石灰石 添加에 따른 二酸化黃 除去率 向上

김영수,박진식,장성호,장부규,서정민,김장호 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.2

This study was carried out to investigate the performance enhancement of forced oxidation operation on the limestone utilization and SO₂ removal efficiency of the pilot flue gas desulfurization system. The results are as follows : 1. The results of the forced oxidation tests have shown that converting from natural to forced oxidation operation can have a significant effect on both limestone utilization and SO₂ removal efficiency of an FGD system. Conversely, if the limestone utilization is maintained at a constant level, the SO₂ removal efficiency will increase. Conversely, if the pH is held constant, the limestone utilization will increase significantly. 2. This characteristic of a forced oxidation system can translate into lower L/G requirements and, therefore, reduced capital and operating costs for slurry recycle pumps. 3. Forced oxidation operation will provide improved limestone utilization and, therefore. reduced limestone reagent costs.

응급센터내에서의 Do-Not-Resuscitate Order

김영식,황성오,이부수,안무업,임경수,강성준 대한응급의학회 1993 대한응급의학회지 Vol.4 No.2

Do-not-resuscitate(DNR) decision in certain patients is a important part of patient management. The use of DNR order has been widely recognized in hospitalized patients, but there has been little discussion of the use of DNR order in emergency department. DNR decision in emergency department is difficult because there is no previous contact between physician and patient. To identify the medical reasons of the DNR decision and the process of the DNR in the emergency department, 293 DNR patients in emergency department during 1 year and 36 physicians having experienced DNR decision were studied. Reasons for DNR are irreversible states from brain damage or acute illness(63%), chronic irreversible illness(15%), prolonged cardiac arrest over 30 minutes(16%), physical injuries including decapitation(1%) and family's hope(5%). Almost DNR(72%) were decided by physicians. 72% of DNR decision were not documented. Cardiopulmonary resuscitation was attempted before DNR decision in 38% of the patients and 17% of CPR attempts were unnecessary. Almost physician(88%) replied that physician should discuss resuscitation with family and process of DNR decision should be documented.

소나무 秀型木 風媒次代의 遺傳力과 改良效果 推定

金奎植,柳根玉,韓永昌,朴在仁 충북대학교 농업과학기술연구소 2000 農業科學硏究 Vol.17 No.-

To maximize genetic gains and to establish an effective and long term breeding strategy for Pinus densiflora through estimation of genetic parameters, such as heritability and expected genetic gains, a progeny test was carried out. The open-pollinated seeds were collected from 49 selected plus trees of Pinus densiflora S. et Z. in the fall of 1984 and outplanted at four localities, Kongju, Wanju, Naju and Kyoungju. Measurements were taken at the 8-year old seedling stage and the obtained results from this test were summarized as follows; Significant differences among families were observed in both height and diameter at root collar. Individual heritability estimated for height and diameter at root collar was 0.126 and 0.082, respectively while family heritability estimated 0.531 and 0.473. Considering 20% of selection intensity with combined selection method, the improved genetic gains for each characters were estimated as 9.5% for height growth and 8.3 percents for diameter at root collar.

Pseudomonas sp. TPP 63을 이용한 PVA 폐수의 생물학적처리에 관한 연구

김영식,조상원,오광중,임주원 부산대학교 환경문제연구소 1994 環境硏究報 Vol.12 No.-

The purpose of this study is increasing the microbiological treatment efficiency of PVA wastewater using selected bacteria. The bacteria which showed high decomposition rate of PVA was separated as TPP 63 bacteria decomposing PVA of 91.3% when the bacteria have cultured at 0.5% PVA minimum culture medium for 5 days. This bacteria was identified as Pseudomonas putida. It showed a maximum decomposition rate of PVA at culture temperature of 37℃ and pH 7.5-7.8. In case 0.2% PVA wastewater was treated with this culture of 3500 mg/L MLSS, the efficiency was improved with increasing HRT. At HRT of 5 days and 0.4% PVA concentration, the treatment efficiency was dropped down more seriously when the culture medium was not supplied.

