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| 1 | 硬实时系统中基于软件容错的动态调度算法显示文摘在硬实时系统中,由于任务超时完成将会导致灾难性后果,因而硬实时系统具有严格的时间及可靠性限制条件.目前实时容错调度算法大部分针对硬件的容错,很少考虑软件运行的故障.提出了两种类似EDF(earliest deadline first)的软件容错的动态实时调度算法:PKSA(probing K-step algorithm)和CUBA(changing utilization-based algorithm).两种算法在任务执行过程中,通过若干试探性检测步骤,提高了任务可执行性的预测,尽可能地避免了任务早期的失败对后续任务的影响,因此提高了任务的完成率,同时也有效地减少了浪费的CPU时间片数量.通过实验测试,与目前所知的同类算法相比,具有更佳的调度性能——调度成本平衡性. | 李庆华 韩建军 Abbas A Essa 张薇 | 2005 | 软件学报2005,16,1: | 18 |
| 2 | Effect of heat input and filler metals on weld strength of gas tungsten arc welding of AISI 316 weldments显示文摘The present work investigates the effect of filler metals and heat input on weld bead geometry and mechanical properties of alloy316 welded by using GTAW.ER309 L,ER316 L and ERNi Cr Mo-3 filler metals,are applied to study their effect on the weldment.Weld defects are examined using radiographic testing.The mechanical properties of welds are evaluated through uniaxial testing,hardness measuring,and bending test.The mechanical properties and cooling rate decrease with increasing heat input.Tensile strength,yield stress and percentage elongation of weldments using three fillers are determined.Best results are obtained using ERNi Cr Mo-3.Besides,weld nugget area,cooling time and solidification time increases with increasing heat input.Finally,applying bending test on weld samples,cracks,tearing and surface defects are not observed. | Essam Ahmed Ramy Ahmed A EL-Nikhaily A R S Essa | 2020 | China Welding2020,29,1: | 7 |
| 3 | Model combining pre-transplant tumor biomarkers and tumor size shows more utility in predicting hepatocellular carcinoma recurrence and survival than the BALAD models显示文摘AIM To assess the performance of BALAD, BALAD-2 and their component biomarkers in predicting outcome of hepatocellular carcinoma(HCC) patients after liver transplant.METHODS BALAD score and BALAD-2 class are derived from bilirubin, albumin, alpha-fetoprotein(AFP), Lens culinaris agglutinin-reactive AFP(AFP-L3), and des-gammacarboxyprothrombin(DCP). Pre-transplant AFP, AFP-L3 and DCP were measured in 113 patients transplanted for HCC from 2000 to 2008. Hazard ratios(HR) for recurrence and death were calculated. Univariate and multivariate regression analyses were conducted. C-statistics were used to compare biomarker-based to predictive models. RESULTS During a median follow-up of 12.2 years, 38 patients recurred and 87 died. The HRs for recurrence in patients with elevated AFP, AFP-L3, and DCP defined by BALAD cut-off values were 2.42(1.18-5.00), 1.86(0.98-3.52), and 2.83(1.42-5.61), respectively. For BALAD, the HRs for recurrence and death per unit increased score were 1.48(1.15-1.91) and 1.59(1.28-1.97). For BALAD-2, the HRs for recurrence and death per unit increased class were 1.45(1.06-1.98) and 1.38(1.09-1.76). For recurrence prediction, the combination of three biomarkers had the highest c-statistic of 0.66 vs. 0.64, 0.61, 0.53, and 0.53 for BALAD, BALAD-2, Milan, and UCSF, respectively. Similarly, for death prediction, the combination of three biomarkers had the highest c-statistic of 0.66 vs 0.65,0.61, 0.52, and 0.50 for BALAD, BALAD-2, Milan, and UCSF. A new model combining biomarkers with tumor size at the time of transplant(S-LAD) demonstrated the highest predictive capability with c-statistics of 0.71 and 0.69 for recurrence and death. CONCLUSION BALAD and BALAD-2 are valid in transplant HCC patients, but less predictive than the three biomarkers in combination or the three biomarkers in combination with maximal tumor diameter(S-LAD). | Nicha Wongjarupong Gabriela M Negron-Ocasio Roongruedee Chaiteerakij Benyam D Addissie Essa A Mohamed Kristin C Mara William S Harmsen J Paul Theobald Brian E Peters Joseph G Balsanek Melissa M Ward Nasra H Giama Sudhakar K Venkatesh Denise M Harnois Michael R Charlton Hiroyuki Yamada Alicia Algeciras-Schimnich Melissa R Snyder Terry M Therneau Lewis R Roberts | 2018 | World Journal of Gastroenterology2018,24,12: | 5 |
