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284篇 您的检索式:作者名="ASHKAN"
    题名 作者 年代 出处 被引量
1Mucosal mast cells are pivotal elements in inflammatory bowel disease that connect the dots:Stress,intestinal hyperpermeability and inflammation显示文摘Mast cells (MC) are pivotal elements in several physiological and immunological functions of the gastro- intestinal (GI) tract. MC translate the stress signals that has been transmitted through brain gut axis into release of proinflammatory mediators that can cause stimulation of nerve endings that could affect afferent nerve terminals and change their perception, affect intestinal motility, increase intestinal hyperpermeability and, in susceptible individuals, modulate the inflammation. Thus, it is not surprising that MC are an important element in the pathogenesis of inflammatory bowel disease and non inflammatory GI disorders such as IBS and mast cell enterocolitis.Ashkan Farhadi Jeremy Z Fields Ali Keshavarzian 2007World Journal of Gastroenterology2007,13,22:15
2Elastic properties of chiral,anti-chiral,and hierarchical honeycombs:A simple energy-based approach显示文摘The effects of two geometric refinement strategies widespread in natural structures, chirality and self-similar hierarchy, on the in-plane elastic response of two-dimensional honeycombs were studied systematically. Simple closed-form expressions were derived for the elastic moduli of several chiral, antichiral, and hierarchical honeycombs with hexagon and square based networks. Finite element analysis was employed to validate the analytical estimates of the elastic moduli. The results were also compared with the numerical and experimental data available in the literature. We found that introducing a hierarchical refinement increases the Young's modulus of hexagon based honeycombs while decreases their shear modulus. For square based honeycombs, hierarchy increases the shear modulus while decreasing their Young's modulus. Introducing chirality was shown to always decrease the Young's modulus and Poisson's ratio of the structure. However, chirality remains the only route to auxeticity. In particular, we found that anti-tetra-chiral structures were capable of simultaneously exhibiting anisotropy, auxeticity,and remarkably low shear modulus as the magnitude of the chirality of the unit cell increases.Davood Mousanezhad Babak Haghpanah Ranajay Ghosh Abdel Magid Hamouda Harold Nayeb-Hashemi Ashkan Vaziri 2016Theoretical & Applied Mechanics Letters2016,6,2:11
3Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorodsAmir Mostafaei Ashkan Zolriasatein 2012Progress in Natural Science:Materials International2012,22,4:10
4Updates in the management of cranial dural arteriovenous fistula显示文摘Dural arteriovenous fistula(dAVF)accounts for approximately 10%of all intracranial vascular malformations.While they can be benign lesions,the presence of retrograde venous drainage and cortical venous reflux makes the natural course of these lesions aggressive high risk of haemorrhage,neurological injury and mortality.Endovascular treatment is often the first line of treatment for dAVF.Both transarterial and transvenous approaches are used to cure dAVF.The selection of treatment approach depends on the angioarchitecture of the dAVF,the location,the direction of venous flow.Surgery and,to a lesser extent,stereotactic radiosurgery are used when endovascular approaches are impossible or unsuccessful.Humain Baharvahdat Yinn Cher Ooi Wi Jin Kim Ashkan Mowla Alexander L Coon Geoffrey P Colby 2020Stroke & Vascular Neurology2020,5,1:10
5微量元素叶面喷施对水稻(Oryza sativa L.)产量及其构成因素的影响显示文摘【目的】基于微量元素在水稻营养和代谢中的重要作用,研究叶面喷施(Fe EDTA 0.1%,Zn EDTA 0.05%,B 0.02%,Cu EDTA 0.05%,and Mn EDTA 0.05%)对水稻品种Shiroodi产量的影响,明确叶面喷施微量元素的最佳次数和时期。【方法】为了准确评估液体肥料(Fe-EDTA 0.1%,Zn-EDTA 0.05%,B 0.02%,Cu-EDTA 0.05%,and Mn-EDTA 0.05%)对水稻品种Shiroodi产量的影响,和喷施微量元素肥料1~7次(T1~T7),第一次喷施在移栽后9天进行,之后每隔7天喷施一次。【结果】喷施微量元素显著增加了植株干重、籽粒产量、千粒重和收获指数,而且试验年份与喷施微量元素处理对籽粒含锌量、叶片叶绿素b含量和千粒重有显著交互作用。T4处理籽粒产量为4257 kg/hm^(2),而T0只有3499 kg/hm^(2),增产幅度约为20%。产量和产量构成因子的提高源于喷施微量元素肥料处理增加了每株分蘖数、穗长和穗粒数。【结论】叶面喷施有效地提高了水稻对微量元素的吸收利用,喷施4次效果最好。Ashkan Daneshtalab Lahijani Amirabbas Mosavi Morteza Moballeghi 2021植物营养与肥料学报2021,27,5:5
