• Journal of Society of Preventive Korean Medicine
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• v.10 no.2
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• pp.11-17
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• 2006

TIn the study of Yangseng(養生) and Relaxation therapy, the results were as follows : According to the traditonal oriental medical theory, Oriental medicine focused on Yangseng(養生). Especially vital-energy is able to resist the disease and adapt to the environment and assist the healing of the body. Relaxation theraphy is a kind of Qigong. And it is not only breathe, but also accumulate the vital energy in the body, Which is also called "genuine qi(眞氣)" or "internal qi(內氣)." The therapy is based on controlling of Sprit(神), Breathing(呼吸), Mind(心). And it is in harmony with Qi-circulation(氣-循環), so smoothing the circulation of meridians, strengthened Essential-material(精), Qi(氣), Sprit(神). The Relaxation theraphy made the body and mind relaxed, and it is helpful of preventation of disease and mental health. And it treats neurosis, somatoform disease, it uses main or helpful therapy of various disease, elevates health mental concentration. And it is more effective by application of music, aroma, taping, psycho-therapy.

• Korean Journal of Oriental Medicine
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• v.18 no.2
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• pp.39-45
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• 2012

Objectives : This study was aimed to analysis the trend of Yangseng(養生) studies in Korean Oriental Medicine and to consider the scope of Yangseng research. Method : We collected 86 articles on Yangseng study result from the OASIS system using the keyword 'Yangseng'. Results : There were Yangseng study papers that were published between 1963 and 2011. Published 21 papers on The Korean Journal of Oriental Preventive Medicine were more than the other journals. Literature studies account for 78% of total studies, whereas clinical studies account for only 22%. Effects of clinical studies was evaluated mainly by survey. Conclusions : High quality experimental studies and intervention studies have not yet been published. It is necessary to research and develop duration of Yangseng effect and tools for evaluating.

• Proceedings of the Korea Concrete Institute Conference
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• 2009.05a
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• pp.481-482
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• 2009

This study analyzed fire resistance characteristics of high strength concrete according to changes in curing method and PP fiber content, and the results are as follows. First in case of standard curing, spalling was prevented at PP fiber content of 0.05 % or higher. Autoclave and steam curing showed prevention of spalling at content of 0.1 % or higher. For residual compressive strength, measurement of strength for plain was impossible due to spalling phenomenon. A satisfactory trend was shown with increase in PP fiber content with the strength of about 30 MPa.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.11a
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• pp.781-784
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• 2008

In this paper, insulating effect and strength development of concrete under low temperature are reported varying curing sheets. According to test results, in temperature -5$^{\circ}$C concrete subject to exposure and air cap condition, result in a frost damage at early age by a fall of below zero temperature. Mean while, the combination of PE film and non-woven fabric maintained around 3 $^{\circ}$C within first 24 hours since placement. For double bubble sheets, concrete temperature maintained above 7$^{\circ}$C due to its excellent heat insulating capability. As a result of core strength test, strength of specimens cured with viny + non-woven fabric and double bubble sheets had higher strength than strength of other specimens due to good heat insulation effect at early age.

• Applied Chemistry for Engineering
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• v.26 no.6
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• pp.692-697
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• 2015

In this study, the reduction efficiencies of leachate heavy metal levels were investigated by adding $Al_2O_3$ and CaO to the bottom ash to observe their effects on the heavy metals leachate reduction efficiency. The ratio of $Al_2O_3$ and CaO contents were varied by 10~40% (W/W) alongside different curing time of 7 and 28 days. The reduction efficiencies of leachate heavy metal levels were estimated to be 69.3% for Cu and 52.1% for Pb during the curing time of 7 days. For the curing time of 28 days, the efficiencies changed to 85.2 and 100% for Cu and Pb, respectively. It was thus confirmed that the high reduction efficiency could be obtained as the curing time increased.

• Journal of Korean Academy of Nursing
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• v.34 no.5
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• pp.729-738
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• 2004

Purpose: 'Yangsaeng' is a traditional health care regimen for the promotion of health and prevention of illnesses ty means of specific principles and methods for the purpose of living a long and healthy life. The purpose of this paper was to develop a tool in measuring Yangsaeng and to verify its reliability and validity. Method: Content validity was conducted three times by 8 experts. Factor analysis was conducted to test its construct validity. Result: Thirty-one items were selected in 8 factors; Morality Yangsaeng, Mind Yangsaeng, Diet Yangsaeng, Activity & rest Yangsaeng, Exercise Yangsaeng, Seasonal Yangsaeng, Sleep Yangsaeng and Sex life Yangsaeng. The explanatory variance is 61.76%. Cronbach's alpha of the final tool is .89 and that of each factor is .68～.82. The analysis of the items shows that the item-total correlation is .40 or higher. Criterion-related validity was verified with the CMCHS V1.0 and the KoHSME V1.0. Conclusion: Since the tool developed in this study was verified in terms of its reliability and validity, it could be utilized as a tool for evaluating the extent of Yangsaeng.

• Journal of the Korea Institute of Building Construction
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• v.21 no.2
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• pp.97-104
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• 2021

This study aims to develop non-sintered cement that can replace the Portland cement by utilizing industrial by-products. As a suggestion, the physical properties of non-sintered cement mortar depending on the curing method were investigated with ground granulated blast furnace slag, class C fly ash, and class F fly ash. As a result of the study, it was found that the strength performance and absorption rate were improved through the heat treatment process after steam curing. It was confirmed through crystal phase analysis that the hydration was accelerated after heat treatment, and the bonding material formed a dense internal structure.

• Journal of the Korea Concrete Institute
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• v.16 no.5 s.83
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• pp.645-650
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• 2004

As time passes, bridge structures require extension work on bridge in use from various effects such as social economical, or traffic environment change. When the concrete is poured at the connection of extension work initial curing concrete is influenced by vibration of vehicles that are passing through the old bridge superstructure. Concrete at early curing stage in construction site should be properly protected, enough to have established sufficient integrity to withstand outside vibration, impact etc. Currently there is no standard specification or regulation in our country. In this paper, experimental variables were divided by vibration velocity and time of loading, and concrete compressive strength and bond strength were measured.

• Journal of Society of Preventive Korean Medicine
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• v.24 no.1
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• pp.15-25
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• 2020

Objective : The purpose of this study was to analyze the frequency and contents of each 'Yangseng(養生)' category appeared in 『The Annals of Joseon Dynasty』, based on the Yangseng-related terms used in the records. Method : We selected 11 terms with the same meaning as 'Yangseng(養生)' and searched each of them on the website of the Annals of Joseon Dynasty online search service. Among the total of 679 records, 343 were classified into five categories: 'Mind Yangseng(精神養生)', 'Food Yangseng(飮食養生)', 'Doin-angyo(導引按蹻)', 'Lifestyle Yangseng(生活養生)', and 'Herb Yangseng(藥草養生)'. The contents and characteristics of each Yangseng category appeared in the 『The Annals of Joseon Dynasty』 were studied. Results : The term 'Jo-seop(調攝)' was most frequently used in the same meaning as Yangseng(養生), followed by 'Jo-ri(調理)', 'Jo-ho(調護)', 'Jo-yang(調養)', and 'Seop-yang(攝養)'. The frequency of records categorized into specific Yangseng methods(養生法) was in the order of 'Lifestyle Yangseng', 'Mind Yangseng', 'Food Yangseng', 'Herb Yangseng' and 'Doin-angyo(導引按蹻)'. The contents of 'Mind Yangseng' included 'control of emotions and thoughts', 'control of self-interest', 'emphasis on the cultivation of mind', and 'avoidance of stress'. The contents of 'Food Yangseng' were related to the amount of food intake and types of food. The contents of 'Lifestyle Yangseng' were related to 'work-rest balance(勞逸)', 'seasons(季節)', 'residence(居處)', 'bath(沐浴)', 'sexual life', 'sleep', and 'clothing'. The frequency of 'work-rest balance(勞逸)' was among the highest. Conclusion : Emphasis on mental health and work-rest balance appeared in 『The Annals of the Joseon Dynasty』 can have significant implications on people of today.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.23 no.3
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• pp.152-160
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• 2013

The purpose of this study is to enhance the mechanical strength of specimens containing fly ash from fluidized bed type boiler, which the recycling rate will be eventually increased. Specimens containing fly ash in a certain portion were made and aged for 3, 14, and 28 days. Specimens were carbonated under the supercritical condition at $40^{\circ}C$. The carbonation process under the supercritical condition was performed to enhance the mechanical property of specimens by filling the voids and cracks existing inside cement specimen with $CaCO_3$ reactants. The additional aging effect after the supercritical carbonation process on mechanical strength of specimens was also investigated by comparing the compressive strength with and without 7 day extra aging. Under the supercritical condition and additional 7 day aging specimens were very effective for enhancement of mechanical strength and compressive strength increased by 44 %.