Calculations on spin-paired species in metal-ammonia solutions

1983 ◽  
Vol 87 (8) ◽  
pp. 1464-1466 ◽  
Author(s):  
Neil R. Kestner ◽  
B. K. Rao ◽  
C. W. Finley
Keyword(s):  
Paired Species

Satellite species among the holarctic lampreys (Petromyzonidae)

1979 ◽  
Vol 57 (4) ◽  
pp. 860-867 ◽  
Author(s):  
Vadim D. Vladykov ◽  
Edward Kott
Keyword(s):  
North America ◽  
Stem Species ◽  
Satellite Species ◽  
Paired Species

The new term 'satellite species' is used to replace the less accurate and by now obsolete term 'paired species.' Among lamprey genera a complex of species is usually found: one parasitic or 'stem' species and one or several nonparasitic or 'satellite' species probably derived from it. Among eight genera of holarctic lampreys the interrelation between the number of parasitic (p) and satellite (s) species is as follows: Caspiomyzon, 1p and no s; Petromyzon, 1p and no s; Ichthyomyzon, 3p and 3s; Tetrapleurodon, 1p and 1s; Entosphenus, 3p and 3s; Lampetra in Europe, 1p and 2s, in North America, 1p and 3s; Eudontomyzon in Europe, 1p and 3s, in Asia, 1p and no s; Lethenteron, 1p and 5s. Thus among the six polyspecific genera of the holarctic lampreys, 12 parasitic and 20 satellite species are presently known.

DNA profiles to identify Dillenia species (Dilleniaceae) in Thailand

Phytotaxa ◽  
2017 ◽  
Vol 296 (3) ◽  
pp. 239
Author(s):  
TIKUMPORN THOOPTIANRAT ◽  
ARUNRAT CHAVEERACH ◽  
RUNGLAWAN SUDMOON ◽  
TAWATCHAI TANEE
Keyword(s):  
Genetic Distance ◽  
Genetic Distances ◽  
Rbcl Gene ◽  
Species Pairs ◽  
Unidentified Species ◽  
Dna Profiles ◽  
Intraspecific Genetic Distance ◽  
Rbcl Gene Sequences ◽  
Paired Species

Surveying of the species throughout Thailand revealed 13 identified and one unidentified species including D. aurea, D. excelsa, D. grandifolia, D. hookeri, D. indica, D. obovata, D. ovata, D. parviflora, D. pentagyna, D. philippinensis, D. pulchella, D. reticulata, D. suffruticosa and Dillenia sp. They were phylogenetically examined based on RAPD profiles of 2,290 discrete characters including a monomorphic and 226 polymorphic characteristics. The phylogenetic relationships calculated from theses banding data show that the intraspecific genetic similarity (S) values ranged from 0.990 to 1.000, and the interspecific S values ranged from 0.520 to 0.790. The RAPD method can be effectively used in Dillenia study. However, its quality of unreproducible method, it cannot be reasonable used in any study on specific genes or areas. In additions, sequences from two molecular regions, rbcL gene and psbA-trnH spacer, were analyzed and determined for genetic distances. The rbcL gene sequences were rather ineffective, as all of the paired species displayed no or low genetic distance values. The psbA-trnH spacer sequences were rather effective, with only one pair (D. reticulata and D. parviflora) showing low genetic distance values. The other species pairs indicated rather far genetic distances, ranging from 0.006 (D. parviflora and D. grandifolia) to 0.376 (Dillenia specie and D. indica). Intraspecific genetic distance values ranged from 0–0.003 and 0–0.013 for rbcL and psbA-trnH spacer regions, respectively. Based on the results from both nucleotide variations and DNA fingerprinting, D. grandifolia and D. ovata were distinct Dillenia species.

Dipolar atoms, spin-paired species and the anomalous behavior of NaNaBr solutions

1989 ◽  
Vol 162 (1-2) ◽  
pp. 27-31 ◽  
Author(s):  
L.F. Xu ◽  
A. Selloni ◽  
M. Parrinello
Keyword(s):  
Anomalous Behavior ◽  
Paired Species
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