Empirical correlations in ultraviolet spectra of substituted benzenes. 2. Compounds with electron-releasing "parent group"

1988 ◽  
Vol 53 (3) ◽  
pp. 657-660 ◽  
Author(s):  
Edward J. Cowles
Keyword(s):  
Empirical Correlations ◽  
Substituted Benzenes ◽  
Parent Group ◽  
Ultraviolet Spectra

Ultraviolet spectra and structure of the isomeric dihydroxy- and diamino-substituted benzenes

1972 ◽  
Vol 13 (2) ◽  
pp. 253-259 ◽  
Author(s):  
J.S. Yadav ◽  
P.C. Mishra ◽  
D.K. Rai
Keyword(s):  
Substituted Benzenes ◽  
Ultraviolet Spectra

New Linear Law and Effects Relating the Ultraviolet Spectra of Substituted Benzenes and the Migration (Spectroscopic) Moment

1964 ◽  
Vol 86 (20) ◽  
pp. 4276-4282 ◽  
Author(s):  
Manuel. Ballester ◽  
Juan. Riera ◽  
Leonard. Spialter
Keyword(s):  
Substituted Benzenes ◽  
Ultraviolet Spectra

Infrared and ultraviolet spectra of 3-fluorobenzoylchloride

1976 ◽  
Vol 73 ◽  
pp. 902-904
Author(s):  
G. N. R. Tripathi ◽  
V. M. Pandey
Keyword(s):  
Ultraviolet Spectra

THE DYNAMICAL STATE OF THE ATMOSPHERE OF THE SUPERGIANT ALPHA CYGNI (A2 Iae) DERIVED FROM HIGH-RESOLUTION ULTRAVIOLET SPECTRA

1988 ◽  
Vol 49 (C1) ◽  
pp. C1-383-C1-386
Author(s):  
B. BOER ◽  
C. de JAGER ◽  
H. NIEUWENHUIJZEN
Keyword(s):  
High Resolution ◽  
Ultraviolet Spectra ◽  
Dynamical State

Biracial Stereotypes Explored

2019 ◽  
Author(s):  
Allison Skinner ◽  
Sylvia Perry ◽  
Sarah Gaither
Keyword(s):  
Social Groups ◽  
Parent Group ◽  
Lower Status ◽  
Parent Groups ◽  
Fitting In ◽  
The U.S

Stereotypes often guide our perceptions of members of social groups. However, research has yet to document what stereotypes may exist for the fastest growing youth demographic in the U.S.—biracial individuals. Across seven studies (N = 1,104) we investigate what stereotypes are attributed to various biracial groups, whether biracial individuals are stereotyped as more similar to their lower status monoracial parent group (trait hypodescent), and whether contact moderates these stereotypes. Results provide evidence of some universal biracial stereotypes that are applied to all biracial groups: attractive and not fitting in or belonging. We also find that all biracial groups are attributed a number of unique stereotypes (i.e., which are not associated with their monoracial parent groups). However, across all studies, we find little evidence of trait hypodescent and no evidence that the tendency to engage in trait hypodescent varies as a function of contact.

Effects of Sonication Time on the Stability and Viscosity of Functionalized MWCNT-Based Nanolubricants

2020 ◽  
Vol 16 (4) ◽  
pp. 639-654
Author(s):  
Ahmet Selim Dalkilic ◽  
Bedri Onur Küçükyıldırım ◽  
Ayşegül Akdoğan Eker ◽  
Faruk Yıldız ◽  
Altuğ Akpinar ◽  
...  
Keyword(s):  
Effective Viscosity ◽  
Mass Concentration ◽  
Measured Data ◽  
Sonication Time ◽  
Empirical Correlations ◽  
Thermal Systems ◽  
The Stability ◽  
Rotary Viscometer ◽  
Functionalized Mwcnts ◽  
Measured Viscosity

Background: Active scholars in the nanofluid field have continuously attempted to remove the associated challenge of the stability of nanofluids via various approaches, such as functionalization and adding a surfactant. After preparing a stable nanofluid, one must measure the properties, as this is vital in the design of thermal systems. Objective: Authors aimed to investigate the stability and viscosity of refrigeration lubrication oilbased nanofluids containing functionalized MWCNTs. The effects of concentration and temperature on viscosity were studied. Furthermore, the present study focused on the effect of sonication time on the stability and viscosity of the prepared samples. Methods: After the preparation of chemically functionalized MWCNTs, solutions were dispersed with an ultrasonic homogenizer for 2, 4 and 8 hours sonication at maximum power. Viscosity measurements for all samples were made 10 minutes after sonication by adjusting the proper spinning velocity using a digital rotary viscometer. Results: The first part deals with the stability of the nanofluid as a nanolubricant, and the second one investigates the viscosity of the nanofluid and the effects of various parameters on it. The last one is related to the validation of the measured viscosity values by means of well-known empirical correlations. The measured data are given for validation issues. Conclusion: The samples will have higher stability by increasing the time of sonication. The viscosity of a nanofluid does not change with the increase of sonication time to two hours and higher. Up to mass concentration of 0.1%, the effective viscosity increases with adding nanotubes linearly.

Sign in / Sign up

Export Citation Format

Share Document