최근 해수담수화 기술에 관한 관심이 증가하면서 해수 전처리 기술의 중요성이 날로 증가하고 있다. 해수담수화 기술은 미래 수처리 핵심기술로 자리매김하고 있고 이를 위한 전처리 기술의 올바른 선택과 운영은 향후 해수담수화 기술의 효율향상과 공정 최적화를 위해 중요하게 고려되어야 할 것이다. 해수담수화 전처리 기술의 목적은 주로 해수에 존재하는 입자성 물질, 콜로이드성 물질, 유기물질, 무기물질 그리고 미생물 오염물질 등의 처리를 통해 후단 담수화 기술의 효율성을 향상시키기 위함이나 전처리 기술 대상 처리물질의 범위는 매우 다양하여 맞춤형 전처리 기술의 적절한 적용이 필요하다. 해수담수화에서 올바른 전처리 기술의 적용은 후단 담수화 시설의 높은 처리효율 및 문제점을 최소화시킴과 동시에 해수의 큰 수질변동과 기후적인 그리고 지역적인 영향 등에 즉각적으로 대처할 수 있으므로 전처리 기술의 운영전략은 미래 해수담수화 기술의 성공여부를 결정짓기 위해 매우 중요하게 다루어져야 한다. 또한 최근에 많은 관심을 가지고 있는 해수 미세조류의 번성은 담수화 전처리 기술의 선정에 있어서 잠재적인 장애가 되고 있어 이에 대한 올바른 이해도 반드시 필요하다. 본 총설에서는 해수담수화 전처리 기술에 관한 그동안의 연구동향을 분석하고 해수담수화 전처리 기술의 선택 및 운전 최적화 달성을 위한 향후 도전과제들을 제시하고자 한다.

배양시간(6, 12, 24, 48시간)에 따른 Yersinia enterocolitica 균체 및 배지 대사체들의 변화를 이해하기 위하여 GC/MS와 다변량통계분석을 이용하여 분석한 결과 Partial Least Squares-Discriminant Analysis(PLS-DA) scores plots 상에서 배양시간에 따라 분석 시료들이 뚜렷하게 분리되었다. 시료들 사이의 차이에 관여하는 대사물질들을 동정한 결과 균체에서는 ethylene glycol, valine, ethanolamine, succinic acid, adenine, stearic acid, 배지에서는 glycine, fumaric acid, threonine, aminomalonic acid, malic acid, glutamic acid, citric acid가 배양시간에 따른 차이가 나는 것으로 확인되었다. 이들 대사물질들을 이용하여 관련 대사경로를 도출한 결과 배양시기에 따라 에너지 생성에 관여하는 대사경로가 주로 변하는 것으로 관찰되었다. Y. enterocolitica의 경우 대수기 초기에는 TCA cycle을 통해 에너지를 공급하다가 정지기에 들어서면서 정상적인 TCA cycle를 수행하지 못하고 ethanolamine 및 ethylene glycol 등 다른 탄소원 또는 질소원을 공급하는 것으로 확인되었다. 비록 관련된 많은 연구가 필요함에도 불구하고 대사체분석 기술을 활용한 Y. enterocolitica 균체 및 배지 분석 연구는 배양시간에 따른 대사과정의 변화를 관찰할 수 있을 뿐만 아니라 향후 균체 연구의 다양한 분야에 접목될 수 있을 것으로 사료된다.

탄소흡수원으로써의 산림부문의 중요성이 점차 증가함에 따라 다양한 정책들이 고려되고 있다. 제한된 예산과 자원 여건 하에서 정책의 효율성을 추구하기 위하여 본 연구에서는 최고최저조정법을 이용하여 산림청의 10대 산림 탄소흡수원 증진 정책들의 우선순위를 결정하였다. 산림 분야 전문가 설문조사 결과, 산림경영방식 및 시업체계 개선, 조림 및 식생복구 확대, 산림바이오매스 에너지 활용 및 이용시설 증대, 임목수집 시스템 및 재활용 체계 개선, REDD+ 사업 참여 확대 순으로 중요한 것으로 나타났다. 이 연구 결과는 향후 국내 산림탄소흡수원 확충을 위한 정부 핵심 정책을 수행함에 있어서 우선순위를 정하는데 중요한 정보를 제공할 것으로 기대한다.

