oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2017 ( 22 )

2016 ( 37 )

2015 ( 123 )

2014 ( 169 )

自定义范围…

匹配条件: “Arif Aziz Nathani” ,找到相关结果约2661条。
列表显示的所有文章,均可免费获取
第1页/共2661条
每页显示
Seroepidemiology of hepatitis A virus in Hyderabad, South India
Rahamathulla Syed,Aejaz Habeeb Mohammed,Prathap Kumar Sindiri,Arif Aziz Nathani
Journal of Medical and Allied Sciences , 2012,
Abstract: The present study was carried to determine the prevalence of Hepatitis A virus (HAV) IgM antibody among general population in Hyderabad since January 2002 to December 2011. A total of 4571 subjects were selected and divided into groups on the basis of age. The serum samples were screened for the presence of HAV IgM antibodies (anti-HAV IgM) using a commercially available enzyme linked immunosorbent assay (ELISA) kit. Of the 4571 serum samples, 4257 were negative and 314 (6.87%) were positive for the HAV IgM assay. The disease predominance was more in males (212) with 67.51% compared to females (102) with 32.48%. Anti-HAV seroprevalence was measured for the following age groups: Early (≤20 years), Middle (21-40 years) and Late (≥41 years). Average age-wise IgM-anti-HAV positivity from 2002-2011 was 234 of 314 in ≤20 years, 74.52%), 73 of 314 (21-40 years, 23.24%), and 7 of 314 (≥41 years, 2.22%). The present study will provide insights to the recent epidemiologic features of HAV infection in South India.
High Frequency Plant Regeneration from Leaf Derived Callus of Dianthus caryophyllus L.  [PDF]
Muhammad Arif, Saima Rauf, Aziz Ud Din, Mamoona Rauf, Humera Afrasiab
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.515260
Abstract:

An efficient procedure was developed for in vitro callus induction, proliferation and regeneration of carnation cultivar (Dianthus caryophyllus L.) using leaf, nodal and inter-nodal explants on Murashige and Skoog’s medium (MS) supplemented with exogenous plant growth regulators. For morphogenic callus induction and proliferation from various explants, MS medium supplemented with 3.0 mg/l 2,4-D was highly efficient with 100% callus induction frequency from inter-nodal explants. Leaf explants showed quicker response than nodal and inter-modal explants, for callus initiation within 6 days of inoculation. Best grown callus was obtained from leaf explant. The leaf-derived callus was maintained up to several weeks, which indicated that 8-week incubation period was the most suitable for obtaining well proliferated, morphogenic callus. Temperature variation also affected the growth of in vitro induced morphogenic callus from various explants. Results have shown that 27°C proved to be the best temperature for morphogenic callus induction and proliferation from leaf and inter-nodal explants. Among the auxin-cytokinin combination, MS medium containing 1.0 mg/l N(6)-benzylaminopurin (BAP) and 2.0 mg/l NAA showed the highest efficiency of callus initiation and proliferation from leaf, nodal and inter-nodal explants. Light conditions proved better for callogenesis and proliferation from leaf, nodal and inter-nodal explants. Regeneration response from well grown morphogenic callus was prominent on MS medium supplemented with 3.0 mg/l BAP alone and 1.0 mg/l NAA with 3.0 mg/l BAP.

