From Hydrocarbons to Highly Functionalized Molecules in a Single Measurement: Comprehensive Analysis of Complex Gas Mixtures by Multi-Pressure Chemical Ionization Mass Spectrometry.

Chemical Ionization Mass Spectrometry (CIMS) is a well-established analytical method in atmospheric research, process monitoring, forensics, breathomics, and food science. Despite significant advancements in procedural techniques, several instrument configurations, especially operating at different ionization pressures, are typically needed to analyze the full range of compounds from nonfunctionalized parent compounds to their functionalized reaction products. For polar, functionalized compounds, very sensitive detection schemes are provided by high-pressure adduct-forming chemical ionization techniques, whereas for nonfunctionalized, nonpolar compounds, low-pressure chemical ionization techniques have consistently demonstrated superior performance.

[Experience in the use of zygomatic implants combined with traditional dental implants in the case of severe atrophy of the alveolar process of the upper jaw].

Rehabilitation of patients with adentia and severe atrophy of the alveolar process of the upper jaw is one of the most difficult tasks of modern dentistry. The article demonstrates the experience of using a combination of traditional dental and zygomatic implants to create a fixed prosthesis support on the upper jaw. The combined installation of standard and zygomatic implants is a predictable rehabilitation technique in the case of severe atrophy of the alveolar process of the upper jaw, which reduces the number of surgical stages and reduces the duration of treatment.

Atmospheric pressure thermal desorption chemical ionization mass spectrometry for ultra-sensitive explosive detection.

Illegal explosives are a threat to aviation, transport sector, critical infrastructure and generally to public safety. Their detection requires extremely sensitive instruments with efficient workflows that allow large throughput of items. In this study, we built a trace explosives detection instrument that requires minimal sample treatment and reaches ultra-low picogram level detection limits for many common explosives.