2013년과 2014년에 경남 진주시 소재의 관행재배 단감원과 유기재배 단감원에서 쓸어잡기와 육안조사를 통하여 곤충상과 천적의 분포를 조사하였다. 2013년에 쓸어잡기로 조사한 결과 유기재배 단감원에서는 49종, 관행재배 단감원의 경우에는 18종의 곤충이 채집되었다. 2014년 유기재배 단감원에서는 총 7목 33과 66종, 관행재배 농가에서는 5목 15과 25종의 곤충이 채집되었다. 2013년과 2014년 모두 우점종은 노린재목으로 조사되었다. 두 단감원에서 우점종은 애긴노린재와 시골가시허리노린재였으며, 붉은잡초노린재와 톱다리개미허리노린재가 그 다음 우점종으로 조사되었다. 육안조사 결과 유기재배 단감원에서는 11목 72과 192종, 관행재배 단감원에서는 10목 52과 104종이 조사되었다. 유기재배 단감원의 우점종은 꽃매미와 양봉꿀벌, 지칭개수염진딧물로 조사되었고, 관행재배 단감원에서는 양봉꿀벌과 붉은잡초노린재로 조사되었다. 육안조사와 쓸어잡기 조사를 통해 천적 또한 채집되었다. 유기재배 단감원의 경우 쓸어잡기에서는 9종, 육안조사에서는 31종의 천적이 조사되었고, 관행재배 단감원의 경우 쓸어잡기에서는 5종, 육안조사에서는 18종의 천적이 조사되었다.

중국전통민가건축은 다양화의 특점이 있다. 중국은 국토가 광활하고 다양한 지리환경이 있으며 따라서 생산생활방법과 종교신앙은 직접적으로 부동한 민족과 지역의 주거문화를 이루었다. 이런 다양한 전통민가건축은 중요한 역사문화유산으로 매우 높은 기술과 예술가치를 가진다. 북경전통사합원은 길림조선족주민은 각기 화북지역과 동북지역의 대표적인 건축으로 이들은 제각기 다른 지역요소와 기후요소의 영향을 받았고 따라서 서로 다른 지역특점을 가지고 있다. 이외에 문화학습 전통재료 및 민간 기예 등 면에서도 차이를 보이고 있다. 따라서 이런 차이점은 서로 다른 주거문화의 특성을 보여준다.

To precisely assemble the fuel test rod, an orbital TIG welding system was designed and developed to accurately conduct orbital TIG welding for the nuclear fuel test rod. Using this system, a welding process needs to confirm the welding properties for orbital TIG welding. Therefore, preliminary weld tests were performed on the cladding tubes under various conditions, and the results show that the width and depth of HAZ of the cladding specimen welded using identical power during an orbital TIG welding cycle was continuously increased from a welded start-point to a welded end-point because of heat accumulation. The performance tests were conducted under the welding conditions considered through preliminary welding tests, and the properties of the specimens were conformed through surface and microstructure analyses.

This paper is concerned with the optimal design of hyperbaric oxygen therapy system chamber with separated rooms for multi-users using stress analysis. Hyperbaric oxygen therapy is very important medical remedy for increasing the concentration of melted oxygen in human and animal body to recover the impaired cell for the healthy condition. This research proposed the proper procedures to design the physical specifications and investigate the mechanical design safety of hyperbaric oxygen chamber with two separated rooms using computational stress analysis with Solidworks program. The result of this research will be used to make the real size model of practical hyperbaric oxygen therapy system for multi-users with separated chamber.

The Air-shiter is a new products possible ventilation at the same time cooling or heating with integrated refrigeration and ventilation units. and is a key component of the air shifter devices and bypass damper. The air shifter devices are to convert the outdoor air, room air, supply air and exhaust air flow. And the bypass damper is device to determine a ventilation. After research and development of these systems were as follows. It is confirmed that the Air-shiter is possible ventilation at the same time cooling or heating, and outdoor air cooling in the spring or fall.

