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Atmospheric and Oceanic Science Letters 2018年第1期11卷 63-70页

作者： li rong-xia SUN Jian-Qi Nansen-Zhu International Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjingChina College of Earth Science University of Chinese Academy of SciencesBeijingChina

Based on daily maximum temperature data from Chinese weather stations for the period 1960- 2013, the characteristics of the interdecadal variability of large-scale extreme hot event （EHE） frequency over the middle and lower reaches of the Yangtze River basin （MLYR） are analyzed. It is found that the frequency of large-scale EHE over the MLYR experiences two significant interdecadal changes, around the early 1970s and early 2000s, having a more-less-more variability shape during the past half century. Furthermore, the EHE frequency interdecadal variability-related atmospheric circulation patterns are diagnosed. The results indicate the western Pacific subtropical high could not be the dominant atmospheric circulation associated with the interdecadal variability of the large-scale EHE frequency over the MLYR. In contrast, the dominant teleconnection pattern over the Eurasian continent, which is represented by the second empirical orthogonal function mode of the 200 hPa geopotential height, is closely related to the interdecadal variability of the EHE frequency over the MLYR. The results of this study deepen our understanding of the variability of the EHE frequency over the MLYR and its possible mechanism.

关键词： Extreme hot event decadalvariability teleconnection EOF

甘肃省医疗机构医院感染管理专职人员现状调查

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中华医院感染学杂志 2024年第18期34卷 2796-2801页

作者：冯玉娟姚子琰孙毅张琳娜薛秀芳李霞荣王俊玲张浩军甘肃省第二人民医院公共卫生与医院感染管理科甘肃兰州730000 甘肃中医药大学公共卫生学院甘肃兰州730000 甘肃省第二人民医院公共卫生与医院组织人事科甘肃兰州730000 兰州大学公共卫生学院甘肃兰州730000 甘肃省第二人民医院公共卫生与医院院长办公室甘肃兰州730000

目的调查甘肃省医疗机构医院感染管理专职人员配置及结构现状,为合理配备医院感染管理专职人员提供科学依据。方法2023年10月对甘肃省228家二级及以上医疗机构进行医院感染管理科室配置和医院感染管理专职人员基本情况的现状调查。结果... 详细信息

目的调查甘肃省医疗机构医院感染管理专职人员配置及结构现状,为合理配备医院感染管理专职人员提供科学依据。方法2023年10月对甘肃省228家二级及以上医疗机构进行医院感染管理科室配置和医院感染管理专职人员基本情况的现状调查。结果在被调查的228家医疗机构中,90.4%二级及以上医疗机构单独设置有医院感染管理科;部分医疗机构医院感染管理专职人员配置25~40岁为主,占总人数的53.8%,其次为>40~55岁,占总人数的37.1%;从医疗机构分布情况分析,70%以上的医疗机构医院感染管理专职人员以>25~55岁为主;三级医疗机构的学历和专业配置优于二级医疗机构(χ^(2)=26.062,P<0.001),三级医疗机构中拥有本科学历和硕士学历的机构多于二级医疗机构(χ^(2)=35.310,P<0.001)。结论甘肃省二级及以上医疗机构医院感染管理科专职人员基本配置合适,部分医疗机构仍存在数量不足,专业单一、学历较低等问题。各医疗机构和卫生行政主管部门根据具体情况采用激励机制等方式引进高学历、年轻、不同专业尤其是临床和公共卫生专业人员,形成本单位或区域化能够处理医院感染相关工作和应对重大传染病等公共卫生事件的专业型、复合型、高水平医院感染管理专业队伍。

关键词：甘肃省医疗机构医院感染管理专职人员人员配置医院等级现状调查问卷调查

Investigating Sulfur Chemistry in the HD163296 Disk

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Research in Astronomy and Astrophysics 2024年第7期24卷 215-225页

作者： rong Ma Donghui Quan Yan Zhou Jarken Esimbek Dalei li xiaohu li xia Zhang Juan Tuo Yanan Feng Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Research Center for Intelligent Computing Platforms Zhejiang LaboratoryHangzhou 311100China BinZhou University Binzhou 256600China Key Laboratory of Radio Astronomy Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China

