omniomni/omni-engineering huggingface dataset:
Sodium selenide. Sodium selenide is an inorganic compound of sodium and selenium with the chemical formula Na2Se.

Preparation
This colourless solid is prepared by the reaction of selenium with a solution of sodium in liquid ammonia at −40 °C. Alternatively, sodium selenide can be prepared by the reaction of gaseous hydrogen selenide with metallic sodium at 100 °C.

Reactions
Like other alkali metal chalcogenides, this material is highly sensitive to water, easily undergoing hydrolysis to give mixtures of sodium biselenide (NaSeH) and hydroxide. This hydrolysis occurs because of the extreme basicity of the Se2− ion.

Na2Se + H2O → NaHSe + NaOH

Similarly, sodium selenide is readily oxidized to polyselenides, a conversion signaled by off-white samples.

Sodium selenide reacts with acids to produce toxic hydrogen selenide gas.

Na2Se + 2 HCl → H2Se + 2 NaCl

The compound reacts with electrophiles to produce the selenium compounds.  With alkyl halides, one obtains a variety of organoselenium compounds:
Na2Se  +  2 RBr   →   R2Se  +  2 NaBr

Organotin and organosilicon halides react similarly to give the expected derivatives:
Na2Se  +  2 Me3XCl   →   (Me3X)2Se  +  2 NaCl  (X ∈ Si, Ge, Sn)

References

Sodium compounds
Selenides
Fluorite crystal structure
NorGer. NorGer was one of two planned electricity cables between Germany and Norway. The other proposed project was NordLink, which Statnett decided to proceed with in 2015, and NorGer was cancelled.

Description
NorGer interconnector will start in Tonstad in Norway. From Tonstad  overhead powerline runs to the Flekkefjord area. From Flekkefjord a  long high voltage direct current submarine cable will run through the North Sea to Mooriem in Lower Saxony, Germany.  It will be laid on the Norwegian, German and Danish Continental Shelf.  The precise cable route is decided from a thorough mapping of the sea-bed along the prospective cable route.  The sea route is consulted by Offshore Marine Management.

NorGer will have a transmission capacity of 1,400 MW and an operating voltage of 450–500 kV. The price per kWh could rise by 0.8 øre in Norway. The sea cable is planned as a bipolar system with earthing through the return cable. This way, the disadvantages of a ground-return electrode with earthing in the sea, such as production of chlorine compounds and metal corrosion, are avoided. Anticipated life span of the cable would be about 40 years. Since the power supply in both Germany and Norway is based on alternating current, converter stations must be built in both countries.

Project company
The project is developed by NorGer KS, a company that is owned by the Norwegian transmission system operator Statnett, energy utilities Agder Energi and Lyse Produksjon, and the Swiss company Elektrizitäts-Gesellschaft Laufenburg.  NorGer is registered in Norway.  Statnett owns 50% of the projects while all other partners own stake of 16.67% each.

Environment
NorGer will use the best available technology to limit the cable’s impact on the environment. 
Previous investigations show that underwater HVDC cables have no known impact on sea life.

Climate gain
In periods of overproduction, German wind power can be transported to Norway while water in Norwegian reservoirs can be stored for later use. With limited access to pumped hydro power stations in Southern Germany it is difficult to use the increase in wind power in the North German coastal areas. The cable connection will also be important for Norway’s plans to use more wind power. 

Power supply from wind power can vary from hour to hour according to wind strength and access to reserve power is needed to even out the variations. Hydroelectric power, with its unique regulatory capacity is a cheap and reliable balancing power source for wind power.

See also

 HVDC Norway–UK
 Scotland-Norway interconnector

References

External links
 

Electrical interconnectors to and from the Nordic grid
Electrical interconnectors to and from the Synchronous Grid of Continental Europe
Electric power transmission systems in Germany
Proposed electric power transmission systems
Electrical interconnectors in the North Sea
Germany–Norway relations
Proposed electric power infrastructure in Norway
Proposed electric power infrastructure in Germany
Bournemouth Aviation Museum. The Bournemouth Aviation Museum is an aviation museum located next to Bournemouth International Airport, near the village of Hurn in Christchurch, England. It houses a number of aircraft, aero engines, cockpits, and a limited number of ground vehicles.

