omniomni/omni-engineering huggingface dataset:
RagWing RW19 Stork. The RagWing RW19 Stork is a family of two-seat, high wing, strut-braced, conventional landing gear, single-engine homebuilt aircraft designed by Roger Mann and sold as plans by RagWing Aircraft Designs for amateur construction.

The RW19 is a 75% scale replica of the Fieseler Storch Second World War German liaison aircraft. The RW19 is noted for its STOL performance, equal to or better than that of the original Storch. The claimed take-off run and landing roll are  due to a  stall speed.

Design and development
The RW19 was designed for the US experimental homebuilt aircraft category and was first flown in August 1997. It also qualifies as an Experimental Light-sport aircraft in the USA.

The airframe is constructed from wood and tube and covered with aircraft fabric. The landing gear is of conventional configuration. The aircraft's installed power range is  and the standard engine is the  2si 690, although the  Rotax 912UL engine has also been used.

The RW19 was originally available as a complete kit, less only the engine, but today is only offered as plans. The designer estimates it will take 600 hours to complete the aircraft, although other estimates run from 300 to 1500 hours.

Variants
RW19 Stork
Tandem seat version
RW20 Stork Side by Side
Side-by-side seating version, performance the same as the tandem seat version

Specifications (RW19)

See also

References

External links
Archive of the official website RW19
Archive of the official website RW20

Homebuilt aircraft
Light-sport aircraft
Single-engined tractor aircraft
High-wing aircraft
STOL aircraft
Aircraft first flown in 1997
RW19
Single-engined piston aircraft
Aircraft with fixed conventional landing gear
Heijmans. Heijmans N.V. is a major European construction-services business with Dutch-based headquarters.

History
The company was founded by Jan Heijmans in Rosmalen in 1923. It was first listed on the Amsterdam Stock Exchange in 1993.

Operations
The company has the following divisions:
Property development
Residential housing
Non-residential construction
Installation techniques
Infrastructure

Major projects
Major projects undertaken the company include ING House completed in 2002, the Western Scheldt Tunnel completed in 2003 and "The Blob" in Eindhoven completed in 2010.

References

External links
 

Construction and civil engineering companies established in 1923
Construction and civil engineering companies of the Netherlands
Dutch companies established in 1923
Wallis WA-120. The Wallis WA-120 is an experimental British autogyro developed by Ken Wallis.

Design and development
Following on from his family of single-seat autogyros former Royal Air Force aviator Wing Commander Ken Wallis developed a high-performance long-range variant with an enclosed cockpit. The WA-120, registered G-AYVO, was first flown on 13 June 1971. The autogyro is powered by a  Rolls-Royce Continental O-240-A piston engine driving a four-bladed pusher propeller.

Specification

See also

References

Notes

Bibliography

1970s British civil utility aircraft
Single-engined pusher autogyros
Aircraft first flown in 1971
Dean of Invention. Dean of Invention was a television show starring Dean Kamen and Joanne Colan that premiered on Planet Green on October 22, 2010. The two explored scientific breakthroughs around the world in a variety of fields including aviation, biotechnology, energy, nanotechnology and robotics. The goal of the show was to promote engineering and technology as fun, accessible, and important.

At commercial breaks, Dean Kamen made personal appeals for FIRST as a condition of his involvement with the show.

Episodes

Meet the Microbots 
"Meet the Microbots" was an exploration of nanotechnology and its applications to medicine.

Building the Bionic Body 
"Building the Bionic Body" explored advances in prosthetics and their use, especially by the US military.

Wired Brain 
"Wired Brain" investigated interfaces between the human brain and computers to eliminate handicaps such as muteness or paralysis.

Robot Revolution 
"Robot Revolution" discussed applications of robots to perform difficult or hazardous tasks in lieu of humans.

Gonzo for Guano 
"Gonzo for Guano" investigated potential energy production from excrement.

Forward Motion 
"Forward Motion" explored innovations in automobile technology including electric cars and driverless cars.

Future Flight 
"Future Flight" followed the pursuit of flying cars, including the Terrafugia Transition.

Re-Gen Revolution 
"Re-Gen Revolution" discussed the possibilities of improving organ donation by creating them artificially.

References

External links
 

Destination America original programming
2010 American television series debuts
2010 American television series endings
Aerotechnik A-70. The A-70 is a rotor kite that was sold by Aerotechnik.

