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Journal of Environmental Sciences 2015年第11期27卷 51-58页

作者： Azhar Abbas muhammad ajaz hussain muhammad Amin muhammad Sher muhammad Nawaz Tahir Wolfgang Tremel Department of Chemistry University of Sargodha Institute of Inorganic and Analytical Chemistry Johannes Guttenberg University

Chemically modified pullulan was evaluated for its sorption efficiency and selectivity to remove cadmium（Cd） from spiked high-hardness groundwater（GW）. Pullulan esterified with succinic anhydride using dimethylaminopyridine showed a fairly high degree of substitution value as confirmed by1 H NMR spectroscopy. Pullulan succinate（Pull-Suc） was converted into the sodium salt（Pull-Suc-Na）. The effect of contact time（5–200 min） and p H（2–8） on Cd-uptake by the sorbent（Pull-Suc-Na） was investigated. The sorbent showed more than 90% Cd-removal in first 15 min from distilled water（DW） and GW solution,respectively. Comparison of Pull-Suc-Na with other polysaccharidal sorbents suggested its high efficiency（DW 476.2 mg/g and GW 454.5 mg/g） and selectivity for the removal of Cd by an ion exchange mechanism, which is further supported by the negative Gibbs free energy values calculated from Langmuir isotherms. A Langmuir isotherm kinetic model provided the best fit for the sorption of Cd using Pull-Suc-Na. The sorbent showed a negligible decrease in Cd-uptake over three regeneration cycles. The thermal stability testing of the sorbents indicated that Pull-Suc-Na（sorbent） is more stable than Pull-Suc.

关键词： Adsorption Cadmium Modified pullulan Succinylation Thermal stability

Effect of the jet production on pseudorapidity, transverse momentum and transverse mass distributions of charged particles produced in pp-collisions at Tevatron energy

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Chinese Physics C 2015年第7期39卷 6-11页

作者： Ali Zaman Mais Suleymanov muhammad ajaz Kamal hussain Khan Department of Physics COMSATS Institute of Information Technology Department of Physics Abdul Wali Khan University Mardan

We investigate the effects of jet production on the following parameters： pseudorapidity, transverse momentum and transverse mass distributions of secondary charged particles produced in pp-collisions at 1.8 Te V,using the HIJING code. These distributions are analyzed for the whole range and for six selected regions of the polar angle as a function of the different number of jets. The obtained simulation results for these parameters are interpreted and discussed in connection to the increase observed in the multiplicity of secondary charged particles as a result of its multi-jet dependence, and are also discussed in comparison with the experimental results from the CDF Collaboration.

关键词： jet production,charged particles in pp-interactions,HIJING,pseudorapidity,transverse momentum,transverse mass

Synthesis and Characterization of Antimony（III） Complexes of Thioamides, and Crystal Structure of {[Sb（Imt）2Cl2]2（u2-lmt）}Cl2 （Imt=Imidazolidine-2-thione）

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Chinese Journal of Chemistry 2011年第2期29卷 254-258页

作者： ajaz Humayun hussain Sajjad Altaf muhammad Stoeckli-Evans Helen Isab Anvarhusein Mahmood Rashid Altaf Shahnila Ahmad Saeed Department of Chemistry University of Engineering and Technology Lahore 54890 Pakistan Institute of Physics University of Neuchdtel Rue Emile-Argand 11 CH-2009 Neuchatel Switzerland Department of Chemistry King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Division of Science and Technology University of Education Township Lahore Pakistan

Antimony（III） complexes of thioamides [thioamides=thiourea （Tu）, N,N＇dimethylthiourea （Dmtu）, tetramethylthiourea （Tmtu）, imidazolidine-2-thione （Imt） and diazinane-2-thione （Diaz）] with the general formulae, Sb（thione）nCl3 （n= 1, 2, 2.5, 3） were prepared and characterized by elemental analysis, IR and NMR （1H, 13C） spectroscopic methods. The spectral data of the complexes are consistent with the coordination of the thiones to antimony（III）. The crystal structure of one of them, {[Sb（Imt）2Cl2]2（u2-Imt）}Cl2 （1）, was determined by X-ray crystallography, which shows that the complex is dinuclear consisting of two [Sb（Imt）2Cl2] units bridged by an Imt molecule. In 1, the antimony atom is bonded to two chlorine atoms, two sulfur atoms of coordinated Imt molecules and one sulfur atom of a bridging Imt molecule. The antimony environment can be considered to be distorted octahedral with one Cl- ion weakly bound to antimony.

关键词： antimony（III） complex thioamide crystal structure spectroscopy

Some Results on the Growth of Polynomials

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Analysis in Theory and Applications 2017年第4期33卷 316-322页

作者： Abdullah Mir ajaz Wani Imtiaz hussain Department of Mathematics University of Kashmir

In this paper, we have studied the Lacunary type of polynomials and proved a result which generalizes as well as refines some well-known polynomial inequalities regarding the growth of polynomials not vanishing inside... 详细信息

关键词： Lacunary polynomial Growth Bernstien-inequality.

A Note on a Theorem of T.J.Rivlin

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Analysis in Theory and Applications 2018年第4期34卷 293-296页

作者： Abdullah Mir ajaz Wani Imtiaz hussain Department of Mathematics University of KashmirSrinagar190006India

In this paper, we obtain a result that improves the results of Govil and Nwaeze, Qazi and the classical result of Rivlin.

关键词： Polynomial maximum modulus zeros

A Simple and Cost-Effective EPON-Based Next Generation Mobile Backhaul RAN Architecture

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Wireless Engineering and Technology 2017年第1期8卷 1-19页

作者： ajaz Sana Syed R. Zaidi Shahab hussain Mohammad Nizamuddin Department of Engineering Physics & Technology Bronx Community College of the City University of New York New York USA Nokia Westford USA Department of Electrical Engineering City College of the City University of New York New York USA

This study proposes a novel, simple and cost-effective PON-based next generation mobile backhaul RAN architecture that enables redistribution of some of the intelligence currently centralized in the Mobile Packet Core (MPC) platform out into the access nodes of the RAN. Specifically, this work proposes a fully distributed ring-based EPON architecture that enables the support of a converged PON-4G/5G mobile WiMAX/LTE access networking transport infrastructure to seamlessly backhaul both mobile and wireline multimedia traffic and services.

关键词： LTE WiMAX 4G EPON TDM PON