Samantha912/NLP_A2_WTH huggingface dataset:
Phosphotungstic acid haematoxylin (PTAH) is a mix of haematoxylin with phosphotungstic acid, used in histology for staining.

It stains some tissue in contrasting colors in a way similar to haematoxylin and eosin stain, as phosphotungstic acid binds to tissue proteins. It is used to show gliosis in the central nervous system, tumours of skeletal muscles, and fibrin deposits in lesions. Muscle is stained blue-black to dark brown, connective tissue is pale orange-pink to brownish red, fibrin and neuroglia stain deep blue, coarse elastic fibers show as purple, and bone and cartilage obtain yellowish to brownish red color.

PTAH is ideal for demonstrating striated muscle fibers and mitochondria, often without a counterstain.  As such, it is used to identify contraction bands, as seen in contraction band necrosis.

PTAH stains ependymomas while it does not stain choroid plexus papillomas, providing one means of differentiating these tumors.

This technique has been largely replaced by immunohistochemistry techniques.

Staining principle

There is much more phosphotungstic acid in the solution than hematein. The phosphotungstic acid binds all of the available hematein to form a blue lake pigment. This lake stains the muscle cross striations, fibrin, nuclei, and other tissue elements blue. The rest of the phosphotungstic acid stains the red-brown components, such as collagen.

Staining procedural notes

Zenker fixative is preferred, although formalin fixed tissue can be used. If this is the case, the tissue should be mordanted in Zenkers solution before staining. Most texts recommend mordanting in Zenker fixative overnight at room temperature, but it can be done for 3.5 hours in a 56 to 60 degrees Celsius oven.

PTAH solution, Gram Iodine, 5% sodium thiosulfate, 0.25% Potassium Permanganate, and 5% Oxalic Acid solution are needed.

After staining, slides should be dehydrated quickly because the red-brown components lose their color when exposed to water or alcohol.

References

Staining
Iago is the main antagonist in the play Othello by William Shakespeare

Iago may also refer to:

Biology
 Iago (fish), a genus of hound sharks
 Iago sparrow, endemic to the Cape Verde archipelago

Characters
 Iago (Aladdin), a parrot in the 1992 film Aladdin and various Disney media
 Iago, a character in the American television series Gargoyles

People
 Iago, a form of the given name Jacob or James
 Iago (footballer, born 1995) or Iago Sampaio Silva, Brazilian footballer
 Iago (footballer, born 1997) or Iago Amaral Borduchi, Brazilian footballer
 Iago (footballer, born 1999) or Iago Fabrício Gonçalves dos Reis, a Brazilian footballer
 Iago ap Beli (c. 560–c. 616), king of Gwynedd
 Iago ap Idwal (ruled 950–979), king of Gwynedd
 Iago Falque (born 1990), is a Spanish footballer who plays as an attacking midfielder
 Iago Iglesias (born 1984), known simply as Iago, a Spanish professional footballer
 Iago, a pen-name of Sir Robert Walpole

Place
 Iago, Texas, United States
 Santiago, Cape Verde, an island also called "St. Iago" or "St. Jago"

Other
 Iago (film),  a 2009 Italian film
 IAGO, the International Abstract Games Organization
 Iago, a GWR Banking Class steam locomotive on the Great Western Railway
 Porth Iago, the site of the ancient St Medin's Church near Aberdaron, Gwynedd, Wales
 A Spanish and Welsh variant of the name Jacob

See also
 
 Jago (disambiguation)
 Yago (disambiguation)
William Douglas (6 June 1848 – 7 September 1887) was a New Zealand cricketer. He played one first-class match for Otago during the 1878–79.

Douglas was born at Longford, Tasmania in 1848 and was educated at Horton College on the island. His father, Roddam Douglas, was born in England at Fareham in Hampshire in 1817 and his uncle, Adye Douglas was Premier of the Colony of Tasmania. Douglas is known to have played cricket in Tasmania towards the end of the 1860s, and both his father and brother, Onslow Douglas, also played cricket in the colony.

A leading member of Albion Cricket Club in Dunedin and later captain of Gore Cricket Club, Douglas played for Otago against a touring Australian side in January 1878 and made his only first-class appearance during the following season in a provincial representative match against Canterbury―the only match played in New Zealand during the season which is considered to hold first-class status. He was out first ball in both of his innings, recording a king pair.

