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国际脑血管病杂志 2013年第6期21卷 418-424页

作者： Athos Patsalides Ketan R Bulsara Daniel P Hsu Todd Abruzzo Sandm Narayanan Mahesh V Jayaraman Gary Duckwiler richard paul klucznik Michael Kelly Joshua A Hirsch Don Heck Jeffery Stmshine Don Frei Michael J Alexander Huy M Do Philip M Meyers 邱忠明(译) 张君(译) 徐格林(译) From the Department of Neurological Sure'y New York Presbyterian Hospital weill Comell Medical College New York New York USA Department of Neurosurgery Yale University School of Medicine New Haven Connecticut USA Department of Interventional Neuroradiology University Hospitals Case Medical Center Cleveland Ohio USA Department of Neurosurgery University of Cincinnati Cincinnati Ohio USA Departments of Neurosurgmy & Neurology Wayne State University School of Medicine Detroit Michigan USA Departments of Diagaostic Imaging mad Neurosurgery Warren Alpert School of Medicine at Brown University Providence Rhode Island USA Department of Radiological Sciences UCLA Medical Center Los Angeles California USA Department of Nenroradiology Methodist Hospital Houston Texas USA Department of Neurosurgery Royal University Hospital University of Saskatchewan Saskatoon Saskatchewan Canada NeuroEndovascular Program Massachusetts General Hospital Boston Massachusetts USA Department of Radiology Forsyth Medical Center Winston Salem North Carolina USA Department of Radiology University Hospitals Case Medical Center Cleveland Ohio USA Department of Interventional Neuroradiology Radiology Imaging Associates Engiewood Colorado USA Department of Neurosurg:ry Cedars-Sinai Medical Center Los Angeles California USA Department of Radiology and Neurosurgery Stanford University Medical Center Stanford California USA Department of Radiology and Neurological Surgery Columbia University New York New York USA 南京军区南京总医院神经内科 210002

弹簧圈栓塞最初被设计并经美国食品药品监督管理局批准用于治疗显微外科手术夹闭风险高的脑动脉瘤，但目前该方法越来越被认为是颅内动脉瘤的一线治疗方法。动脉瘤血管内治疗技术已有长足进步，新器材的研发使得以前因血管解剖结构复杂... 详细信息

弹簧圈栓塞最初被设计并经美国食品药品监督管理局批准用于治疗显微外科手术夹闭风险高的脑动脉瘤，但目前该方法越来越被认为是颅内动脉瘤的一线治疗方法。动脉瘤血管内治疗技术已有长足进步，新器材的研发使得以前因血管解剖结构复杂而无法填塞的动脉瘤也得以治疗，从而扩大了血管内治疗的适应证。而且，血管内弹簧圈栓塞已成为当前动脉瘤血管内治疗的主流方法；医学文献证明，在特定患者人群中，弹簧圈栓塞的转归优于外科手术夹闭。最近的一份美国心脏协会（AmericanHeartAssociation，AHA）科学声明指出，对于适合治疗的脑动脉瘤，不论是血管内栓塞还是显微外科手术夹闭，均为破裂动脉瘤I级推荐治疗方法和未破裂动脉瘤的11a级推荐治疗方法。在这两组患者中，治疗利大于弊。一个在血管显微神经外科、神经重症监护和介入神经外科方面有着丰富经验的多学科团队最有利于对颅内动脉瘤的处理实施最佳的技术。神经血管联合写作组此前已发表过一份联合声明，提出了有关脑血管介入治疗的培训和认证的推荐意见。

关键词：颅内动脉瘤栓塞治疗未破裂动脉瘤血管内弹簧圈栓塞血管内治疗技术美国食品药品监督管理局外科手术夹闭标准脑动脉瘤

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Dynamics of Potable Well Water Quality in Key Mining Chiefdoms in Kono District, Eastern Sierra Leone

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Open Journal of Applied Sciences 2024年第7期14卷 1927-1943页

作者： richard Tamba Simbo Alhaji Brima Gogra Yahaya Kudus Kawa Juana paul Moiwo Department of Science and Mathematics College of Arts and Sciences William V.S. Tubman University Harper Liberia Port Loko University College Campus Ernest Bai Koroma University of Science and Technology Port Loko Sierra Leone Department of Chemistry School of Basic Sciences Njala University Bo Sierra Leone Department of Agricultural Engineering School of Technology Njala University Bo Sierra Leone

