서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

원료탄의 배합비율에 의한 활성탄의 기능성 향상

홍인권,김상철,김원일,이승범 단국대학교 1998 論文集 Vol.33 No.-

Adsorption characteristics of activated carbon were affected by raw materials and operating conditions. Coal based activated carbons were prepared in a rotary kiln type furnace and the pretreatment effect of raw materials for preparing activated carbon was investigated. Steam was employed in manufacturing process as an activation agent. Activation temperature affected the properties of activated carbon. The adsorption capacity, or iodine value was increased in te activation temperature range of 800 to 900℃, yet decreased at higher temperatures than 900℃. Then, the activation effect was analyzed in terms of the activated carbon(AC) yield. It was found that the optimum heating rate and steam amount were 2.9℃/min, and 1g steam/g coalㆍhr, respectively. Effect of coal blends on the preparation of activated carbon was examined. The developing patterns of pore structure were varied with mixing ratio. As the amount of anthracite coal was increased, AC yield increased but adsorption capacity decreased. Pore size and pore size distribution were examined by BET specific surface area analyzer. In the AC yield range of 30∼40%, prepared activated carbon has micropores of sizes below 30Å and iodine value was above 1,000㎡/g in the temperature range of 850∼900℃. Benzene adsorption capacity was similar to those of mixed and Fushun coal but MEK adsorption capacity was superior to that of functions mixed coal. We found that the activated carbon based on coal has comparable to those of commericial products.

회귀분석(regression analysis)을 이용한 개인별 혈중알콜농도의 감소율 계산

홍성욱,권미아,최혜진,박용훈,인상환,김동우,정주연,우상희,박혜성 內務部 國立科學搜査硏究所 2002 國立 科學 搜査 硏究所 年報 Vol.34 No.-

전주기술을 이용한 로터리스크린 제조에 관한 연구

권혁홍,박상호 대진대학교 2004 大眞論叢 Vol.11 No.-

To simple the manufacturing process of rotary screen, this study was adopted electroforming technology and produced silicon rubber mandrel. Furthermore, to indicate the optimal condition for the acquisition of high-qualified rotary screen product, the experiment was executed with pH, time, sulfamate nickel solution according to density which were the main factors to decide the condition, then compared it with the product made by original "S" Company in Holland. As a result, the figure of Hole was more obvious and correct. Also the open size increased more than 2-3%.

냉각수온 변화에 따른 가솔린 기관 특성에 관한 실험적 연구

권기린,홍성수 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1

The purpose of this study is to prevent the stick, scuffing. scratch between piston and cylinder in advance, to obtain data for duration test in actual engine operation. The temperature gradient in cylinder bore according to coolant temperature were measured in use of 1.5 1 class gasoline engine. 20 thermocouples were installed at points of 2mm inside from cylinder wall near top ring of piston in cylinder block. which points have suffered major thermal loads and suggested as proper measurement points for engine design by industrial engineers. Under full load and 70%. 80% and 90% coolant temperature conditions. the temperature in cylinder block and engine oil increased gradually in according to the increase of coolant temperature, the Siamese side temperature of top dead center is 142% in peripheral distribution. that is about 20% higher than thrust. anti-thrust. and rear side temperature. the fuel consumption in 70% coolant temperature is lower than 80% and 90% coolant temperature, the engine torque in 80%. 90℃ coolant temperature condition is about O.5kg.m higher than 70% coolant temperature.

Paste법에 의한 0.1V강의 침붕처리에 관한 연구

권동일,김강형,김진관,이성훈,윤재홍 國立 昌原大學校 産業技術硏究所 1994 産技硏論文集 Vol.8 No.-

0.1V강의 표면경도를 향상시키기 위해서 Boronizing처리를 실시하여 Hv=1500∼2000의 높은 경도값을 나타내는 붕화물층을 얻었다. 붕화물층의 두께와 처리시간과의 사이에는 방물선관계를 나타내었으며 붕화물층 생성 겉보기 활성화에너지는 94kJ/mol이다. 또한 900˚C, 3시간 침붕처리했을 때가 가장 높은 경도분포값을 나타내었으며 그 이상 장시간 처리하면 오히려 경도가 감소하는 경향을 나타낸다. 그리고 침붕층은 20% HCl, 20% H₂SO₄용액에서는 뛰어난 내식성을 가지나, 20% HNO₃용액에 대해서는 상대적으로 내식성이 떨어졌다. 그리고 내고온산화성은 대기중 800˚C까지는 침붕처리한 시편이 우수했으나 900˚C부터는 오히려 감소했다. To improve the surface hardness of the 0.1V steel, by Boronizing Treatment, We got boride layer showing high hardness, Hv=1500∼2000. A parabola relationship was appeared between boride layer thickness and treatment time, and apparent activation energy to form the boride layer 94kJ/mol. Moreover, We obtained the most high hardness distribution value when had the boronizing treatment for 3 hours at 900˚C. On the contrary, If we did boronizing treatment above 3 hours, the hardness appeared decreasing tendency. The boride layer had a good corrosion resistance at a solution of 20% HCl and 20% H₂SO₄, but correlatively the corrosion resistance of the boride layer was declined at a solution of 20% HNO₃. And the boronized specimen had a good high temperature oxidation resistance until 800˚C in the atmosphere but the high temperature oxidation resistance go down above 900˚C.

