In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems. There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems.
A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor.
Gas Analyzer. All-inclusive system for water determination in liquefied and permanent gases ... Extend the scope of ion chromatography by interfacing your Metrohm IC with various sampling system and detection techniques ... จำกัดผู้เล่นเพียง 100 ท่าน หรือภายในวันที่ 30 ...
Photoelectric sensors, also known as photo eyes, emit a beam of light that is used to detect the presence or absence of items and equipment or changes in surface conditions. When the emitted light is interrupted or reflected by the object, the change in light patterns is measured by a receiver and the target object or surface is recognized.
UPS Freight Less-than-Truckload (“LTL”) transportation services are offered by TFI International Inc., its affiliates or divisions (including without limitation TForce Freight), which are not affiliated with United Parcel Service, Inc. or any of its affiliates, subsidiaries or related entities (“UPS”).
Maxim ships one billionth automotive IC. 2015. Maxim names William P. Sullivan to Board of Directors. 2016. Sold our San Antonio, Texas wafer fab to TowerJazz. 2016. Kip Hagopian retires as Chairman of Maxim Integrated’s Board of Directors after 25 Years of service and William Sullivan elected as ew Chairman. 2016.
Low-energy electron diffraction (LEED) is a technique for the determination of the surface structure of single-crystalline materials by bombardment with a collimated beam of low-energy electrons (30–200 eV) and observation of diffracted electrons as spots on a fluorescent screen.. LEED may be used in one of two ways: Qualitatively, where the diffraction pattern is recorded and analysis of ...