Punjab, Pakistan
Punjab, Pakistan

The University of Wah was established in 2005. Three and half years later, in July 2009 the Punjab provincial Assembly passed the University of Wah Act, 2009. The University is offering 4-years Bachelor and 2-years Master programs in Basic science, Social science, Management science and Engineering science. The University has two constituent colleges, Mashal and Wah Engineering College. The Wah Engineering College is offering B.Sc Engineering Program in the fields of Electrical Power, Mechanical,Chemical,Civil,Mechatronics, whereas, Mashal College is offering BS Programs in English and Education . Wikipedia.

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Hassan T.U.,Quaid-i-Azam University | Bano A.,University of Wah | Naz I.,Quaid-i-Azam University
International Journal of Phytoremediation | Year: 2017

The aim of the study was to determine tolerance of plant growth promoting rhizobacteria (PGPR) in different concentrations of Cu, Cr, Co, Cd, Ni, Mn, and Pb and to evaluate the PGPR-modulated bioavailability of different heavy metals in the rhizosphere soil and wheat tissues, grown in saline sodic soil. Bacillus cereus and Pseudomonas moraviensis were isolated from Cenchrus ciliaris L. growing in the Khewra salt range. Seven-day-old cultures of PGPR were applied on wheat as single inoculum, co-inoculation and carrier-based biofertilizer (using maize straw and sugarcane husk as carrier). At 100 ppm of Cr and Cu, the survival rates of rhizobacteria were decreased by 40%. Single inoculation of PGPR decreased 50% of Co, Ni, Cr and Mn concentrations in the rhizosphere soil. Co-inoculation of PGPR and biofertilizer treatment further augmented the decreases by 15% in Co, Ni, Cr and Mn over single inoculation except Pb and Co where decreases were 40% and 77%, respectively. The maximum decrease in biological concentration factor (BCF) was observed for Cd, Co, Cr, and Mn. P. moraviensis inoculation decreases the biological accumulation coefficient (BAC) as well as translocation factor (TF) for Cd, Cr, Cu Mn, and Ni. The PGPR inoculation minimized the deleterious effects of heavy metals, and the addition of carriers further assisted the PGPR. © 2017 Taylor & Francis Group, LLC.

Zaman K.,University of Wah | Abd-el Moemen M.,King Saud University
Renewable and Sustainable Energy Reviews | Year: 2017

The objective of the study is to examine the dynamic linkages among electricity production from renewable sources, permanent cropland, high technology exports, health expenditures, and carbon dioxide (CO2) emissions in the panel of 14 selected Latin America and the Caribbean countries, over the period of 1980–2013. The study employed panel unit root test, panel cointegration, panel least square, panel fixed effect model, panel random effect model, and panel two stage least square (2SLS) instrumental variables technique for robust inferences. The results confirmed the long-run relationship between the variables. The panel results indicate the effectiveness of high-technology exports that decreases the CO2 emissions, while electricity production, permanent cropland and health expenditures increase CO2 emissions, which deteriorates the environment. The study concludes with the support of long-term sustainable policies, which is imperative for sound growth in a panel of countries. © 2017 Elsevier Ltd

Zaman K.,University of Wah | Moemen M.A.-E.,King Saud University
Renewable and Sustainable Energy Reviews | Year: 2017

Pursuit of excellence in economic development, in the midst of damaging the natural environment, is a shameless growth. The economic impacts on environmental degradation are quite visible in industrialized economies where human health is compromised by rapid economic growth and energy induced emissions. This study examines the interrelationship between energy consumption, economic growth and carbon dioxide (CO2) emissions under the six alternative and plausible hypothesis including Environmental Kuznets Curve (EKC), Pollution Haven Hypothesis (PHH), population based emissions (IPAT), energy led emissions, sectoral growth emissions and Emissions emancipated Human Development Index (eHDI) in the context of low and middle income countries, high income countries and in aggregated panel, over the period of 1975–2015. The results supported the EKC hypothesis, IPAT hypothesis, energy induced emissions, and sectoral growth emissions in different regions of the world, while PHH and eHDI hypothesis does not confirm across regions. This study exclusively determines the key socio-economic and environmental problems in a large pool of the world economies to understand the need of development policy agenda for sustainable growth. © 2017 Elsevier Ltd

