Formation,structural and optical properties of tellurium oxide films deposited by a plasma process (PARBAD)

Tellurium oxide films have been formed by reactively evaporating tellurium in an r.f. discharge plasma of oxygen. Bias variation has been found to reveal interesting structural changes and different optical properties for the films formed. Qualitative observations regarding the physical and chemical reactions at the substrate have been reported.     

Synthesis,characterization, and fiber studies of certain aromatic polyamides

Three aromatic polyamides containing alkyl and ether linkages in the main chain were synthesized, using low-temperature solution and interfacial polycondensation procedures, and were characterized by viscosity, solubility, UV, IR, TGA, and DSC studies. Fibers were spun using a laboratory-scale wet spinning unit and their mechanical and morphological properties studied. The results were correlated with structure and spinning conditions.     

Evaporation characteristics of TeO2 in the formation of tellurium oxide thin films

Thin films of tellurium oxide have been formed by evaporating TeO₂ with different boat materials (molybdenum and tantalum) in a high vacuum and at different oxygen partial pressures. The optical and structural properties of the films have been studied. From the variations in the properties with respect to the formation conditions the evaporation characteristics of TeO₂ have been discussed.     

Trilateral Spearman Katz Centrality Based Least Angle Regression for Influential Node Tracing in Social Network

Wireless Personal Communications - With the epidemic growth of Online Social Networks (OSNs), a large scale research on information dissemination in OSNs has been made an appearance in contemporary...     

CB-Fake: A multimodal deep learning framework for automatic fake news detection using capsule neural network and BERT

Multimedia Tools and Applications - The progressive growth of today’s digital world has made news spread exponentially faster on social media platforms like Twitter, Facebook, and Weibo....     

A conformational rationale for the origin of the mechanism of nucleicacid-directed protein synthesis of 'living' organisms

The physical basis for the natural evolution of a primitive decoding system is presented using the concepts of molecular interactions. Oligoribonucleotides of five residues having U at the 5'-end, a purine at the 3'-end and any combination of three bases in the middle is taken as a primitive tRNA (PIT). From conformational considerations PIT is expected to have U-turn conformation wherein, N3-H3 of base U hydrogen-bonds with phosphate, three residues ahead leaving triplet bases called primitive anticodons (PAC) into a helical conformation, and this creates a cleft between U and PAC. An amino acid can be comfortably nestled into the cleft with the amide hydrogens and carboxyl oxygen hydrogen-bonded to the last purine and the first uridine, while the side-chain can interact with the cleft side of PAC. The other side of PAC is free to base-pair with triplet codons on a longer RNA. Also two PACs can 'recognize' consecutive triplet codons, and this leads to a dynamic interaction in which the amino and carboxyl ends are brought into proximity, making the formation of peptide bond feasible. The cleft formed by different anticodon triplets, broadly speaking, shows preferences for the corresponding amino acids of the presently known codon assignment. Thus the nucleicacid-directed protein synthesis, which is a unique feature of all 'living' organisms is shown to be a natural consequence of a particular way of favourable interaction between nucleic acids and amino acids, and our model provides the missing link between the chemical evolution of small organic molecules and biological evolution through the process of mutations in nucleicacids and nucleicacid-directed protein synthesis.     

Effect of Post Weld Heat Treatment on Strength and Microstructure of Friction Stir Welded Lap Joints of AA2014-T6 Aluminum Alloy

Metal Science and Heat Treatment - Lap joints of AA2014 aluminum alloy produced by friction stir welding and subjected to post weld heat treatment have been studied. The shear strength and hardness...     

Graph-theoretical Characterization of Fullerene Cages

Abstract

Graph-theoretical characterizations of fullerene cages C_n [n = 20–90] based on the characteristic polynomials of these cages are outlined. It is shown that in general at least the first eleven non-zero coefficients in the characteristic polynomials are needed to distinguish carbon cages up to C₉₀. We did not find any isospectral fullerene cages up to C₉₀.