Conference

A conference is a meeting of people who "confer" about a topic.

District (LDS Church)

A district of The Church of Jesus Christ of Latter-day Saints (LDS Church) is a geographical administrative unit composed of a number of congregations called branches. A district is a subdivision of a mission of the church and in many ways is analogous to a stake of the church. The leader of a district is the mission president, who selects a local district president as his agent. The district president may choose two men to assist him; the three together form the district presidency. The three members of the district presidency are given the honorific title "President".

Districts are usually established where the church is new or where there are insufficient numbers of church members to organize a stake. Prior to the late 1920s, districts were known as conferences. A district may be thought of as a stake in a beginning or embryonic state.

Notable differences between districts and stakes

A district has a function analogous to a stake, but is organized where there are too few members to organize a stake. Its relationship to a stake is similar to the relationship between a ward and a branch. Once the membership in a district achieves sufficient numbers, it may be reorganized as a stake. Districts differ from stakes in the following ways:

Convention (meeting)

A convention, in the sense of a meeting, is a gathering of individuals who meet at an arranged place and time in order to discuss or engage in some common interest. The most common conventions are based upon industry, profession, and fandom. Trade conventions typically focus on a particular industry or industry segment, and feature keynote speakers, vendor displays, and other information and activities of interest to the event organizers and attendees. Professional conventions focus on issues of concern to the profession and advancements in the profession. Such conventions are generally organized by societies dedicated to promotion of the topic of interest. Fan conventions usually feature displays, shows, and sales based on pop culture and guest celebrities. Science fiction conventions traditionally partake of the nature of both professional conventions and fan conventions, with the balance varying from one to another. Conventions also exist for various hobbies, such as gaming or model railroads.

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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