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Carbonyl compounds in dining areas,kitchens and exhaust streams in restaurants with varying cooking methods in Kaohsiung,Taiwan

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Journal of Environmental Sciences 2016年第3期28卷 218-226页

作者： Jen-Hsuan Cheng Yi-Shiun lee kang-Shin Chen Institute of Environmental Engineering "National" Sun Yat-Sen University

Eighteen carbonyl species in C_1-C_（10） were measured in the dining areas,kitchens and exhaust streams of six different restaurant types in Kaohsiung,southern *** results in the dining areas show that Japanese barbecue（45.06 ppb） had the highest total carbonyl concentrations（sum of 18 compounds）,followed by Chinese hotpot（38.21 ppb）,Chinese stir-frying（8.99 ppb）,Western fast-food（8.22 ppb）,Chinese-Western mixed style（7.38 ppb）,and Chinese buffet（3.08 ppb）,due to their different arrangements for dining and cooking spaces and different cooking *** average,low carbon-containing species（C_1-C_4）,e.g.,formaldehyde,acetaldehyde,acetone and butyraldehyde were dominant and contributed 55.01%-94.52%of total carbonyls in the dining areas of all ***,Chinese-Western mixed restaurants（45.48 ppb） had high total carbonyl concentrations in kitchens mainly because of its small kitchen and poor ***,high carbon-containing species（C_5-C_（10）） such as hexaldehyde,heptaldehyde and nonanaldehyde（16.62%-77.00%of total carbonyls） contributed comparatively with low carbon-containing compounds（23.01%-83.39%of total carbonyls） in ***,Chinese stir-frying（132.10 ppb）,Japanese barbecue（125.62 ppb）,Western fast-food（122.67 ppb）,and Chinese buffet（119.96 ppb） were the four restaurant types with the highest total carbonyl concentrations in exhaust streams,indicating that stir-frying and grilling are inclined to produce polluted *** risk assessments indicate that Chinese hotpot and Japanese barbecue exceeded the limits of cancer risk（10^（-6）） and hazard index（=1）,mainly due to high concentrations of *** other four restaurants were below both limits.

关键词： Carbonyl compounds Restaurant Exhaust stream Health effect

Risk of ischaemic stroke in patients with transient global amnesia: a propensity-matched cohort study

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Stroke & Vascular Neurology 2022年第2期7卷 101-107页

作者： Sang hun lee Keon-Yeup Kim Jeong-Woo lee So-Jeong Park Jin-Man Jung Department of Neurology Korea University Ansan HospitalKorea University College of MedicineAnsanRepublic of Korea Data Science Team Hanmi Pharm.Co.LtdSeoulRepublic of Korea Korea University Zebrafish Translational Medical Research Center AnsanRepublic of Korea

Background The exact pathophysiological mechanism of transient global amnesia(TGA)is *** is debatable whether TGA is a risk factor for ***,here we investigated the possibility of TGA as a risk factor for stroke in a real-world setting using large-scale nationwide health claims *** We used health claims data from the Korean National Health Insurance Service(NHIS).Patients diagnosed with TGA between 2007 and 2013 were *** initially extracted patients without TGA who were preferentially matched for age and sex with the patients with TGA at a ratio of 10:1 from the whole ***,we performed 1:2 propensity score matching analysis to balance the baseline characteristics between the two *** the propensity score-matched dataset,we performed multivariable Cox regression analysis to investigate the association between TGA and stroke type,including ischaemic,haemorrhagic and all stroke *** Patients with TGA(n=14673)were selected from the NHIS *** extracting from the whole database(n=140486)and propensity score matching their data at a 1:2 ratio,a total of 10448 and 20442 patients were finally assigned to the TGA and control groups,*** multivariable Cox regression analysis demonstrated that the TGA group had a higher risk of ischaemic stroke and all types of stroke(adjusted HR=1.194;95%CI:1.043 to 1.368;and HR=1.197;95%CI:1.056 to 1.357,respectively).Conclusions Analysis of the nationwide claims database showed that TGA could be an important risk factor for stroke,especially for ischaemic stroke.

