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Acute Uveitis in Neovascular Glaucoma Patient after a Single Dose of Travoprost

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Case Reports in Clinical Medicine 2024年第8期13卷 275-282页

作者： lijun wang Jing Zhu Qian Feng Junfeng Yang Department of Ophthalmology The Third Peoples Hospital of Chengdu College of Medicine Southwest Jiaotong University Chengdu China

A 38-year-old man with no history of uveitis developed neovascular glaucoma (NVG) due to proliferative diabetic retinopathy (PDR). He had a history of ocular surgery with placement of glaucoma drainage implants (GDI), ultrasonic phacoemulsification, and intraocular lens implantation in both eyes. The patient had undergone a recent pars plana vitrectomy with complete panretinal photocoagulation (PRP) to clear vitreous hemorrhage in his right eye. To prevent progressive optic nerve damage, travoprost was tentatively administered because of inadequate intraocular pressure (IOP) control following surgery, laser treatment, and topical administration of many other IOP-lowering drugs. The patient experienced severe vision loss associated with acute anterior and intermediate uveitis. We consider it a rare complication due to the NVG patient’s vulnerability following ocular surgery. Given that acute uveitis developed rapidly and required time to resolve, systemic corticosteroid treatment could be considered to accelerate the resolution of inflammation.

关键词： Travoprost Uveitis Glaucoma Prostaglandin Analogues Intraocular Pressure

Progress in the diagnosis and treatment of graft fibrosis after liver transplantation

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Portal Hypertension & Cirrhosis 2024年第1期3卷 22-30页

作者： Youwei Zhao lijun wang Man Xie Wei Rao Department of Gastroenterology Medical College of Qingdao UniversityQingdaoShandongChina Department of Gastroenterology The Affiliated Hospital of Qingdao UniversityQingdaoShandongChina Division of Hepatology Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoShandongChina Department of Organ Transplantation Center The Affiliated Hospital of Qingdao UniversityQingdaoShandongChina

Liver transplantation(LT)is considered one of the best treatments for patients with end-stage liver ***,some patients with no significant clinical manifestations or abnormal laboratory tests still experience graft fibrosis during postoperative follow-up,which is often recognized by graft *** fibrosis can lead to graft dysfunction,thereby reducing the survival time of the recipient and even requiring ***,noninvasive methods are widely applied in the assessment of hepatic and allograft *** both noninvasive diagnostic models based on laboratory examination indicators and elastography technology that can quantify liver stiffness have some value in the evaluation of fibrosis,the diagnostic accuracy and characteristics of these various methods vary and cannot replace liver biopsy *** recent years,some liver-protective drugs and proprietary Chinese traditional medicines have been proven to delay or reverse chronic liver ***,their efficacy and safety for LT recipients need to be further *** article reviews the diagnosis and treatment of graft fibrosis after LT to provide a reference for improving the overall survival rate of LT recipients.

关键词： diagnosis fibrosis liver transplantation therapeutics

HyperArc performance in radiotherapy and its correlations with number and volume of multiple brain metastases

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Radiation Medicine and Protection 2024年第2期5卷 139-144页

作者： Hongtao Chen Zihuang Li Guixiang Liao lijun wang Xiaonian Deng Heli Zhong Department of Radiation Oncology Shenzhen People's HospitalThe Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSouthern University of Science and TechnologyShenzhen518020China