Sulfur chemistry in the formation process of low-mass stars and planets remains poorly *** protoplanetary disks are the birthplace of planets and its distinctive environment provides an intriguing platform for investigating models of sulfur *** analyzed the Atacama Large Millimeter/submillimeter Array observations of CS 7-6 transitions in the HD 163296 disk and performed astrochemical modeling to explore its sulfur *** simulated the distribution of sulfur-containing molecules and compared it with observationally deduced fractional column *** have found that the simulated column density of CS is consistent with the observationally deduced fractional column densities,while the simulated column density of C_(2)S is lower than the observationally deduced upper limits on column *** results indicate that we have a good understanding of the chemical properties of CS and C_(2)S in the *** also investigated the influence of the C/O ratio on sulfur-containing molecules and found that the column densities of SO,SO_(2),and H_2S near the centra star are dependent on the C/O ***,we found that the N[CS]/N[SO]ratio can serve as a promising indicator of the disk’s C/O ratio in HD ***,the disk of HD 163296 provides a favorable environmen for the detection of sulfur-containing molecules.

关键词： Protoplanetary Disks-Astrochemistry-Molecular Processes

X-ray excited Mn^(2+)-doped persistent luminescence materials with biological window emission for in vivo bioimaging

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Journal of Rare Earths 2024年第1期42卷 28-35,I0001页

作者： Hanrun Zheng lin liu Yi’ang li Rui rong liang Song Junpeng Shi Jing Teng xia Sun Yun Zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China University of the Chinese Academy of Sciences Beijing100049China xiamen Hospital of Traditional Chinese Medicine Xiamen361015China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108China

In recent years,persistent luminescence materials(PLMs)excited by X-rays and emitting in biological windows have received extensive attention in the field of high-sensitivity *** metal Mn^(2+)is an ideal emission center,but few studies focus on Mn^(2+)-doped PLMs with X-ray excitation and biological window ***,we report a Mn^(2+)-doped PLM,liYGeO_(4):Mn^(2+)(LYGM),with excellent biological window persistent luminescence *** excitation by UV,LYGM produces a durable biological window of persistent luminescence emission at 660 nm for up to 20 *** *** can be repeatedly excited by X-rays,resulting in long-term biological window persistent luminescence *** addition,we obtain LYGM around 200 nm in diameter by ball milling and centrifugation and improve its biocompatibility by surface modification to apply it to in vivo imaging in *** LYGM are injected into mice through the tail vein,in situ excitation of X-rays can be *** the persistent luminescence decays,LYGM can be re-excited for repeated ***,LYGM shows potential prospects for in vivo deep tissue and long-term bioimaging.

关键词： Persistent luminescence X-ray Biological window In vivo imaging Rare earths

Creep-Resistant Covalent Adaptable Networks with Excellent SelfHealing and Reprocessing Performance via Phase-Locked Dynamic Covalent Benzopyrazole-Urea Bonds

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Chinese Journal of Polymer Science 2024年第10期42卷 1545-1556,I0013页

作者： Miao Xie xiao-rong Wang Zhan-Hua Wang He-Sheng xia State Key Laboratory of Polymer Materials Engineering Polymer Research InstituteSichuan UniversityChengdu610065China School of Petrochemical Engineering Liaoning Petrochemical UniversityFushun113001China

Covalent adaptive networks(CANs)are capable of undergoing segment rearrangement after being heated,which endows the materials with excellent self-healing and reprocessing performance,providing an efficient solution to the environment pollution caused by the plastic *** main challenge remains in developing CANs with both excellent reprocessing performance and creep-resistance *** this study,a series of CANs containing dynamic covalent benzopyrazole-urea bonds were developed based on the addition reaction between benzopyrazole and isocyanate *** calculation confirmed that relatively low dissociation energy is obtained through undergoing a five-member ring transition state,confirming excellent dynamic property of the benzopyrazole-urea *** verified by the FTIR results,this nice dynamic property can be well maintained after incorporating the benzopyrazole-urea bonds into polymer *** self-healing and reprocessing performance is observed by the 3-ABP/PDMS elastomers owing to the dynamic benzopyrazole-urea *** separation induced by the aggregation of the hard segments locked the benzopyrazole-urea bonds,which also makes the elastomers display excellent creep-resistance *** hard phase locking strategy provides an efficient approach to design CANs materials with both excellent reprocessing and creep-resistance performance.

