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Water vapor δd dynamics over China derived from SCIAMACHY satellite measurements

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Science China Earth Sciences 2014年第4期57卷 813-823页

作者： LIU ZhongFang Kei YOSHIMURA Casey d.kennedy WANG XinHui PANG ShuoGuang Tianjin Key Laboratory of Water Resource and Environment Tianjin Normal University Atmosphere and Ocean Research Institute University of Tokyo United States department of Agriculture Agricultural Research ServicePasture Systems and Watershed Management Research UnitEast WarehamMA 02538USA

This study investigates water vapor isotopic patterns and controls over China using high-quality water vapor δd data retrieved from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography （SCIAMACHY） observations. The results show that water vapor δd values on both annual and seasonal time-scales broadly exhibit a continental effect, with values largely decreasing northwestward from coastal lowlands to high-elevation mountainous regions. However, region-specific analysis reveals spatially distinct patterns of water vapor dd between seasons. In the monsoon domain （e.g., China south of 35~N）, depletion in d in the summer and fall seasons is closely tied to monsoon moisture sources （the Indian and Pacific oceans） and subsequent amount effect, but higher 8d values in winter and spring are a result of isotopically-enriched conti- nental-sourced moisture proceeded by less rainout. In contrast, farther inland in China （non-monsoon domain）, moisture is de- rived overwhelmingly from the dry continental air masses and local evaporation, and 8d values are largely controlled by the temperature effect, exhibiting a seasonality with isotopically enriched summer and depleted winter/spring. The observation that the spatial pattern of water vapor δd is the opposite to that of precipitation δd in the summer season also suggests that partial evaporation of falling raindrops is a key driver of water vapor isotope in the non-monsoon domain. This study highlights the importance of non-Rayleigh factors in governing water vapor isotope, and provides constraints on precipitation isotope inter- pretation and modern isotope hydrological processes over China.

关键词： water vapor δd moisture sources evapotranspiration droplet evaporation China

Modelling the biological performance of a side-stream membrane bioreactor using ASM1

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Journal of Environmental Sciences 2004年第6期16卷 1020-1023页

作者： TIANKe-jun LIUXin-ai JIANGTao M.d.kennedy J.C.Schippers P.A.Vanrolleghem MinistryofWaterResourcesofPRC Beijing100053China UNESCO-IHEInstituteforWaterEducation POBox30152601DADelftTheNetherlands BIOMATH GhentUniversityCoupureLinks653B-9000GentBelgium

Membrane bioreactors(MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modelling of a side-stream MBR system using Activated Sludge Model No.1(ASM1), and comparing the results with the modelling of traditional activated sludge processes. ASM1 parameters relevant for the long-term biological behaviour in MBR systems were calibrated(i.e. Y H=0.72gCOd/gCOd, Y A=0.25gCOd/gN, b H=0.25 d -1, b A=0.080 d -1 and f P=0.06), and generally agreed with the parameters in traditional activated sludge processes, with the exception that a higher autotrophic biomass decay rate was observed in the MBR. A sensitivity analysis for steady state operation and dO dynamics suggested that the biological performance of the MBR system(the sludge concentration, effluent quality and the dO dynamics) are very sensitive to the parameters(i.e. Y H, Y A, b H, b A, μ maxH and μ maxA), and influent wastewater components(X I, S S, X S, S NH).

关键词： membrane bioreactor modelling parameter estimation

ECMO in major burn patients: feasibility and considerations when multiple modes of mechanical ventilation fail

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Burns & Trauma 2017年第2期5卷 134-139页

作者： Jason d. kennedy Wesley Thayer Reuben Beuno Kelly Kohorst Avinash B. Kumar department of Anesthesiology and Critical Care Vanderbilt University Medical Center 121121st Avenue S Suite 526 Nashville TN 37212 USA department of Plastic Surgery Vanderbilt University Nashville TN USA

