Ha‐Kyun Jung, Jae-Suk Oh, Sang Il Seok, Tack-Hyuck Lee,
For possible applications as optical amplification materials in telecommunications, LaPO4:Er,Yb nanoparticles were synthesized in a solution system and their properties were investigated by various spectroscopic techniques. The prepared nanoparticles are single-phased and present the monazite structure, the particle size being about 5 nm with a narrow size distribution. Also, it was confirmed by EA and FT-IR analyses that the surface of nanoparticles is coated with the solvent molecules used in ...
Tópico(s): Glass properties and applications
2005 - Elsevier BV | Journal of Luminescence
Sunggak Kim, Chang Ho Oh, Jae Suk Ko, Kyo Han Ahn, Yong Jin Kim,
... as a selective reducing agentSunggak Kim, Chang Ho Oh, Jae Suk Ko, Kyo Han Ahn, and Yong Jin KimCite ...
Tópico(s): Radical Photochemical Reactions
1985 - American Chemical Society | The Journal of Organic Chemistry
Sung Il Kang, Heung‐Kwon Oh, Jae Suk Yoo, Soyeon Ahn, Min Hyun Kim, Myung Jo Kim, Il Tae Son, Duck‐Woo Kim, Sung‐Bum Kang, Young Soo Park, Chang Jin Yoon, Rumi Shin, Seung Chul Heo, In Taek Lee, Eui Gon Youk, Min Jung Kim, Taeun Chang, Sungchan Park, Dae Kyung Sohn, Jae Hwan Oh, Ji Won Park, Seung‐Bum Ryoo, Seung‐Yong Jeong, Kyu Joo Park,
Colonic self-expanding metallic stenting (SEMS) is widely used for the treatment of malignant colonic obstruction as a bridge to elective surgery. However, the effects of colonic stenting on long-term oncologic outcomes are debatable. This study aimed to compare the long-term oncologic outcomes of preoperative SEMS insertion with those of immediate surgery in patients with obstructing left-sided colorectal cancer.A cohort of consecutive patients who underwent radical surgery for obstructing left- ...
Tópico(s): Anorectal Disease Treatments and Outcomes
2018 - Elsevier BV | Surgical Oncology
Kyu Hwan Oh, Jae Suk Jeong, Yang Mo Koo, Dong Nyung Lee,
High Mn TWIP steel is regarded as a promising material for the next generation automobile steel because of its high strength and good ductility. Most of the rolling and recrystallization texture studies of TWIP steels have been made at relatively low rolling reductions (50–60%). In this study, the rolling and recrystallization textures of 60–80% cold-rolled Fe-18% Mn-xAl-0.6% C steel with x being 0–3% have been investigated. The α fiber connecting Goss {110} and brass {110} orientations in the Euler ...
Tópico(s): Magnetic Properties and Applications
2015 - Elsevier BV | Materials Chemistry and Physics
Han Woong Lim, Joong Won Shin, Hee Yoon Cho, Ha Kyoung Kim, Se Woong Kang, Su Jeong Song, Hyeong Gon Yu, Jaeryung Oh, Jae Suk Kim, Sang Woong Moon, Ju Byung Chae, Tae Kwann Park, Yumi Song,
To identify the clinical features, treatment outcomes, and prognostic factors of endogenous endophthalmitis in multiple tertiary referral centers of South Korea over a 6-year period.The authors conducted a retrospective review of medical records of 57 eyes of 43 patients diagnosed with endogenous endophthalmitis from January 2005 to December 2011, which was referred to tertiary referral centers.Fifty-seven cases of 43 patients were followed for a mean of 18.7 months (range, 0.5-50 months). The common ...
Tópico(s): Ocular Diseases and Behçet’s Syndrome
2013 - Lippincott Williams & Wilkins | Retina
In this paper, we study deformations of coisotropic submanifolds in a symplectic manifold. First we derive the equation that governs C∞ deformations of coisotropic submanifolds and define the corresponding C∞-moduli space of coisotropic submanifolds modulo the Hamiltonian isotopies. This is a non-commutative and non-linear generalization of the well-known description of the local deformation space of Lagrangian submanifolds as the set of graphs of closed one forms in the Darboux-Weinstein chart ...