History
The museum was founded in May 1998 as the Jet Heritage Museum and was located on the property of Bournemouth Airport. However, the following year it was renamed Bournemouth Aviation Museum. Then, due to expansion of the airport, in 2008 the museum was forced to move to a site near the Adventure Wonderland theme park on the south side of the B3073 road.

In 2013, the museum acquired a Boeing 737-200 named "The Spirit of Peter Bath" and has created an exhibition about Sir Peter Bath and his company Bath Travel inside the fuselage.

Collection

Aircraft on display

 Avro Vulcan B.2 (MRR) XH537 – Nose section only
 BAC One-Eleven ZE432 – Forward fuselage only
 British Aerospace 125 ZD620
 British Aerospace Jetstream 31 640 – Nose section only
 Boeing 737-200 21135
 BAC Jet Provost T.5A XW310
 CMC Leopard 001
 Colomban Cri-Cri 12-0135
 de Havilland Vampire T.11 XE856
 English Electric Canberra PR.7 WT532 – Nose section only
 English Electric Lightning F.53 ZF582 – Nose section only
 Gloster Meteor NF.14 WS776
 Grumman American AA-1B 0245
 Grumman AA-5 Tiger 0979
 Handley Page Herald 175
 Handley Page Victor K.2 XL164 – Nose section only
 Hawker Hunter F.6 XG160
 Hunting Jet Provost T.3 XM404
 North American Harvard IIB Composite
 Percival Provost T.1 WW450/WW421
 Radioplane Shelduck D.1 XR346/XV383/XW578
 SEPECAT Jaguar GR.1 XX763
 Vickers Vanguard – Nose section only
 Vickers Viscount 263 – Nose section only
 Westland Wasp HAS.1 XT431
 Westland Wessex HAS.3 XT257

Engines on display

 Bristol Siddeley Orpheus
 Daimler-Benz DB 601
 Junkers Jumo 211
 Rolls-Royce Avon 
 Rolls-Royce Griffon
 Rolls-Royce Nene 
 Rolls-Royce Viper

See also
Bournemouth Air Festival
List of aerospace museums

References

External links

Official website

Aerospace museums in England
Aviation
Dionex. Dionex Corporation is an American company based in Sunnyvale, California. It develops, manufactures, sells, and services analytical chromatography systems for separating, isolating, and identifying the components of chemical mixtures. Such equipment is used in pharmaceutical manufacturing, medical research, environmental monitoring, and food testing.

In December 2010 Thermo Fisher Scientific announced its acquisition of Dionex for $2.1 billion.

Products

Software
Dionex developed the Chromeleon brand of chromatography software. The primary function of Chromeleon is to control and obtain data from analytical instruments, such as GC, LC, IEX and MS. Chromeleon is fully Title 21 CFR Part 11 compliant. Chromeleon 7.3 is the latest edition of the software.

Hardware
The technology made by Dionex includes the Rapid Separation LC (RSLC) and polymeric HPLC columns, a type of monolithic HPLC column. Unlike the inorganic silica columns, the polymer monoliths are made of an organic polymer base. Dionex, traditionally known for its ion chromatography capabilities, has led this side of the field. Dionex first acquired a license for the polymeric monolith technology in the 1990s. Dionex also acquired ESA Biosciences' HPLC assets in 2009, expanding its expertise in this area.

References

Companies based in Sunnyvale, California
Strip steel. Strip steel or cold rolled strip is a steel product that is produced from a hot rolled strip that has been pickled.  The coil is then reduced by a single stand cold roll steel mill straight away or reversing mill or in a tandem mill consisting of several single stands in a series.  The strip is reduced to approximately final thickness by cold-rolling directly, or with the inclusion of an annealing operation at some intermediate thickness to facilitate further cold reduction or to obtain mechanical properties desired in the finished product. High carbon strip steel requires additional annealing and cold reduction operations. The coil is then slit to the desired width through the process of roll slitting. Stainless steel strip is the extension product of strip steel, usually long and narrow stainless steel strips are manufactured to meet the demands of various industrial and mechanical areas. According to the processing method, the stainless steel strip can be divided into cold rolled stainless steel strip and hot rolled stainless steel strip.

