http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Risk Factor of Post-Polypectomy Bleeding in Early Liver Cirrhosis
( Youn Ju Jeon ),( Kyung Hoon Lee ),( Hyuk Soo Choi ),( Jung Hee Kwon ),( Kyoung Min Sohn ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: Bleeding is the most common colonoscopic polypectomy complication. However, the risk of post-polypectomy bleeding in liver cirrhosis is unknown. We aimed to investigate the incidence and risk factors of post-polypectomy bleeding after a colonoscopic polypectomy in patients with early liver cirrhosis(LC). Methods: We performed a retrospective study of patients with early LC who underwent colonoscopic polypectomy at a single center between January 2006 and December 2015. In total, 41 patients with early LC were enrolled. We investigated the incidence of immediate PPB (IPPB) and delayed PPB (DPPB) in these patients. Results: Among 41 patients, 36 (87.8%) were Child-Turcotte-Pugh class A, 5 (12.2%) were class B. The mean prothrombin time was 1.26 ± 0.33, and the mean platelet count was 124.87 ± 71.32 × 103/L. A total of 78 polyps in 41 patients were removed. IPPB was observed 5 (6.41 %) of the 78 removed polyps presented with mild oozing and were controlled by hemostatic procedures using endoscopic hemoclips. Both IPPB and non IPPB group, during the observation period there were no DPPB. Conclusions: The risk of hemorrhage after polypectomy in the case of early cirrhosis of the liver did not increase significantly. However, when the size of the polyps are large, it is necessary to caution about bleeding after polypectomy.
Kim, Sujin,Sohn, Ju Hae,Ha, Sung Yong,Kang, Habyeong,Yim, Un Hyuk,Shim, Won Joon,Khim, Jong Seong,Jung, Dawoon,Choi, Kyungho American Chemical Society 2016 Environmental science & technology Vol.50 No.11
<P>A crude oil and the coastal sediments that were affected by the Hebei Spirit Oil Spill (HSOS) of Taean, Korea were investigated for thyroid hormone disruption potentials. Water-accommodated fractions (WAFs) of Iranian Heavy crude oil, the major oil type of HSOS, and the porewater or leachate of sediment samples collected along the coast line of Taean were tested for thyroid disruption using developing zebrafish and/or rat pituitary GH3 cells. Major polycyclic aromatic hydrocarbons (PAHs) and their alkylated forms were also measured from the test samples. In zebrafish larvae, significant decreases in whole-body thyroxine (T-4) and triiodothyronine (T-3) levels, along with transcriptional changes of thyroid regulating genes, were observed following 5 day exposure to WAFs. In GH3 cells, transcriptions of thyroid regulating genes were influenced following the exposure to the sediment samples, but the pattern of the regulatory change was different from those observed from the WAFs. Composition of PAHs and their alkylated homologues in the WAFs could partly explain this difference. Our results clearly demonstrate that WAFs of crude oil can disrupt thyroid function of larval zebrafish. Sediment samples also showed thyroid disrupting potentials in the GH3 cell, even several years after the oil spill. Long-term ecosystem consequences of thyroid hormone disruption due to oil spill deserve further investigation.</P>
졸 - 겔법으로 제조된 비정질의 텅스텐 산화물을 박막과 황산 전해질 계면에서 일어나는 수소의 층간 반응에 대한 전기화학적 특성
강태혁,민병철,주재백,손태원,조원일 ( Tae Hyuk Kang,Byoung Chul Min,Jeh Beck Ju,Tae Won Sohn,Won Il Cho ) 한국공업화학회 1996 공업화학 Vol.7 No.6
