• 한국초지조사료학회지
• /
• 제10권2호
• /
• pp.102-109
• /
• 1990

This experiment was carried out to study the effect of pure mineral nitrogen fertilizing on dry matter yield of grassland and the advisable mineral nitrogen amounts in long duration under practical conditions at the "Federal Institute for Agriculture in the Alps" in Austria. The application rates were 0, 30, 60,90 and 120 kg N/ha/cut, the cutting regimes 3-, 4-, 5- and 6-cuts/year. In order to explain the nitrogen-profitability were determined that 1 kg pure mineral nitrogen have to produce 8 - 16 kg DM/kg N in dependence on cutting regimes and requiring of nitrogen efficiencies. The results were as follows: 1. With only PK-fertilizaing average dry matter yields from 4.0 to 7.6 tons per ha and year were obtained. 2. Within all applied cutting regimes 60 kg min. Nlhalgrowth have proved to be the most efficient application rate witn 13 - 24 kg DM/kg N in dependent of cutting regimes. Comapred with only PK-treatment the DM yields increased by 3.9 - 4.7 t/ ha nad year. 3. By the sigmaformed process of Input-Output curve the highest marginal yield (the "most efficient" Ndressing rate) per ha and year was calculated: 152 kg N at 3-cut regimes, 204 kg N at 4-cut regimes, 220 kg N at 5-cut regimes and 240 kg N/ha/year at 6-cut regimes. 4. With required efficiencies of 16 and 12 kg DM/kg N 240 - 300 kg N per ha and year respectively would have to be applied at 3-cut regimes; with required efficiencies of 12 and 10 kg DM/kg N at 4-cut regimes the appropriate figures ranged from 320 to 420 kg N/ha and year, at 5- and 6-cut regimes and efficiencies of 10 and 8 kg DM/kg N results of 360 - 460 kg N and 380 - 500 kg N respectively were obtained. 5. At the relatively dry location Piber the highest dressing rates were needed in order to obtain the efficiencies from 8 to 16 kg DM/kg N, about 30 - 60 kg N/ha/year more than at the relatively moist location Admont.ist location Admont.

• 화훼연구
• /
• 제19권4호
• /
• pp.197-201
• /
• 2011

본 연구는 고품질 절화백합 생산을 하기 위해 실제 유통 중인 7품종을 구주를 달리 하여 식재하고, 채화 후 구주와 품종이 절화품질에 어떠한 영향을 미치는지 알아보고자 수행하였다.절화품질을 측정한 결과, 화뢰장은 'Medusa', 품종, 절화장은 'Mother's Choice' 품종에서 가장 긴 것으로 확인되었다. 줄기휨각도는 'Mother's choice' 품종과 'Ismael' 품종을 제외한 모든 품종이 $30^{\circ}$ 이상으로 나타났다. 화경장, 화서장, 경경, 꽃 수, 중량 모두 구주가 클수록 좋은 결과를 보였다. 절화품질 중 화뢰장, 절화장, 꽃 수에 영향을 미치는 요인은 구주의 크기이며, 휨각도는 품종과 구주의 크기 모두 영향을 받지 않는 것으로 나타났다. 이와같이 절화품질은 품종보다는 구주에 영향을 받으며 크기가 커질수록 좋은 결과가 나타나는 것으로 확인되었다.

• Journal of Animal Science and Technology
• /
• 제63권3호
• /
• pp.614-625
• /
• 2021

This study investigates how visual appearance of pork cuts affects consumer preference. Images of pork belly, Boston butt, and loin were chosen on the basis of visible fattiness and used to analyze consumers' perception of the appearance of each pork cut. Meat color and visible fat proportion of images of pork cuts were analyzed by the researchers before conducting the survey. A total of 211 pork eaters evaluated the pork cuts based on appearance (lightness of color, redness, visible fat proportion, and fat distribution), preferability, and overall acceptability. Also, muscle pieces from different pork cuts were taken and the relative area composition of muscle fibers was measured. Based on survey results, correlation between visual traits and preferences of each pork cut was analyzed. The survey results showed that preferred pork appearance varied as per each individual's favorite pork cut. Also, the respondents evaluated visual characteristics and preference for each pork cut differently possibly due to the different visual characteristics of each cut. Correlation analysis between visual traits and preference indicated that overall acceptability of pork cuts was mainly influenced by fat preference, followed by color preference. Fat and color preferences for each pork cut were affected by various visual attributes including redness, lightness of color, visible fat proportion, and fat distribution, but their effects were considerably varied among different pork cuts. Thus, Korean consumers perceived and assessed pork appearance using various quality cues but the evaluation depended on which cut was being observed.

