检索结果-南通市图书馆

Antioxidant activity of polyaniline nanofibers

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2007年第8期18卷 1005-1008页

作者： jia wang li Hua Zhu Jing li He Qing Tang Department of Chemistry and Chemical Engineering Hubei Key laboratory of Bioinorganic Chemistry and Materia Medica Huazhong University of Science and Technology Wuhan 430074 China

Well-confined uniform polyaniline （PANI） nanofibers were synthesized by using photo-assisted chemical oxidative polymer- ization of aniline in the presence of different dopant acids, and the radical scavenging ability of the produced PANI nanofibers was determined by the DPPH assay. It was found that the antioxidant activity of PANI nanofibers was higher than conventional PANI, and increased with decreasing of averaged diameter of the nanofibers. The enhanced antioxidant activity was concerned with increased surface area of PANI nanofibers.

关键词： Polyaniline nanofibers Dopant acids Antioxidant activity DPPH radical

The combination of creatine kinase-myocardial band isoenzyme and point-of-care cardiac troponin/contemporary cardiac troponin for the early diagnosis of acute myocardial infarction

在线全文

学校读者我要写书评

暂无评论

World Journal of Emergency Medicine 2022年第3期13卷 163-168页

作者： Guang-mei wang Yong li Shuo Wu Wen Zheng Jing-jing Ma Feng Xu jia-qi Zheng He Zhang jia-li wang Yu-guo Chen Department of Emergency Medicine Qilu Hospital of Shandong UniversityJinan 250012China Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine Institute of Emergency and Critical Care Medicine of Shandong UniversityChest Pain CenterQilu Hospital of Shandong UniversityJinan 250012China Key Laboratory of Emergency and Critical Care Medicine ofShandong Province Key Laboratory of Cardiopulmonary-cerebral Resuscitation Research of Shandong ProvinceShandong Provincial Engineering Laboratory for Emergency and Critical Care MedicineQilu Hospital of Shandong UniversityJinan 250012China Key Laboratory of Cardiovascular Remodeling and Function Research Chinese Ministry ofEducationChinese Ministry of Health and Chinese Academy of Medical SciencesThe State and Shandong Province Joint Key Laboratory of Translational Cardiovascular MedicineQilu Hospital of Shandong UniversityJinan 250012China

BACKGROUND:The early diagnosis of acute myocardial infarction(AMI)remains challenging,especially for institutions without the high-sensitive cardiac troponin(hs-c Tn)***,we aim to assess the value of creatine kinase-myocardial band isoenzyme(CK-MB)combined with different cardiac troponin(c Tn)assays in AMI ***:This multicenter,observational study included 3,706 patients with acute chest pain from September 1,2015,to September 30,*** classified the participants into three groups according to the c Tn assays:the point-of-care c Tn(POC-c Tn)group,the contemporary c Tn(c-c Tn)group,and hs-c Tn *** diagnostic value was quantified using sensitivity and the area under the curve(AUC).RESULTS:Compared to the single POC-c Tn/c-c Tn assays,combining CK-MB and POC-c Tn/c-c Tn increased the diagnostic sensitivity of AMI(56.1%vs.63.9%,P0.999).In the subgroup analysis,the sensitivity of combining CKMB and c-c Tn increased with time from symptom onset6 h(97.5%vs.98.3%,P=0.317).The AUC of the combination of CK-MB and POC-c Tn significantly increased compared to the single POC-c Tn assay(0.776 vs.0.750,P=0.002).The AUC of the combined CKMB and c-c Tn/hs-c Tn assays did not significantly decrease compared with that of the single c-c Tn/hs-c Tn assays within 6 ***:The combination of CK-MB and POC-c Tn or c-c Tn may be valuable for the early diagnosis of AMI,especially when hs-c Tn is not available.

