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Facile synthesis of graphitic carbon-nitride supported antimony-doped tin oxide nanocomposite and its application for the adsorption of volatile organic compounds

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Journal of Environmental Sciences 2019年第5期31卷 35-42页

作者： Devi Prashad Ojha Jun Hee song Han joo Kim Department of Convergence Technology Engineering Chonbuk National University Eco-friendly Machine Parts Design Center Chonbuk National University

Antimony-doped tin oxide(ATO) nanoparticles with an average size of ～ 6 nm were prepared by co-precipitation and subsequent heat treatment. Graphitic carbon nitride(g-CN)/ATO hybrid nanocomposite was designed by the combination of thermally synthesized g-CN and ATO nanoparticles by ultrasonication. The materials were characterized using N2 adsorption/desorption(BET), X-ray diffraction(XRD), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS), transmission electron microscopy(TEM) and Fourier transform infrared spectroscopy(FTIR). A mixture of five volatile organic compounds(VOCs, chloroform, benzene, toluene, xylene and styrene) was used to compare the adsorption capacity of the samples. The adsorption capacity of ATO nanoparticles was improved by the addition of g-CN. Experimental data showed that, among the five VOCs,chloroform was the least adsorbed, regardless of the samples. The g-CN/ATO showed nearly three times greater adsorption capacity for the VOC mixture than pure ATO. The unchanged efficiency of VOC adsorption during cyclic use demonstrated the completely reversible adsorption and desorption behavior of the nanocomposite at room conditions. This economically and environmentally friendly material can be a practical solution for outdoor and indoor VOC removal.

关键词： Antimony-doped tin oxide(ATO) Graphitic carbon nitride(g-CN) Volatile organic compounds(VOC) Adsorption

Septic thrombophlebitis of the porto-mesenteric veins as a complication of acute appendicitis

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World Journal of Gastroenterology 2008年第28期14卷 4580-4582页

作者： yeon Soo Chang Sun Young Min Sun Hyung joo Suk- Hwan Lee Department of Surgery Kyung Hee University College of MedicineSeoul 134-727South Korea

Pylephlebitis, a rare complication of acute appendicitis, is defined as thrombophlebitis of the portal venous system. Pylephlebitis usually occurs due to secondary infection in the region drained into the portal system. We report a case of pylephlebitis caused by acute appendicitis. The patient was transferred from a private clinic 1 wk after appendectomy with the chief complaints of high fever and abdominal pain. He was diagnosed with pylephlebitis of the portal vein and superior mesenteric vein by CT-scan. The patient was treated with antibiotics and anticoagulation therapy, and discharged on the 25th day and follow-up CT scan showed a cavernous transformation of portal thrombosis.

关键词： Acute appendicitis Pylephlebitis Antibiotics Anti-coagulation therapy

Comparative studies on the binding site of anesthetics to GABA a receptors using in silico docking methods

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BIOCELL 2023年第7期47卷 1661-1673页

作者： SEUNGHYUN AHN JUNG-yeon LEE JIHA SUNG HYUN joo KIM SEyeon PARK Department of Applied Chemistry Dongduk Women’s UniversitySeoul02748Korea Division of Applied Chemistry and Cosmetic Science Dongduk Women’s UniversitySeoul02748Korea Department of Anesthesiology and Pain Medicine Anesthesia and Pain Research InstituteYonsei University College of MedicineSeoul03722Korea

Although the GABAA receptor(GABAAR)has been proposed as the main action site for sevoflurane,isoflurane,halothane,enflurane,propofol,and benzodiazepines(BZDs),binding of these anesthetics with high-resolution structures of the GABAAR have been rarely examined by comparative docking ***,various combinations of ligands on more GABAARs with various subtypes need to be analyzed to understand the elaborate action mechanism of GABAARs better because some GABAA ligands showed specificity toward the distinct subtypes of the ***:We performed in silico docking analysis to compare the binding modes of sevoflurane,isoflurane,halothane,enflurane,propofol,and BZDs to the GABAAR based on one of the most recently provided 3D *** performed the docking analysis and the affinity-based ranking of the binding ***:Our docking studies revealed that isoflurane,halothane,and enflurane docked in an extracellular domain(ECD)on GABAARs,in contrast to ***:Our results supported a multi-site mechanism for the allosteric modulation of *** was bound to the pore or favored various subsites in the transmembrane domain(TMD).Our result confirmed that different chemically related BZD ligands interact via distinct binding modes rather than by using a common binding mode,as previously suggested.

