The Application of MALDI-TOF MS for a Variability Study of .

In recent decades, the significant deterioration of the health status of honey bees has been observed throughout the world. One of the most severe factors affecting the health of bee colonies worldwide is American foulbrood disease. This devastating disease, with no known cure, is caused by the Gram-positive spore-forming bacteria of species.

Lattice dynamics in CePdAl and LaPdAl.

The interaction between phonons and 4f electrons, which is forming a new quantum state (quasi-bound state) beyond Born-Oppenheimer approximation, is very prominent and lattice dynamics plays here a key role. There is only a small number of compounds in which the experimental observation suggest such a scenario. One of these compounds is CePdAl.

CePtAl: Structural and Bulk Properties.

This work is focused on the structural and physical properties of CePtAl, an intermetallic compound. At room temperature, the modulated orthorhombic structure (00)000, with = (0.481, 0, 0) has been determined by single-crystal X-ray diffraction supplemented by dependence of lattice parameters above room temperature for which the X-ray powder diffraction was used.

Ab initio calculations of the crystal field and phonon dispersions in CePdAl and LaPdAl.

CePdAl crystallizes in the CaBeGe-type tetragonal structure (P4/nmm, 129) and undergoes a phase transition to the orthorhombic Cmme structure at around 13 K. Its inelastic neutron spectra reveal an additional magnetic excitation that was ascribed to electron-phonon interaction leading to a formation of a new quantum quasi-bound vibron state. We present the first-principles calculations of the crystal field excitations and lattice dynamics calculations of the phonon dispersions to compare with the experimental data.

Local atomic arrangement in LaCuAl and LaAuAl by NMR and density functional theory.

CeCuAl and CeAuAl, crystallizing in the non-centrosymmetric BaNiSn tetragonal structure, are known mainly for their unusual neutron scattering spectra involving additional excitations ascribed to vibron quasi-bound quantum state in CeCuAl and anti-crossing of phonon and crystal field excitations in CeAuAl. In this work, we present results of nuclear magnetic resonance (NMR) experiments on their lanthanum analogues-[Formula: see text] and [Formula: see text]. The character of NMR spectra of [Formula: see text], [Formula: see text], and Cu measured in [Formula: see text] and [Formula: see text] is dominated by electric quadrupole interaction.