检索结果-南通市图书馆

Effect of lens surgery on health-related quality of life in preschool children with congenital ectopia lentis

International Journal of Ophthalmology(English edition) 2024年第1期17卷 66-72页

作者： Yan-Qiao Huang qian-zhong cao Yi-Yao Wang Yi-Jing Zhou Dan-Ying Zheng State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangdong Provincial Key Laboratory of Ophthalmology and Visual ScienceGuangdong Provincial Clinical Research Center for Ocular DiseasesGuangzhou 510060Guangdong ProvinceChina

AIM:To evaluate the effect of lens surgery on health-related quality of life(HRQoL)of preschool children with congenital ectopia lentis(CEL).METHODS:A prospective self-controlled study was conducted in zhongshan Ophthalmic *** aged from 5 to 7y whom were diagnosed with CEL and underwent phacoemulsification with scleral-fixated posterior chamber intraocular lens implantation and their parents were enrolled in this *** of them completed the child and proxy(parental)PedsQL™4.0 before and after the *** preoperative scores were compared to their postoperative *** analyses were performed based on gender and preoperative bilateral presenting visual acuity of the ***:Thirty-two children with CEL successfully underwent surgery without any complications,among whom 8 had monocular surgery and 24 had binocular *** and postoperative questionnaires were completed by 32 child-parent *** intervention could significantly improve the vision of affected children(P<0.001).The medians of physical,psychosocial and total health scores self-reported by the children were 68.75(62.50,81.25),65.00(60.00,80.00)and 67.39(60.87,78.26)preoperatively and were 93.75(87.50,100.00),90.00(83.33,96.67)and 89.13(85.32,95.65)*** preoperative scores of the affected children were significantly lower in all scales than age-matched healthy children(P<0.001).All the postoperative scores were significantly higher than the preoperative scores in affected children and their parents(P<0.001).In the physical functioning evaluation,the preoperative score reported by parents of girls was higher than parents of boys(P=0.041),and the postoperative score of girls was higher than that of boys(P=0.036).CONCLUSION:CEL is associated with significantly worse quality of life in preschool *** intervention can significantly improve the HRQoL in affected children from both personal and family perspective.

关键词： congenital ectopia lentis surgical intervention health-related quality of life preschool children

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of intercritical deformation on tensile performance of a low-carbon Si-Mn steel processed by quenching and bainitic partitioning

引用

Journal of Iron and Steel Research International 2020年第2期27卷 208-216页

作者： Ya-qiang Tian zhong-qian cao Wang Li Hong-bo Pan Xiao-ping Zheng Jin-ying Song Ying-li Wei Lian-sheng Chen Key Laboratory of the Ministry of Education for Modern Metallurgy Technology North China University of Science and TechnologyTangshan 063210HebeiChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling of Ministry of Education Anhui University of TechnologyMa'anshan 243002AnhuiChina

The effect of intercritical deformation on retained austenite and tensile performance of a low-carbon Si-Mn steel in modified quenching and bainitic partitioning processes was *** results showed that the intercritical deformation can play a positive role in stabilizing and refining the retained austenite,and possessed promising potential in balancing tensile strength and ductility of multiphase high-strength *** experimental low-carbon Si-Mn steel exhibited multiphase configuration comprising polygonal ferrite,granular bainite and granular structure after two different modified quenching and bainitic partitioning processes,and the bainitic ferrite laths got refined by intercritical *** volume fraction of retained austenite in film-like and blocky morphology was increased from 11.5%to 13.9%due to applied intercritical deformation,and the larger amount of retained austenite provided the sufficient transformation-induced plasticity effect and resulted in enhanced work hardening degree;in response,enhanced ultimate tensile strength 1260 MPa and fracture elongation 22.1%were obtained,leading to increased product of strength and elongation in value of 27.7 GPa% compared to 20.8 GPa% of undeformed structure.

关键词： Bainitic steel Intercritical deformation Retained austenite Instantaneous work hardening index Transformation-induced plasticity effect

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Trends and characteristics of congenital ectopia lentis in China

引用

International Journal of Ophthalmology(English edition) 2018年第9期11卷 1545-1549页

作者： Guang-Ming Jin Min Fan qian-zhong cao Jun-Xiong Lin Yi-Chi Zhang Jian-qiang Lin Yi-Yao Wang Charlotte-Aimee Young Dan-Ying Zheng State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510060Guangdong ProvinceChina The Third Affiliated Hospital of Sun Yat-sen University-Lingnan Hospital General Internal Medicine Guangzhou 510000Guangdong ProvinceChina Department of Ophthalmology Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene RegulationSun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510000Guangdong ProvinceChina Department of Ophthalmology University of CaliforniaSan FranciscoCA 94115United States

