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문보배,이윤석 지역사회학회 2023 지역사회학 Vol.24 No.2
In this study, we compare the commuting times and means of wives and husbands in dual-earner couples using the data from the Korean Time Use Survey in 2019. Frist, we find that commuting time is shorter for wives than for husbands, and more pronounced differences were revealed in couples with children. Second, the proportions of using the car is higher for husbands, suggesting that husbands have better mobility resources than wives. Third, regression results indicate that wives with their own or spouses’ income levels higher, or with preschool child and long working hours, have less commuting time. Our findings propose that the household responsibility hypothesis is still valid. This study suggests that it is necessary to consider the vehicle system for couples along with the establishment of a dense public transportation network. In order to guarantee high-quality employment opportunities for married women, households and childcare policies for dual-earner couples must precede above all else.
무혈청 배지와 우태아 혈청의 인간조혈모세포에 대한 유전자 전달에 미치는 효과 비교분석
문누리 ( Noo Ry Moon ),강영주 ( Young Ju Kang ),박보배 ( Bo Bae Park ),오일환 ( Il Hoan Oh ) 한국조직공학·재생의학회 2007 조직공학과 재생의학 Vol.4 No.1
High efficiency gene transfer into hematopoietic stem cells(HSCs) is essential for application of HSCs for gene therapeutic trials as well as manipulation of the HSCs. Here we examined the influence of fetal bovine serum(FBS) in the medium during retroviral gene transduction of marker gene(GFP; green fluorescent protein) into human CD34+cells in comparison to serum substitution medium(SFM). First, during the ex vivo culture of CD34+ cells for 5 days, comparable level of expansion in total CD34+ cells and colony forming cells were observed between FBS containing medium and SFM. Similarly, total engraftement level achieved after xenotransplantation of cultured cells into Non-diabetic severe combined immune deficiency(NOD/SCID) were comparable for both medium conditions. In contrast the virus protecting effect was significantly higher for FBS containing medium as determined by number of infective particles dervied from producer cells. When retroviral gene transfer into purified CD34+ cells were compared, overall gene transfer efficiency was higher for FBS contaiing medium(50±8.1%) than SFM(25±6.0%)(p=0.009). Similarly gene transfer efficency into colony forming cells and CD34+ cells were significantly higher for FBS group as compared to SFM group. Taken together, these results show that while SFM can preserve CD34+ to a comparable level, FBS medium can protect viral particle to cause a more efficent gene transfer into hematopoietic progenitor cells.
RuO<sub>2</sub>를 양전극으로 사용한 무격막 전해셀에서의 이산화염소수 제조
권태옥,박보배,노현철,문일식,Kwon, Tae Ok,Park, Bo Bae,Roh, Hyun Cheul,Moon, Il Shik 한국공업화학회 2009 공업화학 Vol.20 No.3
$RuO_2/Ti$를 양전극으로 사용한 무격막 전해셀(un-divided electrochemical cell) 시스템에서의 이산화염소수($ClO_2$) 제조 연구를 수행하였다. 이산화염소의 전구체로는 아염소산나트륨($NaClO_2$)이 사용되었으며, 무격막 전해셀에서 전구체 용액의 전해셀 주입유량, 전구체 용액 초기 pH, 아염소산나트륨과 전해질인 염화나트륨의 주입농도 그리고 전류밀도(current density)가 생성된 이산화염소수의 농도 및 pH에 미치는 영향을 조사하였다. 생성된 이산화염소수의 농도와 pH는 초기 전구체 용액의 pH와 전해셀 주입유량에 큰 영향을 받는 것으로 나타났으며, 전해질로 사용된 염화나트륨은 전해질로서의 역할 뿐만 아니라 이산화염소의 전구체로도 작용함을 알 수 있었다. 이산화염소수 제조를 위한 무격막 전해셀에서의 전구체용액의 최적 주입유량은 90 mL/min, 전구체 용액의 초기 pH는 2.3, 아염소산나트륨 주입농도는 4.7 mM, 염화나트륨 주입농도는 100 mM 그리고 전류밀도는 $5A/dm^2$로 나타났으며, 이때 발생된 이산화염소수의 pH는 약 3, 이산화염소 농도는 약 350 mg/L이었다. Generation of chlorine dioxide ($ClO_2$) was studied by the un-divided electrochemical cell system using $RuO_2$ anode material. Sodium chlorite ($NaClO_2$) was used as a precursor compound of chlorine dioxide. Effect of various operating parameters such as feed solution flow rate, initial solution pH, $NaClO_2$ and NaCl conc., and applied current density on the produced chlorine dioxide concentration and solution pH were investigated in un-divided electrochemical cell system. Produced chlorine dioxide concentration and solution pH were strongly depends on the initial solution pH and feed solution flow rate. Sodium chloride (NaCl) was not only good electrolyte, it was also used as a raw material of chlorine dioxide with $NaClO_2$. Observed optimum conditions were flow rate of feed solution (90 mL/min), initial pH (2.3), $NaClO_2$ concentration (4.7 mM), NaCl concentration (100 mM), and current density ($5A/dm^2$). Produced chlorine dioxide concentration was around 350 mg/L and solution pH was around 3.
UV, H<sub>2</sub>O<sub>2</sub>, 오존을 이용한 고급산화공정에서의 테레프탈산 제조공정 폐수 처리 : 유기물 및 색도제거 연구
권태옥,박보배,문일식,Kwon, Tae-Ouk,Park, Bo-Bae,Moon, Il-Shik 한국화학공학회 2007 Korean Chemical Engineering Research(HWAHAK KONGHA Vol. No.
UV/H_2O_2$, $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ 공정을 이용한 테레프탈산 제조공정 폐수의 COD 및 색도제거 연구를 수행하였다. UV/H_2O_2$, $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ 공정에서의 COD 제거율은 각각 10, 48, 56, 63%, 색도 제거율은 $UV/H_2O_2$ 공정이 80%, $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ 공정은 모두 99% 이상 효과적으로 제거되는 것으로 나타났다. COD 및 색도 제거율이 가장 우수한 $UV/H_2O_2/O_3$ 공정에서 테레프탈산 제조공정 폐수의 주요 유기물 성분인 테레프탈산, 이소프탈산 그리고 벤조산 성분은 120분 이내에 모두 99% 이상 제거되었다. 또한 $UV/H_2O_2$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ 공정에서의 최적 $H_2O_2$ 주입농도는 각각 0.5M, 25 mM 그리고 5 mM로 나타나, UV와 $H_2O_2$를 오존산화 공정에 조합함으로써 유기물 제거율 향상과 함께 사용된 $H_2O_2$의 저감효과를 동시에 얻을 수 있었다. UV/H_2O_2$, $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ processes were tested for the removal of COD and color from terephthalic acid wastewater. COD removal efficiencies were 10, 48, 56, 63% in the $UV/H_2O_2$, $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ process respectively. Color removal efficiency of $UV/H_2O_2$ process was 80% and $O_3$, $O_3/H_2O_2$, $UV/H_2O_2/O_3$ processes were almost more than 99%. Terephthalic acid, isophthalic acid and benzoic acid were completely destructed in terephthalic wastewater within 120 min by $UV/H_2O_2/O_3$ process and shows high COD and color removal efficiencies. The optimum concentration of $H_2O_2$ dosage was found to be 0.5 M, 25 mM and 5 mM for $UV/H_2O_2$, $O_3/H_2O_2$ and $UV/H_2O_2/O_3$ processes respectively, Organic destruction efficiency was enhanced and also reducing the consumption of $H_2O_2$ dosage by combining UV, $H_2O_2$ and $O_3$ process.
귀 지압이 간호사의 두통과 일상생활 두통 영향에 미치는 영향
강혜원,김자운,김은미,문보배,정진영,이은진,Kang, Hye-Won,Kim, Ja-Woon,Kim, Eun-Mi,Moon, Bo-bae,Jung, Jin-Young,Lee, Eun-Jin 경희대학교 동서간호학연구소 2023 동서간호학연구지 Vol.29 No.1
Purpose: The purpose of this study was to examine the effects of auricular acupressure on headaches and its impact on daily activities in nurses. Methods: The design of this study was a randomized controlled trial. Data were collected from April 1 to April 14, 2022. Nurses suffering from headaches were recruited from a hospital in a city. Twenty nurses were assigned to the experimental group and 20 nurses to the control group. The experimental group received auricular acupressure for 2 weeks, and the control group was put on the waiting list. Results: Auricular acupressure reduced headache over 2 weeks compared to the control group. Auricular acupressure reduced the effect of headache on daily activities compared to control group. Headache effect on daily activities in the control group did not change. Conclusion: Based on the results of this study, it is suggested to repeat the study using various combinations of acupressure points other than the acupressure points used in this study or to use participants other than nurses.