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강병조,임완빈,김승팔 大韓神經精神醫學會 1986 신경정신의학 Vol.25 No.4
The study was designed to investigate the anxious and depressive trends in the wives of alcoholic patients. For the purpose of assessment of anxiety and depression, Zung's self-rating anxiety-(SAS) and depression scales (SDS) were applied to the fifty wives of alcoholics, the latter were admitted to the psychiatric wards of Taegu Catholic Hosp. and Kyungpook National Univ. Hosp. from Jan 1 '84 to Sep. 30 '85 and were diagnosed according to DSM- criteria. And the two scales were also applied to the fifty wives of social drinkers as a control group. The results were as follows; 1) The mean SAS scores were 53.06±9.66 in the wives of alcoholics and 38.64±8.75 in the control group and so the difference was significant in anxious trends (p<0.01) between two groups. 2) The mean SDS scores were 54.00±10.20 in the wives of alcoholics and 42.64±7.80 in the control group and so the difference was significant in depressive trends (p<0.01) too between two groups. 3) As for the frequency order of the SAS items in the wives of alcoholics, they were apprehension, insomnia, restlessness and fear. As for the frequency order of the SDS items in the wives of alcoholics, they were confusion, decreased libido, decreased appetite and psychomotor retardation. 4) As for the wife's attitude toward her husband, nagging and interfering attitude was commonest(46%) in the wives of alcoholics in contrast to the gentle and tender attitude(48%) in the wives of social drinkers. 5) 62% of wives of alcoholics were dissatisfied with their sexual life but the degree of dissatisfaction was low to 8% in the wives of social drinkers.
노일호,김병완,정광조,曺政孝,黃相畯,吳旼錫 대전대학교 한의학연구소 2003 한의학연구소 논문집 Vol.12 No.1
This study is about the relationship between the effect of Radiating Qui Therapy on human body and the resulting subjective qui sensation. Patients were between 30 and 50 years of age. n=21 persons received DITI (n=14 patients were provided, n=9 control group) twice examination with Radiating Qui Therapy. First all patients were examined by DITI. After treatment with Radiating Qui Therapy (n=14) both the treated and the control groups were eaxmined again. Radiating Qui Therapy is provided upright position. After Radiating Qui Therapy 92% of the treated group felt a significant qui sensation and 43.5 % felt a warmth at the abdomen and over the whole body. A data of this study show Radiating Qui Therapy has s stimulating effect on human skin temperature. As disease region and Qui sensation are very closely related to each other results strongly suggest that Radiating Qui Therapy could be used as a treatment for a several disease.
아미노산 투여가 운동중 싸이클선수의 젖산 및 심박수에 미치는 영향
이승국,유병렬,김문희,김완조,이선장 韓國體育大學校附屬 體育科學硏究所 1992 韓國體育大學校附屬 體育科學硏究所論文集 Vol.11 No.1
The purpose of the study was to determine whether a 15.6mg.Kg ??' does of glutamate given one hour prior to incremental exercise test would reduce the lactate formation. Five well trained cyclists served as subjects in this experiment which included a placebo and glutamate trial. The subjects initially work on treadmill 200m/min for 3 minutes and here increased the workload by 20m/min every 3minutes until exhaustion. Blood lactate were collected from finger-tip. Subjects in the glutamate trial showed significantly lower lactate formation during exercise then they did in the placebo trial. In both groups no significant difference was found on heart rate. During the recovery lactate and heart, rate were unaltered in either the glutamate or placebo trials. In summary, glutamate ingestion may reduce lactate formation resultly improvement of performance.
김원,최유성,이태양,최재곤,홍완해,조병욱 조선대학교 생산기술연구소 2003 生産技術硏究 Vol.25 No.1
This study explores the potential of improving the physical properties of poly(trimethylene terephthalate) (PTT) by inducing thermotropic liquid crystalline polymers. The TLCP was synthesized by polycondensation reaction of terephthaloyl chloride with corresponding diols. The TLCP used was copolymers containing random PTT groups on the polymer backbone. The PTT moieties were used to increse compatibility between the PTT and the TLCP. The TLCP showed the nematic phase above those melting temperature(T_m) The TLCP seems to act as plasticizers and nucleating agents in the matrix polymers Liquid crystalline phase did not reaveal any significant macrophase separation and thermal degradaton under the temperature of processing condition.
