omniomni/omni-engineering huggingface dataset:
William A. Massey (mathematician). William Alfred Massey is an American mathematician and operations researcher, the Edwin S. Wilsey Professor of Operations Research and Financial Engineering at Princeton University. He is an expert in queueing theory.

Biography
Massey was born in Jefferson City, Missouri in 1956, the son of Juliette and Richard Massey Sr., both educators.
His family moved to St. Louis, Missouri when he was four. He went to college at Princeton University, graduating in 1977. Massey obtained his Ph.D. from Stanford University in 1981, with a thesis on queueing theory supervised by Joseph Keller. His first research publication was developed during a summer program at Bell Laboratories while he was a graduate student and was published in 1978. After earning his doctorate, he became a permanent staff member at Bell Labs. In 2001, Massey moved to his current position at Princeton, becoming the first African-American Princeton undergraduate alumnus to return as a faculty member.

Awards and honors
In 2006, Massey won the Blackwell–Tapia Prize of the Institute for Mathematics and its Applications for his "outstanding record of achievement in mathematical research and his mentoring of minorities and women in the field of mathematics". He was elected to the 2006 class of Fellows of the Institute for Operations Research and the Management Sciences. In 2012 he became a fellow of the American Mathematical Society. Massey's accomplishments have earned him recognition by Mathematically Gifted & Black as a Black History Month 2018 Honoree.

References

External links
http://www.princeton.edu/~wmassey/ William A Massey Profile

Living people
21st-century African-American academics
21st-century American academics
Princeton University alumni
Princeton University faculty
Fellows of the American Mathematical Society
Fellows of the Institute for Operations Research and the Management Sciences
Mathematicians from Missouri
People from Jefferson City, Missouri
Scientists from St. Louis
Stanford University alumni
1956 births
20th-century African-American academics
20th-century American academics
Hınıs Başköy Dam. Hınıs Başköy Dam is a dam in Turkey. The development was backed by the Turkish State Hydraulic Works.

See also
List of dams and reservoirs in Turkey

References
DSI directory, State Hydraulic Works (Turkey), Retrieved December 16, 2009

Dams in Erzurum Province

tr:Hınıs Başköy Barajı
Obruk Dam. Obruk Dam is an embankment dam on the Kızılırmak River in Çorum Province, Turkey. Constructed between 1996 and 2007, the development was backed by the Turkish State Hydraulic Works. The dam supports a 203 MW power station.

See also

List of dams and reservoirs in Turkey

References

External links
DSI, State Hydraulic Works (Turkey), Retrieved December 16, 2009

Dams in Çorum Province
Hydroelectric power stations in Turkey
Dams completed in 2007
Kızılırmak
Örenler Dam. Örenler Dam is a dam in Afyonkarahisar Province, Turkey, built between 1987 and 1993. The development was backed by the Turkish State Hydraulic Works.

See also
List of dams and reservoirs in Turkey

References
DSI directory , State Hydraulic Works (Turkey), Retrieved December 16, 2009

Dams in Afyonkarahisar Province
Seyitler Dam. Seyitler Dam is a dam in Afyonkarahisar Province, Turkey, built between 1960 and 1964. The development was backed by the Turkish State Hydraulic Works.

See also
List of dams and reservoirs in Turkey

References
DSI directory , State Hydraulic Works (Turkey), Retrieved December 16, 2009

Dams in Afyonkarahisar Province
Tilt tray sorter. A tilt-tray sorter is a mechanical assembly similar to a conveyor belt but instead of a continuous belt, it consists of individual trays traveling in the same direction.

A tilt-tray sorter can be configured in an inline (AKA over/under) formation, or in a continuous-loop.

Items are loaded onto the passing trays at the front end of the sorter and travel towards a series of destinations on either side of the sorter. Items are loaded on to trays individually and their sort destination is determined in advance.

As the tray with an item approaches its destination the tray is tilted to slide the object into the chute. The empty tray will then return to the load section before it is loaded again with a new item.

A tilt-tray sorter is a continuous-loop sortation conveyor that uses a technique of tilting a tray at a chute to slide the object into the chute.

References

Industrial machinery
Hirth F-23. The Hirth F-23 is a twin cylinder, horizontally-opposed, two stroke, carburetted or optionally fuel injected aircraft engine designed for use on ultralight aircraft. It is manufactured by Hirth of Germany.

