• KSCE Journal of Civil and Environmental Engineering Research
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• v.38 no.4
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• pp.547-553
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• 2018

An integrated iron and steel mill uses a large amount of water and produces wastewater which contains various contaminants such as iron, manganese, etc. Especially, in some regions of Southeast Asia, the concentration of silica in iron and steel mill wastewater is higher than in other countries. Silica is known to be one of the main causes for fouling in the membrane processes for water reuse. In cases of high concentrations of silica in iron and steel mill wastewater, the ferrous silicate tends to be formed. This could lead to higher fouling tendency depositing on the membrane surface. Therefore we conducted a pilot test to investigate the effect of silica and iron on the fouling tendency of reverse osmosis (RO) membrane for treating two types of wastewater from an integrated iron and steel mill. In this case of treated wastewater from iron and steel mill, RO pilot plant was operated with the fluxes 15.9LMH and 18.8LMH for 112 days to investigate the fouling characteristics. The results found that the fluctuation of flux was much wider than the average flux and the minimum permeability was low at 78%. In the case of treated runoff from an integrated iron and steel mill, the average concentration of iron was lower than in wastewater. RO pilot test was conducted with the flux 18.8LMH for 46 days. The results found that runoff had a lower fouling tendency and pre-treatment using microfiltration (MF) could minimize the fouling problem of RO.

• Journal of Chest Surgery
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• v.36 no.7
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• pp.531-534
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• 2003

A 43-year-old woman who had had an invasive mole 5 years previously required emergent pulmonary embolectomy under cardiopulmonary bypass. Curative resection was impossible because the tumor invaded the right main pulmonary artery and left lower pulmonary artery. The pathologic diagnosis made by the tumor emboli specimens was choriocarcinoma. The patient received post-operative chemotherapy over a 6-month period and had complete remission. Although rare, choriocarcinoma should be considered in the differential diagnosis of fertile women presented with pulmonary embolism.

• Proceedings of the KSLP Conference
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• 1997.11a
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• pp.253-253
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• 1997

비폐색이 있는 경우 음성이 변하는 것을 쉽게 느낄 수 있지만, 비폐색 때의 음향학적인 특성에 대하여 알려진 바를 찾기는 쉽지 않다. 저자들은 인위적으로 비폐색을 유발하여 비폐색 부위에 따른 비강자음의 음향학적 변화특성을 파악하고 비음도의 변화 정도를 비교하고자 하였다. 정상비음도를 보이는 성인남녀 각 10명을 대상으로, 2ml의 부피를 갖도록 수술용장갑에 Merocel$^{\circledR}$을 넣은 뒤, 이를 이용하여 ostiomeatal unit(OMU)을 중심으로 전후상하 4부위의 인위적인 비폐색을 유발하여, 비폐색 전과 후의 부위에 빠른 차이틀 비교하였다. /나나/의 발성을 각 조건에서 3회 실시하여, 모음중간의 /ㄴ/중 (CVCV) 안정된 spectorgram소견을 보이는 부위를 선택하여, 해당구간의 제1, 제2, 제3 음형대와 각각의 bandwidth 평균값을 남녀별로 비교하였고, 표준비음비율이 알려진 rabbit, baby, mama 문장을 이용하여 비음비율을 비교하였다. 남녀모두 비폐색전에 비하여 OMU의 앞쪽부위를 막은 경우에 제1음형대가 가장 뚜렷하게 감소되었으며, 비음비율의 유의한 감소를 보였다. 비폐색이 있는 경우, 비강자음 /ㄴ/은 제1음형대를 중심으로 주요변화가 일어남을 알 수 있었으며, 비폐색 부위에 따라 비음비율이나 제1음형대 감소의 정도가 다름을 알 수 있었다.

• Journal of Chest Surgery
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• v.34 no.4
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• pp.373-376
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• 2001

만성 폐색전증으로 혈전 제거술을 하고 난 다음 기관지내 대량 출혈은 빈도는 적으나 상당히 높은 사망률을 보이는 합병증 중의 하나이다. 기관지내 대량 출혈이 생겼을 때 체외 막 산소화 장치와 각각 다르게 조절한 인공호흡기 2대를 이용하여 특별한 휴유증 없이 잘 치료한 경험을 하였기에 보고하는 바이다.

• Journal of Chest Surgery
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• v.42 no.4
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• pp.492-496
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• 2009

Background: The treatment of acute pulmonary embolism is difficult, and it can be lethal when cardiogenic shock is involved with major pulmonary embolism. In the past, pulmonary embolectomy was considered as the last choice for patients with pulmonary embolism. Accordingly, we analyzed our experience with seven cases of pulmonary embolectomy as an alternative option for the early treatment of pulmonary embolism. Material and Method: A retrospective analysis of medical charts of all patients who underwent pulmonary embolectomy at our hospital over the past eight years was performed. The patients were observed during their hospital stay and followed until their last visit to the outpatient department. Result: Among 7 patients (4 men and 3 women), 4 had massive pulmonary embolism, and 3 had sub massive pulmonary embolism. An extracorporeal membrane oxygenator was inserted in 3 patients before surgery. There was no mortality, and postoperative echocardiography showed no pulmonary hypertension in 6 patients. Conclusion: Pulmonary embolectomy can be performed with minimal mortality. We think that the use of an extracorporeal membrane oxygenator in patients with cardiogenic shock before surgery improves survival.

