High Quality Content by WIKIPEDIA articles! Liquid oxygen — abbreviated LOx, LOX or Lox in the aerospace, submarine and gas industries — is one of the physical forms of elemental oxygen.
High Quality Content by WIKIPEDIA articles! This is a list of known oxidation states of the chemical elements, excluding nonintegral values. The most common states appear in bold. The table is based on that of Greenwood and Earnshaw, with additions noted. Oxidation state 0, which occurs for all elements, is implied by the column with the symbol of the element. The format of the table, which was devised by Mendeleev in 1889, shows the periodicity of the oxidation states of the elements.
High Quality Content by WIKIPEDIA articles! Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion. The best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead. Both these are imprecise terms, both having been commonly referred to as lattens in the past. Today the term copper alloy tends to be substituted, especially by museums.
High Quality Content by WIKIPEDIA articles! Around 1150 Dacian anthroponyms and 900 toponyms have been preserved in ancient sources. As far as the onomastic of Dacians and Thracians is concerned, opinions are divided. According to Crossland (1982), the evidence of names from the Dacian, Mysian and Thracian area seems to indicate divergence of a `Thraco-Dacian` language into northern and southern groups of dialects, but not so different as to rank Thracian and Dacian as separate languages, There were also the development of special tendencies in word formation and of certain secondary phonetic features in each group. Mateescu (1923), Rosetti (1978) sustain that Thracian onomastic include elements that are common to Geto-Dacians and...
High Quality Content by WIKIPEDIA articles! In contrast to a two-dimensional chart of nuclides, this is a one-dimensional list of nuclides. This table of nuclides shows the 905 observed nuclides that are either stable, or (if radioactive), have half-lives longer than one hour.
High Quality Content by WIKIPEDIA articles! Mesons are unstable subatomic particles composed of one quark and one antiquark. They are part of the hadron particle family – particles made of quarks. The other members of the hadron family are the baryons – subatomic particles composed of three quarks. The main difference between mesons and baryons is that mesons have integer spin (thus are bosons) while baryons are fermions (half-integer spin). Because mesons are bosons, the Pauli exclusion principle does not apply to them. Because of this, they can act as force mediating particles on short distances, and thus play a part in processes such as the nuclear interaction.
High Quality Content by WIKIPEDIA articles! The following is a list of straight-chain and branched alkanes and their common names, sorted by number of carbon atoms.
High Quality Content by WIKIPEDIA articles! This is a list of ancient cities, towns, villages, and fortresses in and around Thrace and Dacia. A number of these settlements were Dacian and Thracian, but some were Celtic, Greek, Roman, Paeonian, or Persian.
High Quality Content by WIKIPEDIA articles! Atomic nuclei consist of protons and neutrons, which attract each other through the nuclear force, while protons repel each other via the electric force due to their positive charge. These two forces compete, leading to some combinations of neutrons and protons being more stable than others. Neutrons stabilize the nucleus, because they attract each other and protons equally by the strong nuclear force, which helps offset the electrical repulsion between protons. As a result, as the number of protons increases, an increasing ratio of neutrons to protons is needed to form a stable nucleus.
High Quality Content by WIKIPEDIA articles! This article lists rulers of Thrace and Dacia, and includes Thracian, Paeonian, Celtic, Dacian, Scythian, Persian or Ancient Greek up to the point of its fall to the Roman empire, with a few figures from Greek mythology.
High Quality Content by WIKIPEDIA articles! Lithium hydride is the inorganic compound with the formula LiH. It is a colorless solid, although commercial samples are gray. Characteristic of a salt-like, or ionic, hydride, it has a high melting point and is not soluble in any solvent with which it does not react. With a molecular mass of slightly less than 8, it is the lightest ionic compound.
High Quality Content by WIKIPEDIA articles! A lithium-ion battery (sometimes Li-ion battery or LIB) is a family of rechargeable battery types in which lithium ions move from the negative electrode to the positive electrode during discharge, and back when charging. Chemistry, performance, cost, and safety characteristics vary across LIB types. Unlike lithium primary batteries (which are disposable), lithium-ion electrochemical cells use an intercalated lithium compound as the electrode material instead of metallic lithium.
High Quality Content by WIKIPEDIA articles! The lithium iron phosphate (LiFePO4) battery, also called LFP battery, is a type of rechargeable battery, specifically a lithium-ion battery, which uses LiFePO4 as a cathode material. LiFePO4 batteries have somewhat lower energy density than the more common LiCoO2 design found in consumer electronics, but offers longer lifetimes, better power density (the speed that charge can be drawn from them) and are inherently safer. LiFePO4 is finding a number of roles in vehicle use and backup power.
High Quality Content by WIKIPEDIA articles! Lithium tantalate (LiTaO3), is a crystalline solid which possesses unique optical, piezoelectric and pyroelectric properties which make it valuable for nonlinear optics, passive infrared sensors such as motion detectors, terahertz generation and detection, surface acoustic wave applications, cell phones and possibly pyroelectric nuclear fusion. Considerable information is available from commercial sources about this crystal.
High Quality Content by WIKIPEDIA articles! Lithium-ion polymer batteries, polymer lithium ion, or more commonly lithium polymer batteries (abbreviated Li-poly, Li-Pol, LiPo, LIP, PLI or LiP) are rechargeable (secondary cell) batteries. LiPo batteries are usually composed of several identical secondary cells in parallel to increase the discharge current capability, and are often available in series "packs" to increase the total available voltage.
High Quality Content by WIKIPEDIA articles! Lithium aluminium hydride, commonly abbreviated to LAH or known as LithAl, is an inorganic compound with the chemical formula LiAlH4. It was discovered by Finholt, Bond and Schlesinger in 1947. This compound is used as a reducing agent in organic synthesis, especially for the reduction of esters, carboxylic acids, and amides. The solid is dangerously reactive toward water, releasing gaseous hydrogen (H2). Some related derivatives have been discussed for hydrogen storage.
High Quality Content by WIKIPEDIA articles! Liu Bei`s takeover of Yi Province was a military campaign by the warlord Liu Bei in taking control of Yi Province (covering present-day Sichuan and Chongqing) from its Governor, Liu Zhang. The campaign took place between 212 and 215 during the prelude to the Three Kingdoms period of Chinese history. It concluded with victory for Liu Bei and his successful takeover of the province from Liu Zhang. Yi Province would serve as the foundation of the state of Shu Han during the Three Kingdoms period.
High Quality Content by WIKIPEDIA articles! Livermorium is the synthetic superheavy element with the symbol Lv and atomic number 116. The name was adopted by IUPAC on May 31, 2012.