Isolating the Contributions from Moments of Inertia in Isotopic Shifts Measured by High-Resolution Cyclic Ion Mobility Separations.

The unexpected finding that isotopomers (i.e., isotopic isomers) can be separated with high-resolution ion mobility spectrometry-mass spectrometry (IMS-MS) has raised new structural considerations affecting an ion's mobility, namely its center of mass (CoM) and moments of inertia (MoI).

Truchet-tile structure of a topologically aperiodic metal-organic framework.

When tiles decorated to lower their symmetry are joined together, they can form aperiodic and labyrinthine patterns. Such Truchet tilings offer an efficient mechanism of visual data storage related to that used in barcodes and QR codes. We show that the crystalline metal-organic framework [OZn][1,3-benzenedicarboxylate] (TRUMOF-1) is an atomic-scale realization of a complex three-dimensional Truchet tiling.

Two-step spin crossover by guest-disorder induced local symmetry breaking within a 3D Hofmann-like framework.

A 3D Hofmann-like metal-organic framework has been prepared which contains a 2,1,3-benzothiadiazole-based pillaring ligand. Encapsulation of a polycyclic aromatic hydrocarbon, chrysene, within the pore structure leads to a new pathway to multi-step spin crossover behaviour in which the observed two-step spin transition arises due to the presence of multiple site environments associated with local guest positional effects within the host lattice.

Phenotypic and genotypic antimicrobial susceptibility patterns of the emerging human respiratory pathogen Mycoplasma amphoriforme isolated from the UK and Denmark.

Objectives: To determine the phenotypic and genotypic antibiotic susceptibility of Mycoplasma amphoriforme isolates recovered from patients in the UK and Denmark.

Methods: Seven isolates of M. amphoriforme were examined for antimicrobial susceptibility to seven antibiotics using the microbroth dilution assay in line with the CLSI guidelines for mycoplasmas.

Identification of contaminating mollicutes in mammalian cell culture as spiroplasma species.

Cell cultures have provided an ideal habitat for a wide variety of Mycoplasma and Acholeplasma species since the earliest days of in-vitro culture. The possibility of contamination with Spiroplasma species was addressed by Regulatory Authorities due to the increased commercial use of insect cells, recognising that Spiroplasmas have been isolated from many types of arthropod and also that insect cell cultures support Spiroplasma growth as they have been used for cultivation of fastidious species. In this study we re-examined two cell culture samples previously confirmed as contaminated with mollicutes by cultural methods.