• 사상체질의학회지
• /
• 제34권4호
• /
• pp.27-37
• /
• 2022

Objectives The purpose of this study is to propose a method to more specifically identify Sasang constitutional risk factors of metabolic syndromes by adjusting the cut-off value of Korea Sasang Constitutional Diagnostic Questionnaire (KS-15). Methods Data of 1997 participants in Korean medicine Daejeon Citizen Cohort study (KDCC) were analyzed. Metabolic syndrome was defined according to the NCEP-ATP III, lifestyle information, and hematologic information including KS-15 and demographic characteristics were used as covariates. Results The 179 subjects with metabolic syndrome accounted for 9.0% of the total. As a result of determining the Sasang constitution for the KS-15 response based on the cut-off values (approximate 0.33), 0.5, and 0.6 of the constitutional score, when performed at the 0.6 cut-off model, the odds ratio of TE was 2.46 which showed a statistically significantly higher risk than the borderline group. For the accuracy of the model and the Area under the curve (AUC), the model accuracy based on the original cut-off of the KS-15 was 0.902 and AUC was 0.737. The accuracy of the model with cut-off of 0.5 and with of 0.6 were 0.904 and 0.902, respectively, and the AUCs were 0.687 and 0.741, respectively. Conclusion In this study, we confirmed that it is effective to increase the cut-off value of KS-15 to 0.6 in the metabolic syndrome risk model. It is expected that this could increase the accuracy of identifying high-risk groups for metabolic syndrome.

• 대한한방소아과학회지
• /
• 제37권4호
• /
• pp.1-14
• /
• 2023

Objectives This study aimed to evaluate the correlation between pediatric weakness scale scores and growth indices. Furthermore, we intended to calculate the cut-off values for diagnosing Kidney Weak Children through growth indices. Methods A total of 193 patients, aged 6 - 12 years, underwent both the pediatric weakness scale and bone age assessment, and the correlations between the pediatric weakness scale and growth indices were analyzed. Moreover, the cut-off values for diagnosing Kidney Weak Children were calculated. Differences in bone age and predicted height between the normal group and Kidney Weak Children, classified according to the calculated cut-off values, were analyzed. Results The weakness of the Shin or kidney system was significantly correlated with the height percentile, weight percentile, differences in current height percentile and mid parental height percentile, differences in predicted height and mid parental height, and differences in bone age and chronological age. When the criteria for diagnosing Kidney Weak Children is set at "height percentile of ≤25% and weight percentile of ≤25%", the sensitivity and specificity of the cut-off value were maximized. The cut-off values for weakness of the Shin or kidney system were 9 in children aged 6 - 9 years and 10 in children aged 10 - 12 years. Conclusions To diagnose Kidney Weak Children, the cut-off values of weakness of the Shin or kidney system were 9 in children aged 6 - 9 years and 10 in children aged 10 - 12 years.

• Clinical Endoscopy
• /
• 제55권3호
• /
• pp.434-442
• /
• 2022

Background/Aims: Covered self-expandable metallic stents (CMSs) are widely used for malignant distal biliary obstructions (MDBOs) caused by pancreatic carcinoma. This study compared the efficacy and safety of the laser-cut-type and braided-type CMSs. Methods: To palliate MDBOs caused by pancreatic carcinoma, the laser-cut-type CMSs was used from April 2014 to March 2017, and the braided-type CMSs was used from April 2017 to March 2019. The tested self-expandable metallic stents were equipped with different anti-migration systems. Results: In total, 47 patients received CMSs for MDBOs (24 laser-cut type, 23 braided-type). The time to recurrent biliary obstruction (TRBO) was significantly longer in the braided-type CMSs (p=0.0008), and the median time to stent dysfunction or patient death was 141 and 265 days in the laser-cut-type CMSs and braided-type CMSs, respectively (p=0.0023). Stent migration was the major cause of stent dysfunction in both groups, which occurred in 37.5% of the laser-cut-type CMSs and 13.0% of the braided-type CMSs. There were no differences in the survival duration between the groups. Conclusions: The TRBO was significantly longer for the braided-type CMSs with an anti-migration system than for the laser-cut-type. Stent migration tended to be less frequent with the braided-type CMSs than with the laser-cut-type CMSs.

• 한국방재학회:학술대회논문집
• /
• 한국방재학회 2007년도 정기총회 및 학술발표대회
• /
• pp.505-508
• /
• 2007

Usually, cut-slope is the term that call rock slope. Therefore, the cause of instability of cut-slope is influenced generally in lithological and structure geological qualities including weathering disintegration. Through the several case studies, we could confirm that stabilization countermeasure also should be based in geological properties.

