Åled

Åled is a locality situated in Halmstad Municipality, Halland County,Sweden, with 1,634 inhabitants as of 2010. The community is located just over 10 km northeast of Halmstad along Swedish national road 26. The Nissan river runs though the area.

Spånstad is located in the northwestern part of the village, and Enslöv is in the east. Northeast of Åled there is a small lake named Torsjön and "Gröta håla" (a giant's kettle). Åled is located along the Halmstad-Nässjö railway line, formerly part of Halmstad Nässjö Railways, HNJ. It was completed in 1882.

The musician Göran Fritzson from Gyllene Tider was born and raised in Åled.

References

Light-emitting diode

A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor.

An LED is often small in area (less than 1 mm²) and integrated optical components may be used to shape its radiation pattern.

Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light. Infrared LEDs are still frequently used as transmitting elements in remote-control circuits, such as those in remote controls for a wide variety of consumer electronics. The first visible-light LEDs were also of low intensity, and limited to red. Modern LEDs are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.

LEd

LEd (formerly LaTeX Editor) is a TeX/LaTeX editing software working under Microsoft Windows. It is a freeware product.

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Catalysis

Catalysis (/kəˈtælᵻsᵻs/) is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst (/ˈkætəlᵻst/). With a catalyst, reactions occur faster and require less activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.

Technical perspective

In the presence of a catalyst, less free energy is required to reach the transition state, but the total free energy from reactants to products does not change. A catalyst may participate in multiple chemical transformations. The effect of a catalyst may vary due to the presence of other substances known as inhibitors or poisons (which reduce the catalytic activity) or promoters (which increase the activity). The opposite of a catalyst, a substance that reduces the rate of a reaction, is an inhibitor.

Catalyzed reactions have a lower activation energy (rate-limiting free energy of activation) than the corresponding uncatalyzed reaction, resulting in a higher reaction rate at the same temperature and for the same reactant concentrations. However, the detailed mechanics of catalysis is complex. Catalysts may affect the reaction environment favorably, or bind to the reagents to polarize bonds, e.g. acid catalysts for reactions of carbonyl compounds, or form specific intermediates that are not produced naturally, such as osmate esters in osmium tetroxide-catalyzed dihydroxylation of alkenes, or cause dissociation of reagents to reactive forms, such as chemisorbed hydrogen in catalytic hydrogenation.

Public Relations Exercise

Public Relations Exercise were a Leicester, England based post-hardcore/alternative rock group. A five-piece combining aspects of screamo and math rock, layered with penetrative and socially observant lyrics.

History

The band began as a product of the development of bedroom songwriters Martin Smith and Lloyd Carter. From an early age, they worked on various projects with local drummer Danny Star, and with the later addition of Irish-born bassist, Tiernan Welch, and guitarist, Spencer Lee, their line-up was finalised in September 2005. The name is taken from the inlay of Radiohead's second album, The Bends.

In their short history; Public Relations Exercise played with acts including Youthmovies, 65daysofstatic, Foals and many others. After demoing material for some time, the band recorded their debut single 'Subteniente', at Far Heath Studios with producer Angus Wallace (The Fall, The Prodigy) in 2007, which was released as a through Nottingham based Field Records in conjunction an extensive UK tour with ex-Million Dead frontman Frank Turner and London Hardcore outfit Score One For Safety.

Catalyst (disambiguation)

A catalyst is a substance which increases the rate of a chemical reaction.

Catalyst may also refer to:

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