• 제목/요약/키워드: stability test

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안정적 반전, 내려치기 그리고 들어올리기를 통한 하부체간 심층근육 강화운동이 초기 편마비 환자의 균형에 미치는 영향 - 증례 보고 - (The effect of a balance on deep abdominal muscles in an acute hemiplegic patient through stabilizing reversal, chopping and lifting)

  • 전윤선;이승훈;구봉오
    • PNF and Movement
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    • 제7권4호
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    • pp.37-43
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    • 2009
  • Purpose : The purpose of this study was to evaluate the effect of core stability training at deep abdominal muscle for balance control of hemiplegic patient. Method : The subject of this study was a 47-year-old man with right hemiplegia. He was treated five times a week for three weeks with core stability training at deep abdominal muscles. Evaluation tool was used Functional reach test(FRT), timed up and go test(TUG) and one leg standing for stroke patients. Result : The FRT distance increase, TUG time decrease, one leg standing time increase core stability training at deep abdominal muscles for right hemiplegia improved was the ability for maintain balance. Posture and control of trunk stability are changing posture, and so which showed significant improve of total balance control. Conclusion : The result of this study showed that core stability training at deep abdominal muscles is an effective treatment for balance control. Therefore, it could be considered as a treatment method in the rehabilitation of stroke patient with poor postural control and imbalance, although further studies are needed.

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캡사이신 함유 나노에멀션으로 반죽한 생면의 품질특성과 저장안정성 (Quality Characteristics and Storage Stability of Wet Noodle based on Capsaicin-loaded Nanoemulsions)

  • 김민지;이수정
    • 한국식품영양학회지
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    • 제30권5호
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    • pp.960-972
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    • 2017
  • The objectives of this study was to investigate the properties and stability of the wet noodles added to nanoemulsion as a industrial model system, and in so doing, survey practical applicability in the food industry. In order to test out these objectives, the characteristics and stability of the wet noodles added to nanoemulsion were investigated and their cooking characteristics and capsaicinoids loss were examined. As a result, the test results showed that the findings indicated that the post-cooking loss of capsaicinoids in the wet noodles added to double-layer nanoemulsion covered with chitosan was less than the losses in the wet noodles added to any other noodles. More especially, this demonstrates that the noodle added to double-layer nanoemulsion covered with chitosan scored significantly higher than the others with reference to their cooking properties, color, texture, stability for storage stability, and sensory evaluation. These results show that the findings of this study demonstrated that the noodles added to nanoemulsions could be produced as a food-grade merchandise because they could provide enhanced encapsulation capacity of capsaicinoids and higher acceptability.

Effects of Kinesio Taping and Massage Application to Calf Muscle on Ankle Stability

  • Kim, Chan-Woo;Roh, Hyo-Lyun
    • 대한물리의학회지
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    • 제13권4호
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    • pp.35-42
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    • 2018
  • PURPOSE: This study was conducted to investigate the effects of Kinesio taping and massage application to the calf muscles on ankle stability. METHODS: The study subjects were 66 healthy adults (male: 32, female: 34) who had no instability in their ankles. Subjects were randomly assigned to a Kinesio taping group or a massage group. The research tool used the Y-balance test to measure instability of the ankle. The distance between the right and left foot was measured from the center in the anterior, posterior-medial, and posterior-lateral directions. Massage was applied to the calf muscles three times over two weeks and Kinesio tape was attached to the calf muscle and tibialis anterior for 10 hours twice during the experimental period. RESULTS: The results showed that application of Kinesio taping resulted in increases in the distance between the feet increased in some directions. After the massage, the distance extended from the anterior and posterior-lateral directions was prolonged, and the ankle stability on the right and left sides was partially improved by massage application. CONCLUSION: Kinesio taping and massage applied to the calf muscles are appropriate interventions for the improvement of ankle stability. Based on the application times of massage, Kinesio taping appears to work more effectively for ankle stability.

Wind Tunnel Test를 통한 Wind Moment의 적용 사례 (Application of Wind Heeling Moment with Wind Tunnel Test)

  • 김진호;이상열;박세일;김양수
    • 대한조선학회 특별논문집
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    • 대한조선학회 2015년도 특별논문집
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    • pp.74-78
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    • 2015
  • When floating platform or drilling unit is located at operating station during its design life, it has to have the sufficient stability considering external environment. To evaluate whether offshore structure is complied with the required design criteria for intact stability, the factors which decrease the righting moment have to be considered. Wind heeling moment is one of main factors because the direction is opposite to the righting moment. According to 2009 MODU CODE (Code for the construction and equipment of Mobile Offshore Drilling Units, 2009), wind heeling moment derived from wind tunnel test on scale model of offshore structure enables to apply as alternative given formula and method in 2009 MODU CODE. However, there is no the specific method for applying data derived from wind tunnel test. Based on the following reasons, this paper presents that the calculation method of wind heeling moment utilizing non-dimensional coefficient relative to wind loads (wind forces and moments) and the comparison with each method applying an example.

