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Optimized online filter stack spectrometer for ultrashort X-ray pulses

Nuclear Science and Techniques 2024年第5期35卷 85-98页

作者： jia-Xing Wen Ge Ma Ming-Hai Yu Yu-Chi Wu Yong-Hong Yan Shao-Yi wang Huai-Zhong Gao Lu-Shan wang Yu-Gang Zhou Qiang Li Yue Yang Fang Tan Xiao-Hui Zhang Jie Zhang Wen-bo Mo Jing-Qin Su Wei-Min Zhou Yu-Qiu Gu Ming Zeng Zong-Qing Zhao Science and Technology on Plasma Physics Laboratory Laser Fusion Research CenterCAEPMianyang 621900China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China School of Information Engineering Southwest University of Science and TechnologyMianyang 621010China

Currently,with the advent of high-repetition-rate laser-plasma experiments,the demand for online diagnosis for the X-ray spectrum is increasing because the laser-plasma-generated X-ray spectrum is very important for characterizing electron dynamics and *** this study,scintillators and silicon PIN(P-type–intrinsic-N-type semiconductor)diodes were used to construct a wideband online filter stack *** X-ray sensor and filter arrangement was optimized using a genetic algorithm to minimize the condition number of the response ***,the unfolding error was significantly reduced based on numerical *** detector responses were quantitatively calibrated by irradiating the scintillator and PIN diode with various nuclides and comparing the measuredγ-ray peaks.A prototype 15-channel spectrometer was developed by integrating an X-ray detector with front-and back-end *** prototype spectrometer could record X-ray pulse signals at a repetition rate of 1 ***,an optimized spectrometer was employed to record the real-time spectra of laser-driven bremsstrahlung *** optimized spectrometer offers a compact solution for spectrum diagnostics of ultrashort X-ray pulses,exhibiting improved accuracy in terms of spectrum measurements and repetition rates,and could be widely used in next-generation high-repetition-rate high-power laser facilities.

关键词： Filter stack spectrometer Laser plasma diagnostics X-ray diagnostics Scintillator PIN diode

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Identification of deuterons at BESIII

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Chinese Physics C 2024年第1期48卷 1-6页

作者：王维郑波秦佳佳王至勇 University of South China Hengyang 421001China Key Laboratory of Advanced Nuclear Energy Design and Safety Ministry EducationHengyang 421001China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

The identification of deuterons with momenta in the range of 0.52−0.72 GeV/c is studied with specific ionization energy loss information using a data sample collected by the BESIII detector at center-of-mass energies between 4.009 and 4.946 *** deuteron samples are selected using time of flight *** all data samples,the deuteron identification efficiencies are higher than 95%,with a maximum difference of%between data and Monte Carlo *** verifies the effectiveness of the deuteron identification method based on specific ionization energy loss and provides valuable information for future studies on processes involving deuterons in the final state at BESIII.

关键词： specific ionization energy loss BESIII identification of deuterons particle identification efficiency

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Herbal Hepatotoxicity:Convert Blame into Rational Usage

Herbal Hepatotoxicity:Convert Blame into Rational Usage

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第十四届全国中药和天然药物学术研讨会

作者： jia-bo wang Zhi-jie Ma He-rong Cui Zheng-sheng Zou Yan-ling Zhao Xiao-he Xiao 302 Military Hospital

＜正＞Herbal hepatotoxicity,an unresolved critical issue which impacts clinical safety of herbal remedies worldwide,has been recognized for many years,but new herbal hepatotoxins are constantly *** China,it is newly estimated that nearly 1/4 of drug-induced liver injury（DILI）cases are attributed to herbal medicine while even another 1/2 of DILI cases cannot

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Gastrointestinal manifestations of critical ill heatstroke patients and their associations with outcomes:A multicentre,retrospective,observational study

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World Journal of Gastroenterology 2024年第4期30卷 346-366页

作者： Yu-Cong wang Xin-Yang Jin Zheng Lei Xiao-jiao Liu Yu Liu Bang-Guo Zhang jian Gong Lie-Tao wang Lv-Yuan Shi Ding-Yuan Wan Xin Fu Lu-Ping wang Ai-jia Ma Yi-Song Cheng Jing Yang Min He Xiao-Dong Jin Yan Kang bo wang Zhong-Wei Zhang Qin Wu Department of Critical Care Medicine West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina School of Pharmacy Macao University of Science and TechnologyMacao 999078China Department of Critical Care Medicine The First People's Hospital of Ziyang CityZiyang 641399Sichuan ProvinceChina Department of Critical Care Medicine The First People's Hospital of Guanghan CityChengdu 618399Sichuan ProvinceChina Department of Critical Care Medicine Lezhi County Traditional Chinese Medicine HospitalChengdu 641599Sichuan ProvinceChina Department of Critical Care Medicine Chengdu Qingbaijiang District People's HospitalChengdu 610399Sichuan ProvinceChina Department of Critical Care Medicine Ziyang People's HospitalChengdu 641399Sichuan ProvinceChina

