벼 立毛中 보리 散播栽培時 적정 立毛數 설정 및 둑새풀 발생의 영향

朱廷一,李喜鳳,申哲雨 충남대학교 농업과학연구소 1999 농업과학연구 Vol.26 No.1

벼 立毛中 보리 산파재배법은 파종노력 절감, 적기파종 및 포장조건 불량시 대체파종 등의 장점이 있지만 관행에 비하여 수량성이 낮고 연차간 變異가 큰 특징이 있다. 수량성을 향상시키기 위하여 栽培安定性을 높이는 관리기술이 요구되는데 우선 입모 확보와 둑새풀 방제체제 확립이 절실히 요구된다. 따라서 立毛率 향상시킬수 있는 요인, 다수확을 위한 적정 입모수 설정 및 둑새풀에 의한 감수정도 등을 구명코자 대전에서 올보리를 공시하여 벼 수확 1일전에 파종하고 이에 대한 결과는 다음과 같다 . 1. 볏짚피복과 진압에 의하여 출현율이 향상되었는데 볏짚피복효과가 진압효과에 비하여 높았고 추가진압으로 11% 증수 효과를 기대할 수 있었다. 2. 단위 면적당 적정보리 立毛數는 507개/㎡로 측정되었다. 3. 둑새풀 발생이 많을수록 수량이 감소되었는데 ㎡당 17~22본 발생시 21.8%, 6~11본 발생시 11.0%가 각각 감수되었다. This experiment was carried out to estimate the appropriate seedling stand and to find out the factors of good establishment and the reason of the reduction of yield by water foxtail. The seedling stands was improved by the ice straw mulching and treading by the tracks of combine. The effect of mulching was higher than the treading. The appropriate seedling stands for example yield were estimated about 507 plants per ㎡ and its yield was 24㎏/10a. The higher density of water foxtail, the less the grain yield; 21.8% by 17 to 22 water foxtail stands per ㎡ and 11.0% by 6 to 11 plants.

후두 미세수술 후 발생한 일시적인 설인신경 및 설하신경 장애 1예

정철우,주영민,박성철,최정섭 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.11

생쥐 위장관의 Interstitial cells of Cajal(ICC)에 대한 면역조직화학적 연구

김영철,차경훈,신무경,임건한,김주영,안병수,김장만,양경철,박도영,오재욱,장인엽 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1

Background and Objectives : Interstitial cells of Cajal(ICC) are the pacemakers in gastrointestinal tract that modulates gastrointestinal motiliey and these cells also transmit neural input from enteric nerves to smooth muscles. Recent work on tissues from patients with motility disorders that suggest that loss or defect in ICC could be related to pathophysiology in human and animal models. Immunolabelling of ICC in intestinal wall is recently developed by using specific marker, anti-c-kit antibody. Immunohistochemistry was done for ICC network in attempt to provide a morphological basis for the mechanism regulating gastrointestinal motility Methods : Cryosection was done, and whole-mount preparations of mouse stomach, gastrointestinal tract were immunolabelled using the anti-c-Kit. Immunolabelled ICC networks were observed under a confocal laser scanning microscopy. Results : According to three dimensional reconstruction study, we found that the c-Kit-positive celluar networks were widely distributed in the gastrointestinal muscle (1) circular muscle layer(IC-IM), (2) myenteric plexus(IC-MY), (3) deep muscular plexus(IC-DMP) in ileum, (4) submucosal plexus(IC-SMP) and longitudinal muscle layer(IC-LM) in colon. Conclusion : The characteristic profiles of ICC celluar networks provide a morphological basis upon the mechanism regulating gastrointestinal motility. Additional studies for the enteric nerves-ICC interaction are need to evaluate the detailed roles of Icc in gastrointestinal tract.

회분식 반응기에서의 공정변수 변화에 의한 침강성 탄산칼슘 제조

신보철,한상오,김주호,송지훈,송근호,이광래 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

For the preparation of calcium carbonate particles from aqueous Ca(OH)2 slurry, carbonation reaction of aqueous Ca(OH)2 slurry was carried out by batch method the CO2 into reactor filled with aqueous slurry of Ca(OH)2. The concentration of Ca(OH)2 varies from 1.00 to 7.00wt%, reactor temperature at 20 and 40℃, and reactor pressure from atmospheric pressure to 6.0kgf/cm2. Crystal structure of calcium carbonate was of calcite, the particle size were about 0.05 ∼2.0㎛, and the particle shape was cubic and spindle. When reactor temperature was higher, particle size of calcium carbonate was bigger and particle share was varied, but reaction rate was increased. When reactor pressure was higher, particle size of calcium carbonate was smaller, particle shape was cubic, and reaction ramie was increased.

