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LCC 분석을 통한 도시가스와 지열 냉 난방설비의 경제성 평가
이일규(Lee, Il-Gyu),강현욱(Kang, Hyun-Wook),원유만(Won, Yoo-Man),김용수(Kim, Yong-Su) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.10
The purpose of this study is economic analysis of heating and cooling systems that are using gas, geothermal energy through life cycle cost analysis. The adapted research method selected the office building in Seoul region. The building is 15 stories and have total floor area of 270,000㎡. And the capacity of heating and cooling system applied in new building is 700RT to 750RT as a scale of heating and cooling system that can provide same capacity. The Adapted LCC Analysis period on 40 years. Comparing and analyzing life cycle cost about each heating and cooling system in cases, economical evaluation is estimated. The results are as follows: 1) The total life cycle cost of gas heating and cooling system is approximately 7,979million won, the total life cycle cost of geothermal heating and cooling system is approximately 8,073million won. 2) The cost of the geothermal heating and cooling system is higher than gas heating and cooling system about 1.18%. Thus, optimal plan is the gas heating and cooling system.
The Society of Physical Therapy Science 2014 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.26 No.3
<P> [Purpose] This study compared the forward head angle and the lumbar flexion and rotation angles of computer workers using routine and fixed computer workstations. [Subjects] Ten male workers voluntarily consented to participate in the study. [Methods] A 3-D motion analysis system was used to measure the angles of the forward head and lumbar flexion. All subjects performed computer work for 30 minutes using both types of workstation. [Results] When working at the fixed workstation, the forward head angle was less than that observed when the routine workstation was used. At the fixed workstation, the lumbar flexion and rotation angles were less than that at the routine workstation. [Conclusion] The computer workstation individually fixed for standard posture may have prevented poor sitting posture.</P>
The Society of Physical Therapy Science 2014 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.26 No.3
<P> [Purpose] This study examined the effects of a ball-backrest chair combined with an accelerometer on the pain and trunk muscle endurance of a computer worker with low-back pain (LBP). [Subject and Methods] A 36-year-old male with a flat back who complained of LBP at the L3–5 level was the subject. He used the ball-backrest chair when working at a computer for 1 week. [Results] After using the ball backrest, the trunk extensor and flexor muscle endurance times had increased compared with the baseline and the VAS score had decreased from 7 to 4. [Conclusion] Combining exercises with information on motion is a useful common treatment approach for improving trunk muscle endurance in LBP.</P>
The Society of Physical Therapy Science 2015 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.27 No.1
<P>[Purpose] We investigated the effects of individual strengthening exercises for the stabilization muscles on the nutation torque of the sacroiliac joint in a sedentary worker with nonspecific sacroiliac joint pain. [Subject] A 36-year-old female complained of pain in the sacroiliac joints. [Methods] The subject performed individual strengthening exercises for the stabilization muscles for nutation torque of the sacroiliac joint for 3 weeks. Pain-provocation tests and visual analog scale (VAS) scores were evaluated before and after the exercises. [Results] After performing the individual strengthening exercises for the erector spinae, rectus abdominis, and biceps femoris muscles for 3 weeks, the subject displayed no pain in the pain provocation tests, and the VAS score was 2/10. [Conclusion] The individual strengthening exercises for the stabilization muscles of the sacroiliac joint performed in the present study appear to be effective for sedentary workers with sacroiliac joint pain.</P>
The Society of Physical Therapy Science 2014 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.26 No.5
<P> [Purpose] This study assessed the use of different exercise speeds and isokinetic feedback on the middle and lower serratus anterior muscles during push-up exercises. [Subjects] Ten male workers voluntarily consented to participate in the study. [Methods] The subjects performed push-up exercises under three conditions. Surface electrodes were placed on the dominant right side of the middle and lower serratus anterior muscles. [Results] The middle and lower SA muscle activities under condition 2 were significantly decreased when compared with those under conditions 1 and 3. The middle SA activity under condition 3 was significantly increased when compared with that under condition 1. [Conclusion] This study suggests that proper selection of push-up exercise speed may be necessary for selective strengthening of the SA and that isokinetic feedback information obtained using an accelerator can help in selective strengthening of the middle SA.</P>
The Society of Physical Therapy Science 2013 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.25 No.7
<P> [Purpose] We developed a multi-air-cushion biofeedback device (MABD) to assist the dynamic hug exercise, and investigated the effects of MABD on the shoulder muscles during the dynamic hug exercise. [Subjects] Twelve males aged 22–32 years were recruited. [Methods] We measured the right side serratus anterior, lower trapezius, and upper trapezius muscle activities during the dynamic hug exercise with and without MABD. [Results] The serratus anterior and lower trapezius muscles activities significantly increased during the dynamic hug exercise with MABD compared to without it. The upper trapezius muscle significantly decreased during the dynamic hug exercise with MABD compared to without it. [Conclusion] The results suggest that the dynamic hug exercise with MABD is an effective scapular stability exercise.</P>
The Society of Physical Therapy Science 2013 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.25 No.8
<P> [Purpose] The purpose of this study was to compare the isolation ratios of scapular retraction muscles between protracted scapular and asymptomatic groups. [Subjects] Seven males with protracted scapular and seven asymptomatic males aged 20–30 years were recruited. [Methods] We measeured the rhomboid, middle trapezius (MT), and lower trapezius (LT) muscles activities, and calculated the isolation ratio. [Results] The rhomboid and MT isolation ratio of the protracted scapular group was not significantly different from that of the asymptomatic group. The LT isolation ratio of the protracted scapular group was significantly lower than that of the asymptomatic group. [Conclusion] We suggest that a proper retraction exercise, for patients with protracted scapular posture is one that includes exercises for selectively strengthening the lower trapezius muscle.</P>
Yoo, Mi Young,Oh, Kwang-Seok,Lee, Jung Won,Seo, Ho Won,Yon, Gyu Hwan,Kwon, Dae Young,Kim, Young Sup,Ryu, Shi Yong,Lee, Byung Ho Heyden & Son 2007 Phytotherapy research Vol.21 No.2
<P>The vascular relaxant effect of the rhizome extract of Rheum undulatum was evaluated with isolated rat thoracic aorta preparations. The methanol extract of the rhizome induced a concentration-dependent relaxation of aortic preparations precontracted with 0.3 µm phenylephrine (EC<SUB>50</SUB> value: 5.8 µg/mL). The activity-guided fractionation of the extract led to the isolation of seven hydroxystilbene components as active principles, i.e. piceatannol, resveratrol, desoxyrhapontigenin, rhapontigenin, piceid, rhaponticin and ϵ-viniferin. Of these, piceatannol, a tetrahydroxystilbene, exhibited the most potent vascular relaxant effect in rat aortic preparations (EC<SUB>50</SUB> value 2.4 µm). The vasorelaxant effect of piceatannol on endothelium-intact aorta rings was diminished completely by the removal of functional endothelium or by pretreatment of the aortic tissues with N<SUP>G</SUP>-nitro-l-arginine methyl ester. These results suggest that piceatannol may be the major mediator responsible for the vasorelaxing properties of the rhizome extract of Rheum undulatum and the vasorelaxant effects of the piceatannol may be mediated via endothelium-dependent nitric oxide signaling pathway. Copyright © 2006 John Wiley & Sons, Ltd.</P>
Yoo, Won-Gyu,Hwang, Young-In The Society of Physical Therapy Science 2010 JOURNAL OF PHYSICAL THERAPY SCIENCE Vol.22 No.3
<P>[Purpose] This study compared the activations of the upper trapezius (UT) and serratus anterior (SA) muscles and the SA/UT activation ratio during dynamic and isometric exercises on various support surfaces. [Subjects] We recruited 12 male subjects, all right-side dominant and with no congenital deformities in the upper extremities and no orthopedic or neurological disorders. [Methods] Push-ups and push-ups plus position maintenance exercises were performed on three different base surfaces: a wobble board, dual wobble boards, and a one-sided wobble board. Electromyography activities of the SA and UT muscles were recorded. [Results] The SA/UT ratio was significantly higher when dynamic exercises were performed using the one-sided wobble board than when they were performed on a normal wobble board or with dual wobble boards. The SA/UT ratio was significantly higher when isometric exercises were performed using a wobble board than when they were performed with a one-sided wobble board. [Conclusion] For clinical applications with a goal of selected SA muscle strengthening, greater benefit is achieved with isometric exercises performed on an unstable support surface and dynamic exercises performed on a stable support surface, as measured by the SA/UT ratio.</P>