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Gender differences in adult traumatic brain injury according to the Glasgow coma scale:A multicenter descriptive study

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Chinese Journal of Traumatology 2021年第6期24卷 333-343页

作者： Ki Seong Eom Jang Hun Kim Sang Hoon Yoon Seong-jong Lee Kyung-Jae Park Sung-Kon Ha Jin-gyu Choi Kwang-Wook Jo JongYeon Kim suk hyung kang Jong-Hyun Kim Department of Neurosurgery Institute of Wonkwang Medical ScienceWonkwang University School of MedicineIksanSouth Korea Department of Neurosurgery Armed Forces Capital HospitalSeongnamSouth Korea Department of Neurosurgery Armed Force HospitalYangjuSouth Korea Department of Neurosurgery Korea University Anam HospitalSeoulSouth Korea Department of Neurosurgery Korea University Ansan HospitalAnsanSouth Korea Department of Neurosurgery Yeouido St.Mary's HospitalCatholic UniversitySeoulSouth Korea Department of Neurosurgery Catholic University St.Mary's HospitalBucheonSouth Korea Department of Neurosurgery Wonju Severance Christian HospitalWonjuSouth Korea Department of Neurosurgery Hallym University Sacred Heart HospitalChuncheonSouth Korea Department of Neurosurgery Korea University Guro HospitalSeoulSouth Korea

Purpose:Patients’gender,which can be one of the most important determinants of traumatic brain injury(TBI)outcomes,is also likely to interact with many other outcome variables of *** multicenter descriptive study investigated gender differences in epidemiological,clinical,treatment,mortality,and variable characteristics in adult TBI ***:The selection criteria were defined as patients who had been diagnosed with TBI and were admitted to the hospital between January 1,2016 and December 31,2018.A total of 4468 adult TBI patients were enrolled at eight University *** on the list of enrolled patients,the medical records of the patients were reviewed and they were registered online at each *** registered patients were classified into three groups according to the Glasgow coma scale(GCS)score:mild(13-15),moderate(9-12),and severe(3-8),and the differences between men and women in each group were *** risk factors of moderated and severe TBI compared to mild TBI were also ***:The study included 3075 men and 1393 women and the proportion of total males was 68.8%.Among all the TBI patients,there were significant differences between men and women in age,past history,and GCS *** the mild and severe TBI groups showed significant differences in age,past history,and clinical symptoms,the moderate TBI group showed significant differences in age,past history,cause of justice,and ***:To the best of our knowledge,this multicenter study is the first to focus on gender differences of adult patients with TBI in *** study shows significant differences between men and women in many aspects of adult ***,gender differences should be strongly considered in TBI studies.

关键词： Traumatic brain injuries Gender Epidemiology Glasgow coma scale

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Microstructure comparison of ZK60 alloy under casting,twin roll casting and hot compression

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Transactions of Nonferrous Metals Society of China 2010年第5期20卷 763-768页

作者：王守仁王敏 kang suk-bong CHO Jae-hyung School of Mechanical Engineering University of Ji'nan School of Materials Science and Engineering Shandong University Korea Institute of Materials Science 66 Sangnam-dongChangwon 641010Korea

The microstructures of ZK60 alloy under conventional direct as-casting (DC),twin roll casting (TRC) and twin roll casting followed by hot compression (TRC-HC) were analyzed by optical morphology (OM),electron backscatter diffraction (EBSD) and X-ray diffraction (XRD).The deformation condition of hot compression is 350 ℃,0.1 s?*** microstructural evolution under TRC-HC deformation followed by annealing at different temperatures and time was *** results show that TRC provides more modified microstructure compared with *** are found in TRC processing;dynamic recrystallization (DRX),shear bands and twins are found in TRC-HC.A short annealing time has little effect on hardness,while during a long time annealing,it is found that low annealing temperatures increase the micro-hardness and high temperature decreases it.

关键词： microstructural evolution anneal dynamic recrystallization static recrystallization twin-roll casting hot compression magnesium alloy ZK60

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Study on wear behavior of plasma electrolytic oxidation coatings on aluminum alloy

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Rare Metals 2006年第Z2期25卷 141-145页

作者： kang suk-Bong LEE Jung-Moo Department of Materials Engineering Korean Institute of Machinery & Materials Gyeongnam 641831 Korea

Thick and hard ceramic coatings were fabricated on A356 aluminum alloy by using plasma electrolytic oxidation(PEO) technique. The microstructure and phase composition of the PEO coatings were examined by using SEM and XRD method. It is found that the PEO coatings are mainly composed of crystalline α-Al2O3 and mullite. The dry sliding wear test of PEO coatings were carried out on a ring-on-ring wear machine. Results shows that there is hardly no wear loss of polished PEO coatings while the wear rate of uncoated aluminum alloy is 4.3×10-5 mm3·(N·m)-1 at a speed of 0.52 m·s-1 and a load of 40 N.

关键词： aluminum alloy plasma electrolytic oxidation ceramic coating wear

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HfO_2-based ferroelectric modulator of terahertz waves with graphene metamaterial

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Chinese Physics B 2016年第10期25卷 303-307页

作者：蒋然吴正冉韩祖银 hyung-suk Jung Physical School Shandong University Department of Materials Science and Engineering Seoul National University

Tunable modulations of terahertz waves in a graphene/ferroelectric-layer/silicon hybrid structure are demonstrated at low bias voltages. The modulation is due to the creation/elimination of an extra barrier in Si layer in response to the polarization in the ferroelectric Si:HfOlayer. Considering the good compatibility of HfOwith the Si-based semiconductor process, the highly tunable characteristics of the graphene metamaterial device under ferroelectric effect open up new avenues for graphene-based high performance integrated active photonic devices compatible with the silicon technology.

关键词： modulation Hafnium oxide graphene

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An Experimental Study on the Behavior of Square Concrete-Filled High Strength Steel Tube Columns

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Journal of Iron and Steel Research International 2011年第S1期18卷 878-882页

作者： hyung-suk Jung Chang-sik Choi Department of sustainable architectural engineering Hanyang UniversitySeoulKorea Department of architectural engineering Hanyang UniversitySeoulKorea

The paper presents an experimental study on the behavior of square concrete-filled high strength steel tube columns until *** specimens were tested to investigate the effect of high strength steel and plain strength concrete on the load carrying capacity of the square concrete-filled steel tube *** effect of the concrete which filled in the steel tube was also ***,the effect of high strength steel and the presence of concrete were also *** main parameters in the tests were:(1) the ultimate strength of steel (800 Mpa),(2) the presence of concrete in steel tube (hollow steel tube and concrete-filled steel tube),and (3) slender *** main objectives of these tests were three-step:(1) to describe a series of tests on composite columns,(2) to analyze the influence of several parameters,and (3) to compare the accuracy of the predictions by using the specifications in the code (AISC-LRFD,EC4 and AIJ etc.) for the design of high-strength composite *** results indicate that the ultimate strength of steel and presence of concrete had significant influence on both the axial compressive load capacity and the ductile of the square steel tube.

关键词： square concrete-filled steel tubes high strength steel axial compression

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Optimal design considering structural efficiency of compressed natural gas fuel storage vessels for automobiles

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Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 199-204页

作者： Myung-Chang kang hyung Woo LEE Chul KIM National Core Research Center for Hybrid Materials Solution Pusan National University Research Institute of Mechanical Technology Pusan National University

The shape and thickness of the dome were investigated with the aim of optimizing the type II CNG storage vessels by using a finite element analysis technique. The thickness of the liners and reinforcing materials was optimized based on the requirement of the cylinder and dome parts. In addition, the shape of the dome, which is most suitable for type lI CNG storage vessels, was proposed by a process of review and analysis of various existing shapes, and the minimum thickness was established in this sequence： metal liners, composite materials and dome parts. Therefore, the new proposed shape products give a mass reduction of 4.8 kg（5.1%）

关键词： CNG fuel storage vessel mechanical property dome part bursting structural analysis

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Ultrasonographic identification of lateral femoral cutaneous nerve anatomical variation in persistent meralgia paresthetica:A case report

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World Journal of Clinical Cases 2023年第31期11卷 7699-7705页

作者： Hyeong-Woo Park Kyung-suk Ji Jun-hyung Kim Li-Na Kim kang-Wook Ha Department of Physical Medicine and Rehabilitation Sahmyook Medical CenterSeoul 02500South Korea Department of Obstetrics and Gynecology Sahmyook Medical CenterSeoul 02500South Korea

BACKGROUND Meralgia paresthetica(MP)is an entrapment mononeuropathy of the lateral femoral cutaneous nerve(LFCN).Although structural abnormalities in nerve tissues can be confirmed using ultrasonography,this is not routinely *** SUMMARY Herein,we present the case of a 52-year-old woman who developed MP after laparoscopic gynecological *** patient was referred to our clinic from an obstetrics and gynecology clinic with symptoms of numbness and a tingling sensation in the left anterolateral thigh,which developed after surgery performed 5 mo *** were performed to assess the disease status and determine the underlying *** examination revealed an anatomical variation,where the left LFCN was entrapped within the inguinal *** case suggests that performing ultrasonographic examination before and after surgery in the lithotomy position could help prevent *** This case demonstrates the value of ultrasonography in detecting anatomical variation and diagnosing persistent *** should be considered an adjunct to electromyography for optimal MP ***,this case would help other clinicians determine patient prognosis and decide on targeted treatment strategies.

关键词： Lateral femoral cutaneous nerve Anatomical variation Meralgia paresthetica Lithotomy position Ultrasonography Case report

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Laparoscopic surgery for gastric cancer:Current status and future direction

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Chinese Journal of Cancer Research 2021年第2期33卷 133-141页

作者： So Hyun kang hyung-Ho Kim Department of Surgery Seoul National University Bundang HospitalSeongnam 13620Republic of Korea Department of Surgery Seoul National University College of MedicineSeoul 03080Republic of Korea

Gastric cancer is still a major cause of death *** laparoscopic gastrectomy(LG)has gained evidence as a standard treatment for early gastric cancer in the distal stomach,there are still concerns regarding its application for gastric cancer in the upper stomach and advanced gastric ***,LG has shown to have faster recovery,shorter hospital stay,less pain,and less blood loss in many retrospective and prospective *** application of LG has now extended from conventional radical gastrectomy to novel approaches such as function-preserving gastrectomy and sentinel-node navigated *** on the use of laparoscopy in treatment for stage IV gastric cancer are rare,but show that there may be some roles of LG in selected *** the development of new laparoscopic tools that augment human ability,the future of LG should move on from proving non-inferiority to demonstrating superiority compared to the traditional open gastrectomy.

关键词： Laparoscopy stomach neoplasm minimally invasive surgical procedures

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Thalidomide effect in endothelial cell of acute radiation proctitis

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World Journal of Gastroenterology 2008年第30期14卷 4779-4783页

作者： Ki-Tae Kim Hiun-suk Chae Jin-Soo Kim hyung-Keun Kim Young-Seok Cho Whang Choi Kyu-Yong Choi Sang-Young Rho suk-Jin kang Department of Radiology College of Medicine The Catholic University of Korea Uijeongbu St. Mary’s Hospital Department of Internal Medicine College of Medicine The Catholic University of Korea Uijeongbu St. Mary's Hospital Department of Internal Medicine College of Medicine The Catholic University of Korea Our Lady of Mercy Hospital Department of Internal Medicine College of Medicine The Catholic University of Korea Uijeongbu St. Mary’s Hospital Department of Pathology College of Medicine The Catholic University of Korea St. Vincent Hospital

AIM: To determine whether thalidomide prevents microvascular injury in acute radiation proctitis in white rats. METHODS: Fourteen female Wistar rats were used: six in the radiation group, six in the thalidomide group, and two in normal controls. The radiation and thalidomide groups were irradiated at the pelvic area using a single 30 Gy exposure. The thalidomide (150 mg/kg) was injected into the peritoneum for 7 d from the day of irradiation. All animals were sacrificed and the rectums were removed on day 8 after irradiation. The microvessels of resected specimens were immunohistochemically stained with thrombomodulin (TM), von Willebrand Factor (vWF), and vascular endothelial growth factor (VEGF). RESULTS: The microscopic scores did not differ significantly between the radiation and thalidomide groups, but both were higher than in the control group. Expression of TM was significantly lower inthe endothelial cells (EC) of the radiation group than in the control and thalidomide groups (P < 0.001). The number of capillaries expressing vWF in the EC was higher in the radiation group (15.3 ± 6.8) than in the control group (3.7 ± 1.7), and the number of capillaries expressing vWF was attenuated by thalidomide (10.8 ± 3.5, P < 0.001). The intensity of VEGF expression in capillaries was greater in the radiation group than in the control group and was also attenuated by thalidomide (P = 0.003). CONCLUSION: The mechanisms of acute radiation- induced proctitis in the rats are related to endothelial cell injury of microvessel, which may be attenuated with thalidomide.

关键词： Radiation proctitis Von Willebrand factor Thrombomodulin Vascular endothelial growth factor Thalidomide

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Addition of cerium and yttrium to ferritic steel weld metal to improve hydrogen trapping efficiency

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International Journal of Minerals,Metallurgy and Materials 2017年第4期24卷 415-422页

作者： Sung Jin Kim kang Mook Ryu Min-suk Oh Department of Advanced Materials Engineering Sunchon National University Jungang-ro Suncheon 540-742 Republic of Korea POSCO Steel Solution Marketing Division Geidong-Dong Pohang 790-704 Republic of Korea Automotive Components & Materials R&D Group Korea Institute of Industrial Technology 6 Cheomdan-gwagiro 208 beon-gil Gwangju 61012 Republic of Korea

The applicability of Ce and Y as promising candidate elements to form irreversible traps in weld metal was investigated by thermal desorption spectroscopy(TDS) with gas chromatography(GC). The precise nature of the precipitate particles newly formed in the weld metal by the addition of Ce and Y to a certain alloy system was characterized. Moreover,the hydrogen trapping efficiency expressed as the reduction of the diffusible hydrogen in the weld metal was analyzed. The results showed that the addition of Ce and/or Y to this alloy system led to the formation of a mixed type of(Ce,Ti)-based oxide,(Y,Ni)-based carbide,or(Ce,Y,Ti)-based oxide particles. Because of the high activation energy of the mixed type of particles(≥ 150 k J/mol),the trapping efficiency for hydrogen was considered to be sufficiently high to effectively reduce the diffusible hydrogen content.

关键词： hydrogen trapping weld rare earth metals cerium yttrium activation energy

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