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Journal of Forensic Science and Medicine 2017年第3期3卷 111-114页

作者： Zhe Zheng Xiandun zhai Zhiyuan Xia Yaonan mo Department of Forensic Medicine Forensic Medicine SchoolHenan University of Science and TechnologyLuoyangHenanChina

Previous research has found that electrical conductivity(EC),an important index to predict meat freshness and shelflife,is very promising for estimating the late postmortem interval(PMI).However,whether it has potential use in the early PMI has not been fully studied *** test this possibility in the present study,EC of three internal organs of rat liver,spleen,and kidney were determined within 24 postmortem hows,and then,EC changes at different PMIs were carefully *** overall results showed that EC of liver and spleen increased significantly with PMI while EC of kidney had minor changes during the same ***,significant linear positive correlations between EC of liver and spleen and PMI were found and the coefficients of their regression functions were R^(2)=0.98 and R^(2)=0.95,*** can be concluded that determination of EC in certain internal organs such as liver and spleen may be a potential tool in the early PMI ***,more researches on its influencing factors are needed to facilitate its final use in practice.

关键词： Early postmortem interval electrical conductivity forensic science kidney liver spleen

Determination of Electrical Conductivity of Cadaver Skeletal Muscle: A Promising Method for the Estimation of Late Postmortem Interval

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Journal of Forensic Science and Medicine 2015年第1期1卷 16-20页

作者： Zhiyuan Xia Xiandun zhai Beibei Liu Yaonan mo Department of Forensic Medicine Forensic Medicine InstituteHenan University of Science and TechnologyHenanChina

The electrical conductivity(EC)of extracted muscle fluid has been extensively used to evaluate meat freshness and shelf life in the field of food sanitation for *** opposite of freshness is the corruption that increases with *** on the freshness/corruption principle,we investigated the relationship between long postmortem intervals(PMIs)and EC in cadaver skeletal *** values of extracted fluid from rat muscles were measured at different PMIs for 10 *** results indicate that there was a significant correlation between PMI and EC,and the data fit well to the cubic polynomial regression equation y=‑0.01x3+0.264x2‑13.657x+1769.148(R2=0.925).In addition,the EC of different dilutions of these muscle extracts showed strict quadratic correlation(R2=1)with the dilution ratios,suggesting that EC can be measured with very small quantities of muscle *** study suggests that determination of the EC of cadaver skeletal muscle extracts may be a useful method for estimating long PMIs.

关键词： Electrical conductivity forensic science muscle extraction liquid muscle fluid extract postmortem interval estimation

An Amorphous Anode for Proton Battery

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Nano-Micro Letters 2023年第2期15卷 182-197页

作者： Huan Liu Xiang Cai Xiaojuan Zhi Shuanlong Di Boyin zhai Hongguan Li Shulan Wang Li Li Department of Chemistry College of ScienceNortheastern UniversityShenyang 110819LiaoningPeople’s Republic of China School of Light Industry and Chemical Engineering Dalian Polytechnic UniversityDalian 116034LiaoningPeople’s Republic of China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningPeople’s Republic of China School of Metallurgy Northeastern UniversityShenyang 110819People’s Republic of China

Developing advanced electrode materials is crucial for improving the electrochemical performances of proton ***,the anodes are primarily crystalline materials which suffer from inferior cyclic stability and high electrode ***,we propose amorphous electrode materials for proton batteries by using a general ion-exchange protocol to introduce multivalent metal cations for activating the host *** Al^(3+)as an example,theoretical and experimental analysis demonstrates electrostatic interaction between metal cations and lattice oxygen,which is the primary barrier for direct introduction of the multivalent cations,is effectively weakened through ion exchange between Al^(3+)and pre-intercalated K+.The as-prepared Al-moOx anode therefore delivered a remarkable capacity and outstanding cycling stability that outperforms most of the state-of-the-art *** assembled full cell also achieved a high voltage of 1.37 *** work opens up new opportunities for developing high-performance electrodes of proton batteries by introducing amorphous materials.

关键词： Proton batteries Amorphous electrode Multivalent cations Remarkable cycling stability High voltage

