외상성 고관절 탈구의 예후에 영향을 주는 요인

박찬상,조준,유병대,서영조,이명갑,이동필 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4

Background : Incidence of traumatic hip dislocation have been increased with development of transportation. Traumatic hip dislocation demands early recognition as an emergency and prompt reduction. So we designed this study to determine what kinds of factors affect the prognosis of the patient. Methods ; Eighty five patients who admitted emergency department of our hospital with the traumatic hip dislocation were enrolled in this study. Cause of injury, type of dislocation, method of reduction, the time from dislocation to reduction, age, gender and associated patellar injury were evaluated by retrospective chart reviews. Results : Average age of excellent good group(E&G) is 28±17.8 and fair and poor group(F&P) is 39±18.6, so the older the age the more poor prognosis.(P<0.05). The time to take reduction of E&G group is 18±8.2 hours and F&P group is 25±12.6 hours, so the faster the better prognosis.(P<0.05) We classify the type of hip dislocation by Thompson and Epstein method, type Ⅰ to type Ⅴ. The prognosis of type Ⅰ is better than type Ⅴ(P<0.05). Fifty five case were associated with patellar injury and they had poor prognosis than the other cases that were not associated with knee joint injury. Conclusion : In traumatic dislocated hip patients, the prognosis was poor in old age, delay in reduction, higher type of dislocation and associated with knee joint injury.

신생아 고 17α-Hydroxyprogesterone치의 추이

박은영,조진형,이수진,양승,김광남,신재훈,오필수 대한소아내분비학회 2003 Annals of Pediatirc Endocrinology & Metabolism Vol.8 No.2

불포화 폴리에스테르 수지의 물성이 폴리머 콘크리트의 강도에 미치는 영향

이필호,박재근,황보 영,이정우 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

본 연구에서는 폴리머 콘크리트의 결합재인 불포화 폴리에스테르 수지(UPR)의 물리적 성질을 조사하였다. 그 결과는 비중 1.1 g/mL, 점도 3.0 poise, styrene의 함량은 40% 내외이고 산값은 약 20이었다. 본 실험에서 제조된 폴리머 콘크리트의 압축강도는 평균 1,056 Kg/cm², 휨강도는 216 Kg/cm², 인장강도는 110 Kg/cm²이었는데, 이는 시멘트 콘크리트에 비해 비교적 좋은 역학적 성질을 나타낸 것이다. 변동계수는 압축강도의 경우 약 3%, 휨강도의 경우 5%, 인장강도의 경우 6% 내외로서 매우 양호하다. 강도비를 산출하여 본 바 압축강도와 휨강도의 비가 4.9, 압축강도와 인장강도의 비가 9.7, 휨강도와 인장강도가 1.97로서 나타났는데 이는 폴리머 콘크리트의 압축강도는 1000 Kg/cm²를 상회함을 감안할 때 휨 및 인장강도가 상대적으로 큼을 보여주는 결과이다. In this study, effect on the strength of polymer concrete of unsaturated polyester Resin's(UPR) property was investigated. The physical property of UPR was as follows; density 1.1 g/mL, viscosity 3.0 poise, the content of styrene 40%, and acid value 20. The mechanical property of Polymer Concrete was relatively good; compressive strength 1,056 Kg/cm², flexural strength 216 Kg/cm², splitting tensile strength 110 Kg/cm², The coefficient of fluctuation was 3% of compressive strength, 5% of flexural strength, and 6% of splitting tensile strength. The ratios of respective strength were 4.9(compressive strength to splitting tensile strength), and 1.97(flexural strength to splitting strength). Therefore, flexural strength and splitting tensile strength of polymer concrete was relatively big under consideration of compressive strength(1,000 Kg/cm²).

防潮堤의 壓密沈下量 解析에 관한 考察

安鍾弼,朴吉鉉,金永先 조선대학교 국토개발연구소 1988 국토개발연구 Vol.8 No.1

In Seadyke design a surface stress Calculation using osterberg chart for few point has been generally used to settlement quantity Computation. This study is developed to the Computer Program of integral formula having a Zonal triangular load, A few Case studies are examinedand find out degree of error about the Cross section. This results can be use to the seadyke design.

