팩강성이 모래의 강도에 미치는 영향

金昞逸,任俊赫,柳完圭 명지대학교 산업기술연구소 2005 産業技術硏究所論文集 Vol.24 No.-

Various researches have been undertaken to develop a new soil improvement method which can replace sand compaction pile(SCP) due to an increase of sand cost. Pack pile is one of the new methods reinforced by pack material such as geotextiles. In this study, a series of triaxial compression tests are carried out to find out shear strength characteristics of sand with and without pack. Total 6 different types of geotextile are selected for pack material. Based on the test results, stiffness of pack increases the strength of sand considerably.

전기광학 소자를 이용한 광응용 전압센서에 관한 연구

김영수,정진완,전병실 전북대학교 전자산업개발연구소 1991 전자산업연구 Vol.2 No.-

근로자 건강증진 실천에 영향을 미치는 요인

김은경,김병권,박종태,김형렬,구정완 대한산업의학회 2007 대한직업환경의학회지 Vol.19 No.1

목적: 본 연구에서는 사업장 근로자들의 건강증진 실천 현황을 알아보고, 실천에 있어서 장애요인이 되는 것이 무엇인지 파악하여 효율성과 실효성이 있는 사업장 건강 증진 사업의 발전방향을 모색하는데 그 목적을 두었다. 방법: 경기도 K대학병원, 서울시의 C대학병원에서 보건관리대행사업 또는 국고지원사업을 받고 있는 사업장 중 서울경기지역의 사업장 규모별 비율을 고려하여 사업장 규모별로 사업장 근로자수의 20%를 대상으로 사업장 건강증진사업 현황에 대한 설문조사를 시행하였다. 결과: 대상자 중 건강증진 활동을 하고 있는 비율은 51.3%로 나타났으며 건강증진을 실천하고 있는 경우, 금연을 하고 있다는 응답이 가장 많았고 실천의 계기로는 TV 또는 언론매체의 자극에 의한 경우가 33.4%, 건강진단에서 이상 소견 및 건강이상을 느껴서 시작한 경우가 22.1%였다. 근로자들이 가장 필요로 하는 사업장내 건강증진프로그램은 운동이 41.9%로 가장 높았고, 스트레스 관리가 그 뒤를 이었다. 건강증진사업에 대한 기대 정도는 상당히 효과가 있다고 응답하거나 어느 정도 효과가 있을 것이라고 응답한 경우가 84.8%로 건강증진사업에 대하여 근로자들이 긍정적으로 평가하고 있으며 기대도가 높은 것을 확인할 수 있었다. 건강증진 실천 여부에 영향을 주는 요인은 근로자의 건강상태, 직무자율성 등으로 나타났다. 결과: 개인의 의지 부족이나 시간, 비용 등이 건강증진 활동의 장애요인으로 작용하고, 근로자의 건강상태나 직무자율성 등이 건강증진 실천에 영향을 주고 있는 것으로 나타났다. 장애요인은 개인의 건강증진 실천 의지를 북돋아 주기 위한 사업장 단위의 근로자의 건강증진 활동의 유지 및 지지를 위한 프로그램 강화를 통해 극복할 수 있다. 또한 사업주의 시간적 배려, 사업주와 국가의 경제적 지원책, 지역사회 공공 체육시설 이용 개방 등을 고려할 필요가 있다. 건강증진 활동 실천집단과 비실천집단에 연령, 학력, 결혼여부, 연봉, 근무 일정 등의 차이가 있었는데 이를 통해 건강관리에 있어 시간, 경제, 개인의 생활환경이나 지식수준이 관여한다고 볼 수 있다. 결론: 이상의 결과를 통해 볼 때 건강증진 활동의 효과에 대해서 84.8%가 긍정적으로 평가하고 있다는 것을 알 수 있다. 현재 사업장 건강증진 활동은 금연이나 운동을 중심으로 이루어지고 있으나 본 연구 결과 운동이나 스트레스 관리에 대한 요구도가 높은 것을 확인할 수 있었다. 이에 따라 근로자들의 운동을 위해 사용이 용이한 운동 시설을 마련해야 하며 본 연구에서 긍정적으로 평가 되었던 바와 같이 사업장 밖에 공공 건강증진시설의 확대 방안을 강구하고, 스트레스 관리를 위한 구체적인 방안을 마련해야 할 것이다. Objective: The aim of this paper was to develop efficient and practical health promotion strategies in the workplace by investigating both the present status of health promotion and the barriers to its practice. Methods: A questionnaire was administered to 20% of industrial workers in the workplaces which receives the health care agency enterprise or are supported by a grant from the national treasury, K University Hospital in Gyeong-Gi province, and C University Hospital in Seoul. Results: According to the questionnaire survey, 51.3% workers were practicing health promotion activities and smoking cessation was the most common method among them. Regarding the factors that prompt workers to commence health promotion activities, TV or the mass media had a 33.4% effect, followed by a 22.1% effect for an abnormal finding at regular health screening. The most necessary health promotion activity in the workplace was exercise (41.9%), followed by stress management. When asked about their expectations of the health promotion program, 84.8% of the respondents answered that they expected it to be significantly or somewhat effective. Factors affecting the health promotion activities of workers were worker' s health status and job control. Conclusions: This study demonstrated that workers evaluate health promotion activities positively and that some workers are unable to participate in these activities despite their willingness to do so due to the barrier of circumstances. To encourage worker' s participation, the government and employers should remove barriers.