The final product typically consists of cold rolled steel that has been cut into strips of a specific widths and coiled or oscillate coiled for delivery, frequently interleaved with paper or another material which protects the surface finish of the material and assists in retaining oil or some other rust prevention solution.  This product is often later stamped to form a part from the strip steel.

References

Steels
Becke line test. The Becke line test is a technique in optical mineralogy that helps determine the relative refractive index of two materials.  It is done by lowering the stage (increasing the focal distance) of the petrographic microscope and observing which direction the light appears to move.  This movement will always go into the material of higher refractive index.  This index is determined by comparing  two  minerals directly, or comparing a mineral to a reference material such as Canada Balsam or an oil of known refractive index (oil immersion). When permanently mounted to a slide under a cover slip, the mounting medium is normally chosen to have the same refractive index as Canada Balsam (n=1.55) to avoid confusion when comparing with previously made slides. If a different mounting medium is used, its refractive index should be recorded on the slide, to avoid loss of the information. Media used for impregnating a specimen before sectioning (either for mechanical strength, or to pick out porosity with a contrasting colour) are also usually chosen with the same 1.55 refractive index. If a specimen is mounted without a cover slip - for microprobe analysis, backscattered electron microscopy, reflected light microscopy ... - then an immersion oil can be chosen with whatever refractive index is desired for the study. 

The method was developed by Friedrich Johann Karl Becke (1855–1931).

References

Further reading

Optical mineralogy
Petrology
Raghopur, Vaishali. Raghopur is a community development block in Vaishali district of Bihar. Situated between two streams of the Ganges river, it is a river island.

History
The creation and history of the Raghopur island are much older than previously thought, as recently Harappan-type bricks from Raghopur Diara were discovered. While digging for piling work to build a house at the Diara, around 10  km north of Patna, the landowner came across thousands of large bricks. He used some and kept the rest as samples out of curiosity. On 4 April 2017, the director of the state archaeological directorate, Atul Verma, visited the area and checked the samples. Vijay Kumar Choudhary, archaeologist and executive director of the Bihar Heritage Development Society, confirmed Harappan bricks  had the proportions of 1:2:4 in terms of thickness, width, and length. He said the state archaeological directorate's move was a step in the right direction to establish that human settlements existed in the area. Raghopur Diara is situated between Chechar in the north and Didarganj in the south, places of archaeological importance. Chechar in Vaishali is a Neolithic site, while remains from the Mauryan period have been found during excavations at Didarganj in Patna.

Demographics
As of the 2001 India census, Raghopur had a population of 187,722. Males constitute 54% of the population. Raghopur has an average literacy rate of 33%. The villages in Raghopur include Paharpur, Jurawanpur, Fatehpur, Birpur, Chaksingar, Rampur, and Shiv Nagar. Among all, Birpur is the largest village in this block.

Transport
The nearest towns to Raghopur are Patna, Hajipur and Bidupur. The nearest railway stations are Khoosarupur Fatuha and Bankaghat. The nearest airport is in Patna. There is only one seasonal road link (Pipa pul) that connects it to Patna, Fatuha. Apart from that, boats are a primary method of reaching the area.

References 

Community development blocks in Vaishali district
Islands of India
Populated places in India
SZD-28. The SZD-28 (Latające laboratorium -  Flying Laboratory) was a research glider designed in Poland from 1960.

Development
The SZD-28 (Latające laboratorium -  Flying Laboratory) was a twin hulled derivative of the SZD-9 Bocian 1D with two Bocian fuselages, outer wings from a Bocian and a new centre-section for testing aerofoils and other wing parts. The pilot occupied the front seat of the port fuselage with an optional observer in the starboard fuselage front seat. Equipment for test measurements was also to be carried in the rear cockpits of both hulls. Due to pressure of work at the department, work on the SZD-28 was discontinued, but the SZD-28 designation was reused as the SZD-28 Kondor, but little is known of this project.

Specifications (SZD-28)

References

http://www.piotrp.de/SZYBOWCE/pszd28.htm

PZL aircraft
1960s Polish sailplanes
SZD aircraft
Pronexus. Pronexus is a software company established in 1994 and located in Ottawa, Ontario. They specialise in producing tools for voice applications and Interactive Voice Response (IVR) for use in integrating voice/speech technology in business systems. The company is known for its development of VBVoice, which is a rapid application development (RAD) Interactive Voice Response (IVR) toolkit for telephony and speech for use in Microsoft Visual Studio. First introduced in 1994, VBVoice includes a graphical user interface (GUI) for call flow and call control. The VBVoice toolkit allows for creation of various IVR applications, such as auto attendants, outbound IVRs, predictive dialers, and self-service IVRs.

