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Morphologies and Superhydrophobicity of Hybrid Film Surfaces Based on Silica and Fluoropolymer

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Journal of Materials Science & Technology 2008年第5期24卷 693-699页

作者： Ailan qu Xiufang wen Pihui PI Jiang CHENG Zhuoru YANG School of-Chemical and Energy Engineering South China University of Technology Guangzhou 510640 China

Fluoropolymer and different kinds of silica particles were used for controlling surface chemistry and morphology, respectively. A superhydrophobic surface originated from strawberry-like or quincunx-shaped composite silica particles was obtained. The dual size particles are obtained by utilizing the graft of different modified silica particles with epoxy functional group and amine functional group, This makes the surface of film form a composite interface to have irregular binary structure which plays an essential role in trapping air between the substrate surface and the liquid droplets to be necessary for high contact angle and low contact angle hysteresis. The maximum contact angle for water on the hybrid film is about 174±2° and the contact angle hysteresis is less than 2°. The surface morphologies, roughness and the wettability on the surface of films containing different structural silica particles were compared. It was shown that the hierarchical irregularly structure with a low roughness factor and high air-trapped ratio is indispensable for superhydrophobic surface. Although this structural surfaces based on composite silica particles play a vital role in governing the surface wettability, it is necessary to combine with a low surface energy to make the surface superhydrophobic.

关键词： Superhydrophobicity Hierarchical irregularly structure Silica particles Fluoropolymer

A novel cross-modal hashing algorithm based on multimodal deep learning

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Science China(Information Sciences) 2017年第9期60卷 50-63页

作者： wen qu Daling WANG Shi FENG Yifei ZHANG Ge YU School of Information Science and Engineering Northeastern University Key Laboratory of Medical Image Computing

With the growing popularity of multimodal data on the Web, cross-modal retrieval on large-scale multimedia databases has become an important research topic. Cross-modal retrieval methods based on hashing assume that there is a latent space shared by multimodal features. To model the relationship among heterogeneous data, most existing methods embed the data into a joint abstraction space by linear projections. However,these approaches are sensitive to noise in the data and are unable to make use of unlabeled data and multimodal data with missing values in real-world applications. To address these challenges, we proposed a novel multimodal deep-learning-based hash(MDLH) algorithm. In particular, MDLH uses a deep neural network to encode heterogeneous features into a compact common representation and learns the hash functions based on the common representation. The parameters of the whole model are fine-tuned in a supervised training *** on two standard datasets show that the method achieves more effective results than other methods in cross-modal retrieval.

关键词： hashing cross-modal retrieval cross-modal hashing multimodal data analysis deep learning

Semantic movie summarization based on string of IE-Role Nets

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Computational Visual Media 2015年第2期1卷 129-141页

作者： wen qu Yifei Zhang Daling Wang Shi Feng Ge Yu School of Information Science and Engineering Northeastern University Key Laboratory of Medical Image Computing(Northeastern University) Ministry of Education

Roles, their emotion, and interactions between them are three key elements for semantic content understanding of movies. In this paper, we proposed a novel movie summarization method to capture the semantic content in movies based on a string of IE-Role Nets. An IE-Role Net(interaction and emotion rolenet) models the emotion and interactions of roles in a shot of the movie. The whole movie is represented as a string of IE-Role Nets. Summarization of a movie is transformed into finding an optimal substring with user-specified summarization *** substring mining is conducted to find an optimal substring of the whole movie. We have conducted objective and subjective experiments on our method. Experimental results show the ability of our method to capture the semantic content of movies.

关键词： movie summarization content analysis movie understanding

Tri-level programming model for combined urban traffic signal control and traffic flow guidance

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Journal of Central South University 2016年第9期23卷 2443-2452页

作者： SUN Zhi-yuan LU Hua-pu qu wen-cong Institute of Transportation Engineering Tsinghua University Beijing 100084 China College of Metropolitan Transportation Beijing University of Technology Beijing 100124 China

In order to balance the temporal-spatial distribution of urban traffic flow, a model is established for combined urban traffic signal control and traffic flow guidance. With consideration of the wide use of fixed signal control at intersections, traffic assignment under traffic flow guidance, and dynamic characteristics of urban traffic management, a tri-level programming model is presented. To reflect the impact of intersection delay on traffic assignment, the lower level model is set as a modified user equilibrium model. The middle level model, which contains several definitional constraints for different phase modes, is built for the traffic signal control optimization. To solve the problem of tide lane management, the upper level model is built up based on nonlinear 0-1 integer programming. A heuristic iterative optimization algorithm(HIOA) is set up to solve the tri-level programming model. The lower level model is solved by method of successive averages(MSA), the middle level model is solved by non-dominated sorting genetic algorithm II(NSGA II), and the upper level model is solved by genetic algorithm(GA). A case study is raised to show the efficiency and applicability of the proposed modelling and computing method.

关键词： traffic engineering traffic signal control traffic flow guidance tri-level programming model

Research on Computer Simulation System of Stretch Reducing Mill for Tube

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Journal of Iron and Steel Research International 2003年第1期10卷 24-27页

作者： XUE Zhong-ming qu wen-qing ZHANG Yan-hua LI Shu-chun Beijing University of Aeronautics and Astronautics Beijing Institute of Mechanical Industry

The prototype,basic parameters,composition and structure of computer simulation system of stretch reducing mill for tubes were *** software has an obvious style of object-oriented programming,and the modules were integrated in the simulation *** system can optimize pass design,and it can automatically classify pass series according to the product syllabus,formulate the rolling table and simulate the rolling parameters in stretch reducing *** simulation results were compared with the detailed technical data(used as experimental data) provided by Baotou Iron and Steel Company,and the comparison gave a clear proof of the precision of the models.

