중소규모 제조업체 근로자의 인구·사회학적 특성이 건강행동변화단계에 미치는 영향

구명회,임현우,박정일,이강숙,구정완 大韓産業醫學會 2002 대한직업환경의학회지 Vol.14 No.1

목 적 : 근로자 건강증진을 위한 사업장 건강증진 사업 프로그램 기획실에 건강 위험요인을 평가하고 근로자 특성에 4따른 행동변화단계를 조사하여 행동 변화단계에 따른 성공적인 근로자 건강증진전력을 위한 기초자료를 제공하고자 본 연구를 진행하였다. 방 법 : 경인지역이 중소 기업 제조업체 근로자 282명을 대상으로 설문조사를 수행하였으며, 일반적 특성에 대한 조사, 건강위험평가, 위험요인에 대한 행동변화단계를 조사하였다. 결 과 : 건강위험평가에서 흡연자는 남자 근로자에 서 65.7 %, 규칙적인 운동을 하지 않는 남자 근로자는 70.5 %, 여자 근로자는 86.1 %이었고 음주는 남자 근로자의 78.6 %, 여자 근로자인 50 %이었고 과음은 남자 근로자의 29.5 %, 여자 근로자의 11.1 %이었다. 건강한 생활습관으로의 행동변화단계로 계획전단계, 계획 단계, 실천단계, 유지단계 등 4개의 단계로 보면 근로자에서의 금연에 대하여 각각 40.5 %, 23.7 %, 12.1 % 및 23.7 %, 운동에 대하여는 18.4 %, 37.6 %, 17.7 % 및 26.3 %, 음주하였던 사람중 절주에 대하여는 20.9 %, 15.4 %, 10.0 % 및 53.7 %이었다. 흡연을 하는 보건관리자의 행동단계가 일반근로자 보다 유의하게 많았다. 운동에 대해서는 근로자중 50세 이상과 생산직 근로자에서 계획전단계가 다른 근로자보다 유의하게 많았다. 결 론 : 이상의 결과로 대부분의 근로자가 금연을 제외하고는 건강한 생활습관으로의 행동변화를 원하는 것을 알 수 있었으며 근로자의 특성에 따라 행동 변화단계가 다르므로 이를 고려한 다양한 건강증진 프로그램을 개발함으로써 참여율 및 성공율을 높일 수 있으리라 사료된다. Objectives : This research attempts to investigate the relationship between health risk factors and workers' behavioral changes based on individual worker's characteristics to allow the development of more effective health promotion programs in businesses places. Methods : A questionnaire survey was conducted with 282 workers employed in small to medium sized enterprises in the Kyong-in area of Korea. The questionnaire was composed of general characteristics, a health risk assessment and an evaluation of the stage of behavior change for health promotion strategy in the workplace. Results : The health risk assessment revealed that 65.7 % of male workers smoke, 70.5% of male workers do not exercise on a regular basis, 86.1 % of female workers do not exercise at all, and 78.6 % of male workers and 50 % of female workers drink alcohol. In addition, the survey identified that 29.5% of male workers are addicted to excessive drinking, as are 11.1% of female workers. Based on the four stages of behavioral changes that lead to health, the pre-contemplation stage, contemplation stage, action stage, and maintenance stage, 40.5 %, 23.7 %, 12.1 % and 23.7 % of workers are in these stages, respectively, with regards to quitting smoking. As for regular exercises, 18.4 %, 37.6 %, 17.7 %, and 26.3 % of workers belong to each stage, respectively. As for moderation in drinking, 20.9 %, 15.4 %, 10.0 %, and 53.7 % are in each stage, respectively. The rate of health managers in the active stage of quitting smoking is significantly higher than that of general workers. Among the workers who do not exercise on a regular basis, workers over 50 years-old and blue color workers are more common in the precontemplation stage than any other worker groups. Conclusions : The results of this study suggest that the stages of behavioral change vary with worker characteristics. An awareness of the effects of the high risk factors is essectial for promoting workers' attendance in health promotion programs.

