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154篇 您的检索式:作者名="Jasim"
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1Effect of Al Doping on Structural, Electrical, Optical and Photoluminescence Properties of Nano-Structural ZnO Thin Films显示文摘The nano-structural Al-doped ZnO thin films of different morphologies deposited on glass substrate were successfully fabricated at substrate temperature of 350 C by an inexpensive spray pyrolysis method. The structural, electrical, optical and photoluminescence properties were investigated. X-ray diffraction study revealed the crystalline wurtzite (hexagonal) structure of the films with nano-grains. Scanning electron mi- croscopy (SEM) micrographs indicated the formation of a large variety of nano-structures during film growth. The spectral absorption of the films occurred at the absorption edge of ~410 nm. In the present study, the optical band gap energy 3.28 eV of ZnO decreased gradually to 3.05 eV for 4 mol% of Al doping. The deep level activation energy decreased and carrier concentrations increased substantially with increasing doping. Exciting with the energy 3.543 eV (λ=350 nm), a narrow and a broad characteristic photoluminescence peaks that correspond to the near band edge (NBE) and deep level emissions (DLE), respectively emerged.M. Mozibur Rahman M.K.R. Khan M. Rafiqul Islam M.A. Halim M. Shahjahan M.A. Hakim Dilip Kumar Saha Jasim Uddin Khan 2012Journal of Materials Science & Technology2012,28,4:3
2Chronic abdominal pain secondary to mesenteric panniculitis treated successfully with endoscopic ultrasonography-guided celiac plexus block: A case report显示文摘Mesenteric panniculitis is a chronic illness that is characterized by fibrosing inflammation of the mesenteries that can lead to intractable abdominal pain. Pain control is a crucial component of the management plan. Most patients will improve with oral corticosteroids treatment, however, some patients will require a trial of other immunosuppressive agents, and a minority of patients will continue to have refractory disease. Endoscopic ultrasound guided celiac plexus block is used frequently to control abdominal pain in patients with pancreatic pathology. To our knowledge there are no case reports describing its use in mesenteric panniculitis patients with refractory abdominal pain.Waleed Alhazzani Humaid O Al-Shamsi Eric Greenwald Jasim Radhi Frances Tse 2015World Journal of Gastrointestinal Endoscopy2015,7,5:3
3Role of Composite Phase Change Material on the Thermal Performance of a Latent Heat Storage System: Experimental Investigation显示文摘Paraffin wax is a perfect phase change material(PCM)that can be used in latent heat storage units(LHSUs).The utilization of such LHSU is restricted by the poor conductivity of PCM.In the present work,a metal foam made of aluminium with PCM was used to produce a composite PCM as a thermal conductivity technique in PCM⁃LHSU and water was used as heat transfer fluid(HTF).An experimental investigation was carried out to evaluate the heat transfer characteristics of LHSU using pure PCM and composite PCM.The study included time⁃dependent visualization of the PCM during the melting and solidification processes.Besides,a thermocouple network was placed inside the heat storage to record the temperature profile during each process.Results showed that better performance could be obtained using composite PCM⁃LHSU for both melting and solidification processes.The melting time of composite PCM⁃LHSU was about 83%faster than that of a simple PCM⁃LHSU,and the percentage decreasing in the solidification time was about 85%due to the provision of metal foam.Jasim Abdulateef Ahmed F.Hasan Mustafa S.Mahdi 2020Journal of Harbin Institute of Technology(New Series)2020,27,1:2
4Analytic Hierarchy Process for Evaluating Flipped Classroom Learning显示文摘In reality,the flipped classroom has gained popularity as a modern way of structuring teaching,where lectures move from in-class procedures to digitally-based assignments,freeing up the debate,and practice exercises class time.Therefore,it is essential to implement and analyze a way of teaching that will improve student performance.The paper aims to develop a model of the method of teaching science in Iraqi schools,and to assess whether teaching flipped classroom affects the achievement,motivation,and creative thinking of students by using the methodology of Multi-Criteria Decision Making(MCDM)in the Analytic Hierarchy Process(AHP).The AHP approach includes several steps,including setting assessment criteria and their weights,and by assessing the methodology of the flipped classroom as compared to the conventional cognitive learning process.An experiment was carried out in Iraqi secondary schools to examine the attitude of the students towards the subject of Chemistry.The findings have indicated that the students and teachers favored flipped classroom learning more than conventional cognitive learning.The study took the following parameters compared to the traditional approach:teaching techniques,learning flexibility,teaching aids effectiveness,student participation and working environment.This paper indicates that the teachers in Iraqi schools will be able to improve and do more preparation to shift towards flipped learning in the classroom.Husam Jasim Mohammed Hajem Ati Daham 2021Computers, Materials & Continua2021,,3:2