Design and development

The A-70 was the first product of Aerotechnik, later merged and renamed Evektor-Aerotechnik. The A-70 was a towed rotor kite. The two seat variant placed seats in front of and behind the rotor mast.

Variants
Single seat and two seat variants were constructed.

Specifications Aerotechnik A-70

References

Rotor kites
12.7 cm/40 Type 89 naval gun. The 12.7 cm/40 Type 89 naval gun (40 Kokei Hachikyu Shiki 12 Senchi 7 Kokakuho) was a Japanese anti-aircraft (AA) gun introduced before World War II. It was the Imperial Japanese Navy's standard heavy AA gun during the war.

The Type 89 was adopted by the IJN on February 6, 1932, and was the primary anti-aircraft gun on new aircraft carriers, battleships and cruisers, most commonly installed in twin gun mounts. It was used as the primary armament of the Matsu-class destroyers. As IJN ships were upgraded in the 1930s and 1940s, older AA guns such as 8 cm/40 3rd Year Type naval gun and 12 cm/45 10th Year Type naval guns were replaced with Type 89s.

Notes

References

External links

 12.7 cm/40 Type 89 on navweaps.com

World War II naval weapons
Naval guns of Japan
127 mm artillery
Military equipment introduced in the 1930s
Dissolved gas flotation. Dissolved gas flotation (DGF) systems are used for a variety of applications throughout the world. The process floats solids, oils and other contaminants to the surface of liquids. Once on the surface these contaminants are skimmed off and removed from the liquids. Oil and gas production facilities have used flotation systems to remove oil and solids from their produced and processed water (wastewater) for many years. The relative density of candle wax is 0.93, hence objects made of wax float on water.

Process description
The keys to good separation are both gravity and the creation of millions of very small bubbles. Based on Stokes' law, the size of the oil droplet and density of the droplet will affect the rate of rise to the surface. The larger and lighter the droplet, the faster it will rise to the surface. By attaching a small gas bubble to an oil droplet, the density of the droplet decreases, which increases the rate at which it will rise to the surface. Therefore, the smaller the gas bubbles created the smaller the oil droplet floated to the surface. Efficient flotation systems need to create as many small bubbles as possible. 

The method in which the bubbles are introduced into the water stream and retention time are also important factors. The average retention time for a vertical unit is typically 4 to 5 minutes and 5 to 6 minutes for a horizontal unit.

DGF pump
The impeller in a DGF pump is designed with dual sides. One side is designed to drive the liquid like a normal centrifugal pump and the other side is designed to draw vapor into the pump and mix it with the liquid. In addition to the new impeller, a special seal was invented to extend the life of the pump. With these innovations the pump creates a sub-atmospheric pressure region within the pump's seal chamber. As the impeller draws in the vapor it is mixed with the liquid being pumped and compressed into micro-fine bubbles. Because of the close tolerance between the backvanes of the impeller and the backplate of the pump the vapor is sheared into fine bubbles and then they are compressed in the sub-atmospheric pressure region of the pump. These fine bubbles become dissolved into the liquid within the volute of the pump.

The result of this process provides similar size bubbles to a dissolved air flotation system. The backpressure valve on the discharge piping can regulate the bubble size in a DGF pump. The bubble size ranges from 50 down to 1 micrometer or less.

See also
API oil-water separator
Flotation process
Induced gas flotation
Industrial wastewater treatment
List of waste-water treatment technologies
Dissolved air flotation

References

Design and operation of Dissolved-Gas Flotation Equipment for the Treatment Of Oilfield Produced Brines M.C. Sport, Shell Oil Company, Journal of Petroleum Technology, Volume 22, Number 8, August 1970.

Oil refining
Flotation processes
Waste treatment technology
Wendebach Reservoir. Wendebach Reservoir () is an artificial lake with a surrounding recreation park (Erholungspark Wendebach) in the municipalities of Gleichen and Friedland, Lower Saxony, Germany, about 8 km south of Göttingen. It is a popular summer outing goal for residents and students of Göttingen. There is a swimming beach and dock. In addition, there are some park facilities such as a first-aid post, grills, a food stall and outhouses. The reservoir is used by anglers.

The reservoir was created in 1973 by the damming of the Wendebach stream, a tributary of the Leine, with an earth dam.  Original work on this flood control project began in 1967. Its surface area is up to 8.5 hectares.

