Results 61 to 70 of about 1,619,251 (342)

Análisis de los materiales tipo de Pleurosigma formosum y P. decorum (Pleurosigmataceae, Bacillariophyta) [PDF]

open access: yes, 2014
Los materiales tipo de Pleurosigma formosum W. Smith y P. decorum W. Smith fueron examinados. Ambas especies fueron separadas hasta ahora por el rango de tamaño, la forma de la valva y la densidad de las estrías sobre la base de su análisis con ...
Sar, Eugenia Alicia   +2 more
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Micromechanical Fracture Model of High-Strength Welded Steel Under Cyclic Loading

open access: yesBuildings
To investigate the micromechanical fracture behavior of high-strength steel, an integrated experimental and numerical study was conducted on Q460C steel and its welded joints, with specimens extracted from the base metal, weld metal, and the heat ...
Xiyue Liu   +5 more
doaj   +1 more source

Effects of Local Denting and Fracture Damage on the Residual Longitudinal Strength of Box Girders

open access: yesJournal of Marine Science and Engineering, 2023
The residual strength of denting- and fracture-damaged box girders were experimentally and numerically investigated. The experiments were conducted under a pure bending moment using the four-point bending test method.
Sang-Hyun Park   +4 more
doaj   +1 more source

Revealing Relationships among Relevant Climate Variables with Information Theory [PDF]

open access: yes, 2013
A primary objective of the NASA Earth-Sun Exploration Technology Office is to understand the observed Earth climate variability, thus enabling the determination and prediction of the climate's response to both natural and human-induced forcing.
Curry, Charles T.   +5 more
core  

Lenalidomide reduces microglial activation and behavioral deficits in a transgenic model of Parkinson's disease. [PDF]

open access: yes, 2015
BackgroundParkinson's disease (PD) is one of the most common causes of dementia and motor deficits in the elderly. PD is characterized by the abnormal accumulation of the synaptic protein alpha-synuclein (α-syn) and degeneration of dopaminergic neurons ...
Anderson, Scott   +4 more
core   +2 more sources

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Gravity Load Collapse Behavior of Nonengineered Reinforced Concrete Columns

open access: yesAdvances in Civil Engineering, 2018
This paper aims at investigating gravity load collapse behavior of extremely poor quality reinforced concrete columns under cyclic loading. Such columns were usually constructed by local people and may not be designed to meet any of the standards. It was
Chichaya Boonmee   +2 more
doaj   +1 more source

Manufacturing structural building components from round timber with heartwood rot

open access: yesИнженерно-строительный журнал, 2019
Coniferous sawn goods are widely used in construction industry. The quality of round timber deteriorates due to the presence of heartwood rot, which has to be removed in the manufacture of load-bearing structural units.
Aleksandr Toropov   +2 more
doaj   +1 more source

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