检索结果-南通市图书馆

World Journal of Gastroenterology 2009年第41期15卷 5232-5235页

作者： Jaejun Shim Jae Young Jang Young Hwangbo Seok Ho Dong joo hyeong oh Hyo Jong Kim Byung-Ho Kim Young Woon Chang Rin Chang Department of Internal Medicine Kyung Hee University School of Medicine Hoegi-dong 1 Dongdaemoongu Seoul 130-702 South Korea Department of Diagnostic Radiology Kyung Hee University School of Medicine Hoegi-dong 1 Dongdaemoon-gu Seoul 130-702 South Korea

Spontaneous or traumatic intramural bleeding of the esophagus, which is often associated with overlying mucosal dissection, constitutes a rare spectrum of esophageal injury called dissecting intramural hematoma of the esophagus (DIHE). Chest pain, swallowing diffi culty, and minor hematemesis are common, which resolve spontaneously in most cases. This case report describes a patient with spontaneous DIHE with recurrent massive bleeding which required critical management and highlights a potential role for therapeutic angiography as an alternative to surgery.

关键词： Esophagus Intramural hematoma Therapeutic angiography

Pulsed laser interference patterning of transition-metal carbides for stable alkaline water electrolysis kinetics

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

Carbon Energy 2024年第5期6卷 65-80页

作者： Yewon oh Jayaraman Theerthagiri Ahreum Min Cheol joo Moon Yiseul Yu Myong Yong Choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinjuRepublic of Korea Core−Facility Center for Photochemistry and Nanomaterials Gyeongsang National UniversityJinjuRepublic of Korea

We investigated the role of metal atomization and solvent decomposition into reductive species and carbon clusters in the phase formation of transition-metal carbides(TMCs;namely,Co_(3)C,Fe_(3)C,TiC,and MoC)by pulsed laser ablation of Co,Fe,Ti,and Mo metals in *** interaction between carbon s-p-orbitals and metal d-orbitals causes a redistribution of valence structure through charge transfer,leading to the formation of surface defects as observed by X-ray photoelectron *** defects influence the evolved TMCs,making them effective for hydrogen and oxygen evolution reactions(HER and OER)in an alkaline ***_(3)C with more oxygen affinity promoted CoO(oh)intermediates,and the electrochemical surface oxidation to Co_(3)O_(4)was captured via in situ/operando electrochemical Raman probes,increasing the number of active sites for OER *** with more d-vacancies exhibits strong hydrogen binding,promoting HER kinetics,whereas Fe_(3)C and TiC with more defect states to trap charge carriers may hinder both OER and HER *** results show that the assembled membrane-less electrolyzer with Co_(3)C∥Co_(3)C and MoC∥MoC electrodes requires~2.01 and 1.99 V,respectively,to deliver a 10 mA cm−2 with excellent electrochemical and structural *** addition,the ascertained pulsed laser synthesis mechanism and unit-cell packing relations will open up sustainable pathways for obtaining highly stable electrocatalysts for electrolyzers.

关键词： acetone H_(2)and O_(2)evolution reactions pulsed laser ablation surface defects transition-metal carbides water electrolyzer

Electrokinetic-mechanism of water and furfural oxidation on pulsed laser-interlaced Cu_(2)O and CoO on nickel foam

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

Journal of Energy Chemistry 2024年第4期91卷 145-154页

作者： Yewon oh Jayaraman Theerthagiri M.L.Aruna Kumari Ahreum Min Cheol joo Moon Myong Yong Choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Department of Chemistry The Oxford College of ScienceBengaluruKarnataka 560102India Core-Facility Center for Photochemistry&Nanomaterials Gyeongsang National UniversityJinju 52828Republic of Korea

