Results 21 to 30 of about 524,833 (330)

The effects of livestock grazing on soil water content in a wetland of Mongolia

open access: yesMongolian Journal of Biological Sciences, 2023
Wetlands are critical ecosystems for supporting biodiversity and regulating climate. Over the past century, it has been degraded significantly due to both climatic and human activities. In Mongolia, livestock grazing has drastic impact on this ecosystem.
Sumiya Vandandorj   +5 more
doaj   +1 more source

On Compactness and Sequential Compactness [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
Let X X be a compact space of cardinality less than or equal to ℵ 1 {\aleph _1} . It is shown that X X is sequentially compact.
openaire   +2 more sources

Compaction of granular columns under thermal cycling

open access: yesNational Science Open
Granular materials undergo compaction under periodic temperature fluctuations, leading to various engineering and geological phenomena from landslides to silo compaction.
Luo Yuxuan   +7 more
doaj   +1 more source

Aging dynamics and density relaxation in granular compaction [PDF]

open access: yes, 2001
We present an analytical approach to the out of equilibrium dynamics of a class of kinetic lattice gases under gravity. The location of the jamming transition, the critical exponents, and the scaling functions characterizing the relaxation processes are ...
Barrat A.   +16 more
core   +1 more source

Advances in Powder Metallurgy Soft Magnetic Composite Materials

open access: yesArchives of Metallurgy and Materials, 2017
Powder metallurgy has grown with the expansion of various industry. Automotive industry had the most strong influence. Today, more than 90% of PM products are used in the transportation industry. Development of new materials such as magnetic materials is
Bureš R.   +4 more
doaj   +1 more source

A Low-Cost Self-Test Architecture Integrated With PRESENT Cipher Core

open access: yesIEEE Access, 2019
Cryptographic cores integrated with self-test ability fulfill both data security and reliability requirements of the Internet of Things (IoT) network. However, from the IoT perspective where most devices are resource constrained, a fundamental problem ...
Zeeshan Haider   +3 more
doaj   +1 more source

Review of manufacturers'recommendations on technological capabilities of ejectable excavator vibroplates assessment during soil compaction

open access: yesВестник СибАДИ, 2020
Introduction. Add-on compactors for excavators (ACE hereinafter) are replaceable working equipment for excavators. They are used for soil compaction after the backfill of trenches, wells, foundation cavities and other “narrow spaces” of construction, as ...
I. S. Tiuremnov, D. V. Fedorova
doaj   +1 more source

Compact lumps [PDF]

open access: yesEPL (Europhysics Letters), 2015
We study the presence of lumplike solutions in models described by a single real scalar field with standard kinematics in two-dimensional spacetime. The results show several distinct models that support the presence of bell-shaped, lumplike structures which may live in a compact space.
Bazeia, D., Marques, M. A., Menezes, R.
openaire   +2 more sources

On the spectral factor ambiguity of FIR energy compaction filter banks [PDF]

open access: yes, 2006
This paper focuses on the design of signal-adapted finite-impulse response (FIR) paraunitary (PU) filter banks optimized for energy compaction (EC). The design of such filter banks has been shown in the literature to consist of the design of an optimal ...
Tkacenko, Andre, Vaidyanathan, P. P.
core   +1 more source

SOIL ATTRIBUTES AND INITIAL CORN DEVELOPMENT AS A FUNCTION OF FERTILIZATION AND INTERCROPPING SYSTEMS [PDF]

open access: yesEngenharia Agrícola
Fertilization systems that allow higher sowing speeds have been used in areas of grain production, as well as the use of intercropping to improve soil physical quality and provide better soil cover.
Jorge W. Cortez   +4 more
doaj   +2 more sources

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