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Efficacy and cost analysis of transrectal ultrasound-guided prostate biopsy under monitored anesthesia

Asian Journal of Andrology 2011年第5期13卷 724-727页

作者： Sung Gu Kang Bum Sik Tae Sam Hong Min Young Hwii Ko seok Ho Kang jeong Gu Lee Je jong Kim Jun Cheon Department of Urology Korea University School of Medicine Korea University Robotic Urologic Surgery Center Korea University Hospital Seoul 136-705 Korea Department of Anesthesiology and Pain Medicine Korea University School of Medicine Korea University Robotic Urologic Surgery Center Korea University Hospital Seou 136-705 Korea

Sedation may result in reduction in pain during transrectal ultrasound （TRUS）-guided prostate biopsies. We aimed to evaluate the efficacy and safety of a combination of propofol and remifentanil infusion during TRUS-guided prostate biopsy and the related increases in health care costs. From January to September 2010, 100 men undergoing a transrectal prostate biopsy were randomized into two groups. In Group 1, 50 patients received a combined infusion of propofol and remifentanil; in Group 2, 50 patients received lidocaine jelly. After TRUS-guided biopsies were performed, pain and patient satisfaction were evaluated by a lO-point visual analog scale （VAS）, and a cost-related patient satisfaction questionnaire was completed by all patients. Patients were also asked whether they would be willing to undergo repeat biopsy by the same method. Patients in Group I showed a significantly lower VAS score than those in Group 2 （mean VAS score： 0.9± 1.1 versus 6.3±2.5; P〈0.001）. In addition, the patient satisfaction scale was significantly higher in Group 1 （P=0.002）. Although the overall cost was significantly higher in Group 1 （P=0.006）, patient satisfaction scales considering cost were also higher in this group （P=0.009）. A combination of propofol and remifentanil is a safe and effective way to decrease patient pain and increase patient satisfaction during TRUS-guided prostate biopsy. Although the costs were higher in the group that received sedation, as expected, the patients exhibited heightened satisfaction and willingness to repeat biopsies by the same method.

关键词： biopsy pain prostate sedation

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Material Characterization of Ni Base Alloy for Very High Temperature Reactor

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Journal of Materials Science & Technology 2013年第12期29卷 1184-1190页

作者： Dong-Jin Kim Gyeong-Geun Lee Dae jong Kim Su Jin jeong Nuclear Materials Division Korea Atomic Energy Research Institute

The generation of highly efficient electricity and the production of massive hydrogen are possible using a very high temperature reactor （VHTR） among generation IV nuclear power plants. The structural material for an intermediate heat exchanger （IHX） among numerous components should be endurable at high temperature of up to 950 °C during long-term operation. Impurities inevitably introduced in helium as a coolant facilitate the material degradation by corrosion at high temperature. In the present work, the surface reactions available under controlled impure helium at 950 °C were investigated based on the thermodynamics and the corrosion tests were performed in a temperature range of 850-950 °C during 10-250 h for commercial Alloy 617 as a candidate material for an IHX. Moreover, the mechanical property and microstructure for nickel-based alloys fabricated in laboratory were evaluated as a function of the processing parameters such as hot rolling and heat treatment conditions. From the reaction rate constant obtained from an impure helium control system for a material evaluation, it was predicted that the outer oxide layer thickness, internal oxide depth, and carbide- depleted zone depth reach about 116, 600 and 1000 μm, respectively when Alloy 617 is exposed to an impure helium environment at 950 ~C for 20 years. For Ni-Cr-Co-Mo alloy, subsequent annealing and a combination of cold working and subsequent annealing following solution annealing caused increases in the grain boundary carbide coverage and size. The angular distribution of the grain boundary as well as the carbide distribution was also changed leading to a consequent improvement of the mechanical property at 950 °C in air.

