• Steel and Composite Structures
• /
• v.36 no.4
• /
• pp.427-446
• /
• 2020

This paper carries out the progressive collapse analysis of stainless steel composite beam-to-column joint sub-models and moment-resisting frames under column removal scenarios. The static flexural response of composite joint sub-models with damaged columns was initially explored via finite element methods, which was validated by independent experimental results and discussed in terms of moment-rotation relationships, plastic hinge behaviour and catenary actions. Simplified finite element methods were then proposed and applied to the frame analysis which aimed to elaborate the progressive collapse response at the frame level. Nonlinear static and dynamic analysis were employed to evaluate the dynamic increase factor (DIF) for stainless steel composite frames. The results suggest that the catenary action effect plays an important role in preventing the damaged structure from dramatic collapse. The beam-to-column joints could be critical components that influence the capacity of composite frames and dominate the determination of dynamic increase factor. The current design guidance is non-conservative to provide proper DIF for stainless steel composite frames, and thus new DIF curves are expected to be proposed.

• Clinics in Shoulder and Elbow
• /
• v.1 no.1
• /
• pp.46-50
• /
• 1998

The superior shoulder suspensory complex is composed of glenoid fossa, coracoid process, coracoclavicular ligament, distal clavicle, acromioclavicular ligament, acromion. Traumatic double disruptions of this complex lose its suspensory action on the shoulder joint and result in functional loss and deformity. Careful radiologic evaluation and appropriate management are required for injuries to this complex. Ipsilateral fractures of clavicle and scapula create unstable anatomic situation on shoulder joint. Conservative treatment usually fails to achieve good functional recovery due to rotator cuff weakness, nonunion, delayed union, malunion and neurovascular injury. Authors studied the result of operative treatment of ipsilateral clavicle and scapular fractures to prevent such complications. Seven cases were treated with open reduction and internal fixations of clavicle alone or clavicle and scapula simultaneously and followed up for nineteen months(twelve months - thirty-eight months). All but one patient showed good or excellent functional result according to the scoring system of Rowe. Poor result was developed in the case which had brain injury. Rigid fixations of clavicle alone or clavicle and scapular fractures both can achieve stable reduction of the fractures and prevent sequelae. We concluded that operative treatment of ipsilateral fractures of clavicle and scapula is safe and yields predictable good results.

• Journal of Pharmacopuncture
• /
• v.11 no.1
• /
• pp.31-40
• /
• 2008

Objectives : To verify pain relief effects and allergy inhibitory action for the osteoarthritis of the knee joint in Sweet Bee Venom in which allergy causing enzyme is removed. Methods : We randomly allocated 30 participants to treatment group Sweet Bee Venom and Bee Venom. Outcomes on pain reduction were measured by 100mm VAS(Visual Analog Scale). And we recorded into details allergic responses during Pharmacopuncture treatment. Results : Whole body condition and pain rate through VAS measurement were improved significantly in 2 weeks. We could get difference in pain score of two Pharmacopuncture groups significantly in 2 weeks. Sweet BV group($0.1{\beta}mg/m{\ell}$) showed superior reduction in pain compared to the BV group($0.1{\beta}mg/m{\ell}$) significantly. And other allergic responses such as edema, itchiness, pain were significantly lower in the Sweet BV group.

• The Journal of Korean Physical Therapy
• /
• v.11 no.2
• /
• pp.93-102
• /
• 1999

Alignment of the hip joint and pelvis affects it's weight-bearing capabilities as well as the motion available at the joints. The normal hip joint is well designed to withstand the forces that act through and around it, assisted by the trabecular systems, cartilagious, muscles, and ligaments. Alterations in the direction or magnitude of forces action around the injury and degenerative changes. The integration of motion of the pelvis with motion of the vertebral column not only increases the ROM available to the total column but also reduces the amount of flexibility required of the lumbar lesion. In any instance in which there is normal or abnormal pelvic motion during weight hearing and the head must remain upright, compensatory motions of the lumber spine will occur if available. The motions that occur at the hip, pelvis, and lumbar spine during forward trunk bending with the motions that occur during anterior and posterior tilting of the pelvis in the erect standing postion.

• Korean Journal of Applied Biomechanics
• /
• v.21 no.1
• /
• pp.57-65
• /
• 2011

This research was conducted to biomechanically analyze Tippelt motion in parallel bars, and establish technical understanding. To achieve that goal, the performances of the Tippelt acts carried out by five world top-class national gymnasts in the parallel bars 3-dimensional cinematographic analysis and EMG analysis were conducted and following conclusion were obtained. The Tippelt motions of excellent national gymnasts perform tap motion through the down swing of a large circular movements, and perform kick-out motion rapidly extending shoulder joint angle and hip joint angle with the trunk in a position close to perpendicular position at the vertical downwardness of the grasping the bars. At this time, if handstand starting the movement is too delayed or rapidly down swung, it was shown that from the initial falling, unnecessary muscular power was wasted in trapezius, anterior deltoid, erector spinae, latissimus dorsi, upper rectus abdominis, lower rectus abdominis. The muscular parts in tap motion generating muscle action potential were pectoralis major, rectus femoris, upper rectus abdominis, lower rectus abdominis, and those in kick-out motion were upper rectus abdominis, lower rectus abdominis, trapezius and anterior deltoid.

• Earthquakes and Structures
• /
• v.19 no.5
• /
• pp.315-329
• /
• 2020

Through bolt connections in Concrete Filled Steel Tubes (CFSTs) has been proved to be good in terms of seismic performance and constructability. Stiffened extended end plate connection with full through type bolt helps to avoid field weld altogether, and hence to improve the quality of joints. An experimental study was conducted on the hysteretic performance of square interior beam-column connections using flat extended end plates with through bolt. The study focuses on the effect of the bond between the tie rod and the core concrete on the cyclic performance of the joint. The study also quantifies how much the interior joint is getting strengthened due to the confinement effect induced by bi-directional bolting, which is widely used in 3D moment resisting frames. For a better understanding of the mechanism and for the prediction of shear capacity of the panel zone, a mathematical model was generated. The various parameters included in the model are the influence of axial load, amount of prestress induced by bolt tightening, anchorage, and the concrete strut action. The study investigates the strength, stiffness, ductility, and energy dissipation characteristics. The results indicate that the seismic resistance is at par with American Institute of Steel Construction (AISC) seismic recommendations. The bidirectional bolting and bond effect have got remarkable influence on the performance of joints.

• The Korean Journal of Physiology and Pharmacology
• /
• v.14 no.4
• /
• pp.199-204
• /
• 2010

The potential therapeutic action of shikonin in an experimental model of rheumatoid arthritis (RA) was investigated. As a RA animal model, DBA/1J mice were immunized two times with type II collagen. After the second collagen immunization, mice were orally administered shikonin (2 mg/kg) once a day for 35 days, and the incidence, clinical score, bone mineral density (BMD), bone mineral content (BMC) and joint histopathology were evaluated. BMD in the proximal regions of the tibia largely increased in the shikonin treatment group compared with the control group. We also examined the effect of shikonin on inflammatory cytokines and cartilage protection. Shikonin treatment significantly reduced the incidence and severity of collagen-induced arthritis (CIA), markedly abrogating joint swelling and cartilage destruction. Shikonin also significantly inhibited the production of matrix metalloproteinase (MMP)-1 and up-regulated tissue inhibitors of metalloproteinase (TIMP)-1 in mice with CIA. In conclusion, shikonin exerted therapeutic effects through regulation of MMP/TIMP; these results suggest that shikonin is an outstanding candidate as a cartilage protective medicine for RA.

• Journal of muscle and joint health
• /
• v.4 no.2
• /
• pp.262-276
• /
• 1997

The purposes of this study are 1) to modify a self-help program for patients having fibromyalgia, 2) to revise instruments to measure the self-efficacy and impact of fibromyalgia; and 3) to test the effects of the program in terms of self-efficacy, physical activities, and clinical symptoms. The subjects of this study were persons diagnosed as fibromyalgia at a university hospital. For the first two purposes, six patients were selected. Twenty three subjects for the third purpose were selected and assigned to experimental and control group on the base of their residence. Thirteen were assigned to the experimental group, while 10 to the control group. Instruments selected for revision were self-efficacy scale and fibromyalgia impact profile. On the basis of the text developed by Arthritis Foundation, a program for patients with fibromyalgia was tentatively developed. Instruments for measurement of self-efficacy and impact of fibromyalgia were revised to show high reliabilities. Results obtained by utilization of the program were as follows : 1) There were no increase of self-efficacy and physical activities. 2) There were no improvement of the number of tender points and pain. 3) There were improvement of depression, fatigue and sleep impairment. These findings indicate the needs for modification of the program with emphasis of exercise for relaxation of tender points, increases of enactive action and vicarious learning.

• Journal of muscle and joint health
• /
• v.18 no.1
• /
• pp.28-38
• /
• 2011

Purpose: This paper was aimed to investigate the effect of laugher therapy on the pain, depression and sleep disturbance in elderly patients who admitted in long term care facility. Method: This study used a nonequivalent control group pretest-posttest design. A sample of 40 elderly patients (20: experimental group, 20: control group, 65 or older) were recruited. Visual analogue scale was used to measure level of pain level, Geriatric Depression Scale Short Form Korea Version (GDSSF-K) for depression. Sleep Scale for sleep. The laugher therapy was given twice a week for four weeks (8 times). Each therapy consists of preparatory, action and finishing stage. Data were analyzed by PASW 18.0. Results: The pain score in experimental group was significantly different from that in control group (t=4.17, p<.001). The level of depression in experimental group was significantly different from that in control group (Z=4.12, p<.000). The level of sleep in experimental group was not significantly different from that in control group (Z=-1.43, p<.152). Conclusion: A laugher therapy is expected to be practical used an efficient method of a nursing intervention to elderly patients in long term care facility.

• Journal of muscle and joint health
• /
• v.30 no.2
• /
• pp.70-82
• /
• 2023

Purpose: This study aims to systematically clarify and enhance the understanding of osteoporosis prevention interventions based on Health Belief Model (HBM). The analysis includes HBM constructs, intervention characteristics, and outcomes from prior studies. Methods: We extensively searched eight electronic databases to identify peer-reviewed studies that implemented HBM-based interventions for osteoporosis prevention until June 2023. Results: Initially, 638 articles were identified, and after a rigorous evaluation process, 11 articles were included in the evidence synthesis. The analysis revealed that HBM-based interventions significantly improved likelihood of taking action including knowledge, HBM constructs and adopting preventive behaviors such as calcium intake and exercise. However, most interventions included in this study did not fully encompass all five HBM constructs or specify the particular components adopted. Conclusion: There is a need for additional research and intervention refinement for a more comprehensive understanding of osteoporosis preventive interventions. This should involve a concerted effort to incorporate all HBM constructs into the context of osteoporosis prevention. Thus, more effective interventions promoting optimal preventive behaviors and reducing the burden of osteoporosis can be developed.