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88篇 您的检索式:作者名="Bennett Peter"
    题名 作者 年代 出处 被引量
1纳秒激光诱导铝板表面超疏水微纳结构显示文摘提出了一种利用纳秒光纤激光快速制备超疏水铝板表面的方法,对样品表面的接触角和粗糙度进行了测量。烘烤处理激光加工后的样品,得到了一系列具有不同润湿性能的铝板表面,增加激光能量密度可得到超疏水表面。研究结果表明,增加激光能量密度除了能提高铝板表面的粗糙度,还会形成明显的微纳二级结构;空气占铝板超疏水复合接触面总面积的90%以上;纳秒激光诱导铝板超疏水表面是微纳结构和化学成分共同作用的结果。杨奇彪 刘少军 汪于涛 汪幸 陈列 郑重 娄德元 陶青 翟中生 Peter Bennett 刘顿 2017激光与光电子学进展2017,54,9:17
2飞秒激光诱导铝基的超疏水表面显示文摘利用不同能量的飞秒激光脉冲对铝基材料表面接触角进行调控,并对其浸润性转变机理进行了分析研究。结果表明,经飞秒激光加工和时效处理后,铝基材料表面最终稳定的浸润性状态与激光能量及时效时间相关。随着激光能量的增大,表面接触角由70°转变为150°以上。对不同能量加工条件下的铝基表面形貌、粗糙度及化学成分进行了分析,结果表明,激光加工后的样品浸润性由亲水状态最终转变为超疏水状态。在不同脉冲能量区间均可得到超疏水表面,但其表面微观结构存在非周期性或周期性结构的差异,疏水性能的形成机理不同。杨奇彪 邓波 汪于涛 肖晨光 汪幸 陈列 郑重 娄德元 陶青 翟中生 Bennett Peter 刘顿 2017激光与光电子学进展2017,54,10:13
3基于空间光调制器的飞秒并行加工方法研究显示文摘针对飞秒激光微加工中能量利用率和加工效率低的问题,提出一种基于空间光调制器的飞秒并行加工方法。在讨论衍射光栅入射角与衍射角关系的基础上,分析了叠加多个衍射光栅产生多光束的原理,运用GS算法对目标多光束进行优化并计算出相应的相位全息图,将该全息图加载到空间光调制器中获得了多光束。采用脉宽100fs、波长800nm的飞秒激光,进行聚焦PMMA样品内部的并行加工实验,观察到PMMA上多点组合的'一'和'工'字型,得到了光束能量均匀的图形。实验结果论证了该方法对于多光束并行加工控制的有效性。胡勇涛 翟中生 吕清花 陈列 娄德元 杨奇彪 Peter Bennett 刘顿 2016应用光学2016,37,2:10
4皮秒激光制备铝基超疏水表面显示文摘使用皮秒激光制备了铝基超疏水表面,研究了激光脉冲数对试样表面形貌及浸润性的影响。随着脉冲数增加,试样表面微观结构由规则的纳米条纹结构逐渐转变为微纳复合结构,表面粗糙度呈现先增大后减小的趋势。当脉冲数为177时,粗糙度R_a达到最大值(3.855μm)。激光加工后,试样表面先是超亲水状态,经过100℃保温24 h处理后转变为疏水甚至超疏水状态。试样表面浸润性的转变是其微观形貌和化学成分共同作用的结果。刘顿 伍义刚 胡勇涛 吴颖 杨奇彪 娄德元 翟中生 陈列 Bennett Peter 2016激光与光电子学进展2016,53,10:9
5不同地域患者罗库溴铵药效学的比较——多中心研究显示文摘目的比较中国、奥地利和美国3个不同地域的当地患者罗库溴铵作用的量效关系和时效关系。方法选择中国大连、美国英格伍德、奥地利格拉茨3个医学中心择期手术患者各18例,异丙酚、芬太尼静脉麻醉诱导后,累积剂量法进行药效学观察,首剂静脉注射罗库溴铵50μg/kg,起效后重复首剂静脉给药6次,再静脉注射罗库溴铵300μg,采用肌机械运动监测仪记录肌肉收缩强度,对数剂量.概率单位绘制剂量-反应曲线。比较3个地域患者罗库溴铵的ED50、ED90和ED95以及Dur25和Dur0.8。结果大连和格拉茨患者罗库溴铵的ED50、ED90和ED95均高于英格伍德患者,格拉茨患者的ED50、ED90和ED95高于大连患者(P<0.05);大连和格拉茨患者的Dur25和Dur0.8均短于英格伍德患者(P<0.05),格拉茨患者的Dur25短于大连患者(P<0.05),但两者Dur0.8的差异无统计学意义(P>0.05)。结论3个地域患者罗库溴铵作用的量效关系和时效关系有明显的差别,临床用量需要考虑地域因素的影响。安刚 肖昭扬 李宝珠 黄磷 魏芳 Ashnaf A. Dahaba Henry Bennett Aryeh Shander Helfried Metzler Peter H. Rehak 2007中华麻醉学杂志2007,27,3:7
6基于空间光调制器的光束偏振态控制方法研究显示文摘偏振态是激光光束的重要性质之一,偏振态的控制在激光加工领域中具有重要作用。提出了利用空间光调制器(SLM)结合1/2波片和1/4波片,实现线偏振、圆偏振、径向偏振和角向偏振4种偏振态的控制方法,并利用琼斯矩阵,从理论上分析了4种偏振态与两种波片快轴与x轴的夹角及加载到SLM中的灰度图像的对应关系。利用检偏器和CCD相机采集了径向偏振和角向偏振的实验图像,结果表明该方法结构简易,能够通过改变波片角度参数和SLM中图像实现4种不同偏振态的控制。翟中生 胡勇涛 吕清花 陈列 娄德元 杨奇彪 Peter Bennett 刘顿 2016激光与光电子学进展2016,53,3:6
7橡胶阻尼材料纳秒激光打孔实验及机理分析显示文摘针对丁腈橡胶阻尼材料的打孔问题,采用波长为1064nm的纳秒激光器进行了相关实验,观察了激光作用下橡胶材料呈现的特殊状态,并着重讨论了不同脉宽条件下,其状态的变化规律。结果表明由于热量的作用以及空气中氧的侵蚀,孔壁处出现了如蜂窝状的烧蚀状态;在热影响区内,橡胶材料中的氧扩散速度升高,橡胶氧化反应加剧,导致该区域内的橡胶发生了氧化变性。当采用脉宽较短的激光进行打孔时,由于瞬时高温所产生的冲击波更强、时间能量密度更高等因素,所得到的孔径、深度都更大;当激光脉冲宽度较长时,激光能量在孔壁附近的累积更严重,其烧蚀的程度较严重。为减轻因烧蚀、老化等造成橡胶性能下降的问题,应尽量选择脉宽较短的激光参数,同时可考虑采用外部冷却、保护气体等手段,尽可能减小打孔时产生的热影响区。陈列 汪军 刘顿 翟中生 杨奇彪 娄德元 Peter Bennett 2015光学学报2015,35,A02:6
