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π-π堆叠构建钙钛矿光伏高效电荷通道

Science Bulletin 2024年第1期69卷 26-29页

作者：陈春浩胡凡王凯礼陈静滕天禹史怡然夏宇苏圳煌高兴宇 Ilhan Yavuz 王照奎廖良生 Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesJiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Department of Physics Marmara UniversityIstanbul 34722Turkey

Perovskite solar cells(PSCs)have emerged as strong potential candidates for future photovoltaic *** power conversion efficiency(PCE)of PSCs has already surpassed 26%,approaching their theoretical limit[1].The commonly used device structure for PSCs is ITO/SnO_(2)/perovskite/2,2',7,7'-tetrakis-(N,N-di-4-methox yphenylamino)-9,9'-spirobifluorene(spiro-OMetaD)/Au[2].

关键词：钙钛矿 approaching perovskite

贵州省一起产气荚膜梭菌引起食源性疾病暴发事件的调查及病原体溯源

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中国食品卫生杂志 2024年第5期36卷 557-563页

作者：张莉代华简洁黄靖宇蒋家俊周亚娟田继贵朱姝廖春李军李薇薇郭华贵州医科大学公共卫生与健康学院劳动卫生与环境卫生学系贵州贵阳550025 贵州省疾病预防控制中心贵州贵阳550004 国家食品安全风险评估中心北京100022 贵阳市疾病预防控制中心贵州贵阳550000

目的对贵阳市某学校由产气荚膜梭菌引起发的食源性疾病暴发事件开展流行病学调查和病因食品和病原的溯源分析,探讨全基因组测序新技术在食源性疾病暴发溯源中的应用。方法采用现场流行病学分析,采集可疑生物样本,食品样本和外环境样本... 详细信息

目的对贵阳市某学校由产气荚膜梭菌引起发的食源性疾病暴发事件开展流行病学调查和病因食品和病原的溯源分析,探讨全基因组测序新技术在食源性疾病暴发溯源中的应用。方法采用现场流行病学分析,采集可疑生物样本,食品样本和外环境样本进行常规的实验室病原分离及沙门菌、致泻大肠埃希菌、金黄色葡萄球菌、蜡样芽胞杆菌和产气荚膜梭菌的病原鉴定。对分离的病原菌进行毒素基因检测和全基因组测序溯源分析。结果22名病例症状以腹痛(95.45%,21/22)、腹泻(95.45%,21/22)为主;流行曲线为点源暴露模式,潜伏期为6-15 h。在5份肛拭子样本、3份粪便样本和1份留样早餐肉末食品样本中分离出产气荚膜梭菌,且均检出肠毒素cpe基因,所有样本均未检出沙门菌、致泻大肠埃希菌、金黄色葡萄球菌和蜡样芽胞杆菌。其中早餐肉末食品样品中经全基因组测序分析对比发现产气荚膜梭菌为3.5×10^(5) CFU/g,经全基因组测序分析比对发现,来源于早餐肉末食品和肛拭子样本的产气荚膜梭菌,其分子分型为ST139型,菌株均携带cpe毒力基因。结论通过现场调查和溯源分析,判定产气荚膜梭菌污染早餐肉末是导致此次食源性疾病暴发的原因。全基因组测序新技术在食源性疾病暴发中可起到精准溯源作用。

关键词：产气荚膜梭菌食源性疾病暴发事件毒素基因溯源分析食源性致病菌

Higher risk of type 2 diabetes in young women with polycystic ovary syndrome: A 10-year retrospective cohort study

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World Journal of Diabetes 2022年第3期13卷 240-250页

作者： Wan-Ting liao Jing-Yang Huang Ming-Tsung Lee Yu-Cih Yang chun-Chi Wu Institute of Medicine Chung-Shan Medical UniversityTaichung 402Taiwan Chinese Medicine Department Show Chwan Memorial HospitalChanghua 500Taiwan Research Center for Health Data Science Chung Shan Medical University HospitalTaichung 402Taiwan National Center for Geriatrics and Welfare Research National Health Research InstitutesYunlin 632Taiwan Clinical Trial Research Center China Medical University HospitalTaichung 404Taiwan

