omniomni/omni-engineering huggingface dataset:
HMS Tilbury (1918). HMS Tilbury  was a S-class destroyer of the British Royal Navy that served during the First World War.

The boat badge is in the shape of a boar and is in the collection of the National Maritime Museum.

Design and construction
The S-class were intended as a fast ( destroyer for service that would be cheaper than the large V-class destroyers that preceded them and so able to be ordered in large numbers. The ships were  long overall and  between perpendiculars, with a beam of  and a draught of . They displaced  normal and  deep load. Three Yarrow boilers fed Parsons geared steam turbines which drove two propeller shafts, and generated , giving the required 36 knot speed.

The design gun armament of the S-class was three  guns and a single 2-pounder (40 mm) "pom-pom" anti-aircraft gun. Torpedo armament was four  torpedo tubes in two twin rotating mounts on the ships' centreline and two  tubes at the break of the forecastle for easily aimed snap-shots in close action. The ship had a crew of 90 officers and men.

On 23 June 1917, the Admiralty placed an order for 36 S-class destroyers under the Twelfth War Programme as a follow-on to the 33 S-class destroyers ordered in May that year under the Eleventh War Programme. Tilbury, one of three S-class destroyers ordered from Swan Hunter in the  Twelfth War Programme, was laid down at their Wallsend shipyard in November 1917. She was launched on 17 June 1918 and completed on 17 September 1918.

Service
On commission, Tilbury was sent to the Mediterranean, and was at Mudros in the Aegean Sea at the end of the war. Tilbury continued as part of the Sixth Destroyer Flotilla in the Mediterranean Fleet through 1919. The Royal Navy had a surplus of modern destroyers following the First World War, and by October 1920, Tilbury was listed as in reserve at the Nore. In 1923, she was in reserve at Portsmouth and in June 1928 was in Maintenance Reserve at Rosyth.

Tilbury was sold to the shipbreakers Ward in February 1931 for scrapping at their Llanelly yard.

References

Bibliography

External links 
 Dreadnought project website

1918 ships
S-class destroyers (1917) of the Royal Navy
Ships built on the River Tyne
Rupsha Rail Bridge. Rupsha Railway Bridge is a railway bridge on Rupsha River . This bridge  connects Khulna with Port of Mongla by railway network. Bangladesh Railway and Indian Larsen & Toubro Limited signed an agreement to construct the bridge. The bridge total length   long.

Project details
Khulna-Mongla Railway Project was passed by ECNEC on 21 December 2010. This project is divided into three parts. First one is to construct the railway, second one is to build a bridge over Rupsha and third one is to construct the signaling system. Estimated cost of this project is 1,076.445 crore taka. The bridge has 7 nos. of 102.4m long Double Warren Open-web Truss Girders with 136 nos. of 32.2 m long Composite Plate Girders for Viaducts on either side. This project will be finished in 2024. STUP Consultants P Limited of India is the Engineering Consultants for Design and Construction Supervision Services. STUP Consultants got associated with this Project since 1 January 2018. The construction work of the bridge was completed on 25 June 2022.

Features
 Height:  from the land level.
 Number of Spans: 136 nos. of 32.2 m long Steel Composite Plate Girders on Viaduct on both end with 7 nos. of 102.4 m long Double Warren Type Truss Girders for the main bridge.
 Number of Piles: 1.0 m Dia 836 nos. of Piles for Viaducts and 2.5 m Dia 72 nos. of Piles for the main bridge and Fenders. Average length of 2.5 m dia pile for main bridge is about 65 m
 Number of Piers & Pier Caps: 136 + 8 = 144.

References

Railway bridges in Bangladesh
Bridges over the Rupsha
Greater Southern Waterfront. Greater Southern Waterfront is a future waterfront development project sited within the planning area of Bukit Merah, Singapore. At present, the area is occupied by the Tanjong Pagar and Brani terminals of the Port of Singapore, which will be moved to the Tuas Megaport by 2027.

In 2013, Prime Minister Lee Hsien Loong, announced that container port activities will be relocated from Tanjong Pagar, Keppel, Pulau Brani and Pasir Panjang to a consolidated port in Tuas. The relocation will release about 1,000 hectares of land and will be used for the development of the Greater Southern Waterfront.

