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

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.

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.

푸드뱅크 기탁식품의 안전성 확보를 위한 HACCP 제도 적용

김철재,박현신,배현주,이지해,양일선,강혜승 한국식생활문화학회 2002 韓國食生活文化學會誌 Vol.17 No.3

The purpose of this study was to analyze the problems arising from the actual conditions of the Foodbank, and to implement the HACCP system as a solution in terms of increasing the safety of donated food within the Foodbank. In order to apply HACCP system, the entire Foodbank working process such as preparation, collection, transportation, division, and distribution was considered and analyzed to decide the application point for CCPs. Donated foods mainly consisted of processed foods, raw materials, lunch boxes, and cooked foods from mass catering establishments, which dominated over the others in terms of quantity. Cooked foods were divided into three groups based on menu-types and processing methods. Temperature, pH, and aw were measured on cooked foods, and Total Plate Count, Coliforms, E. coli, Salmonella spp., Staphylococcus aureus, Listeria monocytogenes, and E. coli O157:H7 were conducted in order to apply a HACCP plan. Form these experiments, temperature, pH, and aw of donated food were likely contributed to microbial growth. Donated foods before HACCP implementation showed high numbers in terms of total plate count and Coliforms, both well over the acceptable standard levels. By setting the CCPs on maintenance of donated food below 10℃ and using a 75 ℃ reheating method, microbiological hazard levels were able to be controlled and lowered. From these results, it is concluded that in order to guarantee food safety, foods donated to the Foodbank must not only maintain a reasonable level of initial microbiological growth, but also must be handled properly through time and temperature controls within the Foodbank system. Furthermore, in terms of implementing the HACCP plan within the Foodbank management structure, basic food safety and sanitation measures, such as reheating facilities and various cold chain systmes such as refrigerated vehicle for food transportation are importantly needed. The training and education of Foodbank personnel and management in areas such as awareness of hygiene and safe food handling and practice are also required and necessary.

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

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.

볼링장 경영환경에 따른 전략적 특성이 경영성과에 미치는 영향

김철주,박현서 朝鮮大學校 스포츠科學硏究所 2005 스포츠科學硏究 Vol.16 No.-

This study is intended to examine effects of strategic characteristics on business performance in the business environment of bowling alley. To achieve this goal, this study sampled 250 managers who ran a bowling alley in 2005 using random sampling. Of 230 questionnaires returned. 24 were dropped due to omission of some items and finally a total of 206(82.4%) were used for actual analysis. In order to achieve the goal of this study. a questionnaire survey was selected. Research factors included independence factor(internal and external environment related to business of bowling alley), parameters(strategic characteristics such as R&D. marketing, efficiency, diversified management, and cost-leadership), and dependent factor(business performance such as profitability index and qualitative growth). In order to confirm the loading score of instrument. LISREL' maximum likelihood method was used. Its results suggested high convergent validity. Covariance structure model was conducted and the following results were obtained. First. the result of analysing effects of business environment on strategic characteristics suggests that in external environmental factors, growth had a positive effect on R&D, efficiency. and cost-leadership strategies: complexity factors on R&D, marketing, efficiency, and cost-leadership strategies; and dynamics factors on efficiency strategy. In internal environmental factors, program development and introduction had a positive effect on marketing, efficiency. and cost-leadership strategies; personnel and organization on efficiency, and cost-leadership strategies; and financial structure on had a positive effect on R&D. marketing, efficiency, and cost-leadership strategies. Second, the result of analysing effects of strategic characteristics on business performance suggests that R&D strategy had a positive effect on qualitative growth; marketing on qualitative growth: efficiency on profitability and qualitative growth: and cost-leadership on qualitative growth

Hard Dumbbell 分子液體의 統計熱力學

정기주,최철규 충남대학교 자연과학연구소 1995 忠南科學硏究誌 Vol.22 No.2

The statistical thermodynamics of hard dumbbell molecular liquids in site frame is studied by using the equivalent hard sphere as the reference system on the other hand and the equivalent hard disphere system on the other hand. Thermodynamic properties are calculated by using the well known Carnahan-Starling fitting function and the recently proposed Wertheim's formula it is then shown, by comparing with the Monte Carlo simulation data, that the hard disphere theory is effectively applicable approximation for the greater elongation and the higher packing fraction of the molecule of the hard dumbbell liquids.

