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High-speed 3D imaging based on structured illumination and electrically tunable lens

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Chinese Optics Letters 2017年第9期15卷 12-15页

作者： Dongping Wang Yunlong Meng Dihan Chen yeung yan Shih-Chi Chen Department of Mechanical and Automation Engineering The Chinese University of Hong KongShatinHong Kong SARChina Shenzhen Research Institute The Chinese University of Hong KongShenzhen 518057China

In this Letter, we present a high-speed volumetric imaging system based on structured illumination and an electrically tunable lens（ETL）, where the ETL performs fast axial scanning at hundreds of Hz. In the system,a digital micro-mirror device（DMD） is utilized to rapidly generate structured images at the focal plane in synchronization with the axial scanning unit. The scanning characteristics of the ETL are investigated theoretically and experimentally. Imaging experiments on pollen samples are performed to verify the optical cross-sectioning and fast axial scanning capabilities. The results show that our system can perform fast axial scanning and threedimensional（3D） imaging when paired with a high-speed camera, presenting an economic solution for advanced biological imaging applications.

关键词： ETL High-speed 3D imaging based on structured illumination and electrically tunable lens

Reduction of the ages at diagnosis and operation of biliary atresia in Taiwan: A 15-year population-based cohort study

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World Journal of Gastroenterology 2015年第46期21卷 13080-13086页

作者： Jen-Shyang Lin Solomon Chih-Cheng Chen Chin-Li Lu Hung-Chang Lee Chun-yan yeung Wai-Tao Chan Department of Pediatrics Ditmanson Medical Foundation Chia-Yi Christian Hospital Department of Pediatric Gastroenterology Mac Kay Children’s Hospital Department of Pediatrics School of MedicineTaipei Medical University Department of Public Health College of MedicineNational Cheng Kung University

AIM: To describe the ages at diagnosis and operation of biliary atresia(BA) and its incidence over a 15-year period in ***: This was a population-based cohort study. BA cases were identified from the Taiwan National Health Insurance Research Database based on the International Classification of Diseases,Ninth Revision(ICD-9) code of BA 751.61 plus Kasai operation(ICD-9 procedure code 51.37) or liver transplantation(LT,ICD-9 procedure code 50.5). The patients' characteristics including sex,age at diagnosis,age at receiving Kasai operation and age at receiving LT were compared among three birth cohorts:(1) 1997 to 2001;(2) 2002 to 2006; and(3) 2007 to ***: There were a total of 540 BA cases(275 females) with an incidence of 1.62 per 10000 live births. No seasonality of BA was noted. The mean ages at diagnosis of three cohorts were 57.9,55.6 and 52.6 d.A linear regression model demonstrated a decreasing trend of the mean age at diagnosis(1.27 d per year). The proportion of BA cases that received the Kasai operation within 60 d of age increased from 76% to 81%. A total of 189(35%) BA patients underwent LT. The mean age at LT was reduced from 3-year-old to 1-year-old. The rates of LT were 25.6% and 32.3% in patients who received the Kasai operation within 60 d or after 60 d of age,respectively. All patients who did not undergo a Kasai operation eventually required ***: The ages at diagnosis and operation in BA cases have decreased over time. Kasai operation performed at younger age reduces the need for LT. The incidence of BA in Taiwan fluctuates,but without certain trend.

关键词： Age Biliary atresia Kasai operation Stool color ca

External Involvement and New Product Performance:Assessing the Mediating Role of Manufacturing Involvement

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External Involvement and New Product Performance:Assessing t...

Vertical transmission of hepatitis C virus: Current knowledge and perspectives

The Seventh International Conference on Information and Management Sciences

作者： Jeff Hoi yan yeung Department of Decision Sciences and Managerial Economics Faulty of Business Administration The Chinese University of Hong Kong Shatin N.T.Hong Kong

＜正＞New product development（NPD）is very important for a company’s growth and ***, there is great risk in new product development because of the complexity of managing the process of new product development and high probability of ***,great efforts from internal（manufacturing,marketing,R＆D,etc.） and external（customer and supplier）are needed to enhance the new product performance,internal and external involvement in new product development（NPD）and their impacts on new product performance have been investigated Past literature mostly focused on the direct benefits from internal and external involvement in *** is lack of studies that focused on the relationship between the internal and external involvement in NPD. Although the increasing interest in the supplier and customer involvement in new product development by practitioners and academicians,seldom is known about their influence on new product performance through manufacturing *** on organizational learning the tory,we proposed that manufacturing involvement would act as external knowledge assimilation mechanism in the external learning *** study investigated the effect of customer and supplier involvement on manufacturing involvement,and on new product performance in terms of cost and *** were collected from 260 manufacturing firms in 9 countries for the third round HPM（High Performing Manufacturing） *** our results indicated that supplier and customer involvement has significant impact on manufacturing involvement,and manufacturing involvement mediates the relationship between external involvement and new product performance.

