Results 81 to 90 of about 5,545 (213)

Microbially induced sedimentary structures in fluvial settings: the gas domes from the Bolzano Megacaldera (Permian, Italy)

Sedimentology, Volume 73, Issue 4, Page 914-944, June 2026.
ABSTRACT Gas domes serve as some of the earliest and most persisting indicators of life on Earth, yet their documentation in continental environments remains sparse. This study aims to bridge this gap by examining gas domes within the Permian fluvial succession of Monte Luco, located in the caldera of the Bolzano Supervolcano. These structures occur as
Andrea Baucon, Steffen Trümper, Corrado Morelli, Carlos Neto de Carvalho, Roberto Cabella, Evelyn Kustatscher   +5 more
wiley   +1 more source

Modern microbial landscape: Aerial mapping of microbially induced sedimentary structures forming in a coastal sabkha

Sedimentology, Volume 73, Issue 4, Page 1286-1306, June 2026.
ABSTRACT Microbially induced sedimentary structures (MISS) are considered important for understanding primitive life on Earth and for guiding the search for life on other planets. These structures are regarded as macroscopic fossils of early communities of unicellular organisms that did not produce skeletons or shells. In this study, field observations
Tomaso R. R. Bontognali, Axel Bouquety, Ottaviano Rüsch, Brigitte Kuhn, Zulfa Al Disi, Fadhil Sadooni, Nikolaus Kuhn, Jean‐Luc Josset, Hamad Al‐Saad Al‐Kuwari   +8 more
wiley   +1 more source

Habitability and Atmospheric Biosignatures in an Exoplanetary Context

, 2023
The extent of habitable conditions beyond the Solar System and the potential range of atmospheric biosignatures are central issues in exoplanetary science.
Grenfell, John Lee
core   +1 more source

Synaptic biomarkers in Alzheimer's disease dementia and mild cognitive impairment: A systematic review and meta‐analysis

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Alzheimer's disease (AD) is characterized by synaptopathy, a neuropathological feature that can contribute to underlying cognitive decline. Here, we evaluate potential cerebrospinal fluid (CSF) and blood‐based synaptic biomarkers in AD dementia and its earliest clinical stage, mild cognitive impairment (MCI). METHODS Articles that
Amish Gaur, Melissa Wong, Jinghan Jenny Chen, Yejin Kang, Danielle Tahoulas, Komalpreet Jeor, Keeirah H. Raguram, Damien Gallagher, Mark Rapoport, Nathan Herrmann, Krista L. Lanctôt   +10 more
wiley   +1 more source

Distinguishing Potential Organic Biosignatures on Ocean Worlds from Abiotic Geochemical Products using Thermodynamic Calculations

The search for life in our solar system often involves efforts to detect organic molecules, which have been found on many extraterrestrial bodies, including planets, moons, meteorites, comets, and asteroids.
Jordyn, Robare, Everett, Shock
core   +1 more source

Association of RNA Biosignatures With Bacterial Infections in Febrile Infants Aged 60 Days or Younger [PDF]

, 2016
ImportanceYoung febrile infants are at substantial risk of serious bacterial infections; however, the current culture-based diagnosis has limitations.
Ruddy, Richard M, Suarez, Nicolas, Bennett, Jonathan E, Blumberg, Stephen, Rogers, Alexander J, Alpern, Elizabeth R, Linakis, James G, Chaussabel, Damien, Borgialli, Dominic, Levine, Deborah A, Browne, Lorin, Smith, Bennett, Dean, J Michael, Tzimenatos, Leah, Powell, Elizabeth C, Crain, Ellen F, Saunders, Mary, Kuppermann, Nathan, Casper, T Charles, Dayan, Peter S, Anders, Jennifer, Bonsu, Bema, Cruz, Andrea T, Brayer, Anne, Tunik, Michael G, Vitale, Melissa, Mahajan, Prashant, Gattu, Rajender, Hoyle, John D, Atabaki, Shireen M, Mejias, Asuncion, Roosevelt, Genie, Jaffe, David M, Muenzer, Jared, Cohen, Daniel M, Greenberg, Richard, Ramilo, Octavio, Lillis, Kathleen, Nigrovic, Lise E   +38 more
core   +1 more source

The ORIGIN Space Instrument for Detecting Biosignatures and Habitability Indicators on a Venus Life Finder Mission

, 2022
Recent and past observations of chemical and physical peculiarities in the atmosphere of Venus have renewed speculations about the existence of life in its clouds.
Tulej, Marek, Niels F. W. Ligterink, Nikita J. Boeren, Wurz, Peter, Andreas Riedo, Kristina A. Kipfer, Salome Gruchola, Gruchola, Salome, Peter Keresztes Schmidt, de Koning, Coenraad P, Keresztes Schmidt, Peter, Marek Tulej, Coenraad P. de Koning, Boeren, Nikita J, Riedo, Andreas, Ligterink, Niels F W, Kipfer, Kristina A, Peter Wurz   +17 more
core   +1 more source

High‐Resolution Diffusion‐Weighted Imaging With Self‐Gated Self‐Supervised Unrolled Reconstruction

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2852-2862, May 2026.
ABSTRACT Purpose High‐resolution diffusion‐weighted imaging (DWI) is clinically demanding. The purpose of this work is to develop an efficient self‐supervised algorithm unrolling technique for submillimeter‐resolution DWI. Methods We developed submillimeter DWI acquisition utilizing multi‐band multi‐shot EPI with diffusion shift encoding.
Zhengguo Tan, Patrick A. Liebig, Annika Hofmann, Frederik B. Laun, Florian Knoll   +4 more
wiley   +1 more source

Life on Mars? The physiological perspective

Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

Constraining the Hydration of Clay Minerals and Abundances of Amorphous Phases in Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Both water and organic matter are required for the development and persistence of life. Phyllosilicates (clay minerals) have high surface areas that easily sorb water and organic matter. The Curiosity rover has investigated several hundred meters of stratigraphy in Gale crater, including where clays were detected from orbit.
Sean Czarnecki, Craig Hardgrove, Liz Rampe, Patrick Gasda   +3 more
wiley   +1 more source