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허용훈,이기식 釜慶大學校 1997 釜慶大學校 論文集 Vol.2 No.1
The information age is difficult to make a long-term planning and needs to be changed by certain circumstances and systematization. Now it no longer exists such as patterned problems like in the past, and under the condition of uncertainty, pertinent planning change will be requested. From this point of view, the Information Infrastructure Policy as a national project sometimes needs to be readjusted as its requirement. This research is about policy evaluation of the Information Infrastructure Policy that is expected as a role of national infrastructure and will be expended large budget on the national project. There are four variables to analyze the policy : planning actors, strategy, acceptability and time relevancy. According to a result of study, four points of policy implication are derived from. First, the Information Infrastructure Policy needs attention. Second, it has to be politically reexamined. Third, it is required that it should rectify because it is generally inefficient about strategy, acceptability and time relevancy. Finally, it requests a new or reform policy for demand development for the Information Infrastructure Policy. We have always concerned about only network establishment but never about the network's demand development and incentive system development for its use. Ultimately, the Information Infrastructure Policy needs to be readjusted rationally in Korea.
산삼 배양액 급여가 돈육의 이화학적 특성에 미치는 영향
진상근,김일석,송영민,허선진,박기훈,정기종,김동훈,노정만 진주산업대학교 산업과학기술연구소 2006 산업과학기술연구소보 Vol.- No.13
Berkshire를 이용하여 70일간 산삼 배양액 급여 시 육의 이화학적 특성에 미치는 영향은 다음과 같다. 산삼 배양액의 급여에 의해 육의 수분, 조단백, 조지방, 회분, pH, 가열감량, 콜레스테롤 함량, 육색, 조직감의 응집성과 검성, 포화지방산 및 불포화지방산의 비율은 차이를 보이지 않았다. 보수력, 지방색 L^(*)값, 지방산 중 linoleic acid(18:2), arachidonic acid(20:4), 필수지방산의 함량, 아미노산 중 threonine, glutamic acid, valine, isoleucine, leucine, histidine, lysine 및 총아미노산 함량은 산삼 배양액의 급여에 의해 감소하였다. 전단가, 조직감의 표면경도, 경도, 씹힘성, 지방산 중 stearic acid(18:0), oleic acid(18:1) 함량, 아미노산 중 serine, glycine, cystine, methionine, tyrosine 및 phenylalanine의 함량은 산삼 배양액의 급여에 의해 증가하였다. 본 연구결과를 종합하면 산삼 배양액의 급여는 돈육의 경도를 증가시키는 효과 외에 뚜렷한 이화학적인 차이를 나타내지 않았다. 이러한 이유는 급여된 산삼 배양액 내에 함유된 생리활성 물질의 함량이 낮고, 급여수준이 낮은 결과로 사료되어진다. A total of 60 pigs (Berkshire) were used to investigate the effect of dietary artificial culture medium of wild ginsengs (CMG) on physico-chemical characteristics of pork. About 60 kg pigs were randomly alloted into one of two experimental diet groups (C:commercial diet feed; T:commercial diet + 1 L CMG per day for 70days). Pigs were slaughtered at approximately 110 kg live weight, and chemical composition and physico-chemical characteristics were measured in pork loin. Moisture, crude protein, crude fat and ash were not significantly different by dietary artificial culture medium of wild ginsengs. Water-holding capacity was decreased by dietary artificial culture medium of wild ginsengs, while shear force was increased. However, pH, cooking loss and cholesterol contents were not significantly different between two different treatments. In color, L^(*) of fat was decreased by dietary artificial culture medium of wild ginsengs. Brittleness, hardness and chewiness were increased in dietary artificial culture medium of wild ginsengs group. In fatty acid, stearic acid (18:0) and oleic acid (18:1) were higher in dietary artificial culture medium of wild ginsengs group, whereas linoleic acid (18:2) and arachidonic acid (20:4) were higher in control group. In amino acid, serine, glycine, cystine, methionine, tyrosine and phenylalanine were higher in dietary artificial culture medium of wild ginsengs group, whereas threonine, glutamic acid, valine, isoleucine, leucine, histidine and lysine were higher in control group.
허기훈(Ki-Hoon Hur),변우식(Woosik Byon) 한국전산유체공학회 2000 한국전산유체공학회 학술대회논문집 Vol.2000 No.10
Parametric studies are performed of the factors influencing the afterbody drag. To display the effect of differing afterbody shapes, several ogive boattails with combinations of the base area and the angle of boattail end are computed using axisymmetric Navier-Stokes equations with central differencing and a DADI scheme. And Chien's k-e model is employed used for computations of turbulent flows around the base region. The effects of base area, hoattail angle and jet on/off are illustrated on afterbody drag at transonic speed.
전신홍반루푸스에 동반된 항인지질항체 증후군 환자에서 괴저농피증 양상으로 발현된 족부 궤양
허기훈 ( Ki Hoon Hur ),곽승기 ( Seung Ki Kwok ),박윤정 ( Yoon Jung Park ),최진정 ( Jin Jung Choi ),조철수 ( Chul Soo Cho ) 대한류마티스학회 2008 대한류마티스학회지 Vol.15 No.2
Antiphospholipid syndrome (APS) is characterized by vascular thrombosis in association with elevated titers of antiphospholipid antibodies. Leg ulcers are a considered to be a cutaneous manifestation of APS due to thrombosis of small to medium sized vessels. We report a case of necrotic non-healing, ankle ulcers mimicking pyoderma gangrenosum associated with APS in 50-year-old man. He had a past history of autoimmune thrombocytopenia and cerebral infarction. Laboratory findings showed a circulating lupus anticoagulant, positive anticardiolipin antibodies as well as anti-dsDNA and anti-Sm antibodies. Skin biopsy of ulcer lesions showed thrombotic vasculopathy of medium sized vessels with minimal leukocyte infiltration. Ulcers were successfully treated with surgical debridement and subsequent skin graft along with anticoagulation therapy.
