건설공사의 재시공 현황에 대한 원인분석 및 개선안에 관한 연구 : 공동주택의 공조공사를 중심으로 한 조사 및 사례연구

이기한,유철종,김용수 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2

This study aims to provide some efficient and effective ways to prevent reconstruction. For this study, the analysis on the current situation and various causes of reconstruction has been performed by using questionnaire survey and case studies from construction sites. The results of this study are as follows: 1.Causes of reconstruction occurrence through case studies show construction inability including technician' idleness(42.2%), misunderstanding of specification(26.7%) and imperfect specification(15.6%). 2.Influence of reconstruction on construction productivity is analysed as the following; increase of 3.8% in construction duration, increase of 5.7% in construction cost, and decrease of 4.4% in construction quality. 3.In order to prevent reconstruction, it is required to file and analyse reconstruction data, systemize construction management, train construction worders with systematic work procedural manual, and check design documents precisely. 4.Also it is necessary to develop new construction technology such as simplification, mechanization, dry-construction of work process.

The effectiveness of systemic and endovascular intra-arterial thrombectomy protocol for decreasing door-to-recanalization time duration

Kim Su Chel,Lee Chang-Young,Kim Chang-Hyun,Sohn Sung-Il,Hong Jeong-Ho,Park Hyungjong 대한뇌혈관외과학회 2022 Journal of Cerebrovascular and Endovascular Neuros Vol.24 No.1

Objective: Variable treatment strategies and protocols have been applied to reduce time durations in the process of acute stroke management. The aim of this study is to investigate the effectiveness of our intra-arterial thrombectomy (IAT) protocol for decreasing door-to-recanalization time duration and improve successful recanalization. Methods: A systemic and endovascular protocol included door-to-image, image-to-puncture and puncture-to-recanalization. We retrospectively analyzed the patients of pre- (Sep 2012–Apr 2014) and post-IAT protocol (May 2014–Jul 2018). Univariate analysis was used for the statistical significance according to variable factors (age, gender, the location of occluded vessel, successful recanalization TICI 2b-3). Independent t-test was used to compare the time duration. Results: Among all 267 patients with acute stroke of anterior circulation, there were 50 and 217 patients with pre- and post-IAT protocol. Age, gender, and the location of occluded vessel have no statistical significance (p>0.05). In pre- and post-IAT group, successful recanalization was 39 of 50 (78.0%) and 185/217 (85.3%), respectively (p<0.05). Post-IAT (48.8%, 106/217) group had a higher tendency of good outcome than pre-IAT group (36.0%, 18/50) (p>0.05). Pre- and post-IAT group showed 61.7±21.4 vs. 25±16.0 (p<0.05), 102.0±29.8 vs. 82.7±30.4 (min) (p<0.05), and 79.1±47.5 vs. 58.4±75.3 (p<0.05) in three steps, respectively. Conclusions: We suggest that the application of systemic and endovascular IAT protocols showed a significant time reduction for faster recanalization in patients with LVO. To build-up the well-designed IAT protocol through puncture-to-recanalization can be needed to decrease time duration and improve clinical outcome in recanalization therapy in acute stroke patients.

EFFECTS OF BIOFLOC ON GROWTH AND IMMUNE RESPONSE OF FLESHY SHRIMP, Fenneropenaeus chinensis AND ITS BIOFLOC FEEDING EFFICIENCIES

Su-Kyoung Kim,Hyung-Chel Seo,Su Kyoung Kim,In-Kwon Jang 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

Middle temporal vein access for transvenous embolization of Cavernous sinus dural arteriovenous fistula: A case report and review of literature

Kim Su-Chel,Kim Jae-Hyun,Kim Chang-Hyun,Lee Chang-Young 대한뇌혈관외과학회 2022 Journal of Cerebrovascular and Endovascular Neuros Vol.24 No.1

Transvenous endovascular treatment is the first choice for treating most cavernous sinus dural arteriovenous fistulas (CDAVFs). Among several available venous routes, the inferior petrosal sinus is the most commonly used. We report a case of CDAVF treated with endovascular treatment via the middle temporal vein (MTV). A 65-year-old man presented with unilateral chemosis and exophthalmos for approximately two months. Digital subtraction angiography showed a right CDAVF with predominant venous drainage toward the right superior ophthalmic vein. The superior ophthalmic vein primarily drained into the dilated MTV. Both sides of the inferior petrosal sinus were occluded; therefore, transvenous embolization was performed via the MTV route. The fistula was completely obliterated. The patient’s symptoms improved and the postoperative course was uneventful. The transfemoral approach via the MTV to treat CDAVF provides a crucial alternative when other venous routes are difficult or impossible to navigate with a catheter.

