Results 1 to 10 of about 7,007 (208)

Ratiometric glucose sensing based on fluorescent oxygen films and glucose oxidase

Sensing and Bio-Sensing Research, 2017
A new two-layer sensor film was constructed for sensing glucose based on glucose oxidase and oxygen sensing material. The first layer of film containing the oxygen sensor and intra-reference material was polymerized, then the second layer of glucose ...
Fengyu Su, Liqiang Zhang, Xiangxing Kong, Fred Lee, Yanqing Tian, Deirdre R. Meldrum   +5 more
doaj   +1 more source

Comparing biosignatures in aged basalt glass from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Trail, off New Zealand.

PLoS ONE, 2018
Microbial life can leave various traces (or biosignatures) in rocks, including biotic alteration textures, biominerals, enrichments of certain elements, organic molecules, or remnants of DNA.
Andreas Türke, Bénédicte Ménez, Wolfgang Bach   +2 more
doaj   +1 more source

Classification of the Biogenicity of Complex Organic Mixtures for the Detection of Extraterrestrial Life

Life, 2021
Searching for life in the Universe depends on unambiguously distinguishing biological features from background signals, which could take the form of chemical, morphological, or spectral signatures.
Nicholas Guttenberg, Huan Chen, Tomohiro Mochizuki, H. James Cleaves   +3 more
doaj   +1 more source

A Plasma 5-Marker Host Biosignature Identifies Tuberculosis in High and Low Endemic Countries

Frontiers in Immunology, 2021
Background: Several host inflammatory markers have been proposed as biomarkers for diagnosis and treatment response in Tuberculosis (TB), but few studies compare their utility in different demographic, ethnic, and TB endemic settings.Methods: Fifty-four ...
Bih H. Chendi, Bih H. Chendi, Candice I. Snyders, Kristian Tonby, Kristian Tonby, Synne Jenum, Martin Kidd, Gerhard Walzl, Novel N. Chegou, Anne M. Dyrhol-Riise, Anne M. Dyrhol-Riise   +10 more
doaj   +1 more source

HOW VENUS BECAME COOL: SOCIAL AND MORAL DIMENSIONS OF BIOSIGNATURE SCIENCE

Zygon, 2021
A 2020 scientific report indicated the presence of phosphine, a potential biosignature chemical, in the atmosphere of Venus. As a result, Venus instantly became a global cultural celebrity.
doaj   +2 more sources

Correlation Network Analysis for Amino Acid Identification in Soil Samples With the ORIGIN Space-Prototype Instrument

Frontiers in Astronomy and Space Sciences, 2022
The detection of biomolecules on Solar System bodies can help us to understand how life emerged on Earth and how life may be distributed in our Solar System.
Loraine Schwander, Niels F.W. Ligterink, Kristina A. Kipfer, Rustam A. Lukmanov, Valentine Grimaudo, Marek Tulej, Coenraad P. de Koning, Peter Keresztes Schmidt, Salome Gruchola, Nikita J. Boeren, Nikita J. Boeren, Pascale Ehrenfreund, Pascale Ehrenfreund, Peter Wurz, Peter Wurz, Andreas Riedo, Andreas Riedo   +16 more
doaj   +1 more source

A Statistical Approach to Illustrate the Challenge of Astrobiology for Public Outreach

Life, 2017
In this study, we attempt to illustrate the competition that constitutes the main challenge of astrobiology, namely the competition between the probability of extraterrestrial life and its detectability.
Frédéric Foucher, Keyron Hickman-Lewis, Frances Westall, André Brack   +3 more
doaj   +1 more source

A Spectral Comparison of Jarosites Using Techniques Relevant to the Robotic Exploration of Biosignatures on Mars

Life, 2018
The acidic sulfate-rich waters of the Meridiani Planum region were potentially a habitable environment for iron-oxidizing bacteria on ancient Mars. If life existed in this ancient martian environment, jarosite minerals precipitating in these waters may ...
Liane Loiselle, Michael A. McCraig, M. Darby Dyar, Richard Léveillé, Sean R. Shieh, Gordon Southam   +5 more
doaj   +1 more source

Biogenic Metal Nanoparticles: A New Approach to Detect Life on Mars?

Life, 2020
Metal nanoparticles (MNPs) have been extensively studied. They can be produced via different methods (physical, chemical, or biogenic), but biogenic synthesis has become more relevant, mainly for being referred by many as eco-friendly and more ...
Marta Filipa Simões, Cristiane Angélica Ottoni, André Antunes   +2 more
doaj   +1 more source

Network-based integrative multi-omics approach reveals biosignatures specific to COVID-19 disease phases

Frontiers in Molecular Biosciences
BackgroundCOVID-19 disease is characterized by a spectrum of disease phases (mild, moderate, and severe). Each disease phase is marked by changes in omics profiles with corresponding changes in the expression of features (biosignatures).
Francis E. Agamah, Thomas H. A. Ederveen, Michelle Skelton, Darren P. Martin, Emile R. Chimusa, Peter A. C. ’t Hoen   +5 more
doaj   +1 more source