The electrocatalytic oxidation of biomass-derived furfural(FF)feedstocks into 2-furoic acid(FA)holds immense industrial potential in optics,cosmetics,polymers,and ***,we fabricated Co O/Ni O/nickel foam(NF)and Cu_(2)O/Ni O/NF electrodes via in situ pulsed laser irradiation in liquids(PLIL)for the bifunctional electrocatalysis of oxygen evolution reaction(OER)and furfural oxidation reaction(FOR),*** oxidation of NF surface to NiO and deposition of CoO and/or Cu_(2)O on NF during PLIL offer distinct advantages for enhancing both the OER and ***/NiO/NF electrocatalyst provides a consistently low overpotential of~359 m V(OER)at 10 m A/cm^(2),achieving the maximum FA yield(~16.37 m M)with 61.5%selectivity,79.5%carbon balance,and a remarkable Faradaic efficiency of~90.1%during 2 h of FOR at 1.43 V(*** hydrogen electrode).Mechanistic pathway via in situ electrochemical-Raman spectroscopy on CoO/NiO/NF reveals the involvement of phase transition intermediates(NiOoh and CoOoh)as surface-active centers during electrochemical *** carbonyl carbon in FF is attacked by hydroxyl groups to form unstable hydrates that subsequently undergo further oxidation to yield FA *** method holds promise for large-scale applications,enabling simultaneous production of renewable building materials and fuel.

关键词： Pulsed laser irradiation in liquids Water and furfural oxidation In situ Raman spectroscopy CoO/NiO/nickel foam Cu_(2)O/Nio/nickel foam 2-furoic acid

Evaluation of the Mrp2-mediated flavonoid-drug interaction potential of quercetin in rats and in vitro models

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Pharmaceutical Sciences 2019年第6期14卷 621-630页

作者： Ju-Hee oh joo Hyun Lee Young-joo Lee Division of Biopharmaceutics College of PharmacyKyung Hee UniversitySeoul 02447Republic of Korea Department of Life and Nanopharmaceutical Sciences College of PharmacyKyung Hee UniversitySeoul 02447Republic of Korea

Quercetin is a biologically active flavonoid that has been used as a popular health *** is reported that quercetin may cause flavonoid-drug interaction mediated by P-glycoprotein,the most predominant efflux *** this study,we comprehensively evaluated the potential of the pharmacokinetic interaction of quercetin mediated by multidrug resistance-associated protein 2(MRP2),another major efflux ***2-transfected MDCKII cells and LS174T cells were used to evaluate the potential inhibition and induction of MRP2 by quercetin in *** evaluate the induction effect of quercetin on Mrp2 in vivo,Mrp2 mRNA expression in rat liver,kidney,and small intestinal tissues was determined after the oral administration of quercetin(50,100,or 250 mg/kg)for seven ***2-mediated interaction potential was also evaluated by the pharmacokinetic study of phenolsulfonphthalein in rats after single or multiple doses of ***,the effect of quercetin on absorption of docetaxel,a P-glycoprotein and CYP3A4 substrate,was also *** inhibited the function of MRP2 at 10μM and induced the mRNA expression of MRP2 at 50μM in ***,at 100 mg/kg,quercetin markedly increased Mrp2 expression in the small intestine of ***,there was no significant change in phenolsulfonphthalein pharmacokinetics due to single-(50,100,or 250 mg/kg)or multiple-dose(50,100,or 250 mg/kg for seven days)quercetin *** contrast,a significant interaction caused by quercetin(100 mg/kg)was observed in the absorption of *** results suggested that although quercetin modulates the function and expression of MRP2 in vitro,it may have a low potential of Mrp2-mediated interaction and present negligible safety concerns related to the interaction.

关键词： Quercetin P-glycoprotein Multidrug resistance-associated protein 2 Pharmacokinetics Flavonoid-drug interaction

Selective catalytic NO_x reduction on Antimony promoted V_2O_5-Sb/TiO_2 catalyst

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2006年第Z2期25卷 84-88页

作者： HA Heon Phil CHUNG Soon Hyo oh Young joo Metal Processing Research Center Korea Institute of Science and Technology Cheongryang Seoul 130-650 Republic of Korea

Quantum chemical calculation was carried out to choose a promoter which can reduce the poisoning of V2O5/TiO2 catalysts by SO2. Several atoms were chosen as candidates and new catalysts were synthesized by impregnation method. The NOx conversion rate was measured at temperatures between 100 and 400 ℃ and poisoning effect was investigated. The most promising candidate promoter, Se, was excluded because of its high vapor pressure. On the other hand, Sb shows best promoting properties. Sb promoted catalyst reaches the maximum NOx conversion rate at 250 ℃. It also shows considerably enhanced resistance to poisoning of V2O5/TiO2 catalysts by SO2.

