## Abstract Reviews the question of the origin of the midgut of insects with its diverse appearances and interpretations. Without doubt the midgut epithelium in some insects is derived from the lower layer, but in other insects from the tips of the stomodaeal and proctodaeal invaginations. The ques
Comments on a novel approach to the role of chirality in the origin of life
β Scribed by Julian Chela-Flores
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 501 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0899-0042
No coin nor oath required. For personal study only.
β¦ Synopsis
We review a recent paperm in which a specific enhancement factor (i.e., a phase transition into a condensed Bose mode) is proposed to account for the observed amplification of the ground state energies of the L-and D-amino acid enantiomers; the difference between these energies is assumed to be due to the neutral parity-violating electroweak interaction. This physical effect initially shifts the enantiomer energies by about 3 x 10 -l9 eV. The proposed phase transition is characterized by a critical temperature T,, which may be studied theoretically by enlarging the standard electroweak theory to include either the top quark or supersymmetry.
π SIMILAR VOLUMES
We propose that a molecular midwife, a #at molecule approximately 10 A s ;10 A s with two hydrophobic faces, was essential to the origin of life. This molecule was positively charged, water soluble and did not strongly associate with itself in solution. It may have been a derivative of phthalocyanin
In a recent issue of this journal, Ruckenstein and Srinivasanl criticized a paper we published in 1980 dealing with platelet adhesion to polymeric substrates. In the same issue, R. E. Baier' published a guest editorial, apparently meant asa comment to our debate with Ruckenstein and Srinivasan, whic