• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2007년도 추계 학술논문 발표대회
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• pp.129-132
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• 2007

From this research the construction civil official is simple with the parking floor finishing material, it improves the durability of the parking floor it uses the flexible FRP it will be able to secure the drainage quality it is excellent and it presents the efficient application plan from the construction site. The performance appraisal only efficiency with of result floor of parking area material bay it knows, the result where also the performance appraisal portion re-with roof bottom finishing is satisfied it showed. The flexible FRP it applies the material to the building as to diminish the damage of the bottom finishing material due to the deterioration and the conduct and the external force of the building it is exposed to the external environment, secures the quality of the material from the construction site and will contribute to the stability against the bottom finishing material.

• 드라이브 ㆍ 컨트롤
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• 제20권4호
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• pp.123-132
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• 2023

In disaster situations, to facilitate rapid drainage, electric underwater pumps are installed manually. This poses a high risk of electric shock accidents due to a short circuit, and a lot of time is required for hose connection and installation of electrical devices. To solve these problems, a Venturi pump using the venturi effect without external power is used. However, Venturi pumps that operate without external power make it difficult to install flow sensors such as electric devices; consequently, it is difficult to check the real-time flow rate. This paper proposes a flow estimation logic to replace the function of the flow sensor for the venturi pump . To develop the flow estimation logic, the flow characteristics of the venturi pump, according to the operating conditions, were checked. After that, the relationship with the flow rate of the venturi pump was defined using a pressure sensor corresponding to a low-cost sensor. Finally, an analysis of the estimation error was performed using the developed flow estimation logic.

• Journal of Korean Neurosurgical Society
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• 제29권5호
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• pp.644-649
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• 2000

저자들의 방법으로 급성 수두증이 지속되는 환자를 치료한다면 첫째, 뇌압이 상승된 환자에서 요추지주막하 배액의 가장 우려되는 합병증인 탈뇌의 가능성을 미리 예측 할 수 있고 둘째, 뇌실외배액을 뇌실염 발생 이전에 요추지주막하배액으로 대치하여 뇌실염을 예방할 수 있으며 셋째, 뇌실외배액으로 인하여 뇌실염이 이미 발생한 경우에는 요추지주막하 배액으로 치환하여, 이물질(foreign body)로 작용하여 감염치료를 저해하는 뇌실내 카테터를 제거할 수 있고 동시에 경막내 항생제 투여로 뇌실염의 치료를 기대할 수 있으며 넷째, 요추지주막하 배액은 뇌실외배액에 비해 반복적 시술에 따른 두개강내 출혈, 경련 등의 위험으로부터 안전하며 천자가 가능한 부위가 많아 기간이 오래되거나 혹은 천자가 실패하여 다른 부위로 옮겨야할 때 위치 변경이 용이하다는 등의 장점이 기대된다. 본 교실에서는 여러 가지 원인으로 인하여 발생한 급성 수두증이 조기에 해결되지 않고 잔존혈괴나 감염 등의 이유로 단락술을 바로 시행할 수도 없는 경우에 간단한 시험을 통하여 탈뇌의 가능성을 배제한 다음 뇌실외배액을 요추지주막하 배액으로 치환하여 치료함으로써 좋은 결과를 얻었기에 이러한 곤란한 경우의 치료법의 한가지 대안으로 제안하고자 한다.

• Journal of Korean Neurosurgical Society
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• 제42권3호
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• pp.232-234
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• 2007

We describe the extrusion of a ventriculoperitoneal shunt catheter from the anus after double perforation of the large bowel in a 3-year-old girl with hydrocephalus. She was admitted because the tip of the peritoneal catheter protruded 10 cm from the anus and clear cerebrospinal fluid dripped from the tip. Emergency laparotomy was performed. The distal peritoneal catheter perforated and penetrated the sigmoid colon and re-perforated into the rectal cavity. The distal peritoneal catheter was removed, the proximal catheter was exposed for external drainage, and intravenous broad-spectrum antibiotics were administered for 2 weeks. After control of infection, the shunt system was completely removed. Bowel perforation by a peritoneal catheter is a rare complication. Diagnosis is often difficult, delayed, and its incidence is likely underestimated. Most bowel perforation is the result of infection as opposed to technical errors.

• Archives of Reconstructive Microsurgery
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• 제17권1호
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• pp.51-54
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• 2008

We experienced a case of 49-year-old male patient with amputated two fingers preserved in Soju (Korean traditional liquor, a kind of alcoholic beverages). The amputation level of the two fingers was at the distal interphalangeal joint. The Soju was not an adequate physiologic solution for preserving the amputated tissues. Even though arterial anastomosis was successful, there was no venous drainage visible in the operative field. On the first day after the initial operation, we succeeded in the anastomosis of one vein in one of the two amputated fingers. This was 12 hours after arterial anastomosis was carried out. But no venous dranage was visible in the other finger. In spite of a salvage procedure sustained with external bleeding for 7 days, this replanted fingertip eventually fell into necrosis.

• Journal of Korean Neurosurgical Society
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• 제42권1호
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• pp.56-58
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• 2007

A 64-year-old man was admitted to our hospital in semicomatous consciousness. Brain computed tomography scans demonstrated $2.6{\times}2.5\;cm$ sized hyperdense mass in the pineal region with multiple punctate calcifications and hydrocephalus. Brain magnetic resonance imaging demonstrated a pineal mass which was heterogeneously enhanced with gadolinium. After external ventricular drainage, the patient regained consciousness. The mass was totally removed via occipital transtentorial approach. No consequent ventricular shunt was needed and the patient recovered without any neurological deficit. Final pathologic report of the tumor was ependymoma.

