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Functional Fiber Membranes with Antibacterial Properties for Face Masks

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Advanced Fiber Materials 2023年第4期5卷 1519-1533页

作者： Papada Natsathaporn gordon Herwig Stefanie Altenried Qun Ren René M.Rossi Daniel Crespy Fabian Itel Department of Materials Science and Engineering School of Molecular Science and EngineeringVidyasirimedhi Institute of Science and Technology(VISTEC)Rayong 21210Thailand Laboratory for Biomimetic Membranes and Textiles EmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfeldstrasse 59014 St.GallenSwitzerland Laboratory for Biointerfaces EmpaSwiss Federal Laboratories for Materials Science and TechnologyLerchenfeldstrasse 59014 St.GallenSwitzerland

Reusable face masks are an important alternative for minimizing costs of disposable and surgical face masks during *** complementary to washing,a prolonged lifetime of face masks relies on the incorporation of self-cleaning *** development of self-cleaning face mask materials requires the presence of a durable catalyst to deactivate contaminants and microbes after long-term use without reducing filtration ***,we generate self-cleaning fibers by functionalizing silicone-based(polydimethylsiloxane,PDMS)fibrous membranes with a *** electro-spinning is performed to fabricate fibers with a non-crosslinked silicone core within a supporting shell scaffold,followed by thermal crosslinking and removal of the water-soluble *** zinc oxide nanoparticles(ZnO NPs)are immo-bilized on the PDMS fibers by colloid-electrospinning or post-functionalization *** fibers functionalized with ZnO NPs can degrade a photo-sensitive dye and display antibacterial properties against Gram-positive and Gram-negative bacteria(Escherichia coli and Staphylococcus aureus)due to the generation of reactive oxygen species upon irradiation with UV ***,a single layer of functionalized fibrous membrane shows an air permeability in the range of 80-180 L/m^(2)s and 65%filtration efficiency against fine particulate matter with a diameter less than 1.0µm(PM_(1.0)).

关键词： Polydimethylsiloxane Zinc oxide Face mask Electrospinning Antibacterial

Real-time PCR diagnosis of Schistosoma japonicum in low transmission areas of China

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Infectious Diseases of Poverty 2018年第1期7卷 87-97页

作者： Pei He Catherine A.gordon Gail M.Williams Yuesheng Li Yuanyuan Wang Junjian Hu Darren J.gray Allen G.Ross Donald Harn Donald P.McManus Hunan Institute of Parasitic Diseases YueyangPeople’s Republic of China Molecular Parasitology Laboratory Infectious Diseases DivisionQIMR Berghofer Medical Research InstituteBrisbaneAustralia Discipline of Epidemiology and Biostatistics School of Population HealthUniversity of QueenslandBrisbaneAustralia Research School of Population Health The Australian National UniversityCanberraAustralia Menzies Health Institute Queensland Griffith UniversityGold CoastQLDAustralia University of Georgia College of Veterinary MedicineAthensGAUSA.

Background:Schistosomiasis in the People’s Republic of China(PRC)can be traced back to *** the past 60 years,the Chinese government has made great efforts to control this persistent disease with elimination slated by 2020 through the implementation of a comprehensive control *** strategy aims to reduce the role of bovines and humans as sources of infection as a pre-requisite for elimination through transmission *** goal of elimination will be achievable only by the implementation of a sustainable surveillance and control system,with sensitive diagnosis a key feature so that the true disease burden is not *** used diagnostics lack the necessary sensitivity to accurately determine the prevalence of Schistosoma japonicum infection in areas with low infection *** is of critical importance to find and treat people and to identify animals with low-level infections if the National Control Programme for China is to achieve schistosomiasis ***:We evaluated a real-time polymerase chain reaction(qPCR)assay using 633 human stool samples collected from five villages in Hunan,Anhui,Hubei,and Jiangxi provinces,and 182 bovine(70 cattle and 112 buffalo)stool samples obtained from four villages in Hunan,Anhui,and Jiangxi provinces in the *** stool samples were subjected to the miracidium hatching test(MHT,a diagnostic procedure used in the National Schistosomiasis Control Programme)and the qPCR *** positive by MHT were subjected to either the Kato-Katz technique for humans,or the formalin-ethyl acetate sedimentation-digestion(FEA-SD)procedure for bovines,to determine infection ***:The qPCR assay exhibited a high level of sensitivity in the detection of *** *** both the human and bovine samples,a significantly higher prevalence was determined using the qPCR assay(11.06%humans,24.73%bovines)than with the MHT(0.93%humans,7.69%bovines).The animal contamination

