• Korean Journal of Fisheries and Aquatic Sciences
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• v.20 no.3
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• pp.237-247
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• 1987

The present study deals with the physico-chemical and meteorological conditions in Porphyra-cultivation ground to determine the relationship between laver production and its environmental factors in Kwangyang Bay from January to April in 1986. As a result, major environmental factors which are thought to have a great influence upon the poor harvest during the cultivation period are as follows; 1) the excessive rainfall in the beginning of cultivation period 2) the accumulation of suspended matters on the thallus of laver 3) the decrease of current velocity and the stagnation of the water in the cultivation ground.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.583-595
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• 2014

Hospitals in Korea have been increasingly using physician assistants (PA) as an alternative way of dealing with the shortage of residents. However, some incidents of a Physician's Assistant practicing beyond their legal scope require closer examination of the current PA's roles and functions. This study is a web-based survey designed towards targeting physician assistants in Korea (KPA) who practice delegated tasks under a physician's license. Currently, there are 2,125 KPAs working in 141 general hospitals and medical centers. Data from 704 nurses from who responded to the questionnaire were analyzed with descriptive statistics using the SPSS 12.0 program. Their mean age is 32.5 years with 8-10 years of clinical experiences, with males being more likely to be a PA. Despite of KPAs providing medical services and performing invasive procedures, only 13% of KPAs are licensed APNs (advanced practice nurse). KPAs have a low job satisfaction due to a lack of rewards and the necessity for providing illegal practices, and are experiencing identity confusion. The current KPA system is a transitional product of the change from the hierarchial structure to a more collaborative relationship between the medical and nursing departments. Providing adequate education and training, establishing protocols with legal protection, and developing professional independent scope of care are recommended to deliver safe and efficient medical services.

• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.195-202
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• 2010

Cooling air-conditioning of APC (Agricultural Products processing Center) workplace is important to improve the working environment in the summer season. As existing cooling systems for air-conditioning of whole workplace are inefficient because of their high equipment operating costs, relatively inexpensive cooling system is required. The objectives of this study were to simulate the thermal flow fields in APC workplace having the positive and negative pressure type fan and pad systems and spot cooling system by using CFD software (FLUENT, 6.2) and estimate the cooling effectiveness of respective cooling systems. The results showed that the negative pressure type fan and pad system was inappropriate for the present APC workplace because of excessive outside air influx from open gateway and the positive pressure type fan and pad system created relatively low temperature field but non-uniform velocity field at worker positions. The spot cooling system could supply cool air to worker positions with relatively constant air velocity and temperature.

• Proceedings of the Korean Society of Community Living Science Conference
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• 2009.09a
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• pp.92-92
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• 2009