The purpose of this study was to determine the effects of awareness and knowledge of the efficacy of carbonated water on consumption patterns and satisfaction for college students, who are the principal consumers of carbonated water. A survey was conducted with 502 college students in the Metropolitan area from May 13 to 18, 2015 and 455 questionnaires were analyzed. As for the differences in awareness and knowledge of the efficacy of carbonated water according to gender, females (14.60 and 0.76) had better awareness and knowledge than males (13.40 and 0.58) (p=0.000 and p=0.036). The more positive the awareness of carbonated water, the greater the knowledge (p=0.000); the greater the knowledge of carbonated water, the higher level of consumption satisfaction (p=0.006). The odds ratio of awareness for carbonated water was 11.98; that is, positive awareness led to higher levels of satisfaction than negative awareness (p=0.003). Since awareness of the efficacy of carbonated water was found to affect carbonated water drinking and satisfaction, it is necessary to provide correct information about the efficacy of carbonated water.

This study was conducted to provide desirable way on the eating of sugar foods, specifically the differences between dietary attitude, dietary behaviors and intake frequency. Data was collected from 279 middle students in the Incheon region through a self-administered questionnaire. According to the results of the reliability and factor analysis, the dietary attitude, dietary behaviors and intake frequency was 3.52, 2.89 and 2.51, with a Cronbach alpha coefficient of 0.867, 0.789, 0.940 and KMO of 0.899. Factor analysis extracted three components of the sugar preference, which we named dietary attitude (factor 1), dietary behaviors (factor 2), and intake frequency (factor 3). The dietary attitude and dietary behaviors showed a significant difference between sugar preference and non-preference (p<0.05). Also, intake frequency of sugar food showed a significant differences in chocolate, chocolate products, and ice cream between sugar preference and non-preference (p<0.05), whereas no significant differences were found in cake, bread kinds, juice, sweetness milk, yogurt between sugar preference and non-preference (p>0.05). A significant positive result of intake frequency of sugar food (p<0.05) was shown for the dietary attitude, BMI, weight, and monthly pocket money. Based on this study, the reduction of sugar intake is needed especially for middle students

The present study was designed to investigate health-related life habits, food preference, body composition for proper dietary habits, health promotion of communities in Incheon area. The effects of personal characteristics and health-related life habits such as gender, age, having breakfast, smoking, drinking, and exercise were analyzed using a surveying. 961 community subjects (262 males and 699 females) were investigated using a questionnaire and Inbody. Data were analyzed by descriptive statistics, chi squared test, and one-way ANOVA (analysis of variation) with SPSS/WIN 21.0. The result of gender distribution showed there were 262 males and 699 females, and with respect to the effect of gender on healthrelated life habits, smoking, drinking, and exercise showed significant differences (p<0.05), whereas having breakfast was not significantly difference (p>0.05). Therefore, the present provide evidence of a relationship between health-related life habits and gender. Regarding the effect of BMI on health-related life habits, exercise showed significant differences (p<0.05), whereas smoking, drinking, and having breakfast were not significantly difference (p>0.05). Thus, the present study also provides evidence of a relationship between health-related life habits and BMI. Our analysis shows that food preference and body composition were significant different from health-related life habits such as smoking, drinking, exercise, and having breakfast (p<0.05). Our analysis showed that body composition was significant differences from health related habits such as smoking, drinking, exercise, and breakfast (p<0.05). In conclusion, the present study suggests that diet guidelines support and improve health promotion designed by communities.

In order to determine the material characteristics of pork rinds according to the breeds, the chemical composition, color, pH, collagen contents, shear force, fatty acid and amino acid contents of pork rinds were investigated. White pork rinds (WPR) and black pork rinds (BPR) were evaluated before and after heating to compare the differences between breeds and the effects of heating treatment. In the chemical composition test, the respective moisture contents for WPR and BPR before heating were 49.90% and 53.75% but increased to 60.75% and 61.09% after heating. The test for crude protein and crude fat contents showed lower values after heating but WPR was higher than BPR. In the color test, the L value decreased rapidly with heating, dropping from 68.75 to 45.11 in WPR and from 67.22 to 49.64 in BPR. WPR had a higher L value and a lower a value than BPR before heating but had a higher L value and a lower a value than WPR after heating. pH was significantly higher in WPR than BPR regardless of heating (p<0.05). The collagen content for WPR and BPR was 10.38 g/100 g and 11.54 g/100 g but increased to 12.00 g/100 g in WPR and decreased to 11.40 g/100 g in BPR after heating. The shear force of 26.14 kgf in WPR was significantly higher than 12.89 kgf in BPR before heating (p<0.05), but the values decreased significantly after heating in both WPR and BPR. Linoleic acid in WPR was 17.29%, which was higher than 15.13% in BPR. The USFA for BPR was also higher than WPR. In amino acid composition, the EAA contents in WPR was 7,190 mg%, which was higher than 5,520 mg% in BPR.

