QAU

Islamabad, Pakistan
Islamabad, Pakistan

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Bakht J.,National Institute for Biotechnology and Genetic Engineering NIBGE | Khan M.J.,Agricultural Research Institute | Khan M.A.,QAU | Raziuddin,University of Agriculture, Peshawar
Pakistan Journal of Botany | Year: 2011

Wheat genotypes were evaluated for salinity tolerance under 3 diverse environments of Yar Hussain, Baboo Dehari (District Swabi KPK Pakistan) and Khitab Koroona (District Charsadda KPK Pakistan). Eleven genotypes (Local, SR-24, SR-25, SR-7, SR-22, SR-4, SR-20, SR-19, SR-2, SR-23 and SR-40) were tested for their salinity tolerance. These locations had different salinity profile (i.e. Yar Hussain, EC. 3-3.5 dS m-1; Baboo Dehari, EC. 4-4.5 dS m-1 and Khitab Koroona, EC. 5-5.30 dS m-1). Different locations and wheat genotypes had a significant (p < 0.05) effect on endogenous shoot proline, shoot ABA (3, 6 and 9 weeks after emergence) and straw yield. Maximum endogenous shoot proline and ABA levels (3, 6 and 9 weeks after emergence) were recorded in genotype SR-40 followed by genotype SR-23. The results further indicated that minimum endogenous shoot proline and ABA concentrations (3, 6 and 9 weeks after emergence) were recorded at Yar Hussain. Maximum endogenous shoot proline and ABA concentration (3, 6 and 9 weeks after emergence) were observed at Khitab Koroona.


Bakht J.,University of Agriculture, Peshawar | Shah R.,University of Agriculture, Peshawar | Shafi M.,University of Agriculture, Peshawar | Khan M.A.,QAU
Pakistan Journal of Botany | Year: 2010

The present field study was carried at Malakandher Research Farms KPK Agricultural University, Peshawar, using randomized complete block design. Seeds of four maize varieties (viz., Azam, Sarhad white, Pahari and Sarhad yellow) were primed with 5 different priming sources i.e. Polyethylene glycol (PEG), Potassium nitrate (KNO3), Sodium thiosulphate (Na2S2O3) and Water (H2O) for 17 hours. Various priming sources and maize varieties had a significant (p<0.05) effect on growing degree days, plant height, number of plants at harvest, number of ears plant-1, number of grains cob-1, thousand grain weight, biological yield, grain yield and harvest index. Growing degree days were maximum (1865) in unprimed seeds. Maximum grains cob-1 (419) and biological yield (8060 kg ha-1) were recorded in KNO3 primed treatments. Among varieties, Sarhad yellow produced maximum (420) grains cob-1 and biological yield Maximum 1000 grain weight (231 g) and grain yield of 3498 kg ha-1 were recorded in Na2S2O3 primed treatments. Among varieties, maximum (239 g) 1000 grain weight and grain yield (3666 kg ha-1) were produced by Sarhad yellow.


Khan I.A.,Government College University at Faisalabad | Noor M.,Government College University at Faisalabad | Rehman A.,Government College University at Faisalabad | Farid A.,Government College University at Faisalabad | And 2 more authors.
EPJ Applied Physics | Year: 2015

Zinc oxide films are deposited on Si substrates by thermal evaporator for different evaporation times (ET). XRD pattern shows the development of different diffraction peaks related to Zn, ZnO and Zn2SiO4 phases which confirms the deposition of composite film. The orientation transformation is observed with increasing ET. The maximum peak intensity of ZnO (1 0 1) plane is observed at 3 h ET. The dislocation density observed in ZnO (1 0 1) plane varies from 1.53 × 10-3 nm-2 to 8.94 × 10-3 nm-2. The lattice parameters of ZnO are found to be a = 3.243 Å and c = 5.197 Å. FTIR analysis confirms the formation of ZnO films. SEM microstructures exhibit the formation nano-wires, nano-bars, nano-strips and nano-needles. The optical energy band gap of ZnO films deposited for various ET varies from 3.98 eV to 4.06 eV. Results show that the peak intensity of ZnO (1 0 1) plane, orientation transformation and the presence of Si content are responsible to increase the energy band gap of ZnO films. © EDP Sciences, 2015.