비육돈 및 산란계 밀집사육과 스트레스 대응 호르몬의 상관성에 대한 연구

구중회 ( Jung Hoi Koo ),이승혜 ( Seung Hye Lee ),임연미 ( Yeon Mi Lim ),김소남 ( So Nam Kim ),허용 ( Yong Heo ) 한국동물실험대체법학회 2007 동물실험대체법학회지 Vol.1 No.2

Prior to systemic investigation on intense husbandry environment-mediated stress outcome in pig or hen, we compared serum levels of epinephrine, norepinephrine, and cortisol in pigs or hens housed in intense husbandry confinement building or environmentally friendly husbandry facility. Pigs were accommodated under density of 3 per 3.3 m2 and were kept on wet floors in the intense husbandry confinement building with fan-ventilation system. Meanwhile, the environmentally friendly husbandry facility with open ventilation system accommodated 2 pigs per 3.3 m2 and pigs were kept on dry floors. Hens were housed under density of 3 per 0.1 m2 in wire-partitioned battery cage at the intense husbandry confinement building with fan-ventilation system. Meanwhile, the environmentally friendly husbandry facility with open ventilation system accommodated 11 hens per 3.3 m2 on flat ground. Five animals from each facility were randomly chosen and their peripheral blood was collected from jugular vein in pig or wing vein in hen. Levels of epinephrine, norepinephrine, and cortisol were determined using commercially available ELISA kit. Pigs housed in the intense husbandry confinement building demonstrated 10-fold and 6-fold lower level of epinephrine and norepinephrine, respectively, than those in the environmentally friendly husbandry facility. Furthermore, level of cortisol was significantly lowered in both pigs and hens housed in the intense husbandry confinement building, compared with that in the environmentally friendly husbandry facility. Overall our results suggest that pigs and hens housed in the intense husbandry confinement building are not adequately responding to extrinsic stress such as manual bleeding, eventually leading to vulnerability to various diseases.

연구논문 : 비육돈 및 산란계 밀집사육과 스트레스 대응 호르몬의 상관성에 대한 연구

구중회 ( Jung Hoi Koo ),이승혜 ( Seung Hye Lee ),임연미 ( Yeon Mi Lim ),김소남 ( So Nam Kim ),허용 ( Yong Heo ) 한국동물실험대체법학회 2007 동물실험대체법학회지 Vol.1 No.2

Prior to systemic investigation on intense husbandry environment-mediated stress outcome in pig or hen, we compared serum levels of epinephrine, norepinephrine, and cortisol in pigs or hens housed in intense husbandry confinement building or environmentally friendly husbandry facility. Pigs were accommodated under density of 3 per 3.3 m2 and were kept on wet floors in the intense husbandry confinement building with fan-ventilation system. Meanwhile, the environmentally friendly husbandry facility with open ventilation system accommodated 2 pigs per 3.3 m2 and pigs were kept on dry floors. Hens were housed under density of 3 per 0.1 m2 in wire-partitioned battery cage at the intense husbandry confinement building with fan-ventilation system. Meanwhile, the environmentally friendly husbandry facility with open ventilation system accommodated 11 hens per 3.3 m2 on flat ground. Five animals from each facility were randomly chosen and their peripheral blood was collected from jugular vein in pig or wing vein in hen. Levels of epinephrine, norepinephrine, and cortisol were determined using commercially available ELISA kit. Pigs housed in the intense husbandry confinement building demonstrated 10-fold and 6-fold lower level of epinephrine and norepinephrine, respectively, than those in the environmentally friendly husbandry facility. Furthermore, level of cortisol was significantly lowered in both pigs and hens housed in the intense husbandry confinement building, compared with that in the environmentally friendly husbandry facility. Overall our results suggest that pigs and hens housed in the intense husbandry confinement building are not adequately responding to extrinsic stress such as manual bleeding, eventually leading to vulnerability to various diseases.