关键词： Nickel base alloy Intermediate heat exchanger High temperature reactor Corrosion Mechanical property

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Electrochemical characteristics of Al-Mg and Al-Mg-Si alloy in sea water

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中国有色金属学会会刊：英文版 2012年第S3期22卷 881-886页

作者： Seong-jong KIM Seung-jun LEE Jae-yong jeong Kyu-hwan KIM Division of Marine Engineering Mokpo Maritime University

Among Al alloys,particularly 5000 series Al Mg and 6000 series Al Mg Si often used as marine materials have excellent corrosion resistance,low melting point,and thereby showing recycling availability when compared to other *** experiments were conducted to select the most suitable material for marine *** electrochemical experiments were conducted in natural *** corrosion test was performed in many methods such as anodic/cathodic polarization and Tafel analysis using multi-channel potentio/galvanostat WMPG *** results,anodic and cathodic polarization behaviors indicate the characteristics of passive state and concentration polarization by reduction reaction in dissolved oxygen,which shows excellent electrochemical *** analysis results show no significant difference but 5052-O alloy of various alloy materials indicates the lowest corrosion current ***,5052-O Al alloy presents most anti-corrosion material in marine environment.

关键词： Al alloy ship electrochemical characteristics corrosion

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Morphologic factors of biliary trees are associated with gallstone-related biliary events

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World Journal of Gastroenterology 2015年第1期21卷 276-282页

作者： Jin-seok Park Don Haeng Lee Jun Hyeok Lim seok jeong Young Sun Jeon Department of Internal Medicine Digestive Disease CenterInha University School of MedicineIncheon 400-711South Korea Department of Radiology Inha University School of MedicineIncheon 400-711South Korea

AIM: To determine the risk factors for gallstone-related biliary ***: This retrospective cohort study evaluated magnetic resonance cholangiopancreatography imagesfrom 141 symptomatic and 39 asymptomatic gallstone patients who presented at a single tertiary hospital between January 2005 and December ***: Logistic regression analysis showed significant differences between symptomatic and asymptomatic patients with gallstones in relation to the number of gallstones,the angle between the long axis of the gallbladder and the cystic duct,and the cystic duct *** analysis showed that the number of gallstones(OR = 1.27,95%CI: 1.03-1.57; P = 0.026),the angle between the long axis of the gallbladder and the cystic duct(OR = 1.02,95%CI: 1.00-1.03; P = 0.015),and the diameter of the cystic duct(OR = 0.819,95%CI: 0.69-0.97; P = 0.018) were significantly associated with biliary *** incidence of biliary events was significantly elevated in patients who had the presence of more than two gallstones,an angle of > 92° between the gallbladder and the cystic duct,and a cystic duct diameter < 6 ***: These findings will help guide the treatment of patients with asymptomatic *** should closely monitor patients with asymptomatic gallstones who exhibit these characteristics.

关键词： Cystic duct Gallbladder Gallstone disease Magnetic

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Naphthalene emissions from moth repellents or toilet deodorant blocks determined using head-space and small-chamber tests

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Journal of Environmental Sciences 2008年第8期20卷 1012-1017页

作者： JO Wan-Kuen LEE jong-Hyo LIM Ho-Jin jeong Woo-Sik Department of Environmental Engineering Kyungpook National UniversityDaegu 702-701Korea. School of Food and Life Science Inje University KimhaeKyungsangnarado 621-749Korea

The present study investigated the emissions of naphthalene and other compounds from several different moth repellents(MRs) and one toilet deodorant block(TDB)currently sold in Korea,using a headspace *** emission factors and emission rates of naphthalene were studied using a small-scale environmental ***-type products emitted a higher concentration of the total volatile organic compounds(VOCs)(normalized to the weight of test piece)than ball-type products,which in turn emitted higher con...

