Results 121 to 130 of about 60,044 (291)

Stable Isotopic Evidence of Paleorecharge in the Northern Gulf Coastal Plain (USA)

Hydrology
Stable isotope abundances (δ18O and δ2H) in regional aquifers can provide important paleoclimate information. However, identifying paleoclimate signals can be complicated by cross-formational mixing and, potentially, by isotopic diffusion between ...
Estifanos Haile, Benjamin J. Currens, Alan E. Fryar   +2 more
doaj   +1 more source

Integrating Spatial Proteogenomics in Cancer Research

Advanced Science, EarlyView.
Xx xx. ABSTRACT Background: Spatial proteogenomics marks a paradigm shift in oncology by integrating molecular analysis with spatial information from both spatial proteomics and other data modalities (e.g., spatial transcriptomics), thereby unveiling tumor heterogeneity and dynamic changes in the microenvironment.
Yida Wang, Yang Wu, Feng Zhang, Parthiban Periasamy, Haiyue You, Denise Goh, Rachel Elizabeth Ann Fincham, Xin Ning, Danping Wu, Lu Liu, Ying Jiang, Zhiwen Qian, Joe Yeong, Yan Zhang   +13 more
wiley   +1 more source

H O in the Terrestrial Planet-forming Regions of Protoplanetary Disks

The Astrophysical Journal
Isotopologues play an important role in solar system cosmochemistry studies, revealing details of early planet formation physics and chemistry. Oxygen isotopes, as measured in solar system materials, reveal evidence for both mass-dependent fractionation ...
Colette Salyk, Klaus M. Pontoppidan, Ke Zhang, Sophie Heinzen, Jenny K. Calahan, Andrea Banzatti, D. Annie Dickson-Vandervelde, Edwin A. Bergin, Geoffrey A. Blake, Nicole Arulanantham, Sebastiaan Krijt, John Carr, Joan Najita, Joel Green, Carlos Romero-Mirza   +14 more
doaj   +1 more source

A lambda=3 mm molecular line survey of NGC1068. Chemical signatures of an AGN environment

, 2012
We aimed to study the molecular composition of the interstellar medium (ISM) surrounding an Active Galactic Nucleus (AGN), by making an inventory of molecular species and their abundances, as well as to establish a chemical differentiation between ...
Aladro, Rebeca, Bayet, Estelle, Kramer, Carsten, Martin, Sergio, Martin-Pintado, Jesus, Mauersberger, Rainer, Riquelme, Denise, Torres, Miguel Angel Requena, Viti, Serena, Weiss, Axel   +9 more
core   +1 more source

Oil‐Coated Nanoplastics Induce Rapid Membrane Disruption and Severe Intestinal Injury

Advanced Science, EarlyView.
Oil‐rich food contact dramatically amplifies MNP release from plastic takeout containers, producing oil‐coated nanoplastics with altered surface properties and rapid membrane‐disruptive effects. These particles cause severe intestinal barrier damage and immune dysfunction in mice, and risk modeling suggests that long‐term gastrointestinal burdens may ...
Ruwen Xie, Gulimire Yilihan, Qiong Chen, Dachuan Lin, Zhen Liu, Mengyi Yuan, Yujia Wang, Haoteng Xu, Weishang Zhou, Wanxin Gong, Yueer Li, Chen Peng, Tong Yang, Peng Gao, Qing Liu, Xin‐Hua Feng, Mu Xiao, Chao Jiang   +17 more
wiley   +1 more source

Thermal Processing History of the Solar System’s First Solids Inferred from Isotope Fractionation of Refractory Elements

The Astrophysical Journal
We present analyses of mass-dependent isotope fractionation of strontium (Sr) and neodymium (Nd) from a number of petrologically and chemically diverse calcium–aluminium-rich inclusions (CAIs) from the CV chondrite Allende. Combined with literature data,
Yankun Di, François L. H. Tissot, Qing-Zhu Yin, Christopher Mornement, Trevor R. Ireland, Yuri Amelin   +5 more
doaj   +1 more source

Liquid Bismuth Catalyst Enables High‐CO‐Selectivity in CO2 Hydrogenation

Advanced Science, EarlyView.
This work introduces a dynamic liquid bismuth catalyst for efficient CO2‐to‐syngas conversion. Stabilized molten Bi nanodroplets on a defective VOx support enable a reversible Bi3+/Bi0 redox cycle at moderate temperatures. Mechanistic insights reveal that Ni‐Bi dual sites synergistically activate H2 and cleave CO2, leading to high CO selectivity ...
Xinxin Lu, Zun Guan, Xinyi Fu, Bin Chen, Zhongliang Huang, Riguang Zhang, Guowu Zhan   +6 more
wiley   +1 more source

HDO Ice Detected toward an Isolated Low-mass Protostar with JWST

The Astrophysical Journal Letters
Water is detected in environments representing every stage of star and solar system formation, but its chemical evolution throughout these stages remains poorly constrained.
Katerina Slavicinska, Łukasz Tychoniec, María Gabriela Navarro, Ewine F. van Dishoeck, John J. Tobin, Martijn L. van Gelder, Yuan Chen, A. C. Adwin Boogert, W. Blake Drechsler, Henrik Beuther, Alessio Caratti o Garatti, S. Thomas Megeath, Pamela Klaassen, Leslie W. Looney, Patrick J. Kavanagh, Nashanty G. C. Brunken, Patrick Sheehan, William J. Fischer   +17 more
doaj   +1 more source

Beyond Extracellular Vesicle (EV) Hype: Practical Solutions and Remaining Hurdles in EV Research, Manufacturing, and Clinical Translation

Advanced Science, EarlyView.
ABSTRACT Extracellular vesicles (EVs) are nanoscale mediators of intercellular communication with diverse molecular cargoes that reflect their cell of origin. Advances in isolation, detection, and single‐particle analytics have revealed increasing molecular and functional heterogeneity, while exposing limitations in how EV identity and activity are ...
David J. Lundy, Zoe L. Chau, Sheng‐You Chen, Nanami Fujisawa, John J. Hill, Barnett M. Hsu, Joanne K. Liu, Karol W. Mai, James J. Lai   +8 more
wiley   +1 more source

The CAI Database: 26Al–26Mg Isotope Systematics

The Astrophysical Journal Supplement Series
We present a publicly available calcium–aluminum-rich inclusion (CAI) database that focuses on the initial ^26 Al/ ^27 Al _0 ratio in CAIs, designed in a way that researchers in cosmochemistry and astrophysics may find useful.
Emilie T. Dunham, Ming-Chang Liu, Aman Burman, Fatima Jorge-Chavez, Danielle Leuer, Ashley K. Herbst, François L. H. Tissot, Kevin D. McKeegan   +7 more
doaj   +1 more source