본 연구에서는 W-IPA(peroxo-polytungstic acid)를 출발 물질로 하는 졸 용액을 ITO(indium tin oxide)가 입혀진 유리판 위에 침적 도포(dip-coating) 방법으로 침적시키고, 이것을 겔화시킨 후에 열처리하여 전기 발색 소자(electrochromic device, ECD)의 텅스텐 산화물 박막 전극을 만들어 이의 전기화학적인 특성을 고찰하였다. 가장 좋은 전기 화학적 특성을 나타내는 조건은 29/10mL(W-IPA/H₂O)졸 용액에 15회 침적 도포하여 230∼240℃의 온도로 최종 열처리 한 텅스텐 산화물 박막 전극이었으며, 침적 횟수의 증가에 따라 산화 텅스텐 박막의 두께는 비례하여 증가하였고, 5회 침적 도포 이후에는 1회 침적 도포시 약 60 두께로 막이 생성됨을 알 수 있었다. 졸-겔법으로 제조된 텅스텐 산화물 박막 전극은X-선 회절 분석에 의하여 비정질 구조, 주사 전자 현미경에 의하여 박막 표면은 균일한 로조사되었다. 다중 순환 전류-전위 주사법에 의하여 작성된 전류-전위 곡선에 의하면 순환 횟수가 수백회 이상임에도 불구하고 소·발색은 뚜렷하게 나타났으나, 더욱 많은 순환 횟수에서는 전해질인 황산 수용액 중에서 텅스텐 산화물 박막의 박리 현상이 일어나 소·발색의 전류 밀도는 차츰 감소하였다. 전위 주사 속도를 변화시키면서 순환 전류-전위 주사법에 의하여 작성된 전류-전위 곡선으로부터 구한 전기화학적 특성 값을 이용하여 반응에 참여하는 수소 이온의 확산 계수를 구할 수 있었다. The peroxo-polytungstic acid was formed by the direct reaction of tungsten powder with the hydrogen peroxide solution. Peroxo-polytungstic powder were prepared by rotary evaporator using the fabricated on to ITO coated glass as substrate by dip-coating method using 2g/10mL(W-IPA/H₂O) sol solution. A substrate was dipped into the sol solution and after a meniscus had settled, the substrate was withdrawn at a constant rate of the 3mm/sec. Thicker layer could be built up by repeated dipping/post-treatment 15 times cycles. The layer dried at the temperature of 65∼70℃ during the withdrawn process, and then tungsten oxides thin film was formed by final heating treatment at the temperature of 230∼240℃ for 30min. A linear relation between the thickness of thin film and the number of dipping/post-treatment cycles for tungsten oxides thin films made by dip-coating was found. The thickness of thin film had 60 after one dipping. From the patterns of XRD, the structure of tungsten oxides thin film identified as amorphous one and from the photographs of SEM, the defects and the moderate cracks were observed on the tungsten oxides thin film, but the homogeneous surface of thin films were mostly appeared. The electrochemical charateristic of the ITO/WO₃ thin film electrode were conformed by the cyclic voltammetry and the cathodic Tafel polarization method. The colaring-bleaching processes were clearly repeated up to several hundreds cycles by multiple cyclic voltammetry, but the dissolved phenomenon of thin film revealed in H₂SO₄ solution was observed due to the decrease of the current densities. The diffusion coefficient was calculated from irreversible Randles-Sevick equation from the data obtained by the cyclic voltammetry with various scan rates.
Immunohistochemical Study on the Hair Growth Promoting Effect of Yonnyuniksoogobon-dan
Jeong, Chun-Geun,Park, Min-Hee,Seong, Ju-Won,Lee, Hyun-Sam,Park, Seong-Kyu,Kim, Sun-Yeou,Kim, Yoon-Bum,Jung, Hyuk-Sang,Sohn, Nak-Won,Sohn, Young-Joo The Society of Korean Medicine 2008 대한한의학회지 Vol.29 No.5
Objectives : This study evaluates the hair growth promoting effect of Yonnyuniksoogobon-dan on shaved C57BL6 mice. Methods : Yonnyuniksoogobon-dan was administered orally (Group I) and both orally and by skin application (Group II) once a day for 12 days. The experimental groups were compared to Control, which was orally administered physiological saline solution. Hair regrowth was photographically and histologically determined during the experimental period. The levels of hair growth cycle related factors (EGF, TGF-${\beta}$1) and vascular factors (VEGF, iNOS) were also determined by immunohistochemistry. On gross observation of hair growth, both Group I and Group II shaved C57BL6 mice showed accelerated hair regrowth. Results : The hair regrowth index of Group I increased significantly from 7 days (P<0.05) to 12 days (P<0.01) after shaving and that of Group II was significantly higher at 12 days (P<0.05). On histological observation, both Group I and Group II demonstrated histological improvement and increases in the number and diameter of the hair follicles. EGF expression on the root sheath of hair follicles was up-regulated in both Group I and II. TGF-${\beta}$1 expression on the root sheath of hair follicles was unchanged in both Group I and II. VEGF expression in the tissues surrounding hair follicles was up-regulated in both groups. iNOS expression in the tissues surrounding hair follicles was down-regulated in both groups. Conclusions : These results suggest that Yonnyuniksoogobon-dan promotes hair growth and this effect is related to up-regulation of EGF and VEFG expression and down-regulation of TGF-${\beta}$1 and iNOS expression on hair roots.