Zn를 첨가한 고온초전도체 Y Pr Ba₂Cu₃O 의 Raman 분석

강재필,김성재,박현진,노태호,송승기,박영민,전인 明知大學校 自然科學硏究所 1997 자연과학논문집 Vol.15 No.-

고온초전도제 Y Pr Ba₂Cu₃O 에 Zn를 첨가(x=0.00, 0.05, 0.10, 0.15, 0.20)하여 전이온도 측정, X-ray회절 실험과 Raman 실험을 하였다. Raman 측정결과 다섯 개의 시료가 일반적인 YBCO 초천도체의 Raman 스펙트럼에서 존재하는 다섯 개의 대칭활성모드(115cm¹,150cm¹.340cm¹,440cm¹,504cm¹)가 관측되었다. 이것은 Cu 와 관련된 대칭활성모드의 주파수가 모두 저주파 변위를 나타내어 Zn가 Cu(1)과 Cu(2)에 치환되었음을 의미한다. 저주파 변위 정도는 Zn에 거의 무관했으나, Raman 스펙트럼의 각 피이크의 선폭은 치환된 Zn에 의해 증가했다. 이 결과는 Zn가 Cu자리에 어느 한계 이상은 치환되지 못하고 시료 내에서 불순물상을 형성함을 나타내는 것이다. We measured transition temperature, X-ray diffraction pattern and Raman spectra of Zn added(x=0.00, 0.05, 0.10, 0.15, 0.20) high-T superconductor Y Pr Ba₂Cu₃O All samples have been observed five symmetric activity modes(115cm,150cm¹.340cm¹,440cm¹,504cm¹)which exist in Raman spectrum of general YBCO superconductor. This means Zn is substituted for Cu(1) and Cu(2) due to the fact that symmetric activity mode frequency related with Cu shows low-frequency shift. The degree of low-frequency shift was nearly independent on Zn but line width of Raman spectra peaks were increased by the substituted Zn. This results shows that Zn does not be substituted for Cu-site more than limit value and formes impurity phase in the sample.

상수처리에 있어 이산화염소의 효과에 관한 연구

홍필선,박영구 大田産業大學校 1993 한밭대학교 논문집 Vol.10 No.1

ABSTRACTThe chlorine has been used as one of the drinking water supply system, it be used universally the most economic chemical treatment and effect chemical threatment.But, in chlorine treatment, the residual chlorine in drinking water reacts with organic materials (humic substances), and to produce THMs(trihalomethanes) which is known as carcinogenic substance.In the experiment, sample of drinking water was mixed that chlorine used in the original disinfectants were summaried as be more effect then the above single treatment (chlorine) dissolved oxygen, KMnO4 consume degree, and ferric, phenol, general bacteria, trihalomethanes. The chlorine has been used as one of the drinking water supply system, it be used universally the most economic chemical treatment and effect chemical threatment. But, in chlorine treatment, the residual chlorine in drinking water reacts with organic materials (humic substances), and to produce THMs(trihalomethanes) which is known as carcinogenic substance. In the experiment, sample of drinking water was mixed that chlorine used in the original disinfectants were summaried as be more effect then the above single treatment(chlorine) dissolved oxygen, KMnO_4 consume degree, and ferric, phenol, general bacteria, trihalomethanes.

Effect of Electron Beam and ${\gamma}$-Ray Irradiation on the Curing of Epoxy Resin

Kang, Phil-Hyun,Park, Jong-Seok,Nho, Young-Chang The Polymer Society of Korea 2002 Macromolecular Research Vol.10 No.6

The effect of an electron beam and ${\gamma}$-ray irradiation on the curing of epoxy resins was investigated. Diglycidyl ether of bisphenol A (DGEBA) and diglycidyl ether of bisphenol F (DGEBF) as epoxy resin were used. The epoxy resins containing 1.0-3.() wt% of triarylsulphonium hexafluoroantimonate(TASHFA) and triarylsulphonium hexafluorophosphate(TASHFP) as initiator were irradiated under nitrogen at room temperature with different dosage of EB and ${\gamma}$-rays from a Co$^{60}$ u source. The chemical and mechanical characteristics of irradiated epoxy resins were compared after curing of EB and ${\gamma}$-ray irradiation. The thermal properties of cured epoxy were investigated using dynamic mechanical thermal analysis. The chemical structures of cured epoxy were characterized using near infrared spectroscopy. Mechanical properties such as flexural strength, modulus were measured. The gel fraction of DGEBA with ${\gamma}$-ray was higher than that of the epoxy with EB at the same dose. Young's modulus of the sample irradiated by ${\gamma}$-ray is higher than that of sample cured by EB. From the result of strain at yield, it was found that the epoxy cured by ${\gamma}$-ray had a higher stiff property compared with the irradiated by EB.

77K와 상온에서 CO(NH₂)₂의 ¹⁴N Pulsed NQR 연구

강재필,박영민,전인,김성재,최숙자,박현진,송승기,서용문 명지대학교 자연과학연구소 1996 자연과학논문집 Vol.13 No.-

77K와 상온에서 CO(NH₂)₂분말 시료의 ??N Pulsed NQR실험을 하여 위와 아래 공명 진동수, 핵 사중극 결합상수, 비대칭 인자, 스핀-스핀 완화시간, 결정 격자 진동에서의 평균 비틀림 진동수, 진동자의 관성 모먼트 등을 구하였다. 공명 진동수의 온도 의존성은 전형적인 Bayer이론의 격자 진동에 의한 주파수 변화를 보였다. Bayer-Kushida이론의 고온근사식을 실험값에 적용하여 OK에서 공명 진동수 ν??와 ν??를 구했으며, 77K와 상온에서의 스핀-스핀 완화시간 T₂를 관측했다. 상온에서 T₂의 감소는 결정 내의 reorientation motion과 관련이 있을 것으로 보인다. Upper and lower resonance frequencies, nuclear quadrupole coupling constants, asymmetry parameters, spin-spin relaxation time, average torsional frequency in the crystal lattice motion and moment of inertia in the oscillator are found for CO(NH₂)₂powder sample by using ??N Pulsed NQR(Nuclear Quadrupole Resonance) technique at 77K and room temperature. Temperature dependence of resonance frequencies showed frequency variation in agreement with the typical Bayer's theory in lattice motion. Resonance frequencies ν?? and ν?? at OK were obtained by fitting the high temperature approximation of Bayer-Kushida theory to the experimental data and spin-spin relaxation time (T₂) was observed at 77K and room temperature. Decrease of T₂at room temperature was explained by the effect of reorientational motion in the crystal lattice.