금형스프링을 이용한 송배전용 연결구조체의 내력실험

김호수,정희범,김진완,이배연,오병훈 청주대학교 산업과학연구소 2016 産業科學硏究 Vol.34 No.1

This study presents an experimental process to secure the capacity of mold spring connection structure for electric distribution cable. To this end, this study evaluates the capacity and safety of connection structure through the capacity experiment according to the various design variables

龍平 Ski場의 觀光客이 地域經濟에 미치는 影響

朴榮完,金炳文 관동대학교 1983 關大論文集 Vol.11 No.2

Kang Weon Province is a treasure house for tourists. There is not only a ski resort area, but there are resources for tourism year round-Spring, Summer, and antumn. As Korea has developed economically, tourism has also changed. The customary, more "active" and "varied forms of recreation, such as golf, skiing, Swimming, climbing, hiking, camping, and fishing. The is true especially for younger toursits. Since the young peung ski resort area is the only skiing region in Korea, skiers are attracted to the area from all over the country. Ninety Percent of skiers come from Seoul, and 10% from others regions. There are two ways to find out about attractive tourist areas. One way is from residencs which live near tourist sights, and the other way is from tourist resources about the tourist area. The young peung Ski resort area is 160KM from young peung tourist resources. The number of skiers exceeds the present accommodations for them. The tourist pattern in the ski region shows two peaks and two lows. Winter is the first peak and the second is fall. The high in the summer is due to tourists going to the East Sea bathing resorts. The first peak in winter accounts for 30% of all tourists in the country at that time, and 95% of all domestic tourists, including foreginers who live in Korea. There are many other tourist resources near the ski area. There are the famous beaches near Kangreung, and Oa Dea National Park. The youngPeung region is one spot on the tourist route in this Area. Skiing on young peoung has had little effect on regional economics as there are few lodginghouse or other accomodations. Becassuse skiing is popular and is a rapidly growing industry with many amature skiers, it would seem that other areas should be developed for skiing.

CdS 광도전막의 제조 및 그 응용

최병진,박욱동,이우일,김기완 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

The Polycrystallized CdS films have been fabricated at the substrate temperature above 200℃ by thermal evaporation method. When the CdS films were annealed at the temperature higher than 400℃, the dark resistivity was increased. From the photoconductive properties of CdS films under 50~1500uW/cm^(2) illumination, the maximum values of I_(p)/I_(d) ratio and photosensitivity were 60dB and 0.82, respectively. The optical properties of CdS films were measured by spectrometer, the optical band gap of CdS film was different with heat treatment, These results show that this evaporated CdS films are expected to be used as photoconductive cells or photoelectric sensors.

연약해성점토의 깊이별 흡수력 시험과 일축압축시험 결과를 이용한 시료교란도 연구

鄭庸宇,柳完圭,金昞逸,李萬洙 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

It is important to know the degree of disturbance when evaluating the soil strength parameters from laboratory test. In this study, suction tests and unconfined compression strength tests were carried out to investigate the degree of disturbance of sample with soft marine clay of Kwangyang. Based on the test results, suction test is a good quantitative analysis for the degree of disturbance and shows a similar tendency with the results of unconfined compression strength test.

미세알부민뇨를 동반한 인슐린 비의존성 당뇨병 환자에서 혈장 Endothelin의 변화

서예경,정상원,남직화,신병호,전종민,김정국,김동희,하승우,김보완 慶北大學校 醫科大學 1996 慶北醫大誌 Vol.37 No.3

목적 : 혈관내피세포에서 생성되는 endothelin(ET)는 강력한 혈관수축작용을 가진 펩타이드로 당뇨병 환자에서 혈관내피세포의 손상여부에 따라 혈중 농도가 증가할 수 있으며 혈관합병증과 관련이 있다는 보고가 있다. 그러나. 혈중 ET치의 상승과 당뇨병성 합병증의 상관성에 대해서는 논란이 많다. 이에 저자들은 인슐린 비의존성 당뇨병 환자에서 미세알부민뇨의 동반유무에 따른 혈중 ET치의 변화 및 혈장 ET치와 요중 알부민 배설률과의 상관성을 검토하였다. 대상 및 방법 : 인슐린 비의존성 당뇨병 환자중 미세알부민뇨를 보인 22명과 정상알부민뇨를 보인 43명을 대상으로 하였으며 혈장 ET를 측정하여 요중 알부민 배설률, 당뇨병성 망막증 및 당뇨병 관련인자들과의 관계를 비교하였다. 결과 : 당뇨병성 망막증이 합병된 군에서 망막증이 합병되지 않은 군에 비하여 혈장 ET치가 유의하게 높았던 반면 (각각 1.9±0.66, 1.5±0.76pg/㎖, p<0.05) 미세알부민뇨를 보인 군과 정상알부민뇨를 보인 군사이에 혈장 ET치는 통계학적으로 유의한 차이가 없었다(각각 1.9±1.14, 1.7±0.69pg/㎖). 또한 요중 알부민 배설률과 혈장 ET치 사이에 유의한 상관관계는 없었으며 미세알부민뇨를 동반한 인슐린 비의존성 당뇨병 환자군에서 혈장 ET치는 당뇨병의 관련인자들과도 유의한 상관관계가 없었다. 결론 : 인슐린 비의존 당뇨병 환자에서 혈장 ET치가 초기 당뇨병성 신증의 합병여부나 미세알부민뇨의 정도를 반영하기는 어려울 것임을 시사한다. Background : Endothelin(ET), a potent vasoconstritor peptide released from vascular endothelial cells, is known to be increased in diabetic patients with vascular damage and related with diabetic angiopathy. However, whether plasma ET levels may be related to diabetic complications is controversial. We studied the change of ET levels in non-insulin dependent diabetics with microalbuminuria and relation between ET and urinary albumin excretion rate. Methods : Plasma ET levels of 22 non-insulin dependent diabetics with microalbuminuria and 43 patients with normoalbuminuria were measured and relations of plasma ET to diabetic complications such as urinary albumin excretion rate, retinopathy and other associated factors were studied. Results : Plasma ET levels were significantly higher in patients with diabetic retinopathy than those without retinopathy(1.9 ± 0.66 vs 1.5 ± 0.76 pg/㎖. p<0.05). The difference, however, between diabetics with and without microalbuminuria was not significant(1.9 ± 1.14 vs 1.7 ± 0.69 pg/㎖). There were no correlations of plasma ET to urinary albumin excretion rate and to the other associated factors in non-insulin dependent diabetics. Conclusion : These results suggest that plasma ET levels may not seem to act as a predictor of diabetic nephropathy or microalbuminuria in non-insulin dependent diabetics.