This study was performed to investigate the phyico-chemical characteristics of breast meat from spent hens (SP) in comparison with the same part from the broilers (BR). The moisture and crude protein contents for SP were 72.56% and 24.26%, which were lower than 75.87% and 24.64% for BR. Crude fat and crude ash contents in SP were 0.45% and 1.00%, which were higher than the BR contents of 0.41% and 0.51%. The respective L, a and b value for SP were 48.61, 2.40 and 2.42, which were lower than the BR values of 49.41, 1.45 and 3.06 respectively. The pH for SP was 5.89, which was higher than pH 5.79 for BR. The WHC for SP was 50.29%, which was lower than that of BR at 62.31%. SP scored 28.04% in the heating loss test, which was significantly higher than 19.09% for BR. The shear forces for SP and BR were 4.86 kg and 1.36 kg respectively, which meant that the texture of SP was much tougher than that of BR. Hardness for SP was 8.89 kg while that of BR was 3.92 kg indicating that the SP texture is firmer than that of BR. Oleic acid was most abundant fatty acid in both samples and was at 44.15% in SP and 27.68% in BR.

As consumers are aware of their health and are more conscious of environmental conditions, there is an increasing demand for agri-foods obtained from organic agricultural practices. The present study aimed to investigate the physicochemical quality characteristics of blueberries. The weight, length, moisture contents, color (Hunter L, a, b), soluble solids contents, pH, and acidity were measured for their quality characteristics. In addition, ABTS radical scavenging activity was analyzed for antioxidant activities of organically and conventionally grown blueberries. Organically grown blueberries showed a greater weight, soluble solid contents, and pH than conventionally grown ones. Especially, organically grown blueberries showed significantly (p<0.05) higher weight and pH. Moisture contents of organically and conventionally grown blueberries were similar. L and b values of organically grown blueberries were higher than those of conventionally grown blueberries. ABTS radical scavenging activities of organically grown blueberries (36.4%) were higher than those of conventionally grown ones (36.4%), but the difference was not significant. Further studies are recommended to evaluate other differences between organically and conventionally grown blueberries.

This study investigated the effect of cooking class on improvement of eating behaviors and satisfaction with cooking activities in children. The questionnaires developed for this study were distributed to 380 mothers during June to August, 2011. A total of 286 questionnaires were used for analysis (81.7%), and frequency analysis, ANOVA, and χ2-test were completed using SPSS (version 14.0) software. The children with cooking experience (52.7%) showed more improvement of eating habits than children with no cooking experience (36.4%). Both types of children showed an ‘unbalanced diet’ with respect to eating habits. The overall satisfaction level was an average of 3.84±0.62. The effects after cooking activities varied for different aspects of improvement of eating habits: ‘Correcting unbalanced diet’ was 4.26±0.66, ‘nutrition knowledge’ was 4.06±0.70, ‘dining etiquette’ was 4.09±0.63, and ‘regular meals’ was 4.15±0.73. There was a significant difference between genders with regards to correcting unbalanced diet with vegetables (p<0.01). Ages from 10 to 12 were able to improve unbalanced diet with ‘grains’ (p<0.001), while ‘Kimchi’ (p<0.05) and ‘paste’ for ages from 10 to 12. In conclusion, cooking activities are regarded as effective in correcting unbalanced diet and eliciting positive changes in eating behavior.

Purpose: this study was to investigate the correlation between sleep, self-efficacy and intuition among nursing students. Methods: data were obtained from 144 nursing students with 3rd and 4th during Oct and Dec, 2008. Data were collected using by several measurement tools which were Oh's Korean Sleep scale A, Sherer's General Self-efficacy scale, and Smith Intuition instrument. Results: the results showed that there was difference between the grade and self-efficacy, difference between religion and sleep, between religion and self-efficacy, and between perceived health status and sleep. The correlation between sleep and self-efficacy was positive correlation. Conclusion: it has to develop the nursing intervention program to improve sleep and self-efficacy for nursing students. And then, nursing students will have the competence to reduce stress and anxiety about clinical practicum and overload of studying. For further research, it should to study the relationship between sleep, self-efficacy and intuition among nurses.

