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Discriminating between explosions and earthquakes

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Applied Geophysics 2014年第4期11卷 429-436,509,510页

作者： cho Kwang-hyun Petroleum Technology Institute Korea National Oil Corporation

Earthquake, explosion, and a nuclear test data are compared with forward modeling and band-pass filtered surface wave amplitude data for exploring methodologies to improve earthquake–explosion discrimination. The proposed discrimination method is based on the solutions of a double integral transformation in the wavenumber and frequency domains. Recorded explosion data on June 26, 2001（39.212°N, 125.383°E） and October 30, 2001（38.748°N, 125.267°E）, a nuclear test on October 9, 2006（41.275°N, 129.095°E）, and two earthquakes on April 14, 2002（39.207°N, 125.686°E） and June 7, 2002（38.703°N, 125.638°E）, all in North Korea, are used to discriminate between explosions and earthquakes by seismic wave analysis and numerical modeling. The explosion signal is characterized by first P waves with higher energy than that of S waves. Rg waves are clearly dominant at 0.05–0.5 Hz in the explosion data but not in the earthquake data. This feature is attributed to the dominant P waves in the explosion and their coupling with the SH components.

关键词： explosion earthquake nuclear test P wave Rg wave numerical modeling

Suppression of DRR1 results in the accumulation of insoluble ubiquitinated proteins,which impairs drought stress tolerance

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Journal of Integrative Plant Biology 2021年第3期63卷 431-437页

作者： Seong Gwan Yu Na hyun cho Jong Hum Kim Tae Rin Oh Woo Taek Kim Department of Systems Biology and Division of Life Science Yonsei UniversitySeoul 03722Korea Institute of Life Science and Biotechnology Yonsei UniversitySeoul 03722Korea

Drought stress has detrimental effects on *** the abscisic acid(ABA)-mediated drought response is well established,defensive mechanisms to cope with dehydration-induced proteotoxicity have been rarely ***1 was identified as an Arabidopsis drought-induced gene encoding an ER-localized RING-type E3 Ub *** of DRR1 markedly reduced tolerance to drought and proteotoxic stress without altering ABA-mediated germination and stomatal *** dehydration-induced insoluble ubiquitinated protein accumulation was more obvious in DRR1 loss-of-function plants than in wild-type *** results suggest that DRR1 is involved in an ABA-independent drought stress response possibly through the mitigation of dehydration-induced proteotoxic stress.

关键词： Arabidopsis drought stress E3 ligase proteotoxicity ubiquitination

A novel device for endoscopic submucosal dissection,the Fork knife

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World Journal of Gastroenterology 2008年第43期14卷 6726-6732页

作者： hyun Gun Kim Joo Young cho Gene hyun Bok Won Young cho Wan Jung Kim Bong Min Ko Jin Oh Kim Joon Seong Lee Moon Sung Lee Chan Sup Shim Institute for Digestive Research Digestive Disease Research CenterSoonChunHyang University College of MedicineSeoul 140-743South Korea

AIM： To introduce and evaluate the efficacy and technical aspects of endoscopic submucosal dissection （ESD） using a novel device, the Fork knife. METHODS： From March 2004 to April 2008, ESD was performed on 265 gastric lesions using a Fork knife （Endo FS）（group A） and on 72 gastric lesions using a Flexknife （group B） at a single tertiary referral center. We retrospectively compared the endoscopic characteristics of the tumors, pathological findings, and sizes of the resected specimens. We also compared the en b/oc resection rate, complete resection rate, complications, and procedure time between the two groups. RESULTS： The mean size of the resected specimens was 4.27 ± 1.26 cm in group A and 4.29 ± 1.48 cm in group B. The en b/oc resection rate was 95.8% （254/265 lesions） in group A and 93.1% （67/72） in group B. Complete ESD without tumor cell invasion of the resected margin was obtained in 81.1% （215/265） of group A and in 73.6% （53/72） of group B. The perforation rate was 0.8% （2/265） in group A and 1.4% （1/72） in group B. The mean procedure time was 59.63 ± 56.12 min in group A and 76.65 ± 70.75 min in group B （P 〈 0.05）. CONCLUSION： The Fork knife （Endo FS） is useful for clinical practice and has the advantage of reducing the procedure time.

