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Photodetachment of Di-atomic Negative Ion H^(-)_(2) near a Surface

Chinese Physics Letters 2012年第5期29卷 89-92页

作者： Muhammad Haneef Saleh Mohammad Suneela Arif jehan akbar Nasrullah Shah Imran Ullah Department of Physics Hazara UniversityGarden CampusMansehraPakistan Department of Chemistry Abdul Wali Khan UniversityMardanPakistan

We describe the effects of plane surface on the photo-detached electron spectra from H^(-)_(2).A z-polarized laser is used for the detachment of *** detached electron flux and photodetachment cross section are *** exists strong dependence on the distance of the H^(-)_(2) from the surface and also on the separation of atomic centers of H^(-)_(2).The results show strong oscillations for smaller values of distances,whereas for larger values the oscillating structure disappears.

关键词： atomic oscillating separation

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Detached Electron Spectra from H- near a Partially Reflecting Spherical Surface

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Chinese Physics Letters 2012年第7期29卷 80-83页

作者： Muhammad Haneef Saleh Mohammad jehan akbar Suneela Arif Muhammad Zahir Humayun Khan Department of Physics Hazara UniversityGarden CampusMansehraPakistan Department of Statistics University of PeshwarPakistan

The photodetachnent of a hydrogen negative ion (H-) near a partially reflecting surface with a spherical shape is investigated by a theoretical imaging *** expressions for the detached electron flux and total photodetachment cross section are *** is found that two parameters,*** radius Tc and reflection parameter K,control the photodetachment ***,these parameters can be used for the classification,identification and revelation of minor details like curvature of different types of surfaces.

关键词： curvature Electron details

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Standardization of proton-induced x-ray emission technique for analysis of thick samples

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Chinese Physics B 2015年第9期24卷 171-176页

作者： Shad Ali Johar Zeb Abdul Ahad Ishfaq Ahmad M.Haneef jehan akbar Department of Physics Hazara University National Center of Physics (NCP)

This paper describes the standardization of the proton-induced x-ray emission（PIXE） technique for finding the elemental composition of thick samples. For the standardization, three different samples of standard reference materials（SRMs） were analyzed using this technique and the data were compared with the already known data of these certified SRMs. These samples were selected in order to cover the maximum range of elements in the periodic table. Each sample was irradiated for three different values of collected beam charges at three different times. A proton beam of 2.57 Me V obtained using 5UDH-II Pelletron accelerator was used for excitation of x-rays from the sample. The acquired experimental data were analyzed using the GUPIXWIN software. The results show that the SRM data and the data obtained using the PIXE technique are in good agreement.

关键词： standardization thick samples PIXE analysis

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The Effects of Spherical Surface and Laser Polarization on the Photodetachment Cross Section of H^-

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Communications in Theoretical Physics 2013年第3期59卷 356-360页

作者： Muhammad Haneef Suneela Arif jehan akbar Nasrullah Shah Muhammad Zahir Aneela Shamim Hameed Ullah Lab of Atom and Quantum Interference Department of PhysicsHazara UniversityGarden CampusMansehraPakistan Department of Chemistry Abdul Wali Khan UniversityMardanPakistan Department of Statistics University of PeshawarPakistan Department of Chemistry Hazara UniversityGarden CampusMansehraPakistan

We report the combined effects of laser polarization and curvature of the spherical surface on the detached electron spectra from H-. The Theoretical imaging method is used as a tool of investigation. The photodetachment cross sections for various polaxization angles, radii of curvatures and inter ion surface distances axe displayed. The analysis of the spectra reveals that the laser polarization angle θL, curvature of the surface τc and inter ion surface distance d strongly affect oscillations in the spectra. Therefore, a fine control on the laser polaxization and that of curvature in the surface can be used to control oscillations in the photodetachment of negative ions.