关键词： GABAAR In silico docking Multi-binding site Anesthetics

Recurrent abducens nerve palsy with optic perineuritis

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International Journal of Ophthalmology(English edition) 2012年第2期5卷 249-250页

作者： joo yeon Kim Seung-Hee Baek Ungsoo Samuel Kim Department of Ophthalmology Kim's Eye Hospital Konyang University College of Medicine Seoul Korea

Dear Sir, I am joo yeon Kim, from the department of Ophthalmology of Kim’s Eye Hospital in Seoul, Korea. I write to present a case report of recurrent abducens nerve palsy with optic perineuritis Abducens nerve palsy is associated with trauma, viral infection or inoculation, central nervous system tumors, elevated intracranial pressure and idiopathic cause [1]. Optic perineuritis is an uncommon noninfectious inflammation of the optic nerve sheath and perineural fat. Optic perineuritis

关键词： Recurrent abducens nerve palsy with optic perineuritis Figure

Pseudomembranous conjunctivitis in a patient with DRESS syndrome

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International Journal of Ophthalmology(English edition) 2023年第2期16卷 309-311页

作者： Young joo Lee Youngsub Eom Seo yeon Park Jung Jin Shin Young Choi Jong Suk song Hyo Myung Kim Department of Ophthalmology Korea University Ansan HospitalGyeonggi-do 15535Republic of Korea Department of Ophthalmology Korea University College of MedicineSeoul 02841Republic of Korea Department of Ophthalmology Emory University School of MedicineAtlantaGA 30322USA BGN Jamsil Lotte Tower Eye Clinic Seoul 05551Republic of Korea Department of Dermatology Korea University Ansan HospitalGyeonggi-do 15355Republic of Korea Shin’s Eye Clinic Chungcheongnam-do 31513Republic of Korea

Dear Editor,Drug rash with eosinophilia and systemic symptoms(DRESS)syndrome is a drug reaction featuring high fever,eosinophilia,skin rashes,and multi-organ involvement that may be *** manifestations,including cicatrizing conjunctivitis,corneal infiltration,and anterior uveitis,are rarely reported[1-6]but may cause serious complications if ***,it is important to diagnose DRESS syndrome in patients with ocular features promptly with appropriate *** article reports a case diagnosed with DRESS syndrome associated with pseudomembranous conjunctivitis secondary to carfilzomib.

关键词： membranous conjunctivitis involvement

Collusion-resistant convertible ring signature schemes

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Science China(Information Sciences) 2015年第1期58卷 134-149页

作者： HWANG Jung yeon CHANG Ku-Young CHO Hyun Sook song Boyeon SUSILO Willy Electronics and Telecommunications Research Institute(ETRI) DaejeonKorea Korea Institute of Science and Technology Information (KISTI) DaejeonKorea Centre for Computer and Information Security Research School of Computer Science and Software EngineeringUniversity of WollongongAustralia

A ring signature scheme provides signer ambiguity by hiding a signer in a ring of arbitrary members appropriately. A convertible ring signature scheme is an extension of a ring signature scheme that authenticates a signer and proves that a real signer and no one else generated a ring signature. In this paper, we first show that the recent convertible ring signature scheme proposed by Jeong et al. is vulnerable to collusion ***, we present a formal security model for a convertible ring signature with collusion resistance. The security notion of a convertible ring signature is intrinsically different from that of an ordinary ring signature due to the conversion property. For our collusion resistance, we consider full key exposure, that is, even an adversary who knows all secret keys will not be able to break the collusion resistance. Finally, we construct a novel convertible ring signature scheme with collusion resistance and prove the security of the scheme in the presented security model. We also compare our scheme with the existing ring signature schemes in the literature to show its advantages.

关键词： authentication ring signature anonymity convertibility collusion-resistance

Is a split-dose regimen of 2 L polyethylene glycol plus ascorbic acid tolerable for colonoscopy in an early morning visit to a comprehensive medical check-up?

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World Journal of Gastroenterology 2017年第6期23卷 1030-1037页

作者： Ji yeon Seo Changhyun Lee Eun Hyo Jin Mi Hyun Yun joo Hyun Lim Hae yeon Kang Jong In Yang Su Jin Chung Sun Young Yang joo Sung Kim Department of Internal Medicine and Healthcare Research Institute Healthcare System Gangnam CenterSeoul National University Hospital Department of Nursing Healthcare System Gangnam CenterSeoul National University Hospital

