Mukaiyama s classic catalytic asymmetric aldol reaction with enolsilanes has been improved upon over the years; now new approaches to the reaction have been developed. Those reviewed here are the use of new transition metal based catalysts for the aldol reaction using silyl enolates, the use of other O-silylated nucleophiles, tin-modified or even unmodified ketones as substrates, and the use of...

A plasmonic nanostructure forming a metal-semiconductor interface generates electric potential by optical illumination. Grounded nanostructures can also generate potentials based on the recently demonstrated plasmoelectric effect that allows all metallic photoelectric devices to be fabricated and is capable of generating negative positive at off-resonance merely tuning illumination wavelength. ...

Liquid crystals (LCs) are nanophotonic materials which can interact with light in the molecular scale. While LCs widely used various displays, last decade has witnessed emerging applications of for nondisplays. Based on unique stimuli–responsive property and optical property, field sensors explored. In addition, ions distributed nature bionts, playing critical roles many physiological activitie...

This paper reports a comprehensive laboratory study into the thermophysical, physical-mechanical characteristics, and tribological properties of designed composite materials based on polytetrafluoroethylene. In structures machines mechanisms, significant role belongs to conjugations made from polymeric polymer-composite materials. The reliability machines, in general, depends large extent movab...

Separation of various chemical components from each otheJO is often the most difficult step in analytical procedures. The problems attached to separation become further magnified when the species concentations are extremely low. A group of techniques that has proven useful especially in dilute solutions for separating and concentrating metallic as well as nonmetallic ions and complexes, protein...

Ferroalloys are one of the most important raw materials widely used in steelmaking processes. Depending on cleanliness ferroalloys, they can be an inevitable source impurities and nonmetallic inclusions (NMIs) products. Herein, five different industrial ferroalloys (FeTi, FeMo, FeW, MnN, FeCrN) investigated. This is done using 2D investigations polished cross sections ferroalloy samples 3D NMIs...

The European Green Deal’s goals are anticipated to be fulfilled in large part thanks the New Circular Economy Action Plan. It is believed that recycling materials will have a significant positive impact on environment, particularly terms of reducing greenhouse gas emissions and impacts this preventing climate change. Due complexity issue its practical ramifications, activity Waste Electrical El...

Oscillatory density profiles (layers) have previously been observed at the free surfaces of liquid metals but not in other isotropic liquids. We have used x-ray reflectivity to study a molecular liquid, tetrakis(2-ethylhexoxy)silane. When cooled to T/Tc approximately 0.25 (well above the freezing point for this liquid), density oscillations appear at the surface. Lateral order within the layers...

Nonmetallic inclusions are well known to influence product quality and process stability in the production of steel. A step that is very sensitive presence nonmetallic inclusion (NMI) continuous casting. Here, so-called clogging phenomenon can occur, resulting a distinct disruption casting decreased steel quality. The considerably contributes build-up deposits submerged entry nozzle provoking i...