흰다리새우 유생의 저염분 순치방법에 따 른 생화학적 특성변화

김수경,심나영,장진우,전제천,김수경,신윤경 한국환경생물학회 2017 환경생물 : 환경생물학회지 Vol.35 No.1

This study focused on the physiological change of the shrimp, Litopenaeus vannamei postlarvae 15 stages, under different acclimation methods up to the endpoint of 4 practical salinity unit (psu). Besides using sea water as the control, two acclimation methods, fast acclimation (50% salinity reduction every 8 hours) and slow acclimation (50% salinity reduction every day), were adapted. Results show that the survival rate, glucose and blood uric nitrogen of each group were not significantly different. However, the ion profile differed according to the acclimation methods. Magnesium and sodium of shrimps acclimated to low salinity in both the methods, showed lower concentration than shrimps at 32 psu sea water. Especially, Na+ concentration, which directly influences the osmolality of shrimp, decreased sharply in the fast acclimated group during the first eight hours (from 32 psu to 16 psu). To reduce acclimation stress, it is recommended to take more than eight hours during the first step for reducing the salinity.

단백질원에 따른 흰다리새우 (Litopenaeus vannamei)의 성장효과

김수경,김은지,서형철,장인권,김수경 한국수산과학회 양식분과 2012 한국수산과학회 양식분과 학술대회 Vol.2012 No.6

바이오플락 탈질수가 어린 흰다리새우, Litopenaeus vannamei의 생존율 및 생리특성에 미치는 영향

김수경,장진우,조영록,김준환,김수경 한국환경생물학회 2019 환경생물 : 환경생물학회지 Vol.37 No.2

This study investigates the effect of denitrified biofloc water on changes in the water quality parameters and the physiological characteristics of shrimps. Biofloc rearing water contains a large number of microorganisms and can rapidly stabilize the water quality and energy saving if reusable due to high water temperatures. Rearing water contain floating bacteria with both aerobic and anaerobic bacteria. Therefore, when the carbon source is added in limited air supply, the anaerobic state is activated and the denitrification process is possible. In this study, the denitrification water had the following properties: ammonia (6.9 mg L-1), nitrite (0.3 mg L-1), nitrate concentration (9.2 mg L-1), high pH (8.42) and alkalinity (590 mg L-1). The experimental group consisted of seawater (SW, control), a mixture of Seawater and denitrified biofloc water (DNW) in the ratio of 3:1, 1:1 and DNW only. All experiments were done in triplicate. As a result, the survival rate never changed even when 100% of the denitrification water was utilized. However, a body fluid analysis showed that creatine and BUN were increased due to index of stress and the tissue damage resulting from the high denitrified water content. Body fluid ions (Na+, K+, and Cl-) significantly decreased as the denitrified water content increased. It was recommended that the denitrification water be mixed with a certain ratio (less than 50%) in the future as it may affect the osmotic pressure control in shrimps. 안정된 바이오플락 사육수에는 대량의 미생물들이 존재하고 있으며 사육수온이 높아 재사용이 가능할 경우 빠른 수질안정화 및 에너지 절약을 할 수 있다. 바이오플락 사육수 내 부유하고 있는 자가 및 타가 영양세균은 호기성과 혐기성 세균을 모두 포함하고 있어 탄소원을 넣고 산소를 공급하지 않는 혐기성 상태로 만들면 탈질과정이 가능 하다. 본 연구에서 바이오플락 탈질수의 특성은 암모니아(6.9 mg L-1), 아질산 (0.3 mg L-1), 질산농도 (9.2 mg L-1), 높은 pH (8.42), alkalinity (590 mg L-1)였으며 이 탈질수를 첨가한 사육수의 물리적 환경 변화가 어린새우의 생존 및 생리적 특성에 미치는 영향을 조사하였다. 그 결과 탈질수를 100% 사용하여도 생존율의 변화를 보이지 않았으나 혈림프를 포함한 체액 분석결과 탈질수 혼합에 의한 조직손상 및 스트레스 지표인 크레아틴, 혈중 요소성 질소의 증가가 관찰되었고 탈질수 혼합비율이 높을수록 새우 체내 이온(Na+, K+, Cl-)의 농도가 유의적으로 감소하여 향후 삼투압조절에 영향을 미칠 수 있는 것으로 나타남에 따라 탈질수를 일정비율로 (50% 미만) 혼합하여 사용하는 것이 바람직한 것으로 사료된다.

