• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.05a
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• pp.219-223
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• 2003

For the noise reduction measures in a construction field or near the traffic line receiver is often the most economic measure in order to exclude the propagated sound. The dimension of the barrier is decided by the noise and construction design, and the constructive quality of a soundproof panel shall be secured in accordance with KS F4770 to guarantee the safety of sound barriers. In this paper the problems included in the KS F4770-1 that is the regulation for the metallic sound barrier of the absorption type are identified and it is suggested what to be corrected or improved. Through a series of the analyses, conclusions were reached that it is required to improve test methods in KS F4770-1 as well as to break down test loads for building more cost-effective sound barrier.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.11a
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• pp.183-184
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• 2018

In this study, an inflated resistance test is conducted out of the nine test items of KS F 2622 using an appropriate series of waterproof materials, and the results are reported and compared to the performance range presented in the KS F 2622 inflated resistance test.

• The Journal of Engineering Geology
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• v.6 no.1
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• pp.1-13
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• 1996

The fracture transmissivity($T_f$) is the most important parameter of fracture in assessing groundwater flow in fractured rock masses by using the DFN(Discrete Fracture Network) modeling. $T_f$, the most sensitive parameter m DFN modeling, is dependent upon aperture, size and filling characteristics of each fracture set. In the field test, the accuracy of $T_f$ can be increased with Borehole Acoustic Scanning (Televiewer) and Fixed Interval Length(FIL) test in constant head. $T_f$ values measured from FIL test was modified and estimated by each fracture set on the basis of the Cubic Law and the information of aperture and filling characteristics obtained from Televiewer. The modified $T_f$ results in the increase of confidence and reliability of modeling results including the amount of tunnel inflow.And, this approach would reduce the uncertaintity of the assessment for groundwater flow in fractured rock masses using the DFN modeling.

• Research in Community and Public Health Nursing
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• v.24 no.3
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• pp.346-357
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• 2013

Purpose: This study was conducted to examine an exercise program using a lay health leader for elderly participants. The test covered physical fitness (grip strength, static balance and complex movement abilities), depression, cognitive function and quality of life. Methods: A quasi- experimental study using a non-equivalent control group pre-post design was employed. The participants were 62 elders from an institution for the aged, of whom 30 were included in the experimental group and 32 in the control group. The exercise program using a resident volunteer as a lay health leader was run three times a week for 12 weeks. The collected data were analyzed by $x^2$ test, t-test, paired t-test, and ANCOVA with SPSS/WIN 19.0. Results: After the program, left grip strength (F=1.77, p<.001), right grip strength (F=9.97, p<.001), static balance (F=2.79, p<.001), ability to move complex (F=1.76, p<.001), depression (F=7.66, p<.001), the cognitive function (F=8.39, p<.001) and quality of life (F= 1.08, p<.001) in the experimental group were significantly better than those in the control group. Conclusion: Study findings indicated that using a resident volunteer as a lay health leader was effective. It can be recommended as a public health resource and for consistent and comfortable education for the elderly in communities.

• The Journal of the Korean Society for Microbiology
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• v.22 no.3
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• pp.301-307
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• 1987

A total of 42 strains of Candida albicans were examined for susceptibility to three antifungal agents, amphotericin B(AMB), 5-fluorocytosine(5-FC), and ketoconazole(KTZ), using defined medium, synthetic amino acid medium-fungal(SAAM-F), supplemented yeast nitrogen base(SYNB) and undefined medium Sabouraud's dextrose broth(SDB) and Kimmig broth media. A tube dilution method was used with minimum inhibitory concentrations(MICs) determined after incubation for 24 hour and 48 hours. All testes were performed in duplicate. In general, MICs were more reproducible after 48 hour of incubation. Forthermore, MICs determined after incubation for 48 hours were significantly higher than those determined after 24 hours. The actural MICs obtained with the different antifungal agents were clearly influenced by the test medium used. The rank order of AMB MICs according to the test medium was as follows: SAAM-F>SYNB>SDB>Kimmig broth. With 5-FC, the following pattern was observed: SYNB>SAAM-F>SDB>Kimmig borth. For ketoconazole, the MICs according to the test medium was SAAM-F>SDB>SYNB> Kimmig broth. In amphotericin B, the MICs mean value with the test medium was as follows: SDB, 0.24 mcg/ml; Kimmig broth, 0.29 mcg/ml; SYNB, 0.21 mcg/ml and SAAM-F, 0.15mcg/ml. The actural value of 5-FC was; SDB, 37.20 mcg/ml; Kimmig broth, 67.41mcg/ml; SYNB, 21.29 mcg/ml and SAAM-F, 24.61 mcg/ml and in ketoconazole, the MICs value was; SDB, 1.83 mcg/ml; Kimmig broth, 4.08 mcg/ml; SYNB, 1.95 mcg/ml and SAAM-F, 1.41 mcg/ml. The results of this investigation suggested that broth dilution susceptibility testing of yeast and yeast-like fungi are best performed with an incubation period of 48 hours. Furthermore, medium composition can significantly influence the results of such testing.

• Journal of the Korea Institute of Building Construction
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• v.24 no.1
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• pp.43-53
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• 2024

This research undertook the assessment of six types of silicone sealants prepared. Their resistance to fungi was evaluated according to ASTM G 21, LH specification(LHCS 41 40 12), and the newly instituted KS F ISO 21265 test methods. The findings showed that KS F ISO 21265 test method exhibited the superior discriminative capability in assessing fungal resistance when compared to ASTM G 21 and LH specification(LHCS 41 40 12) test methods. Additionally, it was confirmed that oxime curing sealants demonstrated higher fungal resistance than alkoxy curing sealants. Furthermore, The introduction of a condition to assess fungal resistance after 4 weeks of immersion at 50℃ in KS F ISO 21265 is expected to enable long-term fungal resistance evaluation of sealants.

