OALib Journal期刊

ISSN: 2333-9721




2019 ( 10 )

2018 ( 42 )

2017 ( 58 )

2016 ( 93 )


匹配条件: “Singh Harmanpreet” ,找到相关结果约13965条。
Harmanpreet Singh,Harpreet Kaur Rana
International Journal of Digital Library Services , 2011,
Abstract: In this paper, we introduce social network analysis for investigating the effect of Information and Communication Technology (ICT) use on the performance of the faculty in Engineering Colleges in rural India. Here, we highlight the data collection procedure, its benefits and limitations and standard measures of social network data. We first suggest that collection and analysis of relational and attribute data offers richer insights with regards to the investigation of structural effects of network position on performance of Engineering faculty. Second, drawing from theoretical and methodological strengths of previous studies conducted in Social Network, we describe the process for collecting relational data from the faculty members in isolated and rural settings. We primarily discuss two specific types of social network data collection approaches-- (i) whole network and (ii) ego-centric network approach; and highlight its opportunities and challenges. Third, we discuss the problem of network sampling in the context of faculty members in rural areas. Finally, challenges associated with analysing social network data are presented.
A Stability Indicating Assay Method Development and Validation for the Frovatriptan Succinate Monohydrate by Using UV: A Spectrophotometric Technique
Hitesh Verma,Surajpal Verma,Harmanpreet Singh
ISRN Spectroscopy , 2013, DOI: 10.1155/2013/361385
Abstract: A new simple, reliable, inexpensive, and accurate method was developed for the quantification of Frovatriptan Succinate Monohydrate in different physiological media at 244?nm in bulk and in tablet dosage forms. The developed method is an attempt to surpass the disadvantages associated with the reported methods, namely, less sensitive and tedious in usage for routine purposes. Beer’s law was followed over the range of 1.0?μg/mL to 4.5?μg/mL. Stability indicating assay method was developed and validated as per the ICH guidelines using various parameters, for example, accuracy, precision, limit of quantification, limit of detection, robustness, ruggedness, solution stability, recovery, forced degradation (hydrolysis, photo degradation, thermal degradation, and oxidation), and so forth. Percent relative standard deviation associated with all the parameters was less than 2, showing compliance with the acceptance criteria of ICH guidelines. The developed method was very sensitive as limit of quantification and limit of detection were found to be 0.025?μg/mL and 0.00625?μg/mL, respectively. Forced degradation studies of drug reveal good stability under the chosen experimental conditions. 1. Introduction Chemically, the Frovatriptan Succinate Monohydrate (FSM) is 3-methylamino-6-carboxamido-1,2,3,4-tetrahydrocarbazole succinate monohydrate (Figure 1). It is a potent and selective agonist of 5-HT1B and 5-HT1D receptors. By acting on 5-HT1B receptor, it causes constriction of dilated arteriovenous anastomoses. The action on 5-HT1D causes the inhibition of Substance and calcitonin gene-related peptide (CGRP) release. Among all the triptans, it has the longest elimination half-life ( 1/2) of 26 hours. This carabzole derivative was approved by FDA in 2001. It has all the ideal characteristics to be used as a first line drug for menstruation migraine [1–3]. Figure 1: Structure of Frovatriptan Succinate Monohydrate (FSM). Despite tremendous utility of FSM in migraine, there was no simple, sensitive, and reliable stability indicating that UV spectroscopic method has been reported for its analysis in the vast reviewed literature. Only two UV spectroscopic methods have been mentioned in the literature for the analysis of FSM in 0.1?N NaOH and 0.1?N HCl at 280.2?nm and 279?nm, but these methods are less sensitive and tedious to be used for routine purposes because they involve first-order derivatization, second-order derivatization, and area-under the-curve (AUC) analysis in order to make their method sensitive [4, 5]. HPLC methods were reported in the literature for
Withanolides: Phytoconstituents with significant pharmacological activities
Singh Amritpal,Duggal Sanjeev,Singh Harmanpreet,Singh Jaswinder
International Journal of Green Pharmacy , 2010,
Abstract: Withanolides are a group of naturally occurring oxygenated ergostane type steroids, having lactone in side chain and 2-en-1-one system in the ring. Withanolides are present in medicinal plants of Solanaceae family. Formulations based on these medicinal plants are widely used in Ayurveda and traditional Chinese medicine. Withanolides have shown a wide range of pharmacological activities including hypno sedative, immunomodulatory, anti-inflammatory, antiarthritic, angiogenesis inhibitor, anticholinesterase, antioxidant, antibacterial and above all, antitumour. Withaferin A is the best studied withanolide as far as pharmacological investigations are concerned. The present review summarises the investigative work carried out on bioactive withanolides.
Speech compression and decompression using DWT and DCT
Harmanpreet kaur
International Journal of Computer Technology and Applications , 2012,
Abstract: speech compression is the digital signal which is compressedby using various techniques for transmission. This paperexplains a transform methodology for compression of thespeech signal. In this paper speech is compressed by discretewavelet transform technique afterward compressed signal isagain compressed by discrete cosine transform afterwardcompressed signal is decompressed by discrete wavelettransform. The performance of speech signal is measure onthe basis of peak signal to noise ratio (PSNR) and meansquare error (MSE) by using different filters of wavelet family
Low Cost Swarm Based Diligent Cargo Transit System
Harish K,Varadhan R,Anurag R M,Harmanpreet S
Computer Science , 2015,
Abstract: The goal of this paper is to present the design and development of a low cost cargo transit system which can be adapted in developing countries like India where there is abundant and cheap human labour which makes the process of automation in any industry a challenge to innovators. The need of the hour is an automation system that can diligently transfer cargo from one place to another and minimize human intervention in the cargo transit industry. Therefore, a solution is being proposed which could effectively bring down human labour and the resources needed to implement them. The reduction in human labour and resources is achieved by the use of low cost components and very limited modification of the surroundings and the existing vehicles themselves. The operation of the cargo transit system has been verified and the relevant results are presented. An economical and robust cargo transit system is designed and implemented.
Analysis of Vortex Motion in Porous Media  [PDF]
Beant Singh, Chanpreet Singh
Journal of Electronics Cooling and Thermal Control (JECTC) , 2012, DOI: 10.4236/jectc.2012.22003
Abstract: In vortex motion fluid moves in curve path and the stream lines are curved. When the fluid flows between curved stream line, the centrifugal forces are setup which is counter balanced by pressure forces acting in the radial direction. The vortex motion has two types of curved motion. The first type called free vortex type, the fluid moves due to its own natural effect but energy is not added to fluid when moving in curved path. The second type called forced vortex, in which energy is added to fluid. A two dimensional steady laminar free convective flow of viscous incompressible flow in porous media voids is considered. In this paper the motion of fluid is studied while moving in the porous media. It is studied that the motion of the fluid in the porous media is vortex motion at the low Reynolds’s number, where the motion is laminar motion and the fluid obeys the laws of vortex motion.
Chromohysteroscopy—A new technique for endometrial biopsy in Abnormal Uterine Bleeding (AUB)  [PDF]
Nisha Singh, Bharti Singh
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.35A1003

