Results 161 to 170 of about 948,048 (332)

Micro‐Scale Arrays Fabricated on Parafilm and Polymethyl Methacrylate Towards Differential Colorimetric Analysis of Amines via Shape Transformation of Ag Nanoprisms

Analytical Science Advances, Volume 6, Issue 2, December 2025.
ABSTRACT A novel micro‐array was developed to a colorimetric detection of some amines, including histamine (HT), cadaverine (CAD), 1,4‐diaminobutane (putrescine), 2‐phenylethylamine (2‐PEA), spermidine (SD) and ethylenediamine (EA) using silver nanoparticle (silver nanoprisms [AgNPrs]) as optical nanoprobe.
Farnaz Bahavarnia, Mohammad Hasanzadeh, Nasrin Shadjou, Rokhsareh Ebrahimi   +3 more
wiley   +1 more source

The Vertical Metallicity Gradient of the Galactic Disk for Mono-age Stellar Populations in LAMOST

The Astrophysical Journal
The vertical metallicity gradient of the Galactic disk offers valuable insights into the disk’s formation and chemical evolution over time. We utilized the Large Sky Area Multi-Object Fibre Spectroscopic Telescope low-resolution spectral young stellar ...
Gaohuan Long, Haibo Yuan, Shuai Xu, Chun Wang, Ruoyi Zhang, Bowen Huang   +5 more
doaj   +1 more source

Deep MOS Spectroscopy of NGC 1316 Globular Clusters

Galaxies, 2017
The giant elliptical galaxy NGC 1316 is the brightest galaxy in the Fornax cluster, and displays a number of morphological features that might be interpreted as an intermediate age merger remanent (∼3 Gyr).
Leandro A. Sesto, Favio R. Faifer, Juan C. Forte, Analía V. Smith Castelli   +3 more
doaj   +1 more source

Review of Analytical Lithium Detection and Quantification Methods Along the Lithium Value Chain

Applied Research, Volume 4, Issue 6, December 2025.
This article reviews a selection of suitable state‐of‐the‐art analytical methods for different scales of spatial resolution and detection of lithium for a variety of lithium‐bearing materials along the lithium value chain. The various materials differ greatly in terms of their lithium content by more than 5 orders of magnitude and also vary in their ...
Nico Kropp, Ralf Halama, Ralf B. Wehrspohn   +2 more
wiley   +1 more source

Chemical Abundance Gradients in Open Clusters from the Gaia/LAMOST Sample

The Astronomical Journal
Based on a large and homogeneous sample of 299 open clusters (OCs) from Gaia DR3 and large sky area multiobject fiber spectroscopic telescope DR11, we studied the abundance gradients of the α -elements Mg and Si, and the iron-peak elements Fe and Ni to ...
Guochao Yang, Jingkun Zhao, Yong Yang, Nian Liu, Yangping Luo, Gang Zhao   +5 more
doaj   +1 more source

Abundance Distributions in Barred Galaxies [PDF]

International Astronomical Union Colloquium, 1996
AbstractI review the evidence for global abundance gradients in barred galaxies to be flatter when compared with those of normal galaxies. The finding that the abundance gradient becomes flatter as the strength of the bar increases, illustrates the effectiveness of radial flows induced by bars at transporting large amount of gas across galaxy disks.
openaire   +1 more source

Vessel‐on‐a‐Chip to Study Vascular Endothelial Inflammation

Current Protocols, Volume 5, Issue 12, December 2025.
Abstract The complex network of blood vessels plays a key role in transporting oxygen and nutrients and maintaining homeostasis in the human body. The inner walls of all blood and lymphatic vessels are lined by the endothelium, a monolayer of endothelial cells (ECs) oriented along the direction of blood flow.
Svitlana M. Palii, Anastasiia Voytovych, Nadiya Muzyka, Nuria Chantada, Pablo J. Sáez, Ezequiel Álvarez, Oksana Shevchuk   +6 more
wiley   +1 more source

A Perspective on the Milky Way Bulge Bar as Seen from the Neutron-capture Elements Cerium and Neodymium with APOGEE

The Astrophysical Journal
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of ∼2000 stars in the Galactic bulge bar spatially contained within ∣ X _Gal ∣ < 5 kpc, ∣ Y _Gal ∣ < 3.5 ...
J. V. Sales-Silva, K. Cunha, V. V. Smith, S. Daflon, D. Souto, R. Guerço, A. Queiroz, C. Chiappini, C. R. Hayes, T. Masseron, Sten Hasselquist, D. Horta, N. Prantzos, M. Zoccali, C. Allende Prieto, B. Barbuy, R. Beaton, D. Bizyaev, J. G. Fernández-Trincado, P. M. Frinchaboy, J. A. Holtzman, J. A. Johnson, Henrik Jönsson, S. R. Majewski, D. Minniti, D. L. Nidever, R. P. Schiavon, M. Schultheis, J. Sobeck, G. S. Stringfellow, G. Zasowski   +30 more
doaj   +1 more source

A Deep Metagenomic Snapshot as a Proof‐of‐Concept for Resource Generation: Simultaneous Assembly of Host, Food, and Microbiome Genomes From Stingless Bee Larval Food

Ecology and Evolution, Volume 15, Issue 12, December 2025.
This study serves as a proof‐of‐concept, demonstrating that deep shotgun sequencing of a single complex sample—stingless bee larval food—can simultaneously generate multiple genomic resources. From this dataset, we assembled three genomes (a near‐complete bacterium, a draft host mitochondrion, and a fragmented plant chloroplast) with varying ...
Carlos Ueira‐Vieira, Ana Carolina Costa Santos, Thayane Nogueira Araújo, Solange Cristina Augusto, Natanael Borges de Avila, Ana Maria Bonetti, Anderson Rodrigues dos Santos   +6 more
wiley   +1 more source

Chemical Components in the Virgo Overdensity and Hercules–Aquila Cloud: Hints of More than One Merger Event in GSE-like Debris

The Astrophysical Journal
Using elemental abundances for 1.26 million K giants in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR8 value-added catalog, we analyze the chemical abundances of the Virgo Overdensity and Hercules–Aquila Cloud.
Haoyang Liu, Cuihua Du, Thomas Donlon II, Mingji Deng   +3 more
doaj   +1 more source