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59篇 您的检索式:作者名="Yassir"
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1Assessment of the validity of the clinical pathway for colon endoscopic submucosal dissection显示文摘AIM: To determine the effective hospitalization period as the clinical pathway to prepare patients for endoscopic submucosal dissection (ESD). METHODS: This is a retrospective observational study which included 189 patients consecutively treated by ESD at the National Cancer Center Hospital from May 2007 to March 2009. Patients were divided into 2 groups; patients in group A were discharged in 5 d and patients in group B included those who stayed longer than 5 d. The following data were collected for both groups: mean hospitalization period, tumor site, median tumor size, post-ESD rectal bleeding requiring urgent endoscopy, perforation during or after ESD, abdominal pain, fever above 38 ℃, and blood test results positive for inflammatory markers before and after ESD. Each parameter was compared after data collection. RESULTS: A total of 83% (156/189) of all patients could be discharged from the hospital on day 3 postESD. Complications were observed in 12.1% (23/189) of patients. Perforation occurred in 3.7% (7/189) of patients. All the perforations occurred during the ESD procedure and they were managed with endoscopic clipping. The incidence of post-operative bleeding was 2.6% (5/189); all the cases involved rectal bleeding. We divided the subjects into 2 groups: tumor diameter ≥ 4 cm and < 4 cm; there was no significant difference between the 2 groups (P = 0.93, χ 2 test with Yates correction). The incidence of abdominal pain was 3.7% (7/189). All the cases occurred on the day of the procedure or the next day. The median white blood cell count was 6800 ± 2280 (cells/μL; ± SD) for group A, and 7700 ± 2775 (cells/μL; ± SD) for group B, showing a statistically significant difference (P = 0.023, t-test). The mean C-reactive protein values the day after ESD were 0.4 ± 1.3 mg/dL and 0.5 ± 1.3 mg/dL for groups A and B, respectively, with no significant difference between the 2 groups (P = 0.54, t -test). CONCLUSION: One-day admission is sufficient in the absence of complications during ESD or early postoperative bleeding.Takaya Aoki Takeshi Nakajima Yutaka Saito Takahisa Matsuda Taku Sakamoto Takao Itoi Yassir Khiyar Fuminori Moriyasu 2012World Journal of Gastroenterology2012,18,28:22
2Somatic embryogenesis in wild relatives of cotton (Gossypium Spp.)显示文摘Wild cotton species can contribute a valuable gene pool for agronomically desirable cultivated tetraploid cultivars. In order to exploit diploid cotton a regeneration system is required to achieve transformation based goals. The present studies aimed at optimizing the conditions for regeneration of local varieties as well as wild species of cotton. Different callus induction media were tested with varying concentrations of hormones in which sucrose was used as nutritional source. Different explants (hypo-cotyls, cotyledon, root) were used to check the regeneration of both local cotton plants and wild relatives using T & G medium, BAP medium, CIM medium, EMMS medium, and cell suspension medium. Different stages of embryogenicity such as early torpedo stage, late torpedo stage, heart stage, globular stage and cotyledonary stage were observed in wild relatives of cotton. The results of this study pave the way for establishing future transformation methods.RAO Abdul Qayyum HUSSAIN S. Sarfraz SHAHZAD M. Saqib BOKHARI S. Yassir Abbas RAZA M. Hashim RAKHA Allah MAJEED A. SHAHID A. Ali SALEEM Zafar HUSNAIN Tayyab RIAZUDDIN S. 2006Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2006,7,4:9
3Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa显示文摘Microbiologically influenced corrosion(MIC) is a big threat to the strength and safety of many metallic materials used in different environments throughout the world. The metabolites and bioactivity of the microorganisms cause severe deterioration on the metals. In this study, MIC of pure titanium(Ti) was studied in the presence of a highly corrosive aerobic marine bacterium Pseudomonas aeruginosa. The results obtained from electrochemical test showed that Ti was corrosion resistant in the abiotic culture medium after 14 d, while the increased corrosion current density(i_(corr)) obtained from polarization curves and the decreased charge transfer resistance(R_(ct)) from electrochemical impedance spectroscopy(EIS)indicated the accelerated corrosion of Ti caused by P. aeruginosa biofilm. For further confirmation of the above results, the surface of Ti was investigated using scanning electron microscopy(SEM), confocal laser scanning microscopy(CLSM) and X-ray photoelectron spectroscopy(XPS). According to the XPS results, TiO_2 was formed in both abiotic and biotic conditions, while unstable oxide Ti_2O_3 was detected in the presence of P. aeruginosa, leading to the defects in the passive film and localized corrosion. Pitting corrosion was investigated with the help of CLSM, and the largest pit depth found on Ti surface immersed in P. aeruginosa was 1.2 μm. Ti was not immune to MIC caused by P. aeruginosa.M.Saleem Khan Zhong Li Ke Yang Dake Xu Chunguang Yang Dan Liu Yassir Lekbach Enze Zhou Phuri Kalnaowakul 2019Journal of Materials Science & Technology2019,35,1:8
4环境因素对户用光伏板发电效率的影响显示文摘光伏发电系统在单体建筑中被越来越广泛地使用,但是在实际运行条件下,他们的性能得不到理想的发挥,例如环境温度、风速和太阳辐照度等环境因素对户用光伏面板的效率有着重要影响。对位于中国甘肃省武威市民勤县的一座单体建筑在冬季供暖期间进行光伏发电系统试验研究,该试验测试用于量化户用光伏面板的性能和运行特性。试验结果表明,该光伏面板的最大效率为14.75%,最小效率为11.52%;效率最大平均值为13.82%,最小平均值为12.78%。Yassir Idris Abdalla Osman 李金平 甄箫斐 蒋琴 张东 杨捷媛 2019中国农机化学报2019,40,3:4
5Assessment of traffic performance measures and safety based on driver age and experience:A microsimulation based analysis for an unsignalized T-intersection显示文摘Traffic safety and performance measures such as crash risk and queue lengths or travel times are influenced by several important factors including those related to environment,human,and roadway design,especially at intersections.Previous research has studied different aspects related to these factors,yet these characteristics are not fully investigated with a focus on age and experience of drivers.In this paper,we investigate this issue by using a two-phase approach via a case study application on a critical T-intersection in the City of Tallahassee,Florida.The first phase includes a scenario-based microsimulation analysis through the use of a microscopic simulation software,namely VISSIM,to illustrate the variations in traffic performance measures with respect to driver compositions of different age groups in the traffic stream.A variety of scenarios is created where the driving characteristics are provided as inputs to these scenarios in terms of decision making and risk taking.This is also supported by a sensitivity analysis conducted based on the driver composition in the traffic.The second phase includes the analysis of microsimulation outputs via a tool developed by Federal Highway Administration tool,namely the Surrogate Safety Assessment Model(SSAM),in order to determine the traffic conflicts that occur in each scenario.These conflicts are also compared with real-life crash data for validation purposes.Results show that(a) the differences in risk perception that affect driving behavior might be significant in influencing traffic safety and performance measures,and(b) the proposed approach is considerably successful in simulating the actual crash conflict points.Mehmet Baran Ulak Eren Erman Ozguven Ren Moses Thobias Sando Walter Boot Yassir AbdelRazig John Olusegun Sobanjo 2019Journal of Traffic and Transportation Engineering(English Edition)2019,6,5:2
6Corrosion Inhibition of X80 Steel in Simulated Marine Environment with Marinobacter aquaeolei显示文摘In the present study, a novel bacterium( Marinobacter aquaeolei) was examined for its corrosion inhibiting behaviour against X80 pipeline steel. Electrochemical results showed that X80 steel immersed in the solution inoculated with M. aquaeolei possessed very high corrosion resistance compared to that of abiotic control. Besides, scanning electron microscopy, confocal laser scanning microscopy and energy-dispersive X-ray spectroscopy were employed to analyse the corrosion product and the biofi lm formed on the metal surface. Fourier-transform infrared spectroscopy was also applied to determine the composition of extracellular polymeric substances(EPS). Above results indicated that the corrosion inhibition effciency observed in biotic medium was very high(91%), proving that M. aquaeolei was an effective inhibitive agent for the corrosion of carbon steel. The inhibition was credited to the formation of bacterial biofi lm and the compact protective layer of the secreted EPS. Thus, this study will introduce a natural, environmentally friendly and cost-effective system for the corrosion control of the carbon steel.M.Saleem Khan Dake Xu Dan Liu Yassir Lekbach Ke Yang Chunguang Yang 2019Acta Metallurgica Sinica(English Letters)2019,32,11:2
