A special light-and-shadow pattern is shone through a photomask, onto a sheet or wafer of silicon that had been covered with a material called a photoresist. The light hardens the photoresist. When the board is dipped into a special acid, the parts that had no light on them are dissolved away.
Memory chips have thousands or millions of identical cells. Because is much easier to make than a CPU, (a large die with a non-repetitive structure), RAM chips are far less expensive than processors.
Christian liturgy
A Christian liturgy is a set of steps or rituals done by Christians as a form of worship, done by Christian denomination. The liturgy or form of worship has changed over time, and different groups also have different prescriptions on how such a celebration should be done. The worship on a Sunday might be different from that which is done on Easter.
Anglican, Orthodox, Lutheran, or other groups, when using the words "the liturgy", normally mean a standardized order of events observed during a religious service, often including the Eucharist or Communion. Liturgy may mean an elaborate formal ceremony such as the Catholic Mass. The "open" or "waiting" worship of Quakers is an example of a non-liturgical service because there is no structured order of events.
Liturgical churches are those that use a well-defined liturgy, in which many of the words and music used follow basic patterns each time the service is conducted. The liturgy may date to the second century or earlier. Most Orthodox, Catholic, Anglican, and Lutheran churches are liturgical, most other churches to a far lesser extent. Non-liturgical churches usually follow a common worship sequence from one service to the next, with several elements common to many such services. These elements often include readings from the Bible, hymns, a sermon, offerings of money, and at certain times, Communion.
Booby prize
A Booby prize is a prize of low value or a joke prize. It is sometimes given for a terrible performance or last-place finish. Booby prizes are sometimes humorously and jokingly seen as an object of pride as being noticed for doing something special - losing or coming in last-place. A booby prize is usually awarded and received with pleasant humor and understanding, it is not seen as a sign of disgrace.
Jerilderie, New South Wales
Jerilderie is a town of 768 people in the southern Riverina region of New South Wales, Australia. It is the only town in the Jerilderie Shire Council Local Government Area.
It can be found along the Newell Highway south-west of Sydney and north of the Victorian state border. Jerilderie's post code is 2716.
Macropod
Macropods are marsupials belonging to the family Macropodidae. That family includes kangaroos, wallabies, tree-kangaroos, pademelons, quokkas and others. They are native to Australia, New Guinea, and their surrounding islands. Before European settlement, there were about 65 species of macropods. Six species have since become extinct. Another 11 species have been greatly reduced in numbers.
Modern macropods are herbivores. They have specialized teeth made for grinding up fibrous plants. Macropods usually have a row of broad, straight front teeth, no canines, and a gap before their large molars.
The stomachs of the macropods contain lots of bacteria that help them to digest their food by breaking it down for them. Macropods have a certain blend of bacteria in their stomachs that lowers the amount of methane produced.
Macropods come in all different sizes. Almost all have a powerful tail and large back legs. The word 'macropod' comes from the Greek for 'large foot'. Their long legs allow macropods to move quickly, and for long distances.
Gestation lasts about one month. In larger species, it lasts a little longer. Usually a single offspring is born. It attaches itself to a teat inside the mother's pouch. The offspring is able to leave the pouch after 5-11 months. It is sexually mature at 1-3 years old, depending on the species.
Marsupials evolved about 160 million years ago during the Jurassic period. They reached Australia in the Palaeocene about 50 million years ago. The oldest macropod fossil found is about 12 million years old.
Shengzhou
Shengzhou is a city of Zhejiang Province in China. It is a part of Shaoxing Municipality. Its population(including suburbs) is about 735 000. Yueju Opera,which is a Chinese opera popular in China, originated in Shengzhou.
Yueju Opera
Yueju Opera (),is a Chinese opera popular in China. It originated in Shengxian County(namely Shengzhou). The word "Yue" in Chinese means Zhejiang province and the regions around it. "ju" means (Chinese) opera. At present, Yueju Opera is the second most popular opera in China, after the Beijing Opera.
Harbin
Harbin, is the capital city of Heilongjiang, a northeast province of China. In recent years, Harbin is well-known worldwide for Harbin International Ice and Snow Sculpture Festival, Harbin Summer Music Festival and Harbin International Beer Festival. Harbin Ice Festival makes Harbin become China's coolest ice city for a winter holiday trip.
Governing 12 districts and 10 counties, Harbin Municipality has a population of 9,873,743 and 4,754,753 of whom lives in the city proper of Harbin.
Administrative divisions as below:
Sirach
Sirach, by Ben Sira, which is also known as Wisdom of Jesus son of Sirach, the Wisdom of Ben Sira, or Ecclesiasticus, is a work from the early second century BC, its original version being written in Hebrew. It is part of the Apocrypha or deuterocanonical books.
"All wisdom is from the Lord
and with him it remains for ever.
The sand of the sea, the drops of rain,
and the days of eternity- who can count them?"
Alveolus
An alveolus (plural: alveoli) is a word used in anatomy for hollow cavities, which are empty areas within a body.
Although there are many different types of alveoli in the body, the word alveoli is usually used to talk about small air sacs in the lungs of mammals. These are also called "pulmonary alveoli". These alveoli are located at the ends of the air passageways in the lungs. They have very thin (one cell thick), wet walls and are surrounded with a network of small blood vessels, or capillaries. This allows gases to diffuse, or move across, the surface of the alveolus.
When a mammal breathes in, the concentration of oxygen is higher in the alveolus than in the red blood cells. Therefore, oxygen leaves the alveolus and enters the red blood cells. When a mammal breathes out, the opposite happens. The concentration of carbon dioxide is lower in the alveolus than in the red blood cells, so carbon dioxide leaves the red blood cells, enters the alveolus, and is exhaled.
In an average human lung, there are 480 million alveoli. Their total surface area is around 75 square meters.
Inside the alveoli is where a gas exchange occurs. Gas exchange is a biological process through which (usually two) different gases are transferred in opposite directions across a specialised respiratory surface. Gases are constantly required and produced as a by-product of cellular and metabolic reactions so an efficient system for their exchange is extremely important. It is linked with respiration in animals, and both respiration and photosynthesis in plants.
Parasitoid
Parasitoids are parasites whose larvae develop inside another organism's body. This usually results in the death of the host, which sets them apart from 'traditional' parasites. There are twelve superfamilies of parasitic wasps which are entirely or mainly parasitoid. The largest family are the ichneumons, with over 80,000 species.
In parasitoids the adult stage is free-living: it finds the 'host' for the next generation. The female parasitoid places the eggs, on or in the body of a host. The host is food for their growth.
Normal parasites use vectors as the way of getting to other hosts.