Akhtar N.,Beihang University | Akhtar W.,University of Wah
International Journal of Energy Research | Year: 2015

Metal-air batteries are being envisioned as a clean and high energy fuel for the modern automotive industry. The lithium-air battery has been found most promising among the various practically applicable metal-air systems, that is, Al-air, Li-air, Mg-air, Fe-air, and Zn-air. The theoretical specific energy of the Li-air battery is ~12kWh/kg, excluding the oxygen mass. This is comparable with the energy density of gasoline, which is ~13kWh/kg. It has been hypothesized that the Li-air battery could supply an energy ~1.7kWh/kg after losses from over potentials to run a vehicle ~300miles on a single charge. During the first decade of this century, a fair amount of research has been conducted on Li-air battery system. Yet, Li-air batteries could not make an industrial breakthrough, and are still in the laboratory phase since their birth. In this article, we technically evaluated the recent developments, and the inferences have been analyzed from the practical/commercial point of view. The study concludes that low discharge rate, lower number of cycles, oxidation of lithium anode, discharge products at the cathode, and side reactions inside the battery are the key limiting factors in the slow progress of Li-air batteries on an industrial scale. The ongoing researches to overcome these hurdles have also been discussed. This analysis will help the reader to understand the current standing of the lithium-air battery technology. © 2014 John Wiley & Sons, Ltd.

Azeem A.,COMSATS Institute of Information Technology | Azeem A.,University of Wah | Sharif M.,COMSATS Institute of Information Technology | Raza M.,COMSATS Institute of Information Technology | Murtaza M.,COMSATS Institute of Information Technology
International Arab Journal of Information Technology | Year: 2014

Systems that rely on Face Recognition (FR) biometric have gained great importance ever since terrorist threats imposed weakness among the implemented security systems. Other biometrics i.e., fingerprints or iris recognition is not trustworthy in such situations whereas FR is considered as a fine compromise. This survey illustrates different FR practices that laid foundations on the issue of partial occlusion dilemma where faces are disguised to cheat the security system. Occlusion refers to facade of the face image which can be due to sunglasses, hair or wrapping of facial image by scarf or other accessories. Efforts on FR in controlled settings have been in the picture for past several years; however identification under uncontrolled conditions like illumination, expression and partial occlusion is quite a matter of concern. Based on literature a classification is made in this paper to solve the recognition of face in the presence of partial occlusion. These methods are named as part based methods that make use of Principal Component Analysis (PCA), Linear Discriminate Analysis (LDA), Non-negative Matrix Factorization (NMF), Local Non-negative Matrix Factorization (LNMF), Independent Component Analysis (ICA) and other variations. Feature based and fractal based methods consider features around eyes, nose or mouth region to be used in the recognition phase of algorithms. Furthermore the paper details the experiments and databases used by an assortment of authors to handle the problem of occlusion and the results obtained after performing diverse set of analysis. Lastly, a comparison of various techniques is shown in tabular format to give a precise overview of what different authors have already projected in this particular field.

Zehra U.,Wah Medical College | Tahir M.,University of Health Sciences, Lahore | Lone K.P.,University of Wah
Journal of the College of Physicians and Surgeons Pakistan | Year: 2010

Objective: To determine the gross structural malformations to the mice fetuses of the mothers given Ginkgo biloba during pregnancy. Study Design: Experimental study. Place and Duration of Study: The Experimental Research Laboratory, University of Health Sciences, Lahore, from May 2006 to December 2006. Methodology: The teratogenic effects of Ginkgo biloba extract (78 mg/kg/day and 100 mg/kg/day) dissolved in water were studied on the gross features of mice fetuses. Three groups (A, B and C) of 6 females each were mated with 2 males in two cages with 3:1 ratio of females to males. The first two groups (A and B) served as experimental and the third (C) was used as a control. Pregnancy was confirmed by a vaginal plug and gravid female mice (6) were separated from the males. Group A was treated with human therapeutic dose (78 ppm) while group B was given a high dose (100 ppm). Group C was given water only. Both experimental groups were given the drug orally throughout the gestational period. Result were compared using ANOVA with significance at p < 0.05. Results: Forty-nine fetuses from B and C groups and 50 fetuses from A group were recovered. There was a significant (p < 0.05) decrease in weight and crown-rump length of fetuses in group B as compared to those from group A and C. Further, fetuses from groups A and C did not show any gross abnormalities, whereas those from group B exhibited a high frequency of malformations including round shaped eye and orbits, syndactyly, malformed pinnae, nostrils, lips and jaws. Conclusion: The results obtained substantiate the early finding that Ginkgo biloba can be teratogenic when given to pregnant mothers.

