搜索结果: 1-15 共查到“理学 fractions”相关记录40条 . 查询时间(0.031 秒)
Tellurium isotope compositions in acid leach fractions of carbonaceous chondrites
tellurium isotopes acid leaching N-TIMS carbonaceous chondrites isotope anomaly
2017/4/10
We present the tellurium (Te) isotope compositions of the acid leachates and residues from three carbonaceous chondrites,
namely, Allende, Murchison, and Tagish Lake. Most of the Te isotope compositi...
商洛学院数学与计算机应用学院初等数论课件Chapter 5 Continued Fractions
商洛学院数学与计算机应用学院 初等数论 课件 Chapter 5 Continued Fractions
2017/4/7
商洛学院数学与计算机应用学院初等数论课件Chapter 5 Continued Fractions.
Open and closed seascapes: Where does habitat patchiness create populations with high fractions of self-recruitment?
coral reef seascapes dispersal
2015/12/11
Which populations are replenished primarily by immigrants (open) and which
by local production (closed) remains an important question for management with implications
for response to exploitation, p...
REMOTE SENSING OF WATER COLOR: MODEL SENSITIVITY ANALYSIS AND ESTIMATION OF PHYTOPLANKTON SIZE FRACTIONS
Sensitivity analysis Phytoplankton size
2015/1/16
Phytoplankton size classes (pico-plankton, nano-plankton, and micro-plankton) provide information about pelagic ocean ecosystem structure, and their spatiotemporal variation is crucial in understandin...
Bounds on the volume fractions of two materials in a three dimensional body from boundary measurements by the translation method
inverse problems size estimation electrical impedance tomography
2012/6/19
Using the translation method of Tartar, Murat, Lurie, and Cherkaev bounds are derived on the volume occupied by an inclusion in a three-dimensional conducting body. They assume electrical impedance to...
Galaxy evolution in groups and clusters: star formation rates, red sequence fractions, and the persistent bimodality
methods: statistical-galaxies: groups: general-galaxies: clusters:general-galaxies: haloes-galaxies: evolution-galaxies: star formation
2011/10/17
Using galaxy group/cluster catalogs created from the Sloan Digital Sky Survey Data Release 7, we examine in detail the specific star formation rate (SSFR) distribution of satellite galaxies and its de...
Compositions, Random Sums and Continued Random Fractions of Poisson and Fractional Poisson Processes
Fractional birth process Bell polynomials Mittag–Leffler functions Fibonacci numbers continued fractions Poisson random fields
2011/9/8
Abstract: In this paper we consider the relation between random sums and compositions of different processes. In particular, for independent Poisson processes $N_\alpha(t)$, $N_\beta(t)$, $t>0$, we sh...
Free group algebras in Malcev-Neumann skew fields of fractions
Division rings Malcev-Neumann series Rings and Algebras
2011/9/5
Abstract: Let K be a skew field and (G,<) an ordered group. We show that the skew field generated by the group ring K[G] inside the Malcev-Neumann series ring K((G;<)) contains noncommutative free gro...
Counting the number of solutions to the Erdos-Straus equation on unit fractions
the Erdos-Straus equation unit fractions Number Theory
2011/8/25
Abstract: For any positive integer $n$, let $f(n)$ denote the number of solutions to the Diophantine equation $\frac{4}{n} = \frac{1}{x} + \frac{1}{y} + \frac{1}{z}$ with $x,y,z$ positive integers. Th...
Comparisons of In vitro Nitrate Reduction, Methanogenesis, and Fermentation Acid Profile among Rumen Bacterial, Protozoal and Fungal Fractions
Nitrate Rumen Protozoa Bacteria Fungi Methane
2016/5/6
The objectives were to compare the ability of various rumen microbial fractions to reduce nitrate and to assess the effect of nitrate on in vitro fermentation characteristics. Physical and chemical me...
We establish new combinatorial transcendence criteria for continued fraction expansions. Let α = [0; a1, a2, . . .] be an algebraic number of degree at least three. One of our criteria implies that th...
Modular categories, integrality and Egyptian fractions
Modular categories integrality Egyptian fractions
2011/1/18
It is a well-known result of Etingof, Nikshych and Ostrik that there are finitely many inequivalent integral modular categories of any fixed rank n.This follows from a double-exponential bound on the ...
Dynamics of continued fractions and kneading sequences of unimodal maps
Dynamics of continued fractions kneading sequences of unimodal maps
2011/1/20
The goal of this paper is to provide a link between the parameter spaces of two families of one-dimensional dynamical systems, and to shed some light onto some sets of numbers which arise as “exceptio...
Study of isotopic fractions and abundances of the neutron-capture elements in HD 175305
isotopic fractions the neutron-capture elements
2011/1/10
The chemical abundances of metal-poor stars are excellent sources of information for setting new constraints on models of Galactic chemical evolution at low metallicities. In this paper we present an ...
Measurement of the B -> Dbar(*)D(*)K branching fractions
Measurement B -> Dbar(*)D(*)K branching fractions
2011/1/4
We present a measurement of the branching fractions of the 22 decay channels of the B0 and B+
mesons to D()D()K, where the D() and D() mesons are fully reconstructed. Summing the
10 neutral mode...