Role of Halides in Extraction of Metals

2021 ◽  
pp. 353-387
Author(s):  
Mohammad Shamsuddin
Keyword(s):  
Extraction Of Metals

scholarly journals STUDY ON EXTRACTION OF TUNGSTEN AND MOLYBDENUM IN SYSTEMS WITH BINARY EXTRACTANTS

2019 ◽  
Vol 4 (2) ◽  
pp. 118-123
Author(s):  
Valerij Zaicev ◽  
Natalia Mokrovickaja ◽  
Irina Bochkareva
Keyword(s):  
Waste Water ◽  
Aqueous Phase ◽  
Organic Phase ◽  
Binary Extractants ◽  
Maximum Extraction ◽  
Aqueous Effluent ◽  
Binary Extractant ◽  
Efficient Extraction ◽  
Extraction Of Metals

The behavior of tungsten and molybdenum in extraction systems with binary extractants is investigated. The role of obtaining tungsten anhydride by purifying waste water from the redistribution is noted. The significance of binary extractants for the extraction of tungsten and molybdenum is underlined. Charts are presented to illustrate the quantitative dependence of the extracted substances. Salts of 4-tert.butylphenolate-, n.-caprylate-, di(2-ethylhexyl) phosphate- and di(2-ethylhexyl) were dithiophosphate trialkylbenzylammonium were used as extractants. Binary extractants have been found to provide efficient extraction and reextraction of tungsten and molybdenum. The maximum extraction of metals is observed at pH = 1–4. At pH> 8, the metals are present in the aqueous phase as mononuclear anions MoO42- and WO42-, and binary extractants are formed in the organic phase. Compared to amines and their salts, the solubility of the binary extractant in aqueous effluent redistribution decreases.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

The role of affect in feelings of obligation

2020 ◽  
Vol 43 ◽  
Author(s):  
Stefen Beeler-Duden ◽  
Meltem Yucel ◽  
Amrisha Vaish
Keyword(s):  
Positive Emotions ◽  
The Creation ◽  
Sense Of Obligation

Abstract Tomasello offers a compelling account of the emergence of humans’ sense of obligation. We suggest that more needs to be said about the role of affect in the creation of obligations. We also argue that positive emotions such as gratitude evolved to encourage individuals to fulfill cooperative obligations without the negative quality that Tomasello proposes is inherent in obligations.

Refining our understanding of the “elephant in the room”

2020 ◽  
Vol 43 ◽  
Author(s):  
Andrew Whiten
Keyword(s):  
Social Cognition ◽  
Cultural Evolution ◽  
Cognitive Abilities ◽  
Critical Factors ◽  
Technological Culture

Abstract The authors do the field of cultural evolution a service by exploring the role of non-social cognition in human cumulative technological culture, truly neglected in comparison with socio-cognitive abilities frequently assumed to be the primary drivers. Some specifics of their delineation of the critical factors are problematic, however. I highlight recent chimpanzee–human comparative findings that should help refine such analyses.

Choosing a Markov blanket

2020 ◽  
Vol 43 ◽  
Author(s):  
Thomas Parr
Keyword(s):  
Markov Blanket ◽  
Target Article ◽  
The Relationship

Abstract This commentary focuses upon the relationship between two themes in the target article: the ways in which a Markov blanket may be defined and the role of precision and salience in mediating the interactions between what is internal and external to a system. These each rest upon the different perspectives we might take while “choosing” a Markov blanket.

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