• Journal of Yeungnam Medical Science
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• 제39권2호
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• pp.172-177
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• 2022

Takotsubo or reverse Takotsubo cardiomyopathy is a well-known cardiac complication of subarachnoid hemorrhage (SAH) that shows transient left ventricular wall motion abnormalities with electrocardiogram (ECG) changes. ST change followed by T inversion is a common ECG finding complicated with these disorders, left bundle branch block (LBBB) may be a potential ECG pattern which is seen. In this case, we describe the clinical profile and outcomes of a patient with LBBB and reverse Takotsubo cardiomyopathy after anesthetic induction, which was scheduled as an emergent external ventricular drainage after SAH. This is the first report of an LBBB pattern in reverse Takotsubo cardiomyopathy.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2022년도 학술발표회
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• pp.334-334
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• 2022

Improvement of old-fashioned rain gauge systems for automatic, timely, continuous, and accurate precipitation observation is highly essential for weather/climate prediction and natural hazards early warning, since the occurrence frequency and intensity of heavy and extreme precipitation events (especially floods) are recently getting more increase and severe worldwide due to climate change. Although rain gauge accuracy of 0.1 mm is recommended by the World Meteorological Organization (WMO), the traditional rain gauges in both weighting and tipping bucket types are often unable to meet that demand due to several existing technical limitations together with higher production and maintenance costs. Therefore, we aim to introduce a newly developed and cost-effective hybrid rain gauge system at 0.1 mm accuracy that combines advantages of weighting and tipping bucket types for continuous, automatic, and accurate precipitation observation, where the errors from long-term load cells and external environmental sources (e.g., winds) can be removed via an automatic drainage system and artificial intelligence-based data quality control procedure. Our rain gauge system consists of an instrument unit for measuring precipitation, a communication unit for transmitting and receiving measured precipitation signals, and a database unit for storing, processing, and analyzing precipitation data. This newly developed rain gauge was designed according to the weather instrument criteria, where precipitation amounts filled into the tipping bucket are measured considering the receiver's diameter, the maximum measurement of precipitation, drainage time, and the conductivity marking. Moreover, it is also designed to transmit the measured precipitation data stored in the PCB through RS232, RS485, and TCP/IP, together with connecting to the data logger to enable data collection and analysis based on user needs. Preliminary results from a comparison with an existing 1.0-mm tipping bucket rain gauge indicated that our developed rain gauge has an excellent performance in continuous precipitation observation with higher measurement accuracy, more correct precipitation days observed (120 days), and a lower error of roughly 27 mm occurred during the measurement period.

• 한국농공학회논문집
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• 제65권1호
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• pp.41-49
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• 2023

To utilize the hydraulic and hydrological models when simulating floods in agricultural watersheds, it is necessary to consider agricultural reservoirs, farmland, and farmland drainage system, which are characteristics of agricultural watersheds. However, most of them are developed individually by different researchers, also, each model has a different simulation scope, so it is hard to use them integrally. As a result, there is a need to link each hydraulic and hydrological model. Therefore, this study established an integrated flood simulation system for the comprehensive flood simulation of agricultural reservoir watersheds. The system can be applied easily to various watersheds because historical weather data and the SSP (Shared Socio-economic Pathways) climate change scenario database of ninety weather stations were built-in. Individual hydraulic and hydrological models were coded and coupled through Python. The system consists of multiplicative random cascade model, Clark unit hydrograph model, frequency analysis model, HEC-5 (Hydrologic Engineering Center-5), HEC-RAS (Hydrologic Engineering Center-River Analysis System), and farmland drainage simulation model. In the case of external models with limitations in conceptualization, such as HEC-5 and HEC-RAS, the python interpreter approaches the operating system and gives commands to run the models. All models except two are built based on the logical concept.

• 보존과학회지
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• 제34권1호
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• pp.11-21
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• 2018

등록문화재 제233호 '공주 중학동 구 선교사 가옥'의 유래와 보존현황에 관한 연구결과 건축연대는 1921년 10월 23일이 합당하며 일제 강점기 말기 최후 거주자는 그동안 Amendt 선교사로 알려져 왔으나, 1939년 작성된 Williams 선교사의 편지 및 새로운 증언에 의해 Alice Sharp 선교사가 1939년 은퇴시까지 사용하였던 건물로서 독신여선교사들의 주거는 물론 여학교역할도 하였던 건물로 밝혀졌다. 따라서 이 문화재의 명칭도 '공주 여선교사 기념관'으로 변경하는 것이 바람직하다. 본 문화재의 내 외부 보존현황 조사 결과 건물 벽체의 기울기에는 이상이 없으나 내부 목재상태가 상당부분 열화되어 있어 안전진단 후 전체적인 보수가 필요한 상황으로 판단된다. 특히, 창호시설의 경우 본래의 상하 미닫이 창호로 복원할 필요가 있으며, 건물의 남서측 계단과 데크 및 우물의 원형복원이 필요한 것으로 판단된다. 아울러 문화재의 하부지반의 안전성에 관한 지반 비파괴진단결과 이 선교유적이 2~5 m 두께의 불균등한 표토층 위에 건축되었으며 표토층과 그 하부의 풍화암과의 경계면이 지형경사 방향으로 기울어져 있는 현상이 발견되고 있다. 이러한 현상은 우기에 지반의 함수비가 증가하면 지반의 지지력이 저하되는 바 부등침하발생 가능성이 있으며, 특히 집중호우가 발생한다면 산사태를 초래할 가능성이 있다. 따라서 본 건물 부지의 남서단 경계부에 석축시설을 설치하는 것이 바람직하며 신속한 배수가 되도록 배수시설 설치가 필요하다.