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Dipole-assisted carrier transport in bis(trifluoromethane) sulfonamide-treated O-ReS_(2) field-effect transistor

Nano Research 2021年第7期14卷 2207-2214页

作者： Jae young Park SangHyuk yoo Byeongho Park Taekyeong Kim young Tea Chun Jong Min Kim Keonwook Kang Soo Hyun Lee Seong Chan Jun Department of Mechanical Engineering Yonsei UniversitySeoul 03722Republic of Korea Center for Biomicrosystem Brain Science InstituteKorea Institute of Science and TechnologySeoul 02792Republic of Korea Sensor System Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Physics Hankuk University of Foreign StudiesYongin 17035Republic of Korea Division of Electronics and Electrical Information Engineering Korea Maritime and Ocean UniversityBusan 49112Republic of Korea Electrical Engineering Division Engineering Department University of CambridgeCambridgeCB3 OFAUK

We demonstrate the dipole-assisted carrier transport properties of bis(trifluoromethane)sulfonamide(TFSI)-treated O-ReS_(2) field-effect *** ReS_(2) was compared with defect-mediated ReS_(2) to confirm whether the presence of defects on the interface enhances the interaction between O-ReS_(2) and TFSI *** to the experiment,density functional theory(DFT)calculation was performed,and the result indicated that the charge transfer between TFSI and O-ReS_(2) is more sensitive to external electric fields than that between TFSI and pristine ReS_(2).After TFSI treatment,the drain current of O-ReS_(2) FET was significantly increased up to 1,113.4 times except in the range of−0.32–0.76 V owing to Schottky barrier modulation from dipole polarization of TFSI molecules,contrary to a significant degradation in device performance in pristine ReS_(2) ***,in the treated O-ReS_(2) device,the dipole direction was highly influenced by the voltage sweep direction,generating a significant area of hysteresis in I–V and transfer characteristics,which was further verified by the surface potential ***,the dipole state was enhanced according to the wavelength of the light source and *** results indicate that TFSI-treated ReS_(2) FET has large potential for use as next-generation memristor,memory,and photodetector.

关键词： Two-dimensional material ReS_(2) field-effect transistor TFSI superacid dipole

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Effects of acupuncture stimulation on brain activation induced by cue-elicited alcohol craving

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Neural Regeneration Research 2022年第5期17卷 1059-1064页

作者： Hyeok Gyu Kwon Seong Hun Choi joon Ho Seo Chae Ha Yang Mi young Lee Department of Physical Therapy College of Health ScienceEulji UniversityGyeonggiRepublic of Korea Department of Anatomy and Histology College of Oriental MedicineDaegu Haany UniversityGyeongsanRepublic of Korea Department of Rehabilitation Gyeongbuk Regional Rehabilitation HospitalGyeongsanRepublic of Korea Department of Physiology College of Korean MedicineDaegu Haany UniversityDaeguRepublic of Korea Department of Physical Therapy College of Biomedical ScienceDaegu Haany UniversityGyeongsanRepublic of Korea

Acupuncture has been shown to be effective on alcohol use ***,the underlying mechanism remains poorly *** investigate the effects of Shenmen(HT7)acupoint on brain activation induced by cue-elicited alcohol craving,30 right-handed healthy light to moderate alcohol drinkers were recruited from the *** were randomly assigned to undergo acupuncture either at HT7(experimental acupoint,n=15)or Jingqu(LU8,control acupoint,n=15)*** randomized controlled study was performed in Daegu Haany University and Daegu-Gyeongbuk Medical Innovation Foundation,Republic of *** and data collection were conducted from December 2018 to May *** results showed that after acupuncture at HT7 acupoint,the activation of orbitofrontal cortex and dorsolateral prefrontal cortex was greatly increased,while the activation of dorsolateral prefrontal cortex was obviously reduced,and subject's craving for alcohol was reduced when he/she seeing alcohol-related video clips involving various alcohols(beer,wine,or soju)or drinking *** at HT7 more greatly reduced subject's alcohol cravings than acupuncture at LU8 *** findings suggest that acupuncture can improve the self-control of mild to moderate social drinkers through the activation of the orbitofrontal cortex and dorsolateral prefrontal cortex,thereby reducing the craving for *** study protocol was approved by the Institutional Review Board of Daegu Haany University Korean Medicine Hospital,Republic of Korea(approval ***-D-18026-PRO-02)on November 30,2018.

