root and shoot length, seedling fresh and dry weight and vigour index with increasing aqueous extracts concentration on germinating wheat, however the shoot length was observed maximum at 60% concentration

    Evaluation of Patient Satisfaction in the Hypertension Management Clinic

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    Hypertension is a disease that afflicts 50 million Americans. Hypertension is a major risk factor that contributes to coronary, renal, and cerebral artery diseases. In an effort to better serve the patients afflicted with hypertension, a major health maintenance organization has developed a nurse managed hypertension clinic. This hypertension clinic functions in accordance with the Joint National Commission on Hypertension guidelines. This study evaluated the satisfaction of those patients that were served by the health maintenance organization\u27s clinic. The results of the study reflected that, overall, most of the patients surveyed were satisfied by the services they received in the clinic. Clinic services offered are education about diet, exercise and blood pressure medications. In addition, patients reported feeling comfortable with individual future blood pressure self-management. Recommendations determined from this study are for the establishment of additional hypertension clinics directed by autonomous nurse practitioners to assist in the care of hypertensive patients in the managed care setting

    Investigation of magneto-optical properties for optical fiber based devices

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    The digital traffic increased manifold over the years with increasing number of users of the internet from home based PCs to large businesses and research organizations. Electronic switching is a mature and sophisticated technology; however, the optical signals require conversion to electronic form in order to be switched. All optical switching eliminates the optical-electronic-optical conversions. Advances in all optical technologies coupled with rapidly rising demands for network bandwidths are fueling an increasing amount of research in the field of optical switching. Some of the current technologies are micro-electro-mechanical-systems technology and electro-optic technology. However the former technique is slow with switching times in the order of milliseconds and the latter method although fast is expensive.;Magneto-optical materials have been successfully used in optical devices such as isolators and circulators; however, they have overall led to very few optical fiber based applications especially in optical communications. The emphasis of this thesis is the investigation of Faraday rotation for small beam sizes that are compatible with standard single mode and multimode optical fibers. Rare earth iron garnet films suitable for optical communication wavelengths in the 1310 nm and 1550 nm range were used due to their high magneto-optical figures of merit, which is the ratio of optical absorption to Faraday rotation. The Faraday rotation for an optical beam size that is comparable to the domain width of the given magnetic material is different than the linear Faraday rotation expected for a large beam size. For the first time the nonlinearity of the Faraday rotation for a small optical beam size has been experimentally studied. The Stoner-Wohlfarth astroid model predicts very well the observed Faraday rotation. This abrupt transition is generally sought after in the design of devices especially switching devices. This work extends the application of magneto-optical materials to all fiber devices which includes high speed switches as well as interferometers. A Mach-Zehnder interferometer (MZI) based on Faraday rotation is proposed and experimentally implemented, which in the current framework the device is an on/off switch. The simple construction and operation of the Mach-Zehnder interferometer (MZI) makes it suitable for application in photonic integrated circuits. Thus interferometric configuration paves the way for fabrication of integrated magneto-optical devices that are low cost, better performing and compatible with all-fiber optical communications networks. An integrated magneto-optical MZI switch on silicon-on-insulator (SOI) substrate is also proposed.;A one dimensional scan of the magneto-optical sample was performed with a simple fiber based assembly. The idea can be expanded for dynamic imaging of the domain mechanisms in the presence of an applied magnetic field. A new system for dynamic imaging of domain mechanism has been proposed

    Challenges of Reading Comprehension in Early Primary Classrooms of India

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    The present paper provides details of a significant classroom based research study that explored the status of reading and comprehension instructions in early primary classrooms of Indian context. It is significant as there has been dearth of research in any of these fields—early reading, reading comprehension in early school years, and early grade classrooms in India. The study was exploratory, descriptive and qualitative in nature. It examines the nature of comprehension instructions, quality of reading experiences, whether reading experiences are meaningful for learners or not, kinds of reading materials present and accessible to students and nature of their engagement with texts in second grade classrooms. It describes various challenges of reading comprehension in early primary classrooms and evaluates the situation in light of the recommendations provided in the policy documents

    PROSPECTIVE STUDY OF TRAGAL PERICHONDRIUM VERSUS TEMPORALIS FASCIA AS GRAFT FOR TYMPANOPLASTY

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    ABSTRACT Objective: Relative merit of materials and associated techniques for myringoplasty makes important study perspective of clinical relevance and evidence based practice. Methods: Prospective study of outcomes in myringoplasty using either temporalis fascia or tragal perichondrium in 23  adult patients of tympanic perforation is reported.2 months after surgery pure tone audiometry and tympanic membrane examinations were performed. Parameters observed were survival and uptake of graft and hearing improvement in terms of average air-bone gap. Results and Conclusion: Temporalis fascia graft is marginally superior.However near comparable outcomes with tragal perichondrium graft make it a choice option for cases with negative middle ear pressure with Eustachian tube dysfunction and large perforations Cartilage is more robust and unlikely to undergo retraction. Keywords: Atelactic ear, Myringoplasty, Tragal prichondrium, Tympanic perforation.Â

    Existence of solutions to neutral differential equations with deviated argument

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    In this paper we shall study a neutral differential equation with deviated argument in an arbitrary Banach space X.X. With the help of the analytic semigroups theory and fixed point method we establish the existence and uniqueness of solutions of the given problem. Finally, we give examples to illustrate the applications of the abstract results

    Monotone iterative technique for nonlocal fractional differential equations with finite delay in a Banach space

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    In this paper, we extend a monotone iterative technique for nonlocal fractional differential equations with finite delay in an ordered Banach space. By using the monotone iterative technique, theory of fractional calculus, semigroup theory and measure of noncompactness, we study the existence and uniqueness of extremal mild solutions. An example is presented to illustrate the main result
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