Results 161 to 170 of about 5,633,642 (286)

Rising from the Ashes: A Metallicity-dependent Star Formation Gap Splits the Milky Way’s α Sequences

The Astrophysical Journal
The elemental abundance distribution of stars encodes the history of the gas-phase abundance in the Milky Way. Without a large, unbiased sample of highly precise stellar ages, the exact timing and nature of this history must be inferred from the ...
Angus Beane
doaj   +1 more source

The rise of the Milky Way Disk through EMP stars

Publications of the Astronomical Society of Australia
Abstract We present a chemo-dynamical study conducted with 2dF $+$ AAOmega of $\sim 6\,000$ Gaia DR3 non-variable candidate metal-poor stars that lie in the direction of the Galactic plane. Our spectral analysis reveals 15 new extremely metal-poor (EMP) stars, with the lowest metallicity at
Benjamin David Caleb Lowe, Thomas Nordlander, Luca Casagrande, Gary S. Da Costa, Michael Bessell, Madeleine McKenzie, Giacomo Cordoni, Norbert Christlieb, Sven Buder   +8 more
openaire   +3 more sources

Exosomal hnRNPA1‐delivered miR‐27a‐3p inhibits the radiation‐induced bystander effect in cervical cancer

Precision Radiation Oncology, EarlyView.
The study showed that TOMO‐mediated RIBE is activated by decreasing exosomal hnRNPA1 protein level and its capability to packaging miR‐27a‐3p. These new findings infer that hnRNPA1 is a novel inhibitor of RIBE, which potentiates to be a new therapeutic target for improving the efficacy of radiotherapy.
Meng‐Qi Yang, Ping Huang, Yun‐Rui Song, Yong‐Zhong Wu, Zheng Tang, Lu Zhang, Huan‐Li Luo, Yun‐Chang Liu, Dan Li, Fu Jin, Jiang‐Dong Sui, Ying Wang   +11 more
wiley   +1 more source

"Fermi" bubbles are bursting from our galaxy. Their origins remain a mystery. [PDF]

Proc Natl Acad Sci U S A, 2023
Mann A.
europepmc   +1 more source

Ruta graveolens L. in Evidence‐Based Phytotherapy: Pharmacological Activities, Bioactive Compounds and Safety

Phytotherapy Research, EarlyView.
Graphical representation of ethnomedical uses, major bioactive compounds, pharmacological potential and toxicological risks of Ruta graveolens L. ABSTRACT Ruta graveolens L. is widely used in traditional European, Asian, African, and South American medicine for digestive, nervous, cardiovascular, respiratory, and reproductive disorders.
Tetiana Serhiienko, Victoriya Georgiyants, Liudas Ivanauskas, Olha Mykhailenko   +3 more
wiley   +1 more source

The Milky Way Is a Less Massive Galaxy—New Estimates of the Milky Way’s Local and Global Stellar Masses

The Astrophysical Journal Letters
Stellar mass is the most fundamental property of a galaxy. While it has been robustly measured for millions of external galaxies, it remains poorly constrained for the Milky Way because of the strong selection effect from our inside perspective.
Jianhui Lian, Tao Wang, Qikang Feng, Yang Huang, Helong Guo   +4 more
doaj   +1 more source

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +1 more source

Ultra‐Tough Hybrid Supramolecular Gelatin Hydrogels

Small, EarlyView.
Tannic acid‐mediated coacervation compacts gelatin into a dense supramolecular network while generating an acidic microenvironment that activates pre‐embedded bis‐oxazoline crosslinkers. The resulting hybrid hydrogel combines covalent stabilization with reversible energy dissipation, producing high strength, extreme extensibility, substantial toughness,
Patrick Shakari, Christos Leliopoulos, Hamidreza Mokhtari, Rohith Pavan Parvathaneni, Afroditi Kontse, Jöns Hilborn, Oommen P. Varghese   +6 more
wiley   +1 more source

Strategies for enhancing sensitivity in lateral flow assays

VIEW, EarlyView.
Lateral flow assays (LFAs) are essential for cost‐effective, rapid point‐of‐care diagnostics. However, conventional colourimetric LFAs often lack the sensitivity required for low‐abundance biomarkers. This review evaluates six enhancement strategies: flow modulation, sample preconcentration, advanced reporters, chemical signal amplification, structural
Aylar Eslami Saed, Jacopo Giaretta, Syamak Farajikhah, Fariba Dehghani   +3 more
wiley   +1 more source

Milky Way disk formation

, 2007
This thesis work has focused on the Galactic disk kinematics to put some constraints on the scenarios of the thin and thick disk formation. It takes part of the RAVE project which has the goal to spectrocpically measure the radial velocities and the stellar parameters of one million stars in the South celestial hemisphere.
openaire   +1 more source