Results 11 to 20 of about 845,240 (304)

Defining dyspepsia

open access: yesSouth African Family Practice, 1997
No abstract available.
Garth Brink, Robert Heading
doaj   +1 more source

Vestibular heading discrimination and sensitivity to linear acceleration in head and world coordinates [PDF]

open access: yes, 2010
Effective navigation and locomotion depend critically on an observer\u27s ability to judge direction of linear self-motion, i.e., heading. The vestibular cue to heading is the direction of inertial acceleration that accompanies transient linear movements.
Angelaki, Dora E   +3 more
core   +2 more sources

Effect of process factors on solidification process of 10B21 steel bloom

open access: yesMetalurgija, 2022
In this study, Finite Element Method (FEM) was used to simulate the solidification process of a large blank (280 mm × 325 mm) under different technological conditions.
X. K. Yang, D. Xu, B. Zheng, X. Yin
doaj  

Cause analysis and improvement measures of steel-heaping in wire rods production

open access: yesMetalurgija, 2022
Based on the composition detection results of steel inclusions, it is found that the steel-heaping reason of cold heading wire is caused by the slag entrapment in steelmaking process. In view of the above reasons, by controlling the fluctuation of liquid
L. Zheng, D. Xu, Y. C. Ren, B. Zheng
doaj  

Do Seabirds Control Wind Drift during Their Migration across the Strait of Gibraltar? A Study Using Remote Tracking by Radar

open access: yesRemote Sensing, 2022
This study presents data on the directional flying behaviour of the five most abundant seabird species migrating across the Strait of Gibraltar in relation to the wind, as observed from the north coast, based on radar tracking, and identified to species ...
Gonzalo Muñoz Arroyo   +1 more
doaj   +1 more source

Head-to-Head Polymers XXXV. Head-to-Head Poly(2-vinylnaphthalene) [PDF]

open access: yesPolymer Journal, 1986
Head-to-head poly(2-vinylnaphthalene) was prepared in five steps from 2-naphthylacetic acid. The methyl ester was brominated with N-bromosuccinimide and 2(2-naphthyl)2-bromoacetate treated with a copper/zinc couple, which gave dimethyl 2,3-di(2-naphthyl)succinate in moderate yield.
Masato Nanasawa, Liping Hu, Otto Vogl
openaire   +1 more source

Determination of USV’s Direction Using Satellite and Fluxgate Compasses and GNSS-RTK

open access: yesSensors, 2022
The measurement of a mobile object’s movement direction is performed by means of various analogue and digital devices, including both autonomous and non-autonomous ones.
Artur Makar
doaj   +1 more source

Integration Mechanisms for Heading Perception [PDF]

open access: yes, 2010
Previous studies of heading perception suggest that human observers employ spatiotemporal pooling to accommodate noise in optic flow stimuli. Here, we investigated how spatial and temporal integration mechanisms are used for judgments of heading through ...
Beardsley, Scott A.   +3 more
core   +2 more sources

Effect of Football Size and Mass in Youth Football Head Impacts

open access: yesProceedings, 2020
In youth association football, the use of different size and/or mass footballs might represent a feasible intervention for addressing heading impact severity and player safety concerns.
Marcus Dunn, Dyfan Davies, John Hart
doaj   +1 more source

Improved Crop Biomass Algorithm with Piecewise Function (iCBA-PF) for Maize Using Multi-Source UAV Data

open access: yesDrones, 2023
Maize is among the most important grain crops. Aboveground biomass (AGB) is a key agroecological indicator for crop yield prediction and growth status monitoring, etc.
Lin Meng   +11 more
doaj   +1 more source

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