关键词： volatile organic compounds(VOCs) chemical composition ball-type gel-type paper-type

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Effect of Palladium Nanoparticles on Photocatalytic Characteristics of N doped Titania Catalyst

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Journal of Materials Science & Technology 2015年第6期31卷 664-669页

作者： jong-Ho Lee jeong-Il Youn Young-Jig Kim Han-Jun Oh Department of Chemistry Hanseo University School of Advanced Materials Engineering Sungkyunkwan University Department of Materials Science Hanseo University

To improve the photocatalytic efficiency of TiO2nanotubular catalyst,N doped and Pd decorated titania nanotubes was successfully synthesized via anodizing,hydrazine hydrate treatment and photoreduction of Pd *** small Pd nanoparticles were precipitated on TiO2nanotubes through photoreduction of Pd ions,and its distribution is relatively *** X-ray photoelectron spectrometry（XPS） result,the N 1s spectrum represents two peaks with binding energy at 399.7 and 400.7 eV,which suggests that the nitrogen elements doped by hydrazine hydrate treatment are located in interstitial sites of the TiO2crystalline *** N doped TiO2nanotubes with Pd particles,a high photocurrent was detected due to increase of interface charge carrier separation ***,N doped and Pd decorated TiO2nanotubes exhibited much higher dye destruction efficiency and rate constant due to the synergistic effect of the N dopant and the Pd deposition on TiO2nanotubes.

关键词： Pd nanoparticle Titania nanotube Anodizing Dye dec

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An Anionic Covalent Organic Framework as an Electrostatic Molecular Rectifier for Stabilizing Mg Metal Electrodes

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CCS Chemistry 2023年第11期5卷 2567-2575页

作者： Zhongping Li Hyunseok Moon seok-Kyu Cho Changqing Li jeong-Min Seo jong-Beom Baek Hong Xu Sang-Young Lee Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03772 School of Energy and Chemical Engineering Ulsan National Institute of Science and TechnologyUlsan 44919 UBATT Inc. Daejeon 34036 Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084

Despite its potential as a high-capacity battery electrode,magnesium(Mg)metals are highly susceptible to electrolytes,resulting in the formation of unwanted passivation layers,which hinder charge transfer ***,we first report an anionic covalent organic framework(a-COF)as an electrostatic molecular rectifier(that can preferentially trap solvent molecules)to stabilize Mg metal *** to a neutral COF(n-COF)as a control sample,the a-COF enhances Mg^(2+)transport by facilitating the desolvation of Mg^(2+)-solvent complexes and cationic mobility through its negatively charged one-dimensional columns,thereby achieving an ionic conductivity eight times higher than that of the *** addition,the anionic porous frameworks in contact with Mg metal electrodes enable a uniform Mg^(2+)flux and interfacial stability with Mg metal ***,the a-COF exhibited reversible Mg plating/stripping cyclability on Mg metal electrodes compared to the n-COF,demonstrating the electrochemical viability of the anionic frameworks for Mg metal electrode stabilization.

关键词： anionic covalent organic framework Mg metal electrodes ion transport interfacial stability Mg plating/stripping

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Impregnation approach for poly(vinylidene fluoride)/tin oxide nanotube composites with high tribological performance

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Journal of Materials Science & Technology 2020年第2期37卷 19-25页

作者： Min Su Park Jin Kyu Kim Tong-seok Han Jung Tae Park jong Hak Kim Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul03722Korea Department of Civil and Environmental Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul03722Korea Department of Chemical Engineering Konkuk University120 Neungdong-roGwangjin-guSeoul05029Korea

We report a composite material with the high tribological performance,which consists of onedimensional SnO2 nanotubes(ST)and a high molecular weight poly(vinylidene fluoride)(PVDF)matrix in terms of *** of PVDF in N,N-dimethylformamide(DMF)resulted in a facile penetration of PVDF into the inner hollow voids of ST,leading to the close *** between PVDF and ST results in a beneficial effect on the chain arrangement of PVDF,providing anα-phase with better tribological *** ST incorporation,the friction coefficient decreased by 85.0%to 0.408,and the specific wear rate decreased by 69.1%to 0.412,demonstrating the pivotal role of ST as a self-lubricating material due to a large interactive area and PVDF chain rearrangement.