关键词： customer and supplier involvement manufacturing involvement new product development

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World Journal of Hepatology 2014年第9期6卷 643-651页

作者： Chun-yan yeung Hung-Chang Lee Wai-Tao Chan Chun-Bin Jiang Szu-Wen Chang Chih-Kuang Chuang Department of Medicine Mackay Medical College Division of Gastroenterology and Nutrition Department of PediatricsMackay Memorial Hospital Institute of Biotechnology and Department of Chemical Engineering National Taipei Uni-versity of Technology Department of Pediatrics Taipei Medical University Department of Nursing Mackay Junior College of MedicineNursing and Management Department of Medical Research Mackay Memorial Hospital College of Medicine Fu-Jen Catholic University

Hepatitis C virus(HCV) infection is a major global health *** by the HCV can cause acute and chronic liver diseases and may lead to cirrhosis,hepatocellular carcinoma or liver *** World Health Organization estimates that approximately 3% of the world population have been infected with HCVand the worldwide prevalence is between 1% and 8% in pregnant women and between 0.05% and 5% in *** the introduction of blood product screening,vertical transmission becomes the leading cause of childhood HCV *** prevalence of pediatric HCV infection varies from 0.05% to 0.36% in developed countries and between 1.8% and 5% in the developing *** children born to women with antiHCV antibodies should be checked for HCV *** universal screening is controversial,selective antenatal HCV screening on high-risk populations is highly recommended and should be tested *** risk factors were shown to increase the possibility of HCV vertical transmission,including coinfections with human immunodeficiency virus,intravenous drug use and elevated maternal HCV viral load,while breastfeeding and HCV genotypes have been studied to have little *** present,no clinical intervention has been clearly studied and proved to reduce the HCV vertical transmission *** section should not be recommended as a procedure to prevent vertical transmission,however,breastfeeding is generally not *** high prevalence of global HCV infection necessitates renewed efforts in primary prevention,including vaccine development,as well as new approaches to reduce the burden of chronic liver *** researches should focus on the interruption of vertical transmission,developments of HCV vaccine and directacting antivirals in infancy and early childhood.

关键词： Hepatitis C virus Vertical transmission Perinatal infection Chronic liver disease

Status of bone quality in adolescent idiopathic scoliosis patients with low bone mass-using calcaneal quantitative ultrasound

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Status of bone quality in adolescent idiopathic scoliosis pa...

ISH2007国际浴室设备、楼宇、能源、空调技术及再生能源展览回顾

International Conference on Osteoporosis and Bone Research 2008

作者： Vivian Wing-yin Hung Hiu-yan yeung Jack Chun-yiu Cheng Department of Orthopaedics and Traumatology The Chinese University of Hong KongHong KongChina

＜正＞Quantitative ultrasound （QUS）,a radiation free densitometer,has been widely used in assessing the quality of bone *** published data showed that about 30% Adolescent Idiopathic Scoliosis （AIS） girls have lower bone mineral density （BMD） as compared with their ***,only a few studies on the structural and

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建筑技术及设计 2007年第4期 20-23页

作者： yan yeung

ISH2007国际浴室设备、楼宇、能源、空调技术及再生能源展览会在3月6—10日于德国法兰克福展览中心举行。来自58个国家和地区的2392家参展商在占地254000平方米的展厅中展出他们的创新产品，而此次展会入场观众人数达215378人次，据调... 详细信息

ISH2007国际浴室设备、楼宇、能源、空调技术及再生能源展览会在3月6—10日于德国法兰克福展览中心举行。来自58个国家和地区的2392家参展商在占地254000平方米的展厅中展出他们的创新产品，而此次展会入场观众人数达215378人次，据调查这次展览中除德国以外，观众数量前十位的欧洲国家是意大利、英国、荷兰、比利时、波兰、奥地利、瑞士、法国、西班牙和捷克。海外观众主要来自亚洲和北美，包括美国、加拿大、韩国、日本和中国。下届ISH展览会将于2009年3月10至14日在德国法兰克福举行。

关键词：再生能源展览中心浴室设备空调技术国际楼宇德国法兰克福创新产品

特发性脊柱侧凸患者脊柱畸形段凸侧及凹侧关节突松质骨三维微结构比较

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中华外科杂志 2005年第12期43卷 777-780页

作者：杨晓恩朱锋邱勇唐盛平秦岭李广文郑振耀香港中文大学医学院矫形外科及创伤学系南京大学医学院附属鼓楼医院脊柱外科深圳市儿童医院小儿外科香港中文大学医学院利希慎临床医学研究实验室

目的比较青少年特发性脊柱侧凸(AIS)患者脊柱畸形顶椎区和端椎区两侧关节突松质骨的三维微结构。方法AIS患者9例,均为女性,年龄12～17岁,平均14.9岁;Cobb角48°～84°,平均56°。患者均接受后路矫形融合内固定手术,术前与患者家长签署... 详细信息