8Sphincter of Oddi dysfunction:Psychosocial distress correlates with manometric dyskinesia but not stenosis显示文摘AIM:To compare postcholecystectomy patients with Sphincter of Oddi(SO)dyskinesia and those with normal SO motility to determine the psychosocial distress,gender and objective clinical correlates of dyskinesia,and contrast these findings with comparisons between SO stenosis and normal SO motility.METHODS:Within a cohort of seventy-two consecutive postcholecystectomy patients with suspected SO dysfunction,manometric assessment identified subgroups with SO dyskinesia(n=33),SO stenosis(n=18)and normal SO motility(n=21).Each patient was categorized in terms of Milwaukee Type,sociodemographic status and the severity of stress-coping experiences.RESULTS:Logistic regression revealed that in combination certain psychological,sociodemographic and clinical variables significantly differentiated SO dyskinesia,but not SO stenosis,from normal SO function.Levels of psychosocial stress and of coping with this stress(i.e.anger suppressed more frequently and the use of significantly more psychological coping strategies)were highest among patients with SO dyskinesia,especially women.Higher levels of neuroticism(the tendency to stressproneness)further increased the likelihood of SO dyskinesia.CONCLUSION:A motility disturbance related to psychosocial distress may help to explain the finding of SO dyskinesia in some postcholecystectomy patients.Ethelle Bennett Peter Evans John Dowsett John Kellow 2009World Journal of Gastroenterology2009,15,48:4
9纳秒激光单脉冲对阻尼橡胶材料的损伤特性显示文摘为了研究阻尼橡胶材料与纳秒激光的相互作用,通过单脉冲激光进行刻蚀实验,观察了橡胶材料的损伤情况,分析了其损伤机理。结果表明,短脉冲激光能量作用于阻尼橡胶材料表面时,由于橡胶材料的热传导系数较低,激光能量所产生的热量将极大地集中在光斑区域内。在高温条件下,橡胶材料发生热裂解、老化等现象,所形成的孔洞内呈现出明显的蜂窝状的热烧蚀状态。随着单脉冲能量的增加,孔的深度和直径增大,且孔内的烧蚀状态更加明显。通过测量烧蚀直径和深度,计算了阻尼橡胶材料在13ns激光单脉冲作用下的损伤阈值。利用有限元方法模拟了阻尼橡胶材料的单脉冲损伤过程,利用模拟结果再次计算了材料的单脉冲损伤阈值,与实验结果吻合较好。陈列 王呈祥 汪幸 翟中生 杨奇彪 娄德元 Peter Bennett 刘顿 2016激光与光电子学进展2016,53,8:4
10激光诱导氧化铝陶瓷刀具的表面浸润性显示文摘利用飞秒激光处理陶瓷刀具表面,研究了脉冲能量和光斑重合度对其表面浸润性的影响。通过测定激光处理后的氧化铝陶瓷刀片表面的接触角来观察其浸润性。实验结果表明,飞秒激光可以改变陶瓷材料表面的润湿性能,通过选择合适的激光能量密度和光斑重合度,可以制备出超亲水表面和超亲水基切削液的表面。水基切削液在激光处理过的表面上的润湿速度与接触角呈指数衰减关系。杨奇彪 肖晨光 陈中培 陈列 娄德元 陶青 郑重 翟中生 刘顿 Bennett Peter 2017激光与光电子学进展2017,54,10:4
11The metabolic syndrome in children and adolescents显示文摘Paul Zimmet George Alberti Francine Kaufman Naoko Tajima Martin Silink Silva Arslanian Gary Wong Peter Bennett Jonathan Shaw Sonia Caprio 2007The Lancet2007,,9579:3
