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오시덕,권용호,김태국 중앙대학교 기술과학연구소 1994 기술과학연구소 논문집 Vol.24 No.-
In this study a computer program has been developed to analyze the thermal and hydraulic performance of waste heat recovery boilers. Using the program developed in this study, the thermal and hydraulic performance data of a 3T/hr boiler are obtained for 100%, 75%, 50% and 25% loads. The results include the expected steam capacity, the local gas/water temperatures, and gas side pressure drop etc. For 100% load, comparison of the current results with those obtained from existing boiler code show fairly good agreements.
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이원호,장지덕,최병인,강성룡,김성진,권기정 동아대학교 부설 기초과학연구소 2004 基礎科學硏究論文集 Vol.21 No.1
본 연구은 진해항 일대의 조류상을 조사ㆍ분석한 것이다. 조사는 2001년 12월부터 2002년 4월까지 28회를 조사하였다. 센서스 기간 중 총 61종의 조류를 조사 지역내에서 관찰할 수 있었으며, 연 55,115개체가 관찰되었다. 종수의 합계와 총 개체수 그리고 종별ㆍ개체별 출현 빈도에서 유도된 종 중요도는 불은부리갈매기[0.58], 괭이갈매기[0.14], 흰죽지[0.12], 고방오리[0.07], 민물도요[0.07], 참새[0.06], 재갈매기[0.06]가 중요한 종으로 나타났다. 월별 최대 관찰 개체수는 2001년 12월에 46종 5,993개체를 관찰하였으며, 2002년 1월에 37종 7,105개체, 2월에 37종 8,837개체, 3월에 38종 4,106개체, 그리고 4월에 32종 2,819개체를 관찰하였다. 종 풍부도는 4월에 가장 높게 나타났으며, 종 다양성과 균등도는 1월이 가장 높게 나타났다. 월별 종의 유ㆍ무와 개체수를 비교하여 양방향 유사도를 분석한 결과 2월과 3월의 조류 군집이 유사한(0.69: Pearson Correlation Index) 것으로 나타났고, 다음으로 1월(0.617), 12월(0.522)로 12, 1, 2, 3월이 하나의 cluster를 형성하고 있었으며, 4월이 틀린 cluster를 형성하고 있다. 수금류, 섭금류, 갈매기류, 참새류 등 4가지 중요 군집으로 구분하여 개체수를 비교한 결과 66%가 붉은부리갈매기 외 3종의 갈매기류였고, 21%가 혹부리오리 외 13종의 수금류, 7%가 붉은머리오목눈이 외 21종의 참새목, 5%가 흰물떼새 외 5종의 섭금류, 1%미만의 맹금류, 논병아리류, 가마우지류의 조류로 나타났다. We investigated the abundance and local distribution of birds, in four areas of the jinhae. Data were collected from four areas in the jinhae from 2001 to 2002. In this study, 55115 individual birds of 80 species were censused. We evaluated important species with abundance of birds were as follows: Black-headed Gull[0.58], Black-tailed Gull[0.14], Pochard[0.12], Pintail[0.07], Dunlin[0.07], Tree Sparrow[0.06], and Herring Gull[0.06]. The number of species and individuals in each month were recorded as follows: 5993 individual birds of 46 species in December(2001), 7105 individual birds of 37 species in January(2002), 8837 individual birds of 37 species in February, 4106 individual birds of 38 species in March, 2819 individual birds of 32 species in April. In study period, the april was the highset richness(R' =0.60) and the January was the highest diversity(H'=2.08) and evenness(E5=0.52) with an expected species number of E[S_(818)]=29. Pairwise similarity declined with increasing distance between recording month and recording month from two different clustered separately in a UPGMA cluster tree. Comparison of population variable at 4 sites of 4 classes was compared as follows: 1.Gull(66%), 2. Waterfowl(21%), 3. Passerine(7%), and 4. Wader(5%).