Objective:To assess the performance and advantages of HyperArc for radiotherapy of multiple brain metastases with dosimetric parameters with respect to coplanar volumetric modulated arc radiotherapy(c-VMAT),and characterize implicit correlations between tumor features and dosimetric ***:This retrospective study involved 40 patients with multiple brain metastases(4–16 tumors,12.8–240.8 cm3)who received simultaneous radiotherapy at the Department of Radiation Oncology,Shenzhen People's Hospital from January 2019 to December *** HyperArc and c-VMAT plans were designed by the same and qualified physicist using the Eclipse system with Truebeam.A single isocenter and a 6 MV flattening filter-free(6FFF)photon beam were used for radiotherapy of multiple brain metastases in each *** parameters of tumors and organs at risk(OARs)were compared between HyperArc and c-VMAT ***-lations between tumor features(number and volume)and dosimetric parameters were revealed and ***,monitor units(MUs)of both plan types were recorded to assess rays utilization and delivery ***:Compared to c-VMAT plans,HyperArc plans achieved higher maximum dose(D_(max))(5.23%,t=7.87,P<0.01),but lower minimum dose(Dmin)(3.94%,t=-2.12,P=0.04)and mean dose(D_(mean))(1.05%,t=-3.29,P<0.01)for planning gross tumor volumes(PGTVs).The conformity index(CI),homogeneity index(HI),gradient index(GI)and R50%of PGTVs with HyperArc were better than those with c-VMAT,with the improve-ments of 20.78%,1.68%,19.83%and 36.20%,respectively(P<0.01).The dosimetric parameters of OARs were significantly improved in HyperArc plans compared to c-VMAT ***,the D_(max)and the D_(mean)to the brainstem decreased by 16.14%and 11.37%,*** D_(max)for eye_L decreased by 16.88%,for eye_R decreased by 11.67%,for optical nerve_L decreased by 12.56%,and for chiasm decreased by 18.12%.Few correlations were observed between the differences of CI/HI/GI

关键词： HyperArc Radiotherapy Multiple brain metastases Conformity

Epidemiological characteristics of centenarian deaths in China during 2013-2020:A trend and subnational analysis

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Chinese Medical Journal 2024年第13期137卷 1544-1552页

作者： Fan Mao Weiwei Zhang Peng Yin lijun wang Jinling You Jiangmei Liu Yunning Liu Maigeng Zhou National Center for Chronic and Non-Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 100050China

Background:Studies that comprehensively address the characteristics of centenarian deaths are *** present study aimed to depict the characteristics of centenarian deaths in China and their changing ***:Data on centenarian deaths between 2013 and 2020 were obtained from the national mortality surveillance system of China,including date,place of death(PoD),and underlying cause of death(CoD).Descriptive analyses were performed to understand the epidemiological characteristics,and a joinpoint regression model was adopted to examine the changing trends in the proportions of different PoDs,CoDs among centenarians,and centenarian deaths accounting for all deaths and deaths among people aged 65 years and ***:There were 46,938 registered centenarian deaths between 2013 and 2020 that included 34,311 females(73.10%)and 12,627 males(26.90%).January(12.05%),February(9.99%),and December(9.74%)were the top three months with the highest number of *** proportions of deaths that occurred in homes,hospitals,and nursing homes were 81.71%,13.63%,and 2.68%,*** proportion of deaths in nursing homes increased by 9.60%(95%confidence intervals[CIs],6.4-12.9%)from 2014 to *** disease(35.72%)was the leading cause of death,followed by respiratory diseases(17.63%),cerebrovascular disease(15.60%),and old age(11.22%).The proportion of respiratory diseases decreased by 4.8%(95%CI,-8.8 to-0.7%),and the proportion of deaths from old age decreased by 2.3%(95%CI,-4.4 to-0.1%)per *** had the highest proportions of deaths in hospitals(39.38%)and nursing homes(14.68%).Sichuan had the highest proportion of deaths attributed to respiratory diseases(32.30%),while Jiangsu(26.58%)and Zhejiang(23.61%)had the highest proportions of deaths from old ***:Unlike other countries,centenarian deaths in China are characterized by a higher proportion of home and heart disease deaths,and this death pattern differs across provinces.