关键词： patients matched transient

Attenuated FOLFIRINOX in the salvage treatment of gemcitabine-refractory advanced pancreatic cancer: a phase II study

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Cancer Communications 2018年第1期38卷 344-351页

作者： Jung Hoon Kim Sang-Cheol lee Sung Yong Oh Seo-Young Song Namsu lee Eun Mi Nam Soonil lee In Gyu Hwang Hyo Rak lee Kyu Taek lee Sang-Byung Bae Han Jo Kim Joung Soon Jang Do Hyoung Lim Hyun Woo lee Seok Yun kang Jung hun kang Department of Internal Medicine Institute of Health SciencesGyeongsang National University15 Jinju-daero 816beon-gilJinju 52727Republic of Korea Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University Hospital CheonanCheonan 31151Republic of Korea Department of Internal Medicine Dong-A University HospitalBusan 49201Republic of Korea Department of Internal Medicine Kangwon National University School of MedicineChuncheon 24289Republic of Korea Divsion of Hematology and Oncology Department of Internal MedicineSoonchunhyang University Hospital SeoulSeoul 04401Republic of Korea Department of Internal Medicine Ewha Womans UniversityCollege of MedicineSeoul 07985Republic of Korea Department of Internal Medicine Dankook University HospitalCheonan 31116Republic of Korea Department of Internal Medicine Chung-Ang UniversityCollege of MedicineSeoul 06973Republic of Korea Division of Hematology and Medical Oncology Department of Internal MedicineKorea Cancer HospitalSeoul 01812Republic of Korea Department of Hematology-Oncology Ajou University HospitalSuwon 16499Republic of Korea

Background:Combination therapy with oxaliplatin,irinotecan,fluorouracil,and leucovorin(FOLFIRINOX)chemotherapy drastically improves survival of advanced pancreatic cancer ***,the efficacy of FOLFIRINOX as a second-line treatment after gemcitabine failure has not been tested *** investigated the feasibility and safety of attenuated FOLFIRINOX in patients with gemcitabine-refractory advanced pancreatic ***:A multicenter phase II prospective open-label,single-arm study was conducted at 14 *** with histologically proven invasive ductal pancreatic adenocarcinoma,a measurable or evaluable lesion,Eastern Cooperative Oncology Group performance status 0 or 1,adequate organ function,and aged 19 years or older were *** FOLFIRINOX consisted of oxaliplatin 65 mg/m2,irinotecan 135 mg/m2,and leucovorin 400 mg/m2 injected intravenously on day 1 and 5-fluorouracil 2000 mg/m2 continuously infused intravenously over 46 h on days 1-2,repeated every 2 *** primary endpoint was progression-free survival from the initiation of *** endpoints were the objective response rate,disease control rate,overall survival,safety,and *** estimated overall survival and progression-free survival using the Kaplan-Meier ***:We enrolled 39 patients from 14 *** objective response rate was 10.3%,while the disease control rate was 64.1%.The 6-month and 1-year overall survival rates were 59.0%and 15.4%,*** progression-free survival and overall survival were 3.8 months(95%confidence interval[CI]1.5-6.0 months)and 8.5 months(95%CI 5.6-11.4 months),*** 3 or 4 adverse events were neutropenia(41.0%),nausea(10.3%),anorexia(10.3%),anemia(7.7%),mucositis(7.7%),pneumonia/pleural effusion(5.1%),and fatigue(5.1%).One treatment-related death attributable to septic shock ***:Attenuated FOLFIRINOX may be promising as a second-line therapy for gemcitabin

关键词： Attenuated FOLFIRINOX Second-line Pancreatic cancer Gemcitabine

Anti-inflammatory and anti-apoptotic effects of N-acetylcysteine in diabetic rat corneal epithelium

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International Journal of Ophthalmology(English edition) 2021年第12期14卷 1805-1812页

作者： Sae-Byeok Hwang Jin Hyoung Park Ji-Yun Park Soon-Suk kang Ho Seok Chung hun lee Jae Yong Kim hungwon Tchah Research Institute of Miso Eye Clinic Gyeonggi-do 13640Republic of Korea Biomedical Research Center Asan Institute for Life ScienceAsan Medical CenterSeoul 05505Republic of Korea Miso Eye Clinic Gyeonggi-do 13640Republic of Korea Department of Ophthalmology University of Ulsan College of MedicineSeoul 05505Republic of Korea Research Institute for Biomacromolecules University of Ulsan College of MedicineSeoul 05505Republic of Korea Department of Ophthalmology Dankook University HospitalDankook University College of MedicineCheonan 31116Republic of Korea