한국인 관상동맥의 변화양상에 대한 형태학적 연구

권태정,이상용,이한영,고영창,권기석,조재홍,김태공,김유훈,조갑래,서중석,이원태 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

XENIX OS에서 TERMINAL을 이용한 조합형한글 구현에 관한 연구

권순걸,박재철,이현우,서기영,홍성태 慶南大學校 附設 工業技術硏究所 1992 硏究論文集 Vol.10 No.-

제닉스 시스템의 커널에서는 한글을 읽거나 쓸수가 없으며 한글을 구현하기 위해 바이어스콜이나 비디오램을 직접 억세스하는 등의 컨트롤이 허용되지 않는다. 그러나 제닉스 시스템의 입, 출력 시스템을 잘 살펴보면 한글을 사용하기 위한 해결점을 찾을 수 있다. 영문 제닉스는 키보드에서 입력되는 8비트 코드에서 최상위비트를 무시하여 7비트로 스트립 시키는데 이것을 막고 제닉스가 FOH~FFH까지의 코드를 제어 코드로 사용하지 못하게 함으로써 모든 한글을 터미널상에서 사용 할 수 있게 된다. 한편 제닉스의 표준 메일을 이용 할때에는 80H 이상의 코드가 입력되면 모두 \와 8진수의 조합으로 변경시켜서 출력하는 C함수를 사용하기 때문에 이부분을 수정하고 한글 에코 명령이 포함된 쉘 스크립은 8진코드로 바꾸어 주는 소오스를 활용함으로서 제닉스에서 터미널을 이용한 조합형 한글의 구현이 완벽하게 이루어졌다. Hangul can't be read and used from the kernel of XENIX system. To embody Hangul, the control of direct access of BIOS call or video RAM is not permitted. But a solution to use Hangul can be found through the search of input and output system of XENIX system. English XENIX OS disregards MSB from 8bit code inputting from key board and strip 7 bit. To prevent this, stty-istrip command is used. And by using stty-ixion command not to use control code from FOH to FFH of XENIX, All of Hangul can be used at the terminal. To satisfy these conditions stty-istrip-ixon command is inserted at each user's profile. While sending the letter through the standard mail of XENIX, /user/lib/mail. local program is available. then Hangul is not supported on mail. local, the reason is that if the code over ASCII code 80H is inputted in the mail. local program. C function outputting through the change into the combination of all \and octal number is used, but by modifying mail. local, all of Hangul can be available, and the shell script containing Hangul echo command can treat Hangul at the terminal by using convc source which change source to octal code. In this way combinated Hangul using the terminal from XENIX OS ard completely embodied.

유전체 공진기를 이용한 개인휴대 통신용 대역통과 필터의 설계 및 구현

권정열,이헌용,홍성용,윤중락 明知大學校 産業技術硏究所 1996 産業技術硏究所論文集 Vol.15 No.-

In this paper, the band pass filter for personal communication services was constructed and designed using λ/4 TEM mode dielectric resonators with a (Zr0.65,Sn0.35)ATi1.04O4.04 ceramic of dielectric constant εr=37.8, Qxfo=48.600 temperature coefficient of resonant frequency rf=7ppm/˚C, and Unloaded-Q (Qo) of λ/4 TEM mode dielectric resonator with inner hole size 0.9㎜ and external size 3㎜ using silver electrode is 354.5 at 1950MHz. For the band pass filter design and construction, the design theory and simulation results of band pass filter using J-inverter theory have been studied. The parameters which are evaluated by design theory are practically applied to the filter construction and the simulation results are in agreement with the measured results after fine tunnings.

정칙화 반복 영상복원 처리에 관한 연구

권혁숭,홍성용 대구보건대학 1994 대구보건대학 論文集 Vol.14 No.-

This paper introduces a regularized iterative image restoration algorithm. Generally, linear space-invariant image restoration algorithm often introduces artifacts near sharp intensity transition region. It is shown that these artifacts are attributable to the regularization of the ill-posed image restoration problem. So in this paper, two methods to reduce these artifacts in restored image are proposed. The first methods incorporates deterministic a prior information.