POSIX 쓰레드를 이용한 SR 실행 환경 지원에 관한 연구

이명준,박양수,정영필,김영곤 울산대학교 1995 공학연구논문집 Vol.26 No.1

병행성은 컴퓨터 시스템에서 주요한 추상화중의 하나이다. 이러한 병행성은 하드웨어의 디자인과 오퍼레이션, 운영체제, 다중프로세서, 분산계산, 실시간시스템, 프로그래밍 언어와 시스템의 디자인 수단으로 사용되어왔다. 운영체제 서비스에 대하여 응용 프로그램들의 원시코드 이식성을 제공하기 위하여 최근 몇년동안 운영체제에 대한 응용 프로그램 인터페이스를 위한 일련의 표준화 작업으로 IEEE의 운영 체제 기술 협의회는 POSIX를 개발해오고 있다. POSIX 쓰레드 확장에 관한 표준안은 운영체제 서비스가 하나의 프로세스내에서 제어의 다중 쓰레드를 생성하고 수행하는 것을 지원하는 응용 프로그램 인터페이스를 지원한다. 우리는 이러한 POSIX 쓰레드를 사용하여 SR 언어의 실행지원 시스템을 새로이 설계 및 구현한다. 개발된 실행지원 시스템의 이식성은 POIX 쓰레드를 지원하는 시스템들 사이에서 자연스럽게 보장된다. 주어진 컴퓨터 시스템에 대하여 이 새로운 실행지원 시스템의 성능은 그 시스템에서의 POSIX 쓰레드 자체의 구현에 대한 질에 좌우된다. 특히 그 시스템이 많은 프로세서를 가지고 이러한 프로세스들을 효과적으로 지원하도록 POSIX 쓰레드가 구현되었을때 이 새로운 실행지원 시스템은 매우 유용하게 된다. Concurrency is one of the key abstractions in Computer System. It has relevance to hardware design and operation, operating systems, multiprocessor and distributed computation, real-time systems, programming languages and system design methods. To provide source code portability of operating system services for application programs, POSIX is being developed for the recent several years by the IEEE Technical Committee on Operating System as a family of standards for application program interface to an operating system. The draft standard POSIX Threads Extension provides an application program interface to operating system services supporting the creation and execution of multiple threads of control within a single process. Using this POSIX Threads, we present a new design and implementation of the runtime support system of SR. Naturally, the portability of the runtime support system developed is guaranteed between the systems supporting POSIX Threads. For a given system, the performance of the new runtime support system depends on the quality of the implementation of POSIX Threads for the system. In particular, when the system has a lot of processors and the implementation of POSIX Threads utilizes those processors effectively, the new runtime support system is very useful.

생략 가능한 특수 터미날 심볼의 오류보정

이명준,박양수,정영필 울산대학교 1993 공학연구논문집 Vol.24 No.2

본 논문에서는 프로그램 작성시 주어진 투수 터미널 심볼의 생략 가능성을 분류하기 위한 형식론을 제안한다. 제안된 방법을 만족하는 문법의 경우, 생략된 심볼의 어휘 분석단계(lexical analysis phase)나 구문분석단계(syntax analysis phase)와 같은 컴파일하는 각 단계에서 보정할 수 있게 한다. 그리고, 제시된 방법에 근거하여, 각 컴파일 단계에서 복구할 수 있는 심볼이 포함된 프로그래밍 언어들의 특성을 논의한다. 또한, 제안된 방법론을 실제 구현하였으며 Ada나 Modula-2와 같은 주요 프로그래밍 언어들에 적용하였다. 이들 언어들에 대해서는 심볼을 생략함으로써 야기되는 오류를 만족할만하게 보정해 준다. 제안된 방법을 적용하기 어려운 프로그래밍 언어들에 대한 특성 또한 논의되었다. This paper presents a formalism for classifying the possibility of omitting a given special terminal symbol when writing programs. For the grammars satisfying the proposed formalism, the formalism enables to repair the symbol during phases of compilation such as lexical analysis or syntax analysis. Based on the method, this paper also discusses the characteristics of programming languages in which the symbol is repaired during such phases. The method was implemented and applied to major programming languages such as Ada and Modula-2, repairing satisfactorily the errors caused by omitting the symbol. In addition, the characteristics of the programming languages to which the presented method is hardly applicable, are discussed.