Bulgarians in the United Kingdom include citizens of the United Kingdom who trace their Bulgarian ancestry. The number of Bulgarian-born people resident in the UK has risen from 5,351 at the time of the 2001 Census to an estimated 69,000 in 2015. Since 1 January 2014, Bulgarians have freedom of movement and work in the United Kingdom as citizens of the European Union.

Rajko Lotrič (born 20 August 1962) is a Yugoslavian former ski jumper.

In chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes. Most commonly, the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on earth. The molar mass is appropriate for converting between the mass of a substance and the amount of a substance for bulk quantities.

Martin Warner (born 1972) is a British businessman, and the chief executive officer (CEO) and founder of Flix Premiere, an online distribution and streaming service for independent films; Founder and CEO of Autonomous Flight; Founder and CEO of Entrepreneur Seminar. Warner co-founded botObjects, a controversial 3D printing software and hardware manufacturer, which was acquired in January 2015 by 3D Systems. Warner co-invented a full colour 3D desktop printing device called ProDesk3D.

In chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. The molar mass is a bulk, not molecular, property of a substance. The molar mass is an average of many instances of the compound, which often vary in mass due to the presence of isotopes. Most commonly, the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on earth. The molar mass is appropriate for converting between the mass of a substance and the amount of a substance for bulk quantities. The molecular weight is very commonly used as a synonym of molar mass, particularly for molecular compounds; however, the most authoritative sources define it differently (see molecular mass). The formula weight is a synonym of molar mass that is frequently used for non-molecular compounds, such as ionic salts. The molar mass is an intensive property of the substance, that does not depend on the size of the sample. In the International System of Units (SI), the base unit of molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol. The mole was defined in such as way that the molar mass of a compound, in g/mol, is numerically equal (for all practical purposes) to the average mass of one molecule, in atomic mass units (daltons). Thus, for example, the average mass of a molecule of water is about 18.0153 daltons, and the molar mass of water is about 18.0153 g/mol. For chemical elements without isolated molecules, such as carbon and metals, the molar mass is computed dividing by the number of moles of atoms instead. Thus, for example, the molar mass of iron is about 55.845 g/mol. Between 1971 and 2019, SI defined the "amount of substance" as a separate dimension of measurement, and the mole was defined as the amount of substance that has as many constituent particles as there are atoms in 12 grams of carbon-12. In that period, the molar mass of carbon-12 was thus exactly 12 g/mol, by definition. Since 2019, a mole of any substance has been redefined in the SI as the amount of that substance containing an exactly defined number of particles, N = 6.02214076×1023. Therefore, the molar mass of a compound now is simply the mass of this number of molecules of the compound.

In biochemistry, Michaelis–Menten kinetics is one of the best-known models of enzyme kinetics. It is named after German biochemist Leonor Michaelis and Canadian physician Maud Menten. The model takes the form of an equation describing the rate of enzymatic reactions, by relating reaction rate (rate of formation of product, ) to , the concentration of a substrate S. Its formula is given by This equation is called the Michaelis–Menten equation. Here, represents the maximum rate achieved by the system(which happens at saturating substrate concentration). The Michaelis constant is numerically equal to the substrate concentration at which the reaction rate is half of . Biochemical reactions involving a single substrate are often assumed to follow Michaelis–Menten kinetics, without regard to the model's underlying assumptions.

Virtua Tennis (Power Smash in Japan) is a 1999 tennis arcade game created by Sega-AM3. The player competes through tennis tournaments in an arcade mode. For the home console market the game was expanded with the introduction of the campaign mode. It was later ported to Dreamcast in 2000, and for Microsoft Windows in 2002. A Game Boy Advance version was also released in 2002. A sequel, Virtua Tennis 2, was released in 2002 and was later updated and ported for the PlayStation Portable, under the name Virtua Tennis: World Tour. 2006 saw the release of Virtua Tennis 3 in the arcades (using the Sega Lindbergh hardware). Xbox 360, PlayStation 3, PlayStation Portable and PC versions were released in 2007. Virtua Tennis 2009, was released on June 9, 2009 on PC, PS3, Xbox 360 and Wii platforms. The latest addition to the franchise, Virtua Tennis 4, was released on May 10, 2011.
Virtua Tennis (Power Smash in Japan) is a 1999 tennis arcade game created by Sega-AM3. The player competes through tennis tournaments in an arcade mode. For the home console market the game was expanded with the introduction of the campaign mode. It was later ported to Dreamcast in 2000, and for Microsoft Windows in 2002. A Game Boy Advance version was also released in 2002.
Virtua Tennis