Results 21 to 30 of about 6,253,748 (354)

Synthesis of Magnetic Metal-Organic Frame Material and Its Application in Food Sample Preparation

open access: yesFoods, 2020
A variety of contaminants in food is an important aspect affecting food safety. Due to the presence of its trace amounts and the complexity of food matrix, it is very difficult to effectively separate and accurately detect them.
Jingying Yang   +6 more
doaj   +1 more source

An Electrochemical Sensor Based on a Nitrogen-Doped Carbon Material and PEI Composites for Sensitive Detection of 4-Nitrophenol

open access: yesNanomaterials, 2021
A glassy carbon electrode (GCE) was modified with nitrogen-doped carbon materials (NC) and polyethyleneimine (PEI) composites to design an electrochemical sensor for detecting 4-nitrophenol (4-NP).
Xue Nie   +3 more
doaj   +1 more source

An effective palynological preparation procedure using hydrogen peroxide [PDF]

open access: yes, 2007
Most pre-Quaternary palynology samples are currently prepared by demineralization of the sediment/sedimentary rock matrix using hydrochloric and hydrofluoric acids (HCl and HF respectively).
Kyffin-Hughes, Jane E.   +2 more
core   +2 more sources

Fe thermomechanics and material sampling points [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering, 1987
The thermomechanics of finite elements of continuous media is discussed. The novel key concept introduced is that of material sampling points attributed to each finite element. Similar to representing the spatial interactions by a finite number of nodal quantities, the state of a finite element is represented by the set of local states at its sampling ...
openaire   +2 more sources

Sublimable materials facilitate the TEM sample preparation of oil-soluble nanomaterials

open access: yesApplied Microscopy, 2020
Sample preparation is significantly important to the high-resolution transmission electron microscopy (HRTEM) characterization of nanomaterials. However, many general organic solvents can dissolve the necessary organic polymer support layer in TEM grid ...
Yu-Hao Deng
doaj   +1 more source

Optical Characterization of ALD-Coated Nanoporous Alumina Structures: Effect of Sample Geometry or Coated Layer Material

open access: yesMicromachines, 2023
Optical characterization of nanoporous alumina-based structures (NPA-bSs), obtained by ALD deposition of a thin conformal SiO2 layer on two alumina nanosupports with different geometrical parameters (pore size and interpore distance), was performed by ...
Ana Laura Cuevas   +5 more
doaj   +1 more source

Interference of the Spectral Line Mζ in the M Energy Level Series of Ce on the F Element Kα Peak in Monazite Samples

open access: yesYankuang ceshi
Quantitative analysis of the ultra-light element fluorine (F) has always been one of the difficulties in electron probe microanalysis (EPMA). High-resolution qualitative analysis and proper subtraction of spectral interferences from major elements are ...
Suwen QIU   +5 more
doaj   +1 more source

RANdom SAmple Consensus (RANSAC) algorithm for material-informatics: application to photovoltaic solar cells

open access: yesJournal of Cheminformatics, 2017
An important aspect of chemoinformatics and material-informatics is the usage of machine learning algorithms to build Quantitative Structure Activity Relationship (QSAR) models. The RANdom SAmple Consensus (RANSAC) algorithm is a predictive modeling tool
Omer Kaspi   +2 more
doaj   +1 more source

INNOVATIVE PROCESS LINE FOR MATERIAL SAMPLE PREPARATION

open access: yesSustainable Extraction and Processing of Raw Materials Journal
. The successful establishment and sustainable development of mining enterprises depends on a number of factors, including geological research, management of mineral extraction and processing processes, and sample preparation technology.
O. V. Fedoskina   +4 more
doaj   +1 more source

Modern Methods of Pre-Treatment of Plant Material for the Extraction of Bioactive Compounds

open access: yesMolecules, 2022
In this review, recent advances in the methods of pre-treatment of plant material for the extraction of secondary metabolites with high biological activity are presented.
Aneta Krakowska-Sieprawska   +4 more
doaj   +1 more source

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