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Room Temperature Magnetic Behavior of Sol-Gel Synthesized Mn Doped ZnO

Chinese Journal of Chemical Physics 2010年第4期23卷 469-472,I0002页

作者： Murtaza Saleem Saadat A. Siddiqi shahid Atiq M. Sabieh Anwar Saira riaz 旁通普大学固态物理中心拉赫尔54590 拉赫尔管理科学大学科学与工程学院拉赫尔54792

Mn doped ZnO nano-crystallites were synthesized by state of the art sol-gel derived auto- combustion technique. As-burnt powder was investigated with different characterization techniques to explore the properties of Mn doped ZnO dilute magnetic semiconductor. X- ray diffraction measurements indicate that Mn doped ZnO retain wurtzite type hexagonal crystal structure like ZnO. Compositional and morphological studies were carried out by energy dispersive X-ray analysis and scanning electron microscopy, respectively. Temperature dependent resistivity of the sample exhibited the semiconducting behavior of the DMS material. Room temperature magnetic properties determined by vibrating sample magnetometer, revealed the presence of ferromagnetic and diamagnetic contributions in Mn doped ZnO.

关键词： Nanocrystal Diluted magnetic semiconductor Auto-combustion Room temperature ferromagnetism

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The RFID-Based Manufacturing and Inventory Revolution

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Computer Aided Drafting,Design and Manufacturing 2005年第1期15卷 46-51页

作者： HAMIDULLH Khan Niazi riaz Ahmed shahid Ikramullah Butt School of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 ChinaSchool of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 ChinaSchool of Mechanical and Vehicle Engineering Beijing Institute of Technology Beijing 100081 China

Radio frequency identification (RFID) is a contactless form of automatic identification and data capture (AIDC) technology. This paper explores the use of RFID in the new field of manufacturing automation and quality control. This paper consists of five parts. The first part gives a brief background and introduction of technology. The proposed use of RFID technology in the field of manufacturing automation and quality control is discussed in second part. The third part covers its use in the field of warehouse management system. Part four is a local review and analysis of RFID technology in manufacturing and warehousing which would support the potential use of this technology locally at China. The last part of paper gives concluding remarks about the RFID technology with recommendations of RFID use in these areas.

关键词： RFID EPC manufacturing automation warehousing AIDC

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Lyapunov Based Control for One Qubit Quantum Gates in Coherence Vector Formulation

Lyapunov Based Control for One Qubit Quantum Gates in Cohere...

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第37届中国控制会议

作者： Bilal riaz Shuang Cong shahid Qamar Department of Automation University of science and Technology of China

The design of one qubit quantum gates with Lyapunov-based method is studied in this paper. Firstly, one qubit quantum control system is described in the coherence vector formation, then two types of Lyapunov functions are selected to implement NOT gate. The performances of control laws derived from both Lyapunov functions are compared and analyzed by means of the simulations for the NOT gate implementation.

关键词： Qubit Quantum Gates Lyapunov-based Control coherence vector

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Modulation of antiviral cytokine production and lung protection against influenza virus by the glycosides from Ligustrum purpurascens

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Asian Toxicology Research 2021年第1期3卷 23-31页

作者： Chen-Yang Li Xiao-Jun Zhong Xiao-Peng Hu Qin-Chang Zhu Hai-Tao Xiao Peng Zhai Da-Hong Yao muhammad shahid riaz Zhen-Dan He Xun Song School of Pharmaceutical Sciences Health Science CenterShenzhen UniversityShenzhen 518060China Shenzhen Nanshan People’s Hospital Shenzhen 518060China Faculty of Information Technology Macao University of Science and TechnologyMacao 999078China Shenzhen Technology University Shenzhen 518118China

Ligustrum purpurascens has been used as a traditional herb for over 2,000 years in *** study was design to investigate the modulation of antiviral cytokines and reduction in lung inflammation of virus-infected mice by the glycosides isolated from Ligustrum ***:Ligustrum purpurascens glycosides(LPG)were isolated from the leaves of Ligustrum *** of spleen lymphocytes were investigated after LPG *** in vitro and in vivo cytokine modulation of LPG was ***,the anti-inflammatory and antiviral activities of LPG,with the potential to reduce inflammatory lung disorders,were investigated by influenza A virus infected ***:LPG could significantly promote the proliferation,and also could stimulate the production of IFN-γby spleen lymphocytes in a dose-dependent ***-γexpression level was increased significantly compared to the control and presented a dose-dependent manner in ***,LPG inhibit the expression of TNF-αand IL-10,which return to normal level in the cyclophosphamide-induced mice model in ***,the histopathological analysis indicated LPG reduced acute lung injury in mice infected with influenza ***:This study suggested that LPG could increase the exression of IFN-γ,immunoregulation and decrease lung inflammation of virus-infected mice.

