• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.26 no.1
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• pp.74-81
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• 2017

A crane is typically used as a means to lift and load equipment or materials. A surface vessel uses a towed object for underwater activity. Such a mechanism for dropping and lifting of equipment is necessary, and is called an overboarding unit. The present study is focused on the overboarding unit used for a crane structure. This paper deals with new overboarding mechanism design and GA-based $MATLAB^{(R)}$ optimization. By using a quadrilateral link mechanism, it is possible to set the constraint function for optimizing the GA method. The optimization with $MATLAB^{(R)}$ is followed by the $SolidWorks^{(R)}$ simulation and verification. When applying the proposed mechanism, the operator is expected to have a big advantage in safety and efficiency of operations. Furthermore, the technology developed in this study will be helpful in similar circumstances and in the proposed mechanism.

• Clinics in Shoulder and Elbow
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• v.5 no.2
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• pp.102-109
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• 2002

Purpose: To evaluate the results of the treatment of the supracondylar fractures of the humerus according to the fixation methods in adults Materials and Methods: Seven patients, aged 55 to 52 years (average,69 years), were reviewed after a mean follow-up of 37 months (range, 11-65 months). According to AO classification all fractures were classified as type A2 (simple transverse supracondylar fracture). Six patients underwent closed reduction and one patient, open reduction after failure of closed reduction. Percutaneous fixation with cannulated screws was performed to the 4 patients, per- cuta)leous fixation with Kirschner wires in 3 patients. All except one patients have associated medical problems. The results were assessed based on the Mayo Elbow Performance Score. Results: All the patients with cannulated screw fixation had stable bony union with excellent ranges of motion (mean: 5-125 degrees). All the three patients who received percuatnaous smooth K-wire fixation had nonunion with poor results, one of them had changed into cannulated screw. and then had good result. Conclusion: Although simple supracondylar fracture is similar to the pediatric fracture in nature, it should be firmly fixed with the method such as threaded cannualted screw rather than the simple fixation with K-wires.

• Textile Coloration and Finishing
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• v.29 no.4
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• pp.284-290
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• 2017

The glyoxal has been used as formaldehyde free DP(durable press) agents in wrinkle free treatment for cotton fabrics. However, the yellowing problem is a disadvantage of DP finishing process for cotton fabrics with glyoxal. In order to improve the whiteness, it was investigated that the effect of coreactant and treatment method with various whitening additives such as STB(sodium tetraborate, $Na_2B_4O_7$), SPB(sodium perborate, $NaBO_3$), SC(sodium chlorite, $NaClO_2$) and SPC(sodium percarbonate, $Na_2CO_3{\cdot}1.5$ $H_2O_2$). The increasing the concentration of whitening additives(STB, SPB, SC and SPC), the whiteness and the strength retention ratio of cotton fabrics were increased but the wrinkle recovery angles were decreased in one bath method. It was not suitable to improve whiteness because the whiteness value is about 60. In the case of SC used two bath method, the whiteness is near 70, which is similar to untreated fabrics, without decreasing of WRA and strength.

• Journal of the Korean Society for Heat Treatment
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• v.33 no.4
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• pp.161-172
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• 2020

The tensile property of A5082 and A6060 aluminium wrought alloys was investigated, in terms of the strain rate sensitivity on alloy conditions by heat treatment and bake hardenability on pre-strain prior to strain ageing. The tensile test was carried out in a range of strain rate of 4.17 × 10^-5 s^-1 ~ 4.17 × 10^-5 s^-1 in room temperature and the nominal range of pre-strain was 3.0 ~ 10.5%. The tensile deformation of A5082 alloys is characterized as typical case of dynamic strain ageing with negative strain rate sensitivity for all conditions, and the tensile strength indicates a similar level regardless of alloy conditions, except only in full annealed condition. The stress-relief annealing on A6060 alloys can induce practical decrease in strength level of over approximately 100 MPa without any ductility loss, compared to as-rolled condition, while a full annealed and aged condition leads remarkable strengthening effect with the decrease of tensile elongation. Additionally, the bake hardenability of A5082 alloy by strain ageing indicates a negative dependence upon the increase of pre-strain, while A6060 alloy exhibits a positive sign even in low level relatively compared with conventional SPCC.

• Archives of Reconstructive Microsurgery
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• v.22 no.2
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• pp.57-62
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• 2013

Purpose: The aim of this study is to report on the results and discuss the role of free flap followed by ipsilateral vascularized fibular transposition (IVFT) for reconstruction of large bone and soft tissue defect combined with infection by open tibia fracture. Materials and Methods: During the research period, lasting from December 2002 to June 2008 (Kyung Hee University Medical Center), data were collected from three patients who underwent IVFT after free flap. We analyzed the successiveness and persistency of the infection using free flapping, bone union, and hypertrophy between transposed fibula and tibia. Results: Regarding free flap, successive results were observed in all examples. In the final follow-up results, transposed fibulas all survived, having hypertrophy similar to that of adjacent tibia. Conclusion: Reconstruction of tibia defect with free flap followed by IVTF is a useful and safe method for avoidance of the potential risk of infection for patients with a large tibial bone defect and soft tissue defect associated with infection.

