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9篇 您的检索式:作者名="D.Jackson"
    题名 作者 年代 出处 被引量
1Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser显示文摘Based on the rate equations describing the erbium-doped fluoride glass(ZBLAN) fibre lasers with different pumping configurations being taken into account,this paper presents theoretical calculations related to the dynamic population density and the operation performance of a high power mid-infrared all-fibre erbium-doped ZBLAN fibre laser.It shows that the ground-state absorption,excited-state absorption and energy-transfer-upconversion processes co-exist and produce a population balance,causing the laser to operate stably at a continuous wave state.A good agreement between the theoretical results and recent experimental measurement is obtained.Furthermore,the laser structure parameters including fibre length,reflectance of output fibre Bragg grating and pumping configurations are quantitatively optimised to achieve the best performance.The results show,as expected,that the slope efficiency of the fibre laser can be improved significantly through optimisation,which then provides an important guide for the design of high-performance mid-infrared erbium-doped ZBLAN fibre lasers.李剑峰 Stuart D.Jackson 2011Chinese Physics B2011,20,3:3
2Differences between industrial andconsumer product managers显示文摘Cummings T D.Jackson L.Ostrom 0,,:1
3High-resolution ultrasonic imaging of the posterior segment显示文摘D.Jackson Coleman Ronald H. Silverman Almira Chabi Mark J. Rondeau K.Kirk Shung Jon Cannata Harvey Lincoff 2004Ophthalmology2004,,7:1
4Leading Approaches to Vascularize Kidney Constructs in Tissue Engineering显示文摘There is an unprecedented need for new treatments for renal failure,as the incidence of this disease is increasing disproportionately to advancements in therapies.Current treatments are limited by the availability of viable organs,for which there is a worldwide lack.These treatment modalities also require a substantial amount of infrastructure,significantly limiting the access to care in most countries.Kidney tissue engineering approaches promise to develop alternative solutions that address many of the inadequacies in current care.Although many advancements have been made—primarily in the past decade—in biofabrication and whole-organ tissue engineering,many challenges remain.One major hindrance to the progress of current tissue engineering approaches is establishing successful vascularization of developed engineered tissue constructs.This review focuses on the recent advancements that address the vascular challenge,including the biofabrication of vasculature,whole-organ engineering through decellularization and recellularization approaches,microscale organogenesis,and vascularization using organoids in the context of kidney tissue engineering.We also highlight the specific challenges that remain in developing successful strategies capable of clinical translation.Diana S.Lim John D.Jackson Anthony Atala James J.Yoo 2022Engineering2022,,12:0
5著名科学家莱昂·诺波夫(Leon Knopoff)逝世显示文摘莱昂·诺波夫(1925-2011),是一位对物理学、地震学和音乐领域做出贡献的国际著名科学家,于2011年1月20日在妻子和3个孩子的陪伴下于家中辞世。莱昂·诺波夫1949年在加州理工学院获得物理学和数学博士学位,翌年开始在洛杉矶加州大学任教。1960年洛杉矶加州大学成立人种音乐学院后不久,他即担任该学院的音乐学家。David D.Jackson Paul M. Davis 毛桐恩 2011世界地震译丛2011,42,2:0
6南加州概率性地震危险性分析显示文摘引言概率性地震危险性分析(PSHA)是一种涉及多学科的工作,它需要诸如区域地震构造学、地震特征和重复性、地震动形成、地震波传播以及局部场地效应的多种知识。这些资料组成概率模型,可提供任一场地的地震动参数的年超越概率。M.Mahdyiar A.Cornell D.Jackson K.Aki 赵军 1996世界地震译丛1996,27,6:0