이 글은 기존의 연구 성과를 토대로 신라가 동해안을 따라 영역을 확대한 과정을 지리적 조건이나 육로 ․ 해로와 관련하여 살펴본 것이다. 특히 동해안 해로의 중심으로 삼척의 역사적 위상을 주목하였다. 신라는 소지마립간 9년(487)에 왕경을 중심으로 전국에 걸친 官道를 수리하였 다. 이미 1세기 중반∼2세기 초반에 탈해이사금이 등장하고 음즙벌국을 정복하면서 동로와 북로가 개설되었다. 신라는 당시에 실직곡국을 정복하면서 북로를 신라의 영역을 확대하는 주요 통로로 중시하였다. 지증마립간 6년(505)에 수로와 해로를 매개로 이루어지는 운송과 교역, 군사 활동의 이점을 높이려는 방안으로 ‘舟楫之利’가 제정되었다. 동시에 삼척과 흥해, 영 천 등지에 12곳의 성을 쌓은 뒤에 실직을 주로 삼고 군주를 두었다. 신라는 6세기에 해로의 정비와 관련하여 삼척을 강조하였다. 동해의 해안선은 육로로 통행하기가 쉽지 않았다. 하지만 灣이 잘 형성되지 않 았기에 큰 항구가 발달하기도 어려웠다. 다만 양양, 강릉, 삼척, 흥해, 영일, 포항 등지에는 하천 유역에 제법 넓은 평지에 형성되었다. 삼척은 바닷가에 연접하였으면서도 오십천을 통해 낙동강 상류는 물론 남한강 상류로 가는 육상교통로를 갖추었으며, 넓지는 않지만 오십천의 하구를 군항이나 수군 양성 기지로 쓸 수 있었다. 이러한 지리적 조건에 따라 지증마립간은 삼척에 주를 두고 이사부를 주둔시 켰다. 지증마립간 13년(512)에 이사부는 우산국을 정벌하였다. 그는 지도로왕 때 沿 邊의 관리를 맡아 내륙수로는 물론 해로에도 익숙하였고, 연안 해로는 물론 원양 해로에도 익숙하였다. 그는 왕경과 가까워 기밀을 유지하기에 편리하면서 선박 제 작에 필요한 수림이 울창하였던 흥해 일대에 주목하여 선박의 제조와 수군의 양성을 주도하였다. 나아가 연안 해로를 따라 선박과 수군 등 인적․물적 자원을 운송하여 삼척을 동해안 최대 군항으로 활용하였다. 그런 다음에 원양 해로를 이용 하여 우산국을 정벌하였다. 이사부의 우산국 정복은 신라의 동해안 인식을 확고하게 하였다. 신라 왕실은 삼척을 중심으로 한 동해안 인식을 꾸준히 유지하였다. 삼국통일 전후에 왕실과 緣故된 의상과 원효, 진표 등은 낙산사와 고성군을 찾았다. 그들은 무열왕 5년에 삼척에 설치한 北鎭에서 연안 해로를 따라 북상하였다. 신라 말에 헌강왕은 일본의 사신 파견과 관련하여 울산 일대의 항구와 포구에 관심을 가졌다. 더불어 신라 北邊의 상황과 관련하여 삼척에도 적지 않은 관심을 가졌다. 그 것은 삼화사와 관련되어 나타났다. 당시 왕실과 결연한 해인사 승려 決言은 860년 쯤에 삼척 삼화사 철불 조성에 깊이 관여하였다. 당시의 해인사 승려들은 헌강 왕은 물론 정강왕이 주관한 선왕의 명복을 기원하는 佛事를 주도하였다. 자연히 신라 왕실은 삼화사를 통해서 삼척에 대한 영향력을 유지하려고 하였다. 삼척은 동해안 일대의 여러 군현 가운데 신라의 영역 확대는 물론 신라 국가의 안녕과 관련하여 오랫동안 끊임없이 주목되었던 곳이었다.