A supercritical fluid (SCF) is one kind of fluid that is highly compressed gases that combine properties of gases and liquids in an intriguing manner. It is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist. It is a substance.....
San Marino (/ˌsæn məˈriːnoʊ/, Italian: sam maˈriːno), officially the Republic of San Marino (Italian: Repubblica di San Marino), small republic situated on the slopes of Mount Titano, on the Adriatic side of central Italy between the Emilia-Romagna and Marche regions and surrounded on all.....
Maucherite is a grey to reddish silver-white nickel arsenide mineral. It is a tetragonal nickel arsenide, occurring as brittle, opaque, reddish-grey crystals which have a metallic luster and tarnish on exposure. It is also known as placodine and Temiskamite. The unit cell is of symmetry group P4.....
Petroleum is a naturally occurring, yellowish-black liquid found in geological formations beneath the Earth’s surface. It is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional distillation, i.e. separation of a liquid mixt.....
Reflection usually begins with an outline of what went on. Common examples include the reflection of sunshine, sound, and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it’s reflected. Mir.....
Clustering is the task of dividing the population or data points into a number of groups such that data points in the same groups are more similar to other data points in the same group than those in other groups. In chemistry, a water cluster is a discrete hydrogen-bonded assembly or cluster of .....
Valence bond theory assumes that electrons in a molecule are simply the electrons in the original atomic orbitals, with some used while bonding. In chemistry, valence bond (VB) theory is one of the two basic theories, along with molecular orbital (MO) theory, that was developed to use the methods.....
Florence (/ˈflɔːrəns/ FLORR-ənss; Italian: Firenze (fiˈrɛntse)), Latin Florentia, city, capital of Firenze Provincia (province) and Toscana (Tuscany) regione (region), central Italy. It is the most populated city in Tuscany, with 383,084 inhabitants in 2013, and over 1,520,000 in its metro.....
Hot Water Extraction (HWE) is a method of carpet cleaning. It involves a combination of hot water and cleaning agents being injected into the fibers of a carpet at high pressure and all lifted soil being removed by a powerful vacuum. Hot water extraction requires water hot enough to clean effecti.....
Superheated steam is steam at a temperature higher than its vaporization point at the absolute pressure where the temperature is measured. It is often required for process reasons or in applications where the steam will be used in a steam turbine. It is a form of steam at a temperature higher tha.....
When an object is moving, the friction is proportional and perpendicular to the normal force (N). Friction is independent of the area of contact as long as there is an area of contact. Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements slidi.....
Millennials, also known as Generation Y (or simply Gen Y), because it comes after Generation X those people between the early 1960s and the 1980s. The publication Ad Age was one of the first to coin the term “Generation Y”, in an editorial in August 1993. But the term didn’t age well, a.....