Thermal Conductivity of Polymer Composite Material Based on Phenol-Formaldehyde Resin and Boron Nitride

Russian Physics Journal - The paper presents the results of studies of thermal conductivity, structure, and physico-chemical properties of samples of polymer composite material based on...     

An Efficient Labelling Approach to Harness Backbone and Side‐Chain Protons in 1H‐Detected Solid‐State NMR Spectroscopy

¹H‐detection can greatly improve spectral sensitivity in biological solid‐state NMR (ssNMR), thus allowing the study of larger and more complex proteins. However, the general requirement to perdeuterate proteins critically curtails the potential of ¹H‐detection by the loss of aliphatic side‐chain protons, which are important probes for protein structure and function. Introduced herein is a labelling scheme for ¹H‐detected ssNMR, and it gives high quality spectra for both side‐chain and backbone protons, and allows quantitative assignments and aids in probing interresidual contacts. Excellent ¹H resolution in membrane proteins is obtained, the topology and dynamics of an ion channel were studied. This labelling scheme will open new avenues for the study of challenging proteins by ssNMR.     

Comparison of stabilization modes of a symmetrical third-order non-linear oscillatory unit

The possibility of constructing symmetrical stabilized oscillator models that operate in several phases instead of operating in two phases, as is more usual, is considered in the present paper. In particular, symmetrical oscillator models operating in three phases are discussed comprehensively. An interesting feature of their dynamic behaviour, e.g. the appearance of limit cycles which are regionally stable and not orbitally stable, as is the case in the two phase counterpart, is suggested and dealt with.     

The Pauli Exclusion Principle and the Problems of its Theoretical Substantiation1

Russian Physics Journal - The modern state of the Pauli Exclusion Principle (PEP) is discussed. PEP can be considered from two viewpoints. On the one hand, it asserts that particles with...     

Auto-Bäcklund transformations and solitary wave solutions for the nonlinear evolution equation

In the present work, according to the concept of extended homogeneous balance method and with help of Maple, we get auto-Bäcklund transformations for a (2 + 1)-dimensional nonlinear evolution equation. Subsequently, by using these auto-Bäcklund transformation, exact explicit solutions of this equation are obtained.