지역통상정보 : 경상북도 지역 제조기업의 물류통상 파트너십 결정요인에 관한 연구

신정용 ( Jeong Yong Shin ),조정구 ( Cheong Gu Cho ),고용기 ( Yong Ki Koh ) 한국통상정보학회 2010 통상정보연구 Vol.12 No.1

XRF를 이용한 어린이집 보육실내 마감재 중금속 노출연구

박정옥 ( Jeong-ok Park ),최성우 ( Seong-woo Choi ),김수빈 ( Soo-bin Kim ),김도훈 ( Do-hoon Kim ),조정구 ( Jeong-gu Cho ) 한국환경분석학회 2017 환경분석과 독성보건 Vol.20 No.1

In this study, hazardous heavy metals used in 1,081 samples from childcare rooms were investigated with X-ray fluorescence (XRF) and inductively coupled plasma (ICP) analyses. Pb > Ba > Zn > Cr > Sb of heavy metals from paints and vinyl sheets were detected in order of descending concentration. A comparison of the analytical results from portable XRF and ICP revealed that, there was a similar tendency although there was a slight difference between the two measured datasets. The evaluation showed that the hazardous heavy metal of the highest concentration was Cd followed by Cr > Cu > Ba > Co > Pb > Sb. Therefore, XRF could be useful for measuring heavy metals above a certain concentration with the primary screening method. To keep childcare rooms healthy, it is necessary to add Ba, Sb and Zn which are contained in high concentrations in interior finishing materials to environmental safety standards.

Non - thermal Plasma 와 TiO₂ 광촉매 산화반응을 이용한 VOCs 처리

최금찬(Kum Chan Choi),조정구(Jeong Gu Cho),박석출(Suk Chul Park),김찬훈(Chan Hun Kim),정창훈(Chang Hun Jeong) 大韓環境工學會 2001 대한환경공학회지 Vol.23 No.12

고혈압환자에서 심 echo 도를 이용한 급속충혈기 좌심실후벽과 대동맥근 후벽후퇴속도의 비교

박옥규 ( Ock Kyu Park ),박양규 ( Yang Kyu Park ),정진원 ( Jin Won Jeong ),강정채 ( Jung Chaee Kang ),이상곤 ( Sang Kon Lee ),김영준 ( Young June Kim ),조정구 ( Chung Gu Cho ),최인태 ( In Tae Choi ) 대한내과학회 1985 대한내과학회지 Vol.29 No.4

부산지역 페인트제조시설의 VOC/HAPs 배출특성 및 흡착능 평가

송복주(Bok Joo Song),이승민(Seung Min Lee),조갑제(Gab Je Cho),조정구(Jeong Gu Cho),유평종(Pyung Jong You),김기곤(Gi Gon Kim) 大韓環境工學會 2012 대한환경공학회지 Vol.34 No.5

