• Title/Summary/Keyword: Restrained effect

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FEM Analysis on the PD-3 Tunnel Section (유한 요소법에 의한 터널해석(사례문제 2))

  • Kim, Gyo-Won;Eom, Gi-Yeong;Lee, Jae-Seong
    • Proceedings of the Korean Geotechical Society Conference
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    • 1991.10a
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    • pp.108-122
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    • 1991
  • For the tunnel pattern of PD-3, a numerical analysis using the FEM program, MrSoil, was conducted with given geotechnical properties of surrounding rockmasses to verify the analysis results by comparing with other programs. The analyzed domain was extended to the far enough distance from the excavation surface to avoid the restrained effect by the boundary condition, and the construction sequence was employed in the analysis as calculation steps to simulate the time dependent 3 dimentional behavior of surrounding ground due to tunneling. Maximum 35 mm of the tunnel crown settlement and about 13 mm of the surface settlement were computed and the amount of settlement may not give any structural damage on the concrete structures on the ground surface. The shotcrete stress of 84 kg/cm2 and the rockbolt axial force of 9 ton as a maximum are within the allowable limit. The plastic zone was restricted near the excavation surface, but forepoling around the crown may be required to prevent rock falling. It is believed that the tunnel is designed reasonablely from the economical and safety points of view.

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A Review of the Modified Constraint Induced Movement Therapy in Stroke Patients (뇌졸중 환자에게 적용된 수정된 강제유도 운동치료에 대한 고찰)

  • Lee, Jong-Min
    • Therapeutic Science for Rehabilitation
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    • v.2 no.2
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    • pp.5-20
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    • 2013
  • Constraint Induced Movement Therapy(CIMT) is intense in that patient's unaffected arm is restrained for 90% of waking hours during a two-week period while they also participate in activity sessions using the affected arm for 6 hours/day. However CIMT showed that an issue for applying it to clinics of patients with stroke, and then modified constraint induced movement therapy(mCIMT) was designed to minimize the issue. Application on mCIMT for the patients has been studied in various ways. As a result, it has proved the effect on functional improvement of patients with stroke through methods such as MAL, FMA, WMFT, ARAT, FIM, SIS and so forth. It's considered that modified constraint induced movement therapy can be useful applied on clinical experiments of occupational therapy, as it is a way of treatment of upper extremity function, activities of daily living and an improvement of the quality of life for stroke patients.

Condensation and coagulation of metallic species with fly ash particles in a waste incinerator (폐기물 소각시 생성되는 유해 중금속물질과 연소실내 비산재와의 응축, 응집 현상에 대한 연구)

  • Yu, Ju-Hyeon;Hwang, Jeong-Ho
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.2
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    • pp.264-274
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    • 1997
  • A numerical analysis on condensation and coagulation of the metallic species with fly ash particles pre-existing in an incinerator was performed. Waste was simplified as a mixture of methane, chlorine, and small amounts of Pb and Sn. Vapor-phase amounts of Pb- and Sn -compounds were first calculated assuming a thermodynamic equilibrium state. Then theories on vapor-to-particle conversion, vapor condensation onto the fly ash particles, and particle-particle interaction were examined and incorporated into equations of aerosol dynamics and vapor continuity. It was assumed that the particles followed a log-normal size distribution and thus a moment model was developed in order to predict the particle concentration and the particle size distribution simultaneously. Distributions of metallic vapor concentration (or vapor pressure) were also obtained. Temperature drop rate of combustion gas, fly ash concentration and its size were selected as parameters influencing the discharged amount of metallic species. In general, the coagulation between the newly formed metal particles and the fly ash particles was much greater than that between the metal particles themselves or between the fly ash particles themselves. It was also found that the amount of metallic species discharged into the atmosphere was increased due to coagulation. While most of PbO vapors produced from the combustion were eliminated due to combined effect of condensation and coagulation, the highly volatile species, PbCl$_{2}$ and SnCl$_{4}$ vapors tended to discharge into the atmosphere without experiencing either the condensation or the coagulation. For Sn vapors the tendency was between that of PbO vapors and that of PbCl$_{2}$ or SnCl$_{4}$. To restrain the discharged amount of hazardous metallic species, the coagulation should be restrained, the number concentration and the size of pre-existing fly ash particles should be increased, and the temperature drop rate of combustion gas should be kept low.

