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Control on Crystal Forms of Ultrafine Barium Carbonate Particles and Study on its Mechanism

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Chinese Journal of Structural Chemistry 2005年第11期24卷 1290-1297页

作者： HUO Ji-Chuan LIU Shu-Xin YANG ding-ming wang Hai-Bin Institute of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 China

Barium carbonate particles were prepared by using homogeneous precipitation method and co-precipitation method respectively. Through adding different crystalline controlling modifiers, Barium carbonate particles in five different shapes including linear, needle-like, pillarlike, sphere-like and dumbbell-like were synthesized. These particles were characterized by SEM and XRD, and their synthetic mechanism was discussed in this paper.

关键词： barium carbonate crystalline controlling synthesis mechanism

Comparison of laparoscopic vs open liver lobectomy(segmentectomy) for hepatocellular carcinoma

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World Journal of Gastroenterology 2011年第42期17卷 4725-4728页

作者： Ben-Shun Hu Ke Chen Hua-Min Tan Xiang-ming ding Jing-wang Tan Hepato-bilio-pancreatic Surgery Department Northern Jiangsu People＇s Hospital Yangzhou 225001 Jiangsu Province China Hua-Min Tan General Surgery Department Fuzhou General Hospital of Nanjing Military Command Fuzhou 350000 Fujian Province China

AIM:To investigate the effects of laparoscopic hepatectomy for the treatment of hepatocellular carcinoma(HCC) .METHODS:From 2006 to January 2011,laparoscopic hepatectomies were performed on 30 cases of HCC at Northern Jiangsu People's Hospital. During this sametime period,30 patients elected to undergo conventional open hepatectomy over laparoscopic hepatectomy at the time of informed consent. The degree of invasiveness and outcomes of laparoscopic hepatectomy compared to open hepatectomy for HCC were ***:Both groups presented with similar bloodloss amounts,operating times and complications. Patients in the laparoscopic hepatectomy group started walking and eating significantly earlier than those inthe open hepatectomy group,and these more rapid recoveries allowed for shorter hospitalizations. There were no significant differences between procedures insurvival ***:Laparoscopic hepatectomy is beneficial for patient quality of life if the indications are appropriately based on preoperative liver function and the location and size of the HCC.

关键词： Laparoscopy Hepatocellular carcinoma Liver resection Liver Iobectomy

In-situ pressure-preserved coring for deep exploration:Insight into the rotation behavior of the valve cover of a pressure controller

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Petroleum Science 2023年第4期20卷 2386-2398页

作者： Da Guo He-Ping Xie Ling Chen Zhong-Ya Zhou He-Ping Lu Lin Dai ding-ming wang Tian-Yu wang Ju Li Zhi-Qiang He Yun-Qi Hu ming-Zhong Gao School of Mechanical Engineering Sichuan UniversityChengduSichuan610065China MOE Key Laboratory of Deep Underground Science and Engineering College of Water Resource and HydropowerSichuan UniversityChengduSichuan610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyCollege of Civil and Transportation EngineeringShenzhen UniversityShenzhenGuangdong518060China Petroleum Engineering Technology Research Institute of Sinopec Jianghan Oilfield Company WuhanHubei430035China

In-situ pressure-preserved coring(IPP-Coring)is considered to be the most reliable and efficient method for the identification of the scale of oil and gas *** IPP-Coring,because the rotation behavior of the pressure controller valve cover in different medium environments is unclear,interference between the valve cover and inner pipe may occur and negatively affect the IPP-Coring success *** address this issue,we conducted a series of indoor experiments employing a high-speed camera to gain greater insights into the valve cover rotation behavior in different medium environments,e.g.,air,water,and simulated drilling *** results indicated that the variation in the valve cover rotation angle in the air and fluid environments can be described by a one-phase exponential decay function with a constant time parameter and by biphasic dose response function,*** rotation behavior in the fluid environments exhibited distinct elastic and gravitational acceleration *** the fluid environments,the density clearly impacted the valve cover closing time and rotation behavior,whereas the effect of viscosity was very *** can be attributed to the negligible influence of the fluid viscosity on the drag coefficient found in this study;meanwhile,the density can increase the buoyancy and the time period during which the valve cover experienced a high drag *** these results,control schemes for the valve cover rotation behavior during IPP-Coring were proposed for different layers and geological conditions in which the different drilling fluids should be used,e.g.,the use of a high-density valve cover in high-pore pressure layers.