Background: We report two cases of acute respiratory distress syndrome in burn patients who were successfully managed with good outcomes with extra corporeal membrane oxygenation (ECMO) after failing multiple conventional modes of ventilation, and review the relevant *** presentation: The two patients were a 39-year-old male and 53-year-old male with modified Baux Scores of 79 and 78, respectively, with no known inhalation injury. After the initial modified Parkland-based fluid resuscitation and partial escharotomy, both patients developed worsening hypoxemia and acute respiratory distress *** hypoxemia continued to worsen on multiple modes of ventilation including volume control, pressure regulated volume control, pressure control, airway pressure release ventilation and volumetric diffusive *** both cases, the PaO2 ≤ 50 mm Hg on a FiO2100% during the trial of mechanical ventilation. The deterioration was rapid (decision was made to trial the patients on ECMO. Veno-Venous ECMO (V-V ECMO) was successfully initiated following cannulation-under transesophgeal echo guidance—with the dual lumen Avalon? (Maquet, NJ, USA) cannula. ECMO support was maintained for 4 and 24 days, respectively. Both patients were successfully weaned off ECMO and were discharged to rehabilitation following their complex hospital ***: Early ECMO for isolated respiratory failure in the setting on maintained hemodynamics resulted in a positive outcome in our two burn patients suffered from acute respiratory distress syndrome.

关键词： ARdS Burns Extra corporeal membrane oxygenation Rescue ventilation Conventional ventilation failure Veno-venous ECMO

Brain idQC fMRI with high BOLd sensitivity but free of macroscopic susceptibility effects:a preliminary study at 3T

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Brain iDQC fMRI with high BOLD sensitivity but free of macro...

第十四届全国波谱学学术会议

作者： kennedy Scott d. department of Radiology and Rochester Center for Brain Imaging RochesterNY 14642USA department of Physics Xiamen UniversityXiamenFujian 361005PR China

＜正＞Intermolecular double-quantum coherence（idQC）MRI utilizes “distant dipolar field （ddF）”,which acts to refocus a fraction of the transverse magnetization during the detection period,thus producing a *** act...

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来源： cnki会议评论

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求解杆系结构自由振动问题的力法

工程力学 2006年第S2期23卷 1-4页

作者：袁驷叶康生王珂 Williams F W kennedy d 清华大学土木工程系北京100084 Cardiff University

杆系结构的静力分析有两类方法——力法和位移法,而自由振动分析却仅有位移法。针对这一缺失,提出杆系结构自由振动的力法分析方法。通过放松某个位移约束并施加相应的动内力来建立力法的基本体系。当动内力的频率等于结构自振频率时被... 详细信息

杆系结构的静力分析有两类方法——力法和位移法,而自由振动分析却仅有位移法。针对这一缺失,提出杆系结构自由振动的力法分析方法。通过放松某个位移约束并施加相应的动内力来建立力法的基本体系。当动内力的频率等于结构自振频率时被放松的约束位移重新得到满足,此时基本体系与原结构等价,由此建立力法的控制方程。该控制方程为频率的非线性方程,对该方程的求解建立了Newton法的迭代格式。数值算例表明该法是一个精确、高效、实用的方法。

关键词：力法自由振动动力刚度杆系结构 Wittrick-Williams算法 Newton法

Antiparasitic Sesquiterpenes from the Cameroonian Spice Scleria striatinux and Preliminary In Vitro and In Silico dMPK Assessment

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Natural Products and Bioprospecting 2017年第3期7卷 235-247页

作者： kennedy d.Nyongbela Fidele Ntie-Kang Thomas R.Hoye Simon M.N.Efange Pharmacochemistry Research Group Department of ChemistryUniversity of BueaP.O.Box 63BueaCameroon department of Chemistry University of Minnesota207 Pleasant StreetSEMinneapolisMNUSA Chemical and Bioactivity Information Centre Department of ChemistryUniversity of BueaP.O.Box 63BueaCameroon

We are grateful for financial support from the International Cooperative Biodiversity Groups(ICBG),a program of the Fogarty International Centre of the National Institutes of Health(NIH),USA through grant(no TW00327)awarded to Professor *** and Medicines for Malaria Venture(MMV),Geneva,*** US Fulbright Council for International Exchange of Scholars(CIES)is acknowledged for grant to kennedy *** to carry-out research at the University of *** wish to thank *** and *** from the Centre for drug Candidate Optimisation(CdCO),Monash University for the dMPK *** Ntie-Kang is currently a Georg Forster fellow of the Alexander von Humboldt Foundation,*** are equally grateful to Schro¨dinger *** the academic license to use the QikProp software.