졸겔법에 의한 티탄산납 제조 및 유기산 흡착특성

김주호,송지훈,신보철,한상오,송근호,이광래 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

Generally PbTiO3 if manufactured in a form of thin films which is useful for the application infrared sensors and non-volatile memory devices. Moreover PbTiO3 has a characteristic of adsorption for organic acid as well as electronic property. Organic acid adsorption properties of PbTiO3 powder prepared by sol-gel method was compared with the powder purchased from Aldrich Co. Crystallization and particle size of PbTiO3 are influenced by process variable, such as dilution of sol solution, catalysis, calcination temperature, calcination time, etc. As the size of PbTiO3 power decreased until several nanometers, adsorption of acetic acid and formic acid was increased 1.5-fold and 1.2-fold respectively

자연순환 온수 난방장치에서 열부하에 미치는 코일관 보일러의 형상인자들에 대한 연구

김철주,송기환 成均館大學校 科學技術硏究所 1992 論文集 Vol.42 No.2

So called "Saemaul-Boiler"is a domestic heating system composing a closed loop of tube, through which is circulating a hot water mobilized by natural convection effect in boiler. This heating system was simplified to a single phase closed thermo-loop, having an element of helically coiled tube heated externally by electric resistance wire. The investigation was put on some parameters of coil tube such as helix angle, curvature ratio and tube diameter in order to understand their effects on mass flow rate of working fluid in the loop system. From the results of the experiment it was shown that : 1) The heilx angle and diameter of coil tube might have a considerable importance on improuvement of thermal load by increasing mass flux of working fluid. 2) But the curvature ratio had relatively negligible effect.

사설경호업체 종사자의 직무스트레스와 직무만족과의 관계

이상철,함주일,안길영 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

The purpose of this study was to identify the relationship between job stress and job satisfaction of employees in private body-guard company. In order to achieve this purpose, the instrument for data collection was a questionnaire in which consisted of questions regarding job stress and job satisfaction. The questionnaire's validity was evaluated by a panel of experts, and its reliability was evaluated by computing the Cronbach alpha values. Since the values ranged from .664 to .816, the questionnaire was deemed to be highly reliable. 220 subjects was selected from several private body-guard companies in Seoul, 2003. Among these selected subjects, 200(90%) responded, and data analyses consisted of employing descriptive statistics, one-way ANOVA, standard multiple regression using SPSS/PC version 10.0. The following results were obtained: First, job stress factors differ statistically and partially according to socio-demographic variables of employees in private body-guard company. Second, job satisfaction factors differ statistically and partially according to socio-demographic variables of employees in private body-guard company. Third, job stress statistically and significantly influenced job satisfaction.

금원산지역의 관속 식물상

석주환,김우룡,추갑철 진주산업대학교 농업기술연구소 2003 農業技術硏究所報 Vol.16 No.-

우리나라의 주요활엽수의 분포대인 금원산 지역의 관속식물을 조사하고 자연생태계 및 자원 보존에 필요한 기초자료를 얻기 위하여 2001년 5월부터 8월까지 4회에 걸쳐 조사한 결과 는 다음과 같다. 금원산지역에 생육하고 있는 식물은 총 620종류로 108과 357속 534종 80변종 6품종이었다. 이중 초본식물은 62과 254속 427종류이고, 목본식물은 52과 103속 166종 21변종 6품종으로 비교적 많은 종이 생육하고 있다. 식물상을 조사한 결과 한국 특산식물은 13과 14종(히어리, 호랑버들, 버드나무 병꽃나무, 짝자래나무, 딱총나무, 매화말발도리, 노각나무, 개비자나무, 할미꽃, 복분자, 강활, 오동나무, 벌개미취)이었다. 군락 또는 소군락을 이루고 있는 수종은 상수리, 졸참나무, 신갈나무, 정금나무, 느릅나무, 개비자나무 등이었다. 토양의 pH는 어느 곳에서나 약 4.98로 비슷하게 나타났다. The vascular plants in the region of Keumwonsan was consisted of 620 kinds; 108 families, 357 genus, 534 species, 80 varieties, 6 forms. The herbs of 427 species, 254 genus, 62 families and woody plants of 6 forms, 21 varieties, 166 species, 103 genus, 52 families were founds. The endemic vascular plants to Korea of Keumwonsan were 14 species. There are Corylopsis coreana, Salix hulteni, S. koreensis, Weigela subsessilis, Rhamnus yoshinoi, Sambucus williamsii var. coreana, Deutzia coreana, Stewartia koreana, Cephalotaxus koreana, Pulsatilla koreana, Rubus coreanus, Ostericum koreanum, Paulownia coreana and Aster koraiensis. Soil pH of investigated area was 4.98.

