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대전광역시 양축농가의 축분뇨 관리 실태 및 VOCs 농도 조사
이봉덕,이수기,오홍록,허정민,정기철,김성복 충남대학교 농업과학연구소 2005 농업과학연구 Vol.32 No.1
This study was carried out to investigate the style of livestock house, concentration of malodorous substances of livestock feces and livestock houses in Daejeon area. Among the livestock houses investigated, as most of cow pens(94.5%) have sawdust or chaff on the bottom, there was no leakage of feces out of pen. Most pig pens adopted slury style, but some of them currently use buffering material on the bottom. It is thought that there will be no possible contamination leakage. When it comes to hen house, all the broiler house use litters on the bottom and all the layer house use scrapper. It is also thought that there will be no possible contamination leakage. 3 out of 12 deer pens used buffering material on the bottom, 10 places were maintained in a traditional method, and 7 places left possibility of contamination leakage considering whether the roof was installed or not. The contents of ammonia, amine and volatile fatty acid in fresh feces were lower compared to rotten feces, but the concentration of sulfur-containing matter - hydrogen sulfide, methylmercapthan and ethylmercapthan were higher compared to rotten feces. In the case of malodorous ingredient in livestock houses, only small amount of ammonia and hydrogen sulfide were detected in pig pen and hen house, and other ingredients were not detectable. And those who are engaged in animal husbandry reacted negatively to the use of feed additives for decreasing malodor. In conclusion, it is not worrisome that contamination can be leaked out of animal raising facilities. But if we take into consideration that the point of investigation time is wintry season, there should be more considerate attitude. And feed additives for decreasing malodor need establishing criteria in the manufacturing process.
Durable Press 加工에 있어서 遊離포름알데히드의 捕捉效果
李廷玟,裵基瑞,李哲鎬 忠南大學校 産業技術硏究所 1986 산업기술연구논문집 Vol.1 No.2
This study was investigated on the effects of scavenger treatment for low formaldehyde release from durable press finished cotton fabrics using saturation pad method. And possibility of foam application in durable press cotton fabrics was investigated. Cotton cellulosic fabric was crosslinked with DMDHEU in the presence of magnesium chloride as a catalyst and polyhdroxy alcohols as a formaldehyde scavenger. Optimum concentration of formaldehyde scavengers on the durable press finished cotton fabrics were about 4%. Most favourable pH of the pad solution and wash water were about 5. The glycols and glycerol were the most effective formaldehyde scavenger. The glycol class of polyhydroxy alcohol is water soluble and is compatible and effective with crosslinking agent.
배기서,이래연,이정민,김청섭 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.2
The purpose of this study was to develope the color matching technic between fabrics and color CRT which is a commonly used color matching machine. The former researchers had focused on the theoretically color matching technic between CIE and RGB color co-ordinates, but in this study we tried simulating the colors obtained from fabrics on the color CRT by using experimental method.
차준용,이정민,모상영,이재달,배기서,홍영기 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2
Fiber-reinforced composite materials are used in a wide variety of applications in the advanced field of industries such as electric clutch, motor, car, space and aviation etc. It is well known that the brake lining made of fiber-reinforced composites show excellent friction and wear properties compared to the conventional asbestos brakes and also are known to have high absorption energy and excellent high temperature properties in braking. In order to endow high friction and wear stability to the commercial brake lining, the waste fiber such as cotton, PAN, PET, nylon,kevlar, glass and it's binary mixture fibers were used the fiber reinforcements. The fiber/phenolic resin system has been carried out by preform molding method. The friction tester was especially designed and prepared for evaluation of frictional properties such as friction coefficient and stability. The physical properties of fiber reinforced composites were investigated in terms of the 3-point bending strength, the properties of friction, and morphology. The results obtained from the work are as follows ; 1. The friction properties of the cotton fiber reinforced composites were similar to those of the commercial brake linings, but in the cases of reinforcement of kevlar, glass. we can improve those properties, 2. The proper amount of organic and inorganic fiber mixtures can improve the properties of friction and the mechanical properties, 3. It is more desirable to manufacture hybrid fiber reinforced composites because single cotton or synthetic fiber reinforced composites aren't improved frictional properties, and 4. On evaluating frictional properties of waste fiber reinforced composites, frictional properties of waste fiber reinforced composites are superior to commercial disc lining. Therefore we can confirm practical possibility of waste fiber reinforced disc lining.