Groundwater is increasingly being used due to its universal availability and generally good quality. However, the risk of contamination of groundwater due to various human activities such as mining is equally increasing across the globe. In this study, the physical parameters of potable well waters in the key mining areas in Nimikoro and Tankoro Chiefdoms in Kono District were analyzed for compliance with drinking water quality standard. To do this, both unpurged and purged well water samples were collected once every month for a period of one year. Some of the well water properties like temperature, Total Dissolved Solids (TDS) and Electrical Conductivity (EC) were measured on site and others determined in the laboratory. The data collected from the laboratory analyses were statistically analyzed in MS Excel, SPSS and ArcGIS environments for quality trends in time-space fabric. The results showed that well water quality in the study area generally fell short of drinking water quality standards of Sierra Leone and WHO. There were high temperature and turbidity during the dry season and then high TDS and EC during the rainy season. Temperature and turbidity also significantly influenced well water quality in the study area, much more than TDS and EC. The implications for drinking water of lower quality than the standard could be huge for the local population and therefore needs the attention of stakeholders in the study area and decision makers in the country.

关键词： Temperature Total Dissolved Solids Turbidity Electrical Conductivity Water Quality

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State of the Art in Alcohol Sensing with 2D Materials

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Nano-Micro Letters 2020年第3期12卷 22-54页

作者： Ramin Boroujerdi Amr Abdelkader richard paul Faculty of Science and Technology Bournemouth UniversityTalbot CampusFern BarrowPoole BH125BBUK Department of Engineering University of CambridgeCambridge CB30FSUK

Since the discovery of graphene,the star among new materials,there has been a surge of attention focused on the monatomic and monomolecular sheets which can be obtained by exfoliation of layered *** materials are known as two-dimensional(2D)materials and offer enormous versatility and *** ultimate single atom,or molecule,thickness of the 2D materials sheets provides the highest surface to weight ratio of all the nanomaterials,which opens the door to the design of more sensitive and reliable chemical *** variety of properties and the possibility of tuning the chemical and surface properties of the 2D materials increase their potential as selective sensors,targeting chemical species that were previously difficult to *** planar structure and the mechanical flexibility of the sheets allow new sensor designs and put 2D materials at the forefront of all the candidates for wearable *** developing sensors for alcohol,the response time is an essential factor for many industrial and forensic applications,particularly when it comes to hand-held ***,we review recent developments in the applications of 2D materials in sensing alcohols along with a study on parameters that affect the sensing *** review also discusses the strategies used to develop the sensor along with their mechanisms of sensing and provides a critique of the current limitations of 2D materials-based alcohol sensors and an outlook for the future research required to overcome the challenges.

关键词： Sensors and biosensors Alcohol probes Electrochemical detectors Ethanol metabolites 2D materials

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Testing a passive tracking index for monitoring the endangered Ethiopian wolf

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Integrative Zoology 2009年第2期4卷 172-178页

作者： paul EVANGELISTA richard ENGEMAN Lucy TALLENTS Natural Resource Ecology Laboratory Colorado State UniversityFort CollinsColoradoUSA National Wildlife Research Center Fort CollinsColoradoUSA Ethiopian Wolf Conservation Programme Wildlife Conservation Research UnitOxford UniversityUK

The endangered Ethiopian wolf is considered the rarest canid in *** species faces many threats and is particularly vulnerable to diseases such as rabies.A simple,low-technology means to monitor populations would greatly facilitate conservation efforts,through early detection of population changes and behavior,and signaling a need for *** tested a passive tracking index methodology,which has been a valuable tool for indexing canids and other species around the *** method uses counts of track intrusions into plots placed in the animals’routes of travel as the basis for calculating an *** for other species,for which the placement of tracking plots on dirt roads has been extremely successful,we found in our first trial that this approach did not adequately intersect the wolves’activity *** low vegetation associated with Afro-alpine habitats offered little benefit for the wolves to travel ***,in our second trial among molerat colonies,a focus of wolf foraging activity,we found plot placement on molerat mounds was efficient for collecting Ethiopian wolf plot intrusions for index *** plot placement method coupled with the passive tracking index calculations might offer resource managers a cost efficient tool that requires minimal equipment to monitor Ethiopian wolf populations on the Sanetti Plateau and other Afro-alpine *** placement on roads in other Ethiopian wolf habitats where cross-country travel is more difficult might still be a viable means to collect track data,but would require further testing.

关键词： endangered species population abundance population monitoring Simien fox Simien jackal.