Douglas had moved to New Zealand during the 1870s, initially working for the government Railway Department. He was the agent and later manager for the New Zealand Loan and Mercantile Agency Company at Gore in the Southland Region of New Zealand from 1882. He died there in 1887 from syncope aged 39, leaving a wife and a daughter.

References

1848 births
1887 deaths
New Zealand cricketers
Otago cricketers
Cricketers from Tasmania
People from Longford, Tasmania
The Downtown Wilkesboro Historic District in Wilkesboro, North Carolina is a  historic district that was listed on the National Register of Historic Places in 2009.  It included 69 contributing buildings, two contributing sites and one contributing object.  It includes architecture by Wheeler, McMichael and Co.

The district includes the Wilkes County Courthouse, a 1902 Beaux-Arts/Classical Revival style building by Charlotte-based architects Wheeler & Runge.  The building is large, brick and has a "tetrastyle Ionic portico and Second Empire cupola dominates the Courthouse Square and its surroundings and serves as a major landmark in the town as well as in Wilkes County."

Gallery

References

Historic districts on the National Register of Historic Places in North Carolina
Queen Anne architecture in North Carolina
Colonial Revival architecture in North Carolina
Geography of Wilkes County, North Carolina
National Register of Historic Places in Wilkes County, North Carolina
The Kapp Toscana Group is a geologic group in Svalbard and Jan Mayen in the Barents Sea, Norway.

Description 
The group dates back to the Late Triassic, and comprises the rock formations of Tschermakfjellet, De Geerdalen and Wilhelmøya. The group is named from the headland of Kapp Toscana at the southern side of Van Keulenfjorden in Wedel Jarlsberg Land at Spitsbergen, Svalbard. The thickness of the group varies from  of deltaic shales with interbedded sandstones.

The Kapp Toscana Group was initially defined as a formation, but has later become a group. The type section was taken from Kapp Toscana at Van Keulenfjorden, where the thickness of the unit was , while its two members Tschermakfjellet and De Geerdalen had type sections from Botneheia.

References

Bibliography 
 
 

Geologic groups of Europe
Geologic formations of Norway
Triassic System of Europe
Triassic Norway
Ladinian Stage
Rhaetian Stage
Shale formations
Sandstone formations
Deltaic deposits
Geology of Svalbard
Jan Mayen
Slavica may refer to:

People
 Slavica Đukić (born 1960), Serbian handball player
 Slavica Ecclestone (born 1958), Croatian fashion model
 Slavica Jeremić (born 1957), Serbian handball player

Other
 
 Slavica, Croatia, a village in Primorje-Gorski Kotar, Croatia
 Slavica (film), a 1947 Yugoslav drama film

See also
 Slava (given name)
 

Croatian feminine given names
Feminine given names
Serbian feminine given names
Lincoln Township is an inactive township in Clark County, in the U.S. state of Missouri.

Lincoln Township was established in 1868, taking the name of President Abraham Lincoln.

References

Townships in Missouri
Townships in Clark County, Missouri
The Michoacan pocket gopher (Zygogeomys trichopus) is a species of rodent in the family Geomyidae. It is monotypic within the genus Zygogeomys. It is endemic to Mexico where its natural habitat is temperate, high-altitude forests. Its numbers are declining and it is listed by the IUCN as "endangered".

Description
The Michoacan pocket gopher is a small animal with short, dense, black, lustrous fur and a hairless tail. The eyes are small and deep-set and there is a pad-like region of bare skin just behind the nostrils. It is docile when caught, making no attempt to bite as do other pocket gophers.

Distribution and habitat
The Michoacan pocket gopher is endemic to the Trans-Mexican Volcanic Belt mountain range in central southern Mexico, where it occurs in four discrete locations near west of Lake Pátzcuaro at altitudes over . The fossil record shows that members of the genus Zygogeomys, including two other now extinct species, were widespread in the late Pliocene epoch in the southwestern United States. Its typical habitat is mixed forests of spruce, pine, and alder with deep friable soil suitable for burrowing. A number of small populations separated by unsuitable terrain exist. The species shows little genetic variation and the present population may be a relict of a previous, more widespread distribution.

