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- 저자 : Min Gyeong Jo (검색결과 182 건)
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컴퓨터 작업 시 의자 등받이 위치가 근육 활성도에 미치는 영향
김민우,변승진,이경은,정소영,조주영,최원자,최찬양,김경 대구대학교 특수교육재활과학연구소 2011 再活科學硏究 Vol.29 No.1
이 연구는 컴퓨터 작업시 의자 등받이 위치가 근육활성도에 미치는 영향을 알아보기 위해 36명의 근골격에 문제가 없는 성인 남녀가 참가하였으며 대상자들은 등받이가 뒤에 있는 의자와 등받이가 없는 의자, 등받이가 앞에 있는 우리들 의자를 무작위로 배정하고 동일한 컴퓨터 작업을 실시하게 하였다. 실험 중, 표면근전도기를 사용하여 의자에 따른 위등세모근, 머리널판근 그리고 척주세움근의 근활성도 변화를 측정하였다. 이 연구의 결과를 종합해보면 등받이가 앞에 있는 의자는 허리 근육의 부담을 줄이지만 목근육에 부담이 늘어나고 등받이가 뒤에 있는 의자와 없는 의자는 허리근육에는 다소 무리가 가지만 목근육에는 부담이 덜하다는 것을 알 수 있었다. 이러한 결과로 환자의 증상에 다라 컴퓨터 작업을 하는 동안 의자 등받이의 위치를 조절하여 치료에 도움이 될 수 있다고 생각되어진다. Objective : In this study, we checked and observed people's change of body muscle and muscle activity who do computer work on different chairs. We set three kind of chairs which one is a stool and another one is the back is fixed, and the other one is the back is fixed in front of chair. Subject : Accounting for 36 health men and women, we divided these people to 3 groups and put them on the three cases(position 1, position 2, position 3). We measured muscle activity of upper trapezius, Splenius Cervics, Erector Spinae from the groups by using surface electromyogram system. Methods : The standard of the electromyogram was 'reference voluntary contraction', and we carried out 'one way anova' to compare muscle activity of three groups. Results : In position 1, reference voluntary contraction of upper trapezius muscle activity was 123.2821%, Splenius Cervics was 141.7526%, and Erector Spinae was 254.5233%. In position 2, reference voluntary contraction of upper trapezius muscle activity was 132.9395%, Splenius Cervics was 141.7526%, and Erector Spinae was 246.6540%. In position 3, reference voluntary contraction of upper trapezius muscle activity was 190.6487%, Splenius Cervics was 270.2332%, and Erector Spinae was 182.1021%. Both upper trapezius and Splenius Cervics muscle activity of position 3 group was higher than the others groups. In position 1 group, Erector Spinae muscle activity was hight than the other groups. And either was position 2 group's(p<0.05). Conclusion : Therefore the chair which is the back is fixed in front is more comfortable for waist muscle but it's not good for neck. And the other chairs are better in waist muscle but not in neck muscle. So far, when we do a computer work, it's prefer to sit on the group 1&2's chairs to reduce neck muscle's stress and sit on group 3's chair to reduce waist muscle's stress.
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김은경 ( Eun-gyeong Kim ),김민경 ( Min-kyung Kim ),권현애 ( Hyun-ae Kwon ),윤도경 ( Do-kyung Youn ),구정헌 ( Jeong-heon Koo ),박소연 ( So-yeon Park ),이희근 ( Hui-geun Lee ),조명희 ( Myeong-hui Jo ),하도윤 ( Do-yun Hah ),김철호 ( 한국동물위생학회(구 한국가축위생학회) 2018 韓國家畜衛生學會誌 Vol.41 No.3
Salmonella Enteritidis (S. Enteritidis) are found in animals, humans, and environment. In addition, S. Enteritidis draws attention to the public health concerns due to carriage of antibiotic resistance traits. For these reasons, the prevalence and antibiotic resistance patterns of S. Enteritidis are significant issues with regard to public health. To address this issues, a total of 24 strains of S. Enteritidis from 164 samples collected from several slaughterhouses in Gyeong-Nam province in order for antibiotic resistance profiles. Subsequently, we characterized the genotyping by random amplification polymorphic DNA (RAPD)-PCR. As a result, very high level of resistance to protein synthesis inhibition antibiotics and most isolates were susceptible to others. Six random primers were used for RAPD-PCR to reveal genotypes of S. Enteritidis isolates. One of the primer, P1245, generated 147 distinct RAPD-PCR fragments ranging from 400∼3000 bp. The number of RAPD-PCR products ranged from 4 to 8 for this primer. The RAPD-PCR fragments could be placed these strains into 3 subgroups and 2 classes by UPGMA cluster analysis. Interestingly, several S. Enteritidis that isolated from different slaughterhouses showed same genotype. These results showed only limited genetic variation among the isolates, those were grouped into a few different patterns of antibiotic resistance.