正常 Rat에서의 蔗糖經口投與에 依한 高血糖症에 미치는 대추나무 葉 抽出物의 影響

고현철,서대규,김병수,강주섭 漢陽大學校 環境科學硏究所 1994 環境科學論文集 Vol.15 No.-

대추나무의 열매는 漢方에서 여러方面에 廣範이 利用되고 있으나 그 잎은 利用되지 않고 있으나 이 잎에는 甘味受容抑制用과 糖의 腸에서의 吸收抑制作用을 가지는 成分이 含有되어 있음이 밝혀져 糖吸收抑制物質로서의 開發의 對象이 될 수 있을 것이다. Insulin??乏等으로 因하여 耐糖能에 異常이 있는 疾患에서는 糖吸收을 抑制함으로 腸管에서의 急擊한 大量의 糖의 吸收를 事前에 防上시켜 Insulin分泌細胞에 대한 負荷를 輕減시켜 줄 수 있는 것임으로 대추나무 葉 抽出物이 糖吸收抑制作用이 있는지를 確認코져 蔗糖負荷動物에서의 血糖値 上昇反應에 미치는 대추나무 葉 抽出物이 作用을 檢討하여 다음과 같은 成績을 얻을 수 있었다. 1. 대추나무 葉 抽出物이 負荷된 蔗糖量의 1/10에 該當되는 比較的 少量에서는 蔗糖負荷에 依한 血糖値上昇作用을 抑制할 수 없었다. 2. 比較的 大量 卽 蔗糖負荷量의 3/10에 該當되는 用量에서는 대추나무 葉 抽出物이 蔗糖負荷에 依한 血糖値上昇을 有意하게 抑制하였다. 以上의 結果로 미루어 보아 대추나무 葉 抽出物은 糖攝取에 의한 血糖値上昇反應을 억제하여 비만과 당뇨병치료에 이용될 수 있을 것으로 사료된다. The fruits of the Ziziphus jujuba have been to use an application in the various ways of chinese medicine and the leaves of this plant have been not to use for this purpose. But, It was pointed out that leaves of the Ziziphus jujuba contain the ingredients of inhibitory action in sweet taste reception of the tongue and intestinal absorption of glucose. Therefore, it is done to developing substance as inhibitory substance of intestinal glucose absorption. The patients with glucose intolerance because of insulin deficiency have a condition of a sudden intestinal glucose absorption. For this reason, the suppression of the sudden glucose absorption alleviate loads of insulin secretion of pancreatic islet cell. In this study, the author have the purpose which confirms the effect of EZJ to intestinal glucose absorption by sugar intake with this substance, that is, levels of blood glucose after sucrose in dose of 6g/kg of body with EZJ in dose of 0.6g/kg of weight were determined to investigate the effect of EZJ on the elevation of blood glucose levels with sugar intake in normal rats. After an overnight fasting, sucrose solution was given orally to the control group. Experimental groups were divided into single EZJ, Triple EZJ, EZJ administered at 2 hours and 1 hours before sucrose and another one with sucrose. Blood glucose levels were determined with Glucoscott at just before and 15, 30, 60, 90 and 120 minutes after sucrose adminstration. The results were as follow : 1. The relative small amounts of EZJ in does of a tenth of sucrose loading dose was not suppressed the elevation of blood glucose levels with oral sugar intake. 2. The relative large amounts of EZJ in does of three tenth of sucrose loading dose was significantly suppressed the elevation of blood glucose levels with oral sugar intake. Presnt results suggest thae EZJ has a suppressive effect on raising blood glucose levels after oral sucrose administration. This fact would be the advantage of EZJ in an application to the therapy or prevention of dabetes mellitus and obesity.