• Title/Summary/Keyword: fundamental period

Search Result 703, Processing Time 0.025 seconds

Development of Functional Misutkaru Drink Added with Several Medicinal Herbs Extracts (약용식물추출물을 첨가한 건강미숫가루음료 개발)

  • 이가순;이진일;이종국;이종수;박원종
    • Food Science and Preservation
    • /
    • v.11 no.2
    • /
    • pp.154-159
    • /
    • 2004
  • In order to develop of health-oriented convenience foods for rice consumption, functional Misutkaru drink was made by adding several medicinal herbs extracts to fundamental Misutkaru based cereal powder(rice, barley and soybean). Fundamental Misutkaru drink was prepared with the ratio of cereal mixed rice(5g), barley(5g) and soybean(5g) on water (100 mL) and several medicinal herbs extracts. Liriopis Tuber(50%), Omija(15%), Ginseng(10%) and Jujube(25%) were mixed to fundamental Misutkaru as functional Misutkaru. And then it was extracted to added water of 10times during 36hrs at 75$^{\circ}C$. For instant Misutkaru drink of health-oriented convenience foods, mixture of them was made with fundamental Misutkaru drink(80%), extract of several medicinal herbs(20%), and it's sensory score was high. Autoclaved functional Misutkaru drink for long storage period was changed rheological type badly. Overall acceptability and storage period of nonautoclaved functional Misutkaru drink to added extract of several medicinal herbs was higher than fundamental Misutkaru drink.

Effects of Integrated Movement on Children's Fundamental and Expressive Movement Ability in All-day Kindergarten (통합적 동작활동이 종일제 유아의 기본운동능력 및 신체표현능력에 미치는 영향)

  • Jung, Se Ho;Ohm, Jung Ae
    • Korean Journal of Child Studies
    • /
    • v.23 no.5
    • /
    • pp.153-166
    • /
    • 2002
  • This study investigated the effectiveness of integrated movement on children's fundamental and expressive movement ability in all-day kindergarten. Subjects were 52 children in 2 all-day kindergartens in Daejeon. The Subjects were divided into an experimental and a control group. Integrated movement activities were applied in the experimental group for 7 weeks. Integrated movement activities were focused on the life theme according to the annual and weekly education plan and were composed by integrating both the basic area and the application area of movement. At the end of the training period, differences were found in fundamental and expressive movement ability between the experimental and the control groups.

  • PDF

Effect of seismic pounding on buildings isolated by triple friction pendulum bearing

  • Amiri, Gholamreza Ghodrati;Shakouri, Ayoub;Veismoradi, Sajad;Namiranian, Pejman
    • Earthquakes and Structures
    • /
    • v.12 no.1
    • /
    • pp.35-45
    • /
    • 2017
  • The current paper investigates the effect of the seismic pounding of neighboring buildings on the response of structures isolated by Triple Friction Pendulum Bearing (TFPB). To this end, a symmetric three-dimensional single story building is modeled for analysis with two specified levels of top deck and base deck, to capture the seismic response of the base isolators and building's roof. Linear elastic springs with different level of gaps are employed to calculate the impact between the buildings. Nonlinear Dynamic Time History Analyses (NDTHA) are conducted for seismic evaluation. Also, five different sizes with four different sets of friction coefficients are assumed for base isolators to cover a whole range of base isolation systems with various geometry configurations and fundamental period. The results are investigated in terms of base shear, buildings' drift and top deck acceleration of the superstructure. The results also indicate the profound effect of the stiffness of the adjacent buildings on the value of the impact they impose to the superstructure. Also, in situations of potential pounding, the increment of the fundamental period of the TFPB base isolator could intensify the impact force up to nearly five-fold.

Aesthetics of Underwear (속옷미학)

  • 이상례
    • Journal of the Korean Society of Costume
    • /
    • v.52 no.1
    • /
    • pp.159-173
    • /
    • 2002
  • The subject of the paper is for the study about the implication and the changes of design and functions in the underwear by the change of the times from late 19c until present time. Researching on documents and magazine's articles, and interviewing with women older than 60s is used for the period of previous 1960s. researching on documents, advertising, newspaper, and interviewing with the persons concerned is used for the period of after 1960s. Analysis showed periodical change in underwear is divided into that the changes of the time is divided into 1890-1950 start to Westernization in underwear, 1957-1969 Ready made in underwear. 1950-1969 Variety in underwear, 1980-1989 Fashioning, functioning in underwear, 1990-present Withdrawing from fundamental notion in underwear. The time of 1890-l950 showed the biggest change in an external form in underwear. In 1950-1969, notions of beauty in underwear ultimately swatch from Oriental sense to Western sense, In 70s, underwear achieved the early stage of fashioning. In 80s, Underwear became one of fashion item. In 90s, underwear achieved higher quality and variety. The basic notion of underwear was destroyed by exposing underwear.

Seismic behavior of concrete gravity dams

  • Varughese, Jiji Anna;Nikithan, Sreelakshmi
    • Advances in Computational Design
    • /
    • v.1 no.2
    • /
    • pp.195-206
    • /
    • 2016
  • Dams play a vital role in the development and sustainment in a country. Failure of dams leads to the catastrophic event with sudden release of water and is of great concern. Hence earthquake-resistant design of dams is of prime importance. The present study involves static, modal and transient analyses of dam-reservoir-foundation system using finite element software ANSYS 15. The dam and the foundation are modeled with 2D plane strain element "PLANE 42" and the reservoir by fluid acoustic element "FLUID 29" with proper consideration of fluid-structure interaction. An expression for the fundamental period of concrete dams is developed based on modal analysis. Seismic response of gravity dams subjected to earthquake acceleration is evaluated in terms of peak displacement and stress.

