Results 211 to 220 of about 56,756 (306)

Differential adsorption of hydrolytic polymaleic anhydride as an eco-friendly depressant for the selective flotation of apatite from dolomite

, 2021
Differential adsorption of surfactants (e.g., collectors and depressants) on the minerals plays a key role in mineral flotation through selectively altering the surface wettability of minerals. In this study, to improve the removal efficiency of dolomite
Bin Yang   +7 more
semanticscholar   +1 more source

Flotation separation of molybdenite from chalcopyrite using rhodanine-3-acetic acid as a novel and effective depressant

Minerals Engineering, 2021
The selective separation of molybdenite from chalcopyrite is difficult because of their similar floatability in the presence of a collector. In this study, rhodanine-3-acetic acid (3-Rd) was first applied in molybdenite flotation as a novel chalcopyrite ...
Changtao Wang   +7 more
semanticscholar   +1 more source

Phase transition mechanisms of paraffin in waxy crude oil in the absence and presence of pour point depressant

Journal of Molecular Liquids, 2021
Molecular dynamics simulations were employed to reveal the phase change mechanisms of paraffin wax in a multiphase system of crude oil comprised of oil, paraffin wax, bitumen, and water.
Jincheng Cao   +3 more
semanticscholar   +1 more source

Depression

Annals of Internal Medicine, 2021
Most psychiatric care is delivered in primary care settings, where depression is the most common presenting psychiatric symptom. Given the high prevalence of depression worldwide and the well-established consequences of untreated depression, the ability of primary care clinicians to effectively diagnose and treat it is critically important.
Robert M, McCarron   +3 more
openaire   +2 more sources

The flotation separation of molybdenite from chalcopyrite using a polymer depressant and insights to its adsorption mechanism

Chemical Engineering Journal, 2020
In the present study, the poly(acrylamide-allyl thiourea) (PAM-ATU) with an average molecular weight of approximately 1.66 × 104 g/mol was introduced as the chalcopyrite depressant in the flotation separation of molybdenite and chalcopyrite.
Xingrong Zhang, Jiongtian Liu
exaly   +2 more sources

Selective adsorption of a high-performance depressant onto dolomite causing effective flotation separation of magnesite from dolomite.

Journal of Colloid and Interface Science, 2020
This research focused on the adsorption features and depression mechanism of 1-hydroxyethylene-1,1-diphosphonic acid (HEDP) used as a novel dolomite depressant on dolomite and magnesite surfaces, to extend the application of HEDP for the selective ...
Bin Yang   +7 more
semanticscholar   +1 more source

Improving flotation separation of apatite from dolomite using PAMS as a novel eco-friendly depressant

, 2020
Froth flotation is widely used as an effective method for separating apatite from dolomite. However, it is of difficulty to realize the efficient separation of apatite and dolomite using the traditional fatty acid collectors without any depressants due ...
Bin Yang   +8 more
semanticscholar   +1 more source

Flotation separation of smithsonite from calcite by using flaxseed gum as depressant

Minerals Engineering, 2021
Flotation separation of smithsonite from calcite is difficult due to the complex associated relationship between smithsonite and calcite, the surface properties are similar and calcite has good natural floatability. Flaxseed gum (FG), a natural pollution-
Hepeng Zhou   +4 more
semanticscholar   +1 more source

Depression

Continuum, 2015
Depression is a presenting symptom of common psychiatric disorders such as major depressive disorder, bipolar disorder, and schizophrenia. Depression can also be the presenting symptom of several neurodegenerative disorders, including Alzheimer disease, dementia with Lewy bodies, frontotemporal dementia, and Parkinson disease. Depression can also cause
Paul E, Schulz, Garima, Arora
openaire   +2 more sources

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