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Improved photocatalytic activity of surface charge functionalized ZnO nanoparticles using aniline

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Journal of Materials Science & Technology 2021年第17期76卷 1-10页

作者： Chatchai Rodwihok Korakot Charoensri Duangmanee Wongratanaphisan Won Mook Choi Seung Hyun Hur Hyun jin Park jin suk Chung School of Chemical Engineering University of Ulsan680-749.South ICorea Department of Biotechnology College of Life Sciences andBiotechnologyKorea University145 Anam-roSeongbuk-guSeoul02841South Korea Research Center in Physics andAstronomy Faculty of ScienceChiang Mai UniversityChiang Mai50200Thailand

Functionalization of aniline molecules on zinc oxide(ZnO)nanoparticles is reported using a simple impregnation *** ZnO samples were systematically characterized based on morphology,surface and optical properties,and photocatalytic performance towards methyl orange(MO).Aniline functionalization increased the surface charge of the modified *** to pristine ZnO,the aniline-functionalized ZnO yielded faster photodegradation of MO,degrading 98.29%of MO in 60 min and superoxide radicals were the major species during the MO photodegradation *** results indicate that the improvement of photocatalytic degradation could be attributed to opposite charge-induced surface ***,protonated amine as a positively charged molecule was expected to increase the surface adsorption of MO(as an anionic dye)on ZnO nanoparticles surfaces,thereby increasing their photocatalytic degradation performance.

关键词： Photocatalysts Surface charge ZnO Aniline Methyl orange

TOWARDS BEAM HARDENING CORRECTION FOR POLYCHROMATIC X-RAY CT＊

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Journal of Computational Mathematics 2016年第6期34卷 671-682页

作者： Hyoung suk Park Hao Gao Sung Min Lee jin Keun Seo Department of Computational Science and Engineering Yonsei University Seoul South Korea School of Biomedical Engineering and Department of Mathematics Shanghai Jiao Tong University Shanghai China

High-attenuation object-induced streaking and shadow artifacts in computerized to- mography （CT） are somewhat connected to the misfit of the X-ray projection data to the range space of the Radon transform. This misfit is mainly due to the beam hardening factor of the projection data which is unavoidable for polychromatic sources. The major difficulty in dealing with the beam hardening-induced streaking and shadow artifacts comes from its highly nonlinear nature depending on geometries of high attenuation objects. In this work, we investigate the mathematical characteristics of those streaking and shadow artifacts from the structure of the projection data. We also proposed a metal artifacts reduction method by incorporating the recent technique of the nonlinear beam-hardening corrector. Numerical simulations show that the proposed method effectively alleviates the streaking artifacts without changing the background images.

关键词： Computed tomography Metal artifact reduction Beam hardening Radontransform.

Enhanced electrical and optical properties of single- layered MoS2 by incorporation of aluminum

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Nano Research 2018年第2期11卷 731-740页

作者： Kim, Hyung-Jun Yang, suk Kim, Hojoong Moon, jin Young Park, Kyung Park, Yun-jin Kwon, Jang-Yeon School of Integrated Technology Yonsei University Incheon Republic of Korea Yonsei Institute of Convergence Technology Incheon Republic of Korea

Electrical and optical enhancements of single-layer semiconducting materials such as transition metal dichalcogenides have recently been studied to achieve sensitive properties via external treatments, such as the formation of organic/ inorganic protecting layers on field-effect transistors （FETs）, thermal annealing, and nano-dot doping of sensors and detectors. Here, we propose a new analytical approach to electrical and optical enhancement through a passivation process using atomic layer deposition （ALD）, and demonstrate a synthesized MoS2 monolayer incorporated with A1 atoms in an A1203 passivation layer. The incorporated A1 atoms in the MoS2 monolayer are dearly observed by spherical aberration-corrected scanning transmission electron microscopy （Cs-STEM） and TEM-energy-dispersive X-ray spectroscopy results. We demonstrate that the chemically incorporated FETs exhibit highly enhanced mobilities of approximately 3.7 crn2-V-los-1, forty times greater than that of as-synthesized MoS2, with a three- fold improvement in the Dhotoluminescence properties.