Natural history
The Michoacan pocket gopher lives in a burrow and throws up a characteristic, cone-shaped mound of soil on the surface with no visible entrance. A central chamber has been found  underground and may be where the young are raised. Little is known of the animal's breeding habits, which may be seasonal, as males caught in March and August had small testes while one caught in December had large ones. A pregnant female containing one embryo has been caught in December. This animal is seldom caught in surface traps and it may live and forage almost entirely underground.

In its natural habitat of Michoacán, the pocket gopher has been reported to cause damage to avocado trees and mutilate young trees in reforestation projects, as well as wreak structural damage on roads, building sites, and irrigation canals.

Status
The habitat requirements of the Michoacan pocket gopher are very specific, and where agriculture replaces the native woodland in which it lives, it is restricted to higher altitudes and tends to be replaced by other species of pocket gopher (Pappogeomys). Its total area of occurrence is less than , its range is fragmented, and its population is declining, and the IUCN has listed it as "endangered".

References

Michoacan Pocket Gopher
Endemic mammals of Mexico
Natural history of Michoacán
Rodents of North America
Fauna of the Trans-Mexican Volcanic Belt
Endangered animals
Endangered biota of Mexico
Endangered fauna of North America
Mammals described in 1895
Taxonomy articles created by Polbot
James Hurdis (1763–1801) was an English clergyman and poet.

Life
Born in Bishopstone, East Sussex, Hurdis attended the The Prebendal School and studied at St Mary Hall, Oxford, and Magdalen College, Oxford, later becoming a Fellow of Magdalen College.

Hurdis was curate for the East Sussex village of Burwash from 1786, and it was there that he wrote The Village Curate, a blank verse poem published anonymously in 1788. 

In 1791 he became the vicar of his home church at Bishopstone. The following year his sister Catherine died. In 1793 he was appointed Professor of Poetry at Oxford University.

Sussex shepherds at this time used to catch wheatears in small cage traps to sell as songbirds. Hurdis used to free the trapped birds, but would leave coins in their place.

Hurdis died in 1801 and there is a memorial to him in Bishopstone Church. The Town Council Offices were at Hurdis House named in his honour. His eldest son James Henry Hurdis was a notable amateur artist.

References

People from Seaford, East Sussex
1763 births
1801 deaths
18th-century English Anglican priests
Alumni of St Mary Hall, Oxford
Alumni of Magdalen College, Oxford
Fellows of Magdalen College, Oxford
Oxford Professors of Poetry
People from Lewes District
Jesse Reese, was a black communist and militant trade unionist in the United States.

Early life and career 
After being forced to work in a chain gang, Reese fled from Mississippi to Gary, Indiana in the 1920s. He likely joined the Communist Party shortly after arriving. He lived with Walter Mackerl during the Great Depression. The two of them knew each other from the Universal Negro Improvement Association and Reese was described as "a diehard" by Mackerl.

He got a job at Youngstown Sheet and Tube, which was one of the "little steel" companies, in Indiana Harbor in 1929. According to Reese, a Communist Party organizer came to his home, to ask him to become active in the Amalgamated Association as his assignment. When he was warned that he would be confronted with Jim crow, Reese replied "Well, I have a few other things on my mind. Freedom, Tom Mooney, the Scottsboro boys–nine young Negro boys framed for rape in Scottsboro, Alabama."

Reese was one of the few openly black Communists and served as a spokesman for the party. Reese served as the president of the Youngstown Lake Front Lodge of the Amalgamated Association of Iron, Steel and Tin workers, before he became the first vice president of the newly formed Steel Worker Organizing Committee (SWOC) Local 1011 in 1938.

