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반려견의 미용 시 스트레스에 의한 활력징후 및 혈청 코티졸의 변화
정한아(Han-A Jeong),김충희(Chung-Hui Kim) 한국동물보건학회 2023 한국동물보건학회지 Vol.2 No.1
The present study purposed to investigate the degree of stress on companion dogs after grooming service. For this purpose, we analyzed the effect of skin service on changes in the concentration of serum cortisol, the body weight, body temperature, heart rate and skin lesions, and obtained results as follows. Compared to the control group or the ordinary grooming group, the stress grooming group showed high concentration of serum cortisol, and their recovery was slow but they were recovered to the normal state in 24 hours. Body temperature increased in the ordinary grooming group and the stress grooming group compared to the control group. Body temperature after 4 hours from grooming service was lower than that just after the service, and the temperature before the grooming service was restored in 24 hours from the grooming service. The results of this experiment showed that grooming service to pet dogs causes stress and increases the rise of body temperature, heart rate and the concentration of serum cortisol. However, these symptoms disappeared within 24 hours from the experiment, and skin inflammation was observed in a dog but not serious.
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정병주(Jeong Byung-Joo),홍갑표(Hong Kap-Pyo),정한(Jeong Han) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.5
Mechanical connections are defined as those where fasteners penetrate the wood; adhesive connections are not included. Mechanical connections are constructed using two general fastener types dowel and bearing. Dowel type fasteners, such as nails, screws, and bolts, biscuits, transmit either lateral or withdrawal loads. Lateral loads are transmitted by bearing stresses developed between the fastener and the members of the connection. The hanger-type connections are combination of dowel and bearing-type fasteners. Connection design is affected by many of the same factors that influence the strength properties of wood. In addition to the type, number, and size of fasteners, connections strength also depends on such factors as the wood species, direction and duration of load, and conditions of use. In this study wood tendon, steel tendon, steel biscuit connections are compared with each others through the experiment. Shear capacity and cyclic load resisting ability are examined in all connection types. For good fabrication metal connector should be used extensively in wood structure. Comer spring are made of thin angle plate and two torsion spring. They are available in reducing of lateral displacement. Comer springs will be also used in low-strength or nonstructural connections and resist lateral and withdrawal forces.
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