Timeline
 Since 2021, the former Keppel Golf Course site is being redeveloped into a residential neighborhood with 9,000 HDB and private housing units, featuring waterfront promenades, greenery, and open spaces. Two old powerstations in Pasir Panjang will be repurposed as recreational and nightlife hubs.
 After the relocation of Tanjong Pagar, Keppel and Brani terminals to Tuas by 2027 Pulau Brani can be developed in line with Sentosa. New attractions similar to Universal Studios Sentosa are planned here. Plans are underway to rejuvenate Sentosa's beaches and enhance its nature and heritage trails.
 Once Pasir Panjang Port relocates in 2040 mixed-use developments will be built at this location.

References

Bukit Merah
Central Region, Singapore
Depot Road. Depot Road () is a subzone within the planning area of Bukit Merah, Singapore, as defined by the Urban Redevelopment Authority (URA). Its boundary is made up of the Ayer Rajah Expressway (AYE) in the north; Alexandra Road in the west; Depot Road in the south; and Henderson Road in the east.

"Depot Road" is also the name of a two-way road in the area. The subzone took its name from this road.

References

Bukit Merah
Central Region, Singapore
PixARK. PixARK is a survival video game that was released on March 27, 2018 in early access for Microsoft Windows. A spin-off of Ark: Survival Evolved, the game can be played in both single-player and multiplayer modes.

Gameplay
The player is on an island populated by over 100 different dinosaur species. These can be killed or tamed and ridden. In addition, the player must ensure their survival by mining resources, making objects, building structures and defending themselves against enemy animals and other players. The world is made up of individual voxels, so the player can manipulate and adapt the world by removing or adding blocks. The world has several areas such as jungle, desert and caves and is generated procedurally, so it is not prefabricated. Likewise, the quest system is procedural and always creates new challenges. In addition to the survival mode, the player can also focus on building in creative mode without being attacked and collecting resources.

Development and release
Snail Games announced a cooperation with Ark: Survival Evolved developer Studio Wildcard. The game was announced on January 25, 2018 with a trailer.

PixARK was released in March 2018 in an early-access version for Microsoft Windows and Xbox One. The full launch version was released on May 31, 2019 for Microsoft Windows and Xbox One along with versions for PlayStation 4 and Nintendo Switch.

References

2019 video games
Action-adventure games
Ark (series)
Multiplayer and single-player video games
Survival video games
Windows games
Nintendo Switch games
PlayStation 4 games
Snail Games games
Unreal Engine 4 games
Video game spin-offs
Video games about dinosaurs
Xbox One games
Hexamethylcyclotrisiloxane. Hexamethylcyclotrisiloxane, also known as D3 and D3, is the organosilicon compound with the formula . It is a colorless or white volatile solid. It finds limited use in organic chemistry. The larger tetrameric and pentameric siloxanes, respectively octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, are of significant industrial interest, whereas 1,000–10,000 tonnes per year of the trimer is manufactured and/or imported in the European Economic Area.

Structure and reactions
Hexamethylcyclotrisiloxane adopts a planar structure and is considered strained. It reacts with organolithium reagents to give, after hydrolysis, dimethylsilanols:

Safety and environmental considerations 
The LD50 for the related pentamer (D5) is >50 g/kg in rats.

See also
 Octamethylcyclotetrasiloxane (D4)
 Decamethylcyclopentasiloxane (D5)

References

Siloxanes
Norman Percy Allen. Norman Percy Allen  (5 June 1903 – 23 February 1972) was a British metallurgist.

Early life
He was born in Wrexham, North Wales, the son of accountant Sidney Edward Allen and educated at Burton-on-Trent Boys' Grammar School and Sheffield University, where he obtained an honours degree in metallurgy.

Career
He stayed on at Sheffield to carry out research into copper die-casting alloys, but in 1925 moved to Swansea University to work for three years on the porosity of copper and copper alloys, moving again in 1929 to Birmingham University to continue the work. He was awarded a D.Sc. by Birmingham University in 1934.

