Results 241 to 250 of about 56,756 (306)

The selective flotation of chalcopyrite against galena using alginate as a depressant

Minerals Engineering, 2019
In this paper, sodium alginate was put forward as a flotation depressant for selectively separating the chalcopyrite from galena. The effects of the sodium alginate on the flotation performance of chalcopyrite and galena were studied using ammonium ...
Xianzhong Bu, Sha Deng, Wei Chen
exaly   +2 more sources

Investigation of the specularite/chlorite separation using chitosan as a novel depressant by direct flotation.

Carbohydrate Polymers, 2020
Chlorite is one of the representative iron-bearing silicates gangue minerals existed in the specularite ores which the traditional depressants are incapable of action in specularite/chlorite separation flotation.
Mingyang Li, Jun Liu, Yiming Hu, Xiangpeng Gao, Qidong Yuan, Fugang Zhao   +5 more
semanticscholar   +1 more source

The utilization of citric acid as a depressant for the flotation separation of barite from fluorite

Minerals Engineering, 2020
To achieve the efficient flotation separation of barite from fluorite, citric acid (CA) was utilized as a depressant for fluorite in this study. Microflotation showed that both fluorite and barite had good floatability when using sodium oleate (NaOl) as ...
Ling Xia, Siyuan Yang, Weng Fu
exaly   +2 more sources

Depression

Child and Adolescent Psychiatric Clinics of North America, 2012
This article reviews the assessment and treatment for depression in children and adolescents, emphasizing the implementation of evidence-based treatments into clinical care. Past trials of antidepressant medications are reviewed, as well as the clinical use of antidepressants and pharmacologic strategies for refractory illness or in the context of ...
Christine J, Choe, Graham J, Emslie, Taryn L, Mayes   +2 more
openaire   +2 more sources

Flotation separation of fluorite from calcite by using psyllium seed gum as depressant

Minerals Engineering, 2020
Separating fluorite and calcite through flotation is difficult due to their similar Ca2+ sites on the adsorption surface of collectors. Psyllium seed gum, a reagent naturally derived from psyllium seed, was used for the first time as an efficient ...
Hepeng Zhou, Yongbing Zhang, Xuekun Tang, Yijun Cao, Xianping Luo   +4 more
semanticscholar   +1 more source

Is Poststroke Depression a Major Depression?

Cerebrovascular Diseases, 2013
<b><i>Background:</i></b> Poststroke depression (PSD) is the most common neuropsychiatric consequence of stroke. A large number of studies have focused on the pathogenesis of PSD, but only a few aimed to characterize its psychopathology; these studies yielded results that are difficult to compare because of the different methods
Carlos E, da Rocha e Silva, Marco A, Alves Brasil, Emilia, Matos do Nascimento, Basilio, de Bragança Pereira, Charles, André   +4 more
openaire   +2 more sources

Selective adsorption of a new depressant Na2ATP on dolomite: Implications for effective separation of magnesite from dolomite via froth flotation

, 2020
Up to now, there is still a great challenge to efficiently separate magnesite from calcium-bearing carbonate minerals, especially dolomite, via froth flotation owing to their similar physicochemical properties.
Bin Yang, Sun Haoran, Donghui Wang, W. Yin, Shaohang Cao, Yu-lian Wang, Zhanglei Zhu, Kai Jiang, Jin Yao   +8 more
semanticscholar   +1 more source

Selective flotation of scheelite from calcite using xanthan gum as depressant

Minerals Engineering, 2019
Xanthan gum (XG), a clean, non-toxic macromolecular polysaccharide, was studied as a depressant in the flotation separation of scheelite from calcite.
Liuyang Dong, Fen Jiao, W. Qin, Wei Liu
semanticscholar   +1 more source

Exploration of a novel depressant polyepoxysuccinic acid for the flotation separation of pentlandite from lizardite slimes

, 2020
Lizardite is representative of a group of serpentine minerals that coexists with nickel sulfide minerals, and the lizardite slime coating that easily forms on surfaces during mineral processing, making it difficult for beneficiation.
Cheng Liu, Yunfei Zheng, Siyuan Yang, Weng Fu, Xin Chen   +4 more
semanticscholar   +1 more source

Depressed Children of Depressed Parents

The Canadian Journal of Psychiatry, 1985
Fifty children whose parents had a diagnosis of affective disorder were given a stuctured diagnostic interview by a child psychiatrist. The parents were also interviewed about their children. Fourteen per cent of the children were found to be depressed.
J H, Kashani, J P, Burk, J C, Reid
openaire   +2 more sources