5Bromate formation in ozone and advanced oxidation processes 显示文摘Arvai A Jasim S Biswas N 2012Ozone: Science & Engineering2012,34,5:1
6Prevention and control of periodontal diseases in developing and industrialized nations显示文摘Per Axelsson Jasim M. Albandar Thomas E. Rams 2002Periodontology 20002002,,1:1
7Influence of axial load on the lateral pile groups response in cohesionless and cohesive soil显示文摘The lateral response of single and group of piles under simultaneous vertical and lateral loads has been analyzed using a 3D finite element approach. The response in this assessment considered lateral pile displacement and lateral soil resistance and corresponding p-y curve. As a result, modified p-y curves for lateral single pile response were improved with respect to the influence of increasing axial load intensities. The improved plots can be used for lateral loaded pile design and to produce the group action design p-multiplier curves and equations. The effect of load combination on the lateral pile group response was performed on three pile group configurations (i.e., 2 × 1, 2 × 2 and 3 × 2) with four pile spacings (i.e., s = 2D, 4D, 6D and 8D). As a result, design curves were developed and applied on the actual case studies and similar expected cases for assessment of pile group behavior using improved p-multiplier. A design equation was derived from predicted design curves to be used in the evaluation of the lateral pile group action taking into account the effect of axial load intensities. It was found that the group interaction effect led to reduced lateral resistance for the pile in the group relative to that for the single pile in case of pure lateral load. While, in case of simultaneous combined loads, large axial load intensities (i.e., more than 6H, where H is lateral load values) will have an increase inp-multiplier by approximately 100% and will consequently contribute to greater group piles capacities.Jasim M. ABBASA Zamri CHIK Mohd Raihan TAHA 2015Frontiers of Structural and Civil Engineering2015,9,2:1
8LTE Heterogeneous Network: A Case Study显示文摘Aubida A Jasim Sami A Mawjoud 2013International Journal of Computer Applications2013,61,8:1
9Multiple endocrine ne- oplasia type 2B with a RET proto-oneogene A883F mutation dis- plays a more indolent form of medullary thyroid carcinoma com- pared with a RET M918T mutation 显示文摘Jasim S Ying A Waguespack SG 2011Thyroid2011,21,:1
10Stability of ZrO2 - Y2 O3 t/Phase formed during laser sealing 显示文摘JASIM M RAWLINGS R D WEST D R F 1992Materials Science and Technology1992,8,1:1
11Long-pulsed (6-ms) pulsed dye laser treatment of rosacea-associated telangiec- tasia using subpurpuric clinical threshold 显示文摘Jasim ZF Woo WK Handley JM 2004Dermatol Surg2004,30,:1
12Long-pulsed (6-ms) pulsed dye laser treatment of rosaeea-assoeiated telangieetasia using subpur- purie clinical threshold显示文摘Jasim ZF Woo WK Handley JM 2004Dermatol Surg2004,30,:1
13Contrasting reactivity of fluoropyridines at palladium and platinum: C--F oxidative addition at palladium, P--C and C--F activation at platinum显示文摘Jasim N A Perutz R N Whitwood A C 2004Organometallics2004,23,:1
14Treatment of pulsed dye laser-resistant port wine stain birthmarks显示文摘Jasim ZF Handley JM 2007J Am Acad Dermatol2007,57,4:1
15532-nm Nd:YAG and 595-nm pulsed dye laser treatment of leg telangiectasia using ultralong pulse duration显示文摘Woo WK Jasim ZF Handley JM 2003Dermatol Surg2003,29,12:1
16Effect of high-hydrostatic pressure and concentration on rheological characteristics of xanthan gum显示文摘Jasim A Ramaswamy H S 2004Food Hydrocolloids2004,18,3:1
17Multiple endocrine neoplasia type 2B with a RET proto-oncogene A883Fmutation displays a more indolent form of medullary thyroid carcinoma compared with a RET M918T nmtation显示文摘Jasim S Ying AK Waguespack SG 2011Thyroid2011,21,2:1
18Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique显示文摘An elliptical initial polarization state is essential for generating mode-locked pulses using the nonlinear polarization rotation technique. In this work, the relationship between the ellipticity ranges capable of maintaining mode-locked operation against different pump power levels is investigated. An increasing pump power, in conjunction with minor adjustments to the polarization controller's quarter waveplate, results in a wider ellipticity range that can accommodate mode-locked operation. Other parameters such as noise, pulsewidth, and average output power are also observed to vary as the ellipticity changes.H. Ahmad S. I. Ooi M. Z. A. Razak S. R. Azzuhri A. A. Jasim K. Thambiratnam M. F. Ismail M. A. Ismail 2017Chinese Optics Letters2017,15,5:1
19Effect of mechanical properties on the adhesive wear of metals 显示文摘 Dwarakadasa E S 1992Mat Sci Letters1992,11,:1
20Effect of high-hydrostatic pressure and concentration on rheological characteristics of xanthan gum显示文摘Jasim Ahmed Ramaswamy H S 2004Food Hydrocolloids2004,18,:1
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