Results 1 to 10 of about 16,603 (168)

Expansibility of vermiculite (Santa Luzia, Brazil) irradiated with microwave [PDF]

open access: yesCerâmica, 2021
The effect of microwave heating on the expansion of vermiculite was studied at a level of 700 W for 4 min exposure time and compared with raw vermiculite.
F. M. N. Silva   +5 more
doaj   +1 more source

Synergistic effect of vermiculite and submerged plants on lake sediments

open access: yesWater Biology and Security, 2023
The synergistic effect of vermiculite and the submerged macrophytes Vallisneria spiralis and Hydrilla verticillata on lake sediment was studied using diffusive gradients in thin films (DGT) technology. The dynamics of phosphorus (P) fractions in sediment,
Rou Wang   +12 more
doaj   +1 more source

Properties of fire-retardant vermiculite-concrete composite and fine-grained concrete for two-layer reinforced cement structures

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. Development of compositions of fire-retardant vermiculite-concrete composites for reinforced cement structures. Investigation of the properties of fire-retardant vermiculite-concrete composite and fine-grained concrete for two-layer reinforced
T. A. Khezhev   +4 more
doaj   +1 more source

Effects of exfoliation temperature for vermiculate aggregates modified by sodium ions on thermal and comfort properties of a new generation cementitious mortar

open access: yesJournal of Sustainable Construction Materials and Technologies, 2022
Vermiculite exfoliation is based on the principle when water between the layers evaporate, and the crystal layers spread out pressured by the steam. As a result, elongated, curved particles are formed.
Lütfullah Gündüz, Şevket Onur Kalkan
doaj   +1 more source

Comparative Study between Effect of some Growth Media on the Productivity and Quality of Lettuce and Red Cabbage Yields [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2019
Two pot experiments were conducted at Soil Improvement and Conservation Research Dep. at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, North Nile Delta, Egypt during winter season 2018/2019.
N. I. K. Abd-Elkader   +3 more
doaj   +1 more source

Acid Leaching Vermiculite: A Multi-Functional Solid Catalyst with a Strongly Electrostatic Field and Brönsted Acid for Depolymerization of Cellulose in Water

open access: yesMolecules, 2022
Vermiculite is a natural mineral. In this study, vermiculite and acid-activated vermiculite was used as a solid acid catalyst for the hydrolysis of cellulose in water. The catalysts were characterized by XRD, FT-IR, and BET.
Xingtao Chen   +4 more
doaj   +1 more source

The development of premix technology with vermiculite filler

open access: yesАлматы технологиялық университетінің хабаршысы, 2023
In achieving a high level of biological usefulness of feeding poultry, the enrichment of compound feed with a complex of biologically active additives – premixes is of decisive importance. The organization of the production of high-quality premixes is an
S. T. Zhienbaeva   +2 more
doaj   +1 more source

Utilization of Vermiculite for Solving Hematite Sagging in Water-Based Drilling Fluids

open access: yesGeofluids, 2022
The sagging phenomenon of solids, such as hematite, in drilling fluids is commonly experienced when drilling at elevated temperature conditions presenting operational and well control issues.
Salem Basfar   +2 more
doaj   +1 more source

Implementation of iceplant production under semi-controlled conditions

open access: yesRevista de la Facultad de Ciencias Agrarias, 2021
Mesembryanthemum crystallinum is considered a drought and saline stress-tolerant plant with many biological activities that has been revalued as cool flavouring plant.
María del Carmen Rodríguez-Hernández   +1 more
doaj   +1 more source

Application of Nanotechnology in Oil and Gas Industry: Synthesis and Characterization of Vermiculite-Based Nano-adsorbent and its Application in Produced Water Treatment

open access: yesChemical Engineering Transactions, 2020
Vermiculite-based nano-adsorbent was successfully prepared via solution casting method from vermiculite that was first exfoliated by thermal shock followed by ultrasonic treatment.
Afonso D. Macheca, Bonaventure Uwiragiye
doaj   +1 more source

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