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운동 강도의 차이가 흰쥐의 혈액 성분과 적혈구의 형태에 미치는 영향
김부환,김종오,지용석,최대원,윤진환,정일규,김영욱,오봉석 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4
This study was to investigate the effects on hematological indices and heinz body formation in various intensity, Male Sprague-Dawley rats were randomly divided into the control group, the low-intensity exercise group, nigh-intensity exercise group (n=7 in each group). Animals of the low-intensity exercise groups were put on exercise 30 min per 1 day, 5 days per week for 6-weeks. Animals of the high-intensity exercise groups were put on exercise 120 min per 1 day, 5 days per week for 6-weeks. Red blood cell count (RBC), hemoglobin (Hgb), hematocrit (Hct), mean ceil volume (MCV), mean hemoglobin corpuscular (MCH), mean hemoglobin corpuscular concentration (MCHC) were analyzed in automated hematology analyzer (ABX Hematology MICROS 60) from 10㎕ of whole blood. Erythrocyte morphology were evaluated in super vital (Brilliant cresyl blue stain) stained blood films. In the present results, Hg, MCHC in the high-intensity exercise group was significantly decreased compared with the different exercise intensity and the control group. MCV in the high-intensity exercise group was significantly increased compared with the different exercise intensity end the control group. Heinz body formation in the high-intensity exercise group was significantly increased compared with the different exercise intensity and the control group. In the present study, it can be suggested that intensity of exercise can influence hematological variables and heinz body formation. These findings suggest that high intensity exercise induces oxidative damage to erythrocyte.
Kim ,, Bong‐,Gyu,Jung ,, Na Ri,Joe, Eun Ji,Hur, Hor‐,Gil,Lim, Yoongho,Chong, Youhoon,Ahn, Joong‐,Hoon WILEY‐VCH Verlag 2010 Chembiochem Vol.11 No.17
<P><B>Just add sugar</B>: An unnatural flavonoid‐deoxyaminosugar conjugate was biologically synthesized in <I>Escherichia coli</I> by engineering an <I>E. coli</I> nucleotide–sugar pathway and expressing a glycosyltrandfease specific for UDP‐arabinose derivatives. </P>
수용성 및 가식성 콩 단백질/�틴 블렌드 필름 제조 및 물성 연구
김성철,신용섭,정세환,유성구,박인식,김봉식,신부영 한국공업화학회 2003 응용화학 Vol.7 No.2
The manufacture of edible/biodegradable films or coatings can potentially add value to soy protein, Such films can find using as edible or nonedible food packaging materials. The effect of soy protein film-forming solutions on film formation, tensile properties of soy protein/pectin blend films were changed significantly by the amount of glycerol and the ratio of soy protein/pectin. Moreover mechanical properties of soy protein/pectin-montmorillonite clay have been studied. Tensile strength and modulus decreases as the relative humidity increased while with increasing relative humidity elongation at break increased.
김동규,김봉수,이상형,심기범,왕규창,정희원,김현집,조병규,최길수,한대희 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.2
We present a series of 42 patients with the lateral ventricular mass lesions who underwent operative removal between 1979 and 1992 at the Seoul National University Hospital. These lesions included 29 tumors, 10 benign cysts and 3 arteriovenous malformations. There were 20 lesions in the trigone, 14 in the frontal horn, 6 in the body, and 2 in the temporal horn. Together with the age of the patient, the location in the lateral ventricle and the CT or MR patterns, the range of the differential diagnosis of the lesions can be narrowed. The mass were removed by various surgical approaches ; 11 by the middle frontal gyrus, 10 by the superior parieto-occipital, 13 by the middle temporal gyrus, 4 by the anterior transcallosal, 2 by the posterior transcallosal and 3 by the combined approaches. The superior parieto-occipital approach left postoperative morbidities in 64% and other approaches in 20 to 25% of the cases. These morbidities included hemiparesis, hemianopsia, aphasia, memory distubance and seizure. Most hydrocephalus disappeared without the shunting procedure after removal of the lateral ventricular mass. The high frequency of postoperative complications in the superior parieto-occpital approach require meticulous consideration in the selection of this approach.
정봉식,이규한,김진길 東亞大學校 附設 情報通信硏究所 1999 情報通信硏究所論文誌 Vol.7 No.1
In this paper the band-stop filter that rejects the undesired 3th and 5th harmonics generated from high frequench generator is analyzed and optimized. The length of the band-stop filter is setup initially a quarter of a wavelength fo the harmonic, but initial filter structure is unable to cutoff the harmonics because of the fringing effect at the input of the choke. To reduce the mismatch between the cutoff frequency and the harmonics, the length of the choke is optimized by using iterative Levenberg-Marquardt Algorithm.
Z-80 마이크로프로세서를 이용한 TTL IC TESTER의 설계에 관한 연구
宋永圭,金奎植,洪鳳植 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.2
In this paper, detailed circuit design is given on a TTL integrated-circuit tester that can test a wide variety of 14-pin and 16-pin combinational logic systems. PIO NO.1 on the Microcomputer board is dedicated to performing the interface of key board and 7-segment display. PIO NO.2 is the major component in the chip tester. It is interfaced to the IC under test via the sockets that bring out the PIO signals to the microprocessor control system. PIO NO.2 is programmed for mode 3(control mode) operation on both of its I/O port, but PIO NO.1 is programmed for mode 0 and mode 1 The IC chip under test is automatically checked for correctness by a short program and resultant data is displayed in the 7-segment LEDs.
박봉규,김영대 대한경영학회 2003 大韓經營學會誌 Vol.16 No.6
Based on a survey of the top managers in the China electronics industry, this study examined the strategy-environment-performance paradigm in a regulated economy. This study investigated in an exploratory way the relationship between perceived environments and strategy types, and its performance implications. The results of canonical correlation analysis showed that even in a regulated economy, firms exhibited distinctive strategies, and these strategies were significantly related to perceived environmental uncertainty. Specifically, managers' perceptions of increased environmental uncertainty were found to be negatively related to proactive strategies and positively related to defensive strategies. Although the results showed partly significant, we observed that strategies were different between high and low performance firms. Implications and the limitations of this study are discussed.