关键词： Covalent adaptive networks Self-healing polymer Dynamic covalent bond

A regularization algorithm of dynamic light scattering for estimating the particle size distribution of dual-substance mixture in water

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Particuology 2024年第6期89卷 246-257页

作者： Yanghong Wang Ziqiang Meng Zipei Zhang Min xia li xia Wei li School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

Dynamic light scattering(DLS)is a nondestructive,well-established technique for the size characterization of proteins,nanoparticles,polymers,and colloidal ***,current DLS techniques are only applied to particle groups of single composition due to the limitation of their inversion *** this study,we propose a particle size distribution inversion algorithm based on the Tikhnonov regularization method that can be applied to the dual-substance particle *** algorithm retrieves the particle size distributions of two substances,respectively,by taking advantage of their refractive index *** simulation results reveal that the algorithm has excellent accuracy and stability when the scattering angle is 30°.Instead of the original identity matrix,the first-order difference matrix and second-order difference matrix are used as the regular matrix when utilizing the Tikhnonov algorithm,which obviously improves the anti-interference,accuracy,and stability of the ***,the inversion of particle size distribution is carried out at a 0.01%–1%noise level,which shows that the algorithm has an available antinoise ***,experimental particle size measurements for a mixture of polystyrene beads and toner particles demonstrate that the proposed algorithm is superior to the traditional Tikhnonov algorithm in applicability and accuracy.

关键词： Dynamic light scattering Dual-substance mixture Particle sized istribution Tikhnonov regularization

Testing and data reduction of the Chinese Small Telescope Array(CSTAR) for Dome A,Antarctica

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Research in Astronomy and Astrophysics 2010年第3期10卷 279-290页

作者： Xu Zhou Zhen-Yu Wu Zhao-Ji Jiang xiang-Qun Cui Long-Long Feng Xue-Fei Gong Jing-Yao Hu Qi-Sheng li Gen-rong liu Jun Ma Jia-li Wang li-Fan Wang Jiang-Hua Wu li-rong xia Jun Yan xiang-Yan Yuag Feng-xiang Zhai Ru Zhang Zhen-Xi Zhu National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Nanjing Institute of Astronomical Optics ＆ Technology National Astronomical Observatories Chinese Academy of Sciences Nanjing 210042 China Purple MountainObservatory Chinese Academy of Sciences Nanjing 210008 China Chinese Center for Antarctic Astronomy Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China

The Chinese Small Telescope Array （CSTAR） is the first Chinese astronomical instrument on the Antarctic ice cap. The low temperature and low pressure testing of the data acquisition system was carried out in a laboratory refrigerator and on the 4500 m Pamirs high plateau, respectively. The results from the final four nights of test observations demonstrated that CSTAR was ready for operation at Dome A, Antarctica. In this paper, we present a description of CSTAR and the performance derived from the test observations.

关键词： instrumentation: detectors -- techniques: photometric -- stars: variables

Rational Design and Construction of a CdS QDs/InVO4 Atomic-Layer（110）/（110） Facet S-Scheme Heterojunction for Highly Efficient Photocatalytic Degradation of C2H4

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Energy & Environmental Materials 2024年第3期7卷 215-222页

作者： Yuanpeng Dong Peizhu Ji Xinyue Xu rong li Yin Wang Kevin Peter Homewood xiaohong xia Yun Gao Xuxing Chen Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials School of Materials Science&Engineering Hubei University Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences United Water (xianning) Company limited

Exploring high efficiency S-scheme heterojunction photocatalysts with strong redox ability for removing volatile organic compounds from the air is of great interest and ***,how to predict and regulate the transport of photogenerated carriers in heterojunctions is a great ***,density functional theory calculations were first used to successfully predict the formation of a CdS quantum dots/InVO4atomic-layer （110）/（110） facet S-scheme ***,a CdS quantum dots/InVO4atomic-layer was synthesized by in-situ loading of CdS quantum dots with （110） facets onto the（110） facets of *** a result of the deliberately constructed built-in electric field between the adjoining facets,we obtain a remarkably enhanced photocatalytic degradation rate for *** rate is 13.8 times that of pure CdS and 13.2 times that of pure ***-situ irradiated X-ray photoelectron spectroscopy,photoluminescence and time-resolved photoluminescence measurements were carried *** experiments validate that the built-in electric field enhanced the dissociation of photoexcited excitons and the separation of free charge carriers,and results in the formation of S-scheme charge transfer *** reaction mechanism of the photocatalytic C2H4oxidation is investigated by in-situ electron paramagnetic *** work provides a mechanistic insight into the construction and optimization of semiconductor heterojunction photocatalysts for application to environmental remediation.

