Results 91 to 100 of about 554,532 (299)

Rapid time variations of water maser emission in W3(OH) and NGC 6334C

open access: yes, 2000
We report the observed results of a short time scale monitoring of the 22 GHz water maser emission in W3(OH) and NGC 6334C. Both sources were monitored daily for about a month.
Zheng, XW   +6 more
core  

Assessing Rapid Variability in Atmospheric Apparent Optical Depth with an Array Spectrometer System

open access: yesRemote Sensing, 2020
A method for determining rapid variations in atmospheric optical depth is proposed. The method is based upon computation of the ratio between close-time spectral measurements of solar direct flux. Use of the ratio avoids the need for absolute calibration
Josep-Abel González, Josep Calbó
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

An Appointed-Time Control Method for Morphing Aircraft with Fragility-Avoidance Prescribed Performance

open access: yesAerospace
This paper introduces an adaptive prescribed performance control (PPC) methodology designed to achieve appointed-time stabilization for morphing aircraft.
Yuhao Zhang   +3 more
doaj   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

Spatial and Temporal Variations of Embodied Carbon Emissions in China’s Infrastructure [PDF]

open access: yes, 2019
The swift evolution of urbanization in China has led to a rapid increase in the demand for infrastructure. Infrastructure consumes significant amounts of construction materials. The production, packaging, transportation and use of these materials require
Jiansheng Qu(曲建升)   +17 more
core   +1 more source

X-Ray Spectral and Temporal Properties of LMXB 4U 1608-52—Observed with AstroSat and NICER

open access: yesThe Astrophysical Journal
We report results from a detailed study of the neutron star X-ray binary, 4U 1608-52, using observations with AstroSat (Large Area X-ray Proportional Counter/Soft X-ray Telescope) and the Neutron Star Interior Composition Explorer during its 2016 and ...
Sree Bhattacherjee   +6 more
doaj   +1 more source

Attempts to Determine the Velocity Variations in Ocean Geostrothrophic Currents Based on GRACE Solutions

open access: yesRemote Sensing
The paper shows the idea of using GRACE solutions to determine the velocity of the Atlantic geostrophic currents at a depth of 2000 m, where the assumptions of geostrophic motion are met. The relationship between the water velocity variations and the OBP,
Zofia Rzepecka, Monika Birylo
doaj   +1 more source

Advanced pH neutralization control using model reference adaptive control (MRAC) with MIT rule [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly
This study presents the design and implementation of a Model Reference Adaptive Controller (MRAC) using the Massachusetts Institute of Technology (MIT) rule for a pH neutralization process in a continuous reactor.
Hitit Zeynep Yilmazer
doaj   +1 more source

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

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