AIM:To characterize the anti-inflammatory and antiapoptotic effects of N-acetylcysteine(NAC)in streptozotocin(STZ)-induced diabetic rat corneal epithelium and human corneal epithelial cells(HCECs)exposed to a high-glucose ***:HCECs were incubated in 0,5,50 mmol/L glucose medium,or 50 mmol/L glucose medium with NAC for *** was induced in rats by intraperitoneal injection of 65 mg/kg STZ and some of these rats were topically administered NAC to corneas with 3 mice per *** characterized receptor for advanced glycation end-products(RAGE)expression using immunofluorescence,and interleukin(IL)-1βand cleaved caspase-3(CCAP-3)expression using *** tumor necrosis factor(TNF)-αconcentration was measured by ELISA and cleaved poly-ADP ribose polymerase(PARP)concentration was quantified by Western *** cells were detected using TUNEL assay and annexin V and propidium iodide ***:Diabetic rats had higher expression of RAGE(2.46±0.13 fold),IL-1β,and CCAP-3 in apoptotic cells of their corneas than control *** expression of RAGE(1.83±0.11 fold),IL-1β,and CCAP-3,and the number of apoptotic cells,were reduced by topical NAC *** incubated in 50 mmol/L glucose medium showed high concentrations of TNF-α(310±2.00 pg/mL)and cleaved PARP(7.43±0.56 fold),and more extensive apoptosis than cells in 50 mmol/L glucose ***,the addition of NAC reduced the concentrations of TNF-α(153.67±2.31 pg/mL)and cleaved PARP(5.55±0.31 fold)and the number of apoptotic ***:NAC inhibits inflammation and apoptosis in the corneas of diabetic rats and HCECs maintained in a high-glucose environment.

关键词： N-acetylcysteine apoptosis inflammation diabetes corneal epithelium rat

Pharmacokinetic comparison with different assays for simultaneous determination of cis-,trans-cefprozil diastereomers in human plasma

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Journal of Pharmaceutical Analysis 2021年第3期11卷 351-363页

作者： Seung-Hyun Jeong Ji-hun Jang Hea-Young Cho Yong-Bok lee College of Pharmacy Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea College of Pharmacy CHA University335 Pangyo-roBundang-guSeongnam-siGyeonggi-Do13488Republic of Korea

The purpose of this study was to compare pharmacokinetic(PK)parameters obtained using two newly developed assays,HPLC-UV and UPLC-ESI-MS/*** of assay and results obtained therefrom are very important in PK studies and can have a major impact on the PK-based clinical dose and usage *** this study,we developed two new methods that are most commonly used in biosample analysis and focused on PK parameters obtained from *** HPLC-UV equipped with a Luna-C8 column using UV detector,cefprozil diastereomers were separated using water containing 2%(V/V)acetic acid and acetonitrile as a mobile *** UPLC-ESI-MS/MS equipped with a HALO-C18 column,cefprozil diastereomers were separated using 0.5%(V/V)aqueous formic acid containing 5 mM ammoniumformate buffer and methanol as a mobile *** showed high resolution,sensitivity,and selectivity without interference by plasma *** intra-and inter-day precisions(CV,%)were within 8.88%for HPLC-UV and UPLC-ESI-MS/*** of both methods was 95.67%-107.50%.These two analytical methods satisfied the criteria of international guidance and could be successfully applied to PK *** of PK parameters between two assays confirmed that there is a difference in the predicted minimum plasma concentrations at steady state,which may affect clinical dose and usage ***,we confirmed possible correlation between PK parameters and various biochemical parameters after oral administration of 1000 mg cefprozil to humans.

关键词： Cefprozil diastereomers Comparison HPLC-UV UPLC-ESI-MS/MS Pharmacokinetic parameter Biochemical parameters

A FINITE ELEMENT SHALLOW WATER CIRCULATION MODEL FOR TOLO HARBOUR, HONG KONG

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Chinese Journal of Oceanology and Limnology 1984年第1期2卷 20-33页

作者： Joseph hun-wei lee Department Of Civil Ehgineering University of Hong Kong

Numerical solution of two-dimensional shallow water equations has been achieved by the finite element method. In this work, the governing equations were first converted into different equations suitable for explicit, forward marching, integration in the time domain. A second order Taylor’s series expansion was used for the continuity equation and an 'upwind' differencing was incorporated in the nonlinear convective terms in the momentum *** model was applied to Tolo Harbour in Hong Kong. Velocity vector plots and surface elevations obtained from the calculations are reasonably consistent with the expected tidal response of the systems.

