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Anaerobic Digestion of Liquid Waste from an AttiékéFactory: From the Experimental Scale to the Semi-Industrial Scale

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Journal of Environmental Protection 2020年第7期11卷 531-539页

作者： Nazo Edith Kpata-Konan Kouamé Martin Kouamé yao francis Kouamé Sylvestre Ahou yaovi Koffi Felix Konan Theophile Gnagne Department of Agroforestry University Jean Lorougnon Guédé Daloa C&ocirc te d’Ivoire Department of Environment University Jean Lorougnon Guédé Daloa C&ocirc te d’Ivoire IMT-Atlantique GEPEA UMR CNRS 6144 Nantes France Laboratory of Biology and Molecular Typing in Microbiology LBTMM UAC Abomey-Calavi Benin Department of Science and Environmental Management Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire

This study focused on the transfer of experimental results of anaerobic digestion of liquid waste from an attiéké (steamed cassava semolina) factory to a 6 m3 pilot digester. The experimental digester and the pilot were powered as follows: Lw + U + C (liquid waste + urine + cow dung). To the results, the experimental digester mesophilic with a progressive elimination of COD. Also, the nitrogen concentrations in the experimental reactor had little removal with alkaline pH. As for the biogas product in this digester, a volume of 3.6 m3 was obtained with a positive flammability test. The transition from the laboratory scale to the semi-industrial scale retains the results of purification and fuel biogas production of the experimental digester.

关键词： Anaerobic Digestion Cassava Liquid Waste Biogas

Co_(3)Mo_(3)N—An efficient multifunctional electrocatalyst

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The Innovation 2021年第2期2卷 40-46页

作者： yao Yuan Samira Adimi Tiju Thomas Jiacheng Wang Haichuan Guo Jian Chen J.Paul Attfield francis J.DiSalvo Minghui Yang Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo315201China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian116023China Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras AdyarChennai 600036Tamil NaduIndia State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Centre for Science at Extreme Conditions and School of Chemistry University of EdinburghEdinburghEH93JZUK Department of Chemistry and Chemical Biology Cornell UniversityNew York14853USA

Efficient catalysts are required for both oxidative and reductive reactions of hydrogen and oxygen in sustainable energy conversion ***,current precious metal-based electrocatalysts do not perform well across the full range of reactions and reported multifunctional catalysts are all complex ***,we show that singlephase porous Co3Mo3N prepared via a facile method is an efficient and reliable electrocatalyst for three essential energy conversion reactions;oxygen evolution reaction(OER),oxygen reduction reaction(ORR),and hydrogen evolution reaction(HER)in alkaline ***3-Mo3N presents outstanding OER,ORR,and HER activity with high durability,comparable with the commercial catalysts RuO2 for OER and Pt/C for ORR and *** practical demonstrations,Co3Mo3N gives high specific capacity(850 mA h gZn^(-1) at 10 mA cm^(-2))as the cathode in a zinc-air battery,and a low potential(1.63 V at 10 mA cm^(-2))used in a water-splitting *** of Co and Mo d-states appear to result in high ORR and HER performance,while the OER properties result from a cobalt oxide-rich activation surface *** findings will inspire further development of bimetallic nitrides as cost-effective and versatile multifunctional catalysts that will enable scalable usage of electrochemical energy devices.

关键词： ternary nitrides multifunctional electrocatalysts rechargeable Zn-air batteries water splitting

Human Immunodeficiency Virus, Syphilis Prevalence and Risk Factors among Migrant Workers in Konongo, Ghana

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Advances in Infectious Diseases 2014年第3期4卷 132-141页

作者： Andrew A. Adjei James Brandful Mark Lurie Margaret Lartey francis Krampa Awewura Kwara Theophilus K. Adiku yao Tettey Richard K. Gyasi Aaron L. Lawson Timothy Flanigan Brown University School of Medicine Rhode Island USA Noguchi Memorial Institute for Medical Research Legon Ghana University of Ghana Medical School College of Health Sciences Accra Ghana

