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Science Bulletin 2024年第13期69卷 2059-2070页

作者： Chuanliang Wei Zhengran wang Peng wang Xinlu Zhang Xuguang An Jinkui Feng Baojuan Xi Shenglin Xiong School of Chemistry and Chemical Engineering School of Materials Science and EngineeringShandong UniversityJinan 250100China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

The practical application of lithium–sulfur(li–S)batteries is inhibited by the shuttle effect of lithium polysulfides(liPSs)and slow polysulfide redox kinetics on the S cathode as well as the uncontrollable growth of dendrites on the li metal ***,both cathode and anode sides must be considered when modifying liS ***,two-dimensional(2D)ultrathin CoSe_(2)nanobelts are in situ grown on 2D N-doped MXene nanosheets(CoSe_(2)@N-MXene)via one-step solvothermal process for the first *** to its unique 2D/2D structure,CoSe_(2)@N-MXene can be processed to crumpled nanosheets by freeze-drying and flexible and freestanding films by vacuum *** crumpled CoSe_(2)@NMXene nanosheets with abundant active sites and inner spaces can act as S hosts to accelerate polysulfide redox kinetics and suppress the shuttle effect of liPSs owing to their strong adsorption ability and catalytic conversion effect with ***,the CoSe_(2)@N-MXene film(CoSe_(2)@NMF)can act as a current collector to promote uniform li deposition because it contains lithiophilic CoSe_(2)and N *** the systematic effect of CoSe_(2)@N-MXene on S cathode and li metal anode,the electrochemical and safety performance of li–S batteries are ***_(2)@NMF also shows excellent storage performances in flexible energy storage devices.

关键词： Ultrathin CoSe_(2)nanobelts N-doped MXene nanosheets In situ growth Flexible MXene-based films li-S batteries

基于形态学开运算的浸矿体系孔隙结构及其演化特征

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工程科学学报 2024年第2期46卷 199-208页

作者：王雷鸣李辉尹升华潘晨阳廖文胜北京科技大学金属矿山高效开采与安全教育部重点实验室北京100083 北京科技大学土木与资源工程学院北京100083 核工业北京化工冶金研究院北京101149

立足堆浸体系的偏析分层复杂结构,结合X-ray CT无损探测、形态学开运算处理、MATLAB和OsiriX可视化软件等手段,引入颗粒间孔隙的当量孔隙尺寸、面积、数量等关键表征参量,如从二维量化和三维可视化层面揭示浸矿体系中颗粒间孔隙结构特... 详细信息

立足堆浸体系的偏析分层复杂结构,结合X-ray CT无损探测、形态学开运算处理、MATLAB和OsiriX可视化软件等手段,引入颗粒间孔隙的当量孔隙尺寸、面积、数量等关键表征参量,如从二维量化和三维可视化层面揭示浸矿体系中颗粒间孔隙结构特征及其演化规律.研究发现,细颗粒夹层呈“包裹体”状且均位于粗矿石颗粒的内部,分析认为其是造成堆浸体系颗粒偏析和分层的重要致因;浸矿作用下微细颗粒迁移导致矿堆内部发生沉积压实作用,由197 mm降至180 mm以下;浸矿21 d后,矿堆上部孔隙呈增大趋势,下部孔隙率呈减小趋势,此外,纵向当量孔隙的直径由2.81 mm减小至2.18 mm,其变化趋势和程度要显著大于横向颗粒间孔隙的当量直径;对比浸矿0 d和21 d的柱浸体系三维颗粒间孔隙结构,证实了细颗粒夹层所处区域的粘结聚集以及细颗粒夹层周边区域形成溶液绕流、溶液优势流动路径.

