检索结果-南通市图书馆

Corrosion Protection of AA2024-T3 by Cerium Malate and Cerium Malate-Doped Sol-Gel Coatings

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2019年第7期32卷 913-924页

作者： Tian-Hui Hu hong-wei shi Tao wei shi-Hua Fan Fu-Chun Liu En-Hou Han Department of Chemistry Northeastern University Shenyang 110819 China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Cerium malate (CeMal) was tested as a corrosion inhibitor for AA2024-T3 in this work. Corrosion inhibition on bare AA2024-T3 indicated that the inhibiting effect was a result of the synergistic effect of cerium cations and maleic anions. The corrosion of AA2024-T3 was stagnated by greatly reducing the corrosion current when CeMal was present in NaCl solutions. CeMal was adsorbed on the surface of AA2024-T3 forming a protective film in the initial stage. Then, cerium cations transformed to cerium oxide/hydroxides, precipitating on the cathode sites to inhibit the further corrosion. The electrochemical impedance spectra results of the sol-gel coatings proved that CeMal was an effective corrosion inhibitor in the sol-gel coatings to provide corrosion protection for AA2024-T3.

关键词： AA2024-T3 Corrosion inhibitor Sol-gel coatings Scanning vibrating electrode technique (SVET)-Electrochemical impedance spectroscopy (EIS)

Iodine-catalyzed N-sulfonylation of benzotriazoles with sodium sulfinates under mild conditions

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2016年第9期27卷 1519-1522页

作者： Si-Xue Wu Yi-Kun Zhang hong-wei shi Jie Yan College of Chemical Engineering Zhejiang University of Technology

A new and convenient procedure is developed for the preparation of N-sulfonylbenzotriazoles from sodium sulfinates and benzotriazoles using molecular iodine as catalyst via the S-N bond formation reaction. This catalytic radical sulfonylation proceeds efficiently in air at room temperature under neutral conditions, and in short reaction time, to afford the corresponding N-sulfonylbenzotriazoles in good yields, thus extending the catalytic application of molecular iodine in organic synthesis.

关键词： Sulfonylation Benzotriazole Sodium sulfinate Molecular iodine Catalysis

Plasma DNA methylation detection for early screening,diagnosis,and monitoring of esophageal adenocarcinoma and squamous cell carcinoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第43期30卷 4609-4619页

作者： Xu-Ji Liu Guo-Liang Pi Sheng Wang Jin-Dan Kai Hui-Fang Yu hong-wei shi Jing Yu Hui Zeng Department of Radiotherapy and Oncology Wuhan Sixth Hospital and Affiliated Hospital of Jianghan UniversityWuhan 430015Hubei ProvinceChina Department of Radiotherapy and Oncology Jianghan UniversitySchool of MedicineWuhan 430015Hubei ProvinceChina Department of Radiation Oncology Hubei Cancer HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430079Hubei ProvinceChina Department of Thoracic Surgery Hubei Cancer HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430079Hubei ProvinceChina Department of Laboratory Medicine Wuhan Hospital of Traditional Chinese and Western MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina

BACKGROUND The early diagnosis rate of esophageal cancer(EC),one of the most prevalent digestive tract cancers worldwide,remains *** To investigate the utility of plasma SHOX2,SEPTIN9,EPO,and RNF180 methylation in the clinical diagnosis and monitoring of *** samples were collected from 210 patients at Hubei Cancer Hospital,and TaqMan polymerase chain reaction was employed to detect plasma SHOX2,SEPTIN9,RNF180,and EPO *** area under the curve was used to estimate their diagnostic value for *** and logistic regression analyses were used to estimate the independent screening risk factors for patients with *** The sensitivity and specificity of combined assessment of plasma SHOX2,SEPTIN9,RNF180,and EPO methylation for adenocarcinoma,squamous cell carcinoma(SCC),and EC detection were 66.67%and 86.27%,77.40%and 85.29%,and 76.19%and 86.27%,respectively;the area under the curve values for diagnosing adenocarcinoma,SCC,and EC were 0.737[95%confidence interval(CI):0.584–0.89],0.824(95%CI:0.775–0.891),and 0.864(95%CI:0.809–0.92),*** According to our findings,plasma SHOX2,SEPTIN9,RNF180,and EPO methylation exhibits appreciated sensitivity for diagnosing *** precise measurement of plasma SHOX2,SEPTIN9,RNF180,and EPO methylation can improve EC diagnosis and therapy efficacy monitoring.