레이저 프로젝터의 좌표추출 프로그래밍 기법연구

김옥재(Kim Ok-Jae),정영창(Jung Young-Chang),홍철호(Hong Chel-Ho),김재욱(Kim Jae-Wook),김문수(Kim Mun-Su) 대한전기학회 2000 대한전기학회 학술대회 논문집 Vol.2000 No.7

한국전력공사와 에너지 관리공단의 약정부하 분석

김병수(Byoung-Su Kim),신호성(Ho-Sung Shin),송경빈(kyung-Bin Song),김재철(Jae-Chel Kim),한승호(Seung-Ho Han),이학주(Hak-Ju Lee),권성철(Seong-Chul Kwon) 대한전기학회 2005 대한전기학회 학술대회 논문집 Vol.2005 No.7

만삭 전 조기양막파수에서 분만 잠복기에 따른 주산기 예후에 관한 연구

김우선 ( Woo Sun Kim ),최철훈 ( Chel Hun Choi ),이수호 ( Su Ho Lee ),최석주 ( Suk Joo Choi ),김지운 ( Ji Un Kim ),이은실 ( Eun Sil Lee ),손영수 ( Young Soo Son ),김종화 ( Jong Hwa Kim ),노정래 ( Cheong Rae Roh ) 대한주산의학회 2004 Perinatology Vol.15 No.4

목적 : 조기양막파수 산모에서 양막파수에서 분만까지의 기간(잠복기)이 주산기 예후에 미치는 영향을 조사하기 위하여 본 연구를 시행하게 되었다. 방법 : 1996년 1월부터 2003년 10월까지 조기양막파수로 34주 이전에 분만한 223명을 대상으로 분만 잠복기에 따라 6군(I군 : 6시간 이하, II군 : 6시간~2일, III군 : 2~4일, IV군 : 4~7일, V군 : 7~12일, VI군 : 12일 이상)으로 구분한 후 각 군의 임상 양상과 주산기 예후를 관찰하였다. 결과 : 전체 산모의 입원 시 평균 임신 주수는 29.6±2.6주이었고 양막파수 당시 평균 양수지수는 7.3±5.0 이었다. 평균 분만 주수는 30.6±2.4주였고, II군과 III군에서 유의하게 높았다(p=0.0017). 중앙 잠복기는 전체 산모에서 102시간(4일 6시간)이었고 67%의 산모가 1주 이내에 분만하였다. 분만 잠복기는 양막파수 당시 주수가 30주 이하일 때(175시간 vs. 76시간, p=0.001) 연장되었고, 자궁 수축 억제제를 사용했을 때(131시간 vs. 33시간, p=0.001) 분만 잠복기는 유의하게 증가하였다. 양막파수 당시 양수지수는 잠복기에 영향을 미치지 않았다(p>0.05). 분만 주수를 보정하였을 경우 V군에서 조직학적 융모양막염이 유의하게 많이 발생하였고(60%), 분만 잠복기가 증가함에 따라 신생아 중환자실 재원 기간이 증가하였다. 신생아 호흡곤란 증후군은 II군과 IV군에서 I군에 비해 유의하게 적게 발생하였다(12%, 16% vs. 69%). 신생아 사망률은 I군이 18%로 가장 높았고, 분만 주수를 보정하였을 때에도 같은 결과를 보였으나 I군을 제외한 다른 군들 간에는 유의한 차이가 없었다. 그 외 다른 신생아 합병증은 각 군간 유의한 차이가 없었다. 결론 : 만삭 전 조기양막파수에서 즉각적인 분만보다는 적극적인 관찰요법을 통하여 분만 잠복기를 연장시키는 것이 신생아 사망이나 신생아 호흡곤란 증후군의 빈도를 줄이는데 도움이 되나 7일 이상 지연시키는 것은 주산기 예후의 향상과는 관계없이 감염성 합병증을 증가시키는 것으로 보인다. Objective : To evaluate the clinical characteristics and perinatal outcomes in relation to the latency period after preterm premature rupture of membrane (PPROM). Methods : We analyzed retrospectively the 223 pregnant women with PPROM who delivered before 34 weeks of gestation in Samsung Seoul Hospital from January 1996 to October 2003. The study population was divided into six groups according to the larency from membrane rupture and delivery (group I : shorter than 6 hours, group II : 6~48 hours, group III: 2~4 days, group IV : 4~7 days, group V : 7~12 days, group VI : beyond 12 days). Results : The mean gestational age (GA) at rupture was 29.6±2.6 weeks and the mean GA at delivery was 30.6±2.4 weeks. The median latency was 102 hours and 67% of patients delivered within 7 days. The latency was prolonged with GA at rupture before 30 weeks and used of tocolytics. After adjustment of GA at delivery, pathologic chorioamnionitis occurred more frequently in group V than group I. Respiratory distress syndrome occurred less frequently in group II and group IV than group I. Neonatal mortality rate was highest in group I, but the other neonatal morbidities were not significant differences. Conclusion : In PPROM with delivery before 34 weeks, prolongation of the latency longer than 6 hours seems to be beneficial for reducing neonatal RDS and mortality, but infectious morbidity seems to increase when the latency was prolonged longer than 7 days without any benefits for perinatal outcomes.