关键词：金属矿堆浸技术颗粒偏析颗粒间孔隙三维可视化

Current research on alexithymia in elderly people in nursing institutions: a scoping review

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Nursing Communications 2024年第17期8卷 1-7页

作者： Meng-Yuan Teng Gui-Meng wang Wen-Jing Yu hui Ren Xiang-Shu Cui School of Nursing Yanbian UniversityYanji 133002China

To describe and analyze the research status of alexithymia in elderly people in nursing institutions,and summarizes the existing research results and *** literature in PubMed,Cochranelibrary,Web of Science,EBSCO,Proquest,Scopus,Sinomed,CNKI,WanFang,VIP was computer searched,and the time frame was build to October 30,2023.A total of 15 articles were included,comprising 10 in Chinese and 5 in *** them,14 articles were cross-sectional studies reporting the prevalence and influencing factors of communication disorders in elderly people residing in nursing homes.A total of three assessment tools were ***,three articles described preventive or intervention measures targeting *** has a high incidence and severity among elderly individuals in nursing ***,there are only a few assessment tools available,and experimental studies are notably *** research should focus on enhancing the understanding of alexithymia in this population by developing and validating more comprehensive assessment tools,diversifying research methodologies,and conducting intervention studies that consider the various influencing factors.

关键词： nursing institutions elderly people alexithymia scoping review

汶川地震伤致筋膜室综合征发病部位及早期诊疗分析

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中华外科杂志 2008年第24期46卷 1859-1861页

作者：杨衡王军康斌王陶李叶萍汪利辉四川省绵阳市中心医院骨科 621000

目的分析地震伤致骨筋膜室综合征（OCS）的发病部位及早期诊治方法。方法2008年5月12日发生的汶川地震所致OCS伤员67例，男性38例，女性29例，年龄8～69岁，平均38．1岁。其中合并胫腓骨折34处，合并股骨骨折9处，合并肱骨骨折4处，合... 详细信息

目的分析地震伤致骨筋膜室综合征（OCS）的发病部位及早期诊治方法。方法2008年5月12日发生的汶川地震所致OCS伤员67例，男性38例，女性29例，年龄8～69岁，平均38．1岁。其中合并胫腓骨折34处，合并股骨骨折9处，合并肱骨骨折4处，合并尺桡骨骨折13处，合并手足骨折各有1处。OCS的发病部位包括小腿41处，大腿25处，手2处，足3处，臀部19处，前臂15处以及上臂10处。密切观察临床症状和体征，确诊后即时切开减压。结果全部115处骨OCS中，82处经二期缝合，创口愈合、血供恢复、功能满意，23处经二期缝合、植皮后创面愈合，5处因肢体缺血坏死而截肢，另有2例患者（含5处OCS）死亡。结论地震中OCS的罕见发病部位比例升高。早期诊断、严密观测、及时切开减压是治疗OCS的重要措施。

关键词：筋膜间隔综合征减压术,外科自然灾害地震

Fucoxanthin promotes the chain lengthening reaction of polyunsaturated fatty acids in vivo by enhancing FADS2 enzyme activity

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Food Science and Human Wellness 2024年

作者： Xiao-Yue li Tian-Xin Yang Ying-Cai Zhao Cheng-Cheng wang Chang-Hu Xue Teruyoshi Yanagita Yu-Ming wang Tian-Tian Zhang SKL of Marine Food Processing & Safety Control College of Food Science and Engineering Ocean University of China Laboratory of Nutrition Biochemistry Department of Applied Biochemistry and Food Science Saga University

Alpha-linolenic acid (ALA) is capable of synthesizing EPA and DHA in vivo， but the conversion rate is hard to meet the body's need for rapid DHA supplementation. Studies have shown that fucoxanthin can increase DHA content in the liver of mice， but the mechanism is not clear. Moreover， the effect of fucoxanthin and its metabolite fucoxanthinol on the chain lengthening reaction of n-6 polyunsaturated fatty acids (PUFAs) is little studied. In this study， the effects of fucoxanthin and fucoxanthinol on the chain elongation of n-3 and n-6 series PUFAs were investigated in mice. Results showed that fucoxanthin and fucoxanthinol significantly increased the conversion of n-3 series ALA to DHA and n-6 series LA to AA in the serum， liver， small intestine， and heart of mice. In addition， fucoxanthin accelerated the rate of DHA supplementation by ALA in the brain. Further mechanistic studies revealed that the role of fucoxanthin in promoting PUFAs conversion was not regulated at transcriptional level， but by increasing the activity of fatty acid desaturase 2 (FADS2)， a key enzyme of chain elongation reaction of n-3 and n-6 PUFAs. This study fundamentally provided theoretical bases for a new strategy of dietary supplementation of n-3 and n-6 PUFAs.

