A strong synergistic solvation was observed for the mixtures of hydrogen bond donating and accepting solvent pairs. The nature interactions between two pairs investigated with different dye molecules viz. coumarin 480, 153, 4-aminophthalimide, p-nitroaniline. Coumarin 480 in differenet alcohols–CHCl3 (alcohols: MeOH, EtOH, BuOH) binary mixture shows a synergism, which is explained backdrop solvent–solvent interactions. Fluorescence quenching C480 by 1,2-phenylenediamine exhibited maximum...

his paper has demonstrated, for the first time, synthesis of yellowish-brown colored stable As(0) sol by borohydride-reduction aqueous sodium arsenite maintained at pH 7-9 under ambient condition. Scanning electron microscopic (SEM) images reveal formation spherical nanoparticles having size in range 67?2 nm. The transmission (TEM) studies show particle lie within 60?3 X-ray photoelectron spectroscopy (XPS) indicates zero oxidation state arsenic. dynamic light scattering (DLS) that average...

Short-range electron transfer (ET) in proteins is an ultrafast process on the similar time scales as local protein-solvent fluctuation, and thus two dynamics are coupled. Here we use semiquinone flavodoxin systematically characterized photoinduced redox cycle with 11 mutations of different aromatic donors (tryptophan tyrosine) residues to change properties. We observed forward backward ET a few picoseconds, strongly following stretched behavior resulting from coupling between environment...

Abstract Plants utilize a UV-B (280 to 315 nm) photoreceptor UVR8 (UV RESISTANCE LOCUS 8) sense environmental UV levels and regulate gene expression avoid harmful effects. Uniquely, uses intrinsic tryptophan for perception with homodimer structure containing 26 structural residues. However, besides 8 tryptophans at the dimer interface form two critical pyramid centers, other 18 tryptophans’ functional role is unknown. Here, using ultrafast fluorescence spectroscopy, computational methods...

Abstract A variety of electron transfer (ET) reactions in biological systems occurs at short distances and is ultrafast. Many them show behaviors that deviate from the predictions classic Marcus theory. Here, we these ultrafast ET dynamics highly depend on coupling between environmental fluctuations reactions. We introduce a dynamic factor, γ (0 ≤ 1), to describe such coupling, with 0 referring system without “frozen” environment, 1 system’s complete environment. Significantly, this...

Abstract Photoreceptors are a class of light-sensing proteins with critical biological functions. UVR8 is the only identified UV photoreceptor in plants and its dimer dissociation upon sensing activates UV-protective processes. However, mechanism still poorly understood. Here, by integrating extensive mutations, ultrafast spectroscopy, computational calculations, we find that funneled excitation energy interfacial tryptophan (Trp) pyramid center drives directional Trp-Trp charge separation...

Wireless sensor networks (WSNs) are widely used in IoT, environmental monitoring, and industrial systems, but ensuring energy efficiency, extended network lifetime, reliable communication under real-world constraints remains challenging. This work proposes a novel clustering framework that integrates kernel density estimation (KDE)-based adaptive node deployment, silhouette-optimized K-means clustering, Bayesian cluster head (CH) selection with Gaussian noise-based uncertainty modeling,...

A galvanic replacement reaction between As(0) nanoparticles and Au(III) ions has been reported for the first time. Initially stable yellow-brown were prepared by borohydride reduction of an arsenite solution. The characterization particles was discussed in a recent report. In present work these exploited to fabricate gold (AuNPs). as-obtained red colored sol showed λmax at 540 nm size AuNPs 62 ± 7 as observed from TEM analyses. It interesting note that comparable nanoparticles, which could...

The light-harvesting network from distal and peripheral to central tryptophans with transfer efficiencies determined measured energy-transfer rates.

Forecasters are finding it increasingly difficult to precisely anticipate the appearance of any weather factor due fast climate change. The goal this paper is predict monthly temperature in United States using different machine learning algorithms by performing time-series analysis. Climate model data for forecasts across were obtained. was analysed, and relationship between predictors (GCM Variables) target variable (Temperature months) examined several GIS based models such as GLR, GWR,...

Abstract Nowadays the maximum number of cars have a high level automatic safety system which help driver to maintain control car and their warn any potential danger. Car is increased by these types distinctive attributes, but they are expensive can be found only in cars. Our research paper focuses on making forward collision mitigation that work all Kinds vehicles without kind differences between them because Age, make, model or type affordable at minimum price. If two Moving same road...