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심성흠 ( Sung Heum Sim ),감철우 ( Cheol Woo Kam ),김진영 ( Jin Young Kim ),백상인 ( Sang In Baek ),이병권 ( Byung Gwon Lee ),손호영 ( Ho Young Son ) 대한경락경혈학회 2009 Korean Journal of Acupuncture Vol.26 No.4
Objectives: The object of this study is to report on the theory of Ohaeng-Hwa Acupuncture Therapy. Methods: The theory of Ohaeng-Hwa Acupuncture Therapy(OHAT; 五行和針法) is a part of the Five Elements Theory unique to Korea. This research Classic of Difficulty Issues-Nan Jing review Ohaeng-Hwa Acupuncture Therapy. Results: OHAT, created and developed by Jae-hoon Song, integrates the victor-vanquished as well as the son-mother relationship of the Five Elements of breakdown and restoration of balance between yin and yang. And also, it provides resources and data on The seventy fifth Nan(75難), The sixty ninth Nan(69難) of Classic of Difficulty Issues-Nan Jin 75, 69. OHAT establishes objectiveness and accuracy of diagnosis based upon the traditional method and procedure of pulse taking. In OHAT, a person`s state of illness is diagnosed by applying the comparative examination of the palpitation of the pulse. It is the fact that the pulse varies according to the state, and that OHAT treatment has proven the positive results by using the victor-vanquished relationship on The Nan Jin 75. On the basis of this, it is necessary to add the sixty ninth Nan(69難), to research the theory of the generation of the Five Element. Conclusions: Ohaeng-Hwa Acupuncture is very effective in treating the wide range of illness, and thus it has gained an increasing attention of many scholars and practitioners in the field of traditional Korean oriental medicine. However, it is the first theoretical attempt to the clinical research and scientific methodology of Ohaeng(Five) Ohaeng-Hwa Acupuncture, and more active Ohaeng-Hwa Acupuncture R&D is being conducted nationwide.
Effect of Highly Pressurized Hydrogen Gas Charging on the Hydrogen Embrittlement of API X70 Steel
Dong-Su Bae,Chi-Eun Sung1,Hyun-Ju Bang,Sang-Pill Lee,Jin-Kyung Lee,In-Soo Son,조영래,Un-Bong Baek,Seung-HoonNahm 대한금속·재료학회 2014 METALS AND MATERIALS International Vol.20 No.4
During the use of API X70 steel as a pipeline structural material for the transportation of natural gas,hydrogen embrittlement can occur due to the hydrogen contained in natural gas. The aim of this study is toinvestigate the effects of the hydrogen content under high-pressure hydrogen gas conditions on the hydrogenembrittlement of air-cooled API X70 steel. The air-cooled API X70 steel was manufactured by hot rollingand was then air-cooled to room temperature. Tensile test specimens were held for 0 h, 1000 h, and 2000 hwithin a pressure vessel filled with 100% hydrogen gas at a gas pressure of 10 MPa, with the tensile teststhen performed at room temperature. The microstructure of the API X70 steel consists of coarse polygonalferrite, coarse pearlite, and fine acicular ferrite. The yield and tensile strength increased and elongationdecreased considerably after a holding time of 2000 h compared to those of 0 h and 1000 h within the pressurevessel. The morphology of the fracture surface changed from ductile to brittle upon hydrogen gas charging. Secondary cracks were observed in both of the hydrogen-gas-charged specimens. No external cracks wereformed on the surface of the tensile-tested specimen with a 0 h holding time; however, many external crackswere observed on the specimen surface subjected to hydrogen gas charging.
무선 온라인 게임을 위한 부하 분산 도구 설계 및 구현
( Son-nyung ),엄남경 ( Nam-kyoung Um ),문형진 ( Hyung-jin Mun ),이상호 ( Sang-ho Lee ) 한국정보처리학회 2006 한국정보처리학회 학술대회논문집 Vol.13 No.2
네트워크상에서 모바일 게임에 접속하는 사용자들은 서버상에 발생하는 부하없이 끊임없는 실시간 게임을 하기를 원한다. 그러나 기존의 서버부하분산 방식은 게임 사용자의 특성을 고려하지 않아 효율적인 부하 분배 처리가 용이하지 않다. 따라서 본 논문은 해당 접속 요청을 부하분산 알고리즘에 의해 적절한 게임 서버에 배분하도록 하는 무선 온라인 게임서버의 부하 분산을 위한 QoS 기반의 부하 분산기를 설계하고 개발한다. 이를 통해 일정 기간의 부하 관련 정보를 관리자에게 제공하여 능동적인 게임 서버의 증설 등에 대응할 수 있다.