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基于超声导波技术的双层粘接结构界面质量检测

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中国机械工程 2024年第5期35卷 916-927页

作者：吴慧李晓高沈国浪王兴国马成文景德镇陶瓷大学机械电子工程学院景德镇333403

针对粘接结构界面质量难以检测的问题,提出一种超声导波检测技术方法。基于弹簧模型和波动方程建立超声导波在双层粘接结构中传播的数学模型,获得不同粘接界面的频散方程,通过求解该方程获得不同粘接界面的频散特性。利用COMSOL软件模... 详细信息

针对粘接结构界面质量难以检测的问题,提出一种超声导波检测技术方法。基于弹簧模型和波动方程建立超声导波在双层粘接结构中传播的数学模型,获得不同粘接界面的频散方程,通过求解该方程获得不同粘接界面的频散特性。利用COMSOL软件模拟了声波在不同粘接界面的传播过程。仿真结果表明,在频率为1 MHz时刚性粘接条件下,数值求解的群速度为4.632 km/s,仿真平均群速度为4.505 km/s,误差为2.74%;在滑移粘接条件下,数值求解的群速度为4.855 km/s,仿真平均群速度为5.045 km/s,误差为3.91%;在完全脱粘条件下,双层粘接结构频散曲线为单层频散曲线的叠加。通过对双层介质超声导波实验检测结果的分析,发现实验结果与数值求解和有限元仿真结果吻合较好,验证了该理论模型的正确性。

关键词：粘接结构弹簧模型频散方程有限元仿真群速度

Forecasting supernova observations with the CSST: I. Photometric samples

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Chengqi liu Youhua Xu Xianmin Meng Xin Zhang Shi-Yu li Yuming Fu Xiaofeng wang Shufei liu Zun Luo Guanghuan wang Hu Zhan Department of Astronomy School of Physics Peking University Kavli Institute for Astronomy and Astrophysics Peking University Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of Sciences Beijing Planetarium Beijing Academy of Science and Technology Leiden Observatory Leiden University Kapteyn Astronomical Institute University of Groningen Physics Department Tsinghua University School of Astronomy and Space Science University of Chinese Academy of Sciences

The China Space Station Telescope (CSST, also known as Xuntian) is a serviceable two-meter-aperture wide-field telescope operating in the same orbit as the China Space Station. The CSST plans to survey a sky area of 17,500 deg2of the medium-to-high Galactic latitude to a depth of 25-26 AB mag in at least 6 photometric bands over 255-1,000 nm. Within such a large sky area,slitless spectra will also be taken over the same wavelength range as the imaging survey. Even though the CSST survey is not dedicated to time-domain studies, it would still detect a large number of transients, such as supernovae (SNe). In this paper, we simulate photometric SN observations based on a strawman survey plan using the Sncosmo package. During its 10-year survey,the CSST is expected to observe about 5 million SNe of various types. With quality cuts, we obtain a “gold” sample that comprises roughly 7,400 SNe Ia, 2,200 SNe Ibc, and 6,500 SNe II candidates with correctly classified percentages reaching 91%,63%, and 93%(formally defined as classification precision), respectively. The same survey can also trigger alerts for the detection of about 15,500 SNe Ia (precision 61%) and 2,100 SNe II (precision 49%) candidates at least two days before the light ***, the near-ultraviolet observations of the CSST will be able to catch hundreds of shock-cooling events serendipitously every year. These results demonstrate that the CSST can make a potentially significant contribution to SN studies.