Uzma G.,University of Wah
Chinese Physics B | Year: 2014

Since ferrites are highly sensitive to the additives present in or added to them, extensive work, to improve the properties of basic ferrites, has been carried out on these aspects. The present paper reports the effects of composition, frequency, and temperature on the dielectric behavior of a series of CuxZn1 - xFe2O4 ferrite samples prepared by the usual ceramic technique. In order to improve the properties of the samples, low cost Fe2O3 having 0.5 wt.% Si as an additive is selected to introduce into the system. The dielectric constant increases by increasing the Cu content, as the electron exchange of Cu 2+ <=> Cu+ is responsible for the conduction and the polarization. However, the addition of Si could decrease the dielectric constant as it suppresses the ceramic grain growth and promotes the quality factor at higher frequencies. Dielectric constant ε′ and loss tangent tan δ of the mixed Cu - Zn ferrite decrease with increasing frequency, attributed to the Maxwell - Wagner polarization, which increases as the temperature increases. © 2014 Chinese Physical Society and IOP Publishing Ltd.

Uzma G.,University of Wah
Indian Journal of Pure and Applied Physics | Year: 2015

Nickel-zinc ferrites of composition NixZn1-xFe2O4 (x=0.66, 0.77, 0.88, 0.99) were prepared by the usual ceramic technique. The dielectric properties have been studied as a function of composition and frequency. It is observed that the values of dielectric constant ∈′ and dielectric loss factor tanδ for samples prepared in the present work are much lower and of reduced price than those commercially obtained Ni-Zn ferrites. These low values are attributed to the presence of Si in Fe2O3 powder. It has been found that the ceramic grain growth was suppressed by Si, which results in a decrease in the dielectric constant and dielectric loss factor. The dielectric constant ∈′ and loss tangent tan δ also decrease as the frequency of applied ac electric field increases. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.

Uzma G.,University of Wah
EPJ Applied Physics | Year: 2010

In this paper, some of the results of dielectric study carried out using locally produced low cost Fe2O3 powder with 0.5 wt% of Si additive are being summarized. The dielectric properties were studied as a function of composition, frequency and temperature for a series of Mn xZn1-xFe2O4 ferrite. The samples were prepared by the usual ceramic technique. It was observed that the values obtained for dielectric constant ∈′ and dielectric loss factor tan δ are much lower than those normally obtained for Mn-Zn ferrite prepared by pure Fe2O3 powder. The low values are attributed to the presence of Si, which suppress the ceramic grain growth. The low dielectric loss makes these samples attractive for use at high frequencies. Each of ∈′ and tan δ increases on increasing the temperature. Abnormal dielectric behavior observed for x = 0.99 due to forced migration of Fe ions from A sites to B sites at this composition. © EDP Sciences, 2010.

Uzma G.,University of Wah
Kovove Materialy | Year: 2012

The effect of Si additive on the electrical resistivity measurements of Cu-Zn ferrites was investigated and then used to calculate the activation energy and drift mobility of all the samples. The series was prepared using the conventional ceramic double sintering process for x = 0.66, 0.77, 0.88, 0.99, and X-ray diffraction (XRD) measurements were taken to confirm the formation of ferrite structure. The improved values are attributed to the presence of Si, which can effectively perk up the resistivity. The room temperature dc resistivity decreases with increasing Cu content, which may be due to the Cu +2 → Cu +1 transition. The dc resistivity as a function of temperature range from 303 to 453 K was found to decrease with increasing temperature revealed semi conducting behavior. The results obtained explained that activation energy, Ep, decreases by increasing Cu content x, whereas mobility contradicts this result. It has also been pragmatic that the samples having higher resistivity have low mobility and mobility increases by increasing Cu content x.

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