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Search Results: 1 - 10 of 791 matches for " Qamar Zia "
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A Gas-Kinetic Scheme for Six-Equation Two-Phase Flow Model  [PDF]
Saqib Zia, Munshoor Ahmed, Shamsul Qamar
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.53045
Abstract:

A kinetic flux-vector splitting (KFVS) scheme is applied for solving a reduced six-equation two-phase flow model of Saurel et al. [1]. The model incorporates single velocity, two pressures and relaxation terms. An additional seventh equation, describing the total mixture energy, is added to the model to guarantee the correct treatment of shocks in the single phase limit. Some salient features of the model are that it is hyperbolic with only three wave propagation speeds and the volume fraction remains positive. The proposed numerical scheme is based on the direct splitting of macroscopic flux functions of the system of equations. The second order accuracy of the scheme is achieved by using MUSCL-type initial reconstruction and Runge-Kutta time stepping method. Moreover, a pressure relaxation procedure is used to fulfill the interface conditions. For validation, the results of suggested scheme are compared with those from the high resolution central upwind and HLLC schemes. The central upwind scheme is also applied for the first time to this model. The accuracy, efficiency and simplicity of the KFVS scheme demonstrate its potential for modeling two-phase flows.

Intelligent Load Management Scheme for a Residential Community in Smart Grids Network Using Fair Emergency Demand Response Programs  [PDF]
Muhammad Ali, Z.A. Zaidi, Qamar Zia, Kamal Haider, Amjad Ullah, Muhammad Asif
Energy and Power Engineering (EPE) , 2012, DOI: 10.4236/epe.2012.45044
Abstract: In the framework of liberalized deregulated electricity market, dynamic competitive environment exists between wholesale and retail dealers for energy supplying and management. Smart Grids topology in form of energy management has forced power supplying agencies to become globally competitive. Demand Response (DR) Programs in context with smart energy network have influenced prosumers and consumers towards it. In this paper Fair Emergency Demand Response Program (FEDRP) is integrated for managing the loads intelligently by using the platform of Smart Grids for Residential Setup. The paper also provides detailed modelling and analysis of respective demands of residential consumers in relation with economic load model for FEDRP. Due to increased customer’s partaking in this program the load on the utility is reduced and managed intelligently during emergency hours by providing fair and attractive incentives to residential clients, thus shifting peak load to off peak hours. The numerical and graphical results are matched for intelligent load management scenario.
Investigation of minerals, testosterone, and transaminases in the semen and serum of fertile and infertile men belongs to different age groups  [PDF]
Zahed Mahmood, Muhammad Riaz, Imtiaz Mahmood Tahir, Abdul Shakoor, Zia-ur Rahman, Muhammad Usman Qamar Saeed
Advances in Bioscience and Biotechnology (ABB) , 2012, DOI: 10.4236/abb.2012.35074
Abstract: The present study was aimed to assess the potential of infertility to induce the adverse effects with reference to testosterone, Triiodothyronine (T3), Thyroxine (T4), Alanine Aminotransferase (ALT), Aspartate Amino-transferase (AST), zinc, copper and iron. All the samples were divided into four groups according to age and disorder (Group 1, 10 infertile men of 25-40 years; Group 2, 10 fertile men of 25-40 years; Group 3, 10 infertile men of 41- 60 years and Group 4, 10 fertile men of 41-60 years). Semen and blood samples were analyzed by atomic absorption spectrophotometry to determine minerals while, Testosterone, T3 and T4 were determined by enzyme immunoassay kits. ALT and AST were determined using standard kit assay method. The levels of testosterone and T3 and AST in the fertile semen of 41-60 years age group were increased significantly (P ≤ 0.001) as compared to that of fertile semen of 25-40 years age group. While, the level of T4 in the fertile semen of 41-60 years age group was decreased significantly (P ≤ 0.001) as compared to that of fertile semen of 25-40 years age group. In case of fertile serum, only the level of testosterone was significantly decreased (P ≤ 0.05) in the 41-60 years age group as compared to 25-40 years age group. The levels of testosterone and Cu in the infertile serum of 41-60 years age group were decreased significantly (P ≤ 0.001). While, the levels of T3, T4, ALT and Fe in the infertile serum of 41-60 years age group were increased significantly (P ≤ 0.05) as compared to that of infertile serum of 25-40 years age group.
FEDRP Based Model Implementation of Intelligent Energy Management Scheme for a Residential Community in Smart Grids Network  [PDF]
Qamar Zia, Muhammad Ali, Zulfikar Ahmad Zaidi, Chaudhry Arshad, Amjad Ullah, Hafeez ur Rahman, Muhammad Ahsan Shahzad, Beenish Taj
Smart Grid and Renewable Energy (SGRE) , 2012, DOI: 10.4236/sgre.2012.34045
Abstract: In the framework of liberalized deregulated electricity market, dynamic competitive environment exists between wholesale and retail dealers for energy supplying and management. Smart Grids topology in form of energy management has forced power supplying agencies to become globally competitive. Demand Response (DR) Programs in context with smart energy network have influenced prosumers and consumers towards it. In this paper Fair Emergency Demand Response Program (FEDRP) is integrated for managing the loads intelligently by using the platform of Smart Grids for Residential Setup. The paper also provides detailed modeling and analysis of respective demands of residential consumers in relation with economic load model for FEDRP. Due to increased customer’s partaking in this program the load on the utility is reduced and managed intelligently during emergency hours by providing fair and attractive incentives to residential clients, thus shifting peak load to off peak hours. The numerical and graphical results are matched for intelligent energy management scenario.
Clinical Implications of Tumor Necrosis Factor-Alpha, Interleukin-6 and Resistin in Coronary Artery Disease  [PDF]
Qamar Javed
World Journal of Cardiovascular Diseases (WJCD) , 2014, DOI: 10.4236/wjcd.2014.49052
Abstract:

