scholarly journals Experimental Comparative Study of Dynamic Behavior in Solution Phase of C-Tetra(phenyl)resorcin[4]arene and C-Tetra(phenyl)pyrogallol[4]arene

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2275
Author(s):  
José Luis Casas-Hinestroza ◽  
Miguel Ángel Vela Suazo ◽  
Mauricio Maldonado Villamil
Keyword(s):  
Comparative Study ◽  
Experimental Evidence ◽  
Dynamic Behavior ◽  
Solution Phase ◽  
Chair Conformer ◽  
Synthesis Conditions

The synthesis of phenyl-resorcinarenes and pyrogallolarenes is known to produce a conformational mixture of cone and chair isomers. Depending on the synthesis conditions the composition of the conformational mixture is variable; however, the cone conformer is the greatest proportion of phenyl-resorcin[4]arenes and chair conformer of pyrogallol[4]arenes. The experimental evidence suggests that phenyl-substituted resorcinarene and pyrogallolarene exist as a dynamic boat in solution.

Comparative study of solution phase RT-PCR and RT in situ PCR for HCV RNA in HCV infected patients

1998 ◽  
Vol 28 ◽  
pp. 105
Author(s):  
Zs. Simon ◽  
G. Lotz ◽  
B. Nemes ◽  
F. Szalav ◽  
G. Lengyel ◽  
...  
Keyword(s):  
Comparative Study ◽  
Solution Phase ◽  
Hcv Rna ◽  
Rt Pcr ◽  
In Situ Pcr

A Comparative Study of Disordered Attention in Schizophrenia

1962 ◽  
Vol 108 (455) ◽  
pp. 487-500 ◽  
Author(s):  
James Chapman ◽  
Andrew McGhie
Keyword(s):  
Comparative Study ◽  
Experimental Evidence ◽  
Visual Discrimination ◽  
Retinal Image ◽  
Visual Stimuli ◽  
Size Constancy ◽  
Schizophrenic Patients

In recent years there has been increasing experimental evidence that specific disturbances of perception occur in schizophrenia. Reduced size constancy in schizophrenic patients has been reported in studies by Raush (13), Crookes (6), and Weckowicz (16). Further investigations by Weckowicz and his colleagues (17), have also demonstrated reduced distance constancy in schizophrenia. (The retinal image of an object alters proportionately with the distance at which it is perceived. Size and distance constancy refer to our normal ability to compensate for changes in the stimulus and thereby to retain a stable perception of the object.) Brengelmann (3) and Angyal (1) have shown that schizophrenic patients have difficulty in reproducing briefly exposed visual stimuli. Penrose (12) has shown that schizophrenics perform poorly in a variety of tests involving visual discrimination.

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