关键词： negative ions photodetachment spherical surface

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一种具有多种谐振模式的太赫兹超表面器件

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半导体光电 2024年第2期45卷 181-187页

作者：马勇徐应松盛宏远陈鑫黎人溥陈前斌周幸叶陈沁 Anthony Vickers jehanakbar 马晓燠重庆邮电大学光电工程学院重庆400065 河北半导体研究所石家庄050057 暨南大学纳米光子学研究院广州511443 重庆太赫智芯科技发展有限公司重庆400060 哈扎拉大学巴基斯坦曼塞赫拉21300 四川文理学院智能制造学院四川达州635000

设计了一种中心对称的分裂环形状超表面结构,该结构具有偏振不敏感和高品质因子的特性。通过理论和实验研究,深入分析了其谐振点的频谱特性,并确定了谐振峰的模式,包括LC、偶极和高阶谐振等。其中,几种高阶谐振模式表现出较高的高品质因... 详细信息

设计了一种中心对称的分裂环形状超表面结构,该结构具有偏振不敏感和高品质因子的特性。通过理论和实验研究,深入分析了其谐振点的频谱特性,并确定了谐振峰的模式,包括LC、偶极和高阶谐振等。其中,几种高阶谐振模式表现出较高的高品质因数Q(约230),并且对超表面衬底材料的介电常数变化高度敏感。此外,还研究了具有不对称超表面结构的电磁性质,发现通过分别增加超表面结构沿水平轴(x轴)和垂直轴(y轴)的不对称性,可以产生和增强0.332THz和0.210THz的谐振。

关键词：太赫兹超材料高品质因素谐振模式

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Isolation and Identification of Multi-Drug Resistant Strains of Non-Lactose Fermenting Bacteria from Clinical Isolates

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Open Journal of Medical Microbiology 2014年第2期4卷 115-123页

作者： Minhas akbar Muhammad Zahid Pir Asmat Ali Aftab Alam Sthanadar Mudassir Shah Iram Alam Sthanadar Muhammad Kaleem Muhammad Aslam Khayyam Zahirullah Syeda Mahreen Ul Hassan Noor jehan Muhammad Ismail Khan Department of Microbiology Shaheed Benazir Bhutto Women University Peshawar Pakistan Department of Zoology Islamia College University Peshawar Pakistan Department of Zoology Islamia College University Peshawar Pakistan Department of Zoology and Animal Sciences Post Graduate College Dargai Malakand Pakistan Department of Zoology Islamia College UniversityPeshawar Pakistan Government Degree College Dara Adam Kheil FR Kohat Pakistan Lady Reading Hospital Peshawar Pakistan

Purpose: We studied the drug resistance of different microbes from clinical isolates. The morphological characteristics of bacteria were observed through culture characteristics and by carrying out gram staining techniques while the biochemical characteristics of bacteria were carried out by biochemical test. Methods: A total of 324 samples were collected from suspected patients visiting different hospitals at district Peshawar. For morphological identification, samples of clinical isolates were analyzed by blood agar, MacConkey agar and Eosine Methylene Blue, identified by gram staining and characterized by different biochemical tests. Antibiotic Sensitivity test by Modified Kirby-Bauer Disc diffusion method was used to test the in-vitro susceptibility of the identified isolates to different antibiotics such as Ceftazidime, Ceftazidime, Ceftriaxone, Cefepime and Imipenem. Results: These resistant non-lactose fermenting gram negative bacteria were isolated from samples of pus/wound (33.30%, n = 108/324), blood (33.30%, n = 108/324), urine (23.30%, n = 75/324) and from ascetic/pleural fluids (10.20%, n = 33/324). The study revealed that the percentage of non-fermenting bacterial infection was higher in females (53%) as compared to males (47%) along with higher infection observed in the age group of 11 - 30 years. Pseudomonas aeroginosa showed high resistance against Cefepime (88.80%), followed by Cefoperazone (55.50%), Ceftazidime (48.10%), Ceftriaxone (33.30%). Imipenem was active with low resistance (7.40%). More resistance was seen in Morganella morganii against Imipenem (66.70%) followed by Cefoperazone (55.50%), Ceftriaxone (55.50%). Cefepime showed low resistance (11%). Multi-drug resistant Proteus mirabillis was highly resistance to Ceftriaxone (74.07%), followed by Cefepime (59.20%), Cefoperazone (44.40%) and low resistance for Imipenem (25.90%). Salmonella typhi demonstrated high resistance against Imipenem (74.07%), followed by Ceftriaxone (40.70%), Ceftazi

关键词： Multidrug Resistant Non-Lactose Fermenting Gram Negative Bacteria Disc Diffusion Technique

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