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유아 대상 과일·채소 영양교육 효과분석: 체계적 문헌고찰 및 메타분석
안수민(Sumin An),안혜진(Hyejin Ahn),우정현(Jeonghyeon Woo),윤영(Young Yun),박유경(Yoo Kyoung Park) 한국영양학회 2021 Journal of Nutrition and Health Vol.54 No.5
본 연구는 유아를 대상으로 한 영양교육의 중재효과를 평가하고, 과일·채소의 선호도 및 영양지식 향상에 효과적인 영양교육 유형을 분석하기 위해 체계적 문헌고찰과 메타분석을 수행하였다. 메타분석의 효과크기 결과에 따르면 유아 대상 영양교육은 과일·채소 선호도 및 영양지식을 유의적으로 향상시켰으며, 일반영양교육 보다는 과일·채소 중심 영양교육이 유아의 과일·채소 선호도 및 영양지식 향상에 더 효과적이었다. 또한 유아의 과일·채소 선호도 및 영양지식 향상을 위해서는 원예활동, 요리활동 및 오감활동 등의 직접 노출 활동을 포함하는 영양교육이 더욱 효과적이라는 것을 확인할 수 있었다. 본 연구는 유아대상 영양교육의 효과를 입증했을 뿐만 아니라, 유아의 과일·채소 선호도 및 영양지식 향상에 가장 효과적인 영양교육의 형태를 도출했다는 점에서 의의가 있다. Purpose: A systematic review and meta-analysis of nutrition educational intervention studies was performed to assess the association between nutrition education intervention and fruit & vegetable (F&V) preferences and nutrition knowledge in preschool children. Methods: The relevant studies of nutrition education intervention and F&V preferences and nutrition knowledge published from January 2000 to June 2020 were located using PubMed, Web of Science, Cochrane Library, Research Information Sharing Service, Korean Studies Information Service System databases, and lists of references. A random-effects meta-analysis was conducted to estimate the standardized mean difference with a 95% confidence interval (CI). Subgroup analyses were performed to identify the association between nutrition education and F&V preferences and nutrition knowledge. Results: The results show that the effect sizes (ES) of F&V preferences and nutrition knowledge of preschool children were 0.31(95% CI, 0.23, 0.39), and 1.69(95% CI, 1.27, 2.12), respectively. The result of subgroup analysis, nutrition education focused on F&V (F&V preferences, ES: 0.32; nutrition knowledge, ES: 2.09) presented a slightly larger effect than general nutrition education (F&V preferences, ES: 0.26; nutrition knowledge, ES: 1.62). As for the type of exposure to F&V, direct exposure education (F&V preferences, ES: 0.40) had a greater effect than indirect exposure (F&V preferences, ES: 0.26). This meta-analysis showed that nutrition education intervention had positive effects on the F&V preferences and nutrition knowledge in preschool children. Conclusion: In conclusion, from the meta-analysis and subsequent subgroup analysis, we found that varied types of nutrition education intervention had varying effects on F&V preferences and nutrition knowledge in preschool children.
염분 주입 농도에 따른 아나목스의 공정성능 효율과 바이오매스 스트레스
( Victory Fiifi Dsane ),안수민 ( Sumin An ),오태석 ( Taeseok Oh ),최영균 ( Younggyun Choi ) 한국물환경학회 2020 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2020 No.-
In this study, two six hourly cyclical lab-scale sequencing batch reactors were used to study the performance of Anammox bacteria at various saline conditions ranging between 0.1%, 0.3%, 0.5% to 2% NaCl concentration increased in steps. The two reactors with operational volume of 1.8 L were operated for 200 days with the stirrer mixing speed set at 120 rpm. The nitrogen loading rate (NLR) fed to the SBRs was maintained at 0.36 g N (L day)-1 throughout the operational period. A combination of Argon and CO2 gas was used to maintain an anaerobic environment within the reactors alongside controlling the pH at a maximum set point of 7.9. At the initial set-up phase, the seed biomass acclimation to the lab scale reactors showed an inconsistent performance however, a stable performance was observed after about 30 days of operation. The substrate removal efficiency predominantly ranged between 95 - 98% during most of the operational period. Reaction molar ratios Rs and Rp determined experimentally from the substrate utilization rates were approximately 1.13 and 0.31 respectively. The averagely steady total suspended solids (TSS) and volatile suspended solids (VSS) in both reactors prevented the need for biomass re-seeding. Anammox biomass stress index; a ratio of the dissolved adenosine triphosphate (dATP) to the total adenosine triphosphate (tATP), determined using LuminUltra microbial monitoring kits showed a definite correlation between the NaCl concentration and biomass stress. Biomass stress recovery to acceptable ranges (< 20%) was observed after few operational cycles at lower NaCl concentrations and vise versa. The Specific Anammox activity pragmatically remained constant for the biomass and the average nitrogen removal efficiency (NRE) was 80%.