• Journal of Wetlands Research
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• v.20 no.3
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• pp.235-242
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• 2018

The function of vertical subsurface flow wetlands can potentially be reduced with time due to clogging and are often assumed to be occurring when ponding and overflow is observed during rainfall. To investigate their clogging potential, three pilot-scale vertical subsurface flow (VSF) wetland systems were constructed employing woodchip, pumice, and volcanic gravel as main media. The systems received stormwater runoff from a highway bridge for seven months, after which the media were taken out and divided into layers to determine the amount and characteristics of the accumulated clogging matters. Findings revealed that the main clogging mechanism was the deposition of suspended solids. This is followed by the growth of biofilm in the media which is more evident in the wetland employing woodchip. Up to more than 30% of the clogging matter were found in the upper 20 cm of the media suggesting that this layer will need replacement once clogging occurs. Moreover, no signs of clogging were observed in all the wetlands during the operation period even though an estimation of at least 2 months without clogging was calculated. This was attributed to the intermittent loading mode of operation that gave way for the decomposition of organic matters during the resting period and potentially restored the pore volume.

• Clinical and Experimental Pediatrics
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• v.50 no.12
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• pp.1252-1256
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• 2007

Meconium ileus (MI) is the earliest clinical manifestation of cystic fibrosis (CF) in infants. It arises from the intraluminal accumulation of highly viscid, protein-rich meconium, typically present in the terminal ileum as a neonatal intestinal obstruction. Therefore, the clinical symptoms include abdominal distension, bilious vomiting and delayed passage of meconium. CF is caused by mutations in the transmembrane conductance regulator gene (CFTR) located in the long arm of chromosome 7. CF is common in Caucacians, but is a rare disorder in Asian countries, including Korea. We experienced a case of CF combined with MI. Compared with the previous reports of CF in Korea which presented respiratory problems, this is the first case genetically diagnosed as CF with MI during the newborn period.

• Childhood Kidney Diseases
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• v.15 no.1
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• pp.86-89
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• 2011

Imperforate hymen is, with an incidence of 0.1%, a rare female anomaly, which can appear with symptoms such as lower abdominal pain, primary amenorrhea, dysuria, anuria, caused by retention of menstrual blood after the onset of menstruation. Generally urinary retention is caused by psychological conditions, drug effect, infection or congenital anomaly causing acute urinary obstruction. We experienced a patient with symptoms of acute urinary retention, suggesting acute urinary obstruction. The cause for the retention turned out to be an imperforated hymen, which should therefore be mentioned in the literature as a possible cause in cases suspected of urinary retention.

• Journal of Practical Agriculture & Fisheries Research
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• v.20 no.2
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• pp.117-123
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• 2018

The purpose of this report is to describe the diagnosed case of a large colonic impaction in an adult donkey. An adult female donkey (Equus africanus asinus; 6-years-old) was admitted to the Equine Hospital of Jeju Race Park with signs of anorexia, which had started 1 day previously. Clinical examination revealed: weak gut sounds, dehydration, and severe abdominal distension, but normal respiratory and heart rates and no signs of pain. Transrectal palpation identified an impaction in the colon. The patient was treated with nasogastric siphonage, fluid therapy, and nonsteroidal anti-inflammatory drugs. Over the course of a day, her condition worsened; she started trembling, could not stand, and 2 hours later she died. Upon necropsy, a vast amount of ingesta was found in the large colon, particularly in the left ventral colon. The cecum and small colon were normal. Eleven days prior to presentation, the stable management and diet of the donkey had changed. We suspect that the change of feed, reduced water consumption, and lack of exercise precipitated the illness. However, the exact cause of the sudden death of the donkey requires further investigation.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1987.05a
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• pp.12.2-12
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• 1987

만성 상악동염은 동점막의 복잡한 변화를 일으키고, 만성증으로 지속되는 비분비물 및 비점막의 염증이 이관에 파급되어 중이에 영향을 미치며 그 치유경과를 늦추게 한다. 저자는 만성 상악동염에서 동점막의 비후정도가 이관 및 중이에 미치는 영향을 알아 보고자, 1986년 1월부터 3월까지 이화여자대학교 의과대학 부속병원 이비인후과에 비폐색 및 비루를 주소로하여 내원한 환자중 만성 상악동염으로 진단된 16세 이상의 성인 환자를 대상으로 검사하였다. 동점막 비후정도에 따라 비정상군을 경도(2~3mm), 중등도(4mm이상), 고도(상악동 전체혼탁) 3군으로나누어 각각 40예를 조사군으로 하고 동점막의 두께가 0~1mm인 경우를 정상대조군으로 하여 40예를 GSI 28 AUTO TYMP를 사용하여 screening audiometry, tympanometry, acoustic reflex threshold (ipsilateral and contralateral)를 시행하여 다음과 같은 결과를 얻었다. 1) 남녀의 비는 1 : 2.6이고 21세에서 30세군이 53예(33.0%)로 가장 많았다. 2) 증상발현기간은 6개월 이내가 42.5%로 가장 많았다. 3) Tympanogram의 분포에서 비정상적 type으로 나오는 비율이 정상군과 비정상군중에서 경도군이 각각 22.5%이었고 중등도군이 30.0%, 고도군이 50.0% 순이었다. 4) 등골근반사역치는 정상군과 비정상군 사이에 차이가 없었다. 5) 등골근무반사율 역시 정상군과 비정상군 사이에 차이가 없었다.