수소 난류 비예혼합 화염에서의 질소산화물 배출특성에 관한 연구

Thesis (doctoral)--서울대학교 대학원 :기계항공공학부 항공우주공학과,2001.Docto

주기적 데토네이션을 이용하는 모델추진 기관에 대한 실험적 연구

학위논문(석사)--서울대학교 대학원 :항공우주공학과,1995.Maste

An Empirical study on the diffusion of ERP in Korean companies

학위논문(박사)--서울대학교 대학원 :산업공학과,2000.Docto

Fabrication and tribological behavior of metal nanohoneycomb structures

Maste

(A)Study on the test-based FBS application to vehicle subframe

학위논문(석사)--서울대학교 대학원 :기계항공공학부,2005.Maste

참돔(Pagrus major) 알의 수정, 부화 및 부화 자어의 기형률에 미치는 산란시기의 영향

This study aimed to investigate the effect of five different spawning periods [from March 31 to April 9 (SP1), April 10 to 19 (SP2), April 20 to 29 (SP3), April 30 to May 9 (SP4), and May 10 to 19 (SP5), 2024] on the egg fertilization and hatching rates and the deformity rate of hatched larvae of red seabreamPagrus major broodstock (mean weight ♀ 2,211.9 g, ♂ 2,060.6 g) from 14.8 to 17.2°C. Eggs produced in SP1 under conditions below 16.0°C exhibited lower fertilization rates (71.5%), hatching rates (70.8%), and survival rates (51.3%) compared to those of SP2, SP3, SP4, and SP5. The diameters of egg and oil globules in SP4 and SP5 were higher than those of SP1, SP2, and SP3. However, larvae deformity rates are not affected by spawning periods. These results indicated that eggs produced in SP4 and SP5 maintained over 16°C were well in various indices and suitable for commercial aquaculture under our experimental conditions. This study provides valuable insights for managing seed production of red seabream in commercial hatchery.22Nkc

Factors Influencing the Cognitive Degree of Dry Eyes in Nursing Students

Purpose: This study aimed to identify the factors that influence the cognitive degree of dry eyes in nursing students. Methods: This was a cross-sectional descriptive study. Data was collected using self-administered questionnaires (cognitive degree of dry eyes, Standard Patients Evaluation of Eye Dryness [SPEED] questionnaire, and McMonnies questionnaire) from 233 nursing students of E university. Results: The mean scores for the cognitive degree of dry eyes, SPEED, and McMonnies were 21.43, 8.02, and 6.39, respectively. The cognitive degree of dry eyes was found to have a significantly positive correlation with McMonnies and SPEED scores. Additionally, the factors that influenced the cognitive degree of dry eyes among nursing students were hours of using smart phones, McMonnies score, and the SPEED score. Conclusion: The results of this study indicate that interventions need to developed and applied to reduce and control the cognitive degree of dry eyes among nursing students