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World Journal of Emergency Medicine 2023年第2期14卷 155-157页

作者： woo Sung Choi Sung Youl Hyun jae-Hyug woo jung Han Hwang Yong Su Lim Department of Emergency and Critical Care Medicine Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea Department of Traumatology Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea Department of Interventional Radiology Gachon University Gil Medical CenterGachon University College of MedicineIncheon 21565Republic of Korea

Dear editor,The incidence of renal infarction in patients admitted to the emergency department(ED) is approximately 0.004%.[1]Among patients with renal infarction, bilateral renal involvement has been reported in 28.6... 详细信息

关键词： traumatic infarction admitted

Anti-scarring effects of butaprost on human subconjunctival Tenon's fibroblasts

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International Journal of Ophthalmology(English edition) 2017年第7期10卷 1028-1033页

作者： Jong Hoon Shin Je Hyun Seo jae Ho jung Tae woo Kim Department of Ophthalmology Pusan National University Hospital Department of Ophthalmology Pusan National University Yangsan Hospital Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital Department of Ophthalmology Seoul National University College of MedicineSeoul National University Bundang Hospital

AIM： To investigate the toxicity of the E-prostanoid 2（EP2） receptor agonist, butaprost against human subconjunctival（Tenon＇s capsule） fibroblasts, and to determine the underlying mechanism. METHODS： We isolated Tenon＇s fibroblasts from the subconjunctival area of healthy subjects and evaluated the types of EP receptors expressed using quantitative realtime reverse transcription polymerase chain reaction（RTPCR）. The toxicity of butaprost against the fibroblasts was evaluated using methyl thiazolyl tetrazolium and lactic dehydrogenase assays. The inhibition of conjunctival fibroblast proliferation by butaprost was assessed by measuring α-actin levels. The underlying mechanism was assessed by measuring intracellular cyclic adenosine monophosphate（c AMP） levels. Intergroup differences were statistically analyzed using an independent t-test. Densitometry of the Western blot bands was performed using the Image J software. RESULTS： Quantitative real-time RT-PCR revealed that the fibroblast EP2 receptor levels were higher than those of the other EP receptors. Butaprost did not show toxicity against Tenon＇s tissue, but inhibited conjunctival fibroblast proliferation by reducing collagen synthesis. EP2 receptor activation enhanced the c AMP cascade, which might be an important mechanism underlying this ***： Butaprost effectively reduces the subconjunctival scarring response. Given the significanceof wound healing modulation in blebs, butaprost＇s inhibitory effect on subconjunctival Tenon＇s fibroblasts may be beneficial in managing postoperative scarring in glaucoma surgery.

关键词： butaprost Tenon's capsule trabeculectomy fibroblasts

k-Nearest Neighbor Query Processing Algorithms for a Query Region in Road Networks

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Journal of Computer Science & Technology 2013年第4期28卷 585-596页

作者： Hyeong-Il Kim jae-woo Chang Department of Computer Engineering Chonbuk National University Cloud Open R&D Center Chonbuk National University

Recent development of wireless communication technologies and the popularity of smart phones .are making location-based services （LBS） popular. However, requesting queries to LBS servers with users＇ exact locations may threat the privacy of users. Therefore, there have been many researches on generating a cloaked query region for user privacy protection. Consequently, an efficient query processing algorithm for a query region is required. So, in this paper, we propose k-nearest neighbor query （k-NN） processing algorithms for a query region in road networks. To efficiently retrieve k-NN points of interest （POIs）, we make use of the Island index. We also propose a method that generates an adaptive Island index to improve the query processing performance and storage usage. Finally, we show by our performance analysis that our k-NN query processing algorithms outperform the existing k-Range Nearest Neighbor （kRNN） algorithm in terms of network expansion cost and query processing time.

关键词： island index k-nearest neighbor query processing scheme locatiombased service road network

Microstructural Investigation of Alloy 617 Creep-ruptured at High Temperature in a Helium Environment

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Journal of Materials Science & Technology 2013年第12期29卷 1177-1183页

作者： Gyeong-Geun Lee Sujin jung jae-Young Park woo-Gon Kim Sung-Deok Hong Yong-Wan Kim Nuclear Materials Division Korea Atomic Energy Research Institute

A very high temperature reactor （VHTR） is one of the next-generation nuclear reactors chosen by the Generation IV International Forum. A Ni-base superalloy, Alloy 617, is considered as a primary candidate material for an intermediate heat exchanger （IHX） and hot gas duct （HGD） of the VHTR because of the superior creep resistance at a high temperature above 850 ~C. In this study, the microstructures of the specimens creep- ruptured at high temperatures in a helium environment were investigated. The decrease in rupture time was more pronounced with increasing creep temperature. In the specimens crept at 950 ~C, the external Cr-oxide layer of the specimens increased in thickness with increasing creep rupture time, and delaminated after a long-time creep. The high creep stress induced a deep penetration of carbide depletion along the grain boundaries at the early stage of the creep test. The creep temperature enhanced the growth rate of the decarburized zone depth clearly, but the temperature effect on the growth of the external oxide and internal oxide was not well understood as the surface reaction and creep stress affected the microstructures complexly.

