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TM Store
TM or Tm and variants may refer to: * Trademark, often indicated with the symbol ™ ** Trademark symbol Businesses and organizations * TM Forum, telecommunications and entertainment industry association * TM Supermarket, a chain of supermarkets in Zimbabwe * LAM Mozambique Airlines (IATA airline designator TM) * Telekom Malaysia, telecommunications company * Texas Mexican Railway (reporting mark TM) * TM (cellular service), a telecommunications brand in the Philippines * Toastmasters International, an international public speaking organization * Toyota Motor Corporation (NYSE symbol TM) * Tokyo Metro, one of the major subway systems of Tokyo Science and technology Biology and medicine * Melting temperature (Tm) in nucleic acid thermodynamics, at which half of DNA strands are in the ssDNA state * Transport maximum, where concentration increase does not speed membrane traversal * Transverse myelitis, a neurological condition in which the spinal cord is inflamed * Translational ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trademark
A trademark (also written trade mark or trade-mark) is a form of intellectual property that consists of a word, phrase, symbol, design, or a combination that identifies a Good (economics and accounting), product or Service (economics), service from a particular source and distinguishes it from others. Trademarks can also extend to non-traditional marks like drawings, symbols, 3D shapes like product designs or packaging, sounds, scents, or specific colours used to create a unique identity. For example, Pepsi® is a registered trademark associated with soft drinks, and the distinctive shape of the Coca-Cola® bottle is a registered trademark protecting Coca-Cola's packaging design. The primary function of a trademark is to identify the source of goods or services and prevent consumers from confusing them with those from other sources. Legal protection for trademarks is typically secured through registration with governmental agencies, such as the United States Patent and Trademark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traceability Matrix
In software development, a traceability matrix (TM) is a document, usually in the form of a table, used to assist in determining the completeness of a relationship by correlating any two baselined documents using a many-to-many relationship comparison. It is often used with high-level requirements (these often consist of marketing requirements) and detailed requirements of the product to the matching parts of high-level design, detailed design, test plan, and test cases. A requirements traceability matrix may be used to check if the current project requirements are being met, and to help in the creation of a request for proposal, software requirements specification, various deliverable documents, and project plan tasks.Carlos, Tom (October 21, 2008). Requirements Traceability Matrix - RTM. PM Hut, October 21, 2008. Retrieved October 17, 2009 from http://www.pmhut.com/requirements-traceability-matrix-rtm. Common usage is to take the identifier for each of the items of one docum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TM-83 Mine
The TM-83 is a Soviet off-route anti-tank mine with a shaped charge, developed in 1983, and first shown publicly in 1993. The mine utilises the Misznay Schardin effect to create an armour-penetrating projectile, and is activated using its infrared and seismic sensors. Deployment The mine can be installed on soil, or be attached to various objects only manually. The mine is generally positioned 5 meters from the road, and it is intended to attack and aimed using an integrated sight. The TM-83 can be deployed in two operation modes – autonomous or controlled. The primary difference is that the controlled version has a 100-meter-long wire attached, allowing the operator to switch it through its various modes repeatedly (safe or active, see ). If the mine is controlled, it can be switched to its safety mode and be easily removed; however, if the mine is in its autonomous mode, it is considered impossible to remove due to the high sensitivity of the seismic sensor and the chance t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TM-62 Series Of Mines
The TM-62 is a series of Soviet anti-tank blast mines produced in various variants. It served as the primary anti-tank landmine for the Soviet military. It has a central fuze and typically a explosive charge, but the variants differ greatly in detail. The mine can be laid manually or automatically from a mine laying machine including the PMR-1, PMR-2 wheeled towed mine layers, the GMZ-3 tracked mine laying vehicle and the VMR-2 helicopter mine laying system. The TM-62 can be fitted with the same fuzes as the TM-72, which include MVN-72 and MVN-80 fuzes, which are vibration and magnetism sensitive. The mine was used in the 2022 Russian invasion of Ukraine for antitank and antipersonnel use (as satchel charges). Russo-Ukrainian War Both Ukrainian and Russian soldiers have been observed to use modified TM-62s as thrown satchel charges. In addition, Ukrainian forces have deployed drones equipped with modified TM-62 payloads for precision strikes. Strikes by a Russian UAV drone, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TM-46 Mine
The TM-46 mine is a large, circular, metal-cased Soviet anti-tank mine. It uses either a pressure or tilt-rod fuze, which is screwed into the top. Anti-tank mines with this type of fuze were capable of inflicting much more damage to armored vehicles, when compared to a typical anti-personnel mine. Because the TM-46 has a metal casing, it is very easy to detect with a metal detector. However, mine-fields containing TM-46s may have also been sown with minimum metal mines, e.g. the PMA-2. Combat use The mine was used by the People's Army of Vietnam during the Vietnam War, and is found in many countries in Africa, the Middle East and Southeast Asia. Action MVM-583 fuze The MVM-583 is a mechanical pressure fuze. The activation pressure of this fuze is 140 kf. It comprises a striking mechanism, safety pin and the MD-6N shock tube detonator. Upon a vehicle driving over a TM-46 mine equipped with this fuze, the lid of the mine deforms along with the fuze. Upon further deforma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TM-41 Mine
