• 한국임상수의학회지
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• 제30권1호
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• pp.80-85
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• 2013

Twenty one cows in Goyang and Paju cities were referred due to displacement of the abomasum and foreign body in the rumen. Omentopexy and rumenotomy through a right flank celiotomy were performed for treatment of abomasal displacement and the foreign body removal in the rumen. The right paralumbar fossa is clipped and prepared surgically. Local anesthesia is instituted by performing inverted L block. The abdomen was entered through 25 to 30 cm vertical incision in the right paralumbar fossa starting 4 to 5 cm ventral to the transverse processes of the lumbar vertebrae. A 14-gauge needle with rubber tubing attached is inserted to relieve the gaseous pressure and to facilitate further exploration and manipulation. The rumen was gently pulled out of the abdominal cavity and incision was made at the omentum. Rumenotomy was done and retrieved the foreign body. After the rumen was rinsed with sterile saline, the rumen wall was closed by a Lembert suture technique. The omentum was closed by a simple continuous suture. Right flank omentopexy was performed for the surgical correction of abomasal displacement. Recovery results among 21 cows included 9 excellent, 5 good, 2 fair and 5 bad. It was considered that operation of abomasal displacement and foreign body removal in the rumen through right flank celiotomy was a good surgical technique to reduce expenses, surgical pain, and surgery time.

• 에너지공학
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• 제12권1호
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• pp.1-10
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• 2003

가압유동층 연소 유닛은 1~1.5 MPa, 연소 온도 850~87$0^{\circ}C$ 조건으로 운전된다. 가압 석탄 연소 시스템은 전열관을 통한 열전달로 증기를 생산하며 가스터빈으로 공급될 고온 가스를 생산한다. 가스 중의 고체 잔류물에 의한 가스터빈의 성능 저하 때문에 가스 정제가 매우 중요하며 석탄과 흡수제 및 연소 공기를 가압하여야 하고 배가스와 회 제거 시스템에서는 감압을 해야 하기 때문에 운전이 다소 복잡하다. 증기터빈 대 가스터빈에서 생산되는 전력의 비율은 약 80:20이고 모든 부하 범위에서 연소기와 가스터빈이 서로 적절히 조화를 이루어야 하기 때문에 PFBC와 복합 사이클 발전 루트는 독특한 제어 방식을 갖는다. 유동층에 적용할 수 있는 가스의 최대 온도는 회 융점에 의해 제한을 받기 때문에 가스터빈은 일반 가스터빈에 비해 좀 특별하다고 할 수 있다. 회의 용융이 일어나지 않도록 하기 위한 최대 허용 가스 온도는 약 90$0^{\circ}C$이다. 가스터빈의 높은 압력비 때문에 압축시 인터쿨링을 사용하며 이는 상대적으로 낮은 터빈 입구의 온도를 상쇄하기 위한 것이다.

• Applied Biological Chemistry
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• 제24권4호
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• pp.213-217
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• 1981

김치의 순간살균장치(瞬間殺菌裝置)를 예열부(豫熱部), 살균부(殺菌部), 냉각부(冷却部) 및 액분리-혼합부(液分離-混合部)갖도록 동(銅) coil 으로 제작(製作) 하고 소금과 배추를 재료로 조제한 김치를 살균(殺菌)하였다. 액분리(液分離)에서 김치액을 분리(分離)하여 예열부(豫熱部)에서 순간가열(瞬間加熱)하여 살균부(殺菌部)에서 3분간(分間) 보지(保持)하였으며 곧 냉각부(冷却部)에 순간냉각(瞬間(冷却)시켜 고형분(固形分)과 재혼합(再混合)하였다. 살균온도(殺菌溫度)를 $68^{\circ}$, $75^{\circ}$, $81^{\circ}$, $85^{\circ}C$의 4개구(個區)에서 처리(處理)한 결과 산도(酸度) 및 pH의 변화(變化)를 크게 억제할 수 있었고 저장기간(貯藏期間)을 비살균(非殺菌)김치에 비(比)하여 2배연장(倍延長)시킬 수 있었다. 김치의 숙성도(熟成度)에 차이(差異)를 두고 살균(殺菌)결과 숙성도(熟成度)가 낮은 구(區)에서 살균효과(殺菌效果)가 더욱 높았다.

• 대한한의학회지
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• 제16권1호통권29호
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• pp.96-117
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• 1995