해수 저염분 순치과정에서 먹이섭취가 흰다리새우, Litopenaeus vannamei 유생에 미치는 영향

김수경,심나영,조지현,김종현,김수경 한국환경생물학회 2018 환경생물 : 환경생물학회지 Vol.36 No.3

저염분 순치기간에 먹이를 섭취함으로서 얻을 수 있는 초기 유생의 생리적 변화는 다음과 같이 요약할 수 있다. 하루 동안의 순치기간에 염분농도에 따른 유생의 생존율은 차이를 보였지만 각 염분구간별 먹이섭취 유무에 따른 생존효과는 유사하였다. 그러나 먹이섭취 시 유생이 에너지원으로 활용할 수 있는 cholesterol, triglyceride의 증가가 있었으며 삼투압에 영향을 미칠 수 있는 glucose 농도가 유의적으로 증가하였다. 또한 저염분 순치기간 동안에 스트레스, 조직손상 및 대사작용의 지표가 되는 BUN과 creatine의 감소가 있었다. 먹이섭취로 인한 소화효소의 활성이 먹이를 섭취한 실험구 모두에서 증가하였다. 그러므로 유생발달과 함께 중요한 소화, 순환, 생식기관이 형성되며 탈피 성장을 위한 신진대사가 빠르게 진행되는 유생시기에 저염분 순치가 효율적으로 이루어져 향후 지속적인 성장을 유도하기 위해서는 먹이를 섭취하는 것이 더 효과적인 것으로 판단되었다. This study focused on the effects of feeding on postlarvae of shrimp, Litopenaeus vannamei, during the identified acclimation time to low salinity. A total of 5 different salinity groups with or without feeding (32, 24, 16, 8, and 2 psu, 1 liter, triplicates) were prepared, and 30 shrimp were settled at PL21 (postlarvae) and placed in each group. After 24 hours of the experimentation process, the survival rate of the fed and starved groups was observed to be lower in the 2 psu group compared to other salinity groups, with the rate of 86.6% and 81.1%, respectively. The condition index of glucose and triglyceride, which are important factors for osmoregulation and as energy sources, was 4.2-7.6 times and 2.7-3.4 times higher in the fed groups than the starved groups at all the levels of salinities. The creatine level increased by 1.1-1.5 times in the starved groups as compared to the fed groups. Likewise, the activity of all the digestive enzymes like, lipase, α-amylase, trypsin, and alkaline protease were clearly higher in the fed groups (ANOVA, p<0.05). Apparently, it was observed that feeding is effective for the postlarvae of shrimp, which shows a characteristic fast metabolism and larval development, during the acclimation period to low salinity.

주부 김수경

김수경 충북연구원 2009 앞,뒤 바라보다 Vol.- No.2

[北學義]를 통해본 朴薺家의 중국인식

김수경 이화여자대학교 대학원 1995 硏究論叢 Vol.28 No.-

명상집단치료가 상태불안과 특성불안을 경험하는 청소년들의 불안민감성 및 불안통제감 향상에 미치는 효과 : 수용-전념치료와 알아차림명상을 중심으로

김수경 한국명상상담학회 2013 명상심리상담 Vol.9 No.-

Purpose: This study hypothesized process variables of ACT for Anxiety and examined the effects of a counseling program on anxiety, which was also based on Acceptance-Commitment Therapy (ACT). Methods: This program applied mindfulness, breathing meditation, communion meditation and so on with Acceptance-Commitment Therapy. In doing so, the program was administered to middle school students and high school students as well as general public for 8sessions. This analysis included 27 form the treatment group and 27 from the control group. Results: This study showed that the treatment group reported more decreases in anxiety, depression, anxiety sensi-tivity, and anxiety controllability than the control group. Conclusion: This study confirmed that ACT and Mindfulness have therapeutic effects on state anxiety and trait anxiety.

