Modality and intermittent search strategy in combination with an Improve Particle Swarm Optimization algorithm (IPSO) to detect damage structure via using vibration analysis basic principle of a decline stiffness matrix is presented the study as new technique. Unlike optimization problem simplistic application, leads promising results. Interestingly, PSO solves optimal around location determine...

The dearomatising dihydroxylation of aromatic molecules mediated by arene dioxygenase enzymes can provide cyclohexadiene-diols that are versatile starting materials for organic synthesis. Whereas oxidation of a substituted arene to give its ortho,meta-dihydrodiol has been demonstrated for numerous substrates and dioxygenases, formation of ipso,ortho-dihydrodiols has historically been underutili...

[reaction: see text] A new iterative synthesis of regioregular oligothiophenes has been developed in which "double-coupling" after each iteration minimizes deletion sequences. The method exploits the susceptibility of alpha-silyl- but not alpha-germyl-substituted thiophene derivatives toward nucleophilic ipso-protodemetalation and features an unusual "base-free" Suzuki-type cross-coupling proto...

The crystal and mol-ecular structures of two di-phenyl-tin bis-(di-thio-carbamate)s, [Sn(C6H5)2(C5H10NOS2)2], (I), and [Sn(C6H5)2(C7H14NO2S2)2], (II), are described. In (I), in which the metal atom lies on a twofold rotation axis, the di-thio-carbamate ligand coordinates with approximately equal Sn-S bond lengths and the ipso-C atoms of the Sn-bound phenyl groups occupy cis-positions in the res...

Prayer and verbally answered prayer would seem to offer powerful evidence in relation to the question of human agency. Forty members of an English Pentecostal group completed a questionnaire on prayer: 25 reported an answering voice from God, 15 of them hearing Him aloud. The latter groups were interviewed and characteristics of phenomenology and context elicited. The voice of God cannot be hel...

Owing to climate change, industrial pollution, and population gathering, the air quality status in many places China is not optimal. The continuous deterioration of air-quality conditions has considerably affected economic development health China’s people. However, diversity complexity factors which affect pollution render monitoring data complex nonlinear. To improve accuracy prediction index...

A green and efficient protocol for ipso-hydroxylation of arylboronic acids has been developed using WEPBA (water extract papaya bark ash) as neat reaction media. The present media provides a clean strategy to get phenols in excellent yields.