• Journal of Mushroom
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• v.20 no.3
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• pp.138-146
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• 2022

To optimize initial cooling conditions, forced-air cooling was applied to freshly harvested oak mushrooms at 2 levels (0℃ for 30 minutes, at 0℃ for 1 hour) followed by room cooling at 3 levels (-3℃ for 1 day, 0℃ for 1 day, 3℃ for 1 day). After initial cooling, the oak mushrooms were packaged with PVC film, then held in a storage room at 1℃ for 6 weeks. Quality characteristics and percentage marketability were then investigated. As a control, Mushrooms were placed in storage with no initial cooling. The quality factors impacting marketability of fresh oak mushrooms were color change and appearance of decay. Off-odor did not occur or developed only slightly, so it did not affect oak mushroom quality within 6 weeks of low temperature storage. In all treatment groups, the shelf life in which 100% marketability was maintained was up to 3 weeks. At week 5, percent marketability of the 3 treatment groups 1 hour room cooling treatment at 0℃, 1 hour forced air cooling, and control was 100%. 80% In the group that underwent 30 min forced air cooling retained 80% marketability, and the group exposed to 1 day in room cooling at -3℃ retained 86.7% marketability. At week 6 of 1℃ storage, the marketability ratio was 80% in the 1 day room cooling at 0℃ group, 66.7% in the 1 day room cooling at 3℃ group, 46.7% in the 1 hour forced air cooling group, and 33% or less in all other treatment groups. Therefore, the most suitable initial cooling parameter to extend shelf-life of oak mushrooms is 1 day of in room cooling at 0℃ immediately after harvest.

• Proceedings of the Korea Water Resources Association Conference
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• 2004.05b
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• pp.794-798
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• 2004

현재의 물공급중심의 물관리에서 물수요중심의 물관리로의 전환을 위하여 수로에 설치되는 수문의 기능을 고려하여 새로운 수문을 개발하였다. 본 연구에서는 제수문의 역할로서 자동으로 수로 내 수위를 유지하는 무동력 자동 재수문과 태양광을 이용하여 수문개폐를 행하는 태양광 전동 수문, 논의 급수를 포장의 담수위 현황에 따라 자동으로 행하는 자동물꼬등이 포함되어 있다. 무동력 및 태양광으로 운영되는 수문의 개발에 따라 부족한 농촌인력과 고령화에 따른 유지관리인력의 절감과 자동물꼬에 의한 급수에 따라 농업용수절감이 기대되며 말단포장이 중심이 된 효율적인 물수요중심의 물공급 체계가 확립될 것이다.

• Korean Journal of Organic Agriculture
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• v.20 no.3
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• pp.411-422
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• 2012

To investigate the possibility of sustainable agriculture in no-tillage pepper this study was carried out in vinyl greenhouse with organic cultivation having no pesticide certification. 1. Growth and yield in pepper cultivation General growth in pepper was suppressed with decreasing hill spacing, primary branch length, and stem width. Fruit diameter and fruit weight in no-tillage increased significantly, and yield of pepper increased by 10% compared with conventional tillage. From results organic cultivation in no-tillage improved a quality of pepper compared with conventional tillage. 2. Production cost of conventional tillage and no-tillage Production cost of conventional tillage and no-tillage was not different in seed cost, inorganic fertilizer cost, pesticide cost, repair cost, light agricultural tool cost, agriculture facilities depreciation cost and so on. Intermediary goods cost in no-tillage was decreased by 11% for organic fertilizer cost, light and heat expenses and power rate, heavy agricultural tool cost, and repairing expenses compare with conventional tillage. Employment effort cost and work effort cost were decreased, and farm income and farm income rate were increased by 11% and 5%, respectively, in no-tillage. In this work, yield and gross income were increased by 10% and 25%, respectively, in no-tillage. Therefore material cost, intermediary goods cost, working expensive, farm income, and income rate were increased by 34%, 3%, 2%, 52% and 22%, respectively.

• Journal of Bio-Environment Control
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• v.30 no.4
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• pp.441-447
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• 2021

It were investigated changes in internal and external temperature, relative humidity using tyvek, weedstop, and 35% shading net as covering material to reduce the freezing damage of 'Shiranui' hybrid mandarin grown in open field. It were also evaluated canopy covering effect and LT₅₀ of leaves by covering material when it was cold at -2℃. In tyvek, temperature difference between inside and outside was low at the height of 1.5m and was high at 0.4m. The relative humidity differed greatly between day and night, and was high at 6-8 a.m. At -2℃, Sum of temperature at the height of 1.5m of canopy for 24-hour after covering were at 3.4℃ higher in tyvek than in control. The LT₅₀ of leaves was at 1.51℃ in tyvek, 1.33℃ in withstop, and 1.61℃ in 35% shading net lower than in control. Considering thermal insulation and relative humidity in canopy, tyvek is expected to reduce low temperature damage when covering after making a fine hole for ventilation.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.24 no.3
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• pp.67-74
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• 1979

Peanut was cultured with varying planting density and sowing date with and without vinyl-film mulching. Vinyl-film mulching raised soil temperature 4.6$^{\circ}C$ higher than the non-mulched during April and early May, but later-on the soil temperature was similar between the two treatments. The ripening and slender grain ratio increased with closer spacing and earlier sowing. Compared with ordinary cultural practices of May 10th sowing without mulching the peanut yield increased by 9% by mulching sown May 10th, and by 49% by mulching and early sowing April 20th.