关键词： acupuncture addiction alcohol brain activation craving cue functional MRI Shenmen(HT7)acupoint

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Statistics of oxidation resistance of Ni-(0-15)Co-(8-15)Cr-(0-5)Mo-(0-10)W-(3-8)Al-(0-5)Ti-(0-10)Ta-0.1C-0.01B superalloys at 1000℃ by compositional variations

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Rare Metals 2020年第8期39卷 918-927页

作者： Si-Jun Park Kyu-Hyuk Lee Seong-Moon Seo Hi-Won Jeong young-Soo yoo HeeJin Jang Multi-Material Research Center Gwangju-Jeonnam DivisionKorea Automotive Technology InstituteGwangju 62207Republic of Korea Department of Advanced Materials Engineering Chosun UniversityGwangju 61452Republic of Korea High Temperature Materials Group Korea Institute of Materials ScienceChangwon 51508Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea

The effects of alloying elements(Co,Cr,Mo,W,Al,Ti,and Ta)on the oxidation resistance of Ni-(0-15)Co-(8-15)Cr-(0-5)Mo-(0-10)W-(3-8)Al-(0-5)Ti-(0-10)Ta-0.1 C-0.01 B alloys were *** sample compositions were designed by the Box-Behnken method of design of experiments(DOE).The alloying elements show complicated effects on the mass gain due to oxidation,depending on the alloy *** reduces the mass gain *** other elements except Al do not appear to exert a strong effect on the oxidation rate on average,but their influences are shown clearly in the alloys with a low Al ***,W,and Ta reduce the oxidation rate,while Cr,Mo,and Ti promote *** is the most effective element in reducing the oxidation rate of the alloy with a low Al *** is confirmed that a continuous Al2O3 layer is essentially required for high oxidation *** oxide scale of easily oxidized alloys has various oxides such as NiCr2O4,NiAl2O4,NiO,Cr2O3,CrTaO4,and TiO2.

关键词： High temperature oxidation Alloy composition Ni-based superalloy Oxidation resistance Design of experiments

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Visual quality assessment after presbyopic laser in-situ keratomileusis

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International Journal of Ophthalmology(English edition) 2018年第3期11卷 462-469页

作者： Dong Hui Lim Eui-Sang Chung Myoung joon Kim Tae-young Chung Department of Ophthalmology Samsung Medical Center Sungkyunkwan University School of Medicine Department of Preventive Medicine Graduate School the Catholic University of Korea Department of Ophthalmology University of Ulsan College of MedicineAsan Medical Center

AIM： To assess visual quality after presbyopia correction using an aspheric ablation profile and a micro-monovision protocol. METHODS： This is a retrospective interventional study. Fifty-four eyes of 27 patients （mean age, 50.2±7.5y） who underwent presbyopia correction with an aspheric micro-monovision protocol were enrolled. The values of modulation transfer function （MTF） cutoff frequency, Strehl ratio, objective scattering index （OSI） and accommodation range were quantitatively assessed using the HD analyzer. Preoperative and postoperative contrast sensitivity （CS） at far （2.5 m） and near （40 cm） distance and higher-order aberrations （HOAs） were analyzed. Subjective visual satisfaction was evaluated by self-reported questionnaire regarding optical visual symptoms. RESULTS： One year after presbyopia correction, no significant differences were found in the MTF cutoff frequency, Strehl ratio and OSI, however, the lID analyzer accommodation range significantly differed postoperatively （P=0.004）. Postoperative CS at 12 and 18 cpd at near showed statistically significant improvement （P=0.020 and 0.008, respectively）. Visual performance by self-reported questionnaire revealed satisfactory results in terms of subjective visual quality improvement. CONCLUSION： Objective optical quality parameters show good visual outcomes. Subjective visual quality assessed by self-reported questionnaire in the presbyopia correction group show satisfactory results.