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CD26/DPP4 Levels in Peripheral Blood and T Cells in Patients With Type 2 Diabetes Mellitus
Lee, Sang Ah,Kim, Young Ree,Yang, Eun Jin,Kwon, Eun-Jeong,Kim, Sun Hyung,Kang, Sung Ha,Park, Doek Bae,Oh, Byung-Chul,Kim, Jinseok,Heo, Sang Taek,Koh, Gwanpyo,Lee, Dae Ho The Endocrine Society 2013 The Journal of clinical endocrinology & metabolism Vol.98 No.6
<P><B>Context:</B></P><P>Dipeptidyl peptidase 4 (CD26/DPP4) is expressed on blood T cells and also circulates in a soluble form (sCD26/DPP4).</P><P><B>Objective:</B></P><P>We aimed to evaluate blood T cell and circulating CD26/DPP4 and its association with metabolic parameters in patients with type 2 diabetes mellitus (T2DM).</P><P><B>Designs:</B></P><P>We measured CD26/DPP4 expression (percentage of CD26<SUP>+</SUP> cells using flow cytometry) on CD4<SUP>+</SUP> and CD8<SUP>+</SUP> T cells, serum CD26/DPP4 level and activity, and various metabolic parameters in T2DM patients not on DPP4 inhibitor therapy (n = 148). Nondiabetic subjects (n = 50) were included as a control group.</P><P><B>Results:</B></P><P>Compared with the healthy controls, CD26/DPP4 expression on CD4<SUP>+</SUP> T cells and CD8<SUP>+</SUP> T cells was higher in T2DM patients. Serum CD26/DPP4 levels and enzymatic activities were also higher in patients with T2DM than in the control group only when metformin and/or thiazolidinedione-treated T2DM patients were excluded; metformin and/or thiazolidinedione-treated T2DM patients had lower values compared with other T2DM patients. Various parameters in T2DM patients were related to CD26/DPP4 expression on the T cells (hemoglobin A1c), serum sCD26/DPP4 (hemoglobin A1c and insulin resistance assessed by updated homeostasis model assessment), and serum CD26/DPP4 activity (insulin resistance assessed by updated homeostasis model assessment, γ-glutamyl transferase, and alanine aminotransferase) by multivariate analyses. After active glucose control for 12 weeks in drug-naive T2DM patients (n = 50), CD26/DPP4 expression on blood T cells was significantly decreased.</P><P><B>Conclusions:</B></P><P>Our results suggest that the CD26/DPP4 level on blood T cells was associated with glucose control status in patients with T2DM.</P>
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박은준,안율균,권덕호,양은영,Eun Joon Park,Yul Kyun Ahn,Doek Ho Kwon,Eun Young Yang Korea National University of Agriculture and Fishe 2024 현장농업연구지 = Journal of practical agricultural resear Vol.25 No.4
Haploid/double haploid plants developed from isolated microspores can significantly accelerate plant breeding. Haploid plants can naturally double their chromosomes to create a pure homozygous line of diploid plants. We present a method for producing embryos from isolated microspores of hot peppers (Capsicum annuumL.). We analyzed the polyploidization levels of the regenerated plants. The donor plants produced the optimal stage of microspores following short-term growth under low-intensity light, which resulted in high rates of embryogenesis and cotyledonary embryogenesis. To find an efficient culture method, liquid, doubled-layer, and 2-step cultures were tested. Liquid culture yielded the highest number of embryos, whereas the highest efficiency for cotyledonary embryogenesis was afforded by the doubled-layer culture. When normal cotyledonary embryos were transplanted onto a regeneration medium, they developed into complete plants. From these, 208 plants were tested via flow cytometric analysis, and 35.6% and 72.7% of the chromosomes from the Milyang-jare and LV2319 genotypes, respectively, were found to be spontaneous double haploids. These results are the same as those obtained on analyzing horticultural characteristics, including the size of leaves and the size and shape of fruits. The present study provides information on the practical application of isolated microspore culture of hot peppers, factors that affect embryogenesis, and methods for polyploidy testing.
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