Results 1 to 10 of about 666,240 (316)
The possibility of recasting of pure titanium
Journal of Dental Sciences, 2017 Background/purpose: Pure titanium (Ti) has many advantages, such as high corrosion resistance and excellent biocompatibility. The mechanical properties of pure Ti are like those of type IV gold alloys.
Pei-Ling Lai +5 more
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Preparation of ZnO/Brucite Functional Composite Powder by the Mechanochemical Method
Frontiers in Materials, 2021 In this experiment, ZnO/brucite composite powder was prepared through the mechanochemical method; further, the properties, particle morphology, and structure of the composite powder were characterized. The results show that mechanical grinding action can
Huan Shuai +4 more
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Tensile and Bending Strength Analysis of Ramie Fiber and Woven Ramie Reinforced Epoxy Composite
Journal of Natural Fibers, 2021 This study aims to analyze the effect of the number of woven ramie layers (plies) and ramie fiber weight as reinforcement of composite on the tensile strength and bending strength.
Zulkifli Djafar +2 more
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On approximation numbers of composition operators
Journal of Approximation Theory, 2012 We show that the approximation numbers of a compact composition operator on the weighted Bergman spaces $\mathfrak{B}_α$ of the unit disk can tend to 0 arbitrarily slowly, but that they never tend quickly to 0: they grow at least exponentially, and this speed of convergence is only obtained for symbols which do not approach the unit circle.
Daniel Li 0004 +2 more
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Adaptive Speaker Recognition Based on Hidden Markov Model Parameter Optimization
IEEE Access, 2020 The Hidden Markov Model (HMM) is a widely used method for speaker recognition. During its training, the composite order of the measurement probability matrix and the number of re-evaluations of the initial model affect the speed and accuracy of a ...
Yangjie Wei
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Narayana numbers and Schur–Szegő composition
Journal of Approximation Theory, 2009 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vladimir P. Kostov +2 more
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Determination of the Optimum formula for Composite Motor Gasoline Octane Number Blending Enhancer
Journal of Engineering, 2019 To decrease the dependency of producing high octane number gasoline on the catalytic processes in petroleum refineries and to increase the gasoline pool, the effect of adding a suggested formula of composite blending octane number enhancer to motor ...
Alaa D. Jawad Al-Bayati +2 more
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On compositions of numbers and graphs
CoRR, 2007 The main purpose of this note is to pose a couple of problems which are easily formulated thought some seem to be not yet solved. These problems are of general interest for discrete mathematics including a new twig of a bough of theory of graphs i.e. a given graph compositions.
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Generating d-Composite Sandwich Numbers
Integers, 2015 See the abstract in the attached pdf.
Lenny Jones, Alicia Lamarche
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A Fibonacci-like Sequence of Composite Numbers [PDF]
The Electronic Journal of Combinatorics, 1999 In 1964, Ronald Graham proved that there exist relatively prime natural numbers $a$ and $b$ such that the sequence $\{A_n\}$ defined by $$ {A}_{n} =A_{n-1}+A_{n-2}\qquad (n\ge 2;A_0=a,A_1=b)$$ contains no prime numbers, and constructed a 34-digit pair satisfying this condition. In 1990, Donald Knuth found a 17-digit pair satisfying the same conditions.
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