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nature
The cometary connection with prebiotic chemistry
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| 1984
the primitive Earth. The second part of the present review examines the chemical nature of comets as can be reconstructed from (so far) very ...
Synthesis of biological molecules on molecular sieves
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| 1975
analyzer. The quantity of urea produced largely depends on the nature of the saturating cation. Experiments $ using^{14} $CO confirm that the amino ...
Examination of drivers' cell phone use behavior at intersections by using naturalistic driving data
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| 2015
conditions. Naturalistic driving by its nature provides a natural and realistic way to examine drivers' behaviors and associated factors for cell ...
Pre-enzymic origin of metabolic redox processes and of the energy storage processes
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| 1974
degradations of carbon chains or formations of condensed bonds shows that such processes are conditioned by the nature of the substrates and not by the ...
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| 1977
a 100 million years. One can explain the conservative nature of actin evolution as a sequence of its unique tightly fitted structure rich in ...
What happens when drivers face hazards on the road?
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| 2016
The current study aims to obtain knowledge about the nature of the processes involved in Hazard Perception, using measurement techniques to ...
Reflections on the origin of optical asymmetry on earth
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| 1981
-interactions too small to be detectable, and if it is so small, can it be of any significance? In view of the contradictory and confusing nature of the ...
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| 2016
hazard. The nature of the in-vehicle visual interruption presented to the participants was varied across conditions: (1) Visual interruptions ...
The origin of optical asymmetry on earth
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| 1975
Summary The nature of optical isomerism, and the problem of the origin of optical asymmetry in relation to the origin of life are defined ...
The length of the transition period from the reducing to the neutral biosphere
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| 1977
Abstract The development of the complicated mechanisms for $ N_{2} $ fixation, which in nature is an endergonic process and requires a ...
Stanford Workshop on Extraterrestrial civilization Opening a new Scientific Dialog
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| 1975
remain skeptical in the absence of unimpeachable evidence concerning the nature of the phenomenon. ...
Planetary systems and extraterrestrial life
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| 1974
of double stars. In the solar neighborhood, at least 60% of the stars are known to be members of double systems. The nature of the ‘dark ...
Entropy of the genetic information and evolution
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| 1975
. Because of the biased nature of the genetic code table, increase of entropy of amino acid sequences is possible with biased nucleotide sequence ...
The phenomenon of formation of prebiological compounds in volcanic processes
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| 1977
-boiling (b.p. over 250°C) organic compounds of a complex structure. These are represented by hydrocarbons of saturated and aromatic nature, and ...
Formation of prebiochemical compounds in models of the primitive Earth's atmosphere
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| 1975
mixtures of $ CH_{4} $ and $ H_{2} $S at low pressure. The nature of the products formed in the gaseous phase, and the influence of several ...
The pyrolytic release experiment: Measurement of carbon assimilation
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| 1976
this experiment minimal assumptions are made about the nature of possible life forms. Such species are assumed to have adapted to the aridity ...
Experimental attempts for the study of the origin of optical activity on earth
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| 1974
nature preferred onlyone of two possible enantiomers, e.g. the L-amino-acids and D-sugars. Was there or is there a chance for an antipodic ...
Archean photoautotrophy: Some alternatives and limits
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Online Contents
| 1979
Abstract From the Archean geological record, one can infer that photoautotrophy evolved early in earth history; however, the nature of this ...
Soil stabilization by a prokaryotic desert crust: Implications for Precambrian land biota
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Online Contents
| 1979
measure of the potential for spreading of the mat in nature via the motility of the trichomes. Dehydration resistence of the sheath modifies the ...
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Online Contents
| 1980
depends, therefore, on environmental conditions and the nature of sulphate reservoirs during reduction. Sulphur isotope ratios can and have been ...
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