Results 91 to 100 of about 8,849 (202)

The Chemical Composition of {\tau} Ceti and Possible Effects on Terrestrial Planets

, 2015
{\tau} Ceti (HD10700), a G8 dwarf with solar mass of 0.78, is a close (3.65 pc) sun-like star where 5 possibly terrestrial planet candidates (minimum masses of 2, 3.1, 3.5, 4.3, and 6.7 Earth masses) have recently been discovered. We report abundances of
Pagano, Michael, Shim, Sang-Heon, Truitt, Amanda, Young, Patrick A.   +3 more
core   +1 more source

Evidence of blood–brain barrier dysfunction and CSF immunoglobulin synthesis in Down Syndrome Regression Disorder

Annals of Clinical and Translational Neurology, Volume 12, Issue 4, Page 805-820, April 2025.
Abstract Objectives This study sought to evaluate proteomic, metabolomic, and immune signatures in the cerebrospinal fluid of individuals with Down Syndrome Regression Disorder (DSRD). Methods A prospective case–control study comparing proteomic, metabolomic, and immune profiles in individuals with DSRD was performed.
Jonathan D. Santoro, Neetha Paul Eduthan, Mellad M. Khoshnood, Saba Jafarpour, Natalie K. Boyd, Benjamin N. Vogel, Lina Nguyen, Lilia Kazerooni, Eleanor Britton, Hannah R. Lyford, Matthew D. Galbraith, Angela L. Rachubinski, Joaquin M. Espinosa   +12 more
wiley   +1 more source

Biosignature Gases in H2-Dominated Atmospheres on Rocky Exoplanets [PDF]

, 2013
(Abridged) Super Earth exoplanets are being discovered with increasing frequency and some will be able to retain stable H2-dominated atmospheres. We study biosignature gases on exoplanets with thin H2 atmospheres and habitable surface temperatures, by using a model atmosphere with photochemistry, and biomass estimate framework for evaluating the ...
arxiv   +1 more source

Detectability of biosignatures in anoxic atmospheres with the James Webb Space Telescope: A TRAPPIST-1e case study [PDF]

Published in The Astronomical Journal, Volume 156, Number 3 (2018), 2018
The James Webb Space Telescope (JWST) may be capable of finding biogenic gases in the atmospheres of habitable exoplanets around low mass stars. Considerable attention has been given to the detectability of biogenic oxygen, which could be found using an ozone proxy, but ozone detection with JWST will be extremely challenging, even for the most ...
arxiv   +1 more source

Assessing the utility of trace and rare earth elements as biosignatures in microbial iron oxyhydroxides

Frontiers in Earth Science, 2015
Microbial iron oxyhydroxides are common deposits in natural waters, recent sediments and mine drainage systems and often contain significant accumulations of trace and rare earth elements (TREE). TREE patterns are widely used to characterize minerals and
Christine eHeim, Klaus eSimon, Danny eIonescu, Andreas eReimer, Dirk eDe Beer, Nadia-Valérie eQuéric, Joachim eReitner, Volker eThiel   +7 more
doaj   +1 more source

Astrobiology in Space: A Comprehensive Look at the Solar System

Life, 2023
The field of astrobiology aims to understand the origin of life on Earth and searches for evidence of life beyond our planet. Although there is agreement on some of the requirements for life on Earth, the exact process by which life emerged from ...
Maarten L. De Mol
doaj   +1 more source

Achieving Optimal Health With Host‐Directed Therapies (HDTs) in Infectious Diseases—A New Horizon

Advanced Therapeutics, Volume 8, Issue 4, April 2025.
Host‐directed therapies (HDTs) represent a transformative approach in infectious disease management by targeting host factors to enhance immune responses and inhibit viral replication. This innovative strategy leverages advanced genomics and gene editing technologies, offering promising avenues for improved patient outcomes and a new horizon in ...
Amol D. Gholap, Pankaj R. Khuspe, Sagar R. Pardeshi, Md Jasim Uddin, Ushasi Das, Navnath T. Hatvate, Satish Rojekar, Prabhanjan Giram, Mohammad Khalid, Yahya E. Choonara, Md. Faiyazuddin   +10 more
wiley   +1 more source

Biosignatures and tracers of life

, 2023
Biosignatures are widely sought after within the solar system and exoplanet communities. But what are we talking about, when we talk about biosignatures? The concept of a “biosignature” is widely used to suggest a link between an observation and a biological cause, depending on the context.
ten Kate, Inge Loes, Malaterre, Christophe, Baqué, Mickael, Debaille, Vinciane, Greenfell, John Lee, Javaux, Emmanuelle, Khawaja, Nozair, Klenner, Fabian, Lara, Yannick, McMahon, Sean, Moore, Keavin, Noack, Lena, Patty, Lucas, Postberg, Frank   +13 more
openaire   +1 more source

Geomorphic consequences of freshwater discharge and microbial mats in a macrotidal environment: The case of the beach of Dannes (northern France)

Earth Surface Processes and Landforms, Volume 50, Issue 5, April 2025.
This transdisciplinary study analyses the geomorphic consequences of microbial mats associated with freshwater outflows in a macrotidal environment. Microorganisms were identified using the DNA metabarcoding approach. SEM analysis of quartz collected from the beach surface provided data on the marine and aeolian forces, as well as biological processes ...
Yvonne Battiau‐Queney, Sébastien Monchy, Sandra Ventalon, Marion Delattre, Luen‐Luen Li, Vincent Sipka, Clémentine Gallot, François Guillot, Felipe Artigas   +8 more
wiley   +1 more source

Increased Stability in Carbon Isotope Records Reflects Emerging Complexity of the Biosphere

Frontiers in Earth Science, 2019
Preference for certain stable isotopes (isotope fractionation) during enzyme-mediated reactions is a universal aspect of life. For instance, carbon isotopes are fractionated during anabolic (e.g., photosynthate production) and catabolic (e.g ...
Martin Schobben, Bas van de Schootbrugge
doaj   +1 more source