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Flame-assisted ultrafast synthesis of functionalized carbon nanosheets for high-performance sodium storage

CARBON ENERGY 2024年第7期6卷 123-133页

作者： Chen, Chen Yan, Dong Von Lim, Yew Liu, Lei Li, Xue Liang Chen, Junjie Li, Tian Chen Zhu, Youyu Cai, Jiangtao Huang, ying Zhang, Yating yang, hui ying Northwestern Polytech Univ Sch Chem & Chem Engn Xian Peoples R China Singapore Univ Technol & Design Pillar Engn Prod Dev Singapore Singapore Xian Univ Technol Sch Elect Engn Xian Peoples R China Northwestern Polytech Univ Sch Chem & Chem Engn Xian 710072 Peoples R China Singapore Univ Technol & Design Pillar Engn Prod Dev 8 Somapah Rd Singapore 487372 Singapore Henan Univ Sch Phys & Elect Int Joint Lab New Energy Mat & Devices Henan Prov Kaifeng Peoples R China Xian Univ Sci & Technol Coll Chem & Chem Engn Xian Peoples R China Xian Univ Sci & Technol Coll Chem & Chem Engn Xian 710054 Peoples R China

The unique structural features of hard carbon (HC) make it a promising anode candidate for sodium-ion batteries (SIB). However, traditional methods of preparing HC require special equipment, long reaction times, and large energy consumption, resulting in low throughputs and efficiency. In our contribution, a novel synthesis method is proposed, involving the formation of HC nanosheets (NS-CNs) within minutes by creating an anoxic environment through flame combustion and further introducing sulfur and nitrogen sources to achieve heteroatom doping. The effect of heterogeneous element doping on the microstructure of HC is quantitatively analyzed by high-resolution transmission electron microscopy and image processing technology. Combined with density functional theory calculation, it is verified that the functionalized HC exhibits stronger Na+ adsorption ability, electron gain ability, and Na+ migration ability. As a result, NS-CNs as SIB anodes provide an ultrahigh reversible capacity of 542.7 mAh g-1 at 0.1 A g-1, and excellent rate performance with a reversible capacity of 236.4 mAh g-1 at 2 A g-1 after 1200 cycles. Furthermore, full cell assembled with NS-CNs as the can present 230 mAh g-1 at 0.5 A g-1 after 150 cycles. Finally, in/ex situ techniques confirm that the excellent sodium storage properties of NS-CNs are due to the construction of abundant active sites based on the novel synthesis method for realizing the reversible adsorption of Na+. This work provides a novel strategy to develop novel carbons and gives deep insights for the further investigation of facile preparation methods to develop high-performance carbon anodes for alkali-ion batteries. A carbon nanosheet rich in nitrogen and sulfur elements can be obtained in a few minutes using a flame combustion method. The creative preparation method gives the carbon material a unique structure and abundant active sites, thereby promoting the carbonaceous material to obtain superior capacity and stability of s

关键词： carbon nanosheets heteroatom doping sodium-ion battery sustainable materials HARD CARBON POROUS CARBON ANODE NITROGEN INSIGHTS OXYGEN

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雷丸的化学成分、药理作用及质量控制研究进展

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中国新药杂志 2024年第10期33卷 1002-1008页

作者：杨洋王珏杨会英杨锐肖新月中国药科大学中药学院南京211198 中国食品药品检定研究院北京100050 国家药品监督管理局药用辅料质量研究与评价重点实验室北京100050

真菌类中药是中药的重要组成部分,其有效成分具有一定程度的相似性。大部分真菌类药材均含有蛋白、多糖及小分子化合物,具有多种功效。雷丸为白蘑科真菌雷丸(Omphalia lapidescens Schroet.)的干燥菌核,其传统应用以杀虫消积为主。现代... 详细信息

