Results 21 to 30 of about 4,915,641 (298)

Aspects of Self-Organization of Tribological Stressed Lubricating Greases

open access: yesLubricants, 2020
Lubricating greases are markedly visco-elastic materials. Stressed by a friction process, this special material shows a drop of a measured shear stress or viscosity.
Erik Kuhn
doaj   +1 more source

ALUMINUM ALLOY AA2024 COATED WITH ZrO2 USING A SOL-GEL-ASSISTED DIP-COATING TECHNIQUE AND ITS CORROSION PERFORMANCE [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
Aluminum alloys has been widely used in most of engineering applications, such as marine industries and aerospace, due to its light weight and durability properties. In the aggressive environment, aluminum alloy becomes chemically reactive and losses its
VEANUGA GANAPATHY   +6 more
doaj  

THE SALT PROBLEM IN SOIL: AN OVERVIEW

open access: yesEQA, 2010
One of the most serious problems for the agriculture in many countries of the world is represented by the presence of excessive amounts of soluble salts in the soil.
Roberto Aringhieri
doaj   +1 more source

Degradation of soil structure by welding — a micromorphological study [PDF]

open access: yesCATENA, 1994
Abstract In 1985 a plot study was started on sloping cultivated loess soils in South-Limbourg (The Netherlands) to evaluate the effects of various cropping systems of fodder maize on runoff, soil loss and crop yield under natural rainfall. To monitor degradation of soil structure including crust formation, undisturbed vertical samples (15 × 7 cm) for
Kwaad, F.J.P.M., Mucher, H.J.
openaire   +3 more sources

Compactação de solos cultivados com cana-de-açúcar: II -quantificação das restrições às funções edáficas do solo em decorrência da compactação prejudicial Compaction of soils cultivated with sugarcane: II - quantification of restrictions to soil edaphic functions as a result of harmful compaction

open access: yesEngenharia Agrícola, 2010
A redução do período de entressafra canavieiro pode levar à disseminação da compactação do solo, em decorrência da colheita mecanizada da cana-de-açúcar na estação chuvosa.
Eduardo da C. Severiano   +5 more
doaj   +1 more source

Guided Waves in Ship Structural Health Monitoring – A Feasibility Study

open access: yesPolish Maritime Research, 2023
Ships and offshore structures operate in a severe corrosion degradation environment and face difficulty in providing long-lasting corrosion protection. The Classification Societies recommend regular thickness measurements leading to structural component ...
Roch Emil   +3 more
doaj   +1 more source

Degradation of MIOS memory structures [PDF]

open access: yesRevue de Physique Appliquée, 1978
A comparative study of window shift during write/erase cycling of MAOS and MNOS devices shows strong dependence in the shift on SiO2 thickness, the MNOS devices showing better stability. Their combination MANOS (O2 annealed) is comparable in this respect to MNOS. Results on the increase of fast surface state density and on charge retention are reported.
El-Dessouky, A., Balk, P.
openaire   +2 more sources

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Application of a Thermodynamic Concept for the Analysis of Structural Degradation of Soap Thickened Lubricating Greases

open access: yesLubricants, 2018
Lubricating greases are special lubricants with a wide range of application. The tribologically stressed grease is used as tribological system and finally modeled as an open thermodynamic system.
Erik Kuhn
doaj   +1 more source

The structure of degradable quantum channels [PDF]

open access: yesJournal of Mathematical Physics, 2008
Degradable quantum channels are among the only channels whose quantum and private classical capacities are known. As such, determining the structure of these channels is a pressing open question in quantum information theory. We give a comprehensive review of what is currently known about the structure of degradable quantum channels, including a number
Cubitt, Toby S.   +2 more
openaire   +2 more sources

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