• Journal of the Korean Vacuum Society
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• v.7 no.s1
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• pp.30-36
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• 1998

The plasma-spray technique is currently the most frequently used method to produce calcium phosphate coatings. Hydroxyapatite(HAp), one form of calcium phosphate, is preferred by its ability to form a direct bond with living bone, resulting in improvements of implant fixation and faster bone healing. Recently, concerns have been raised regarding the viable use and long-term stability of plasma-spray HAp coatings due to its nature of comparatively thick, porous, and poor bonding strength to metal implants. Thin layers (maximum of few microns) of calcium phosphate were formed by an e-beam evaporation with and without ion bombardments. The Ca/P ration of film was controlled by either using the evaporants having the different ration of Ca/P with addition of CaO, or adjusting the ion beam assist current. The Ca/P ration had great effects on the structure formation after heat treatment and the dissolution bahavior. The calcium phosphate films produced by IBAD exhibited high adhesion strength.

• Journal of the Daesoon Academy of Sciences
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• v.20
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• pp.273-315
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• 2009

The purpose of this study is to examine the mutual similarities between DaesoonJinri(大巡眞理) and Taoism thought as well as the thought mechanism of DaesoonJinri based on contents of the four tenets of DaesoonJinri (EumYangHapDeok(陰陽合德), SinInJoHwa(神人調化), HaeWonSangSaeng(解冤相生), DoTongJinGyeong(道通眞境)). DaesoonJinri attached a lot of importance to Taoism among traditional thought such as Confucianism, Buddhism, Taoism. This study will check out the clues from the major texts of Taoism. To do this, this study kept an aye on the Taoism texts such as Laozi, Zhuangzi, Taipingjing, etc. The significant implication of this study is only contextual similarities between DaesoonJinri and Taoism Philosophy. Therefore, this study will provide the preliminary data to researcher searching for the directly ideological contact point between DaesoonJinri and Taoism thought.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2005.11a
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• pp.227-229
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• 2005

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2004.11a
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• pp.149-150
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• 2004

• Proceedings of the Korean Ceranic Society Conference
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• 2003.04a
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• pp.132.1-132
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• 2003

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2017.10a
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• pp.209-210
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• 2017

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.6
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• pp.1543-1547
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• 2004

In this study, symptoms, pathologies, compositions and clinical applications of 52 prescriptions for woman-related disease treatment descripted in Bang Yahk Hap Peun were investigated. The results were same as following; Classification of prescriptions for woman-related disease treatments was 23 prescriptions in high-chepter, prescriptions in 16 medium-chepter, and prescriptions in 13 low-chepter prescriptions and the frequency of clinical applications for high-chepter, medium-chepter and low-chepter prescriptions was 44%, 31% and 25%, respectively. Clinical applications of woman-related disease prescriptions were identified aocording to pre-pregnancy and post-birth, uterus, breast disease, before pregnancy. Infertile, emmeniopathy, uterus Blooding made practical application to high frequency in the treatments. Oriental Medical Pathology applied with prescriptions were Biheo(脾虛), Ganbinoyool(肝脾怒鬱), Infirmity(虛弱), 熱入血室, Jungpung(中風), Gihyulguheo(氣血俱虛), hyulheo(血虛), Aeohyul(瘀血) etc. Prescriptions applied with the most frequency in woman-related disease were Samuoltang(四物湯), Sagunjatang(四君子湯), Gungkuitang(芎歸湯), Boanbaekchuolsan(保安白朮散), Dangguibohyeltang(當歸補血湯), Sanhyointang(酸棗仁湯), Dohongsamuoltang(桃紅四物湯), Jipeisan(芷貝散), Silsosan(失笑散).

• Journal of the Korean Society of Physical Medicine
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• v.12 no.1
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• pp.15-24
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• 2017

PURPOSE: The purpose of this study was to investigate the effects of supplementary verbal encouragement according to the gender on the activation of abdominal muscles during performance of crunch exercise in healthy subjects. METHODS: A Total of 32 healthy subjects (15 male and 17 female) were randomly allocated to two conditions, crunch exercise with Ki-hap and verbal encouragement with same gender (CKVS) and crunch exercise with Ki-hap and verbal encouragement with different gender (CKVD). The interventions were conducted over three trials in each condition, and measurements were performed on each subject by one examiner in three trials. The activation of rectus abdominis, external oblique, internal oblique, and transverse abdominis muscles were evaluated using electromyography (EMG) during performance of crunch exercise with Ki-hap and verbal encouragement with same gender or different gender, respectively. RESULTS: The results showed that there were no significantly difference in the activation of all abdominal muscles in those of the CKVS compared with the CKVD (p>.05). The results also showed that there were no significantly difference in the ratio of muscle activation at global muscle to that at local muscle between two conditions (p>.05). CONCLUSION: These findings demonstrated that application of the supplementary verbal encouragement by gender does not affect to activate the abdominal muscles of subject to perform a movement, at the same time, it would suggest positive evidence for improving activation of abdominal muscles.

• Journal of Powder Materials
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• v.20 no.5
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• pp.376-381
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• 2013

Spherical Ti-6Al-4V powders in the size range of 250 and 300 ${\mu}m$ were uniformly doped with nano-sized hydroxyapatite (HAp) powders by Spex milling process. A single pulse of 0.75-2.0 kJ/0.7 g of the Ti-6Al-4V powders doped with HAp from 300 mF capacitor was applied to produce fully porous and porous-surfaced Ti-6Al-4V implant compact by electro-discharge-sintering (EDS). The solid core was automatically formed in the center of the compact after discharge and porous layer consisted of particles connected in three dimensions by necks. The solid core increased with an increase in input energy. The compressive yield strength was in a range of 41 to 215 MPa and significantly depended on input energy. X-ray photoelectron spectroscopy and energy dispersive x-ray spectrometer were used to investigate the surface characteristics of the Ti-6Al-4V compact. Ti and O were the main constituents, with smaller amount of Ca and P. It was thus concluded that the porous-surfaced Ti-6Al-4V implant compacts doped with HAp can be efficiently produced by manipulating the milling and electro-discharge-sintering processes.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.319-319
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• 2011

Hydrolysis of sodium borohydride provides a safe and clean approach to hydrogen generation. Having the proper catalytic support for controlling this reaction is therefore a valuable technology. Here we demonstrate the capability of hydroxyapatite as a novel catalytic support material for hydrogen generation. Aside from being inexpensive and durable, we reveal that Ru ion exchange on the HAP surface provides a highly active support for sodium borohydride hydrolysis, exemplifying a high total turnover number of nearly 24,000 mol $H_2$/ mol Ru. Moreover, we observe that the RuHAP support exhibits a high catalytic lifetime of approximately one month upon repeated exposure to $NaBH_4$ solutions. In addition to examining surface area effects, we also identified the role of complex surface morphology in enhancing hydrolysis by the catalytic transition metal covered surface. Particularly, we found that a polycrystalline RuHAP catalytic support exhibits shorter induction times for the initial bubble formation as well as increased hydrogen generation rates as compared to a single crystal supports. The independent factor of a complex surface morphology is believed to provide enhanced sites for gas release during the initial stages of the reaction. By demonstrating the ability to shorten induction time and enhance catalytic activity through changes in surface morphology and Ru content, we find it feasible to further explore this catalyst support in the construction of a practical hydrogen generator.