Results 81 to 90 of about 5,915 (202)

The Chemical Compositions of the Type II Cepheids -- The BL Her and W Vir Variables

open access: yes, 2007
Abundance analyses from high-resolution optical spectra are presented for 19 Type II Cepheids in the Galactic field. The sample includes both short-period (BL Her) and long-period (W Vir) stars.
Berdnikov L. N.   +23 more
core   +1 more source

Recent Advances in Quantum Dots‐Based Sensors for the Detection of Tuberculosis: A Review

open access: yesChemistrySelect, Volume 11, Issue 6, 12 February 2026.
Quantum dot‐based biosensors enable rapid, sensitive detection of tuberculosis by converting biomolecular interactions into fluorescent signals. Target‐specific probes recognize TB biomarkers, producing measurable optical responses. This platform offers high sensitivity, multiplexing capability, and portability, supporting early diagnosis and improved ...
Alungile Mtotywa   +5 more
wiley   +1 more source

Stellar Pulsation and Evolution: A Combined Theoretical Renewal and Updated Models (SPECTRUM). I. Updating Radiative Opacities for Pulsation Models of Classical Cepheid and RR-Lyrae

open access: yesThe Astrophysical Journal
Pulsating stars are universally recognized as precise distance indicators and tracers of stellar populations. Their variability, combined with well-defined relationships between pulsation properties and intrinsic evolutionary parameters such as ...
Giulia De Somma   +3 more
doaj   +1 more source

UBVRIJKL light curves of classical Cepheids [PDF]

open access: yes
Photoelectric observations and light curves of UBVRIJKL system for classical Cepheid variable stars - tables and ...
Johnson, H. L., Wisniewski, W. Z.
core   +1 more source

The dynamical mass and evolutionary status of the type-II Cepheid in the eclipsing binary system OGLE-LMC-T2CEP-211 with a double-ring disk

open access: yes, 2018
We present the analysis of a peculiar W~Virginis (pWVir) type-II Cepheid, OGLE-LMC-T2CEP-211 ($P_{puls}=9.393\,d$), in a double-lined binary system ($P_{orb}=242\,d$), which shed light on virtually unknown evolutionary status and structure of pWVir stars.
Dervişoğlu, Ahmet   +7 more
core   +1 more source

Newly Identified Transcriptomic Biomarkers and Gene Signature of Pathological Complete Response to Induction Chemoimmunotherapy in Locally Advanced Head and Neck Squamous Cell Carcinoma

open access: yesMedComm, Volume 7, Issue 1, January 2026.
Scheme and pathological characteristics of the CheckRad‐CD8 trial cohort used for the transcriptome analyses. (A) Flow diagram depicting the patient cohort and study scheme as the basis for whole transcriptome profiling of samples from locally advanced HNSCC patients treated with induction chemoimmunotherapy (iCIT).
Jian‐Guo Zhou   +20 more
wiley   +1 more source

Variable Stars in M31 Stellar Clusters from the Panchromatic Hubble Andromeda Treasury

open access: yesThe Astrophysical Journal
Variable stars in stellar clusters can offer key constraints on stellar evolution and pulsation models, utilizing estimates of host cluster properties to constrain stellar physical parameters.
Richard Smith   +11 more
doaj   +1 more source

Young and Intermediate-age Distance Indicators

open access: yes, 2017
Distance measurements beyond geometrical and semi-geometrical methods, rely mainly on standard candles. As the name suggests, these objects have known luminosities by virtue of their intrinsic proprieties and play a major role in our understanding of ...
A. Bhardwaj   +212 more
core   +1 more source

Navigating the Gap: An Examination of Funder Rhetoric and Reality Regarding Community‐Research Partnerships

open access: yesDrug and Alcohol Review, Volume 45, Issue 1, January 2026.
ABSTRACT Partnerships between researchers and consumers—specifically, people who use drugs in the context of our research co‐production—can significantly enhance the relevance and impact of research. Funders increasingly emphasise the value of community‐researcher collaborations, yet translating this commitment into effective practice remains ...
Danielle M. Russell   +10 more
wiley   +1 more source

Convection in the interior of Cepheid variable stars

open access: yes
Visualization of vorticity magnitude of a 8 solar mass Cepheid variable star. This 2D simulation in a spherical shell has been performed with the MUltidimensional Stellar Implicit Code (MUSIC). The zero point in vorticity is in white.This poster won a Gallery of Fluid motion award at the APS/DFD 2025 conference.This work was performed under the ...
Stuck, Maxime, Pratt, Jane
openaire   +1 more source

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