AIM： To elucidate the trends and characteristics of congenital ectopia lentis（CEL） in southern ***： CEL patients from China admitted to zhongshan Ophthalmic Center（ZOC） from January 2006 to December 2015 were recruited in our study. Residence, gender, hospitalization time, age at surgery, and the presence of other ocular abnormalities and system disease were statistically analyzed in different ***： Four hundred and thirty-seven hospitalizations（306 in-patients） diagnosed with CEL from a total of 283 308 hospitalizations were identified, which accounted for 0.15% of the total in-patients. Of the identified CEL in-patients, the total ratio of boys to girls was 2.22：1. Based on a subgroup analysis according to age, patients aged 12-18 years old constituted the highest proportion（31.70%） of all hospitalized CEL patients, and those 0-3 year old constituted the lowest proportion（8.82%） of the total number. The number of CEL increased from 18 to 72 and the hospital based prevalence increased from 8.60% to 18.10% from 2006 to 2015, and the average age at surgery decreased from 9 years old in 2006 to 7.6 years old in 2015. CONCLUSION： The results reveal upward trends in both the number of CEL hospitalizations and hospital based prevalence of CEL in this 10-year study period, but a reduction in the age at surgery, which may reflect the increase of public awareness of children＇s eye care in China.

关键词： congenital ectopia lentis epidemiology characteristics China

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Increased prevalence of parent ratings of ADHD symptoms among children with bilateral congenital cataracts

引用

International Journal of Ophthalmology(English edition) 2019年第8期12卷 1323-1329页

作者： Zhuo-Ling Lin Duo-Ru Lin Jing-Jing Chen Jing Li Xiao-Yan Li Li-Sha Wang Zhen-Zhen Liu qian-zhong cao Chuan Chen Yi Zhu Wei-Rong Chen Yi-Zhi Liu Hao-Tian Lin State Key Laboratory of Ophthalmology ZhongshanOphthalmic CenterSun Yat-sen UniversityGuangzhou510060Guangdong ProvinceChina Department of Molecular and Cellular Pharmacology University of Miami Miller School of MedicineMiamiFlorida33136USA

AIM: To investigate the behavioral and psychological disorders and the prevalence of parent ratings of attention deficit hyperactivity disorder(ADHD) symptoms among children with bilateral congenital cataracts(CCs). METHODS: This cross-sectional study investigated children with bilateral CC aged 3-8 y(CC group) using Conners’ Parent Rating Scale-48(CPRS-48) from July to December 2016. The abnormal rates of psychological symptoms in CC children and normal vision(NV) children were compared using the Chi-square test. The scores of CC children were compared with those of NV children and the Chinese urban norm using the independent samples t-test and one-sample t-test, respectively. RESULTS: A total of 262 valid questionnaires were collected. The ratio of CC children to NV children was 119:143. The overall rate of psychological symptoms in CC children was 2.28 times higher than that in NV children(46.22% vs 20.28%, Pearson’s χ2=20.062;P<0.001). CC children showed higher scores for conduct problems, learning problems, impulsiveness/hyperactivity, anxiety, and hyperactivity index than NV children and the Chinese urban norm, particularly between the ages of 3 and 5 y. Furthermore, male children aged between 6 and 8 y showed a higher impulsive/hyperactive score than females of the same age(t=6.083, P<0.001). CONCLUSION: Children with bilateral CCs have a higher rate of ADHD symptoms than children with NV. This study provides clinical evidence that screening for psychological symptoms and particularly for ADHD symptoms in children with bilateral CC are recommended for an early diagnosis and timely treatment.

关键词： attention deficit hyperactivity disorder congenital cataract Conners’ Parent Rating Scale-48

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Mechanism of Heating Rate on the Secondary Recrystallization Evolution in Grain Oriented Silicon Steel

引用

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 275-282页

作者： GAO qian LI Jun WANG Xianhui cao Laifu GONG Jian LI Bo Central Iron and Steel Research Institute Group Beijing 100081China Shougang Zhixin Electromagnetic Material R&D(Beijing)Co. Ltd.Beijing 101300China Beijing Shougang Co. Ltd.Qian’an 064404China