농촌진흥청에서는 농촌어메니티 자원의 중요성을 널리 알리고 자원활용의 새로운 방향을 모색하고자 2003년부터 농촌어메니티 환경설계공모전(이하 어메니티공모전)을 개최하고 있으며 2008년까지 6회의 공모전에서 166개의 입상작이 배출되었다. 본 연구는 이와 같은 수상 작품들을 통해 농촌어메니티 콘텐츠를 분석함으로써 보다 효과적이고 실현가능한 농촌어메니티 환경계획의 대안을 제시하고자 한다. 본 연구는 6년간의 공모전 수상작품을 중심으로 농촌공간, 생산물 및 특산물, 프로그램 등의 농촌어메니티 자원을 활용한 콘텐츠를 분석하는 것을 목표로 이루어졌다. 연구 대상으로 제 1회부터 6회까지의 농촌어메니티 환경설계공모전 수상작품 166점 중에서 내용이 간략하게 요약되어 있어 분석에 부적합하다고 판단되는 입선작품을 제외하고 최우수상부터 특선까지 81개 수상작의 내용을 중심으로 이루어졌다. 수상작들은 대부분 한 지역을 대상으로 어메니티자원을 발굴하고 이를 활용한 계획을 수립하고 있었으며, 설계의 배경 및 목적, 지역 주요자원 분석, 기본 구상, 세부계획, 프로그램 계획의 내용 등이 포함되어 있었다. 그 중 작품의 경향을 파악할 수 있는 설계 목적별 작품 분석결과 우선 계획의 공간적 범위에 기존 농촌의 주거지 등 마을을 포함하여 마을계획이나 생활개선의 내용을 담고 있는 작품들이 69점으로 전체 작품 중 85%를 차지하였으며, 마을과 프로그램상으로 연계는 하였으나 물리적 대상이 마을로부터 독립된 공원조성 등의 내용을 담은 작품이 12점(15%)이었다. 어메니티 환경계획의 목적과 목표는 각 작품들이 대부분 하나 이상의 목표를 설정하고 있었으며 주요 목적만을 중심으로 분석하기 위해서 작품 패널 및 설명서의 초반에 명확하게 제시한 설계목적을 분석의 대상으로 살펴본 결과 67.9% 작품이 직접적으로 도시민 휴양 및 농촌관광을 목적으로 하고 있는 것으로 나타났으며 46.9%가 주민의 생활개선, 55.6%가 소득증대, 46.9%가 자연환경보전을 목적으로 설계된 것으로 나타났다. 또한 활용된 주요 어메니티 자원을 분석한 결과 자연경관 26, 농특산물 21, 지명 14, 전통자원 13, 동식물 13점 등으로 나타났다. 본 연구는 실제 농촌다움이 살아있는 농촌마을을 구현하고, 지속적인 농촌어메니티 자원의 활용체계를 수립하는데 이바지 할 수 있을 것이다.

• Journal of the Korean Society of Radiology
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• v.7 no.6
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• pp.383-387
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• 2013

Diagnostic imaging systems play a critical role in obtaining anatomical images, which increases the frequency of inspection all over the world. However the likelihood that patients are exposed to relatively high radiation dose increases, which may lead to an increase of patient dose due to unnecessary radiation exposure unless appropriate management is accompanied. Thus the revised edition of IEC 60601-2-44 which is constancy tests for CT equipment which is designated as special medical equipment and is subject to safety management was studied. The results suggested the 3rd has been revised rationally in order to overcome the limitations in the 2nd by adopting clear and enhanced references, which implies the replacement of IEC 60601-2-44 2nd edition with IEC 60601-2-44 3rd will prevent the patients from the harm from improper medical equipment.

• Korean Journal of Poultry Science
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• v.17 no.1
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• pp.45-52
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• 1990

This study was carried out to establish shelf-life of the chicken product by examining the changes of physico-chemical and microbilogical quality of it during the storage at different temperature and period. Chicken product was stored at $4^{\circ}C$, $10^{\circ}C$, $25^{\circ}C$ and $30^{\circ}C$ for 32 days and its shelf-life was proved to by 2 days at $30^{\circ}C$, 4 days at $25^{\circ}C$ and $30^{\circ}C$ days below $19^{\circ}C$. There was no significant difference in pH and TBA value of the chicken product VBN content and mesophile count were most proper as a quality indicator because they were lower level until 30 days storage. But gas formation rates and sensory evaluation scores were proper as a quality indicator to estimate the shelf-life of the chicken product during the storage at the different temperatures because it was vacuum packaged. Q$_{10}$ value of the chicken product was calculated as 3.99 by examined data of gas formation rates and sensory scores. Estimated shelf-life of chicken product by Q$_{10}$ value was 1 day at $35^{\circ}C$, 4 days at $25^{\circ}C$ 16 days at $15^{\circ}C$ and 64 days at $5^{\circ}C$ respectively.