关键词： Alloy 617 Microstructure Creep Helium Oxide

Non-Invasive Measurements of Thickness of Superconductor Films by Using Two-Resonant-Mode Rutile Resonator

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Chinese Physics Letters 2010年第8期27卷 203-206页

作者： jung Ho Sang YANG woo Il LEE jae Hun SOHN jae Min CHOO Kee Nam KIM Bong Goo LEE Sang Young Department of Physics and Center for Wireless Transmission Technology Konkuk University Seoul 143-701 Korea Research Reactor Engineering Division Korea Atomic Energy Research Institute Daejeon 305-600 Korea

The film thickness should be known for extrazting the intrinsic surface resistance from the effective surface resistance as measured by using the dielectric resonator method. Thicknesses of 70 nm to 360 nm are measured for YBa2 Cu3 O7-δ films in a non-invasive way by using the two-resonant-mode dielectric resonator （TDR） method. A futile resonator with the respective resonant frequencies of 15.25-15.61 GHz and 15.10-15.37 GHz for the TE021 and the TE012 modes is used for this purpose. Differences between the values as measured by using the TDR technique and those measured by using a step profilometer appear to be less than 3%, which is smaller than the previous value of 5% as measured by using a 8. 6 GHz single-resonance mode futile resonator [Lee et al. J. Korean Phys. Soc. 54（2009）1619]. Merits of using the TDR method are discussed.

关键词： THICKNESS measurement SUPERCONDUCTORS THIN films RUTILE DIELECTRIC resonators PROFILOMETER ELECTRIC resistance SURFACES (Technology)

Optimal Checkpoint Placement on Real-Time Tasks with Harmonic Periods

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Journal of Computer Science & Technology 2012年第1期27卷 105-112页

作者： Seong woo Kwak jung-Min Yang Department of Electronic Engineering Keimyung University Department of Electrical Engineering Catholic University of Daegu

This paper presents an optimal checkpoint strategy for fault-tolerance in real-time systems where transient faults occur in Poisson distribution. In our environment, multiple real-time tasks with different deadlines and harmonic periods are scheduled in the system by rate-monotonic algorithm, and checkpoints are inserted at a constant interval in each task. When a fault is detected, the system carries out rollback to the latest checkpoint and re-executes tasks. The maximum number of re-executable checkpoints and an equation to check schedulability are derived, and the optimal number of checkpoints is selected to maximize the probability of completing all the tasks within their deadlines.

关键词： checkpoint scheme real-time system fault-tolerance harmonic period rate-monotonic (RM) scheduling

Review on the characteristics of liver-pacifying medicinal in relation to the treatment of stroke: from scientific evidence to traditional medical theory

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Journal of Traditional Chinese Medicine 2018年第1期38卷 139-150页

作者： Kyungjin Lee Hyejin Joo Meixiang Sun Minwoo Kim Bumjung Kim Beom-Joon Lee jae-Heung Cho jae-Young jung jae-woo Park Youngmin Bu Department of Herbal Pharmacology College of Korean Medicine Kyung Hee University Department of Science in Korean medicine Graduate School Kyung Hee University Division of Allergy Immune and Respiratory System Department of Internal Medicine College of Korean Medicine Kyung Hee University Department of Korean Rehabilitation Medicine College of Korean Medicine Kyung Hee University Department of Internal Medicine College of Korean Medicine Kyung Hee University

OBJECTIVE： To analyze the characteristics of liver pacifying medicinal in the treatment of brain disease to provide scientific evidence in clinical usage on ***： MEDLINE/PubMed, Google Scholar, and China National Knowledge Infrastructure Database were used as the literature sources. The Scientific name, Latin pharmaceutical name, Chinese name of 7 kinds of liver pacifying medicinal including Gouteng （Ramulus Uncariae Rhynchophyllae cure Uncis）, Tianma （Rhizoma Gastrodiae）, Juemingzi （Semen Cassiae Obtusifoliae）, Quanxie （Scorpio）, Wugong （Scolopendra）, Jiangcan （Bombyx Batryticatus）, and Dilong （Pheretima Aspergillum） were used as the keywords to search the databases for relevant publications up to July 2016. Their major compounds were also used as the keywords. The papers were selected based on the pharmacological activities and mechanisms of action related to brain diseases and subsequently, were analyzed and reviewed. We first described the origin, efficacy, and clinical indications of selected medicines, then brain disease specific activities focusing on stroke after the description of the general pharmacological activities. RESULTS： On the basis of the literature of scientific studies and clinical use in traditional medicine, we found and discussed the characteristics of liver pacifying medicinal in stroke treatment. First, liver-pacifying medicinal, or their components, might pass through the blood-brain barrier and act directly on neurons or on the neural network to provide protective effects against brain disease. Second, although it could be used throughout the disease duration, treatment of stroke might be more effective from the subacute up to the convalescent phase than the acute ***： We can suggest that live pacifying medicinal has beneficial pharmacological activities directly or indirectly on neurons in brain disease and is useful for the treatment of stroke from subacute to convalescent phase.

