P92 steel weldment scheduled to use for next generation ultra super critical(USC) boiler header is assessed on creep characteristics. The test method to assess local structure of weldment is small-punch creep(SP-Creep) test, which is a kind of micro test proved the availability on evaluation of mechanical property for local structure. The results for P92 steel weldment are compared with that of tensile creep test for same microstructures of steel weldment. Overall, the creep resistance of coarse grain HAZ(CGHAZ) at 650℃ is inferior to the other structures while fine grain HAZ(FGHAZ) is most superior in the P92 steel weldment. The power law relationships can be obtained for each weldment structures(BM, ICHAZ, FGHAZ, CGHAZ and W.M) of USC boiler header

Chinese Character studies have mainly been focused on four areas: orthography, phonology, meaning, and character frequency. To add a new dimension to the existing approaches, this paper will provide and examine a quantitative data about the range of the vocabulary in Chinese character dictionaries. As a promising new method, the new approach, both diachronic and dynamic, will be very useful in exploring changing aspects of Chinese Characters usage, compared with the existing synchronic and static approaches. This paper aims to provide analysis of all Chinese Characters included in Chŏnun-okp'yŏn, the most authoritative dictionary of Joseon dynasty published in 1805 meaning ‘Chinese Rhyme Dictionary’, and in Sinjajeon, meaning ‘New Dictionary of Chinese Characters’ published in 1915, to explain their changing aspects in the entries of two dictionaries, and then to show how social change affected the use of Chinese Characters in early twentieth-century Korea. To that end, I construct the database of the two dictionaries on the basis of a detailed analysis of all the characters with respect to the radicals, strokes, components, and structures of these characters, which shows that Chŏnun-okp'yŏn includes 10,997 Chinese characters and Sinjajeon contains 13,348 characters with 13,084 in the body text and 264 in three appendices. 2,114 characters were newly inserted and 7 characters were removed in the body text of Sinjaeon. In particular, the number of the radical headings containing more than 20 newly inserted characters are 35, with 1,624 new characters in total, accounting for 77.1% of the total. The total number of radical headings including more than 30% newly inserted characters are 26. In addition, the number of radical headings containing more than 10 newly inserted characters with a growth rate of more than 20% is 903, accounting for 43% of the total number of characters. Based on these data, modern Koreans appears to have a wider vocabulary consisted of Chinese characters. The number of characters under the radicals meaning animal and plant ( 犬 (dog), 牛 (cow), 肉 (meat), 木 (tree), 米 (rice), 禾 (pine), 田 (farmland), 虫 (insect) etc.), those meaning mineral (石 (stone), 玉 (jade), etc), those meaning industrial products (皮 (leather), 巾 (towel) ect.), those meaning pathology (疒 (illness), 歹 (broken bones), etc.), increased quite a bit, the words reflecting newly emerged phenomena of industrialization or modernization in the early 20th century. In addition, it can be pointed out that the words used for spoken Chinese newly appears in Sinjaeon.

Recently, many countries have been interested in waste-to-energy policy and technology due to the economic crisis from high oil price and the demands on securing the sustainable energy sources. As one of the efforts to achieve the sustainable society and maintain low impact of global warming in Korea, the act on the promotion of saving and recycling resources was enacted to implemetnt the effective reduction of waste at source level, reduce, recycling and recovery of waste to energy. Attaining an efficient recovery of waste heat in a cogeneration plant from incineration facilities is important as a resource recovery of waste to energy. In this study, the waste heat recoveries changed by reducing feed pressure in incineration conditions were analyzed. As results, changing the operating condition in steam header resulted in stable heat supply and increase of waste heat recovery.