Development
The F-23 is intended to compete with the  Rotax 503 and is differentiated from the Rotax powerplant by offering a horizontally-opposed cylinder layout. The F-23 uses free air cooling and piston-ported induction, with dual Bing 34mm slide or optional diaphragm type carburetors. The cylinder walls are electrochemically coated with Nikasil. Standard starting is recoil start. A belt reduction drive system, fuel injection, tuned exhaust and electric start are optional.

The engine runs on a 50:1 pre-mix of unleaded 93 octane auto fuel and oil. Recommended time between overhauls is 1000 hours.

The F-23 produces  at 6150 rpm and  at 5500 rpm.

Applications

Specifications (F-23)

References

External links

Hirth aircraft engines
Air-cooled aircraft piston engines
Two-stroke aircraft piston engines
Material ConneXion. Material ConneXion is a materials consultancy, headquartered in New York City, New York.

History 
In 1997, Material ConneXion was launched by George Beylerian, former vice president of marketing and creative director of Steelcase Furniture. At Steelcase, Beylerian created a small exhibition of new materials, and recognized the need for a materials library service.

Material ConneXion was acquired by SANDOW in 2011.
 
In addition to its New York office, the company has locations in Bangkok, Daegu, Milan, and Skövde, and also maintains an online materials database.

Material ConneXion maintains a physical library of over 10,000 materials and processes categorized based on their chemical composition: Polymers, Naturals, Metals, Glass, Processes, Ceramics, Cement-based, Carbon-based.

In 2016, the American Society of Interior Designers (ASID) opened a Material ConneXion Library at its corporate headquarters in Washington, D.C., in partnership with the American Chemistry Council (ACC). The library features samples of innovative materials and products with an emphasis on health and wellness in the built environment.

Notable Projects 
Material ConneXion clients have included design and architecture firms, government agencies, and large corporations such as Adidas, Target Corporation, PUMA, and BMW.

In 2001, designer Sandy Chilewich discovered a woven vinyl material in Material ConneXion's library that led to her Chilewich brand of household products and accessories. The company also worked with designer Harry Allen to find a sustainable, low-cost, post-industrial polypropylene packaging material for Aveda’s Ukuru line of cosmetics. In 2004, Material ConneXion helped Nike source a monofilament sleeving normally used to protect PVC pipes from bursting for use in its Air Jordan XIX.

Through its partnership with McDonough Braungart Design Chemistry (MBDC) and the Environmental Protection and Encouragement Agency (EPEA), Material ConneXion is the only Materials Library in the world to feature Cradle to Cradle assessed and certified materials and the only materials consultancy to offer Cradle to Cradle Certification and Cradle to Cradle product development.

Critical reception 
In 2007, Material ConneXion was named a “Top Eco-Innovator” by The New York Times  for its efforts to make information on sustainable materials and sustainable design practices more readily available to designers and corporations.

References

Engineering consulting firms of the United States
Hirth F-263. The Hirth F-263 is a twin cylinder, in-line, two stroke, carburetted aircraft engine that was designed for use on ultralight aircraft.  It was manufactured by Hirth of Germany, but was discontinued about 2001.

Development
The F-263 uses fan cooling and piston-ported induction, with a single Bing carburetor and single capacitor discharge ignition. The cylinder walls are electrochemically coated with Nikasil. Standard starting is recoil start. A gearbox reduction drive system and electric start were factory options.

The engine produces  and runs on a 50:1 pre-mix of unleaded 93 octane auto fuel and oil. Recommended time between overhauls is 1000 hours.

Applications
Howland H-3 Pegasus
Falconar HM-293

Specifications (F-263)

See also

References

Hirth aircraft engines
Air-cooled aircraft piston engines
Two-stroke aircraft piston engines
Heavy Airlift Wing. The Heavy Airlift Wing (HAW) is an international military airlift organization based at Pápa Air Base, Hungary. The organization consists of several European states and the United States. It was officially activated on 27 July 2009 as part of the Strategic Airlift Capability (SAC) program, which purchased and operates three C-17 Globemaster III military transport aircraft that fly under the national markings of Hungary. The Heavy Airlift Wing is currently commanded by a Colonel from the Swedish Air Force, and is composed of up to 155 military personnel from the 12 participating states; Bulgaria, Estonia, Finland, Hungary, Lithuania, the Netherlands, Norway, Poland, Romania, Slovenia, Sweden, and the United States. Strategic Airlift Capability members send their personnel to work for the Heavy Airlift Wing on temporary or permanent positions.