In the 1930s Reese was named as one of the "six most active" union organizers for the Steel Workers Organizing Committee. In the summer of 1936, SWOC and National Negro Congress held meetings 3 days a week, twice a day, corresponding with the shifts of the workers. George Kimbley, the first black steel worker to join SWOC in Gary, Indiana recounts how he was recruited:

See also 

 Little Steel strike
Communist Party USA and African Americans

Further reading

References

External links 
 1937 Steel strike in Ohio

Members of the Communist Party USA
Year of death missing
Congress of Industrial Organizations people
African-American trade unionists
United Steelworkers people
Year of birth missing
Amalgamated Association of Iron and Steel Workers people
Washington Augusto Poyet Carreras(12 January 1939 – 16 June 2007) was a Uruguayan basketball player who competed in the 1960 Summer Olympics and in the 1964 Summer Olympics. He was the father of footballer Gus Poyet, and the grandfather of Diego Poyet.

References

External links
 

1939 births
2007 deaths
Uruguayan men's basketball players
1959 FIBA World Championship players
Olympic basketball players for Uruguay
Basketball players at the 1960 Summer Olympics
Basketball players at the 1963 Pan American Games
Basketball players at the 1964 Summer Olympics
Pan American Games competitors for Uruguay
1967 FIBA World Championship players
In philately, primitives, also called natives, are postage stamps that were crudely designed and printed as compared with the sophisticated productions of industrialized countries such as the United Kingdom or the United States.  A number of such stamps were produced in the classic stamp period in remote or undeveloped locales such as Mauritius.   Due to their charm and sometimes rarity, primitives are among the most popular stamps with stamp collectors.

Several well known primitives copied the designs of standard postage stamps of major countries.  For example, the early stamps of Mauritius were crude, locally produced copies of the then current postage stamps of the United Kingdom.  Similarly, the stamps of Corrientes, a province in northern Argentina, were inept imitations of earlier stamps of France, depicting the agricultural goddess Ceres.   Other primitives are of their own unique design.

Other primitives include the following:

British Guiana "Cottonreels", 1850–51.
Cape of Good Hope Wood block triangle stamps of 1861.  
 India stamps of 1854.
 Various Indian Native Feudatory State stamps.
 Some early stamps of Mexico
New Caledonia Napoleon III, 1859.

References

Philatelic terminology
Postage stamps
Thermophotonics (often abbreviated as TPX) is a concept for generating usable power from heat which shares some features of thermophotovoltaic (TPV) power generation. Thermophotonics was first publicly proposed by solar photovoltaic researcher Martin Green in 2000.  However, no TPX device is known to have been demonstrated to date, apparently because of the stringent requirement on the emitter efficiency. 

A TPX system consists of a light-emitting diode (LED) (though other types of emitters are conceivable), a photovoltaic (PV) cell, an optical coupling between the two, and an electronic control circuit. The LED is heated to a temperature higher than the PV temperature by an external heat source.  If no power is applied to the LED, the system functions much like a very inefficient TPV system, but if a forward bias is applied at some fraction of the bandgap potential, an increased number of electron-hole pairs (EHPs) will be thermally excited to the bandgap energy.  These EHPs can then recombine radiatively so that the LED emits light at a rate higher than the thermal radiation rate ("superthermal" emission). This light is then delivered to the cooler PV cell over the optical coupling and converted to electricity.

The control circuit presents a load to the PV cell (presumably at the maximum power point) and converts this voltage to a voltage level that can be used to sustain the bias of the emitter.  Provided that the conversion efficiencies of electricity to light and light to electricity are sufficiently high, the power harnessed from the PV cell can exceed the power going into the bias circuit, and this small fraction of excess power (originating from the heat difference) can be utilized.  It is thus in some sense a photonic heat engine.

Possible applications of thermophotonic generators include solar thermal electricity generation and utilization of waste heat.  TPX systems may have the potential to generate power with useful levels of output at temperatures where only thermoelectric systems are now practical, but with higher efficiency.

A patent application for a thermophotonic generator using a vacuum gap with thickness on the order of a micrometer or less was published by the US Patent Office in 2009 and assigned to MTPV Corporation of Austin, Texas, USA. This proposed variant of the technology allows better thermal insulation because of the gap between the hot emitter and cold receiver, while maintaining relatively good optical coupling between them due to the gap's being small relative to the optical wavelength.

References 
 

Thermodynamics
Photovoltaics
Dexterity Island is an uninhabited island in the Qikiqtaaluk Region of Nunavut, Canada. It is located in Baffin Bay off the northeastern coast of Baffin Island. Adams Island is  to the south, while Bergesen Island is  to the west, across Isbjorn Strait.