关键词： In-situ coring Pressure coring Pressure controller Rotation behavior Drilling fluid

Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

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Science China Chemistry 2025年第1期68卷 394-402页

作者： Zhiqiang ding mingqian wang Zijing Zhou Bin wang Yuesheng Li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

Living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

关键词： organic ion pair controlled cationic ring-opening polymerization activated chain end mechanism isotactic-rich polylactide

A New Pseudo-color Transform for Fibre Masses Inspection of Industrial Images

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自动化学报 2009年第3期35卷 233-238页

作者： LU Xiang-Ju ding ming-Xiao wang Yun-Kuan . High-Tech Innovation Centre Institute of Automation Chinese Academy of Sciences Beijing 100190 P. R. China

针对棉花纤维中混杂的色度不明显、细微等异类杂质难踢除的问题, 本文给出一种新的伪彩色方法以增强原始纤维图像, 突出异类杂质, 从而达到成功分离出其中所含的各类杂质的目的. 本伪彩色方法基于图像的梯度、灰度、局部熵及局部尺度形... 详细信息

针对棉花纤维中混杂的色度不明显、细微等异类杂质难踢除的问题, 本文给出一种新的伪彩色方法以增强原始纤维图像, 突出异类杂质, 从而达到成功分离出其中所含的各类杂质的目的. 本伪彩色方法基于图像的梯度、灰度、局部熵及局部尺度形态滤波器特征信息, 并利用各个特征之间的相互关系, 自适应地标识出不同类型的杂质. 实验表明, 本方法在棉花纤维检测方面优于经典伪彩色方法, 适用于高精度的提纯这一类纤维的自动化检测系统.

关键词： CFS 自动化系统模糊控制计算机

Industrial Control Anomaly Detection Based on Distributed Linear Deep Learning

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Computers, Materials & Continua 2025年第1期82卷 1129-1150页

作者： Shijie Tang Yong ding Huiyong wang School of Computer Science and Information Security Guilin University of Electronic TechnologyGuilin541004China School of Electronic Engineering and Automation Guilin University of Electronic TechnologyGuilin541004China Guangxi Engineering Research Center of Industrial Internet Security and Blockchain Guilin University of Electronic TechnologyGuilin541004China Institute of Cyberspace Technology HKCT Institute for Higher EducationHong Kong999077China School of Mathematics&Computing Science Guilin University of Electronic TechnologyGuilin541004China

As more and more devices in Cyber-Physical Systems(CPS)are connected to the Internet,physical components such as programmable logic controller(PLC),sensors,and actuators are facing greater risks of network attacks,and fast and accurate attack detection techniques are *** key problem in distinguishing between normal and abnormal sequences is to model sequential changes in a large and diverse field of time *** address this issue,we propose an anomaly detection method based on distributed deep *** method uses a bilateral filtering algorithm for sequential sequences to remove noise in the time series,which can maintain the edge of discrete *** use a distributed linear deep learning model to establish a sequential prediction model and adjust the threshold for anomaly detection based on the prediction error of the validation *** method can not only detect abnormal attacks but also locate the sensors that cause *** conducted experiments on the Secure Water Treatment(SWAT)and Water Distribution(WADI)public *** experimental results show that our method is superior to the baseline method in identifying the types of attacks and detecting efficiency.

