Results 41 to 50 of about 692,464 (289)

Angular acceleration compensation guidance law for passive homing missiles

open access: yesOpen Astronomy, 2022
Proportional navigation guidance law (PNG) is widely used for passive homing missiles. But PNG often suffers from inaccurate tracking of target or even failure when the target is maneuvering quickly or releasing artificial decoys.
Li Jixin   +3 more
doaj   +1 more source

Research on H7006C Angular Contact Ball Bearing Slipping Behavior under Operating Conditions

open access: yesLubricants, 2023
During operation, angular contact ball bearings exhibit slipping behavior, which accelerates bearing wear and reduces the bearing’s overall service life.
Fang Yang   +4 more
doaj   +1 more source

Vertical evolution of auroral acceleration at substorm onset [PDF]

open access: yes, 2009
This study describes the onset process of auroral substorms in connection with the vertical evolution of auroral particle acceleration, on the basis of auroral kilometric radiation (AKR) dynamics.
Morioka, A.   +17 more
core   +2 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Research on lever arm effect error compensation method for strap-down inertial navigation system of shearer

open access: yesGong-kuang zidonghua, 2019
In view of problem that existing mechanical compensation methods of lever arm effect ca't get angular acceleration information in real time, an improved method of lever arm effect error compensation was proposed on the basis of analyzing cause of lever ...
SI Zhuoyin, LI Wei, TONG Junling
doaj   +1 more source

MagmaFlow: A desktop platform for artificial intelligence‐driven expression analysis

open access: yesFEBS Open Bio, EarlyView.
MagmaFlow is a free, no‐code platform for gene expression analysis. It generates interactive volcano plots, links genes to literature, pathways, and diseases, prioritizes candidates using millions of publications, identifies affected biological processes, builds network diagrams, and exports publication‐ready figures and reports for macOS and Windows ...
Carlos E. Buss   +7 more
wiley   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

open access: yesFEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer   +7 more
wiley   +1 more source

Application of Error-compensation in the Mapping of Cam Mechanism

open access: yesJixie chuandong, 2015
The data preprocessing method of the cam profile and data error compensation theory of the cam profile in the reverse design cam mechanism are introduced.According to the introduction of cam,the data of discrete points of the actual cam profile line is ...
Zhu Lei   +3 more
doaj  

Trunk Inclination Estimate During the Sprint Start Using an Inertial Measurement Unit: A Validation Study [PDF]

open access: yes, 2013
The proper execution of the sprint start is crucial in determining the performance during a sprint race. In this respect, when moving from the crouch to the upright position, trunk kinematics is a key element.
GUILLON, Pélagie   +5 more
core   +1 more source

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