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International Journal of Disaster Risk Science 2022年第1期13卷 100-113页

作者： sai leung ng Graduate Institute of Earth Science Chinese Culture UniversityTaipei 11114TaiwanChina

This study adopted an extended theory of planned behavior to understand how risk perception affected disaster preparedness *** intercept survey(N=286)was conducted at a typhoon-prone district of Hong Kong,China in 2019,then the data were analyzed using structural equation *** results indicated that risk perception and intention of preparedness were predictors of disaster preparedness *** perception significantly affected intention of preparedness and the effect was partially mediated by subjective *** perception also significantly affected attitude and perceived behavioral control,but attitude and perceived behavioral control were not significantly correlated with intention of *** only may this study supplement the existing literature of disaster preparedness toward typhoons,but also it provides insights for the planning and management of natural hazards and disaster risk reduction in Hong Kong,China.

关键词： Disaster preparedness behaviour Hong Kong,China Risk perception Structural equation modelling Theory of planned behaviour Typhoon preparedness

Effects of hedgerows on sediment erosion in Three Gorges Dam Area, China

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International Journal of Sediment Research 2008年第2期23卷 119-129页

作者： sai-leung ng Kwai-Cheong CHAU Department of Geography and Resource Management the Chinese University of Hong KongHong KongChinaProf

The Three Gorges Dam Area refers to the river section from Chongqing to Yichang on the Yangtze River,which has a drainage area of 75,098 km2,and involves 19 cities and *** hedgerows have been used in this area to control soil erosion and to improve hillslope stability in the catchment of this river *** experimental hedgerow plots were established in 1994 in order to study the effects of hedgerows on erosion *** the period of 1994-1997,runoff and soil loss data were collected on these test plots,including the chemical and physical properties of soil and related topographical *** results indicate that:(1) after 4 years of cultivation and crop planting,soil fertility increased dramatically in the hedgerow *** organic matter,total nitrogen,and total phosphorus contents in the hedgerow plots were 5-9 times higher than that in the control *** each of the hedgerow plots,soil structure became more stable,the quantity of granules larger than 0.02 mm increased and those finer than 0.02 mm decreased;(2) All hedgerow plots showed a major effect on reducing soil loss and surface runoff;(3) Overland flow velocity along the upper portion of the hedgerow plots was greatly reduced due to hedgerow resistance,which explains the significant decrease in soil losses in hedgerow plots,despite the fact that the hedgerow plots and the control plots had the same total runoff.

关键词： Hedgerow Erosion Runoff Soil properties Three Gorges Dam Project

Prostate health index can stratify patients with Prostate Imaging Reporting and Data System score 3 lesions on magnetic resonance imaging to reduce prostate biopsies

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Asian Journal of Andrology 2024年第1期26卷 20-24页

作者： John Shung-Lai leung Wai-Kit Ma Brian Sze-Ho Ho Stacia Tsun-Tsun Chun Rong Na Yongle Zhan Chi-Yuen ng Chi-Ho Ip Ada Tsui-Lin ng Yiu-Chung Lam Division of Urology Department of SurgeryQueen Mary HospitalUniversity of Hong KongHong KongChina Division of Urology Department of SurgeryPrincess Margaret HospitalHongKongChina

We aim to evaluate prostate health index as an additional risk-stratification tool in patients with Prostate Imaging Reporting and Data System score 3 lesions on multiparametric magnetic resonance *** with biochemical or clinical suspicion of having prostate cancer who underwent multiparametric magnetic resonance imaging in two tertiary centers(Queen Mary Hospital and Princess Margaret Hospital,Hong Kong,China)between January 2017 and June 2022 were ***-magnetic resonance imaging fusion biopsies were performed after prostate health index *** who only had Prostate Imaging Reporting and Data System score 3 lesions were further stratified into four prostate health index risk groups and the cancer detection rates were *** of the 747 patients,47.3%had Prostate Imaging Reporting and Data System score 3 lesions *** detection rate of clinically significant prostate cancer in this group was 15.0%.The cancer detection rates of clinically significant prostate cancer had statistically significant differences:5.3%in prostate health indexng the patients,26.9%could have avoided a biopsy with a prostate health indexng clinically significant prostate *** health index could be used as an additional risk stratification tool for patients with Prostate Imaging Reporting and Data System score 3 *** could be avoided in patients with low prostate health index,with a small risk of missing clinically significant prostate cancer.

