Results 61 to 70 of about 1,952,937 (282)

HD152786: A LITHIUM GIANT?

open access: yesOdessa Astronomical Publications, 2007
We were presented poster about interpretation of spectrum of the late-type lithium star HD152786 acquired within UVES Paranal Observatory Project. Using the Synspec code for synthetic spectrum calculations we obtained some physical characteristics of the
T. Kratka, V. Stefl
doaj   +1 more source

Epigenetic heterogeneity and plasticity in therapy‐induced tumor states through single‐cell multi‐omics

open access: yesMolecular Oncology, EarlyView.
Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim   +3 more
wiley   +1 more source

The VHL tumor suppressor at the crossroad of protein folding, aggregation, and cancer

open access: yesMolecular Oncology, EarlyView.
Mutations, environmental stress, and chaperone dysfunction can destabilize pVHL, promoting its conversion from the native folded state into amyloid‐like assemblies. This transition may contribute to protein storage, cell dormancy, survival, and drug resistance.
Lara Abad   +2 more
wiley   +1 more source

INSTANTANEOUS FREQUENCY ESTIMATION FOR MULTI- COMPONENT SIGNALS USING A LEAST SQUARES EVOLUTIONARY SPECTRUM

open access: yesElectrica, 2006
We present a method for estimating the instantaneous frequency of the multi-component signals. This method involves the calculation of a time-frequency energy density of the signal, then obtaining an instantaneous frequency estimation from this joint ...
Mahmut ÖZTÜRK, Aydın AKAN
doaj   +2 more sources

Spectrum, May 1979 [PDF]

open access: yes, 1979
Vol.
Spectrum Contributors,
core   +1 more source

SNPs or RNA modifications? Concerns on mutation-based evolutionary studies of SARS-CoV-2.

open access: yesPLoS ONE, 2020
SARS-CoV-2 is still rampaging throughout the world while the many evolutionary studies on it are simultaneously springing up. Researchers have simply utilized the public RNA-seq data to find out the so-called SNPs in the virus genome.
Yue Li   +6 more
doaj   +1 more source

Extracellular matrix remodeling and immune reprogramming drive residual tumor progression of liver cancer after incomplete microwave ablation

open access: yesMolecular Oncology, EarlyView.
Incomplete microwave ablation (iMWA) of liver cancer triggers a biphasic progression in residual tumors. At Day 3, the microenvironment is characterized by acute inflammatory responses and extracellular matrix (ECM) remodeling. By Day 14, a profound shift occurs toward oncogenic signal transduction and immunosuppression, marked by macrophage ...
Yu Liu   +9 more
wiley   +1 more source

Spectrum, April 1984 [PDF]

open access: yes, 1984
Volume 6, Number 1 of Spectrum literary journalhttps://nwcommons.nwciowa.edu/spectrum/1010/thumbnail ...
Spectrum Contributors,
core   +1 more source

The road not taken: Could stress-specific mutations lead to different evolutionary paths?

open access: yesPLoS Biology, 2017
Organisms often encounter stressful conditions, some of which damage their DNA. In response, some organisms show a high expression of error-prone DNA repair machinery, causing a temporary increase in the genome-wide mutation rate.
Deepa Agashe
doaj   +1 more source

Game Theoretic Approaches for Cooperative Spectrum Sensing in Energy-Harvesting Cognitive Radio Networks

open access: yesIEEE Access, 2018
In this paper, we propose game-theoretic approaches to model the cooperative spectrum sensing in cognitive radio environment with cognitive secondary users (SU) capable of energy harvesting. An evolutionary game model is considered in the first scenario,
Osama Elnahas   +3 more
doaj   +1 more source

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