In 1933 he left the university to join Mond Nickel Company at their Birmingham research laboratory under Dr Leonard Bessemer Pfeil, where he stayed until 1945. During that time he worked on the development of highly alloyed nickel base materials Nimonic having high strength and high oxidation resistance at elevated temperatures which served a key role in the use of such alloys in the new jet engines.

In 1945, he joined the National Physical Laboratory (NPL) as Superintendent of the Metallurgy Division, where he stayed until his retirement in 1969. A major project there concerned the development of superconductors, their manufacture, use and ongoing development. Other projects involved the development of physical methods of analysis such as spectrographic analysis, chromatography, colorimetry, X-ray fluorescence and absorption spectrometry. In 1966 he was appointed Deputy Director of the NPL.

Honours and awards
He was elected a Fellow of the Royal Society in 1956 and elected President of the Institution of Metallurgists for 1961/62. He was invested as a Companion of the Order of the Bath (CB) in the 1966 Birthday Honours.

Private life
He died in 1972. He had married in 1929 Olive Williams, with whom he had 2 sons and a daughter,

References

1903 births
1972 deaths
People from Wrexham
Alumni of the University of Sheffield
British metallurgists
Academics of the University of Birmingham
Companions of the Order of the Bath
Fellows of the Royal Society
Scientists of the National Physical Laboratory (United Kingdom)
Carl Herakovich. Carl T. "Rocky" Herakovich (born August 6, 1937) is an American retired engineering professor, college football player, coach and official. He served as the head football coach at Rose Polytechnic Institute—now known as Rose-Hulman Institute of Technology—from 1962 to 1963, compiling a record of 3–13. Herakovich was the founding director of the NASA-Virginia Tech Composites Program at Virginia Tech and Director of Applied Mechanics and the Henry L Kinnier Professor of civil engineering at the University of Virginia. 

Herakovich played football at Rose Poly as a halfback. He led the nation in scoring in 1958 with 168 points in eight games. The 168 points was the most scored by a college football player in a season since 1926, when Mayes McLain tallied 253 points for Haskell. Herakovich graduated from Rose Poly in 1959. He was a graduate student, research assisatnt, and assistant instructor in the engineering mechanics department at the University of Kansas when he was hired, in 1962, as head football coach at his alma mater, succeeding Max Kidd.

Head coaching record

References

1937 births
Living people
Illinois Institute of Technology alumni
Rose–Hulman Fightin' Engineers athletic directors
Rose–Hulman Fightin' Engineers football coaches
Rose–Hulman Fightin' Engineers football players
University of Kansas alumni
University of Virginia faculty
Virginia Tech faculty
Sportspeople from East Chicago, Indiana
People from Whiting, Indiana
Coaches of American football from Indiana
Players of American football from Indiana
National Institute of Technology (Chittagong). National Institute of Technology (NIT) is a private polytechnic institute in Muradpur, Chittagong, Bangladesh. It offers a four-year diploma in engineering under BTEB. It was established 1999.

In 2003, it was granted autonomy and became the National Institute of Technology Chittagong, under the Ministry of Education, Government of Bangladesh.

NIT Chittagong offers undergraduate and graduate programs in various engineering disciplines, and also offers postgraduate programs in engineering, management, and computer applications.

References 

Universities and colleges in Chittagong
Unu (company). Unu  (commonly: unu) is a German manufacturer of electric scooters based in Berlin. In 2014, the company began offering three engine sizes. The vehicles are assembled in China and distributed in Germany, Austria, Switzerland, France and Netherlands.

History 

The company's co-founder, Pascal Blum, used an electric scooter during his stay (2012) in China and then came up with the idea of marketing such vehicles in Germany. Together with co-founder Elias Atahi, Blum founded the company in 2013 with the support of the Technical University of Munich. The company name refers to the term for "one" in Esperanto.

Design 
The electric drive motor is located in the rear wheel and can be configured with either 1kW, 2 kW or 3 kW engine. All three engines offer less than 4 kW power and a maximum speed of 45 km/h, putting the scooter in the EC vehicle class L1e (a moped). The vehicle can actively recharge the battery during braking. In 2020, company introduced a new model featuring Bosch hub motor mounted in the rear singled-sided swingarm and removable batteries made by LG. The 1.7 kWh and 10 kg (22 lb) batteries are rated for 50 km (31 mi) of range each. With space for two batteries, the electric scooter has a maximum range of 100 km (62 mi) with 3.4 kWh of battery capacity. The seat has been redesigned to fit two riders.

