scholarly journals Direct detection of human adenovirus or SARS-CoV-2 with ability to inform infectivity using DNA aptamer-nanopore sensors

2021 ◽  
Vol 7 (39) ◽  
Author(s):  
Ana S. Peinetti ◽  
Ryan J. Lake ◽  
Wen Cong ◽  
Laura Cooper ◽  
Yuting Wu ◽  
...  
Keyword(s):  
Direct Detection ◽  
Human Adenovirus ◽  
Dna Aptamer ◽  
Nanopore Sensors

In vitro selection of DNA aptamer against abrin toxin and aptamer-based abrin direct detection

2007 ◽  
Vol 22 (11) ◽  
pp. 2456-2463 ◽  
Author(s):  
Jijun Tang ◽  
Tao Yu ◽  
Lei Guo ◽  
Jianwei Xie ◽  
Ningsheng Shao ◽  
...  
Keyword(s):  
In Vitro Selection ◽  
Direct Detection ◽  
Dna Aptamer ◽  
Selection Of

Molecular detection of human adenovirus in sediment using a direct detection method compared to the classical polyethylene glycol precipitation

2015 ◽  
Vol 213 ◽  
pp. 65-67 ◽  
Author(s):  
Rodrigo Staggemeier ◽  
Marina Bortoluzzi ◽  
Tatiana Moraes da Silva Heck ◽  
Tiago da Silva ◽  
Fernando Rosado Spilki ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Molecular Detection ◽  
Detection Method ◽  
Direct Detection ◽  
Human Adenovirus ◽  
Polyethylene Glycol Precipitation ◽  
Direct Detection Method

Detection and Characterization of earth-like Planets

1997 ◽  
Vol 161 ◽  
pp. 299-311 ◽  
Author(s):  
Jean Marie Mariotti ◽  
Alain Léger ◽  
Bertrand Mennesson ◽  
Marc Ollivier
Keyword(s):  
Direct Detection ◽  
Contrast Ratio ◽  
Angular Size ◽  
Physical Nature ◽  
Major Axis ◽  
Infrared Emission ◽  
Space Technology ◽  
Semi Major Axis ◽  
Earth Like Planets ◽  
Visible Wavelengths

AbstractIndirect methods of detection of exo-planets (by radial velocity, astrometry, occultations,...) have revealed recently the first cases of exo-planets, and will in the near future expand our knowledge of these systems. They will provide statistical informations on the dynamical parameters: semi-major axis, eccentricities, inclinations,... But the physical nature of these planets will remain mostly unknown. Only for the larger ones (exo-Jupiters), an estimate of the mass will be accessible. To characterize in more details Earth-like exo-planets, direct detection (i.e., direct observation of photons from the planet) is required. This is a much more challenging observational program. The exo-planets are extremely faint with respect to their star: the contrast ratio is about 10−10at visible wavelengths. Also the angular size of the apparent orbit is small, typically 0.1 second of arc. While the first point calls for observations in the infrared (where the contrast goes up to 10−7) and with a coronograph, the latter implies using an interferometer. Several space projects combining these techniques have been recently proposed. They aim at surveying a few hundreds of nearby single solar-like stars in search for Earth-like planets, and at performing a low resolution spectroscopic analysis of their infrared emission in order to reveal the presence in the atmosphere of the planet of CO H2O and O3. The latter is a good tracer of the presence of oxygen which could be, like on our Earth, released by biological activity. Although extremely ambitious, these projects could be realized using space technology either already available or in development for others missions. They could be built and launched during the first decades on the next century.

Human Adenovirus Uptake by Preirnplantation Mouse Embryos

1972 ◽  
Vol 30 ◽  
pp. 268-269
Author(s):  
D. G. Chase ◽  
W. Winters ◽  
L. Piko
Keyword(s):  
Hela Cells ◽  
Human Adenovirus ◽  
Mouse Embryos ◽  
Equilibrium Density ◽  
Cell Stage ◽  
Virus Attachment ◽  
Preimplantation Mouse Embryos ◽  
Embryo Culture Medium ◽  
Preimplantation Mouse ◽  
Mouse Cells

Although the outlines of human adenovirus entry and uncoating in HeLa cells has been clarified in recent electron microscope studies, several details remain unclear or controversial. Furthermore, morphological features of early interactions of human adenovirus with non-permissive mouse cells have not been extensively documented. In the course of studies on the effects of human adenoviruses type 5 (AD-5) and type 12 on cultured preimplantation mouse embryos we have examined virus attachment, entry and uncoating. Here we present the ultrastructural findings for AD-5.AD-5 was grown in HeLa cells and purified by successive velocity gradient and equilibrium density gradient centrifugations in CsCl. After dialysis against PBS, virus was sedimented and resuspended in embryo culture medium. Embryos were placed in culture at the 2-cell stage in Brinster's medium.

A novel enzyme immunoassay for the direct detection of H. pylori antigens in stool

2001 ◽  
Vol 120 (5) ◽  
pp. A492-A493 ◽  
Author(s):  
E HAINDL ◽  
H BENESCH ◽  
A FINCK ◽  
V MUEHISTEIN ◽  
A LEODOLTER ◽  
...  
Keyword(s):  
Enzyme Immunoassay ◽  
Direct Detection ◽  
H Pylori
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