Synthesizing azoles from ortho-substituted anilines, CO2 and H2 has proved difficult due to the low nucleophilicity of which hinders their N-formylation, i.e., first step reaction. Herein, we demonstrate that R3SnX Lewis acids (LA), N-methylmorpholine (NMM) or DBU polyethyleneimine (PEI) N-formylmorpholine efficiently catalyse synthesis benzimidazole other by reductive coupling nucleophilic ami...

The aim of this study was to comparatively evaluate the intrusive forces and buccolingual torquing moments generated during anterior maxillary intrusion using different maxillary incisor intrusion mechanics. Five wire specimens were used for each of the following intrusive arches: blue Elgiloy utility arch 0.016 x 0.016 inch, TMA utility arch 0.017 x 0.025 inch, Burstone TMA intrusion arch 0.01...

Stimulation with rhythmic light flicker (photic driving) plays an important role in the diagnosis of schizophrenia, mood disorder, migraine, and epilepsy. In particular, the adjustment of spontaneous brain rhythms to the stimulus frequency (entrainment) is used to assess the functional flexibility of the brain. We aim to gain deeper understanding of the mechanisms underlying this technique and ...

The purpose of this investigation was to analyse the influence of geometric and material parameters of a human canine on initial tooth mobility, and the stress and strain profiles in the periodontal ligament. While the material parameters of tooth and bony structures are known within an uncertain limit of approximately a factor of 10, values reported for the elasticity parameters of the periodo...

A structural search leads to the prediction of a novel alkaline earth nitride BeN 4 containing square planar N 2− ring. This compound has particular chemical bonding pattern giving it potential as high-energy-density material. The P4/ nmm phase may be stable under ambient conditions, with bandgap 3.72 eV. It is predicted have high thermodynamic and kinetic stability due transfer outer-shell s e...

Recently discovered heavy fermion CeRh$_{2}$As$_{2}$ compound crystallizes in the nonsymmorphic $P4/nmm$ symmetry, which enables occurrence of topological protection. Experimental results show that this material exhibits unusual behavior, is manifested by appearance two superconducting phases. In work, we uncover and discuss a role Rh$_{2}$As$_{2}$ layers their impact on electronic dynamical pr...

The paper describes the principle of measuring linear dimensions using a nano-measuring machine (NMM), which implements method three coordinate axes in range 25X25X5 mm 3 . Sources non-excluded systematic measurement errors are identified, conventionally divided into factors associated with length an interferometer and determined by design technological features machine. Statistical estimates r...

Employee productivity of PT. NengmeyPratama Malut Maluku (NMM) Ternate Branch in carrying out work is decreasing (low), this due to the lack employee knowledge about occupational safety and health inadequate facilities environment. The purpose paper examine employees at same time provide solutions for improvement. method used quantitative analysis form theoretical studies expert opinions maximu...

This paper addresses the issue of trap design for sensor-less automated assembly. First, we present a simple algorithm that determines in O(nmm(nm) log(nm)) time whether an n-sided polygonal part will fall through an m-sided polygonal trap. We then introduce the notion of a minimal trap for a polygonal part, and develop an O(n 4+") algorithm that designs a family of minimal feeders built from t...