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A Regional Economy's Resistance to the COVID-19 Shock: Sales Revenues of Micro-, Small-, and Medium-Sized Enterprises in South Korea

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International Journal of Disaster Risk Science 2022年第2期13卷 190-198页

作者： Seong-Jin Lee joong-Hoo park Seung-min Cha Donghyun Kim Department of Public Policy and Management.Pusan National University Busan 46241South Korea Department of Urban Planning and Engineering Pusan National UniversityBusan 46241South Korea

The coronavirus disease 2019(COVID-19) is a global pandemic that has heavily impacted not only the health sector, but also the economic sector in *** countries have projected a negative economic impact, and the effect on micro-, small-, and medium-sized enterprises(MSMEs) is predicted to be significantly *** study estimated the regional resistance of MSME sales revenues and identified the regional economic factors that affect resistance by analyzing South Korea, a country with one of the lowest economic impact projections from COVID-19. Resistance was estimated by comparing sales revenues and changes in resistance observed during the early COVID-19 period to those recorded in the same weeks(weeks 6 to 9) of 2019. The factors that affect regional resistance were determined by conducting robust regression and spatial regression analyses. The results show that the number of confirmed COVID-19 cases, a direct risk factor, is negatively related to regional resilience, while diversity is positively related to regional resistance. To improve the regional resistance against uncertain events, this study recommends increased diversity among regional industrial structures to reduce the duration of the early shock of an unexpected adverse event.

关键词： COVID-19 Economic resistance MSMEs South Korea

Eosinophilic gastroenteritis presenting as small bowel obstruction: A case report and review of the literature

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World Journal of Gastroenterology 2007年第11期13卷 1758-1760页

作者： min Young Yun Young Up Cho In Suh park Sun Keun Choi Sei joong Kim Seok Hwan Shin Kyung Rae Kim Department of Surgery College of Medicine Inha University Incheon Korea Department of Pathology College of Medicine Inha University Incheon Korea

Eosinophilic gastroenteritis is a rare disease of unknown etiology. It is characterized by eosinophilic infiltration of the bowel wall to a variable depth and symptoms associated with gastrointestinal tract. Recently, the authors experienced a case of eosinophilic gastroenteritis presenting as small bowel obstruction. A 51-year old woman was admitted to our hospital complaining of abdominal pain and vomiting. Physical examination revealed a distended abdomen with diffuse tenderness. Complete blood count showed mild leukocytosis without eosinophilia. Computed tomography confirmed a dilatation of the small intestine with ascites. An emergency laparotomy was performed for a diagnosis of peritonitis due to intestinal obstruction. Segmental resection of the ileum and end to end anastomosis were performed. Histologically, there was a dense infiltration of eosinophils throughout the entire thickness of ileal wall and eosinophilic enteritis was diagnosed. The patient recovered well, and was free from gastrointestinal symptoms at the time when we reported her disease.

关键词： Eosinophilic gastroenteritis Small bowel obstruction Eosinophilic infiltration

Employment of encapsulated Si with mesoporous TiO_2 layer as anode material for lithium secondary batteries

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中国有色金属学会会刊：英文版 2009年第4期19卷 1023-1026页

作者： Sang-Eun park Bo-Eun KIM Sang-Wha LEE joong-Kee LEE Advanced Energy Materials Processing Laboratory Korea Institute of Science and Technology Department of Chemical & Bio Engineering Kyungwon University

Silicon composite of nano-capsule type is newly applied as an active anode material for lithium ion ***2-encapsulated silicon powders were synthesized by a sol-gel reaction with titanium *** nanoparticles were successfully embedded into porous titanium oxide capsules that played as a buffer layer against drastic volume changes of silicon during the charge-discharge cycling,consequently leading to the retardation of the capacity fading of intrinsic silicon *** electrochemical and structural properties of silicon nanocomposites with different surface areas of encapsulating TiO2 layer were characterized by X-ray diffraction(XRD),nitrogen gas adsorption analysis by the Brunauer-Emmett-Teller(BET) equation,transmission electron microscopy(TEM),and galvanostatic charge-discharge experiments.