关键词： Sesquiterpenes Pharmacokinetics drug metabolism Scleria striatinux

Brevipedicelones d and E,Two C-O-C Flavonoid dimmers from the Leaves of Garcinia brevipedicellata and Anti-onchocercal Activity

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Natural Products and Bioprospecting 2019年第1期9卷 61-68页

作者： Mirabel Akongwi Anastasie ETih kennedy d.Nyongbela Moses Samje Raphael T.Ghogomu Bernard Bodo department of Organic Chemistry Faculty of ScienceUniversity of Yaounde 1P.O.Box 812YaoundeCameroon Pharmacochemistry Research Laboratory Department of ChemistryFaculty of ScienceUniversity of BueaP.O.Box 63BueaSouth West RegionCameroon Faculty of Science ANDI Centre of Excellence on Onchocerciasis ResearchUniversity of BueaP.O.Box 63BueaSouth West RegionCameroon Laboratoire de Chimie des Substances Naturelles Muse´um National d’Histoire Naturelle63 Rue Buffon75005 ParisFrance

A novel isoflavone–chromone flavonoid C–O–C dimmer,brevipedicelone d(1),along with one new C–O–C biflavonoid derivative,brevipedicelone E(2),were isolated from the ethyl acetate extract of the leaves of Garcinia brevipedicellata,a medicinal plant used in folk medicine in parts of *** structures were elucidated by extensive spectroscopic techniques,including 1d-and 2d-NMR,MS experiments,as well as comparing their spectral data with those of known ***-onchocercal screening of 1 showed moderate inhibition of adult worm motility of Onchocerca ochengi by 60%at the highest concentration(20 μg/mL)and inhibited motility of both the juvenile worms of *** and Loa loa by 90%at this same concentration.

关键词： Garcinia brevipedicellata Brevipedicelone Anti-onchocercal activity

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频率测量模式在薄板分层损伤探测中的应用

振动．测试与诊断 2015年第3期35卷 535-540,595页

作者：成鑫磊肖光宏 kennedy d 成培江重庆交通大学土木建筑学院重庆400074 卡迪夫大学工程学院后勤工程学院土木工程系重庆401311

分层损伤是复合材料的主要破坏形式之一,该类损伤发展到一定程度时,不仅会导致结构承载力降低,更有可能因结构失效而引起灾难性破坏。针对此问题,基于固有频率易于测量、测量精度高的特点,将正交化后的固有频率变化量应用于含有分层损... 详细信息

分层损伤是复合材料的主要破坏形式之一,该类损伤发展到一定程度时,不仅会导致结构承载力降低,更有可能因结构失效而引起灾难性破坏。针对此问题,基于固有频率易于测量、测量精度高的特点,将正交化后的固有频率变化量应用于含有分层损伤的复合材料薄板结构中,提出了一种新型反向确定结构损伤位置的理论方法。该方法应用于无损检测中,作为结构损伤定量检测的前期工作,在定量无损检测之前,可以一定范围内准确地预测分层损伤的位置,提高检测效率。利用该方法对复合材料薄板分层损伤位置进行了探测,并与试验结果进行了对比分析。结果表明,该方法具有较好的精确性,实施步骤简单、可靠,并具有一定的抗噪性。

关键词：固有频率薄板结构分层损伤位置预测

Towards a deeper Understanding of the Wittrick-Williams Algorithm for Solving Eigenproblems

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Towards a Deeper Understanding of the Wittrick-Williams Algo...