Results 51 to 60 of about 1,640,082 (275)

Comparing the paths of Hedgehog release in artificial and natural settings

open access: yesFEBS Letters, EarlyView.
Hh morphogens require solubilization factors to overcome their tight association with the plasma membrane and signal to distant cells, but the precise functions of these factors are controversial. Here, we use published in vivo observations as the most relevant evidence to test their suggested functions and discuss contradictions and gaps between in ...
Janna Puschmann, Kay Grobe
wiley   +1 more source

A HRWS SAR Motion Compensation Method with Multichannel Phase Correction

open access: yesRemote Sensing
The multichannel synthetic aperture radar (SAR) possesses the capability to acquire high-resolution, wide-swath SAR imagery, which has great potential for application.
Liming Zhou   +6 more
doaj   +1 more source

Vertical Machining Center Feed Axis Thermal Error Compensation Strategy Research

open access: yesApplied Sciences, 2023
CNC machine tools are a measure of national manufacturing and comprehensive national strength and how to reduce CNC machine errors in modern industry has received much attention from all walks of life.
Bo Huang   +5 more
doaj   +1 more source

Analysis Methods of Errors (Motion and Atmospheric) in Synthetic Aperture Radar (SAR) Images [PDF]

open access: yes, 2005
A method to allow the analysis of the effects of motion and atmospheric errors in SAR images is here presented. The objective of the method is to allow the visualization of the effects of motion errors and atmospheric artefacts on the processed (focused)
K. A. Camara de Macedo   +9 more
core   +1 more source

KDM7A and KDM1A inhibition suppresses tumour promoting pathways in prostate cancer

open access: yesMolecular Oncology, EarlyView.
Treatment resistance is a major challenge for patients with advanced prostate cancer. This study examined an alternative approach to target the major prostate cancer‐promoting pathway by targeting epigenetic factors, whose levels are higher in tumours.
Jennie N Jeyapalan   +16 more
wiley   +1 more source

Joint Motion Estimation and Layer Segmentation in Transparent Image Sequences—Application to Noise Reduction in X-Ray Image Sequences

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
This paper is concerned with the estimation of the motions and the segmentation of the spatial supports of the different layers involved in transparent X-ray image sequences.
Jean Liénard   +2 more
doaj   +1 more source

High-precision Motion Compensation Method Based on the Subaperture Envelope Error Correction for SAR

open access: yesLeida xuebao, 2015
Small size, light weight, and low power are presently the directions in SAR development. The microSAR platform is small and light, which results in track deviations because of air flow.
Tian Xue   +3 more
doaj   +1 more source

3D imaging of moving targets for ultra‐wideband MIMO through‐wall radar system

open access: yesIET Radar, Sonar & Navigation, 2021
Ultra‐wideband (UWB) radar is widely used in static through‐wall imaging (TWI). There are still many imaging problems of motion through‐wall targets for complex system structure and unknown wall environment.
Jun Pan   +7 more
doaj   +1 more source

Castration‐resistant prostate cancer cells are addicted to the high activity of cyclin‐dependent kinase 2

open access: yesMolecular Oncology, EarlyView.
We show that emergence of castration‐resistant prostate (CRPC) is associated with significant upregulation of cyclins that positively regulate cyclin‐dependent kinase 2 (CDK2) and concomitant downregulation of CDK4 cyclins. This renders CRPC cells dependent on the high activity of CDK2, and CDK2 inhibitors synergistically sensitize CRPC cells to both ...
Joyeeta Chatterjee   +3 more
wiley   +1 more source

Cascade Control of Active Heave Compensation Nonlinear System for Marine Crane

open access: yesJournal of Marine Science and Engineering, 2023
During the rough marine environment, heave compensation is used to offset the heave motion of the vessel when a marine crane lifts and lands the load. Thus, load motion and vessel motion are realized decoupled. In previous studies, the interference items
Jianan Xu   +3 more
doaj   +1 more source

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