Results 71 to 80 of about 13,992,929 (227)

Smart Hydrogel Doped by Metal–Organic Frameworks for Renewable Self‐Pumping Enzymatic Reactors

open access: yesAdvanced Science
The construction of high‐performance immobilized enzymes is vastly desired for green biotransformation. Although hydrogels offer significant potential for facilitating biomedical applications of enzymes due to their flexibility, macroscopic ...
Yuxi Zhu   +7 more
doaj   +1 more source

PROSPECTS FOR LIFE IN THE SUBGLACIAL LAKE VOSTOK, EAST ANTARCTICA

open access: yesЛëд и снег, 2015
The objective was to estimate the genuine microbial content of ice samples from refrozen water (accretion ice) from the subglacialLakeVostok(Antarctica) buried beneath the 4-km thick East Antarctic ice sheet as well as surface snow nearby Vostok station.
S. A. Bulat, D. Marie, J.-R. Petit
doaj   +1 more source

Subminiaturized gas chromatograph gives fast, efficient analysis [PDF]

open access: yes, 1966
Space oriented, lightweight, subminiaturized gas chromatograph analyzes gas samples in a few seconds with a carrier gas flow of one milliliter per second. In extraterrestrial exploration, the system could be used with a mass spectrometer for detection of
Wilhite, W. F.
core   +1 more source

Microfluidic cartridge with integrated array of amorphous silicon photosensors for chemiluminescence detection of viral DNA [PDF]

open access: yes, 2016
Portable and simple analytical devices based on microfluidics with chemiluminescence detection are particularly attractive for point-of-care applications, offering high detectability and specificity in a simple and miniaturized analytical format ...
Bonvicini, F.   +7 more
core   +1 more source

Miniature sonar fish tag [PDF]

open access: yes, 1975
Self-powered sonar device may be implanted in body of fish. It transmits signal that can be detected with portable tracking gear or by automatic detection-and-tracking system. Operating life of over 4000 hours may be expected.
Ferguson, R. L., Lovelady, R. W.
core   +1 more source

Signal coverage approach to the detection probability of hypothetical extraterrestrial emitters in the Milky Way

open access: yes, 2017
The lack of evidence for the existence of extraterrestrial life, even the simplest forms of animal life, makes it is difficult to decide whether the search for extraterrestrial intelligence (SETI) is more a high-risk, high-payoff endeavor than a futile ...
Grimaldi, Claudio
core   +1 more source

Sequencing nothing: Exploring failure modes of nanopore sensing and implications for life detection.

open access: yesLife sciences and space research, 2018
The detection of extant life is a major focus of many planned future planetary missions, a current challenge of which is the ability to target biomarkers capable of providing unambiguous evidence of life.
A. Pontefract   +4 more
semanticscholar   +1 more source

Application of chemotactic behavior for life detection

open access: yesFrontiers in Astronomy and Space Sciences
One excellent biosignature for the present detection of microbial life on Earth is motility, leading to its growing interest within the astrobiological community as an observable attribute that, if detected during future in situ space missions, could ...
Max Riekeles   +8 more
doaj   +1 more source

Single Molecule DNA Detection with an Atomic Vapor Notch Filter

open access: yes, 2015
The detection of single molecules has facilitated many advances in life- and material-sciences. Commonly, it founds on the fluorescence detection of single molecules, which are for example attached to the structures under study.
Gerhardt, Ilja   +5 more
core   +1 more source

Biomarker Preservation and Survivability Under Extreme Dryness and Mars-Like UV Flux of a Desert Cyanobacterium Capable of Trehalose and Sucrose Accumulation

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Unraveling how long life can persist under extreme dryness and what kind of environmental extremes can be faced by dried microorganisms is relevant to understand Mars habitability and to search for life on planets with transient liquid water availability.
Claudia Fagliarone   +5 more
doaj   +1 more source

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