팔신경얼기의 주요 말단가지를 이루는 척수신경구성

구정회(Jung-Hoi Koo),이규석(Kyu-Seok Lee) 대한체질인류학회 2007 해부·생물인류학 (Anat Biol Anthropol) Vol.20 No.1

팔신경얼기의 주요 말단가지들은 다양한 척수신경의 변이를 나타내는 것으로 알려져 있다. 이에 저자들은 시신 32쪽을 대상으로 팔신경얼기의 주요말단가지인 근육피부신경, 정중신경, 자신경, 노신경, 겨드랑신경에 대한 척수신경 구성의 변이를 관찰하여 다음과 같은 결과를 얻었다. 근육피부신경은 다섯째, 여섯째, 일곱째목신경으로 구성된 유형이 75.0%로 가장 높은 출현빈도를 나타내었다. 신경의 구성은 다섯째목신경이 1.68±0.21 ㎜, 여섯째목신경이 1.66±0.40㎜로 비슷하게 참여하였고 일곱째목 신경이 가장 가늘었다. 정중신경에서는 여섯째목신경에서 첫째가슴신경으로 구성된 유형이 87.5%로 가장 높은 빈도를 보였다. 일곱째목신경이 2.64±0.48㎜로 가장 두꺼웠고 다섯째목신경이 가장 가늘었다. 자신경의 척수신경구성 네 유형중 일곱째, 여덟째목신경과 첫째가슴신경으로 구성된 유형이 75.0%로 가장 높은 빈도를 보였다. 여덟째목신경이 2.64±0.57㎜로 가장 두꺼웠고 첫째가슴신경이 가장 가늘었다. 노신경의 척수신경 구성의 변이는 네 유형으로 관찰되었다. 다섯째목신경에서 첫째가슴신경까지로 구성된 유형과 다섯째에서 여덟째목신경까지로 구성된 유형이 모두 43.7%의 가장 높은 빈도를 보였다. 신경의 구성은 일곱째목신경이 2.70±0.52㎜로 가장 두꺼웠고 첫째가슴신경이 가장 가늘었다. 겨드랑신경의 척수신경구성의 변이는 두 유형으로 관찰되었다. 다섯째, 여섯째, 일곱째목신경으로 구성된 유형이 56.2%로 가장 높은 빈도를 보였다. 여섯째목신경이 1.73±0.56㎜로 가장 두껍게 참여하였다. 이상을 종합하면 팔신경얼기의 말단가지에서 다양한 변이가 나타나는 것을 알 수 있었다. Variations of spinal nerue compositions, which giue rise to the variable motor and sensory component, occured at the terminal branches of brachial plexus. This study performed to investigate the spinal nerve compositions of the main terminal branches of the brachial plexus in 32 sides of Korean adults. The main terminal branches contained the musculocutaneous, median, ulnar, radial and axillary nerves. The obtained results were as follows. The spinal nerve compositions of musculocutaneous nerve appeared as two types. The most frequent type was composed of C5, C6 and C7 at 75.0%. The mean diameter of C5 and C6 was 1.68±0.21 ㎜ and 1.66±0.40 ㎜, respectively. The median nerve appeared as two types. The most frequent type was composed of C6, C7, C8, T1 components at 87.5%. The mean diameter of C7 was the thickest at 2.64±0.48 ㎜ and C5 was most thin at 0.28±0.04 ㎜. The ulnar nerve appeared as four types. The most frequent type was comprised with C7, C8 and T1 at 75.0%. In the mean diameter, C8 was the thickest with 2.64±0.57㎜ and T1 was most thin with 0.06±0.56 ㎜. The radial nerve appeared as four types. The most frequent type was comprised from C5 to T1 at 43.7%. In the mean diameter, C7 was the thickest at 2.70±0.52 ㎜. The axillary nerve appeared as two types. The frequentest type was comprised with C5, C6 and C7 at 56.2%. In the mean diameter, C6 was the thickest at 1.73±0.56 ㎜. From the obtained results, spinal nerve compositions of the main terminal branches of the brachial plexus were more variable than the description of the anatomic textbook.