골수구성 백혈병 환자에게 발생한 결핵성 림프절염

이창섭,송진수,최평균,조재현,방지환,박경화,박완범,김홍빈,김남중,윤성수,박선양,김병국,오명돈,최강원 대한감염학회 2006 감염과 화학요법 Vol.38 No.5

혈액질환 가운데 결핵 발생이 증가한다고 알려진 것은 호지킨 림프종을 포함한 림프증식성질환 그리고 모양세포성 백혈병 등이 있다. 또한 동종 골수이식을 받은 환자에서도 결핵은 증가한다고 알려져있다. Kaplan 등은 골수구성 백혈병 환자에서 결핵 발생이 증가한다고 보고하였다. 그러나 골수구성 백혈병 환자에서 결핵의 발생이 증가하는 이유에 대해서는 아직까지 정확하게 밝혀지지 않았다. 저자들이 2년 동안 후향적으로 조사한 180명의 성인 골수구성 백혈병 환자들 가운데 결핵이 발생한 환자는 4명이었고, 발생 부위는 모두 림프절이었다. 결핵은 골수구성 백혈병의 특정 아형에만 국한되어 발생하지 않았지만, 50%에서 FAB 분류에 의한 M4였다. 림프절이 종대된 골수구성 백혈병 환자에서 특히, 결핵의 유병율이 높은 나라에서는 결핵성 림프절염도 감별진단에 포함시켜야 한다. During the neutropenic phase, leukemia patients receiving chemotherapy are prone to bacterial and, fungal infections; occasionally mycobacterial, viral and protozoal organisms may also cause infections. Mycobacterium tuberculosis infection was reported very rarely in these patients. This report describes four patients with M. tuberculosis infection identified from 185 adult patients who were diagnosed myelogenous leukemia between January 2003, and December 2004. There was no patient with M. tuberculosis infection from 44 lymphoid leukemia and 11 acute biphenotypic leukemia patients. Sites of infection were all lymph nodes. Three among four patients were presented with lymphadenopathy at initial diagnosis of leukemia, and the other one presented with lymphadenopathy after induction chemotherapy. There was no patient presented with lymphadenopathy during the neutropenic phase. Tuberculous lymphadenitis was presented in a patient with three acute myelogenous leukemia (FAB class 2 M4, 1 M2) and a chronic myelogenous leukemia, accelerated phase. An acute myelogenous leukemia patient had a leukemic cell and tubercle bacilli in the same lymph node. Tuberculosis should also be included as a differential diagnosis in myelogenous leukemia patient with lymphadenopathy, especially in the countries in which the disease is endemic.

Alterations of Colonic Contractility in Long-term Diabetic Rat Model

Kim, Sun Joo,Park, Jae Hyung,Song, Dae Kyu,Park, Kyung Sik,Lee, Jeong Eun,Kim, Eun Soo,Cho, Kwang Bum,Jang, Byoung Kuk,Chung, Woo Jin,Hwang, Jae Seok,Kwon, Joong Goo,Kim, Tae Wan Korean Society of Neurogastroenterology and Motili 2011 Journal of Neurogastroenterology and Motility (JNM Vol.17 No.4

<P><B>Background/Aims</B></P><P>Dysfunction of the gastrointestinal tract occurs in about 76% of patients who are diabetic for more than 10 years. Although diabetes-related dysfunctions of the stomach such as gastroparesis have been extensively studied over the recent years, studies about the mechanism underlying colonic symptoms in long-term diabetes models are rare. Therefore, the goal of our study was to clarify the nature of colonic dysfunction in a long-term diabetic rat model.</P><P><B>Methods</B></P><P>The characteristics of colonic smooth muscle were investigated in Otsuka Long-Evans Tokushima Fatty (OLETF) rats, an animal model of type 2 diabetes. These results were compared to those obtained from Long-Evans Tokushima Otsuka (LETO) control rats.</P><P><B>Results</B></P><P>Spontaneous contractility of the proximal colon was significantly decreased in the diabetic rats compared to the controls, while the spontaneous contractility of the distal colon was not. The number of interstitial cells of Cajal networks in the proximal colon was greatly decreased in diabetic rats compared to the controls. Contractility of the proximal colon in response to carbachol, an acetylcholine receptor agonist, was significantly weaker in the diabetic rats. In addition, the degree of relaxation in response to nitric oxide in the proximal colon of diabetic rats also appeared to be attenuated.</P><P><B>Conclusions</B></P><P>The results from our study suggest that the decrease of interstitial cells of Cajal network, cholinergic receptors, and neuronal nitric oxide synthase in the proximal colon plays important roles in diabetes-related dysfunction of colon.</P>