양측성 슬동맥 포착증 : 증례 보고 A case report

김성,최창식,우영민,이봉화,김이수,강형길,임민균,황대현,위병철 대한혈관외과학회 1999 Vascular Specialist International Vol.15 No.1

A case of symptomatic bilateral popliteal artery entrapment syndrome is reported. A twenty-one-year old male, a candidate of athlete, complained of coldness, weakness, pallor and cyanosis of right lower leg and intermittent claudication to both calves during walking or exercise for ten months. Studies revealed that the right popliteal artery was completely occluded, but the left popliteal artery was non-occlusive. An endarterectomy and onlay vein patch graft to the thrombosed and fibrotic right popliteal artery, and myotomies of bilateral medial heads of gastrocnemius muscle were done (May 20, 1998). Follow-up examinations for the last ten months showed a complete relief of symptoms with normal distal arterial flow. It is thought that even though the majority of patients present with unilateral calf claudication, the possiblity of bilateral problems need to be also considered.

노년층 피부질환의 분포에 관한 임상적 관찰

김병수,이승철,은희철,유재학,정승용,이일수,여운철,김영걸,고우석,김계정,최호철,이시원 대한피부과학회 1999 大韓皮膚科學會誌 Vol.37 No.5

Background: It is a trend that the average life span is prolonged in proportion to the advance of socio-economy and medical science. Consequently, the number of elderly patients with skin diseases is increasing. Objective: This study was performed to see the change of patterns of skin diseases in elderly patients. Methods: One thousand four hundred and twenty elderly patients, over the age of 65, who visited the departments of dermatology and in five hospitals, from January 1, 1997 to December 31, 1997 were selected. We surveyed the frequeney of skin disease by types and the distributions by month, season and age. Results: The results were as follows; 1. The frequent skin diseases were herpes zoster and postherpetic neuralgia (12.3%), fungal infection (11.3%), pruritus (9.2%), contact dermatitis (6.8%), and seborrheic dermatitis (5.7%). 2. The most frequent was herpes zoster and postherpetic neuralgia in January, February, March, April, June, August and October, in January, July, September and December, fungal infection; in May, contact dermatitis; in November, pruritus. 3. The most frequent skin desease was herpes zoster and postherpetic nueralgia in spring, summer and winter; in autumn, fungal infection. 4. The most frequent skin disease for the 65-74 aged-group was herpes zoster and postherpetic neuralgia; for the over 85 aged group, herpes zoster and postherpetic neuralgia. Conclusion: The results showed that, in contrast to previous studies, herpes zoster and postherpetic neuralgia increased in elderly patients. These findings may be helpful for the government and medical centers to plan and establish a management system on the skin diseases of elderly patients.

과제수행을 통한 비우세손 훈련이 손 기능에 미치는 영향

장철 ( Chel Jang ),송민옥 ( Minok Ot Song ),김보아 ( Bo A Kim ),한수정 ( Su Jung Han ) 대한통합의학회 2015 대한통합의학회지 Vol.3 No.4

Purpose : We described how the training of non-dominant hand that applicates the activity effects on dominant hand. Method : From November 6th to December 2nd 2013, We randomly selected 18 people that don’t have a damage of hand function and are in college of K in Busan. (cross stitch training group 9 people, control group 9 people) All participants agreed on the research after fully being aware of training procedures and spontaneously conducted. Each training was practiced for 40 minutes in once every second day. One researcher deals with three participants at silent environment. We used the study measurement, Purdue pegboard, to investigate the sharpness of hand. To investigate the advancement of hand function caused by cross stitch training, we practiced three times estimations of primary one before training, middle one after 2 weeks training, last one after four weeks training and obtained the following results. Result : First of all, We found that the group of hand training appeared to be advanced of dominant hand’s sharpness depending on the training period more than the control group. Second, We found that the group of hand training appeared to be advanced of non-dominant hand’s sharpness depending on the training period more than the control group. Third, We found that the group of hand training appeared to be advanced of both hand’s sharpness depending on the training period more than the control group. Fourth, We found that the group of hand training appeared to be advanced of the assembling function sharpness depending on the training period more than the control group. Conclusion : Put the results of this research together, we found that non-dominant hand training that used the activity was of help to advance the function of dominant hand. So, we thinks that hand training might help the recovery of affected hand function to the person that have a problem of hand function like hemiplegia patient. It will be required to practice the further study targeting the person that have a problem of hand function like hemiplegia patient. We hope that this research will be apply to clinical occupational therapy.