关键词： De NOx selective catalytic reduction SO2 poisoning low temperature activity

Development and application of quantitative detection method for nervous necrosis virus(NNV) isolated from sevenband grouper Hyporthodus septemfasciatus

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2016年第8期9卷 720-726页

作者： Jong-oh Kim Jae-Ok Kim Wi-Sik Kim Myung-joo oh Department of Aqualife Medicine College of Fisheries and Ocean Science Chonnam National University

Objective:To develop the rapid and efficient quantitative detection tool for nervous necrosis virus isolated from sevenband grouper Hyporhodus ***:The viral genes of the NNV(SGYeosu08) isolated from sevenband grouper were phylogenetically *** addition,novel quantitative PCR primers based on the genomic sequence of SGYeosu08 isolate were designed and compared it with the conventional bio-assay method(TCID_(50)) using in vitro and in vivo ***:The phylogenetic analysis of viral genes demonstrated the relationship of SGYeosu08 with members of red-spotted grouper nervous necrosis virus(RGNNV).The qNNV_Rl primer set(R1_F and R1_R) and the qNNV_R2 primer set(R2_F and R2_R) revealed 93%primer efficiency(regression:y=-0.2861 x + 9.9401,R^2= 0.9976)and the revealed 108%primer efficiency(regression:y=-0.3172 x + 10.0611,R^2= 0.9982),*** comparison with viral infectivity calculated by TCID_(50) method showed similar kinetic pattern at in vitro and NNV challenged fish(in vivo) ***:Result show that this method is rapid and efficient to diagnose NNV infection compare to traditional bioassay method(TCID_(50)).

关键词： Nervous necrosis virus(NNV) Quantitative detection Diagnostic Sevenband grouper

Microstructure analyses and phase-field simulation of partially divorced eutectic solidification in hypoeutectic Mg-Al Alloys

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

Journal of Magnesium and Alloys 2022年第6期10卷 1672-1679页

作者： joo-Hee Kang Jiwon Park Kyung Song Chang-Seok oh Oleg Shchyglo Ingo Steinbach Korea Institute of Materials Science Changwon 51508Republic of Korea Interdisciplinary Centre for Advanced Materials Simulation Ruhr-University Bochum44801 BochumGermany

In this study the partially divorced eutectic microstructure ofα-Mg andβ-Mg17Al12was investigated by electron backscatter diffraction,transmission electron microscopy,and phase-field modeling in hypoeutectic Mg-Al *** orientation relationships between the individual eutecticαgrains,eutecticβphase,and primaryαgrains were *** the amount of eutectic morphology is primarily determined by the Al content,the in-depth microstructure analyses and the phase-field simulation suggest non-interactive nucleation and growth of eutecticαphase in theβphase grown on the interdendritic primaryα***,phase-field simulations showed a preferred nucleation sequence where theβphase nucleates first and subsequently triggers the nucleation of eutecticαphase at the movingβphase solidification front,which supports the microstructural analysis results.

关键词： Mg-Al alloy Partially divorced eutectic Solidification Electron backscatter diffraction Phase-Field modeling

Plasmid DNA-loaded asymmetrically porous membrane for guided bone regeneration

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第4期63卷 161-171页

作者： Se Heang oh June-Ho Byun So Young Chun Young-joo Jang Jin Ho Lee Department of Nanobiomedical Science Dankook UniversityCheonan 31116Republic of Korea Department of Oral and Maxillofacial Surgery Gyeongsang National University School of MedicineGyeongsang National University HospitalInstitute of Health SciencesGyeongsang National UniversityJinju 52727Republic of Korea BioMedical Research Institute Kyungpook National University HospitalDaegu 41404Republic of Korea Department of Advanced Materials Hannam UniversityDaejeon 34054Republic of Korea

