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Quehanna Wild Area
Quehanna Wild Area () is a wildlife area within parts of Cameron County, Pennsylvania, Cameron, Clearfield County, Pennsylvania, Clearfield and Elk County, Pennsylvania, Elk counties in the U.S. state of Pennsylvania; with a total area of , it covers parts of Elk State Forest, Elk and Moshannon State Forests. Founded in the 1950s as a nuclear physics, nuclear research center, Quehanna has a legacy of radioactive waste, radioactive and toxic waste contamination, while also being the largest List of Pennsylvania state forest wild areas, state forest wild area in Pennsylvania, with herds of elk. The wild area is bisected by the Quehanna Highway and is home to second growth forest with mixed hardwood forest, hardwoods and evergreens. Quehanna has two state forest natural areas: the Wykoff Run Natural Area, and the Marion Brooks Natural Area. The latter has the largest stand of Betula papyrifera, white birch in Pennsylvania and the eastern United States. The land that became Quehanna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Papyrifera
''Betula papyrifera'' (paper birch, also known as (American) white birch and canoe birch) is a short-lived species of birch native to northern North America. Paper birch is named for the tree's thin white bark, which often peels in paper like layers from the trunk. Paper birch is often one of the first species to colonize a burned area within the northern latitudes, and is an important species for moose browsing. The wood is often used for pulpwood and firewood. Description It is a medium-sized deciduous tree typically reaching tall, and exceptionally to with a trunk up to in diameter. Within forests, it often grows with a single trunk but when grown as a landscape tree it may develop multiple trunks or branch close to the ground. Paper birch is a typically short-lived species. It handles heat and humidity poorly and may live only 30 years in zones six and up, while trees in colder-climate regions can grow for more than 100 years. ''B. papyrifera'' will grow in many so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wykoff Run Natural Area
Wykoff Run Natural Area is a state forest natural area in the Elk State Forest in Gibson Township, Cameron County in the U.S. state of Pennsylvania. The natural area is in the center of Quehanna Wild Area Quehanna Wild Area () is a wildlife area within parts of Cameron County, Pennsylvania, Cameron, Clearfield County, Pennsylvania, Clearfield and Elk County, Pennsylvania, Elk counties in the U.S. state of Pennsylvania; with a total area of , it co .... It was once home to two jet engine testing cells, when the area was a research facility for Curtiss-Wright Corporation from 1955 to 1960. Note: this includes four chapters on sites within the Quehanna Wild Area, Marion Brooks Natural Area (3), Beaver Run Dam Wildlife Viewing Area (4), Hoover Farm Wildlife Viewing Area (5), and Wykoff Run Natural Area (6). References {{Protected Areas of Pennsylvania Protected areas of Cameron County, Pennsylvania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radionuclide
A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess nuclear energy, making it unstable. This excess energy can be used in one of three ways: emitted from the nucleus as gamma radiation; transferred to one of its electrons to release it as a conversion electron; or used to create and emit a new particle (alpha particle or beta particle) from the nucleus. During those processes, the radionuclide is said to undergo radioactive decay. These emissions are considered ionizing radiation because they are energetic enough to liberate an electron from another atom. The radioactive decay can produce a stable nuclide or will sometimes produce a new unstable radionuclide which may undergo further decay. Radioactive decay is a random process at the level of single atoms: it is impossible to predict when one particular atom will decay. However, for a collection of atoms of a single nuclide the decay rate, and thus the half-life (''t''1/2) for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Cell
Shielded nuclear radiation containment chambers are commonly referred to as hot cells. The word "hot" refers to radioactivity. Hot cells are used in both the nuclear-energy and the nuclear-medicines industries. They are required to protect individuals from radioactive isotopes by providing a safe containment box in which they can control and manipulate the equipment required. Nuclear industry Hot cells are used to inspect spent nuclear fuel rods and to work with other items which are high-energy gamma ray emitters. For instance, the processing of medical isotopes, having been irradiated in a nuclear reactor or particle accelerator, would be carried out in a hot cell. Hot cells are of nuclear proliferation concern, as they can be used to carry out the chemical steps used to extract plutonium (whether weapons grade or not) from reactor fuel. The cutting of the used fuel, the dissolving of the fuel in hot nitric acid and the first extraction cycle of a nuclear reprocessin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Engine
A jet engine is a type of reaction engine discharging a fast-moving jet of heated gas (usually air) that generates thrust by jet propulsion. While this broad definition can include rocket, Pump-jet, water jet, and hybrid propulsion, the term typically refers to an internal combustion airbreathing jet engine such as a turbojet, turbofan, ramjet, or pulse jet engine, pulse jet. In general, jet engines are internal combustion engines. Airbreathing jet engines typically feature a Axial compressor, rotating air compressor powered by a turbine, with the leftover power providing thrust through the propelling nozzle—this process is known as the Brayton cycle, Brayton thermodynamic cycle. Jet aircraft use such engines for long-distance travel. Early jet aircraft used turbojet engines that were relatively inefficient for subsonic flight. Most modern subsonic jet aircraft use more complex High-bypass turbofan, high-bypass turbofan engines. They give higher speed and greater fuel eff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curtiss-Wright