• Journal of Animal Environmental Science
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• v.8 no.3
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• pp.145-152
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• 2002

This experiment was conducted to investigate the efficiency and compatibility of the coagulation and settling processes of leachates from the compost of two swine farms. And results obtained are as follows : 1 In the farm A where $COD_{Cr}$, $COD_{Mn}$ and $BOD_5$ of original leachate were 4,400, 2,950 and 87mg/l, respectively, the rate of coagulation and settling process was more efficient in the leachate treated with the conjugate of Alum and cation polymer than that of Alum and anion polymer. The concentrations of BOD$_{5}$, T-N and T-P of the effluent after treatment with the conjugate of Alum and cation polymer under the optimum condition were 19, 257.5 and 0.4mg/l, respectively which are under the governmental regulation level. 2. In the farm B where $COD_{Cr}$, $COD_{Mn}$ and $BOD_5$ of original leachate were 4,720, 3,040 and 95mg/l, respectively, the conjugate of $FeCl_3$, 1,500mg/l and cation polymer 10mg/l ($FeCl_3$+FO4240) was most effective coagulation and settling agent compared with the others. The concentrations of BOD$_{5}$, T-N and T-P of the effluent after treatment with $FeCl_3$+FO4240 were 15.3, 829.4 and 2.8mg/l, respectively. And the concentration of T-N was higher than the governmental regulation level, presumably because of too high concentration of NH$_4$$^{+}$-N in the leachate.

• Korean Journal of Food Science and Technology
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• v.25 no.4
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• pp.386-390
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• 1993

Addition of starch syrup, table sugar, potato powder, skim milk powder an parched soybean powder to melon flesh was suitable as fermented melon base. The manufacturing process of fermented melon was as follows: Pasteurization for 10 min at $95^{\circ}C$, use of 1% starter culture, fermentation for 12 hours at $35^{\circ}C$ and ripening for 3 days at $8^{\circ}C$. The growth and acid production of Pediococcus acidilactici among several starter cultures were most active for the first 12 hours, but such activities were disappeared during ripening. In the case of Lactobacillus plantarum, the activities were not high during fermentation, which, however, increased during ripening. Throughout the whole manufacturing process, the fermented melon with a mixed culture of P. acidilactici and L. plantarum showed more cell number of each bacterium and higher titratable acidity than that with single cultures. Also P. acidilactici surpressed the growth of L. plantarum during ripening.

• Korean Journal of Food Science and Technology
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• v.38 no.3
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• pp.385-391
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• 2006

Physicochemical properties of hydroxypropylated waxy rice starches were investigated to reduce steeping-time of yukwa (Korean oil-puffed rice snack) processing. Swelling power of hydroxypropylated waxy rice starch increased at relatively higher temperature $(60^{\circ}C)$ than native waxy rice starch $(70^{\circ}C)$. Solubility of hydroxypropylated waxy rice starches increased with increasing propylene oxide content. Pasting temperature $(66.3-66.9^{\circ}C)$ and peak viscosity (216-232 RVU) of hydroxypropylated waxy rice starch were higher than those of native starch (179 RVU) and increased with increasing propylene oxide content. DSC thermal transitions of hydroxypropylated waxy rice starches shifted toward higher temperature. Amylopectin melting enthalpy of hydroxypropylated waxy rice starch (8.4-9.2 J/g) was similar to native starch (9.0 J/g). X-ray diffraction patterns of native and hydroxypropylated waxy rice starches showed typical A-type pattern with no significant differences between them, suggesting hydroxypropylation only affected amorphous region. Results suggest hydroxypropylated waxy rice starch is not applicable for yukwa due to low puffing efficiency and dark color.

• Korean Journal of Food Science and Technology
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• v.38 no.3
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• pp.317-324
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• 2006

Pesticide residues were monitored in agricultural products purchased at Gyeongin and Jeolla-do provinces. Total 245 pesticides were analysed by GC-MS and LC-MS/MS, and residual pesticides were detected in 70 samples (19.7%), with spinach and chard showing high detection frequency of 35%. Fifteen samples (4.2%) exceeded Korea Maximum Residue Limits (MRLs), and 30 types of pesticides were detected in samples with azoxystrobin, procymidine, endosulfan showing considerably high frequencies in respectively 14, 13, and 13 samples. The amount of 11 pesticide including chlorpyrifos, indoxacarb among them were detected over Korea MRLs. No residual pesticides were detected in 285 (80.3%) samples, and residual pesticides levels of 55 samples (15.5%) were lower than Korea MRLs, indicating 95.8% samples were relatively safe.