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전산유체역학 기법을 이용한 돈사 내 습식 공기 정화기의 적정 위치 설계
권경석,이인복,황현섭,홍세운,서일환,최지선,송상현,문운경,Kwon, Kyeong-Seok,Lee, In-Bok,Hwang, Hyun-Seob,Bitog, Jessie.P.,Hong, Se-Woon,Seo, Il-Hwan,Choi, Ji-Sun,Song, Sang-Hyeon,Moon, Oun-Kyung 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3
In South Korea, as the living standard has been getting higher, meat consumption is steadily increasing. To meet the country's demand, livestock houses become larger and wider with increased raising density. In larger livestock houses, pollutants such as flake of pig skin, excrement, odor, various dusts and noxious gas like ammonia are excessively accumulated inside the facility. These will cause weak immunity for the pigs, diminution of productivity and degeneration of working condition. These problems can be solved through the ventilation performance of the facility. In the winter time, ventilation must be controlled to minimum to maintain a suitable thermal condition. However, this affects the other internal environmental condition because of the minimum ventilation. The installation of "wet air cleaner" especially in the winter time can be an alternative solution. For efficient application of this machine, there is a need to understand the existing ventilation condition and analyze the interaction of existing ventilation system with the wet air cleaner considering its appropriate location. In this study, the existing ventilation system as well as the internal environmental condition negatively inside the facility with the wet air cleaner has been studied using CFD technology. The CFD simulation model was validated from the study conducted by Seo et al. (2008). Results show that the elimination rate of ammonia was 39.4 % and stability could be improved to 35.1 % (Comparing case 5 to 1 where wet air cleaner machine was not used). It can therefore be concluded that case 5 shows the optimum location of a wet air cleaner in the livestock house.
복강경하 전자궁절제술에서 자궁의 무게에 따른 합병증의 비교
전승주 ( Seung Joo Jeon ),이지원 ( Ji Won Lee ),황선아 ( Sun Ah Hwang ),박한나 ( Han Na Park ),서지선 ( Ji Seon Seo ),임소이 ( So Yi Lim ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.2
목적: 양성 부인과 질환에서 복강경하 전자궁절제술을 시행할 때 자궁의 무게가 수술 후 합병증과 단기 결과에 미치는 영향을 알아보고자 하였다. 연구방법: 복강경하 전자궁절제술을 시행한 771명의 의무기록을 후향적으로 조사하였다. 본 연구에 포함된 환자들은 2006년 3월부터 2010년 12월까지 가천의과학대학교 길병원에서 자궁근종이나 선근증으로 복강경하 전자궁절제술을 시행한 경우를 대상으로 하였다. 환자는 자궁무게에 따라 3군으로 나누었다. 1군은 자궁무게가 250 g 미만으로 435명, 2군은 250-500 g으로 272명, 3군은 자궁무게가 500 g 이상으로 64명이었다. 각 군의 나이, 체질량지수, 분만력, 재원일수, 수술시간, 수혈여부, 수술중 실혈량, 개복수술로의 전환, 수술 후 합병증 등을 조사하였다. 결과: 3군 사이에 수술 후 합병증의 의미있는 차이가 없었다. 요관 손상, 재수술과 같은 주요 합병증은 각 군에서 모두 발생하였고, 통계적 의미 있는 차이가 없었다. 수술시간과 실혈량은 자궁무게가 증가함에 따라 약간 증가하는 경향을 보였으나 통계적으로 의미가 없었다. 결론: 자궁이 커도 복강경하 전자궁절제술을 안정적으로 시행할 수 있었으며, 자궁이 큰 경우도 복강경수술의 대상이 될 수 있다. Objective: To evaluate the potential effect of uterine weight on short-term outcome and incidence of complications after total laparoscopic hysterectomy (TLH) for a benign gynecologic disease. Methods: A retrospective medical record review of 771 cases where TLH was performed. Patients included in this study underwent TLH for either myoma or adenomyosis at Gil Hospital, Gachon University of Medicine and Science, from March 2006 through December 2010. Participating patients were stratified into three groups: group 1 with uterine weight less than 250 g (n=435), group 2 with uterine weight 250 to 500 g (n=272), and group 3 with uterine weight more than 500 g (n=64). The groups were compared based on total operation time, estimated blood loss, length of postoperative hospital stay, observations of postoperative complications, and rate of conversion from to TLH to laparotomy. Results: We discovered no statistical difference between the three groups in terms of overall postoperative complications or short-term surgical outcomes. Major complications such as ureter injury and necessity for reoperation occurred in each group. Operation time and estimated blood loss increased slightly as uterine weight increased, but, there was no statistical significance. Conclusion: TLH can be successfully performed, even in cases of enlarged uterus. Patients with an enlarged uterus are suitable candidates for TLH.