BACKGROUND Polycystic ovary syndrome(PCOS)is a common disorder in women of reproductive *** the last few decades,research studies have revealed that PCOS is strongly associated with metabolic disorders,including metabolic syndrome,obesity,insulin resistance and *** observation has shown that women with PCOS are expected to have an increased risk of developing type 2 diabetes(T2DM)in the *** To assess the hazard ratio(HR)of T2DM between women with/without *** This population-based,retrospective cohort study evaluated data retrieved from the National Health Insurance Research *** subjects were women with PCOS(n=2545)identified on the basis of diagnosis,testing,or treatment codes,and women without PCOS as controls(n=2545).The HR of T2DM between women with or without PCOS was the main outcome measure *** Our study found that, during a 10-year follow-up period, the overall incidence of T2DM was 6.25per 1000 person-years in the PCOS group compared with 1.49 in the control group. Afteradjustment for potential confounding variables, the overall incidence of T2DM was higher in thePCOS group vs the control group (HR = 5.13, 95%CI: 3.51-7.48, P tance of prompting a more aggressive treatment to preventdiabetes in women diagnosed with PCOS at a young age, and, in contrast, the lessened importanceof this type of intervention in women diagnosed with PCOS at a late reproductive age.

关键词： Polycystic ovary syndrome Diabetes Incidence Hazard ratio Population-based cohort study

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核电厂应急柴油机橡胶膨胀节破裂原因分析

全面腐蚀控制 2024年第7期38卷 99-103,108页

作者：韩传伟张兰岐殷玉龙廖开星付云飞薛春旭苏州热工研究院有限公司江苏苏州215004 中广核核电运营有限公司广东深圳518124

针对核电厂应急柴油机冷却水回路橡胶膨胀节破裂问题,采用宏观与微观检查、成分分析、力学性能测试、化学分析等技术手段,探究了其失效机制。结果表明,该橡胶膨胀节材料选择存在一定问题,内层丁腈橡胶材料在较高温度下的含乙二醇冷却液... 详细信息

针对核电厂应急柴油机冷却水回路橡胶膨胀节破裂问题,采用宏观与微观检查、成分分析、力学性能测试、化学分析等技术手段,探究了其失效机制。结果表明,该橡胶膨胀节材料选择存在一定问题,内层丁腈橡胶材料在较高温度下的含乙二醇冷却液中长期使用,产生了溶胀与渗入问题。乙二醇与钢丝编织层直接接触而出现腐蚀,最终导致橡胶膨胀节在内部压力下发生破裂。

关键词：应急柴油机丁腈橡胶钢丝编织层乙二醇破裂

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青钱柳多糖抑菌活性及作用机制研究

食品安全质量检测学报 2024年第2期15卷 275-284页

作者：卢玉翠王利晶龙仙梅赵立春廖夏云广西中医药大学药学院南宁530021 广西壮瑶药工程技术研究中心南宁530021 广西药食同源资源开发重点实验室南宁530021

目的研究青钱柳多糖(Cyclocarya paliurus polysaccharides,CPP)抑菌活性及作用机制。方法用不同质量浓度CPP处理细菌后,通过最小抑菌浓度(minimum inhibitory concentration,MIC)、抑菌生长曲线分析CPP对细菌的抑菌效果,并从抑制效果... 详细信息

目的研究青钱柳多糖(Cyclocarya paliurus polysaccharides,CPP)抑菌活性及作用机制。方法用不同质量浓度CPP处理细菌后,通过最小抑菌浓度(minimum inhibitory concentration,MIC)、抑菌生长曲线分析CPP对细菌的抑菌效果,并从抑制效果最佳的受试菌菌体电导率、细胞蛋白和核酸含量、还原糖的释放、呼吸链脱氢酶活性、脂质过氧化程度、细胞内三磷酸腺苷(adenosine triphosphate,ATP)含量、细胞外碱性磷酸酶(alkaline phosphatase,AKP)活力的角度来揭示其抑菌机制。结果CPP对金黄色葡萄球菌(Staphylococcus aureus)、大肠杆菌(Escherichia coil)、单增李斯特氏菌(Listeria monocytogenes)和鼠伤寒沙门氏菌(Salmonella typhimurium)有明显的抑制作用,MICs分别为2、4、6、6 mg/mL,对枯草芽孢杆菌(Bacillus subtilis)的抑菌性不明显;对指示菌的电导率、蛋白质和核酸渗漏、还原糖释放、呼吸链脱氢酶活性、细菌脂质过氧化程度、菌体胞内ATP和胞外碱性磷酸酶含量均有影响。结论CPP具有抑菌活性,其抑菌性主要是破坏菌体细胞壁和细胞膜完整性,改变其通透性,使得胞内大小分子物质外泄,抑制细胞的呼吸代谢和引起氧化损失,进而影响细胞的生长代谢或造成细胞死亡,达到抑菌效果。本研究结果为CPP的抑菌机制探究提供一定的基础数据。