노인의 구강건강과 영양상태 관계성 연구 : 사회자본 조절효과를 중심으로

김수경,김지원,이현주,신혜리,김영선 한국노인복지학회 2019 노인복지연구 Vol.74 No.1

The purpose of this study is to find out the relationship between the elderly’s oral health and their nutrition status. Then, we would examine if the social capital has their moderating effects on the moderator variables. For the study, the 2014 National Survey of the Elderly was used. Regarding the final analysis participants, they were selected by the elderly’s activities of daily living (ADL) and the elderly’s need of aid by their children or spouse, which are the groups classified by 2017 Korea Institute of Health and Social Affairs (KHIDI). To reach the main purpose of this study, we conducted the regression analysis by each group. The result is like the following. First, it was confirmed that both oral health and nutrition status are related. Second, the social capital controls the relationship between the oral health and nutrition status in the both the group 2 (Active Seniors in Risk), who is self-contained but needs the aid of their health, and the group 3(Non Active Seniors), who needs the aid by their children and spouse on their daily lives and healths, of all 4 groups. This research’s result has a very essential point in the fact that it finds out the importance of maintaining and expanding the oral health management and social capital to improve the elderly’s nutrition status, by thoroughly examining the relationship between the elderly’s oral health, nutrition status, and the social capital. 본 연구의 목적은 노인의 구강건강과 영양상태의 관계를 살펴보고, 사회자본이 변수들 사이에서 조절효과를 나타내는지를 검증하고자 하였다. 이를 위해 2014 노인실태조사 자료를 활용하였으며, 최종분석 대상자로는 한국보건사회연구원(2017)의 노인의 일상생활수행능력(ADL) 정도와 건강에 대한 자녀 및 배우자의 도움 필요 여부에 따라 제시한 집단기준에 의거하여 최종분석대상자 6,617명을 선정하였다. 연구의 주 목적을 달성하기 위해 각 집단별로 회귀분석(regression analysis)을 실시하였다. 연구결과는 다음과 같다. 첫째, 구강건강과 영양상태는 통계적으로 유의한 관계가 있음을 확인하였다. 둘째, 네 집단 중 자립적 일상생활이 가능하지만 건강에 대한 도움을 필요로 하는 노인(Active Seniors in Risk, 집단 2)과 일상생활 수행과 건강에 대해 자녀 및 배우자 모두의 도움을 받는 노인(Non Active Seniors, 집단3)에서 사회자본은 구강건강과 영양상태 간의 관계를 조절하는 것으로 밝혀졌다. 본 연구결과는 노인의 구강건강과 영양상태, 사회자본 간의 관계를 통합적으로 살펴봄으로써 노년기 영양상태 개선을 위한 구강건강 관리와 사회자본 유지 및 확대의 중요성을 밝혔다는 점에 의의를 가진다.

뇌졸중 환자의 연하장애 치료 : 사례연구

김수경 대한작업치료학회 2002 대한작업치료학회지 Vol.10 No.2

Objective: The purpose of this case study was to describe the treatment of a stoke patient with dysphagia. Method: The subject was an adult stroke patient with dysphagia. She was evaluated on the Functional Dysphagia Scale employing videofluoroscopic method. Swallowing task was swallowing of a thick fluid (5 cc) on oral intake. The treatments in this case study included active postural control activities, strengthening of facial muscles, facial and oral cavity massage, jaw and tongue mobilization, respiratory activities, icing and feeding training once a day. Results: A total score of functional dysphagia scale decreased from 95 to 60 and 23 consecutively. Conclusion: In this particular case study, the swallowing function in the stroke patient with dysphagia improved through occupational therapy intervention.

미혼남녀의 자기관이 결혼가치관에 미치는 영향: 이성관계의 경험의 매개효과

김수경 한국여성심리학회 2019 한국심리학회지 여성 Vol.24 No.4

This study has investigated the mediating effects of heterosexual dating experiences on the relations between self-construals and marital values of 266 single males and females (134 males and 132 females) in their 20s and early 30s. As a result, first, significant differences were observed in self-construals, marital value, and dating experiences according to demographic variables such as gender, education, and economic level. Second, as a result of examining the main factors for predicting marital intention, the heterosexual dating experience, educational level, and marital values predicts marital intention significantly. The marriage intention was high. Third, as a result of conducting path analysis to verify the mediating effect of dating experience in the relationship between self-construals and marriage value of single males and females, interdependent self-construals influenced marital values through the experience of heterosexual relationship. Independent self-construals, on the other hand, had a direct effect on conservative marrital values. The results of this study showed that marital values differed according to the types of self-construals, and interdependent self-construals predicted the formation of a positively positive marital-values through a healthy dating relationship experiences.