关键词： CdS QDs InVO4 atomic-layer photocatalysis S-scheme volatile organic compounds

Developing a fluorescence substrate for HRP-based diagnostic assays with superiorities over the commercial ADHP

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Chinese Chemical Letters 2024年第6期35卷 439-444页

作者： Zhichao Zhou Fuqian Chen xiaotong xia Dong Ye rong Zhou Lei li Tao Deng Zhenhua Ding Fang liu Department of Radiation Medicine Guangdong Provincial Key Laboratory of Tropical Disease ResearchSchool of Public HealthSouthern Medical UniversityGuangzhou 510515China School of Pharmaceutical Sciences Guangzhou University of Chinese MedicineGuangzhou 510006China Artemisinin Research Center Guangzhou University of Chinese MedicineGuangzhou 510006China State Key Laboratory of Respiratory Disease the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Medical UniversityGuangzhou 510120China Guangzhou Laboratory Bio-IslandGuangzhou 510030China Nanshan Pharmaceutical Innovation Research Institute of Guangdong Province Foshan 528225China

The combination of horseradish peroxidase(HRP)and a fluorescence substrate has been attracting great interests in developing sensitive biochemical analysis and immunoassays.10-Acetyl-3,7-dihydroxyphenoxazine(ADHP or Amplex red)is the most sensitive fluorogenic substrate known for HRP in current market,however,it suffers from some drawbacks,such as non-specific reactivity to carboxylesterase and limited fluorescence *** the present study,a novel HRP substrate10-cyclopropylcarbonyl-dichloro-dihydroxyphenoxazine(AR-2),has been prepared,which exhibited improved sensitivity than ADHP in sensing ***,the fluorescence of AR-2/HRP demonstrated improved tolerance to physiological relevant p H fluctuation as compared to ADHP/*** detection of uric acid/urate oxidase reaction indicated excellent application prospect of AR-2/HRP for monitoring H_(2)O_(2)-generating biochemical *** interestingly,an enzyme-linked immunosorbent assay(EliSA)using AR-2 as the fluorescence reporter has been successfully used in detecting IgG against severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)from human serum ***,AR-2 exhibits improved performances over the commercial ADHP,which will be an ideal alternative to ADHP in HRP-based fluorescence biochemical analysis and immunoassays.

关键词： Fluorescence immunoassay HRP fluorescence substrate Hydroresorufin Amplex red/ADHP SARS-CoV-2

light-based 3D printing of stimulus-responsive hydrogels forminiature devices:recent progress and perspective

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Bio-Design and Manufacturing 2024年第5期7卷 721-746页

作者： Chen Xin Neng xia li Zhang Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong Kong 999077China Multi-Scale Medical Robotics Center Hong Kong Science ParkShatin NTHong Kong 999077China Chow Yuk Ho Technology Center for Innovative Medicine The Chinese University of Hong KongHong Kong 999077China Department of Surgery The Chinese University of Hong KongHong Kong 999077China CUHK T Stone Robotics Institute The Chinese University of Hong KongHong Kong 999077China

Miniature devices comprising stimulus-responsive hydrogels with high environmental adaptability are now considered competitive candidates in the fields of biomedicine,precise sensors,and tunable *** and advanced fabricationmethods are critical formaximizing the application capabilities ofminiature ***-based three-dimensional(3D)printing technology offers the advantages of a wide range of applicable materials,high processing accuracy,and strong 3D fabrication capability,which is suitable for the development of miniature devices with various *** paper summarizes and highlights the recent advances in light-based 3D-printed miniaturized devices,with a focus on the latest breakthroughs in lightbased fabrication technologies,smart stimulus-responsive hydrogels,and tunable miniature devices for the fields of miniature cargo manipulation,targeted drug and cell delivery,active scaffolds,environmental sensing,and optical ***,the challenges in the transition of tunable miniaturized devices from the laboratory to practical engineering applications are *** opportunities that will promote the development of tunable microdevices are elaborated,contributing to their improved understanding of these miniature devices and further realizing their practical applications in various fields.

关键词： 3D printing Stimulus-responsive hydrogels Miniature devices Shape-morphing