关键词： tube stretch reducing mill pass design force parameter simulation

Comparison of fractal measures

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Science China Mathematics 2005年第11期48卷 1545-1553页

作者： qu Yanhui,wen Shengyou & wen Zhiying Department of Mathematics,Tsinghua University,Beijing 100084,China Department of Mathematics,Hubei University, Wuhan 430062, China 1. Department of Mathematics Tsinghua University 100084 Beijing China 2. Department of Mathematics Hubei University 430062 Wuhan China

In this paper, the relationship between the s-dimensional Hausdorff measures and the g-measures in Rd is discussed, where g is a gauge function which is equivalent to ts and 0 < s≤d. It shows that if s=d, then Hg = c1Hd, Cg = c2Cd and Pg = c3Pd on Rd, where constants c1, c2 and c3 are determined by where Wg, Cg and Pg are the g-Hausdorff, g-central Hausdorff and g-packing measures on Rd respectively. In the case 0

关键词： gauge function Hausdorff measure central Hausdorff measure packing measure.

Feasibility and safety of single-incision laparoscopic cholecystectomy versus conventional laparoscopic cholecystectomy in an ambulatory setting

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Hepatobiliary & Pancreatic Diseases International 2019年第3期18卷 273-277页

作者： Jun-wen qu Cheng Xin Gui-Yang Wang Zhi-Qing Yuan Ke-Wei Li Department of Biliary-Pancreatic Surgery Renji Hospital School of Medicine Shanghai Jiao Tong University

Background: Single-incision laparoscopic surgery has emerged as an alternative to conventional laparoscopic cholecystectomy(LC) in the clinical setting. Limited information is available on the possibility of performing single-incision laparoscopic surgery as an ambulatory procedure. This study aimed to determine the feasibility and safety of single-incision laparoscopic cholecystectomy(SILC) versus conventional LC in an ambulatory setting. Methods: Ninety-one patients were randomized to SILC( n = 49) or LC( n = 42). The success rate, operative duration, blood loss, hospital stay, gallbladder perforation, drainage, delayed discharge, readmission, total cost, complications, pain score, vomiting, and cosmetic satisfaction of the two groups were then compared. Results: There were significant differences in the operative time(46.89 ± 10.03 min in SILC vs. 37.24 ± 10.23 min in LC;P 0.05). Conclusions: Ambulatory SILC is safe and feasible for selected patients. The advantages of SILC as compared with LC are improved cosmetic satisfaction and lower total costs.

关键词： Ambulatory Single incision Laparoscopic cholecystectomy Feasibility Safety

Analysis of Early Essential Newborn Care Capacities of Rural Health Facilities--Four Provinces in Western China, 2016

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China CDC weekly 2020年第1期2卷 8-12页

作者： Tao Xu wen qu Yan Wang Qing Yue Xiaona Huang Xiaobo Tian National Center for Women and Children’s Health Chinese Center for Disease Control and PreventionBeijingChina UNICEF China BeijingChina.

What is already known about this topic?The Early Essential Newborn Care(EENC)intervention package recommended by World Health Organization(WHO)is shown to prevent and treat the leading causes of newborn illness and *** has begun widespread implementation of the *** is added by this report?Among the 14 core interventions,including using antibiotics for mothers with premature rupture of membranes,immediate skin-to-skin contact of mother and baby,delayed umbilical cord clamping,kangaroo mother care for preterm newborn,and neonatal sepsis and pneumonia management,were not sufficiently implemented in health facilities in western *** are the implications for public health practice?There are gaps between the implementation situation and WHO recommendations in terms of EENC capacities in western *** interventions developed accordingly can ensure quality child health care and decrease newborn mortality in China.

关键词： mother Rural Health

Pancreatic cancer:A review of epidemiology,trend,and risk factors

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World Journal of Gastroenterology 2021年第27期27卷 4298-4321页

作者： Jian-Xiong Hu Cheng-Fei Zhao wen-Biao Chen Qi-Cai Liu qu-wen Li Yan-Ya Lin Feng Gao Intensive Care Unit(ICU) Affiliated Hospital of Putian UniversityPutian 351100Fujian ProvinceChina School of Pharmacy and Medical Technology Putian UniversityPutian 351100Fujian ProvinceChina Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine in University of Fujian Province Putian UniversityPutian 351100Fujian ProvinceChina Department of Basic Medicine Quanzhou Medical CollegeQuanzhou 362011Fujian ProvinceChina Department of Reproductive Medicine Centre First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005Fujian ProvinceChina Department of Priority Laboratory for Zoonoses Research Fujian Center for Disease Control and PreventionFuzhou 350001Fujian ProvinceChina Department of Pathology First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005Fujian ProvinceChina

Despite rapid advances in modern medical technology and significant improvements in survival rates of many cancers,pancreatic cancer is still a highly lethal gastrointestinal cancer with a low 5-year survival rate and difficulty in early *** present,the incidence and mortality of pancreatic cancer are increasing year by year worldwide,no matter in the United States,Europe,Japan,or ***,the incidence of pancreatic cancer is projected to increase to 18.6 per 100000 in 2050,with the average annual growth of 1.1%,meaning that pancreatic cancer will pose a significant public health *** to the special anatomical location of the pancreas,the development of pancreatic cancer is usually diagnosed at a late stage with obvious clinical ***,a comprehensive understanding of the risk factors for pancreatic cancer is of great clinical significance for effective prevention of pancreatic *** this paper,the epidemiological characteristics,developmental trends,and risk factors of pancreatic cancer are reviewed and analyzed in detail.

关键词： Pancreatic cancer Epidemiology Trend Risk factors Pancreatic ductal adenocarcinoma