Crusher

A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.

Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated. Crushing is the process of transferring a force amplified by mechanical advantage through a material made of molecules that bond together more strongly, and resist deformation more, than those in the material being crushed do. Crushing devices hold material between two parallel or tangent solid surfaces, and apply sufficient force to bring the surfaces together to generate enough energy within the material being crushed so that its molecules separate from (fracturing), or change alignment in relation to (deformation), each other. The earliest crushers were hand-held stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil. Querns and mortars are types of these crushing devices.

Djibouti

Coordinates: 11°30′N 43°00′E / 11.500°N 43.000°E / 11.500; 43.000

Djibouti (/dʒɪˈbuːti/ ji-BOO-tee; Arabic: جيبوتي‎ Jībūtī, French: Djibouti, Somali: Jabuuti, Afar: Gabuuti), officially the Republic of Djibouti, is a country located in the Horn of Africa. It is bordered by Eritrea in the north, Ethiopia in the west and south, and Somaliland in the southeast. The remainder of the border is formed by the Red Sea and the Gulf of Aden at the east. Djibouti occupies a total area of just 23,200 km² (8,958 sq mi).

In antiquity, the territory was part of the Land of Punt. Nearby Zeila (now in Somaliland) was the seat of the medieval Adal and Ifat Sultanates. In the late 19th century, the colony of French Somaliland was established following treaties signed by the ruling Somali and Afar sultans with the French and its railroad to Dire Dawa (and later Addis Ababa) allowed it to quickly supersede Zeila as the port for southern Ethiopia and the Ogaden. It was subsequently renamed to the French Territory of the Afars and the Issas in 1967. A decade later, the Djiboutian people voted for independence. This officially marked the establishment of the Republic of Djibouti, named after its capital city. Djibouti joined the United Nations the same year, on September 20, 1977. In the early 1990s, tensions over government representation led to armed conflict, which ended in a power sharing agreement in 2000 between the ruling party and the opposition.

Yūgen gaisha

A yūgen gaisha or yūgen kaisha (Jp. 有限会社, lit. "limited company," abbreviated in English as Y.K. or as wasei-eigo Co., Ltd.) is a form of business organization in Japan.

Yūgen gaisha are based on the German GmbH and were implemented in Japan in the Limited Company Act (有限会社法) of 1940. Companies Act, implemented on May 1, 2006, replaced the yūgen gaisha with a new form of company called gōdō gaisha, based upon the American limited liability company. Following the implementation, no new YKs were allowed in Japan, but pre-existing YKs were allowed to continue their operations as kabushiki gaisha under special rules.

Whether the term is pronounced as yūgen gaisha or yūgen kaisha is up to the local dialect or the company's preference when it is part of the company's name. While it is pronounced yūgen gaisha in standard Japanese, the alphabetic abbreviation is always Y.K. by standard.

Structure

As of 2005, a Y.K. can have up to 50 investors, called members (社員, shain). The members were required to provide at least ¥3 million in capital contributions, with each investment unit (持分, mochibun) valued at no less than ¥50,000. The minimum capital amount was much more permissive than the ¥10 million minimum for a kabushiki gaisha. A Y.K. was also not required to issue certificates for investment units, whereas stock certificates were required for a K.K.

Middle East

The Middle East (also called the Mid East) is a transcontinental region centered on Western Asia and Egypt. The corresponding adjective is Middle-Eastern and the derived noun is Middle-Easterner. Formerly, the Eurocentric synonym Near East (as opposed to Far East) was commonly used. Arabs, Azeris, Kurds, Persians, and Turks constitute the largest ethnic groups in the region by population, while Armenians, Assyrians, Circassians, Copts, Druze, Jews, Maronites, Somalis, and other ethnic and ethno-religious groups form significant minorities.

The History of the Middle East dates back to ancient times, with the (geo-political) importance of the region being recognized for millennia. Several major religions have their origins in the Middle East, including Judaism, Christianity, and Islam; the Baha'i faith, Mandaeism, Unitarian Druze, and numerous other belief systems were also established within the region. The Middle East generally has a hot, arid climate, with several major rivers providing irrigation to support agriculture in limited areas such as the Nile Delta in Egypt, the Tigris and Euphrates watersheds of Mesopotamia, and most of what is known as the Fertile Crescent. Most of the countries that border the Persian Gulf have vast reserves of crude oil, with the dictatorships of the Arabian Peninsula in particular benefiting from petroleum exports. In modern times the Middle East remains a strategically, economically, politically, culturally and religiously sensitive region.

Research and development

Research and Development (R&D), also known in Europe as research and technical (or technological) development (RTD), is a general term for activities in connection with corporate or governmental innovation. R&D is a component of Innovation and is situated at the front end of the Innovation lifecycle. Innovation builds on R&D and includes commercialization phases. The activities that are classified as R&D differ from company to company, but there are two primary models, with an R&D department being either staffed by engineers and tasked with directly developing new products, or staffed with industrial scientists and tasked with applied research in scientific or technological fields which may facilitate future product development. In either case, R&D differs from the vast majority of corporate activities in that it is not often intended to yield immediate profit, and generally carries greater risk and an uncertain return on investment.

Background

New product design and development is more often than not a crucial factor in the survival of a company. In an industry that is changing fast, firms must continually revise their design and range of products. This is necessary due to continuous technology change and development as well as other competitors and the changing preference of customers. Without an R&D program, a firm must rely on strategic alliances, acquisitions, and networks to tap into the innovations of others.