Minhas A.A.,Al Yamamah University | Shabir K.,Bahria University | Mehmood I.,QAU | Mazyad A.A.,Al Yamamah University | Mazyad A.A.,King Saud University
2013 High Capacity Optical Networks and Emerging/Enabling Technologies, HONET-CNS 2013 | Year: 2013

Wireless and mobile communications play vital role in the field of information and communications technologies (ICT) to have an excellent internet mobility (4G and beyond). In this domain, design of efficient and robust MU-MIMO systems is a challenge for researchers. In this paper, we have proposed a new algorithm named as Layers Ordered Multiple Feedback Successive Interference Cancellation (LOMF-SIC). It is based on Spatial Multiplexed (SM), for uncoded MU-MIMO systems. Proposed algorithm has intrinsic novel idea that exploits the arranging layers according to the decreasing order of channel norm, SNR and SINR values of the received symbols. Arrangements of layers mitigate error propagation in the feedback loop and enhance BER performance. Furthermore, we have also proposed Division of Constellation Diagram (DCD) algorithm used to decide the reliability or unreliability of the detected symbols with low complexity. Simulation results are very encouraging and have shown that combination of our proposed algorithms has outperformed the existing techniques of SNR and channel norm. Simulation results have also shown that LOMF-SIC based on SINR has outperformed MF-SIC and conventional SIC methods. © 2013 IEEE.


Khan I.A.,Government College University at Faisalabad | Noor M.,Government College University at Faisalabad | Rehman A.,Government College University at Faisalabad | Kanwal N.,Government College University at Faisalabad | And 5 more authors.
Journal of Optoelectronics and Advanced Materials | Year: 2016

The polycrystalline zinc aluminum oxide (P-ZnAlO) composite films are deposited on Si for different (2 hrs, 3 hrs and 4 hrs) evaporation time (ET) by thermal evaporator. The XRD patterns confirm the development of different diffraction peaks related to ZnO (101, ZnO (002), ZnO (100) and Al2O3 (400) phases. The peak intensity of ZnO (100) plane is maximum when the film is deposited for 4 hrs ET. The crystallite size of Al2O3 (400) and ZnO (002) plane is found to be 25.43 nm and 11.58 nm whereas it is 14.72 nm for Al2O3 (400) plane and 33.65 nm for ZnO (100) plane for 3 and 4 hrs ET respectively. The decrease in crystallite size of Al2O3 (400) plane is associated with the orientation transformation of ZnO phase and rearrangement of crystallites of Al2O3 (400) phase with increasing ET. The orientation transformation of ZnO phase is associated with the increase of ET. The dislocation density observed in different planes decreases with the increase of crystallite size. The SEM microstructure shows that the formation and growth of nano-particles having various shapes, sizes and distribution are associated with the increase of ET. The EDS spectrum confirms the presence of Zn, Al and O in the deposited P-ZnAlO composite films. The optical energy band gap of P-ZnAlO film varies from 3.39 eV to 3.9 eV with the increase of ET. © 2016, National Institute of Optoelectronics. All rights reserved.


Razzaq H.,University of Liverpool | Qureshi R.,QAU | Schiffrin D.J.,University of Liverpool
Electrochemistry Communications | Year: 2014

An anthraquinone-Au140 gold nanoparticle hybrid system has been synthesised and its electron transfer properties investigated. The incorporation of nanoparticles as part of a molecular linker resulted in fast electron transfer through an otherwise blocking film. © 2013 Elsevier B.V. All rights reserved.


Adeel M.,NWFP. UET | Muaz M.,NWFP. UET | Latif A.,QAU | Mahmud S.A.,NWFP. UET
Proceedings - 10th International Conference on Frontiers of Information Technology, FIT 2012 | Year: 2012

The GPS data received by a receiver, embedded into a moving vehicle, encounter the distance inaccuracy due to close-in multipath of reflected signals of adjacent moving vehicles. The said inaccuracy cause a failure of sub-lane detection of the vehicle that pass through a specific lane. Increasing the sensitivity level of the received signals, the inaccuracy can be controlled up to a great extent. In this paper we are interested in finding out the best condition to enhance the sensitivity level of received symbols. This is achieved through up-gradation of probability of detection of the received signals. Similarly, the process is refined up to a great extent by selecting the best discriminator function response (DFR) for the purpose of decreasing root mean square error (RMSE). Moreover, the best DFR is selected in order to increase the convergence rate for a certain discriminator which results in increase of sensitivity level of the received GPS symbols. The best optimized solution provides up to 4cm accuracy in selected DGPS receiver. © 2012 IEEE.


Adeel M.,NWFP UET | Latif A.,QAU | Muaz M.,NWFP UET | Mahmud S.A.,NWFP UET
Proceedings - 10th International Conference on Frontiers of Information Technology, FIT 2012 | Year: 2012

Main research in focus nowadays in the area of wireless sensor networks (WSN) is optimizing solution of energy gain. Techniques for optimizing power usage in WSNs have been developed in this paper. The goal is achieved by exploiting a decrease in cross-over distance between error correcting coded (ECC) information signals and its un-coded version. A decrease in total energy gain is observed from the practical data acquisitioning. From analysis presented in this paper, the overall 22% energy gain in ECC coded data was observed with the theoretical analysis and results obtained using MATLAB. The modulation schemes under test were MPSK, MFSK and MQAM. Furthermore, the presented idea has opened ways for researchers to exploit other means to bring a decrease in cross-over distance so that further gain of energy in WSNs can be possible. © 2012 IEEE.

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