The SAC members have requested missions in order to meet their obligations to employ/deploy/redeploy forces and equipment in support of national, UN, EU, NATO obligations, exercises, training and humanitarian relief, including the International Security Assistance Force 2009–2014, and the Resolute Support Mission, 2015–2021 in Afghanistan. Operation Unified Protector in Libya, 2011. United Nations Multidimensional Integrated Stabilization Mission in Mali, 2013–. The EUFOR RCA, 2014–2015. The United Nations Multidimensional Integrated Stabilization Mission in the Central African Republic, 2015–. The wing has also conducted missions to provide logistical support to the investigation of the 2014 Malaysia Airlines MH17 crash in Ukraine. Significant humanitarian operations supported by the wing include earthquake relief in Haiti, 2010, flood relief in Pakistan, 2010, and hurricane relief to the island of Saint Martin, 2017.

The HAW is independent of any command by NATO, European Union, Partnership for Peace, United Nations, or any other organization that HAW member states belong to or support in the various missions. It is overseen by the SAC Steering Board, which manages its activities with support of NATO Airlift Management Programme Office (NAM PO). The SAC sets requirements and the NAM PO executes those requirements by sourcing the majority of the technical, logistic, and training support to the C-17 fleet from the United States and its military and Foreign Military Sales (FMS) programs, including C-17 maintenance which are contracted with Boeing.

See also
European Air Transport Command
European Air Group
European Personnel Recovery Centre

References

External links 

Strategic Airlift Capability
NATO Airlift Management Programme

Multinational air units and formations
Military units and formations established in 2009
Collective Hardware. Collective Hardware is an artist collective based in New York City. Located at 169 Bowery, Collective Hardware members work in print media, fashion, film production and editing, music creation and engineering, hair styling, and more.

Black Book Magazine offers this description:

Hard-to-define, hard-to-leave, multi-faceted Bowery building hell-bent on artistic expression. One-of-a-kind designer, couture goods can be had on one floor, show room for art (sound installations, giant photographs, and other visually engaging material) on another, recording studios, special effects, hair stylist, you name it on the rest. Sub-Delancey hive of creative expression buzzes with international and local scene-making artists, musicians, actors, and others in the mix. Special guests get a signature Stu Bronz rant for the road before they break.

The collective was evicted from 169 Bowery in May 2010 after failing to pay $1 million in back rent.

References

American artist groups and collectives
Arts organizations based in New York City
Organizations based in Manhattan
Green Pine (communications). The Green Pine UHF communications system was designed to relay Strategic Air Command (SAC) Emergency Action Messages (EAMs) to SAC aircraft. Green Pine was designed in 1967. Each Green Pine station was equipped with a variety of communications systems, to ensure that nuclear command and control messages would reach nuclear strategic bombers in Northern latitudes.

Locations
 Adak, Alaska
 Naval Station Argentia, Newfoundland
 Barter Island
 Cambridge Bay
 Cape Dyer
 Cape Parry
 Cold Bay
 Dye 3
 Hall Beach
 Melville
 Keflavik, Iceland
 Point Barrow
 Thule, Greenland

See also
 Survivable Low Frequency Communications System (SLFCS)
 Post Attack Command and Control System (PACCS)
 Ground Wave Emergency Network (GWEN)
 Minimum Essential Emergency Communications Network (MEECN)
 Emergency Rocket Communications System (ERCS)

References

External links
 Green Pine System: Loring AFB, Maine

Military radio systems of the United States
Military communications of the United States
United States nuclear command and control
Johannite. Johannite is a rare uranium sulfate mineral. It crystallizes in the triclinic crystal system with the chemical composition Cu[UO2(OH)SO4]2·8H2O. It crystallizes in the triclinic system and develops only small prism or thin to thick tabular crystals, usually occurs as flaky or spheroidal aggregates and efflorescent coatings. Its color is emerald-green to apple-green and its streak is pale green.

Johannite is a strong radioactive mineral with a calculated activity of 87,501,143 Bq/g (to the comparison: natural potassium: 31.2 Bq/g).

Etymology and history 
Johannite was first described in 1830 by Wilhelm Karl Ritter von Haidinger. It was named for Archduke John of Austria (1782–1859), the founder of the Landesmuseum Joanneum (Styria, Austria).