12Outcomes and patients' perspectives of transition from paediatric to adult care in inflammatory bowel disease显示文摘AIM: To describe the disease and psychosocialoutcomes of an inflammatory bowel disease(IBD) transition cohort and their perspectives.METHODS: Patients with IBD, aged > 18 years, who had moved from paediatric to adult care within 10 years were identified through IBD databases at three tertiary hospitals. Participants were surveyed regarding demographic and disease specific data and their perspectives on the transition process. Survey response data were compared to contemporaneously recorded information in paediatric service case notes. Data were compared to a similar age cohort who had never received paediatric IBD care and therefore who had not undergone a transition process. RESULTS: There were 81 returned surveys from 46 transition and 35 non-transition patients. No statistically significant differences were found in disease burden, disease outcomes or adult roles and responsibilities between cohorts. Despite a high prevalence of mood disturbance(35%), there was a very low usage(5%) of psychological services in both cohorts. In the transition cohort, knowledge of their transition plan was reported by only 25/46 patients and the majority(54%) felt they were not strongly prepared. A high rate(78%) of discussion about work/study plans was recorded prior to transition, but a near complete absence of discussion regarding sex(8%), and other adult issues was recorded. Both cohorts agreed that their preferred method of future transition practices(of the options offered) was a shared clinic appointment with all key stakeholders. CONCLUSION: Transition did not appear to adversely affect disease or psychosocial outcomes. Current transition care processes could be optimised, with better psychosocial preparation and agreed transition plans.Alice L Bennett David Moore Peter A Bampton Robert V Bryant Jane M Andrews 2016World Journal of Gastroenterology2016,22,8:3
13不同偏振态飞秒激光在PMMA上的成丝现象显示文摘随着飞秒激光技术的不断成熟和聚甲基丙烯酸甲酯(PMMA)的大量应用,对PMMA光学性能的研究逐渐成为研究热点。飞秒激光在透明材料加工过程中会出现成丝现象,分析了自聚焦和丝状物的产生原理。偏振态是激光光束的重要特征之一,利用空间光调制器、1/2波片和1/4波片组合可实现对线偏振光、圆偏振光、径向偏振光和角向偏振光的控制。利用产生的1μJ偏振光在PMMA上刻线,对比分析不同偏振光的成丝长短和成丝起始位置。实验结果表明:线偏振光和圆偏振光的成丝长度较短,其中线偏振光的成丝位置距离入射面最近;径向偏振光和角向偏振光的成丝长度较长,且成丝位置距离入射面最远。翟中生 郭钊 汪于涛 吕清花 陈列 娄德元 杨奇彪 Peter Bennett 刘顿 2017激光与光电子学进展2017,54,12:2
14Smart bridges, smart tunnels: Transforming wireless sensor networks from research prototypes into robust engineering infrastructure显示文摘Frank Stajano Neil Hoult Ian Wassell Peter Bennett Campbell Middleton Kenichi Soga 2010Ad Hoc Networks2010,,8:1
15The long-term effect of lifestyle interventions to prevent diabetes in the China Da Qing Diabetes Prevention Study: a 20-year follow-up study显示文摘Guangwei Li Ping Zhang Jinping Wang Edward W Gregg Wenying Yang Qiuhong Gong Hui Li Hongliang Li Yayun Jiang Yali An Ying Shuai Bo Zhang Jingling Zhang Theodore J Thompson Robert B Gerzoff Gojka Roglic Yinghua Hu Peter H Bennett 20082008 (9626)2008,,9626:1
