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Effect of Korean Red Ginseng in chronic liver disease
Park, Tae Young,Hong, Meegun,Sung, Hotaik,Kim, Sangyeol,Suk, Ki Tae The Korean Society of Ginseng 2017 Journal of Ginseng Research Vol.41 No.4
Chronic liver disease, one of the most common diseases, typically arises from nonalcoholic fatty liver disease, alcoholic liver disease, chronic viral hepatitis, or hepatocellular carcinoma. Therefore, there is a pressing need for improved treatment strategies. Korean Red Ginseng has been known to have positive effects on liver disease and liver function. In this paper, we summarize the current knowledge on the beneficial effects of Korean Red Ginseng on chronic liver disease, a condition encompassing nonalcoholic fatty liver disease, alcoholic liver disease, chronic viral hepatitis, and hepatocellular carcinoma, as supported by experimental evaluation and clinical investigation.
Park, Jungyu,Lee, Beom,Shin, Wonbeom,Jo, Sangyeol,Jun, Hangbae Elsevier 2018 Journal of cleaner production Vol.188 No.-
<P><B>Abstract</B></P> <P>Psychrophilic bio-electrochemical anaerobic digestion (PBEAD) is a promising new technology for improving methane production at low temperatures via supply of low energy. In this study, a PBEAD reactor operating at 19.8 ± 2.9 °C equipped with a low-cost stainless steel (SUS304) rotating impeller electrode was manufactured to observe the efficiency of methane production and changes in archaeal communities at a high organic loading rate (OLR). Stable methane production was achieved without VFA accumulation and pH decrease in the PBEAD reactor up to an OLR of 4.5 kg/m<SUP>3</SUP>·d owing to H<SUB>2</SUB>-dependent methylotrophic and hydrogenotrophic methanogens, which converted H<SUB>2</SUB> into methane. In the case of an OLR of 6.0 kg/m<SUP>3</SUP>·d, methane production decreased significantly due to decreased pH and accumulated VFAs, but recovered on increasing the alkalinity. The maximum energy efficiency of 71.7% confirmed the high performance of the PBEAD reactor equipped with an SUS304 rotating impeller electrode.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Stainless steel impeller electrode was used as a cost-efficient and maintainable material. </LI> <LI> Stable methane production achieved in PBEAD reactor. </LI> <LI> PBEAD reactor prevents pH decrease and VFAs accumulation. </LI> <LI> H<SUB>2</SUB>-dependant methylotrophic and hydrogenotrophic methanogens were dominated in PBEAD reactor. </LI> </UL> </P>
Park, Jungyu,Lee, Beom,Shin, Wonbeom,Jo, Sangyeol,Jun, Hangbae Elsevier 2018 Bioresource technology Vol.259 No.-
<P><B>Abstract</B></P> <P>In this study, a practical bioelectrochemical anaerobic digestion (BEAD) reactor equipped with a rotating STS304 impeller was tested to verify its methane production performance. Methane production in the BEAD reactor was possible without accumulation of volatile fatty acids (VFAs) and decreases in pH at high organic loading rates (OLRs) up to 6 kg-COD/m<SUP>3</SUP>·d (COD: chemical oxygen demand). Methane production in a BEAD-O (open circuit) reactor was inhibited at OLRs above 4 kg-COD/m<SUP>3</SUP>·d; however, the performance could be recovered bioelectrochemically by supplying voltage. The population density of hydrogenotrophic methanogens increased to 73.3% in the BEAD-C (closed circuit) reactor, even at high OLRs, through the removal of VFAs and conversion of hydrogen to methane. The energy efficiency in the BEAD-C reactor was 85.6%, indicating that the commercialization of BEAD reactors equipped with rotating STS304 impeller electrodes is possible.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Rotating-anode bioelectrochemical anaerobic digestion (BEAD) reactor was devised. </LI> <LI> Stainless steel used as a cost-effective and durable electrode material. </LI> <LI> BEAD-C produced CH<SUB>4</SUB> without pH decrease or VFA accumulation at high OLRs. </LI> <LI> CH<SUB>4</SUB> production recovered in BEAD-O with supplied voltage at high OLRs. </LI> <LI> Voltage-induced hydrogenotrophic methanogenesis in BEAD-C gave stable CH<SUB>4</SUB> yields. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Kwanghyeon Park,Sangyeol Lee 물리치료재활과학회 2021 Physical therapy rehabilitation science Vol.10 No.3
Objective: The purpose of this study was to changes in respiratory function due to differences in mask blocking grade, and effects on cardiovascular function during aerobic exercise. Design: Comparative study using paired t-test and analysis of variance measures. Methods: Male and female subjects were randomly divided into 4 groups according to mask blocking grade and measured respiratory functions before and after wearing the mask using spirometers, and their cardiovascular capabilities were measured using pulse oxygen meters and blood pressure meters before and after running for 10 minutes wearing mask. Used paired t-test, one-way ANOVA and Bonferroni post-test to compare the differences according to the mask blocking grade. Results: The experimental results verified that three groups except for the Non-mask group had a significant reduction in all values of FVC, FEV1, MVV, and PEF after wearing a mask compared to those before wearing a mask(p<0.05). Also a significant difference in cardiovascular functions was also observed after aerobic exercises wearing mask in all groups and there was a significant difference between all four groups(p<0.05). Conclusions: Lung patients with poor breathing, elderly and children with poor lung function, and professional groups who need to wear masks and take high-intensity work or aerobic movements are encouraged to take frequent breaks in advance, wear masks and social distancing at moderate and low levels.