Objective: To evaluate the role of chromohysteroscopy in improving diagnostic accuracy of endometrial biopsy in cases of AUB. Design: Cross sectional interventional study. Materials and Methods: This study was conducted on 60 women with AUB in Dept. of Obst. & Gyne at King George Medical University, Lucknow over a period of one year. All cases underwent diagnostic hysteroscopy followed by chromohysteroscopy using 2% methylene blue dye. Hysteroscopic guided biopsy was taken from stained and unstained areas followed by an endometrial aspiration biopsy from whole uterine cavity. The histopathology results of three samples were compared and analyzed in relation with staining pattern and type of AUB. Data analysis was done on SPSS version 15 of windows 2007. Results: Out of 60 cases, 11cases were found to have non hormonal pathology after chromohysterosopic biopsy. Eight (72.72%) cases were diagnosed by stained endometrial tissue, one (9.09%) by unstained tissue and three (27.27%) by endometrial aspiration. The diagnostic ability of stained tissue biopsy was significantly higher (p = 0.006) than unstained biopsy and endometrial aspiration. Conclusion: Chromohysteroscopy is a simple and effective technique for diagnosing endometrial pathology in cases of AUB.

Evaluation of EO-1 Hyperion Data for Crop Studies in Part of Indo-Gangatic Plains: A Case Study of Meerut District  [PDF]
Davinder Singh, Rajender Singh
Advances in Remote Sensing (ARS) , 2015, DOI: 10.4236/ars.2015.44021
Abstract: Due to the high number of bands in the hyperspectral image, the selection of optimum bands for crop classification is a prerequisite. The Hyperion sensor has 242 spectral bands out of which 143 useable bands were selected. The bands reflected wavelength from 400 to 1000 nm to the VNIR spectrometer and transmitted the band from 900 to 2500 nm to the SWIR spectrometer. Spectral Angle Mapping Classification (SAMC) approach and a multi-scale object oriented method are applied for crop studies. The result obtained from the accuracy assessment by comparing Ground Control Points (GCP) with the help of image spectra shows 78% of overall accuracy. This shows that these data are highly useful in studying the crop diversification.
Double Negative Left-Handed Metamaterials for Miniaturization of Rectangular Microstrip Antenna  [PDF]
G. Singh
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.26044
Abstract: In this paper, I have explored a significant concept for the miniaturization of microstrip patch antenna configuration by using the double negative (DNG) left-handed Metamaterials, which have dielectric permittivity and magnetic permeability both negative, simultaneously. It is achieved through the concept of phase-compensation by thin slab consist of the double positive (DPS) material, which have dielectric permittivity and magnetic permeability both positive, simultaneously and DNG metamaterials as a substrate of the microstrip patch antenna. By combining the DNG metamaterial slab with the slab made of DPS materials form a cavity resonator whose dispersion relation is independent of the sum of thickness of the slabs filling this cavity but it depends on the ratio of their thicknesses. This cavity constitutes by DPS and DNG material is used as substrate of the microstrip antennas and the DNG material slab is behave as phase compensator.
One Dimensional Solute Transport Originating from a Exponentially Decay Type Point Source Along Unsteady Flow Through Heterogeneous Medium  [PDF]
Premlata Singh
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.38068
Abstract: One dimensional advection dispersion equation is analytically solved initially in solute free domain by considering uniform exponential decay input condition at origin. Heterogeneous medium of semi infinite extent is considered. Due to heterogeneity velocity and dispersivity coefficient of the advection dispersion equation are considered functions of space variable and time variable. Analytical solution is obtained using Laplace transform technique when dispersivity depended on velocity. The effects of first order decay term and adsorption are studied. The graphical representations are made using MATLAB

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