BACKGROUND Extreme heat exposure is a growing health problem,and the effects of heat on the gastrointestinal(GI)tract is *** study aimed to assess the incidence of GI symptoms associated with heatstroke and its impact on *** To assess the incidence of GI symptoms associated with heatstroke and its impact on *** Patients admitted to the intensive care unit(ICU)due to heatstroke were included from 83 *** history,laboratory results,and clinically relevant outcomes were recorded at ICU admission and daily until up to day 15,ICU discharge,or *** symptoms,including nausea/vomiting,diarrhoea,flatulence,and bloody stools,were *** characteristics of patients with heatstroke concomitant with GI symptoms were *** regression analyses were performed to determine significant predictors of GI *** A total of 713 patients were included in the final analysis,of whom 132(18.5%)patients had at least one GI symptom during their ICU stay,while 26(3.6%)suffered from more than one *** with GI symptoms had a significantly higher ICU stay compared with those *** mortality of patients who had two or more GI symptoms simultaneously was significantly higher than that in those with one GI *** logistic regression analysis revealed that older patients with a lower GCS score on admission were more likely to experience GI *** The GI manifestations of heatstroke are common and appear to impact clinically relevant hospitalization outcomes.

关键词： Extreme heat Flatulence Sunstroke Intensive care units Diarrhea

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Searching for new players in regulating axon outgrowth in Caenorhabditiselegans

Searching for new players in regulating axon outgrowth in Ca...

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2012全国发育生物学大会

作者： jia-ming wang,bo Zhang,Song Song,Mei Ding Institute of genetics and developmental biology,Chinese Academy of Sciences,Beijing,100101

The nervous system development is a highly complex,but precisely controlled biological *** the formation of neural network,the axon of individual neuron needs to be guided to proper site and connect with its target cell. The proper axon outgrowth is regulated by guidance *** kinds of guidance cues have been identified in the past decades:Netrins,Slits,Semaphorins and ***,how a fairly limited number of guidance cues pattern the complex nervous system is less *** used *** neurons as a model to study axon *** previous studies in our lab have demonstrated that a conserved Wnt pathway plays an important role in RME A-P axon outgrowth.A Ror family kinase CAM-1,previously considered as Wnts inhibitor,functions as a main receptor for Wnt signal during this *** does CAM-1 facilitate Wnt signaling? Are there any other guidance factors cooperate with CAM-1 to guide axon outgrowth? In order to answer above questions,we performedan yeast two-hybrid screen using CAM-1 intracellular domain as a bait and indentified several putative CAM-1 binding *** functional analysis will be reported at the meeting. Conclusions:CAM-l functions as the Wnt receptor to regulate RME A-P axon outgrowth.

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A review on WO_(3)-based composite photocatalysts:synthesis,catalytic mechanism and diversified applications

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Rare Metals 2024年第8期43卷 3441-3459页

作者： Xue Zhang Zi-Qi Zhang Yan-Dong Sun Xiao-jia Ma Feng-Xian Jin Fang-Yuan Zhang Wei-Guang Han bo-Xiong Shen Sheng-Qi Guo College of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Department of Food and Chemical Engineering Liuzhou Institute of TechnologyLiuzhou 545616China

Photocatalysis as an emerging "green" energy conversion technology has attracted domestic and international *** technology uses semiconductor photocatalysts to convert solar energy into directly usable chemical energy,showing great potential for application in environmental pollutant purification and clean energy production,with broad development *** many semiconductor materials,tungsten trioxide(WO_(3)) is favored by researchers in the field of photocatalysis because of its good visible light response and excellent valence band hole oxidation ***,a large number of photocatalysts based on WO_(3),in particular W03-based composite photocatalysts,have been reported,and their applications cover a wide range of *** order to promote the development of WO_(3)-based photocatalysts and provide a reference for colleagues,we present a systematic summary of the applications and research progress of W03-based composites in the field of photocatalysis in recent *** from the structural properties of WO_(3)itself,this article summarizes the preparation methods and structure-activity relationships of WO_(3)-based composite ***,it introduces the current application status of existing WO_(3)-based composite photocatalysts in CO_(2) reduction,hydrogen production,nitrogen fixation,and pollutant ***,the development prospects were analyzed.

关键词： WO_(3)-based composite photocatalysts Intrinsic characteristic Preparation method Reaction mechanism Applications

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光学元件磁流变加工不确定度误差工艺方法

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红外与激光工程 2024年第3期53卷 203-212页

作者：高博范斌王佳吴湘辛强光场调控科学技术全国重点实验室四川成都610209 中国科学院先进光学研制中心四川成都610209 中国科学院光电技术研究所四川成都610209 中国科学院大学北京100049

为减少磁流变抛光过程中误差对加工精度的影响,实现光学元件磁流变高精度加工,采用一种不确定度误差工艺方法对加工中的误差进行抑制。通过对磁流变加工过程中的位置误差和去除函数误差进行不确定度分析,在理论分析与实验分析的基础上... 详细信息

