Incubation of carboxyl-labeled fatty acids (RCi400H) with liver slices gave rise to Cl402 and labeled acetoacetic acid (1, 2). In the case of even numbered acids, much more of the radiocarbon appeared in the keto acid than was oxidized to C1402; however, the reverse situation occurred when acids of an odd number of carbons were used (2). Previously, studies made with non-labeled acids had yield...

Herein, we report a photoinitiated reversible addition-fragmentation chain transfer (RAFT) dispersion copolymerization of methyl methacrylate (MMA) and methyl methacrylic (MAA) for the preparation of highly monodisperse carboxyl-functionalized polymeric microspheres. High rates of polymerization were observed, with more than 90% particle yields being achieved within 3 h of UV irradiation. Effec...

A universal route to GQDs is developed based on "solution phase-based scissor" methods. The PL centers of the GQDs are systematically studied and are proved to be the surface state. This is related to the hybridization structure of the edge groups and the connected partial graphene core. Through experiment and analysis, we have preliminarily proved that the efficient edge groups for green emiss...

Applying a simple and selective sample preparation procedure prior to instrumental analysis is the most important and crucial step in an analytical process. Up to now, various sample preparation techniques based on solid phase extraction (SPE) systems have been developed to isolate various types of analytes from different matrices. In the method presented for preconcentration and measurement of...

Applying a simple and selective sample preparation procedure prior to instrumental analysis is the most important and crucial step in an analytical process. Up to now, various sample preparation techniques based on solid phase extraction (SPE) systems have been developed to isolate various types of analytes from different matrices. In the method presented for preconcentration and measurement of...

Abstract Herein, we report the synthesis and characterization of a novel class polymer composites based on onion-like carbons (OLCs)-silicon diimide by salt-free polycondensation reaction. The pyridine-catalyzed polymerization reaction was carried out in presence various contents (0.1, 0.5, 1, 2 wt%) carboxyl-functionalized OLCs argon atmosphere to provide with well-dispersed covalently incorpo...

Following cleaner production principles, converting spent tyres to activated carbon (AC) as a low-cost adsorbent is an extremely environmentally responsible and economically attractive prospect. This review evaluates the application of tyre carbons (STAC) in dye adsorption, heavy metal removal from wastewater, flue gas cleaning, its general performance against commercial (CAC). The relative STA...

In the title calcium levulinate complex, [Ca(C5H7O3)2(H2O)2] n , the Ca(2+) ion lies on a twofold rotation axis and is octa-coordinated by two aqua ligands and six O atoms from four symmetry-related carboxyl-ate ligands, giving a distorted square-anti-prismatic coordination stereochemistry [Ca-O bond-length range = 2.355 (1)-2.599 (1) Å]. The levulinate ligands act both in a bidentate carboxyl ...