Coupling and Collapse
... • If the particle moves in a radiation bath it will be suffering scattering by the many photons encountered on its path. • The scattering is anisotropic since the particle is moving in the direction defined by its velocity. • The particle will be hitting more photons in the front than in the back. • ...
... • If the particle moves in a radiation bath it will be suffering scattering by the many photons encountered on its path. • The scattering is anisotropic since the particle is moving in the direction defined by its velocity. • The particle will be hitting more photons in the front than in the back. • ...
Amino Acid Synthesis in a Supercritical Carbon Dioxide
... discharge in reducing gasses (CH4, NH3, H2, and H2O) through Miller’s experiment has given experimental support to the chemical evolution [2]. After Miller’s report, many prebiotic syntheses in various types of geological environments have been examined, including volcanoes [3], hydrothermal system ...
... discharge in reducing gasses (CH4, NH3, H2, and H2O) through Miller’s experiment has given experimental support to the chemical evolution [2]. After Miller’s report, many prebiotic syntheses in various types of geological environments have been examined, including volcanoes [3], hydrothermal system ...
2 The Birth of the Solar System: Some Unconventional Ideas
... planet-forming material, and were subsequently tossed out into the surrounding wilderness. One version of the theory indicates that Uranus and Neptune even swapped places as the most remote major planet, although at that time neither was as remote as it is today. For all we know, there may have been ...
... planet-forming material, and were subsequently tossed out into the surrounding wilderness. One version of the theory indicates that Uranus and Neptune even swapped places as the most remote major planet, although at that time neither was as remote as it is today. For all we know, there may have been ...
Document
... are conductors of those EMR. Those spiral formations without their weak contact with each other compose magnetic field of any space. In general they can be called the basis of Vacuum. Their excitation in one point of space provokes motion of such excitation to another point of space. Those excitatio ...
... are conductors of those EMR. Those spiral formations without their weak contact with each other compose magnetic field of any space. In general they can be called the basis of Vacuum. Their excitation in one point of space provokes motion of such excitation to another point of space. Those excitatio ...
here - Stars `r` Us!
... caused (inevitably) by the somewhat arbitrary selection of reactions to include in the database, the extent to which gas-grain processes are included in the models, and the uncertainty associated with many of the reaction-rate coefficients. Nevertheless, it is clear that very many species that have ...
... caused (inevitably) by the somewhat arbitrary selection of reactions to include in the database, the extent to which gas-grain processes are included in the models, and the uncertainty associated with many of the reaction-rate coefficients. Nevertheless, it is clear that very many species that have ...
Sysmex UF-1000i flow cytometer capability to discriminate Gram
... automation, standardization and above all for the very short TAT for reporting results of negative urine samples.1,2 In this study, as well as the revaluation of the optimal cutcut-off for bacterial counts, we wanted to assess the instrumental ability ability to discriminate the type of causative or ...
... automation, standardization and above all for the very short TAT for reporting results of negative urine samples.1,2 In this study, as well as the revaluation of the optimal cutcut-off for bacterial counts, we wanted to assess the instrumental ability ability to discriminate the type of causative or ...
Bacillus anthracis
... They are highly resistant to environmental stresses - high temperature (some endospores can be boiled for several hours and retain their viability), - irradiation, - strong acids, - disinfectants, etc. Their differentiation begins when a population of vegetative cells passes out of the exponential p ...
... They are highly resistant to environmental stresses - high temperature (some endospores can be boiled for several hours and retain their viability), - irradiation, - strong acids, - disinfectants, etc. Their differentiation begins when a population of vegetative cells passes out of the exponential p ...
18.3 Intelligent Life in the Galaxy
... algae. Both resemble the droplets in the previous image. ...
... algae. Both resemble the droplets in the previous image. ...
UV habitable zones around M stars - IAFE
... (M3V), HIP 109388 (M3.5V) and HIP 113020 (M4V). In Table 1 we list some physical parameters of the host stars and their corresponding planets. The flare stars AD Leo (M3.5Ve) and EV Lac (M4.5Ve) were also studied to analyze the influence of flares on living systems. To study the influence of near UV ...
... (M3V), HIP 109388 (M3.5V) and HIP 113020 (M4V). In Table 1 we list some physical parameters of the host stars and their corresponding planets. The flare stars AD Leo (M3.5Ve) and EV Lac (M4.5Ve) were also studied to analyze the influence of flares on living systems. To study the influence of near UV ...
Polarization radiation from the accretion disk and
... Unfortunately, when modelling astronomical objects, we are often (not to say always) confronted with very complicated geometrical scenarios. Obviously, we do not have the freedom, as usual in laboratory experiments, to set things in such a way to get what is generally called the “good geometry”. It ...
... Unfortunately, when modelling astronomical objects, we are often (not to say always) confronted with very complicated geometrical scenarios. Obviously, we do not have the freedom, as usual in laboratory experiments, to set things in such a way to get what is generally called the “good geometry”. It ...
Organic Chemistry of Carbonaceous Meteorites
... In September 1969, over 100 kg of a particularly important carbonaceous chondrite fell near Murchison, Victoria, Australia. The Murchison CM2 meteorite is rich in volatile compounds, containing over 2% carbon by weight. Due to its pristine nature and the fact that a large amount of the Murchison met ...
... In September 1969, over 100 kg of a particularly important carbonaceous chondrite fell near Murchison, Victoria, Australia. The Murchison CM2 meteorite is rich in volatile compounds, containing over 2% carbon by weight. Due to its pristine nature and the fact that a large amount of the Murchison met ...
A Plausible Simultaneous Synthesis of Amino Acids and Simple
... a role in shaping prebiotic environments and the chemical reactions that may have occurred therein. Other potential prebiotic polymerization agents such as carbonyl sulfide (COS) have been proposed,[11] although the overall efficiency with respect to the variety of amino acids that can undergo polym ...
... a role in shaping prebiotic environments and the chemical reactions that may have occurred therein. Other potential prebiotic polymerization agents such as carbonyl sulfide (COS) have been proposed,[11] although the overall efficiency with respect to the variety of amino acids that can undergo polym ...
The galaxy correlation function and power spec- trum
... Hubble flow. In the present context this means that the redshifts we measure will have contributions from peculiar velocities, and so if we naively plug the observed redshift into equation (25) we will over- or underestimate the distance to a given galaxy. In the linear regime, this will cause an o ...
... Hubble flow. In the present context this means that the redshifts we measure will have contributions from peculiar velocities, and so if we naively plug the observed redshift into equation (25) we will over- or underestimate the distance to a given galaxy. In the linear regime, this will cause an o ...
Fulltext PDF
... What more do we see on the solar surface? When one looks in the integrated light, what one generally finds are dark spots of varying size and shapes, lasting from a few hours to several weeks and months. In Fig. 10 is shown a full disk photoheliogram with a large number of spots distributed over the ...
... What more do we see on the solar surface? When one looks in the integrated light, what one generally finds are dark spots of varying size and shapes, lasting from a few hours to several weeks and months. In Fig. 10 is shown a full disk photoheliogram with a large number of spots distributed over the ...
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.