Investigation of corrosion assessment of hydrogen-rich water based cement mortars
Byung-Wan Jo 한양대학교 세라믹연구소 2017 Journal of Ceramic Processing Research Vol.18 No.4
This study primarily investigates the effects of hydrogen-rich water (HRW) on the rebar corrosion embedded in Portlandcement mortars. We comparatively assessed the performances of reinforced HRW-based mortars (HWMs) with respect tocement mortars fabricated from control water (CWM). The results indicate that the use of HRW significantly improves theanticorrosion properties of rebars embedded in cement mortars. Lower electronegative corrosion potential and the galvaniccurrent were observed in HWMs compared to CWM. The electrical resistivity (ER) of HWMs was observed to be higher thanthose of CWM. Moreover, the HRW reduces the setting times and improves mechanical properties. The generally improvedmechanical and anti-corrosion properties of HWMs are attributed to the formation of more cement hydrates with fewer voidsin the hydrogen-rich environment. Based on X-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanningelectron microscope (SEM) analyses it was deduced that the use of HRW in Portland cement mortars produces a morecompact, dense, and durable microstructure with fewer voids due to a higher degree of hydration. The higher degree ofhydration in HRW leads to precipitation of greater amount of cement hydrates especially calcium hydroxide (Ca(OH)2) whichhelps maintain passive condition for reinforced bars.
A Review of Advanced Bridge Inspection Technologies Based on Robotic Systems and Image Processing
Jo, Byung-Wan,Lee, Yun-Sung,Kim, Jung-Hoon,Yoon, Kwang-Won The Korea Contents Association 2018 International Journal of Contents Vol.14 No.3
To ensure safety of bridges, it is critical to inspect and assess physical and functional conditions regularly. Presently, most highway bridges in the U.S. are inspected visually. However, this method of inspection is often influenced by the bridge inspector's knowledge and experience. So, reliability and accuracy of inspection results may be problematic. To solve such problems, an extensive number of robotics systems and image processing techniques for bridge inspection methods have been proposed. These robotics systems and image processing techniques are used to measure various bridge conditions, such as apparent damage, displacement and dynamic characteristics. This paper provides a comprehensive review of robotics systems and image processing technologies used in bridge inspection.
Byung-Wan Jo 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.S1
This paper presents the results of experimental investigation carried out to assess the effect of crystalline admixture-a self healing admixture (SHA) on the physical and mechanical properties of mortars. Crystalline admixture (CA) totaling 3% by weight of cement was added into cements and lime mortars. The porosity and water absorption capacity was significantly reduced for mortars with SHA. An overall improvement in compressive and flexural strength was observed with the inclusion of SHA. An increase in modulus of elasticity and reduction in brittleness factor was observed for mortars with SHA. Effect of sand gradation was also found prominent on physical and mechanical properties of mortars.
Byung-Wan Jo,Sumit Chakraborty,Ji Sun Choi,Jun Ho Jo 한국콘크리트학회 2016 International Journal of Concrete Structures and M Vol.10 No.1
With the aim to reduce the atmospheric CO₂, utilization of the carbonated lime produced from the aqueous carbonation reaction for the synthesis of a cementitious material would be a promising approach. The present investigation deals with the aqueous carbonation of slaked lime, followed by hydrothermal synthesis of a cementitious material utilizing the carbonated lime, silica fume, and hydrated alumina. In this study, the aqueous carbonation reaction was performed under four different conditions. The TGA, FESEM, and XRD analysis of the carbonated product obtained from the four different reaction conditions was performed to evaluate the efficacy of the reaction conditions used for the production of the carbonated lime. Additionally, the performance of the cementitious material was verified analyzing the physical characteristics, mechanical property and setting time. Based on the results, it is demonstrated that the material produced by the hydrothermal method possesses the cementing ability. Additionally, it is revealed that the mortar prepared using the alternative cementitious material yields 33.8 ± 1.3 MPa compressive strength. Finally, a plausible reaction scheme has been proposed to explain the overall performances of the aqueous carbonation as well as the hydrothermal synthesis of the cementitious material.