• 대한수학회보
• /
• 제50권2호
• /
• pp.441-444
• /
• 2013

It is shown that any two-dimensional globally hyperbolic spacetime with noncompact Cauchy surfaces has no null cut points.

• 한국버섯학회지
• /
• 제19권3호
• /
• pp.234-245
• /
• 2021

큰느타리의 수출시 유통 기한 연장을 목적으로 수확시 품질 등급, 대와 자실체 사이를 잘라낸 손질 처리 유무, 그리고 관행 OPP 봉지에 끈묶음한 포장 방법을 개선시켜 트레이용기에 넣은 후 밀봉처리시 효과를 구명하고자 하였다. 수확시 품질 등급은 수확전 재배사의 온도를 9~11℃ 낮추어 적응시킨 버섯을 특품으로, 관행 13~15℃로 적응시킨 버섯을 상품으로 설정하였다. 선별한 특품과 상품 버섯을 이용하여 손질 및 포장방법으로 3처리구를 두었다. 첫째는 절단 손질 후 OPP 봉지에 넣어 끈묶음한 포장(Cut & OPP), 둘째는 손질하지 않고 OPP 봉지에 넣어 끈묶음한 포장(Uncut & OPP), 마지막으로 개선포장방법으로 절단 손질한 후 트레이용기에 넣고 밀봉한 포장(Cut & Tray)이었다. 포장 완료한 버섯 처리구를 0℃ 저장고에 42일간 보관하면서 포장 내부의 기체 조성, 품질 요인의 변화, 신선 품질에 대한 관능평가를 실시하였다. 특품과 상품의 버섯 모두 Cut & Tray, Cut & OPP, 그리고 Uncut & OPP 처리 순으로 전반적으로 신선도가 높게 유지되었다. 특품 버섯의 유통 수명은 Cut & Tray 처리의 경우 30일, Cut & OPP 처리의 경우 28일, Uncut & OPP 처리의 경우 21일이었고, 상품 버섯의 유통 수명은 Cut & Tray 처리시 22일, Cut & OPP 처리시 17일, 그리고 Uncut & OPP 처리시 14 일이었다. 신선 버섯의 품질에 영향을 미치는 요인은 갓과 대의 갈변과 부패 지수였다. 특히, 버섯 대의 아랫부분의 갈변과 그에 연관된 표피색 a^*값과 b^*값의 변화가 품질 저하의 주요인이었다.

• 한국식품위생안전성학회지
• /
• 제37권2호
• /
• pp.87-96
• /
• 2022

본 연구에서는 온라인 및 오프라인 마켓에 유통 중인 100건의 신선편의 절단 과일을 계절별로 수집하고 50건의 신선편의 절단 채소와 50건의 밀 키트(월남 쌈 및 무 쌈) 내 절단 채소에 대하여 위생지표세균, 효모 및 곰팡이를 정량적으로 분석하였으며, 5개의 식중독균(B. cereus, S. aureus, L. monocytogenes, Salmonella spp., E. coli O157:H7)을 정성 및 정량적으로 분석하였다. 전체적으로 밀 키트 채소의 일반세균, 대장균군, 효모 및 곰팡이의 평균 오염수준이 신선편의 절단 채소 및 절단 컵 과일보다 높은 것으로 나타났다. 대장균은 두 식품 유형에서 모두 검출되지 않았으며 병원성 식중독균의 경우, S. aureus만 총 200건 중 6건이 검출되었는데(3%), 절단 과일 중 파인애플 1건에서 S. aureus가 0.6 log CFU/g로 검출이 되었고, 분리된 균주는 non-enterotoxin인 것으로 확인되었다. 신선편의 절단 채소 중 절단 채소 셀러리에서 1건, 밀 키트 채소 4건에서 S. aures 정성 검출되었으나, 정량적 분석 결과 밀 키트 채소인 적색 양배추 1건에서만 4.8 CFU/g 오염수준을 확인 하였으나 즉석섭취·편의식품류의 S. aureus 규격(100 CFU/g) 이하임을 확인하였다. 절단 채소에서 검출된 S. aureus의 독소형을 분석한 결과 셀러리와 적색 양배추에서 분리된 균이 각각 seg 와 sei 독소형임을 확인하였다. 따라서 절단 채소 제품 공정에서, 특히 밀 키트 채소에서의 황색포도상구균의 오염에 대하여 더 엄격한 관리방안이 필요한 것으로 확인되었다. 본 연구에서 분석한 50여종의 신선편의 식품과 밀 키트 제품에서는 모두 원포자충 및 작은와 포자충은 검출되지 않았으나 원충류에 의한 식중독 사고를 예방하기 위해 신선편의 식품의 세척 과정에 대한 지속적인 주의가 필요할 것으로 사료된다.