为减少磁流变抛光过程中误差对加工精度的影响,实现光学元件磁流变高精度加工,采用一种不确定度误差工艺方法对加工中的误差进行抑制。通过对磁流变加工过程中的位置误差和去除函数误差进行不确定度分析,在理论分析与实验分析的基础上进行验证实验。由仿真与实验结果可知,加工中面形误差与中频误差均存在3.5 nm的不确定度误差值,通过验证实验,得到了加工后的面形误差RMS值为20 nm,中频误差RMS值为14 nm。结果表明,采用误差不确定度的方法可优化加工工艺流程,减少误差对加工过程的影响,可以达到不确定度下的面形精度。该方法为磁流变高精度确定性加工以及面形误差与中频误差的抑制问题提供了一种解决方案。

关键词：光学加工面形误差磁流变抛光中频误差

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时间戳服务到UTC(NIM)的溯源方法研究

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仪器仪表学报 2024年第2期45卷 176-183页

作者：张宇贾正森龙波王玉琢贵州省计量测试院贵阳550003 中国计量科学研究院北京100029

原子时标国家计量基准UTC(NIM)由中国计量科学研究院维护和保持,溯源至协调世界时(UTC),是统一全国时间频率量值的最高依据。随着信息技术的不断发展,时间戳服务被广泛应用于司法、医疗、金融、电子商务、知识产权等领域。根据我国在贸... 详细信息

原子时标国家计量基准UTC(NIM)由中国计量科学研究院维护和保持,溯源至协调世界时(UTC),是统一全国时间频率量值的最高依据。随着信息技术的不断发展,时间戳服务被广泛应用于司法、医疗、金融、电子商务、知识产权等领域。根据我国在贸易结算、医疗等领域对法制计量的需求,时间戳机构(TSA)提供的时间应溯源至UTC(NIM)以实现国内统一和国际互认。本文提出使用一种校准器对TSA提供的时间进行远程和本地评估。实验结果表明,在局域网进行本地校准时,TSA与UTC(NIM)时间偏差的不确定度(k=2)小于2 ms;在广域网环境下,即使校准器与TSA之间相距超过1000 km,TSA与UTC(NIM)时间偏差的不确定度(k=2)小于713 ms。

关键词：时间戳校准溯源性

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WNT5A Regulated by miR154-5p is Associated with Angiopoiesis and Invasion of Placental Site Trophoblastic Tumor (PSTT)

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Biomedical and Environmental Sciences 2024年第4期37卷 423-427页

作者： ZHANG Sai CHEN Zhi Xian ZHANG Mo DU Yan ZHOU jia Yi WU Jing YU Yin Hua CAO Qi ZHAO Hong bo Obstetrics and Gynecology Hospital Fudan UniversityShanghai 200011China Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases Shanghai 200011China

Placental site trophoblastic tumor(PSTT),a rare gestational trophoblastic neoplasm(GTN),exhibits slow growth,late-onset metastasis,and chemotherapy insensitivity[1,2].The invasive capacity of trophoblasts induces angiogenesis in PSTT,yet the specific mechanism remains unclear[3].PSTT is typically resistant to chemotherapy and hysterectomy stands as the primary therapeutic choice for patients with an overall cure rate of approximately 75%-80%[4,5].Therefore,investigating the precise emergence and progression of PSTT is crucial,aiming to identify novel targets for diagnosis and therapy.

关键词： chemotherapy diagnosis metastasis

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An air-stable single-crystal layered oxide cathode based on multifunctional structural modulation for high-energy-density sodium-ion batteries

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Science China Chemistry 2024年

作者： Yi-Feng Liu Hai-Yan Hu jia-Yang Li Hongrui wang Yi Zhao Jingqiang wang Yuan-bo Wu Yan-jiang Li Guang-Yu Zhang Qing-Qun Sun Yan-Fang Zhu Rui-Ren Tang Xiong-Wei Wu jia-Zhao wang Shi-Xue Dou Shu-Lei Chou Yao Xiao Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University School of Chemistry and Materials Science Hunan Agricultural University Institute of Energy Materials Science University of Shanghai for Science and Technology Wenzhou Key Laboratory of Sodium-Ion Batteries Wenzhou University Technology Innovation Institute for Carbon Neutralization Institute for Carbon Neutralization College of Chemistry and Materials Engineering Wenzhou University College of Chemistry and Chemical Engineering Central South University

P2-type layered oxide, Na2/3Ni1/3Mn2/3O2, has drawn particular interest as a promising cathode material for sodium-ion batteries(SIBs) due to its fast sodium-ion transport channels with low migration potential. However, some catastrophic flaws, such as air instability, complicated multiphase evolution, and irreversible anionic redox, limit its electrochemical performance and hinder its application. Here, an air-stable single-crystal P2-type Na2/3Ni1/3Mn1/3Ti1/3O2is proposed based on the multifunctional structural modulation of Ti substitution that could alleviate the issues for practical SIBs. As a result, the cathode with high energy density shows excellent air stability and highly reversible phase transitions(P2–OP4), and delivers faster kinetics and stable anion redox chemistry. Meanwhile, a thorough investigation of the relationship between structure, function, and properties is demonstrated,emphasizing formation processes, electrochemical behavior, structural evolution, and air stability. Overall, this study provides the direction of multifunctional structural modulation for the development of high-performance sodium-based layered cathode materials for practical applications.

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