http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Heterochiral Doped Supramolecular Coordination Networks for High-Performance Optoelectronics
Shang, Xiaobo,Song, Inho,Lee, Jeong Hyeon,Choi, Wanuk,Ohtsu, Hiroyoshi,Jung, Gwan Yeong,Ahn, Jaeyong,Han, Myeonggeun,Koo, Jin Young,Kawano, Masaki,Kwak, Sang Kyu,Oh, Joon Hak American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.22
<P>Chiral self-sorting has great potential for constructing new complex structures and determining chirality-dependent properties in multicomponent mixtures. However, it is still of great challenge to achieve high fidelity chiral self-discrimination. Besides, the researches on the coordination polymers or metal-organic frameworks for micro/nanooptoelectronics are still rare due to their low conductivity and difficulty in developing a rapid and simple scale-up synthetic method. Here, heterochiral supramolecular coordination networks (SCNs) were synthesized by the solvothermal reaction of naphthalene diimide enantiomers and cadmium iodide, using the chirality as a synthetic tuning parameter to control the morphologies. Intriguingly, heterochiral micro/nanocrystals exhibited photochromic and photodetecting properties. Furthermore, we also developed a simple and efficient doping method to enhance the conductivity and photoresponsivity of micro/nanocrystals using hydrazine. From experimental and theoretical studies, the mechanism was suggested as follows: the radicals in the singly occupied molecular orbital level of the ligands provide charge carriers that can undergo “through-space” transport between π-π stacked ligands and the electron transfer from adsorbed hydrazine to the SCNs results in reduction of energy gap, leading to increased conductivity. Our findings demonstrate a simple and powerful strategy for implementing coordination networks with redox ligands for micro/nanooptoelectronic applications.</P> [FIG OMISSION]</BR>
Clinical Significance of Slow Recovery of Graft Function in Living Donor Kidney Transplantation
Lee, So Young,Chung, Byung Ha,Piao, Shang Guo,Kang, Seok Hui,Hyoung, Bok Jin,Jeon, Youn Joo,Hwang, Hyeon Seok,Yoon, Hye Eun,Choi, Bum Soon,Kim, Ji-Il,Moon, In Sung,Kim, Yong-Soo,Choi, Yeong Jin,Yang, Lippincott Williams Wilkins, Inc. 2010 Transplantation Vol.90 No.1
BACKGROUND.: The clinical significance of slow recovery of graft function (SGF) in living donor kidney transplantation is unclear. We evaluated the incidence, risk factors, and clinical outcome of SGF in living donor transplantation. METHODS.: Three hundred ten living donor kidney recipients were included and categorized into immediate recovery of graft function (IGF; n=239) and SGF (n=71), according to estimated glomerular filtration rate (60 mL/min/1.73 m) at posttransplant day 14. We compared the clinical parameters, protocol biopsy findings, acute rejection (AR), and 10-year graft survival between the two groups. RESULTS.: The SGF group had an older recipient age, lower ratio of donor to recipient body mass index, and higher incidence of AR than IGF group, as shown by protocol biopsies. The SGF group had significantly more AR episodes than IGF group within 12 months (21.1% vs. 13.4%, P<0.05) and during follow-up period (32.4% vs. 20.1%, P<0.05). The 10-year graft survival rate did not differ between groups, but AR presence was significantly associated with a lower graft survival in the SGF group than the IGF group (64.9% vs. 78.9%, P<0.05). CONCLUSIONS.: SGF in the early posttransplant period is immunologically active and should be considered as one of the risk factors for determining long-term graft survival in living donor kidney transplantation.