Occurrence 
Johannite forms as secondary mineral by oxidation from uraninite as well as different other uranium minerals.

Localities include Argentina, Czech Republic, France, Gabon, Germany, Greece, Italy, Switzerland, United Kingdom and the United States. Type locality is the “Elias Mine” in Jáchymov (Czech Republic).

Crystal structure 
Johannite crystallizes in the triclinic crystal system in the space group P with the lattice parameters a = 8.92 Å, b = 9.59 Å, c = 6.84 Å; α = 110°, β = 111.98°, γ = 100.3° and one formula unit per unit cell.

References

Bibliography
Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 606-607.

Copper(II) minerals
Uranium(VI) minerals
Sulfate minerals
Triclinic minerals
Minerals in space group 2
NAL NM5. NM5 or C-NM5 was an indian multi-role, multi-mission aircraft being jointly developed by National Aerospace Laboratories (NAL) and Mahindra Aerospace. It is a 5-seater civil aircraft and an extension of the Hansa project. The NM5 was entirely designed and developed by NAL and Mahindra Aerospace on a 50:50 partnership basis. The NM5 can be used as a trainer, for transporting cargo, medical evacuation, tourism, VIP travel and for training pilots.

General Aviation aircraft programme
This new 4/5 passenger General Aviation aircraft programme was launched as a part of the 10th FYP network programme. Following the successful certification of HANSA-3, NAL proposed the development of a 5-seater general aviation aircraft to be carried out during the 10th Plan. However the proposal was approved only in May 2005 and thus spilled over into the 11th Plan. Work on preliminary design of the aircraft commenced in October 2006.

Private Public Partnership
This programme is unique in the sense that NAL has started work for creation of an airplane, in equal partnership with a private production agency cum development partner, M/s Mahindra Plexion Technologies Private Ltd., a unit of the reputed Mahindra & Mahindra industrial house. NAL signed an MoU with M/s Mahindra Plexion Pvt Ltd (MP) to jointly develop the 5 seater  general aviation aircraft, NM5  and to undertake its production and marketing. It is one of the recent public-private partnership programmes in aircraft design for NAL and in the civil aviation sector in India.

Public Appearance
At the Indian Civil Aviation Airshow (2008) held at Begumpet Airport, Hyderabad between 15–18 October 2008, the 5 seat NM5 aircraft (general aviation aircraft) attracted a lot of interest in business visitors and the general public. The NM5  was exhibited during Aero India for people to see. The NM5 and the Saras models were the biggest attractions in seventh edition in the 160 square metre Indian stall at the Aero India was held from February 11–15, 2009.

Prototype
The engine, propeller and certified seats of the aircraft have been imported also the raw material like aluminium alloy sheets and hardware such as, nuts, bolts, washers and rivets. Prototypes of NM-5 are ready and the certification will take a year. The Directorate General of Civil Aviation is expected to certify the aircraft by December next year. The first prototype of the 5-seater civil aircraft made its maiden flight on 1 September 2011 at GippsAero's flight testing facilities near Melbourne, Australia.

Price
An NM-5 is expected to be priced around $400,000; between Rs 1.2 crore and Rs 1.4 crore. M&M intended to start sale of aircraft by the middle of the year 2010. However, besides the prototype no further planes were made. According to the Australian CASA website, only one NM5 appears to have been registered in 2011, VH XNM. There are no certification details listed for the aircraft. 
European EASA has no mention of a type certificate for the aircraft.

See also
 Mahindra Aerospace
 National Aerospace Laboratories

References 

NM5
Claes Adelsköld. Claes Adolf Adelsköld (7 September 1824 – 1 October 1907) was a Swedish civil engineer, railway engineer, author, Army officer and member of the upper house of the Parliament of Sweden.

Background 
Adelsköld was born at Nolhaga in Alingsås Municipality in Västra Götaland County, Sweden.
He was as a member of the noble Adelsköld family. His brother Carl Gabriel Adelsköld (1830–1914) was a noted painter.

Military and engineering 
He studied at Chalmers University of Technology in Gothenburg, serving in the Swedish Army's Göta Artillery Regiment and became a lieutenant in 1844 in the Värmland jäger regiment; in 1849 he participated in the creation of the first Swedish railway open to civilian use. In 1852, he became a lieutenant in the newly organized Civil Engineering Corps, and continued to advance in the Corps until taking leave in 1875, when he was elected a member of the Riksdag. 
With 26 years in railway and canal construction, in 1865 he had become an ombudsman for the Hjälmare kanal.