베체트병 환자에서 Azathioprine으로 유발된 급성 췌장염 1례
김기향,권민정,김동기,김애란,김윤정,박지훈,이영태,박보민,김동욱 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Although many drug are thought capable of initiating acute pancreatitis, following azathioprine administration represents the 5% incidence by far the highest recorded incidence to date. We report a 35-year-old male who developed acute pancreatitis in the course of treatment with azathioprine for Behcet's disease. He was admitted due to abdominal pain, diarrhea, and fever for 10 days. Serum amylase and lipase levels were 510U/L and 3702U/L respectively. The abdominal CT scan revealed diffuse enlargement of the pancreas. There was no history of alcohol use or gall bladder disease. We considered drugs, especially azathioprine, as the cause of acute pancreatitis. We diagnosed it as acute pancreatitis. The patient was treated conservatively with hydration and analgesics. The symptom subsided within four days. Five days later, azathioprine was resumed. And the patient complained of abdominal pain. The elevated levels of serum amylase and lipase confirmed the recurrence of pancreatitis. His symptom subsided when azathioprine intake the stopped, and the serum amylase and lipase levels returned to normal level within five days.
Park, Min Hee,Jin, Hee Kyung,Min, Woo‐,Kie,Lee, Won Woo,Lee, Jeong Eun,Akiyama, Haruhiko,Herzog, Herbert,Enikolopov, Grigori N,Schuchman, Edward H,Bae, Jae‐,sung EMBO 2015 The EMBO journal Vol.34 No.12
<P>Many reports have revealed the importance of the sympathetic nervous system (SNS) in the control of the bone marrow environment. However, the specific role of neuropeptide Y (NPY) in this process has not been systematically studied. Here we show that NPY-deficient mice have significantly reduced hematopoietic stem cell (HSC) numbers and impaired regeneration in bone marrow due to apoptotic destruction of SNS fibers and/or endothelial cells. Furthermore, pharmacological elevation of NPY prevented bone marrow impairments in a mouse model of chemotherapy-induced SNS injury, while NPY injection into conditional knockout mice lacking the Y1 receptor in macrophages did not relieve bone marrow dysfunction. These results indicate that NPY promotes neuroprotection and restores bone marrow dysfunction from chemotherapy-induced SNS injury through the Y1 receptor in macrophages. They also reveal a new role of NPY as a regulator of the bone marrow microenvironment and highlight the potential therapeutic value of this neuropeptide.</P>
터보 인버터 알고리즘을 탑재한 유도가열 조리기 구현에 관한 연구
이민기(Min-Kie Lee),고강훈(Kang-Hoon Koh),권순걸(Soon-Kurl Kwon),이현우(Hyun-Woo Lee) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
The voltage resonating inverter has a defect in switching element that works at 5 or 6times higher than input voltage. Especially, it is very difficult to choose the switching device is very high for the 220[V]commercial voltage.<br/> In this paper, it is proposed the optimum method to realize the turbo 2000[W] power for induction cooker that is employed the 900[V] IGBT with decreasing operating voltage of the switching component by making the 220[V],1500[W] inverter through the clamp mode voltage resonating inverter.
Network RTK-GPS/GLONASS에 의한 지적측량 활용성 평가
이종민(Lee, Jong Min),이인수(Lee, In Su),차득기(Tcha, Dek Kie) 한국측량학회 2010 한국측량학회 학술대회자료집 Vol.2010 No.4
In cadastral field GPS mainly applies to fundamental survey, while there are numerous research about cadastral detail survey using GPS application in order to increase surveying efficiency as survey technology improve. The purpose of this experiment is to analyze the accuracy of position and estimate the efficiency of GPS/GLONASS combination surveying with control points. As the result of this experiment, Network RTK-GPS/GLONASS combination survey is superior to Newtork RTK-GPS with respect to position accuracy and work efficiency.