Migrant workers, particularly gold mining workers, have been identified as a group at risk for HIV and sexually transmitted infections (STI). A cross-sectional study was undertaken on the correlates of human immunodeficiency virus (HIV) and syphilis infections in a sample of migrants (Ghanaian citizens [156] and non-Ghanaian citizens [8]) working in a gold mining centres in Konongo, Ghana. The study was conducted between the months of January 2013 to December 2013. Of a total of 600 eligible migrant workers, only 164 (27.33%;males 114, females 50) of the eligible migrants took part in the study. Subjects voluntarily completed a risk-factor questionnaire and provided blood specimen for testing for the presence of antibodies to HIV and Treponema pallidum, the causative agent of syphilis. These data were analyzed using both univariate and multivariate techniques. The median age of the participants was 29.0 years (range 18 - 62 years). Of the 164 migrant workers tested, HIV and syphilis seroprevalence were 6.7% and 3.7% respectively. On multivariate analysis, the independent determinants for HIV infection were being female [odds ratio (OR) 2.94;95% confidence interval (95% CI 0.86 - 10.0);unmarried (OR 10.13;95% CI 1.2 - 81.09);drug use (OR 3.76;95% CI 0.38 - 36.3);and blood transfusion (OR 2.45;95% CI 0.27 - 22.37). Similarly, on multivariate analysis, the independent determinants for syphilis infection were having concurrent sexual partners (OR 2.16;95% CI 0.38 - 12.12);and blood transfusion (OR 5.07;95% CI 0.51 - 50.37). Consistent with similar studies worldwide, our results suggest high prevalence of HIV and syphilis infections among migrant workers who work in gold mining centres in Ghana.

关键词： HIV Seropositivity Syphilis Seropositivity Migrant Workers Gold Mining Centres Risk Factors

大黄黄连泻心汤不同配伍下黄芩苷和汉黄芩苷在大鼠体内的药动学比较研究

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世界科学技术-中医药现代化 2012年第2期14卷 1445-1450页

作者：黄萍高静雯邹佳丽 francis C.P. Law 袁月梅姚美村中山大学药学院广州510006 广州市妇女儿童医疗中心广州510623 Department of Biological Sciences Simon Fraser University BurnabyB.C. Canada VSA 1S6 中山大学药学院广州510006

目的:比较大黄黄连泻心汤不同配伍情况下黄芩有效成分黄芩苷和汉黄芩苷在大鼠血浆中的药动学差异。方法:大鼠灌服以黄芩、大黄黄芩、黄连黄芩、大黄黄连黄芩的不同配伍浸渍提取液,于不同时间点采血,经处理后测定血浆中黄芩苷和汉黄芩苷... 详细信息

目的:比较大黄黄连泻心汤不同配伍情况下黄芩有效成分黄芩苷和汉黄芩苷在大鼠血浆中的药动学差异。方法:大鼠灌服以黄芩、大黄黄芩、黄连黄芩、大黄黄连黄芩的不同配伍浸渍提取液,于不同时间点采血,经处理后测定血浆中黄芩苷和汉黄芩苷的含量,计算在不同配伍情况下的药动学参数并进行比较分析。结果:在大黄黄连泻心汤的不同配伍中,黄芩配伍大黄后,黄芩主要成分原有的药时曲线双峰现象消失,Cmax及AUC均明显下降,消除过程加快;在配伍黄连后,黄芩主要成分的体内过程与单味黄芩相似,只是第2吸收峰有增高的趋势;大黄、黄连和黄芩3味药配伍时,黄芩主要成分的达峰浓度Cmax及AUC均明显下降,消除减慢。结论:在大黄黄连泻心汤的不同配伍中,大黄、黄连的加入使得黄芩中的主要成分黄芩苷和汉黄芩苷的药动学特征发生显著改变,大黄可减少黄芩苷、汉黄芩苷的吸收,加快其消除,而黄连则削弱了大黄的作用。

关键词：大黄黄连泻心汤黄芩苷汉黄芩苷配伍药动学

Numerical predictions of pressure pulses in a francis pump turbine with misaligned guide vanes

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Journal of Hydrodynamics 2014年第2期26卷 250-256页

作者：肖业祥王正伟张瑾罗永要 State Key Laboratory of Hydroscience and Engineering and Deparment of Thermal Engineering Tsinghua University