• Journal of Ginseng Research
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• v.14 no.1
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• pp.50-56
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• 1990

Root-rot of ginseng caused by Fusarium solani is one of the most obstacles to ginseng cultivation. We evaluated some inoculating techniques of ginseng with Fusarium solani, for selection of disease resistant breeding lines. The most effective inoculating techniques evaluated were inserting toothpicks colonized by F. solani into the seedling roots in laboratory test and dusting seedlings with vermiculite after dipping in conidial sllspension and then replanting method in field test. The resistance to diseased by F. solani was lines of 82022 and 82066 in laboratory test. 82920-1 and 78093 in field test.

• Journal of Hospice and Palliative Care
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• v.7 no.1
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• pp.8-16
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• 2004

Purpose: The porpose of this descriptive study was grasp the QOL (Quality of Life) of cervix cancer patient and to analysis QOL (Quality of Life) by stage of disease, type of treatment and de me graphic characteristics Methods: Data were collected from 67 patients with cervical cancer from 3 General Hospitals from March 15 to June 4 using The "QOL (Quality of Life)-Cancer Version" inventory made by Ferrell et al (1995). The data were analysed by using SPSS $PC^+$ program including t-test, ANOVA, and Scheffe test. Results: Progressing stage of disease and QOL, the significant between the progressing stage of disease and QOL was significant (F=5.06, P=.003). The degree of difference between the progresstion of the stage of the disease and each item in the test was physical well-being (F=3.97 P=.012), the items of psychological well-being (F=3.91, P=.013), the items of social well-being (F=4.96, P=.004). It show a significant difference, but the item of spiritual well-being (F=1.36, P=.262) was not significant difference. The significance between the type of treatment and QOL was insignificant. The degree of difference between each area of life was the psychological well-being (t=-2.14, P=.037), the social well-being (t=-2.15, P=.036). But the physical well-being (t=-.93, P=.356), the spiritual well-being (t=.73, P=.469) was insignificant. Conclusion: As a result, The QOL of patients with cervical cancer is differentiated by the stage of disease, the type of treatment, and the demographic data. Therefore, there is a need to apply nursing intervention to patients with cervical cancer by considering the stage of disease, the type of treatment, and the demographic data.

• International Journal of Precision Engineering and Manufacturing
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• v.5 no.3
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• pp.54-61
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• 2004

This paper describes the development of a 6-axis robot's finger force/moment sensor, which measures forces $F_x$(x-direction force), $F_y$and $F_z$, and moments $M_x$ (x-direction moment), $M_y$ and $M_z$ simultaneously, for stable grasping of an unknown object. In order to safely grasp an unknown object using the robot's gripper, the force in the gripping direction and the force in the gravity direction should be measured, and the force control should be performed using the measured forces. Also, the moments $M_x$, $M_y$ and $M_z$ to accurately perceive the position of the object in the grippers should be detected. Thus, the robot's gripper should be composed of 6-axis robot's finger force/moment sensor that can measure forces $F_x$, $F_y$ and $F_z$, and moments $M_x$ $M_y$ and $M_z$ simultaneously. In this paper, the 6-axis robot's finger force/moment sensor for measuring forces $F_x$, $F_y$ and $F_z$, and moments $M_x$ $M_y$ and $M_z$ simultaneously was newly modeled using several parallel-plate beams, designed, and fabricated. The characteristic test of the fabricated sensor was performed, and the result shows that interference errors of the developed sensor are less than 3%. Also, Robot's gripper with the 6-axis robot's finger force/moment sensor for the characteristic test of force control was manufactured, and the characteristic test for grasping an unknown object using the sensors was performed using it. The fabricated gripper could grasp an unknown object stably. Thus, the developed 6-axis robot's finger force/moment sensor can be used for robot's gripper.

• The Journal of Advanced Prosthodontics
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• v.15 no.3
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• pp.136-144
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• 2023

PURPOSE. The study objective was to evaluate the influence of the type of resin cement on the flexural strength and load to fracture of two chairside CADCAM materials after aging. MATERIALS AND METHODS. A polymer-infiltrated ceramic network (PICN) and a nanoceramic resin (RNC) were used to produce the specimens. Two types of dual-cure resin cements, a self-adhesive and a universal, were investigated. Bilayer specimens were produced (n = 10) and aged for 6 months in a humid environment before the biaxial flexural strength test (σ_f). Bonded specimens were subjected to a mechanical aging protocol (50 N, 2 Hz, 37℃ water, 500,000 cycles) before the compressive load test (L_f). σ_f and L_f data were analyzed using two-way ANOVA and Tukey tests (α = .05). Chi-square test was used to analyze the relationship between failure mode and experimental group (α = .05). RESULTS. The type of resin cement and the interaction between factors had no effect on the σ_f and L_f of the specimens, while the type of restorative material was significant. RNC had higher σ_f and L_f than PICN. There was a significant association among the type of cracks identified for specimens tested in L_f and the restorative material. CONCLUSION. The type of resin cement had no effect on the flexural strength and load to fracture of the two investigated CAD-CAM chairside materials after aging.