( Ki Hoon Ahn ),( So Eun Jung ),( Kyong Wook Yi ),( Hyun Tae Park ),( Jung Ho Shin ),( Young Tae Kim ),( Jun Young Hur ),( Sun Haeng Kim ),( Tak Kim ) 대한폐경학회 2011 대한폐경학회지 Vol.17 No.2
연구목적: 바륨이 인간 중간엽 줄기세포의 골모세포분화에 있어 유전자발현에 미치는 영향을 알아보고자 하였다. 연구재료 및 방법: 인간골수줄기세포를 골분화배지에서 배양하면서 바륨과 스트론튬을 0.1 mM, 0.3 mM, 1 mM 의 농도로 첨가하였다. 골모세포의 분화정도를 측정하기 위하여 Alkaline phosphatase 활성정도를 측정하였다. 총 RNA 를 분화 1, 3, 7, 14일 후에 추출하여 Runx2/Cbfa1, BMP-2, BSP 유전자 발현을 real-time RT-PCR로 분석하였다. 결과: 바륨과 스트론튬은 인간 골수 중간엽줄기세포의 증식을 증가시키는 효과를 보여주었다. 바륨은 스트론튬과 마찬가지로 Runx2/Cbfa1, BMP-2, BSP 유전자 발현을 증가시켰다. 결론: 바륨은 인간 중간엽 줄기세포의 골모세포 분화를 증가시키는 작용이 있음을 확인할 수 있었다. 스트론튬과 마찬가지로 바륨 역시 골형성에 있어 중요한 인자 중 하나인 것으로 보인다. Objectives: The purpose of this study was to determine the effect of barium on gene expression in differentiation of human mesenchymal stem cells into osteoblasts in vitro. Methods: Human bone marrow stem cells were cultured for 0~14 days in osteogenic differentiation medium with strontium chloride (SrCl2) and barium chloride (BaCl2). Alkaline phosphatase (ALP) activity staining was the method selected for measuring osteoblast differentiation. Total ribonucleic acid (RNA) was extracted after 1, 3, 7, and 14 days, and analysis of runt-related transcription factor 2/core-binding factor alpha 1 (Runx2/Cbfa1), bone morphogenetic protein-2 (BMP-2), and bone sialoprotein (BSP) gene expression was performed by real-time reverse transcriptase (RT)-polymerase chain reaction (PCR). Results: Barium and strontium had a superior enhancing effect on cell proliferation when compared to cells cultured in media without strontium or barium. BaCl2 produced a 2-fold increase in the expression of Runx2/Cbfa1 at 14 days. SrCl2 (0.1~0.3 mM) produced a 2-fold increase in the expression of Runx2/Cbfa1 at 14 days. Barium produced a 1.5-fold increase in the expression of BMP-2 on days 1 or 3. Expression of BSP was increased 1.5~1.7- and 2-fold on days 1 and 14 by barium and strontium, respectively. Conclusion: Barium-like strontium is considered one of the important factors in inducing mesenchymal stem cells to differentiate into osteoblasts with further enhancement on bone formation. (J Korean Soc Menopause 2011;17:81-87)
( Ki Pyo Kim ),( Joon Young Hur ),( Ji Young Choi ),( Ran Song ),( Sang Wan Chung ),( Yeon Ah Lee ),( Seung Jae Hong ),( Hyung In Yang ),( Sang Hoon Lee ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Some patients with severely advanced ankylosing spondylitis (AS) need to replace or correct destructed joints by surgical treatment. Among these patients, some patients who don’trespond sufficiently to conventional NSAIDs have to be treated by anti-TNF alpha blockades. We reviewed these patients to assess postoperative infection rate after surgery with prosthesis. Methods: We retrospectively reviewed the medical records of the patients with AS who experienced the surgery with prosthesis in Kyung Hee university hospital at Gangdong in Seoul, South Korea from Mar 2006 to May 2014. Results: Total 307 patients underwent the surgeries such as total hip replacement (THR) or corrective osteotomy of spine. Among them, 25 patients have been treated by TNF alpha blockades after surgery. 9 patients had been treated by TNF alpha blockade before the surgery. Total follow-up period was 4.3±2.3 years per person. Their average ages for surgeries are 35.6± 10.7 years. Among them, 13 patients had THR and the others had corrective osteotomy in spine. 11 patients have been treated by adalimumab, 9 patients have been treated by etanercept and 5 patients have been treated by in. iximab. There was no wound complication associated with infection after the surgery during follow-up period in the group of patients treated by TNF alpha blockade. But in the group of patients who had been treated by conventional NSAIDs, one patient had wound infection after spine surgery. His age was 62 and he had uncontrolled DM. Conclusions: There is no increased risk of infection after the surgeries using prosthesis in patients with AS treated by TNF alpha blockade compared to the patients treated by conventional NSAIDs.