Results 41 to 50 of about 1,997,150 (223)

Characteristics of Air Flow and Heat Transfer in Serpentine Condenser Pipes with Attached Convection Plates in Open Channel

open access: yesInternational Journal of Technology, 2020
Many efforts have been made to reduce the energy consumption of household refrigerators. One method is to place the pipe condenser to increase the rate of heat release.
Edy Susanto   +5 more
doaj   +1 more source

Complex of algorithms for fast determination of the parameters of motion of high-speed vessels in the digital signal processing system of a space synthetic aperture radar

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2023
The article presents the main considerations for determining the tangential velocity of high-speed vessels in the digital signal processing system of a space synthetic aperture radar with an amplitude-phase program discriminator in the azimuth channel ...
S. N. Gusev, A. V. Moroz
doaj   +1 more source

On the influence of the tangential solar-motion component [PDF]

open access: yesSerbian Astronomical Journal, 2002
The influence of the tangential component of the solar motion (towards l = 90o, b = 0o) corrected for the value of the asymmetric drift, on the galactocentric orbits of selected nearby stars is studied.
Ninković Slobodan D.
doaj   +1 more source

Exact General Relativistic Perfect Fluid Disks with Halos [PDF]

open access: yes, 2003
Using the well-known ``displace, cut and reflect'' method used to generate disks from given solutions of Einstein field equations, we construct static disks made of perfect fluid based on vacuum Schwarzschild's solution in isotropic coordinates. The same
A.H. Taub   +22 more
core   +2 more sources

A new forecasting method for failure time of creep landslide based on nonlinear creep behavior and new pre-warning criterion

open access: yesFrontiers in Earth Science, 2022
The forecast of failure time of unstable slope and the definition of early warning threshold are very important for preventing landslide disaster and reducing its losses.
Shuo Zhang   +9 more
doaj   +1 more source

Computational and qualitative aspects of motion of plane curves with a curvature adjusted tangential velocity [PDF]

open access: yes, 2007
In this paper, we investigate a time‐dependent family of plane closed Jordan curves evolving in the normal direction with a velocity that is assumed to be a function of the curvature, tangential angle, and position vector of a curve. We follow the direct
D. Ševčovič, S. Yazaki
semanticscholar   +1 more source

Targets’ Radial and Tangential Velocities Estimation Based on Vortex Electromagnetic Waves

open access: yesRemote Sensing, 2022
The orbital angular momentum (OAM) of a vortex electromagnetic wave (VEW) has gained attention as a newly explored information carrier. OAM modes provide vortex azimuth resolution, which is a new degree of freedom (DOF) in radar application. Due to the special characteristics of the vortex azimuth domain, VEW shares compound Doppler information of two ...
Caipin Li   +7 more
openaire   +2 more sources

Image analysis for velocity profile estimation in A-SOFT hybrid rocket combustor

open access: yesJournal of Fluid Science and Technology, 2018
Altering-intensity Swirling-Oxidizer-Flow-Type (A-SOFT) hybrid rocket engine (HRE) was proposed as a technique to solve problems of current hybrid rockets.
Nobuhiro KIMURA   +3 more
doaj   +1 more source

Experimental Study on Flocculation Effect of Tangential Velocity in a Cone-Plate Clarifier

open access: yesSeparations, 2021
A large number of particles with small size and light density in mine water are difficult to remove by traditional separation equipment. In order to improve the efficiency of mine water treatment, a cone-plate clarifier is proposed in this paper.
Yulong Zhang   +5 more
doaj   +1 more source

Kinematics of Spiral Arm Streaming in M51 [PDF]

open access: yes, 2007
We use CO and H alpha velocity fields to study the gas kinematics in the spiral arms and interarms of M51 (NGC 5194), and fit the 2D velocity field to estimate the radial and tangential velocity components as a function of spiral phase (arm distance). We
Begeman K. G.   +14 more
core   +2 more sources

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