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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.

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. Source

Saleem S.,University of Wah | Bais A.,University of Regina | Sablatnig R.,Vienna University of Technology
Computers and Electronics in Agriculture | Year: 2016

This paper focuses on image matching between satellite imagery and aerial photographs of agriculture land. Feature points are used for image matching. The satellite imagery and aerial photographs were acquired at different times, viewpoints, sensors, and altitudes. Therefore, they possess very high temporal, photometric, and projective differences. When feature points, such as Scale Invariant Feature Transform (SIFT) and Speeded Up Robust Features (SURF) are applied on such images, they demonstrate poor performance. This paper aims at evaluating the performance of SIFT, SURF, and other state of the art feature points in order to determine well deserving feature points for the images of agriculture land. We also propose a new feature point descriptor, i.e. Modified Normalized Gradient SIFT, which obtains on average 1.73-2.37% better performance than other state of the art descriptors. © 2016 Elsevier B.V. Source

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. Source

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. Source

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. Source

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