De-MA.ch: A Web Database for Electron and X-ray Microanalysis to Assist Electron Microscope Lab Managers and Users.

Lab managers and users of scanning electron microscope or electron probe microanalyzer facilities aiming for qualitative or quantitative X-ray analyses require comprehensive, yet flexible documentation structures for their daily work and available reference material, with a complete X-ray data library, a repository of energy- and wavelength-dispersive spectra, and an instrument scheduling mechanism. An online multilaboratory database system available at https://de-ma.ch is presented with the primary goals of providing information on microanalytical reference materials, analytical setups, characteristic X-ray data, and for managing reservation and training requests.

Natural Wood-Based Catalytic Membrane Microreactors for Continuous Hydrogen Generation.

The development of controlled processes for continuous hydrogen generation from solid-state storage chemicals such as ammonia borane is central to integrating renewable hydrogen into a clean energy mix. However, to date, most reported platforms operate in batch mode, posing a challenge for controllable hydrogen release, catalyst reusability, and large-scale operation. To address these issues, we developed flow-through wood-based catalytic microreactors, characterized by inherent natural oriented microchannels.

Multipoint Background Analysis: Gaining Precision and Accuracy in Microprobe Trace Element Analysis.

Electron microprobe trace element analysis is a significant challenge. Due to the low net intensity of peak measurements, the accuracy and precision of such analyses relies critically on background measurements, and on the accuracy of any pertinent peak interference corrections. A linear regression between two points selected at appropriate background positions is a classical approach for electron probe microanalysis (EPMA).

High-performance liquid chromatographic assay for thiopental in human plasma. Application to pharmacokinetic studies.

A simple assay method for the measurement of thiopental by reversed-phase high-performance liquid chromatography (HPLC) with ultraviolet absorbance detection was developed. The method involved a protein precipitation with methanol. Carbamazepine was used as internal standard.

[Lactulose-neomycin combination versus placebo in the treatment of acute hepatic encephalopathy. Results of a randomized controlled trial].

Objectives: The effectiveness of the association of lactulose with neomycin in the treatment of acute hepatic encephalopathy has never been assessed. The aim of this study was to compare the effects of lactulose-neomycin combination versus placebo in acute hepatic encephalopathy.

Methods: Eighty patients with cirrhosis were randomly treated for 5 days with placebo (n = 40) or with lactulose-neomycin (n = 40).