目的比较青少年特发性脊柱侧凸(AIS)患者脊柱畸形顶椎区和端椎区两侧关节突松质骨的三维微结构。方法AIS患者9例,均为女性,年龄12～17岁,平均14.9岁;Cobb角48°～84°,平均56°。患者均接受后路矫形融合内固定手术,术前与患者家长签署同意书,在去皮质手术时取下顶椎区和上下端椎区两侧关节突。标本取材后用中性福尔马林固定,然后用解像度为20μm的微焦点CT扫描,三维图像重组进行骨形态计量学测量对比。结果顶椎区凸侧与凹侧相比有显著差异,分别为:骨量容积比BV/TV为0.268/0.354(P<0.05),骨小梁厚度TbTh为0.20/0.24(P<0.05),骨小梁分离度TbSP为0.66/0.56(P<0.05),骨小梁面积体积比BS/BV为12.7/10.4,P<0.05)。端椎区左右两侧关节突松质骨骨小梁无明显差异,上胸椎和胸腰椎关节突骨小梁微结构比较未见差异。结论由于脊柱侧凸凹侧承受不同应力,凹侧关节突出现更多的骨小梁,骨小梁间的连接更紧密,而且骨小梁更粗,从而可使脊椎楔形变的速度变缓,提示脊柱的骨骼本身并不是AIS脊柱侧凸畸形进展的促进因素。

关键词：脊柱畸形微结构松质骨青少年特发性脊柱侧凸福尔马林固定骨形态计量学脊柱侧凸畸形 Cobb角内固定手术骨小梁面积腰椎关节突顶椎区患者家长 CT扫描三维图像促进因素 AIS 两侧同意书手术时微焦点分离度

Performance of ground penetrating radar in root detection and its application in root diameter estimation under controlled conditions

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Science China Earth Sciences 2016年第1期59卷 145-155页

作者： yeung Shan Wing yan Wai Man HAU Chi Hang Billy Department of Civil Engineering The University of Hong Kong Kadoorie Institute The University of Hong Kong

A plant is stabilized by its root system. In congested urban cities such as Hong Kong, ground trenching is frequently seen due to the installation of utility lines along the roadside. Soil nailing, which involves soil coring in slopes, is a common solution to improve the slope stability. However, both activities inevitably pose a risk to the integrity of any root sys- tems present, and thus reduce the root anchorage. To prevent or minimize such damage, a careful design of the excava- tion/drilling location is of prime importance. Ground penetrating radar （GPR） provides a non-destructive method for locating roots by examining the contrast between the dielectric properties of the roots and the surrounding soil. To examine the perfor- mance of GPR and promote its use in Hong Kong, a test bed was prepared using local materials to create a controlled envi- ronment in which to conduct a series of systematic tests evaluating the performance of a 900 MHz GPR. The reflected radar- grams were subject to the influence of the following factors： size and depth of roots, horizontal distance between roots, and contrast between the root and soil water content. Correlations between root size and a number of waveform parameters were also explored. Limiting values for root size, root embedded depth, horizontal separation distance between roots, and water content contrast between root and soil were obtained. A significant correlation was found between the root diameter and time travel parameter T2 （p〈0.001, t=0.795）. Because GPR root detection is highly site-specific, this study provides a local refer- ence for GPR performance in the Hong Kong environment. The findings demonstrate that the 900 MHz GPR is applicable in Hong Kong for the detection of main roots.

关键词： GPR Radar profile Root detection Root water content Root size

褪黑素受体1A基因多态性与青少年特发性脊柱侧凸相关性研究

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中华外科杂志 2007年第18期45卷 1264-1266页

作者：邱旭升邓亮生杨晓恩郭凯琪李广文秦岭邱勇郑振耀南京大学医学院附属鼓楼医院脊柱外科 210008 香港中文大学病理化学系香港中文大学医学院矫形外科及创伤学系香港中文大学医学院利希慎临床医学研究实验室

目的研究褪黑素受体1A基因(MTNR1A)多态性与青少年特发性脊柱侧凸(AIS)发生发展的关系。方法共纳入226例 AIS 患者及277例正常对照者。记录 AIS 患者组最大 Cobb 角。采用 PCR-RFLP 的方法对 MTNR1A 基因启动子区域多态性位点 rs211988... 详细信息

目的研究褪黑素受体1A基因(MTNR1A)多态性与青少年特发性脊柱侧凸(AIS)发生发展的关系。方法共纳入226例 AIS 患者及277例正常对照者。记录 AIS 患者组最大 Cobb 角。采用 PCR-RFLP 的方法对 MTNR1A 基因启动子区域多态性位点 rs2119882进行基因分型。结果AIS 患者组 MTNR1A 基因多态性位点 rs2119882的基因型及等位基因分布与正常对照组比较没有明显差异。在 AIS 组内,多态性位点 rs2119882不同基因型所对应的最大 Cobb 角没有明显差异。结论MTNR1A 基因 rs2119882位点多态性与 AIS 的发生发展都没有关系。

关键词：脊柱侧凸褪黑素受体1A 基因多态性