关键词： HONG KONG A FINITE ELEMENT SHALLOW WATER CIRCULATION MODEL FOR TOLO HARBOUR 月卜 Bay

Evaluation of internal void related defects in reinforced concrete slab using electromagnetic wave properties

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 525-535页

作者： Minju kang Jinyoung Hong Taemin lee Doyun Kim Hajin Choi School of Architecture Soongsil UniversitySeoul 06978Republic of Korea

This study aims to develop a damage-detection algorithm based on the electromagnetic wave properties inside a reinforced concrete *** proposed method involves employing two algorithms based on data measured using ground-penetrating radar—a common electromagnetic wave method in civil *** possible defect area was identified based on the energy dissipated by the damage in the frequency-wavenumber domain,with the damage localized using the calculated relative permittivity of the *** proposed method was verified through a finite difference time-domain-based numerical analysis and a testing slab with artificial *** a result of verification,the proposed method quickly identified the presence of damage inside the concrete,especially for honeycomb-like defects located at the top of the *** study has practical significance in scanning structures over a large area more quickly than other non-destructive testing methods,such as ultrasonic methods.

关键词： GPR concrete defect electromagnetic wave relative permittivity non-destructive testing(NDT)

Laser transformation hardening on rod-shaped carbon steel by Gaussian beam

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中国有色金属学会会刊：英文版 2009年第4期19卷 941-945页

作者： Jong-Do KIM Myeong-Hoon lee Su-Jin lee Woon-Ju kang Division of Marine System Engineering College of Maritime SciencesKorea Maritime University Graduate School Korea Maritime University

Laser transformation hardening(LTH) is one of the laser surface modification *** surface hardening of rod-shaped carbon steel(SM45C) was performed by lathe-based laser composite processor with Gaussian-beam optical *** LTH characteristics by dominant processes,longitudinal and depth directional hardness distributions and behaviors of phase transformation in hardened zones were ***,two concepts of circumferential speed and theoretical overlap rate were *** laser power increased or circumferential speed decreased,the surface hardening depth gradually increases due to the increased heat ***,the longitudinal hardness distribution particularly shows periodicity of repetitive increase and decrease,which results from tempering effect by ***,the feasibility of laser transformation hardening is verified by using the beam with Gaussian intensity distribution.

关键词：激光相变硬化高斯光束碳素钢表面强化硬度分布圆周速度改性过程相变行为

Numerical simulation for dendrite growth in directional solidification using LBM-CA(cellular automata)coupled method

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Journal of Materials Science & Technology 2020年第14期47卷 15-24页

作者： Wonjoo lee Yuhyeong Jeong Jae-Wook lee Howon lee Seong-hoon kang Young-Min Kim Jonghun Yoon Department of Mechanical Design Engineering Hanyang University222Wangsimni-roSeongdong-guSeoul 04763Republic of Korea Materials Deformation Department Korea Institute of Materials Science797 ChangwondaeroSeongsan-guChangwon-siGyeongnam-do 51508Republic of Korea Department of Mechanical Engineering Hanyang University55 Hanyangdaehak-roSangnok-guAnsan-siGyeonggi-do 15588Republic of Korea

To predict the dendrite morphology and microstructure evolution in the solidification of molten metal,numerically,lattice Boltzmann method(LBM)-cellular automata(CA)model has been developed by integrating the LBM to solve the mass transport by diffusion and convection during solidification and the CA to determine the phase transformation with respect to the solid fraction based on the local equilibrium *** is successfully validated with analytic solutions such as Lipton-Glicksman-Kurz(LGK)model in static melt,and Oseen-Ivantsov solution under the fluid flow conditions in terms of tip radius and velocity of the dendrite *** proposed LBM-CA model does not only describe different types of dendrite formations with respect to various solidification conditions such as temperature gradient and growth rate,but also predict the primary dendrite arm spacing(PDAS)and the secondary dendrite arm spacing(SDAS),quantitatively,in directional solidification(DS)experiment with Ni-based superalloy.

关键词： Cellular automata(CA) Lattice Boltzmann method(LBM) Dendritic growth Directional solidification