关键词： Creatine kinase-myocardial band isoenzyme Cardiac troponin Acute myocardial infarction Emergency department

Effect of screening colonoscopy frequency on colorectal cancer mortality in patients with a family history of colorectal cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第2期16卷 354-363页

作者： li Zheng Bin li ling Lei li-jia wang Zhi-Ping Zeng jian-Dong Yang Department of Gastroenterology The First Hospital of NanchangNanchang 330008Jiangxi ProvinceChina Department of General Surgery The First Hospital of NanchangNanchang 330008Jiangxi ProvinceChina

BACKGROUND Colorectal cancer is a common malignant tumor in China,and its incidence in the elderly is increasing *** bowel disease is a group of chronic non-specific intestinal inflammatory diseases,including ulcerative colitis and Crohn’s *** included the clinicopathological and follow-up data of patients with colorectal cancer who underwent laparoscopic colectomy or open colectomy at our Gastrointestinal Department between January 2019 and December *** indicators,oncological indicators,and survival rates were compared between the *** results of 104 patients who met the above criteria were extracted from the database(laparoscopic colectomy group=63,open colectomy group=41),and there were no statistically significant differences in the baseline data or follow-up time between the two *** Intraoperative blood loss,time to first ambulation,and time to first fluid intake were significantly lower in the laparoscopic colectomy group than in the open colectomy *** differences in overall mortality,tumor-related mortality,and recurrence rates between the two groups were not statistically significant,and survival analysis showed that the differences in the cumulative overall survival,tumor-related survival,and cumulative recurrence-free rates between the two groups were not statistically *** In elderly patients with colorectal cancer,laparoscopic colectomy has better short-term outcomes than open colectomy,and laparoscopic colectomy has superior long-term survival outcomes compared with open colectomy.

关键词： Colorectal cancer Laparoscopic surgery Open surgery Prognosis Laparoscopic colectomy Open colectomy

Kawasaki disease with peritonsillar abscess as the first symptom:A case report

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

World Journal of Clinical Cases 2023年第22期11卷 5391-5397页

作者： li-Man Huo li-Min li Hao-Yang Peng li-jia wang Zhang-Ying Feng Department of Pharmacy The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina Department of Paediatrics The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina Department of Ultrasound The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina Department of Medical Imaging The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina Department of Clinical Pharmacology The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina

BACKGROUND Kawasaki disease(KD),also known as mucocutaneous lymph node syndrome,is an acute,self-limiting vasculitis of unknown aetiology that mainly involves the medium and small arteries and can lead to serious cardiovascular complications,with a 25%incidence of coronary artery ***–Sillar abscesses are a rare symptom of KD and is easily misdiagnosed at its early *** SUMMARY A 5-year-old boy who presented to a community hospital with a 3-d fever,difficulty in opening his mouth,and neck pain and was originally treated for throat infection without *** the basis of laboratory tests,ultrasound of submandibular and superficial lymph nodes and computed tomography of the neck,the clinician diagnosed the periamygdala abscess and sepsis that did not resolve after antibiotic *** the fifth day of admission,the child developed conjunctival congestion,prune tongue,perianal congestion and desquamation,and slightly stiff and swollen bunions on both feet.A diagnosis of KD was reached with complete remission after intravenous immunoglobulin *** Children with neck pain,lymph node enlargement,or airway obstruction as the main manifestations are poorly treated with intravenous broad-spectrum *** should not rush invasive operations such as neck puncture,incision,and drainage and should be alert for KD when it cannot be explained by deep neck space infection and early treatment with aspirin combined with gammaglobulin.

关键词： Peritonsillar abscess Kawasaki disease Deep neck space involvement Lymphadenitis Gammaglobulin Case report

Application of Improved Grey Prediction Model to Petroleum Cost Forecasting

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

Petroleum Science 2006年第2期3卷 89-92页

作者： li jia wang Baoyi Zhang Baosheng School of Business Administration China University of Petroleum Beijing 102249 China

The grey theory is a multidisciplinary and generic theory that deals with systems that lack adequate information and/or have only poor information. In this paper, an improved grey model using step function was proposed. Petroleum cost forecast of the Henan oil field was used as the case study to test the efficiency and accuracy of the proposed method. According to the experimental results, the proposed method obviously could improve the prediction accuracy of the original grey model.