真菌类中药是中药的重要组成部分,其有效成分具有一定程度的相似性。大部分真菌类药材均含有蛋白、多糖及小分子化合物,具有多种功效。雷丸为白蘑科真菌雷丸(Omphalia lapidescens Schroet.)的干燥菌核,其传统应用以杀虫消积为主。现代研究表明雷丸的主要有效成分包括蛋白类、多糖类及小分子化合物等,具有杀虫、抗肿瘤、增强免疫功能、抗炎、抗氧化等药理作用。本文通过查阅相关文献,对雷丸的化学成分、药理作用以及质量控制等方面进行综述,并对《中华人民共和国药典》中真菌类药材的质量标准现状进行总结,以期在前人研究的基础上,为雷丸的深入研究以及真菌类药材质量标准的完善提供参考。

关键词：雷丸有效成分药理作用质量控制

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全国统一大市场建设水平测度——兼论对中国经济发展的影响

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亚太经济 2024年第2期 82-95页

作者：赵春明杨宏举杨慧瀛北京师范大学经济与工商管理学院北京100875 哈尔滨商业大学经济学院哈尔滨150028

基于统一大市场构建逻辑,采用2009—2021年中国整体和省级数据,从市场一体化和市场壁垒两方面对统一市场建设水平进行测度,并就建设统一大市场对中国经济的影响及其作用机制进行实证考察。研究发现:中国市场一体化水平呈持续上升态势,... 详细信息

基于统一大市场构建逻辑,采用2009—2021年中国整体和省级数据,从市场一体化和市场壁垒两方面对统一市场建设水平进行测度,并就建设统一大市场对中国经济的影响及其作用机制进行实证考察。研究发现:中国市场一体化水平呈持续上升态势,并且政府市场治理对市场一体化水平的支撑作用较大;各省市场壁垒呈不断下降趋势;统一大市场建设对中国经济整体具有显著促进效应,但在地区经济层面,统一大市场建设对经济发展具有明显的“J曲线”效应,且受到信息化发展水平的正向调节;统一大市场建设通过促进地区协调、平衡发展推动经济增长;经济发展水平较低时,往往具有较高的市场壁垒,并且市场壁垒对经济的抑制效应明显,随着经济水平提升,市场壁垒下降,对经济的持续促进效应更为明显。

关键词：全国统一大市场 J曲线效应区域平衡信息化水平

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成人肠道CRE定植病例医院感染发病率的Meta分析

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中国感染控制杂志 2024年第5期23卷 592-599页

作者：刘银梅王欣杨惠英施菊妹李颖川上海市第十人民医院院内感染与疾病控制处上海200072 上海市东方医院血液科上海200120 上海市第十人民医院院长办公室上海200072

目的系统评价成人肠道耐碳青霉烯类肠杆菌目细菌(CRE)定植病例医院感染发病率,为CRE医院感染的预防和控制提供参考依据。方法计算机检索Embase、Cochrane、PubMed、Web of Science、CNKI、万方、维普、中国生物医学文献数据库(CBM)8个... 详细信息

目的系统评价成人肠道耐碳青霉烯类肠杆菌目细菌(CRE)定植病例医院感染发病率,为CRE医院感染的预防和控制提供参考依据。方法计算机检索Embase、Cochrane、PubMed、Web of Science、CNKI、万方、维普、中国生物医学文献数据库(CBM)8个数据库自建库至2023年6月CRE肠道定植病例医院感染发病率的相关文献,应用Stata 17.0软件进行Meta分析,采用敏感性分析评价研究结果的稳定性,采用Egger’s检验评价发表偏倚。结果共纳入16篇文献,其中英文11篇,中文5篇,总样本量2151例患者。Meta分析结果显示,成人肠道CRE定植病例医院感染发病率为23.1%(95%CI:14.8%~32.5%)。以不同研究设计类型、发表年份,以及研究调查的地域、科室和感染部位分组因素进行亚组分析,亚组间的合并效应量比较,差异均无统计学意义(均P>0.05)。在CRE定植发展为医院感染中,耐碳青霉烯类肺炎克雷伯菌(CRKP)占比96.0%(95%CI:86.8%~100%),定植病例中血流感染发病率为18.2%(95%CI:10.3%~27.6%)。CRE定植病例30天病死率为32.6%(95%CI:20.5%~45.9%),CRE感染病例30天病死率为36.9%(95%CI:16.0%~60.2%)。结论近年来CRE定植病例医院感染发病率较高,需对高危科室进行主动筛查和重点干预,以降低CRE定植病例医院感染发病率。

