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서원명 ( Won Myung Suh ),임재운 ( Jae Woon Leem ),김영주 ( Young Ju Kim ),민영봉 ( Young Bong Min ),김현태 ( Hyeon Tae Kim ),허무룡 ( Moo Ryong Huh ),윤용철 ( Yong Cheol Yoon ) 경상대학교 농업생명과학연구원(구 경상대학교 농업자원이용연구소) 2010 농업생명과학연구 Vol.44 No.4
경상대학교 교내에 설치되어 있는 1-2W형 온실을 대상으로 전기 방열기를 이용하여 국화 재배온실의 난방효과를 검토한 결과는 다음과 같다. 실험기간동안 최고, 평균 및 최저 외기온은 각각 -3.8~21.3℃, -5.2~16.1℃ 및 -12.5~14.4℃ 정도의 범위로 나타났으며, 온실 내외의 평균상대습도 각각 43.5~98.6% 및 35.2~100%로 나타났다. 12월 중순부터 2월 상순까지 최저 외기온은 대략 -5.0~-10.0℃ 전후로 나타나 진주기상대의 최근 자료와 비교하면 상대적으로 최저기온이 낮게 나타나는 경향이 있었다. 야간의 경우, 방열기 직하부의 엽온이 방열기 중간 지점에서 측정한 엽온 보다 크게 2~3℃정도 높게 나타나거나 또는 미미하지만 약간 높게 나타나는 경향이 있었다. 근권부의 경우, 직하부나 중간 지점에서의 온도 차이는 거의 없는 것으로 나타났고, 근권부의 최고온도와 기타 최고 온도의 발생 시점을 보면, 약 2시간정도의 지체현상이 있음을 알 수 있었다. 그리고 실험기간동안 난방에 소요된 총 소비전력량, 공급에너지 및 총 난방비는 각각 2,800kWh, 2,408,000kcal 및 112,000won 정도였다. 화석연료인 경유로 난방할 경우, 총 난방비는 224,500won 정도였다. 방열기를 이용하여 난방할 경우, 난방비를 약 50% 정도 줄일 수 있을 것으로 판단되었다. An analysis in heating effects of an electric radiator located in a 1-2W type chrysanthemum (3 cultivars) cultivation greenhouse installed in Gyeongsang National University drew the following conclusions. During the experiment period, the highest, average, and the lowest outside temperatures were in the ranges of -3.8~21.3℃, -5.2~16.1℃ and -12.5~14.4℃, respectively, and the average relative humidity inside and outside the greenhouses were in the ranges of 43.5~98.6% and 35.2~100%, respectively. From mid-December to early February, the lowest outside temperature was recorded as approximately -5.0~-10.0℃, which showed that it tended to be relatively lower than the temperatures recorded at the Jinju Meteorological Observatory. During the night, the leaf temperature measured directly under the radiator tended to be higher by 2~3℃ than that those at the middle point of the radiator, or higher by anegligible amount. In the case of root zone temperature, it was found that there was almost no difference between temperatures of the part directly under and the middle point, and the time when the highest temperature of root zone and other highest temperatures took place showed that there was about a 2-hour delay phenomenon. The total electricity consumption, energy supply and total heating cost during the experiment period were 2,800 kWh, 2,408,000 kcal and 112,000 won, respectively. When diesel, a kind of fossil fuel, was used as heating oil, the total heating cost was around 224,500 won. It was estimated that the total heating cost could be reduced by around 50% if a radiator was used.