페인트제조시설에서 다량 발생하는 VOC/HAPs은 물질별 독성, 발암성 등의 특징으로 미량으로도 인체에 유해할 뿐만아니라, 하절기 오존 생성과 악취 민원의 원인물질로 작용하고 있어 이들 시설에 대한 배출특성과 제어방안에 대한 연구가 시급한 실정이다. 본 연구에서는 부산지역에 소재한 페인트제조시설 4개소를 선정하여 VOC/HAPs 주 배출공정 및 주요 오염물질을 도출하고 적절한 제어방안을 제시 하였으며, 천연소재인 Kapok fiber의 흡착 시험을 통하여 상용 흡착제로서의 적용 가능성을 평가하였다. 연구결과, 발생되는 VOC/HAPs의 60% 이상이 방지시설로 유입되지 않고 공장내부로 자연 휘발되어 외기로 확산되는 것으로 조사되었고 주요 물질로는 Toluene, Ethylbenzene, Xylene이 70% 이상의 분포를 나타내었다. 주요 악취 원인물질은 A, B, C사는 Toluene, D사는 m/p-Xylene으로 나타났으며, 악취방지시설인 활성탄 흡착시설의 평균 제거효율은 66.2%로 평가되었다. 이 결과를 토대로 오염물질의 외부확산을 최소화하기 위한 방안으로 중앙제어식 환기장치의 설치 등 다양한 제어방안과 함께 실제 운영시설의 규모를 고려한 흡착시설의 규격, 흡착제량, 교체주기 등을 산출·제시하여 현장에 적용 가능하도록 하였다. 도출된 원인물질을 표준시료로 활용하여 유통 활성탄과 천연소재인 Kapok fiber의 Toluene 흡착시험을 실시한 결과, 활성탄의 제거율은 대부분 99% 이상 우수한 것으로 나타났으나 Kapok fiber는 Space Velocity의 차이에 따라 91.9%, 66.7%의 제거효율을 나타내어 Kapok fiber의 흡착능은 미흡한 것으로 나타났으나, 저렴한 소재 가격, 친환경성 등을 감안한다면 기초 흡착제로서의 적용은 가능한 것으로 판단되었고 향후 상용화에 필요한 추가연구가 필요할 것으로 사료된다. In this study, we suggested adequate control technology by analyzing emission process and main chemical of VOC/HAPs generated from four paint factories in Busan area. And we estimated whether Kapok fiber, which is a natural material, can be commercially used for an absorbent by testing adsorption ability. As a result of this sturdy, above 60% of VOC/HAPs was volatilized and dispersed inside the working place without conducting control system of facilities during manufacturing paints. Concentration profile of VOC/HAPs, which is volatile naturally outside the factories, is surveyed above 70% at Toluene, Ethylbenzene, and Xylene. And a result of evaluation of odor attribution level about the component whose Odor Threshold is known, it is estimated that major cause material of A, B, C factories is Toluene and that of D factory is m/p-Xylene. And that result presented design arguments such as facilities specifications, activated carbon filling volume, and replace cycle of activated carbon as control technology. Also, that result presented emission process improvement such as adsorption of central-controlled ventilation device, installation of inlet flenge, and potable cleaning process. The rate of pollutant adsorption of Kapok fiber, which is natural material, is indicated about 91.9%, 66.7%. That result validated the possibility as replacement of activated carbon.

부당노동행위 구제명령의 실효성 확보방안

이윤선,조정구 호남대학교 대학원 2012 호남대학교 대학원 논문집 Vol.8 No.-

The labor's 3 primary rights is a basic legal right prescribing the relationship between employees and others, especially between employees and user-employers. In its nature of directly describing such relationships, the right is also applied to the relationship between general individuals. According to the「Trade Union and Labor Relations Adjustment Act」, anti-unfair-labor-practice system is to realize the labor's 3 primary rights, Thus, the effect of labor's 3 primary rights for each individual is also directly applied to the relationship between employees (labor unions) and employers or employees (labor unions) and employees (labor unions) as well. And any person who can commit an unfair labor practice is also in a position to infringe labor's 3 primary rights in the legal and practical senses. So any employee or labor union whose labor's 3 primary rights are infringed by other employees or labor unions, should also be able to require the exception from such an infringement themselves. To secure the effectiveness of an order of remedy unfair labor practices, anti-unfair-labor-practice system should be improved along with the National Labor Relations Commission's remedial systems as well as the transparency and expertise of the Commission itself. (1) To improve the anti-unfair-labor-practice system, the subject of committing an unfair labor practice should be broadened. This thesis explored solutions by legislating the「Trade Union and Labor Relations Adjustment Act」regarding a sub-contractor's client recognized as a user-employer by several rulings, etc.; user-employer of dispatched workers; plus, labor unions, legal representatives (labor law firms, law firms), relatives of the CEO of a company (spouse, lineal ascendants/descendants, brothers and sisters), etc. who is in a position to infringe labor's 3 primary rights in the legal and practical senses. (2) To enhance the National Labor Relations Commission's remedial systems, first, its discretionary power should be expanded for the remedial order on feasance/non-feasance of unfair labor practices. And second, the outline of its remedial order should be publicized by the press. Third, a progressive enforcement fine system should be introduced for better remedial order compliance. (3) For elevated National Labor Relations Commission's transparency and expertise, the NLRC can be moved under control of the Prime Minister from the current, Ministry of Employment and Labor so that the Commission can manage personnel, budget, training, etc. on its own. And second improvement is to expand the quota of standing commissioner to hire more experts in the labor law and put a deliberation commission permanently in place. Last is to change the way of selecting members representing the public interest. The membering method now is based on labor groups' recommendations. But by changing it to an open competition, labor affair deliberations will become more transparent and specialized.

