Results 11 to 20 of about 39,536 (308)

Sieves of Eratosthenes

open access: yesNature, 1950
THE sieve of Eratosthenes has been used mainly for the determination of prime numbers - a function now presumably archaic. Sieves have other uses, including the finding of primes in arithmetical progression.
Nicol, Hugh
openaire   +2 more sources

charlesneimog/OM-Sieves: 1.1 version updated

open access: yes, 2022
This library is a complementation of the mathtools developed by Carlos Agon and Moreno Andreatta. It has that aim to make easier the use of the Xenakis' sieves in OM#
Charles K. Neimog
core   +1 more source

ROBUST SIEVE ANALYSIS USING SIEVE-BY-SIEVE METHOD

open access: yesHEALTH SCIENCES QUARTERLY, 2020
Distribution of size of sand grains is an important factor in characterization of unconsolidated reservoirs as well as designing sand control devices. In practice, sand grains are passed through a set of known mesh sizes by mechanical vibration and for a fixed period then the weight of sediments retained on each sieve are measured and converted into ...
Kourosh KHADIVI   +2 more
openaire   +2 more sources

The influence of the presence of gasses in mineral oil on the ability of molecular sieves for water sorption [PDF]

open access: yesITM Web of Conferences, 2019
Previous studies has shown, that for the same relative humidity, the ability of molecular sieves to adsorb water in the air is higher than in mineral oil.
Cybulski Mateusz, Przybylek Piotr
doaj   +1 more source

Structural Sieves

open access: yesCoRR, 2021
This paper explores the use of deep neural networks for semiparametric estimation of economic models of maximizing behavior in production or discrete choice. We argue that certain deep networks are particularly well suited as a nonparametric sieve to approximate regression functions that result from nonlinear latent variable models of continuous or ...
openaire   +2 more sources

Seed size and its effects on the physiological quality of produced seeds [PDF]

open access: yesRevista Ciência Agronômica
The physiological quality of soya bean seeds is a determining factor in establishing the crop in the field. The aim of the present study was to evaluate the physiological quality of soya bean seeds produced by plants grown from seeds of different sizes ...
Alcimar Spindola Mazon   +4 more
doaj   +1 more source

PHYSICOCHEMICAL QUALITY CHARACTERISTICS OF BUCKWHEAT FLOUR [PDF]

open access: yesEngenharia Agrícola, 2022
The aim of this study was to characterize buckwheat flours produced using different processing methods, including with or without tegument removal and sieving with different mesh sizes.
Priscila A. Jara   +4 more
doaj   +1 more source

Mechanized harvesting and primary processing of Calendula officinalis L. inflorescences

open access: yesSpanish Journal of Agricultural Research, 2014
Manual harvesting of marigold (Calendula officinalis L.) inflorescences results in superior quality, but requires enormous manpower. The objectives of the research were to examine the possibility of mechanized harvesting of marigold inflorescences by ...
Branislav Veselinov   +5 more
doaj   +1 more source

Molecular sieves [PDF]

open access: yesEndeavour, 1964
AbstractThe zeolites form a numerous group of structurally diverse, porous, crystalline aluminosilicates. The naturally‐occurring zeolites arise by hydrothermal action of solutions in basaltic rocks and also as large sedimentary deposits. The naturally‐occurring species have been augmented by a number of synthetic zeolites without any known natural ...
openaire   +1 more source

New estimations for numerical analysis approach to twin primes conjecture [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
This paper provides a better approximation of the functions presented in the article “Numerical Analysis Approach to Twin Primes Conjecture” (see [3]).
Gabriele Di Pietro
doaj   +1 more source

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