Four chemical races were detected in Pulicaria dysenterica, when sampled within Europe, on the basis of the surface flavonoids present. One race uniquely contained quercetagetin 3,7-dimethyl ether and another 6-hydroxykaempferol 3,4'-dimethyl ether. A third race was based on plants having 6-hydroxykaempferol 3,7-dimethyl ether together with quercetagetin 3,7,3'-trimethyl ether. The fourth race ...

METHYL N-PIqOPYL ETHER was first described by Chancel in 1869, but its valuable anaesthetm properties were not apprecmted unlal its inclusion in the long senes of ethers tested by Krantz and has co-workers m the United States. The clinical trials of methyl n-propyl ether fol/owing Krantz's original description of its anaesthetic properties and pharmacology m 1946 (1) showed that it might be sup...

Retentive properties of three dental cements were tested using stainless steel crowns Fitted to extracted third molar teeth. No significant difference was Found between the overall mean retentive Forces of the polycarboxylate cement and the two glass ionomer cements. Mechanical retention of the crowns was not a Factor in the overall retentive value. Few studies have investigated the retention o...

New tripodal gem-(bis-phosphonates) uranophiles were discovered by a screening method that allowed for the selection of ligands with strong uranyl-binding properties in a convenient microtiter-plate format. The method is based on competitive uranium binding by using Sulfochlorophenol S as chromogenic chelate. This dye compound was found to present high uranyl complexation properties and allowed...

In the 1980s, a pilot study conducted in Tanzania demonstrated a reduction in the need for tooth extraction after removal of soft demineralized dentin from dental cavities that were then filled with polycarboxylate cement [1]. Remarkably, only one of the twentyeight permanent teeth treated in this manner was extracted while the remainder was asymptomatic nine months after treatment [2]. This te...

This study demonstrates the spectral data for two triarylmethane dyes, malachite green (MG) and crystal violet (CV) at room temperature. Effects of micellar environment, and crown ether addition on the spectral behaviour of the dyes were studied using absorption spectroscopic method. The dye-anionic surfactant interactions in micellar media were investigated. The chosen surfactants with differe...

Abstract—Five palm oil ether monoesters utilized as novel biodiesels were synthesized and structurally identified in the paper. The investigation was made on the effect of ether species on physicochemical properties of the palm oil ether monoesters. The results showed that density, kinematic viscosity, smoke point, and solidifying point increase linearly with their –CH2 group number in certain ...