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In-flight Energy Calibration of the GECAM Gamma-ray Detectors

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Research in Astronomy and Astrophysics 2024年第10期24卷 48-57页

作者： Rui Qiao Dong-Ya Guo Wen-Xi Peng Yan-Qiu Zhang Shuo xiao Shao-lin Xiong Chao Zheng Chao-Yang li Jia-Cong liu Wang-Chen Xue Jian-Jian He Zheng-Hua An Da-li Zhang Xin-Qiao li li-Ming Song Shi-Jie Zheng Ke Gong Ya-Qing liu Xin-Ying Song xiao-Yun Zhao Xiang-Yang Wen Yan-Bing Xu Xiang Ma xiao-bo li Ping Wang Yue Huang Ce Cai Qi-Bin Yi Yi Zhao Chen-Wei Wang Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China China West Normal University Nanchong 637002China Xiangtan University Xiangtan 411105China Beijing Normal University Beijing 100875China

The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)mission is designed to monitor the Gamma-Ray Bursts(GRBs)associated with gravitational waves and other high-energy transient *** mission consists of two microsatellites which are planned to operate at the opposite sides of the *** GECAM satellite could detect and localize GRBs in about 8 keV-5 MeV with its 25 Gamma-Ray Detectors(GRDs).In this work,we report the in-flight energy calibration of GRDs using the characteristic gamma-ray lines in the background spectra,and show their performance evolution during the commissioning ***,a preliminary cross-calibration of energy response with Fermi GBM data is also presented,validating the energy response of GRDs.

关键词： (stars:)gamma-ray burst:general instrumentation:detectors methods:data analysis

THE GENERATION OF CNOIDAL WAVE IN A WAVE FLUME

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Journal of Hydrodynamics 1991年第4期3卷 8-15页

作者： Qiu Da-hong Yu Yu-xiu xiao bo li Mu-guo Dalian University of Technology,Dalian 116024,P.R.China

The method of cnoidal wave generation in a wave flume is studied in this *** to the wave equa- tion in shallow water,the wave paddle motion equation for given wave parameters and water depth is *** controlling signal for driving wavemaker can be converted from its solution,and high wave height shallow water waves can be *** experiment results show that,the parameters of the wave generated are very close to the required ones in a certain distance in front of the paddle of the wavemaker.

关键词： Wave THE GENERATION OF CNOIDAL WAVE IN A WAVE FLUME

Effect of different processing parameters on interfacial heat-transfer behavior in high-pressure die-casting process

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Transactions of Nonferrous Metals Society of China 2018年第12期28卷 2599-2606页

作者： Hong-mei YANG Wen-bo YU Yong-you CAO xiao-bo li Zhi-peng GUO Shou-mei XIONG School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationTsinghua UniversityBeijing 100084China

Vacuum die casting can reduce the'air entrapment'phenomenon during casting *** on the temperature measurements at metal-die interface with different processing parameters,such as slow shot speed(VL),high shot speed(VH),pouring temperature(Tp)and initial die temperature(Tm),inverse method was developed to determine the interfacial heat transfer coefficient(IHTC).The results indicate that a closer contact between the casting and die could be achieved when the vacuum system is *** is found that the vacuum could strongly increase the values of IHTC and decrease the grain size in *** IHTC could have a higher peak value with increasing the Tp from680to720℃or the VL from0.1to0.4m/*** addition,the influence of the VH and Tm on IHTC could be negligible.

关键词： vacuum die casting interfacial heat transfer behavior metal-die interface externally solidified crystals

F Wave Study in Amyotrophic Lateral Sclerosis： Assessmen of Segmental Motoneuronal Dysfunction

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Chinese Medical Journal 2015年第13期128卷 1738-1742页

作者： Jia Fang li-Ying Cui Ming-Sheng liu Yu-Zhou Guan xiao-Guang li bo Cui Qing-Yun Ding Department of Neurology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China

Background： Dysfunctional spinal circuit may play a role in the pathophysiology ofarnyotrophic lateral sclerosis （ALS）. The purpose of this study was to use F waves for assessment of segmental motoneuronal excitability following upper motor neuron （UMN） dysfunctions in ALS. Meihods： We studied the F waves of 152 ulnar nerves recorded fi＇om abductor digiti minimi in 82 patients with ALS. Two groups of hands were defined based on the presence or absence of pyramidal signs in the same upper limb. The group with pyramidal signs in tile upper limbs was designated as the P group, and the group without pyramidal signs in the upper limbs was designated as the NP group. Results： The mean （P 〈 0.001）, median （P 〈 0.001） and maximum （P = 0.035） F wave amplitudes, mean （P 〈 0.001 ）, median （P 〈 0.001） and maximum （P - 0.003） F/M amplitude ratio, index repeating neuron （P 〈 0.001 ） and index repeater F waves （P 〈 0.001 ） of the P group were significantly increased compared with the NP group. No significant differences were identified for F wave chronodispersion （P= 0.628）, mean F wave latency （P 0.151 ）, minimum F wave latency （P = 0.211 ）, maximum F wave latency （13 = 0. 199）. F wave persistence （P = 0.738）. F wave duration （P = 0. 152）, F wave conduction velocity （P = 0.813） and number of giant F waves （P = 0.072） between the two groups. Conclusions＂ In this study, increased F wave amplitude, F/M amplitude ratio and number of repeater F waves reflected enhanced segmental lnotoneuronal excitability following UMN dysfunctions in ALS.

关键词： Amyotrophic Lateral Sclerosis: Excitability F wave Segmental Motoneuron Upper Motor Neuron

High resolution electrospray ionization tandem Mass spectrometry of polymethoxylated flavones（PMFs）

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High resolution electrospray ionization tandem Mass spectrom...

Clinical and genetic features of transthyretin-related familial amyloid polyneuropathy in China

中国化学会第十届全国天然有机化学学术会议

作者： Yan Wang xiao-bo li Chong-Sheng Peng School of pharmacy Shanghai Jiao Tong University

＜正＞Polymethoxylated flavones（PMF）are a family of natural compounds displaying a variety of bio-activities,such as anti-oxidation,anti-inflammation,antibacterial,and *** identification of PMFs in foods and drugs by tandem mass spectrum pattern is *** have been only a few reports regarding tandem mass spectrometry and several fragmentation

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Chinese Medical Journal 2020年第21期133卷 2616-2618页

作者： Lei liu xiao-bo li Zheng-Mao Hu Shun-Xiang Huang Bei-Sha Tang Ru-Xu Zhang Department of Neurology The Third Xiangya HospitalCentral South UniversityChangshaHunan 410013China Health Management Center The Third Xiangya HospitalCentral South UniversityChangshaHunan 410013China Laboratory of Medical Genetics Central South UniversityChangshaHunan 410013China National Clinical Research Center for Geriatric Disorders ChangshaHunan 410008China

Transthyretin-related familial amyloid polyneuropathy(TTR-FAP)is an autosomal dominant,life-threatening,and treatable disorder caused by TTR *** is characterized by amyloid deposition in the peripheral nerves and major organs,including the heart,kidneys,and *** far,more than 130 TTR mutations have been identified,in which ***30Met is the most common in endemic ***-FAP has been reported in 29 countries,including many countries in Europe,USA,Japan,China,and *** and genetic features of TTR-FAP are relatively clear in Europe and Japan,however,it still need to be carried out in ***,we reported the clinical and genetic features of 8 Chinese TTR-FAP families.

关键词： amyloid Clinical organs

Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei xiao Qianqian Gu Haoyu li Mengyao li Yude Wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Zinc alloys

Characteristics and formation mechanisms of defect bands in vacuum-assisted high-pressure die casting AE44 alloy

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Transactions of Nonferrous Metals Society of China 2022年第6期32卷 1852-1865页

作者： Ying-ying HOU Meng-wu WU Bing-hui TIAN xiao-bo li Shou-mei XIONG Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

The microstructure in vacuum-assisted high-pressure die casting(HPDC) Mg-4Al-4RE(AE44) alloy was studied. Special attention was paid to the characteristics of defect bands and their formation mechanisms. Since double defect bands are commonly observed, the cross section of die cast samples is divided into five parts with different grain morphologies and size distributions. The inner defect band is much wider than the outer one. both the defect bands are solute segregation bands, resulting in a higher area fraction of Al;RE;phase than that in the adjacent regions. No obvious aggregation of porosities is observed in the defect bands of AE44 alloy. This may be due to a narrow solidification temperature range of AE44 alloy and a large amount of latent heat released during the precipitation of intermetallic phases. The formation of the defect bands is related to the shear stress acting upon the partially solidified alloy, which can lead to collapse of the grain network. However, the generation mechanisms of shear stress in the outer and inner defect bands are quite different.

关键词： high-pressure die casting magnesium alloy AE44 microstructure defect band

Clinical and radiographic results of cervical artificial disc arthroplasty： over three years follow-up cohort study

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Chinese Medical Journal 2010年第21期123卷 2969-2973页

作者： TIAN Wei HAN xiao liU bo li Qin HU lin li Zhi-yu YUAN Qiang HE Da XING Yong-gang Department of Spine Surgery Beijing Jishuitan Hospital Fourth Clinical Medical College of Peking University Beijing 100035 China

Background Theoretic advantages of cervical disc arthroplasty include preservation of normal motion and biomechanics in the cervical spine, and reduction of adjacent-segment degeneration. The clinical and radiographic effects of cervical disc arthroplasty in short term have been ascertained. The aim of this study is to research the data of mid-term *** In this prospective cohort study, 50 patients who underwent cervical disc arthroplasty from December 2003 to January 2006 were enrolled. There were 39 patients who received 1-level disc arthroplasty, and 11 patients received 2-level disc arthroplasty, with an average age of 50.9 years （range from 29 to 73）. The median follow-up was 41.85months （range from 36.00-55.63 months）. Patients were followed prospectively with respect to their symptoms,neurologic signs, and radiographic *** The median value of Japanese Orthopaedic Association （JOA） score was 14.0 before surgery, and 16.5 at the most recent follow-up （P 〈0.01）. The median value of the recovery rate of the JOA score was 92.2%. The preoperative range of motion （ROM） at the indexed level was （10.40±4.97）°, which has significantly correlated with the most recent follow-up ROM which was （8.56±4.76）° （P 〈0.05, r=0.33）. The ROM at the operative level at the most recent follow-upwas greater than the value at the 3-month follow-up of （7.52±3.37）° （P 〈0.05）. The preoperative functional spinal unit （FSU） angulation was （-0.96±6.52）°, which was not significantly correlated with that of the most recent follow-up value of （-2.65±7.95）° （P 〈0.01, r=0.53）. The preoperative endplate angulation was （2.61±4.85）°, which had no significant correlation with that of the most recent follow-up value of （0.71±6.41）° （p 〉0.05）.Conclusions The clinical and radiographic results of cervical disc arthroplasty are good in mid-term follow-up. The normal range of motion of the operated level and the biomechanics in the cervical spine are well preserved.

关键词： cervical disc arthroplasty cervical spondylosis cervical disc herniation