QLF를 이용한 항우식 제품의 인공우식 재광화 효과에 대한 연구

송주현,김영재,김정욱,장기택,김종철,한세현,이상훈 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2

본 연구는 항우식 제품인 저농도의 불소 양치액(500 ppm NaF)과 Casein phosphopeptide-amorphous calcium phosphate(CPP-ACP)를 포함하는 치아 연고,그리고 이 두 제품을 같이 사용했을 경우,인공 우식 병소의 재광화 효과를 알아보고자 하였다. 제3대구치 협면에 인공우식을 유발하였고,시편을 16개씩 4군으로 나누어,28일 동안 매일 2회 다음과 같은 항우식 제품을 시편에 처리하였고,pH 순환 시스템을 적용하였다. 1군: 대조군(무처치) 2군: Tooth Mousse^(ⓡ) (GC Co. Japan) 3군: 치카치카^(ⓡ)(삼일제약. 한국) 4군: 치카치카^(ⓡ)+ Tooth Mousse^(ⓡ) 무기질 소실량(ΔQ)의 장기적인 변화를 Quantitative light-induced fluorescence (QLF)를 이용하여 관찰하여 다음과 같은결과를 얻었다. 1. ΔQ는 1군에서는 28일동안 유의성 있는 차이를 보이지 않았고,2군과 3군에서는 처치전에 비해 14일부터 유의성 있는 증가를 보였으며,4군에서는 7일부터 유의성 있는 증가를 보였다. 2. ΔQ는 1군 < 2군,3군 < 4군 순이었다. 3. ΔQ는 1군과 비교시 2군은 7일,3군과 4군은 3일부터 유의성 있는 증가를 보였고,2군은 3군과 전 기간 동안 유의차가 없었다. 4군은 2군과 3군에 비해 28일에 유의성 있는 증가를 보였다. 4. 모든 군에서 재광화 속도는 점차 감소하였다. The purpose of this in vitro study was to compare the remineralization effect of commercially available anticariogenic products, exactly low level fluoride mouthrinse(500 ppm NaF), tooth cream with Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and fluoride mouthhnse plus tooth cream on artificial caries lesion. Artificial caries lesion was induced at the buccal surface of permanent third molar and the specimens were then divided (16 specimens/group) into four group. Twice a day during 28 days specimens of each group were treated with a commercially anticari.ogen.ic product as follows and applied to the pH cycling system. Group 1: control group (No treatment) Group 2: Tooth Mousse^(ⓡ) (GC Co. Japan) Group 3: chikachika^(ⓡ) (Samil Co. Korea) Group 4: chikachika^(ⓡ) + Tooth Mousse^(ⓡ) The long-term change of mineral loss(ΔQ) was evaluated by quantitative 1ight-induced fluorescence(QLF) and the following results were obtained: 1. ΔQ of Group 1 was not noticed statistically significant during 28 days comparing that prior to treatment. There was a statistically significant increase in ΔQ of Group 2 and 3 since 14 days. So was in ΔQ of Group 4 since 7 days. 2. ΔQ was increased as follows: Group 1< Group 2, 3< Group 4. 3. Comparing with Group 1, Group 2 was a statistically significant increase since 7 days and Group 3 and 4 were since 3 days. Comparing Group 2 with 3, there was not noticed statistically significant during whole duration. Group 4 was significantly higher than Group 2 and 3 after 28 days. 4. All groups demonstrated a decrease in the rate of remineraUzation as time goes on.

가토의 골수내 식염수 주입이 말초혈액 제변수에 미치는 영향

황주일,김세경,이원재,이기중,김병기,박규남,김인철 大韓應急醫學會 1992 대한응급의학회지 Vol.3 No.1

Study Objective: To examine the effects of intraosseous saline infusion on hematologic parameters. Design and Setting: Eight New Zealand White rabbits were anesthized intramuscular ketamine injection, An initial blood sample was withdrawn from an earlobe artery under introduction of anesthesia. An 18-gauge intraosseous(10) needle was inserted into proximal tibia of rabbits, and 10 mL/kg of normal saline was infused over two minutes after the intraosseus needle insertion. Measurements: Complete blood counts were performed on the blood sampled. The light microscopic examination of the peripheral blood smear was perfomed by clinical pathologic staff. Results: No statistically significant differences were found in hematologic paramenters from samples drawn before and after intraosseous infusion. Conclusion: We advocate less caution in the interpretation of hematologic studies performed on blood samples obtained soon after an intraosseous infusion.