BahauddinZakariya University

Multān, Pakistan

BahauddinZakariya University

Multān, Pakistan

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Ali I.,BahauddinZakariya University | Islam M.U.,BahauddinZakariya University | Sadiq I.,BahauddinZakariya University | Sadiq I.,University of Punjab | And 7 more authors.
Journal of Magnetism and Magnetic Materials | Year: 2015

A series of (Eu-Ni) substituted Y-type hexaferrite with composition Sr2Co(2 -x)NixEuyFe(12-y)O22 (x=0.0-1, Y=0.0-0.1) were prepared by the surfactant assisted co-precipitation method. The present samples were sintered at 1050 °C for 8 h. The shape of the particles is plate-like which is very advantageous for various applications and the grain size varies from 73 to 269 nm. The values of saturation magnetization (Ms), remanent magnetization (Mr) and magnetic moment (nB) were found to decrease which are attributed to the weakening of super exchange interactions. The values of in-plane Squareness ratios (Mr/Ms) ranging from 0.41 to 0.65 whereas in case of out of plane measurement it varies from 0.30 to 0.62.The investigated samples can be used in perpendicular recording media (PRM) due to high value of coercivity 2300 Oe which is analogous to the those of M-type and W-type hard magnetic. © 2015 Elsevier B.V. All rights reserved.


PubMed | BahauddinZakariya University, Punjab Medical College and Isra University
Type: Journal Article | Journal: JPMA. The Journal of the Pakistan Medical Association | Year: 2015

To determine the levels of oxidant, antioxidant and serum enzymes in thalassaemic children receiving multiple blood transfusions.The case-control study was done from February to August 2012, and comprised thalassaemic children receiving multiple blood transfusions at Allied Hospital, Ali Zeb Foundation, and the Thalassaemia Centre in Hilal-e-Ahmar Hospital, Faisalabad, Pakistan. Healthy subjects were also screened for any related disease condition that could prejudice the results. Blood samples were analysed for the values of total oxidant status, total antioxidant capacity, serum malondialdehyde, catalase, paraoxonase, arylesterase, glutathione peroxidase and ceruloplasmin.There were 180 children in the study; 90(50%) cases and 90(50%) controls. Of the cases, 48(53.3%) were under-weight while the weight of 42(46.7%) was in the normal range. The values of total oxidant status and total antioxidant capacity were significantly (p<0.01) higher in thalassaemic children compared to normal values. Serum malondialdehyde and catalase levels were also considerably elevated (p<0.05), suggesting the increased activity of these enzymes. However, the concentrations of serum paraoxonase, arylesterase, glutathione peroxidase were significantly (p<0.01) lower in cases than the controls, displaying diminished activities during multiple blood transfusions in these patients.Multiple blood transfusions disconcert the levels of oxidants, antioxidants and serum enzymes of thalassaemic children. Oxidative damage is seen because of the increased iron overload in these patients. Hence, regular evaluation of oxidant and antioxidant status should be monitored in thalassaemic patients during initial few years of life.


Hakeem A.,Govtpost Graduate College Jampur | Shakoor A.,BahauddinZakariya University | Irfan M.,BahauddinZakariya University | Ali I.,BahauddinZakariya University | And 4 more authors.
Journal of Ovonic Research | Year: 2014

The alternate current (ac) and direct current (dc) electrical conductivity of polypyrrole doped with strontium hexaferritecompositehas been investigated at different temperatures in the frequency range of 100 Hz to 1 MHz.A conducting polymer, Polypyrrole wassynthesizedbychemical polymerization method and doped with dodecylbenzenesulphonic acid (PPy-DBSA). Y-type hexagonal ferrite Zn2Sr2Fe12O22was prepared bynormalmicroemulsion route. Composite was prepared by mixing the Zn2Sr2Fe12O22with already synthesized conducting polymer PPy-DBSA by 1:1 molar ratio. Phase analysis was performed by using X-ray diffraction (XRD) analysis. The microstructure was examined by scanning electron microscopy (SEM) showing heterogonous distribution of grains. The experimental results showed that the DC electrical conductivity of the composite increased with increasing temperature more rapidly as compared to that of pristine polypyrrole. Activation energy, density of states and hopping length were calculated and found to be influenced by adding ferrites. AC electrical conductivity of the composite are changed with temperature and frequency of applied electric field. © 2014,Journal of Ovonic Research.