关键词：主动筛查耐碳青霉烯类肠杆菌耐药肠杆菌目定植医院感染 Meta分析

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基于三级妇幼保健院应用微信公众号开展健康科普传播状况的调查

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中国妇幼卫生杂志 2024年第1期15卷 7-14页

作者：宋波杨慧颖杨琦李志新中国疾病预防控制中心妇幼保健中心北京100081

目的了解我国三级妇幼保健院应用微信公众号开展健康科普传播的现状,为促进各级妇幼保健机构充分利用微信公众号平台开展健康科普宣传,提高新媒体健康传播效能提供参考依据。方法选取2021年参加全国三级妇幼保健机构绩效考核并有微信公... 详细信息

目的了解我国三级妇幼保健院应用微信公众号开展健康科普传播的现状,为促进各级妇幼保健机构充分利用微信公众号平台开展健康科普宣传,提高新媒体健康传播效能提供参考依据。方法选取2021年参加全国三级妇幼保健机构绩效考核并有微信公众号的274所机构为调查对象。采用自制问卷,于2022年4—6月通过问卷星向被调查机构的微信公众号负责人进行调查。问卷内容涉及负责人基本情况,以及本机构纳入三级妇幼保健院微信公众号科普作品影响力监测的微信公众号建设和管理情况,科普作品的创作、发布和运营情况,针对用户调查情况等。结果274所有微信公众号的三级妇幼保健院中,67.9%的微信公众号为服务号;98.9%的微信公众号具有健康宣教功能;用户注册数超过20万人的微信公众号占29.2%。各机构微信公众号管理人员数量普遍较少,仅为1人的机构占29.2%,37.9%的机构无专人管理。微信公众号负责人所在科室主要为宣传科(38.7%)、健康教育科(27.4%)及院办(13.1%);负责人专业背景为医学相关专业的仅占36.9%;各机构确定科普作品主题的方法主要为配合科普宣传日(94.2%)、各科室提供(90.1%)、热点话题(81.8%)、根据节气/天气变化(59.5%)等,主题确定来源于用户需求调查的仅为37.2%;科普稿源以相关业务科室提供为主(95.3%);94.5%的机构在科普作品发布前有专人审核。发布的科普作品主要通过院内官方宣传媒体(84.3%)和院内自媒体(77.4%)进行推广,经由辖区妇幼体系推广的机构仅占13.1%。微信公众号运营管理人员主要是本机构专职(47.1%)和兼职人员(49.3%);79.6%的机构无运营经费支持;53.6%的机构设定了科普作品发布激励机制,仅有21.2%的机构开展过微信公众号用户调查。结论绝大多数三级妇幼保健院均能通过微信公众号开展妇幼健康科普传播工作,但普遍缺乏用户调查和对公众号运营的支持,应进一步加强对微信公众号的管理,并充分利用微信公众号开展与用户的沟通及需求评估,从而进一步促进微信公众号健康传播能力的提升。

关键词：三级妇幼保健院微信公众号健康教育健康传播

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盐酸氨溴索注射液玻璃安瓿包装中20种元素迁移量的测定与风险评估

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中南药学 2024年第1期22卷 194-199页

作者：齐艳菲贾菲菲王颖赵霞杨会英中国食品药品检定研究院北京100050

目的测定盐酸氨溴索注射液玻璃安瓿包装中20种元素的迁移量,并进行风险评估。方法采用电感耦合等离子体质谱法(ICP-MS)测定B、Al、Li、Ba、Mg、Fe、Zn、Mn、Cd、Ti、Co、Cd、Pb、As、Sb、Ce、Zr 17种元素,采用电感耦合等离子体发射光... 详细信息