关键词： Schistosomiasis Schistosoma Japonicum China Real-time PCR Miracidium hatching test Kato-Katz FEA-SD Bovine Human

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移动和无线封装解决方案

集成电路应用 2007年第10期24卷 48-51,56页

作者： Phillip Damberg gordon gray Sean P. Moran Veto Solberg Tessera Inc.

移动消费类电子市场继续成为最大和增长最快的半导体市场。2007年，手机在全球市场上出货量有望超过10亿，而在2011年将达到15亿。对移动PC市场以及PDA和智能手机的市场分析，预测这一市场将在未来几年内继续两位数的增长率。这些市场... 详细信息

移动消费类电子市场继续成为最大和增长最快的半导体市场。2007年，手机在全球市场上出货量有望超过10亿，而在2011年将达到15亿。对移动PC市场以及PDA和智能手机的市场分析，预测这一市场将在未来几年内继续两位数的增长率。这些市场正在随着每一代产品而迅速地发生变化，提供越来越多的特性指标和功能，或降低成本。封装解决方案已被开发出来，以达到当前这一代产品所需的集成程度，但业界正面临着继续保持创新步伐的挑战。

关键词：移动封装半导体市场无线智能手机电子市场全球市场市场分析

The control of soil-transmitted helminthiases in the Philippines: the story continues

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Infectious Diseases of Poverty 2021年第3期10卷 98-98页

作者： Mary Lorraine S.Mationg Veronica L.Tallo Gail M.Williams Catherine A.gordon Archie C.A.Clements Donald P.McManus Darren J.gray Department of Global Health Research School of Population HealthThe Australian National UniversityBuilding 62 Mills RdActon ACTCanberra 2601Australia 不详

Background:Soil-transmitted helminth(STH)infections have long been an important public health concern in the *** this review,we describe the current status of STH infections there and highlight the control efforts undertaken to reduce STH *** text:A nationwide STH mass drug administration(MDA)programme was started in 2006 but the overall STH prevalence remains stubbornly high across the Philippines,rangi ng from 24.9%to 97.4%.

关键词： Soil-transmitted helminths Epidemiology Control The Philippines

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法经济学视角下小产权房的成因及治理对策

经济体制改革 2015年第6期 78-83页

作者：黄日生四川大学经济学院

小产权房开发势头迅猛,且因涉及法律、制度、经济等诸多问题而往往陷入治理困境,故对其成因及治理对策的研究具有重要现实意义。本文运用法经济学方法,对小产权房的成因进行了深入分析:住房供应制度不健全为小产权房提供了生存空间,法... 详细信息

小产权房开发势头迅猛,且因涉及法律、制度、经济等诸多问题而往往陷入治理困境,故对其成因及治理对策的研究具有重要现实意义。本文运用法经济学方法,对小产权房的成因进行了深入分析:住房供应制度不健全为小产权房提供了生存空间,法律规制残缺造成其违法成本较低,集体土地产权模糊引发各方的违规逐利,土地收益分配不公诱致灰色土地交易多发,上述因素的共同作用成为小产权房产生并蔓延的主要原因。小产权房暴露了我国住房供应制度、土地产权制度及土地利益分配等方面的诸多缺陷,对它的治理不单单是在法理上予以禁止或合法化的问题,更应在尊重农民土地权益和保障城镇居民住房供应等基础上,进行法律政策的完善及利益分配机制的重构。

关键词：小产权房法经济学土地制度住房供应

固相法制备MgO-La_2O_3纳米晶及表征

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稀土 2007年第5期28卷 115-117页

作者：双喜丽丽照日格图嘎日迪河套大学生化系内蒙古临河015000 内蒙古师范大学化学与环境科学学院内蒙古呼和浩特010022

以硝酸镧、醋酸镁和酒石酸铵为原料,固相反应法合成白色糊状物,糊状物经400℃时燃烧得到灰白色蓬松絮状多孔性前驱物,前驱物在不同温度下煅烧制备了不同粒径的MgO-La2O3纳米晶,考察研究了煅烧温度和酒石酸铵的用量对MgO-La2O3复合纳米... 详细信息

以硝酸镧、醋酸镁和酒石酸铵为原料,固相反应法合成白色糊状物,糊状物经400℃时燃烧得到灰白色蓬松絮状多孔性前驱物,前驱物在不同温度下煅烧制备了不同粒径的MgO-La2O3纳米晶,考察研究了煅烧温度和酒石酸铵的用量对MgO-La2O3复合纳米晶的影响,探讨了酒石酸铵的作用。通过XRD、TEM、SEM等手段对纳米晶结构、尺寸形貌进行了表征,样品为立方晶系和六方晶系混合的MgO-La2O3复合纳米晶。

关键词： MgO-La2O3 纳米晶固相法

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局部方向数字模式算子的改进

光电子．激光 2015年第6期26卷 1179-1185页

作者：朱明旱陈日新湖南文理学院电气与信息工程学院湖南常德415000

局部方向数字(LDN,local directional number)模式算子,用Kirsch边缘模板计算像素点8个方向的边缘响应值,只能从1幅图像中获取64个特征值。为了提高该算子的特征提取能力,提出了16邻域和24邻域两种边缘模板,利用了更多点的灰度信息计算... 详细信息

局部方向数字(LDN,local directional number)模式算子,用Kirsch边缘模板计算像素点8个方向的边缘响应值,只能从1幅图像中获取64个特征值。为了提高该算子的特征提取能力,提出了16邻域和24邻域两种边缘模板,利用了更多点的灰度信息计算边缘响应,可获得像素点更多方向的边缘响应,能从图像中提取出更多的特征值。在ORL人脸库、Yale人脸B库和Cohn-Kanade人脸库上的实验结果表明,边缘模板的改进,极大地提高了LDN模式算子的特征提取能力,采用16邻域和24邻域的边缘模板使平均识别率分别提高了11.5%和13.04%;并且,这种改进还大大增强了算子对光照和噪声变化的鲁棒性。

关键词：局部方向数字(LDN)模式边缘响应人脸识别表情识别

Chronic kidney disease and risks of adverse clinical events in patients with atrial fibrillation

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Journal of Geriatric Cardiology 2021年第11期18卷 867-876页

作者： Si-Tong LI Chao JIANG Liu HE Qi-Fan LI Zuohan DING Jia-Hui WU Rong HU Qiang LV Xu LI Chang-Qi JIA Yan-Fei RUAN Man NING Li FENG Rong BAI ri-Bo TANG Xin DU Jian-Zeng DONG Chang-Sheng MA Department of Cardiology Beijing Anzhen HospitalCapital Medical University and National Clinical Research Center for Cardiovascular DiseasesBeijingChina University of Edinburgh EdinburghUK Heart Health Research Centre BeijingChina