关键词： Grey forecast petroleum cost mutation smooth degree

A near-infrared plasma membrane-specific AIE probe for fluorescence lifetime imaging of phagocytosis

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2022年第5期65卷 979-988页

作者： Ming-Yu Wu Jong-Kai Leung Chuen Kam Tsu Yu Chou jia-li wang Xueqian Zhao Shun Feng Sijie Chen Ming Wai Lau Centre for Reparative Medicine Karolinska InstitutetHong KongChina Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

Phagocytosis is a biological process that plays a key role in host defense and tissue *** approaches for real-time imaging of phagocytosis are highly desired but ***,an AIE-active near-infrared fluorescent probe,named TBTCP,was developed for fluorescence lifetime imaging of *** could selectively label the cell plasma membrane with fast staining,wash-free process,high signal-to-background ratio,and excellent *** membrane statuses under different osmolarities as well as macrophage phagocytosis of bacteria or large silica particles in early stages could be reported by the fluorescence lifetime changes of *** with current fluorescence imaging methods,which target the bioenvironmental changes in the late phagocytosis stage,this approach detects the changes in the cell membrane,thus giving a faster response to *** article provides a functional tool to report the phagocytic dynamics of macrophages which may greatly contribute to the studies of phagocytic function-related diseases.

关键词： fluorescence lifetime imaging phagocytosis plasma membrane aggregation-induced emission near-infrared

Tracking Control of Autonomous Underwater Vehicles with Internal Moving Mass

在线全文

学校读者我要写书评

暂无评论

自动化学报 2008年第10期34卷 1319-1323页

作者： li jia-wang SONG Bao-Wei SHAO Cheng College of Marine Northwestern Polytechnical University Xi＇an710072 P. R. China

追踪轨道的控制问题被调查为一自治在水下作为致动器用一个内部点团和一个后面的推进器搬到垂直飞机的车辆(AUV ) 。与点团的动力学结合了， AUV 作为一个 underactuated 系统被建模。一个基于 Lyapunov 的追踪控制器被使用 backsteppi... 详细信息

追踪轨道的控制问题被调查为一自治在水下作为致动器用一个内部点团和一个后面的推进器搬到垂直飞机的车辆(AUV ) 。与点团的动力学结合了， AUV 作为一个 underactuated 系统被建模。一个基于 Lyapunov 的追踪控制器被使用 backstepping 途径稳定错误动力学并且强迫位置错误到起源的一位小邻居建议。模拟结果验证建议追踪的途径。

关键词：轨迹控制自动化系统水下交通工具动力系统

Histological outcome for chronic hepatitis B patients treated with entecavir vs lamivudine-based therapy

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第32期21卷 9598-9606页

作者： jia-li wang Xin-Fang Du Shao-Long Chen Yi-Qi Yu Jing wang Xi-Qi Hu ling-Yun Shao jia-Zhen Chen Xin-Hua Weng Wen-Hong Zhang Department of Infectious Diseases Huashan Hospital Fudan University Department of Infectious Diseases Beilun People’s Hospital Department of Pathology Shanghai Medical College Fudan University Key Laboratory of Medical Molecular Virology Ministry of Education and Health Shanghai Medical College and Institutes of Biomedical Science Fudan University