| 4 | Perovskite Solar Cells Yielding Reproducible Photovoltage of 1.20 V显示文摘High photovoltages and power conversion efciencies of perovskite solar cells(PSCs)can be realized by controlling the undesired nonradiative charge carrier recombination.Here,we introduce a judicious amount of guanidinium iodide into mixed-cation and mixed-halide perovskite flms to suppress the parasitic charge carrier recombination,which enabled the fabrication of>20%efcient and operationally stable PSCs yielding reproducible photovoltageas high as 1.20 V.By introducing guanidinium iodide into the perovskite precursor solution,the bandgap of the resulting absorber material changed minimally;however,the nonradiative recombination diminished considerably as revealed by time-resolved photoluminescence and electroluminescence studies.Furthermore,using capacitance-frequency measurements,we were able to correlate the hysteresis features exhibited by the PSCs with interfacial charge accumulation.Tis study opens up a path to realize new record efciencies for PSCs based on guanidinium iodide doped perovskite flms. | Essa A.Alharbi M.Ibrahim Dar Neha Arora Mohammad Hayal Alotaibi Yahya A.Alzhrani Pankaj Yadav Wolfgang Tress Ahmed Alyamani Abdulrahman Albadri Shaik M.Zakeeruddin Michael Grätzel | 2019 | Research2019,,1: | 4 |
| 5 | Nitrogen(N) metabolism related enzyme activities,cell uitrastructure and nutrient contents as affected by N level and barley genotype显示文摘Development of the new crop cultivars with high yield under low nitrogen(N) input is a fundamental approach to enhance agricultural sustainability,which is dependent on the exploitation of the elite germplasm.In the present study,four barley genotypes(two Tibetan wild and two cultivated),differing in N use efficiency(NUE),were characterized for their physiological and biochemical responses to different N levels.Higher N levels significantly increased the contents of other essential nutrients(P,K,Ca,Fe,Cu and Mn),and the increase was more obvious for the N-efficient genotypes(ZD9 and XZ149).The observation of ultrastructure showed that chloroplast structure was severely damaged under low nitrogen,and the two high N efficient genotypes were relatively less affected.The activities of the five N metabolism related enzymes,i.e.,nitrate reductase(NR),glutamine synthetase(GS),nitrite reductase(NiR),glutamate synthase(GOGAT) and glutamate dehydrogenase(GDH) all showed the substantial increase with the increased N level in the culture medium.However the increased extent differed among the four genotypes,with the two N efficient genotypes showing more increase in comparison with the other two genotypes with relative N inefficiency(HXRL and XZ56).The current findings showed that a huge difference exists in low N tolerance among barley genotypes,and improvement of some physiological traits(such as enzymes) could be helpful for increasing N utilization efficiency. | Jawad Munawar Shah Syed Asad Hussain Bukhari ZENG Jian-bin QUAN Xiao-yan Essa Ali Noor Muhammad ZHANG Guo-ping | 2017 | Journal of Integrative Agriculture2017,16,1: | 4 |
| 6 | Prediction of tensile strength of friction stir welded 6061 Al plates显示文摘The present paper investigates the prediction of tensile strength after friction stir welding(FSW)using artificial neural network(ANN)in the MATLAB program.The experimental results are used to develop the mathematical model.The combined influence of welding speed,rotation speed,and axial force on the tensile strength of 6061 Al plates is simulated.Results of the tensile test are used to train and test the ANN model.A multi-layer solution is developed using the ANN model to predict tensile strength.Back propagation(BP)method is initially trained using 80%of the experimental data,then,testing is performed with the rest of the data.Results indicate that predicted values are close to the corresponding measured values. | Farghaly Ahmed A El-Nikhaily Ahmed E Essa A R S | 2019 | China Welding2019,28,3: | 4 |
