축산물이용 1 ; 계육의 가공특성에 관한 연구 1 Broiler 의 퇴육 및 흉육의 가공특성

박형기,한승관 한국동물자원과학회 ( 구 한국축산학회 ) 1993 한국축산학회 심포지움자료집 Vol.- No.-

構造解析用 프로그램 STARDYNE의 紹介

朴滎基(박형기) 대한토목학회 1980 대한토목학회지 Vol.28 No.4

지반-구조물 연계모델의 등가감쇠값에 관한 연구

박형기,Park, Hyung Ghee 대한토목학회 1987 대한토목학회논문집 Vol.7 No.3

지반-구조물 상호작용 효과가 큰 경우의 동적문제를 모드중첩법으로 해결하기 위하여 여러 가지 등가모드감쇠값 결정 방법에 대한 이론적 배경을 검토하였다. 또한 component mode synthesis method에 의하여 감쇠행렬을 구하고 이를 이용한 직접적분법으로 지반-구조물의 연계모델의 응답을 계산하여 각 등가모드감쇠값 결정 방법으로 구한 등가모드감쇠값을 사용한 모드 중첩법의 해석 결과와 비교 분석하였다. 해석모델로는 2종류의 상부구조와 4종류의 지반조건을 고려하고 이를 조합한 경우를 채택하였다. 본 연구 결과로 소멸에너지법으로 얻은 등가모드감쇠값이 직접적 분법의 결과에 가장 근사적인 결과를 주는 것을 알 수 있었다. 고정지반모델인 경우에는 강도가중법을 제외한 다른 방법으로 구한 등가모드감쇠값은 직접적분법의 결과와 거의 일치되는 응답을 주었다. The theoretical backgrounds of the several methods were surveyed and reviewed to fin out the adequate one to determine equivalent modal damping values in solving the dynamic problem of soil-structure interaction by mode superposition method. Furthermore the rigorous damping matrix of equation of motion was obtained through component mode synthesis technique and used in direct integration of the equation. The analytical results by direct integration method were compared with those of mode superposition approach using the various sets of equivalent modal damping values calculated by the methods to be reviewed. Two types of superstructures and four kinds of subsurface conditions were considered and combined to make soil-structure coupled models. It was realized that dissipating energy method gives the equivalent modal damping values which lead the most similar results to direct integration ones. In case of fixed base, the responses of all methods except stiffness weighted approach are almost equal to those of direct integration method.

돼지고기는 장수식품

박형기,Park, Hyeong-Gi 대한양돈협회 1990 養豚 Vol.12 No.1

Mitochondrial Myopathy 환자에서 과제지향적 상지운동과 탄성밴드를 이용한 기능적 근력증진 프로그램이 상지근력과 일상생활활동에 미치는 영향 -단일사례연구-

박형기,이강성,Park, Hyung-Ki,Lee, Kang-Sung 대한고유수용성신경근촉진법학회 2010 PNF and Movement Vol.8 No.1

Purpose : The purpose of this study was to the effect of task-oriented arm movements and muscle enhancement program using elastic bands on limb muscle strength and activities of daily living of mitochondrial myopathy patient. Method : Single-subject experimental research design was applied to. AB Design was adopted. The study period was approximately four weeks. A baseline period of the three sessions of the experiment, the treatment period B, 3 sessions were conducted. Baseline period to observe the patient's daily life bardel index was measured as an independent feature, MMT as a limb muscle strength was assessed by measuring early. During the period of treatment with serabaendeu limb strength training 30 minutes after the break five minutes after the treatment using MMT limb muscle strength were evaluated. Task-oriented exercise program, and who exercise a week as a treatment was carried out in 30 minutes. Result : All of the scores for each sessional period of treatment when compared to base line and upper limb muscle strengthening exercises on the subjects that did not change significantly. Conclusion : If the muscles and nervous system involvement in patients with symptoms such as muscle weakness and paralysis of upper extremity functional use is difficult.

현수교 PWS 및 CFRC 행어로프의 내풍안정성 실험 평가

박형기,강선진,Park, Hyung-Ghee,Kang, Seon-Jin 한국방재학회 2008 한국방재학회논문집 Vol.8 No.6

In this study, to evaluate the aerodynamic stability of suspension bridge hanger ropes, the wind tunnel tests are carried out. It is found that the vortex induced vibration is detected only in single PE-coated PWS cable case. And the wake galloping is occurred in twin cables spaced $3\sim6$ cable diameters of cable center to center when the incidence angle of wind is only zero degree. In case of other incidence angles of wind except zero degree, the wake galloping or the wake flutter are showed in twin cables even outside range of the bounds of $3\sim6$ cable diameters. CFRC cable shows very stable for the twin cables regardless of the distance between two cables, and also for various incidence angles of wind. Thus the characteristic of CFRC rope overwhelms one of PWS cable in aerodynamic stability. 이 연구에서는 현수교 PWS 및 CFRC 행어로프의 바람에 의한 내풍안정성 평가을 위한 풍동실험을 수행하였다. 풍동실험결과, PE관으로 피복된 PWS 케이블은 단일 케이블에서 와류진동이 발생하고 복수 케이블에서는 중심간격이 $3\sim6D$일때 웨이크갤로핑이 발생하였다. 진동이 발생하지 않는 복수 케이블에서도 풍향각이 달라지면 웨이크갤로핑이나 웨이크플러터가 발생함을 알 수 있었다. CFRC 케이블은 케이블 중심간격 및 풍향각에 관계없이 PWS 케이블에 비해 안정된 내풍성능을 보였다.