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MTT비색법에 의한 결핵균 30-kDa항원이 임파구 증식에 미치는 영향
백태현,김민경,박정규,김화중,조은경,최대경 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.1
The cell mediated immune response appears to result from the specific recognition of an antigen. by T lymphocytes. It has been well recognized that T cell play an important roles in the induction of tuberculin hypersensitivity and immunity to tuberculosis. In order to evaluate effect on T lymphocyte proliferative response to purified 30-kDa antigen from Mycobacterium tuberculosis, stimulation effects of peripheral blood lymphocytes with 30-kDa antigen, crude antigen and PHA were measured by MTT colorimetric assay. Three groups of healthy subjects, representing PPD(+), PPD() and PPD(-) persons, were investigated. The proliferative response to 30-kDa antigen were elicited the plateau at concentration of 20 to 0.1㎍/ml, crude antigen showed rapid reduction as decreasing the concentration of antigen, for the PPD(+) person. Both antigens, at concentration of <1㎍/ml, failed to stimulate lymphocytes of the PPD(-) person. Therefore the concentration of 30-kDa antigen to induce optimal stimulation was 1㎍/ml. The lymphocyte proliferation to 30-kDa antigen and crude antigen were significantly increased in PPD(+) group when compared to those in PPD(-) group, but PHA response was no significant difference. These results suggest that 30-kDa antigen could stimulate lymphocyte from PPD(+) population and MTT colorimetric assay could be applied to assess proliferative response of lymphocyte.
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Jo, Min Gyeong,An, Duck Soon,Lee, Dong Sun Korea Society of Packaging Science and Technology 2020 한국포장학회지 Vol.26 No.1
Al-laminated packaging film incorporating ascorbic acid or tocopherol at inner food contact layer was tested in the potential to improve antioxidative preservation of powdered infant formula under CO<sub>2</sub>-enriched atmosphere. Product of 200 g was packaged with the packaging film containing 0.3% antioxidant in sealant layer of low density polyethylene and stored at 30℃ for 286 days with periodic measurement of package atmosphere and product's quality attributes. The CO<sub>2</sub>-flushed package resulted in shrinkage of tight contact between the product and the film not allowing gas sampling of package atmosphere after 140 days. Package of tocopherol-incorporated film allowed some ingress of oxygen after 112 days presumably due to its weakening of heat-seal area. The increased oxygen concentration in the tocopherol-added film package led to the concomitant increase of peroxide value, an index of lipid oxidation. On the other hand, packaging of ascorbic acid-added film pouch could suppress lipid oxidation marginally in consistent manner compared to control package without any antioxidant.
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Min Gyeong Jo,Duck Soon An,Dong Sun Lee 한국포장학회 2020 한국포장학회지 Vol.26 No.1
Al-laminated packaging film incorporating ascorbic acid or tocopherol at inner food contact layer was tested in the potential to improve antioxidative preservation of powdered infant formula under CO2-enriched atmosphere. Product of 200 g was packaged with the packaging film containing 0.3% antioxidant in sealant layer of low density polyethylene and stored at 30oC for 286 days with periodic measurement of package atmosphere and product’s quality attributes. The CO2-flushed package resulted in shrinkage of tight contact between the product and the film not allowing gas sampling of package atmosphere after 140 days. Package of tocopherol-incorporated film allowed some ingress of oxygen after 112 days presumably due to its weakening of heat-seal area. The increased oxygen concentration in the tocopherol-added film package led to the concomitant increase of peroxide value, an index of lipid oxidation. On the other hand, packaging of ascorbic acid-added film pouch could suppress lipid oxidation marginally in consistent manner compared to control package without any antioxidant.
