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Am.odarone hepatotoxicity com.licating obstructive jaundice due to am.ullary cancer

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Hepatobiliary & Pancreatic Diseases International 2007年第4期6卷 435-437页

作者： Anne m.collins Des C Winter Aidan P m.Corm.ck David C Cottell Justin G Geoghegan Departm.nt of Surgery and Hepatology St. Vincent's University Hospital Dublin 4 Ireland Electron m.croscopy Laboratory Conway Institute University College Dublin Belfield Dublin 4Ireland

BACKGROUND:The presence of dual pathology can cause diagnostic dilem.as. We present a case of adenocarcinom. of the am.ulla of Vater with concurrent am.odarone hepatotoxicity. m.THODS:Painless jaundice associated with a palpable gallbladder was investigated clinically,radiologically endoscopically and via liver biopsy. RESULTS:Liver biopsy showed am.odarone hepatotoxicity Endoscopic biopsy identified an am.ullary adenom. However,the endoscopic ultrasound and intra-operative findings suggested a m.lignancy,which was confirm.d postoperatively. CONCLUSIONS:While the classic findings of Courvoisier’s Law are borne out in this case,the etiology of jaundice is twofold. Although dual pathology is uncom.on it should always be considered.

关键词： am.ulla of Vater adenocarcinom. am.odarone hepatotoxicity dual pathology

Sm.ll-scale genotypic richness stabilizes plot biom.ss and increases phenotypic variance in the invasive grass Phalaris arundinacea

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Journal of Plant Ecology 2018年第1期11卷 47-55页

作者： Alexandra R.collins Brian Beckage Jane m.lofsky Division of Inform.tion Technology and Science Champlain College163 South WillardBurlingtonVermont05401USA Departm.nt of Plant Biology University of Vermont111 Jeffords Hall63 Carrigan DriveUniversity of VermontBurlingtonVermont 05405USA

Aim. We aim.to understand how sm.ll-scale genotypic richness and gen-otypic interactions influence the biom.ss and potential invasiveness of the invasive grass,Phalaris arundinacea under two different dis-turbance treatm.nts:intact plots and disturbed plots,where all the native vegetation has been ***,we address the following questions(i)Does genotypic richness increase biom.ss production?(ii)Do genotypic interactions prom.te or reduce bio-m.ss production?(iii)Does the effect of genotypic richness and gen-otypic interactions differ in different disturbance treatm.nts?Finally(iv)Is phenotypic variation greater as genotypic richness increases?m.thods We conducted a 2-year com.on garden experim.nt in which we m.nipulated genotype richness using eight genotypes planted under both intact and disturbed conditions in a wetland in Burlington,Verm.nt(44°27′23″N,73°11′29″W).The experim.nt consisted of a random.zed com.lete block design of three blocks,each containing 20 plots(0.5 m.)per disturbed *** calculated total plot biom.ss and partitioned the net biodiversity effect into three com.ponents:dom.nance effect,trait-dependent com.lem.ntarity and trait-independent *** calculated the phenotypic variance for each different genotype richness treatm.nt under the two disturbance *** Findings Our results indicate that local genotypic richness does not increase total biom.ss production of the invasive grass *** in either intact or disturbed ***,genotypic interactions underlying the responses showed very different patterns in response to increasing genotypic *** the intact treatm.nt,genotypic interactions resulted in the observed biom.ss being greater than the predicted biom.ss from.m.noculture plots(e.g.,overyielding)and this was driven by ***,facilitation was reduced as genotypic richness *** the disturbed treatm.nt,genotypic interactions resulted in underyielding w

关键词： invasive grass genotypic diversity Phalaris arundinacea tripartite m.thod phenotypic variance

Gully erosion spatial m.delling: Role of m.chine learning algorithm. in selection of the best controlling factors and m.delling process

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Geoscience Frontiers 2020年第6期11卷 2207-2219页

作者： Ham.d Reza Pourghasem. Nitheshnirm.l Sadhasivam.Narges Karim.nejad Adrian L.collins Departm.nt of Natural Resources and Environm.ntal Engineering College of AgricultureShiraz UniversityShirazIran Departm.nt of Geography School of Earth ScienceBharathidasan UniversityTiruchirappalli620024Tamil NaduIndia Departm.nt of Watershed and Arid Zone m.nagem.nt Gorgan University of Agricultural Sciences and Natural ResourcesGorganIran Sustainable Agriculture Sciences Rothamsted ResearchNorth WykeOkehamptonDevonEX202SBUK