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Role of Media in Promoting Peace and Conflict Resolution in North Kivu, Democratic Republic of Congo

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Journalism and Mass Communication 2024年第2期14卷 101-111页

作者： Jean-paul Paluku Kamili richard Muhindo Taghembwa Jean-Baptiste Kakule Mbakula Universitéde l’Assomption au Congo(UAC) ButemboRDC

The research examined the role of media in promoting peace and conflict resolution in North Kivu,Democratic Republic of *** security situation in the Democratic Republic of the Congo(DRC),particularly in the eastern region of North Kivu,has been *** study was anchored in social identity *** research methodology employed for this study was qualitative,focusing on the analysis of *** Mateso’s contributions to Radio Okapi’s“Dialogue entre Congolais”program during the period from 2019 to *** research was conducted within the broader context of the persistent war and conflict in the Democratic Republic of Congo,providing valuable insights into the dynamics and challenges of addressing the ongoing insecurity and violence in the *** study found that media,exemplified by Radio Okapi,plays a multifaceted and significant role in promoting peace and conflict resolution in North Kivu,Democratic Republic of Congo(DRC).It serves as a critical source of accurate information,enabling informed decision-making regarding ceasefire agreements,peace talks,and humanitarian *** fosters dialogue and understanding among different stakeholders,contributing to reconciliation ***,it raises awareness about the human cost of the conflict,challenges misinformation,monitors peace agreements,amplifies the concerns of the affected population,and promotes human rights and *** also engages youth,serves as an early warning system,and attracts global attention to the *** is recommended that media organizations in North Kivu continue their efforts to facilitate dialogue and understanding among different stakeholder ***,media should maintain its focus on raising awareness about the human cost of the conflict,ensuring that the suffering of civilians remains in the spotlight and generates international empathy and *** outlets should also continue their role as watchdogs by closely monitoring the im

关键词： media peace building conflict resolution North-Kivu

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Discrete element simulation of cylindrical particles using super-ellipsoids

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Particuology 2019年第5期17卷 55-66页

作者： Yongzhi Zhao Lei Xu paul B. Umbanhowar richard M. Lueptow Institute of Process Equipment College of Energy Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical Engineering Northwestern University Evanston Illinois 60208 USA Department of Chemical and Biological Engineering Northwestern University Evanston. Illinois 60208 USA The Northwestern Institute on Complex Systems (NICO) Northwestern University Evanston Illinois 60208 USA

A discrete element model based on super-ellipsoids was used to simulate cylindrical particle flow. The model can describe a cylindrical particle accurately provided the shape indices of the super-ellipsoids are set to appropriate values. To achieve more rapid calculations, we implemented an "oriented bounding box algorithm"(OBBA) for the initial contact detection of cylindrical particles. Several types of Simulations were performed to validate the super-ellipsoid model and the contact-detection algorithm. First, the effect of shape index of the super-ellipsoids on model accuracy was investigated through three simulations: impact of a cylindrical particle on a flat wall, flow of cylindrical particles in a rotating tumbler, and segregation of cylindrical particles of different length flowing down a bounded heap. The simulation results show that the super-ellipsoids describe cylindrical particles accurately when the shape index that specifies the sharpness of the cylinder edges is sufficiently large. The efficiency of the OBBA is measured by simulations in which a box is filled with cylindrical particles and a tumbler that contains cylindrical particles is rotated. The simulation results show that the OBBA can accelerate the calculations significantly. The effect of particle shape (such as aspect ratio and shape index) on the calculation speed was obtained. The simulation of rod-like particles tended to take more calculation time than that of disk-like particles, and the simulation time increased with an increasing particle-shape index.

关键词： Discrete element method Super-ellipsoid Super-quadric Cylindrical particle Non-spherical particle Granular material

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Transition to cleaner cooking energy in Ghana

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Clean Energy 2022年第1期6卷 193-201页

作者： richard Osei Bofah paul Appiah-Konadu Franklin Nnaemeka Ngwu National Development Planning Commission GhanaNo.13 Switchback RoadP.O.Box CT 633Cantonments.AccraGhana University of Brescia Italy/Lagos Business School Sustainability CenterNigeriaVia Valotti 3/BBresciaItaly Lagos Business School Sustainability Center KM 22Lekki Epe Express WayAjah-LagosNigeria

Progress towards the Sustainable Development Goal 7 and other related goals hinges on increased access to clean energy alternatives for all people irrespective of where they ***,most developing countries including Ghana still rely largely on traditional biomass as the main source of household energy as a result of a myriad of *** the foregoing,the present study uses the Ghana Living Standard Survey 7(GLSS 7)household data and the multinomial logit regression model to analyse the factors that determine the transition to cleaner cooking energy in *** analysis shows that the main determinants of household energy choice in Ghana are education,household dwelling type,household size,employment and income *** education,modern housing,paid employment and higher income increase the adoption of cleaner energy,a higher dependency ratio and employment in the informal sector increase the likelihood of using unclean *** access to education and the adoption of policies to improve housing conditions,employment and incomes are recommended to encourage the adoption of cleaner energy alternatives.