S-12 Comparison of natural course versus EUS-guided ethanol ablation for pancreatic cystic lesions
( Jin Ho Choi ),( Joo Seong Kim ),( Jin Woo Kang ),( Jae Woo Lee ),( Jun Hyuk Son ),( Dong-won Ahn ),( Sang Hyub Lee ),( Ji Kon Ryu ),( Yong-tae Kim ) 대한내과학회 2016 대한내과학회 추계학술대회 Vol.2016 No.1
Introduction: Endoscopic ultrasonography (EUS)-guided ethanol ablation for pancreatic cystic lesions (PCLs) is a recently introduced treatment option for PCLs but its effectiveness and role remains controversial. The aim of this study was to compare the clinical outcomes of EUS-guided ethanol ablation with those of the natural course of PCLs. Methods: We reviewed patients’ medical records retrospectively who had undergone EUS-guided ethanol ablation (N=118, EUS-guided ethanol ablation group) or followed-up without EUS-guided ethanol ablation (N=180, natural course group). The first group including patients underwent EUS-guided ethanol ablation from June 2006 to June 2015 for clinically diagnosed PCLs. The second group including patients without EUS-guided ethanol ablation was recruited from January 2004 to December 2008 and prospectively followed-up. The propensity score-matching analysis between the two groups was applied in order to minimize the effect of selection bias. The primary outcome was the rate of significant growth in size (> 10 mm). The secondary outcomes were the rate of significant reduction in size (<20% of initial size), complete remission rate, and surgical resection rate. Results: In a propensity-matched analysis of 36 pairs, the median initial cystic size was 22.0±12.5 mm and the median follow-up duration was 43.2 months. Significant growth in size was detected in 3 (8.3%) of the EUS-guided ethanol ablation group and 4 (12.5%) of the natural course group (p=0.691). Significant reduction in size was detected in 12 (37.5%) of the EUS-guided ethanol ablation group and 2 (6.25%) of the natural course group (p=0.003). Twelve (33.3%) patients who underwent EUS-guided ethanol ablation had achieved the complete remission. Two patients underwent surgical resection in the EUS-guided ethanol ablation group and 10 patients in the natural course group (p=0.011). Conclusions: It seems ineffective using EUS-guided ethanol ablation to inhibit significant cystic growth. The EUS-guided ethanol ablation is still a feasible and effective treatment because it could be expected to complete remission and to reduce the proportion underwent surgical resection.
Sang-Ho Lee,Chul-Ho Park,Jun-Tae Park,Sang-Guk Park,Jin-A Lee,Guk-Hyun Suh,Ki-Seok Oh,Chang-Ho Son 韓國受精卵移植學會 2013 한국동물생명공학회지 Vol.28 No.4
Cell-free fetal RNA has been highlighted as useful tools for the fetal sex determination or other genetic inherent disorder. However, there is no knowledge about the sex determination using cell free fetal RNA in bovine field. Thus, the present study aimed to evaluate the presence of transcripts of DDX3Y, USP9Y and ZRSR2Y genes in maternal plasma of pregnant cows to determine the sex of the fetus using real-time quantitative polymerase chain reaction assay, and verify its accuracy, sensitivity and specificity compared with the molecular testing and the calf sex at birth. Transcripts of USP9Y and DDX3Y genes were expressed in the all plasma of males and females both the control group and the experimental group. However, ZRSR2Y gene was matched up with the molecular testing and the true sex in control group and has an overall accuracy of 82.6%, a sensitivity of 75%, and a specificity of 100% in experimental group. Therefore, these results indicated that real time PCR technique, as a noninvasive and cost-efficient method, is possible to determination fetal sex in the bovine species using circulating cell free RNA in maternal plasma and especially ZRSR2Y gene could be a good candidate for the RNA based sex determination work.
Undifferentiated pleomorphic sarcoma: Non-skin origin malignancy that dermatologists can meet
( Jin-hwa Son ),( Woo-il Kim ),( Min-young Yang ),( Won-ku Lee ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Gun-wook Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ),( Hoon-soo Ki 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Undifferentiated pleomorphic sarcoma (UPS) is a rare moderately aggressive mesenchymal neoplasm capable of invading soft tissue, skeletal, and retroperitoneal structures. It most commonly occurs in extremities and relatively few cases have been reported arising in the skin. Dermatologists could meet non-skin origin malignancy as skin tumor on extremities. Here, we report as case of UPS presented with subcutaneous mass on the forearm. A 70-year-old man had a large hard subcutaneous mass on the left forearm presented 3 years ago. The protruding mass was insidious at onset and increased in size progressively. On examination, 7cm-sized mass with pain was noted and it was fixed to underlying structures. Histopathological examination showed tumor composed of highly pleomorphic spindle-shaped cells arranged in sheets and irregular fascicles with myxoid stroma. Immunohistochemical stain showed that some tumor cells were focal positive for smooth muscle actin, desmin, epithelial membrane antigen and pan cytokeratin. These findings were suggestive of UPS. Necrotic soft tissue mass with adjacent muscle invasion was revealed but no metastatic lesions were detected on several imaging tests (CT, MRI and PET-CT). Therefore, skin tumor of extremities could be considered the possibility of non-skin origin malignancy such as UPS. If it is suspected, dermatologists should be able to perform further evaluation and refer to other specialists.
A non-pigmented superficial basal cell carcinoma misdiagnosed as eczematous dermatitis
( Jin-hwa Son ),( Woo-il Kim ),( Min-young Yang ),( Won-ku Lee ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ),( Gun-wook Ki 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Superficial basal cell carcinoma (BCC) typically present as a well-circumscribed, erythematous patch or plaque involving the trunk and extremities. Additional findings include focal scale or crust, a thin rolled border, and variable amounts of melanin. Especially, superficial BCC without pigmentation might be difficulty in early detection even for experienced dermatologists. We report a case of superficial BCC misdiagnosed as chronic eczematous dermatitis. A solitary erythematous plaque with long durations should be considered as malignant skin tumor in the differential diagnosis. A 48-year-old woman presented with 38 X 43 mm erythematous oozy plaque without pigmentation on her left arm that she had recognized 5 years previously. A dermoscopic examination revealed multiple small erosions on a homogenous pink background. Interestingly, multiple scars were found on face, extremities and she remembered that her father had applied chemical material for treatment of previous unknown dermatitis. The erythematous plaque had previously been diagnosed as eczema on another hospital after histologic examination. However, there was no improvement in the lesion after steroid therapy and re-biopsy was performed. The histopathologic findings revealed multifocal nests of atypical basaloid epithelium arising as buds from the basal layer of the epidermis. The diagnosis was confirmed of superficial BCC. She has been treated with Photodynamic therapy.