The TM-41 was a circular, metal-cased Soviet anti-tank landmine used during the Second World War. The mines case consisted of a short cylinder with the entire top surface being used as a pressure plate. The mine has a carrying handle on the side of the mine. It was normally painted olive drab and was broadly similar to the larger, later, TM-44 mine. The mine could be waterproofed with washers and laid underwater, where it can remain operational for two months. Pressure on the pressure plate resulted in lock balls being force out of position, releasing a striker, which triggers a detonator, then a booster and then the mines main charge. The mine was used with anti-handling devices. A Chinese copy of the mine was also produced. Specifications * Diameter: 254 mm * Height: 140 mm * Weight: 5.4 kg * Explosive content: 3.9 kg of Amatol or TNT Troponin T (shortened TnT or TropT) is a part of the troponin complex, which are proteins integral to the contraction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TM 65 Mine
The TM 65 (Telamiina 65) is a circular Finnish minimum metal anti-tank blast mine. It is broadly based on the Russian '' TM-62 mine''. The mines body is made from a thin shell of fibreglass Fiberglass (American English) or fibreglass ( Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass c ... over a cast block of explosive, with a central fuze well that holds the pressure fuze. The original ''TM 65'' used a ''US-65'' fuze as used in the ''SM-65 anti-personnel mine'', the later TM 65 77 uses a pressure fuze similar to the Russian ''MV-5'' fuze called ''Painesytytin 77''. The fuze is covered with a plastic pressure plate, giving it an activation pressure of 150 to 300 kg. However, if this is not installed, the mine will activate with a pressure of a few kg. The mine also has a secondary fuze well on the side for the installation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Mode
A transverse mode of electromagnetic radiation is a particular electromagnetic field pattern of the radiation in the plane perpendicular (i.e., transverse) to the radiation's propagation direction. Transverse modes occur in radio waves and microwaves confined to a waveguide, and also in light waves in an optical fiber and in a laser's optical resonator. Transverse modes occur because of boundary conditions imposed on the wave by the waveguide. For example, a radio wave in a hollow metal waveguide must have zero tangential electric field amplitude at the walls of the waveguide, so the transverse pattern of the electric field of waves is restricted to those that fit between the walls. For this reason, the modes supported by a waveguide are quantized. The allowed modes can be found by solving Maxwell's equations for the boundary conditions of a given waveguide. Types of modes Unguided electromagnetic waves in free space, or in a bulk isotropic dielectric, can be described as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transition Metal
In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded. The lanthanide and actinide elements (the f-block) are called inner transition metals and are sometimes considered to be transition metals as well. They are lustrous metals with good electrical and thermal conductivity. Most (with the exception of group 11 and group 12) are hard and strong, and have high melting and boiling temperatures. They form compounds in any of two or more different oxidation states and bind to a variety of ligands to form coordination complexes that are often coloured. They form many useful alloys and are often employed as catalysts in elemental form or in compounds such as coordination complexes and oxides. Most are strongly paramagnetic because of their unpaired d electrons, as are many of their compounds. All of the elements that are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thulium
Thulium is a chemical element; it has symbol Tm and atomic number 69. It is the thirteenth element in the lanthanide series of metals. It is the second-least abundant lanthanide in the Earth's crust, after radioactively unstable promethium. It is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as a dopant in solid-state lasers, and as the radiation source in some portable X-ray devices. It has no significant biological role and is not particularly toxic. In 1879, the Swedish chemist Per Teodor Cleve separated two previously unknown components, which he called holmia and thulia, from the rare-earth mineral erbia; these were the oxides of holmium and thulium, respectively. His example of thulium oxide contained impurities of ytterbium oxide. A relatively pure sample of thulium oxide was first obtained in 1911. The metal itself was first obtained in 1936 by Wilhelm Klem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melting Point
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state of matter, state from solid to liquid. At the melting point the solid and liquid phase (matter), phase exist in Thermodynamic equilibrium, equilibrium. The melting point of a substance depends on pressure and is usually specified at a Standard temperature and pressure, standard pressure such as 1 Atmosphere (unit), atmosphere or 100 Pascal (unit), kPa. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point or crystallization point. Because of the ability of substances to Supercooling, supercool, the freezing point can easily appear to be below its actual value. When the "characteristic freezing point" of a substance is determined, in fact, the actual methodology is almost always "the principle of observing the disappearance rather than the formation of ice, that is, the #Melting point measurements, melting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