An Experimental Study on the Durability Properties of Repair Mortar for Sewer Spread with Liquefied Antibiotic (액상 항균제를 도포한 하수시설용 단면복구재의 내구특성에 관한 실험적 연구)

  • Lee Dong-Heck;Jang Jae-bong;Na Chul-Sung;Cho Bong-Suk;Kim Jae-hwan;Kim Moo-Han
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2005.05a
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    • pp.211-214
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    • 2005
  • Recently, Deterioration of the concrete sewer concrete structures by biochemical corrosion has been issued and a development of the inhibition system of corrosion that has been demanded. The sulfuric acid may react with the hardened cement paste and originate expansive products which can induce swelling and breakless of concrete. Also, a sulphuric acid reacts with calcium hydroxide to from $CaSO_4\;\cdot\;2H_2O$. This reaction accounts for consumption of the calcium hydroxide present in hardened cement paste. In this study, To present from biochemical corrosion of the sewer repair mortar that was spread with liquefied antibiotic and then its experimental properties were experimentally investigated and to estimate the effect of absorbed condition of restorative mortar, the number of coating times and coating contents with antibiotic on the durability properties of restorative mortar spread with antibiotics. Also, testing items such as carbonation depth, choloride ion penetration depth and chemical resistance was tested to estimate the durability properties in third study. In results, the novellus bacillus inhabiting in sewer concrete structures was restrained by antibiotics developed in this study. And carbonation depth, choloride ion penetration depth and chemical resistance of restorative mortar spread with antibiotics was superior to that of plain mortar.

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A Development of Wrist type Monitoring System for Smart Home Healthcare (스마트홈의 헬스케어를 위한 손목형 생체신호 감시 장치 개발)

  • Lee, Gun-Ki;Lee, Ju-Won;Jeong, Won-Geun;Lee, Han-Wook;Jang, Jun-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.12
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    • pp.2349-2354
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    • 2006
  • Due to technological developments and the joint effect of both new social and economic needs and constraints, telemedicine is expanding rapidly through a variety of applications. Especially, owing to the rapid aging of society and increasing the wish for well being life, we take interest in health care services for people with special needs who wish to remain independent and living in their own home. We have focused on tole-monitoring to real-time medical signal and environment factor which is an influence on medical signal. We monitor the six signal(medical signal and environment factor), and transmit that signal to computer on bluetooth network. We get the information after using the some digital signal processing system, and display that information on the real-time monitoring system. We developed the measurer as portable type in older to non-restrained monitor.

A Study on Overabundant Qi And Retaliating Qi Of Five Circuits And Six Qi (운기(運氣)의 승복(勝復)에 관한 연구(硏究))

  • Yun, Chang-yeol
    • Journal of Korean Medical classics
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    • v.31 no.1
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    • pp.79-93
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    • 2018
  • Objectives : The climate changes in the natural realm displays pheonomena of excess and deficiency due to the principle of Yiyinyiyangzhiweidao. Here, overabundant qi arises due to the works of multiplication and insultation. When this overabundant qi is in force, the retaliating qi appears without fail to create a parallel. This is the Autonomous Equilibrium Mechanism found in the natural world. Studying this mechanism is deeply significant in understanding the mechanisms of diseases. Methods : The paper is written by reviewing the texts found in Huangdineijing's Chapters of Yunqi, which are $Q{\grave{i}}jiaobiandalun$, Wuchangzhengdalun, $Liuyuanzhengj{\grave{i}}dalun$, Zhizhenyaodalun, and Suwenliuqixuanzhumiyu. Results & Conclusions : The overabundance and retaliation in Five Circuits take the form of the restrained child of the Five Circuits takes revenge on the overabundant qi on behalf of his mother. The overabundance and retaliation in Six Qi take the form of rapid healing of Benqi which was in stagnation. Traditionally, overabundant qi is the only one in existence when the Five Circuits are in excess and the year of Hai yin wu wei you xu's regular transformation. During this time, retaliating qi does not exist. When Five Circuits are in deficiency and in the year of Si shen zi chou mao chen's pattern transformation, both the overabundant and deficiency qis exist. However, regardless of regular transformation or pattern transformation, overabundant qi and retaliating qi cannot exist at the same time. This seems to be the rational conclusion. There are some regulations that overabundance and retaliation follow. First, the strong and weak, and number of days coincide. Second, overabundance qi appear during the first half of the period when the qi of controling heaven is in place. During the later half of the period when the qi of terrestrial effect is in force, retaliation qi is the one that appears. Third, overabundance and retaliation does not end with one time. Rather, they will continue to repeat appearance and disappearance without any set pattern. Fourth, the overabundance and retaliation of the guest qi and dominant qi only has overabundance and no retaliation.