Market 
The unu-scooter is custom made on-demand for each customer, assembled in China and delivered to the customer a few weeks later. The scooters are sold on the Internet after customers arrange a viewing or test drive with a company representative. Only areas where partner workshops are located are able to order the scooter. This allows for convenient servicing.

After its introduction in Germany, sales were extended to Austria, Switzerland, and in 2016 to the Netherlands, where the scooter is also offered in a 25 km/h version, which, in the Netherlands, allows the rider to drive without a helmet and on bike paths.

See also
 List of scooter manufacturers

References

External links 

Scooter manufacturers
Manufacturing companies based in Berlin
Dixon rings. Dixon rings are a form of random packing used in chemical processing. They consist of a stainless steel mesh formed into a ring with a central divider, and are intended to be packed randomly into a packed column. Dixon rings provide a large surface area and low pressure drop while maintaining a high mass transfer rate, making them useful for distillations and many other applications.

Background

Packed columns 
Packed columns are used in a range of industries to allow intimate contact between two immiscible fluids which can be liquid/liquid or liquid/gas. The fluids are passed through in a countercurrent flow through a column.

Random column packing 
Random column packing used to characterize the maximum volume fraction of a solid object obtained when they are packed randomly. This method of packing has been used since the early 1820s; the types of packing used were originally made out of glass spheres. However, in 1850 they were replaced by a more porous pumice stone and pieces of coke.

In the early 20th century Friedrich Raschig realized the importance of a high void fraction and having the internal surface of the packing media take part in the mass transfer. He designed the Raschig ring, which was more effective than previous forms of random packing and became very popular. Raschig rings are usually built from ceramic or metal and provided a large surface area within the column for interaction between liquid and gas vapors.

The development of the Dixon ring 
In 1943 Dr Olaf George Dixon of ICI applied for a patent of a new product for column distillation. He used  stainless steel mesh instead of sheet steel in the Lessing ring in order to improve the pressure drop of the packed column (in fact, they were called "wire gauze Lessing rings" in a 1949 publication).

Application 

Dixon rings are used for mainly for laboratory distillation applications.

Performance principles 
The enhanced performance of the Dixon ring is based on liquid surface tension: when the mesh is wet its surface area increases greatly, with an accompanying increase in the rate of mass transfer. Dixon rings require pre-wetting (flow of liquid over the packed bed prior to starting the reaction flow). While this increases batch processing startup time, the increased performance of the Dixon ring overcomes this.

See also 
Random column packing
Fenske helices

References 

Chemical equipment
Distillation
Leonard Bessemer Pfeil. Leonard Bessemer Pfeil (13 March 1898 – 16 February 1969) was a British metallurgist.

Early life
Leonard Pfeil was born in London, the son of accountant Leopold Pfeil, and educated at St Dunstan's College, Catford and the Royal School of Mines, where he graduated with a BSc in 1921.

Career
Leonard Pfeil was first appointed a Junior Lecturer in Metallurgy in the newly formed Metallurgy Department of the University College of Swansea, where he worked on the metallographic problems of steel and was awarded a D.Sc by the University of London in 1927.

In 1930 he moved to Birmingham to work at the Mond Nickel Company as Assistant Manager of their Research and Development Department. A variety of projects on the use of nickel alloys were suspended during the Second World War in favour of military ones, particularly the development of heat resisting alloys for use in the newly developed gas turbine engines for aircraft. Manufacturing techniques for the successful Nimonic range of nickel alloys were significantly improved.

When the Whittle jet engine was conceived, the need was for a stronger version of the Nimonic alloy then under development (Nimonic 75). Accordingly, Nimonic 80 was developed and the manufacturing difficulties overcome to the point where an experimental jet plane (E28) with a Whittle engine (Power Jets W.2B) could be flown in 1942, easily outperforming conventional piston-engined fighters. Other projects included the development of diffusion membranes for the separation of uranium isotopes. For his wartime contributions he was awarded the OBE in the 1947 New Year Honours.