In the summer of 2010, the Ministry for the Environment announced that the reservoir does not provide flood protection and that the dam is unstable and must be removed. Nevertheless, after political pressure, the situation was re-evaluated, and a removal of the top part of the dam has been declared adequate when combined with some re-building. As a result, the reservoir will be retained. The reworking of the dam ran from 2014 into 2015.  The facility was re-opened to the public on 7 June 2016.

References

External links
 Information and photographs about the reservoir at www.goest.de. Accessed 29 May 2011. 
 Nature trail information at www.goettingerland.de. Accessed 29 May 2011. 

Reservoirs in Lower Saxony
Parks in Germany
RWendebachReservoir
Asterane. Asteranes are members of a series of cage hydrocarbons consisting of two cycloalkane rings linked to each other by methylene groups. Each linking face is thus a cyclohexane, which has a boat conformation. They can be considered as homologues of the prismanes, but with a carbon linker between the faces rather than direct bonding. The molecules having triangular and square bases, [3]asterane and [4]asterane, have been synthesized and studied experimentally, and many higher members of the series have been studied using computer models. Modeling experiments predict that the highly symmetric geometry is no longer stable starting with [8]asterane.

References

Hydrocarbons
How Science Changed Our World. How Science Changed Our World is a 2010 BBC television documentary presented by Robert Winston (first broadcast on 23 December 2010 on BBC One). It focuses on ten scientific advances, which according to the producers, had the biggest impact on our lives. Viewers were asked to vote on their favourite advancement.

Breakthroughs 
 Combined oral contraceptive pill
 Microchip
 Magnetic resonance imaging
 Laser
 Biomechanics
 World Wide Web
 Big Bang theory (Robert Winston's choice)
 Human Genome Project
 Stem cell research
 In vitro fertilisation

Credits 
 Series Producer: Sophie Todd
 Presenter: Robert Winston
 Producer: Naomi Austin

External links 
 How Science Changed Our World at BBC
 Review at The Independent

Results of the Viewer Poll 
With 23000 votes.
 Microchip (37.3%)
 World Wide Web (18.7%)
 Stem cell research (14.3%)
 Human Genome Project (10%)
 Laser (6.2%)
 Big Bang theory (6.1%)
 Magnetic resonance imaging (3.9%)
 In vitro fertilisation (2.8%)
 Combined oral contraceptive pill (2.7%)
 Biomechanics (2.1%) 
(These results have not been confirmed but are deemed reliable.)

BBC television documentaries about science
Documentary films about science
2010 television specials
2010 in science
Pseudo palladium. Pseudo palladium (RhAg) is a binary alloy consisting of equal parts of rhodium (atomic number 45) and silver (atomic number 47) created using nanotechnology to create a far more homogeneous mixture than might be possible using more conventional methods.  This alloy exhibits properties of the intervening element palladium (atomic number 46).

History
The production of this alloy was first reported by Kyoto University Professor Hiroshi Kitagawa and his research team,  October 27, 2010. To make the new alloy, the Kyoto team used nanotechnology to "nebulise" the rhodium and silver and gradually mixed them with heated alcohol, with the two metals mixed stably at the atomic level.  The same team also produced alternatives to other kinds of rare metals.

Characteristics
The new alloy has similar properties to palladium, which is used as a catalyst to cleanse exhaust gas and absorbs large quantities of hydrogen.

Rhodium, palladium and silver have 45, 46, and 47 electrons, respectively, numbers that determine their chemical characterizations.

"The orbits of the electrons in the rhodium and silver atoms probably got jumbled up and formed the same orbits as those of palladium," Kitagawa said.

Applications
The alloy has similar properties to palladium, which is used in cars' emission-reducing catalytic converters as well as in computers, mobile phones, flatscreen TVs, and dentistry instruments.

Hydrogen storage is cited as one potential use, however, according to researchers, the pseudo palladium alloy has only one half of palladium's hydrogen storage capacity.

See also
 NaK

References

Palladium
Precious metal alloys
Silver compounds
Rhodium compounds
Maritime Industrial Services. Maritime Industrial Services Co. Ltd. Inc. is a Saudi Arabian engineering and contracting group providing a broad range of products and services to the energy sector. It is a subsidiary of Lamprell PLC.

