نتایج جستجو برای: model chemistry
تعداد نتایج: 2196219 فیلتر نتایج به سال:
polycyclic aromatic hydrocarbons (pahs) are a class of compounds consisting of more than twobenzene rings fused in a linear, angular, or clustered arrangement and do not contain hetero atomsor carry subsistent. pahs originate from various sources. they are primarily formed byincomplete combustion of carbon-containing fuels such as wood, coal, diesel, fat, or tobacco. thepresent study reports an...
increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...
Chemistry-climate model SOCOL: a validation of the present-day climatology T. Egorova, E. Rozanov, V. Zubov, E. Manzini, W. Schmutz, and T. Peter Institute for Atmospheric and Climate Science ETH, Zurich, Switzerland Physical-Meteorological Observatory/World Radiation Center, Davos, Switzerland Main Geophysical Observatory, St.-Petersburg, Russia National Institute for Geophysics and Volcanolog...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
Migrating data to a new database model presents problems if there are existing application programs that must continue to access the data, bu that cannot be converted immediately. If the target database is object-oriented, such a legacy program can be encapsulated as an object or a message. We argue that some applications will beneet from further \reiication" of execution instances as database ...
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