오골계 난백에서 분리한 Lysozyme의 항균작용

오홍록,배기환 충남대학교 약학대학 의약품개발연구소 1987 藥學論文集 Vol.3 No.-

A lysozyme is isolated and purified partially from the egg white of Korean native Ogol fowl(Natural monument No. 265) by the method of direct crystallization. The bacteriolytic activities of 1% lysozyme against Staphylococcus aureus 57, Bacillus subtilis ATC 6633, and Escherichia coli NIHJ-JC2 was investigated with or without some other antibacterial materials in the nutrient broth culture. According to the results, 1% lysozyme showed the appreciable bacterolytic activities of about 12~16% to the almost of bacteria cultured. The synergistic effect with the lysozyme and some antibacterial materials on the growth inhibition of the bacteria cultured exhibited higher in order of the 0.001% magnolol -22%, the 0.001% honokiol -14% against S. aureus, and of the 0.0005% erythromcin -29%, the honokiol -22%, the magnolo,l -17%, the 0.005% phospholipase -6% against E.coli. And that synergistic effect against B. subtilis showed a fairly high level of about 52% with the erythromycin but not any effect with others.

CT 보험급여 전후의 CT 및 MRI검사의 이용량과 수익성 변화

서종록,유승흠,전기홍,남정모 한국병원경영학회 1997 병원경영학회지 Vol.2 No.1

In order to analyze the shifts in the volume and profits of Computed Tomography(CT) and Magnetic Resonance Imagine(MRI) utilization for a year before and after the implementation of insurance coverage for CT, this study has been undertaken examining CT and MRI cost data from 'Y' University Hospital situated in Seoul, Korea. Following are the results of this study : 1. The medical insurance payment for CT, implemented on January 1, 1996, increased CT utilization from January 1996 to April 1996 due to low insurance premiums : however, from May 1996 the number of CT cases significantly decreased as a result of strengthened medical cost reviews and the new 'Detailed standards for approval of CT' announced near the end of April 1996 by the insurer. 2. Since the implementation of insurance coverage for CT, CT fee reduction rates for reimbursements by the insurer to the hospital were 50% and 40% for January and February, respectively, and 31% and 15% for March and April. A significant point in the lowering of the reduction rate was reached in May at 11% : furthermore, since June the reduction rate fell below the average reduction rate for reimbursements for all procedures. If the 'Detailed standards for approval of CT' had been announced before the implementation of insurance coverage for CT, CT utilization would not have been so high due to the need to meet those 'standards'. In addition, loss of hospital profits resulting from the reduction for reimbursements would not have occurred. 3. The shifts in MRI utilization showed that there was no particular change with the beginning of insurance coverage for CT, and the introduction of the 'Detailed standards for approval of CT' made MRI utilization increase because MRI is free of restrictions imposed by the insurer. 4. The relationship between CT utilization and MRI utilization shoed that they were supplementary to each other before insurance coverage for CT, but that CT was substituted for MRI because of strengthened medical cost reviews after the beginning of insurance coverage for CT. 5. The shifts in volume by patient characteristics showed that the number of inappropriate case patients, according to the insurer's "Standards for approval", decreased more than the number of appropriate case patients after the introduction of insurance coverage for CT. Therefore, the health insurance fee schemes for CT have influenced patient care. 6. The shifts in profits from CT utilization showed a net profit decrease of 31.6%. In order to match the pre-coverage profit level, 5,471 more cases would need to be seen and productivity would need to be increased by 32.7%. This profit decrease resulted from a decrease of CT utilization and low reimbursements. With insurance coverage, net profits from CT were 24.4%, and a margin of safety ratio was 39.6%. Because of the net profits and margin of safety ratio, CT utilization fees for insured appropriate cases could not be considered inappropriate. 7. The shifts in profits from MRI utilization before and after the introduction of CT coverage showed that in order to match pre-CT coverage profit levels, 2,011 more cases would need to be seen and productivity would need to be increased by 9.2%. The reasons for needing to increase the number of cases and productivity result from cost burdens created by adding new MRI units. But with CT coverage already begun, MRI utilization increased. Combined with a minor increase in the MRI fee schedule, MRI utilization showed a net profit increase of 18.5%. Net profits of 62.8% and a 'margin of safety ratio' of 43.1% for MRI utilization showed that the hospital relied on this non-covered procedure for profits. 8. The shifts in profits from CT and MRI utilization showed the net profits from CT decreased by 2.33 billion Won while the net profits from MRI increased by 815.7 million Won. Overall, these two together showed a net profit decrease of 1.51 billion Won. The shifts in utilization showed a functional substitution relationship, but the shifts in profits did not show a substitutionary relationship. From these results, We can conclude that if insurance is to be expanded to include previously uncovered procedures using expensive medical equipment, detailed standards should be prepared in advance. The decrease in profits from the shifts in coverage and changes in fees is a difficult burden that should be shared, not carried by the hospital alone. Also, a new or improved fee schedule system should include revised standards between items listed and the appropriateness of the fee schedule should constantly be ensured. This study focused on one university hospital in Seoul and is therefore limited in general applicability. But it is valuable for considering current issues and problems, such as the influence of CT coverage on hospital management. Future studies will hopefully expand the scope of the issues considered here.