• Journal of the Korean Society for Library and Information Science
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• v.26
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• pp.235-256
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• 1994

The purpose of this paper is to review concerns and activities related to the library of Germany as well as to look over recent trends referred to the maintenance of the library and its information service system since the unification of Germany in 1990. In fact, since the unification, many libraries in old East Germany have been closed with some precious books being lost. Also since most of libraries are short of funds and proper materials, it is real situation that they can not actively respond to the demand of information by library users who want to adapt themselves to changes, while only urgently requesting some support from old West Germany. In the meantime, the new government and libraries of Germany are giving a great effort to building an efficient document delivery system through financial support for the expansion of books and the purchase of urgently necessary library equipments in the poor libraries of old East Germany and support for the course to re-educate the in-service or unemployeed librarians, and also systematic organization between similar libraries, integration of national bibliographies, and maintenance of the interlibrary loan system. The nationwide interlibrary loan system, an expanded form of the system of old West Germany, allows the delivery of document to be easily performed, centered on both central cataloues for East Germany and West. However, in order to build an efficient information service system which covers whole Germany, it seems there needs more time required.

• The Journal of Korean Medical History
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• v.27 no.2
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• pp.85-98
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• 2014

The medical bureaucrats was awarded by Wonjong (原從) meritorious retainer were 376 peoples in the Joseon Dynasty. It was not done research on this is accurate so far. Why did they get Wonjong (原從) meritorious retainer? I have found a general rule of the investiture through review of the nokhundogamuigwe (錄勳都監儀軌). The Sillok(實錄) and other materials were used as an adjunct in the investigation. Through the analysis of this medical bureaucrats, This study aims to investigate the change in the social status of the Joseon Dynasty's medical officials. The conclusion of this paper is as follows. First, the social status of medical bureaucrat was similar to that of yangban (兩班) in early days of Joseon Dynasty compared with mid or late days of Joseon Dynasty. Second, bastard households are concentrated in the second half of the 16th century to the early 17th century to advance to the medical officials. Third, acupuncture doctors increased social status by the mid-Joseon Dynasty. Fourth, statutes about Wonjong (原從) meritorious retainer was raising the social status of medical bureaucrat compared to other technical officials.

• The Korean Journal of Food And Nutrition
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• v.28 no.1
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• pp.1-8
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• 2015

This study was designed to determine the antioxidant activity of solvent fractions of broccoli sprouts grown by controlling the growing environment at the plant factory system. Fractionation was achieved with chloroform, n-hexane, ethyl acetate, butanol, water by 70% EtOH extract of the broccoli sprouts. Each solvent fraction was put through TLC and HPLC to separate active components. Higher antioxidant activities were observed for the butanol and ethyl acetate layers. Further evaluation of each of the 5 layers (LH1 to LH5) of the butanol fraction showed that the refined LH3 extract had a high antioxidant effect. Components with similar Rf values from TLC had the same retention times and peaks in the HPLC analysis. It was also determined that the sulforaphane content was high at the chloroform and butanol layers and the sulforaphane was responsible for, the high antioxidant activity. Thus, to use for functional materials, the butanol extract/layer of broccoli sprouts is recommended as the most effective.

• Fire Science and Engineering
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• v.16 no.1
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• pp.51-59
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• 2002

Manifold physical properties of PASCON cable trough were evaluated, and its suitability of domestic test for flammability of plastic materials was examined. Particularly, suitability of PASCON material was investigated through study on the legal propriety of PASCON cable trough used for highspeed rail line and on a fire safety. As results, domestic test for flammability of PASCON cable trough material(KS M3015) was similar to UL 94 flammability testing and from the test outstanding capability of PASCON cable trough material was proved. Besides, possibility of fire enlargement would be very low in case of fire in PASCON cable trough installed around train express. Also, fire safety of PASCON cable trough was shown to be credible.

• Fire Science and Engineering
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• v.17 no.2
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• pp.17-24
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• 2003

Thermal effects and characteristics of heat release for electrical wire installed in pascon and concrete trough have been theoretically approached and studied in consideration of the structure of products. The points of difference between two troughs have been evaluated by theoretical approach and estimated by computer simulation in similar condition of institution environment. As a result, the average of the intrinsic thermal conductivity of concrete trough is superiority to pascon trough considering only for characteristic of materials. But when considering for institution environment (thickness, area and trough structure etc) as the results of the calculation and computer simulation using FLUENT, the degree of heat release for pascon trough is of advantage to concrete trough.