natural science educationThe article discusses the establishment of green classes and their development in school campuses and botanical gardens with respect to sustainable consumer society development. It generalises the experience of Lithuanian and European (Polish and German) pedagogues and scientists of...
as silicon dioxide and particularly as silicates, is also common in Earth’s crust and is an important component of Earth’s mantle. Its compounds also occur in all natural waters, in the atmosphere (as siliceous dust), in manyplants, and in the skeletons, tissues, and body fluids of some...
linear elastic fracture mechanics,the analysis of stress intensity factors and crack propagation is given for the finite plates with a single edge crack and with a mixed-mode crack in tensile-shear state,respectively.Numerical examples reveal the effectiveness and the advantages of the present method...
Associated with the development of finite element methods has been the concurrent development of an engineering science discipline called computational mechanics, or computational science and engineering. In this paper, we present a historical perspective on the developments of finite element methods mainly...
Finite element analysis of steady-state natural convection problems in fluid-saturated porous media heated from below In this paper, a progressive asymptotic approach procedure is presented for solving the steady-state Horton–Rogers–Lapwood problem in a fluid-saturated p... Chongbin,Zhao,H.,......
Correction of finite element models using experimental modal data for vibration analysis - ScienceDirect A method is presented for correcting finite element models by referring their modal parameters to experimental modal data. The method is based upon both th... M Okuma - 《Finite Elements in Anal...
Iodine is produced commercially from iodine-containingbrines. Natural brines, or brines extracted from oil wells containing up to 150 mg per liter (0.02 ounce per gallon) of iodine, are found in Java, California, and northern Italy; the world’s top producers includeChile, Japan, China, Russia...
Gary J. O’Sullivan and an anonymous reviewer for their constructive comments and suggestions. This work was supported by the National Natural Science Foundation of China (grant numbers 42072071, 41772047).More Information Abstract We present in situ trace element and Nd isotopic data of apatites ...
these minerals, the columbite–tantalite series, in whichcolumbite(FeNb2O6) andtantalite(FeTa2O6) occur in highly variable ratios, is the main commercial source.Pyrochlore, acalciumsodiumniobate, is also the principal commercial source. Natural niobium occurs entirely as the stableisotopeniobium-93....
He returned to the task of building the earthquake engineering program at Berkeley – the task he given when he was first hired in 1949. For their decisive contributions to the creation and developments of FEM, R. W. Clough was awarded the National Medal of Science in 1994 by the then ...