Tissue distribution of LOM strain viral antigens using immunohistochemistry in weaned pigs in Jeju
Jae-Sung Heo(Jae-Sung Heo),Jae-Beum Kim(Jae-Beum Kim),Yun-Ho Kim(Yun-Ho Kim),Hyoung-Nam Jo(Hyoung-Nam Jo),Won-Gyu Cho(Won-Gyu Cho),Myeong-Won Suh(Myeong-Won Suh),Hyoung-Seok Yang(Hyoung-Seok Yang),Wan 한국예방수의학회 2019 한국예방수의학회 학술대회자료집 Vol.2018 No.-
Immunohistochemical detection of LOM strain viral antigens in suckling piglets in Jeju
Jae-Beum Kim(Jae-Beum Kim),Won-Gyu Cho(Won-Gyu Cho),Yun-Ho Kim(Yun-Ho Kim),Hyoung-Nam Jo(Hyoung-Nam Jo),Jae-Sung Heo(Jae-Sung Heo),Myeong-Won Suh(Myeong-Won Suh),Hyoung-Seok Yang(Hyoung-Seok Yang),Wan 한국예방수의학회 2019 한국예방수의학회 학술대회자료집 Vol.2018 No.-
( Jae-kyung Won ),( Su Jong Yu ),( Chae Young Hwang ),( Joong-won Park ),( Won-mook Choi ),( Hyeki Cho ),( Eun Ju Cho ),( Jeong-hoon Lee ),( Kyung Bun Lee ),( Yoon Jun Kim ),( Kyung-suk Suh ),( Ja-jun 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: Predictive biomarkers for sorafenib in hepatocellular carcinoma (HCC) are still not available, despite the modest benefit of sorafenib. We present a novel and sensitive biomarker that can predict the responsiveness to sorafenib. Methods: A candidate biomarker was found through differential mRNA expression analysis between sorafenib-sensitive and resistant cell lines from The Cancer Cell Line Encyclopedia (CCLE), a public data base. It was tested with in vitro shRNA experiments for its effect to sorafenib-resistance. Consecutive patients with HCC who had undergone sorafenib treatment were included from a prospective cohort and the test set (n=48) and the validation set (n=46) were established. Specimens were archived before sorafenib treatment and a candidate marker was evaluated by the quantitative digital analysis algorithm for immunohistochemistry with regard to their association with response assessment by mRECIST, time to progression (TTP) and overall survival (OS). Further, we performed additional validation study using serum samples before sorafenib treatment obtained from different set of HCC patients (n=40). Results: Endothelin-1 (EDN1, ET-1) was the only differentially expressed molecule between sorafenib-sensitive and resistant cell lines. Knock-down of EDN1 in HCC cell line increased sorafenib sensitivity. In test set, low EDN1 expression group showed significantly better response to sorafenib (non-progressive disease) compared to high EDN1 expression group (72.7% versus 2.7%, respectively; P<0.001). With the same criteria for the validation set, EDN1 expression maintained predictability for sorafenib responsiveness. Survival analysis showed that high EDN1 expression was an independent prognostic factor for poor OS (hazard ratio [HR〕, 2.374; 95% confidence interval [CI〕, 1.051-5.360; P=0.037) and short TTP (HR, 1.907; 95% CI, 1.085-3.350; P=0.025) after sorafenib treatment. We confirmed our results in serum samples of another set. Conclusions: EDN1 expression can distinguish responders to sorafenib and can be a useful predictive biomarker for sorafenib in HCC.
Molecular Diagnosis of <i>Taenia saginata</i> Tapeworm Infection in 2 Schoolchildren, Myanmar
Won, Eun Jeong,Jung, Bong-Kwang,Song, Hyemi,Kim, Mi-Seon,Kim, Hyun-Seung,Lee, Keon Hoon,Kim, Min-Jae,Shin, Myung Geun,Shin, Jong Hee,Suh, Soon-Pal,Hong, Sung-Jong,Sohn, Woon-Mok,Htoon, Thi Thi,Tin, Ht Centers for Disease Control and Prevention 2018 Emerging infectious diseases Vol.24 No.6
<P><I>Taenia saginata</I> is the most common human tapeworm worldwide but has been unknown in Myanmar. In 2017, fecal examination in Yangon, Myanmar, revealed eggs of <I>Taenia</I> species in 2 children from a monastic school. Several proglottids expelled after medication with praziquantel were morphologically and molecularly confirmed to be <I>T. saginata</I> tapeworms.</P>
Suh Yun Seok,Choi Jae Won,Yoon Jeong Hee,Lee Dong Ho,Kim Yoon Jun,Lee Jeong-Hoon,Yu Su Jong,Cho Eun Ju,Yoon Jung-Hwan,Lee Jeong Min 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.12
Objective: This study aimed to compare the efficacy between no-touch (NT) radiofrequency ablation (RFA) and conventional RFA using twin internally cooled wet (TICW) electrodes in the bipolar mode for the treatment of small hepatocellular carcinomas (HCC). Materials and Methods: In this single-center, two-arm, parallel-group, prospective randomized controlled study, we performed a 1:1 random allocation of eligible patients with HCCs to receive NT-RFA or conventional RFA between October 2016 and September 2018. The primary endpoint was the cumulative local tumor progression (LTP) rate after RFA. Secondary endpoints included technical conversion rates of NT-RFA, intrahepatic distance recurrence, extrahepatic metastasis, technical parameters, technical efficacy, and rates of complications. Cumulative LTP rates were analyzed using Kaplan-Meier analysis and the Cox proportional hazard regression model. Considering conversion cases from NT-RFA to conventional RFA, intentionto- treat and as-treated analyses were performed. Results: Enrolled patients were randomly assigned to the NT-RFA group (37 patients with 38 HCCs) or the conventional RFA group (36 patients with 38 HCCs). Among the NT-RFA group patients, conversion to conventional RFA occurred in four patients (10.8%, 4/37). According to intention-to-treat analysis, both 1- and 3-year cumulative LTP rates were 5.6%, in the NT-RFA group, and they were 11.8% and 21.3%, respectively, in the conventional RFA group (p = 0.073, log-rank). In the as-treated analysis, LTP rates at 1 year and 3 years were 0% and 0%, respectively, in the NT-RFA group sand 15.6% and 24.5%, respectively, in the conventional RFA group (p = 0.004, log-rank). In as-treated analysis using multivariable Cox regression analysis, RFA type was the only significant predictive factor for LTP (hazard ratio = 0.061 with conventional RFA as the reference, 95% confidence interval = 0.000–0.497; p = 0.004). There were no significant differences in the procedure characteristics between the two groups. No procedure-related deaths or major complications were observed. Conclusion: NT-RFA using TICW electrodes in bipolar mode demonstrated significantly lower cumulative LTP rates than conventional RFA for small HCCs, which warrants a larger study for further confirmation.
Effect of pertussis toxin pretreated centrally on blood glucose level induced by stress
Suh, Hong-Won,Sim, Yun-Beom,Park, Soo-Hyun,Sharma, Naveen,Im, Hyun-Ju,Hong, Jae-Seung The Korean Society of Pharmacology 2016 The Korean Journal of Physiology & Pharmacology Vol.20 No.5
In the present study, we examined the effect of pertussis toxin (PTX) administered centrally in a variety of stress-induced blood glucose level. Mice were exposed to stress after the pretreatment of PTX (0.05 or 0.1 mg) i.c.v. or i.t. once for 6 days. Blood glucose level was measured at 0, 30, 60 and 120 min after stress stimulation. The blood glucose level was increased in all stress groups. The blood glucose level reached at maximum level after 30 min of stress stimulation and returned to a normal level after 2 h of stress stimulation in restraint stress, physical, and emotional stress groups. The blood glucose level induced by cold-water swimming stress was gradually increased up to 1 h and returned to the normal level. The intracerebroventricular (i.c.v.) or intrathecal (i.t.) pretreatment with PTX, a $G_i$ inhibitor, alone produced a hypoglycemia and almost abolished the elevation of the blood level induced by stress stimulation. The central pretreatment with PTX caused a reduction of plasma insulin level, whereas plasma corticosterone level was further up-regulated in all stress models. Our results suggest that the hyperglycemia produced by physical stress, emotional stress, restraint stress, and the cold-water swimming stress appear to be mediated by activation of centrally located PTX-sensitive G proteins. The reduction of blood glucose level by PTX appears to due to the reduction of plasma insulin level. The reduction of blood glucose level by PTX was accompanied by the reduction of plasma insulin level. Plasma corticosterone level up-regulation by PTX in stress models may be due to a blood glucose homeostatic mechanism.