Method validation and environmental monitoring of triethanolamine ester quaternary ammonium compounds.

In this study water and sediment samples, collected from the River Nene (Northamptonshire) at several sites in the vicinity of the Great Billing sewage treatment plant (STP), were analysed for triethanolamine quaternary compounds (TEAQ, ester quats). A method was developed using liquid chromatography tandem mass spectrometry (LC/MS/MS) with a electrospray ionisation source (ESI). Ten components were determined using a characterised commercial sample of Tallow TEAQ as a standard.

Intracolonic Administration of Vancomycin in Intensive Care Unit Patients with Severe Clostridium Difficile Colitis.

Background: Clostridium difficile infection (CDI) is a major cause of antibiotic-associated diarrhea worldwide. The incidence of sepsis has been shown to be increasing due to severe or fulminant colitis. Oral vancomycin is the treatment of choice for CDI, but it is often ineffective in patients in the intensive care unit (ICU) due to poor intestinal motility.

Characterization data and kinetic studies of novel lipophilic analogues from 2,4-dichlorophenoxyacetic acid and Propanil herbicides.

This work describes the data collection of new lipophilic esters and amides herbicides, analogues to 24dichlorophenoxyacetic acid (2,4-D) and Propanil. The data include H and C NMR spectra and UV-VIS spectroscopic experiments, from the work "Novel lipophilic analogues from 2,4-D and Propanil herbicides: Biological activity and kinetic studies". The UV-VIS and H NMR spectra were employed to kinetic degradation design, and could be used to access new herbicides derivatives with better environmental properties.

Novel lipophilic analogues from 2,4-D and Propanil herbicides: Biological activity and kinetic studies.

This work describes the synthesis of new lipophilic amides and esters analogues of classical organochlorides herbicides by incorporation of long-chains from fatty acids and derivatives. The new fatty esters and amides were synthesized in 96-99% and 80-89% yields, respectively. In general, all compounds tested showed superior in vitro activity than commercial herbicides against growth L.

Utilization of floral resources by bees of the genus Frieseomelitta von Ihering (Hymenoptera: Apidae).

The present study intended to verify which factors (phylogenetic relationship or local ecological conditions) would determine how Frieseomelitta bees use floral resources. The data obtained in the literature on biocenotic studies of Apoidea visiting flowers in Brazil were analyzed, with identification and quantification of floral resources used by Frieseomelitta species in different areas. The phenogram of similarity on use of resources among Frieseomelitta species was compared to the phylogenetic hypothesis proposed for the group.

Interpretation of liver chemistries in adult donors after living donor liver transplantation.

Objectives: The safety of donors is paramount in adult living donor liver transplantation. Our goal is to compare the pattern of recovery of hepatic synthetic function and aminotransferases in healthy adult donors with and without complications.

Methods: We reviewed 47 consecutive patients undergoing right donor hepatectomy at our center.