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Min Gyeong Jo,Jung Min Park,Dahye Yun,Jeong Sun Ahn,Kwang Il Kwon,Hye-Young Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
This study was performed to compare the dietary behavior of young single-person households (SPHs) and multiple-person households (MPHs) groups. In our analysis, we included 5,664 young adults aged 19-39 years who had participated in the Korea National Health and Nutrition Examination Survey (KNHANES) from 2016 to 2019. The frequencies of skipping breakfast and eating out were higher in SPHs than in MPHs (P<0.001). The intake of processed foods was higher in SPHs than in MPHs (1,000.0vs 901.3 g/day), while consumption of fruit and other unprocessed food was low. Among processed foods, the intake of prepared meals, beverages, and oils was significantly higher. In addition, regarding nutrients intake per 1,000kcal, low intake of vitamin C and fiber was observed in SPHs compared with the MPHs, whereas fat intake was high in SPHs. This study shows that young SPHs tend to have poorer nutritional behaviors compared to MPHs. These results imply that nutrition education programs based on the data from this study need to be developed to promote better health behaviors among young SPHs. [This research was supported by a grant (21161MFDS064) from Ministry of Food and Drug Safety in 2021]
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Min Gyeong Jo,Duck Soon An,Dong Sun Lee 한국포장학회 2018 한국포장학회지 Vol.24 No.1
Powdered infant formula is susceptible to oxidation in the presence of oxygen. Even though the product is usually packaged in nitrogen atmosphere, the oxygen ingress through the package layer may occur in case of flexible pouches and affects the oxidation of the product. O2 barrier of the package is thus important variable to protect the product from oxidative deterioration. O2 barrier property was investigated for aluminum-laminated small pillow packs of 3.5×17.5 cm. Storage temperature and combination of primary and secondary packages were evaluated as variables affecting the barrier for conditions of empty pouch flushed with nitrogen. Apparent oxygen transmission rate of the primary package exposed to air was 2.32×10-3 mL (STP) atm-1 d-1 at 30°C and its temperature dependence could be explained by activation energy of 28.5 kJ mol-1 in Arrhenius relationship. The additional secondary package of nylon/PE film containing 20 primary packages was ineffective in modulating package O2 transmission and was only marginally helpful when combined with oxygen scavenger. The same was true in suppressing the product oxidation when the primary package was filled with 14 g of the formula.
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Jo, Min Gyeong,An, Duck Soon,Lee, Dong Sun Korea Society of Packaging Science and Technology 2018 한국포장학회지 Vol.24 No.1
Powdered infant formula is susceptible to oxidation in the presence of oxygen. Even though the product is usually packaged in nitrogen atmosphere, the oxygen ingress through the package layer may occur in case of flexible pouches and affects the oxidation of the product. $O_2$ barrier of the package is thus important variable to protect the product from oxidative deterioration. $O_2$ barrier property was investigated for aluminum-laminated small pillow packs of $3.5{\times}17.5cm$. Storage temperature and combination of primary and secondary packages were evaluated as variables affecting the barrier for conditions of empty pouch flushed with nitrogen. Apparent oxygen transmission rate of the primary package exposed to air was $2.32{\times}10^{-3}mL\;(STP)\;atm^{-1}\;d^{-1}$ at $30^{\circ}C$ and its temperature dependence could be explained by activation energy of $28.5kJ\;mol^{-1}$ in Arrhenius relationship. The additional secondary package of nylon/PE film containing 20 primary packages was ineffective in modulating package $O_2$ transmission and was only marginally helpful when combined with oxygen scavenger. The same was true in suppressing the product oxidation when the primary package was filled with 14 g of the formula.
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