MIS' business scope covers EPC, Fabrication, New Build, Rig Refurb, Tech Services (Operations & Maintenance) and Safety Services.

MIS' operational scope of work covers engineering, procurement, fabrication, construction, safety, operating and maintenance services to the oil, gas, petrochemical, energy, power generation and marine industries.

History

The company was founded in 1979. In 1985, the company moved its operations from Dubai to a yard in Sharjah, where it began manufacturing pressure vessels. That year also saw the acquisition of the Sunbelt Safety division.

By 1990, MIS had expanded into Engineering, Procurement, and Construction (EPC) services. In 2001, the company entered into a joint venture to establish MIS Arabia. The company continued to grow, securing its first New Build contract in 2006.

In 2007, MIS was listed on the Oslo Børs stock exchange, and in 2008, it acquired Rig Metals, which focused on onshore rig components. This expansion led to the delivery of its first rig in the Middle East in 2009 and the launch of EPI.

Further developments in 2010 included the start of Production Services, the acquisition of Litwin PEL, and a Memorandum of Understanding with Kavin Engineering. In 2012, MIS was acquired by Lamprell PLC, marking a new phase in its history.

Business Activities
MIS' business is based around six main value streams (business activities) but since 2008 has gained 4 more as acquisitions and start-ups.

Main Value Streams

Fabrication
EPC
New Build
Refurb
Tech Services
Sunbelt Safety

Acquisitions and Start-ups
Rig Metals: Rig Metals LLC was acquired by MIS in 2008. It has ten years' experience in the region providing oilfield related engineering and steel fabrication contracting services to the offshore and onshore rig industry.
EPI: was launched in 2010 and focuses on EPC and EPCM projects in markets such as Abu Dhabi, Saudi Arabia, Qatar, and Oman
Production Services: was established in 2010. It will be focusing on the provision of oil & gas production equipment and services for both onshore and offshore developments
Litwin PEL: was acquired by MIS in September 2010. It is an Abu Dhabi-based EPC and Engineering Services company catering to the Middle East and Africa Oil and Gas sector.

Operations
The company's operations span several markets: Sharjah UAE where the company has 200,000 m2 quayside facilities in Port Khalid; Kuwait, Qatar and Saudi Arabia under the name MIS Arabia (a joint venture). MIS' geographical footprint also covers Egypt, Kazakhstan and Iraq.

References

External links 
  MIS Website
 Rig Metals Website
 Litwin PEL Website
 Lamprell plc Website

Engineering companies of the United Arab Emirates
companies based in Dubai
Changheba Dam. The Changheba Dam () is a concrete rock-filled embankment dam on the Dadu River near Kangding in Sichuan Province, China. Initial construction on the dam began in 2006, before it was officially approved in December 2010 and impounded in 2016. Its power station was fully operational in December 2017. In July 2009, a landslide at the construction site killed four people while causing damage and temporarily blocking the river.

See also 

 List of power stations in China
 List of dams and reservoirs in China

References

Hydroelectric power stations in Sichuan
Dams in China
Concrete-face rock-fill dams
Dams on the Dadu River
Dams completed in 2016
Energy infrastructure completed in 2017
Jinanqiao Dam. The Jinanqiao Dam or Jin'anqiao Dam (, meaning "golden and peace bridge") is a concrete gravity dam on the Jinsha River  southeast of Lijiang City in Yunnan Province, China. The purpose of the dam is hydroelectric power production and flood control.

Construction
The Jinanqiao project was approved in August 2003 and construction began in 2005. By December of that year, the river was diverted and the construction of the actual dam began in January 2006. By February 2007, the foundation had been excavated and concrete pouring began. In June 2010, the dam's first generator was operational, the last was commissioned in 2011.

Design
The dam is a  tall and  long gravity dam composed of  of roller-compacted concrete. The dam's crest elevation is  above sea level and it withholds a  reservoir with a normal storage level of  ASL. Of the reservoir's storage,  is active or "useful". The dam's spillway consists of five  x  openings which have a maximum flood discharge capacity of .  To prevent scouring, the dam has a stilling basin at the foot of the spillway. The dam's power station sits at its toe and adjacent to the spillway. It is  long,  wide and  high. Four penstocks with a  diameter feed the 4 x 600 MW Francis turbine-generators which can discharge up to  after generation. Each Francis runner has a  diameter.