특수기능성섬유가 심박변화도와 심리변수에 미치는 효과

이명수,김혜경,김혜정,박기원,문성록 한국의류산업학회 2003 한국의류산업학회지 Vol.5 No.3

The study investigated the effect of multi-functional fabric on the autonomic nervous function and psychological variables of 20 students. The experimental group exhibited lower values in anxiety, depression, fatigue and stress level and higher emotional level. This study reveals that multi-functional fabrics reduced the low frequency/high frequency power ratio of heart rate variability. These results support the multi-functional fabrics increases cardiac parasympathetic tone. In addition, experimental group were found to have lower heart rate compared with controls. This augmented heart rate in experiment provides support for stablizing autonomic nervous system. In conclusion, multi-functional fabrics may stabilize the autonomic nervous system and psychological symptoms.

외과적 합병증을 동반한 십이지장 궤양의 임상적 고찰

김기영(Ki Young Kim),박용기(Young Ki Park),최창록(Chang Rock Choi) 대한외과학회 1992 Annals of Surgical Treatment and Research Vol.43 No.1

Ka-대역 계단형 도파관 벤드 최적 설계 및 제작

김기록(Ki-Rock Kim),주병국(Byung-kook Joo),방재훈(Jae-Hoon Bang),안병철(Bierng-Chearl Ahn),전종훈(Jong-Hun Chun) 한국정보기술학회 2009 한국정보기술학회논문지 Vol.7 No.6

In this paper, we present the design procedure of a stepped bend which can be adapted to multi-layer waveguide structures. Optimum dimensions of the bend are obtained using a commercial software for the center frequency ranging from 1.1-1.9 times the waveguide cutoff frequency. To verify the accuracy of the proposed method, we design, fabricate, and measure a bend operating at 30-40㎓. The fabricated bend shows a good agreement with simulation and has reflection coefficient less than -24㏈ and a transmission coefficient greater than -0.2㏈.

The Identification of Success Factor for E-Learning System

Ki-Hwan Hwang,Hyoung-Rock Kim 한국정보기술학회 2011 JOURNAL OF ADVANCED INFORMATION TECHNOLOGY AND CON Vol.1 No.2

