난임 부부의 배우자 지지와 난임 스트레스의 관계에서 자아존중감의 매개효과: 자기효과와 상대방효과를 중심으로

이가연,김성희,Lee, Ka Yeon,Kim, Seong Hee 대한가정학회 2021 Human Ecology Research(HER) Vol.59 No.4

The purpose of this study was to examine actor and partner effects among infertile couples in determining whether self-esteem affects the degree of infertility-related stress via perceived spousal support. The sample comprised 219 couples who experienced infertility, each of whom completed an online survey. To analyze the data, descriptive statistics, t-test, correlation analysis and APIM (Actor-Partner Interdependence Model) were performed using SPSS 25.0 and Mplus 7.3 program. The main results were as follows. First, the actor effect of spousal support on self-esteem was significant in both husbands and wives. Second, the actor effects of spousal support on infertility-related stress and self-esteem on infertility stress were significant only in husbands. Third, in the association between husbands' and wives' spousal support and infertility-related stress, three mediating pathways via husband's self-esteem were found to be significant. Based on these results, the necessity for a couple-level analysis in infertility research, psycho-emotional interventions for infertile couples, and implications for follow-up studies were discussed.

스케일링 작업 시 치위생과 학생과 치과위생사의 경추관절 3D 동작 분석

이가연 ( Ka-yeon Lee ),김지희 ( Ji-hee Kim ) 대한예방치과·구강보건학회 2021 大韓口腔保健學會誌 Vol.45 No.3

Objectives: This study aimed to objectively evaluate factors associated with musculoskeletal disorders by measuring the range of motion of the cervical spine. Using three-dimensional motion analysis, the degree of flexion, lateral flexion and rotation were compared between dental hygiene students and dental hygienists during dental scaling. Methods: Muscle activity in the range of motion of the cervical vertebrae was measured in 35 dental hygiene students and 15 dental hygienists while scaling. Data were collected and processed using the biofeedback exercise function of the 2EM (4D-MT, Relive, Gimhae, Korea), an electromyography measuring device. A three-dimensional motion analysis sensor was attached to the subject’s right external auditory canal, and the joint angle was measured at 20 Hz. Results: Cervical flexion (15°-45°) was measured higher in dental hygienists than in students. Cervical flexion within 15° of the normal range was higher in students than in dental hygienists. For cervical lateral flexion of 15°-45° and >45°, dental hygienists measured higher than students. In contrast, cervical lateral flexion within 15° of the normal range was higher among students than dental hygienists. Cervical rotation (15°-45°) was measured higher in dental hygienists than in students. No dental hygienist’s cervical rotation measured over 45°, and more students reached the 45° measurement than dental hygienists. Conclusions: Flexion, lateral flexion, and rotation were measured higher in dental hygienists then dental hygiene students. The results indicated that the range of motion of the cervical spine in the two groups exceeded the average scores for normal flexion, lateral flexion, and rotation by more than 15°, thereby increasing the risk of musculoskeletal disorders.

연령, 성별, 종교에 따른 결혼가치관과 성가치관의 차이

이가연 ( Lee Ka Yeon ),전혜정 ( Jun Hey Jung ),주수산나 ( Joo Susanna ),김종우 ( Kim Jongwoo ) 대한가정학회 2019 대한가정학회 춘계학술대회 자료집 Vol.2019 No.0

비디오 촬영 기법을 이용한 치과위생사의 목 부위 근골격계질환 주요 위험요인 평가

이가연 ( Ka-yeon Lee ),전진호 ( Jin-ho Chun ) 대한예방치과·구강보건학회 2017 大韓口腔保健學會誌 Vol.41 No.4

Objectives: Work-related musculoskeletal disorder (WMSD) of the neck is a frequent health problem in dental hygienists. This study was conducted to assess the risk factors of neck musculoskeletal disorder (neck MSD) using video recording. Methods: The subjects were 50 currently working dental hygienists who agreed to participate in this study. A standardized questionnaire about WMSD (NIOSH/KOSHA) was distributed and video recording for neck posture and motion was performed between August and October 2012. The video recording was performed for 5 minutes using the reflective marker attachment on the 7th cervical vertebra. Major observation points included neck flexion angle, number of flexions, and length of static work when performing scaling and prosthetic procedures. Data were analyzed using MedCalc (ver 12.3.0, Mariakerke, Belgium), and the risk factors for neck MSD were assessed using simple and multiple variate analysis. Results: The mean age and work experience of the subjects were 27.9 years and 5 years respectively. The prevalence of neck MSD symptoms that met NIOSH/KOSHA’s criteria was 48%. The mean angle of neck flexion was 54.6°, mean maximum angle of flexion was 64.8°, and the mean time of static posture was 4.8 minutes during the 5 minutes recording interval. In the multiple logistic regression analysis adjusted by career, daily work time, and posture, the prevalence of neck MSD symptoms increased by 1.47 times (95% CI=0.24-9.48) with flexion >45°, and by 4.90 times (95% CI=0.91-26.4) when a static posture was preserved for >4.8 minutes Conclusions: The measured angle of flexion and time of preserved static posture identified further serious than expected. Therefore, to reduce the risk of neck MSD, reasonable and practically applicable guidelines to correct neck bending and tilting, especially to relax the long static posture associated with flexion, should be prepared.