关键词： Fork knife Novel device Endoscopic submucosal dissection Flexknife Procedure

Soluble components of Hericium erinaceum induce NK cell activation via production of interleukin-12 in mice splenocytes

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Acta Pharmacologica Sinica 2007年第6期28卷 901-907页

作者： Myung-hyun YIM Jang-woo SHIN Jin-young SON Se-mi OH Seung-hyun HAN Jung-hyo cho chong-kwan cho Hwa-seung YOO Yeon-weol LEE Chang-gue SON East-West Cancer Center Dunsan Oriental Hospital of Daejeon UniversityDaejeon 302-122Korea

Aim:To investigate the immunoregulatory functions of water extracts of Hericiumerinaceum （WEHE） focusing on natural killer （NK） cell-based anticancer ***:Mouse splenocytes or purely isolated NK ceils were stimulated with1-100 mg/L WEHE for 24 h followed by co-culture with51Cr-labled Yac-1 cells for4 h,then NK cell-derived cytolytic activity was measured using a *** antibodies against mouse interleukin-12 （IL-12） were addedinto the WEHE-stimulated splenocytes,thereafter,cytotoxicity was measured toexamine the involvement of ***-PCR and ELISA analyses were performed toconfirm the induction of transcription and the translation of IL-12 and interferon-gamma （IFN-gamma） in the WEHE-treated ***:WEHE enhancedthe cytolytic activity of total splenocytes towards Yac-1 ceils in a ***,this activation was not observed when the NK cells isolatedfrom the splenocytes were treated with ***,the treatment withantibodies against IL-12 abolished the effect of WEHE on splenocyte-derivedcytolytic ***-PCR and ELISA analyses showed the induction of IL-12 andIFN-gamma in the WEHE-treated ***:WEHE indirectlyactivates the cytolytic ability of NK cells via the induction of IL-12 in totalsplenocytes,and possibly via other immuno-mediators or cellular components.

关键词： Hericium erinaceum NK cells interleukin-12

Repeated ventricular bigeminy by trigeminocardiac reflex despite atropine administration during superficial upper lip surgery: A case report

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World Journal of Clinical Cases 2022年第32期10卷 11967-11973页

作者： Su-Yeon cho Bo-hyun Jang Hye-Jin Jeon Dong-Joon Kim Department of Anesthesiology and Pain Medicine Chosun University HospitalGwangju 61453South Korea

BACKGROUND The trigeminocardiac reflex(TCR)is usually caused by an increased parasympathetic tone when pressure or traction is applied to the surrounding tissue of the trigeminal ***,the inexperienced anesthesiologists may have challenges on the management of TCR *** SUMMARY This is the case of an 18-year-old woman diagnosed with hemangioma of the upper *** the operation,about 1 h after surgery started,a constant 1:1 premature ventricular complex was detected,and blood pressure was decreased when approaching the deeper part with more strong traction for exposure of the *** the management of arrhythmias,such as lidocaine and atropine,was injected,arrhythmia induced by surgical stimulation could not be eliminated *** the traction repeated,bradycardia was also repeated,despite injecting additional ***,the anesthesiologist and the surgeon decided to perform the operation only to the extent that the vascular tissue was selectively removed only at the site without the *** With TCR,anesthesiologists should perform appropriate *** addition to proper drug administration,surgeons should be consulted to cope with stopping the surgery and setting the scope of the surgery even if the site is superficial.

关键词： Trigeminocardiac reflex Bigeminy Arrhythmia Hypotension Atropine Case report

Knot impingement after arthroscopic rotator cuff repair mimicking infection:A case report

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World Journal of Clinical Cases 2022年第15期10卷 5097-5102页

作者： Du-Han Kim Jong-Hyuk Jeon Byung-Chan choi Chul-hyun cho Department of Orthopedic Surgery Keimyung University Dongsan HospitalKeimyung University School of MedicineDaegu 42601South Korea