关键词： biopsy fusion biopsy magnetic resonance imaging prostate cancer prostate health index

Quantitative and qualitative subgenomic RNA profiles of SARS-CoV-2 in respiratory samples: A comparison between Omicron BA.2 and non-VOC-D614G

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Virologica Sinica 2024年第2期39卷 218-227页

作者： Zigui Chen Rita Way Yin ng Grace Lui Lowell Ling Agnes S.Y.leung Chit Chow Siaw Shi Boon Wendy C.S.Ho Maggie Haitian Wang Renee Wan Yi Chan Albert Martin Li David Shu Cheong Hui Paul Kay Sheung Chan Department of Microbiology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Medicine and Therapeutics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anaesthesia and Intensive Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Paediatrics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anatomical and Cellular Pathology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Jockey Club School of Public Health and Primary Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina Stanley Ho Centre for Emerging Infectious Diseases Faculty of MedicineThe Chinese University of Hong KongHong KongChina

The SARS-CoV-2 Omicron variants are notorious for their transmissibility,but little is known about their subgenomic RNA(sgRNA)*** study applied RNA-seq to delineate the quantitative and qualitative profiles of canonical sgRNA of 118 respiratory samples collected from patients infected with Omicron BA.2 and compared with 338 patients infected with non-variant of concern(non-VOC)-D614G.A unique characteristic profile depicted by the relative abundance of 9 canonical sgRNAs was reproduced by both BA.2 and non-VOCD614G regardless of host gender,age and presence of ***,such profile was lost in samples with low viral load,suggesting a potential application of sgRNA pattern to indicate viral activity of individual patient at a specific time point.A characteristic qualitative profile of canonical sgRNAs was also reproduced by both BA.2 and *** presence of a full set of canonical sgRNAs carried a coherent correlation with crude viral load(AUC¼0.91,95%CI 0.88–0.94),and sgRNA ORF7b was identified to be the best surrogate marker allowing feasible routine application in characterizing the infection status of individual *** potentials in using sgRNA as a target for vaccine and antiviral development are worth pursuing.

关键词： Coronavirus SARS-CoV-2 Omicron BA.2 Non-VOC-D614G RNA-seq Subgenomic RNA(sgRNA)

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香港国家地质公园粮船湾组火山岩岩石学研究

中国地质 2011年第4期38卷 1079-1093页

作者：邢光福吴振扬陶奎元伍世良陈荣姜杨李龙明余明刚中国地质调查局南京地质矿产研究所江苏南京210016 香港地貌岩石保育协会香港中文大学地理与资源管理学系香港大学地球科学系

在香港国家地质公园西贡火山岩园区,核心地质景观是白垩纪粮船湾组(Kkh)火山岩优美的六方形石柱(柱状节理),它们的岩石类型长期存在熔岩和火山碎屑岩之争。笔者等经野外调查和薄片岩石学研究,确认粮船湾组火山岩实属一种特殊的熔岩——... 详细信息

在香港国家地质公园西贡火山岩园区,核心地质景观是白垩纪粮船湾组(Kkh)火山岩优美的六方形石柱(柱状节理),它们的岩石类型长期存在熔岩和火山碎屑岩之争。笔者等经野外调查和薄片岩石学研究,确认粮船湾组火山岩实属一种特殊的熔岩——流纹质碎斑熔岩,以普遍的柱状节理、斑晶具有碎斑结构和珠边结构、基质发育霏细结构和流动构造为特征;它们不仅代表了香港地区中生代最晚期火山喷发的产物,而且构成了西贡破火山机构的中央侵出相岩穹。推断粮船湾组火山岩石柱是地球上已知面积最大的流纹质碎斑熔岩石柱群(～150 km2),目前所见的火山岩石柱仅是长期剥蚀后的残余部分。

关键词：流纹质碎斑熔岩火山岩石柱白垩纪粮船湾组香港国家地质公园

一种基于深度学习的新型针灸针自动计数的云服务系统:提高针灸安全性的策略

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Digital Chinese Medicine 2024年第1期7卷 40-46页

作者：黄梓皓韦君逸陈海勇吴凤亮香港大学李嘉诚医学院中医药学院中国香港999077 Department of Mathematics and Statistics Georgetown UniversityWashington D.C.20057USA 香港理工大学康复科学系中国香港999077

目的病人针灸治疗时,漏针可能造成严重后果。为增强针灸安全性,本研究将开发一个基于深度学习的自动云端数针系统。方法本研究利用拍有针灸针的手机图片为曾预先训练的定向目标检测模型(Oriented R-CNN)进行转移学习,以开发一种能够自... 详细信息

目的病人针灸治疗时,漏针可能造成严重后果。为增强针灸安全性,本研究将开发一个基于深度学习的自动云端数针系统。方法本研究利用拍有针灸针的手机图片为曾预先训练的定向目标检测模型(Oriented R-CNN)进行转移学习,以开发一种能够自动计算图片中针灸针数量的目标检测算法。我们首先拍摄了一个包含590张图片的训练集以及一个包含1025张图片的验证集。随后在带有NVIDIA Tesla T4图形处理器(GPU)的Google Colab环境中部署了MMRotate工具箱为模型进行训练。我们将训练的模型与Telegram bot手机小程序界面集成,并评估模型的准确率、精确率和召回率。本小程序中云端数针系统的速度则以端到端处理时间计算。结果在每张图片20根针的验证集情景中,我们的定向检测模型在准确率、精确率和召回率上分别达到96.49%、99.98%和99.84%,平均端到端处理时间为1.535秒。结论这项云服务系统在速度、准确性和可靠性上的提升展示了深度学习物体检测技术改进针灸实践的潜力。

关键词：人工智能电脑视觉目标检测针灸病人安全

Compressive properties of a novel slurry-infiltrated fiber concrete reinforced with arc-shaped steel fibers

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2023年第6期24卷 543-556页

作者： Hedong LI Yabiao LI Yunfeng PAN P.L.ng Christopher K.Y.leung Xin ZHAO School of Civil Engineering and Architecture Zhejiang Sci-Tech UniversityHangzhou 310018China Department of Civil Engineering The University of Hong KongHong Kong 999077China Faculty of Civil Engineering Vilnius Gediminas Technical UniversityVilnius LT-10223Lithuania Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China School of Civil Engineering and Architecture Zhejiang University of Science and TechnologyHangzhou 310023China

Slurry-infiltrated fiber concrete(SIFCON)is a sort of strain hardening cement-based composite material,typically made with 5%–20%steel *** study focused on a novel type of SIFCON in which hooked-end steel fibers were replaced by arc-shaped steel *** quasi-static compressive properties of the SIFCON were first *** results suggested that using arc-shaped steel fibers in lieu of hooked-end steel fibers increased the quasi-static compressive strength by 47.1%and the strain at peak stress by 56.3%.We attribute these improvements to new crack-resisting mechanisms,namely“fiber crosslock”,“dual bridging”,and“confinement loops”,when the arc-shaped steel fibers are introduced into *** high impact resistance is a special property of SIFCON that is of practical significance,the dynamic compressive properties of arc-shaped steel fiber SIFCON were studied by using an 80-mm-diameter split Hopkinson pressure bar(SHPB).The results showed that the dynamic compressive strength,dynamic increase factor(DIF),and dynamic toughness of SIFCON all increased with the strain *** SIFCON incorporating arc-shaped steel fibers proved to have significant advantages in structural applications requiring high impact resistance.

关键词： Slurry-infiltrated fiber concrete(SIFCON) Arc-shaped steel fiber Quasi-static compressive properties Spilt Hopkinson pressure bar(SHPB) Dynamic compressive properties

Diagnosis,treatment and prevention of severe acute respiratory syndrome coronavirus 2 infection in children:experts'consensus statement updatedforthe Omicron variant

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World Journal of Pediatrics 2024年第3期20卷 272-286页

作者： Rong-Meng Jiang Zheng-De Xie Yi Jiang Xiao-Xia Lu Run-Ming Jin Yue-Jie Zheng Yun-Xiao Shang Bao-Ping Xu Zhi-Sheng Liu Gen Lu Ji-Kui Deng Guang-Hua Liu Xiao-Chuan Wang Jian-She Wang Lu-Zhao Feng Wei Liu Yi Zheng sai-Nan Shu Min Lu Wan-Jun Luo Miao Liu Yu-Xia Cui Le-Ping Ye A-Dong Shen Gang Liu Li-Wei Gao Li-Juan Xiong Yan Bai Li-Kai Lin Zhuang Wei Feng-Xia Xue Tian-You Wang Dong-Chi Zhao Jian-Bo Shao Daniel Kwok-keung ng Gary Wing-kin Wong Zheng-Yan Zhao Xing-Wang Li Yong-Hong Yang Kun-Ling Shen Diagnosis and Treatment Center of Infectious Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Beijing Key Laboratory of Pediatric Respiratory Infection Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesResearch Unit of Critical Infection in ChildrenChinese Academy of Medical Sciences2019RU016Laboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China Department of Pediatrics Renmin Hospital of Wuhan UniversityWuhan 430060China Department of Respiratory Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Pediatrics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Respiratory Shenzhen Children's HospitalShenzhen 518038China Department of Pediatric Respiratory Shengjing Hospital Affiliated to China Medical UniversityShenyang 110004China Department of Respiratory Beijing Children's HospitalCapital Medical UniversityNational Clinical Research Center for Respiratory DiseasesNational Center for Children's HealthBeijing 100045China Department of Neurology Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Respiratory Guangzhou Women and Children's Medical CenterGuangzhou 510623China Department of Infectious Diseases Shenzhen Children's HospitalShenzhen 518038China Department of Pediatrics Fujian Branch of Shanghai Children's Medical CenterFujian Children's HospitalFuzhou350005China Department of Clinical Immunology and Allergy Children's Hospital of Fudan UniversityNational Center for Children's HealthShanghai 201102China Department of Infectious Diseases Children's Hospital of Fudan UniversityNational Center for Children's Health.Shanghai

