• Korean Journal of Oriental Medicine
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• v.3 no.1
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• pp.169-181
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• 1997

Kimi(氣味) means five tastes(五味), sour, bitterness, sweetness, hot taste and astringency, and four conditions(四氣), cold, hot, warm and cool, in the oriental medicine. This is defined based on yn-yang 5 evolutive phasis(陰陽五行), and 5 evolutive phasis on the change of season. Four seasons, spring, summer, autumm, winter are clearly different but, the rainy season(長夏) is not. In the thee of Ki (氣), not worm not hot(平) is included in addition to the four conditions that is because the rainy season is not differentiated clearly. KImi have realations to the four seasons, that is, warm and hot taste is considered as spring, hot and astringency as summer, not worm not hot and sweetness as rainy season, cool and sour as autumm, and cold and bitterness as winter. 4 conditions can be classified more detail, because the changes of the seasons are continuous. In the action mechanisms, Gardeniae Fructus reduces Heat of Insufficency Type(虛熱) of the upper class of medicinal herbs(上焦), and Rhel Rhizoma reduces Exessive Heat(實熱) of the under class of them(下焦). The assay methods for four groups medicines can be developed in three ways according to the indicators as follows. First, by the indicator which defines cold-acting medicine(寒性藥) such as Rhei Rhizoma, Coptidis Rhizoma, Scutellariae Radix, Gardeniae Fructus and is differentiated clearly from Hot-acting medicine(熱性藥) at the same time. Second, when the medicines are classified into another four groups as Drugs for Dispelling Internal Cold(溫裏藥), Drugs for Relieving Exterior Syndrome(解表藥), Drugs for Dispelling Phlegm(祛痰藥), Drugs for Regulatings Ki Flow(理氣藥), by the indicator which satisfies each group and is differentiated from other groups, at the same time. Third, by the indicator which has to be defined for each medicinal herb for four classification, individually.

• KIEAE Journal
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• v.16 no.3
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• pp.25-34
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• 2016

Purpose: The temperature in Seoul has risen 3 times more than the average global temperature increase for the past 100 years. Today, summer starts 15 days earlier than the early 20th century and is 32 days longer. This tendency causes rapid increase of cooling energy demand. Following this effect, seawater heat resources are to be used as an countermeasure for global warming. Incheon Port near the Western Sea has the lowest water temperature in the winter in South Korea in which it is suitable to use seawater cold heat resources. Method: The cold heat resource is gained from seawater when the water temperature is the lowest in the winter time and saved in a seasonal thermal storage. This can be used as cold heat resource in the summer time. A heat exchanger is essential to gain seawater cold energy. Due to this necessity, sea water heat resource heat exchangers are modeled by heat transfer equations and the fluid characteristics are analyzed. Also, a CFD (computational fluid dynamics) program is used to conduct simulation on the fluid characteristics of heat exchangers. The analyzed data of deducted from this process are comprehensively analyzed and discussed. Result: Regarding the performance of the heat exchanger, the heat exchanger was operated following the prediction within the range of heat transfer rate of minimum 3.3KW to maximum 33.6KW per device. In the temperature change analysis of the heat exchanger, fluid analysis by heat transfer equations almost corresponded to the temperature change by CFD simulation. Therefore, it is considered that the results of this study can be used as design data of heat exchangers.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.30.2-30.2
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• 2010

Numerous operational anomalies and satellite failures have been reported since the beginnings of the "space age". Space weather effects on modern spacecraft systems have been emphasized more and more as increasing their complexity and capability. Energetic particles potentially can destroy and degrade electronic components in satellites. We analyzed the geostationary (GEO) satellite anomalies during 1997-2009 to search possible influences of space weather on the satellite anomalies like power problem, control processor problem, attitude control problem, etc. For this we use particle data from GOES and LANL satellites to investigate space weather effects on the GEO satellites' anomalies depending on Kp index, local time, seasonal variation, and high-energy electron contribution. As results, we obtained following results: (1) there is a good correlation between geomagnetic index(Kp) and anomaly occurrences of the GEO satellite; (2) especially during the solar minimum, occurrence of the satellite anomalies are related to electron flux increase due to high speed solar wind; (3) satellite anomalies occurred more preferentially in the midnight and dawn sector than noon and dusk sector; (4) and the anomalies occurred twice more in Spring and Fall than Summer and Winter; (5) the electron with the lowest energy channel (50-75keV) has the highest correlation (cc=0.758) with the anomalies. High association between the anomalies and the low energy electrons could be understand by the facts that electron fluxes in the spring and fall are stronger than those in the summer and winter, and low-energy electron flux is more concentrated in the dawn sector where the GEO satellite anomalies occurred more frequently than high-energy electron flux. While we could not identify what cause such local time dependences, our results shows that low-energy electrons (~100keV) could be main source of the satellite anomaly, which should be carefully taken into account of operating satellites.

