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HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

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Feline Panleukopenia
Feline panleukopenia virus (FPLV) is a species of parvovirus that can infect all wild and domestic members of the felid (cat) family worldwide. It is a highly contagious, severe infection that causes gastrointestinal, immune system, and nervous system disease. ("Panleukopenia" means a decrease in the number of white blood cells.) It has been thought to be single variant of Carnivore protoparvovirus (CPV 1); however, it has been confirmed that a feline panleukopenia illness can be caused by CPV 2a, 2b, and 2c. FPLV is commonly referred to as: It is sometimes confusingly referred to as "cat plague" and "feline distemper". In addition to members of the felid family, it can also affect some members of related families (e.g. raccoon, mink).
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  • 23 Nov 2022
Topic Review
Soil in Dogu'a Tembien
The soils of the Dogu’a Tembien woreda (district) in Tigray (Ethiopia) reflect its longstanding agricultural history, highly seasonal rainfall regime, relatively low temperatures, an extremely great variety in lithology (with dominance of basalts and limestone) and steep slopes. Outstanding features in the soilscape are the fertile highland Vertisols and Phaeozems in forests.
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  • 23 Nov 2022
Biography
J. Richard Gott
John Richard Gott III (born February 8, 1947) is a professor of astrophysical sciences at Princeton University. He is known for his work on time travel and the Doomsday argument. Paul Davies's bestseller How to Build a Time Machine credits Gott with the proposal of using cosmic strings to create a time machine. Gott's machine depends upon the antigravitational tension of the (hypothetical) st
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  • 23 Nov 2022
Topic Review
Causes of Schizophrenia
The causes of schizophrenia have been the subject of much debate, with various factors proposed and discounted or modified. The language of schizophrenia research under the medical model is scientific. Such studies suggest that genetics, prenatal development, early environment, neurobiology, and psychological and social processes are important contributory factors. Psychiatric research into the development of the disorder is often based on a neurodevelopmental model (proponents of which see schizophrenia as a syndrome.) However, schizophrenia is diagnosed on the basis of symptom profiles. Neural correlates do not provide sufficiently useful criteria. The one thing that researchers can agree on is that schizophrenia is a complicated and variable condition. It is best thought of as a syndrome, a cluster of symptoms that may or may not have related causes, rather than a single disease. It is possible for schizophrenia to develop at any age, but it mostly happens to people within the ages of 16–30 (generally males aged 16–25 years and females 25–30 years); about 75 percent of people living with the illness developed it in these age-ranges. Childhood schizophrenia that develops before the age of 13 is quite rare. There is on average a somewhat earlier onset for men than women, with the possible influence of the female sex hormone estrogen being one hypothesis and socio-cultural influences another. Studies have found that people born during the months of late winter and early spring have a slight risk of developing schizophrenia, a phenomenon known as the seasonality effect. Possible factors implicated include vitamin D deficiency, and prenatal infection.
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  • 24 Nov 2022
Topic Review
List of Translations of the Paschal Greeting
This article lists translations of the Christian Paschal greeting in various languages.
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Biography
Hal Anger
Hal Oscar Anger (May 20, 1920 – October 31, 2005)[1] was an United States electrical engineer and biophysicist at Donner Laboratory, University of California, Berkeley, known for his invention of the gamma camera.[2] In all, Anger held 15 patents, many of them for work at the Ernest O. Lawrence Radiation Laboratory. Anger received several awards in recognition of his inventions and their cont
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  • 23 Nov 2022
Topic Review
Beecher Family
Originating in New England, one particular Beecher family in the 19th century was a political family notable for issues of religion, civil rights, and social reform. Notable members of the family include clergy (Congregationalists), educators, authors and artists. Many of the family were Yale-educated and advocated for abolitionism, temperance, and women's rights. Some of the family provided material or ideological support to the Union in the American Civil War. The family is of English descent. Locations named after persons of this family include: Beecher, Illinois, named after Henry Ward Beecher and Beecher Island, named after Lt. Fredrick H. Beecher.
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  • 23 Nov 2022
Topic Review
Northern Cheyenne Indian Reservation
The Northern Cheyenne Tribe of the Northern Cheyenne Indian Reservation (Template:Lang-chy; formerly named the Tongue River) is the federally recognized Northern Cheyenne tribe. Located in southeastern Montana, the reservation is approximately 690 square miles (1,800 km2) in size and home to approximately 5,000 Cheyenne people. The tribal and government headquarters are located in Lame Deer, also the home of the annual Northern Cheyenne pow wow. The reservation is bounded on the east by the Tongue River and on the west by the Crow Reservation. There are small parcels of non-contiguous off-reservation trust lands in Meade County, South Dakota, northeast of the city of Sturgis. Its timbered ridges that extend into northwestern South Dakota are part of Custer National Forest and it is approximately 40 miles (64 km) east of the site of the 1876 Battle of the Little Bighorn. According to tribal enrollment figures as of March 2013, there were approximately 10,050 enrolled tribal members, of which about 4,939 were residing on the reservation,Template:Full short with approximately 91% of the population Native American (full or part blood quantum) and 72.8% identifying as Cheyenne. Slightly more than a quarter of the population five years or older spoke a language other than English. Members of the Crow Nation also live on the reservation.
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  • 23 Nov 2022
Biography
Kallistos Ware
Kallistos Ware (born Timothy Richard Ware, 11 September 1934 – 24 August 2022) was an English bishop and theologian of the Eastern Orthodox Church. From 1982, he held the titular bishopric of Diokleia in Phrygia (Greek: Διόκλεια Φρυγίας), later made a titular metropolitan bishopric in 2007, under the Ecumenical Patriarchate of Constantinople. He was one of the best-known modern
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  • 23 Nov 2022
Topic Review
Spinning Dancer
The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion GIF image showing a silhouette of a pirouetting female dancer. The illusion, created in 2003 by Japanese web designer Nobuyuki Kayahara, involves the apparent direction of motion of the figure. Some observers initially see the figure as spinning clockwise (viewed from above) and some counterclockwise. Additionally, some may see the figure suddenly spin in the opposite direction. The illusion derives from the lack of visual cues for depth. For instance, as the dancer's arms move from viewer's left to right, it is possible to view her arms passing between her body and the viewer (that is, in the foreground of the picture, in which case she would be circling counterclockwise on her right foot) and it is also possible to view her arms as passing behind the dancer's body (that is, in the background of the picture, in which case she is seen circling clockwise on her left foot). When she is facing to the left or to the right, her breasts and ponytail clearly define the direction she is facing, although there is ambiguity in which leg is which. However, as she moves away from facing to the left (or from facing to the right), the dancer can be seen facing in either of two directions. At first, these two directions are fairly close to each other (both left, say, but one facing slightly forward, the other facing slightly backward) but they become further away from each other until we reach a position where her ponytail and breasts are in line with the viewer (so that neither her breasts nor her ponytail are seen so readily). In this position, she could be facing either away from the viewer or towards the viewer, so that the two possible positions are 180 degrees apart. Another interesting aspect of this illusion can be triggered by placing a mirror vertically, besides the image. The natural expectation would be for the normal image and its reflection to spin in opposite directions. This does not necessarily happen, and provides a paradoxical situation where both mirrored dancers spin in the same direction.
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