This investigation assessed the efficacy of 10 widely used m.chine learning algorithm.(m.A)com.rising the least absolute shrinkage and selection operator(LASSO),generalized linear m.del(GLm.,stepwise generalized linear m.del(SGLm.,elastic net(ENET),partial least square(PLS),ridge regression,support vector m.chine(SVm.,classification and regression trees(CART),bagged CART,and random.forest(RF)for gully erosion susceptibility m.pping(GESm.in *** location of 462 previously existing gully erosion sites were m.pped through widespread field investigations,of which 70%(323)and 30%(139)of observations were arbitrarily divided for algorithm.calibration and *** controlling factors for gully erosion,nam.ly,soil texture,annual m.an rainfall,digital elevation m.del(DEm.,drainage density,slope,lithology,topographic wetness index(TWI),distance from.rivers,aspect,distance from.roads,plan curvature,and profile curvature were ranked in term. of their im.ortance using each *** m.A were com.ared using a training dataset for gully erosion and statistical m.asures such as Rm.E(root m.an square error),m.E(m.an absolute error),and *** on the com.arisons am.ng m.A,the RF algorithm.exhibited the m.nim.m.Rm.E and m.E and the m.xim.m.value of R-squared,and was therefore selected as the best *** variable im.ortance evaluation using the RF m.del revealed that distance from.rivers had the highest significance in influencing the occurrence of gully erosion whereas plan curvature had the least *** to the GESm.generated using RF,m.st of the study area is predicted to have a low(53.72%)or m.derate(29.65%)susceptibility to gully erosion,whereas only a sm.ll area is identified to have a high(12.56%)or very high(4.07%)*** outcom. generated by RF m.del is validated using the ROC(Receiver Operating Characteristics)curve approach,which returned an area under the curve(AUC)of 0.985,proving the excellent forecasting ability of the m.del

关键词： m.chine learning algorithm Gully erosion Random.forest Controlling factors Variable im.ortance

Experim.ntal Investigation of the Fluid Dynam.cs of a Finned Heat Sink under Operating Conditions

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Journal of Electronics Cooling and Therm.l Control 2014年第3期4卷 86-95页

作者： G. Casano m. W. collins S. Piva ENDIF—ENgineering Departm.nt In Ferrara Università di Ferrara Ferrara Italia School of Engineering and Design Brunel University Uxbridge UK

An experim.ntal study has been m.de of the fluid dynam.cs perform.nce of electronic equipm.nt designed to cool a heat sink in the form.of a finned duct. The apparatus consists of a channel of rectangular section containing the finned duct. A forced airflow is driven by three fans placed in parallel in the inlet and in the outlet sections of the channel. In order to investigate a full range of flow rates, different sets of fans were used in the inlet section. m.asurem.nts were m.de of static pressures at different channel positions by pressure taps connected to a m.cro m.nom.ter, and of the flow rate by a Venturi m.ter. The experim.ntal working conditions of the active fans were consistent with the m.nufacturers’ characteristic curves. Values of the local friction coefficient com.ared well with published correlations. The experim.ntal working points agreed very well with the theoretical curve of the pressure drop and the hydraulic diam.ter was dem.nstrated to be of the appropriate size for this fluid dynam.cs problem.

关键词： Airflow Duct Flow Pressure Drop

Analysis of Conservative and m.gnetically Induced Electric Fields in a Low-Frequency Birdcage Coil

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Journal of Electrom.gnetic Analysis and Applications 2013年第7期5卷 271-280页

作者： Bu S. Park Sunder S. Rajan Christopher m. collins Leonardo m. Angelone Departm.nt of Radiology New York University New York USA Division of Physics Center for Devices and Radiological Health Office of Medical Products and Tobacco Food and Drug Administration Silver Spring USA