Helicobacter pylori의 Kato III 세포내 발견
백승철,이정희,고경혁,조명제,조중현,김유경,윤희상,이우곤,이광호,강수민 대한소화기학회 1998 대한소화기학회지 Vol.31 No.6
Background/Aims; Some investigaters reported that the invasion of H. pylori into the gastric epithelial cells or lamina propria had been detected by light microscopie examination using various staining methods (i,e. the Warthin-Starry stain, immunohistologic stain) or by electron microscopic examination. However, the results are hardly convinced because they may be nonspecifically stained, or the intracytoplasmic organelles of the gastric epithelial cells may be mistaken for bacteria. Thus, we combined an immunohistologic method with an electron microscopy to deterrnine whether H. pylori is invasive into the gastric epithelial cells. Metbods: To enhance bacterial invasion, we adapted an in vitro system using Kato III cells, a gastric carcinoma eell line. The cells were infected with H. pylori. The infection was confirmed by staining with polyelonal antibody against H. pylori. and an electron microscopy. Resnlts: H. pylori was found within the cytoplasm of several Kato III cells. The intracellular bacteria could be differentiated from intracellular organelles or other bacteria-looking materials by gold particles attached to the bacteria, Conclusions: We could not elucidate the invasiveness of H. pylori, but we found the presence of H. pylori in the cytoplasm of the Kato III cells. These results indicate that the invasiveness of H. pylori will remain as one of the factors participating in the pathogenesis oF H. pylori-induced chronic gastritis and peptic ulcer. Further studies will be needed to demonstrate the invasiveness of H. pylori.
Dexamethsone Cotreatment Antoginizes FK506-induced Antitumor Effects in Hepatocarcinoma Cell
Hye Min Park,Sei Jin Lee,Hyeon Kyu Go,Ypung Ran Park,A Reum Mun,Ra Mi Park,Gi Beum Kim,Seong Jong Kim,Sung Zoo Kim,Chul Un Hong,Jin Shang Kim,Hyung Sub Kang,Shang Jin Kim 대한수의학회 2011 대한수의학회 학술대회발표집 Vol.2011 No.-
김대성,박재현,정현정,신상훈,이숭현 인제대학교 1997 仁濟醫學 Vol.18 No.4
소뇌경색증은 전체 뇌경색 중에서 비교적 적은 비율을 차지하는 질환이나 환자의 생명을 위협할 수도 있기 때문에 정확한 진단이 필요하다. 저자들은 본 연구에서 소뇌경색증 40예의 임상증상, 신경학적 징후를 알아보고 위험 인자, 혈관 구역, 경색의 크기 등을 조사하고 환자의 예후에 영향을 끼치는 요인들에 대해서 분석하였다. 소뇌경색증의 가장 흔한 증상과 징후는 현훈, 구토, 체간 및 사지 실조였으며 증상, 징후와 예후는 혈관 구역에 따라 차이가 없었다. 경색의 크기가 클 때, 심인성 색전이 존재할 때 그리고 내원 당시의 의식이 나쁠 때 소뇌경색증 환자의 예후가 좋지 않았다. Objective : Cerebellar infarction is not common but it can give vital influence on the neighboring structures. Therefore, it is important to make correct diagnosis and know general clinical features including prognosis. We performed this study to explore the full spectrum of the clinical characteristics, neurologic signs, vascular territories, prognosis and neuroimaging findings of cerebellar infarction. Methods : We retrospectively studied 40 patients with cerebellar infarction diagnosed by computed topography and/or magnetic resonance imaging who admitted during 5 years. Results : The background and risk factors were similar to those wish infarctions of the cerebral hemispheres. The embolic infarctions were 37.5%. Infarcts involving the superior cerebellar artery (SCA) region and the posterior inferior cerebellar artery (PICA) region were far more frequent than those involving the anterior inferior cerebellar artery (AICA) region. The most common and earliest symptoms were dizziness or vertigo. The symptoms and signs of cerebellar lesion such as unsteady gait, limb and/or trunk ataxia were also the main clinical manifestations. Conclusion : These findings indicate similar frequencies of SCA and PICA territory infarcts and illustrate some differences in clinical presentation but do not illustrate the differences in outcomes between SCA and PICA infarcts. They also indicate that not only in situ thrombosis but also cardiogenic embolism play important roles in the pathogenesis of cerebellar infarction. The factors affecting the prognosis are size of infarction, the presence of cardiogenic embolism and consciousness disturbance.