EFFICACY OF GENTAMICIN AFTER INTRAYOLK ADMINISTRATION IN EXPERIMENT ALLY INDUCED OMPHALITIS IN BROILER CHICKS
Muhammad Ashraf, Qamar Arif and Kashif Aziz Khan1
Pakistan Veterinary Journal , 2002,
Abstract: A study was conducted to observe the effect of intrayolk injection of gentamicin on experimentally induced omphalitis in broiler chicks. Escherichia coli was injected into yolk sac to induce omphalitis and treatment was done by intrayolk injection of gentamicin. Results showed that mortality decreased and feed intake increased after treatment, Intrayolk injection of antibiotics is suggested as an alternative to oral administration for the treatment of omphalitis in chicks.
[Re]claiming Indigenous Knowledge: Challenges, Resistance, and Opportunities
Njoki Nathani Wane
Decolonization : Indigeneity, Education & Society , 2013,
Abstract: In May 1994, I arrived in Kenya to carry out my research on Africa and, more specifically, rural Kenyan women’s Indigenous ways of knowing. My interest in this research was sparked by the lack of textual knowledge of African Indigenous knowledges during my tenure in three North American universities. As a young scholar, I “ran” away from Kenya because, all through my education, there was a great emphasis on western education, lifestyle, and culture. I longed for it, hungered for it, and worked hard to acquire it. I was convinced that, once I enrolled in a University outside my country, the curriculum would in some way touch on African ways. In this regard, I was mistaken. The paper has four parts: 1) the introduction and a brief background to my interest in Indigenous knowledges; 2) the method employed; 3) a discussion of two knowledge claims. The two knowledge claims represent part of my research findings; 4) a pseudo-conclusion, given that this work involves my search for self, a process which has been ongoing since the nineties.
Security Approaches in IEEE 802.11 MANET—Performance Evaluation of USM and RAS  [PDF]
Arif Sari
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2014, DOI: 10.4236/ijcns.2014.79038
Abstract: Evaluation of IEEE 802.11 Mobile Ad Hoc Networks (MANET) security issues becomes significant concern for researchers since Denial of Service (DoS) attacks are recognized as one of the most harmful threats. A variety of security mechanisms are proposed to solve security dilemma in MANETs against different layers of DoS attacks. Physical Layer jamming attacks exhaust the victim’s network resources such as bandwidth, computing power, battery, etc. Unified Security Mechanism (USM) and Rate Adaptation Scheme (RAS) are two of the proposed methods by researchers against DoS attacks. USM and RAS mechanisms are simulated through OPNET simulator and Jamming Attack is generated on the network for each security mechanisms to compare specific performance metrics on the network.
Lightweight Robust Forwarding Scheme for Multi-Hop Wireless Networks  [PDF]
Arif Sari
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2015, DOI: 10.4236/ijcns.2015.83003
Abstract: The Gossip-Based Relay Protocol (GRP) is developed based on Ad Hoc on Demand Distance Vector Protocol (AODV) and proposed to increase the efficiency of package routing functionality in ad hoc networks through specific flooding scheme. This lightweight protocol reduced the collisions on the network through specific mechanisms. Request to Send/Clear to Send (RTS/CTS) mechanism is widely used in ad hoc environment with Temporarily Ordered Routing Algorithm (TORA) in order to eliminate collisions and allow access to the shared medium through proposed authentication methods. Since GRP contains specific mechanism of directed acyclic Graph (DAG) mechanism to mitigate overhead problem, RTS/CTS modified TORA might result in similar performance metrics. In this paper, TORA protocol has a modification of new RTS/CTS mechanism and has been simulated in order to be compared with proposed lightweight robust forwarding GRP scheme in terms of specific performance metrics such as network throughput, end-to-end delay and message flooding rate over the network through OPNET simulation package in order to expose the optimal solution to increase overall network throughput in ad hoc environment.
A Review of Anomaly Detection Systems in Cloud Networks and Survey of Cloud Security Measures in Cloud Storage Applications  [PDF]
Arif Sari
Journal of Information Security (JIS) , 2015, DOI: 10.4236/jis.2015.62015
Abstract: Cloud computing has become one of the most projecting words in the IT world due to its design for providing computing service as a utility. The typical use of cloud computing as a resource has changed the scenery of computing. Due to the increased flexibility, better reliability, great scalability, and decreased costs have captivated businesses and individuals alike because of the pay-per-use form of the cloud environment. Cloud computing is a completely internet dependent technology where client data are stored and maintained in the data center of a cloud provider like Google, Amazon, Apple Inc., Microsoft etc. The Anomaly Detection System is one of the Intrusion Detection techniques. It’s an area in the cloud environment that is been developed in the detection of unusual activities in the cloud networks. Although, there are a variety of Intrusion Detection techniques available in the cloud environment, this review paper exposes and focuses on different IDS in cloud networks through different categorizations and conducts comparative study on the security measures of Dropbox, Google Drive and iCloud, to illuminate their strength and weakness in terms of security.
The Study Of The Effects Of Polishing Rotation Speed To The Length Of Cut End Face SU-8 Polymer On Silicon Substrate
Mohammad Syuhaimi Ab-Rahman,Fazlinda Ab Aziz,Noor Azie Azura Mohd Arif,Abang Anuar Ehsan
Jurnal Kejuruteraan , 2009,
Abstract: This research have focused on polishing characterize of polymer based waveguides. The aims of this researchare to study how polishing rotation speeds affect the length of cut end face SU-8 polymer on silicon substrate.There are seven sets of rotation velocities which are 50, 100, 150, 200, 250, 300, and 350 rpm. From the obtainedresult, it can be concluded that percentage of cut length for each rotation velocity is ≤ 0.5 % (50 rpm), 0.6– 1.0 % (100 rpm), 3.8 – 4.8 % (150 rpm), 7.7 – 10.6 % (200 rpm), 15.7 – 18.3% (250 rpm), 25.6 – 27.4 % (300rpm) and 40.0 – 43.7 % (350 rpm).
N-(2-Methoxyphenyl)benzenesulfonamide
Aziz-ur-Rehman,Muhammad Arif Sajjad,Mehmet Akkurt,Shahzad Sharif
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810023871
Abstract: The asymmetric unit of the title compound, C13H13NO3S, contains two crystallographically independent molecules in which the dihedral angles between the phenyl and benzene rings are 88.16 (12) and 44.50 (12)°. One of the molecules features an intramolecular N—H...O hydrogen bond. In the crystal, the molecules are linked into dimers by pairs of N—H...O hydrogen bonds. The dimers are further connected by C—H...O and C—H...π interactions, forming a three-dimensional network.
A Low Drop-Out Voltage Regulator in 0.18 μm CMOS Technology
Fadzrul Izzuddin Bin Abd Aziz,Md. Mamun,Mohammad Arif Sobhan Bhuiyan,Ahmad Ashrif A. Bakar
Modern Applied Science , 2013, DOI: 10.5539/mas.v7n4p70
Abstract: Low Dropout regulators (LDOs) are essential devices for power supplies in almost all portable and hand-held electronic devices. The chip area of the usual LDO is still large and does not have the flexibility or adjustability of sampling resistor, output resistor and capacitors in error amplifier and series pass element. In this study, a Low Dropout regulator (LDO) circuit architecture with Mentor Graphic simulation software in 0.18 μm CMOS process technology with adjustable sampling resistor, output resistor and capacitors in error amplifier and series pass element is proposed. The proposed regulator design has the superiority that the sampling resistor, output resistor and capacitor is adjustable or can be changed when needed in error amplifier and series pass element. Moreover, the occupied chip area obtained is only (20.43 x 14.6) μm2.
第1页/共2661条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.