7VAN方法没有根据显示文摘Varotsos及其合作者(VAN小组)声称,他们成功地预测了希腊的很多地震。但很多作者否定了这些预测,如在《地球物理快讯》(GRL)1996年5月27日出版的专辑和《对VAN方法的检验》D.Jackson Y.Y.Kagan 吴忠良 1999世界地震译丛1999,,3:0
8俯冲带地震的震级极限显示文摘最大地震震级(m_x)是地震危险性和风险分析中的一个关键参数。然而,最近发生的一些大地震表明,大多数现有的估算m_x的方法都存在不足。此外,m_x本身定义也不明确,因为它的意义在很大程度上取决于其使用范围,如果只使用现有的数据而不把它与时间间隔相结合,通常不能将其推断出来。在本研究中,用研究时段内的可能最大地震震级m_p(T)取代m_x。m_p(T)不仅包含震级极限的信息也包含极端事件发生率。使用锥形古登堡—里克特(TGR)分布为环太平洋俯冲带估计了m_p(T)。对两个锥形古登堡—里克特参数,即β值和角震级(mc)的估计是通过最大似然法与构造矩率约束得出的。需要较小地震的发生率来补充锥形古登堡—里克特分布。采用整个地球模型,即m≥5地震发生率的全球高分辨率估计,来估计这些发生率。通过蒙特卡罗模拟计算m_p(T)的不确定性。我们的研究结果表明,多数环太平洋俯冲带可以在250年的时间间隔生成m≥8.5的地震,在500年的时间间隔生成m≥8.8的地震,在10 000年的时间间隔生成m≥9.0的地震。利用基于浊积岩研究的10 000年古地震记录为卡斯凯迪亚俯冲带补充了有限的仪器记录地震数据。我们的结果显示,该地区500年周期预计有m≥8.8地震;1 000年周期预计有m≥9.0地震;超过10 000年的周期预计有m≥9.3地震。Yufang Rong David D.Jackson Harold Magistrale Chris Goldfinger 李晶(译) 吕春来(校) 2017世界地震译丛2017,48,2:0
9Postpartum meloxicam administration alters plasma haptoglobin, polyunsaturated fatty acid, and oxylipid concentrations in postpartum ewes显示文摘Background: Postpartum inflammation is a natural and necessary response;however, a dysfunctional inflammatory response can be detrimental to animal productivity. The objective of this study was to determine the effects of a non-steroidal anti-inflammatory drug(meloxicam) on ewe postpartum inflammatory response, ewe plasma polyunsaturated fatty acid and oxylipid concentrations, and lamb growth.Results: After lambing, 36 Hampshire and Hampshire × Suffolk ewes were sequentially assigned within type of birth to control(n = 17) or meloxicam orally administered on d 1 and 4 of lactation(MEL;90 mg, n = 19). Milk and blood samples were collected on d 1(prior to treatment) and d 4. Milk glucose-6-phosphate was not affected by MEL. Plasma haptoglobin(Hp) concentrations were less for MEL ewes;control ewes with greater d 1 Hp concentrations had elevated Hp on d 4, but this was not the case for MEL-treated ewes. Treatment with MEL increased plasma arachidonic acid concentration by more than 4-fold in ewes rearing singles but decreased concentrations of 9,10-dihydroxyoctadecenoic acid, prostaglandin F2α, 8-iso-prostaglandin E2, and 8,9-dihydroxyeicosatetraenoic acid. Nine oxylipids in plasma had interactions of treatment with d 1 Hp concentration,all of which revealed positive associations between d 1 Hp and d 4 oxylipid concentrations for CON, but neutral or negative relationships for MEL. MEL decreased 13-hydroxyoctadecadienoic acid:13-oxooctadecadienoic acid ratio and tended to increase 9-hydroxyoctadecadienoic acid:9-oxooctadecadienoic acid ratio(both dependent on d 1 values), indicating progressive metabolism of linoleic acid-derived oxylipids occurred by enzymatic oxidation after MEL treatment. Meloxicam reduced oxylipids generated across oxygenation pathways, potentially due to an improved redox state.Conclusions: Postpartum MEL treatment of ewes decreased plasma concentrations of Hp and several oxylipids,with the greatest impact in ewes with biomarkers reflecting a greater inflammatory state before treatment. Antiinflammatory strategies may help resolve excessive postpartum inflammation in some dams.Katie EOlagaray Barry J.Bradford Lorraine M.Sordillo Jeffery C.Gandy Laman K.Mamedova Turner H.Swartz Trey D.Jackson Emma K.Persoon Caitlin S.Shugart Curtis R.Youngs 2020Journal of Animal Science and Biotechnology2020,11,4:0
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