Baudelaire의 理論家的 側面

奇世祿 全南大學校 人文科學硏究所 1976 용봉인문논총 Vol.6 No.-

프랑스 문학에서 낭만주의가 승리를 거두고 난 1850년 이후, 여러 문학이론들이 족출했었는데 그 착잡한 이론의 무중을 뚫거 1880년대에 이르자 시에 있어서 양대 진로가 그 윤곽을 대강 드러내 보였다. 그 하나는 실현에 기반을 두고 생활과 역사를 생각하면서 물질이나 도의세계로 진행했으며, 다른 하나는 현실을 초월한 채 이상을 향해 전진하여 그것을 기호나 외면적인 것으로 간주하여 대처해 갔다. 이러한 양 조류는 그 이론면에서 선명하게 대조가 되었지만 작품면에서는 그렇게 분명하지 않았었다는 것은 유의해 둘만 한 일이다. 그러나 이론면에서 보면, 흔히 문인들은 확신을 가지고 그런건 아니었지만 사실주의(실재론)와 현상주의(관념론)라는 양극의 한쪽으로 결국 방향을 잡고 마는 것이었다. 그런데 현상주의 경향이 취했던 가장 현저한 형식은 상징주의였으므로 본고에서는 독자적인 이론의 전개에 의해 상징파의 선구자로서 숭배를 받은 Baudelaire의 일면을 살펴 보기로 한다.

Meter-long coated conductor by R2R PVD methods on RABiTS template

Rock-Kil Ko,Ho-Sup Kim,Hong-Soo Ha,Jun-Ki Chung,Joo-Saing Yang,Yu-Mi Park,Dongqi Shi,Kyu-Jeong Song,Chan Park,Sang-Im Yoo,Seung-Hyun Moon,Young-Cheol Kim 한국초전도저온학회 (구 한국초전도저온공학회) 2004 한국초전도저온공학회논문지 Vol.6 No.4

Characterization and Modeling of 1/<tex> $f$</tex> Noise in Si-nanowire FETs: Effects of Cylindrical Geometry and Different Processing of Oxides

Rock-Hyun Baek,Chang-Ki Baek,Hyun-Sik Choi,Jeong-Soo Lee,Yun Young Yeoh,Kyoung Hwan Yeo,Dong-Won Kim,Kinam Kim,Kim, D M,Yoon-Ha Jeong IEEE 2011 IEEE TRANSACTIONS ON NANOTECHNOLOGY Vol.10 No.3

<P>In this paper, the volume trap densities <I>Nt</I> are extracted from gate-all-around silicone-nanowire FETs with different gate oxides, using a cylindrical-coordinate-based flicker noise model developed. For extracting <I>Nt</I>, the drain-current power spectral densities were measured from a large number of identical devices and averaged over, thereby mimicking the spatial distribution of trap sites inducing 1/<I>f</I> curve. Also, effective mobility and threshold voltage were simultaneously extracted with the series resistance to characterize the 1/<I>f</I> noise in terms of intrinsic values of these two channel parameters. The volume trap densities thus extracted from different oxides (in situ steam-generated oxide/rapid thermal oxide/nitride-gated oxide) are compared and further examined using hot-carrier stress data. Finally, radius dependence of the cylindrical 1/<I>f</I> model developed is discussed.</P>

<tex> $C$</tex>– <tex> $V$</tex> Characteristics in Undoped Gate-All-Around Nanowire FET Array

Rock-Hyun Baek,Chang-Ki Baek,Sang-Hyun Lee,Sung Dae Suk,Ming Li,Yun Young Yeoh,Kyoung Hwan Yeo,Dong-Won Kim,Jeong-Soo Lee,Kim, D M,Yoon-Ha Jeong IEEE 2011 IEEE electron device letters Vol.32 No.2

<P>Presented in this letter are the <I>C</I>-<I>V</I> data, measured from nanowire capacitors, which have been fabricated by connecting in parallel a large number of identically processed nanowire FETs. The <I>C</I>-<I>V</I> curves were examined over a range from accumulation to inversion with varying frequencies and at different electrode configurations. The gate response of the undoped and floating channel is investigated using <I>C</I>-<I>V</I> data, and the inversion charge and carrier mobility are accurately extracted by eliminating the effects of parasitic capacitances and series resistance <I>R</I><SUB>sd</SUB>. These observed data are compared with the data from planar MOS capacitor.</P>