Tópico(s): Nonlinear Waves and Solitons
2005 - Springer Science+Business Media | Inventiones mathematicae
Heemoon Lee, Jihoon Kim, Sam Sae Oh, Jae Suk Yoo,
The edge-to-edge technique (Alfieri stitch) has been widely adopted in mitral valve but not tricuspid valve (TV) repair. We evaluated long-term clinical and hemodynamic outcomes of tricuspid edge-to-edge repair.We retrospectively reviewed 237 patients (mean age, 58.4 ± 13.9 years) who had undergone tricuspid edge-to-edge repair from January 2001 to March 2019 in our institution. Tricuspid annuloplasty was performed in 175 patients (73.8%) using ring (91 [38.4%]) or suture (84 [35.4%]) annuloplasty. Concomitant ...
Tópico(s): Cardiac Structural Anomalies and Repair
2020 - Elsevier BV | The Annals of Thoracic Surgery
Sang-Hee Woo, Hack-Seang Kim, Jae-Suk Yun, Myung-Koo Lee, Ki-Wan Oh, Yeon-Hee Seong, Seikwan Oh, Choon‐Gon Jang,
The effects of baclofen on the development of reverse tolerance and postsynaptic dopamine receptor supersensitivity induced by morphine were examined in mice. A single administration of morphine induced hyperactivity and the morphine-induced hyperactivity was inhibited dose dependently by the administration of a GABABreceptor agonist, baclofen (1.25, 2.5 and 5 mg kg−1, i.p.). Daily repeated administration of morphine developed reverse tolerance to the hyperactivity of morphine. The concomitant administration ...
Tópico(s): Pain Mechanisms and Treatments
2001 - Elsevier BV | Pharmacological Research
Won June Lee, Hee Yoon Cho, Dae Ho Kim, Hyeong Gon Yu, Jaeryung Oh, Jae Suk Kim, Sang Woong Moon,
The aim of study was to investigate the relationship between depression and age-related macular degeneration (AMD) in Korea treated with intravitreal ranibizumab.
Tópico(s): Retinal Imaging and Analysis
2013 - Lippincott Williams & Wilkins | Asia-Pacific Journal of Ophthalmology
Chang Hyun Oh, Jae Suk Park, Won-Seok Choi, Eunhwa Choi, Gyu Yeul Ji,
Nerve root anomalies are frequently underrecognized regardless of the advances in imaging studies; they are also underappreciated and underreported when encountered surgically. The classification of conjoined nerve roots is based on whether the nerve root emerges at an abnormal level or from an anastomotic branch. In the present report, we describe case with a conjoined nerve root that emerged at a more caudal level than that normally observed that was an undiagnosed on preoperative imaging studies. ...
Tópico(s): Neurofibromatosis and Schwannoma Cases
2013 - | Anatomy & Cell Biology
Jae Suk Park, Jeewhan Oh, Sung Jae Kim,
Recently introduced nanoscale electrokinetic phenomenon called ion concentration polarization (ICP) has been suffered from serious pH changes to the sample fluid. A number of studies have focused on the origin of pH changes and strategies for regulating it. Instead of avoiding pH changes, in this work, we tried to demonstrate new ways to utilize this inevitable pH change. First, one can obtain a well-defined pH gradient in proton-received microchannel by applying a fixed electric current through ...
Tópico(s): Microfluidic and Bio-sensing Technologies
2020 - Multidisciplinary Digital Publishing Institute | Micromachines
Jae‐Suk Choi, Sun‐Mee Park, Younghun Kim, Sang Cheol Oh, Eun Seo Lim, Yong‐Ki Hong, Mi-Ryung Kim,
This survey was performed to estimate the levels of pathogenic microorganisms, antibiotic residues, and heavy metals in seven Korean freshwater aquaculture species including Anguilla japonica, Cyprinus carpio nudus, Oncorhynchus mykiss, Pseudobagrus fulvidraco, Semisulcospira coreana, Silurus asotus, and Trionyxs sinensis. None of the ten foodborne pathogens tested in this study were found in any of the species collected from any of the aquaculture farms. Furthermore, no banned chemicals or antibiotic ...