| 7 | Neuroprotective effects of berry fruits on neurodegenerative diseases显示文摘Recent clinical research has demonstrated that berry fruits can prevent age-related neurodegenerative diseases and improve motor and cognitive functions. The berry fruits are also capable of modulating signaling pathways involved in inflammation, cell survival, neurotransmission and enhancing neuroplasticity. The neuroprotective effects of berry fruits on neurodegenerative diseases are related to phytochemicals such as anthocyanin, caffeic acid, catechin, quercetin, kaempferol and tannin. In this review, we made an attempt to clearly describe the beneficial effects of various types of berries as promising neuroprotective agents. | Selvaraju Subash Musthafa Mohamed Essa Samir Al-Adawi Mushtaq A.Memon Thamilarasan Manivasagam Mohammed Akbar | 2014 | Neural Regeneration Research2014,9,16: | 3 |
| 8 | 茉莉酸对油菜(Brassica napus L.)受镉毒害的缓解作用(英文)显示文摘目的:本研究目的在于了解:(1)喷施外源茉莉酸对受到镉胁迫油菜的作用;(2)是否茉莉酸能够通过增强气体交换,从而保护受到氧化胁迫的地上部分组织的叶绿体,进而通过减少镉的吸收来维持离子平衡;(3)是否通过喷施茉莉酸来对具有减缓镉毒害效应的抗氧化酶的活性进行调节。创新点:茉莉酸能够调节响应胁迫的抗氧化酶的活性,从而通过保护叶绿体免受活性氧(ROS)伤害而提高光合产物的能力,最大限度地缓解油菜植株受到的镉毒害。方法:(1)叶片气体交换;(2)叶片光合色素分析;(3)丙二醛与抗氧化酶活性分析;(4)营养成分分析;(5)透射电镜亚细胞水平观察。结论:茉莉酸对于植物受镉毒害的缓解作用的机理在于减少叶片中镉的积累,从而减轻氧化胁迫过程中产生的ROS对于膜系统的损害程度。 | Essa ALI Nazim HUSSAIN Imran Haider SHAMSI Zahra JABEEN Muzammil Hussain SIDDIQUI Li-xi JIANG | 2018 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2018,19,2: | 2 |
| 9 | 抑郁症的非药物治疗:系统性综述与证据图显示文摘背景抑郁症非药物治疗的疗效比较目前仍然不清楚。方法我们对一些系统性综述作了概述,回顾了随机对照试验(RCT),比较抑郁症非药物治疗的有效性和认知行为治疗(CBT)。对多个电子数据库在2016年2月之前发表的所有文献进行了检索,不限制语言。成对的评阅人进行资料纳入、数据提炼并评估偏倚的风险。在适用的时候进行了荟萃分析。结果我们收录了367项RCT,纳入了约2000名患者,进行了11种治疗,导出17项独立的头对头比较。通过标准化的量表评估,发现CBT、自然疗法、行为干预与躯体活动干预可以降低抑郁的严重程度。然而,这些非药物干预的相对疗效仍然缺乏。这些干预对临床缓解和复发的效果不清楚。CBT的发生率比抗抑郁药物更低。局限性由于证据缺乏一致性、证据不清或偏倚风险高,导致证据的质量只是低到中等,限制了我们研究结果的可信度。结论抑郁症的非药物治疗能减少抑郁症状,在轻度到重度抑郁症患者中,应当合并抗抑郁药物治疗,一同进行。对于非药物治疗的选择,应当根据患者的价值观、偏好、临床和社会因素来与患者共同作出决定。 | Wigdan H Farah Mouaz Alsawas Maria Mainou Fares Alahdab Magdoleen H Farah Ahmed T Ahmed Essa A Mohamed Jehad Almasri Michael R Gionfriddo Ana Castaneda-Guarderas Khaled Mohammed Zhen Wang Noor Asi Craig N Sawchuk Mark D Williams Larry J Prokop M Hassan Murad Annie LeBlanc | 2017 | 英国医学杂志中文版2017,20,11: | 2 |
| 10 | Therapeutic Attenuation of Neuroinflammation and Apoptosis by Black Tea Theaflavin in Chronic MPTP/Probenecid Model of Parkinson’s Disease显示文摘 | Annadurai Anandhan Musthafa Mohamed Essa Thamilarasan Manivasagam | 2013 | Neurotoxicity Research2013,,2: | 2 |
| 11 | Graphcut textures: image and video synthesis using graph cuts 显示文摘 | Kwatra V Schodl A Essa I | 2003 | ACM Transactions on Graphic2003,22,3: | 1 |
| 12 | Graphcut textures: image and video synthesis using graph cuts 显示文摘 | Kwatra V Schodl A Essa I | 2003 | ACM Transactions on Gra- phics2003,22,3: | 1 |
| 13 | Serum Hepcidin;a direct Link between anemia of inflammation and coronary artery atherosclerosis in patients with rheumatoid arthritis显示文摘 | Abdel K M EL-Barbary A M Essa S A | 2011 | J Rheuma- tol2011,38,10: | 1 |
| 14 | A new approach for the recovery of precious metals from solution and from leachates derived from electronic scrap 显示文摘 | Maeaskie L E Creamer N J Essa A M M Brown N L | 2007 | Biotechnology and Bioengineering2007,96,4: | 1 |
| 15 | Maximal thymectomy in children with myasthenia gravis显示文摘 | Essa M E1 Medany Y Hajjar W | 2003 | Eur J Cardlothorac Surg2003,24,2: | 1 |
| 16 | Mercury resistance deter- minants related to Tn21 , Tn1696, and Tn5053 in enterobacteria from the preantibiotic era 显示文摘 | Essa AM Julian DJ Kidd SP | 2003 | Antimicrob Agents Chemother2003,47,3: | 1 |
| 17 | Graphcut Textures:Image and Video Synthesis Using Graph Cuts显示文摘 | V Schodl A Essa I Turk G Bobick A | 2003 | ACM Transactions on Graphics (S0730-0301)2003,22,3: | 1 |
| 18 | Mercury resistance determinants related to Tn21, Tn1696, and Tn5053 in enterobacteria from the preantibiotic era 显示文摘 | Essa AM Julian DJ Kidd SP | 2003 | Antimicrob Agents Chemother2003,47,3: | 1 |
| 19 | Mangiferin attenuates MPTP induced dopaminergic neurodegeneration and improves motor impair- ment,redox balance and Bel-2/Bax expression in experimental Par- kinson' s disease mice 显示文摘 | Kavitha M Nataraj J Essa MM | 2013 | Chem Biol Interact2013,206,2: | 1 |
| 20 | Maximal thymectomy in children with myasthenia gravis显示文摘 | Essa M Medany Y Hajjar W | 2003 | Eur J Cardiothorac Surg2003,24,2: | 1 |