关键词： MoS2 aluminum incorporation chemical vapor deposition atomic layer deposition

Hepatotoxicity Associated with a Short Course of Rosuvastatin

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Chinese Medical Journal 2015年第12期128卷 1693-1694页

作者： Na Kyoung Hwang jin Sup Park Kwang Soo Cha jin suk Kang Division of Cardiology Department of Internal Medicine and Medical Research Institute Pusan National University Hospital Busan South Korea

Statins reduce cardiovascular morbidity and mortality with *** generally well-tolerated,dose-dependent adverse events develop in 10%-15% *** addition,up to 3% patients have mildly elevated serum aminotransferase level... 详细信息

关键词： Drug Hepatotoxicity Rosuvastatin

Rationally designed bioactive milk-derived protein scaffolds enhanced new bone formation

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Bioactive Materials 2023年第2期20卷 368-380页

作者： Min suk Lee jin Jeon Sihyeon Park Juhan Lim Hee Seok Yang Department of Nanobiomedical Science&BK21 FOUR NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Medical Laser Research Center College of MedicineDankook UniversityCheonan31116Republic of Korea Center for Bio-Medical Engineering Core-Facility Dankook UniversityCheonan31116Republic of Korea

Recently,a number of studies reported that casein was composed of various multifunctional bioactive peptides such as casein phosphopeptide andβ-casochemotide-1 that bind calcium ions and induce macrophage chemotaxis,which is crucial for bone homeostasis and bone fracture repair by cytokines secreted in the *** hypothesized that the effects of the multifunctional biopeptides in casein would contribute to improving bone ***,we designed a tissue engineering platform that consisted of casein and polyvinyl alcohol,which was a physical-crosslinked scaffold(milk-derived protein;MDP),via simple freeze-thaw cycles and performed surface modification using 3,4-dihydroxy-L-phenylalanine(DOPA),a mussel adhesive protein,for immobilizing adhesive proteins and cytokines for recruiting cells in vivo(MDP-DOPA).Both the MDP and MDP-DOPA groups proved indirectly contribution of macrophages migration as RAW 264.7 cells were highly migrated toward materials by contained bioactive *** implanted MDP and MDP-DOPA in a mouse calvarial defect orthotopic model and evaluated whether MDP-DOPA showed much faster mineral deposition and higher bone density than that of the no-treatment and MDP *** MDP-DOPA group showed the accumulation of host M2 macrophages and mesenchymal stem cells(MSCs)around the scaffold,whereas MDP presented mostly M1 macrophages in the early stage.

关键词： Casein Bioactive peptides Bone regeneration Protein based scaffold Physical crosslinking

Novel Architecture of OneM2M-Based Convergence Platform for Mixed Reality and IoT

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Computers, Materials & Continua 2022年第4期71卷 51-69页

作者： Seungwoon Lee Woogeun Kil Byeong-hee Roh SJ Kim jin-suk Kang Department of Computer Engineering and Department of AI Convergence Network Ajou UniversitySuwon16499Korea Howard R.Hughes College of Engineering University of NevadaLas VegasNV89154USA AST Co.Ltd. Suwon16681Korea

There have been numerous works proposed to merge augmented reality/mixed reality(AR/MR)and Internet of Things(IoT)in various ***,they have focused on their specific target applications and have limitations on interoperability or reusability when utilizing them to different domains or adding other devices to the *** paper proposes a novel architecture of a convergence platform for AR/MR and IoT systems and *** proposed architecture adopts the oneM2M IoT standard as the basic framework that converges AR/MR and IoT systems and enables the development of application services used in general-purpose environments without being subordinate to specific systems,domains,and device *** implement the proposed architecture utilizing the open-source oneM2M-based IoT server and device platforms released by the open alliance for IoT standards(OCEAN)and Microsoft HoloLens as an MR device *** also suggest and demonstrate the practical use cases and discuss the advantages of the proposed architecture.

