Wednesday, November 30, 2005

Reverse Osmosis

Common use for Reverse osmosis is in purifying water where it produces water, which is in demand at all, places. One of the finest filtration under Reverse Osmosis is Hyper Filtration, where the removals of particles are as small as ions. In this Process, water gets purified and the various salts and other impurities are removed to improve the Properties of fluid, its taste as well as color. Reverse osmosis occurs when the water is moved across the membrane against the concentration gradient, from lower concentration to higher concentration. It thus purifies water by ejecting out fluids, inorganic chemicals such as nitrates, calcium, and magnesium, other ions and contaminants. It uses a semi-permeable membrane, allowing the fluid that is being purified to pass through it. Most of the reverse osmosis technology procedures are described in http://www.discountreverseosmosis.com/ undergoes a cross flow Process to allow the membrane to clean itself periodically. As some of the fluid gets rested in downstream, continuous cross-flow process helps or sweeps out the rejected species away from the membrane.

Sunday, November 27, 2005

Painting Mediums

Paint and paintings materials differ depending up on the place where it is to be painted whether it is an interior painting or exterior. Interior paintings basically use materials such as oil paint, water colors, wooden board, fabric etc where as exterior paintings involves using water resistant base and mediums.

Wednesday, November 16, 2005

Condition of Water

Most people get their water from the household tap. This water originates from lakes, rivers, streams, and underground sources. The majority of water goes through a system of cleaning at the local water treatment plant. However, because of a lack of funds to provide the necessary technology, many harmful pollutants and water borne diseases are present in the finished treated water.
Distillation
The health of an organism is absolutely linked with the quantity and the quality of water they drink. For maintaining optimum health a person need to drink 8-10 glasses of water per day. The daily ejection of wastes from each and every cell of an organism, the flushing of the alimentary canal, and the purification of blood lays on the water which we intake.
The distillation process in http://www.water-filters-purifiers-softeners.com/ takes off all impurities from water. Outfitted distillers are competent at taking off nitrates (fertilizer residuals), bacteria, cysts, viruses, sodium, dissolved solids, most organic compounds (solvents, herbicides, and pesticides), and heavy metals together with lead and arsenic, and radio nuclides from water. Distillers generally take away about 99.5 percent of the impurities from the normal water.

Tuesday, September 20, 2005

MANs

Metropolitan Area Networks or MANs are large computer networks usually spanning a campus or a city. They typically use wireless infrastructure or optical fiber connections to link their sites.
For instance a university or college may have a MAN that joins together many of their local area networks (LANs) situated around site of a fraction of a square kilometer. Then from their MAN they could have several wide area network (WAN) links to other universities or the Internet.
Some technologies used for this purpose are ATM, FDDI and SMDS. These older technologies are in the process of being displaced by Ethernet-based MANs (e.g. Metro Ethernet) in most areas. MAN links between LANs have been built without cables using either microwave, radio, or infra-red free-space optical communication links.
DQDB, Distributed Queue Dual Bus, is the Metropolitan Area Network standard for data communication. It specified in the IEEE 802.6 standard. Using DQDB, networks can be up to 30 miles long and operate at speeds of 34 to 155 Mbit/s.
Several notable networks started as MANs, such as the Internet peering points MAE-West and MAE-East and the Sohonet media network.

Friday, August 19, 2005

Afrikaans

Afrikaans is a West Germanic language mainly spoken in South Africa and Namibia. It was originally the dialect that developed among the Afrikaner Protestant settlers and the indentured or slave workforce brought to the Cape area in southwestern South Africa by the Dutch East India Company (Dutch language: Verenigde Oost-Indische Compagnie - VOC) between 1652 and 1705. A relative majority of these first settlers were from the United Provinces (now Netherlands), though there were also many from Germany, a considerable number from France, a few from Scotland, and various other countries. The indentured workers and slaves were Malays, and Malagasy in addition to the indigenous Khoi and Bushmen.
Research by J. A. Heese indicates that until 1807, 36.8% of the ancestors of the White Afrikaans speaking population were Dutch, 35% were German, 14.6% were French and 7.2% non-white (of African and/or Asian origins). Heese's figures are questioned by other researchers, however, and especially the non-white component quoted by Heese is very much in doubt.
A sizeable minority of those who spoke Afrikaans as a first language were not white. The dialect became known as "Cape Dutch". Later, Afrikaans was sometimes also referred to as "African Dutch" or "Kitchen Dutch". Afrikaans was considered a Dutch dialect until the early 20th century, when it began to be widely recognized as a distinct language. The name Afrikaans is simply the Dutch word for African, i.e. the African form of the Dutch language.

Friday, February 25, 2005

1944: France invaded, Soviet-Finland armistice, surrender of minor Axis, Ardennes offensive

German-held Normandy was invaded on 6 June 1944 ("D-Day") by the Westen Allies, opening the "second front" against Germany.2 Hedgerows aided the defender, and for months the Allies measured progress in hundreds of yards. An Allied breakout was effected at St.-Lô, and the most powerful German force in France, the Seventh Army was destroyed in the Falaise pocket while counterattacking. The French Riviera was invaded by Allied forces stationed in Italy on 15 August, and linked up with forces from Normandy. Paris was captured by the Allies on 25 August.
Shortly after Allied landings at Normandy, on 9 June, the Soviet Union began an offensive on the Karelian Isthmus, that after three months would force Nazi Germany's co-belligerent Finland to an armistice. Operation Bagration, a Soviet offensive involving 2.5 million men and 6,000 tanks, was launched on 22 June, destroying the German Army Group Centre and taking 350,000 prisoners. By early 1944, the Red Army had reached the border of Poland and lifted the Siege of Leningrad.
Romania surrendered in August of 1944 and Bulgaria in September. British forces attempted a fast advance into Germany with Operation Market Garden in September, but were repulsed. The Warsaw Uprising was fought between 1 August and 2 October. Germany withdrew from the Balkans and held Hungary until February 1945.
In December of 1944, the German Army made its last major offensive in the West, attempting to capture the vital port of Antwerp and cripple the Allies in the Battle of the Bulge. The offensive was defeated. By now, the Soviets had reached the eastern borders of pre-war Germany.