• Journal of Environmental Health Sciences
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• v.37 no.4
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• pp.306-314
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• 2011

Objectives: Respiratory virus infections are the most common disease among all ages in all parts of the world and occur through airborne transmission. The purpose of this study was to detect and quantitate human respiratory viruses in residential environments. Methods: Air samples were collected from the residential space of apartments in the Seoul/Gyeonggi-do area. The samples were collected from indoor and outdoor air. Among respiratory viruses, influenza A virus, influenza B virus, parainfluenza virus, metapneumovirus, respiratory syncytial virus, and adenovirus were investigated by multiplex polymerase chain reaction. Among the virus-positive samples, we performed adenovirus quantification by real-time polymerase chain reaction. Results: Virus detection rates were 44.0%, 3.8%, 3.4%, and 17.3% in spring, summer, autumn, and winter, respectively. The virus detection rate was higher in winter and spring than in summer and autumn. Adenovirus was most commonly detected, followed by influenza A virus and parainfluenza virus. Virus distribution was not significantly different between indoor and outdoor environments. Conclusions: Although virus concentrations were not high in residential environments, residents in houses with detected viruses may have an increased risk of exposure to airborne respiratory viruses, especially in winter and spring.

• BMB Reports
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• v.39 no.6
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• pp.749-758
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• 2006

The cytosolic members of the HSP70 family of proteins play key roles in the molecular chaperone machinery of the cell. In the study we cloned and sequenced the full-length cDNA of Delia antiqua HSP70 gene, which is 2461 bp long and encodes 643 a.a. with a calculated molecular mass of 70,787 Da. We investigated gene copies of cytosolic HSP70 members of 4 insect species with complete genome available, and found that they are quite variable with species. In order to characterize this protein we carried out an alignment and a phylogenetic analysis with 41 complete protein sequences from insects. The analysis divided the cytosolic members of the family into two classes, HSP70 and HSC70, distinguishable on the basis of 15 residues. HSP70 class members were slightly shorter in length and smaller in molecular mass relative to the HSC70 class members, and the conservative and functional regions in these sequences were documented. Mainly, we investigated the expression of Delia antiqua HSP70 gene, in response to diapauses and thermal stresses. Both summer and winter diapauses elevated HSP70 transcript levels. Cold-stress led to increased HSP70 expression levels in summer- and winter-diapausing pupae, but heat-stress elevated the levels only in the winter-diapausing pupae. In all cases, the expression levels, after being elevated, gradually decreased with time. HSP70 expression was low in non-diapausing pupae but was up-regulated following cold- and heat-stresses. Heat-stress gradually increased the mRNA level with time whereas cold-stress gradually decreased levels after an initial increase.

• The Korean Journal of Physiology
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• v.3 no.1
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• pp.59-66
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• 1969

Experiments on thermoregulatory responses to cold immersion stimulus were carried out in September, 1968 (summer studies) and February, 1969 (winter studies). Eight each of ama and control subject were selected at random from a same community in Yong-Do Island, Pusan. The results obtained are summarized as follows: 1) The rate of fall in muscle temperature of forearm during a 30 min-immersion in $6^{\circ}C$ water bath was significantly slower in the ama in winter and was about the same in the two groups in summer. However, the magnitude of change in the skin temperature and the heat fluxes observed during immersion period was not significantly different either between groups or between seasons. 2) Both finger blood flow and skin temperature during one hr-immersion in $6^{\circ}C$ water bath decreased significantly in the ama as compared to the control. The magnitude of cold-induced vasodilatation during immersion period was significantly greater in the control in winter. However, the time of onset and blood flow at onset showed no significant relation between groups. 3) The magnitude of reactive hyperemia after a 5 min-arterial occlusion in both air and $15^{\circ}C$ water bath was significantly lower in the ana than in the control. In control subjects, post-occluded blood flow in water was significantly greater than in air, while in the ama it decreased to 1/2 of control values. The time required for the return of blood flow to resting values in the air was faster in the ama than in the control but was the same in water in the two groups. 4) The results suggest that vasoconstrictor tone increased in the ama in winter, indicating the development of vascular adaptation as a part of cold acclimatization.

• Journal of The Korean Society of Grassland and Forage Science
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• v.7 no.2
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• pp.87-91
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• 1987

This study was carried out to investigate the effects of different cutting times at 0, 10 and 20 days after lodging on the percentage of dead plants and bare ground, live and dead matter build-up, and botanical composition of orchardgrass dominated pasture during the mid summer season. For the test, a randomized block design with 3 replications was treated with 3 different cutting times (July 17, July 27 and Aug. 6). The results obtained are summarized as follows: 1. The percentage of dead plants with cutting times at 0, 10 and 20 days after lodging was 26.3,41.7 and 46.7'%, respectively. 2. The percentage of bare ground with cutting times at 0, 10 and 20 days after lodging was 13.3,26.7 and 3 1.7%, respectively. 3. Dead matter build-up with cutting times at 0, 10 and 20 days after lodging was increased significantly with later cutting (p<0.05). The ratio of live and dead matter build-up with cutting times at 0, 10 and 20 days after lodging was 90.2:9.8, 47.7:52.3 and 39.1:60.9%, respectively. 4. Regrowth yield after lodging was decreased significantly (p<0.05) with later cutting time. 5. The percentage of legumes in botanical composition was increased greatly with later cutting time. The ratio of grasses and legumes with cutting times at 0, 10 and 20 days after lodging was 77.8:21.6,45.5: 50.3 and 36.5:61.7%, respectively.

• Journal of Ocean Engineering and Technology
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• v.21 no.1 s.74
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• pp.7-17
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• 2007

Based on the Boussinesq wave model, the wave distribution in the Chagui-Do sea area in Jeju was simulated by applying the directional irregular waves at an incident boundary. The time and spatial variations of monthly mean wave height and period were investigated, which aims to provide basic information on optimal sites for wave power generation. The grid size and time interval of the Boussinesq wave model were validated by examining wave distributions around a surface piercing wall, fixed at sea bottom with a constant slope. Except for the summer season, the significant wave height is dominated by wind waves and appears to be relatively high at the north sea of Chagui-Do, which is open to the ocean, while it is remarkably reduced at the rear sea of Chagui-Do because of its blocking effect on incident waves. In the summer, the significant wave height is higher at the south sea, and it is dominated by the swell waves, which is contributed by the strong south-west wind. The magnitude of significant wave height is the largest in the winter and the lowest in the spring. Annual average of the significant wave height is distinctively high at the west sea close to the Chagui-Do coast, due to a steep variation of water depth and corresponding wave focusing effect. The seasonal and spatial distribution of the wave period around Chagui-Do sea reveals very similar characteristics to the significant wave height. It is suggested that the west sea close to the Chagui-Do coast is the mast promising site for wave power generation.

• Korean Institute of Interior Design Journal
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• v.21 no.5
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• pp.272-279
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• 2012

Apartments with a southern exposure are often thought to have advantages in receiving winter sunlights and summer natural ventilation. However, as due-south-apartments increase recently, the consideration for residential environment for households with no southern exposure is necessary. In case of due-south-apartments, residents prefer east-sided apartments than west facing apartments which might receive more hot sunlight in the afternoon; however in case of west-oriented apartments with active ventilation, the interior area is bright until late afternoon without unpleasant heat and has advantage in light environment aspects. This study aims to compare and analyze merits and demerits of air flow and sunlighted environment of buildings through sunshine duration simulation using CFD simulation ad sunlights about southeast-sided and southwest-sided apartments based on general opinions for apartment directions. As results of the interior natural ventilation analysis, as the average air flow speed in southwest-sided apartments was 1m/s faster than that of southeast-sided, it has effects of lowering sensory temperature of residents in summer, and for sunlighted environment, southwest-sided apartments are advantageous for sunlighted area for duration time inside. As a result of the research, the calculation of physical residential environment of apartment residential space should be reached through integrated evaluation of natural ventilation and sunlighted time from placement and facing direction of the buildings considering characteristics and environment of each apartment, not based on general opinions.

• Journal of Fashion Business
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• v.4 no.1
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• pp.13-24
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• 2000

The purpose of this research is to offer basic data for study of men's suits by investigating the wearing conditions of men's suits. For data collection, a questionnaire was composed of a number of times and the reason of the suit wearing, and a number of suits they posses etc. The subjects of this research were male who aged 20-59 and resided in Seoul and the capital region. The results of the research are summarized as the following : 1. The mean age of suit wearing for the first time is 22.7 years old. The younger began to wear the suits earlier than the older. 2. A number of times of suit wearing for a week is more than 5 days mostly. Being educated higher, the ratio of suit wearing is getting higher. And In the case of job, office men, sales men and men whose job of specialization are wearing suits many a time more than a graduate student and a technician. Most of tne men especially 30's$\sim$40's is wearing the suit as a working garment. 3. Most of men is wearing jacket, dress-shirt and necktie in spring and fall, dress-shirt and necktie in summer, and jacket, vest, dress-shirt and necktie in winter. 4. As a general rule, men have about 2 suits for spring/fall and winter, and about 1 suit for summer. Also male has more than 6 ready-made suits and about 1 custom suit. The last, men almost do not use the suspender with suits.