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您的检索式：作者名="Imran Hashmi"
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| 1 | Degradation of malathion by Pseudomonas during activated sludge treatment system using principal component analysis (PCA)显示文摘Popular descriptive multivariate statistical method currently employed is the principal component analyses (PCA) method. PCA is used to develop linear combinations that successively maximize the total variance of a sample where th ere is no known group structure. This study aimed at demonstrating the performan ce evaluation of pilot activated sludge treatment system by inoculating a strain of Pseudomonas capable of degrading malathion which was isolated by enrichment technique. An intensive analytical program was followed for evaluating the effic iency of biosimulator by maintaining the dissolved oxygen (DO) concentration at 4.0 mg/L. Analyses by high performance liquid chromatographic technique revealed that 90% of malathion removal was achieved within 29 h of treatment whereas COD got reduced considerably during the treatment process and mean removal efficien cy was found to be 78%. The mean pH values increased gradually during the treatm ent process ranging from 7.36—8.54. Similarly the mean ammonia-nitrogen (NH3-N) values were found to be fluctuating between 19.425—28.488 mg/L, mean nitrite-n itrogen (NO3-N) ranging between 1.301—2.940 mg/L and mean nitrate-nitrogen (NO3 -N) ranging between 0.0071—0.0711 mg/L. The study revealed that inoculation of bacterial culture under laboratory conditions could be used in bioremediation of environmental pollution caused by xenobiotics. The PCA analyses showed that pH, COD, organic load and total malathion concentration were highly correlated and emerged as the variables controlling the first component, whereas dissolved oxyg en, NO3-N and NH3-N governed the second component. The third component repeated the trend exhibited by the first two components. | Hashmi Imran Khan M Altaf Kim Jong-Guk | 2006 | Journal of Environmental Sciences2006，18，4： | 3 |
| 2 | Distribution, toxicity level, and concentration of polycyclic aromatic hydrocarbons (PAHs) in surface soil and groundwater of Rawalpindi, Pakistan显示文摘 | Beenish Saba Imran Hashmi Muhammad Ali Awan Habib Nasir Sher Jamal Khan | 2012 | 2012 (1-3)2012，，1： | 1 |
| 3 | Distribu tion, toxicity level, and concentration of polycyclic aromatic hy drocarbons (PAHs) in surface soil and groundwater of Rawal- pindi, Pakistan 显示文摘 | Beenish Saba Imran Hashmi Muhammad All Awan | 2012 | Desalination and Water Treatment2012，49，13： | 1 |
| 4 | Theoretical investigations of half-metallic ferromagnetism in new Half-Heusler YCrSb and YMnSb alloys using first-principle calculations显示文摘Structural,electronic,and magnetic properties of new predicted half-Heusler YCrSb and YMnSb compounds within the ordered MgAgAs Clb-type structure are investigated by employing first-principal calculations based on density functional theory.Through the calculated total energies of three possible atomic placements,we find the most stable structures regarding YCrSb and YMnSb materials,where Y,Cr(Mn),and Sb atoms occupy the(0.5,0.5,0.5),(0.25,0.25,0.25),and(0,0,0) positions,respectively.Furthermore,structural properties are explored for the non-magnetic and ferromagnetic and anti-ferromagnetic states and it is found that both materials prefer ferromagnetic states.The electronic band structure shows that YCrSb has a direct band gap of 0.78 eV while YMnSb has an indirect band gap of 0.40 eV in the majority spin channel.Our findings show that YCrSb and YMnSb materials exhibit half-metallic characteristics at their optimized lattice constants of 6.67 and 6.56 ,respectively.The half-metallicities associated with YCrSb and YMnSb are found to be robust under large in-plane strains which make them potential contenders for spintronic applications. | M Atif Sattar Muhammad Rashid M Raza Hashmi S A Ahmad Muhammad Imran Fayyaz Hussain | 2016 | Chinese Physics B2016，25，10： | 1 |
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