Materials Literature
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Transparent plastic films are widely used in agriculture as greenhouses covering and in the food industry as packaging films. The films are usually prepared by hydrophobic low polarity thermoplastics such as polyethylene (PE). In a greenhouse, the temperature and humidity are usually higher than the outside temperatur…
All glassy epoxy polymers develop macroscopic properties at some degree of conversion. Our selected example, diglycidyl ether bisphenol‐A epoxy pre‐polymer, was cured with 3,3′‐diaminodiphenylsulfone at stoichiometric equivalents using a series of cure profiles to produce distinct variation in the degree of epoxy conv…
Basal elements in archaeal promoters, except for putative initiator elements encompassing transcription start sites, are well characterized. Here, we employed the Sulfolobus araS promoter as a model to study the function of the initiator element (Inr) in archaea. We have provided evidence for the presence of a third c…
In the kneading of glass–fiber‐reinforced plastics by twin‐screw extrusion, the use of a backward‐mixing screw (BMS) element for melt mixing has been found to be effective in dispersing glass–fiber bundles. In this study, we use computational fluid dynamics (CFD) to investigate the mechanism for the effectiveness of B…
The use of NMR-derived chemical shifts in protein structure determination and prediction has received much attention, and, as such, many methods have been developed to predict protein chemical shifts from three-dimensional (3D) coordinates. In contrast, little attention has been paid to predicting chemical shifts from…
The purpose of a concept analysis is to examine the structure and function of a concept by defining its attributes and internal structure. Concept analysis can clarify an overused or vague concept and promote mutual understanding by providing a precise operational definition. Mentoring is a concept more fully used by…
The phase equilibria and thermodynamic properties of the Mo–Re system are studied by combining first-principle and CALPHAD approach. The mixing enthalpies in the bcc and hcp solution phases are estimated by first-principle calculations using the special quasirandom structures. The liquid, bcc and hcp phases are descri…
Accumulation of d-leucine, d-allo-isoleucine, and d-valine was observed in the growth medium of a lactic acid bacterium, Lactobacillus otakiensis JCM 15040, and the racemase responsible was purified from the cells and identified. The N-terminal amino acid sequence of the purified enzyme was GKLDKASKLI, which is consis…
We report dinaphtho[1,2- b:2′,1′- d ]chalcogenophenes as a new class of highly potential p-type semiconductors. As the result of comprehensive investigations including computational studies based on single-crystal structures successfully determined by X-ray analysis, the impacts of the chalcogen atoms are substantiall…
Protein phosphorylation is one of the most common post-translational modifications used in signal transduction to control cell growth, proliferation, and survival in response to both intracellular and extracellular stimuli. This modification is finely coordinated by a network of kinases and phosphatases that recognize…
Macromolecule flame retardant melamine‐dicyandiamide‐formaldehyde‐phosphoric acid (denoted as MDFP) was used as the shell material to synthesize zinc hydroxystannate@MDFP (denoted as ZHS@MDFP), a novel composite flame retardant with core–shell structure, via masterbatch method. The morphology and structure of ZHS@MDFP…
The electrical and thermal behavior of epoxy composites reinforced with different contents of multi‐walled carbon nanotubes (from 0.1 to 0.4 wt% CNT) is studied when they are subjected to relatively high DC voltages (from 1 to 100 V). These materials obey Ohm's law, reaching values of electrical conductivity in the ra…
The amorphous Co 3 O 4 nanostructure, which adopted sodium hexametaphosphate as structure-directing agent, has been successfully synthesized in large scale via two steps: preparation of the precursor and the calcination process. The results of X-ray diffraction indicate that the prepared materials are mainly composed…
We use Raman scattering to study phase transition in the graphitic g‐BC8 phase and graphite at high pressure up to 84 GPa. The E2g Raman active mode of graphite (G peak) can be detected up to 84 GPa. We demonstrate that there is (1) a phase transition in g‐BC8 and in graphite at 35 GPa and (2) that above 35 GPa, the g…
El fitoplancton de aguas continentales esta representado por 15 000 especies en el mundo. En México seregistraron 1 025 especies, casi el 6.8% de las algas continentales a nivel mundial y el 33.8% de las algas continentalesde México. Estuvo representado principalmente por las clases Bacillariophyceae (31.9%), Cyanophy…
Utilization of empty fruit bunches of oil palm in Indonesia is still very low, so it should be developed further. One of them by researching the manufacture of cellulose acetate from oil palm empty fruit bunches. The process used in this study is the cellanase with α-cellulose materials. Stages reaction is activation,…
Cellulose nanowhiskers are lightweight, inexpensive, biocompatible nanomaterials that have found wide range of applications. One of their important applications is in the development of reinforced polymer nanocomposites (PNC). The aim of this study was to isolate cellulose nanowhiskers from oil palm biomass microcryst…
The present study is focused on the applications of biosynthesized silver nanoparticles in various fields. Silver nanoparticles are synthesized in vitro using marine bacteria Shewanella algae bangaramma in the laboratory. The silver nanoparticles are characterized by using UV–Vis spectrum, TEM, FTIR, EDAX, XRD and AFM…
We report on phase sensitive surface states of CdS quantum dots (QDs), where it is noticed that a simple phase change from dispersion to solid has shown significant influence on the emission spectrum. As the solvent evaporates from the dispersion, apparently yellow dispersion transforms into a white light emitter beca…
TiO2 porous films were prepared on ITO coated glass slides by the sol-gel dip-coating method assisted with Polyethylene glycol (PEG). The films were used as photo-anodes in the photo-assisted electrolytic removal of cuprous ions in cyanide media. These were characterized by SEM, UV-Visible spectroscopy and XRD. The PE…