Results 1 to 10 of about 109,058 (167)

Influence of the Total Porosity on the Properties of Sintered Materials—A Review [PDF]

open access: yesMetals, 2021
Porosity is a characteristic present in most sintered materials, full densification only being achieved in special cases. For some sintered materials, porosity is indeed a desired characteristic, serving for the intended application of the material.
Fátima Ternero   +4 more
doaj   +5 more sources

Vitrified bond diamond grinding wheel based on hollow corundum microspheres

open access: yesJin'gangshi yu moliao moju gongcheng, 2022
The effect of the content and the size (0.2, 0.4, 0.6 mm) of the hollow corundum microspheres on the total porosity, the flexural strength, the hardness and the microstructure of vitrified bond was investigated.
Chuang XUAN   +3 more
doaj   +1 more source

Factors Affecting the Relationship Between Total Porosity and Electrical Resistivity for Concrete Repair Materials [PDF]

open access: yesEngineering and Technology Journal, 2008
The paper examines the properties of five different types of repair and substratematerials, including conventional mortar, fly ash mortar, silica fume mortar, conventionalconcrete substrate, and high-performance concrete substrate materials.
Maan Salman Hassan
doaj   +1 more source

Effects of wood extraction using farm tractor on soil physical properties (Case study: Gorazbon district in Khyrud forest) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2014
Tractor-based logging systems are the most common type of small-scale equipments. Farm tractors equipped with a 2-wheel trailer are mostly used to perform forwarding operations of pulpwoods and fuelwoods in the Hyrcanian forests of Iran.
Meghdad Jourgholami   +3 more
doaj   +1 more source

AGRO-PHYSICAL DEGRADATION OF IRRIGATED SYRT DARK-CHESTNUT SOILS OF SARATOV TRANSVOLGA REGION

open access: yesНаучный журнал Российского НИИ проблем мелиорации, 2019
The aim of the research was to study changes in the agrophysical properties of dark chestnut soils as a result of long-term irrigation. The research was carried out at the Ershovskaya Experimental Station of irrigated agriculture of Research Institute of
L. G. Romanova   +2 more
doaj   +1 more source

The impact of carbonate texture on the quantification of total porosity by image analysis [PDF]

open access: yesComputers & Geosciences, 2015
Image analysis is widely used to quantify porosity because, in addition to porosity, it can provide quantitative pore system information, such as pore sizes and shapes. Despite its wide use, no standard image analysis workflow exists. When employing image analysis, a workflow must be developed and evaluated to understand the methodological pitfalls and
Thomas J. Haines   +4 more
openaire   +2 more sources

Compressibility of Oxisol aggregates under no-till in response to soil water potential Compressibilidade de agregados de Latossolo Vermelho sob plantio direto em resposta ao potencial da água do solo

open access: yesRevista Brasileira de Ciência do Solo, 2009
The system of no-till sowing stands out as being a technology that suits the objectives of more rational use of the soil and greater protection against the erosion. However, through till, any of it, occurs modifications of the soil's structure.
João Tavares Filho, Daniel Tessier
doaj   +1 more source

Particle Densities of Horticultural Substrates

open access: yesHortScience, 2022
The heterogeneity of horticultural substrates makes basic physical characteristics, such as total porosity and particle density, difficult to estimate. Due to the material source, inclusion of occluded pores, and hydrophobicity, particle density values ...
Paul C. Bartley III   +3 more
doaj   +1 more source

Green waste biochar effects on sandy soil physicochemical properties

open access: yesJournal of Oasis Agriculture and Sustainable Development, 2022
The organic amendment of degraded soil in South East of Tunisia was used to restore the chemical, and physical properties of soil quality investigated in this study.
Habib Lamourou   +4 more
doaj   +2 more sources

The effect of tillage methods on the cellulose-decomposing activity of the soil and on crop yields in crop rotations

open access: yesАграрная наука Евро-Северо-Востока, 2023
In the conditions of the Chuvash Republic in a long-term stationary experiment there has been studied the effect of crop rotations (grain- fallow and green manure) and methods of primary tilling of soil (by the plow PLN-3-35 to the depth of 24-26 cm; by ...
D. A. Dementiev, A. A. Fadeev
doaj   +1 more source

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