目的测定盐酸氨溴索注射液玻璃安瓿包装中20种元素的迁移量,并进行风险评估。方法采用电感耦合等离子体质谱法(ICP-MS)测定B、Al、Li、Ba、Mg、Fe、Zn、Mn、Cd、Ti、Co、Cd、Pb、As、Sb、Ce、Zr 17种元素,采用电感耦合等离子体发射光谱法(ICPOES)测定Si、K、Ca 3种元素。结果 20种元素回收率为90.6%~107.7%。ICP-MS法测定17种元素检测限为0.004~2.8 ng·mL^(-1),ICP-OES法测定Si、K、Ca 3种元素检测限分别为7.4、10.1、7.9 ng·mL^(-1)。各元素按每日最大摄入量计,均在安全范围内,玻璃安瓿中主要迁出Si、B、Al、Fe、Ti、Ba、Li元素。结论 ICP-MS法与ICP-OES法经方法学验证可用于盐酸氨溴索注射液玻璃安瓿包装中20种元素迁移量的测定,迁移量及迁移趋势可为其风险监控及玻璃包装发生脱片风险的预判提供参数。

关键词：盐酸氨溴索注射液玻璃安瓿电感耦合等离子体质谱法电感耦合等离子体发射光谱法

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Dental erosion and severe tooth decay related to soft drinks:a case report and literature review

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第5期10卷 395-399页

作者： Ran CHENG hui yang Mei-ying SHAO Tao HU Xue-dong ZHOU Department of Operative Dentistry and Endodontics West China College of Stomatology Sichuan University Chengdu 610041 China

Soft drinks have many potential health *** inherent acids and sugars have both acidogenic and cariogenic potential,resulting in dental caries and potential enamel *** this report we present a 25-year-old man complaining with the severe worn-out of the front teeth during the past 3 *** had a history of drinking cola for more than 7 years and had a poor oral *** decays were present in the incisors and the canines,while less severe lesions were noted on the premolars and the *** review is to show the relationship between dental erosion and caries and soft *** efforts have been taken to reduce the harmful effect of soft drinks.

关键词： Dental erosion Caries Soft drinks Toothbrushing

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Two-sided Long Baseline Radargrammetry from Ascending Descending Orbits with Application to Mapping Post-seismic Topography in the West Sichuan Foreland Basin

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Journal of Mountain Science 2014年第5期11卷 1298-1307页

作者： CHENG Hai-qin CHEN Qiang LIU Guo-xiang yang ying-hui LIU Li-yao Department of Remote Sensing and Geoinformation Engineering Southwest Jiaotong University School of Civil Engineering and Architecture East China Jiaotong University

One-sided ascending or descending Synthetic Aperture Radar（SAR） stereoradargrammetry has limited accuracy of topographic mapping due to the short spatial baseline（-100 km） and small intersection angle. In order to improve the performance and reliability of generating digital elevation model（DEM） from spaceborne SAR radargrammetry, an exploration of two-sided stereoradargrammetry from the combination of ascending and descending orbits with geometric configuration of long spatial baseline（-1000 km） was conducted in this study. The slant-range geometry between SAR sensors to the earth surface and the Doppler positioning equations were employed to establish the stereoscopic intersection model. The measurement uncertainty of two-sided radargrammetric elevation was estimated on the basis of radar parallax of homogeneous points between input SAR images. Two stereo-pairs of ALOS/PALSAR（Advanced Land Observing Satellite/Phased Array type L-band Synthetic Aperture Radar） acquisitions with the orbital separation almost 1080 km over the west Sichuan foreland basin with rolling topography in southwestern China were employed in the study to obtain the up-to-date terrain data after the 2008 Wenchuan earthquake that hit this area. Thequantitative accuracy assessment of two-sided radargrammetric DEM was performed with reference to field GPS observations. The experimental results show that the elevation accuracy reaches 5.5 m without ground control points（GCPs） used, and the accuracy is further improved to 1.5 m with only one GPS GCP used as the least constraint. The theoretical analysis and testing results demonstrate that the twosided long baseline SAR radargrammetry from the ascending and descending orbits can be a very promising technical alternative for large-area and high accuracy topographic mapping.