CoNbZr/Cu/CoNbZr 다층박막의 습식 식각 거동에 관한 연구

윤재홍,김현식,송재성,이영생,민복기 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-

We manufactured CNZ/Cu/CNZ multi-layers by sputtering methode and formed pattern on the deposited multi-layers. In this study, we fabricated new etchant for the etching to formed pattern by the wet chemical etchant. it was searching for the best condition of etchant. Cu was etched selectively independence in the concentration of basic solution but amorphous CNZ thin film did not. The etchant was achieved by basic solution(17.5 mol%) and HF(20mol%) mixing, which etched CNZ/Cu/CNZ multi-layers in the same. Also, the etchant etched CNZ/Cu/CNZ multi-layers by the three-step. It was shown that the etched cross-section have isotropic structure and excellent etching characteristics.

Butt 용접재의 피로균열성장거동 및 ΔK_th 결정에 관한 연구(Ⅰ) : 피로균열성장거동 Fatigue Crack Propagation Behaviour

최용식,김영진,우흥식 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.2

Threshold stress intensity factor range (ΔK_th) and fatigue crack growth behaviour were investigated for transverse submerged butt-welded joints of SM 50A steel with compact-tension type specimens. It was found in every case that welding induced stresses in center portion of specimen and compressive residual stresses near the edges. The fatigue crack grew in the field of compressive residual stresses. Additional effect of postweld heat treatment was examined. As a result, the fatigue crack growth rates of the weld metal and the HAZ metal in the state as weld were slower than those of the base metal. The ΔK_th value of the weld metal is smaller than those of both the base metal and the HAZ metal in the state of as weld. And the ΔK_th value of the HAZ metal is the largest among those of them. In the state of PWHT, the fatigue crack growth rates of the weld, HAZ metal were similar to those of the base metal and the threshold stress intensity factor range (ΔK_th) of the weld metal is similar to the value of the base metal.

CFRP 복합적층판의 적층배향·계면수에 따른 저속충격특성

임광희,박노식,나승우,김영남,이현,심재기,양인영 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.6

In this paper, this study aims at the evaluation on the characteristics of CFRP laminate plates using a falling weight impact tester. The experiment was conducted on several laminates of different orientation. A system was built for measuring the impact strength of CFRP laminates in consideration of stress wave propagation theory using a falling weight impact tester. Delamination areas of impacted specimens for the different ply orientation were measured with ultrasonic C-scanner to find correlation between impact energy and delamination area. Absorbed energy of quasi-isotropic specimen having four interfaces was higher than that of orthotropic laminates with two interfaces. The more interfaces, the greater the energy absorbed. The absorbed energy of a hybrid specimen containing a GFRP layer was higher than that of normal specimens.

Expression profile and reproductive regulation of APGWamide in Pacific abalone (<i>Haliotis discus hannai</i>)

Kim, Kyeong Seop,Kim, Tae Ha,Kim, Mi Ae,Lee, Jung Sick,Sohn, Young Chang Elsevier 2018 Comparative biochemistry and physiology. Part A, M Vol.222 No.-

<P><B>Abstract</B></P> <P>Neuropeptides in the central nervous system regulate reproductive activities in vertebrates. Ala-Pro-Gly-Trp-NH<SUB>2</SUB> (APGWamide), a neuromediator expressed in the neural ganglia of mollusks, controls sexual maturation and reproduction. To clarify the role of APGWamide in sexual behavior regulation and gamete cell maturation in mollusks, we cloned the cDNA of APGWamide precursor (<B> <I>Hdh</I> </B>-<B> <I>APGWamide</I> </B>) and examined the spatiotemporal expression of the transcript in the Pacific abalone <I>Haliotis discus hannai</I>. The 222-amino acid sequence of the precursor deduced from the cDNA sequence showed typical features of gastropod APGWamide precursors. Phylogenetic analysis revealed that Hdh-APGWamide is classified with other gastropod APGWamide precursors, which form a separate branch from those of the bivalves. <I>Hdh</I>-<I>APGWamide</I> mRNA was highly expressed in the neural ganglia in both sexes. In females, the three ganglia (pleuro-pedal ganglion, PPG; branchial ganglion, and cerebral ganglion) showed similar expression in immature and mature animals, whereas in males, the level in the PPG only was higher at maturity (P < 0.05). In vivo injection of APGWamide or 5-hydroxytryptamine (10<SUP>−3</SUP> M) increased the frequency of spawning and the number of released sperm cells by mature males (P < 0.05), while concentrations above 10<SUP>−7</SUP> M enhanced germinal vesicle breakdown in fully developed cultured oocytes (P < 0.05). Thus, the phylogenetic branch of the APGWamide precursor gene in Haliotidae was separate from the other branches under the phylum Mollusca, and this gene exhibited ganglion-specific expression, indicating that it may induce final maturation and spawning in both sexes of <I>Haliotis</I> spp.</P>