After the war Pfeil moved to London as manager of Mond's Research and Development Department to continue his work on Nimonic alloys, becoming a director of Henry Wiggin and Co in 1946 and a director of Mond Nickel in 1951. He served on many official and institutional advisory committees and as President of the Institution of Metallurgists for 1953/54 and of the Institute of Metals for 1957. In 1960 he became Vice-Chairman of International Nickel Limited, the United Kingdom branch of the parent firm, holding the post until his retirement in 1963. He was elected a Fellow of the Royal Society in 1951.

Leonard Pfeil died in 1969. He had married Olive Williams in 1929 and had two sons.

References

1898 births
1969 deaths
Scientists from London
British metallurgists
Officers of the Order of the British Empire
Fellows of the Royal Society
People from Catford
Ephraim Bagenda. Ephraim Kalyebara Bagenda is a Ugandan aeronautical engineer and business executive, who serves as the Director of Engineering and Maintenance at Uganda National Airlines Company, the revived national airline of Uganda, effective October 2019.

Before that, from January 2018, until October 2019, he served as the managing director and chief executive officer of Uganda's national airline. He assumed that position in 2018, having served as the Director of Maintenance and Engineering at Rwandair, until late 2017.

Education and training
Bagenda is a professional aircraft engineer.

Career
In 2017, he served as the Director of maintenance and engineering at Rwandair, serving there for nearly six years.

In 2018, he was appointed as the managing director and CEO of the revived national carrier, Uganda Airlines, although a different member of the team had been considered for the job.

In July 2018, while at the Farnborough Airshow, he signed two memoranda of understanding, with aircraft manufacturers for six jets to re-open the airline.

The first agreement was with Bombardier Commercial Aircraft of Canada for a firm purchase order of four CRJ900-ER aircraft at an estimated total price of US$190 million. The four jets will feature the Bombardier Atmosphère Cabin; Uganda Airlines being the first carrier to operate that type of aircraft on the African continent.

The second agreement was with the European aerospace conglomerate, Airbus SA for a firm purchase of two A330-800 aircraft, featuring the improved and fuel-efficient Rolls-Royce Trent 7000. The long-haul jets will feature three-class cabins with maximum capacity of 261 passengers, comprising 20 seats in Business Class, 28 in Premium Economy and 213 in Economy Class.

In October 2019, he was named director of engineering and maintenance at Uganda Airlines and was replaced as CEO in acting capacity by Cornwell Muleya.

See also
 Transport in Uganda
 List of airports in Uganda
 Michael Etyang

References

External links
 Website of Revived Uganda Airlines
 Uganda Airlines Orders Two A330neo

Living people
Year of birth missing (living people)
21st-century Rwandan businesspeople
Rwandan chief executives
National Highway 334A (India). National Highway 334A, commonly referred to as NH 334A is a national highway in  India. It is a spur road of National Highway 334. NH-334A traverses the states of Uttarakhand and Uttar Pradesh in India.

Route 
Purkazi, Laksar, Haridwar.

Junctions  

  Terminal near Purquazi.

See also 

 List of National Highways in India
 List of National Highways in India by state

References

External links 
 Rationalisation of Numbering Systems of National Highways, Department of Road Transport and Highways

National highways of India
National highways in Uttarakhand
National highways in Uttar Pradesh
Composite boson. A composite boson is a bound state of fermions such that the combination gives a boson. Examples include Cooper pairs, semiconductor excitons, mesons, superfluid helium, Bose–Einstein condensates, atomic bosons, and fermionic condensates. A composite particle containing an even number of fermions is a boson, since it has integer spin. These composite particle states have a symmetric wave function upon exchange of any pair of particles. The wave function is given by the permanent of single particle states for the non-interacting case.

See also 

 Composite fermion
 Boson

References

 University of Colorado (January 28, 2004). NIST/University of Colorado Scientists Create New Form of Matter: A Fermionic Condensate. Press Release.
 Rodgers, Peter & Dumé, Bell (January 28, 2004). Fermionic condensate makes its debut. PhysicWeb.
 Haegler, Philipp, "Hadron Structure from Lattice Quantum Chromodynamics", Physics Reports 490, 49-175 (2010) 

Bosons