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P(VDF-TrFE)膜悬空结构集成热释电线列研究

2011中国材料研讨会

作者： l.Sun,Y.wang,h.l.w.chan Department of Applied Physics and Materials Research Center,The hong Kong Polytechnic University

＜正＞In this work we have investigated the influence of microstructure on magnetoelectric （ME） coupling effects in magnetoelectric composites made of a ferroelectric （piezoelectric） and a

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压电与声光 2000年第2期22卷 104-106页

作者：李金华陈王丽华李坤蔡忠龙香港理工大学应用物理系及材料研究中心

用聚偏氟乙烯－三氟乙烯「Ｐ（ＶＤＦ－ＴｒＦＥ）」薄膜作１６＊１集成热释电线性阵列的敏感膜，经退火和７５ＫＶ／ｍｍ场强极化后测得其相对介电常数为１２．６，介电损耗约０．０１。为了降低热导和热容，提高探测器的探测灵敏度，... 详细信息

用聚偏氟乙烯－三氟乙烯「Ｐ（ＶＤＦ－ＴｒＦＥ）」薄膜作１６＊１集成热释电线性阵列的敏感膜，经退火和７５ＫＶ／ｍｍ场强极化后测得其相对介电常数为１２．６，介电损耗约０．０１。为了降低热导和热容，提高探测器的探测灵敏度，用ＫＯＨ作化学腐蚀完全去除了线性阵列下方的硅衬底，形成悬空结构。

关键词：集成热释电线阵列热释电传感器悬空结构

Optimizing distribution of multiple tuned mass dampers for building structures with inverse element exchange method

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 187-199页

作者： Peng-Tai chan Department of Marine Environment and Engineering Sun Yat-sen University(NSYSU)Kaohsiung 804TaiwanChina

Multiple tuned mass dampers(MTMDs)reduce dynamic response with multiple specified frequencies of building *** optimization algorithms for placement design exist,though they rarely conform to code-based verification nor produce high quality solutions without high computational effort and high *** study proposes an inverse element exchange method(IEEM)with multi-level programming and compares it to a single tuned mass damper(STMD)and uniform distribution of multiple tuned mass dampers in the frequency and time domains.A ten-story shear building is used for the numerical case *** results show that the proposed method can offer improvement over the STMD,uniform distribution of multiple tuned mass dampers,and distribution optimized by genetic algorithms(GA)with regard to minimizing the interstory drift ratio(IDR)in both the frequency and time domains and the time consumption for optimization.

关键词： tuned mass damper multiple tuned mass damper optimal damper placement design transfer function

Deep ResNet Strategy for the Classification of wind Shear Intensity Near Airport Runway

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1565-1584页

作者： Afaq Khattak Pak-wai chan Feng Chen Abdulrazak h.Almaliki Department of Civil Structural and Environmental EngineeringTrinity College DublinDublinD02 PN40Ireland hong Kong Observatory 134A Nathan RoadKowloonHong Kong999077China College of Transportation Engineering Tongji UniversityShanghai201804China Department of Civil Engineering College of EngineeringTaif UniversityTaif21944Saudi Arabia

Intense wind shear(I-wS)near airport runways presents a critical challenge to aviation safety,necessi-tating accurate and timely classification to mitigate risks during takeoff and *** study proposes the application of advanced Residual Network(ResNet)architectures including ResNet34 and ResNet50 for classifying I-wS and Non-Intense wind Shear(NI-wS)events using Doppler light Detection and Ranging(liDAR)data from hong Kong International Airport(hKIA).Unlike conventional models such as feedforward neural networks(FNNs),convolutional neural networks(CNNs),and recurrent neural networks(RNNs),ResNet provides a distinct advantage in addressing key challenges such as capturing intricate wS dynamics,mitigating vanishing gradient issues in deep architectures,and effectively handling class imbalance when combined with Synthetic Minority Oversampling Technique(SMOTE).The analysis results revealed that ResNet34 outperforms other models with a Balanced Accuracy of 0.7106,Probability of Detection of 0.8271,False Alarm Rate of 0.328,F1-score of 0.7413,Matthews Correlation Coefficient of 0.433,and Geometric Mean of 0.701,demonstrating its effectiveness in classifying I-wS *** findings of this study not only establish ResNet as a valuable tool in the domain of wS classification but also provide a reliable framework for enhancing operational safety at airports.