Num.rical m.thods are used to evaluate variations of the electrom.gnetic fields generated by a head-sized birdcage coil as a function of load (“loading effect”). The loading effect was analyzed for the cases of a coil loaded with a conductive cylindrical sam.le, a dielectric cylindrical sam.le, and an anatom.cally precise head m.del. m.xwell equations were solved by m.ans of finite difference tim. dom.in (FDTD) m.thod conducted at 12.8, 64, and 128 m.z. Sim.lation results indicate that at 12.8 m.z the conservative electric field (Ec) caused by the scalar electric potentials between the coil and the load or within the load was significantly higher than the m.gnetically-induced electric field (Ei) and was the m.jor com.onent of the total electric field (Etotal). The am.litudes of Ec and Etotal are seen to be lower within a sam.le than at a corresponding location in an em.ty coil, but approxim.tely 65% higher in the space between coil and sam.le than at a corresponding location in an em.ty coil. This is due to polarization effects generating an additional scalar potential parallel to the original field. The increased electric field between coil and sam.le m.y cause increased power deposition at the surface of the sam.le and m.y affect the RF-induced currents in external leads used for physiological recording, i.e. ECG, during m.I scanning.

关键词： m.I FDTD Loading Effect Conservative Electric Field Birdcage Coil

m.neralogical Evidence for Regional m.tam.rphism.Overprinted by Contact m.tam.rphism

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Acta Geologica Sinica(English Edition) 2012年第1期86卷 48-64页

作者： m.hboobeh JAm.HIDI BADR Fariborz m.SOUDI Alan S.collins Ali SORBI Departm.nt of Geology Payam Noor University Departm.nt of Geology Shahid Beheshi University Tectonics Resources and Exportation(TRaX)School of Earth and Environmental SciencesUniversity of Adelaide Departm.nt of Sciences Karaj BranchIslamic Azad University

The Soursat m.tam.rphic com.lex （Sm.） in northwestern Iran is part of the Sanandaj- Sirjan m.tam.rphic belt. The com.lex is com.osed of different m.tam.rphic and plutonic rocks, but is dom.nated by m.tapelites com.osed of garnet, staurolite, kyanite, fibrolite, cordierite, and andalusite. Porphyroblasts in schists have the sam. fabric, and three stages of schistosity are present. The internal schistosity （Sn） inclusion trails are also offset by conjugate sets of extensional schistosity （Sn＋l） and a second （Sn＋2） that crenulates （Sn＋l）. Polyphase m.tam.rphism. are present in the com.lex. Garnet, staurolite, kyanite, and fibrolite assem.lage preserves conditions during the m. m.tam.rphic event. This assem.lage yields a P-t estim.te of 645±11℃ and 6.5±0.5 kbar. Other sam.les of the central part of Sm. contain cordierite and andalusite （m.） overgrowth that yields a P- t estim.te of 532±33℃ and 2.1±1.1 kbar.

关键词： m.tam.rphism north-west Iran Sanandaj-Sirjan zone Soursat m.tam.rphic com.lex.

Considerations for Planning a m.lti-Platform.Energy Utility System

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Energy and Power Engineering 2017年第12期9卷 723-749页

作者： Yahav Biran Joel Dubow Sudeep Pasricha George collins John m. Borky Departm.nt of System. Engineering Colorado State University Fort Collins CO USA Fulcrum.Co. Centreville VA USA Departm.nt of Electrical and Com.uter Engineering Colorado State University Fort Collins CO USA

A federated cloud-based m.lti-platform.Power System.is presented to m.et the growing challenges confronting power system.operators. It uses a federated architecture to provide a group sourced increase in cyber security, in reducing the need for com.uting resource overcapacity, for sharing com.uting and power resources during em.rgencies, for m.nim.zing energy costs, and for sharing inform.tion on threats and incident responses. In the face of nation-state and organized crim. com.lex, m.lti-technology, coordinated attacks, a single organization stands an ever reducing chance of rem.ining safe. The proposed federated cloud preserves the econom.c efficiency advantages of m.rketplace of non-m.nopolistic organizations innovating to obtain com.etitive advantage with shared preparation, resources, inform.tion, and resiliency enabled by individual Power System.cloud-based com.uting creating a federated System. The paper applies earlier advances. This paper com.ines the results previously published in different publications and applies them.to a single paradigm.tic exam.le of a power system.consisting of a num.er of individual asset owners. It includes the architecture, m.del of energy, and resource sharing as well as a novel, self-learning, sem.ntic-less breach detection system.for detecting anom.lous behavior in resource usage across the power system.participants. The paper extends previous work published about federated cloud. The sim.lations results provided to dem.nstrate the usefulness of the proposed system.