1. The Pung(風) is the necessary power for growth and maintenance of life. 2. The characteristics of the Pung(風) is the Yang evil, the features for opening and excretion, mobility and rapid change. That is the major cause of all diseases, and its mobility is the main character. 3. Jung Pung(中風) is the same concept of apoplexy in Western medicine. 4. Jung Pung(中風) is classified on the basis of pathology, anatomy, and histology in Western Medicine, but In Oriental Medicine that is classified on the basis of symptom and severity of disease. 5. In Western Medicine, Jung Pung(中風) was regarded as the local cause of disease, but in Oriental Medicine regarded as the physiological changes caused by the weakness of the whole body. 6. In the emergency care, the method of GaeKeum is compared to Levin tubing, the method of to the use of urokinase for the promotion of cerebrovascular circulatio, and the method of To(吐法) to suction for the elimination of Dam(痰), the method of Hun(熏法) to the use of solution for the improvement of circulation. 7. With the comparison of the cause and diagnosis, the hemorrhagic disease and infarction were regarded as the major agents in Western Medicine and the symptom appeared in the patient was the standard of diagnosis and therapy in Oriental Medicine. 8. In the Western therapy of cerebral hemorrhage, the method of coagulation and hemostasis was used for the elimination of hematoma and cerebral edema, but in Oriental Medicine, the method of YanghaelGiHael(凉血止血) was used for descending the PungHwa(風火) and hemostasis. 9. In the period of recovering injury, the physical therapy was underlined for the recovering of partial function in Western Medicine, the method of accupuncture and drug therapy was adapted for the normal function of the whole body.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1996년도 춘계학술대회
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• pp.243-243
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• 1996

백금착물 항암제 후보물질로서 합성된 KBP31705-Cl27, KBP30603-901을 기존 화합물인 cisplatin 및 carboplatin과 pharmacokinetic profile을 비교 검토하였다. 웅성 Sprague-Dawley rat을 sodium pentobarbital 마취하에서 방광 및 대퇴동맥과 정맥에 polyethylene tubing을 사용하여 catheterization시켰다. Urine 배출이 안정화되었을 때 대퇴정맥내로 cisplatin과 KBP31705-Cl27은 2 mg/kg, carboplatin과 KBP 30603-901은 20mg/kg 용량으로 주사한 후 2, 4, 6, 8, 10, 15, 20, 30, 45, 60, 120 분에 대퇴동맥으로부터 혈액을 채취하였으며 urine은 약물투여 후 1시간 간격으로 4시간동안 채취하였다. Plasma와 urine중의 platinum농도는 inductively coupled plasma-mass spectrometer를 사용하여 측정하였고, pharmacokinetic parameters는 non-linear least square computer Program인 PCNONLIN을 이용하여 산출되었다. 혈중 platinum농도와 시간의 관계에서 KBP31705-Cl27은 cisplatin과 비교하여 alpha-phase에서 혈중 농도는 낮지만 비슷한 양상을 나타내었고, beta-phase에서는 비교적 느리게 소실됨을 보였다. Urine으로 4시간동안 배출된 platinum양은 각각 투여량의 52, 56%로서 두 약물에서 비슷하였다. 또한 KBP30603-901은 carboplatin과 비교하여 alpha-phase는 거의 비슷한 패턴을 나타내었으나, beta-phase는 훨씬 느리게 감소하여 반감기가 길다는 것을 보여 주었으며 또한 이것은 urine으로 4시간동안 배출된 platinum양이 KBP30603-901의 경우 투여량의 46%로서 carboplatin의 59%보다 적게 배출된다는 data와도 일관됨을 보여주었다. 이상의 결과로 볼 때 KBP30603-901이 다른 백금착물 항암제보다 체내에 머무르는 시간이 길어 혈중에서 보다 오랜 시간동안 머물러 높은 유효농도를 유지할 수 있을 것으로 사료된다.

• 비파괴검사학회지
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• 제29권2호
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• pp.98-103
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• 2009

원자력발전소 증기발생기 전열관에 균열이 발생할 경우 해당 전열관을 관막음하여 안전하게 운영하고 있다. 만약 가동중검사시 균열 검출에 실패할 경우 전열관 파단사고와 같은 대형 사고로 이어질 수 있다. 증기발생기 전열관에는 여러 유형의 균열이 발생하고 있는데, 와전류검사로부터 균열이 확인된 경우 균열의 크기를 평가하여 전열관의 건전성을 평가하여야 한다. 그러나 균열의 깊이평가는 평가방법이 난해하여 평가 결과의 정확도 및 평가자 사이의 일관성이 떨어진다. 본 논문에서는 현재 사용되고 있는 균열깊이 평가방법에 대한 정확도 및 일관성을 확인하고, 보다 신뢰성 있는 평가방법의 개발을 위하여 고리 1호기 구증기발생기를 활용하였다. 국내 유자격 평가자들의 round robin test 결과를 통계적으로 분석하여 균열 유형별 최적의 평가방법을 도출하였다. 본 논문에서 제시된 균열깊이 평가기법은 국내 원전의 증기발생기관리프로그램에 활용되어 원전의 신뢰성 향상에 기여할 것으로 기대된다.