To evaluate the effectiveness and tolerability of a split-dose 2 L polyethylene glycol (PEG)/ascorbic acid (AA) regimen for healthy examinees who visited for comprehensive medical check-up in the early *** February 2015 to March 2015, examinees of average risk who were scheduled for a colonoscopy in the morning were retrospectively *** 189 examinees were divided into split-dose and non-split-dose groups. The adequacy of bowel preparation for the split-dose group vs the non-split-dose group was 96.8% vs 85.2%, respectively, P < 0.001, and the compliance of the last meal restriction was 74.6% vs 58.2%, respectively, P < 0.001. The sleep disturbance (P < 0.001) was more prevalent in the split-dose group, however the willingness to repeat the same preparation method (P = 0.243) was not different in both groups. The split-dose regimen was the most important factor influencing adequate bowel preparation in multivariate analysis (HR = 10.89, 95%CI: 6.53-18.17, P < 0.001).CONCLUSIONA split-dose regimen of 2 L PEG/AA for an early morning colonoscopy was more effective and showed better compliance for diet restriction without any difference in satisfaction and discomfort. Introducing a split-dose regimen of 2 L PEG/AA to morning colonoscopy examinees is effective and tolerable in a comprehensive medical check-up setting.

关键词： Compliance Early morning colonoscopy Effectiveness Split-dose regimen Tolerability

Epstein-Barr virus-positive diffuse large B-cell lymphoma with human immunodeficiency virus mimicking complicated frontal sinusitis:A case report

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World Journal of Clinical Cases 2021年第7期9卷 1654-1660页

作者： Seokho Yoon Kyeong Hwa Ryu Hye Jin Baek Hyo Jung An yeon-Hee joo Department of Nuclear Medicine and Molecular Imaging Gyeongsang National University School of Medicine and Gyeongsang National University Changwon HospitalChangwon 51472South Korea Department of Radiology Gyeongsang National University School of Medicine and Gyeongsang National University Changwon HospitalChangwon 51472South Korea Department of Radiology Institute of Health SciencesGyeongsang National University School of MedicineJinju 52727South Korea Department of Pathology Gyeongsang National University School of Medicine and Gyeongsang National University Changwon HospitalChangwon 51472South Korea Department of Otorhinolaryngology Gyeongsang National University School of Medicine and Gyeongsang National University Changwon HospitalChangwon 51472South Korea

BACKGROUND Primary non-Hodgkin’s lymphoma of the frontal sinus is extremely *** addition,Epstein-Barr virus(EBV)has been reported to play a role in the development of human immunodeficiency virus(HIV)-related malignant *** the best of our knowledge,there is no report for the HIVassociated,EBV-positive primary diffuse large B-cell lymphoma(DLBCL)in the frontal *** SUMMARY We present a unique case of HIV-associated,EBV-positive DLBCL in the frontal sinus in a 46-year-old *** tomography of paranasal sinuses revealed dense opacification of the right frontal sinus with combined soft tissue *** on the clinical and radiological findings,the initial diagnosis was complicated frontal sinusitis,presenting Pott’s puffy ***,HIV testing was positive on preoperative laboratory test,and the frontal sinus lesion was confirmed as EBV-positive DLBCL on *** Through this article,we suggest that EBV-positive DLBCL should be considered as possible diagnosis for patients with nonspecific space-occupying lesion of the paranasal *** also highlight an importance of clinical suspicion in diagnosing HIV infection because HIV serology is not routinely tested in patients with paranasal sinus problem.

关键词： Lymphoma Paranasal sinus Human immunodeficiency virus Epstein-Barr virus Computed tomography Case report

Adaptive Model Predictive Control for Yaw System of Variable-speed Wind Turbines

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Journal of Modern Power Systems and Clean Energy 2021年第1期9卷 219-224页

作者： Dongran song Qing Chang songyue Zheng Sheng Yang Jian Yang Young Hoon joo the School of Automation Central South Universityand Hunan Provincial Key Laboratory of Power Electronics Equipment and GridChangsha 410083China the School of Energy Science and Engineering Central South UniversityChangsha 410083China the School of IT Information and Control Engineering Kunsan National UniversityKunsan 54150Korea

Due to varying characteristics of the wind condition, the performance of the wind turbines can be optimized by adapting the parameters of the control system. In this letter, an adaptive technique is proposed for the novel model predictive control(MPC) for the yaw system of the wind turbines. The control horizon is adapted to the one with the best predictive performance among multiple control horizons. The adaptive MPC is demonstrated by simulations using real wind data, and its performance is compared with the baseline MPC at fixed control horizon. Results show that the adaptive MPC provides better comprehensive performance than the baseline ones at different preview time of wind directions. Therefore, the proposed adaptive technique is potentially useful for the wind turbines in the future.

关键词： Wind turbine yaw system wind direction adaptive model predictive control