Political career 
In 1875, he was elected a member of the upper house of the Riksdag (which at that time was bicameral), in which he served until 1893: at first for Västerbotten County and later for Blekinge County. He was a supporter of free trade and showed particular interest in defense issues.

Personal life 
In 1867 he bought Steninge Palace (Steninge Slott) in Sigtuna Municipality, where he led an extensive social life with people that included Prince Oscar (the future Oscar II). He sold the castle in 1873 and in 1876 repurchased the traditional family property in Alingsås Municipality, where he built a manor house known as Nolhaga slott.

In 1870 he was elected to the Swedish Academy of Sciences, of which he became chairman in 1891. He died in Stockholm and was buried at Stadskyrkogården in Alingsås. Adelsköldsgatan near the railway station in Alingsås was named in his honor.

Partial bibliography 
En resa till Nordkap (1889) A trip to the North Cape
Äventyr under en resa till Bornholm (1892) Adventure during a trip to Bornholm 
Utdrag ur mitt dagsverks, o. pro diverse konto (2:a uppl. i fyra band, totalt 1764 sidor, Albert Bonniers Förlag, 1899-1901). Excerpts from my day-work (2nd edition in four volumes, totaling 1764 pages)
Karl den tolfte och svenskarne. En historisk studie (del 1-2, 1903). Charles the Twelfth and Swedish trees: A historical study 
Uttalanden i malmfrågan (1907) Statements on the ore issue 
Konung Gustaf Eriksson Wasa (1907) King Gustav Eriksson Vasa

References

1824 births
1907 deaths
People from Alingsås Municipality
Chalmers University of Technology alumni
19th-century Swedish nobility
Swedish Army officers
Members of the Första kammaren
Members of the Royal Swedish Academy of Sciences
Swedish civil engineers
Members of the Royal Society of Sciences and Letters in Gothenburg
19th-century Swedish politicians
19th-century Swedish military personnel

Pioneers of rail transport
Swedish people in rail transport
Pentachlorobenzene. Pentachlorobenzene (PeCB) is an aryl chloride and a five-substituted chlorobenzene with the molecular formula C6HCl5 which is a chlorinated aromatic hydrocarbon.  It consists of a benzene ring substituted with five chlorine atoms.  PeCB was once used industrially for a variety of uses, but because of environmental concerns there are currently no large scale uses of PeCB. Pentachlorobenzene is a known persistent organic pollutant (POP) and banned globally by the Stockholm Convention on Persistent Organic Pollutants in 2009.

Production
PeCB can be produced as a byproduct of the manufacture of carbon tetrachloride and benzene.  It is extracted by distillation and crystallization. The direct production of pure PeCB is not practical because of the simultaneous production of other chlorinated compounds. Since PeCB is generally produced in small quantities in the chlorination of benzene, it is also contained in other chlorobenzenes (dichlorobenzenes, trichlorobenzenes etc.)

Today, a majority of the PeCB released into the environment is a result of backyard trash burning and municipal waste incineration.

Uses
PeCB was used as an intermediate in the manufacture of pesticides, particularly the fungicide pentachloronitrobenzene. Pentachloronitrobenzene is now made by
the chlorination of nitrobenzene in order to avoid the use of PeCB.

PeCB was a component of a mixture of chlorobenzenes added to products containing polychlorinated biphenyls in order to reduce viscosity.  PeCB has also been used as a fire retardant.

Safety and regulation
PeCB is a persistent organic pollutant, allowing an accumulation in the food chain. Consequently, pentachlorobenzene was added in 2009 to the list of chemical compounds covered by the Stockholm Convention, an international treaty which restricts the production and use of persistent organic pollutants.  PeCB has been banned in the European Union since 2002.

PeCB is very toxic to aquatic organisms, and decomposes on heating or on burning with the formation of toxic, corrosive fumes including hydrogen chloride. Combustion of PeCB may also result in the formation of polychlorinated dibenzodioxins ("dioxins") and polychlorinated dibenzofurans.

See also
Chlorobenzenes—different numbers of chlorine substituents
Pentafluorobenzene
Pentachlorobenzenethiol

References

Chlorobenzenes
Persistent organic pollutants under the Stockholm Convention