Results 21 to 30 of about 166,179,220 (189)

Quartz isolatings in the shales and amphibolites of the East-Ufalei zone as a source for the production of high-purity quartz raw materials (Southern Urals)

Литосфера, 2019
Research subject. In this research, we studied lenses, nodules and interlayers of granulated quartz, which are located in amphibolites and shales in the eastern part of the Ufalei gneso-amphibolite complex.Materials and methods.
M. A. Igumentseva, L. Y. Kabanova, V. N. Anfilogov, M. V. Shtenberg, I. A. Blinov, V. M. Ryzhkov   +5 more
doaj   +1 more source

Evaluation of CAMEL over the Taklimakan Desert Using Field Observations

Land, 2023
Infrared (IR) land surface emissivity (LSE) plays an important role in numerical weather prediction (NWP) models through the satellite radiance assimilation.
Yufen Ma, Wei Han, Zhenglong Li, E. Eva Borbas, Ali Mamtimin, Yongqiang Liu   +5 more
doaj   +1 more source

Influence of spectral interferences on the results of quartz determination by infrared spectrometry

Medycyna Pracy, 2015
Background: Determination of quartz by Fourier transform infrared spectrometry (FTIR) is not specific: the obtained results are influenced by matrix components, some of which cause spectral interference. The aim of the study was to evaluate the effect of
Aleksandra Maciejewska
doaj   +1 more source

The Effect of Gel-Type Contributions in Lime-Sand Bricks, Alkali-Activated Slags and CEMI/CEMIII Pastes: Implications for Next Generation Concretes

Gels, 2021
Lime-sand bricks of different ages were investigated using IR-spectroscopy, thermogravimetry, and X-ray diffraction/scattering. After subtraction of the dominant quartz contribution (80%), the IR spectra show the absorption peaks of the hydrothermally ...
Claus Henning Rüscher, Ludger Lohaus, Fongjan Jirasit, Hervé Kouamo Tchakouté   +3 more
doaj   +1 more source

Predicting ambient aerosol thermal–optical reflectance (TOR) measurements from infrared spectra: extending the predictions to different years and different sites [PDF]

Atmospheric Measurement Techniques, 2016
Organic carbon (OC) and elemental carbon (EC) are major components of atmospheric particulate matter (PM), which has been associated with increased morbidity and mortality, climate change, and reduced visibility.
M. Reggente, A. M. Dillner, S. Takahama
doaj   +1 more source

Oxygen Sensing by the Hybrid Langmuir-Blodgett Films of Iridium(III) Complexes and Synthetic Saponite on the Basis of Energy Transfer

Chemosensors, 2017
An ultra-thin hybrid film of amphiphilic iridium(III) complexes and synthetic saponite was manipulated by means of the modified Langmuir-Blodgett method.
Hisako Sato, Kenji Tamura, Akihiko Yamagishi   +2 more
doaj   +1 more source

The influence of modification on structural, textural and adsorption properties of bentonite [PDF]

Hemijska Industrija, 2008
Natural bentonite clay from the Bogovina locality in Serbia was Na-exchanged and modified using hexadecyll-trimethylammonium bromide as surfactant and organobentonite was obtained.
Jović-Jovičić Nataša R., Milutinović-Nikolić Aleksandra D., Gržetić Ivan A., Banković Predrag T., Marković Branislav Ž., Jovanović Dušan M.   +5 more
doaj   +1 more source

INCREASING THE EFFICIENCY OF USING WOOD BIOMASS BY PROVIDING SPECIAL PROPERTIES

Siberian Journal of Life Sciences and Agriculture, 2023
Background. The search for ways to use logging waste is a distinct scientific direction, due to the large number of their permanent formation. The importance of such studies is associated with the need to reduce the loss of valuable wood raw materials in
Mikhail A. Zyryanov, Sergey O. Medvedev, Alexey A. Kukushkin, Ilya S. Ponomarev, Natalya A. Gavrilova, Darya S. Volkova, Evgeny V. Root   +6 more
doaj   +1 more source

Structure and Vibrational Spectra of thin Films β-Ga₂O₃

Фізика і хімія твердого тіла, 2017
The structure, phase composition and surface morphology of thin films β-Ga₂O₃, obtained by high-frequency ion-plasma sputtering, after annealing at different atmosphere was investigated.
O. M. Bordun, B. O. Bordun, I. I. Medvid,, I. Yo. Kukharskyy, V. V. Ptashnyk, M. V. Partyka   +5 more
doaj   +1 more source

Beneficial effects of a polysaccharide-based grinding aid on magnetite flotation: a green approach

Scientific Reports, 2022
Grinding is the most energy-intensive step in mineral beneficiation processes. The use of grinding aids (GAs) could be an innovative solution to reduce the high energy consumption associated with size reduction.
Vitalis Chipakwe, Tommy Karlkvist, Jan Rosenkranz, Saeed Chehreh Chelgani   +3 more
doaj   +1 more source