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        검색결과 295

        3.
        2023.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Flexible supercapacitors (FS) are ideal as power backups for upcoming stretchable electronics due to their high power density and good mechanical compliance. However, lacking technology for FS mass manufacturing is still a significant obstacle. The present study describes a novel method for preparing FS based on reduced graphene oxide (RGO) using the N+ plasma technique, in which N+ reduces graphene oxide on the surface of a cotton/polyester substrate. The effect of aloe vera (AV) as a natural reducing & capping agent and carbon nanotubes (CNT) as nanoconductors on the electrochemical performance of the electrodes is studied. FESEM and XPS were employed to investigate the electrodes' structural and chemical composition of electrodes. The galvanostatic charge–discharge curves of electrodes revealed the enhancement of the electrochemical activity of the as-prepared electrode upon additions of AV and CNT. The areal capacitance of the RGO, RGO/AV, and RGO/ AV/CNT supercapacitors at 5 mV/s was 511, 1244.5, and 1879 mF/cm2, respectively. The RGO electrode showed capacitive retention of 80.9% after 2000 cycles enhanced to 89.7% and 92% for RGO/AV and RGO/AV/CNT electrodes, respectively. The equivalent series resistance of the RGO electrode was 126.28 Ω, decreased to 56.62 and 40.06 Ω for RGO/AV and RGO/ AV/CNT electrodes, respectively.
        4,000원
        5.
        2023.07 구독 인증기관·개인회원 무료
        Consumers may not be fully aware of the level of personalization used in brand placements in digital advertising. Personalized brand placements use customer data to select and insert preferred brands into digital media content, such as having Coke appear in a YouTube video for someone who favors Coca-Cola. This personalization can enhance the consumer experience (Trifts & Aghakhani, 2018) but may also backfire if placements don't account for changes in brand preference or when personalized placements are co-consumed with a person whose preferences strongly diverge from one’s own (e.g., one’s romantic partner; Brick, Fitzsimons, Chartrand, & Fitzsimons, 2018). Brands have a significant impact on how people perceive each other. Brands convey social information and symbolic meaning (Keller, 1993; Levy, 1959) and can influence behavior (e.g., Fitzsimons, Chartrand, & Fitzsimons 2008) and provide a source of affiliation (Escalas & Bettman, 2003). However, less is known about how brands affect basic social connections like empathy. This notable gap is relevant to the evaluation of the impact of brand placements in digital advertising as brand logos are quite visible in brand placements and can be the first piece of information someone observes when forming an attitude towards another person. For example, imagine an Instagram post of a person wearing a Harley Davidson baseball cap. What kind of person did you imagine? Does your impression change if, instead, the brand was People for the Ethical Treatment of Animals, or the Trump Organization? Moreover, how likely would you be to engage with media showcasing a person supporting this brand. In the current research, we propose that personally disliked brands create a negative bias in person perception and consumer judgment, a phenomenon we coin “brand negativity bias.” Our results show that disliking a brand can reduce empathy for others and substantially bias attitudes toward a digital product associated with but not created by the brand. Specifically, we show process evidence that suggests disliked brand placements reduce (1) empathy toward others through reductions in perceived similarity and (2) attitudes toward a digital product through perceived similarity and empathy, as serial processes. In addition, although we do not empirically test an overall mechanism that explains the negativity bias in its entirety, we speculate several reasons that underlie the broad influence of personally disliked brands (e.g., symbolic, ideological, or moral). From a societal point of view, our findings inform the public to be mindful of how simple consumption cues can bias people’s decision making, which holds implications beyond consumer judgment in domains involving first impressions.