광촉매 산화반응을 이용한 트리클로로에틸렌(TCE) 처리에 관한 연구

정창훈,조정구,송민종,전의찬,최금찬 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1

Photocatalyzed degradation of trace level trichloroethylene(TCE) and toluene in air were carried out over near UV illuminated titanium dioxide(anatase) pellet in a flow reactor. This study was investigated the effects of humidity and oxygen. Inlet concentrations for TCE was injected with the ranges of 10~100 ppm. TCE photooxidatino was very rapid under our experimental conditions, and ~100% conversion was achieved for TCE concentration examined up to 70 ppm as a single air contaminant. An important finding was that competitive adsorption between humidity and oxygen has a significant effect on the oxidation rate.

성장호르몬과 프로락틴을 분비하는 뇌하수체 선종이 동반된 Albright증후군 1예

오효정,김용성,신진호,김하영,박병현,조정구 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

제2형 당뇨병 환자에서 고혈압 유무에 따른 경동맥 죽상경화증 및 죽상경화증 위험인자들의 비교

박병현,정진원,조정구 대한당뇨병학회 2000 임상당뇨병 Vol.1 No.1

Background: Atherosclerosis is importantly associated with cardiovascular morbidity and mortality in type 2 diabetes mellitus. It has been reported that intima-media thickness (IMT) of common carotid artery (CCA) measured by ultrasound B-mode scan is capable of quantitatively evaluating atherosclerotic changes in a safe and reproducible way. However, little information currently exists on the difference of carotid atherosclerosis and atherosclerotic risk factor between type 2 diabetes with hypertension and type 2 diabetes without hypertension. Thus, current study was undertaken to investigate the association between hypertension and IMT of CCA, measured by ultrasound B-mode scan, in type 2 diabetes and to find the difference of atherosclerotic risk factors and the prevalence of macrovascular complication between type 2 diabetes with hypertension and type 2 diabetes without hypertension. Method: High resolution B-mode ultrasonography was peformed in 21 type 2 diabetes without hypertension and 20 type 2 diabetes with hypertension to determine the correlation between hypertension and degree of carotid artery atherosclerosis by measurement of common carotid intima-media thickness (IMT) and carotid atherosclerotic plaques. Concurrently serum total cholesterol, HDL cholesterol, LDL cholesterol, triglyceride, lipoprotein (a), HbA_(1c), C-peptide levels and body mass index(BMI) were measured and history of hypertension, smoking and duration of diabetes were investigated. Presence of macrovcscular complications such as cerebral infraction, angina pectoris, myocardia infration and peripheral artery occlusion were examined by medical recording during the last 6 months. Results: 1) Common carotid artery IMT values for type 2 diabetes with hypertension (1.O1 0.25㎜,n=20) were significantly greater than type 2 diabetes without hypertension (0.85±0.25㎜, n=21). But, weak correlation was existed between hypertension and common carotid IMT (r=O.31, p=0.047). 