关键词：二氧化钛硅材料锂二次电池负极材料封装纳米复合材料透射电子显微镜就业

EFFECT OF FABRICATION ON HIGH CYCLE FATIGUE PROPERTIES OF COPPER THIN FILMS

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Acta Mechanica Solida Sinica 2008年第4期21卷 318-326页

作者： Jun-Hyub park joong-Hyok An Yun-Jae Kim Hyeon-Chang Choi Department of Mechatronics Engineering College of EngineeringTongmyong University535Yongdang-DongNam-GuBusan608-711Korea Department of Mechanical Engineering College of EngineeringKorea UniversityAnam-dong Seongbuk-GuSeoul136-701Korea

The influence of fabrication on the tensile and fatigue behavior of copper films manufactured by 3 kinds of fabrication methods was investigated. The tensile and high cycle fatigue tests were performed using the test machine developed by authors. Young＇s moduli （72, 71 and 69 GPa, respectively） are lower than the literature values （108-145 GPa）, while the yield strengths were as high as 358, 350 and 346 MPa, respectively and the ultimate strengths as 462, 456 and 446 MPa, respectively. There is not much difference in the tensile properties of the 3 kinds of films. There is little difference in the fatigue properties of the 3 kinds of films but one of them has shorter fatigue life than others in high cycle region and longer fatigue life than others in low cycle region.

关键词： mechanical properties thin film copper high cycle fatigue test

Optical Gain Analysis of Graded InGaN/GaN Quantum-Well Lasers

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Chinese Physics Letters 2011年第7期28卷 319-322页

作者： Seoung-Hwan park Yong-Tae Moon Jeong Sik Lee Ho Ki Kwon joong Seo park Doyeol Ahn Department of Electronics Engineering Catholic University of DaeguHayangKyeongsanKyeongbuk 712-702Republic of Korea SLED R&D Center LG Innotek16 Woomyeon-dongSeocho-guSeoul 137-140Republic of Korea Department of Electrical and Computer Engineering University of SeoulSeoul 130-743Republic of Korea

Optical properties of graded InGaN/GaN quantum well(QW)lasers are analyzed as improved gain media for laser diodes emitting near 500 *** results are compared with those of conventional InGaN/GaN QW *** heavy-hole effective mass around the topmost valence band is found to nearly not be affected by the inclusion of the graded *** graded InGaN/GaN QW structure shows a much larger matrix element than the conventional InGaN/GaN QW *** radiative current density dependences of the optical gain are similar to each ***,the graded QW structure is expected to have lower threshold current density than the conventional QW structure because the former has a lower threshold carrier density than the latter.

关键词： InGaN/GaN graded Lasers

Characteristics of Atmospheric Circulation Associated with Cold Surge Occurrences in East Asia:A Case Study During 2005/06 Winter

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Advances in Atmospheric Sciences 2008年第5期25卷 791-804页

作者： Tae-Won park Jee-Hoon JEONG Chang-Hoi HO Seong-joong KIM School of Earth and Environmental Sciences Seoul National University Seoul Korea Department of Earth Sciences University of Gothenburg Gothenburg Sweden Korea Polar Research Institute Incheon Korea

The characteristics of the upper-level circulation and thermodynamical properties for the period when two distinct cold surges broke out over East Asia during the 2005/06 winter are investigated. From early December 2005 to early January 2006, exceptionally cold weather lasted for approximately one month due to two successive cold surges that took place on 2 December 2005 and 2 January 2006, respectively. This study reveals that both involve the upper-tropospheric circulation, which induces the amplification and expansion of the surface Siberian high toward East Asia, but arose from different causes： the former is caused by the upper-level blocking originated from the North Pacific and the latter is caused by the upper-level wave train across the Eurasian Continent. In particular, it is suggested that the lower-tropospheric anomalous wind caused by upper-level circulation anomalies and a steep meridional temperature gradient amplified by phase-locked annual cycle combined to induce very strong cold advection in East Asia, which resulted in exceptionally cold weather that lasted for several weeks. The present results emphasize that the characteristics of the upper-tropospheric circulation can be considered as important precursors to cold surge occurrences in East Asia.