• 한국산업보건학회지
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• 제11권1호
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• pp.42-47
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• 2001

The purpose of this study was to investigate for filtration efficiency of several dust masks, comparing with filtration efficiency certified by KOSHA(Korea Occupational Safety & Health Agency), and to require of the right use of protective respirators. Using a welding fume generator and chamber, several dust masks, which were widely used in the workplaces in korea, were tested for their filtering efficiency for stainless steel arc welding fume. The filtration efficiency testing system consisted of a welding fume generator, a chamber and a filtration unit. The filtration unit was made of a mask which was inserted into the sampling cassette and another sampling cassette, which contained mixed cellulose ester filter paper. These two cassettes were connected with tubing. Stainless steel arc welding fume generator was delivered into an chamber. The welding fume in the chamber was passed into the filtration unit with flow rate of 30 liter/min. The welding fume filtration efficiency was evaluated by gravimetric measurement. Metal concentrations in the welding fume before and after filtration were measured with inductive coupling plasma analyzer. Following results were obtained: Filtration efficiency of welding fume for common hygienic mask was 63.82% and the average efficiencies for A, B, C, D, E, F and G masks were 94.62%, 96.58%, 83.20%, 82.76%, 77.25%, 86.55% and 93.22%, respectively. Our results indicate that dust masks used widely in the welding workplaces in korea are not proper for protecting worker's health and then the use of fume mask should be required.

• The Korean Journal of Physiology
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• 제9권2호
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• pp.17-22
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• 1975

Adult nonpregnant female rabbits were subjected to the study of the effects of carbon monoxide inhalation on the uterine motility. Animals were anesthetized with intravenous injection of nembutal, 35 mg/kg, and the uteri were exposed. Polyethylene tubing which had a small hole near the blind tip was inserted in the loop and normal saline was infused at a constant rate of 1.5 ml/min. On the other end of the loop, an outlet of fluid was made. When a peristaltic wave proceeded to the hole, a rise of the pressure was ensued and it was transmitted to the pressure transducer, making an upward deflection of the recording pen on the physiograph. Carbon monoxide, 1,000 ppm in the concentration, was inhaled through a tracheal cannula for 30 minutes, following fresh air for 30 minutes. In some cases, pure oxygen was also supplemented for another 30 minutes. Uterine motility was expressed in terms of the impulse that was the time integral of the pressure and of the frequency of the peristaltic waves. The results obtained were as follows. 1. When 1,000 ppm carbon monoxide was inhaled for 30 minutes, the impulse dropped to $72{\pm}16.5%$ and the frequency to $75{\pm}22.7%$ of the values obtained before the gas administration. 2. By fresh air for 30 minutes, the impulse and the frequency restored to $77{\pm}25.7%$ and $92{\pm}21.1%$, respectively. 3. By the supplement of pure oxygen for 30 minutes, no remarkable improvement were revealed, showing $89{\pm}35.2%$ in the impulse and $91{\pm}10.8%$ in the frequency, respectively. 4. There was an appreciable discrepancy in the recovery courses of the impulse and the frequency, suggesting different mechanisms attributable to the alteration by carbon monoxide inhalation.

• Design & Manufacturing
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• 제7권1호
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• pp.45-49
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• 2013

Since the shell-molds are used to make casting the metal parts for the automobile industry, the quality may well be inconsistent with the lower productivity, increasing the cost of the end products. The primary elbow design shell molded steel castings being produced through extrusion process has $180^{\varnothing}$ O.D., $150^{\varnothing}$ I.D., 14mm thickness and 400mm length, while being processed onto the left side of the tubing. The primary cause for the poor processing is the uneven manual shell molding. If the manual shell molds should be produced to have even quality, they would not be processed for tube linking. The purpose of this study was to develop the flask-molds for manufacturing of the shell molds to ensure mass-production, consistent quality, ommission of processing and comfortable working environment. For this purpose, four flask-molds were produced and thereby, four shell molds were assembled. In particular, the shell molds for processing were formed of the fine coated sand to be blown. As a result, productivity increased about three times, while a consistent quality was ensured. Furthermore, the tubes could be linked with each other without being processed, while pallets could be stacked, stored, transported and managed more easily. In a nut-shell, the molding theory could be applied more effectively. However, it is conceived that this study should be followed up by future studies which will research into reliability and endurability of the end products.

• Journal of Dairy Science and Biotechnology
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• 제25권1호
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• pp.1-7
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• 2007

유청을 기초로 하는 배지를 제조하여 Lactobacillus brevis를 배양하면서 유청 단백질로부터 기능성 펩타이드 생성을 알아보고자 하였다. Lb. brevis의 적정생장에 필요한 배지성분의 농도는 2% 유청 분말, 1%의 포도당 및 0.5%의 효모추출물이었다. Lb. brevis의 생장은 효모 추출물의 보충이 포도당의 보충보다 더 효과적이었다. 이 유청 배지에서 Lb. brevis의 생장은 2.0 ${\times}$ 10$^8$CFU/mL에 달하였다. 생장 후의 유청 배지를 10,000 ${\times}$ g에서 10분간 원심분리하여 그 여액으로부터 얻은 유청단백분해물은 ACE 효소 억제 효과가 나타났다. 분자량 8,000Da 이하로 부분 정제한 분획의 ACE에 대한 억제효과는 유청단백분해물의 64.7 ${\pm}$ 3.6%, IC$_{50}$은 38.8 ${\pm}$ 2.2 mg/mL로 나타났다. 따라서 유청을 기초로 한 배지는 젖산균으로부터 유청 단백질을 발효하여 ACE 억제 효과를 주는 펩타이드 생산에 적합한 배지임을 알 수 있었다.