关键词： Internet of things(IoT) augmented realty(AR) mixed reality(MR) microsoft HoloLens oneM2M convergence platform

Clinical characteristics of sibling patients with comitant strabismus

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International Journal of Ophthalmology(English edition) 2017年第5期10卷 772-775页

作者： Haeng jin Lee Seong-Joon Kim Young suk Yu Department of Ophthalmology Seoul National University College of Medicine Seoul 110-744 Korea Seoul Artificial Eye Center Seoul National University Hospital Clinical Research Institute Seoul 110-744 Korea

AIM：To investigate the clinical characteristics of sibling patients with comitant strabismus. METHODS：Sibling patients who were diagnosed with comitant strabismus from January 2005 to December 2014 were retrospectively reviewed. Factors including age, sex, types of strabismus, refractive errors, angle of deviation, and coexistence of other strabismus were analyzed. RESULTS：A total of 62 patients（31 pairs of siblings） were included. Of these, 26 pairs had intermittent exotropia, 3 had accommodative esotropia, and 2 had infantile esotropia. There were no pairs with different subtypes of strabismus. The age at first visit was 3.7±2.6y and the mean follow-up period was 30.5±24.1mo. In siblings with intermittent exotropia, there was no difference in age of onset, age at operation, or refractive errors between the first and second-born children. The 20（77%） pairs of siblings with exotropia showed more than 80% concordance of maximum angle of deviation during follow-up. In the 9 pairs in which both siblings had an operation, the final angle of deviation after the operation was 8.2±8.1 prism diopters（PD） in first-born children and 8.6±6.5 PD in second-born children. CONCLUSION：The subtypes of strabismus are the same in all pairs of siblings and clinical characteristics of strabismus are similar between the first and secondborn children. This similarity could be an indicator for the diagnosis of second-born children. Further prospective study including a larger number of sibling patients is needed.

关键词： siblings clinical characteristics strabismus

Image-guided conservative management of right colonic diverticulitis

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World Journal of Gastroenterology 2009年第46期15卷 5838-5842页

作者： Sun jin Park Sung II Choi suk Hwan Lee Kil Yeon Lee Department of Surgery Kyung Hee University School of Medicine

AIM： To study the clinical outcomes of medical therapy in patients with right colonic diverticulitis. METHODS： The records of 189 patients with right colonic diverticulitis which was finally diagnosed by computed tomography, ultrasonography, or operative findings were retrospectively reviewed. RESULTS： Of the 189 patients hospitalized for right colonic diverticulitis, the stages of diverticulitis by a modified Hinchey classification were 26 patients （13.8%） in stage 0, 139 patients （73.5%） in stage I a, 23 patients （12.2%） in stage I b, and 1 patient （0.5%） in stage Ⅲ. Medical therapy was undertaken in 185 of 189 patients （97.9%）. One hundred and eighty three of 185 patients were successfully treated with bowel rest and antibiotics. Two patients in stage I b required a resection or surgical drainage because of an inadequate response to conservative treatment. Recurrent diverticulitis developed in 15 of 183 patients （8.2%） who responded to medical therapy. All 15 patients who suffered a second attack had uncomplicated diverticulitis, and were successfully treated with medical ***： Our results indicate that right colonic diverticulitis is essentially benign and image-guided conservative treatment is primarily required.

关键词： Ascending colon Cecum Medical therapy Colonic diverticulitis

Single port laparoscopic right hemicolectomy with D3 dissection for advanced colon cancer

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World Journal of Gastroenterology 2010年第2期16卷 275-278页

作者： Sung Il Choi Kil Yeon Lee Sun jin Park suk-Hwan Lee Department of Surgery School of MedicineKyung Hee University#1 Hoegi-dong Dongdaemun-guSeoul 130-702 South Korea

We report the first case of single port laparoscopic right hemicolectomy for advanced colon *** abdominal 3 cm length incision was made via the umbilicus.A small wound retractor and a surgical glove were used as a single *** soft tissue anterior to the superior mesenteric vein was completely removed and D3 lymph node dissection was *** total operative time was 180 min with minimal blood loss (<50 mL).The size of the tumor was 5 cm×3 cm and its tumor stage was ***-nine lymph nodes were harvested and none were *** believe that single port surgery for colon cancer is a feasible and safe procedure with surgical results comparable to conventional laparoscopic procedures.

关键词： Single port laparoscopic surgery Colon cancer D3 lymph node dissection