Manganese-doped zinc sulfide binary nanostructures as binder-free electrode materials for supercapattery

Journal of Solid State Electrochemistry - Binary metal sulfide–based electrode materials with distinct nanoarchitecture, improved conductivities, and fascinating mechanical stabilities are...     

Quantum carpets: efficiently probing fractional revivals in position-dependent mass systems

Position-dependent-mass systems are of great importance in many physical situations,such as the transport of charge carriers in semiconductors with non-uniform composition and in the theory of many-body interactions in condensed matter.Here we investigate,numerically and analytically,the phenomenon of fractional revivals in such systems,which is a generic characteristic manifested by the wave-packet evolution in bounded Hamiltonian systems.Identifying the fractional revivals using specific probe...     

Nonlinear absorption properties correlated with the surface and structural changes of ultra short pulse laser irradiated CR-39

We have investigated femtosecond laser irradiation effects on the surface topography, structural changes and nonlinear absorption properties of CR-39. For this purpose, a CR-39 target was exposed in air to 25 fs, 800 nm Ti: sapphire laser radiation at fluences ranging from 0.25 J cm⁻² to 3.6 J cm⁻². The surface of irradiated CR-39 probed by an Atomic Force Microscope (AFM) exhibits the formation of several topographical structures, like bumps, explosions and nano cavities. Raman spectroscopy is performed to explore chemical and structural modification of the irradiated target. The spectroscopy reveals changes such as cross linking, bond breaking, formation of new bonds etc. in the fundamental structure of the polymer after irradiation. In order to establish a correlation between morphological and structural changes with the changes in the nonlinear absorption of the irradiated CR-39, a Z-scan technique was employed. A comparison of experimentally obtained data from Z-scan measurements with our calculations predicts the dominance of three-photon absorption in the case of pristine CR-39, whereas for irradiated targets concurrence of three- and two-photon absorption is probable. Nonlinear absorption increases with increasing laser fluences and is well correlated by surface and structural changes revealed by AFM and Raman spectroscopy.     

Effect of phase fluctuations on entanglement generation in a correlated emission laser with injected coherence

This proposal investigates the influence of the phase fluctuations on the time evolution of entanglement generation in a three-level correlated emission laser (CEL) with injected coherence. The atoms are injected in the cavity with an initial partial coherent superposition of the upper and lower levels. The corresponding phase φ is considered to be randomly distributed around some fixed phase φ₀. The fluctuations in phase φ modifies the coherence between the two corresponding atomic levels. Therefore, we observe strong influence of phase fluctuations on the entanglement generation using the injected coherence CEL system.     

Novel homo-bimetallic complexes of [N10] macrocyclic ligand modified with tetrapeptide function: Biological activities, spectral and cyclic voltammetric studies

The bimetallic complexes [M₂LCl₄] (M = Cr, Co, Ni, Cu) prepared via metal template cyclization reactions were characterized by physico-chemical and spectroscopic methods. L is a 30-membered [N₁₀] macrocycle with tetraamide functions bind metal ions through aza donors forming hexa-coordinate geometry. The perspective view and important structural parameters have been computed from the molecular model (MOPAC) method. The electrochemical studies indicate existence of quasi-reversible redox couples in solution. The metal complexes were screened (in vitro) against a few pathogenic fungi and bacteria to assess their growth inhibiting potential.     

B.-Y. Chen’s Inequality for Bi-warped Products and Its Applications in Kenmotsu manifolds

In this paper, we establish a sharp inequality for the squared norm of the second fundamental form of bi-warped product submanifolds of Kenmotsu manifolds. The equality case is also considered. We also provide a non-trivial example and some applications of derived inequality.     

Phytoconstituents from the galls of Pistacia integerrima Stewart

Phytochemical investigation of the galls of Pistacia integerrima Stewart (Pistaceaceae) yielded three new phytoconstituents characterized as n-decan-3′-ol-yl-n-eicosanoate, n-octadecan-9,11-diol-7-one and 3-oxo-9β-lanost-1,20(22)-dien-26-oic acid along with the known compound β-sitosterol. The structures of these phytoconstituents have been elucidated on the basis of spectral data analysis and chemical reactions.     

More results on Hermite-Hadamard type inequality through} $( \alpha ,m)$-preinvexity

We establish various inequalities for n-times differentiable mappings that are connected with illustrious Hermite-Hadamard integral inequality for mapping whose absolute values of derivatives are $\left( {\alpha ,m} \right)$-preinvex function. The new integral inequalities are then applied to some special means     

Determination of hydrazine by direct titration with hypobromite

Summary A simple, accurate and rapid method is described for the determination of hydrazine by direct titration with hypobromite using Bordeaux B as indicator. The procedure can also be employed for the determination of hypobromite and bromate by titration with standard hydrazine.

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Zusammenfassung Zur Bestimmung von Hydrazin wird die direkte Titration mit Hypobromitlösung und Bordeaux B als Indicator empfohlen. Das Verfahren ist einfach, rasch durchführbar und liefert genaue Ergebnisse. Es kann auch zur Bestimmung von Hypobromit und Bromat durch Titration mit Hydrazinlösung verwendet werden.