关键词： Stroke Traditional medicine Calming liver wind Review

Prediction of Nitrogen Diffusivity in α-ferrite Based on Thermodynamics

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Journal of Iron and Steel Research International 2015年第8期22卷 743-745页

作者： jae-gil jung Seok-jae LEE Light Metal Division Korea Institute of Materials Science Division of Advanced Materials Engineering Research Center for Advanced Materials Development Chonbuk National University

A thermodynamic based equation to predict the diffusivity of nitrogen in α-ferrite was investigated in consideration of the equilibrium nitrogen concentration. The temperature-dependent jump distance calculated from the lattice parameter of ferrite was used to derive the frequency factor as a function of temperature. The calculation accuracy for nitrogen diffusivity using the proposed thermodynamic based equation was improved by comparing the calculation results using previous empirical equations based on Arrhenius type relationship with measured diffusivity of nitrogen for α-ferrite at different temperatures.

关键词： nitrogen diffusivity ct-ferrite thermodynamics prediction

Intra and extra pelvic multidisciplinary surgical approach of retroperitoneal sarcoma:Case series report

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World Journal of Clinical Cases 2022年第27期10卷 9693-9702页

作者： Heekyoung Song jung Hwan Ahn Yuyeon jung jae Yeon woo Jimin Cha Yang-Guk Chung Keun Ho Lee Department of Obstetrics and Gynecology Incheon St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea Department of Obstetrics and Gynecology Seoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea Department of Orthopaedic Surgery Seoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea

BACKGROUND Retroperitoneal sarcoma(RPS) is a rare malignancy arising from mesenchymal cells that most commonly presents as an abdominal mass and is associated with poor *** several studies have assessed the survival benefits of wide excision,few have reported detailed methods for achieving wide excision in patients with *** To describe our experience with multidisciplinary surgical resection of RPS using intra-and extra-pelvic *** Multidisciplinary surgery is an anatomical approach that combines intra-and extra-peritoneal access within the same surgery to achieve complete RPS *** retrospective review of the records of patients who underwent multidisciplinary surgery for RPS analyzed surgical and survival *** Eight patients underwent 10 intra-and extra-pelvic surgical resections,and their median mass size was 12.75 cm(range,6-45.5 cm).Using an intrapelvic approach,laparoscopy-assisted surgery was performed in four cases and laparotomy surgery in *** an extrapelvic approach,ilioinguinal and posterior approaches were used in four cases each,and the prone position and midline skin incision were shared in *** patients’ RPS masses were removed completely,and four achieved R0 resection through intra-and extra-pelvic *** median estimated blood loss was 2000 m L(range,300-20000 m L) and the median hospitalization was 12.6 d(range,9-69 d).Reoperation was needed in two patients(one for wound necrosis and the other for bowel perforation and wound necrosis).The median overall survival rate and median progression-free survival were 64.6 and 13.7 mo,*** RPS is therapeutically challenging because of its location and high risk of ***,intra-and extra-pelvic surgical approaches can improve the macroscopic security of the surgical margin.

关键词： Margins of excision Retroperitoneal neoplasms Sarcoma

High efficiency and stable solid-state fiber dye-sensitized solar cells obtained using TiO_(2) photoanodes enhanced with metal organic frameworks

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Journal of Energy Chemistry 2022年第4期31卷 458-466页

作者： jae Ho Kim Hyun woo Park Sung-Jun Koo Daseul Lee Eunyeong Cho Yong-Ki Kim Myunghun Shin Jin woo Choi Hee jung Lee Myungkwan Song Department of Energy and Electronic Material Korea Institute of Materials Science(KIMS)797 Changwon-daeroSungsan-guChangwonGyeongsangnam-do 51508Republic of Korea Composites Research Division Korea Institute of Materials Science(KIMS)797 Changwon-daeroSungsan-GuChangwonGyeongsangnam-do 51508Republic of Korea School of Electronics and Information Engineering Korea Aerospace UniversityGoyang-cityGyeonggi-do 10540Republic of Korea

Solid-state fiber dye-sensitized solar cells(SS-FDSSCs) have been the subject of intensive attention and development in recent years. Although this field is only in its infancy, metal–organic frameworks(MOFs) are one such material that has been utilized to further improve the power conversion efficiency of solar cells. In this study, MOF-integrated DSSCs were shown to have potential in the development of solar cell devices with efficiency comparable to or better than that of conventional solar cells. The power conversion efficiency(PCE) of SS-FDSSCs was improved by embedding MOF-801 into a mesoporous-TiO_(2)(mp-TiO_(2)) layer, which was used as a photoanode in SS-FDSSCs, which are inherently flexible. The PCE of the MOF-integrated SS-FDSSCs was 6.50%, which is comparable to that of the reference devices(4.19%).The MOF-801 enhanced SS-FDSSCs decreased the series resistance(R_(s)) value, resulting in effective electron extraction with improved short-circuit current density(J_(SC)), while also increasing the shunt resistance(R_(sh)) value to prevent the recombination of photo-induced electrons. The result is an improved fill factor and, consequently, a higher value for the PCE.

关键词： Photoanode Metal organic frameworks Solid-state electrolyte Dye-sensitized solar cells Fiber-shaped solar cells