关键词： Centenarians Death Aging Cardiovascular diseases Respiratory tract diseases Place of death Cause of death

Mode-switchable dual-color infrared quantum cascade detector

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Photonics Research 2024年第2期12卷 253-259页

作者： YIXUAN ZHU SHENQIANG ZHAI KUN LI KAI GUO QIANGQIANG GUO JINCHUAN ZHANG SHUMAN LIU lijun wang FENGQI LIU JUNQI LIU Key Laboratory of Semiconductor Materials Science Beijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

In this paper,a patch-antenna-array enhanced quantum cascade detector with freely switchable operating modes among mid-wave,long-wave,and dual-color was proposed and *** dual-color absorption occurs in a single active region through an optimized coupled miniband diagonal-transition subbands arrangement,and a successful separation of the operation regimes was realized by two nested antenna arrays with different patch sizes up to room *** 77 K,the 5.7-μm channel achieved a peak responsivity of 34.6 mA/W and exhibited a detectivity of 2.0×10^(10)Jones,while the 10.0-μm channel achieved a peak responsivity of 87.5 mA/W,giving a detectivity of 5.0×10^(10)*** a polarization modulation of the incident light,the minimum cross talk of the mid-wave and the long-wave operating modes was 1:22.5 and 1:7.6,*** demonstration opens a new prospect for multicolor infrared imaging chip integration technology.

关键词： antenna polarization quantum

Proposal for a realtime Einstein-synchronization-defined satellite virtual clock

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Chinese Physics B 2024年第7期33卷 268-276页

作者：严晨皓汤雪逸王时光孟李皎悦孙海媛何奕彬王力军 Department of Precision Instrument Tsinghua UniversityBeijing 100091China Department of Physics Tsinghua UniversityBeijing 100091China

Realization of high performance satellite onboard clock is vital for various positioning, navigation, and timing applications. For further improvement of the synchronization-based satellite time and frequency references, we propose a geosynchronous(GEO) satellite virtual clock concept based on ground–satellite synchronization and present a beacon transponder structure for its implementation(scheduled for launch in 2025), which does not require atomic clocks to be mounted on the satellite. Its high performance relies only on minor modifications to the existing transponder structure of GEO satellites. We carefully model the carrier phase link and analyze the factors causing link asymmetry within the special relativity. Considering that performance of such synchronization-based satellite clocks is primarily limited by the link's random phase noise, which cannot be adequately modeled, we design a closed-loop experiment based on commercial GEO satellites for pre-evaluation. This experiment aims at extracting the zero-means random part of the ground-satellite Ku-band carrier phase via a feedback loop. Ultimately, we obtain a 1σ value of 0.633 ps(two-way link), following the Gaussian distribution. From this result, we conclude that the proposed real-time Einstein-synchronization-defined satellite virtual clock can achieve picosecond-level replication of onboard time and frequency.

关键词： Einstein synchronization satellite virtual clock geosynchronous satellite carrier phase

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针织结构温度传感器用镀银纱线的性能

丝绸 2024年第4期61卷 87-96页

作者：郭明靖王利君浙江理工大学服装学院杭州310018 浙江理工大学服装数字化技术浙江省工程实验室杭州310018 浙江理工大学丝绸文化传承与产品设计数字化技术文化和旅游部重点实验室杭州310018

为了保证针织结构温度传感器的传感性能,文章运用FLUKE289数字万用表、V-2030T微电脑加热平台等设备测试了10种典型镀银纱线在伸直与模拟线圈弯曲状态下的电阻值,分析了光照氧化和水洗条件对纱线导电性能的影响,并得到了线密度、纱线状... 详细信息

为了保证针织结构温度传感器的传感性能,文章运用FLUKE289数字万用表、V-2030T微电脑加热平台等设备测试了10种典型镀银纱线在伸直与模拟线圈弯曲状态下的电阻值,分析了光照氧化和水洗条件对纱线导电性能的影响,并得到了线密度、纱线状态、温度、光照氧化时间、水洗次数与电阻之间的关系。结果表明:10种镀银纱线的单位电阻在1.245~18.788Ω,温度电阻关系拟合R 2在0.89425~0.99040,具有良好的导电性和感温性,复丝越多的纱线电阻越小,线密度适中偏小的纱线感温性能更好;纱线的弯曲状态不会改变温度电阻规律,但会略微降低其感温线性度和导电性;光照氧化和水洗都会导致纱线导电性能变差;综合分析可设计复丝数适中偏少、捻丝结构的镀银纱线制备针织结构温度传感器。