关键词： presbyopia correction laser blended vision visual quality LASIK

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The recent advances in scaffolds for integrated periodontal regeneration

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Bioactive Materials 2021年第10期6卷 3328-3342页

作者： Hyun Nyun Woo young joon Cho Solaiman Tarafder Chang H.Lee Center for Dental and Craniofacial Research Columbia University Medical Center630 W.168 St.VC12-212New YorkNY10032USA

The periodontium is an integrated,functional unit of multiple tissues surrounding and supporting the tooth,including but not limited to cementum(CM),periodontal ligament(PDL)and alveolar bone(AB).Periodontal tissues can be destructed by chronic periodontal disease,which can lead to tooth *** support of the treatment for periodontally diseased tooth,various biomaterials have been applied starting as a contact inhibition membrane in the guided tissue regeneration(GTR)that is the current gold standard in dental ***,various biomaterials have been prepared in a form of tissue engineering scaffold to facilitate the regeneration of damaged periodontal *** a physical substrate to support healing of a single type of periodontal tissue to multi-phase/bioactive scaffold system to guide an integrated regeneration of periodontium,technologies for scaffold fabrication have emerged in last *** review covers the recent advancements in development of scaffolds designed for periodontal tissue regeneration and their efficacy tested in vitro and in *** and Cons of different biomaterials and design parameters implemented for periodontal tissue regeneration are also discussed,including future perspectives.

关键词： Periodontium Periodontitis Bioactive scaffold Multi-phase scaffold Periodontal regeneration

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Metabolic signaling functions of the heme oxygenase/CO system in metabolic diseases

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Cellular & Molecular Immunology 2018年第12期15卷 1085-1087页

作者： Hyo Jeong Kim Yeonsoo Joe young-joon Surh Hun Taeg Chung Department of Biological Sciences University of UlsanUlsanSouth Korea Tumor Microenvironment Global Core Research Center Research Institute of Pharmaceutical SciencesSeoul National UniversitySeoulSouth Korea

Immunometabolism is the intersection of immunology and *** heme oxygenase(HO)-1 and carbon monoxide(CO)(HO-1/CO)system can be induced by various stresses,including infection,and its function is to relieve stresses such as oxidative and inflammatory *** we demonstrate that the HO-1/CO system is intimately involved in the beneficial modulation of metabolic pathways via the production of ATF4 through an integrative stress response.

关键词： system monoxide oxidative

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Effect of incision types for Artisan phakic intraocular lens implantation on ocular higher order aberrations

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International Journal of Ophthalmology(English edition) 2016年第12期9卷 1785-1789页

作者： young Min Park Bong joon Choi Jong Soo Lee Department of Ophthalmology Gyeongsang National University School of Medicine Gyeongsang National University Changwon Hospital 11 Samjeongja-ro Seongsan-gu Changwon-si Gyeongsangnam-do 51472 Korea Lee Eye Clinic Pusan 47524 Korea Department of Ophthalmology School of Medicine Pusan National University and Medical Research Institute Pusan National University Hospital Pusan 602-739 Korea

AIM： To evaluate the effect of incision types for Artisan phakic intraocular lens （PIOL） implantation on ocular higher-order aberrations （HOAs）.METHODS： A retrospective review was conducted of the patients who had undergone Artisan PIOL implantation for the correction of myopia and followed up for at least 6mo. Patients are classified into 2 groups considering the incision type： cornea group with patients undergone clear corneal incision; sclera group with patients undergone sclera tunnel incision. All patients with postoperative astigmatism of under 1 diopter （D） were included to minimize the effect of residual astigmatism on postoperative HOAs. Visual acuity, special equivalents, astigmatism, predictability （±1 D from target refraction）, HOAs （coma, trefoil, spherical aberration）, and corneal endothelial counts were analyzed preoperatively and 6mo ***： At the postoperative 6mo, all patients of both groups achieved uncorrected visual acuity of 16/20 or better, and significantly decreased the spherical equivalents compared with preoperative values. The predictability of refractive correction was 96% in the former, and 94% in the latter. Unlike the sclera group, preoperative astigmatism decreased significantly in cornea group at postoperative 6mo. The HOAs increased significantly at postoperative 6mo compared to the preoperative values in both groups, and the root mean square （RMS） total and trefoil wavefront aberration of cornea group were significantly higher than those of sclera ***： Although corneal incision significantly reduces preexisting astigmatism, the postoperative 6mo of total RMS and trefoil aberration change may deteriorate the visual quality after Artisan PIOL implantation.

