Kinetics and Adsorption Model of Methylene Blue on [email protected] Nanoplate Composite

[email protected] nanoplate composite adsorbents were prepared in a simple acid precipitation method at room temperature. The [email protected] nanoplate composite adsorbents were characterized by X-ray powder diffraction, micro-Raman spectroscopy, Fourier transform infrared spectra, scanning electron microscopy and UV-vis diffuse reflectance spectroscopy. The results show that the orthorhombic-phase WO3.H2O nanoplates with dimensions of [Formula: see text][Formula: see text]nm3 were successfully composited with g-C3N4. The methylene blue dye generation activity of these adsorbents was evaluated. The kinetics and absorption model of [email protected] nanoplate composite adsorbents were further studied.

Highly crystalline anatase TiO2 nanocuboids as an efficient photocatalyst for hydrogen generation

Highly crystalline TiO2 nanocuboids have been prepared and their photocatalytic hydrogen generation activity was evaluated via water splitting.

DEVELOPMENT OF ART AND PEDAGOGICAL EDUCATION IN KAZAKHSTAN

n.The article deals with issues aimed at solving the problems of the formation of the general culture of the individual, the adaptation of the individual to life in society, to create a basis for a conscious choice and mastering the profession, specialty. It also talks about the need to bring pedagogy closer to life, modern production, the tasks of special scientific research and the creation of new teaching tools for creative disciplines. Understanding the problems of modern education is impossible without taking into account the socio-historical dynamics of the development of the educational system in Kazakhstan. The time distance forces us to look at many phenomena of spiritual culture of the past through the prism of modern tasks and requirements. It also refers to our understanding of the problem of formation of art education in the Republic of Kazakhstan. Development of artistic creativity of students is considered as one of the priority areas in pedagogy. Increased requirements for scientific-practical training of modern man entails the enhancement of the role of teachers and their responsibility for the younger generation. Activity in modern society requires a qualified specialist to apply the widest range of human abilities, development of unique individual physical and intellectual qualities. To solve the problem of forming the development of creative abilities in children and schoolchildren it is important what motivates more to creative activity. Key words: creativity, education, art, artistic work, pedagogy of creativity.

Growth of narrow-bandgap Cl-doped carbon nitride nanofibers on carbon nitride nanosheets for high-efficiency photocatalytic H2O2 generation

The Cl-CNF/CNS heterostructure can efficiently boost the photocatalytic H2O2 generation activity.

Hydroxyl-enriched highly crystalline TiO2 suspensible photocatalyst: facile synthesis and superior H2-generation activity

A facile ethanol-controlled strategy was reported to simultaneously realize the excellent suspendability and high-crystallinity of a hydroxyl-enriched TiO2 nanocrystal for efficient photocatalytic H2 generation.

Uncoupling the hydrolysis of lipid-linked oligosaccharide from the oligosaccharyl transfer reaction by point mutations in yeast oligosaccharyltransferase

Oligosaccharyltransferase (OST) is responsible for the first step in the N-linked glycosylation, transferring an oligosaccharide chain onto asparagine residues to create glycoproteins. In the absence of an acceptor asparagine, OST hydrolyzes the oligosaccharide donor, releasing free N-glycans (FNGs) into the lumen of the endoplasmic reticulum (ER). Here, we established a purification method for mutated OSTs using a high-affinity epitope tag attached to the catalytic subunit Stt3, from yeast cells co-expressing the WT OST to support growth. The purified OST protein with mutations is useful for wide-ranging biochemical experiments. We assessed the effects of mutations in the Stt3 subunit on the two enzymatic activities in vitro, as well as their effects on the N-glycan attachment and FNG content levels in yeast cells. We found that mutations in the first DXD motif increased the FNG generation activity relative to the oligosaccharyl transfer activity, both in vitro and in vivo, whereas mutations in the DK motif had the opposite effect; the decoupling of the two activities may facilitate future deconvolution of the reaction mechanism. The isolation of the mutated OSTs also enabled us to identify different enzymatic properties in OST complexes containing either the Ost3 or Ost6 subunit and to find a 15-residue peptide as a better-quality substrate than shorter peptides. This toolbox of mutants, substrates, and methods will be useful for investigations of the molecular basis and physiological roles of the OST enzymes in yeast and other organisms.