6Sulfamic acid as a reusable and green catalyst for efficient and simple synthesis of 2-substituted-2,3-dihydroquinazolin-4(1H)-ones in water or methanol显示文摘A series of 2,3-dihydroquinazolin-4(1H)-ones have been synthesized in good to excellent yields through direct cyclocondensation of anthranilamide and aryl aldehydes or ketones in water or methanol under mild conditions.The reaction was efficiently promoted by 10 mol%sulfamic acid(SA,H2NSO3H) and the catalyst could be recovered easily after the reactions and reused without evident loss of reactivity.Amin Rostami Ashkan Tavakoli 2011Chinese Chemical Letters2011,22,11:4
7Wilson’s disease显示文摘Aftab Ala Ann P Walker Keyoumars Ashkan James S Dooley Michael L Schilsky 2007The Lancet . 2007 (9559)2007,,9559:3
8Evidence that chronic alcohol exposure promotes intestinal oxidative stress, intestinal hyperpermeability and endotoxemia prior to development of alcoholic steatohepatitis in rats显示文摘Ali Keshavarzian Ashkan Farhadi Christopher B. Forsyth Jayanthi Rangan Shriram Jakate Maliha Shaikh Ali Banan Jeremy Z. Fields 2009Journal of Hepatology2009,,3:3
9Laparoscopic vs Open Appendectomy in Obese Patients: Outcomes Using the American College of Surgeons National Surgical Quality Improvement Program Database显示文摘Rodney J. Mason Ashkan Moazzez Jolene R. Moroney Namir Katkhouda 2012Journal of the American College of Surgeons2012,,1:2
10Educational level and age as contributing factors to road traffic accidents显示文摘在 Fars 省的道路交通事故(RTA ) 上的 ObjectiveThis 研究分析数据,其道路在在伊朗的高度危险的之中。它调查涉及 RTA 以便发现能阻止或减少的模式的教育水平和年龄 accidents.MethodsThis 研究使用了数据可视化技术发现模式隐藏。数据在 Fars 省包括了与 RTA 有关的死亡率并且从从 2010 年 3 月 21 日盖住 1 年的一个时期到 2011 年 3 月 21 日的 Fars 法庭的药登记被获得。所有数据用社会科学统计套装软体 11.5 被分析。结果作为象频率(百分比) 那样的描述的索引被报导。Chisquare 测试有关教育水平和年龄被用于数据。不到 0.05 被认为 significant.ResultsIn 的 P 价值提及的时期, 1 831 个人被打死,从谁 un/lowly 教育了人(69.6%) 说明了最高的死亡率。在教育水平和死亡率之间的重要关系被发现(X 2=275.98, P < 0.0001 ) 。另外三是在年龄和死亡率之间的一个重要协会(X 2=371.20, P < 0.0001 ) 。年轻人(在 20 和 29 年之间的年龄) 与另外的年龄 groups.ConclusionThe 相比贡献更高的 RTA 死亡率教育水平和年龄显著地被相关到死亡率。青春和 un/lowly 教育了人承受更多的致命的 RTA。Ashkan Sami Ghasem Moafian Arman Najafi Mohammad Reza Aghabeig Navid Yamin Seyed Taghi Heydari Kamran B Lankarani 2013Chinese Journal of Traumatology2013,16,5:2
11Firefly-inspired algorithm for discrete optimization problems: An application to manufacturing cell formation显示文摘Mohammad Kazem Sayadi Ashkan Hafezalkotob Seyed Gholamreza Jalali Naini 2012Journal of Manufacturing Systems2012,,:2
12Benign central neurocytoma显示文摘Ashkan K Casey AT D'Arrigo C 2009Cancer2009,89,5:1
13Benign central neurocytoma显示文摘Ashkan K Casey AT Arrigo CD 2000Cancer2000,89,:1
14Wilson's disease显示文摘Aftab Ala Ann P Walker Keyoumars Ashkan 2007Lancet2007,369,:1
15Benign central neurocytoma显示文摘Ashkan K Casey AT D'Arrigo C 2000Cancer2000,89,5:1
16Wilson 's disease 显示文摘Ala A Walker AP Ashkan K 2007Lancet2007,369,9559:1
17Heightened responses to stressors in patients with inflame matory bowel disease显示文摘ASHKAN F ALl K LOUIS D 2005Am J Gastroenterol2005,100,8:1
18Pressure ulcer: Prevention, evaluation, and management显示文摘Daniel B Ashkan J 2008Am Fam Physician2008,78,10:1
19Comparison ofpH-dependent sonodisruption of re-assembled casein micelles by 35 and 130 kHz ultrasounds 显示文摘Ashkan Madadlou Mohammad Ebrahimzadeh Mousavi Zahra Emam-Djomeh 2009Journal of Food Engineering2009,95,3:1
20Comparison of p H-dependent sonodisruption of reassembled casein micelles by 35and 130 k Hz ultrasounds显示文摘ASHKAN M MONHAMMAD E M ZAHRA E D 2009Journal of Food Engineering2009,95,3:1
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