Hydration Promoted by a Methylene Group: A Volumetric Study on Alkynes in Water

2018 ◽  
Vol 122 (11) ◽  
pp. 2985-2991 ◽  
Author(s):  
Satoshi Shibuta ◽  
Hiroshi Imamura
Keyword(s):  
Volumetric Study ◽  
Group A ◽  
Methylene Group

A SERIES OF MODEL COMPOUNDS FOR THE STUDY OF AROMATIC REACTIONS

1965 ◽  
Vol 43 (2) ◽  
pp. 337-342
Author(s):  
S. Safe ◽  
R. Y. Moir
Keyword(s):  
Nitro Group ◽  
Systematic Variation ◽  
Model Compounds ◽  
Group A ◽  
Methylene Group

A series of halogenated phthalides was prepared in which there was a systematic variation in the identity, position, and degree of activation of the halogen, and in the activation of the methylene group. A study was made of the selective reductive removal of halogen in the presence of another halogen, or of a nitro group.

STUDIES IN THE POLYOXYPHENOL SERIES: IX. THE SYNTHESIS OF PAPAVERINE AND PAPAVERALDINE BY THE POMERANZ-FRITSCH METHOD

1955 ◽  
Vol 33 (5) ◽  
pp. 729-742 ◽  
Author(s):  
Donald A. Guthrie ◽  
Arlen W. Frank ◽  
C. B. Purves
Keyword(s):  
Sulphuric Acid ◽  
Acetyl Derivative ◽  
Mercury Complex ◽  
Crude Product ◽  
Group A ◽  
Methylene Group

Fritsch's cyclization of N-(α-veratrylveratrylidene)-aminoacetal in sulphuric acid was shown to give 1.1% of papaverine and 23% of an isomer, m.p. 164.5–165.5 °C.; hydrochloride, m.p. 212 °C. decomp., which was supposed to be 4,5-bis(3,4-dimethoxyphenyl)-2H-pyrrolenine, produced by an internal condensation of the acetal or the corresponding aldehyde with the reactive methylene group. A similar structure was proposed for another unidentified isomer prepared by Schlittler and Müller. Hydrogenation of Fritsch's acetal gave N-(α-veratryl-veratryl)-aminoacetal, m.p. 69.5–70 °C., which was cyclized to a base, m.p. 155.5–156 °C.; N-acetyl derivative, m.p. 203.5–204 °C., formulated as 2,3-bis(3,4-dimethoxyphenyl)-3-pyrroline. Substances presumed to be the intermediate aldehyde and aldol were isolated as colorless oils. Condensation of the diketone veratril with aminoacetal, followed by cyclization of the crude product, constituted a new two-step synthesis of papaveraldine in 8% yield, and the reduction of the latter to papaverine was known.Other crystalline compounds prepared incidentally and thought to be new were veratril monoanil, m.p. 172–173 °C.; α,α′-biveratrylideneaminoacetal, m.p. 101–102 °C.; a compound formulated as 2,3-bis(3,4-dimethoxyphenyl)-4-ethylmer-captopyrrolidine hydrochloride, m.p. 184–185 °C; from this an unidentified mercury complex, m.p. 109 °C. decomp.; 4,4′dibenzyloxy-3,3′-dimethoxy-desoxybenzoin, m.p. 141–142 °C; and its oxime, m.p. 137.5 °C.

Electron microscopic radioautographic studies on the incorporation of 3H proline in the glomerular basement membrane (GBM) in antistreptococcal-cell-membrane (SCM) injected mice

1984 ◽  
Vol 42 ◽  
pp. 188-189
Author(s):  
R.P. Nayyar ◽  
C.F. Lange ◽  
J. L. Borke
Keyword(s):  
Body Weight ◽  
Cell Membrane ◽  
Basement Membrane ◽  
Glomerular Basement Membrane ◽  
Mesangial Matrix ◽  
Electron Microscopic ◽  
Group A ◽  
Injection Protocol

Streptococcal cell membrane (SCM) antiserum injected mice show a significant thickening of glomerular basement membrane (GBM) and an increase in mesangial matrix within 4 to 24 hours of antiserum administration (1,2,3). This study was undertaken to evaluate the incorporation of 3H proline into glomerular cells and GBM under normal and anti-SCM induced conditions. Mice were administered, intraperitoneally, 0.1 ml of normal or anti-SCM serum followed by a 10 µC/g body weight injection of 3H proline. Details of the preparation of anti-SCM (Group A type 12 streptococcal pyogenes) and other sera and injection protocol have been described elsewhere (2). After 15 minutes of isotope injection a chase of cold proline was given and animal sacrificed at 20 minutes, 1,2,4,8,24 and 48 hours. One of the removed kidneys was processed for immunofluorescence, light and electron microscopic radioautographic studies; second kidney was used for GBM isolation and aminoacid analysis.

