A Pseudomonas sp. rapidly metabolized several nonchlorinated analogues of DDT, with the exception of 2,2-diphenylethanol, as the sole carbon source. Several of the mono-p-chloro-substituted diphenyl analogues were also metabolized as the sole carbon source by the bacterium. The resulting chlorinated aromatic acid metabolites were not further metabolized. The isolate was unable to metabolize p,p...

The structures of the compounds 1,2-bis(diphenylphosphino)benzene, C(30)H(24)P(2), [2-(diphenylphosphino)phenyl]methyldiphenylphosphonium iodide, C(31)H(27)P(2)(+).I(-), and [2-(dimethylphosphino)phenyl]trimethylphosphonium iodide, C(11)H(19)P(2)(+).I(-), show that quaternization only occurs at one P centre and results in significantly shorter P-C bonds and larger C-P-C angles, consistent with ...

The S → N acylation rates of thioester functionalized coumarins on heptakis-[6-deoxy-6-(2-aminoethylsulfanyl)]-β-cyclodextrin were measured. A high yield of mono-acylation was achieved with products that form self-inclusion compounds. The differential fluorescence response of the functionalized cyclodextrins upon binding biomacromolecules shows the potential of the constructs as probes.

New carborane anions carrying one or three triflyloxy substituents are described. The mono-triflyloxy substituted carborane can be halogenated to give pentabromo and decachloro derivatives with preservation of the B-OTf linkage. The use of [HCB11Cl10OTf](-) as a weakly coordinating anion is demonstrated.

Tiling is a crucial program transformation with many benefits: it improves locality, exposes parallelism, allows for adjusting the ops-to-bytes balance of codes, and can be applied at multiple levels. Allowing tile sizes to be symbolic parameters at compile time has many benefits, including efficient autotuning, and run-time adaptability to system variations. For polyhedral programs, parametric...

Multiphoton microscopy has been shown to be a useful tool in studying drug distribution in biological tissues. In addition, fluorescence lifetime imaging provides information about the structure and dynamics of fluorophores based on their fluorescence lifetimes. Fluorescein, a commonly used fluorescent probe, is metabolized within liver cells to fluorescein mono-glucuronide, which is also fluor...

The study reports the first assessment for the quantification and speciation of butyltins (BTs) in surface marine sediment samples (0-5 cm) from intertidal mudflats of Sundarban mangrove wetland along with the Hugli (Ganges) river basin, eastern coastal part of India. Concentrations of tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) were monitored at 16 stations and present at all st...

The fluorinated dendritic chiral mono-N-tosylated 1,2-diphenylethlenediamine, FTsDPEN, has been synthesized and applied in the ruthenium(ii) complex-catalyzed asymmetric transfer hydrogenation of prochiral ketones in aqueous media.

Regioselective nucleophilic addition of electron rich aromatics to the beta-position of acetal carbon of p-benzoquinone mono O,S-acetal was achieved by modifying the acetal moiety.

OBJECTIVES The purpose of this study was to evaluate flexural strengths, moduli, and maximum deflection of Clearfil AP-X (APX) and Ceram-X Mono (CXM) when cured with a quartz-tungsten halogen (QTH) or an LED-light (LED). METHODS Specimens were made according to ISO 4049 and cured with QTH or LED for 10, 20 or 60s. Flexural strength, modulus, and deflection were determined after 24 h water sto...