Two environmentally safe iron compounds (synthetic magnetite and ferrous gluconate) have been evaluated as sulphide scavengers at temperature conditions of 25 °C, 35 °C, 45 °C and 55 °C at pH of 12 in a sulphide-contaminated drilling mud. The ferrous complex was found to be a better scavenger than synthetic magnetite. It exhibited 100 % scavenging efficiency within the first 40 minutes of agita...

A naphthalimide-azide based colorimetric and ratiometric fluorescent probe, NAP-1, has been developed for the selective and sensitive detection of hydrogen sulphide. Advantages of the probe NAP-1 include a low detection limit (110 nM), good selectivity, high sensitivity and excellent photostability. A linear relationship between the emission intensity ratios and sulphide concentrations was obse...

During the reaction between 1,3,5-tris(2-hydroxyethyl)hexahydro-s-triazine and hydrogen sulphide, the principle by-product is the organic sulphide 5-(2-hydroxyethyl)dithiazine. It can be determined by a novel, portable, field-capable ion mobility spectrometry method described herein and enables the "degree spent" to be determined. Dependant upon the level of carbon dioxide in the produced gas, ...

Obesity and diabetes represent a significant and escalating worldwide health burden. These conditions are characterized by abnormal nutrient homeostasis. One such perturbation is altered metabolism of the sulphur-containing amino acid cysteine. Obesity is associated with elevated plasma cysteine, whereas diabetes is associated with reduced cysteine levels. One mechanism by which cysteine may ac...

The application of an electrochemical sensor, based on a glassy carbon electrode, modified with a cellulose acetate polymeric film bearing 2,6-dichlorophenolindophenol (CA/DCPI-CME), for flow injection analysis of sulphide, is described. The overall reaction was found to obey a catalytic regeneration mechanism (EC mechanism) and the electrochemical rate constant k(f) for the electrocatalytic ox...

the Mica hydroelectric dam has 3artly submerged the showings, ( ~ ~ d ~ ~ ~ , 19711, ~h~ ~l~ cambrian age is based on fossilr in Detailed mapping ofa 1 ~ ~ m e t r e w t i o n (Figures 2 -72 and 2-7-31 equivalent unmetamolphosed Strata the south of the map centred On the Prospect was ComFIcted by the senior author over a near Sullivan ~ i v e r ( ~ y l e ~ , I 960). There are no volcanic rocks ...

Introduction Acute liver failure is a fatal syndrome attributed to massive hepatocyte apoptosis that is resistant to conventional medical therapies. Consequently, liver transplantation is required in many cases. An experimental liver failure model induced by galactosamine (Gal) and lipopolysaccharide (LPS) mimics clinical acute liver failure. In this model, LPS stimulates macrophages to release...

Regional geologic mapping in 1994 extended previous 150 000-scale mapping of the Tulsequah River mapsheet (104W12; Mihalynuk et a/.. 1994a, b) eastward into the Stuhini Creek map area (104Wl1, Figure 1). Approximately 20% of the Tulsequah River and 45% of the Stuhini Creek map sheets has been previously mapped as Upper Triassic Stuhini Group (Souther, 1971'). More recently, fossil and is...

The Eskay Creek gold-silver mine, located in northwest British Columbia, is the highest-grade precious-metal volcanogenic massive sulphide deposit in the world. The mining industry continues to spend more than $2 million each year on exploration for similar deposits in the area. The geologic setting at the minesite is well studied, but large tracts in north-central British Columbia require more...