海南省综合医院医务人员对幽门螺杆菌感染诊疗的认知现状调查

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中华消化杂志 2024年第4期44卷 223-233页

作者：周慧陈国宁郭阳谭琰蓝程吴冬寒马占良程芃莫翠毅王明黎培员林崖杨永强韩钧凌陈斋林昌领吴朝娜陈盛雄陈正义黄晓曦中南大学湘雅医学院附属海口医院(海口市人民医院)消化内科海口570208 定安县中医院老年病科定安571200 陵水黎族自治县人民医院消化内科陵水572400 海南医学院第一附属医院消化内科海口570102 海南省人民医院消化内科海口570311 三亚市人民医院消化内科三亚572000 澄迈县人民医院消化内科澄迈571900 海南西部中心医院上海交通大学医学院附属第九人民医院西部分院消化内科詹州571799 琼海市人民医院消化内科琼海571400 华中科技大学同济医学院附属同济医院消化内科武汉430030 文昌市人民医院消化内科文昌571300 万宁市人民医院消化内科万宁571500 解放军联勤保障部队第九二八医院消化内科海口570206 东方市人民医院消化内科东方572600 昌江黎族自治县人民医院消化内科昌江572700 乐东黎族自治县人民医院消化内科乐东572500 琼中黎族苗族自治县人民医院消化内科琼中572900 上海交通大学医学院附属第九人民医院消化内科上海200003

目的了解海南省综合医院医务人员对《第六次全国幽门螺杆菌感染处理共识报告(非根除治疗部分)》(以下简称国六共识)和《2022中国幽门螺杆菌感染治疗指南》(以下简称指南)的认知与应用现状。方法2023年2月20日至5月7日对海南省15家综合... 详细信息

目的了解海南省综合医院医务人员对《第六次全国幽门螺杆菌感染处理共识报告(非根除治疗部分)》(以下简称国六共识)和《2022中国幽门螺杆菌感染治疗指南》(以下简称指南)的认知与应用现状。方法2023年2月20日至5月7日对海南省15家综合医院共1463名医务人员进行幽门螺杆菌(***)感染诊疗相关的问卷调查。调查问卷结合国六共识与指南拟定,包括对***及***相关性疾病的认知,对***检测的认知,以及对***根除、预防方法、根除影响因素的认知等6大版块。统计学方法采用卡方检验。结果共回收有效问卷1463份,问卷有效率为100.00%。1463名调查对象包括225名消化内科医师与1238名其他岗位医务人员(包括503名其他内科医师,264名外科医师,471名医技药学医务人员)。78.67%(177/225)的消化内科医师认为我国***总体感染率>20%,认知率高于其他岗位医务人员[其他内科65.41%(329/503)、外科61.74%(163/264)、医技药学60.30%(284/471),以下数据均以此岗位排序],差异有统计学意义(χ^(2)=30.97,P<0.001)。51.11%(115/225)的消化内科医师认为***血清学抗体检测不可以作为现症感染的诊断方法,认知率高于其他岗位医务人员[22.07%(111/503)、14.02%(37/264)、12.31%(58/471)],差异有统计学意义(χ^(2)=152.66,P<0.001)。关于质子泵抑制剂和钾离子竞争性酸阻滞剂在尿素呼气试验前应停用2周、抗菌药物和铋剂应停用4周,消化内科医师的认知率均高于其他岗位医务人员[38.67%(87/225)比23.26%(117/503)、19.70%(52/264)、18.47%(87/471),60.89%(137/225)比26.64%(134/503)、25.76%(68/264)、23.78%(112/471)],差异均有统计学意义(χ^(2)=133.70、165.51,均P<0.001)。对于难治性***感染,98.67%(222/225)的消化内科医师认同进行细菌培养和抗菌药物药敏试验或耐药基因检测指导下的***感染个体化诊治,认知率高于其他岗位医务人员[91.85%(462/503)、93.56%(247/264)、93.21%(439/471)],差异有统计学意义(χ^(2)=20.55,P=0.002)。70.67%(159/225)的消化内科医师推荐铋剂四联方案,80.44%(181/225)支持10~14 d的***根除疗程,认知率均高于其他岗位医务人员[46.92%(236/503)、33.33%(88/264)、32.91%(155/471),67.20%(338/503)、59.09%(156/264)、53.93%(254/471)],差异均有统计学意义(χ^(2)=111.25、59.99,均P<0.001)。消化内科医师对国六共识的了解率为85.33%(192/225),高于其他岗位医务人员[64.21%(323/503)、66.67%(176/264)、57.96%(273/471)],差异有统计学意义(χ^(2)=85.47,P<0.001)。结论海南省综合医院消化内科医师比其他岗位医务人员更了解国六共识和指南,但对内容的深入掌握仍欠缺,需要进一步加强医务人员对国六共识和指南的学习和应用。

关键词：螺杆菌幽门认知共识调查和问卷医师海南

Research on Formation Mechanism and Forecast Method of Windows of Accumulated and Deeply Buried Shale Gas

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 233-234页

作者： BAO Yunjie zhai Changbo DENG mo LV Junxiang Wuxi Research Institute of Petroleum Geology SINOPEC

1 Background The shale at the bottom of Wufeng-Longmaxi Formation is one of the major strata in exploration and exploitation of shales in southeast Sichuan. In the tectonic strong modified regions in the edge and outer places of the basin of southeast Sichuan, the Wufeng-Longmaxi Formation Shale lies in the favorable sedimentary facies of Deep Water-Shallow Water Shelf （Chen Zemin et al, 2013）, developing shale of rock facies with high silicon and high carbon which help the enrichment of shale gas and obtaining the material base for the shale gas to be accumulated into buried treasure.