서울市內 市場에서 採集한 菜蔬類에 附着된 寄生蟲 調査

구성회,박정오,김창환 한국환경위생학회 1976 한국환경보건학회지 Vol.3 No.1

Korea Parasite Eradication Association alleged in its seasonal report spring/1975 that 36.8 percent of primary, middle and high school students in Seoul area are infected with parasites. For the purpose of a comparative study between the high rate of parasite infection among Korean students and that of parasite eggs attached to vegetables which perform intermediary role in carrying the eggs to human body, such vegetables as lettuce, Korean cabbage, young radish, green onion, cabbage which are on sale at several markets in Seoul city are sampled at random for study. The infection rate of parasitic eggs and larvae on vegetables is studied twice while the detaching mean while removing rate of eggs and larvae in proportion to the number of washing them is studied three times. Every 300 grams of vegetables is taken at random for examination and everyone of them is washed with a hard brush and then the kinds of parasite eggs and the ratio of eggs attached to them are studied. The results are as follows: 1) The rate of infected vegetables with parasitic eggs and larvae according to the kinds of vegetables is; young radish; 29.3%, Korean cabbage; 26.3% Green onion; 22.5%, lettuce; 14.1%. cabbage; 7.8% 2) The rate of infection according to the kinds of parasites is; Ascaridae; 27.8%, Ancylostomatidae; 10.6%. Taenia; 5.7% Clonorchis; 0.5%, Enterobius and Trichocephalus are detected only 0.2%, which is less than other parasites. 3) The variation of the infection rate on the examined materials according to seasonal weather condition, summer and autumn, is nearly the same; summer; 50.2% autumn; 49.2% 4) The detaching or removing rate of parasitic eggs and larvae according to the number of Washing is; 1st washing ; 68.1% 2nd washing ; 24.3% 3rd washing ; 7.6%

Trends in Surgical Treatment of Femoral Head Osteonecrosis in South Korea: An Analysis Using Nationwide Claims Database

Jung-Wee Park,Hong Seok Kim,Sojeong Park,Sung Hwa Kim,Young-Kyun Lee,Kyung-Hoi Koo 대한정형외과학회 2022 Clinics in Orthopedic Surgery Vol.14 No.4

Background: Osteonecrosis of the femoral head (ONFH) involves young or middle-aged adults, and its incidence is increasing along with increasing use of steroids in the management of organ transplantation and adjuvant therapy for malignant neoplasms. To date, no pharmacological agent has been proven to prevent or retard the progression of ONFH, and surgical procedures including joint preservation procedures and hip arthroplasties are main treatments for the disease. Although ONFH is the most common or second most common disease for hip arthroplasty in East Asian countries, the trend of surgical procedures in this region remains unknown. Thus, we evaluated trends in surgical treatment of the disease in South Korea. Methods: We identified patients with ONFH from the Korean Health Insurance Review and Assessment (HIRA) database, a nationwide medical claims database of South Korea, between January 2007 and December 2018 and calculated the proportions of following surgical procedures at each year: total hip arthroplasty (THA), hemiarthroplasty (HA), core decompression/multiple drilling, femoral osteotomy, and vascularized bone grafting. Results: The total number of procedures increased from 3,824 in 2007 to 6,929 in 2018. Overall, the rate of THA (86%) was far greater than other procedures. From 2007 to 2018, the percentage of THA among the procedures increased from 80% to 91%, while that of joint preservation procedures decreased from 11% to 5%. Conclusions: The total number of surgical procedures performed for ONFH increased and the percentage of THA increased, while that of joint preservation procedures decreased from 2007 to 2018 in South Korea.

Production of germline transgenic chickens expressing enhanced green fluorescent protein using a MoMLV-based retrovirus vector

Koo, Bon Chul,Kwon, Mo Sun,Choi, Bok Ryul,Kim, Jin-Hoi,Cho, Seong-Keun,Sohn, Sea Hwan,Cho, Eun Jung,Lee, Hoon Taek,Chang, Wonkyung,Jeon, Iksoo,Park, Jin-Ki,Park, Jae Bok,Kim, Teoan 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

The Moloney murine leukemia virus (MoMLV) -based retrovirus vector system has been used most often in gene transfer work, but has been known to cause silencing of the imported gene in transgenic animals. In the present study, using a MoMLV-based retrovirUs vector, we successfully generated a new transgenic chicken line expressing high levels of enhanced green fluorescent protein (eGFP). The level of eGFP expression was conserved after germline transmission and as much as 100μg of eGFP could be detected per 1 mg of tissue protein. DNA sequencing showed that the transgene had been integrated at chromosome 26 of the G₁and G₂generation transgenic chickens. Owing to the stable integration of the transgene, it is. now feasible to produce G₃generation of homozygous eGFP transgenic chickens that will provide 100% transgenic eggs. These results will help establish a useful transgenic chicken model system for studies of embryonic development and for efficient production of transgenic chickens as bioreactors.

