We have found that hydroxyl-rich carbon dots (C-dots) have the ability to reduce Au(3+) to form gold nanoparticles (AuNPs). Thiocyanate (SCN(-)) can be absorbed on the surface of the AuNPs due to its high affinity toward the AuNPs, which inhibits the growth of the AuNPs. Meanwhile, SCN(-) has the ability to etch the as-synthesized big AuNPs to small AuNPs, which can also cause the absorption pe...

A new, rugged, precise, accurate and fast primary method of measurement has been proposed for the determination of gold in various gold articles. Precise and accurate measurement of gold is the primary requirement for hall marking and to trade gold internationally, as billions of dollars of gold are trading world wide for the various applications. At present Fire Assay ASTM E 1335-08 is the onl...

A conventional ultrasonic bath was used to examine the feasibility of forming aqueous spherical gold nanoparticles (GNPs) under atmospheric conditions. The effects of ultrasonic energy on the size and morphology of GNPs were also investigated. Highly monodispersed spherical GNPs were successfully synthesised by sodium citrate reduction in a conventional ultrasonic bath, without an additional he...

The paper presents results of a comparative study of the vegetation-caused elevation bias of the space shuttle topographic mission data product, both Cand X-band (SRTM.C/X). The SRTM.C/X bands data were compared against a high-resolution digital terrain model. Pixel-based differences in SRTM.X minus SRTM.C were correlated with land cover (‘agriculture’, ‘house’, ‘tree’, ‘water’). Findings of th...

The place of sulphasalazine in the management of rheumatoid arthritis over prolonged periods of time has been compared and contrasted with that of sodium aurothiomalate. One hundred and forty-three patients (59 on sulphasalazine, 84 on sodium aurothiomalate) have been treated for periods of up to 42 months. Sulphasalazine is highly effective for some patients, though probably less frequently th...

A brief overview of the use of gold compounds in medicine, namely in the treatment of rheumatoid arthritis is presented, including that of the orally-administered triethylphosphinegold(I) tetraacetylatedthioglucose species, auranofin. A summary of an evaluation for anti-arthritic activity of novel phosphinegold(I) thiolate analogues containing biologically active thiols is given. This shows tha...

Ninety patients randomly allocated to receive auranofin, matching placebo, or sodium aurothiomalate have been followed up for three years. Inefficacy led to cessation of treatment in 14 patients receiving auranofin, 27 receiving placebo, and one receiving sodium aurothiomalate. Twenty seven of the patients receiving placebo were reallocated within the study and 16 continued therapy at three yea...

Tuberculosis remains a serious infectious disease with primary features of pulmonary manifestation in Korea. However, duodenal tuberculosis is rare in gastrointestinal cases of extrapulmonary tuberculosis. Here, we report a case of primary duodenal tuberculosis mistaken as a malignant tumor and diagnosed with QuantiFERON-TB GOLD (Cellestis Ltd.) in an immunocompetent male patient.

A patient with seropositive rheumatoid developed a bullous eruption localised to the jewellery areas 12 hours after a test dose of sodium aurothiomalate (Myocrisin). Investigation showed that she was allergic to nickel rather than gold. Small quantities of nickel were found in the Myocrisin solution after a short contact with a metal needle, suggesting an explanation for the reaction.

very much higher concentrations.1-4 We have also studied the distribution of gold in blood of patients with rheumatoid arthritis during treatment with sodium aurothiomalate and confirmed these results on the intersubject differences in distribution of gold. We surveyed the patients to determine factors which might affect the distribution of gold. From this survey we have identified smoking as t...