Because of high seismic activity in the area of the dam, special care was taken during design and construction to prepare the joints and foundation for sliding and tensile stress. Earthquake-resistant steel bars were installed in high-tensile areas, the construction joint was reduced to 2/3 its size and filled with non-woven fabrics along with the incorporation of a grouted joint between the dam and power plant.

See also 

 List of power stations in China

References

Hydroelectric power stations in Yunnan
Dams in China
Dams on the Jinsha River
Gravity dams
Dams completed in 2010
Roller-compacted concrete dams
Energy infrastructure completed in 2011
2011 establishments in China
Buildings and structures in Lijiang
Heinkel He 71. 

The Heinkel He 71 was a German single-seat monoplane, a smaller version of the two-seat Heinkel He 64. A low-wing monoplane with a fixed conventional landing gear, the prototype first flew with an open cockpit and a  Hirth HM 60 engine. It was later modified with an enclosed cabin and a  Hirth HM 4 engine. With additional fuel tanks to increase range it was used by German aviator Elly Beinhorn on a flight around Africa.

Specifications (He 71B)

References

Notes

Bibliography

1930s German sport aircraft
He 071
Low-wing aircraft
Aircraft first flown in 1933
Hans Ziegler (physicist). Hans Ziegler was born in Winterthur, Switzerland, on 5 September 1910, and died in Estes Park, Colorado, on 5 August 1985. He was raised and spent his early career in Switzerland but much of his later career in the United States.

Hans Ziegler was an academic and was the author of textbooks on engineering and thermodynamics, which were translated into other languages, and re-issued in new editions.

In non-equilibrium thermodynamics, he considered a 'principle of maximum dissipation rate'. He was also an early proponent of a 'principle of maximum rate of entropy production', which is closely related to a 'principle of maximum dissipation rate'. The range of applicability and validity or invalidity of these 'principles' has been examined and debated by many others, and their eventual scientific status is yet to be settled.

References

1910 births
1985 deaths
Swiss expatriates in the United States
Swiss physicists
Swiss science writers
Lee Yuk-wing. Lee Yuk-wing  (; April 14, 1904 – November 8, 1989) was a professor of electrical engineering at the Massachusetts Institute of Technology. He is best known for adapting and popularizing the pioneering work of Norbert Wiener and for his own research on statistical communication theory.

Biography
Lee was born in Macau, then part of the Portuguese Empire, and called “Yuwing” or “YW” by his friends. He was a longtime collaborator of Wiener. After obtaining his doctorate at MIT, he returned to China and taught at Tsinghua University. He invited Wiener there in 1935–1937. In 1946 he came back to MIT as a Visiting Professor and initiated his research on statistical communication theory. He then stayed at MIT for 30 years. John Costas, Harry L. Van Trees, Irwin Jacobs and Amar Bose were among his students at MIT. He lived in Belmont, California and died in San Mateo, California.

Publications
 Lee, Y.-W. (1932). Synthesis of electrical networks by means of the Fourier transforms of Laguerre's functions (Unpublished doctoral dissertation). Massachusetts Institute of Technology, Cambridge, MA. 
 Lee, Y.-W. (1950). Application of statistical methods to communication problems (Technical Report No. 181). Cambridge, MA: Research Laboratory of Electronics, Massachusetts Institute of Technology.
 Lee, Y.-W. (1960). Statistical theory of communication. New York: Wiley.

References
 Therrien, C. W. (2002). The Lee-Wiener legacy: Statistical theory of communication. IEEE Signal Processing Magazine, 19(6), 33-34.

External links 

1904 births
1989 deaths
Electrical engineering academics
Communication theorists
American electrical engineers
MIT School of Engineering faculty
Academic staff of Tsinghua University
20th-century American engineers
American people of Macanese descent
Macau scientists
People from Portuguese Macau
NJS. NJS may refer to

National Jet Systems, an Australian airline
Nihon Jitensha Shinkōkai (Japan Keirin Association), now replaced by the JKA Foundation
Nairobi Japanese School
 'NaJin Black Sword' a South Korean professional League Of Legends team, sponsored by NaJin Corporation
Naval Justice School
New Jersey Southern Railroad
Nurmijärven Jalkapalloseura, Finnish football club
New jack swing
 njs, an Nginx webserver module for extending the server's capabilities via JavaScript