Free Vibration Analysis of Thin-walled Curved Beams with Unsymmetric Cross-section (비대칭 단면을 갖는 박벽 곡선보의 자유진동 해석)

  • 김문영
    • Journal of the Earthquake Engineering Society of Korea
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    • v.3 no.1
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    • pp.41-54
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    • 1999
  • For free vibration of non-symmetric thin-walled circular arches including restrained warping effect, the elastic strain and kinetic energy is derived by introducing displacement fields of circular arches in which all displacement parameters are defined at the centroid axis. The cubic Hermitian polynomials are utilized as shape functions for development of the curved thin-walled beam element having eight degrees of freedom. Analytical solution for in-plane free vibration behaviors of simply supported thin-walled curved beams with monosymmetric cross-sections is newly derived. Also, a finite element formulation using two noded curved beams element is presented by evaluating elastic stiffness and mass matrices. In order to illustrate the accuracy and practical usefulness of this study, analytical and numerical solutions for free vibration of circular arches are presented and compared with solutions analyzed by the straight beam element and the ABAQUS's shell element.

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Dynamic Deformation Characteristics of Fiber Reinforced Soils (섬유혼합토의 동적물성변형특성)

  • Jung, Sung-Yong;Kim, Dae-Il;Park, Chul-Soo;Mok, Young-Jin
    • Proceedings of the Korean Geotechical Society Conference
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    • 2004.03b
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    • pp.968-976
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    • 2004
  • In the paper, deformation characteristics of fiber-mixed-soils, mixed polypropylene staple fibers of 0.3% fiber content with sands of various gradation, and their effectiveness of reinforcement were evaluated. A series of Resonant Column tests were performed with specimens prepared with varying Uniformity Coefficient and constant Curvature Coefficient. Maximum shear moduli 01 fiber-mixed-soils were increased by up to 30% and modulus reduction was also restrained in nonlinear range. Normalized shear modulus reduction curves of fiber-mixed-soils shift close to the upper limit of Seed curd Idriss's curves and are located within narrower band than those of unmixed soils, which proves the effectiveness on stiffness increment by reinforcing soils with fibers.

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A Study on Voluptuous Beauty of Females Found in Music Videos by Popular Music Genre (대중음악 장르별 뮤직비디오 의상에 나타난 여성 관능미에 관한 연구)

  • Seo, Eun-Hee;Choi, Jeong-Wook
    • Journal of the Korean Society of Costume
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    • v.59 no.2
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    • pp.154-168
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    • 2009
  • This study aims on providing a design technique that expresses aesthetical elements by arranging the analysis of sensual beauty into detailed elements of design from music video outfits by genre of pop music, by observing music videos of female vocalists chosen from each genre of pop music focusing on their fashion. The results of this study are the following. 1. In the genre rock, the sensual beauty of female were expressed with a boyish and neutral style using texture such as leather or denim, and such style had the effect of emphasizing their feminine side even more. 2. In the genre dance music, exposure is extensive compared to other genre using sexy or lingerie look, and I found an ambivalent style of feminism with clothes in the form of drapery using textures such as chiffon and silk, and femme fatale style with textures adhering to the body such as leggings, leotard, and bodysuit. 3. In the genre of rap and hip-hop, clothes from casual and costume-play style were found using training jersey, t-shirt, and denim pants, and emphasized the sensual beauty of women by showing a silhouette with short length and fitting style using shiny textures. 4. In the genre of R&B, there were diverse outfits that suits the characteristics of characters appearing in the stories, or the situation of the story since there are many dramatic representation in the form of story Especially in case of female characters, the feminine side was emphasized staging a feminine style by wearing dresses with the texture of chiffon and silk. Exposure was restrained compared to other genre.

Production of Ubiquinone 10 from the Callus Culture of Tabacco(Nicotiana tabacum cv Xanthi) (연초(Nicotiana tabacum cv Xanthi) 세포배양에 의한 Ubiquinone 10의 생산)

  • 양덕춘;박지창;최광태
    • Korean Journal of Plant Tissue Culture
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    • v.21 no.6
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    • pp.341-345
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    • 1994
  • The effect of phytohormones on in vitro production of ubiquinone 10 from the callus cultures of Nicotiana tabacum cv Xanthi was investigated. The growth of callus cultures of Xanthi was in proved by addition of NAA and 2,4-D, especially NAA 0.5 mg/L alone, at the light condition. Ubiquinone 10 was detected by HPLC, and confirmed from Xanthi callus cultured on the all of uppermedia. The ubiquinone 10 content in Xanthi tobacco callus cultured on the medium with NAA 0.5 mg/L only was higher than that of other mixed medium with NAA and 2,4-D. However addition of IBA 1 mg/L and NAA 0.5 mg/L to the medium was more effective in promoting ubiquinone 10 formation than that of NAA 0.5 mg/L only As the callus growth of Xanthi was considerabley restrained at concentration of kinetin, Content and production of ubiquinone low as the highest at kinetin 0.5mg/L and 2,4-D 0.5mg/L in the light.

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