Zero Voltage Transition PWM Two Phase Chopper for High Power Applications

Jung-Goo Cho,Ki-Yeon Joe,Hun-Hoi Koo,Sung-Chul Kim 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10

A new zero voltage transition (ZVT) PWM two-phase chopper is presented. To construct a ZVT two-phase chopper in a conventional way, it is required to add two auxiliary circuits. In the proposed converter, only one auxiliary circuit provides the zero voltage switching (ZVS) for main switches and diodes of both phases. So, the new converter is cost effective and attractive for high performance and high power density conversion applications where IGBTs are used as the main switches. Operation, features and characteristics are illustrated and verified on a 4 KW, 100 KHz IGBT based (MOSFET for the auxiliary switch) experimental circuit.

A multi-functional cable-damper system for vibration mitigation, tension estimation and energy harvesting

Jung, Hyung-Jo,Kim, In-Ho,Koo, Jeong-Hoi Techno-Press 2011 Smart Structures and Systems, An International Jou Vol.7 No.5

This paper presents a multi-functional system, consisting of a magnetorheological (MR) damper and an electromagnetic induction (EMI) device, and its applications in stay cables. The proposed system is capable of offering multiple functions: (1) mitigating excessive vibrations of cables, (2) estimating cable tension, and (3) harvesting energy for wireless sensors used health monitoring of cable-stayed bridges. In the proposed system, the EMI device, consisting of permanent magnets and a solenoid coil, can converts vibration energy into electrical energy (i.e., induced emf); hence, it acts as an energy harvesting system. Moreover, the cable tension can be estimated by using the emf signals obtained from the EMI device. In addition, the MR damper, whose damping property is controlled by the harvested energy from the EMI device, can effectively reduce excessive cable vibrations. In this study, the multi-functionality of the proposed system is experimentally evaluated by conducting a shaking table test as well as a full-scale stay cable in a laboratory setting. In the shaking table experiment, the energy harvesting capability of the EMI device for wireless sensor nodes is investigated. The performance on the cable tension estimation and the vibration mitigation are evaluated using the full-scale cable test setup. The test results show that the proposed system can sufficiently generate and store the electricity for operating a wireless sensor node twice per day, significantly alleviate vibration of a stay cable (by providing about 20% larger damping compared to the passive optimal case), and estimate the cable tension accurately within a 2.5% error.

Optimization of Acetabular Cup Abduction by Adjusting Pelvic Pitch

Jung-Wee Park,Jae-Hyun Park,Hong Seok Kim,Lee Young-Kyun,Kye-Young Han,Yong-Chan Ha,Kyung-Hoi Koo 대한정형외과학회 2024 Clinics in Orthopedic Surgery Vol.16 No.1

Background: The purposes of this study were to determine the accuracy of our cup positioning method and to evaluate the dislocation rate after total hip arthroplasty (THA). Methods: After positioning the patient in the lateral decubitus position on the operation table, an anteroposterior view of the hip was taken. The pelvic pitch was measured on the X-ray. A positive pitch was defined as the caudal rotation of the upper hemipelvis. Our target abduction of the cup was 43°. We used the cup holder to guesstimate the cup abduction. In a preliminary study, we found that the weight of the cup holder increased the pelvic pitch by 5°. Thus, the target abduction of the cup holder was calculated by a formula: 43° – pelvic pitch – 5°. During the cup insertion, the cup holder was anteverted to the calculated target according to the concept of combined anteversion. We evaluated 478 THAs (429 patients), which were done with the use of the method. Results: The mean cup abduction was 43.9° (range, 32.0°–53.0°) and the mean error of cup abduction was 2.4° (standard deviation [SD], 2.0°; range, 0.0°–11.0°). The mean cup anteversion was 28.5° (range, 10.0°–42.0°) and the mean error of cup anteversion was 6.7° (SD, 5.2°; range, 0.0°–27.6°). Of all, 82.4% of the cups (394 / 478) were within the safe zone: 30°–50° abduction and 10°–35° anteversion. During 2- to 5-year follow-up, no hip dislocated. Conclusions: Our adjusting method according to the pelvic pitch can be a reliable option for optimizing the cup abduction in THA.