In 1941 Pangborn (1) reported the isolation of a complex phosphatidic acid from beef heart and suggested the name cardiolipin for it. The presence of this phospholipide seems to be essential for the complementbinding activity of beef heart extracts with sera of syphilitic patients. On hydrolysis (2) with ethanolic potassium hydroxide at room temperature the phosphatidic acid yielded, in additio...

Biomass derivable epichlorohydrin undergoes ring-opening copolymerization with either succinic or itaconic anhydride (both biosourcable) under standard laboratory conditions using metal-based an entirely organic initiator to form highly functionalized, low molecular weight polyesters. The linear polyesters obtained from and contain both alkyl chlorides ?,?-unsaturated esters can be crosslinked ...

In this research, the adhesive wear of a composite material consisting unsaturated polyester has been studied as matrix reinforced by glass fiber and rock wool fibers. The rate property is compared in normal condition after immersion (NaOH) (HCl) solutions at normality (0.3N) laboratory temperature (25 oC) for 30 (days) with fixed volume fraction (20%). results showed that decreased increasing ...

Using the experimental determinations obtained on basis of compressive stress, some mechanical properties were studied for composite materials with matrix three types resin, epoxy, unsaturated polyester and hybrid based Dammar natural which was reinforced isophthalic resin granules NPG (Neopentyl Glycol) Chromat Kayan / Javari Payette type. The stress-strain diagrams, yield strength, strength m...

Marine invertebrate deposit feeders secrete surfactants into their gut fluid in concentrations sufficient to induce micelle formation, enhancing solubilization of sedimentary lipids. We isolated and identified 3 related surfactant molecules from the deposit-feeding polychaete lugworm Arenicola marina. Surfactants were isolated and separated by a combination of solvent extraction and thin-layer ...

The ketimide anion R2C=N(-) is an important class of chemically robust ligand that binds strongly to metal ions and is considered ideal for supporting reactive metal fragments due to its inert spectator nature; this contrasts with R2N(-) amides that exhibit a wide range of reactivities. Here, we report the synthesis and characterization of a rare example of an actinide ketimide complex [Th(BIPM...

Abstract An alternative way for increasing the strength of runner’s prosthesis is by utilize direction fiber orientation. The aim this research to determine effect orientation carbon-glass reinforced composite on its bending strength. main materials used in study are carbon and glass fiber. independent variable (0°, 45°, 90°, 0°/90°/0° 90°/0°/90 o) . dependent variables fracture micro photograp...