Seismic spectral acceleration assessment of masonry in-filled reinforced concrete buildings by a coefficient-based method

  • Su, R.K.L.;Lee, C.L.;Wang, Y.P.
    • Structural Engineering and Mechanics
    • /
    • v.41 no.4
    • /
    • pp.479-494
    • /
    • 2012
  • This study explores a coefficient-based seismic capacity assessment method with a special emphasis on low-rise masonry in-filled (MI) reinforced concrete (RC) buildings subjected to earthquake motion. The coefficient-based method without requiring any complicated finite element analysis is a simplified procedure to assess the maximum spectral acceleration capacity of buildings. This paper first compares the fundamental periods of MI RC structures obtained, respectively, from experimental period data and empirical period-height formulas. The coefficient-based method for low-rise masonry buildings is then calibrated by the published experimental results obtained from shaking table tests. The comparison of the experimental and estimated results indicates that the simplified coefficient-based method can provide good approximations of the maximum spectral accelerations at peak loads of the low-rise masonry reinforced concrete buildings if a proper set of drift factors and initial fundamental vibration periods of structures are used.

A Simple Technique to Predict the Natural Frequencies of the Sagged Cable Structures (케이블구조물의 고유진동수 추정을 위한 근사식)

  • Sang-Moo,Lee;Yong-Chul,Kim
    • Bulletin of the Society of Naval Architects of Korea
    • /
    • v.23 no.3
    • /
    • pp.10-16
    • /
    • 1986
  • This paper deals with a simple, approximate formula to predict the natural frequencies of the sagged cable structures. Assuming that the propagation velocity of the lateral wave is dependent only on the local mass per unit length and local tension, the explicit simple formula to predict the fundamental period is newly derived. The modified form of these formula is also presented for the prediction of the fundamental period of general shaped cable structures. The results of comparison shows fairly good agreements with experimental results and with theoretical ones. This formula is also used to predict the natural frequencies of a long vertical cable and the derived approximate formula in that case, becomes identical to the exact solution.

  • PDF

the height-wise distribution of lateral seismic forces considering the contribution of the higher modes (고차모드 효과를 고려한 층 지진하중 분배)

  • 황준호
    • Proceedings of the Earthquake Engineering Society of Korea Conference
    • /
    • 1999.10a
    • /
    • pp.273-280
    • /
    • 1999
  • The base shear and the veritcal distribution of shears along the height of a building are two fundamental measures that define the design seismic load. But the method specified in Korean building code does not give an appropriate distribution for buildings of tall or longer period because it roughly account for the contributions of the higher modes. several methods to give a better distribution of seismic forces have been proposed. But they have not been introduced into the seismic codes yet probably because they cannot solve all the above-mentioned problems. This paper deals with the distribution of lateral seismic forces along the height of a building to account for the contribution of the higher modes. After reviewing some existing distributions in seismic codes and literatures moment-resisting frames with various stories were studied by modal analysis for a wide range of fundamental period and the stiffness ratio of the buiding. As a result of the analysis a new expression for the distribution of seismic forces is proposed and compared with those of some codes and dynamic analysis.

  • PDF

An analytical model for displacement response spectrum considering the soil-resonance effect

  • Zhang, Haizhong;Zhao, Yan-Gang
    • Earthquakes and Structures
    • /
    • v.22 no.4
    • /
    • pp.373-386
    • /
    • 2022
  • The development of performance-based design methodologies requires a reasonable definition of a displacement-response spectrum. Although ground motions are known to be significantly affected by the resonant-like amplification behavior caused by multiple wave reflections within the surface soil, such a soil-resonance effect is seldom explicitly considered in current-displacement spectral models. In this study, an analytical approach is developed for the construction of displacement-response spectra by considering the soil-resonance effect. For this purpose, a simple and rational equation is proposed for the response spectral ratio at the site fundamental period (SRTg) to represent the soil-resonance effect based on wave multiple reflection theory. In addition, a bilinear model is adopted to construct the soil displacement-response spectra. The proposed model is verified by comparing its results with those obtained from actual observations and SHAKE analyses. The results show that the proposed model can lead to very good estimations of SRTg for harmonic incident seismic waves and lead to reasonable estimations of SRTg and soil displacement-response spectra for earthquakes with a relatively large magnitude, which are generally considered for seismic design, particularly in high-seismicity regions.

Soil-structure interaction effects on the seismic response of multistory frame structure

  • Botic, Amina;Hadzalic, Emina;Balic, Anis
    • Coupled systems mechanics
    • /
    • v.11 no.5
    • /
    • pp.373-387
    • /
    • 2022
  • In this paper,soil-structure interaction effects on the seismic response of multistory frame structure on raft foundation are numerically analyzed. The foundation soil profile is assumed to consists of a clay layer of variable thicknessresting on bedrock. Amodified plane-strain numerical model isformed in the software Plaxis, and both free vibration analysis, and earthquake analysis for a selected ground motion accelerogram are performed. The behavior of the structure is assumed to be linear elastic with Rayleigh viscous damping included. The behavior of the clay layer is modeled with a Hardening soil model with small strain stiffness. The computed results in terms of fundamental period and structural horizontal displacementsfor the case of fixed base and for different thicknesses of clay layer are presented, compared, and discussed.