Grain-oriented silicon steels were prepared at different heating rates during high temperature annealing,in which the evolution of magnetic properties,grain orientations and precipitates were *** illustrate the Zener factor,the diameter and number density of precipitates of interrupted testing samples were statistically *** effect of precipitate ripening on the Goss texture and magnetic property was *** indicated that the trend of Zener factor was similar under different heating rates,first increasing and then decreasing,and that the precipitate maturing was greatly inhibited as the heating rate *** recrystallization was developed at the temperature of 1010℃when a heating rate of 5℃/h was used,resulting in Goss,Brass and{110}oriented grains growing abnormally and a magnetic induction intensity of ***,increasing the heating rate to 20℃/h would inhibit the development of undesirable oriented grains and obtain a sharp Goss ***,when the heating rate was extremely fast,such as 40℃/h,poor secondary recrystallization was developed with many island grains,corresponding to a decrease in magnetic induction intensity to 1.87 *** a suitable heating rate of 20℃/h,the sharpest Goss texture and the highest magnetic induction of 1.94 T with an onset secondary recrystallization temperature of 1020℃were found among the experimental variables in this *** heating rate affected the initial temperature of secondary recrystallization by controlling the maturation of precipitates,leading to the deviation and dispersion of Goss texture,thereby reducing the magnetic properties.

关键词： high temperature annealing heating rate secondary recrystallization grain oriented silicon steel

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Timing and approaches in congenital cataract surgery:a four-year,two-layer randomized controlled trial

引用

International Journal of Ophthalmology(English edition) 2017年第12期10卷 1835-1843页

作者： Hao-Tian Lin Er-Ping Long Jing-Jing Chen Zhen-Zhen Liu Zhuo-Ling Lin qian-zhong cao Xia-Yin Zhang Xiao-Hang Wu Qi-Wei Wang Duo-Ru Lin Xiao-Yan Li Jin-Chao Liu Li-Xia Luo Bo Qu Wei-Rong Chen Yi-Zhi Liu State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Ya-sen UniversityGuangzhou 510060Guangdong ProvinceChina

AIM：To compare visual prognoses and postoperative adverse events of congenital cataract surgery performed at different times and using different surgical ***：In this prospective,randomized controlled trial,we recruited congenital cataract patients aged 3 mo or younger before cataract ***-one eligible patients were randomly assigned to two groups according to surgical timing：a 3-month-old group and a 6-month-old *** eye underwent one of three randomly assigned surgical procedures,as follows：surgery A,lens aspiration（I/A）;surgery B,lens aspiration with posterior continuous curvilinear capsulorhexis（I/A＋PCCC）;and surgery C,lens aspiration with posterior continuous curvilinear capsulorhexis and anterior vitrectomy（I/A＋PCCC＋A-Vit）.The long-term best-corrected visual acuity（BCVA） and the incidence of complications in the different groups were compared and ***：A total of 57 participants（114 eyes） with a mean follow-up period of 48.7 mo were included in the final *** overall log MAR BCVA in the 6-month-old group was better than that in the 3-month-old group（0.81±0.28 vs 0.96±0.30;P=0.02）.The overall log MAR BCVA scores in the surgery B group were lower than the scores in the A and C groups（A：0.80±0.29,B：1.02±0.28,and C：0.84±0.28;P=0.007）.A multivariate linear regression revealed no significant relationships between the incidence of complications and long-term ***：It might be safer and more beneficial for bilateral total congenital cataract patients to undergosurgery at 6 mo of age than 3 ***,with rigorous follow-up and timely intervention,the postoperative complications in these patients are treatable and do not compromise visual outcomes.

关键词： pediatric cataract surgery postoperativecomplications long-term visual function

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

某石化设备316L不锈钢材料失效原因分析及解决办法

引用

全面腐蚀控制 2024年第3期38卷 97-102页

作者：李军威沈晨祎钱曹中上海赛科石油化工有限责任公司上海201424

某石油化工厂设备运行期间泄漏,紧急停车后对失效部位316L材料进行材质分析、金相检查等理化检验,结合腐蚀产物离子色谱分析结果及工艺条件,分析是氯离子混入工艺流程在滞流区沉积浓缩引发的316L不锈钢材料点蚀,在有拉应力存在的部位则... 详细信息

某石油化工厂设备运行期间泄漏,紧急停车后对失效部位316L材料进行材质分析、金相检查等理化检验,结合腐蚀产物离子色谱分析结果及工艺条件,分析是氯离子混入工艺流程在滞流区沉积浓缩引发的316L不锈钢材料点蚀,在有拉应力存在的部位则有应力腐蚀开裂裂纹,点蚀穿孔及裂纹贯穿会导致泄漏。为使装置尽快开车,通过对设备材料及服役环境的分析,决定采用超支化聚合物涂料对设备内表面氯离子沉积区域涂敷保护,完工后经过约3年周期观察,涂层完好如初,保护区域内再没有出现腐蚀,由此证明将316L材料涂敷超支化聚合物涂料是一种及时有效的防护氯离子腐蚀的方法。