关键词： SnO2 nanotube Composite Friction coefficient Wear rate

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Long-term clinical outcome between beta-blocker with ACEI or ARB in patients with NSTEMI who underwent PCI with drug-eluting stents

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Journal of Geriatric Cardiology 2019年第3期16卷 280-290页

作者： Yong Hoon Kim Ae-Young Her Eun-seok Shin Myung Ho jeong Division of Cardiology Department of Internal MedicineKangwon National University School of MedicineChuncheonSouth Korea Division of Cardiology Department of Internal MedicineUlsan Medical CenterUlsan HospitalUlsanSouth Korea Chonnam National University Hospital GwangjuSouth Korea

Background Because limited comparative data are available,we decided to compare 2-year major clinical outcomes between beta-blockers (BB) with angiotensin converting enzyme inhibitors (ACEI) and BB with angiotensin receptor blockers (ARB) therapy in patients with non-ST-segment elevation myocardial infarction (NSTEMI) after percutaneous coronary intervention (PCI) with drug-eluting stents (DES).Methods A total 11,288 NSTEMI patients who underwent PCI with DES were enrolled and they were divided into two groups,the BB with ACEI group (n = 7600) and the BB with ARB group (n = 3688).The major clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death,recurrent myocardial infarction (re-MI),total revascularization [target lesion revascularization (TLR),target vessel revascularization (TVR),non-TVR] rate during the 2-year follow-up *** After propensity score-matched (PSM) analysis,two PSM groups (3317 pairs,n = 6634,C-statistic = 0.695) were *** the cumulative incidences of all-cause death,cardiac death,TLR,and non-TVR were similar between the two groups,MACE (HR = 0.832,95% CI: 0.704?0.982,P = 0.030),total revascularization rate (HR = 0.767,95% CI: 0.598?0.984,P = 0.037),and TVR rate (HR = 0.646,95% CI: 0.470?0.888,P = 0.007) were significantly lower in the BB with ACEI group after *** In this study,we suggest that the combination of BB with ACEI may be beneficial for reducing the cumulative incidences of MACE,total revascularization rate,and TVR rather than the BB with ARB after PCI with DES in NSTEMI patients.

关键词： Angiotensin converting enzyme inhibitor Angiotensin receptor blocker Beta-blocker Myocardial infarction

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Simulation of Suspended Sediment in the Yellow and East China Seas

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China Ocean Engineering 2005年第2期19卷 235-250页

作者： CHOI Byung-Ho MUN jong-Yoon KO Jin-seok YUK Jin-Hee Department of Civil and Environmental Engineering Sungkyunkwan University Suwon 440-746 KoreaKorea Ocean Science and Engineering Corporation 175-9 Huam-dong Yongsan-gu Seoul 140-901 KoreaHyein Engineering and Construction Co. Ltd. 150-057 761 Shingil 7 dong Yungdungpogu Seoul KoreaDepartment of Civil and Environmental Engineering Sungkyunkwan University Suwon 440-746 Korea

Described is an initial attempt to simulate the suspended sediment dynamics relating to tidal and wave forcing during summertime in June 1980 and August 1981 for the Yellow and East China Seas continental shelf. The cohesive/non-cohesive sediment resuspension and movement generated by the interaction between current and wave are modeled by use of ECOMSED and WAM Cycle 4. Model results are compared with observations in US-China Marine Sedimentation Dynamics Program performed for 1980-81 at off the Changjiang estuary. The main features of simulations show that suspended sediment concentrations during the summer decreased markedly offshore as observed during the simulation periods. As for some discrepancies for the mouth of the estuary with high river discharges, i.e., the Changjiang River, the model did not properly reproduce the over-mixing situation in the summer; thus distinct vertical concentration variation in this local region is not agreeable with observation. However, general dispersal patterns of suspended sediment movement seem to be agreeably reproduced for the nearshore shallow region. Some of the procedures of simulation and results are presented and discussed.

关键词： Yellow Sea East China Sea sediment transport model time slice experiment sediment concentration

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