关键词：青钱柳多糖细菌抑菌活性抑菌机制

Investigation of PM_(2.5) pollution during COVID-19 pandemic in Guangzhou,China

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Journal of Environmental Sciences 2022年第5期34卷 443-452页

作者： Luyao Wen chun Yang Xiaoliang liao Yanhao Zhang Xuyang Chai Wenjun Gao Shulin Guo Yinglei Bi Suk-Ying Tsang Zhi-Feng Chen Zenghua Qi Zongwei Cai Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyRm 510Engineering Facility Building No.3Guangzhou 510006China State Key Laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong KongChina Guangzhou Meteorological Public Service Center Guangzhou Meteorological ServiceGuangzhou 510006China School of Life Sciences The Chinese University of Hong KongHong KongChina

The COVID-19 pandemic has raised awareness about various environmental issues,includ-ing PM_(2.5) ***,PM_(2.5) pollution during the COVID-19 lockdown was traced and an-alyzed to clarify the sources and factors influencing PM_(2.5) in Guangzhou,with an emphasis on heavy *** lockdown led to large reductions in industrial and traffic emissions,which significantly reduced PM_(2.5) concentrations in ***,the trend of PM_(2.5) concentrations was not consistent with traffic and industrial emissions,as minimum concentrations were observed in the fourth period(3/01-3/31,22.45 μg/m^(3))of the ***,the concentrations of other gaseous pollutants,e.g.,SO_(2),NO_(2) and CO,were corre-lated with industrial and traffic emissions,and the lowest values were noticed in the sec-ond period(1/24-2/0_(3))of the *** correlation analysis revealed that the decreased PM_(2.5) concentrations during COVID-19 can be mainly attributed to decreased in-dustrial and traffic emissions rather than meteorological *** meteorological factors were included in the PM_(2.5) composition and backward trajectory analyses,we found that long-distance transportation and secondary pollution offset the reduction of primary emissions in the second and third stages of the ***,industrial PM_(2.5) emis-sions from western,southern and southeastern Guangzhou play an important role in the formation of heavy pollution *** results not only verify the importance of control-ling traffic and industrial emissions,but also provide targets for further improvements in PM_(2.5) pollution.

关键词： PM_(2.5)pollution COVID-19 pandemic PM_(2.5)composition Meteorological analysis Source appointment

Performances and direct writing of CL-20 based ultraviolet curing explosive ink

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Defence Technology（防务技术） 2022年第1期18卷 140-147页

作者： Sheng Kong Dong-jie liao Yu-meng Jia Chong-wei An chun-yan Li Bao-yun Ye Bi-dong Wu Jing-yu Wang Hao Guo Zhi-wei Hong School of Environment and Safery Engineering North University of China Taivuan Shanxi 030051PR China Shanxi Engineering Technology Research Centre for Ultrafine Powder North University of China Taiyuan Shanxi030051PR China Huayin Norinco Group Test and Measuring Acudemy Co Id714200 ShanxiChina Zhongkexin Engineering Consulting Co Ltd100000 Beijing China