Previous experimental and numerical analyses of the pressure pulse characteristics in a francis turbine are extended here by using the unsteady Reynolds-averaged Navier-Stokes equations with the shear stress transport （SST） turbulence model to model the unsteady flow within the entire flow passage of a large francis pump turbine with misaligned guide vanes at the rated rotational speed. The S-curve characteristics are analyzed by a combined use of the model test and the steady state simulation with the aligned guide vane firstly. Four misaligned guide vanes with two different openings are chosen to analyze the influence of pressure pulses in the turbine. The characteristics of the dominant unsteady flow frequencies in different parts of the pump turbine for various misaligned guide vane openings are investigated in detail. The predicted hydraulic performance and the pressure fluctuations show that the misaligned guide vanes reduce the relative pressure fluctuation amplitudes in the stationary part of the flow passage, but not the runner blades. The misaligned guide vanes have changed the low frequencies in the entire flow passage with the change of the pulse amplitudes mainly due to changes in the rotor-stator interaction and the low frequency vortex rope flow behavior.

关键词： pump turbine misaligned guide vanes pressure pulsation rotor stator interaction numerical simulation

Lessons learned:Symbiotic autonomous robot ecosystem for nuclear environments

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IET Cyber-Systems and Robotics 2023年第4期5卷 63-86页

作者： Daniel Mitchell Paul Dominick Emor Baniqued Abdul Zahid Andrew West Bahman Nouri Rahmat Abadi Barry Lennox Bin Liu Burak Kizilkaya David Flynn David John francis Erwin Jose Lopez Pulgarin Guodong Zhao Hasan Kivrak Jamie Rowland Douglas Blanche Jennifer David Jingyan Wang Joseph Bolarinwa Kanzhong yao Keir Groves Liyuan Qi Mahmoud A.Shawky Manuel Giuliani Melissa Sandison Olaoluwa Popoola Ognjen Marjanovic Paul Bremner Samuel Thomas Harper Shivoh Nandakumar Simon Watson Subham Agrawal Theodore Lim Thomas Johnson Wasim Ahmad Xiangmin Xu Zhen Meng Zhengyi Jiang James Watt School of Engineering Autonomous Systems and Connectivity DivisionUniversity of GlasgowGlasgowUK Department of Electrical and Electronic Engineering The University of ManchesterManchesterUK Bristol Robotics Laboratory University of the West of EnglandBristolUK Heriot-Watt University EdinburghUK

Nuclear facilities have a regulatory requirement to measure radiation levels within Post Operational Clean Out(POCO)around nuclear facilities each year,resulting in a trend towards robotic deployments to gain an improved understanding during nuclear decommissioning *** UK Nuclear Decommissioning Authority supports the view that human-in-the-loop(HITL)robotic deployments are a solution to improve procedures and reduce risks within radiation characterisation of nuclear *** authors present a novel implementation of a Cyber-Physical System(CPS)deployed in an analogue nuclear environment,comprised of a multi-robot(MR)team coordinated by a HITL operator through a digital twin *** development of the CPS created efficient partnerships across systems including robots,digital systems and *** was presented as a multi-staged mission within an inspection scenario for the hetero-geneous Symbiotic Multi-Robot Fleet(SMuRF).Symbiotic interactions were achieved across the SMuRF where robots utilised automated collaborative governance to work together,where a single robot would face challenges in full characterisation of *** contributions include the demonstration of symbiotic autonomy and query-based learning of an autonomous mission supporting scalable autonomy and autonomy as a *** coordination of the CPS was a success and displayed further challenges and improvements related to future MR fleets.

关键词： cyber-systems field robotics hazardous inspection human robot interaction industrial robotics mobile robots multi-agent systems multi-robot systems robotics service robots

大黄黄连泻心汤不同配伍浸渍剂中主要化学成分变化研究

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世界科学技术-中医药现代化 2009年第2期11卷 263-268页

作者：邹佳丽黄萍袁月梅姚美村 francis C.P.Law 中山大学药学院广东广州510006 Department of Biological Sciences Simon Fraser UniversityBurnabyB．C．Canada V5A 1S6

目的:建立大黄黄连泻心汤浸渍剂中主要化学成分同时测定的HPLC方法,并分析在配伍黄芩前后这些主要化学成分的变化。方法:采用HPLC-UV法,色谱柱为苯基柱(250mm×4.6mm,5μm),柱温为室温,流动相为乙腈-0.5%三乙胺(磷酸调节pH至3.5),梯度洗... 详细信息

