This paper studies the influence of two pH modifiers, namely sodium hydroxide (NaOH) and sodium carbonate (Na2C03), on the flotation of celestite ore using sodium oleate as the collector and sodium silicate (Na2SiO 3) as the depressant. The use of Na2CO 3 provides the best results for the concentration of celestite, under the same experimental conditions. © 1998 Elsevier Science Ltd. All rights...

The depressant effect of 5-chloro-4-(2-imidazolin-2-yl-amino)-2,1,3-benzothiodiazole (DS103-282) on the polysynaptic excitation of interneurones in the cat spinal cord appears to be related to a postsynaptic reduction in the effectiveness of excitatory transmitters than to interference with their presynaptic release.

Sixty-seven patients with the irritable colon syndrome are reported. The symptom complex is considered to be a concomitant of an affective disorder, and the psychological factors associated with the genesis of the illness are discussed. Fifty-six patients received treatment with anti-depressant therapy, of whom 80% reported significant improvement.

Objective: Melatonin (Mel) is a hormone with anti-depressant and anti-oxidant features. It well known that melatonin protects brain cells from reactive oxygen species the brain's high consumption lipid content make it particularly vulnerable to oxidative stress caused by prolonged stress. This study aims investigate effects of melatonin, fluoxetine their combinations on emotional memory, depres...

Shade dried, powdered seeds of Sterculia guttata were extracted using a Soxhlet extractor with ethanol. Ethanol was removed under reduced pressure and dried to obtained crude extract. This extract was evaluated for its effect on behavioral changes, exploratory activity and barbiturate-sleeping time, using appropriate standard methods in mice. The extract exhibited dose-dependent CNS depressant ...

A clinical trial using the anti-depressant nomifensine in Parkinsonism is reported. Eighteen subjects not receiving levodopa participated. The drug had a small, but significant anti-Parkinsonian effect. No troublesome side effects were encountered. In the treatment of Parkinsonism, nomifensine may be considered as an alternative to amantadine or anticholinergics, especially where depression is ...

Malathion is an organophosphate widely used as an insecticide in agriculture and in public health programs, causing risk to human health. As was recently reported, malathion induces depressant-like behavior and oxidative damage to the brain of rodents. Given the relevance of searching for neuroprotective agents against such damage, this study was therefore undertaken to investigate the neuropro...

Background: Commelina diffusa Burm. (Family: Commelinaceae) is usually known as “climbing dayflower or spreading dayflower” in Bangladesh. The plant is used in fever, malaria, insect, bug bites, rheumatoid arthritis, gonorrhea, influenza, and bladder infection etc. The present investigation was undertaken which deals with the evaluation of central nervous system (CNS) depressant activity of met...

A gastric secretory depressant ;gastrone' has been previously found in normal gastric juice. These studies show that it is present in the neutralized gastric juice and is not destroyed by peptic digestion in one hour, indicating that this factor is not a protein and would be consistent with the view that it is related to the mucopolysaccharides in gastric juice.

part, for the relatively benign outcome. Although intravenous treatment of seizures is considered to be associated with morbidity and mortality in older people because of hypotensive, cardiac depressant and sedative effects of antiepileptic drugs, our experience suggests that, with the appropriate indications and when taking the proper precautions, such therapy is well tolerated in elderly pati...