        6.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Kinesio taping (KT) is an intervention method used to improve early function after surgery; however, the effect of KT varies depending on the intervention method. Objectives: To investigated systematically review and quantitatively analyze the effect of KT randomized controlled trials (RCTs) applied to Total knee arthroplasty (TKA) to determine the value of the treatment method for TKA patients. Design: A systemic review and meta-analysis. Methods: Studies were identified by searching multiple electronic databases from January 2023 to February 2023. We selected RCTs comparing KT or no treatment, standard physical therapy, multimodal therapeutic approaches. When possible, we pooled data using random-effects meta-analysis. The Cochrane Bias Method Group's seven-item risk of bias (RoB) assessment tool was used for RCTs. The main outcomes were pain, swelling, and ROM. Results: Three trials (290 patients) provided sufficient data and were similar enough to be pooled for meta-analysis. The standardized mean difference for a reduction of pain was SMD = -1.02, 95 % CI -1.93 to -0.12; p= 0.03; I2= 92 %. The standardized mean difference for a reduction of swelling was SMD= - 0.23, 95 % CI -0.50 to -0.05; p= 0.10; I2= 58 %. The standardized mean difference for ROM was SMD= 1.06, 95 % CI -0.08 to 2.20; p= 0.07; I2= 95 %. Conclusion: KT has a large effect on pain reduction in TKA patients and could be used as an additional treatment option, but a small effect was observed in swelling and ROM.
        4,000원
        7.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Disuse Syndrome is defined as a significantly reduced functional state due to acute disease or surgery. Despite the many advantages to robot rehabilitation, there have been no reported cases of robot rehabilitation being applied to patients with disuse syndrome. Objectives: To investigated report cases of robot rehabilitation in patients diagnosed with disuse syndrome after severe COVID-19 infection. Design: Case report. Methods: The subject of this study was an 81-year-old male who was 161 cm tall and weighed 55.3 kg. At the time of admission to the hospital, the patient had a manual muscle testing (MMT) score of 36 points and a modified barthel index (MBI) score of 7 points. Additionally, the patient had a fall risk assessment score of 10 and a visual analogue scale of 6 for lower back pain. The patient's MMT, trunk impairment scale (TIS), and MBI were followed up. The patient received acute rehabilitation treatment for 4 weeks, followed by additional robotic rehabilitation. For 4 weeks, a standing tilt robot and a wearable robot were applied for 2 weeks each. Results: After 4 weeks of intervention, MMT, TIS, and MBI were improved in the patients. MMT improved from 36 points to 41 points. TIS improved from 0 to 13 points. MBI improved from 7 points to 29 points. Conclusion: There is a need to pay more attention to the rehabilitation of patients with disuse syndrome in recovery rehabilitation hospitals. It is speculated that robot-assisted rehabilitation can be applied to patients with disuse syndrome.
        4,000원
        8.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: As sedentary life increases, people's thoracic vertebra joint movement decreases, and the resulting associated pain is complaining of a lot of discomfort. This is also affecting the autonomic nervous system. Objectives: The purpose of this study was therefore to find out the effect of thoracic vertebra joint mobilization on heart rate variability in upper back pain patients. Design: Randomized controlled trial. Method: Thirty subjects in this study were randomly assigned to two groups of 15 persons each using a randomization tool. Maitland's grade III joint mobilization, hot pack, and interferential current therapy (ICT) were applied to T1-L2 and hot pack and ICT were applied to the control group. The intervention was performed 3 times a week for 4 weeks. Results: There were statistically significant changes in Visual Analog Scale (VAS), Standard Deviation of all Normal R-R Intervals (SDNN), Low Frequency (LF), High Frequency (HF) and LF/HF ratio in the study group, and statistically significant changes in VAS, SDNN, and LF/HF ratio in the control group. In comparison of differences, there were statistically significant changes in VAS. Conclusion: Positive effects were found on SDNN and LF/HF ratio in both the joint mobilization group and the control group compared to before the study. In particular, even LF and HF were positive in the joint mobilization group showed influence.
        4,000원
        9.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Mobilization movements was applied with different forces and frequencies for different clinicians. Force transmission varies with frequency. Objectives: The purpose of this study was to examine the effects of frequency- specific application of grade III PA movement on muscle tone and muscle activity around the lumbar vertebrae. Design: A one group pretest-posttest design. Methods: Twenty study subjects applied grades III of PA movement exercise of 0.5 Hz and 1 Hz with a force of 13 N around the 1st and 3rd lumbar vertebrae, and muscle tone and muscle activity were measured and compared before and after. Results: This study showed that 0.5 Hz grade III PA activity exerted an effect on the decrease in muscle tone of the 1st and 3rd right and left lumbar muscles. It was found that 0.5 Hz affected the right side of L1 and 1.0 Hz affected the left side of L1 in near-activity when applying the grade III PA movement by frequency. Conclusion: In the future, it will be necessary to investigate the effect of applying frequency according to various grades of PA movement.
        4,000원
        10.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: This study attempted a comparative analysis of three splint fabrication methods currently used in clinical fields. Traditional Orthotic Fabrication Method Utilizing Thermoplastic Resin, the Methodology for creating assistive devices using 3D scanner, commercial CAD software, and 3D printing technology, and the Fabrication Method of Arm Splint Based on XR (eXtended Reality) Algorithm. Objectives: The study recruited 12 undergraduate students majoring in physical therapy and occupational therapy who had sufficient knowledge of splints, with an equal gender distribution. The study randomized the participants and conducted the experiment and overall process using a stratified approach. Design: Clinical applied technology experiment Methods: The study used QUEST 2.0 (Quebec User Evaluation of Satisfaction with assistive Technology ver. 2.0) to survey standardization, weight, ease of use, safety, durability, usability, effectiveness, and patient satisfaction, and statistically analyzed all results as quantitative indicators. Results: The score of QUEST 2.0 showed different aspects in some items, and it is difficult to say that certain technologies are superior overall. Conclusion: The study attempted an intuitive interpretation of the results. Overall, it was concluded that the XR method, which allows for easy and fast fabrication, is likely to be more readily accepted in future clinical practice.
        4,000원
        11.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Back stabilization exercises have been applied to decrease low back pain. Pilates exercise can help stabilize the low back and pelvic alignment, and uses equipment such as cadillac, reformer, chair, and barrel. Objectives: This study was conducted to confirm the effects of pilates exercise using cadillac equipment and self-exercise using back pain educational materials on pain, pelvic inclination, and single leg stance ability in adult women with back pain. Design: Randomized controlled trial. Methods: Twenty-five participants (female 25) with unspecified low back pain with lumbar hyperextension and anterior pelvic tilt were recruited. 25 adult women with back pain were randomly divided into a pilates group and a selfexercise group. Pilates exercise intervention using a cadillac was administered to the pilates group, and posture and lifestyle education materials for back pain were provided to the self-exercise group. All of the interventions were conducted 3 times a week for 4 weeks, 50 minutes per session, and the results are as follows. Results: Data analysis in each group revealed statistical differences between self-exercise and divided into a Pilates intervention. A visual analog scale (VAS)/oswestry disability index (ODI) decreased pain in both groups, Independent t-test decreased pain in both groups, but there was no significant difference. Data analysis divided into a pilates group revealed statistical differences between a VAS/ODI and pelvic tilt angle and static balance. It has been shown to increase scores or relieve pain. Conclusion: Through this study, it was confirmed that the pilates exercise using cadillac can be effectively used to reduce back pain, improve pelvic alignment, and improve single leg stance ability in adult women with low back pain.
        4,000원
        12.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: Swallowing disorder is a common disease that can cause various complications such as malnutrition, dehydration, aspiration pneumonia, and poor quality of life, and can affect people of all ages, from infants to the elderly. Swallowing disorder rehabilitation is a complex process involving various skills such as exercise, diet modification, and posture adjustment. This study implements a rehab program for swallowing disorders using the Kinesio Tapping technique. Design: Prospective pilot case study. Objectives: To improve laryngeal detachment by providing external support to the muscles involved in swallowing using kinesio taping for conventional complex swallowing disorder rehabilitation. Methods: The study included 16 participants who were diagnosed with swallowing difficulties after a stroke and admitted to a rehabilitation ward in Ulsan. The average age of the participants, consisting of 9 males and 7 females, was 69.0 years (SD=1.23) and 64.0 years (SD=1.45), respectively. The stroke types were hemorrhagic and infarction, with onset periods ranging from 6 to 12 months (SD=1.11) in all participants. Each participant received a video fluoroscopy study (VFSS) for six months using the taping method developed by the research team. Kinesio taping techniques were developed by two professional physical therapists and one occupational therapist based on anatomical movements. Results: Significant differences were observed in self-training on the bed after the rehabilitation program compared to the initial period Kinesio taping can help improve laryngeal dislocation and reduce the risk of aspiration by providing external support to the muscles involved in swallowing. However, the effectiveness and optimal application techniques of kinesio taping in the rehabilitation of swallowing disorders are not yet clear. Conclusion: The results of this study could lead to the development of a new treatment protocol that incorporates kinesio taping as a standard therapy for the rehabilitation of swallowing disorders in bedridden patients.
        4,000원
        13.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: It is well known that squat exercises are good for scoliosis patients. Especially wall facing squat (WS) is believed to be more effective than normal squat (NS). Objectives: In order to find out what effect the wall squat has on the rehabilitation exercise of patients with lumbar scoliosis compared to the conventional squat, the force between the lumbar segments was compared using a motion analysis system. Design: Quasi-experimental study. Methods: In this work, an attempt was made to provide a scientific basis for these experiences. Inverse dynamics simulations were performed for each of the 10 subjects with mild scoliosis during NS and WS using subject-specific 3D musculoskeletal models. Exercises with three sets of five cycle for NS or WS were performed. Muscle forces calculated from the simulations were compared with electromyography data for verification. Results: The imbalance of muscle forces between the right and left in erector spinae (ES) decreased with the progress of WS sets. The difference of 14.1% for the 1st set diminished to 1.8% during the 3rd set. Conclusion: The overall level of right and left ES muscle forces also increased from the 1st set to the 3rd set. The results of simulations indicated that WS was more effective than NS for scoliosis correction.
        4,000원
        14.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, gold nanoparticles (AuNPs) were synthesised using green chemistry to decorate multi-walled carbon nanotubes (MWCNTs) made from walnut shells transmission electron microscopy, field-emission scanning electron microscopy (FESEM), atomic force microscopy and fourier transforms infrared spectroscopy were used to diagnose MWCNTs and AuNPs. MWCNT-COOAu, MWCNT-COO and MWCNT-Au were diagnosed by Raman, energy dispersive X-ray analysis and FESEM. The effect of AuNPs, MWCNT-COO, MWCNT-COOAu and MWCNT-Au on pure and serum alkaline phosphatase (ALP) enzyme activity was studied in vitro using the enzyme-substrate 4-nitrophenyl disodium orthophosphate. For pure enzymes, Vmax slightly increased as the concentration of MWCNT-Au, MWCNT-COOAu and MWCNTCOO increased, whereas the Vmax values decreased as the concentration of AuNPs increased. The inhibition type for all NPs varied. For serum ALP enzyme, the Vmax values for Au-based NPs decreased as the concentration of NPs increased. The Vmax values exceeded the standard value at the concentrations of 25, 50 and 75 ppm for MWCNT-Au and MWCNT-COOAu, whereas the Vmax values increased over the standard value for all concentrations of AuNPs.
        4,500원
        15.
        2023.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Here, we report the preparation of microporous-activated carbons from a Brazilian natural lignocellulosic agricultural waste, cupuassu shell, by pyrolysis at 500 ºC and KOH activation under different experimental conditions and their subsequent application as adsorbent for CO2 capture. The effect of the KOH:precursor ratio (wt/wt%) and the activation temperature on the porous texture of activated carbons have been studied. The values of specific surface area ranged from 1132 to 2486 m2/ g, and the overall micropore volume ranged from 0.73 to 1.02 cm3/ g. Carbons activated with 2:1 ratio of KOH and activation temperature of 700 ºC presented a CO2 adsorption at 1 bar of 7.8 and 4.4 mmol/g at 0 °C and 25 ºC, respectively. The isosteric heat of adsorption, Qst , was calculated for all samples by applying the Clausius–Clapeyron approach to CO2 adsorption isotherms at both temperatures. The values of CO2 adsorption capacities are among the highest reported in the literature, especially for activated carbons produced from biomass.
        4,000원
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