BACKGROUND Knot impingement as a complication after arthroscopic rotator cuff repair(ARCR)has been suggested as a cause of persistent pain with limited *** report on a case involving a patient who developed knot impingement after ARCR who complained of acute onset of pain with limited motion,which was confused with *** SUMMARY A 55-year-old female who complained of severe pain with limited motion of the right shoulder visited our emergency *** range of motion could not be evaluated due to the patient’s severe *** patient had undergone ARCR using a suture-bridge technique at a local clinic four months ago for treatment of a small supraspinatus tear of the right *** erosive change of the undersurface of the acromion was observed on plain radiographs of the right shoulder,and a moderate amount of bursal fluid and synovial thickening with enhancement was observed by magnetic resonance *** of an analysis of the aspirated fluid showed that the WBC count was 3960 with 90% *** arthroscopic view showed healing of the repaired supraspinatus tendon and loose suture threads and knots with severe subacromial bursitis were *** of inflammatory tissues of the glenohumeral joint and subacromial space was performed for the removal of all suture *** patient’s symptoms subsided immediately after the surgical *** Although the incidence of knot impingement is rare,the possibility of knot impingement after ARCR should be a consideration.

关键词： Rotator cuff Knot impingement Shoulder Infection Arthroscopy Case report

Docurity: A New Cryptographic Primitive for Collaborative Cloud Systems

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Intelligent Automation & Soft Computing 2023年第6期36卷 3725-3742页

作者： Byeori Kim Minseong choi Taek-Young Youn Jeong hyun Yi Haehyun cho Soongsil University Seoul06978Korea Dankook University Yongin16890Korea

Recently,there has been a sudden shift from using traditional office applications to the collaborative cloud-based office suite such as Microsoft Office *** cloud-based systems allow users to work together on the same docu-ment stored in a cloud server at once,by which users can effectively collaborate with each ***,there are security concerns unsolved in using cloud *** of the major concerns is the security of data stored in cloud ser-vers,which comes from the fact that data that multiple users are working together cannot be stored in encrypted form because of the dynamic characteristic of cloud *** this paper,we propose a novel mode of operation,DL-ECB,for AES by which we can modify,insert,and delete the ciphertext based on changes in ***,we can use encrypted data in collaborative cloud-based *** demonstrate that the DL-ECB mode can preserve the confidential-ity,integrity,and auditability of data used in collaborative cloud systems from adversaries,we implement and evaluate the prototype of the DL-ECB mode.

关键词： Cloud collaboration mode of operation auditability of ciphertext

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

Management of post-liver transplantation biliary stricture inaccessible by endoscopic retrograde cholangiopancreatography:A case report

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World Journal of Clinical Cases 2023年第34期11卷 8235-8241页

作者： Yohan Lee Chang Hwan Park Eunae cho Ki-hyun Kim Division of Gastroenterology and Hepatology Department of Internal MedicineChonnam National University HospitalGwangju 61469South Korea

BACKGROUND One challenging scenario in the treatment of biliary stricture is that post-liver transplantation(LT)biliary strictures cannot be accessed using endoscopic retrograde cholangiopancreatography(ERCP).Here,we report such a case that was successfully treated using a novel endoscopic *** SUMMARY A 60-year-old man presented with obstructive jaundice caused by a post-LT biliary *** underwent LT for compensated alcoholic liver cirrhosis and hepatocellular *** investigations unveiled a cholestatic pattern of abnormalities in liver function and a total bilirubin level of 16 mg/*** resonance cholangiopancreatography revealed a stricture extending from the right intrahepatic bile duct into the common hepatic *** postoperative deformities made accessing the ampulla of Vater with a sideviewing duodenoscope *** transhepatic biliary drainage(PTBD)was performed to treat biliary ***,to resolve the stricture completely,a fully covered self-expandable metal stent(FC-SEMS)with a novel proximal retrievable string was deployed into the post-LT biliary stricture through the PTBD *** inserting the stent through the PTBD tract,the stent with the distal string was manually inverted to ensure that the distal part with the string became the proximal part for later endoscopic *** 6 mo,the FC-SEMS was successfully removed without complications,as the string was pulled out using a forward-viewing *** Deployment and endoscopic removal of an FC-SEMS with a novel proximal string through the PTBD tract may be a viable option for treating post-LT biliary strictures that are inaccessible by ERCP.

关键词： Jaundice Obstructive Percutaneous transhepatic cholangioscopy Self-expandable metallic stents Case report