Tumor necrosis factor alpha (TNF-alpha) and interleukin-6 (IL-6) are involved in the progression of coronary artery disease (CAD). The cytokines’ levels are associated with the severity of CAD. We have recently reported on the association of resistin, a relatively novel cytokine with the pathogenesis of cardiovascular disease (CVD). Although the inflammatory cytokines’ impact on atherosclerosis is widely accepted, yet some controversy exists regarding the involvement of these factors in atherogenesis. The current review highlights the potential association of TNF-alpha, IL-6 and resistin SNPs (single nucleotide polymorphisms) with CAD. Molecular genetics data along with the intracellular signaling cascade mechanisms may have important clinical implications in the treatment of CAD.

Role of Incubation in Women Entrepreneurship Development in Pakistan
Khuram Shahzad,Qamar Ali,Sami Ullah Bajwa,Dr. Shahid A. Zia
Asian Journal of Business Management , 2012,
Abstract: Business incubation is one of the implementation tools of government’s strategy for facilitating women entrepreneurship development in Pakistan. Purpose of this study was to measure the importance and effectiveness of incubation services for women entrepreneurs in Pakistan. Study was carried out by using survey method. Tenants from a women specific incubator participated in this survey. Self-administered questionnaire measuring the importance and effectiveness of 34 incubation services was incorporated in this study. Results revealed that tenants perceived all the investigated incubation services very important for the success of their businesses. However, difference in perceived importance and perceived effectiveness, for majority of the incubation services, has been found.
Economic Assessment of Sugarcane (Saccharum officinarum L.) through Intercropping  [PDF]
Abdul Rehman, Rafi Qamar, Jamshaid Qamar
Journal of Agricultural Chemistry and Environment (JACEN) , 2014, DOI: 10.4236/jacen.2014.33B004
Abstract:

Sugarcane has pronounced importance to provide sugar for more than half of the global population. World population is enhancing day-by-day and production land is in the worst situation. The cultivated land is diminishing rapidly due to urbanization, road construction, and land deterioration. This crisis demands alternate research to raise crop productivity and maximize the economic returns per unit land for feeding the gigantic population. Sugarcane is a long duration crop and gave late net economic return. Intercropping in sugarcane received much attention and need to properly manage for getting higher net return from same unit area. It is becoming popular among farming community due to resourcefully utilization of land. Intercropping has the potential to inspire the farmers to get maximum economic return per acre per annum. For intercropping, wheat, gram, soybean, and potato were used as an intercrop in September-sown sugarcane. Triple row strip planting geometry of sugarcane with four intercropped (SC + Wheat, SC + Gram, SC + Soybean, and SC + Potato) and check with sole SC was used. Sugarcane was planted during September 2011- 12 and 2012-13 at research area University College of Agriculture, University of Sargodha, Pakistan. Randomized complete block design with three replications were used. Results showed that number of millable cane, cane diameter; unstripped and stripped cane yield and crop growth rate was significantly higher in sole sugarcane when compared with different intercrop in 2011-12 while trend was same in 2012-13. Cane diameter and un-stripped cane yield were statistically at par of intercrops SC + Soybean and SC + Potato while stripped cane yield of Sole SC and SC + Potato was statistically at par in 2012-13. In both the year of study, intercrops gave higher land equivalent ratio and net return over sole sugarcane planted while sole sugarcane gave maximum benefit cost ratio compared with other intercrops.