关键词： 316L不锈钢氯离子应力腐蚀开裂点蚀超支化聚合物涂料

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prediction-Based State Estimation and Compensation Control for Networked Systems With Communication Constraints and DoS Attacks

引用

IEEE/CAA Journal of Automatica Sinica 2024年第11期11卷 2352-2354页

作者： zhong-Hua Pang qian cao Haibin Guo Zhe Dong IEEE the Key Laboratory of Fieldbus Technology and Automation of Beijing North China University of Technology

Dear Editor,This letter investigates the output tracking control issue of networked control systems(NCSs)with communication constraints and denial-of-service(DoS)attacks in the sensor-to-controller channel,both of whi... 详细信息

关键词： DoS service network

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Nonlinear Impact Damage Evolution of Charpy Type and Analysis of Its Key Influencing Factors

引用

Chinese Journal of Mechanical Engineering 2024年第1期37卷 254-264页

作者： Jianfeng Mao qian Xu Jiadong Yang Chi cao Dasheng Wang Fengping zhong Mingya Chen Institute of Process Equipment and Control Engineering Zhejiang University of TechnologyHangzhou 310032China Taizhou Key Laboratory of Advanced Manufacturing Technology Taizhou InstituteZhejiang University of TechnologyTaizhou 318014China State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen 518172China Zhejiang Academy of Special Equipment Science Hangzhou 310020China Suzhou Nuclear Power Research Institute Suzhou 215004China

The current research of Charpy impact mainly focuses on obtaining the ductile brittle transition temperature of materials by *** with experiments,numerical simulation can study many problems with harsh ***,there are still few studies on the influence of geometric factors such as side *** this paper,the geometry of standard Charpy impact test is *** with different widths and side grooves are *** finite element model of Charpy impact was established by ABAQUS *** test results and simulation results to verify each *** effects of sample width,side groove depth and side groove bottom fillet on the impact fracture resistance of the sample were *** results show that the specimen width is positively correlated with the impact toughness of the *** side groove greatly reduces the impact toughness of the material;the toughness of side groove decreases with the increase of depth;the fracture toughness of side groove decreases with the increase of fillet at the bottom of side *** proportion of toughness energy to impact energy of samples was *** results show that the toughness energy accounts for about 70%of the impact energy of the sample,which has little to do with the geometric characteristics of the *** study presents a reliable method for studying Charpy impact *** influence of geometric parameters is obtained,which provides a reference method for the study of impact toughness of high toughness materials.

关键词： Johnson-Cook model Impact toughness Charpy impact

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhanced breakdown strength of BaTiO_(3)-based multilayer ceramic capacitor by structural optimization

引用

Rare Metals 2023年第8期42卷 2552-2561页

作者： qian Liu Hua Hao Qing-Hu Guo zhong-Hui Shen Jian Wang Ming-He cao zhong-Hua Yao Han-Xing Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and EngineeringWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528220China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China International School of Material Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Material Science and EngineeringWuhan University of TechnologyWuhan 430070China

0.5 wt%Nb_(2)O_(5)doped 0.12BiAlO_(3)-0.88BaTiO_(3)(12BA5N)multilayer ceramic capacitor(MLCC-1)was prepared,which satisfied EIA X7R specification(where X is the minimum temperature,R is the percentage of capacitance variation limit)at 1 *** distribution of internal electric field under breakdown voltage was simulated by finite element method(FEM),indicating that the electric field strength increased significantly at the terminal of internal *** areas may become the headstream of breakdown for MLCC-1 due to the shape *** order to improve the breakdown performance of MLCC-1,it was optimized by 12BA5N+2G green sheets(prepared by 12BA5N ceramic powder with 2 wt%B-Al-Si glass additive),then MLCC-2 was obtained which satisfied EIA X8R *** BDS rose from 20 to29.4 kV·mm^(-1),and the electric field distribution of dielectric layer was also analyzed by ***,it was also found that the grain size and the dielectric constants of"core"and"shell"parts for the 12BA5N+2G dielectric layer both contributed to the enhanced BDS of MLCC-2according to the simulation results from FEM.

关键词： Multilayer ceramic capacitor(MLCC) Breakdown strength(BDS) Simulation Grain size Dielectric constant

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：