It has been more than 3 years since the novel coronavirus(SARS-CoV-2)pandemic raged *** coronavirus disease 2019(COVID-19)has greatly influenced human *** to data from the World Health Organization(WHO),there were ove... 详细信息

关键词： prevention infection statement

Acupuncture for low back pain:a clinical practice guideline from the Hong Kong taskforce of standardized acupuncture practice

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Journal of Traditional Chinese Medicine 2022年第1期42卷 140-147页

作者： CHEN Haiyong YEUng Wing-Fai YAng Mingxiao MU Jinglan ZIEA Tat-Chi ng Bacon Fung-leung LAO Lixing School of Chinese Medicine University of Hong KongHong Kong SARChina School of Nursing Hong Kong Polytechnic UniversityHong Kong SARChina Bendheim Integrative Medicine Center Memorial Sloan Kettering Cancer Center1429 First AvenueNew York 10021USA Department of Anesthesiology Nanjing Drum Tower HospitalNanjing University Medical SchoolNanjing210008China Chinese Medicine Department Hong Kong Hospital AuthorityHong Kong SARChina Virginia University of Integrative Medicine FairfaxVA 22031USA

OBJECTIVE:To develop a clinical practice guideline to guide the treatment of low back pain by ***:An integrative approach of systematic review of literature,clinical evidence classification,expert opinion surveying,and consensus establishing via a Delphi program was utilized during the developing *** evidence-based practice standards and the personalized features of acupuncture were taken into ***:Based on clinical evidence and expert opinions,we developed a clinical practice guideline for the treatment of low back pain with *** recommendations have a wide coverage spanning from Western Medicine diagnosis and Traditional Chinese Medicine syndrome differentiation,to acupuncture treatment procedures,as well as post treatment care for rehabilitation and *** recommendations for acupuncture practice included treatment principles,therapeutic regimens,and operational *** levels of evidence and strength of recommendation were rated for each procedure of ***:A clinical practice guideline for acupuncture treating low back pain was developed based on contemporary clinical evidence and experts'consensus to provide best currently agreeable practice guideline for domestic and international stakeholders.

关键词： acupuncture low back pain diagnosis syndrome differentiation rehabilitation practice guideline

全自动固相萃取-液相色谱串联质谱法同时测定饮用水中21种有机磷酸酯及其代谢产物

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卫生研究 2024年第1期53卷 109-116,172页

作者：袁蕊崔霞佟晶丁文波范赛北京市东城区疾病预防控制中心北京100050 北京市疾病预防控制中心/北京市预防医学研究中心北京100013

目的建立一种全自动固相萃取-液相色谱串联质谱法同时测定饮用水中21种有机磷酸酯(organophosphate esters,OPEs)及其代谢产物的方法。方法饮用水加入内标后,采用HLB固相萃取柱,全自动固相萃取净化,甲醇洗脱,采用ACQUITY UPLC BEH(100 m... 详细信息

目的建立一种全自动固相萃取-液相色谱串联质谱法同时测定饮用水中21种有机磷酸酯(organophosphate esters,OPEs)及其代谢产物的方法。方法饮用水加入内标后,采用HLB固相萃取柱,全自动固相萃取净化,甲醇洗脱,采用ACQUITY UPLC BEH(100 mm×2.1 mm,1.7μm)色谱柱,液相色谱串联质谱法测定,内标法定量。结果优化后的方法可以同时检测饮用水中21种有机磷酸酯及其代谢产物,检出限为0.01~0.24 ng/L,定量限为0.03~0.77 ng/L,加标0.8~20 ng/L,回收率范围为57.6%~121.2%,相对标准偏差为1.2%~11.1%(n=6)。对17件市政末梢水及30件商超采集的包装饮用水进行测定,ΣOPEs范围为16.8~177 ng/L,Σdi-OPEs范围为0.328~16.3 ng/L,说明水体存在有机磷酸酯及其代谢产物的暴露风险。结论本法前处理自动化程度高、简单,灵敏度高,适用于大批量饮用水中有机磷酸酯及其代谢产物的同时高通量测定。

关键词：饮用水有机磷酸酯代谢产物液相色谱-串联质谱