2)Presence of carotid artery atherosclerotic plaque was more common in hypertensive diabetes than normotensive diabetes (18/20:90% vs 18/21: 52.4%, p=0.007). 3) Most common involving site of atherosclerotic plaque was carotid bulb and it was not different between two groups. 4) Macrovascular complication was more common in hypertensive diabetes group than normotensive diabetes group(11/20; 55% vs 5/21: 24%, p=0.042). 5) Serum triglyceride level for hypertensive type 2 diabetes group were significantly greater than normotensive type 2 diabetes group (2.31±1.60 mmol/L, vs 1.48 0.76mmol/L; p=0.039). 6) Age, sex, duration of diabetes, smoking. BMI, HbAlc, C-peptide, total cholesterol, HDL cholesterol, LDL cholesterol, and lipoprotein(a) were not different in two groups. Conclusion: There was week correlation between hypertension and carotid intima-media thickness in type 2 diabetes. Type 2 diabetes with hypertension were greater carotid IMT, more presence and extent of atherosclerotic plaque, higher level of serum triglyceride, and higher macrovascular complication than type 2 diabetes without hypertension. 연구배경: 죽상경화증은 제2형 당뇨병 환자의 심혈관 질환 유병률과 사망률에 중요한 영향을 미친다. 고해상도 B-mode 초음파를 이용한 경동맥 내중막두께 측정은 죽상경화증의 초기변화를 관찰하는데 도움되는 것으로 알려져 있다. 최근 제2형 당뇨병 환자에서 경동맥 내중막두께 측정과 이와 연관된 죽상경화증 위험인자에 대해 보고되고 있으나 고혈압 동반에 따른 차이에 대해서는 잘 알려져 있지 않다. 본 연구에서는 제2형 당뇨병 환자들을 대상으로 고혈압 동반군과 정상 혈압군으로 구분하여 고해상도 B-mode 초음파를 이용 경동맥 내중막 두께를 측정하고 죽상경화반을 관찰하였으며, 고혈압 동반 여부에 따른 경동맥 내중막두께의 변화, 죽상경화반 유무, 죽상경화증 위험요소의 차이 및 대혈관 합병증 발생률을 조사하였다. 방법: 고혈압이 동반된 제2형 당뇨병 환자20명, 정상혈압의 제2형 당뇨병환자 21명물 대상으로 고해상도 B-mode 초음파를 이용하여 경동맥 내중막두께를 측정하고 죽상경화반의유무, 석회화 유무, 죽상경화반 위치 및 수를 관찰하였으며, 동시에 혈장내 총콜레스테롤, 중성지방, HDL 콜레스테롤, LDL 콜레스테롤, lipoprotein(a), 당화혈색소, 체질량지수, 당뇨병의 유병기간, 흡연력, 대혈관 합병증 등을 조사하여 두 군간에 비교 분석하였다. 결과: 1) 고혈압 동반군 (1.01 ±0.25㎜)에서 정상 혈압군(0.85±0.25㎜)에 비하여 경동맥 내중막두께가 증가되어 있었으며 고혈압과 경동맥 내중막두께는 약한 상관관계를 보였다(r=0.31, p=O.049). 2) 경동맥 죽상경화반은 정상 혈압군이 11/21명 (52.4%), 고혈압 동반군이 18/2O명 (90%)으로 의미 있는 차이를 보였으나 (p=0.007), 죽상경화반의 석회화는 의미 있는 차이는 없었다. 또한 총경동맥과 내,외경동맥에서 50%이상의 혈관 내경 협착 유무를 관찰하였으나 두 군에서의 차이는 없었다(1/21명 vs 3/20명). 3)경동맥 죽상경화반의 발생 장소는 두 군에서 경동맥이 분지 하는 지점인 구부가 가장 많았다. 4) 대혈관 합병증의 발생은 정상 혈압군 보다 고혈압 동반군에서 유의하게 높았다(5/21명:24 % vs 11/20명: 55 %; p=0.042). 5) 고혈압 동반군에서 정상 혈압군에 비해 혈중 지질 성분 중 중성지방이 높았다(2.31±1.60mmol, vs 1.48 ±0.76 mmol/L; p=0.039). 6) 그외 나이, 성별, 당뇨병의 유병기간, 당화혈색소, 총콜레스테롤, LDL 콜레스레롤, HDL 콜레스테롤, lipoprotein(a), C-peptide, 흡연, 체질량지수 등은 두 군에서 차이가 없었다. 결론: 당뇨병 환자에서 고혈압은 경동맥 내중막두께와 약한 상관관계를 보였으며, 고혈압을 동반한 당뇨군에서 정상혈압 당뇨군에 비하여 두꺼운 경동맥 내중막두께, 죽상경화반의 존재 증가, 높은 중성지방 및 대혈관 합병증의 증가를 볼 수 있었다.

관상동맥협착 정도 예측을 위한 경동맥 초음파 검사의 유용성

고광일,박병현,오석규,김남호,조정구,정진원 대한노인병학회 2001 대한노인병학회지 Vol.5 No.4