An ultrastructural study of sertoli cells in two geographically isolated populations of Aphanius dispar

1992 ◽  
Vol 50 (1) ◽  
pp. 548-549
Author(s):  
Taber A. Ba-Omar ◽  
Philip F. Prentis
Keyword(s):  
Ultrastructural Level ◽  
Uranyl Acetate ◽  
Freshwater Teleost ◽  
Isolated Populations ◽  
En Bloc ◽  
The North ◽  
Group A ◽  
Ultrathin Sections ◽  
Group B ◽  
Geographically Isolated

We have recently carried out a study of spermiogenic differentiation in two geographically isolated populations of Aphanius dispar (freshwater teleost), with a view to ascertaining variation at the ultrastructural level. The sampling areas were the Jebel Al Akhdar in the north (Group A) and the Dhofar region (Group B) in the south. Specimens from each group were collected, the testes removed, fixed in Karnovsky solution, post fixed in OsO, en bloc stained with uranyl acetate and then routinely processed to Agar 100 resin, semi and ultrathin sections were prepared for study.

Cultural and Linguistic Adaptation of the Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V) Into Hindi

2020 ◽  
Vol 63 (12) ◽  
pp. 3974-3981
Author(s):  
Ashwini Joshi ◽  
Isha Baheti ◽  
Vrushali Angadi
Keyword(s):  
Strong Correlation ◽  
Concurrent Validity ◽  
Interrater Reliability ◽  
Voice Quality ◽  
Weak Correlation ◽  
Voice Assessment ◽  
Perceptual Evaluation ◽  
Severity Grade ◽  
Normal Voice ◽  
Group A

Aim The purpose of this study was to develop and assess the reliability of a Hindi version of the Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V). Reliability was assessed by comparing Hindi CAPE-V ratings with English CAPE-V ratings and by the Grade, Roughness, Breathiness, Asthenia and Strain (GRBAS) scale. Method Hindi sentences were created to match the phonemic load of the corresponding English CAPE-V sentences. The Hindi sentences were adapted for linguistic content. The original English and adapted Hindi CAPE-V and GRBAS were completed for 33 bilingual individuals with normal voice quality. Additionally, the Hindi CAPE-V and GRBAS were completed for 13 Hindi speakers with disordered voice quality. The agreement of CAPE-V ratings was assessed between language versions, GRBAS ratings, and two rater pairs (three raters in total). Pearson product–moment correlation was completed for all comparisons. Results A strong correlation ( r > .8, p < .01) was found between the Hindi CAPE-V scores and the English CAPE-V scores for most variables in normal voice participants. A weak correlation was found for the variable of strain ( r < .2, p = .400) in the normative group. A strong correlation ( r > .6, p < .01) was found between the overall severity/grade, roughness, and breathiness scores in the GRBAS scale and the CAPE-V scale in normal and disordered voice samples. Significant interrater reliability ( r > .75) was present in overall severity and breathiness. Conclusions The Hindi version of the CAPE-V demonstrates good interrater reliability and concurrent validity with the English CAPE-V and the GRBAS. The Hindi CAPE-V can be used for the auditory-perceptual voice assessment of Hindi speakers.

A Test of Satiation as a Function of Adaptation in Stuttering

1969 ◽  
Vol 12 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Harold A. Peterson ◽  
Mary Beth Rieck ◽  
Rita K. Hoff
Keyword(s):  
Semantic Differential ◽  
Repeated Readings ◽  
Group A ◽  
Relationship Of ◽  
The Relationship

To test the relationship of adaptation and satiation as hypothesized by Jakobovits, satiation of meaning as a function of repeated readings for adaptation was measured in the performance of 14 male stutterers. The subjects as a group exhibited both satiation and adaptation, but the two phenomena did not occur simultaneously in a significant number of the members of the group. A reduction in meaningfulness, as measured by the semantic differential, was not shown to be a significant factor in the reduction of stuttering frequency for the individuals in the group. Satiation and adaptation were not established as the same phenomenon, although the two may still be related through another factor.

Fanconi anaemia group A (FANCA) mutations in Israeli non-Ashkenazi Jewish patients

2000 ◽  
Vol 111 (1) ◽  
pp. 338-343 ◽  
Author(s):  
H. Tamary ◽  
R. Bar-Yam ◽  
L. Shalmon ◽  
G. Rachavi ◽  
M. Krostichevsky ◽  
...  
Keyword(s):  
Fanconi Anaemia ◽  
Ashkenazi Jewish ◽  
Group A
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