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사무직 근로자의 수면의 질 및 직무스트레스와 우울과의 관련성
강미나,강수영,권수정,김현주,배재원,이보연,이예진,임의롬,정다영,조한솔 이화여자대학교 간호과학대학 2013 이화간호학회지 Vol.- No.47
Purpose: The purpose of this study was to understand the degree of depression, sleep quality, job stress and their association among office workers. Method: A self-administered questionnaire was distributed to 147 workers employed in 5 big enterprises, and 5 small and medium enterprises from October 21 to November 21, 2012. The questionnaires included socio-demographic and health-related characteristics, job-related characteristics, sleep quality, job stress (KOSS) and depression (CES-D). Result: Among all subjects, 23.1% was in the depression group (21 points and over in the CES-D score). Depressive level was positively correlated with job stress and quality of sleep. The adjusted odd ratio for the effects of sleep quality and job stress on depression significantly increased in the depression group compared to that of the normal group. Multiple regression analysis revealed that the following factors of influence had combined explanatory powers on depression: BMI, life satisfaction, quality of sleep, and job stress. Conclusion: The study revealed that complicated influences were exerted on the level of depression by variable factors, as well as socio-demographic characteristics, health-related characteristics, quality of sleep, and job stress. Specifically, the level of depression was influenced by the quality of sleep and job stress.
Plant Regeneration from Protoplast Isolated from Embryogenic Cells of Angelica gigas
Han-Sol Lee,So-Young Park,Jong-Eun Han,Jae-Heyuk Shin,Heyuk-Jun Kwon 한국원예학회 2021 한국원예학회 학술발표요지 Vol.2021 No.10
Protoplasts, cells lacking the polysaccharide wall, allow a technical complexity in cell-based study of plant. This study was carried out to investigate the effect of various factors on embryogenic cell-derived protoplast cultures to establish a reliable regeneration protocol in Angelica gigas. Firstly, the method of protoplast isolation was stablished by determination of enzyme solution. In next step, protoplast culture was conducted by investigation of the basal media, growth regulators, culture methods [liquid culture, sieving, thin-alginate layer (TAL) method]. Finally, micro-calli induced from protoplast cultures were transferred to hormone-free medium for the further development. High yield of the protoplast was successfully isolated from embryogenic cells, and those were classified into 4 groups according to their size. The highest frequency of cell division was achieved at 7 h of enzyme incubation treatment and the MS medium. The initial cell division was firstly observed in the Group 1(< 20 μm). As the culture period passed, the large groups gradually increased, and the small groups tend to decrease in number. The largest micro-calli were observed in 0.1 - 0.5 mg·L-1 2,4-D single treatments while the vigorous cell division was observed in the medium containing 1.0 mg·L<SUP>-1</SUP> 2,4-D, 0.5 mg·L<SUP>-1</SUP> kinetin. Among three culture method, the TAL showed the highest frequency of cell division compared to other methods. After somatic embryo induction and then shoot induction, the protoplast-derived embryos produced plantlets with high efficiency from TAL. Somatic embryos developed into well-rooted plants on hormone-free MS medium. In study, high frequency cell divisions were occurred from small in size, small vacuoles and cytoplasm-rich protoplasts, and these protoplasts were considered to embryonic stem cells. In future studies, we intend to analyze the differential gene expression to identify the protoplast types and molecular changes during protoplast recovery and development into plants.
Han Sol Kim,Hongliang Li,Hye Won Kim,Sung Eun Shin,Mi Seon Seo,Jin Ryeol An,Kwon-Soo Ha,Eun-Taek Han,Seok-Ho Hong,Il-Whan Choi,Grace Choi,Dae-sung Lee,Won Sun Park 대한생리학회-대한약리학회 2017 The Korean Journal of Physiology & Pharmacology Vol.13 No.1
We investigated the inhibitory effect of escitalopram, a selective serotonin reuptake inhibitor (SSRI), on voltage-dependent K<sup>+</sup> (Kv) channels in freshly separated from rabbit coronary arterial smooth muscle cells. The application of escitalopram rapidly inhibited vascular Kv channels. Kv currents were progressively inhibited by an increase in the concentrations of escitalopram, suggesting that escitalopram inhibited vascular Kv currents in a concentration-dependent manner. The IC<sub>50</sub> value and Hill coefficient for escitalopram-induced inhibition of Kv channels were 9.54±1.33 µM and 0.75±0.10, respectively. Addition of escitalopram did not alter the steady-state activation and inactivation curves, suggesting that the voltage sensors of the channels were not affected. Pretreatment with inhibitors of Kv1.5 and/or Kv2.1 did not affect the inhibitory action of escitalopram on vascular Kv channels. From these results, we concluded that escitalopram decreased the vascular Kv current in a concentration-dependent manner, independent of serotonin reuptake inhibition.
공동주택의 연간 난방부하 예측을 위한 단위동법의 적정성
권한솔(Kwon Han-Sol),최원준(Choi Won-Jun),신지은(Shin Ji-Eun),곽노열(Kwak Ro-Yeul),허정호(Huh Jung-Ho) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
To date, heating load of apartment building has been generally evaluated using a houshold unit method having inherent limitations of demanding both tedious effort of modeling and computation time especially for a large apartment complex. On the other hand, an apartment building unit method could calculate the heating load as a whole with preprocessing simplifications. As the existing study of an apartment building unit method is limited to the peak design heating load calculation, this study is to extend the method to estimating annual heating load using EnergyPlus program. The results show that the method dramatically reduces computational time and modeling effort as well.
사무용 건물의 자연채광 도입에 대한 국내ㆍ외 친환경 건축물 인증제도의 비교 분석 연구
권한솔(Kwon Han-Sol),김선욱(Kim Sun-Uk),엄현용(Eom Hyeon-Yong),정인영(Jung In-Yung),허정호(Huh Jung-Ho) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
The GBCC(Green Building Certification Criteria) system has been in effect since 2001, which has various assessment items according to the classification of building use. Nevertheless, the criteria related with daylighting has not been quantified yet as compared to the other indoor environmental factors in the GBCC, and even the established measure for interior lighting energy saving also have not existed. Therefore, this study is in progress as follows. First, the current state of day lighting-related items in the GBCC was examined. Second, the items were compared with the counterparts in the other foreign systems, such as LEED and CASBEE. Third, in the near future, this study plans to suggest the environmental-friendly certification criteria of daylighting utilization for office buildings.