Continuous flotation-purification and degassing of precipitation liquor in mechanical type apparatus

1976 ◽  
Vol 7 (4) ◽  
pp. 436-438
Author(s):  
A. K. Stavtsov ◽  
S. D. Fridman
Keyword(s):  
Precipitation Liquor ◽  
Type Apparatus

scholarly journals Misidentification of Tansy, Tanacetum Macrophyllum, as Yarrow, Achillea Grandifolia: A Health Risk or Benefit?

2010 ◽  
Vol 5 (1) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Niko S. Radulović ◽  
Polina D. Blagojević ◽  
Danielle Skropeta ◽  
Aleksandra R. Zarubica ◽  
Bojan K. Zlatković ◽  
...  
Keyword(s):  
Health Risk ◽  
Essential Oils ◽  
Pharmacological Action ◽  
Local Market ◽  
Potential Health ◽  
Potential Health Risk ◽  
Volatile Metabolite ◽  
Metabolite Profiles ◽  
Volatile Profiles ◽  
Type Apparatus

Tansy, Tanacetum macrophyllum (Waldst. & Kit.) Sch. Bip., is often misidentified by herb collectors as yarrow, Achillea grandifolia Friv. With the former, cases of poisoning induced by its ingestion are well documented, but the latter is widely used for ethnopharmacological purposes. The aim of this study was to estimate, based on the volatile metabolite profiles of the two species, the potential health risk connected with their misidentification. GC and GC-MS analysis of the essential oils hydrodistilled using a Clevenger-type apparatus from A. grandifolia, T. macrophyllum, and two plant samples (reputedly of A. grandifolia, but in fact mixtures of A. grandifolia and T. macrophyllum) obtained from a local market, resulted in the identification of 215 different compounds. The main constituents of A. grandifolia oil were ascaridole (15.5%), α-thujone (7.5%), camphor (15.6%), borneol (5.2%) and (Z)-jasmone (6.4%), and of T. macrophyllum oil, 1,8-cineole (8.6%), camphor (6.4%), borneol (9.1%), isobornyl acetate (9.5%), copaborneol (4.2%) and γ-eudesmol (6.2%). The compositions of the oils extracted from the samples obtained from the market were intermediate to those of A. grandifolia and T. macrophyllum. Significant differences in the corresponding volatile profiles and the literature data concerning the known activities of the pure constituents of the oils, suggested that the pharmacological action of the investigated species (or their unintentional mixtures) would be notably different. It seems, however, that misidentification of T. macrophyllum as A. grandifolia does not represent a health risk and that the absence of the toxic α-thujone from T. macrophyllum oil may in fact be regarded as a benefit.

Volunteering as Group Spokesman as a Function of Task Effectiveness, Leader Success, and Task Similarity

1971 ◽  
Vol 28 (3) ◽  
pp. 911-917
Author(s):  
Jack M. Wright ◽  
Morgan Worthy
Keyword(s):  
Task Success ◽  
Group Members ◽  
Task Similarity ◽  
Type Apparatus ◽  
And Task

By reversing the procedure in a Crutchfield-type apparatus, the frequency of adopting the job of spokesman for one's group was studied as a function of the following variables: effectiveness of performance on a previous task, success in influencing the behavior of other group members; and task similarity. Results for 64 male Ss indicate that persons are most willing to function as spokesmen for the group when they have been effective on an earlier task. This is especially likely when the earlier task is similar to the task on which they volunteer as spokesmen or when Ss had been unable to influence other group members' judgments on the previous task. The interpretation is advanced that some types of leadership attempts occur more readily on the basis of feeling of adequacy on the task than on feelings of acceptance as leader (i.e., successful influence).

scholarly journals To the Question of Designing Baromembrane Combined Type Apparatus

2021 ◽  
Vol 27 (3) ◽  
pp. 415-427
Author(s):  
S. I. Lazarev ◽  
O. V. Lomakina ◽  
V. E. Bulanov ◽  
I. V. Khorokhorina
Keyword(s):  
Strength Properties ◽  
Technological Parameters ◽  
Mechanical Loads ◽  
Membrane Apparatus ◽  
Strength And Stiffness ◽  
Selection Of ◽  
Toroidal Shells ◽  
Type Apparatus

The paper considers works on methods for calculating design and technological parameters, design of membrane equipment, research of technological features of membrane devices, selection of design schemes, methods for calculating strength and stiffness. A method has been developed for calculating mechanical loads and determining the thickness of plates and toroidal shells of a membrane apparatus of the combined type, which makes it possible to assess the strength properties of apparatus of this class. An example of a calculation, which makes it possible to assess the adequacy of the application of this technique to devices of the combined type, is given.

scholarly journals SYNTHESIS OF THE FORM OF KINTSIVKY LOPATY OF THE LOADING GUIDE OF SAFE LITERAL VERTICAL TYPE APPARATUS TO REDUCE NOISE LEVEL BY USING COMPUTER MODELING

2016 ◽  
Vol 0 (32) ◽  
pp. 145-153
Author(s):  
Арсеній Олексійович Барінов ◽  
Дмитро Миколайович Зінченко
Keyword(s):  
Computer Modeling ◽  
Noise Level ◽  
Type Apparatus

Effect of yaw angle misalignment on brake noise and brake time in a pad-on-disc-type apparatus with unidirectional compliance for pad support

2014 ◽  
Vol 78 ◽  
pp. 41-46 ◽  
Author(s):  
Naohiro Kado ◽  
Naoya Sato ◽  
Chiharu Tadokoro ◽  
Antonin Skarolek ◽  
Ken Nakano
Keyword(s):  
Yaw Angle ◽  
Brake Noise ◽  
Type Apparatus
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