• Journal of agricultural medicine and community health
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• v.28 no.2
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• pp.1-14
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• 2003

Objectives: This paper introduces need and supply level of rural mental health care service and especially focuses on the evaluation for the community mental health programs of Public Health Centers(PHCs) in rural areas as the facilities for primary mental health care. Methods: We defined the need as prevalance rate and service utilization rate, for which reviewed the results of the epidemiological study of mental disorders using Korean Composite International Diagnostic Interview surveyed on a nationwide scale in 2001. Supply was appraised in terms of psychiatric beds and primary mental heath care facilities such as private psychiatric clinics, facilities for social rehabilitation, PHCs running community mental health programs. For this, we reveiwed a variety of annual reports related mental health published by Ministry of Health and Welfare. To evaluate the community mental health programs of PHCs in rural areas, we selected. randomly samples out of the 3rd community health plans including the contents of community mental health programs, which submitted by 89 rural counties and 44 cities mixed with rural areas, and used the program's guideline established by central government as a standard. Results: Prevalence rates of major psychiatric diseases such as schizophrenia, alcoholism, major depression, anxiety disorder were higher in rural area than in urban area and 8.9% of psychiatric patients in both areas stayed at homes contacted with mental health manpower more than one time during the last year. Psychiatric beds were sufficiently supplied, but urban area had less beds than rural area contrary to general health care service. Psychiatric clinics were supplied very insufficiently in rural areas and PHCs bridged the gap instead. However rural PHCs got less financial support for community mental health programs from higher positioned agencies than urban PHCs. Rural community health programs not supported hardly worked out. Conclusions: Central government should consider a special policy for rural primary mental health care, because private psychiatric clinics can't be introduced in rural areas due to demand-deficiency and the financial independence of rural counties was very vulnerable.

• Journal of Life Science
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• v.30 no.12
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• pp.1109-1117
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• 2020

In order to verify whether Zophobas atratus is an edible insect, the nutrients and harmful substances of Z. atratus larvae reared with an artificial diet (AD) and wheat bran (WB) were compared and analyzed. Based on dry weight, the crude protein content of Z. atratus larvae reared with an AD was 62.4%, 1.4 times higher than that of those reared with WB (45.2%). The crude fat content was 20.5% in the AD group, 2.3 times less than in the WB group (46.3%). The leucine content was 1.4 times higher in the AD group (4.2%) than in the WB group (3.0%). The glutamic acid content of nonessential amino acids was 1.3 times higher in the AD group (7.0%) than in the WB group (5.3%). The oleic acid content was 1.4 times higher in the WB group (37.0%) than in the AD group (26.7%). The potassium content was 1.1 times higher in the AD group (975.9 mg/100 g) than in the WB group (872.9 mg/100 g). According to the results of the toxic substances analysis, the lead and cadmium levels of the WB and AD groups were standard for edible insects. Pathogenic microorganisms, such as E. coli and salmonella, were not detected in either group. According to the results of the present analysis of nutrition and harmful substances, Z. atratus larvae raised on an AD are safe and contain various nutrients. Therefore, such larvae could be useful sources of food and feed.

• Journal of the Korean Society of International Agriculture
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• v.23 no.5
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• pp.537-545
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• 2011

This study was conducted to obtain basic information on physiological and proteomic responses of barley seedlings to salt stress. Shoot dry weight decreased significantly as the level of soil salinity increased. Salt stress-induced decrease of relative shoot dry weight was lower in cv. "Sanglok" than in cv. "Sunwoo". Under the salt stress, SPAD value decreased, and the value was higher in cv. "Sanglok" than in cv. "Sunwoo". Sodium ion content in the leaves increased as NaCl concentration increased, and the content was higher in cv. "Sunwoo" than in cv. "Sanglok". The K⁺/Na⁺ ratio was higher in cv. "Sanglok" than in cv. "Sunwoo". Salt stress-induced alterations in protein expression of the leaves were detected by two dimensional electrophoresis, and 47 protein spots showing altered expression were selected. Among the selected protein spots, 17 protein spots were up-regulated and 28 spots down-regulated in cv. "Sanglok". In cv. "Sunwoo", 14 protein spots were up-regulated and 27 spots down-regulated. Out of 47 deferentially expressed protein spots, 18 protein spots were identified using mass spectrometry and NCBI protein database. Among the identified proteins, ten proteins are known to be involved in various stress responses, but the others are not directly involved in stress responses.

