• 대한원격탐사학회지
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• 제22권1호
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• pp.11-24
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• 2006

Coastal sea surface temperature (CSST) and meteorological data from January through December 1995 are used to estimate the net surface heat flux and heat content for Sendai Bay. The average annual surface heat flux in the area north of the bay is estimated to be $+35Wm^{-2}$, whereas the southwestern area is estimated to be $+56Wm^{-2}$. Therefore, the net surface heat flux shows a net gain of heat over the whole bay. The largest heat gain occurs near Matsukawaura, where the strong Kuroshio/Oyashio interaction produces anomalously cold SST and wind is more moderate than in other regions of Sendai Bay over most of the year. The lowest heat gain occurs around Tashiro Island, where the temperature difference between air and sea surface is lower and wind is stronger. The heat budget shows that both surface forcing and horizontal advection are potentially important contributors to the seasonal evolution of CSST in the bay. From the A VHRR and SeaWiFS data, it is found that offshore conditions between the bay and Eno Island are different due to the presence of the Ojika Peninsula. It is also shown that the temporal behaviors of SSTs in the bay are closely connected with the air-sea heat flux and offshore conditions.

• 동의생리병리학회지
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• 제26권3호
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• pp.265-272
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• 2012

The applicability of Diabetes Mellitus(DM) in Oriental Medicine might be placed under the category in Wasting-thirst(消渴, WT). However, because of WT having so various concepts, classification, and names in Oriental Medicine, this resulted in confusion in applying WT treatment to DM. WT occurs mainly due to dryness-heat(燥熱) which by depleting 'Fluid and Humor'(津液) makes symptoms of thirst(口渴) swift digestion with rapid hungering(消穀善饑) frequent urination(小便頻數) according to the "Internal Classic"(內經). WT was also called Sodan(消癉), Bidan(脾癉), or Sojoong(消中) in the "Internal Classic", which was caused by not only the disorder of 'five viscera' (五臟), but also the failure of 'three yin and three yang'(三陰三陽). However, the doctors of those days had a tendency to manage WT (including DM) with herbal drugs of dryness-heat or with drugs that recover the pancreas and the kidney, that have a tendency to appreciate that WT is the disease of 'five viscera'(五臟). Accoding to the "Internal Classic"(內經) and "Jinguiyaolue"(金匱要略), WT was appreciated that WT is also due to the disorder of Meridian including 'three yin and three yang'(三陰三陽) theory. Disorder of 'yang brightness'(陽明) or 'reverting yin'(厥陰) would cause Wasting-thirst(消渴), so the 'three yin and three yang'(三陰三陽) theory should be considered in WT treatments. Furthermore, 'yang brightness'(陽明) and 'reverting yin'(厥陰) all belong to 'the door'(闔) in the bolt-door-pivot(關闔樞) theory, and the mean of 'the door'(闔) is the function of storage, so we could understood WT is the wasting disease due to the disorder of 'the door'(闔) system in Meridian. WT should also be understood by the point of the bolt-door-pivot(關闔樞) theory in addition to the 'three yin and three yang'(三陰三陽) theory.

• International Journal of Concrete Structures and Materials
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• 제10권1호
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• pp.47-60
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• 2016

The objective of this study was to evaluate the capability of different strength-maturity models to account for the effect of the hydration heat on the in-place strength development of high-strength concrete specifically developed for nuclear facility structures under various ambient curing temperatures. To simulate the primary containment-vessel of a nuclear reactor, three 1200-mm-thick wall specimens were prepared and stored under isothermal conditions of approximately $5^{\circ}C$ (cold temperature), $20^{\circ}C$ (reference temperature), and $35^{\circ}C$ (hot temperature). The in situ compressive strengths of the mock-up walls were measured using cores drilled from the walls and compared with strengths estimated from various strength-maturity models considering the internal temperature rise owing to the hydration heat. The test results showed the initial apparent activation energies at the hardening phase were approximately 2 times higher than the apparent activation energies until the final setting. The differences between core strengths and field-cured cylinder strengths became more notable at early ages and with the decrease in the ambient curing temperature. The strength-maturity model proposed by Yang provides better reliability in estimating in situ strength of concrete than that of Kim et al. and Pinto and Schindler.

• 동의생리병리학회지
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• 제20권5호
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• pp.1135-1148
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• 2006

The effect of heat on the cancer have been keen since ancient orint medic. Quantitative biologic techniques were applied to the investigation of heat, and the resulting studies have defined a firm rationale for the expectation that hypertherima will be useful in the treatment of cancer. This promise led to activity in developing physical means to produce and measure hyperthermia in patients. Hyperthermic treatments for cancer are grouped into two categories according two the amount of tissue bing heated during the treatments. The categories commonly used are localized, regional, and whole body hyperthermia. Hyperthermia is a situation referring to yang-heat. In orient medic, It refers to vital-qi and the driving force of life activities. Our paper reviewed the present state of the the hyperthemia, outline some major impediments to progress at this time, and suggest researching approches in order to define the role of hyperthermia in the treatment of cancer.

• 한국가구학회지
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• 제19권3호
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• pp.156-162
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• 2008

Three major domestic softwoods, Korean red pine, Korean pine and larch, were heat-treated at $220^{\circ}C$ and for various treatment times for color changing. A new heat treatment equipment was developed for this study and was revealed working well for changing the colors of the three softwoods. The color difference index of 15 was obtained after 8 hours for Korean red pine and Korean pine, and 10 hours for Larch. The correlations of brightness, redness and yellowness with treatment time were different between species.

• 연구논문집
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• 통권28호
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• pp.137-143
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• 1998

In the case of a boiler, scale is made in the tube by the chemical reactions of Ca and Mg ions contained in the water, and heat transfer rate is reduced because of increasement of heat resistance in the pipe of the heat flow. Thus it brings to reduce the energy efficiency and to make environmental pollution by the use of chemicals for the prevention and removement of scale. In this paper, we discussed the design of electronic generator for dual ultrasonic transmitters and analyzed the effect of scale prevention by ultrasound.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.153-154
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• 2020

The purpose of this paper is to examine the characteristics of heat and hydration of concrete according to formwork materials. As a result of the experiment, it was found that there were no problems such as concrete heat loss and delay in hydration reaction due to the use of synthetic resin formwork.

• Journal of Advanced Marine Engineering and Technology
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• 제29권6호
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• pp.685-691
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• 2005

In this study, high performance waste heat recovery heat exchanger was developed using the bayonet tube with spiral serrated fins. Especially, heat exchanger of the bayonet tube type was operated well because of double water passes mechanism and characteristics. A cooling water Passes down inner tubes to thimble-form tubes, then flows back up as it boils. The heat exchanger of bayonet tube type was composed of steel tube with 7channels$(I.D_1\;14mm.\;I.D_2\;31.6mm)$ and spiral serrated fins. The performance tests were conducted under the following conditions A cooling water flow rate was 273kg/h and engine l·pm was varied from 750rpm to 3500 rpm. From the experimental result. waste heat recovery was 9.21kW when engine rpm was 3500. and pressure drop was $15\~260mmHg/m^3$ The effectiveness of heat exchanger was about /$0.7\~0.9$. The performance of heat exchanger was evaluated by using the $\varepsilon-NTU$ method. In the study the NTU of the heat exchanger was $1.57\~2.33$.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.2890-2895
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• 2007

Heat transfer on two identical nearby circular cylinders immersed in the uniform cross flow at Re = 100 and Pr = 7.0 was numerically studied. We consider all possible arrangements of the two circular cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of heat transfer are noticed depending on how the two circular cylinders are positioned, resulting in quantitative changes of heat transfer coefficients on both cylinders. Collecting all the numerical results obtained, we propose a contour diagram for averaged Nusselt number for each of the two cylinders. The perfect geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate heat transfer rates on two identical circular cylinders arbitrarily positioned in physical space with respect to the main flow direction.

• 한국전산유체공학회지
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• 제13권2호
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• pp.42-47
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• 2008

Heat transfer on two identical nearby circular cylinders immersed in the uniform cross flow at Re=120 and Pr=0.7 was numerically studied. We consider all possible types of arrangements of the two circular cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of heat transfer are noticed depending on how the two circular cylinders are positioned, resulting in quantitative changes of heat transfer coefficients on both cylinders. Collecting all the numerical results obtained, we propose a contour diagram for averaged Nusselt number for each of the two cylinders. The perfect geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate heat transfer rates on two identical circular cylinders arbitrarily positioned in physical space with respect to the main flow direction.