Among the self-lubricating materials the so-called engineering plastics have increasing importance.
A structural motif designed for enhancing electron hole separation in semiconducting composite materials, the so-called double bubble, is introduced.
This provided the organic materials, the so-called protopetroleum, for later diagenesis (i.e., the series of processes involving biological, chemical, and physical changes) into true petroleum.
Recent emergence of 2D materials (the so-called van der Waals materials), of which graphene is the most famous one, opens new routes in creation of novel materials by mere layer-by-layer combinations.
In 1963, the 117 Committee of the Japan Society for the Promotion of Sciences (JSPS) specified standard procedures for the determination of lattice constants and crystallite sizes of carbon materials, especially graphitized materials, the so-called "Gakushin" method.
We extend this concept to combined physical and chemical heterogeneity by additionally considering the time that a water parcel has been exposed to reactive materials, the so-called exposure time.
Comparative analysis and interpretation of compositional glass data is initially based on the essential raw materials, the so-called reduced glass composition that excludes intentionally added modifiers such as colourants and opacifiers, and includes the basic glassmaking oxides and their associated 'contaminant' oxides.
Their aim is the suspension of the bladder neck and urethra using synthetic materials, the so-called sling.
Additional driving force is needed, which can be supplied by introducing a layer of a second organic material (the so-called double-layer cell, Figure 1a).
Humans show a bias towards negative emotional material, the so-called negativity bias.
I had often pondered the hypothesis of which of the two were the material... the so called dream world or the illusion while in the supernal realm.