History
An Inuit settlement existed on Dexterity Island, but left before the arrival of the Hudson's Bay Company. The group camped on the landward side in the winter and the eastern side in the summer.

References

External links 
 Dexterity Island in the Atlas of Canada - Toporama; Natural Resources Canada

Islands of Baffin Island
Islands of Baffin Bay
Uninhabited islands of Qikiqtaaluk Region
Pietro Antonio Spinelli (18 January 1597 – 9 December 1645) was a Roman Catholic prelate who served as Archbishop of Rossano (1629–1645).

Biography
Pietro Antonio Spinelli was born in Torre, Italy, on 18 January 1597. On 28 May 1629, he was appointed during the papacy of Pope Urban VIII as Archbishop of Rossano. On 4 June 1629, he was consecrated bishop by Carlo Emmanuele Pio di Savoia, Cardinal-Bishop of Albano, with Paolo Emilio Santori, Archbishop of Urbino, and Ranuccio Scotti Douglas, Bishop of Borgo San Donnino, serving as co-consecrators. He served as Archbishop of Rossano until his death on 9 December 1645.

Episcopal succession
While bishop, he was the principal co-consecrator of:
Onorato Onorati, Bishop of Urbania e Sant'Angelo in Vado (1636);
Urbano Zambotti, Bishop of Montemarano (1640);
Vencent Cavaselice, Bishop of Carinola (1640); and
Gregorio Panzani, Bishop of Mileto (1640).

References

External links and additional sources
 (for Chronology of Bishops)
 (for Chronology of Bishops)

17th-century Italian Roman Catholic archbishops
Bishops appointed by Pope Urban VIII
1597 births
1645 deaths
Martin Morrissey may refer to:

 Marty Morrissey (born 1958), Irish sports commentator and television presenter
 Martin Óg Morrissey (born 1934), Irish former sportsperson
Jean-Louis Bernard Barrault (; 8 September 1910 – 22 January 1994) was a French actor, director and mime artist who worked on both screen and stage.

Biography 
Barrault was born in Le Vésinet in France in 1910. His father was 'a Burgundian pharmacist who died in the First World War.':87 He studied at the Collége Chaptal until 1930, when he began his studies at the École du Louvre.:87

Theatre 
From 1931 to 1935 Barrault studied and acted at Charles Dullin's L'Atelier.:32 His first performance was a small role in Ben Jonson's Volpone. At the time, Barrault was unable to afford rent and Dullin allowed him to sleep in the theatre on Volpone's bed.:16 It was L'Atelier that he first met and studied under Étienne Decroux,:41 with whom he would create the pantomime La Vie Primitive in 1931.:87

He was a member of the Comédie-Française from 1942 to 1946, performing lead roles in Shakespeare's Hamlet and Corneille's Le Cid.:32 He and his wife, actress Madeleine Renaud, formed their own troupe, Compagnie Renaud-Barrault, in 1946 at Paris' Théâtre Marigny.:161 In 1951 he published his memoirs, Reflections on the Theatre.

He was made director of Théâtre de France in 1959, and remained in the role until 1969. In 1971 he was reappointed director of Théâtre des Nations. He retired from theatre in 1990.:87

Film 
In 1935 he had his first film role in Marc Allégret's Les Beaux Jours.:87 He would go on to act in nearly 50 movies over the course of his career. One of his most famous performances was in Marcel Carné's film Les Enfants du Paradis (1945), in which he played the mime Jean-Gaspard Deburau.:161

He was the uncle of actress Marie-Christine Barrault and sometime sponsor of Peter Brook. In 1940, he married the actress Madeleine Renaud. They founded a number of theaters together and toured extensively, including in South America.

Barrault died from a heart attack in Paris on January 22, 1994, at the age of 83.:87 He is buried with his wife Renaud in the Passy Cemetery in Paris.

Filmography

References

External links

 
 
Barrault Photo Collection

1910 births
1994 deaths
Burials at Passy Cemetery
French film directors
French mimes
People from Le Vésinet
Sociétaires of the Comédie-Française
French male stage actors
French male film actors
Special Tony Award recipients
20th-century French male actors