Tópico(s): Pharmaceutical and Antibiotic Environmental Impacts
2016 - Springer Science+Business Media | Food Science and Biotechnology
Chul Ju Hwang, Dong-Young Choi, Yu Yeon Jung, Young-Jung Lee, Jae Suk Yun, Ki-Wan Oh, Sang‐Bae Han, Seikwan Oh, Mi Hee Park, Jin Tae Hong,
Tópico(s): Retinoids in leukemia and cellular processes
2016 - Elsevier BV | Hormones and Behavior
Jae Ryong Oh, Jae Suk Kim, Do Hyung Lee,
Purpose : To evaluate the change of ocular aberration after LASIK using Zernikes polynomial expansions. Methods : Sixty eyes of thirty consecutive patients that underwent LASIK were examined prospectively. The ocular aberration was measured with Hartman-Shack aberrometer (WASCA Wavefront Analyzer, USA) at postoperative 30, 90, and 180 days. The postoperative values were compared with that of preoperation. Results : The average age is 27.6 years old. The range of preoperative refractory error were from - ...
Tópico(s): Glaucoma and retinal disorders
2003 - Korean Ophthalmological Society | Journal of the Korean Ophthalmological Society
Woo Seok Choi, Jin Hyuk Choi, Jiwon Oh, In‐Soo Shin, Jae‐Suk Yang,
Background:Remote home blood pressure monitoring (RBPM) has been shown as effective in managing hypertension in underserved areas. Effects on urban patients, who are more easily provided with high-quality medical services, are still unclear. We systematically review previously published randomized controlled trials on the effect of RBPM for urban hypertensive patients.Methods:We searched electronic databases for studies published in English up to October 2018. Studies comparing the use of RBPM to ...
Tópico(s): Cardiovascular Health and Disease Prevention
2019 - Mary Ann Liebert, Inc. | Telemedicine Journal and e-Health
Sun Mi Gu, Mi Hee Park, Hyung Mun Yun, Sang‐Bae Han, Ki Wan Oh, Dong Ju Son, Jae Suk Yun, Jin Tae Hong,
Multiple sclerosis (MS) is an inflammatory disease in which myelin in the spinal cord is damaged. C-C chemokine receptor type 5 (CCR5) is implicated in immune cell migration and cytokine release in central nervous system (CNS). We investigated whether CCR5 plays a role in MS progression using a murine model, experimental autoimmune encephalomyelitis (EAE), in CCR5 deficient (CCR5-/-) mice. CCR5-/- and CCR5+/+ (wild-type) mice were immunized with myelin oligodendrocyte glycoprotein 35-55 (MOG35-55) followed ...
Tópico(s): Immunotherapy and Immune Responses
2016 - Impact Journals LLC | Oncotarget
Kyeongmi Lee, Seung-Hwan Oh, Nam‐Goo Kang, Jae‐Suk Lee, Dong‐Yu Kim, Heon Lee, Gun Young Jung,
Nanoscale metal patterns were successfully reproduced on top of a functional organic layer by a direct metal-transfer technique (DMT). A gold film deposited on the protruding features of a stamp was transferred to the organic layer by controlling its stickiness through a two-step thermal treatment. The process was also suitable for the transfer of highly adhesive metal materials to the stamp surface by using an additional gold layer. Chromium nanowires at 70 nm half-pitch were faithfully produced ...
Tópico(s): Fluid Dynamics and Thin Films
2008 - American Chemical Society | Langmuir
Hye Ok Kim, Sae Jung Na, Seung Jun Oh, Bong Jung, Sooho Lee, Jae Suk Chang, Seong‐Il Bin, Jin‐Sook Ryu,
This study evaluated the usefulness of adding single-photon emission computed tomography (SPECT)/computed tomography (CT) (SPECT/CT) to technetium Tc 99m (Tc) hexamethylpropylene amine oxime (HMPAO)-labeled leukocyte imaging for diagnosing infections in hip or knee joint prostheses.The Tc-HMPAO-labeled leukocyte scans of 164 patients (71 with hip prostheses and 93 with knee prostheses) with clinically suspected prosthetic infections were reviewed retrospectively. Planar images were taken 4 to 6 and 21 ...
Tópico(s): Total Knee Arthroplasty Outcomes
2014 - Lippincott Williams & Wilkins | Journal of Computer Assisted Tomography
Sang In Kang, Jin‐Soo Kim, Seon‐Young Park, Hye-Jeong Cho, Mi‐Soon Jang, Jae-Young Oh, Jae‐Suk Choi,
Modern consumers, especially the elderly, have a keen interest in healthy food choices. This study was conducted with the objective of developing squid paste sausages that are easily consumable by elderly individuals while also fulfilling their nutritional requirements. Response surface methodology (RSM) was employed to determine the ideal proportions for mixing raw common squid (RCS; 2.9–56.6%, A), isolated soy protein paste (ISPP; 0.3–37.8%, B), and surimi paste (SP; 25.5–64.7%, C) in order to create ...
