Monday, November 30, 2009
Sunday, November 29, 2009
Saturday, November 28, 2009
Superinsulation is an approach to building design, construction, and retrofitting. A superinsulated house is intended to be heated predominantly by intrinsic heat sources (waste heat generated by appliances and the body heat of the occupants) with very small amounts of backup heat. This has been demonstrated to work in very cold climates but requires close attention to construction details in addition to the insulation.
Friday, November 27, 2009
A refrigerant is a compound used in a heat cycle that undergoes a phase change from a gas to a liquid and back. The two main uses of refrigerants are refrigerators/freezers and air conditioners (cf. coolant). Since it was discovered in the 1980s that the most widely used refrigerants were major causes of ozone depletion, a worldwide phaseout of ozone-depleting refrigerants has been undertaken. These are being replaced with "ozone-friendly" refrigerants.
Thursday, November 26, 2009
Mysophobia is a term used to describe a pathological fear of contact with dirt, to avoid contamination and germs. Someone who has such a fear is often referred to as a mysophobe. The term was introduced by Dr. William Alexander Hammond in 1879 when describing a case of obsessive-compulsive disorder (OCD) exhibited in repeatedly washing one's hands.
Wednesday, November 25, 2009
Tuesday, November 24, 2009
A tender or coal-car is a special rail vehicle hauled by a steam locomotive containing the locomotive's fuel (wood, coal, or oil) and water. Steam locomotives consume large quantities of water compared to the quantity of fuel, so tenders are necessary to keep the locomotive running over long distances. A locomotive that pulls a tender is called a tender locomotive. Locomotives that do not have tenders and carry all their fuel and water on board the locomotive itself are called tank engines.
A brake tender is a heavy variant used primarily to provide greater braking efficiency.
Monday, November 23, 2009
Momordica charantia is a tropical and subtropical vine of the family Cucurbitaceae, widely grown for edible fruit, which is among the most bitter of all vegetables. English names for the plant and its fruit include bitter melon or bitter gourd (translated from Chinese: 苦瓜; pinyin: kǔguā), and karela from the Indian name of the vegetable.
The herbaceous, tendril-bearing vine grows to 5 m. It bears simple, alternate leaves 4-12 cm across, with 3-7 deeply separated lobes. Each plant bears separate yellow male and female flowers.
Sunday, November 22, 2009
Saturday, November 21, 2009
Aniridia is a rare congenital condition characterized by the underdevelopment of the eye's iris. This usually occurs in both eyes. It is associated with poor development of the retina at the back of the eye preventing normal vision development. Aniridia does not cause lack of vision.
Friday, November 20, 2009
Thursday, November 19, 2009
Wednesday, November 18, 2009
In an outrigger canoe or bangka and in sailboats such as the proa, an outrigger is a thin, long, solid, hull used to stabilise an inherently unstable main hull. The outrigger is positioned rigidly and parallel to the main hull so that the main hull is less likely to capsize. If only one outrigger is used on a vessel, its weight reduces the tendency to capsize in one direction and its buoyancy reduces the tendency in the other direction.
Tuesday, November 17, 2009
Monday, November 16, 2009
Sunday, November 15, 2009
Saturday, November 14, 2009
Friday, November 13, 2009
Thursday, November 12, 2009
Wednesday, November 11, 2009
Agastya (अगस्त्य in devanagari, pronounced /ə gəs tyə/) was a Vedic sage or rishi. Agastya and his clan are also credited[who?] to have "authored" many mantras of the Rig Veda, the earliest and most revered Hindu scripture, in the sense of first having the mantras revealed in his mind by the Supreme Brahman. Agastya is also the author of Agastya Samhita[ref: Dharma Bharathi]. In some reckonings, Agastya is the greatest of the Seven Sages or Saptarshis. The word is also written as Agasti. A-ga means a mountain, Asti, thrower. Also a name of Lord Shiva. Agastya the Rishi, was born of both Gods, Mitra and Varuna, from Urvashi. Agastya is also the Indian astronomical name of the star of Canopus, is said to be the 'cleanser of waters', since its rising coincides with the calming of the waters of the Indian Ocean. Another reference is in the Mahabharata in Sauptikaparva as the teacher of Guru Drona, who gave Drona, the greatest of weapons, Brahmastra (used by both Arjuna and Ashwatthama at the end of the war).
Tuesday, November 10, 2009
Phagocytes (from the Greek words phagein, meaning 'to eat or devour', and kutos, meaning 'hollow vessel') are cells that are found in the blood, bone marrow and other tissues of vertebrates. Phagocytes ingest pathogenic and infectious agents in the body. Like all cells involved in the immune system, they originate in the bone marrow. Phagocytes derive from a group of stem cells in the bone marrow called myeloid progenitor cells. Phagocytes are the basis of defense in the innate immune system; these cells ingest pathogens and often take part in antigen presentation. The types of phagocytes include neutrophils, macrophages, and monocytes. Dendritic cells also participate in phagocytosis and presentation of antigens to other cells that are important in the immune response.
Monday, November 9, 2009
Sunday, November 8, 2009
Saturday, November 7, 2009
The group's beliefs are described fully in The Hacktivismo Declaration, which seeks to apply the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights to the Internet. Oxblood Ruffin, the director of Hacktivismo, has argued forcefully against definitions of hacktivism that include web defacements or denial-of-service attacks. Hacktivismo has also authored its own software license agreement, the Hacktivismo Enhanced-Source Software License Agreement (HESSLA). The HESSLA is an open source license that prohibits use or modification that would violate human rights or introduce features that spy on the user. (This prohibition illustrates the difference between open source licenses and free software licenses.)
Friday, November 6, 2009
An auger is a device for moving material or liquid (see Archimedes' screw) by means of a rotating helical flighting. The material is moved along the axis of rotation. For some uses the helical 'flighting' is enclosed in a tube, for other uses the flighting is not encased. An integral part of a drill, the auger of the drill bit uses this mechanism to remove shavings from the hole being drilled.
Thursday, November 5, 2009
Wednesday, November 4, 2009
Abmahnung (a written warning in German) is the formal request by one person to another person to forthwith stop a certain behaviour.
If this formal request is made by an attorney, then it is a cease-and-desist letter (but not a cease-and-desist order, which is called einstweilige Verfügung in German law). It is used much more between private parties than a consent decree is in the United States, since German law permits attorneys to file suit to bring an end to an observed wrong done to a third party, whereas in the United States, parties must have standing to sue (i.e. only the wronged party can sue).
Tuesday, November 3, 2009
Monday, November 2, 2009
Sunday, November 1, 2009
The bağlama is a stringed musical instrument shared by various cultures in the Eastern Mediterranean, Near East, and Central Asia. It is sometimes referred to as the saz (from the Persian language ساز, meaning a kit or set). According to The New Grove Dictionary of Music and Musicians, "the terms 'bağlama' and 'saz' are used somewhat interchangeably in Turkey."