• 한국세라믹학회지
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• 제50권1호
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• pp.63-69
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• 2013

Negative-temperature coefficient (NTC) thermistors based on nickel manganite spinel ($NiMn_2O_4$) are widely used for many applications, such as sensors and temperature compensators, due to their good thermistor characteristics and stabilities. However, to achieve thermistors with a high NTC B constant, which is an important figure of merit pertaining to the degree of temperature sensitivity, the activation energy should be high such that high resistivity at ambient temperatures results. To obtain a high B constant and low resistivity, Al and Si modified spinel structured $Ni_{0.6}Si_{0.2}Al_{0.6}Mn_{1.6}O_4$ hybrid thick films with the conducting metal oxide of $LaNiO_3$ were fabricated on a glass substrate by aerosol deposition at room temperature (RT). The NTC-$LaNiO_3$ hybrid thick films showed resistivity as low as < $100k{\Omega}\;cm$ at $90^{\circ}C$, which is one or two orders of magnitude lower than that of the monolithic NTC films, while retaining a high B constant of $NiMn_2O_4$ of over 5500 K when 20 wt% $LaNiO_3$ was added without a post-thermal treatment. These phenomena are explained by the percolation threshold mechanism.

• 대한족부족관절학회지
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• 제23권3호
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• pp.105-109
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• 2019

Purpose: To compare the efficacy between cast immobilization and functional treatment using an ankle brace as a treatment for acute lateral ankle sprain. Materials and Methods: This study reviewed the medical records of 157 acute ankle sprain patients who were treated between 2009 and 2014. A total of 101 cases were included in this study except for cases with a combined injury, and could not be followed up for eight weeks after the first visit. The patients were divided according to the treatment modality: a cast immobilization group (64 cases) and functional treatment group (37 cases). The clinical outcomes were assessed retrospectively based on the medical records of each group. The residual symptoms, such as pain, swelling, and instability, at three weeks after the primary treatment and at the last visit were compared. Results: The residual pain and instability were significantly common in the functional treatment group at three weeks. Five cases (7.8%) of pain and one case (1.6%) of instability were in the cast group whereas nine cases (24.3%) of pain and six cases (16.2%) of instability in functional treatment group (p=0.021, p=0.014). On the other hand, there was no meaningful difference at the last follow-up. Residual pain, swelling, and instability at the last visit were noted in three (4.7%), six (9.4%), and four cases (6.3%) in the cast group, and three (8.1%), three (8.1%), and three (8.1%) were observed in the functional treatment group. Six patients refused cast immobilization. Conclusion: Although there was no significant difference at the last follow-up, cast immobilization appears to be more effective than a functional brace in terms of early pain relief and early restoration of ankle stability as a treatment for acute ankle lateral sprain in this study.

• The Journal of Korean Physical Therapy
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• 제16권3호
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• pp.97-111
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• 2004

This study, adopting the pretest-post test experimental study, is designed to find out how the functional electrical stimulation makes effect on the balance of a patient with spasticity of the ankle plantarflexor muscle caused by hemiplegic after stroke. The 46 subjects for this study were randomly sampled out of the patients who were hospitalized from September 1, 2003 to November 30, 2003 in H sanitarium in Yangpyung. The patients were with spasticity of the ankle plantarflexor muscle caused by hemiplegic after stroke and able to walk without supporting implements. The purpose of the study is firstly to analyze the change of ROM, FRTof a patient with spasticity of the ankle plantarflexor muscle when the functional electrical stimulation is applied and secondly to find out how the sex, age, height, weight, part of the diagnosis, duration of pain, experience of relapse and getting hurt from a fall of a patient make effect on the change. The experimental group for the study is divided into two to compare the differences of the effect. The exercising treatment only was performed for the conrtol group, and the functional electrical stimulation to the ankle dorsiflexor muscle as well as the exercising treatment was applied to the experimental group. The ROM test was performed to check the range of motion of the ankle with a double armed universal goniometer. The test was done 3 times to take an average. FRT were performed to check the balance. The statistical test was conducted using the SPSS 10.0/PC program by means of the following methods: χ2-test and t-test for testing homogeneity between the groups; paired t-test, independent sample t-test, F-test, and two-way ANOVA for analyzing the changes before and after the treatment. The levels of statistical significance of all the data were maintained at p<.05. According to the test, ROM has more decreased in experimental group than in control group when the functional electrical stimulation was applied only to the experimental group. However, the significant statistic difference was not shown (p=.059). FRT showed remarkable differences in the experimental group compared to the control group, showing the significant statistic difference (p=.000). On the one hand, the change of ROM, FRT related with the sex, age, height, weight, part of the diagnosis, and experience relapse was a meaningless minimum value. The change of ROM related to the duration of pain and the experience of falling down was also meaningless. However, FRT showed significant statistic difference (p<.05). According to the test above, the application of functional electrical stimulation to a patient with spasticity of the ankle dorsiflexor muscle caused by hemiplegic after stroke makes significant effect on the balance of a patient, but the result has nothing with the sex, age, height, weight, part of the diagnosis, duration of pain, experience of relapse and getting hurt from a fall of a patient. However, it is regarded to give contribution to the balance improvement of a patient. Therefore, this study expects to be a valuable clinical material for a patient with spasticity.

• 대한한의학회지
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• 제31권1호
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• pp.1-13
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• 2010

Objective: Functional dyspepsia is a prevalent disease. It impedes subjective quality of life. The purpose of this study was to examine the equivalent effect of herb medicine treatment (DA-9701) for functional dyspepsia. Methods: In this randomized, single-blinded, placebo-controlled study, we compared a herb medicine (DA-9701) with standard treatment (mosapride) and placebo for the treatment of functional dyspepsia. 42 volunteers who satisfied the requirements were enrolled in study. Severity of dyspepsia was measured by Nepean Dyspepsia Index (NDI) and Functional Dyspepsia Quality of Life (FD-QOL) before and after treatments. Results: 1. In the DA-9701 group, total key symptoms score was significantly lower and improve rate of key symptoms was higher than in the mosapride and placebo groups, but there were no statistically significant differences between three groups. 2. In the DA-9701 and mosapride groups, "nausea" and "bad breath" were significantly lower compared with the placebo group. 3. In the DA-9701 group, NDI Quality of Life scores were significantly higher, but there were no [other] statistically significant differences between the three groups. 4. In the DA-9701 and mosapride groups, FD-QOL scores were higher compared with the placebo group, but there were no statistically significant differences between the three groups. Conclusion: Herb medicine treatment (DA-9701) is effective to improve the symptoms and quality of life in patients with functional dyspepsia.

• 재활간호학회지
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• 제10권1호
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• pp.12-20
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• 2007

Purpose: The purpose of this study was to evaluate the effects of exercise on functional status, activity of daily living and social re-adjustment(social function, depression) in stroke patients. Method: A quasi-experimental pretest and posttest study was used. The subjects consisted of 33 adults who were stroke in the G hospital, and the period of data collection was from February 8, 2006 to August 30, 2006. Seventeen patients were assigned to experimental group and sixteen to the control group. The subjects of the experimental group performed an exercise for 15-20 minutes twice a day, 3-5 times per week, during six weeks. Outcome variables were functional status, activity of daily living and social re-adjustment. Chi-Square test and T-test were used to examine the equality of the subjects and ANCOVA used to examine the group difference using SAS. Results: There ware significant differences in functional status, activity of daily living, and social re-adjustment(social function, depression) between the two groups. Conclusion: The above results state the exercise can be an effective intervention to improve the functional status, activity of daily living, and social re-adjustment(social function, depression) of stroke patients.

• 대한간호학회지
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• 제37권2호
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• pp.163-170
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• 2007

Purpose. Despite the high prevalence of back pain and its subsequent effects in post-partum women, intervention programs are scarce. The purpose of this study was to test the effects of a back-pain-reducing program on post-partum women who experienced low-back pain during pregnancy. Methods. A non-equivalent control-group pretest-posttest design was used. Pregnant women who attended a hospital for prenatal check-ups and experienced back pain participated in an intervention program (n=27), and the results were compared with women in a control group from another hospital (n=25). Results. At 8 weeks post-partum, the pain intensity, functional limitations were lower in the intervention group than in the control group. However, differences in mean change of the pain intensity and functional limitations between 36 and 39 weeks of gestation and at 8 weeks post-partum were not statistically significant between the groups. Moreover, the flexibility, post-partum functional status, and post-partum depression did not differ significantly between the groups. Conclusions. A back-pain-relief program in this study was not effective to reduce the back-pain intensity in post-partum women and to decrease the associated functional limitations. The implications for nursing practice and directions for future research are discussed.

• 대한한방내과학회지
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• 제29권4호
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• pp.904-912
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• 2008

Objectives : The objective of this study was to investigate the correlation between swallowing acid symptom and autonomic nerve system in dyspepsia patients. Methods : The test for heart rate variability (HRV) was done to 50 dyspepsia patients at the Department of Internal Medicine, Kang-Nam Kyung-Hee Korean Hospital. 21 among 50 patients had swallowing acid symptom and 29 didn't. We checked HRV and compared HRV index between the two groups. We also divided the patients into functional dyspepsia and organic dyspepsia groups, and then checked HRV respectively. Results were as follows : 1. In dyspepsia patients with swallowing acid, LF/HF ratio was higher than the dyspepsia patients without swallowing acid but the result was not statistically significant. 2. TP, LF, VLF, and LF/HF ratio was higher in the functional dyspepsia group than in the organic dyspepsia group. Average age in the organic dyspepsia group was significantly higher than in the other group. Both results showed statistically significant difference. 3. In the functional dyspepsia group, LF/HF ratio was significantly higher in patients with swallowing acid symptom than those without. However, in eructation and nausea symptoms, HRV index was not statistically significant. Conclusion : This study shows the ratio of sympathetic and parasympathetic nerve system increased in the swallowing acid patient group compared with the non-swallowing acid patient group in functional dyspepsia patients.