어깨관절벌림 각도에 따른 어깨주변 근육들의 참여 비율에 대한 연구
박민철 ( Park Minchull ),이상열 ( Lee Sangyeol ) 대한통합의학회 2017 대한통합의학회지 Vol.5 No.2
Purpose: The purpose of this study was to determine the muscle activity ratio according to the shoulder abduction angle by identifying the mean muscle activities and calculating the muscle ratios for use in developing strengthening methods. Methods: The participants were healthy adults in their 20s (n=19). The activity of the deltoid middle, upper trapezius, middle trapezius, and lower trapezius muscles was measured by 8-channel surface electromyography. Muscle activity was measured during 4 conditions of angle of shoulder abduction: 30°, 60°, 90°, and 120°. The data used in the analysis were the root mean square and % total muscle activity values. Results: The root mean square values for the deltoid middle, upper trapezius, middle trapezius, and lower trapezius muscles showed significant differences. No significant differences were detected in the % total muscle activity of the deltoid middle, upper trapezius, middle trapezius, or lower trapezius muscles. Conclusion: Future studies aimed at developing selective shoulder abductor muscle strengthening methods are likely to provide more effective results by using muscle activity ratios.
On Fisher’s dispersion test for integer-valued autoregressive Poisson models with applications
Lee, Sangyeol,Park, Siyun,Chen, Cathy W. S. Informa UK (TaylorFrancis) 2017 Communications in Statistics Vol.46 No.20
<P>The integer-valued autoregressive (INAR) model has been widely used in diverse fields. Since the task of identifying the underlying distribution of time-series models is a crucial step for further inferences, we consider the goodness-of-fit test for the Poisson assumption on first-order INAR models. For a test, we employ Fisher's dispersion test due to its simplicity and then derive its null limiting distribution. As an illustration, a simulation study and real data analysis are conducted for the counts of coal mining disasters, the monthly crime data set from New South Wales, and the annual numbers of worldwide earthquakes.</P>
스폰지 및 세라믹 여재를 이용한 초기우수 여과장치의 최적설계인자 분석
조상열 ( Sangyeol Jo ),이범 ( Beom Lee ),박준규 ( Jungyu Park ),신원범 ( Wonbeom Shin ),석붕 ( Shi Peng ),전항배 ( Hang-bae Jun ) 충북대학교 산업과학기술연구소 2017 산업과학기술연구 논문집 Vol.31 No.1
Non point pollutants flowing contain various harmful substances releasing into the river water during rainfall. It is very important to control the initial storm water runoff. There are various methods to control the non point pollutants contained in the initial storm water, such as pond, wetlands, infiltration system, filtration system, and open channel system. Among them, a filtration system is an efficient and feasible system occupying relatively small site area. In this study, the optimum design parameters of an upflow filtration system using sponge and ceramic media were obtained from the betch scale experiments. As a result, 80% SS removal was possible at a filtration rate of 20m/h with 60cm depth of filter media. Recovery of head loss through backwashing, both with 30L/min of air and 30L/min of treated water. It is required for more than 7min.