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都市氣溫과 都市規模에 關한 硏究 : 서울地域을 中心으로
辛玉鉉 건국대학교 1987 장안지리 Vol.2 No.2
The larger city size was, the bigger difference in temperature was between inside and outside the city. 1 have studied onuses of increase of urban temperature, and relationship of size of heat island and city size. Below are my conclusions. (1) City size and urban temperature were in a linear proportion. Here is the equation based on population of Seoul. Tu-r(max)=1.46 log P-5.93 (Population : Below 300,000) Tu-r(max)=3.43 log P-16.58 (Population : above 300,000) P represents population. Population of a city was connected (Very closely) with heat island. The line representing relationship of heat island and population of a city showed a gradual increase below 300,000 and a rapid increase above it. (2) Main onuses increasing urban temperature included structure of a city, coverage of it artificial heat atmospheric turbidity, etc. 1) Relationship of impermeable surface and difference in temperature; It was obvious that :the greater the percentage of impermeable surface material is, the higher the temperature ism anomally in the urban area. Especially for impermeable coverage>80% the temperature increased anomally rapidly. 2) Causes of production of artificial heat included the heat made by citizens' energetic activities, atmospheric materical from factories and artificial heat by vehides. All of factors of artifical heat made a big difference in urban temperature. 3) Atmospheric turbidity kept increasing in Seoul from 1958 to 1979. The higher the atmospheric turbidity was, the higher urban temperature was because of the greenhouse effect.
신옥현 ( Ok Hyun Shin ),이은주 ( Eun Joo Lee ),김각현 ( Kag Hyun Kim ) 대한임상검사과학회 2001 대한임상검사과학회지(KJCLS) Vol.33 No.2
Serum separation tubes(SST) conπibute to the reduction of laboratory errors and to the automation of testing processes. However, the glass tubes may be liable to breakage when they are inadvertently dropped on a hard surface or when the caps are opened. π11S increases the risk of puncture wounds and contamination of the blood. Recently, plastic blood-drawing tubes with potential advantage providing more safety to laboratoη employees have been introduced. We evaluated the usefulness of plastic evacuated blood-drawing tubes(SST 11 PLUS) in compared with the glass tubes in testing 26 chemistry analytes. There were no statistically significant differences between the analytes in the SST and in the SST 11 PLUS tubes or the period of storage in most assays. Some analytes including CO2, TG, AST, ALT, LDH showed a significant difference between the types of tubes. However, these differences were probably caused by the instability of the samples(e.g., CO2) or between-run variability and are not considered clinically significant. The values of K, Cl and CU2 also showed statistically significant differences by the storage time. However, K value in blood drawn in plastic tubes showed no significant difference for up to 5 days. In conclusion, the plastic SST 11 PLUS tubes can be substituted for the glass SST tubes in routine chemis따 analysis.