Han Gyu Lee, Moo Sung Kang, So Yeon Kim, Kwang Chun Cho, Young Cheol Na, Jin Mo Cho, Byung Ho Jin,
Retrospective study.Unilateral biportal endoscopic surgery (UBES) is a popular surgical method used to treat degenerative spinal diseases because of its merits, such as reduced tissue damage and outstanding visual capacity. However, dural injury is the most common complication of UBES with an incidence rate of 1.9% to 5.8%. The purpose of this study was to analyze the pattern of dural injury during UBES and to report the clinical course.We retrospectively reviewed the medical and radiographic records ...
Tópico(s): Spine and Intervertebral Disc Pathology
2020 - SAGE Publishing | Global Spine Journal
Yoon Keun Cho, Young Cheol Yoon, Hyeonyeong Im, Yeonho Son, Minsu Kim, Abhirup Saha, Cheoljun Choi, Jaewon Lee, Sumin Lee, Jae Hyun Kim, Yun Pyo Kang, Young‐Suk Jung, Hong Koo Ha, Je Kyung Seong, James G. Granneman, Sung Won Kwon, Yun‐Hee Lee,
Abstract Dysregulation of adipose tissue plasmalogen metabolism is associated with obesity-related metabolic diseases. We report that feeding mice a high-fat diet reduces adipose tissue lysoplasmalogen levels and increases transmembrane protein 86 A (TMEM86A), a putative lysoplasmalogenase. Untargeted lipidomic analysis demonstrates that adipocyte-specific TMEM86A-knockout (AKO) increases lysoplasmalogen content in adipose tissue, including plasmenyl lysophosphatidylethanolamine 18:0 (LPE P-18:0). ...
Tópico(s): Sirtuins and Resveratrol in Medicine
2022 - Nature Portfolio | Nature Communications
Sun Jo Kim, Nguyễn Hoàng Anh, Cheol Woon Jung, Nguyen Phuoc Long, Seongoh Park, Young Hyun Cho, Young Cheol Yoon, Eun Goo Lee, Mi‐Na Kim, Eui Young Son, Tae Ha Kim, Yingqian Deng, Johan Lim, Sung Won Kwon,
Quantitative evidence of the metabolic and cardiovascular effects of apples (
Tópico(s): Natural Antidiabetic Agents Studies
2022 - Frontiers Media | Frontiers in Nutrition
Hyo Choi, Joon Kook Kwon, Byoung Yong Moon, Nam Jun Kang, Kyoung Sub Park, Myeong Whan Cho, Young Cheol Kim,
지구 온난화에 따른 최근의 이상기후는 일조량의 부족을 야기하여 농업 피해의 일차적인 요인이 되고 있다. 플라스틱 하우스 재배에서 LED광은 일조량 부족을 보충하기 위해 종종 활용되고 있다. 본 연구는 LED 인공광원을 이용한 폐쇄형 생장실에서 생육 중인 성숙한 딸기 '대왕' 품종 과실의 생장 특성 및 기능성 식물화합물 형성을 조사하는데 목적이 있다. 인공광원으로는 청색 LED광(448nm), 적색 LED광(634nm 및 661nm), 그리고 청색과 적색이 3대 7로 조합된 혼합 LED광을 사용하였으며, 태양광이 없는 폐쇄형 생장상에서 주간 16시간 및 야간 8시간의 광주기와 함께 $200{\pm}1{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ 의 광도로 LED광을 처리하였다. 청색과 적색 파장이 혼합된 LED광에서 자란 딸기 과실의 생산량이 다른 LED광 처리보다 높았다. 유리당 중의 하나인 과당은 혼합 LED광에서 증가되었다. 안토시아닌 함량 역시 다른 LED광 처리에 ...
Tópico(s): Growth and nutrition in plants
2013 - Korean Society for Horticultural Science | Horticultural Science and Technology
Myeong Seok Kim, Min Ju Cho, Young Cheol Choi, Kwang‐Soon Ahn, Dong Hoon Choi, Kyungkon Kim, Jae Hong Kim,
We designed and synthesized a series of phenothiazine-based donor–acceptor type molecules which consist of different numbers of chromophores in a molecule for use as photosensitizers for dye-sensitized solar cells (DSSCs). Intriguingly, a dendritic molecule containing three chromophores not only gave a new possibility to modify the three dimensional structure, but also reduced aggregation between chromophores inducing dipole–dipole interaction. The DSSCs made of a dendritic photosensitizer system ...
