Matter in the universe has become “dark” or “missing” through misconceptions about the fluid mechanics of gravitational structure formation. The linear Jeans (1902, 1929) theory gives vast overestimates (by factors of trillions or more) for the initial condensation mass of baryonic matter, and vast underestimates (by factors of trillions or more) for the initial condensation mass of the non-bar...

Coronary artery bypass grafting (CABG) acutely disturbs the homeostatic state of the transplanted vessel making retention of graft patency dependent on chronic remodeling processes. The time course and extent to which remodeling restores vessel homeostasis will depend, in part, on the nature and magnitude of the mechanical disturbances induced upon transplantation. In this investigation, biaxia...

A new linear sweep vo ltammetric (LSV) assay of fsDNA based on its interaction with neutra l red (N R) is presented. At pH 8.0 Britton-Robinson (8-R) buffe r solutio n, the dye can bind with DNA to form a supramolec ular complex , wh ich results in the decrease of the linear sweep voltammetric reductive peak current at -0.60 V (vs. SCE) on the mercury e lec trode. The binding reaction is comple...

Methanol electrochemical oxidation in a direct methanol fuel cell (DMFC) is considered to be an efficient pathway for generating renewable energy with low pollutant emissions. NiO−CuO and Ni0.95Cr0.05O2+δ thin films were synthesized using simple dip-coating method tested the electro-oxidation of methanol. These electrocatalysts characterized by X-ray diffraction spectroscopy (XRD), photoelectro...

Studies on water electrolysis are in permanent development to improve its processes with electrodes and electrolytes that offer lower overpotential values. This work uses an ionic liquid (IL) – tetrafluoroborate of 3-triethylammonium-propane sulfonic acid (TEA-PS.BF4) as electrolyte studies the effect different electroactive cathode materials hydrogen production, such platinum (Pt), nickel (Ni)...

Spectral analysis by means of NLTE model atmospheres has presently arrived at a high level of sophistication. High-resolution spectra of central stars of planetary nebulae can be reproduced in detail from the infrared to the X-ray wavelength range. In the case of LSV+46◦21, the exciting star of Sh 2−216, we demonstrate the state-of-the-art in the determination of photospheric properties like, e...

Recent losses in honey bee colonies are unusual in their severity, geographical distribution, and, in some cases, failure to present recognized characteristics of known disease. Domesticated honey bees face numerous pests and pathogens, tempting hypotheses that colony collapses arise from exposure to new or resurgent pathogens. Here we explore the incidence and abundance of currently known hone...

Nano-structured molybdenum disulfide (MoS2) catalysts have been extensively developed for the hydrogen evolution reaction (HER). Herein, a novel hydrothermal intercalation approach is employed to fabricate nanoflower-like 2H–MoS2 with the incorporation of three polymers, polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and polyethylenimine (PEI). The as-prepared MoS2 specimens were characte...

Dans cet article, nous proposons de détecter automatiquement les symétries de variables pour les instances CSP en calculant au préalable pour chaque contrainte une partition mettant en valeur les variables dites localement symétriques. A partir de cette information qui peut être obtenue en temps polynomial, nous pouvons alors construire un graphe (appelé lsvgraphe) dont les automorphismes corre...

This work describes the fabrication, characterization, and application of a gold microband array electrode (MAE) for the determination of phosphate in fresh water samples. The working principle of this MAE is based on the reduction of a molybdophosphate complex using the linear sweep voltammetric (LSV) method. The calibration of this microsensor was performed with standard phosphate solutions p...