关键词： cleaner cooking energy Ghana households renewable energy Sustainable Development Goals transition Introduction

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LIFE： Costing the Digital Preservation Lifecycle

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现代图书情报技术 2008年第1期 69-74页

作者： paul WHEATLEY paul AYRIS richard DAVIES RORY MCLEOD HELEN SHENTON The British Library Boston Spa Wetherby UK UCL Gower Street London UK The British Library St Pancras London UK

The LIFE project creates a digital lifecycle model based on previous work undertaken on the lifecycle of paper-based *** Archiving, Voluntarity Deposited Electronic Publications (VDEP), and E-Journal are chosen as case study for application and evaluation of the LIFE *** studies show its potential for further use in a numble of roles,such as improving assessment of the financial commitment,more effective planning for preservation activities *** LIFE Mode will be revised and refined in LIFE2 Project.

关键词：数字资源长期保存生命周期成本 LIFE模型方案

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Bulbosum to Go： A Toolbox to Utilize Hordeum vulgarelbulbosum Introgressions for Breeding and Beyond

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Molecular Plant 2015年第10期8卷 1507-1519页

作者： Neele Wendler Martin Mascher Axel Himmelbach paul Johnston richard Pickering Nils Stein Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) CorrensstraSe 3 06466 Seeland (or) Gatersleben Germany New Zealand Institute for Plant and Food Research Limited Private Bag 4704 Christchurch 8140 New Zealand

Hordeum bulbosum L., a wild relative of barley （Hordeum vulgare L.）, has been considered as a valuable source of genetic diversity for barley improvement. Since the 1990s, a considerable number of barley/H, bulbosum introgression lines （IL）s has been generated, with segments introgressed from H. bulbosum harboring a diverse set of desirable traits. However, the efficient utilization of these ILs has been hampered, largely due to the lack of suitable molecular tools for their genetic characterization and highly reduced interspecific recombination frequencies in the region of the introgression. In the present study, we utilized genotyping-by-sequencing for the detailed molecular characterization of 145 ILs. Genotypic information allows the genetic diversity within the set of ILs to be determined and a strategy was outlined to tackle the obstacle of reduced recombination frequencies. Furthermore, we compiled exome capture re-sequencing information of barley and H. bulbosum and designed an integrated barley/ H. bulbosum sequence resource with polymorphism information on interspecific and intraspecific sequence variations of both species. The integrated sequence will be valuable for marker development in barley/H, bulbosum ILs derived from any barley and H. bulbosum donors. This study provides the tools for the widespread utilization of barley/H, bulbosum ILs in applied barley breeding and academic research.

关键词： Hordeum vulgare Hordeum bulbosum introgression line genotyping-by-sequencing (GBS) exomecapture NGS

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Keggin-type H_4PVMo_(11)O_(40)-based catalysts for the isobutane selective oxidation

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Science China Chemistry 2010年第9期53卷 2039-2046页

作者： paul Sébastien SULTAN Manzoor BORDES-richard Elisabeth Université Lille Nord de France ECLilleUnité de Catalyse et de Chimie du Solide(UMR CNRS 8181)Cité Scientifique Université Lille Nord de France ENSCLUnité de Catalyse et de Chimie du Solide(UMR CNRS 8181)Cité Scientifique

Cesium heteropolysalts Cs3PMo12O40 and HCs3PVMo11O40 were synthesized by modifying the preparation conditions in order to get materials with a much higher surface area than the original Keggin-type heteropolyacids(H3PMo12O40 and H4PVMo11O40).These solids were used as carriers for the dispersion of H4PVMo11O40 heteropolyacid by the incipient wetness impregnation *** textural and structural properties of supports and catalysts were examined by scanning electron microscopy,N2 adsorption-desorption isotherms and Raman *** supported catalysts were studied before and after red/ox pretreatments by X-ray photoelectron spectroscopy,which showed that both the surface composition and oxidized to reduced species ratio depend on the used *** catalytic performances of these novel supported catalysts in the selective oxidation of isobutane to methacrylic acid and methacrolein were *** best catalytic properties were obtained when H4PVMo11O40 was supported on *** isobutane conversion and yield of the desired oxygenates increased along the unsupported H4PVMo11O40

关键词： cesium heteropolysalts supports supported H4PVMo11O40 red/ox XPS isobutane selective oxidation Keggin-type heteropolycompounds

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