BACKGROUND Chronic kidney disease(CKD)is highly prevalent in patients with atrial fibrillation(AF).However,the asso-ciation between CKD and clinical consequences in AF patients is still under *** We included 19,079 nonvalvular AF patients with available estimated glomerular filtration rate(eGFR)values in the Chinese Atrial Fibrillation Registry from 2011 to *** were classified into no CKD(eGFR≥90 mL/min per 1.73 m2),mild CKD(60≤eGFRrisks of thromboembolism,major bleeding,and cardiovascular mortality were estimated with Fine-gray regression analysis according to CKD *** regression was performed to assess the risk of all-cause mortal-ity associated with *** Over a mean follow-up of 4.1±1.9 years,there were 985 thromboembolic events,414 major bleeding events,956 car-diovascular deaths,and 1,786 all-cause *** multivariate adjustment,CKD was not an independent risk factor of throm-boembolic *** compared to patients with no CKD,those with mild CKD,moderate CKD,and severe CKD had a 45%,47%,and 133%higher risk of major bleeding,*** was a graded increased risk of cardiovascular mortality associated with CKD status compared with no CKD group:adjusted hazard ratio[HR]was 1.34(95%CI:1.07−1.68,P=0.011)for mild CKD group,2.17(95%CI:1.67−2.81,Prisks of major bleeding and mortality,but didn’t seem to be an independent predictor of thromboembolism in AF patients.

关键词： patients mortality clinical

杂质铜离子对电镀镍层组织形貌及耐蚀性的影响

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表面技术 2022年第10期51卷 276-283,343页

作者：夏日辉王春霞田礼熙南昌航空大学材料科学与工程学院南昌330063

目的研究电镀镍液中存在的铜离子杂质对电镀镍层微观组织和耐蚀性能的影响。方法以五水合硫酸铜的形式向电镀镍液中加入不同质量浓度(5、10、30 mg/L)的铜离子杂质,并以初始配制的电镀镍液(0 mg/L Cu^(2+))为空白组对照。选用低电流密度... 详细信息

目的研究电镀镍液中存在的铜离子杂质对电镀镍层微观组织和耐蚀性能的影响。方法以五水合硫酸铜的形式向电镀镍液中加入不同质量浓度(5、10、30 mg/L)的铜离子杂质,并以初始配制的电镀镍液(0 mg/L Cu^(2+))为空白组对照。选用低电流密度(0.5 A/dm^(2))在Q235钢上电镀镍层,并通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱(XPS)和电化学分析技术对电镀镍层的表面微观形貌、晶体织构、表面各元素化学态信息及耐蚀性能进行表征和分析。结果随着电镀镍液中铜离子浓度的增加,镍层的颜色逐渐变灰,外观质量降低。当电镀镍液中铜离子的含量在工业容忍度范围内时(≤10 mg/L),镍层的颜色较为光亮,晶粒尺寸较小且均匀。当铜离子的浓度大于工业容忍度时(>10 mg/L),晶粒开始变得粗大,且尺寸不均匀。镍晶的生长方式并未改变,仍以螺旋位错的方式进行生长。镀液中存在的铜离子改变了镍晶体的结构,主峰的衍射角度向大角度发生偏移,半峰宽逐渐变大,晶面间距减小,同时影响了镍晶体的择优生长取向,晶粒逐渐由(111)和(200)面转为(111)和(220)面生长。XPS测试结果显示,铜离子浓度的增加导致镍的析出效率降低,铜离子在镍层中析出,并以单质铜和氧化铜的形式存在于镍层中。电化学测试结果表明,电镀镍液中存在的铜离子降低了镍层的耐蚀性能。当铜离子的质量浓度从0 mg/L增加至30 mg/L时,镍层在质量分数为3.5%的NaC1溶液中的开路电位(OCP)逐渐降低,自腐蚀电位由−0.487 mV降至−0.547 mV,自腐蚀电流密度由7.8989μA/cm^(2)增加至17.316μA/cm^(2)。电化学阻抗模值和相位角变小,电荷转移电阻(Rct)由1798Ω·cm^(2)减小至851Ω·cm^(2)。结论在瓦特液中,微量铜离子杂质会导致镍结晶粗大,镀层外观灰暗。镍层中的杂质铜原子会引起一定程度的晶格畸变,使晶格常数变小,晶粒生长择优取向发生改变。随着铜离子杂质浓度的增加,电镀镍层在质量分数3.5%的NaCl溶液中的自腐蚀电流密度增大,阻抗值相应地降低,抗腐蚀性能下降。

关键词：铜离子电镀镍表面形貌晶体织构耐蚀性电沉积

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