Tópico(s): Photochromic and Fluorescence Chemistry
2013 - Elsevier BV | Dyes and Pigments
Beom Ryong Kang, Jeong Hoon Lee, Sug Ju Ko, Yong Hwan Lee, Jae Soon, Baik Ho Cho, Young Cheol Kim,
A bacterium C1010, isolated from the rhizospheres of cucumbers in fields in Korea, degraded the microbial quorum-sensing molecules, hexanoyl homoserine lactone (HHSL), and octadecanoyl homoserine lactone (OHSL). Morphological characteristics and 16S rRNA sequence analysis identified C1010 as Acinetobacter sp. strain C1010. This strain was able to degrade the acyl-homoserine lactones (AHLs) produced by the biocontrol bacterium, Pseudomonas chlororaphis O6, and a phytopathogenic bacterium, Burkholderia ...
Tópico(s): Bacterial Genetics and Biotechnology
2004 - Canadian Science Publishing | Canadian Journal of Microbiology
Yoon Kim, Jeong‐Yong Cho, Ju-Hee Kuk, Jae‐Hak Moon, Jeong-Il Cho, Young‐Cheol Kim, Keun‐Hyung Park,
Tópico(s): Probiotics and Fermented Foods
2004 - Springer Science+Business Media | Current Microbiology
Yonggeun Cho, Young‐Cheol Kim, Sanghyuk Lee, Yongsun Shim,
In this note we study Lp-Lq estimates for the Bochner–Riesz operators T-α, α>0 of negative order in Rn, n⩾3.
Tópico(s): Advanced Mathematical Physics Problems
2004 - Elsevier BV | Journal of Functional Analysis
M. Venkateswar Reddy, Satoru Hayashi, DuBok Choi, Hoon Cho, Young‐Cheol Chang,
Bioprocess for conversion of ethanol and short chain fatty acids (SCFAs) into medium chain fatty acids (MCFAs) is termed as microbial chain elongation. MCFAs are saturated monocarboxylic acids with applications as antimicrobials, corrosion inhibitors and are precursors for the production of biodiesel and bioplastics. In the present study, a two-stage mixed culture fermentation was employed for the production of SCFAs and MCFAs from food waste (FW). In the first stage, FW was hydrolyzed into leachate ( ...
Tópico(s): Biofuel production and bioconversion
2017 - Elsevier BV | Journal of Cleaner Production
Kyoungwon Cho, Young Cheol Kim, Je Chang Woo, Randeep Rakwal, Ganesh Kumar Agrawal, Sereyvath Yoeun, Oksoo Han,
Effects of transgenic expression of dual positional maize lipoxygenase-1 on the defense system were analyzed in rice. The activities of hydroperoxidelyase and antioxidative enzymes (superoxide dismutase, catalase, peroxidase) were increased and high levels of aldehydes including malondialdehyde were produced. The constitutive level of jasmonic was slightly increased and the constitutive salicylic acid level was decreased. Kinetic analysis of wound response indicated that the levels of jasmonic acid ...
Tópico(s): Plant Virus Research Studies
2011 - Elsevier BV | Plant Science
Yeonchoo Cho, Young Cheol Choi, Kwang S. Kim,
Graphene is a promising material for spintronics due to its outstanding spin transport property. Its maximally exposed 2pz orbitals allow tuning of electronic structure toward better functionality in device applications. Because the positions of carbon atoms are commensurate with those of Ni atoms on the substrate, we design a graphene spin-valve device based on the epitaxial graphene grown on the Ni (111) surface. We explored its transport properties with non equilibrium Green function theory combined ...
Tópico(s): Molecular Junctions and Nanostructures
2011 - American Chemical Society | The Journal of Physical Chemistry C
Hyo Song Nam, Anne J. Anderson, Kwang Yeol Yang, Baik Ho Cho, Young Cheol Kim,
Transcription from the dctA gene, which encodes an organic acid transporter in the root-colonizing bacterium Pseudomonas chlororaphis O6, is under complex regulatory control. Promoter sequence analysis revealed an RpoN binding site. The regulation of transcript accumulation by the level of ammonium ions in the growth medium confirmed RpoN regulation, even in the presence of glucose. A dctA mutant colonized tobacco roots to a lesser extent than the wild-type mutant during early seedling development. ...
Tópico(s): Plant Pathogenic Bacteria Studies
2006 - Oxford University Press | FEMS Microbiology Letters
Jong-Rae Cho, Young-Cheol Joo, Hayeong Jeong,
This paper addresses the finite element formulation and simulation of the powder forging process for cup-shaped aluminum products. This study is the preliminary analysis for the powder forging process of Al 6061 engine pistons of automobiles. The mechanical behavior of the powder is assumed to obey the isotropic compressible viscoplasticity, while the thermal behavior of powders is effectively modeled by a non-linear transient heat-transfer problem. A generalized Crank–Nicolson–Galerkin scheme is ...
Tópico(s): Aluminum Alloys Composites Properties
2001 - Elsevier BV | Journal of Materials Processing Technology
Jae-Chang Cho, Dong‐Hun Lee, Young-Cheol Cho, Jang‐Cheon Cho, Sang-Jong Kim,
Tópico(s): Forensic and Genetic Research
1996 - Springer Science+Business Media | The Journal of Microbiology
Kyung-Lae Cho, Hye-Jin Woo, In-Sook Lee, Junwon Lee, Young-Cheol Cho, Il-nam Lee, Hee-Jeong Chae,
This study sought to optimize the extraction and enzymatic treatment conditions of Panax ginseng leaves, stems, and roots for the production of fermented ginseng. The optimization enhanced the extraction of total saccharide, a nutrient and growth-activating factor for Lactobacillus bacteria. The hydrolysis of ginseng leaves, stems, and roots was tested with eight enzymes (Pentopan, Promozyme, Celluclast, Ultraflo, Pectinex, Ceremix, Viscozyme, and Tunicase). The enzymatic hydrolysis conditions were ...
Tópico(s): Plant tissue culture and regeneration
2010 - Elsevier BV | Journal of Ginseng Research
Hyo Song Nam, Matt Spencer, Anne J. Anderson, Baik Ho Cho, Young Cheol Kim,
A dctA gene encoding a protein with identity to a C4-dicarboxylic acid/H+ symporter was cloned from a beneficial root colonizer, Pseudomonas chlororaphis O6 (PcO6). Expression of the dctA gene was induced in minimal medium by several organic acids and was repressed by glucose. Highest expression was observed in early-logarithmic (log) cells grown on fumarate, acetate or succinate with decline as cells approached late-log growth phase. The dctA transcript accumulated weakly when cells were grown on ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2003 - Elsevier BV | Gene
Young-Cheol Cho, Ellen B. Ostrofsky, Roger C. Sokol, Robert C. Frohnhoefer, G‐Yull Rhee,
We investigated the effects of chlorobenzoates (3-, 2,3-, 2,4-, 2,5-, 2,3,5- and 2,4,6-chlorobenzoate), chlorophenols (2,3-, 3,4-, 2,5-, 2,3,6- and penta-chlorophenol), and chlorobenzenes (1,2-, 1,2,3-, 1,2,4- and penta-chlorobenzene) on polychlorinated biphenyl (PCB) dechlorination and on the enrichment of PCB-dechlorinating microorganisms. When the natural microbial populations eluted from St. Lawrence River sediments were enriched with each of the 15 haloaromatic compounds (HACs) in PCB-free sediments, ...
Tópico(s): Environmental remediation with nanomaterials
2002 - Oxford University Press | FEMS Microbiology Ecology
Young-Cheol Cho, Roger C. Sokol, Robert C. Frohnhoefer, G‐Yull Rhee,
Reductive dechlorination of individual PCB congeners in Aroclor 1248 was investigated using sediment microorganisms from the St. Lawrence River (NY). No dechlorination was observed at Aroclor concentrations below 40 ppm [137 nmol (g of sediment)-1]. Above this threshold, congeners could be divided into three categories: group A, congeners that dechlorinated above 40 ppm; group B, congeners that dechlorinated only at high concentrations above 60 ppm [206 nmol (g of sediment)-1]; and group C, lower chlorinated ...
Tópico(s): Toxic Organic Pollutants Impact
2003 - American Chemical Society | Environmental Science & Technology
Young-Cheol Cho, Robert C. Frohnhoefer, G‐Yull Rhee,
The potential impact of zebra mussel infestation on the dynamics of polychlorinated biphenyls (PCBs) in the Hudson River was determined by investigating the biodeposition and bioconcentration of PCBs, using algal food contaminated with 2,5,2′- and 2,4,2′,4′-chlorobiphenyls (CBPs) in the laboratory. Approximately 46–90% of the total food was ingested depending on the supply rate. The highest proportion of ingested congeners was found in biodeposits (64±11% for 2,5,2′-CBP, and 52±6% for 2,4,2′,4′-CBP), ...
Tópico(s): Toxic Organic Pollutants Impact
2003 - Elsevier BV | Water Research
Young-Cheol Cho, O.-Seob Kwon, Roger C. Sokol, Charlotte M. Bethoney, G.-Yull Rhee,
Evidence of reductive dechlorination of polychlorinated biphenyls (PCBs) in sediments was investigated in Hudson River sediments dredged and encapsulated in 1978 at Moreau, NY. The effect of different moisture contents in dredged sediments on dechlorination and dechlorinating microorganisms was also determined using PCB-spiked sediments in which the moisture level was adjusted by simulating a dewatering process. The congener pattern of PCBs indicated that the dechlorination in the dredged sediments ...
Tópico(s): Toxic Organic Pollutants Impact
2001 - Elsevier BV | Chemosphere
G.-Yull Rhee, Roger C. Sokol, Charlotte M. Bethoney, Young-Cheol Cho, Robert C. Frohnhoefer, Ted Erkkila,
The present study has investigated a correlation between the kinetics of polychlorinated biphenyl (PCB) dechlorination and the growth of dechlorinating microbial populations. Microorganisms were eluted from Aroclor 1248-contaminated St. Lawrence River (NY, USA) sediments and inoculated into clean sediments spiked with Aroclor 1248 at 10 concentrations ranging from 0 to 3.12 micromol/g sediment (0-900 ppm). The time course of PCB dechlorination and population growth were concurrently determined by congener- ...
Tópico(s): Toxic Organic Pollutants Impact
2001 - Wiley | Environmental Toxicology and Chemistry
Young-Cheol Cho, Ellen B. Ostrofsky, G.‐Yull Rhee,
Abstract The effect of a rhamnolipid biosurfactant on the reductive dechlorination of polychlorinated biphenyls was investigated with the use of clean sediments spiked with Aroclor 1248. The surfactant was added to the contaminated sediments at four different concentrations (5, 10, 25, and 50 μg/g sediment [ppm] on a sediment dry wt basis), and dechlorination was followed over a 40-week period. The rate of overall dechlorination was enhanced at the three highest concentrations. Dechlorination at the ...
Tópico(s): Petroleum Processing and Analysis
2004 - Wiley | Environmental Toxicology and Chemistry
Shiva Ram Bhandari, Suk-Keun Park, Young-Cheol Cho, Young‐Sang Lee,
respectively. Of the six detected fatty acids, the major fatty acids were oleic (46.3%) and linoleic acids (37.4%). Seed squalene content exhibited high correlationship with phytosterols, but not with tocopherols. Among the tested varieties, variety Yulmu 1 showed a relatively higher proportion of phytonutrients, suggesting its potential as a gene source for further breeding.