Ali I.,University of Agriculture at Faisalabad | Shakeel A.,University of Agriculture at Faisalabad | Saeed A.,University of Agriculture at Faisalabad | Nazeer W.,Muhammad Nawaz Shareef University of Agriculture | And 5 more authors.
Journal of Animal and Plant Sciences | Year: 2016

Combining ability and heterosis for within-boll yield components and fibre quality traits were carried out using line × tester mating system in upland cotton at the University of Agriculture, Faisalabad, Pakistan.Variance due to specific combining ability was greater than general combining ability for all the traits depicting the importance of non-additive genetic effects.The line BH-89 was found to be good general combiner for lint mass per boll, seed volume per 100 seeds, surface area per seed and lint percentage. NIAB-999 was good general combiner for fibre fineness. The third line which was actually the F1 of the first two lines performed better regardingseed number per boll, seed mass per bolland fibre strength.Among testers, NIAB-78 exhibited higher GCA effects for seed number per boll, lint mass per boll and fibre fineness while CIM-1100 proved to be good general combiner for seed volume per 100-seeds, surface area per seed and lint percentage. NIAB-999 × VH-144 exhibited the highest SCA effects regarding seeds per boll and seed mass per boll while the cross NIAB-999 × CIM-70 was considered desirable for seed volume per 100-seeds and surface area per seed. Maximum heterosis over better parent for lint mass per boll and lint percentage was observed for the cross BH-89 × NIAB-78 while for seed volume per 100-seeds and surface area per seed, NIAB-999 × CIM-240 was the best. © 2016, Pakistan Agricultural Scientists Forum. All rights reserved.


Khan M.A.,Islamia University of Bahawalpur | Riaz S.,Allama Iqbal Open University | Ali I.,BahauddinZakariya University | Akhtar M.N.,COMSATS Institute of Information Technology | And 4 more authors.
Ceramics International | Year: 2014

Nanocrystalline Mg0.96Tb0.04Fe2O4 spinel ferrite was prepared by the co-precipitation technique. The polypyrrole was synthesized by in situ polymerization method. The nanocomposites were fabricated by mixing the Mg0.96Tb0.04Fe2O4 ferrite nanomaterials with polypyrrole polymer. The structural, morphological and magnetic properties of nanoferrite powder and nanocomposites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). The results of XRD revealed that the small concentrations of terbium ions are successfully incorporated into the spinel lattice. The intensity of the most intense peak increases with the increase of ferrite contents while its broadening is decreased. FTIR spectra demonstrated that there are interactions between ferrite particles and polypyrrole. SEM showed that the nanocomposites have core shell structure and inhomogeneous grain size distribution. Under the influence of applied magnetic field these nanocomposites displayed hysteresis loops which unfold the ferromagnetic behavior. The magnetic parameters such as saturation magnetization and coercivity of nanocomposites are affected by the increased concentration of ferrite particles. The magnetic parameters of nanocomposites are tailored by controlling the ferrite contents. Super paramagnetic behavior of two compositions (FP1=25% ferrite and FP2=50%) suggested that these ferrite/polymer composites may be recommended for the hyperthermia applications. © 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.


Wasiq M.F.,BahauddinZakariya University | Nadeem M.Y.,BahauddinZakariya University | Mahmood K.,The University of Faisalabad | Warsi M.F.,Islamia University of Bahawalpur | Khan M.A.,Islamia University of Bahawalpur
Journal of Alloys and Compounds | Year: 2015

In this paper, we have grown an 80 nm thick Gd2O3 thin film by electron beam evaporation on glass substrate and fabricated different metal (Al, Cu, Cr and Au) electrodes on grown sample under same condition. To investigate the charge transport mechanism in these metal-semiconductor systems, the electrical conductivities and current-voltage (I-V) measurements have been measured over temperature range of 250-400 K. We have found that Mott variable range hopping (VRH) is responsible for conduction behavior in all systems for entire temperature range. A strong correlation between transport properties and metal work function has been observed. A space charge model successfully explained the decreasing trend of conductivity with increasing the metal work function. The conductivity decreased from 2.9 × 10-5 to 1.8 × 10-11 S/cm as the metal work function increased from 4 to 5.1 eV for Al to Au metals respectively. The ideality factor also increased from 1.67 to 2.2 with metal work function from Al to Au metal. The observed result can be explained as; high work function metal forms higher depletion layer as compared to metal having low work function, which compensate the empty sites available for hopping and consequently decreased the hopping conductivity. © 2015 Elsevier B.V. All rights reserved.


Khalid S.,BahauddinZakariya University | Khalid S.,Quaid-i-Azam University | Khalid S.,University of Manchester | Ahmed E.,BahauddinZakariya University | And 5 more authors.
New Journal of Chemistry | Year: 2015

Diethyldithiocarbamato-metal complexes of the general formula [M(S2CN(Et)2)n] (M = Fe(III), Co(III), Ni(II), Cu(II), Zn(II) and n = 2, 3) have been synthesized and used as precursors for the deposition of iron pyrite (FeS2) and transition metal doped iron pyrite (MxFe1-xS2) thin films on glass and indium tin oxide (ITO) coated glass substrates by aerosol assisted chemical vapour deposition (AACVD). Thermogravimetric analysis (TGA) confirmed that all the five complexes decompose into their corresponding metal sulfides. The iron complex [Fe(S2CNEt2)3] (1) deposited pure cubic pyrite (FeS2) films with granular crystallites at 350°C, whereas at 450°C pyrite and marcasite were deposited. MxFe1-xS2 (where M = Co, Ni, Cu, or Zn) films were deposited by varying the relative concentration of complexes [Fe(S2CNEt2)3] (1) and [Co(S2CNEt2)3] (2), [Ni(S2CNEt2)2] (3), [Cu(S2CNEt2)2] (4) and [Zn(S2CNEt2)2] (5) at 350°C. The formation of a solid solution was confirmed by powder X-ray diffraction (p-XRD). The surface morphology of the films was studied by scanning electron microscopy (SEM) whilst the height profiles of the films were revealed by atomic force microscopy (AFM). The elemental compositions of the films were confirmed by energy-dispersive X-ray (EDX) spectroscopy. To the best of our knowledge, these complexes are the first in their class to be used as single source precursors to deposit MxFe1-xS2 thin films. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2015.


Asif M.,Punjab Medical College | Manzoor Z.,Isra University of Pakistan | Farooq M.S.,Punjab Medical College | Munawar S.H.,Isra University of Pakistan | And 2 more authors.
Journal of the Pakistan Medical Association | Year: 2015

Objective: To determine the levels of oxidant, antioxidant and serum enzymes in thalassaemic children receiving multiple blood transfusions. Methods: The case-control study was done from February to August 2012, and comprised thalassaemic children receiving multiple blood transfusions at Allied Hospital, Ali Zeb Foundation, and the Thalassaemia Centre in Hilal-e-Ahmar Hospital, Faisalabad, Pakistan. Healthy subjects were also screened for any related disease condition that could prejudice the results. Blood samples were analysed for the values of total oxidant status, total antioxidant capacity, serum malondialdehyde, catalase, paraoxonase, arylesterase, glutathione peroxidase and ceruloplasmin. Results: There were 180 children in the study; 90(50%) cases and 90(50%) controls. Of the cases, 48(53.3%) were under-weight while the weight of 42(46.7%) was in the normal range. The values of total oxidant status and total antioxidant capacity were significantly (p<0.01) higher in thalassaemic children compared to normal values. Serum malondialdehyde and catalase levels were also considerably elevated (p<0.05), suggesting the increased activity of these enzymes. However, the concentrations of serum paraoxonase, arylesterase, glutathione peroxidase were significantly (p<0.01) lower in cases than the controls, displaying diminished activities during multiple blood transfusions in these patients. Conclusion: Multiple blood transfusions disconcert the levels of oxidants, antioxidants and serum enzymes of thalassaemic children. Oxidative damage is seen because of the increased iron overload in these patients. Hence, regular evaluation of oxidant and antioxidant status should bemonitored in thalassaemic patients during initial few years of life. © 2015, Pakistan Medical Association. All rights reserved.


Ahmad F.,Nanjing Agricultural University | Ahmad F.,BahauddinZakariya University | Weimin D.,Nanjing Agricultural University | Qishud D.,Nanjing Agricultural University | And 2 more authors.
International Agricultural Engineering Journal | Year: 2015

This study was conducted to develop the 3D DEM model to investigate single disc type furrow opener in paddy soil under no-till soil conditions. Soil tillage is one of the major energy consuming operations in agricultural production. Better understanding of soil tool interaction has significance for the design of tillage tool and their performance. Precision tillage of the soil is required in no-till soil environment. Single disc furrow opener is also used for tillage and crop residue cutting. A field experiment was conducted to evaluate the performance of single disc furrow opener in paddy soil at three depths (3cm,6cm and 9 cm) and three speeds (0.1 m/s,0.2 m/s and 0.3 m/s), using test bench equipped with S type load cell for determination of horizontal and vertical forces. A Lab VIEW program was developed to convert the pressure on the load cells to voltage. The results showed that depth and speed significantly (p<0.05) affected the draft force and vertical pressure on the signal disc. Based on the discrete element modeling (DEM) theory, a discrete element model was developed to simulate the single disc furrow opener using EDEM software. For granular materials, the discrete element modeling is one of the best computer tools to simulate their behavior and interactions. Simulated and field experimental data was compared to determine the applicability in the different working conditions.


PubMed | BahauddinZakariya University
Type: Journal Article | Journal: Pakistan journal of pharmaceutical sciences | Year: 2016

The present diagnostic tests for cancers are expensive and are not accessible by poor. Therefore, it was necessary to explore a diagnostic test accessible by general public. Plasma lipid profile is decreased in all the cancers except in breast cancer, where HDL-cholesterol is decreased while the other lipids are increased. Therefore, plasma lipid profile may be used as diagnostic test for malignancy. As general diagnostic procedures, these laboratory parameters (plasma lipids) should also be co-related with the clinical symptoms of the patient and other diagnostic tools.

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