Spectra and relaxation of Hg atoms and molecules in low temperature matrices. II. H2O/Ar and NH3/Ar matrices

1994 ◽  
Vol 100 (8) ◽  
pp. 5467-5474 ◽  
Author(s):  
C. Crépin ◽  
A. Tramer
Keyword(s):  
Low Temperature ◽  
Atoms And Molecules

scholarly journals Can Self-Replicating Species Flourish in the Interior of a Star?

2020 ◽  
Author(s):  
Luis Anchordoqui ◽  
Eugene M. Chudnovsky
Keyword(s):  
Low Temperature ◽  
Nucleic Acids ◽  
Main Sequence ◽  
Main Sequence Stars ◽  
Atoms And Molecules ◽  
Form Of Life ◽  
Advanced Form ◽  
Life On Earth

The existing view of biological life is that it evolves under suitable conditions in the low-temperature world of atoms and molecules on the surface of a planet. It is believed that any plausible extraterrestrial form of life must resemble the life on Earth that is ruled by biochemistry of nucleic acids, proteins, and sugars. Going against this dogma, we argue that an advanced form of life based upon short-lived species can exist inside main-sequence stars like our Sun.

Manipulation of Atoms and Molecules with the Low-Temperature Scanning Tunneling Microscope

2001 ◽  
Vol 40 (Part 1, No. 6B) ◽  
pp. 4409-4413 ◽  
Author(s):  
Gerhard Meyer ◽  
Francesca Moresco ◽  
Saw Wai Hla ◽  
Jascha Repp ◽  
Kai-Felix Braun ◽  
...  
Keyword(s):  
Low Temperature ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Atoms And Molecules ◽  
Temperature Scanning

Exsolution and inversion in pigeonite from the Whin Sill, Northern England

1978 ◽  
Vol 36 (1) ◽  
pp. 474-475
Author(s):  
P.P.K. Smith
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Homogeneous Nucleation ◽  
Silicate Mineral ◽  
Antiphase Boundaries ◽  
Two Phase ◽  
Primitive Form ◽  
The Core ◽  
Nucleation Mechanisms ◽  
And Inversion

Grains of pigeonite, a calcium-poor silicate mineral of the pyroxene group, from the Whin Sill dolerite have been ion-thinned and examined by TEM. The pigeonite is strongly zoned chemically from the composition Wo8En64FS28 in the core to Wo13En34FS53 at the rim. Two phase transformations have occurred during the cooling of this pigeonite:- exsolution of augite, a more calcic pyroxene, and inversion of the pigeonite from the high- temperature C face-centred form to the low-temperature primitive form, with the formation of antiphase boundaries (APB's). Different sequences of these exsolution and inversion reactions, together with different nucleation mechanisms of the augite, have created three distinct microstructures depending on the position in the grain.In the core of the grains small platelets of augite about 0.02μm thick have farmed parallel to the (001) plane (Fig. 1). These are thought to have exsolved by homogeneous nucleation. Subsequently the inversion of the pigeonite has led to the creation of APB's.

Sign in / Sign up

Export Citation Format

Share Document