都市街路의 美化技法에 關한 硏究 : 步行者 街路의 Community 空間計劃 -Ⅰ Centering of plan in Community space for Pedestrians(Ⅰ)

김수인,이청웅,장정수,양영성,박강철,조용준,김정섭,김의식,임만택,홍병희,나승문,김민송 조선대학교 국토개발연구소 1983 국토개발연구 Vol.5 No.1

The importance of this study is to make planning of sidewalk built for recovering humanity in urban space system, For this purpose we intend to establish the origin and the vocabularies of the side walk, and to make physical elements as a tool for living space which is needed for user in modern informative society to be motorized. Consequently, the plan of the side walk space was selected for that of urban pedestrians as shopping street. since that plan should be combined with each other by introducing the new theory of the environmental designs. So, this plan is aimed to make combination each other and to be operated as self-preparation of civil composition.

Characterization and spatiotemporal expression of gonadotropin-releasing hormone in the Pacific abalone, <i>Haliotis discus hannai</i>

Kim, Tae Ha,Kim, Mi Ae,Kim, Kyeong Seop,Kim, Jae Won,Lim, Han Kyu,Lee, Jung Sick,Sohn, Young Chang Elsevier 2017 Comparative biochemistry and physiology. Part A, M Vol.209 No.-

<P><B>Abstract</B></P> <P>Gonadotropin-releasing hormone (GnRH) is a key neuropeptide regulating reproduction in humans and other vertebrates. Recently, GnRH-like cDNAs and peptides were reported in marine mollusks, implying that GnRH-mediated reproduction is an ancient neuroendocrine system that arose prior to the divergence of protostomes and deuterostomes. Here, we evaluated the reproductive control system mediated by GnRH in the Pacific abalone <I>Haliotis discus hannai</I>. We cloned a prepro-GnRH cDNA (<I>Hdh-GnRH</I>) from the pleural-pedal ganglion (PPG) in <I>H. discus hannai</I>, and analyzed its spatiotemporal gene expression pattern. The open reading frame of <I>Hdh-GnRH</I> encodes a protein of 101 amino acids, consisting of a signal peptide, a GnRH dodecapeptide, a cleavage site, and a GnRH-associated peptide. This structure and sequence are highly similar to GnRH-like peptides reported for mollusks and other invertebrates. Quantitative polymerase chain reaction demonstrated that <I>Hdh-GnRH</I> mRNA was more strongly expressed in the ganglions (PPG and cerebral ganglion [CG]) than in other tissues (gonads, gills, intestine, hemocytes, muscle, and mantle) in both sexes. In females, the expression levels of <I>Hdh-GnRH</I> mRNA in the PPG and branchial ganglion (BG) were significantly higher at the ripe and partial spent stages than at the early and late active stages. In males, <I>Hdh-GnRH</I> mRNA levels in the BG showed a significant increase in the partial spent stage. Unexpectedly, <I>Hdh-GnRH</I> levels in the CG were not significantly different among the examined stages in both sexes. These results suggest that <I>Hdh-GnRH</I> mRNA expression profiles in the BG and possibly the PPG are tightly correlated with abalone reproductive activities.</P>