난임 부부의 배우자 지지와 난임 스트레스의 관계에서 자아존중감의 매개효과: 자기효과와 상대방효과를 중심으로

이가연 ( Ka Yeon Lee ),김성희 ( Seong Hee Kim ) 대한가정학회 2021 Human Ecology Research(HER) Vol.59 No.4

The purpose of this study was to examine actor and partner effects among infertile couples in determining whether self-esteem affects the degree of infertility-related stress via perceived spousal support. The sample comprised 219 couples who experienced infertility, each of whom completed an online survey. To analyze the data, descriptive statistics, t-test, correlation analysis and APIM (Actor-Partner Interdependence Model) were performed using SPSS 25.0 and Mplus 7.3 program. The main results were as follows. First, the actor effect of spousal support on self-esteem was significant in both husbands and wives. Second, the actor effects of spousal support on infertility-related stress and self-esteem on infertility stress were significant only in husbands. Third, in the association between husbands’ and wives’ spousal support and infertility-related stress, three mediating pathways via husband’s self-esteem were found to be significant. Based on these results, the necessity for a couple-level analysis in infertility research, psycho-emotional interventions for infertile couples, and implications for follow-up studies were discussed.

국내 자생 엽채류 번행초의 우수 유전자원 기초 선발

김인경(In-Kyung Kim),이가연(Ka Yeon Lee),김성기(Sung-Ki Kim),김병운(Byung-Woon Kim),최원영(Weon-Young Choi),이긍주(Geung-Joo Lee) 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.4

Recent development and enlargement of reclaimed lands along the sea shores required to explore alternatives to existing crops, which are suitable to grow well and to declare higher profits. The objectives of this study were to investigate yield-related parameters for development of new leafy vegetables, and to screen some candidates among New Zealand spinach genotypes which were collected in Korea. Initially all the collected genotypes were grown for 7 weeks in a greenhouse of the experiment field in Chungnam National University, and then transplanted into the field to measure morphological or physiological parameters (plant height, branch number, stem diameter, chlorophyll content, and maximum canopy diameter), and yield-related parameters (leaf number, leaf length, leaf width, fresh weight and dry weight). Those parameters were quantitatively measured at 1, 5 or 9 weeks after transplanting (WAT). Parameters exhibiting statistically significant difference among the accessions were plant height, branch number, maximum canopy diameter, chlorophyll content, and leaf length. In contrast to highly correlated parameters with fresh and dry weight obtained in salt-affected soil in the earlier report, fresh weight was correlated significantly with leaf length (r=0.72), leaf width (r=0.64), and canopy diameter(r=0.66), while dry weight was correlated significantly with plant height (r=0.46), leaf length (r=0.72), leaf width (r=0.73), fresh weight (r=0.79), chlorophyll content (r=0.47), and canopy diameter (r=0.87). Based on the significantly correlated with yield parameters, the candidate accessions which were ranked in top statistical groups include CNU06A01, CNU06A13, CNU06A26, CNU06A35, CNU06A38, and CNU06A55. In order to be cultivated in reclaimed lands, it is necessary to screen out salt tolerant accessions among the above high-yielding genotypes.

GC-MS/MS를 이용한 Bifenazate diazene의 잔류농약 분석법 개발

김효영 ( Hyoyoung Kim ),임채욱 ( Chaeuk Lim ),이가연 ( Ka-yeon Lee ),홍수민 ( Sumin Hong ),조현정 ( Hyunjeong Cho ),김동호 ( Dong-ho Kim ),오상균 ( Sang-guen Oh ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

We developed the method for Bifenazate diazene for vitalization of export of domestic agricultural products. Korea’s major exporting countries are U.S.A, Japan, Hongkong and so on. These countries enforce Positive list system or Zero tolerance as one of technical barriers in trade. Residue definition of Bifenazate in Korea is the only bifenazate. But residue definition for bifenazate in several countries is bifenazate as the sum of bifenazate and its metabolite, bifenazate diazine. So this should be taken into account when analyzed. Our multiresidue method has been using mass spectrometry, and bifenazate was analyzed by the multiresidue method with GC-MS/MS in our previous study. To efficiently analyze bifenazate and its metabolite at once, we used the multiresidue method with GC-MS/MS. In the step of QuEChERS extraction added an analytes protectant(AP), Bifenazate diazine is converted to bifenazate. A method for Bifenazate diazine has been developed using the QuEChERS EN method with gas chromatography-tandem mass spectrometry (GC-MS/MS) in 5 agricultural commodities (Apple, Paprika. Pear, Strawberry, and Tomato). To validate the method developed, all commodities were spiked with two concentration levels of 10 and 100 μg/kg. The recoveries were within 70~120% with the relative standard deviation (RSD) of 10%, and the limit of quantification (LOQ) of methods was below 10 μg/kg, and the correlation coefficients (R2) of matrix-matched standards were > 0.99. The recoveries, LOQ, and repeatability achieved, meet the criteria of tolerance level monitoring of these pesticides in the agricultural export product.