차량재하시험에 의한 구조물 동특성 평가에 웨이블렛변환의 이용

박형기 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 논문집 Vol.9 No.2

도계의 전기실신 조건이 육계 흥육의 품질에 미치는 영향

박형기,양명호 한국축산학회 2000 한국축산학회지 Vol.42 No.1

This study was conducted to investigate the effect of electrical stunnings on bleeding rate and quality of broiler breast meat during slaughtering. Sixty broiler chicks were stunned by 0, 40 and 63 voltage with the same electrical frequency and stunning time at Halim Co. LTD. Total bleeding rate(%), bleeding rate(for the first 30 seconds) and bleeding time were recorded. Carotid or jugular veins of five broilers were manually cut and deboned in each treatment. The color value, pH, water holding capacity(WHC) and VBN were measured at 0, 2 and 3 days after storage at 4±1℃. Chicks treated with 65V, 255㎐, 15s showed the highest total bleeding rate(3.89±0.06%) and bleeding rate after 30s(79.84±0.80%) of all treatments. Lightness(L-value) and yellowness(b-value) of the color value were also significantly higher under the slaughtering of 65V, 255㎐, 15s than those of other treatments(P$lt;0.05). In contrast, redness(a-value) was the highest in non-stunning groups. After 3 days storage, pH and WHC of breast meat treated with 65V, 255㎐, 15s was higher than those of other treatments, whereas VBN was significantly lower compared to that of other treatments(P$lt;0.05). The results of this experiment confirmed that broiler chicks treated with 65V, 255㎐, 15s maximized bleeding rate and indicated that most blood was removed at the beginning of bleeding. The breast meat of this treatment also exhibited highest lightness(L-value) and yellowness(b-value) of color value. Thus, bleeding rate would be related with bleeding time, color value, pH, WHC and VBN.

폴리우레탄 스프링 복원형 디스크 받침의 동적거동에 대한 실험 및 해석적 연구

박형기,이유인,정대유 한국지진공학회 2011 한국지진공학회논문집 Vol.15 No.2

이 논문에서는 근래에 널리 사용되는 면진 장치인 폴리우레탄 스프링 복원형 디스크 받침의 동적거동에 영향을 미치는 구성재료의 인자에 대한 분석을 수행한 후, 그 결과를 이용하여 받침의 거동을 예측하여 거동 시험결과와 비교하였다. 여기서 동적거동에 영향을 미치는 인자로는 속도와 접촉압력에 따라 변하는 불소수지판(PTFE, PolyTetraFluoroEthylene, 폴리테트라플루오로에틸렌)의 마찰계수와 변형률에 따라 변화하는 폴리우레탄 스프링의 탄성계수가 고려되었다. 불소수지판은 W-PTFE virgin 제품을 사용하였고, 폴리우레탄 스프링은 직접 제작한 것을 사용하였다. 접촉압력, 속도에 따른 마찰계수 변화와 변형률에 따라 변하는 폴리우레탄 스프링의 탄성계수를 모사하는 식은 각각의 시험결과로부터 역추정 하여 사용하였다. 동특성 영향인자를 고려한 거동의 예측 결과는 동특성이 고려되지 않고 정적 인자만을 고려한 예측 결과보다 시험결과와 더 적절한 일치성을 보여주었다. In this paper, the factors affecting the dynamic characteristics of a polyurethane spring restoring disk bearing are analysed to predict the dynamic behavior of the bearing. The prediction results and the test results are compared. The Young's modulus of the polyurethane spring, which varies according to strain of spring and the friction coefficient, of PTFE (PolyTetraFluoroEthylene), which varies according to the velocity and pressure of PTFE, are considered as the factors influencing the dynamic characteristics. W-PTFE virgin products are used and polyurethane springs are produced for the tests. The equation related to changing the friction coefficient and the modulus of elasticity are obtained through an inverse estimation of the test results. The estimation results, considering the factors affecting the dynamic characteristics, simulate the test results more appropriately than the estimation without the consideration of those factors.

Fe-3%Si 강의 비정상 입자성장 시의 미세조직 특징 (초)

박형기,황농문,고경준,이동권 대한금속재료학회 ( 구 대한금속학회 ) 2007 대한금속재료학회 학술대회 개요집 Vol.2007 No.1