检索结果-南通市图书馆

Efficacy and safety of 0.4 percent sodium hyaluronate for endoscopic submucosal dissection of gastric neoplasms

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 Gastroenterology 2013年第20期19卷 3069-3076页

作者： young Dae Kim Jun Lee Ju Yeon cho Seok Won Kim Seong Hwan Kim young Kwan cho Jin Seok Jang Ji Sun Han Joo young cho Division of Gastroenterology and Hepatology Department of Internal MedicineMedical SchoolChosun UniversityGwangju 501-717South Korea Department of Internal Medicine Eulji HospitalEulji UniversitySeoul 139-872South Korea Department of Internal Medicine Dong A University College of MedicineBusan 602-715South Korea Department of Internal Medicine Institute for Digestive ResearchDigestive Disease CenterSoonchunhyang University College of MedicineSeoul 140-743South Korea

AIM:To evaluate the efficacy and safety of sodium hyaluronate solution(SH) in endoscopic submucosal dissection(ESD) of gastric ***:A prospective multicenter randomized,double blind,controlled trial was designed and utilized in this study.A total of 76 patients with 5-20 mm sized gastric neoplasms were enrolled at three academic hospitals in South Korea from June 2011 to October *** were randomly assigned to the 0.4% sodium hyaluronate or control *** lesions underwent endoscopic *** was performed with 0.4%SH and normal saline(NS) solution for submucosal *** was assessed using en bloc resection and the number of additional *** evaluation variables were the volume of injection material,steepness of mucosal elevation,bleeding rate,procedural time and operator ***,the safety was assessed by analyzing adverse events during the ***:The usefulness rate in the 0.4%SH group and the controlled group had statistically significant difference under intention to treat(ITT) analysis(90.91% vs 61.11% P = 0.0041).Under per protocol(PP),the usefulness rate is statistically significant different(93.10% vs 61.76%,P = 0.0036).The difference in volume of the solution injected between 0.4%SH group and the controlled group and NS group was also statistically significant under intention to treat and per protocol analysis(ITT:0.03 ± 0.02 mL vs 0.06 ± 0.03 mL,P = 0.0003,PP:0.03 ± 0.02 mL vs 0.06 ± 0.03 mL,P = 0.0004).Satisfaction above the grade good was significantly higher in the SH group under intention to treat and per protocol analysis(ITT:90.91% vs 61.11%,P = 0.0041,PP = 93.11% vs 61.77%,P = 0.0022).Adverse events above grade 3 were not noticed in either *** adverse events were treated and were judged as not associated with the submucosal injection ***:0.4%SH solution is a safe and effective agent that doesn't cause any significant adverse events and is useful for submucos

关键词： Sodium hyaluronate Endoscopic submucosal dissection Gastric neoplasm Endoscopic mucosal resection

Practical Privacy-Preserving ROI Encryption System for Surveillance Videos Supporting Selective Decryption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第12期141卷 1911-1931页

作者： Chan Hyeong cho Hyun Min Song Taek-young Youn Department of Cyber Security Dankook UniversityYonginGyeonggi-Do16890Republic of Korea

With the advancement of video recording devices and network infrastructure,we use surveillance cameras to protect our valuable *** paper proposes a novel system for encrypting personal information within recorded surveillance videos to enhance efficiency and *** proposed method leverages Dlib’s CNN-based facial recognition technology to identify Regions of Interest(ROIs)within the video,linking these ROIs to generate unique *** IDs are then combined with a master key to create entity-specific keys,which are used to encrypt the ROIs within the *** system supports selective decryption,effectively protecting personal information using surveillance ***,the system overcomes the limitations of existing ROI recognition technologies by predicting unrecognized frames through *** research validates the proposed technology through experimental evaluations of execution time and post-processing techniques,ensuring comprehensive personal information *** for setting the thresholds used in this process are also *** the proposed method could serve as an effective solution to security vulnerabilities that traditional approaches fail to address.

关键词： Privacy de-identification selective decryption surveillance video

Thermoelectric Transport Properties of R_yFe_3NiSb_(12)(R=Ba,Nd and Yb)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2014年第11期30卷 1134-1140页

作者： Ruiheng Liu Jung young cho Jiong Yang Wenqing Zhang Lidong Chen CAS Key Laboratory for Energy-conversion Materials Shanghai Institute of CeramicsChinese Academy of Sciences Materials and Processes Laboratory GM R&D CenterWarrenMI 48090USA Department of Materials Science & Engineering University of Washington

To evaluate the influence of Ni substitution on electrical transport properties, the thermoelectric transport properties of the p-type skutterudites RyFe3NiSb12 （R = Ba, Nd and Yb） are systematically investigated from 2.5 K to 800 K. By carefully modifying the filling fractions of the three fillers, Ba, Nd and Yb, the carrier concentration is precisely adjusted, which changes proportionally to the nominal value calculated by valence counting rule. The carrier concentration dependences of mobility and Seebeck coefficient represent two band contribution in the valence band, and the optimized carrier concentration for thermoelectric performance is between （5-9） × 10^20 cm^-3. The lattice thermal conductivity of samples filled with rare-earth elements （Nd and Yb） are significantly lower as compared to Ba-filled, due to the lower resonant frequency and partial filling. Compared with Co substitution, Ni substitution tends to close the band gap, which results in heavier bipolar diffusion at high temperature for RyFe3NiSb12. However, due to state, when the carrier concentrations are similar, RyFe3NiSb12 possess higher thermal power and thus higher power factor than RyFe2Co2Sb12 in the lower temperature range. A ZT value of 0.73 is obtained for Yb0.77Fe3NiSb12 at 660 K.

关键词： Thermoelectric Skutterudites Band structure Bipolar diffusion

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2017年第10期12卷 1640-1647页

作者： Jisu Hong bo-yong Park Hwan-ho cho Hyunjin Park Department of Electronic Electrical and Computer EngineeringSungkyunkwan UniversitySuwonKorea Center for Neuroscience Imaging Research(CNIR) Institute for Basic ScienceSuwonKorea School of Electronic and Electrical Engineering Sungkyunkwan UniversitySuwonKorea

Attention deficit and hyperactivity disorder（ADHD） is a disorder characterized by behavioral symptoms including hyperactivity/impulsivity among children,adolescents,and *** ADHD related symptoms are influenced by the complex interaction of brain networks which were under *** explored age-related brain network differences between ADHD patients and typically developing（TD） subjects using resting state f MRI（rs-f MRI） for three age groups of children,adolescents,and *** collected rs-f MRI data from 184 individuals（27 ADHD children and 31 TD children;32 ADHD adolescents and 32 TD adolescents;and 31 ADHD adults and 31 TD adults）.The Brainnetome Atlas was used to define nodes in the network *** compared three age groups of ADHD and TD subjects to identify the distinct regions that could explain age-related brain network differences based on degree centrality,a well-known measure of nodal *** left middle temporal gyrus showed significant interaction effects between disease status（i.e.,ADHD or TD） and age（i.e.,child,adolescent,or adult）（P 0.001）.Additional regions were identified at a relaxed threshold（P 0.05）.Many of the identified regions（the left inferior frontal gyrus,the left middle temporal gyrus,and the left insular gyrus） were related to cognitive *** results of our study suggest that aberrant development in cognitive brain regions might be associated with age-related brain network changes in ADHD *** findings contribute to better understand how brain function influences the symptoms of ADHD.

关键词： nerve regeneration attention deficit and hyperactivity disorder cognitive function connectivity resting-state f MRI Brainnetome Atlas whole brain analysis disease-aging interaction effect neuroscience neural regeneration

Influence of potassium pyrophosphate in electrolyte on coated layer of AZ91 Mg alloy formed by plasma electrolytic oxidation

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第4期19卷 824-828页

作者： Jin-young cho Duck-young HWANG Dong-H eon LEE bongyoung YOO Dong-Hyuk SHIN Department of Metallurgy and Materials Scienc e Hanyang University

The effect of potassium pyrophosphate in the electrolyte on plasma electrolytic oxidation(PEO) process for AZ91 Mg alloy was *** morphologies and chemical compositions of the coating layer on the AZ91 Mg alloy were evaluated and corrosion resistance was also estimated by potentiodynamic polarization *** coating layer on AZ91 Mg alloy coated from the Bath 2 containing 0.03 mol/L of potassium pyrophosphate for 360 s exhibited considerably dense structure and contained 11%-18%(mass fraction) of *** higher content of phosphorous of coating layer coated from Bath 2 could be detected at the bottom of oxide layer,which strongly implied that the phosphorous ion might be concentrated at the barrier *** potential of coating layer of AZ91 Mg alloy increased and corrosion current density decreased with increasing the concentration of potassium *** polarization resistance(Rp) of coating layer of AZ91 Mg alloy coated from Bath 2 was 4.65×107 Ω/cm2,which was higher than that(Rp=3.56×104 Ω/cm2) of the sample coated from electrolyte without potassium *** coating layer coated from Bath 2 containing 0.03 mol/L potassium pyrophosphate exhibited the best corrosion resistance.

关键词： AZ91镁合金合金涂层焦磷酸钾电解氧化等离子体电解质腐蚀电流密度耐腐蚀性

Evaluation of non-ampullary duodenal polyps: Comparison of non-neoplastic and neoplastic lesions

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第43期16卷 5474-5480页

作者： Sung Hoon Jung Woo Chul Chung Eun Jung Kim Seol Hye Kim Chang Nyol Paik bo In Lee young Seok cho Kang-Moon Lee Department of Internal Medicine College of Medicine The Catholic University of Korea

AIM: To evaluate duodenal polyps, divided into nonneoplastic and neoplastic lesions. In addition, the clinical characteristics of duodenal hyperplastic polyps are determined. METHODS: We analyzed medical records of 50 114 consecutive patients submitted to for first diagnostic esophago-gastroduodenoscopy between January 2004 and December 2009. We excluded lesions on the ampulla of Vater and submucosal tumors. We studied 510 cases that were diagnosed endoscopically with duodenal polyps and enrolled a total of 221 cases that had undergone tissue biopsy. We analyzed the differences between non-neoplastic and neoplastic lesions, and determined the clinical features of duodenal hyperplastic polyps. RESULTS: Non-neoplastic lesions were found in 196 patients and neoplastic lesions in 25 patients. On uni-variate analysis, there were significant differences in shape, location, and size. Polyps more than 10 mm in diameter or polyps in the second portion had independent risk factors for being neoplastic lesions, as identified by multivariate analysis. In 23 cases of hyperplastic polyps (79.3%), they were accompanied by gastroduodenal pathology, which was possibly associated with Helicobacter pylori . CONCLUSION: Polyps of more than 10 mm or polyps in the second portion of the duodenum should be evaluated by histological examination.

关键词： Duodenum Polyp Helicobacter pylori

Effect of two different doses of intravitreal bevacizumab with temporal retina-sparing laser photocoagulation for retinopathy of prematurity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2018年第1期11卷 166-169页

作者： A young choi Hochan cho Yu Cheol Kim Department of Ophthalmology Keimyung University School of Medicine Dongsan Medical Center Department of Internal Medicine Keimyung University School of Medicine Dongsan Medical Center

This study aims to compare the efficacy and safety between two different doses of intravitreal bevacizumab（IVB） injection with temporal retina-sparing laser（TRSL） photocoagulation for retinopathy of prematurity（ROP）. We retrospectively evaluated 22 eyes of ROP infants who underwent IVB combined with partial TRSL for stage 3＋ zone I or posterior zone II ROP. Laser photocoagulation was applied on the avascular retina, sparing two-discdiameter width temporal avascular area anterior to ridge. A half dose（0.625 mg） or minimal dose（0.25 mg） of IVB was conducted. Four eyes in minimal dose group were retreated with IVB and laser photocoagulation on the spared retina. Of those 4 retreated eyes, three developed preretinal hemorrhage around the ridge after the first treatment, resulting in fibrotic macular dragging. A half dose of IVB may be more effective than a minimal dose with partial TRSL for ROP. Preretinal hemorrhage may be a harbinger of poor prognosis.

关键词： bevacizumab laser photocoagulation retinopathy of prematurity

A density functional theory study of the tunable structure, magnetism and metal-insulator phase transition in VS2 monolayers induced by in-plane biaxial strain

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2015年第4期8卷 1348-1356页

作者： Min Kan bo Wang young Hee Lee Qiang Sun Department of Materials Science and Engineering Peking University 8eijing 100871 China Center for Integrated Nanostructure Physics Institute for Basic Science Sungkyunkwan University Suwon 440-746 Korea Department of Physics and Department of Energy Science Sungkyunkwan University Suwon 440-746 Korea School of Mathematical Sciences Peking University Beijing 100871 China Center forAppfied Physics and Technology Peking University Beijing 100871 China

We report a density functional theory study of a phase transition of a VS2 monolayer that can be tuned by the in-plane biaxial strain. This results in both a metal-insulator transition and a low spin-high spin magnetic transition. At low temperature, the semiconducting H-phase is stable and large strain （〉3%） is required to provoke the transition. On the other hand, at room temperature （300 K）, only a small tensile strain of 2% is needed to induce the phase transition from the semiconducting H-phase to the metallic T-phase together with the magnetic transition from high spin to low spin. The phase diagram dependence on both strain and temperature is also discussed in order to provide a better understanding of the phase stability of VS2 monolayers.

关键词： phase transition biaxial strain phase diagram density functional theory(DFT) transition metaldichalcogenide(TMD) materials

Chemical composition and antioxidant capacity of the aqueous extract of Phellodendron amurense

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2018年第4期29卷 1033-1040页

作者： Natarajan Velmurugan Duraisamy Kalpana Jae young cho Yang Soo Lee Department of Forestry College of Agriculture and Life Sciences Chonbuk National University Jeonju 54896 Republic of Korea Branch Laboratory-Itanagar CSIR-North East Institute of Science and Technology Naharlagun Arunachal Pradesh 791 110 India Department of Agricultural Chemistry Chonbuk National University Jeonju 54896 Republic of Korea

The aqueous extract of Phellodendron amurense Rupr. （Amur Cork Tree） provides a rich source of antioxidants and chemical compounds, and can be used for food and wood preservative materials. In this study, we characterized the chemical composition of this extract by GC and GC/MS. The antioxidant capacity was evaluated using a variety of antioxidant assays （superoxide radical, hydroxyl radical, nitric oxide radical, and DPPH radical scavenging activity）. Additionally, total polyphenolic content was determined. Phenolic acids and acetone derivatives were major compounds of the extract capable of scavenging the DPPH free radical and reducing ferric ions. DPPH and ferric ion reduction results were strongly correlated with total phenolic content of the extract which also exhibited strong nitric oxide, hydroxyl radical scavenging and superoxide anion radical scavenging activities.

关键词： Phellodendron amurense Aqueous extract Chemical characterization Antioxidant activity