Results 21 to 30 of about 3,186,656 (314)
Investigation of heat exchange processes in vertically arranged heat exchangers
Қарағанды университетінің хабаршысы. Физика сериясы, 2019 Today, in many countries, electricity is produced in a variety of ways, depending on current trends. The use of heat pump technology in heat energy development is one of the most efficient energetic methods. In order to save energy, it makes possible to
K.M. Shaimerdenova +3 more
doaj +1 more source
Theoretical study of the influence of a variable ground resistance by position tracked chassis in motion [PDF]
Научно-технический вестник Брянского государственного университета, 2023 The position of the tracked chassis of a vehicle in motion often determines the accuracy of the creation of related structures during construction and road work.
Goncharov K.A.
doaj +1 more source
Crystals, 2022 During ground-based solidification, buoyancy flow can develop by the density difference in the hypoeutectic type of the alloys, such as Al-7 wt% Si alloy.
András Roósz +7 more
doaj +1 more source
Normalized ground states for the NLS equation with combined nonlinearities [PDF]
Journal of Differential Equations, 2018 We study existence and properties of ground states for the nonlinear Schrodinger equation with combined power nonlinearities \[ -\Delta u= \lambda u + \mu |u|^{q-2} u + |u|^{p-2} u \qquad \text{in $\mathbb{R}^N$, $N \ge 1$,} \] having prescribed mass \[ \
Nicola Soave
semanticscholar +1 more source
Near-optimal ground state preparation [PDF]
Quantum, 2020 Preparing the ground state of a given Hamiltonian and estimating its ground energy are important but computationally hard tasks. However, given some additional information, these problems can be solved efficiently on a quantum computer. We assume that an
Lin Lin, Yu Tong
semanticscholar +1 more source
INTERACTION ANALYSIS OF THE CONSOLE KNIFE SURFACE WITH THE SOIL
Вестник СибАДИ, 2020 Introduction. In Russia the use of cyclical equipment to remove the top layer of the soil is not feasible. The problem of the roads construction accelerating, improving their quality can be solved by applying a continuous action unit to form a litter ...
V. A. Nikolaiev
doaj +1 more source
EFFORT OF STEEL PIPE JACKING IN TERMS OF IMPERFECTION PIPES AND HETEROGENEITY OF GROUND
Nauka ta progres transportu, 2016 Purpose. The article presents problem of the influence of local inhomogeneities of ground on the internal forces in the steel pipe. Methodology. The authors presented the differences in the distributions of earth pressures for the pipes.
K. Górski, R. L. Ignatowicz
doaj +1 more source
A Survey of Air-to-Ground Propagation Channel Modeling for Unmanned Aerial Vehicles [PDF]
IEEE Communications Surveys and Tutorials, 2018 In recent years, there has been a dramatic increase in the use of unmanned aerial vehicles (UAVs), particularly for small UAVs, due to their affordable prices, wide availability, and relative ease of operability.
W. Khawaja +4 more
semanticscholar +1 more source
Erica Tietze-Conrat, “On Drawings” [PDF]
Journal of Art Historiography, 2020 Originally published as ‘Ueber Handzeichnungen’, Kunstgeschichtliche Anzeigen Beiblatt de Mitteilungen des Instituts für österreichische Geschichtsforschung, edigiert von Max Dvořák, Jahrgang 1913 Heft 1/2, Innsbruck: Wagner 1913, pp.
Karl Johns
doaj
Ground Level Isoprenoid Exchanges Associated with Pinus pinea Trees in A Mediterranean Turf
Atmosphere, 2020 The emissions of isoprenoids, a kind of biogenic volatile organic compounds (BVOCs), from soils is not well characterized. We quantified the exchange of isoprenoids between soil with litter and atmosphere along a horizontal gradient from the trunks of ...
Zhaobin Mu +2 more
doaj +1 more source