16Antecedents and sex/gender differences in youth suicidal behavior显示文摘Suicide is the second leading cause of death in youth globally; however, there is uncertainty about how best to intervene. Suicide rates are typically higher in males than females, while the converse is true for suicide attempts. We review this 'gender paradox' in youth, and in particular, the age-dependency of these sex/gender differences and the developmental mechanisms that may explain them. Epidemiologic, genetic,neurodevelopmental and psychopathological research have identified suicidal behaviour risks arising from genetic vulnerabilities and sex/gender differences in early adverse environments, neurodevelopment, mental disorder and their complex interconnections. Further, evolving sex-/gender-defined social expectations and norms have been thought to influence suicide risk. In particular, how youth perceive and cope with threats and losses(including conforming to others' or one's own expectations of sex/gender identity) and adapt to pain(through substance use and helpseeking behaviours). Taken together, considering brain plasticity over the lifespan, these proposed antecedents to youth suicide highlight the importance of interventions that alter early environment(s)(e.g., childhood maltreatment) and/or one's ability to adapt to them. Further, such interventions may have more enduring protective effects, for the individual and for future generations, if implemented in youth.Anne E Rhodes Michael H Boyle Jeffrey A Bridge Mark Sinyor Paul S Links Lil Tonmyr Robin Skinner Jennifer M Bethell Corine Carlisle Sarah Goodday Travis Salway Hottes Amanda Newton Kathryn Bennett Purnima Sundar Amy H Cheung Peter Szatmari 2014World Journal of Psychiatry2014,4,4:1
17The green bottom line- management accounting for environmental improvement and business bonefit显示文摘Martin Bennett & Peter James 1998Management Accounting1998,,11:1
18The Wolff-Parkinson-White syndrome: the cellular substrate for conduction in the accessory atrioventricular pathway 显示文摘Peters NS Rowland E Bennett JG 1994Eur Heart J1994,15,:1
19The metabolic syndrome in children and adolescents显示文摘Paul Zimmet George Alberti Francine Kaufman Naoko Tajima Martin Silink Silva Arslanian Gary Wong Peter Bennett Jonathan Shaw Sonia Caprio 2007The Lancet2007,,9579:1
20Power doppler ultrasound assessment of the relationship between age and ovarian perifollicular blood flow in women undergoing in vitro fertilization treatment显示文摘Michael F. Costello Sanu M. Shrestha Peter Sjoblom Glen McNally Michael J. Bennett Stephen J. Steigrad Graeme J. Hughes 2006Journal of Assisted Reproduction and Genetics (-)2006,,9:1
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