Results 21 to 30 of about 39,536 (308)

Research Progress on New Types of H2TiO3 Lithium-Ion Sieves: A Review

open access: yesMetals, 2023
The advantages of new types of H2TiO3 lithium-ion sieves, including excellent adsorption performance, high-efficiency Li+-ion selectivity, reliable regeneration, environmental friendliness, and easy preparation, have attracted considerable attention ...
Ying Li, Zhen Yang, Peihua Ma
doaj   +1 more source

On the numbers that determine the distribution of twin primes [PDF]

open access: yesSurveys in Mathematics and its Applications, 2018
This paper is about a class of numbers indirectly connected to the twin primes, which have not been investigated so far. With the help of these numbers, we look at the set of twin primes from a different perspective and bring the reader's attention to ...
Antonie Dinculescu
doaj  

Technical aspects of circulating tumor cells (CTC) isolation using molecular sieve [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2017
The article presents the characteristics of circulating tumor cells (CTC) in the context of their enrichment. It presents the possibility of the use of molecular sieves in CTC isolation.
Paweł Pastuszka   +4 more
doaj   +1 more source

Statistical analysis of maximum likelihood estimator images of human brain FDG PET studies [PDF]

open access: yes, 1993
The work presented evaluates the statistical characteristics of regional bias and expected error in reconstructions of real positron emission tomography (PET) data of human brain fluoro-deoxiglucose (FDG) studies carried out by the maximum likelihood ...
Coakley, Kevin J.   +4 more
core   +1 more source

Condensation droplet sieve

open access: yesNature Communications, 2022
AbstractLarge droplets emerging during dropwise condensation impair surface properties such as anti-fogging/frosting ability and heat transfer efficiency. How to spontaneously detach massive randomly distributed droplets with controlled sizes has remained a challenge.
Chen Ma   +7 more
openaire   +4 more sources

STUDY OF THE PROCESS OF CALIBRATION OF CONFECTIONERY SUNFLOWER SEEDS

open access: yesHarčova Nauka ì Tehnologìâ, 2018
The aim of the research was to make the mechanical and technological process of calibrating confectionery sunflower seeds with a vibrating sieve more effective by giving reasons for its rational methodical and technological parameters.
I. Shevchenko, E. Aliiev
doaj   +1 more source

Structural and Textural Properties of Al/Cu- and Al/Zn-Pillared Clays for Ethanol Conversion

open access: yesCrystals
A montmorillonite sample was pillared using mixed solutions of Al/Cu and Al/Zn as the pillaring agent. Al/Cu- and Al/Zn-pillared clays were applied in an ethanol conversion reaction.
Lamara M. dos Santos   +4 more
doaj   +1 more source

Application Research on the Adsorption of Cadmium Ion in Wastewater by Zeolite Molecular Sieve

open access: yesChemical Engineering Transactions, 2018
In this paper, the synthetic zeolite molecular sieve is used as the adsorbent to study the application of zeolite molecular sieves for the adsorption of cadmium ions in wastewater.
Minghua Wang, Honglan Cai, Jiang Zhang
doaj   +1 more source

Separation of steranes and hopanes by domestic X-type molecular sieves

open access: yesShiyou shiyan dizhi, 2021
Domestic 10X-type and 13X-type molecular sieves were used for the adsorption and desorption experiments of steranes and hopanes, and their stable carbon isotopic fractionation by the two kinds of molecular sieves during separation process was discussed ...
Erting LI   +7 more
doaj   +1 more source

The affine sieve

open access: yesJournal of the American Mathematical Society, 2013
The authors establish the main saturation conjecture connected with executing a Brun sieve in the setting of an orbit of a group of affine linear transformations. This is carried out under the condition that the Zariski closure of the group is Levi-semisimple. It is likely that this condition is also necessary for such saturation to hold.
Golsefidy, Alireza Salehi, Sarnak, Peter
openaire   +4 more sources

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