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식초 첨가량에 따른 마요네즈 드레싱의 유화 안정성 (The Effect of Vinegar Concentration the Emulsion Stability of Mayonnaise Dressing)

  • 양신철;한정열
    • 한국조리학회지
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    • 제8권3호
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    • pp.295-308
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    • 2002
  • The effect of vinegar concentration (+30%, 0% and -30%) on the emulsion stability of mayonnaise dressing was studied by the measurement of theological test and sensory evaluation. The emulsion stability of mayonnaise dressing increased with increase in vinegar concentration. The results of steady shear theological test indicated that C sample of the highest vinegar concentration (+30%) exhibited higher emulsion stability than other samples. The dynamic shear datas were similar to steady shear theological data. The mayonnaise dressing samples showed time dependence, which was quantitatively described by the Weltman model. Parameters A and B indicated that the structure of C sample exhibited more stable than that of A (-30%) and B (0%) samples. The amount of oil separation was less than that of A and B samples. The results of sensory evaluation were similar to those of theological and emulsion tests.

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A Novel Energy Storage System based on Flywheel for Improving Power System Stability

  • Wu, Jinbo;Wen, Jinyu;Sun, Haishun;Cheng, Shijie
    • Journal of Electrical Engineering and Technology
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    • 제6권4호
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    • pp.447-458
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    • 2011
  • In this paper, a novel flywheel energy storage device, called the flexible power conditioner, which integrates both the characteristics of the flywheel energy storage and the doubly-fed induction machine, is proposed to improve power system stability. A prototype is developed and its principle, composition, and design are described in detail. The control system is investigated and the operating characteristics are analyzed. The test results based on the prototype are presented and evaluated. The test results illustrate that the prototype meets the design requirement on power regulation and starting, and provides a cost-effective and effective means to improve power system stability.

깍은 사면체형 소파블록의 안정성 평가 (Investigation of Statbility of Truncated Tetrahedron Type Amore Block)

  • 조홍동;배우석;김명균;이호진
    • 한국안전학회지
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    • 제24권5호
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    • pp.43-47
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    • 2009
  • Armor block is used to reduce wave energy. To do this, the stability of coastal structure is enhanced. It is very expensive to develop a new type armor block. So, the research of new type armor block is very short. We develope truncated tetrahedron type armor block(new type block) which have a hole in center part. In this study, the stability of new type armor block is investigated by hydraulic model test. In the result, the stability coefficient($K_D$) of new type armor block is 11.8. this value is more superior than value of tetrapod.

모형시험과 유한요소해석에서 비탈면 강우의 침투량 비교 (Comparison of Infiltration Rate of Slope in Model Test and Finite Element Analysis)

  • 유용재;김재홍
    • 토지주택연구
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    • 제9권2호
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    • pp.51-57
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    • 2018
  • The causes of landslides are dependant on rainfall events and the soil characteristics of a slope. For the conventional slope stability, the slope stability analysis has been carried out assuming the saturated soil theory. But, in order to clearly explain a proper soil slope condition by rainfall, the research should be performed using the unsaturated soil mechanism suitable for a soil slope in the field. In the study, by using two major categories of soils in Korea, such as granite and gneiss weathered soils, landslide model test and finite element method have been compared with the difference of seepage and soil stability analysis. The hydraulic conductivity of gneiss weathered soil is slower than that of granite weathered soil, and the gneiss weathered soil contains much finer soils than the granite weathered soil. It was confirmed that the instability of the slope was progressing slowly due to the slow rate of volumetric water content of the surface layer.

고체추진 로켓모터에서의 선형 안정성 해석 (Linear stability analysis in a solid-propellant rocket motor)

  • 김경무;강경택
    • 대한기계학회논문집
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    • 제19권10호
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    • pp.2637-2646
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    • 1995
  • Combustion instability in solid-propellant rocket motors depends on the balance between acoustic energy gains and losses of the system. The objective of this paper is to demonstrate the capability of the program which predicts the standard longitudinal stability using acoustic modes based on linear stability analysis and T-burner test results of propellants. Commercial ANSYS 5.0A program can be used to calculate the acoustic characteristic of a rocket motor. The linear stability prediction was compared with the static firing test results of rocket motors.

EFP 관통자 특성과 비행 안정성에 대한 연구 (Research on the Penetrator Characteristics and Flight Stability of Explosively Formed Penetrator)

  • 이영선
    • 한국군사과학기술학회지
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    • 제23권4호
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    • pp.355-362
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    • 2020
  • EFP composed of explosive, charge and liner generally penetrates standoff a target by Monroe effect. Its performance highly depends on penetrator characteristics and flight stability. Penetration ability can be dramatically reduced when the penetrator reaches the target with AOA, even if the penetrator has high kinetic energy and L/D ratio. Therefore, it is important to research not only penetrator characteristics and but also flight stability. In this work, the effect of liner shape on penetrator characteristics was examined using free flight test and numerical tools. It was found that tip velocity of penetrator was increased with decreasing liner thickness. It was also found that thicker liner had higher static margin leading to better flight status.