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2023 Guideline for the management of hypertension in the elderly population in China

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Journal of Geriatric Cardiology 2024年第6期21卷 589-630页

作者： Hypertension Branch of Chinese Geriatrics Society,Beijing Hypertension Association,National Clinical Research Center of the Geriatric Diseases Qi HUA li FAN Zeng-Wu wang Jing li 不详 Xuanwu Hospital Capital Medical UniversityBeijingChina Chinese PLA General Hospital BeijingChina Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Preamble Hypertension is one of the most common chronic diseases and the primary risk factor for stroke,myocardial infarction and even cardiovascular *** than half of the elderly population has high blood *** people are a unique group,and strategies for the prevention,diagnosis,evaluation,and treatment of hypertension in elderly individuals differ significantly from those in the general population.

关键词： hypertension prevention diagnosis

近地轨道质子和α粒子入射InP产生的位移损伤模拟

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物理学报 2024年第5期73卷 85-91页

作者：白雨蓉李培何欢刘方李薇贺朝会西安交通大学核科学与技术学院西安710049

磷化铟(InP)材料具有禁带宽度大、电子迁移率高、耐高温、抗辐照等优点,是制备航天器电子器件的优良材料.近地轨道内的质子和α粒子对近地卫星威胁巨大,其在InP电子器件中产生的位移损失效应是导致InP电子器件电学性能下降的主要因素.... 详细信息

磷化铟(InP)材料具有禁带宽度大、电子迁移率高、耐高温、抗辐照等优点,是制备航天器电子器件的优良材料.近地轨道内的质子和α粒子对近地卫星威胁巨大,其在InP电子器件中产生的位移损失效应是导致InP电子器件电学性能下降的主要因素.本文使用蒙特卡罗软件Geant4研究近地轨道的质子与α粒子分别经过150μm二氧化硅和2.54 mm铝层屏蔽后,在500/1000/5000μm InP材料中产生的非电离能量损失(non-ionizing energy loss,NIEL)、平均非电离损伤能随深度分布以及年总非电离损伤能.研究发现:低能质子射程短且较易发生非电离反应,入射粒子能谱中低能粒子占比越大,材料厚度越小,NIEL值越大;计算质子和α粒子年总非电离损伤能,质子的年总非电离损伤能占比达98%,表明质子是近地轨道内产生位移损伤的主要因素;α粒子年总非电离损伤能占比小,但其在InP中的NIEL约为质子的2-10倍,应关注α粒子在InP中产生的单粒子位移损伤效应.本文计算为InP材料在空间辐射环境的应用提供了参考依据.

关键词：磷化铟位移损伤 Geant4 非电离能量损失近地轨道

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脂滴荧光探针的研究进展

分析化学 2024年第5期52卷 597-608页

作者：王丹刘越张跃伟樊丽于雪吉林化工学院化学与制药工程学院山西大学环境科学研究所

脂滴(LDs)是真核细胞中一类重要的细胞器，在脂质代谢等生命活动中发挥了重要作用。脂滴的检测不仅有助于理解脂滴参与生命活动的作用机制，而且对相关疾病的诊断和治疗具有重要的指导意义。脂滴荧光探针可分为两类：一类是单功能脂滴... 详细信息

脂滴(LDs)是真核细胞中一类重要的细胞器，在脂质代谢等生命活动中发挥了重要作用。脂滴的检测不仅有助于理解脂滴参与生命活动的作用机制，而且对相关疾病的诊断和治疗具有重要的指导意义。脂滴荧光探针可分为两类：一类是单功能脂滴定位探针，仅对细胞中的脂滴进行特异性标记和荧光成像；另一类是多功能脂滴荧光探针，具有定位脂滴、监测细胞微环境、同时成像双细胞器、检测脂滴中活性物种和诊疗一体化等多重功能。本文对近年来报道的脂滴荧光探针进行了总结与评述，探讨了脂滴荧光探针应用于探究重要细胞生理过程、脂滴与其它细胞器(如内质网、线粒体、溶酶体和细胞核等)的动态相互作用以及在相关疾病诊断方面的发展趋势。

关键词：脂滴荧光探针生物成像细胞器靶向评述

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