Although bone defects can be restored spontaneously,bone reconstruction with sufficient strength and volume continues to be a challenge in clinical *** recent years,the use of a variety of biomaterials with bioactivity has been attempted to compensate for this ***,we fabricated a pDNA(encoding for BMP-2)-loaded asymmetrically porous polycaprolactone(PCL)/Pluronic F127 membrane as a bioactive guided bone regeneration(GBR)membrane,using a modified immersion-precipitation *** was observed that the GBR membrane allows continuous release of pDNA for more than20 *** pDNA was sufficiently transfected into human bone marrow stem cells(h BMSCs)without significant cytotoxicity and the gene-transfected cells showed prolonged synthesis of *** in vitro osteogenic differentiation and in vivo animal studies,the effective induction of osteogenic differentiation of h BMSCs and enhanced bone regeneration by the pDNA-loaded asymmetrically porous PCL/Pluronic F127 membrane was observed,suggesting that the pDNA-loaded membrane as a bioactive GBR membrane can be an alternative therapeutic technique for effective bone regeneration.

关键词： loaded porous attempted

Influences of diel and tidal cycles on fish assemblage in eelgrass(Zostera marina) bed of southern Korea during autumn

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2018年第4期37卷 40-47页

作者： KWAK Seok Nam PARK joo Myun IM Seong oh JAWAD Laith A. Environ-Ecological Engineering Institute Co. Ltd. Busan 48280 Republic of Korea Department of Biological Sciences Macquarie University Sydney NSW 2109 Australia Department of Marine Bioscience Gangneung-Wonju National University Gangneung 25457 Republic of Korea Korea Marine Environment Management Corporation Seou105718 Republic of Korea Flat Bush Manukau Auckland 2016 New Zealand

Short-term tidal and diel variations of autumn fish assemblage in a Zostera marina bed were investigated using 3 h interval samplings for 24 h in both spring and neap tide using a small beam trawl.A total of 1 346 fishes belonging to 19 species were collected at spring tide,whereas 1 115 fishes belonging to 17 species were at neap *** common fish species were Nuchequula nuchalis,Acanthogobius flavimanus,Takifugu niphobles,Acentrogobius pflaumii,and Pholis nebulosa with the former three species dominating at spring tide,while the latter two species being abundant at neap *** variation in abundance was significant with higher abundance at night than day,but there were no significant differences between spring and neap tides,and between ebb and flood tides（three-way ANOVAs）.Diel variation in the abundance of fishes may be influenced by tidal range and cycle,and day-night differences of food availability and behaviors of fishes ***-metric multidimensional scaling（n MDS） ordination and analysis of similarity（ANOSIM） results revealed significant differences in species compositions both between day and night,and between spring and neap *** beds are highly productive marine ecosystem,and thus,our results will contribute to conservation of seagrass ecosystem in the study area.

关键词： tidal and diel variations fish assemblage eelgrass Zostera marina southern Korea

Radiolarians from the Pohang Basin,Southeast Korea and Paleoceanographic Implications

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2012年第6期86卷 1426-1433页

作者： Young-Suk BAK Jong-Deock LEE Hyesu YUN Jinyong oh Seong-joo LEE Kyungpook National University Chonbuk National University Chungnam National University

We identified a total of 101 species and two subspecies of radiolarians belonging to 56 genera from 95 samples collected from the Hagjeon and Duho Formations in the Pohang Basin of the southeastern Korean Peninsula. On the basis of the biostratigraphic range of Cyrtocapsella cornuta and Theocorys redondoensis, the depositional period of the upper Hagjeon and lowest Duho Formations was determined to be early to late Middle Miocene. The occurrence of deep-dwelling radiolarians indicates that the paleobathymetry seems to become gradually progressing toward an upper bathyal environment in the middle part of the Hagjeon Formation. However, we prefer to accept another interpretation for the occurrence of deep-sea indicators in the Hagjeon and the lowest part of the Duho Formations, and consider the presence of a region of upwelling cold water that might have simulated a deep-water environment in relatively shallow water. This interpretation is based on the present upwelling of a cold-water mass off the southeast coast of Korea, the occurrence of upwelling microfossils from the Pohang Basin, and the effect of the closing of the Korea Strait approximately 15 Ma. We also considered that the uppermost part of the studied section represents a shallow-water environment.

关键词： radiolarian depositional environment upweHing Pohang Basin