Differential haemocyte counts of 5th instar nymphs and adults of Dysdercus cingulatus Fabr (Hemiptera: Pyrrhocoridae) treated with acephate, an organophosphorus insecticide
Ayesha Qamar
Biology and Medicine , 2009,
Abstract: Five types of haemocytes have been identified in the haemolymph of 5th instar nymphs and adults of the redcotton bug, Dysdercus cingulatus. Changes in the Differential Haemocyte Counts (DHCs) have been assessed inrelation to application of graded concentrations of Acephate. The haemogram profile was determined 6 hr, 1 day,3 days, 5 days post-treatment as well as post-moulting i.e. in the adult males and females. Different types ofhaemocytes registered a dose-dependent response by either exhibiting increase or decrease in their relativeproportions. The adipohaemocytes were the most sensitive cells to the insecticidal stress whereas theoenocytoids showed least damage to their cellular integrity. However, there was a consistent increase in theproportion of damage/unidentifiable blood cells in accordance with increase in concentration of acephate applied.Furthermore, the treated insects apparently responded by releasing more prohaemocytes, the so called “stemcells”, into the circulation as evident by increase in the percentage of these cells in treated blood smearscompared to the parallel control.
Towards an Indigenous Perspective on HRM: A Study of Textile Industry of Pakistan
Qamar Ali
International Journal of Management and Organizational Studies , 2012,
Abstract: The purpose of this study was to identify external and internal forces shaping HRM practices in textile industry of Pakistan. The study aimed at describing the context-specific HRM practices in textile industry. Interviews were used as a source of primary data collection. Taking Faisalabad city as a case, top HRM officials from ten respondent organizations in textile industry were interviewed. An interpretive approach to research design was adopted using ‘human as an instrument’ for data analysis. Findings suggest that due to extensive competition in last few years HR planning has received serious attention in textile industry. Countries like China, India, and Bangladesh are posing huge threats to the industry. The industry is at best dominated by family owned businesses and now the young generation, after education from abroad, is taking charge of their parents. Assumptions about workers are getting transformed. Fresh leaders are thinking different from their predecessors. However, there is a state of inertia in textile industry where young leaders have an uphill task ahead to remove the obstacles in the course of change.
Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Zinc and Thallium in Different Matrixes after Solid Phase Extraction on Modified Multiwalled Carbon Nanotubes  [PDF]
Sayed Zia Mohammadi
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.35049
Abstract: The potential of modified multiwallcd carbon nanotubes, as a solid-phase extraction sorbent for the simultaneous separation and preconcentration of zinc and thallium has been investigated. Zinc and thallium were adsorbed quantitatively onto modified multiwalled carbon nanotubes in the pH range of 3 - 6.5. Parameters influencing the simultaneous preconcentration of Zn(II) and Tl(I) ions such as pH of the sample, sample and eluent flow rate, type and volume of elution solution and interfering ions, have been examined and optimized. Linearity was maintained between 0.1 to 20.0 μg?mL–1 for thallium and 20.0 ng?mL–1 to 5.0 μg?mL–1 for zinc in the final solution. The defection limits based on three times the standard deviation of the blank signal (n = 8) for thallium and zinc were 5.1 and 1.4 ng?mL–1, respectively. Seven replicate determination of a mixture of 5.0 and 0.2 μg?mL–1 of thallium and zinc in the final solution gave a mean absorbance of 0.085 and 0.074 with relative standard deviation 1.5% and 1.7%, respectively. The method has been applied for the determination of trace amounts of zinc and thallium in biological and water sample with satisfactory results.
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