关键词： Ligustrum purpurascens Glycosides Cytokines Immunoregulation Antiviral

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Induced modifications in the properties of Sr doped BiFeO3 multiferroics

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Progress in Natural Science:Materials International 2013年第5期23卷 487-492页

作者： Tanvir Hussain Saadat A.Siddiqi shahid Atiq M.S.Awan Centre of Excellence in Solid State Physics Quaid-e-Azam CampusUniversity of the Punjab Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS Institute of Information Technology Department of Physics COMSATS Institute of Information Technology

Multiferroics exhibit unique combination of ferroic properties,*** instance,in BiFeO3,magnetic and electric properties *** this work,BiFeO3 and Sr-doped BiFeO3 samples with general formula,Bi1-x Srx FeO3(x=0.00,0.05,0.10,0.20,and 0.30) were synthesized by sol-gel auto-combustion technique,in order to investigate these ferroic *** samples were confrmed to have perovskite type rhombohedral structure,characteristic of BiFeO3.A dilute phase of Bi2Fe4O9was also found in all the Sr-doped *** micrographs of the palletized samples revealed that minutely doped Sr might not have any effect on the morphology of the *** dependent dielectric measurements were carried out at room temperature for all the samples from 100 Hz to 1 *** dielectric constant of un-doped sample at low frequency was 52 which decreased with increasing Sr *** enhancement of magnetic properties was observed with increasing the Sr *** BiFeO3 material was observed to have the least value of remanent *** the Sr2+ tions were doped in BiFeO3,its magnetization and remanence were increased to 0.867 emu/g and 0.175 emu/g,respectively,at x=0.30.

关键词： Bismuth ferrite Ferroelectricity Ferromagnetism Nanomaterials Magnetically ordered materials

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结晶器保护渣评估结果

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世界钢铁 2013年第3期13卷 1-7页

作者： Arghya Dey shahid riaz 丁占元塔塔钢铁公司欧洲部

在连铸过程中,保护渣起着提高产品表面质量、提供适宜的润滑和绝热保温等作用,因此,保护渣的正确选择对单个钢种是至关重要的。为了获得良好的表面质量,选择合适的保护渣目前仍然是一个难题。广泛采用的办法是使用供应商推荐的在其他工... 详细信息

在连铸过程中,保护渣起着提高产品表面质量、提供适宜的润滑和绝热保温等作用,因此,保护渣的正确选择对单个钢种是至关重要的。为了获得良好的表面质量,选择合适的保护渣目前仍然是一个难题。广泛采用的办法是使用供应商推荐的在其他工厂试验成功的保护渣以及在工业试验中获得成功的保护渣。这些新型保护渣的工业试验不仅导致极大的操作费用,而且带来了连铸机损坏的隐患(漏钢、结晶器磨损和停机)。此外,对于已选择的保护渣,即使在正常的成分范围内,其表现的性能也是不同的。新钢种需求的增长和当前经济的不平衡,导致塔塔钢铁公司欧洲工厂通过保护渣试验,寻找其替代品。为了研究与钢水成分、不同的浇注参数和产品表面质量相关的保护渣的行为,蒂塞德技术中心(TTC)启动了一项保护渣评估试验工作。在塔塔钢铁公司欧洲工厂进行了几次在线和离线的监测,收集了多个钢水试样、原始保护渣、渣膜和渣圈试样,并分析了不同浇次的有关保护渣、熔融层厚度、振痕和表面质量的数据。保护渣特性分析技术,如粘度测量、STA热分析、金相学、化学分析已经被应用于这个评估试验。试验观察到顶渣中氧化铝含量增加的同时,伴随有不同化合物的吸收和减少现象。试验证明:氧化铝、氧化钙、氧化硅和氧化锆化合物的增加和减少会影响保护渣的性能。

关键词：保护渣特性斜板试验粘度

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