关键词： cold surge Siberian high East Asia East Asian winter monsoon upper-tropospheric circulation

Length of negative resection margin does not affect local recurrence and survival in the patients with gastric cancer

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World Journal of Gastroenterology 2014年第30期20卷 10518-10524页

作者： Chang min Lee Ye Seob Jee Ju-Hee Lee Sang-Yong Son Sang-Hoon Ahn Do joong park Hyung-Ho Kim Department of Surgery Seoul National University Bundang HospitalSeongnam 463-707South Korea Department of Surgery Dankook University HospitalCheonan 330-715South Korea Colledge of Medicine Dankook UniversityCheonan 330-715South Korea Department of Surgery Hanyang University Medical CenterSeoul 133-792South Korea Colledge of Medicine Seoul National UniversitySeoul 110-799South Korea

AIM: To investigate the influence of the resection margin on local recurrence and survival in gastric cancer patients.

关键词： Gastric cancer Survival Recurrence Resection Margin

Stable Zn Metal Anodes with Limited Zn-Doping in MgF_(2) Interphase for Fast and Uniformly Ionic Flux

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Nano-Micro Letters 2022年第3期14卷 169-183页

作者： Ji Young Kim Guicheng Liu Ryanda Enggar Anugrah Ardhi Jihun park Hansung Kim joong Kee Lee Energy Storage Research Center Korea Institute of Science and TechnologyHwarang‑ro 14‑gil 5Seongbuk‑guSeoul 02792Republic of Korea Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei‑roSeodaemun‑guSeoul 03722Republic of Korea Department of Physics Dongguk UniversitySeoul 04620Republic of Korea APC Technology 10868 Gangbyeonyeok‑ro‑4‑gilGwangjin‑guSeoul 05116Republic of Korea Department of Energy and Environmental Engineering KIST SchoolKorea University of Science and TechnologyHwarang‑ro 14‑gil 5Seongbuk‑guSeoul 02792Republic of Korea

The practical applications of aqueous Zn metal batteries are currently restricted by the inherent drawbacks of Zn such as the hydrogen evolution reaction,sluggish kinetics,and dendrite *** address these problems,herein,a limitedly Zn-doped MgF_(2)interphase comprising an upper region of pure,porous MgF_(2)and a lower region of gradient Zn-doped MgF_(2)is achieved via radio frequency sputtering *** porous MgF_(2)region is a polar insulator whose high corrosion resistance facilitates the de-solvation of the solvated Zn ions and suppression of hydrogen evolution,resulting in Zn metal electrodes with a low interfacial *** Zn-doped MgF_(2)region facilitates fast transfer kinetics and homogeneous deposition of Zn ions owing to the interfacial polarization between the Zn dopant and MgF_(2)matrix,and the high concentration of the Zn dopant on the surface of the metal substrate as fine ***,a symmetric cell incorporating the proposed Zn metal exhibits low overpotentials of~27.2 and~99.7 mV without Zn dendrites over 250 to 8000 cycles at current densities of 1.0 and 10.0 mA cm−2,*** developed Zn/MnO2 full cell exhibits superior capacity retentions of 97.5%and 84.0%with average Coulombic efficiencies of 99.96%after 1000 and 3000 cycles,respectively.

关键词： Zinc metal battery MgF_(2)layer Limited zinc doping Ion-transfer kinetic Deposition guidance

Isolated pancreatic metastasis of hepatocellular carcinoma after curative resection

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World Journal of Gastrointestinal Oncology 2010年第4期2卷 209-212页

作者： Sang Myung Woo joong-Won park Sung-Sik Han Joon-Il Choi Woo Jin Lee Sang Jae park Eun Kyung Hong Chang-min Kim Center for Liver Cancer National Cancer Center809 Madu 1-dongIlsandong-guGoyangGyeonggi 411-769South Korea

Hepatocellular carcinoma(HCC)is a highly malignant tumor and extrahepatic metastasis is not *** most common organ of HCC metastasis is lung,followed by bone and adrenal *** the best of our knowledge,isolated pancreatic metastasis of HCC that developed after curative resection has not been described *** report a case of solitary pancreatic metastasis of HCC,which was found 28 mo after left hemihepatectomy for *** lesion was successfully resected with the pancreas,and no other metastatic lesions have been found in follow-up.

关键词： Hepatocellular carcinoma Pancreas Metastasis