With the development of China's environmental protection industry, municipal sewage treatment projects continue to expand. Municipal sewage treatment engineering involves many types of professional, and BIM is a c...With the development of China's environmental protection industry, municipal sewage treatment projects continue to expand. Municipal sewage treatment engineering involves many types of professional, and BIM is a commonly used information technology means in construction engineering projects, is a revolutionary technology of engineering design industry, with visualization characteristics. The BIM technology serves the project cycle by building a three-dimensional multidimensional model. The use of BIM technology can ensure the smooth progress of municipal sewage treatment engineering construction. Discuss the advantages of BIM in municipal sewage treatment engineering and discuss the application of BIM in municipal sewage treatment.展开更多
Rock magnetic measurements of Nihewan sediments from Xujiayao section demonstrate that magnetite, hematite and maghemite are dominant remanent magnetization carriers. Monitoring the variations of magnetic susceptibili...Rock magnetic measurements of Nihewan sediments from Xujiayao section demonstrate that magnetite, hematite and maghemite are dominant remanent magnetization carriers. Monitoring the variations of magnetic susceptibility(MS) and saturating isothermal remanent magnetization(SIRM) at low temperature are the attractive ways of detecting the presence of magnetite, maghemitization and superparamagnetic grain sizes. Low-temperature MS investigations suggest that susceptibility enhancement for Xujiayao samples is mainly due to the remarkable presence of SD/MD magnetite to some degree though some magnetite grains have been partially oxidized at some depths. It is tentatively concluded that both SD/MD magnetite and hematite are of detrital origin and carry a characteristic remanent magnetization(ChRM), whereas maghemite can be attributed to be chemical origin, overprinting a reversed polarity component of Matuyama age.展开更多
文摘With the development of China's environmental protection industry, municipal sewage treatment projects continue to expand. Municipal sewage treatment engineering involves many types of professional, and BIM is a commonly used information technology means in construction engineering projects, is a revolutionary technology of engineering design industry, with visualization characteristics. The BIM technology serves the project cycle by building a three-dimensional multidimensional model. The use of BIM technology can ensure the smooth progress of municipal sewage treatment engineering construction. Discuss the advantages of BIM in municipal sewage treatment engineering and discuss the application of BIM in municipal sewage treatment.
基金This work was supported by the National Natural Science Foundation of China (Grant No.49474218) The Norwegian MSc-Program financed the stay of Wang Xisheng in Norway for two years. We thank Dr. Harald Walderhaug, Dr. H. Stockhausen, and Dr. F. Hauge
文摘Rock magnetic measurements of Nihewan sediments from Xujiayao section demonstrate that magnetite, hematite and maghemite are dominant remanent magnetization carriers. Monitoring the variations of magnetic susceptibility(MS) and saturating isothermal remanent magnetization(SIRM) at low temperature are the attractive ways of detecting the presence of magnetite, maghemitization and superparamagnetic grain sizes. Low-temperature MS investigations suggest that susceptibility enhancement for Xujiayao samples is mainly due to the remarkable presence of SD/MD magnetite to some degree though some magnetite grains have been partially oxidized at some depths. It is tentatively concluded that both SD/MD magnetite and hematite are of detrital origin and carry a characteristic remanent magnetization(ChRM), whereas maghemite can be attributed to be chemical origin, overprinting a reversed polarity component of Matuyama age.