A new type of explosive ink formulation that can be quickly cured was prepared with unsaturated polyester as binder,styrene as active monomer,2,4,6-trimethylbenzoyl-diphenylphosphine oxide as photoinitiator,and hexanitrohexaazaisowurtzitane(CL-20)as the main *** the explosive inkdirect writing technology was used to charge the micro-sized energetic devices,the curing mechanism of the explosive ink was discussed,and the microstructure,safety performance and explosive transfer performance of the explosive ink molded samples were tested and *** indicate that the composite material has a fast curing molding speed,its hardness can reach 2H within 8 *** crystal form of CL-20 in the molded sample is still *** CL-20 based UV-curing explosive ink formulation has good compatibility,its apparent activation energy is increased by about 3.5 kj/*** composite presents a significant reduction in impact sensitivity and its characteristic drop height can reach 39.8 cm,whichis about 3 times higher than the raw *** the line width of charge is 1.0 mm,the critical thickness of the explosion can reach 0.015 mm,and the explosion velocity is 7129 m/s when the charge density is 1.612 g/cm^(3).

关键词： MEMS Tuze CL-20 UV-curing Explosive ink Detonation perfor mance

2016-2019年西宁市极端气温对非意外120急救量影响的时间序列分析

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环境卫生学杂志 2024年第6期14卷 475-481页

作者：廖星豪宁振旭李永红何淑珍马春光吴晶青海大学医学部公共卫生系西宁810007 中国疾病预防控制中心环境与健康相关产品安全所西宁市疾病预防与控制中心公共卫生科

目的探讨西宁市极端气温与非意外120急救量的关联,识别脆弱人群。方法2016—2019年西宁市120急救量数据来源于青海省医疗紧急救援中心、逐日气象资料来源于青海省气象局、大气污染数据来源于西宁市生态环境局。在控制大气污染物浓度、... 详细信息

目的探讨西宁市极端气温与非意外120急救量的关联,识别脆弱人群。方法2016—2019年西宁市120急救量数据来源于青海省医疗紧急救援中心、逐日气象资料来源于青海省气象局、大气污染数据来源于西宁市生态环境局。在控制大气污染物浓度、湿度、星期几效应等混杂因素影响的基础上,采用分布滞后非线性模型拟合日均气温与急救量之间的关系及其滞后效应,并进行性别和年龄别亚组分析。结果2016—2019年期间,青海省医疗紧急救援中心共接诊西宁市非意外120急救量48354人次,日急救量中位数为29人次。极端高温和极端低温均能引起非意外120急救量增加,高温当日出现效应并持续6日,而低温滞后5日后出现效应并持续11日。总人群在极端低温(P 2.5:-10℃)下的最大累积相对危险度(cumulative relative risk,cumRR)(lag0-19 d)为1.49(95%CI:1.09~2.04),极端高温(P 97.5:21℃)下的最大cumRR(lag0-9 d)为1.15(95%CI:1.06~1.25)。不同人群的累积效应值略有差异,女性的累积冷效应高于男性,<65岁人群的累积热效应高于≥65岁人群。结论极端高温和极端低温均能增加西宁市居民非意外急救风险,且存在滞后效应。在极端高温下健康危害效应产生迅速但短暂,在极端低温下健康危害效应产生缓慢但持久。

关键词：极端气温非意外 120急救量时间序列

Correlation between intrinsic dipole moment and pyroelectric coefficient of Fe-Mg tourmaline

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 105-112页

作者： Chang-chun Zhao Li-bing liao Jie Xing School of Science China University of Geosciences School of Materials Science and Technology China University of Geosciences

Single-crystal X-ray diffraction structural data of four Fe-Mg tourmalines with different Fe contents from Xinjiang, Sichuan, and Yunnan Provinces, China, were collected at room temperature and-100oC. The intrinsic dipole moments of polyhedra and the total intrinsic dipole moment of the unit cell were calculated. By comparing the intrinsic electric dipole moments of the X, Y, Z, T, and B site polyhedra, it is found that the T site polyhedron makes the greatest contribution to the total intrinsic dipole moment. The pyroelectric coefficients of four Fe-Mg tourmalines were experimentally determined, and the influence of intrinsic dipole moments on their pyroelectric properties was inves-tigated. The experimental results show that, compared with the case at room temperature, the intrinsic dipole moments change with the total Fe content at-100oC in a completely different way. With the decrease of temperature, the total intrinsic dipole moments of tourmaline de-crease. Over the same temperature interval, the pyroelectric coefficients increase with the increase in intrinsic dipole moment.

关键词： tourmaline pyroelectricity dipole moment polyhedra