The Curtiss-Wright Corporation is a manufacturer and services provider headquartered in Davidson, North Carolina, with factories and operations in and outside the United States. Created in 1929 from the consolidation of Curtiss, Wright, and various supplier companies, the company was immediately the country's largest aviation firm and built more than 142,000 aircraft for the U.S. military during World War II. Today, it no longer makes aircraft but makes many related components, particularly actuators, aircraft controls, valves, and surface-treatment services. It also supplies the commercial, industrial, defense, and energy markets; it makes parts for commercial and naval nuclear power systems, industrial vehicles, and oil- and gas-related machinery. History Merger and expansion Curtiss-Wright formed on July 5, 1929, the result of a merger of 12 companies associated with Curtiss Aeroplane and Motor Company of Buffalo, New York, and Wright Aeronautical of Dayton, Ohio. It wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Civilian Conservation Corps
The Civilian Conservation Corps (CCC) was a voluntary government work relief program that ran from 1933 to 1942 in the United States for unemployed, unmarried men ages 18–25 and eventually expanded to ages 17–28. The CCC was a major part of President Franklin D. Roosevelt's New Deal that supplied manual labor jobs related to the conservation and development of natural resources in rural lands owned by federal, state, and local governments. The CCC was designed to supply jobs for young men and to relieve families who had difficulty finding jobs during the Great Depression in the United States Robert Fechner was the first director of this agency, succeeded by James McEntee following Fechner's death. The largest enrollment at any one time was 300,000. Through the course of its nine years in operation, three million young men took part in the CCC, which provided them with shelter, clothing, and food, together with a wage of $30 (equivalent to $1000 in 2021) per month ($25 of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Pennsylvania State Forests
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing (di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearcutting
Clearcutting, clearfelling or clearcut logging is a forestry/ logging practice in which most or all trees in an area are uniformly cut down. Along with shelterwood and seed tree harvests, it is used by foresters to create certain types of forest ecosystems and to promote select species that require an abundance of sunlight or grow in large, even-age stands. Logging companies and forest-worker unions in some countries support the practice for scientific, safety and economic reasons, while detractors consider it a form of deforestation that destroys natural habitats and contributes to climate change. Clearcutting is the most common and economically profitable method of logging. However, it also may create detrimental side effects, such as the loss of topsoil, the costs of which are intensely debated by economic, environmental and other interests. In addition to the purpose of harvesting wood, clearcutting is used to create land for farming. Ultimately, the effects of clearcutt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virgin Forest
''Virgin Forest'' is a 1985 Filipino period film directed by Peque Gallaga. A self-described B-movie, it stars Sarsi Emmanuel, who plays a barrio lass of Chinese ancestry; Miguel Rodriguez, as a Filipino-Spanish illustrado; and, Abel Jurado, who plays the lover of Sarsi's character. Plot The film is set in the 1900s during the First Philippine Republic. Macabebe soldiers are trying to capture Emilio Aguinaldo. Alfonisto ( Miguel Rodriguez) and Chayong ( Sarsi Emmanuel) are caught up in this pursuit and in a love triangle. In the end, Aguinaldo is captured and the Macabebe soldiers are killed. Cast * Sarsi Emmanuel as Chayong * Miguel Rodriguez as Alfonsito *Abel Jurado as Alipio *Jude Arboleda as Fonseca *Arbie Antonio as Lt. Dalmacio *Turko Cervantes and Pen Medina as leaders of the Macabebes *Peque Gallaga Maurice Ruiz de Luzuriaga Gallaga (August 25, 1943 – May 7, 2020), better known as Peque Gallaga, was a multi-awarded Filipino people, Filipino film-maker. His most s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logging
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain that provides raw material for many products societies worldwide use for housing, construction, energy, and consumer paper products. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions, though their efficiency for these purposes has been challenged. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. In common usage, however, the term may cover a range of forestry or silviculture activities. Illegal logging refers to the harvesting, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be illegal, includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Pennsylvania
The history of Pennsylvania stems back thousands of years when the first indigenous peoples occupied the area of what is now Pennsylvania. In 1681, Pennsylvania became an English colony when William Penn received a royal deed from King Charles II of England. Although European activity in the region precedes that date (the area was first colonized by the Dutch in 1643). The area was home to the Lenape, Susquehannocks, Iroquois, Erie, Shawnee, Arandiqiouia, and other American Indian tribes. Most of these tribes were driven off or reduced to remnants as a result of diseases, such as smallpox. The English took control of the colony in 1667. In 1681, William Penn, a Quaker, established a colony based on religious tolerance; it was settled by many Quakers along with its chief city Philadelphia, which was also the first planned city. In the mid-1700s, the colony attracted many German and Scots-Irish immigrants. Pennsylvania played a central role in the American Revolution, and Philad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
