Temporomandibular joint dysfunction is an umbrella term covering pain and dysfunction of the muscles of mastication and the temporomandibular joints. The most important feature is pain, followed by restricted mandibular movement, and noises from the temporomandibular joints (TMJ) during jaw movement. Although TMD is not life-threatening, it can be detrimental to quality of life; this is because the symptoms can become chronic and difficult to manage.
A vacuum cleaner, also known simply as a vacuum or a hoover, is a device that causes suction in order to remove dirt from floors, upholstery, draperies, and other surfaces. It is generally electrically driven.
Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source, such as a video display controller, to a display device, such as a computer monitor. It was developed with the intention of creating an industry standard for the transfer of uncompressed digital video content.
A transmembrane domain (TMD) is a membrane-spanning protein domain. TMDs generally adopt an alpha helix topological conformation, although some TMDs such as those in porins can adopt a different conformation. Because the interior of the lipid bilayer is hydrophobic, the amino acid residues in TMDs are often hydrophobic, although proteins such as membrane pumps and ion channels can contain polar residues. TMDs vary greatly in length, sequence, and hydrophobicity, adopting organelle-specific properties.
A tuned mass damper (TMD), also known as a harmonic absorber or seismic damper, is a device mounted in structures to reduce mechanical vibrations, consisting of a mass mounted on one or more damped springs. Its oscillation frequency is tuned to be similar to the resonant frequency of the object it is mounted to, and reduces the object's maximum amplitude while weighing much less than it.
The British Rail Class 89 is a prototype electric locomotive. Only one was built, in 1986, by British Rail Engineering Limited's Crewe Works. It was used on test-trains on both the West Coast and East Coast Main Lines. The locomotive was fitted with advanced power control systems and developed more than 6,000 bhp. After being withdrawn in 1992, it was returned to service in 1996, before being again withdrawn in 2000. As of January 2021, it is in the final stages of an overhaul that will return it to the main line.
A ceiling fan is a fan mounted on the ceiling of a room or space, usually electrically powered, that uses hub-mounted rotating blades to circulate air. They cool people effectively by increasing air speed. Fans do not reduce air temperature or relative humidity, unlike air-conditioning equipment but create a cooling effect by helping to evaporate sweat and increase heat exchange via convection. Fans may add a small amount of heat to the room mainly due to waste heat from the motor, though partially due to friction. Fans use significantly less power than air conditioning as cooling air is thermodynamically expensive. In the winter a ceiling fan can also be used to bring warm air, which naturally rises, back down to occupants. This can affect both thermostat readings and occupants' comfort, thereby improving climate control energy efficiency. Many ceiling fan units also double as light fixtures, eliminating the need for separate overhead lights in a room.
A direct-drive mechanism is a mechanism design where the force or torque from a prime mover is transmitted directly to the effector device without involving any intermediate couplings such as a gear train or a belt.
Thorn Electrical Industries Limited was a British electrical engineering company. It was listed on the London Stock Exchange, but merged with EMI Group to form Thorn EMI in 1979. It was de-merged in 1996 and became a constituent of the FTSE 100 Index, but was acquired by the Japanese Nomura Group only two years later. It is now owned by Terra Firma Capital Partners.
The VESA Digital Flat Panel (DFP) interface standard specifies a video connector and digital TMDS signaling for flat-panel displays. It features 20 pins and uses the PanelLink protocol; the standard is based on the preceding VESA Plug and Display (P&D) standard, ratified in 1997. Unlike the later, electrically-compatible Digital Visual Interface, DFP never achieved widespread implementation.
Voltas Limited is an Indian multinational home appliances company headquartered in Mumbai. It designs, develops, manufactures and sells products including air conditioners, air coolers, refrigerators, washing machines, dishwashers, microwaves, air purifiers, water dispensers. The company was incorporated on 6 September 1954 in Mumbai, as a collaboration between Tata Sons and Volkart Brothers. The company is currently chaired by Noel TataPradeep Bakshi is the company's current chief executive officer and managing director. Its shares are publicly traded on the Bombay Stock Exchange and National Stock Exchange of India.
A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan. Tiny ones used in computers are sometimes called biscuit blowers. These fans move air from the rotating inlet of the fan to an outlet. They are typically used in ducted applications to either draw air through ductwork/heat exchanger, or push air through similar. impellers. Compared to standard axial fans, they can provide similar air movement from a smaller fan package, and overcome higher resistance in air streams.
A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing, or case. This may direct the airflow, or increase safety by preventing objects from contacting the fan blades. Most fans are powered by electric motors, but other sources of power may be used, including hydraulic motors, handcranks, and internal combustion engines.
Ziehl-Abegg SE is a German manufacturer of fans for ventilation and air conditioning applications, as well as drive technology for elevators and motors with matching control technology. The company's headquarters are in Kuenzelsau, in Hohenlohekreis, Germany.
The wheel hub motor is an electric motor that is incorporated into the hub of a wheel and drives it directly.
81-717/714 is a metro car designed in the Soviet Union in the mid-1970s. The cars were made from 1976 to 2010 by Metrovagonmash and the I. E. Yegorov Vagonmash factories of Mytishchi and Saint Petersburg, respectively. Production is still ongoing for specific models and/or modernizations.
The Renfe Class 310 is a class of 60 four axle Bo'Bo' diesel-electric locomotives for shunting and freight built by Meinfesa with General Motors Electromotive Division components.
Mašinska industrija Niš or Mechanical Industry Niš, is a Serbian holding corporation headquartered in Niš, Serbia. It is engaged in the energy, mining, process engineering, equipment for agriculture and a railways program. It declared bankruptcy in April 2015.
The Thai Meteorological Department (TMD) is the Thai governmental agency responsible for weather forecasting and monitoring. It is an agency of the Ministry of Digital Economy and Society (MDES). It maintains four meteorological centers: one each for the northern region, the northeastern region, and two in the southern region.