Tópico(s): Animal Nutrition and Physiology
2023 - Multidisciplinary Digital Publishing Institute | Applied Sciences
Walaa Elsawy, Chang‐Lyoul Lee, Shinuk Cho, Seung‐Hwan Oh, Seung‐Hyeon Moon, A. A. EL‐BARBARY, Jae‐Suk Lee,
Five solution processable isoindigo-based donor-acceptor-donor (D-A-D) small molecules with different electron donating strengths have been designed and synthesized. The variation in the electron donating strength of the donor group strongly affected the optical, thermal, electrochemical and photovoltaic device performances of the isoindigo organic materials. The highest power conversion efficiency of ~3.2% was achieved in the bulk heterojunction photovoltaic device consisting of ID3T as the donor ...
Tópico(s): Conducting polymers and applications
2013 - Royal Society of Chemistry | Physical Chemistry Chemical Physics
Jae Suk Chang, Hyoung Keun Oh, Ji Wan Kim, Soo Heon Hong,
Purpose: To evaluate the results of a periacetabular osteotomy (PAO) combined with a femoral osteotomy (FO) for a dysplastic hip with a deformed femoral head. Materials and Methods: Thirteen hips with dysplasia and a deformed femoral head were followed up for more than 12 months. Eight hips were in the PAO group and 5 hips were in the PAO and FO group. The two groups were compared clinically according to the HHS (Harris hip score), pain and limping VAS (visual analogue scale), and radiologically according ...
Tópico(s): Hip and Femur Fractures
2008 - Korean Orthopaedic Association | The Journal of the Korean Orthopaedic Association
Yea‐Hyun Leem, Seikwan Oh, Hong‐Je Kang, Jung‐Hwa Kim, Juno Yoon, Jae‐Suk Chang,
ABSTRACT Bisphenol A (BPA), used in the manufacture of products based on polycarbonate plastics and epoxy resins, is well known as an endocrine‐disrupting monomer. In the current study, BPA increased cytotoxicity in hBMSCs in a dose‐ and time‐dependent manner, concomitantly with increased lipid peroxidation. Increased cell death in BPA‐treated cells was markedly blocked by pretreatment with the superoxide dismutase mimetic MnTBAP and MnTMPyP, but not by catalase, glutathione, the glutathione peroxidase ...
Tópico(s): RNA Interference and Gene Delivery
2016 - Wiley | Environmental Toxicology
Sangwon Han, Minyoung Oh, Seok-Ho Yoon, Jin-Soo Kim, Ji Wan Kim, Jae-Suk Chang, Jin‐Sook Ryu,
Avascular necrosis (AVN) of the femoral head is a major complication after internal fixation of a femoral neck fracture and determines the functional prognosis. We investigated postoperative bone single-photon emission computed tomography/computed tomography (SPECT/CT) for assessing the risk of femoral head AVN.We retrospectively reviewed 53 consecutive patients who underwent bone SPECT/CT within 2 weeks of internal fixation of a femoral neck fracture and follow-up serial hip radiographs over at least ...
Tópico(s): Pelvic and Acetabular Injuries
2016 - Springer Science+Business Media | Nuclear Medicine and Molecular Imaging
Gill Sang Han, Oh Yeong Gong, Hee Jung Kim, Nayoon Kwon, Jae Suk Huh, Jangwon Seo, Hyun Suk Jung,
The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has been renewed annually, now recorded to 25.7%, which is the highest efficiency for thin‐film solar cells, raising expectations for commercialization. However, the PSCs have a massive technical lack in entering the photovoltaic industry because of the low PCE of perovskite solar modules (PSMs), poor stability, high levelized cost of energy (LCOE), and environmental issues. Herein, cutting‐edge studies for overcoming the challenges ...
Tópico(s): Chalcogenide Semiconductor Thin Films
2022 - Wiley | Advanced Materials Technologies
Keun‐Hwan Oh, Wan-Keun Kim, Min‐Ju Choo, Jae‐Suk Lee, Jung-Ki Park, Hee‐Tak Kim,
Hydrocarbon ionomers have not been successfully employed in the cathode of polymer electrolyte fuel cell (PEFC)s due to their low oxygen permeabilities. In this work, we propose a partially fluorinated aromatic polyether with sulfonic acid groups (s-PFPE) as an ionomer for the cathode catalyst layer. Compared to sulfonated poly(ether ether ketone) (s-PEEK), it exhibited more than 1.5 times higher oxygen permeability at RH 40% and 1.3 times higher at RH 100%. The catalyst layer based on s-PFPE showed ...