关键词： Methylation Tumor markers Esophageal squamous cell carcinoma Adenocarcinoma Diagnosis

Redoing a bioprosthetic tricuspid valve replacement with pacemaker wire through the ruined bioprosthetic valve orifice

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

Chinese Medical Journal 2011年第6期124卷 958-960页

作者： GUO hong-wei PAN shi-wei SONG Yun-hu HU Sheng-shou Department of Surgery Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical college Beijing 100037 China

Severe tricuspid regurgitation with permanent pacemaker wire passing through the orifice of bioprosthetic tricuspid valve is extremely rare. We present a case of such kind of patient and redid bioprosthetic tricuspid valve replacement. A hawk mouth forceps for bone surgery was used to cut off the mental ring of ruined bioprosthetic tricuspid valve and the ruined valve was removed. A new bioprosthetic tricuspid valve was implanted and the wire of permanent pacemaker was left outside the ring of bioprosthetic tricuspid valve. This method may be helpful for such kind of patient.

关键词： tricuspid valve replacement bioprosthetic valve complete atrioventricular block reoperation

Design of a new type high birefringence photonic crystal fiber

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2008年第1期4卷 19-22页

作者： CHEN Ming, YANG Si-gang, YIN Fei-fe, CHEN hong-wei, and XIE shi-zhong Department of Electronic Engineering of Tsinghua University, Beijing 100084, China Department of Electronic Engineering of Tsinghua University Beijing 100084 China

A High birefringence microstructure fiber with four big elliptical air holes is investigated by using the finite-difference frequency-domain (FDFD) method. Based on the numerical simulations, the influence of the air-hole size and pitch upon the mode birefringence is analyzed. The work may be helpful for the design and fabrication of high birefringence PCFs.

关键词：高双折射晶体光纤设计显微结构

Optic neuritis combined with hepatitis B and neurosyphilis

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2013年第18期126卷 3580-3581页

作者： JIANG Zhao-cai LIU Zi-hao LI hong-yang wei shi-hui Department of Ophthalmology General Hospital of People's Liberation Amay Beijing 100853 China

Optic neuritis is defined as inflammation of the optic nerve. Pain and vision loss are common symptoms ofoptic neuritis. The most frequent cause of optic neuritis is multiple sclerosis： other reasons include viral and bacterial infections, such as hepatitis B and syphilis. We describe a case of a 60-year-old man with a 3-year history of decreased vision acuity in his right eye and a 1-year history of decreased vision acuity in his left eye with light headedness who was admitted to the Neuro- ophthalmological Department of the General Hospital of Chinese People＇s Liberation Army. He had a 2-year past medical history of hypertension and blood pressure instability. None of his family members suffered from vision loss and he had no systemic diseases, especially diabetes mellitus as well as drug usage or toxic exposure.

关键词： optic neuritis hepatitis B neurosyphilis

垂体后叶素致脑桥外髓鞘溶解症的临床特点(附1例报告)

在线全文

学校读者我要写书评

暂无评论

临床神经病学杂志 2012年第6期25卷 458-460页

作者：魏宏世南京同仁医院神经内科 211102

目的分析垂体后叶素致脑桥外髓鞘溶解症(EPM)的临床特点。方法回顾性分析1例应用垂体后叶素致EPM患者的临床资料。结果该患者因支气管扩张咯血予垂体后叶素静脉滴注治疗6 d后出现精神行为异常,当时血钠为109.0 mmol/L;2 d内低钠血症纠... 详细信息

目的分析垂体后叶素致脑桥外髓鞘溶解症(EPM)的临床特点。方法回顾性分析1例应用垂体后叶素致EPM患者的临床资料。结果该患者因支气管扩张咯血予垂体后叶素静脉滴注治疗6 d后出现精神行为异常,当时血钠为109.0 mmol/L;2 d内低钠血症纠正后精神症状加重并相继出现意识障碍及发作性抽搐;查体发现咽反射减弱,四肢肌力、肌张力下降,病理反射阳性;血钠137.6 mmol/L;头颅MRI示双侧尾状核、豆状核、丘脑对称性T1低信号,T2、Flair和DWI高信号改变;经糖皮质激素及对症支持治疗后患者症状有所好转,16个月后生活部分自理。结论垂体后叶素可引起低钠血症继发EPM,过快的纠正低钠血症可加重脑组织的损害。

关键词：垂体后叶素脑桥外髓鞘溶解症

An chromatic dispersion monitoring method based on spectral-shift of SOA

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2007年第5期3卷 359-362页

作者： CHEN Ming YIN Fei-fei HE Li-na ZHANG Ye-jin YANG Si-gang CHEN hong-wei XIE shi-zhong Department of Electronic Engineering of Tsinghua University Beijing 100084 China

A remnant dispersion monitoring method based on spectral-shift of SOA in high speed optical communication system with CSRZ format and single channel speed of 40 Gbit/s is proposed. The system performance can be optimized by careful choosing bandwidth and center wavelength of the optical fiber grating filter. The dynamical monitoring range is ±60 ps/nm and the monitoring precision is about 5 ps/nm. This method can be suitable for the application in dynamical dispersion compensation of high speed optical communication systems.

关键词：彩色色散监视器光谱转移高速光学通信系统通道

Quantum public-key crypto via EPR pairs

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-Qun Fu hong-wei Li Jian-hong shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs