The traditional hematite depressant starch has the disadvantages of poor solubility and high viscosity. In this study, a novel depressant, pullulan, with better performance flotation effect than was found. structure, molecular weight viscosity pullulan were determined for its characterization. results tests revealed that separation hematite-quartz by hematite-quartz. selective depression mechan...

objectives: the study was carried out to assess the analgesic, anti-inflammatory, and cns depressant activity of the methanolic extract of  the lawsonia inermis barks(melib). materials and methods: anti-inflammatory effects of mebli were studied using carrageenan-induced inflammatory method at the dose of 300 and 500 mg/kg b.wt., p.o. analgesic activity was measured using acetic acid-induced wr...

The oxygen uptake of bovine endometrium was less when perfused with seminal plasma than when perfused with Krebs-Ringer phosphate buffer solution. Dialysing the seminal plasma against Krebs\x=req-\ Ringer phosphate buffer solution did not alter the depressant action of the seminal plasma. The depressant substance was shown to be partially heat labile. Variable mineral concentrations were not re...

The depressant action of antidromic volleys of impulses on gustatory nerve signals from the tongues of bullfrogs was studied. Electrical stimulation of the glossopharyngeal nerve at a rate of 100 Hz for 10 s and at supramaximal intensity slightly depressed the integrated glossopharyngeal nerve responses to quinine and to mechanical taps to the tongue . The same antidromic stimuli resulted in a ...

AIMS To examine changes in the prescribing of anti-depressants in New Zealand from 1993-1997, in terms of expenditure, the number of dispensings and days of therapy supplied. METHOD Data on subsidised dispensings of anti-depressant drugs during 1993 to 1997 were obtained from PHARMAC and analysed using SAS. RESULTS The overall size of the anti-depressant market increased considerably over t...

The ethanolic leaf extract of Cymbidium aloifolium (L.) was intended to evaluate the effect on the central nervous system (CNS) using a number of neuropharmacological experimental models in mice. The extract, at the dose of 200 and 400 mg/kg body weight, were shown to have CNS depressant activity by the reduction of locomotor and exploratory activities in the open field and hole cross tests. Th...

In the present study, microflotation experiments were performed on pure minerals systems involving hematite and quartz in presence of etherdiamine as collector. The influence polyacrylamides co-depressant was investigated a blend with starch depressant. results obtained demonstrated that all used efficient depression, at different levels following order effectiveness: cationic > non-ionic anion...