Tópico(s): Advancements in Solid Oxide Fuel Cells
2014 - Elsevier BV | Electrochimica Acta
Dong Hyun Kim, Chi Hyuk Oh, Yoo-Chul Hwang, In‐Kyung Jeong, Kyu Jeong Ahn, Ho-Yeon Chung, Jae-Suk Chang,
Objectives: Bishphenol A (BPA) is a representative endocrine disruptor and is also known as a xenoestrogen.The objective of the present study is to investigate how many patients are exposed to BPA and to analyze the relationships between serum BPA concentration, bone mineral density (BMD) and biochemical bone markers in postmenopausal women with osteoporosis.Methods: Total 51 patients were enrolled for measuring BPA and clinical variables including BMD and bone markers.The relationship between BPA ...
Tópico(s): Toxic Organic Pollutants Impact
2012 - The Korean Society for Bone and Mineral Research | Journal of Bone Metabolism
Chang-Kyung Oh, M.J. Kim, Myung-Cheol Oh, Tai-Suk Yang, Jae-Suk Hyun, Soo‐Hyun Kim,
본 연구는 늙은호박, 단호박 및 애호박을 다양한 탄수화물 분해효소로 소화하여 조제한 효소가수분해물의 총 폴리페놀 함량과 항산화 활성을 측정하였다. 조회분, 조단백질 및 조섬유는 애호박이 높았으며, 탄수화물은 단호박이 높았고, 조지방은 서로 비슷하였다. 애호박 분말의 모든 효소처리군의 총 폴리페놀 함량은 늙은호박과 단호박의 가수분해물에 비하여 좀 더 높았다. 애호박 분말의 AMG와 Termamyl 소화로 조제된 효소가수분해물의 DPPH 유리기 소거활성 또한 늙은호박 및 단호박에 비하여 매우 높게 나타났다. 한편, Visozyme 처리 가수분해물을 제외한 늙은호박과 단호박의 대부분 가수분해물은 애호박보다 더 높은 superoxide anion 소거활성을 나타내었다. 애호박 가수분해물(Ultraflo 예외)의 hydrogen peroxide 소거활성은 다른 호박의 효소 분해물보다 약간 높았으나, hydroxyl radical 소거활성은 모든 호박 품종에서 14% 미만으로 낮았다. Nitric ...
Tópico(s): Phytochemical compounds biological activities
2010 - Korean Society of Food Science and Nutrition | Journal of the Korean Society of Food Science and Nutrition
Santosh Kumar, Jospeh Jang, Hyemin Oh, Byung Ju Jung, Yanghwa Lee, Hyung‐Ho Park, Kwang Hun Yang, Yu Seong, Jae‐Suk Lee,
A high-molecular-weight poly(styrene-co-2-(dimethylamino)ethyl methacrylate-co-acrylonitrile) (ABC)-type terpolymer with a high tensile strength (7.36 MPa) was synthesized using free radical polymerization. Sulfobetaine zwitterionic groups, N,N-dimethyl-N-methacryloxyethyl-N-(3-sulfopropyl), were introduced into the ABC terpolymer, and electrospun nanofibers were fabricated for the removal of particulate matter particles in air streams. The nanofibers exhibit a high filtering efficiency (>99.9%) with ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2020 - American Chemical Society | ACS Applied Nano Materials
Hyun Sik Yoon, Min Hyuk Kim, Jae Suk Park, Min Soo Choo, Seong Jin Jeong, Seung‐June Oh,
We aimed to identify risk factors for transurethral coagulation (TUC) using bipolar electrocautery for hemostasis during holmium laser enucleation of the prostate (HoLEP) surgery for benign prostatic hyperplasia (BPH).We analyzed the clinical outcomes of HoLEP surgery performed by a single surgeon between January 2010 and April 2020 at the Seoul National University Hospital. Patient characteristics and perioperative parameters were used to identify the risk factors for TUC. The TUC group was defined ...
Tópico(s): Prostate Cancer Diagnosis and Treatment
2022 - Korean Continence Society | International Neurourology Journal
Jae Suk Oh, Sang Il Seok, Ha Kyun Jung,
Tópico(s): Radiation Detection and Scintillator Technologies
2007 - Scientific.net | Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena