http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Effect of Postoxidation Annealing on High Temperature Grown SiO[sub 2]/4H-SiC Interfaces
Moon, Jeong Hyun,Yim, Jeong Hyuk,Seo, Han Seok,Lee, Do Hyun,Song, Ho Keun,Heo, Jaeyeong,Kim, Hyeong Joon,Cheong, Kuan Yew,Bahng, Wook,Kim, Nam-Kyun The Electrochemical Society 2010 Journal of the Electrochemical Society Vol.157 No.2
우식성 열구에 적용한 치면열구전색의 이차 우식에 대한 영향과 사용 실태
정문진 ( Moon Jin Jeong ),김아름 ( A Reum Kim ),김민지 ( Min Ji Kim ),정순정 ( Soon Jeong Jeong ),손정희 ( Jung Hui Son ),정성균 ( Sung Kyun Chung ),임도선 ( Do Seon Lim ) 한국치위생과학회 2014 치위생과학회지 Vol.14 No.4
This study was designed to investigate the using status and awareness of pit and fissure sealant, and how it affects on secondary caries when performed on above of initial caries. After classifying 446 occlusal surface into four groups, performed pit and fissure sealant, induced artificial caries, used DIAGNOdent (Kavo) to measure degree of secondary caries. Also, distributed a questionnaire on dental clinic in metropolitan area to find out using status and awareness of pit and fissure sealant, the following results were obtained. 1) On inspection and percussion, Group 4 corresponding to the enamel caries showed the highest secondary caries after sealant and was statistically significant difference in the order of initial group, stained group, sound group (p<0.05). 2) Inspection showed the highest percentage on tooth fissure caries diagnostic methods before sealant. 3) 56.6% didn`t know about DIAGNOdent, 91.6% didn`t have it. 4) In clinically, the most cause of secondary caries after sealant was a broken sealant, making caries on the downward. Based on the results of above study, degree of caries under sealant could affect on secondary caries, needs publicity about the use and necessity of objective fluorescence device.
Micropillar arrays enabling single microbial cell encapsulation in hydrogels.
Park, Kyun Joo,Lee, Kyoung G,Seok, Seunghwan,Choi, Bong Gill,Lee, Moon-Keun,Park, Tae Jung,Park, Jung Youn,Kim, Do Hyun,Lee, Seok Jae Royal Society of Chemistry 2014 Lab on a chip Vol.14 No.11
<P>Single microbial cell encapsulation in hydrogels is an important task to find valuable biological resources for human welfare. The conventional microfluidic designs are mainly targeted only for highly dispersed spherical bioparticles. Advanced structures should be taken into consideration for handling such aggregated and non-spherical microorganisms. Here, to address the challenge, we propose a new type of cylindrical-shaped micropillar array in a microfluidic device for enhancing the dispersion of cell clusters and the isolation of individual cells into individual micro-hydrogels for potential practical applications. The incorporated micropillars act as a sieve for the breaking of Escherichia coli (E. coli) clusters into single cells in a polymer mixture. Furthermore, the combination of hydrodynamic forces and a flow-focusing technique will improve the probability of encapsulation of a single cell into each hydrogel with a broad range of cell concentrations. This proposed strategy and device would be a useful platform for genetically modified microorganisms for practical applications.</P>
Highly lithium-ion conductive battery separators from thermally rearranged polybenzoxazole
Lee, Moon Joo,Kim, Ji Hoon,Lim, Hyung-Seok,Lee, So Young,Yu, Hyung Kyun,Kim, Jong Hun,Lee, Joo Sung,Sun, Yang-Kook,Guiver, Michael D.,Suh, Kyung Do,Lee, Young Moo The Royal Society of Chemistry 2015 Chemical communications Vol.51 No.11
<P>High power density lithium ion battery (HLIB) separators were fabricated for the first time from thermally rearranged poly(benzoxazole-<I>co</I>-imide) (TR-PBOI) nanofibrous membranes coated with TR-PBOI nanoparticles, which show distinct thermal and dimensional stabilities as well as excellent cycle retention and rate capability.</P> <P>Graphic Abstract</P><P>Lithium ion battery separators were fabricated for the first time from thermally rearranged poly(benzoxazole-<I>co</I>-imide) (TR-PBOI) nanofibrous membranes coated with TR-PBO nanoparticles. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc09411e'> </P>
Kim Do Yeon,Kang Jihoon,Jeong Han-Gil,Park Chan-Young,Kim Jun Yup,Kim Beom Joon,Han Moon-Ku,Bae Hee-Joon,Kim Baik Kyun 대한신경집중치료학회 2022 대한신경집중치료학회지 Vol.15 No.2
Background: Although atrial fibrillation (AF)-associated acute ischemic stroke (AIS) is on the rise, is devastating, and life-threatening, there is limited data on the clinical course and in-hospital mortality of patients treated in the intensive care unit (ICU). This study aimed to describe the clinical course and factors associated with in-hospital mortality in AF-associated AIS patients admitted to the ICU.Methods: This study was a retrospective analysis of a prospective nationwide multicenter cohort including non-valvular AF-AIS patients receiving ICU care admitted to 14 stroke centers in South Korea from 2017 to 2020. In-hospital outcomes, including in-hospital mortality and neurological deterioration (ND) have been described.Result: Amongst 2,487 AF-associated AIS patients, 259 (10.4%) were treated in the ICU. In-hospital mortality and ND occurred in 8.5% and 17.0% of the patients, respectively. Higher rates of initial National Institute for Health Stroke Scale scores, symptomatic steno-occlusive lesions, and CHA<sub>2</sub>DS<sub>2</sub>-VASc (Congestive Heart Failure, Hypertension, Age ≥75 [Doubled], Diabetes Mellitus, Prior Stroke or Transient Ischemic Attack [Doubled], Vascular Disease, Age 65–74, Female) scores were found in those with in-hospital mortality. The CHA<sub>2</sub>DS<sub>2</sub>-VASc score after admission increased the risk of in-hospital mortality (odds ratio [OR], 1.48; 95% confidence interval [CI], 1.00–2.18) were associated with in-hospital mortality. Antithrombotic use within 48 hours was related to decreased in-hospital mortality (OR, 0.26; 95% CI, 0.10–0.67).Conclusion: ICU care in AF-associated AIS is common, and the establishment of optimal treatment strategies in the ICU may be needed.
전신 마취중의 R-R 간격 Power Spectrum 의 변화양상 : 실시간 분석 및 감시장치 Real Time Analysis and Monitoring
김도형,김수택,정영균,함병문 대한마취과학회 1995 Korean Journal of Anesthesiology Vol.28 No.6
In general, anesthetic depth is evaluated by experience of anesthesiologist based on the changes of blood pressure and pulse rate. So it is difficult to guarantee the accuracy in evaluation of anesthetic depth. The efforts to develop the objective index for evaluation of anesthetic depth were continued but there was ression in this area. In recent EEG, evoked potential and law esophageal pressure are testad as monitoring tools of anesthetic depth. Heart rate variabilty provides much infarmation of autonomic activity of cardiovascular system and almost all anesthetics depress the autonamic activity. Novel monitoring system which can simply and exactly analyze the autonomic activity of cardiovascular system will provide important information for evaluation of anesthetic depth. In this aspect, development of real time R-R interval variability analysis system and evaluation of its efficacy for evaluation of anesthetic depth were performed. Newly developed real time R-R interval variability analysis system works by simple adaptation to EKG monitor, displays the color power spectrum every 30 seconds for at least 4 hours. So users can easily understand the whole trends during anesthesia and check the changes of short duration. And for the cutting expenditure of memory of personal computer this system is programmed to discard the calculated data of power spectrum after display on screen and saves only R-R interal of heart rate for off-line analysis. At first, function of real time R-R interval variability analysis system was tested with EKG simulator. Our system was well functioned in getting the signals from EKG, analyzing, displaying and saving the data. In animal experiment the changes in power of high frequency band assaciated with the changes of end tidal concentration of halothane (p$lt;0.05). And during intravenous infusion of propofol the changes of infusion amount induced the changes in power spectrum of each frequency band. After animal experiment clinical application was tried. During induction of N₂O-O₂-enflurane anesthesia and recovery, power of each frequency band was decreased and increased in trend. Endotracheal intubation and skin incision induced high peak of power of each frequency band. Standard score of power and trend curve using 3RSSH was used for the analysis of trend of power change and provide meaningful information of R-R interval variability.
Detection of Enterovirus, Cytomegalovirus, and Chlamydia pneumoniae in Atheromas
Tae Won Kwon,Do Kyun Kim,Jeong Sook Ye,Won Joo Lee,Mi Sun Moon,Chul Hyun Joo,Heuiran Lee,Yoo Kyum Kim 한국미생물학회 2004 The journal of microbiology Vol.42 No.4
To investigate the presence of infectious agents in human atherosclerotic arterial tissues. Atherosclerotic plaques were removed from 128 patients undergoing carotid endarterectomy or other bypass procedures for occlusive disease, and from twenty normal arterial wall samples, obtained from transplant donors with no history of diabetes, hypertension, smoking, or hyperlipidemia. Using the polymerase chain reaction (PCR) or reverse transcription-PCR, these samples were analyzed for the presence of Chlamydia pneumoniae, cytomegalovirus, enterovirus, adenovirus, herpes simplex viruses types 1 and 2, and Epstein-Barr virus. The amplicons were then sequenced, and phylogenetic analyses were performed. Enteroviral RNA was found in 22 of 128 atherosclerotic vascular lesions (17.2%), and C. pneumoniae and cytomegalovirus were each found in 2 samples (1.6%). In contrast, adenovirus, herpes simplex viruses, and Epstein-Barr virus were not identified in any of the atherosclerotic samples. Enterovirus was detected in 6/24 (25.0%) aortas, 7/33 (21.2%) carotid arteries, 6/40 (15.0%) femoral arteries, and 3/31 (9.7%) radial arteries of patients with chronic renal failure. There were no infectious agents detected in any of the control specimens. Using phylogenetic analysis, the enterovirus isolates were clustered into 3 groups, arranged as echovirus 9 and coxsackieviruses B1 and B3. Enteroviral RNA was detected in 17.2% of atherosclerotic plaques, but was not observed in any of the control specimens. This suggests a connection between enteroviral infection and atherosclerosis. These findings differ from those of other studies, which found more frequent incidence of C. pneumoniae and cytomegalovirus infection in atherosclerotic plaques.
Detection of Enterovirus, Cytomegalovirus, and Chlamydia pneumoniae in Atheromas
Kwon Tae Won,Kim Do Kyun,Ye Jeong Sook,Lee Won Joo,Moon Mi Sun,Joo Chul Hyun,Lee Heuiran,Kim Yoo Kyum The Microbiological Society of Korea 2004 The journal of microbiology Vol.42 No.4
To investigate the presence of infectious agents in human atherosclerotic arterial tissues. Atherosclerotic plaques were removed from 128 patients undergoing carotid endarterectomy or other bypass procedures for occlusive disease, and from twenty normal arterial wall samples, obtained from transplant donors with no history of diabetes, hypertension, smoking, or hyperlipidemia. Using the polymerase chain reaction (PCR) or reverse transcription-PCR, these samples were analyzed for the presence of Chlamydia pneumoniae, cytomegalovirus, enterovirus, adenovirus, herpes simplex viruses types 1 and 2, and Epstein-Barr virus. The amplicons were then sequenced, and phylogenetic analyses were performed. Enteroviral RNA was found in 22 of 128 atherosclerotic vascular lesions $(17.2\%),$ and C. pneumoniae and cytomegalovirus were each found in 2 samples $(1.6\%).$ In contrast, adenovirus, herpes simplex viruses, and Epstein-Barr virus were not identified in any of the atherosclerotic samples. Enterovirus was detected in 6/24 $(25.0\%)$ aortas, 7/33 $(21.2\%)$ carotid arteries, 6/40 $(15.0\%)$ femoral arteries, and 3/31 $(9.7\%)$ radial arteries of patients with chronic renal failure. There were no infectious agents detected in any of the control specimens. Using phylogenetic analysis, the enterovirus isolates were clustered into 3 groups, arranged as echovirus 9 and coxsackieviruses Bl and B3. Enteroviral RNA was detected in $17.2\%$ of atherosclerotic plaques, but was not observed in any of the control specimens. This suggests a connection between enteroviral infection and atherosclerosis. These findings differ from those of other studies, which found more frequent incidence of C. pneumoniae and cytomegalovirus infection in atherosclerotic plaques.
Kim, Chun Sung,Moon, In-Sung,Park, Ju-Hyun,Shin, Woo-Cheol,Chun, Hong Sung,Lee, Sook-Young,Kook, Joong-Ki,Kim, Heung-Joong,Park, Joo-Cheol,Endou, Hitoshi,Kanai, Yoshikatsu,Lee, Byung-Kwon,Kim, Do Kyun Pharmaceutical Society of Japan 2010 BIOLOGICAL & PHARMACEUTICAL BULLETIN Vol.33 No.7
<P>The purpose of this study was to examine the effect of 2-aminobicyclo-(2,2,1)-heptane-2-carboxylic acid (BCH), an inhibitor of L-type amino acid transporters, on the cell growth suppression in KB human oral cancer cells and to study the roles of cell cycle regulatory factors in the BCH-induced growth inhibition. The effect of BCH on cell growth suppression and the influence of BCH to cell cycle regulatory factors in KB cell growth inhibition were examined using cell cycle analysis, immunoblotting and immunoprecipitation. The BCH treatment induced cell cycle arrest at G1 phase in KB cells. The expression of cyclin D3 was remarkably decreased by BCH treatment. The BCH inhibited the expression of cyclin-dependent protein kinase 6 (CDK6) in a time-dependent manner. In addition, the expression of CDK inhibitor p27 was increased by BCH treatment in KB cells, but not CDK inhibitors p21 and p15. These results suggest that, in KB cells, the inhibition of LAT1 by BCH causes cell cycle arrest at G1 phase by inhibiting cyclin D3–CDK6 complex whereas increasing expression of a CDK inhibitor p27.</P>