关键词： Anomaly detection CPS deep learning MLP(multi-layer perceptron)

Research on Flow Loss of Inlet Duct of Marine Waterjets

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Journal of Shanghai Jiaotong university(Science) 2010年第2期15卷 158-162页

作者：丁江明王永生 College of Naval Architecture and Power Engineering Naval University of Engineering

In the process of performance prediction of waterjet system,the flow loss of inlet duct is usually reckoned by the rule of thumb. But its value is often overestimated to some extent,resulting in error of prediction accuracy. This paper introduces a new method to determine the flow loss by means of computational fluid dynamic (CFD). Firstly,the fluid field around waterjet system is simulated by solving the Reynolds Averaged Navier-Stokes (RANS) equations using commercial CFD code Fluent. Then an additional User-Defined Scalar (UDS) equation is embedded into Fluent to get the virtual dividing surface between the internal flow ingested into the inlet duct and the external flow beneath the hull,which is named as streamtube. By virtual of the streamtube the flow loss can be calculated according to the difference of total pressure between the duct outlet and the capture area ahead of the intake. The results from CFD calculation show that the flow loss coeflcient of a typical flush-type inlet duct is varying from 0.05 to 0.12 at different operation conditions,being obviously less than the value of 0.2-0.3 from empirical rules. With the results of this paper the prediction accuracy on propulsive performance of the waterjet system can be improved further.

关键词： ships waterjet propulsion inlet duct flow loss computational fluid dynamics

Lightweight Underwater Target Detection Using YOLOv8 with Multi-Scale Cross-Channel Attention

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Computers, Materials & Continua 2025年第1期82卷 713-727页

作者： Xueyan ding Xiyu Chen Jiaxin wang Jianxin Zhang School of Computer Science and Engineering Dalian Minzu UniversityDalian116600China Research Center of Multimodal Information Perception and Intelligent Processing Dalian Minzu UniversityDalian116600China

Underwater target detection is extensively applied in domains such as underwater search and rescue,environmental monitoring,and marine resource *** is crucial in enabling autonomous underwater robot operations and promoting ocean ***,low imaging quality,harsh underwater environments,and obscured objects considerably increase the difficulty of detecting underwater targets,making it difficult for current detection methods to achieve optimal *** order to enhance underwater object perception and improve target detection precision,we propose a lightweight underwater target detection method using You Only Look Once(YOLO)v8 with multi-scale cross-channel attention(MSCCA),named *** the proposed multiscale cross-channel attention module,multi-scale attention(MSA)augments the variety of attentional perception by extracting information from innately diverse sensory *** cross-channel strategy utilizes RepVGGbased channel shuffling(RCS)and one-shot aggregation(OSA)to rearrange feature map channels according to specific *** aggregates all features only once in the final feature mapping,resulting in the extraction of more comprehensive and valuable feature *** experimental results show that the proposed YOLOv8-UOD achieves a mAP50 of 95.67%and FLOPs of 23.8 G on the Underwater Robot Picking Contest 2017(URPC2017)dataset,outperforming other methods in terms of detection precision and computational cost-efficiency.

关键词： Deep learning underwater target detection attention mechanism

Molecular Investigation of an Anthrax Epidemic in Guizhou Province, China

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Chinese Medical Journal 2018年第11期131卷 1369-1370页

作者： Shi-Jun Li Qing Ma Ying Liu Guang-Hai Yao Guang-Peng Tang ding-ming wang Laboratory of Bacterial Disease Institute of Communicable Disease Control and Prevention Guizhou Provincial Centre for Disease Control and Prevention Guiyang Guizhou 550004 China

To the Editor： Anthrax is a zoonosis to which most mammals, especially herbivores, are considered susceptible. Humans almost invariably contract anthrax from handling infected animals, from carcasses of animals that have died from the disease, or from the meat, skin, hair, bones, etc., of such animals, Guizhou Province is a historical epicenter of anthrax in the southwest of China？ In June 2013, an epidemic suspected to be anthrax consisting of five human cases occurred in Wengan County. The clinical symptoms included erythema, papules, and vesicles on the skin of the hands and forearm, accompanied by tissue swelling, infiltration.

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