Experimental Investigation and Characterization of Friction Stir Spot-Welded Dissimilar Aluminum Copper Metallic Lap Joints.

Due to their contrasting physical properties, joining materials like copper and aluminum has always proven difficult. The disadvantages of traditional joining methods include additional weight, solidification problems, and energy waste. Friction stir spot-welding (FSSW) was utilized for joining copper and aluminum in order to get around these difficulties.

Extreme conditions reduce hatching success of green turtles (Chelonia mydas L.) at Karan Island, the major nesting site in the Arabian Gulf.

Survival in the early life stages is a major factor determining the growth and stability of wildlife populations. For sea turtles, nest location must provide favorable conditions to support embryonic development. Hatching success and incubation environment of green turtle eggs were examined in July 2019 at Karan Island, a major nesting site for the species in the Arabian Gulf.

Metal-Free N-H/C-H Carbonylation by Phenyl Isocyanate: Divergent Synthesis of Six-Membered -Heterocycles.

We disclose a method using phenyl isocyanate to synthesize carbonyl-containing -heterocycles. The metal-free novel approach for both N-H and C-H carbonylation processes was successfully refined, delivering a range of synthetically valuable derivatives of quinazoline-2,4(1,3)-dione, 2-benzo[] [1,2,4] thiadiazin-3(4)-one 1,1-dioxide, and pyrrolo[1,2-] quinoxalin-4(5)-one. The protocol features broad substrates with diverse reactions suitable for excellent yields, mild conditions, and good functional group compatibility.

Enhancing β-Carotene Concentration in Parental Lines of CO6 Maize Hybrid Through Marker-Assisted Backcross Breeding (MABB).

Vitamin A deficiency (VAD) is a global health problem; many people around the world, especially children and pregnant women, are VAD deficient or insufficient. Maize is known as an important source of provitamin A for humans. Hence, enhancement of provitamin A carotenoids (pVAC) in maize varieties through breeding or biofortification is a good option for alleviating VAD in developing countries, especially India.

Understanding the potency of fatty acids with the amino acid side chains of bovine β lactoglobulin-A quantum chemical approach.

The present study aims to spotlight on the strength of interaction between different fatty acids with the Bovine-lactoglobulin (LGB) protein side chains along with the crystal water molecules at M062X/def2-QZVP level of theory. To analyse the role of carboxylic acid and its interaction with side chains and to reveal the significance of carboxylic acid, it was replaced by Acyl chloride (COCl), Acyl Bromide (COBr) and Acyl-Fluorine (COF) group and COS group. The ligands are linear with a straight and branched chain of carbon atoms, but extended methyl group make the ligand bend resulting in non-planar geometry.

AVNb3Cl11 (A = K, Rb, Cs, Tl): a series of layered vanadium niobium halides based on triangular Nb3 clusters.

The first quaternary vanadium niobium compounds containing triangular Nb(3) clusters corresponding to the general formula, AVNb(3)Cl(11) (A = K, Rb, Cs, Tl), have been prepared in sealed quartz tubes from stoichiometric amounts of ACl (A = K, Rb, Cs), or Tl metal, VCl(3), Nb powder, and NbCl(5) heated at 740 degrees C. The compounds crystallize in the orthorhombic space group Pnma (No. 62).

Potassium yttrium hexaniobium octadecachloride, KYNb6Cl18.

The structure of potassium yttrium hexaniobium octadecachloride is built of anionic [Nb(6)Cl(12)(i)Cl(6)(a)](4-) cluster units (where 'i' and 'a' denote inner and outer ligands, respectively), linked together by K(+) and Y(3+) cations. The K(+) cations occupy half of the tetrahedral vacancies in the face-centered cubic lattice of cluster units, and are coordinated by 12 chloride ligands. The Y atom is located in an octahedral site and is bonded to six outer chloride ligands.

K(2)SrNb(6)Cl(18), dipotassium strontium hexaniobium octadecachloride.

The structure of dipotassium strontium hexaniobium octadecachloride is based on [Nb(6)Cl(i)(12)Cl(a)(6)](4-) units (i and a denote 'inner' and 'outer' ligands, respectively), which have crystallographically imposed -3 symmetry, linked together by K(+) and Sr(2+) cations. The K(+) cation occupies a tetrahedral site in the face-centered cubic lattice of cluster units, and is bonded to 12 Cl ligands. The Sr atom is located in an octahedral site and is bonded to six outer Cl ligands.