关键词： SHALE gas GASES -- Absorption & adsorption ISOTHERMAL processes FORECASTING PREDICTION theory OIL fields

不同空气质量下河南主要城市冬季PM_(2.5)中重金属污染特征、来源解析及健康风险评价

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环境化学 2024年第1期43卷 275-286页

作者：雷淼马嘉晖杨璐平翟凯璐李甜宁许可可陈纯郭丽刘丹闫旭河南师范大学环境学院黄淮水环境与污染防治教育部重点实验室河南省环境污染控制重点实验室新乡453007 河南省生态环境监测中心郑州450046

为研究不同大气污染水平条件下河南区域PM_(2.5)及其载带金属的浓度特征、来源和健康风险,于2020年12月在河南7个主要城市(郑州市、洛阳市、信阳市、安阳市、新乡市、商丘市、许昌市)采集PM_(2.5)样品,测定并分析了元素Cu、Zn、Pb、Se... 详细信息

为研究不同大气污染水平条件下河南区域PM_(2.5)及其载带金属的浓度特征、来源和健康风险,于2020年12月在河南7个主要城市(郑州市、洛阳市、信阳市、安阳市、新乡市、商丘市、许昌市)采集PM_(2.5)样品,测定并分析了元素Cu、Zn、Pb、Se、Mn、Fe、As、mo、Ni、Cd、Al.结果表明,PM_(2.5)中的重金属浓度峰值集中在轻度和中度污染空气质量条件,平均浓度顺序Zn>Fe>Al>Mn>Pb>Cu>As>Se>mo>Cd>***和Fe平均质量浓度分别为118.92 ng·m^(-3)和52.88 ng·m^(-3),两者之和占重金属总浓度的65.88%.重金属富集因子变化趋势与浓度变化趋势相同,Cd元素的富集因子最高(>10),表明主要受人为活动影响.重金属元素的主要污染源为燃烧源和交通源.健康风险评估显示,所有空气质量条件下均为成年男性的致癌风险最大,儿童的非致癌风险最大.空气质量条件为优时,mo对暴露于环境中1 h的成年男性和成年女性具有潜在致癌风险.

关键词：大气污染空气质量重金属来源解析人体健康风险

Difference Analysis of Accumulated Degree-Day Samples in Different Regions of China

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Journal of Forensic Science and Medicine 2021年第3期7卷 75-81页

作者： Weihao Zhu Xiandun zhai Mengzi Yang Maosheng Qian Zhenhui Zhang Yaonan mo Department of Forensic Pathology and Forensic Clinical Medicine School of Forensic MedicineHenan University of Science and TechnologyLuoyangChina

Background:Accumulated degree-days(ADD)refers to the temperature value and time within a certain *** and more attention has been paid to the ADD in the study of postmortem interval(PMI)*** and Objective:This study is to confirm whether ADD is applicable in *** and Methods:We collected meteorological data of 10 different regions in China for 12 months,analyzed the distribution characteristics of ADD in different regions at different time periods,and tested the two ADD calculation methods(accumulated hourly temperature and accumulated daily average temperature),in an attempt to establish a more precise calculation method of ***:The results show that when the yearly or monthly effective temperature data is taken as the research object,the law of daily ADD mean value gradually decreases from south to north,and the average value of accumulated hourly temperature at each region is larger than the average value of accumulated daily average temperature(the difference was significant).In addition,in different periods of each day,ADD obtained at different regions is different,and the variation of its specific gravity also has a north-south *** take the daily average temperature as the independent variable and accumulated hourly temperature as the linear equation fitted by the dependent variable,showing a good linear relationship(0.992

关键词： Accumulated degree-day China distribution characteristics postmortem interval

Simultaneously metastatic cholangiocarcinoma and small intestine cancer from breast cancer misdiagnosed as primary cholangiocarcinoma:A case report

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World Journal of Clinical Cases 2023年第18期11卷 4446-4453页

作者： Xin Jiao Mi-Mi zhai Fang-Zhou Xing Xiao-Ling Wang Department of Gastrointestinal Surgery Affiliated Hospital of Weifang Medical UniversityWeifang 261041Shandong ProvinceChina Department of Digestive System Weifang People’s HospitalWeifang 261041Shandong ProvinceChina