目的:建立大黄黄连泻心汤浸渍剂中主要化学成分同时测定的HPLC方法,并分析在配伍黄芩前后这些主要化学成分的变化。方法:采用HPLC-UV法,色谱柱为苯基柱(250mm×4.6mm,5μm),柱温为室温,流动相为乙腈-0.5%三乙胺(磷酸调节pH至3.5),梯度洗脱,流速为1mL/min;紫外检测波长为254nm、270nm,进样量为20μL。结果:本研究建立的HPLC方法准确、可靠,可同时测定大黄黄连泻心汤的主要化学成分;在大黄和黄连配伍黄芩前后浸渍剂中的主要化学成分发生了明显变化,大黄蒽醌类成分明显增加,黄连生物碱中小檗碱含量明显减少。结论:大黄黄连泻心汤的组方中是否配伍有黄芩将对该方主要化学成分含量变化产生明显影响。

关键词：大黄黄连泻心汤浸渍剂配伍 HPLC

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中药冰片在动物体内转化为樟脑的研究

世界科学技术-中医药现代化 2008年第3期10卷 27-36页

作者：姜晓飞邹佳丽袁月梅姚美村 francis C.P.Law 乔延江中山大学药学院广州510080 Department of Biological Sciences Simon Fraser UniversityBurnabyB.C.Canada VSA 1S6 北京中医药大学中药学院北京100106

目的:给小鼠等动物灌服冰片后,对冰片在其体内转化为樟脑的情况进行初步的定性研究。方法:将天然冰片、冰片(合成龙脑)和异龙脑配成混悬液后,给小鼠灌服,30min后处死小鼠,取肝脏和血浆,经过(肝脏匀浆、)萃取、离心等处理后,取上清液注入... 详细信息

目的:给小鼠等动物灌服冰片后,对冰片在其体内转化为樟脑的情况进行初步的定性研究。方法:将天然冰片、冰片(合成龙脑)和异龙脑配成混悬液后,给小鼠灌服,30min后处死小鼠,取肝脏和血浆,经过(肝脏匀浆、)萃取、离心等处理后,取上清液注入GC-MS进行定性分析;给小鼠、大鼠、家兔灌服天然冰片后,在不同时间点取样,经处理后对樟脑进行分析。结果:GC-MS法可很好的分离和定性龙脑、异龙脑和樟脑等成分;小鼠灌服天然冰片、冰片(合成龙脑)和异龙脑后30min,小鼠体内均检测到樟脑色谱峰;灌服天然冰片后在不同动物体内樟脑的含量基本都随着时间的延长而呈一定规律性的变化。结论:冰片(天然冰片、冰片(合成龙脑))和异龙脑在小鼠、大鼠、家兔体内有转化为樟脑的趋势,动物体内的樟脑含量随时间而呈规律性变化。

关键词：天然冰片冰片(合成龙脑) 异龙脑樟脑 GC-MS分析

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混流式水轮机转轮叶片流激振动分析

工程力学 2007年第8期24卷 143-150页

作者：张立翔王文全姚激昆明理工大学工程力学系云南昆明650051

结合小变形弹性理论和不可压缩粘性流体的最大功率耗散原理构造流体-叶片系统的功率泛函,通过广义变分原理建立了混流式水轮机转轮叶片在非定常湍流场中考虑流体-结构相互作用(FSI)的有限元模型,计算叶片在FSI情况下的流激振动。数值计... 详细信息

结合小变形弹性理论和不可压缩粘性流体的最大功率耗散原理构造流体-叶片系统的功率泛函,通过广义变分原理建立了混流式水轮机转轮叶片在非定常湍流场中考虑流体-结构相互作用(FSI)的有限元模型,计算叶片在FSI情况下的流激振动。数值计算采用分离迭代格式,流动用大涡模拟(LES),叶片振动用直接积分法。试验模型以某型水轮机为原型设计制作,在一片叶片的正面和负面上分别装有5只Kulite的压力传感器,在另一片叶片上装有3只微加速度传感器。计算得到的叶片自振频率、频谱曲线以及加速度时程与试验实测结果是吻合的。

关键词：流体机械混流式水轮机水轮机叶片流激振动广义变分原理流固耦合