Tópico(s): Food Quality and Safety Studies
2012 - Academic Journals | AFRICAN JOURNAL OF BIOTECHNOLOGY
Kyoung-Hee Oh, Dong-Hwan Jeong, Young-Cheol Cho,
Tópico(s): Marine and coastal ecosystems
2013 - Springer Science+Business Media | The Journal of Microbiology
G.-Yull Rhee, Roger C. Sokol, Charlotte M. Bethoney, Young-Cheol Cho, Robert C. Frohnhoefer, Ted Erkkila,
Tópico(s): Advanced Polymer Synthesis and Characterization
2001 - Wiley | Environmental Toxicology and Chemistry
Kyoung-Hee Oh, Dong-Hwan Jeong, Seung-Hee Shin, Young-Cheol Cho,
In order to develop a protocol to quantify cyanobacteria and Microcystis simultaneously, the primers and probe were designed from the conserved regions of 16S rRNA gene sequences of cyanobacteria and Microcystis, respectively. Probe match analysis of the Ribosomal Database Project showed that the primers matched with over 97% of cyanobacterial 16S rRNA genes, indicating these can be used to amplify cyanobacteria specifically. The TaqMan probe, which is located between two primers, matched with 98. ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
2012 - Springer Science+Business Media | Journal of Microbiology and Biotechnology
Sung Pil Cho, Mi Song, Young Cheol Park, Ho Seon Choi, Kyoung-Joung Lee,
A new method for estimating and eliminating electrocardiogram (ECG) artifacts from single channel scalp electroencephalogram (EEG) is proposed. The proposed method consists of emphasis of QRS complex from EEG using least squares acceleration (LSA) filter, generation of synchronized pulse with R-peak and ECG artifacts estimation and elimination using adaptive filter. The performance of the proposed method was evaluated using simulated and real EEG recordings, we found that the ECG artifacts were successfully ...
Tópico(s): Blind Source Separation Techniques
2007 - Institute of Electrical and Electronics Engineers | Conference proceedings
DuBok Choi, Geum-Sook Lim, Yu Lan Piao, On-You Choi, Ki-An Cho, Choon-Bae Park, Young‐Cheol Chang, Young-Il Song, Myung‐Koo Lee, Hoon Cho,
Tópico(s): Edible Oils Quality and Analysis
2014 - Springer Science+Business Media | Korean Journal of Chemical Engineering
Iwhan Cho, Byung‐Gu Kim, Young‐Cheol Park, Chang‐Bae Kim, Myoung‐Seon Gong,
... 4-methylene-1,3-dioxolane Iwhan Cho, Iwhan Cho Department of chemistry, Korea Advanced Institute of Science and Technology, P.O. Box 150, ChongyangniSearch for more papers by this authorByung-Gu Kim, Byung-Gu Kim Department of Chemistry, Dankook University, Cheonan 330–714, Chungnam, KoreaSearch for more papers by this authorYoung-Cheol Park, Young-Cheol Park Department of Chemistry, Dankook University, Cheonan 330– ... more papers by this author Iwhan Cho, Iwhan Cho Department of chemistry, Korea Advanced Institute of Science and Technology, P.O. Box 150, ChongyangniSearch for more papers by this authorByung-Gu Kim, Byung-Gu Kim Department of Chemistry, Dankook University, Cheonan 330–714, Chungnam, KoreaSearch for more papers by this authorYoung-Cheol Park, Young-Cheol Park Department of Chemistry, Dankook University, Cheonan 330– ...
Tópico(s): Chemistry and Chemical Engineering
1991 - Wiley | Die Makromolekulare Chemie Rapid Communications
Bong-Suk Cho, Young Cheol Choi,
The refining process using an aluminum deoxidizer for fabricating stainless steel generated steel slag (STS‐refining slag (SRS)) that contains a large amount of Al 2 O 3 and is a compound of mainly 12CaO·7A l2 O 3 and 3CaO·A l2 O 3 . When SRS was mixed with slag cement, rapid exothermic reaction occurred in the initial phase of hydration. During the hydration of slag cement and SRS, a large quantity of x CaO‐ y Al 2 O 3 ‐ z H 2 O hydrate was observed. Until 10% weight replacement ratio of SRS to slag ...
Tópico(s): Magnesium Oxide Properties and Applications
2018 - Hindawi Publishing Corporation | Advances in Materials Science and Engineering