Structural, Optical and Magnetic Properties of Perovskite (La1-xSrx)(Fe1-xNix)O3, (x = 0.0, 0.1 & 0. 2) Nanoparticles

Abdullah A. Saad,Wasi Khan,Pooja Dhiman,A. H. Naqvi,M. Singh,유춘리 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.1

Nanoparticles (NPs) of (La1-xSrx)(Fe1-xNix)O3, (x = 0.0, 0.1 & 0.2) with orthorhombic perovskite structure was successfully prepared through the sol-gel combustion method. The structural, optical and magnetic properties of the NPs were studied by x-ray diffraction (XRD), scanning electron microscopy (SEM) equipped with an energy dispersive x-ray spectrometer (EDS), UV-Vis. Spectrometer and magnetization measurements. The crystallite size was estimated from x-ray diffraction (XRD) patterns, which decreases with increase in Sr and Ni contents and SEM images exhibit formation of agglomerated NPs for pure and doped samples. The absorbance has a tendency to increase with the increase in dopant concentration and band gap increases with Sr and Ni contents. Magnetization measurement revealed ferromagnetic nature of all samples at room temperature.

SUPPLEMENTATION OF GRAZING SHEEP WITH BARLEY GRAIN VERSES UREA-MOLASSES BLOCKS AT MASLAKH RANGE OF BALUCHISTAN, PAKISTAN

Mirza, I.H.,Naqvi, M.A.,Syed, A.H.,Qudoos, A. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.3

Sixtyfour Baluchi lambs about 5 months of age were divided into four groups with 16 lambs each. All the animals were grazed together. Group No.1 (G-1) was kept as control i.e. on grazing only; while group No. 2 (G-2) was offered barley grain @ 200 g/head/day as supplement to grazing; Group No. 3 (G-3) was offered ad-lib urea-molasses block (UMB) with 6% cement and group No.4 (G-4) was fed ad-lib IMB having 8% cement. These UMB were fed as supplement to grazing. Experiment lasted for 105 days (July to October) in arid zone of Baluchistan. Daily per head consumption of block No.1 was found to be 92.71 g; while that of block No.2 was observed to be 90.77 g. Growth rate (g/head/day) was found to be 10, 50, 33 and 15 in G-1, G-2, G-3 and G-4 respectively. Expenditure/kg bodyweight gain was found to be rupees 12.00, 3.64 and 7.74 for G-2, G-3 and G-4 respectively.

FEEDLOT FATTENING OF SHEEP IN PAKISTAN

Jadoon, J.K.,Syed, A.H.,Mirza, I.H.,Naqvi, M.A. Asian Australasian Association of Animal Productio 1990 Animal Bioscience Vol.3 No.3

Ninety six Rambouillet ${\times}$ Kaghani intact male lambs of 18 months of age were divided into 6 groups of 16 lambs each, groups being G-1, G-2, G-3, G-4, G-5 and G-6. Average liveweight of animals on different treatments at day 0 of the experiment was G-1 (24.68 S.D 3.35), G-2 (24.56 S.D 2.55), G-3 (24.53 S.D 2.90), G-4 (24.51 S.D 3.38), G-5 (24.58 S.D 3.58) and G-6 (24.81 S.D 3.43). Animals on treatment G-1 were fed only maize silage ad libitum, G-2 had been offered maize silage ad libitum plus 4.8 kg of commercial concentrate (Sona Vanda) per group, G-3 maize silage ad libitum plus 4.8 kg of crushed maize grain per group. G-4 lambs were fed oat silage ad libitum plus 4.8 kg of crushed maize per group, G-5 oat silage plus 4.8 kg of commercial concentrate per group and G-6 only oat silage ad libitum. The results showed highly significant differences (p<0.01) among treatment groups in silage intake throughout the feeding trial. G-2 group showed the highest silage intake while treatment G-4 showed the lowest silage intake for the first two months and treatment G-6 for the last two months. The results of growth rates (g/d/animal) showed that treatments G-1 and G-6, where no supplementation was given, had a weight loss throughout the feeding trial. However, weight loss in treatment G-6 was more severe than treatment G-1. Treatments G-2, G-3, G-4 and G-5 all showed weight gain however, treatment G-2 had the most gain. G-2 group also showed the highest wool production while G-6 the lowest. These results indicated that silage when made from full bloom crops of oats and silage fed alone without any supplementation causes weight loss in sheep. Supplementation with concentrates having 19% CP is far better than the crushed maize grain and maize silage is better than oats silage. Maize silage is superior than oat silage however, better performance could be expected if silages were made at the early bloom (dough) stage of plant maturity. The results indicate that treatment G-2 shows highest response while treatment G-6 the lowest. So the response of different treatments on both the parameters of weight gain and wool production is almost similar.

PERFORMANCE OF LAMBS FED UREA MOLASSES BLOCKS vs CONCENTRATE

Mirza, I.H.,Jadoon, J.K.,Naqvi, M.A.,Ali, A. Asian Australasian Association of Animal Productio 1988 Animal Bioscience Vol.1 No.1

Thirty five crossbred male lambs of about 8 months age, with an average body weight of 24 kg were divided into 7 groups of 5 lambs each and were fed urea molasses blocks (UMB) for 150 days (groups 1 to 5); having, 4, 6, 8 and 10% urea respectively; while group 6 was fed concentrate @318 g per head daily and 7th group was kept as control i.e. grazing only. Daily consumption of UMB/concentrate was found to be 318, 246, 211, 93 and 318 g/d for groups 1 to 6, respectively. The statistical differences in consumption between group 1 and group 6, and group 2, 3 and 4 were found to be non-significant. Only group 5 differed statistically from all other groups. The average daily gain was 48, 29, 39, 38, 25 and 66 grams for groups 1 to 6 respectively, while group no. 7 lost 11 g/head/day. The differences in weight gain among groups 1, 3, 4 and 6 were non significant. The expenditure per kg body weight gain was found to be ($Rs^C$) 9.53, 12.45, 8.05, 7.99, 3.69 and 10.85 for groups 1 to 6, respectively.

RESULTS FROM ADAPTABILITY TRIAL OF RAMBOUILLET SHEEP AND THEIR CROSSBREEDING WITH KAGHANIS. EFFECTS ON EWE MATING WEIGHT, WOOL PRODUCTION, LITTER SIZE AND LAMB GROWTH

Nawaz, M.,Meyer, H.H.,Jadoon, J.K.,Naqvi, M.A. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.3

In order to upgrade native sheep, Rambouillet (R) rams were mated to Kaghani (K) ewes to generate F1 ($R{\times}K$) crossbred ewes. Crossbred ewes were backcrossed to Rambouillet rams to produce B1 ($R{\times}F1$), B2 ($R{\times}B1$) and B3 ($R{\times}B2$) genotypes. Weaning weight of 2605 lambs and wool weight of 2378 mature ewe records, representing R, K, F1, B1, B2 and B3 genotypes, were analyzed to compare genetic variation among genotypes produced during upgrading process and identify genotypes of the highest performance. Performance of Rambouillets was also evaluated under semi-temperate climate. Data were adjusted for yearly variation considering Rambouillet as a control. Genotypes influenced lambs weaning weight (p<.01). B1 lambs were heaviest (18.4 kg) followed in order by B2, F1, B3, R and K lambs (18.3, 17.9, 16.9, 16.8 and 13.2 kg, respectively). The highest wool production was 2.5 kg from R ewes followed by B2 (2.3), B3 (2.3), F1 (2.0) and K (1.2) ewes (p < .01). Ewe mating weight, reproduction, growth and wool production of Rambouillets deteriorated significantly after the first decade of their importation. Compared with the first phase (1959-1971), ewe mating weight, litter size, birth weight, lamb weaning weight and wool production declined by 20, 23, 32 and 36%, respectively, in the second phase (1972-1988).

Homocysteine promotes human endothelial cell dysfunction via site-specific epigenetic regulation of p66shc

Kim, C. S.,Kim, Y. R.,Naqvi, A.,Kumar, S.,Hoffman, T. A.,Jung, S. B.,Kumar, A.,Jeon, B. H.,McNamara, D. M.,Irani, K. Oxford University Press 2011 Cardiovascular research Vol.92 No.3

Influence of Cr incorporation on structural, dielectric and optical properties of ZnO nanoparticles

M. Mehedi Hassan,Wasi Khan,Ameer Azam,A. H. Naqvi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

This study demonstrated the effect of Cr doping on structural, dielectric and optical behavior of ZnOnanoparticles synthesized through sol–gel method. Characteristic investigations have been carried outby X-ray diffraction, Field emission scanning electron microscope, Energy dispersive X-ray spectrometry,and Transmission electron microscope. The results confirmed the formation of nanoparticles inpolycrystalline single phase with hexagonal wurtzite structure. The crystallite size has been found tovary around 20 nm. Dielectric studies were carried out by Impedance spectroscopy. The decrease effectof dielectric parameters with increase in dopant has been explained on the basis of Maxwell–Wagnermodel and Koops phenomenological theory. The impedance analysis suggested that the contribution ofgrain boundaries is dominating over grain contribution. A red shift in UV–vis spectra signified that bandgap can be tuned by Cr doping from 3.32 to 3.22 eV because of the s–d and p–d exchange interactions.