Results 21 to 30 of about 71,351 (309)

Estudo comparativo da queima rápida com a queima tradicional nas propriedades de materiais cerâmicos de base argilosa Comparative study of fast firing with traditional firing on the properties of ceramic clay raw materials

open access: yesCerâmica, 2009
O estudo do ciclo de queima de materiais cerâmicos tradicionais é de grande interesse industrial, visto que são processos que utilizam grande quantidade de energia.
R. P. S. Dutra   +5 more
doaj   +1 more source

Keggin-Al13 Polycations: Influence of Synthesis and Intercalation Parameters on the Structural Properties of Al-Pillared Clays

open access: yes, 2021
Pillared clays are interesting materials with applications in catalysis and adsorption processes. To obtain these materials, several preparation procedures are necessary and must be optimized to tune the final properties of the resulting pillared clay ...
Janaina A. Prasniski   +3 more
core   +1 more source

Interrelation between compressibility and permeability of reconstituted sandy clays with different sand fractions

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
It has been well recognized that sand particles significantly affect the mechanical properties of reconstituted sandy clays, including the hosted clay and sand particles.
Mengying Gao, Junjun Ni, Zhenshun Hong
doaj   +1 more source

Vertisols properties and classification in relation to parent material differentiation near Strzelin (SW Poland)

open access: yesSoil Science Annual, 2019
Vertisols are characterized by high content of clay fraction that affects their specific morphological and physical features. The shrink-swell phenomena of clayey materials under specific moisture regime cause formation of cracks, wedge-shaped structural
Dudek Michał   +3 more
doaj   +1 more source

Some Kentucky clays, including kaolinic, plastic and fire clays: clays in several parts of Kentucky, with some account of sands, marls and limestones [PDF]

open access: yes, 1905
The bulletin is preliminary in character and is offered now simply in order to meet the urgent calls for all information concerning our clays that is at present available. A more comprehensive report, in which not only the geology and distribution of our
Gardner, James H, Foerste, Aug
core   +1 more source

Numerical Analysis of Test Embankment on Soft Ground Using Multi-Laminate Type Model with Destructuration / Analiza Numeryczna Nasypu Drogowego Posadowionego Na Gruncie Słabonosnym Z Zastosowaniem Modelu Wielopłaszczyznowego Z Destrukturyzacja

open access: yesArchives of Civil Engineering, 2011
W artykule przedstawiono model wielopłaszczyznowy (multi-laminate) uwzgledniajacy anizotropie struktury słabonosnych gruntów drobnoziarnistych. Anizotropia indukowana naprezeniem, która otrzymuje sie przy zastosowaniu modeli wielopłaszczyznowych, jest ...
Cundi M.
doaj   +1 more source

Clay mineralogy in mylonite weathering products from Njimom (west Cameroon): origin and terracotta suitability

open access: yesDiscover Geoscience
This study investigated the mineralogical assemblage of weathering products developed on mylonite rocks in west Cameroon. Smectite and vermiculite occurrence was studied, particularly to emphasize its origin and the potential of the samples in terracotta
A. N. Nzeukou   +5 more
doaj   +1 more source

Boric Acid Supported on Montmorillonites as Catalysts for Synthesis of 2,3-dihydroquinazolin-4(1H)-ones [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
Synthesis of 2,3-dihydroquinazolin-4(1H)-ones using H3BO3/montmorillonite K10 (H3BO3/mont K10) catalyst has been reported. H3BO3/mont K10 and H3BO3/mont K30 have been prepared and used as catalysts in the reaction between anthranilamide and benzaldehyde ...
Mahesh Kancherla   +3 more
doaj  

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

MINERAL ABSORBENT EFFIECIENCY ON THE PETROLEUM SPILLS REMOVAL

open access: yesStudia Universitatis Babes-Bolyai Chemia
Mineral absorbents are of great interest for the oil spills removal. Therefore, current investigation tests the removal ability of three commercial products: Zeolit Spectrum, Favisan Clay and professional oil spills removal Adabline II OS.
Daniel ARGHIROPOL   +5 more
doaj   +1 more source

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