• Journal of the Korea Organic Resources Recycling Association
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• v.32 no.1
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• pp.5-11
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• 2024

Objective of this study was to evaluate the effect of organic fertilizer application on yield, soil chemical properties and soil organic carbon (SOC) in Korean cabbage cultural field. The experimental treatments consisted of none fertilizer (NF), NPK (inorganic fertilizer, N-P₂O₅-K₂O : 320-78-198 kg ha^-1), Organic fertilizer (OF 50, 100, 150% on application rate of standard 110 kg ha^-1 as N, topdressing: 210 kg ha^-1 as inorganic fertilizer). In experimental results, the growth characteristics and yields were not significantly different among the treatments. There was no significant difference in soil pH, available phosphate, ammonium nitrogen and exchangeable potassium, while organic matter, electrical conductivity and nitrate nitrogen were increased when organic fertilizer application. Also, SOC was increased with the application of organic fertilizers. These results showed that pre-application of organic fertilizer might be effective in a carbon storage in the field soil cultivating Korean cabbage.

• Health Policy and Management
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• v.6 no.1
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• pp.163-190
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• 1996

본 논문은 미국 농촌병원의 경영전략과 관련하여 몇가지 가설을 검증한 연구결과이다. 구체적으로 1987년부터 1991년 사이의 미국 농촌병원들의 기본적 경영전략 지향 형태와 변화 추세, 경영전략과 환경 및 병원특성과의 관계, 그리고 경영전략과 재정적 성과의 관계 등이 연구되었다. 본 연구의 자료수집은 미국 농촌지역의 모든 종교병원과 영리병원, 그리고 무작위 표본추출로 뽑힌 50%의 공공병원 및 기타 비영리 병원의 최고경영자를 대상으로 1989년에 우편설문조사를 통해 이루어졌으며 회수된 설문지 중 사용가능한 640개 병원 (응답율 43%)의 자료가 분석 이용되었다. 조사대상병원의 환경적 특성자료는 지역자원 파일(Area Resource File)에서 수집하였고, 병원특성 및 재정적 성과자료는 미국병원협회 연감(Annual Survey of Hospitals)에서 구하였다. 응답병원과 비응답병원간에 환경 및 병원특성에 유의한 차이는 없는 것으로 나타났다. 본 연구에서는 Miles와 Snow가 개발한 방어형(defender), 분석형(analyzer), 진보형(prospector), 반응형(reactor)의 네가지 경영전략지향 형태를 사용하여 분석하였다. 본 연구의 결과를 요약하면 다음과 같다. 1) 미국 농촌 병원들은 과거에는 방어형 및 분석형의 경영전략 지향을 보이다가 점차 반응형과 진보형으로 변화해 가고 있다. 2) 가장 뚜렷한 경영전략 지향의 변화추세는 방어형이 급격히 줄고 반응형이 크게 늘어나고 있다는 점이다. 이는 많은 병원들이 급격한 환경변화에 적응하기 위해 일관된 전략 지향보다 융통성 있고 탈력적인 경영전략을 선호하고 있음을 나타낸다. 3) 농촌병원들은 경영전략의 급격한 변화를 추구하지는 않을 것이라는 가설을 뒷받침할 근거는 없는 것으로 나타났다. 이는 급격한 의료환경의 변화로 인해 병원들이 다양한 경영전략의 변화를 모새하고 있는 것으로 볼 수 있다. 4) 대부분의 외부환경 및 병원특성은 병원의 전략지향의 선택에 큰 영향을 미치지 않는 것으로 나타났으나 인구 10,000명당 의사수, 병상규모, 위탁경영 여부, 병상점유율, 소유형태 등의 변수들이 경영전략 지향 형태에 따라 유의한 차이가 있는 것으로 나타났다. 5) 경영전략 지향이 상이한 병원들은 세부 실천전략에 있어서도 치이가 있을 것이라는 가설을 일부 전략에 있어서 사실인 것으로 나타났다. 즉 방어형 병원들은 진보형이나 반응형 병원들보다 내부관리전략, 다양화 전략, 의사유치전략, 직원복지전략 등에 있어서 소극적인 것으로 나타났다. 6) 비록 방어형 병원들이 다른 형태의 병원보다 낮은 재정적 성과를 보이고 있었지만 본 연구의 자료로는 경영전략지향과 재정적 성과간의 인과관계를 구명할 수 없었다. 또한 재정적성과에 따른 전략지향의 변화여부도 통계적으로 유의한 관계가 있지는 않은 것으로 나타났다. 이는 각각의 전략지향들이 환경에 따라 나름대로 장점을 가질 수 있으며 반드시 어느 한가지의 전략지향만이 최선은 아님을 시사해주고 있다. 7) 병원의 경영전략 변화는 환경의 변화와 더블어 그러한 변화에 적응할 수 있는 내부의 능력과도 관계가 있는 것으로 보인다. 이상의 연구결과에 따르면 미국의 농촌병원들은 급격한 환경변화에 적응하기 위하여 다수의 병원들이 환경 및 벼원특성에 관계없이 생존을 위한 전략적 노력을 기울이고 있음을 알 수 있다. 끝으로 이러한 연구결과는 최근 어려운 경영환경에 처한 한국의 농촌병원들도 합리적인 경영을 위해서는 병원이 처한 외부환경분석과 함께 내부의 능력에 적합한 경영전략의 방향을 설정하고 그에 따른 실천적 세부 경영전략을 수립해야만 한다는 것을 시사해 주고 있다.