The fabrication of bulk heterojunction organic solar cells (OSCs) is primarily based on a phase demixing during solution deposition. This spontaneous process triggered when, as result decrease in the solvent concentration, interactions between donor and acceptor molecules begin to dominate. Herein, we present that interdiffusion same possible when bilayers donors acceptors are exposed vapor. Po...

This research aims to study jet downstream scour model under the influence of changes of water level. It also studies and analyzes different parameters and components of diffusion of submerged jet flow in an acceptor fluid and scour hole dimensions. To achieve the objectives, a physical model was made in proportion to the research title. With the Froude number increasing in a nozzle discharge, ...

The study of bacterial extracellular polysaccharide biosynthesis is hampered by the fact that these molecules are synthesized on membrane-resident carrier lipids. To get around this problem, a practical solution has been to synthesize soluble lipid analogs and study the biosynthetic enzymes using a soluble system. This has been done for the Bacillus subtilis teichoic acid polymerase, TagF, alth...

Conformational aspects of N-glycosylation have been investigated with a series of proline-containing peptides as molecular probes. The results demonstrate that, depending on the position of the imino acid in the peptide chain, dramatic alterations of glycosylation rates are produced, pointing to a critical contribution of the amino acids framing the 'marker sequence' triplet Asn-Xaa-Thr(Ser) on...

In this paper we used two free-metal organic dyes (dye 1 and dye 2) based on indigo and thioindigo with cyanoacrylic acid as the electron acceptor group. The proposed dyes were sensitized from naphalene as the starting material by standard reactions and characterized by different analytical techniques and UV-Visible spectroscopy after purification. Spectrophotometric measurements of the organic...

In the present study, two new organic dyes based on indigo were prepared and used as sensitizers in dye-sensitized solar cells. To this end, indoxyl was utilized as the electron donor and cyanoacrylic acid as the electron acceptor anchoring groups. These dyes together with their corresponding intermediates were purified and characterized by FTIR, 1HNMR, 13CNMR, elemental analysis and UV-Visible...

have been prepared and studied for possible incorporation into polynucleotides. Arab inosylcytosine mono-, di-, and triphosphates were synthesized by both chemical and enzymatic methods. Labeled and unlabeled arabinosylcytosine nucleotides were tested for their capacity to serve as substrates for purified polynucleotide phosphorylase, deoxyribonucleic acid-dependent ribonucleic acid polymerase,...

Density functional theory (DFT) analysis was carried out to explore the antioxidant properties of some flavonoids and fatty acids previously isolated from Psorospermum febrifugum spach. The geometry optimization chemical structures done following B3LYP method 6-311+G (d, p) basis set. DFT methods are fast reliable theoretical models used for evaluating reactivity electronic compounds. Reactivit...