염분 주입 농도에 따른 아나목스의 공정성능 효율과 바이오매스 스트레스
( Victory Fiifi Dsane ),안수민 ( Sumin An ),오태석 ( Taeseok Oh ),최영균 ( Younggyun Choi ) 한국물환경학회 2020 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2020 No.-
In this study, two six hourly cyclical lab-scale sequencing batch reactors were used to study the performance of Anammox bacteria at various saline conditions ranging between 0.1%, 0.3%, 0.5% to 2% NaCl concentration increased in steps. The two reactors with operational volume of 1.8 L were operated for 200 days with the stirrer mixing speed set at 120 rpm. The nitrogen loading rate (NLR) fed to the SBRs was maintained at 0.36 g N (L day)-1 throughout the operational period. A combination of Argon and CO2 gas was used to maintain an anaerobic environment within the reactors alongside controlling the pH at a maximum set point of 7.9. At the initial set-up phase, the seed biomass acclimation to the lab scale reactors showed an inconsistent performance however, a stable performance was observed after about 30 days of operation. The substrate removal efficiency predominantly ranged between 95 - 98% during most of the operational period. Reaction molar ratios Rs and Rp determined experimentally from the substrate utilization rates were approximately 1.13 and 0.31 respectively. The averagely steady total suspended solids (TSS) and volatile suspended solids (VSS) in both reactors prevented the need for biomass re-seeding. Anammox biomass stress index; a ratio of the dissolved adenosine triphosphate (dATP) to the total adenosine triphosphate (tATP), determined using LuminUltra microbial monitoring kits showed a definite correlation between the NaCl concentration and biomass stress. Biomass stress recovery to acceptable ranges (< 20%) was observed after few operational cycles at lower NaCl concentrations and vise versa. The Specific Anammox activity pragmatically remained constant for the biomass and the average nitrogen removal efficiency (NRE) was 80%.
염분 주입 농도에 따른 아나목스의 공정성능 효율과 바이오매스 스트레스
( Victory Fiifi Dsane ),안수민 ( Sumin An ),오태석 ( Taeseok Oh ),최영균 ( Younggyun Choi ) 한국물환경학회 2020 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2020 No.-
In this study, two six hourly cyclical lab-scale sequencing batch reactors were used to study the performance of Anammox bacteria at various saline conditions ranging between 0.1%, 0.3%, 0.5% to 2% NaCl concentration increased in steps. The two reactors with operational volume of 1.8 L were operated for 200 days with the stirrer mixing speed set at 120 rpm. The nitrogen loading rate (NLR) fed to the SBRs was maintained at 0.36 g N (L day)-1 throughout the operational period. A combination of Argon and CO2 gas was used to maintain an anaerobic environment within the reactors alongside controlling the pH at a maximum set point of 7.9. At the initial set-up phase, the seed biomass acclimation to the lab scale reactors showed an inconsistent performance however, a stable performance was observed after about 30 days of operation. The substrate removal efficiency predominantly ranged between 95 - 98% during most of the operational period. Reaction molar ratios Rs and Rp determined experimentally from the substrate utilization rates were approximately 1.13 and 0.31 respectively. The averagely steady total suspended solids (TSS) and volatile suspended solids (VSS) in both reactors prevented the need for biomass re-seeding. Anammox biomass stress index; a ratio of the dissolved adenosine triphosphate (dATP) to the total adenosine triphosphate (tATP), determined using LuminUltra microbial monitoring kits showed a definite correlation between the NaCl concentration and biomass stress. Biomass stress recovery to acceptable ranges (< 20%) was observed after few operational cycles at lower NaCl concentrations and vise versa. The Specific Anammox activity pragmatically remained constant for the biomass and the average nitrogen removal efficiency (NRE) was 80%.