BACKGROUND Cholangiocarcinoma and small intestine cancer are common clinical malignancies,but metastatic cholangiocarcinoma and small intestine cancer are rare,especially simultaneous metastatic cholangiocarcinoma and small intestine cancer from breast *** the clinical presentation of metastatic cholangiocarcinoma and small intestine cancer does not differ from primary tumor,it may lead to misdiagnosis *** SUMMARY A 66-year-old woman was admitted to our hospital for further treatment due to abdominal pain and *** magnetic resonance imaging and magnetic resonance cholangiopancreatography showed an occupying lesion of the bile duct,considering a high possibility of primary bile duct ***,we performed a radical bile duct cancer surgery and cholecystectomy,and multiple tumors in the small intestine were found and removed during the surgery *** pathology showed metastatic bile duct cancer and small intestine cancer from tumors in other *** patient underwent a right total mastectomy and axillary lymph node dissection because of right breast cancer 2 years *** with the immunohistochemical results,the patient was finally diagnosed as metastatic cholangiocarcinoma and metastatic small intestine cancer from breast ***,the patient received four cycles of chemotherapy and targeted therapy with docetaxel,capecitabine and ***,the patient eventually died from tumor progression,thoracoabdominal infection,and sepsis 5 mo after *** Simultaneous metastatic cholangiocarcinoma and small intestine cancer from breast cancer are rare and the prognosis is extremely *** preoperative diagnostic accuracy is beneficial to avoid excessive surgical *** should be aimed at relieving biliary obstruction and abdominal pain,and then supplemented with chemotherapy and targeted therapy to control tumor progression and prolong the patient’

关键词： Breast cancer Metastatic cholangiocarcinoma Metastatic small intestine cancer Misdiagnosis Prognosis Case report

SAS-60在制备聚苯胺/炭黑导电复合粒子中的应用

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沈阳化工大学学报 2011年第4期25卷 335-337,358页

作者：李航亢萍赵立群许茜杨志健翟墨沈阳化工大学材料科学与工程学院辽宁沈阳110142 东北大学材料与冶金学院辽宁沈阳110004

采用原位聚合方法,在苯胺的盐酸环境中,加入炭黑和仲烷基磺酸钠SAS-60,以过硫酸铵为氧化剂,制备聚苯胺/炭黑导电复合粒子,并对其进行电导率测试、红外光谱分析及XRD分析.结果表明:在制备聚苯胺/炭黑导电复合粒子的体系中引入SAS-60,所... 详细信息

采用原位聚合方法,在苯胺的盐酸环境中,加入炭黑和仲烷基磺酸钠SAS-60,以过硫酸铵为氧化剂,制备聚苯胺/炭黑导电复合粒子,并对其进行电导率测试、红外光谱分析及XRD分析.结果表明:在制备聚苯胺/炭黑导电复合粒子的体系中引入SAS-60,所得导电复合粒子的电导率比不加SAS-60时要高;当苯胺与SAS-60的摩尔比为4∶1时,导电复合粒子的电导率最大,为51.4 S/cm.红外及XRD分析说明导电复合粒子中引入SAS-60可使电导率提高,同时使PANI的结晶能力增强.

关键词： SAS-60 聚苯胺炭黑导电复合粒子电导率

核苷碱基修饰抑制RNA免疫原性成就新型冠状病毒mRNA疫苗

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生理学报 2023年第5期75卷 605-610页

作者：翟甜甜刘默芳雷海新大连医科大学肿瘤干细胞研究院中国科学院分子细胞科学卓越创新中心/生物化学与细胞生物学研究所

1RNA研究领域多项成果曾获诺贝尔奖项近日揭晓的2023年诺贝尔生理学/医学奖颁发给了出生于匈牙利的美国生物学家Katalin Karikó和美国生物学家Drew Weissman，以表彰他们关于核苷碱基修饰的突破性发现，从而为开发高效新型冠状病毒mRN... 详细信息

1RNA研究领域多项成果曾获诺贝尔奖项近日揭晓的2023年诺贝尔生理学/医学奖颁发给了出生于匈牙利的美国生物学家Katalin Karikó和美国生物学家Drew Weissman，以表彰他们关于核苷碱基修饰的突破性发现，从而为开发高效新型冠状病毒mRNA疫苗奠定了坚实基础。这也是继多核苷酸磷酸化酶的发现(1959年诺贝尔生理学/医学奖)，酵母Ala-tRNA序列的确定(1969年诺贝尔生理学/医学奖)、逆转录现象的发现(1975年诺贝尔生理学/医学奖)、内含子和RNA剪接现象的发现(1993年诺贝尔生理学/医学奖)、核酶的发现(1993年诺贝尔化学奖)、

关键词：核苷碱基修饰新型冠状病毒mRNA疫苗

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