AIM: To compare the histological outcome of chronic hepatitis B(CHB) patients treated with entecavir(ETV) or lamivudine(LAM)-based ***: We conducted a retrospective analysis of data from 42 CHB patients with advanced fibrosis(baseline Ishak score ≥ 2) or cirrhosis who were treated with ETV or LAM-based therapy in Beilun People's Hospital, Ningbo between January 2005 and May 2012. The patients enrolled were more than 16 years of age and underwent a minimum of 12 mo of antiviral therapy. We collected data on the baselinecharacteristics of each patient and obtained paired liver biopsies pre- and post-treatment. The Knodell scoring system and Ishak fibrosis scores were used to evaluate each example. An improvement or worsening of necroinflammation was defined as ≥ 2-point change in the Knodell inflammatory score. The progression or regression of fibrosis was defined as ≥ 1-point change in the Ishak fibrosis score. The continuous variables were compared using t-test or Mann-Whitney test, and the binary variables were compared using χ2 test or Fisher's exact test. The results of paired liver biopsies were compared with a Wilcoxon signed rank ***: Nineteen patients were treated with ETV and 23 patients were treated with LAM therapy for a mean duration of 39 and 42 mo, respectively. After long-term antiviral treatment, 94.74%(18/19) of the patients in the ETV arm and 95.65%(22/23) in the LAM arm achieved an HBV DNA level less than 1000 IU/m L. The majority of the patients(94.74% in the ETV arm and 73.91% in the LAM arm) had normalized ALT levels. The median Knodell necroinflammatory score decreased from 11 to 0 in the patients receiving ETV, and the median Knodell score decreased from 9 to 3 in the patients receiving LAM(P = 0.0002 and < 0.0001, respectively). The median Ishak fibrosis score showed a 1-point reduction in ETV-treated patients and a 2-point reduction in LAM-treated patients(P = 0.0019 and 0.0205, respectively). The patients receiving ETV

关键词： Advanced fibrosis Chronic hepatitis B Cirrhosis En

Lower respiratory tract samples are reliable for severe acute respiratory syndrome coronavirus 2 nucleic acid diagnosis and animal model study

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

Zoological Research 2021年第2期42卷 161-169页

作者： Ren-Rong Tian Cui-Xian Yang Mi Zhang Xiao-li Feng Rong-Hua Luo Zi-Lei Duan jian-jian li jia-Fa liu Dan-Dan Yu ling Xu Hong-Yi Zheng Ming-Hua li Hong-li Fan jia-li wang Xing-Qi Dong Yong-Tang Zheng Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Center for Biosafety Mega-Science Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Yunnan Infectious Diseases Hospital KunmingYunnan 650301China

Severe acute respiratory syndrome coronavirus 2(SARS-Co V-2) and coronavirus disease 2019(COVID-19) continue to impact countries *** present, inadequate diagnosis and unreliable evaluation systems hinder the implementation and development of effective prevention and treatment strategies. Here, we conducted a horizontal and longitudinal study comparing the detection rates of SARS-Co V-2 nucleic acid in different types of samples collected from COVID-19 patients and SARS-Co V-2-infected monkeys. We also detected anti-SARS-Co V-2 antibodies in the above clinical and animal model samples to identify a reliable approach for the accurate diagnosis of SARS-Co V-2 infection. Results showed that, regardless of clinical symptoms, the highest detection levels of viral nucleic acid were found in sputum and tracheal brush samples, resulting in a high and stable diagnosis rate. Anti-SARS-Co V-2 immunoglobulin M(Ig M) and G(Ig G) antibodies were not detected in6.90% of COVID-19 patients. Furthermore,integration of nucleic acid detection results from the various sample types did not improve the diagnosis rate. Moreover, dynamic changes in SARS-Co V-2 viral load were more obvious in sputum and tracheal brushes than in nasal and throat swabs. Thus,SARS-Co V-2 nucleic acid detection in sputum and tracheal brushes was the least affected by infection route, disease progression, and individual differences. Therefore, SARS-Co V-2 nucleic acid detection using lower respiratory tract samples alone is reliable for COVID-19 diagnosis and study.

关键词： COVID-19 SARS-CoV-2 Diagnosis Animal model