关键词： Artisan astigmatism higher-order aberrations incision phakic intraocular lens

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Stereotactic body radiotherapy for oligo-recurrence within the nodal area from colorectal cancer

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World Journal of Gastroenterology 2014年第8期20卷 2005-2013页

作者： young Seok Seo Mi-Sook Kim Hyung-Jun yoo Won-Il Jang Department of Radiation Oncology Korea Cancer Center HospitalKorea Institute of Radiological and Medical SciencesSeoul 139-706South Korea

Recurrence of colorectal cancer(CRC)often presents as solitary metastases,oligometastases or *** resection became the preferred treatment for patients with CRC lung and hepatic ***,surgical treatment for oligo-recurrence within nodal area is not a widely accepted treatment due to due to their relative rarity and high postoperative *** body radiotherapy(SBRT)is one of the emerging radiation treatment techniques in which a high radiation dose can be delivered to the ***-dose SBRT can ablate the tumor with an efficacy similar to that achieved with surgery,especially for small ***,there have been very few studies on SBRT for oligo-recurrence within nodal area,although several studies have evaluated the role of SBRT in the treatment of liver and lung metastases from *** article reviews the current clinical status of and treatment methods for oligo-recurrence within nodal area from CRC,with particular emphasis on SBRT.

关键词： Colorectal cancer Oligo-recurrence Oligometastases Stereotactic radiotherapy Lymph node

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Occult gastric cancer with distant metastasis proven by random gastric biopsy

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World Journal of Gastroenterology 2016年第16期22卷 4270-4274页

作者： Sang Hyuk Lee Kyu-Hyoung Lim Seo-young Song Hui-young Lee Sung Chul Park Chang Don Kang Sung joon Lee Dong Wook Choi Sung Bae Park young-joon Ryu Department of Internal Medicine Kangwon National University School of Medicine Department of General Surgery Kangwon National University School of Medicine Department of Pathology Kangwon National University School of Medicine

Krukenberg tumor, a rare metastatic ovarian tumor arising from gastrointestinal adenocarcinoma mainly, tends to occur in premenopausal females. Finding the origin of a Krukenberg tumor is crucial for determining prognosis. In Eastern countries, the most common origin of Krukenberg tumor is stomach cancer, which is generally diagnosed via endoscopic biopsy to investigate an abnormal mucosal lesion. Here, we describe a case of huge adnexal mass in a 33-year-old woman who presented with abdominal distension. Two independent endoscopic examinations performed by experts in two tertiary university hospitals revealed no abnormal mucosal lesion. The patient was diagnosed with a Krukenberg tumor according to findings from random endoscopic biopsies taken from normal-looking gastric mucosa in our hospital. It is very rare to be diagnosed via a random biopsy in cases where three well-trained endoscopists had not found any mucosal lesion previously. Thus, in this case, random biopsy was helpful in finding the origin of a Krukenberg tumor.

关键词： Gastric cancer Krukenberg tumor Biopsy Endoscopy Diagnosis

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Extremely rare case of necrotizing gastritis in a patient with autoimmune hepatitis: A case report

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World Journal of Clinical Cases 2021年第14期9卷 3472-3477页

作者： Seung Ki Moon Jeong-Ju yoo Sang Gyune Kim young Seok Kim Department of Internal Medicine Soonchunhyang University Bucheon HospitalBucheon 14584South Korea Department of Gastroenterology and Hepatology Soonchunhyang University School of MedicineBucheon 14584South Korea

BACKGROUND Autoimmune hepatitis can cause liver fibrosis,liver cirrhosis,and hepatocellular *** treatment option include the use of steroids and/or immunesuppressive agents such as ***,these drugs have some side ***,close follow-up is needed during ***,we present an extremely rare case of a patient with an autoimmune hepatitis who died from necrotizing gastritis during immunosuppressive *** SUMMARY A 52-year-old female patient was diagnosed with autoimmune *** treated this patient with immunosuppressive ***-dose steroid treatment was initially *** azathioprine treatment was added while steroid was *** weeks after the start of treatment,she visited the emergency room due to generalized abdominal pain and *** computed tomography scan,the patient was diagnosed with necrotizing gastritis and the patient progressed to septic *** for sepsis was continued in the intensive care ***,the patient died at 6 h after admission to the emergency *** In patients with autoimmune infections undergoing immunosuppressant therapy,rare complications such as necrotizing gastritis may occur,thus requiring clinical attention.

关键词： Autoimmune hepatitis Azathioprine Case report

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