Results 31 to 40 of about 34,022 (289)

Sap Flow Velocity in Fraxinus pennsylvanica in Response to Water Stress and Microclimatic Variables

open access: yesFrontiers in Plant Science, 2022
In arid and semiarid regions with water shortage, forestry development is limited by water availability. Understanding how tree sap flow responds to water stress and microclimatic variables is essential for the management of trees and the understanding ...
Yu Su, Xinyu Wang, Yiqiu Sun, Hailong Wu
doaj   +1 more source

Special features of distribution of seismic waves propagation velocity in the Earth crust in the area of uranium deposits (Kirovograd ore area of Ingul megablock of the Ukrainian Shield)

open access: yesГеофизический журнал, 2015
Principal possibility of detailed study of velocity characteristics of crystalline Earth crust in the areas of uranium deposits has been shown. By comparison with geologic data an assumption has been expressed on increased concentration of sodium ...
O.A. Tripolsky   +2 more
doaj   +1 more source

Force deficits by stretches of activated muscles with constant or increasing velocity

open access: yesMedicine & Science in Sports & Exercise, 2002
Force deficits produced by constant (CV) versus increasing velocity (IV) stretches of rat plantar flexor muscles at low and high levels of nerve activation were studied.Twenty repeated stretches were imposed on isometric contractions by ankle rotation from 90 degrees to 40 degrees at 300 degrees.s(-1) and at 3000 degrees.s(-2) during 80-Hz (CV80 and ...
Mark E T, Willems, William T, Stauber
openaire   +3 more sources

Velocity fluctuation and cellular structure of near-limit detonations in rough tubes [PDF]

open access: yes, 2021
Detonation limits are characterized by a decrease in the propagation velocity, cellular structures to lower unstable modes and an increase in the velocity fluctuation of the detonation.
Ren, T.   +5 more
core   +1 more source

A New Analytical Wake Model for Yawed Wind Turbines

open access: yesEnergies, 2018
A new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies.
Guo-Wei Qian, Takeshi Ishihara
doaj   +1 more source

Self-similarity Characteristics of Vertical Axis Wind Turbine Wakes [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Wake generated by wind turbine can greatly influence the performance of downstream turbine. To better understand the wake self-similarity characteristics of vertical axis wind turbine (VAWT), the shear stress transport (SST) turbulence model with the ...
X. Y. Zhang   +5 more
doaj   +1 more source

JUMP ABILITY AND FORCE-VELOCITY PROFILE IN RHYTHMIC GYMNASTICS

open access: yesScience of Gymnastics Journal, 2023
The jump is one of the main body elements in Rhythmic Gymnastics (RG). To perform it correctly, gymnasts must develop appropriate force and velocity levels to reach enough jump height to show the body shape during flight, as defined by the RG Code of ...
Luciana Ferreira Melo de Sá   +3 more
doaj   +1 more source

Applicability of Wake Models to Predictions of Turbine-Induced Velocity Deficit and Wind Farm Power Generation

open access: yes, 2022
Turbine-induced velocity deficit is the main reason to reduce wind farm power generation and increase the fatigue loadings. It is meaningful to investigate turbine-induced wake structures by a simple and accurate method. In this study, a series of single
Yiqing Xiao   +4 more
core   +1 more source

Impaired Velocity Processing Reveals an Agnosia for Motion in Depth [PDF]

open access: yes, 2016
Many individuals with normal visual acuity are unable to discriminate the direction of 3-D motion in a portion of their visual field, a deficit previously referred to as a stereomotion scotoma. The origin of this visual deficit has remained unclear.
Rokers, Bas   +6 more
core   +2 more sources

Effect of blade number on flow around straight-bladed vertical axis wind turbine

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The influence on performance during the revolution of a straight-bladed vertical axis wind turbine (VAWT) is discussed, focusing on the effect of the blade number.
Qing'an LI   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy