搜索结果: 136-150 共查到“理学 Elements”相关记录203条 . 查询时间(0.031 秒)
Trace elements in South America aerosol during 20th century inferred from a Nevado Illimani ice core, Eastern Bolivian Andes（6350 m asl）
Trace elements South America aerosol Nevado Illimani ice core Eastern Bolivian Andes
2009/3/11
A 137 m ice core drilled in 1999 from Eastern Bolivian Andes at the summit of Nevado Illimani (16º 37' S, 67º 46' W, 6350 m asl) was analyzed at high temporal resolution, allowing a characte...
ORBITAL ELEMENTS, DYNAMICAL MASSES AND PARALLAXES FOR 4 DOUBLE AND ONE TRIPLE SYSTEMS
binaries visual
2009/3/2
New orbital elements for four binaries: WDS 00416+2438 = WRH
28, WDS 01554+0257 = A 2407 = ADS 1530, WDS 15031+4439 = CHR 43 and
WDS 22550+5132 = HU 785 = ADS 16368 and one triple star WDS 23393+454...
Some elements of Dynamic Geometry and optimization in Physics
Geometry and Physics fractals compatibility criteria growth process accommodation
2009/2/25
The strong connection of the Physics and Geometry is wellknown,
beginning with the roots in the geometrical similitude of the important
method of the Physics similarity, up to the recent development...
Dispersion of Marked Fluid Elements in a Turbulent Ekman Layer
stochastic model Fluid Elements Turbulent Ekman Layer
2009/1/13
A stochastic model is derived for studying shear-dispersion in a horizontally homogeneous, turbulent Ekman layer that is evolving in time. It is based on a one-dimensional model including an advanced ...
Elements of Quasiconvex Subdifferential Calculus
Calculus subdifferential constructed lower subdifferential
2009/1/13
A number of rules for the calculus of subdifferentials of generalized convex functions are displayed. The subdifferentials we use are among the most significant for this class of functions, in particu...
Some elements of Dynamic Geometry and optimization in Physics
Geometry and Physics fractals compatibility criteria growth process accommodation
2009/1/7
The strong connection of the Physics and Geometry is wellknown,
beginning with the roots in the geometrical similitude of the important
method of the Physics similarity, up to the recent development...
A Note on Estimates of Diagonal Elements of the Inverse of Diagonally Dominant Tridiagonal Matrices
Tridiagonal matrices Bounds of entries of the inverse
2010/1/25
In this note we show how to improve some recent upper and lower bounds for the elements of the inverse of diagonally dominant tridiagonal matrices. In particular, a technique described by [R. Peluso, ...
Preconcentration of Trace Elements on Amberlite XAD-4 Resin Functionalised with 1,2-bis (o-aminophenylthio) Ethane and Their Determination by FAAS in Environmental Samples
Water trace element preconcentration Amberlite XAD-4 FAAS 1 2-bis (o-aminophenylthio) ethane chelating resin
2010/4/8
The use of chemically modified XAD-4-1,2-bis (o-aminophenylthio) ethane chelating resin for preconcentrating Cr6+, Mn2+, Fe3+, Co2+, Cu2+, Cd2+, Zn2+, Pb2+, and Ni2+ was studied using flame atomic abs...
Some Elements of Finite Order in $K_2 Q$
$K_2\mathbb Q $ cyclotomic polynomial Diophantine equation
2007/12/13
Let $K_2$ be the Milnor functor and let $\Phi_n(x)\in{\mathbb Q}[x]$ be the $n$-th cyclotomic polynomial. Let $G_n(\mathbb Q)$ denote a subset consisting of elements of the form $\{a, \Phi_n(a)\},$ wh...
QUADRILATERAL FINITE ELEMENTS FOR PLANAR LINEAR ELASTICITY PROBLEM WITH LARGE LAM$\{'E}$ CONSTANT
Planar linear elasticity optimal error estimates large Lam\'{e} constant locking phenomenon
2007/12/12
In this paper, we discuss the quadrilateral finite element approximation
to the two-dimensional linear elasticity problem associated with a
homogeneous isotropic elastic material. The optimal conver...
PRECONDITIONING HIGHER ORDER FINITE ELEMENTSYSTEMS BY ALGEBRAICMULTIGRID METHOD OF LINEAR ELEMENTS
2007/12/12
We present and analyze a robust preconditioned conjugate gradient
method for the higher order Lagrangian finite element systems of
a class of elliptic problems. An auxiliary linear element
stiffnes...
We examine a simple averaging formula for the gradient
of linear finite elements in $R^d$ whose interpolation order
in the $L^q$-norm is $\Cal O(h^2)$ for $d<2q$ and nonuniform
triangulations. For ...
Elements at risk as a framework for assessing the vulnerability of communities to landslides
Elements framework vulnerability communities landslides
2009/12/30
The assessment of the vulnerability of communities prone to landslide related disasters is a topic that is growing in importance. Few studies discuss this issue and limited research has been carried o...
The paper makes some analyses on 11 trace elements in the Milanggouwan stratigraphical section in the Salawusu River valley, which is regarded as a prototype geology-palaeoclimate record s...