关键词： Aviation safety wind shear deep residual network Doppler liDAR

Dibutyl phthalate disrupts[Ca^(2+)]_(i),reactive oxygen species,[ph]_(i),protein kinases and mitochondrial activity,impairing sperm function

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Journal of Environmental Sciences 2025年第5期151卷 68-78页

作者： Seung hyun Park Myung chan Gye Department of life Science and Institute for Natural Sciences Hanyang UniversitySeoul 04763Republic of Korea

To explore the mechanism of sperm dysfunction caused by dibutyl phthalate(DBP),the effects of DBP on intracellular[Ca^(2+)]and[ph],reactive oxygen species(ROS),lipid peroxidation(lPO),mitochondrial permeability transition pore(mPTP)opening,mitochondrial membrane potential(MMP),adenosine triphosphate(ATP)levels,phosphorylation of protein kinase A(PKA)substrate proteins and phosphotyrosine(p-Tyr)proteins,sperm motility,spontaneous acrosome reaction,and tail bending were examined in mouse *** 100μg/ml,DBP significantly increased tail bending and[Ca^(2+)]***,DBP showed biphasic effects on[ph]*** at 10–100μg/ml significantly decreased sperm ***,Ca^(2+)ionophore A23187 decreased[ph]_(i)sperm motility,suggesting that DBP-induced excessive[Ca^(2+)]_(i)decreased sperm *** significantly increased ROS and *** at 100μg/ml significantly decreased mPTP closing,MMP,and ATP levels in spermatozoa,as did h2O2,indicative of ROS-mediatedmitochondrial dysfunction caused by *** as well as h2O2 increased p-Tyr sperm proteins and phosphorylated PKA substrate sperm *** at 1–10μg/ml significantly increased the spontaneous acrosome reaction,suggesting that DBP can activate sperm ***,DBP showed a biphasic effect on intracellular signaling in *** concentrations relevant to seminal ortho-phthalate levels,DBP activates[ph]i,protein tyrosine kinases and PKA via physiological levels of ROS generation,potentiating sperm *** at high doses excessively raises[Ca^(2+)]_(i)and ROS and disrupts[ph]i,impairing the mitochondrial function,tail structural integrity,and sperm motility.

关键词： Dibutyl phthalate Reactive oxygen species(ROS) [Ca^(2+)]_(i) [ph]_(i) Mitochondria Protein kinases Sperm

CaRuO_3电极对(Ba,Sr)TiO_3薄膜的介电特性的影响

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功能材料与器件学报 2007年第3期13卷 266-270页

作者：熊惠芳唐新桂易双萍范仰才蒋力立陈王丽华广东工业大学物理与光电工程学院广州510090 广东工业大学试验中心广州510090 香港理工大学应用物理系

在Pt（111）/Ti/SiO2/Si（100）衬底上,用脉冲激光沉积工艺分别制备出了（110）外延取向生长的（Ba0.65Sr0.35）TiO3/CaRuO3（BST/CRO）异质结构薄膜;BST/CRO异质结构薄膜由纳米晶团簇组成,最大的团簇晶粒达500 nm,平均晶粒尺寸在60～80... 详细信息

在Pt（111）/Ti/SiO2/Si（100）衬底上,用脉冲激光沉积工艺分别制备出了（110）外延取向生长的（Ba0.65Sr0.35）TiO3/CaRuO3（BST/CRO）异质结构薄膜;BST/CRO异质结构薄膜由纳米晶团簇组成,最大的团簇晶粒达500 nm,平均晶粒尺寸在60～80 nm,薄膜厚度为650 ***/CRO异质结薄膜均为表面平滑和致密结构.BST/CRO异质结薄膜的介电常数和介电调谐率分别高达851和78.1%.与纯BST薄膜比较,用CRO作电极,增益介电常数与介电调谐率.

关键词：脉冲激光沉积钛酸锶钡薄膜异质结构介电调谐率

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钛酸锶钡溶胶制备研究

江苏石油化工学院学报 2000年第1期12卷 1-4页

作者：李坤陈王丽华蔡忠龙李金华江苏石油化工学院功能材料实验室江苏常州213016 香港理工大学应用物理系智能材料研究中心

用锶、钡的有机酸盐和钛酸丁酯为原料 ,以溶胶 -凝胶法制备了钛酸锶钡溶胶。考察了有机酸分子量、溶胶的水解方法对溶胶亲润性、湿敏性、二氧化碳敏感性、成膜均匀性、热解性等的影响。实验得出 :先将钛酸丁酯的乙酸乙酯溶液部分水解 ,... 详细信息

用锶、钡的有机酸盐和钛酸丁酯为原料 ,以溶胶 -凝胶法制备了钛酸锶钡溶胶。考察了有机酸分子量、溶胶的水解方法对溶胶亲润性、湿敏性、二氧化碳敏感性、成膜均匀性、热解性等的影响。实验得出 :先将钛酸丁酯的乙酸乙酯溶液部分水解 ,然后与锶、钡的正辛酸盐、 2 -乙基己酸盐或壬酸盐的乙酸乙酯溶液充分混合 ,所得的溶胶具有较好的综合性能。

关键词：溶胶-凝胶法薄膜钛酸锶钡陶瓷

liver transplantation for hepatocellular carcinoma: Current status in hong Kong, China

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hepatobiliary & Pancreatic Diseases International 2025年第1期24卷 45-49页

作者： Karin ho Albert chan liver Transplant Center Queen Mary HospitalDepartment of SurgeryThe University of Hong KongHong KongChina

with the advances in transplant oncology in recent years, the role of liver transplantation has expanded to make curative treatment a possibility for a wider patient population. we highlight strategies in hong Kong, China that have enabled preoperative prognostication for judicious patient selection, downstaging therapy to definitive treatment, and postoperative therapies that have provided a growing role for liver transplantation in patients with more advanced hepatocellular carcinoma.

关键词： living donor liver transplantation Downstaging Conversion therapy Transplant oncology

Consumer products are important reservoirs and sources of organophosphate tri-esters and di-esters:Characteristics,mass inventory,and implication for waste management

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Journal of Environmental Sciences 2025年第5期151卷 550-559页

作者： Jie Zhou chan liang Jinyun li Jiayi Gu Amina Salamova liangying liu Guangdong Key laboratory of Environmental Pollution and health School of EnvironmentJinan UniversityGuangzhou 511443China Gangarosa Department of Environmental health Rollins School of Public HealthEmory UniversityGeorgia 30322USA

Numerous studies documented the occurrence of organophosphate tri-esters(tri-OPEs)and di-esters(di-OPEs)in the *** information is available on their occurrence in waste consumer products,reservoirs and sources of these *** study collected and analyzed 92 waste consumer products manufactured from diverse polymers,including polyurethane foam(PUF),polystyrene(PS),acrylonitrile butadiene styrene(ABS),polypropylene(PP),and polyethylene(PE)to obtain information on the occurrence and profiles of 16 tri-OPEs and 10 *** concentrations of di-OPEs(18−370,000 ng/g,median 1,700 ng/g)were one order of magnitude lower than those of tri-OPEs(94−4,500,000 ng/g,median 5,400 ng/g).The concentrations of both tri-and di-OPEs in products made of PUF,PS,and ABS were orders of magnitude higher than those made of PP and *** compositional patterns of OPEs varied among different polymer types but were generally dominated by bisphenol A bis(diphenyl phosphate),triphenyl phosphate,tris(1-chloro-2-propyl)phosphate,di-phenyl phosphate(DPhP),and bis(2-ethylhexyl)*** industrially applied di-OPEs(di-n-butyl phosphate and DPhP)exhibited higher levels than their respective tri-OPEs,contrary to their production *** non-industrially applied chlorinated di-OPEs were also detected,with concentrations up to 97,000 ng/*** findings suggest that degradation of tri-OPEs during the manufacturing and use of products is an important source of *** mass inventories of tri-OPEs and di-OPEs in consumer products were estimated at 3,100 and 750 tons/year,*** study highlights the importance of consumer products as emission sources of a broad suite of OPEs.

关键词： Organophosphate tri-esters Organophosphate di-esters waste consumer products Source assessment Mass inventory