关键词： Ascending and descending orbits Twosided SAR radargrammetry Long baseline Image parallax Accuracy assessment

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A nationwide survey of diabetes education, self-management and glycemic control in patients with type 2 diabetes in China

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Chinese Medical Journal 2012年第23期125卷 4175-4180页

作者： GUO Xiao-hui YUAN Li LOU Qing-qing SHEN Li SUN Zi-lin ZHAO Fang DAI Xia HUANG Jin yang hui-ying Department of Endocrinology Peking University First HospitalBeijing 100034 China Department of Endocrinology West China Medical School WestChina Hospital Sichuan University Chengdu 610041 China Department of Endocrinology Sir Run Run Shaw HospitalHangzhou Zhejiang 310016 China Institute of Diabetes Zhongda Hospital Medical School SoutheastUniversity Nanjing Jiangsu 210009 China Department of Endocrinology China-Japan Friendship HospitalBeijing 100029 China Department of Endocrinology First Affiliated Hospital GuangxiMedical University Nanning Guangxi 530021 China Nursing Department Second Xiangya Hospital of Central SouthUniversity Changsha Hunan 410011 China Department of Endocrinology and Metabolism First AffiliatedHospital of Kunming Medical College Kunming Yunnan 650032China

Background Diabetes management could be improved by diabetes education, through influencing attitudes towards diabetes, knowledge and behaviors of patients. The purpose of this study was to characterize the impact of diabetes education on glycemic control, and to assess the attitude, knowledge and self-care behavior in patients with type 2 diabetes in China. Methods This questionnaire-based survey was conducted in 50 medical centers across China from April to July of 2010. The patients with type 2 diabetes were eligible for the study. The information of glycemic control and diabetes education was collected. The diabetes attitude scale-3 formulae, a questionnaire of diabetes knowledge and Summary of Diabetes Self-care Activities scale were used to assess attitude, knowledge and the self-care of patients, respectively. Results Among the 5961 eligible respondents （3233 males; mean age （59.50＋12.48） years; mean hemoglobin Alc （HbAlc）（8.27＋2.23）%）, most patients （79.8%） considered themselves educated on diabetes. Compared with patients without diabetes education, their educated counterparts showed significant lower value of HbAlc, after controlling for age, gender, body mass index and duration of diabetes （P 〈0.01）. The patients who received diabetes education also performed significant higher scores on attitude, knowledge and self-care than their uneducated counterparts. Patients with lower income or education level tended to have higher glucose levels, and showed lower percentage of patients received diabetic education. Conclusions Chinese patients with diabetes education achieved better glycemic control than un-educated patients. Our study indicates effort is required to provide professional education to patients, with emphasis on lower income and lower education level populations.

关键词： diabetes education self-management glycemic control

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SAR Image Coregistration Using Fringe Definition Detection

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Journal of Mountain Science 2013年第5期10卷 790-800页

作者： yang ying-hui CHEN Qiang LIU Guo-xiang Li Zhi-lin CHENG Hai-qin Liu Li-yao Department of Remote Sensing and Geoinformation Engineering Southwest Jiaotong University School of Civil Engineering and Architecture East China Jiaotong University

In order to overcome the limitation of cross correlation coregistration method for Synthetic Aperture Radar （SAR） interferometric pairs with low coherence, a new image coregistration algorithm based on Fringe Definition Detection （FDD） is presented in this paper. The Fourier transformation was utilized to obtain spectrum characteristics of interferometric fringes. The ratio between spectrum mean and peak was proposed as the evaluation index for identifying homologous pixels from interferometric images. The satellites ERS-1/2 C-band SAR acquisitions covering the yangtze River plain delta, eastern China and ALOS/PALSAR L-band images over the Longmen Shan mountainous area, southwestern China were respectively employed in the experiment to validate the proposed coregistration method. The testing results suggested that the derived Digital Elevation Model （DEM） from FDD method had good agreement with that from the cross correlation method as well as the reference DEM at high coherence area. However, The FDD method achieved a totally improved topographic mapping accuracy by 24 percent in comparison to the cross correlation method. The FDD method also showed better robustness and achieved relatively higher performance for SAR image eoregistration in mountainous areas with low coherence.

关键词： SAR image coregistration Spectrumcharacteristics Fringe definition detection Interferometric Synthetic Aperture Radar (InSAR) Accuracy assessment

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