• 아동학회지
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• 제17권1호
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• pp.153-171
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• 1996

The purpose of this study was to examine children's social-cognitive modes of play in same-age and mixed-age kindergarten classrooms. The subjects were 45 children. in three classrooms of 4-year-olds, 69 children in three classrooms of 5-year-olds, and 60 children in three mixed-age classrooms of 4- and 5-year-olds. Observations were conducted by videotape recordings. Observation periods were of five-minutes duration. There were ten observations of each child's indoor free-play periods. Observational data were collected by the time sampling method with the social cognitive play behavioral checking list based on an adaptation of one devised by Rubin(1985). The data was analyzed by t-test with the SAS computer program. Four- and five-year-olds in mixed-age classrooms were more likely to engage in "complex" modes of play than 4- and 5-year-olds in same-age classrooms. Four-year-olds in same-age classrooms were more likely to engage in solitary-functional, parallel-functional, and group-functional play than 4-year-olds in mixed-age classrooms. However, 4-year-olds in mixed-age classrooms were more likely to engage in group-constructive, group-dramatic, solitary-game, and group-game play than 4-year-olds in same-age classrooms. Five-year-olds in same-age classes were more likely to engage in solitary-functional and parallel-functional play than 5-year-olds in mixed-age classes. Five-year-olds in mixed-age classes were more likely to engage in group-constructive, group-dramatic, and group-game play than their counterparts in same-age settings.

• 대한물리의학회지
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• 제12권4호
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• pp.73-82
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• 2017

PURPOSE: Proprioceptive Neuromuscular Facilitation (PNF) has been shown to improve body function and activity/participation in people with functional dysfunctions. This study evaluates if active exercise using theraband in PNF pattern may induce similar benefits as exercise using manual PNF pattern performed by physiotherapists on promoting mobility, balance and fear of fall in community-dwelling elderly. METHODS: Twenty-three community-dwelling elderly with independent activities of daily living were recruited and randomly allocated into either PNF group - exercise in PNF pattern by trained physiotherapists or Theraband-PNF (T-PNF) group - exercise using theraband in PNF pattern, for an hour, twice weekly for 4 weeks. Functional outcomes such as Timed Up and Go test, Elderly Mobility Scale, Berg balance scale, functional reach and subjective measures including fear of fall (FOF) scale, bodily pain in visual analogue scale were measured pre and post-program. RESULTS: Twenty-one participants completed the program. PNF group demonstrated significant within-group improvements in all subjective measures and objective measures. Similar within-group improvements were demonstrated in all outcome measures except FOFS in T-PNF group. However, no between-group differences were found in any of the outcome measures. CONCLUSION: Comparable improvements in functional outcomes in community dwelling elderly were demonstrated in both groups. As manual PNF exercise traditionally need clinicians' contact and feedback on patient which limit the training to be carried out extensively in community setting. The current findings suggest that exercise using theraband in PNF pattern is feasible to be adopted as self-practice exercise for community-dwelling elderly to induce beneficial effects on functional outcomes.

• The Journal of Korean Physical Therapy
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• 제26권2호
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• pp.110-116
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• 2014

Purpose: The purpose of study was to investigate the effects of combination patterns exercise of Proprioceptive Neuromuscular Facilitation (PNF) on unstable surfaces on pain, functional disability, and fear avoidance belief in patients with chronic low back pain. Methods: Twenty four patients were assigned to either the experimental group (n=12) or the control group (n=12). Patients in the experimental group performed combination patterns exercise of PNF on unstable surfaces. Patients in the control group performed combination patterns exercise of PNF on stable surfaces. Both exercises were performed for five days per week, for a period of six weeks. Pain was measured by the Visual Analogue Scale (VAS) and University of Alabama at Birmingham (UAB). Functional disability was measured using the Oswestry Disability Index (ODI) and Roland Morris Disability Questionnaire (RMDQ). Fear avoidance belief was measured using the Fear Avoidance Beliefs Questionnaire (FABQ). A paired t-test was used for determination of differences before and after treatment, and an independent t-test was used for determination of differences between treatment groups. Results: In within group comparison, the experimental group showed statistically significant difference for all variables (p<0.05). In comparison between two groups, the experimental group showed relatively greater significant difference for all variables (p<0.05). Conclusion: Based on such results, it can be said that combination patterns exercise of PNF on unstable surfaces has an effect on pain, functional disability, and fear avoidance belief in patients with chronic low back pain.