염생식물 번행초의 EST 기반 Simple Sequence Repeat(SSR) Marker 특성 분류

최영인(Young In Choi),김인경(In Kyung Kim),이가연(Ka Yeon Lee),이긍주(Geung-Joo Lee) 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.5

세엽 한국들잔디 변이체 식별을 위한 SCAR 마커 개발

정성진(Sung Jin Chung),박수정(Su Jeong Park),최영인(Young In Choi),김인경(In-Kyung Kim),이가연(Ka-Yeon Lee),김헌중(Hun- Joong Kim),이긍주(Geung-Joo Lee) 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

Polymorphic bands of two fine-leaf zoysiagrass mutants (CNU 70-1, CNU 70-2) induced via a gamma-ray irradiation on seeds of Zoysia japonica were obtained by using randomly amplified polymorphic DNA (RAPD) primers. The genotype-specific fragments were then converted into PCR-based sequence characterized amplified region (SCAR) markers, which are now amenable to detecting them among other zoysiagrass species widely noticeable in Korea. The CNU 70-1-specific primer set amplified about 900 bp successfully, while the CNU 70-6 marker produced the expected 1,500 bp band, by which those markers were nominated by CNU 70-1_900 and CNU 70-6_1500 SCARs, respectively. The developed SCAR markers can be an applicable tool in sod industry where illegal appropriation hampers breeder’s right and profits due to the turfgrass plant vegetatively propagating.

수확 후 산채류의 미생물 제어를 위한 이산화염소수와 유기산 및 Blanching 병합 처리

강지훈(Ji Hoon Kang),박신민(Shin Min Park),김현규(Hyun Gyu Kim),손현정(Hyun Jung Son),이가연(Ka Yeon Lee),강길남(Kil-Nam Kang),박종태(Jong Tae Park),송경빈(Kyung Bin Song) 한국식품영양과학회 2016 한국식품영양과학회지 Vol.45 No.2

수확 후 산채류의 미생물학적 안전성을 확보하기 위해 선정된 산채류인 취나물과 곤드레에 이산화염소수와 유기산 용액 병합 처리 및 이산화염소수, 유기산 용액, blanching 병합처리 후 미생물 제어 효과를 비교 분석하였다. 50 ppm 이산화염소수와 0.5% citric acid 용액의 병합 처리는 취나물과 곤드레의 총 호기성 세균 수를 2.80~3.64 log CFU/g, 효모 및 곰팡이 수는 2.02~2.67 log CFU/g 감소시켰다. 50 ppm이산화염소수와 0.5% fumaric acid 용액의 병합 처리 후 총 호기성 세균 수는 대조구와 비교하여 3.62~3.82 log CFU/g 감소하였으며, 효모 및 곰팡이의 경우에는 2.47~3.02 log CFU/g 만큼 감소하여 이산화염소수와 citric acid 용액의 병합 처리보다 fumaric acid 용액과의 병합 처리가 더 효과적인 병합 처리 조건이라고 생각된다. 이산화염소수와 fumaric acid 병합 처리 후 blanching 처리된 취나물의 총 호기성 세균 수는 대조구보다 5.12 log CFU/g 더 낮게 검출되었으며, 효모 및 곰팡이는 검출되지 않았다. 곤드레의 경우에도 효모 및 곰팡이는 검출되지 않았으며, 총 호기성 세균 수는 대조구와 비교하여 4.59 log CFU/ g 감소하였다. 따라서 본 연구 결과 이산화염소수와 유기산 용액 전처리 후 blanching 병합 처리가 산채류의 미생물학적 안전성을 확보하는 가장 효과적인 방법이라고 판단된다. To improve the microbiological safety of wild vegetables after harvest, Aster scaber and Cirsium setidens Nakai were treated with combinations of 50 ppm aqueous chlorine dioxide (ClO₂)/0.5% citric acid or fumaric acid, and 50 ppm ClO₂/0.5% fumaric acid/blanching at 90°C for 2 min. Combined treatment of 50 ppm ClO₂ and 0.5% citric acid reduced populations of total aerobic bacteria, yeast, and molds in Aster scaber and Cirsium setidens Nakai by 2.80∼3.64 and 2.02∼2.67 log CFU/g, respectively, compared to those of the control. Combined treatment of 50 ppm ClO₂ and 0.5% fumaric acid reduced total aerobic bacteria, yeast and molds populations by 3.62∼3.82 and 2.47∼3.02 log CFU/g, respectively. Based on the results, combined treatment of ClO₂ and fumaric acid was more effective in controlling microorganisms in the wild vegetables than either ClO₂ or citric acid. In addition, combined treatment of ClO₂/fumaric acid/blanching reduced the populations of total aerobic bacteria by 4.59∼5.12 log CFU/g, and populations of yeast and molds were not detected by treatment. These results suggest that combined treatment of ClO₂/fumaric acid/blanching is the most effective method for improving microbiological safety of wild vegetables after harvest.