7沉积盆地中异常流体高压与孔隙度和应力场的关系显示文摘研究发现超压与孔隙度之间的关系以及超压与应力场之间的关系是随地质背景和超压形成的机制不同而极为不同。在孔隙压力的预测技术中,以及在建立孔隙压力与最小水平应力的关系式中,必须考虑这些因素。以两个加拿大超压盆地为实例,对此作了说明。N. A. Yassir J. S. Bell 魏小薇 王丽英 1999天然气勘探与开发1999,0,2:2
8Electron transfer mediator PCN secreted by aerobic marine Pseudomonas aeruginosa accelerates microbiologically influenced corrosion of TC4 titanium alloy显示文摘Titanium alloys possess excellent corrosion resistance in marine environments,thus the possibility of their corrosion caused by marine microorganisms is neglected.In this work,microbiologically influenced corrosion(MIC)of TC4 titanium alloy caused by marine Pseudomonas aeruginosa was investigated through electrochemical and surface characterizations during a 14-day immersion test.Results revealed that the unstable surface caused by P.aeruginosa resulted in exposure of Ti_(2)O_(3) and severe pitting corrosion with maximum pit depth of 5.7μm after 14 days of incubation.Phenazine-1-carboxylate(PCN),secreted by P.aeruginosa,promoted extracellular electron transfer(EET)and accelerated corrosion.Deletion of the phzH gene,which codes for the enzyme that catalyzes PCN production,from the P.aeruginosa genome,resulted in significantly decreased rates of corrosion.These results demonstrate that TC4 titanium alloy is not immune to marine MIC,and EET contributes to the corrosion of TC4 titanium alloy caused by P.aeruginosa.Dan Liu Hongying Yang Jianhui Li Jiaqi Li Yizhe Dong Chuntian Yang Yuting Jin Lekbach Yassir Zhong Li David Hernandez Dake Xu Fuhui Wang Jessica A.Smith 2021Journal of Materials Science & Technology2021,,20:1
9Overpressures, fluid flow and stress regimes in the Jeanne Are basin, Canada显示文摘Yassir N A Roges A L 1993International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts1993,30,7:1
10Human rhinovirus C: Age, season, and lower respiratory illness over the past 3 decades显示文摘Jodell E. Linder David C. Kraft Yassir Mohamed Zengqi Lu Luke Heil Sharon Tollefson Benjamin R. Saville Peter F. Wright John V. Williams E. Kathryn Miller 2013The Journal of Allergy and Clinical Immunology2013,,1:1
11Adsorption of dimethyl ether (DME) on zeolite molecular sieves 显示文摘Jai B L Yassir T M 2014Chemical Engineering Journal2014,256,:1
12Nitric oxide-donating nonsteroidal anti-inflammatory drugs inhibit the growth of various cultured human cancer cells:evidence of a tissue type-independent effect显示文摘KHOSROW K YASSIR R LEON L 2002J Pharmacol Exp Ther2002,303,3:1
13Orbital Carcinoid Metastases显示文摘Jodhbir S. Mehta Yassir Abou-Rayyah Geoffrey E. Rose 2006Ophthalmology2006,,3:1
14Somatic embryogenesis in wild relatives of cotton (Gossypium Spp.)显示文摘RAO Abdul Qayyum HUSSAIN S. Sarfraz SHAHZAD M. Saqib BOKHARI S. Yassir Abbas RAZA M. Hashim RAKHA Allah MAJEED A. SHAHID A. Ali SALEEM Zafar HUSNAIN Tayyab RIAZUDDIN S Journal of Zhejiang University Science0,,:1
15The effect of friction and inter-particle cohesive forces on the hydrodynamics of gas-solid flow:A comparative analysis of theoretical predictions and experiments显示文摘Yassir T Makkawi Phillip C Wright 2006Power Technology2006,,163:1
16Estimation of horizontal stresses at depth in faulted regions and their relationship to pore pressure variations 显示文摘Addis M A Last N C Yassir N A 1996SPE Formation Evaluation1996,11,1:1
17Somatic embryogenesis in wild relatives of cotton (Gossypium Spp.)显示文摘Abdul Qayyum Rao S. Sarfraz Hussain M. Saqib Shahzad S. Yassir Abbas Bokhari M. Hashim Raza Allah Rakha A. Majeed A. Ali Shahid Zafar Saleem Tayyab Husnain S. Riazuddin 0,,:1
18Effect of Improvisation on Product Cycle Time and Product Success : A Study of New Product Development (NPD) Teams in the United States显示文摘Samra Yassir M Lynn Gary S Reilly Richard R 2008International Journal of Management2008,25,1:1
19Overpressures,fluid flow and stress regimes in the Jeanne Arc basin,Canada显示文摘Yassir N A Roges A L 1993International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts1993,30,7:1
20WG: A family of stream ciphers with designed randomness properties显示文摘Yassir Nawaz Guang Gong 2007Information Sciences2007,,7:1
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