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전재용,안희창,한예식,이정윤 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.1
As the society has been industrialized, the number if industrial accident has increased. The hand surgeries have increased as the result of hand injuries in case of handing machine, postburn scar contractures of the hand and congenital anomalies of hand. The tourniquets used in these operations are essential instruments. The cause of tourniquet paralyses are carelessness in using touriquets and disorder of tourniquet. The causes of tourniquet paralysis seem to be related to tourniquet pressure and inchemic time. We experienced 5 cases of tourniquet induced paralysis of arm after the use of tourniquet. We surveyed similar cases of other surgeons and presented the cause of this serious complication. As a result, we recommend for the prevention of tourniquet induced paralysis as follows. 1. Check the pressure gauze before the use of s tourniquet. 2. Removal of the tourniquet cuff after deflation 3. Removal of the soft bandage after removal of the cuff 4. Optimum pressure for obtaining the bloodless field Adult : 250/300㎜Hg(upper/Lower extremity) Child : 200/250㎜Hg(Upper/Lower extremity) 5. Recommendable tourniquet time is within 2 hours. 6. Tourniquet should be placed 10 ㎝ above the epicondyle in the upper extremity. 7. Tourniquet be released in case of dissection of major artery due to prevention of postoperation hematoma
전에스더,김재환,한병찬,福山洋,김무한,윤현도 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
In the scope of a larger research project aimed at the development of new fiber reinforced cement composites with improved tensile strength and ductility, numerous single fiber pullout tests from different concrete matrix were performed Fiber debonding and pullout have a large influence on the tensile stress - crack opening behavior of fiber concrete. Both debonding and pullout depend on the quality of the matrix, as well as on the type and quality of the steel fibers, and the applied fiber volume content. In this paper, all fiber pullout tests were carried out using high strength twisted wire strand steel cords. The pullout behavior from plain matrix was studied. The w/c ratio of the mixtures, fiber length, embedded length influence the pullout behavior.
김치저장성 향상을 위한 동결방법이 배추조직의 물성변화에 미치는 영향
양진한,박소희,유진현,임호수,조재선,황성연 한국식생활문화학회 2003 韓國食生活文化學會誌 Vol.18 No.2
김치를 10˚C에서 8일간 숙성시켜 산도 0.6~0.7%로 숙성된 김치를 -70˚C와 -20˚C로 냉동하며 -20˚C에서 저장하면서 배추 조직의 elasticity, hardness, 세포 조직의 변화, 드립양을 실험한 결과는 다음과 같다. -70˚C에서 급속 동결한 것과 -20˚C에서 완만 동결한 냉동 김치 중 배추조직의 elasticity는 냉동 저장 15일까지 감소하다 일정하게 유지되었고 hardness는 거의 변화가 없었으며 냉동 방법에 따른 변화도 거의 나타나지 않았다. 투과 전자현미경으로 관찰한 결과 control의 경우 세포벽이 매우 두꺼우며 세포의 모양들이 잘 보존되어 잇는 것을 볼 수 있었고 -20˚C로 냉동 처리하여 해동시킨 세포벽들은 많이 손상되어 있음을 볼 수 있었으며 -70˚C로 급속 냉동시료의 경우 세포벽의 손상 정도가 -20˚C로 냉동 처리한 시료보다 덜 파괴되어 있음을 볼 수 있었다.한편 냉동 저장기간 동안 드립의 손실량의 변화는 -70˚C로 냉동 처리한 시료의 드립양은 3~4%정도로 -20˚C로 냉동 처리한 시료의 5~6%에 비해 적은 것을 알 수 있었다. This study was conducted to investigate the effect of freezing methods, show freezing at -20℃ and rapid freezing at -70℃, on physical properties of Chinese cabbage in frozen Kimchi during storage at -20℃. Elasticity of midrib of Chinese cabbage in frozen Kimchi was decreased until 15 days and did not changed thereafter during storage at -20℃, Hardness of that was not changed during storage. Those results of elasticity and hardness of slow frozen sample are similar to rapid frozen sample. By the morphological observation through transmission electron microscope, more of cellular structure of Chinese cabbage in slow frozen was destructed than that of rapid frozen sample. Drip loss was more in slow frozen sample than that in rapid one.
홍경한,전상신,이승재,박찬수,권일욱,김재열,김병철,하옥남 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.4
Fin-tube type(Fin-type) heat exchanger has been tested in order to replace the heat exchanger of parallel flow type(P.F-type) which is now widly used in automobile air conditioning system. The following conclusions are drawn by the comparison of the characteristics of the heat exchangers. Evaporator and condenser capacities and COP(Coefficience of performance) were varied as with the compressor speed, outdoor air temperature and air flow rate changed, which much influenced on the characteristics of the air conditioning system. Evaporator and condenser capacities were increased with increasing compressor speed and outdoor air temperature. Evaporator and condenser pressures of Fin- type were decreased by 7% and 5% respectively compared with those of P.F-type. The COP of Fin-type was decreased with increasing outdoor air temperature and compressor speed. The COP of P.F-type was decreased by 14% compared with that of Fin-type.
조병욱,전옥철,김윤준,한철,최재곤 조선대학교 생산기술연구소 1999 生産技術硏究 Vol.21 No.2
A new thermotropic liquid crystalline copolyester(TLCP) was synthesized by condensation polymerization of 2,6-naphthalene dicarbonyl chloride with the corresponding diol having a tetramethylene and a hexarnethylene group. The blends of the TLCP with PEN were prepared by the coprecipitation from a common solvent. The TLCP and blends (2, 5, 10 and 20wt% TLCP) were characterized in terms of their thermal, mechanical properties and morphology. The TLCP in the melt state showed nematic mesophase identified by thread-like optical texture. The glass transition temperature (T_(g)) and cold crystallization temperature (T_(c)) of PEN in the blends decreased with increasing the content of TLCP and the TLCP acted as anucleating agent for the matrix polymer. Interfacial adhesion between the TLCP and PEN seemed to be poor. The modulus of TLCP/PEN blends was enhanced as the TLCP content increased.
이정규,전지현,김민정,이규재,김한겸,조현득,채양석 大韓法醫學會 1999 대한법의학회지 Vol.23 No.2
Although it is known that hypothyroidism can cause cardiac dysfunction, it is very hard to find a case report on sudden death due to hypothyroidism. There are only two reported cases on mediline; one is about a 15-year-old girl who died suddenly of Hashimoto's thyroiditis and the other is about a 31-year-old man who also died suddenly of hypothyroidism associated with chronic lymphocytic thyroiditis. Recently we found a young woman who unexpectedly died while she was sleeping. She was diagnosed as hypothyroidism when she went to hospital about a month before she died. At autopsy there were roughly four abnormal findings; Hashimoto's thyroiditis, mild chronic active hepatitis, diverticulosis and accessory spleen. Trace of chlorpheniramine was detected in gastric remains and blood alcohol level was 0.37 percent. To our knowledge, this is the first case reporting sudden and unexpected natural death associated with hypothyroidism in Korea.