1. Introduction
... - In rats in vivo, TCS is metabolized predominantly by glucoronidation, sulfation, and hydroxylation, with the end-products of these three processes being the only metabolites detected in urine following oral exposure to 5 mg/kg (Wu et al. 2010). Other sources - Calculations in the study were diff ...
... - In rats in vivo, TCS is metabolized predominantly by glucoronidation, sulfation, and hydroxylation, with the end-products of these three processes being the only metabolites detected in urine following oral exposure to 5 mg/kg (Wu et al. 2010). Other sources - Calculations in the study were diff ...
Electromagnetic spectrum - Purdue Physics
... The retina is a mosaic of two basic types of photoreceptors, rods, and cones. Cones are highly concentrated in a region near the center of the retina called the fovea. The maximum concentration of cones is roughly 180,000 per mm2 there and the density decreases rapidly outside of the fovea to less t ...
... The retina is a mosaic of two basic types of photoreceptors, rods, and cones. Cones are highly concentrated in a region near the center of the retina called the fovea. The maximum concentration of cones is roughly 180,000 per mm2 there and the density decreases rapidly outside of the fovea to less t ...
Prebiotic Chemistry: Common Origins of Glycerol, Amino Acids, and
... of 1 via Cu(I)-Cu(II) photochemistry to catalyse the reaction (Ritson et al., 2013; Ritson et al., 2014). The synthesis of 3 is a central feature because intermediates and the product of the pathway feed in to other pathways of the network. For instance, with hydrogen sulfide as a reducing agent 2-h ...
... of 1 via Cu(I)-Cu(II) photochemistry to catalyse the reaction (Ritson et al., 2013; Ritson et al., 2014). The synthesis of 3 is a central feature because intermediates and the product of the pathway feed in to other pathways of the network. For instance, with hydrogen sulfide as a reducing agent 2-h ...
Red shift in spectra of galaxies
... were considered. Such adjustment according to said widening mechanisms does not lead to complete reproduction of the registered part of the micropinch radiation spectrum. This is the evidence (under the condition of independent conformation of the macroscopic parameters adjustment) of the existence ...
... were considered. Such adjustment according to said widening mechanisms does not lead to complete reproduction of the registered part of the micropinch radiation spectrum. This is the evidence (under the condition of independent conformation of the macroscopic parameters adjustment) of the existence ...
Average absolute magnitude
... The wavelength of the Lyman-alpha line in the hydrogen spectrum is measured in the laboratory to be 122 nm. In the hydrogen spectrum of a galaxy, the Lyman-alpha line is measured to be 147 nm. Determine the distance of this galaxy from the Earth. Assume that the Hubble constant H0 is 75km s–1 M pc– ...
... The wavelength of the Lyman-alpha line in the hydrogen spectrum is measured in the laboratory to be 122 nm. In the hydrogen spectrum of a galaxy, the Lyman-alpha line is measured to be 147 nm. Determine the distance of this galaxy from the Earth. Assume that the Hubble constant H0 is 75km s–1 M pc– ...
The Mechanism and History of Life
... Earth forms from basic chemical compounds Earth cools, allowing for deep vent formation T=100-150C Basic Elements form chemical monomers ex. Amino Acids etc. Chemicals attach to surface creating specific environments These environments localize metabolic processes Metabolic process provide environme ...
... Earth forms from basic chemical compounds Earth cools, allowing for deep vent formation T=100-150C Basic Elements form chemical monomers ex. Amino Acids etc. Chemicals attach to surface creating specific environments These environments localize metabolic processes Metabolic process provide environme ...
Early Star Formation: The Radial Infall Model
... discuss star formation. In the night sky there are many dark patches. Yet when a radio telescope is pointed at it one receives radio radiation. How do we explain this? The first to explain it was Bart Bok in 1946 (Bok 1948) when he claimed that the dark nebulae are the sites of stellar birth. It tur ...
... discuss star formation. In the night sky there are many dark patches. Yet when a radio telescope is pointed at it one receives radio radiation. How do we explain this? The first to explain it was Bart Bok in 1946 (Bok 1948) when he claimed that the dark nebulae are the sites of stellar birth. It tur ...
sc_examII_spring_2002 - University of Maryland Astronomy
... 2. The smaller the parallax angle for a star, A. the less massive the star. B. the more massive the star. C. the smaller the distance to the star. D. the greater the distance to the star. E. both A and C 3. By combining information from both the light curve and spectrum of Algol, the demon star, ast ...
... 2. The smaller the parallax angle for a star, A. the less massive the star. B. the more massive the star. C. the smaller the distance to the star. D. the greater the distance to the star. E. both A and C 3. By combining information from both the light curve and spectrum of Algol, the demon star, ast ...
Models of the Solar System
... system, with the earth at rest in the center, and the moon, sun and planets orbiting around it. In order to match the model to the observations, the planets were also thought to move on epicycles, smaller circles centered on the circular orbits. For the planets Mercury and Venus, the center of the e ...
... system, with the earth at rest in the center, and the moon, sun and planets orbiting around it. In order to match the model to the observations, the planets were also thought to move on epicycles, smaller circles centered on the circular orbits. For the planets Mercury and Venus, the center of the e ...
EXPOSE
EXPOSE is a multi-user facility mounted outside the International Space Station dedicated to astrobiology. EXPOSE was developed by the European Space Agency (ESA) for long-term spaceflights and was designed to allow exposure of chemical and biological samples to outer space while recording data during exposure.The results will contribute to our understanding of photobiological processes in simulated radiation climates of planets (e.g. early Earth, early and present Mars, and the role of the ozone layer in protecting the biosphere from harmful UV-B radiation), as well as studies of the probabilities and limitations for life to be distributed beyond its planet of origin. EXPOSE data support long-term in situ studies of microbes in artificial meteorites, as well as of microbial communities from special ecological niches. Some EXPOSE experiments investigated to what extent particular terrestrial organisms are able to cope with extraterrestrial environmental conditions. Others tested how organic molecules react when subjected for a prolonged period of time to unfiltered solar light.