关键词：镀银纱线针织柔性传感器导电性能感温性能力学性能耐用性能

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镉离子微波钟研究进展

仪器仪表学报 2024年第2期45卷 17-30页

作者：苗胜楠张建伟王力军时空信息精密感知技术全国重点实验室北京100084 精密测试技术及仪器国家重点实验室北京100084 清华大学精密仪器系北京100084 清华大学物理系北京100084

基于囚禁离子的微波原子钟在小型化及可移动方面具有优势,因而受到广泛关注。其中,113 Cd+离子因其所需激光数量少,基态超精细能级分裂大等优势,成为新一代实用离子微波钟的主要候选离子。近几十年来,国内外多个实验团队开展了镉离子微... 详细信息

基于囚禁离子的微波原子钟在小型化及可移动方面具有优势,因而受到广泛关注。其中,113 Cd+离子因其所需激光数量少,基态超精细能级分裂大等优势,成为新一代实用离子微波钟的主要候选离子。近几十年来,国内外多个实验团队开展了镉离子微波钟的研究工作。本文按照时间顺序,详细介绍了国内外不同实验团队在镉离子微波钟研究方面采用的技术路线及最新进展。

关键词：镉离子微波钟缓冲气体冷却激光冷却协同冷却

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氢含量对氢化锆相结构和残余应力的影响

稀有金属 2024年第1期48卷 138-144页

作者：白伟王文科王智辉闫国庆张建东王力军中国有研科技集团有限公司生物冶金国家工程实验室北京101407 有研资源环境技术研究院有限公司北京101407 北京有色金属研究总院北京100088

氢化锆是核反应堆理想的固体中子慢化剂,在制备过程中随着基体氢含量的增加,氢化物依次发生α→β→δ→ε的相转变,从而导致氢化锆基体中产生内应力,进一步导致氢化锆开裂。研究了氢化锆相组成、相结构和应力与氢含量的关系。采用X射... 详细信息

氢化锆是核反应堆理想的固体中子慢化剂,在制备过程中随着基体氢含量的增加,氢化物依次发生α→β→δ→ε的相转变,从而导致氢化锆基体中产生内应力,进一步导致氢化锆开裂。研究了氢化锆相组成、相结构和应力与氢含量的关系。采用X射线衍射(XRD)表征了样品的物相组成,H/Zr(原子比)为0.8时样品含α,γ,δ相,H/Zr为1.2和1.45时样品含γ和δ相,H/Zr为1.60和1.64时样品均只含δ相,H/Zr为1.85和1.90时样品均只含ε相,结果表明氢化锆中氢含量与物相组成的对应关系基本符合样品Zr-H相图。对XRD结果进行精修分析,得到δ相(面心立方(fcc))和ε相(面心四方(fct))氢化物晶格常数与氢含量的关系为:随着氢含量的增加,δ相氢化锆晶格常数a逐渐变大,晶胞体积也逐渐变大;氢含量越大,ε相氢化锆晶格常数a越大,c则越小,晶胞体积也更大。利用X射线衍射应力仪测量了样品表面残余应力,结果表明Zr-1Nb合金表面应力为压应力,大小为-163.7 MPa;氢化锆表面则为拉应力,结果表明:H/Zr为1.57时,表面应力是12.2 MPa;H/Zr为1.67时,表面应力是18.6 MPa;H/Zr为1.74时,表面应力是30.8 MPa;随着氢含量的增加,残余应力逐渐增大。

关键词：锆合金残余应力氢化物晶格常数