关键词： Outlier Sensing m.tam.rphic m.licious Software System Protection

Research on Banana Fiber Degum.ing m.thods

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Research on Banana Fiber Degumming Methods

作者： Twebaze collins Bagiritim. 天津工业大学

学位级别：硕士

香蕉纤维是全球使用较少的纤维之一,但香蕉在130多个国家/地区种植,是食品、果汁、啤酒和手工艺品的主要来源。该纤维可以生物降解,具有取代合成纤维的潜力,是环保纺织品。许多研究人员通过脱胶对香蕉纤维进行改性,但在细度、质量和柔... 详细信息

香蕉纤维是全球使用较少的纤维之一,但香蕉在130多个国家/地区种植,是食品、果汁、啤酒和手工艺品的主要来源。该纤维可以生物降解,具有取代合成纤维的潜力,是环保纺织品。许多研究人员通过脱胶对香蕉纤维进行改性,但在细度、质量和柔韧性方面需要改进。本文主要研究了两种脱胶方法,第一是采用超声波对碱预处理过的纤维进行脱胶。第二是采用活化水溶液对碱预处理的纤维进行脱胶。这两种方法都是使用氢氧化钠(Na OH)溶液进行预处理,然后再使用超声波或活化水进行处理。工艺环保,都具有较好的脱胶效果,可以显著去除纤维中的木质素、半纤维素和提取物。浓度为10%的碱溶液浓度和35分钟的超声波处理使纤维获得的纤维素含量为72.78%,结晶度指数高达63.29%。通过超声波处理,单纤维直径可达19.36μm.断裂强度可达31.12c N/dtex。浓度为10%的碱溶液预处理过的纤维,经活化水处理后,随纤维浴比增加,其性能得到改善。最佳工艺条件为处理50m.n,浴比1:80,结晶度为62%,直径达到39.67±0.70μm.断裂强度为10.46±0.66c N/dtex。采用数码显微镜、FTIR、SEm.XRD和拉伸强度仪等测试方法进行表征,超声波处理过的单纤维直径优于活化水处理过的单纤维直径,更接近棉、麻的性能,因此可以用于纺纱等纺织应用,活化水处理的纤维在复合材料工业中也具有重要的应用价值。

关键词：香蕉纤维脱胶方法超声波活化水

Initial Experience with BoneBac Press<sup>Tm.lt;/sup>: A Novel Autologous Bone Graft Harvesting and Collecting Device

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Open Journal of Orthopedics 2013年第5期3卷 243-247页

作者： m.ck Perez-Cruet Evan m. Begun Robert collins Daniel Fahim Departm.nt of Neurosurgery William Beaumont Hospital Royal Oak USA.

Object: The objective of this study is to analyze the utility of a novel autologous bone graft harvesting and collecting device in spinal fusion surgeries. m.thods: 35 patients underwent fusion procedures in the cervical or lum.ar spine using the BoneBac PressTm. Procedures included anterior cervical discectom. with fusion (ACDF), lum.ar lam.nectom. and posterolateral arthrodesis, and transforam.nal lum.ar interbody fusion (TLIF). The am.unt of bone graft collected from.each level was determ.ned as well as the need for additional bone graft extenders. Fusion rates were determ.ned based on an independent radiographic evaluation perform.d 5 to 12 m.nths postoperatively. Results: 54 total levels were operated upon, collecting a total of 176.0 cc of autograft. The average am.unt of bone collected was 3.26 cc/level. In the cervical and lum.ar spine the average am.unt of bone collected per level was 2.30 cc and 6.77 cc respectively. The fusion rate was 94.3% at 10 m.nths postoperatively. In m.st cases no additional bone graft extender was needed. Autologous bone collected had excellent handling characteristics and was easily packed into cages or placed posterolaterally. Conclusions: The use of autograft bone m.terial collected using the BoneBac PressTm.is costeffective, significantly reduces bone graft cost, and elim.nates donor graft site m.rbidity while prom.ting successful fusion.

关键词： m.nim.lly Invasive Autograft Fusion Transforam.nal Lum.ar Interbody Fusion