History 
2020

 ProNexus LLC. joined the Oracle NetSuite Solution Provider Program

2010
Pronexus releases VBVoice 7
Pronexus launches IVR solutions locator
Pronexus achieves Microsoft Gold Certified Partner status
Pronexus partners with distributor Bludis

2009
Pronexus opens Competency Center in Mumbai, India under joint operating agreement with Techtree IT
Pronexus wins its 14th Product of the Year award for VBVoice
VBVoice 5.6 IVR Development Application voted "Best Development Tool" at World's Communication Conference – ITEXPO EAST 2009 

2007
Pronexus introduces a Japanese version of its Interactive Voice Response (IVR) toolkit VBVoice
2004
Pronexus awarded "Innovation Award of Excellence - Exporting"
2003
Gary T. Hannah named a recipient of the 'Forty under 40' Award
2001
Gary T. Hannah and employees acquire Pronexus ownership, making it a 100% private, Canadian corporation
2000
Active Voice takes 100% interest in Pronexus, making it a wholly owned subsidiary of Active Voice
Gary T. Hannah is named president and CEO of Pronexus
Pronexus announces partnership with Nuance Communications
1997
Active Voice acquires 51% shares in Pronexus
1996
VBVoice awarded 1st Computer Telephony Product of the Year
1994
Pronexus is incorporated and VBVoice is launched, Microsoft an early adopter
1993
Ian Bowles, founder of Pronexus, starts programming VBVoice

References 

Companies based in Ottawa
Telephony
Software companies of Canada
Gassnova. Gassnova SF is the Norwegian state enterprise for carbon capture and storage. Gassnova facilitates the development of technology and solutions to ensure cost-efficient and progressive solutions for capturing and storing .

State enterprise
Gassnova was established by the Norwegian authorities in 2005 to further the development of technologies and knowledge related to carbon capture and storage (CCS) and, in addition to this, serve as the government's adviser on this issue. Gassnova is tasked with administrating the research and financing program, CLIMIT, and ensuring the testing and development of CCS technologies at the Technology Center Mongstad (TCM). CLIMIT and TCM are central elements in the work to realize Europe's first industrial-scale carbon capture and storage project, now named Longship CCS.

References

External links 
Gassnova
CCS Norway
CLIMIT
Technology Center Mongstad (TCM)
Ministry of Petroleum and Energy

Carbon capture and storage
Climate change in Norway
Natural gas companies of Norway
Ministry of Petroleum and Energy
Government-owned companies of Norway
Energy companies established in 2005
Technology companies established in 2005
Norwegian companies established in 2005
Government-owned energy companies
Intelsat 21. Intelsat 21 is a communications satellite manufactured by Boeing Space Systems (BSS) for the Intelsat Corporation, based on the BSS-702MP satellite bus. It was launched on 19 August 2012 at 06:54:59 UTC by a Zenit-3SL launch vehicle from a mobile platform in the equatorial Pacific Ocean. and replaces the Intelsat 9 satellite at 58° West Longitude.

References 

Intelsat satellites
Satellites using the BSS-702 bus
Communications satellites in geostationary orbit
Spacecraft launched in 2012
ZTR index. The ZTR index is a method of determining how weathered, both chemically and mechanically, a sediment (or a corresponding sedimentary rock) is.  The letters in ZTR stand for three common minerals found in ultra-weathered sediments: zircon, tourmaline, and rutile.  Other minerals that can be used alongside the ZTR index are garnet, magnetite, sphene, and other minerals from local provenance sources.  The ZTR index is commonly high in beach or littoral zone depositional environments due to the long transport distances from the source and the high energy of the environment.  These minerals are found in abundance due to their high specific gravity and resistance to weathering.

References

 Hubert, John F., A zircon-tourmaline-rutile maturity index and the interdependence of the composition of heavy mineral assemblages with the gross composition and texture of sandstones, Journal of Sedimentary Research; September 1962; v. 32; no. 3; p. 440-450

Petrology
Sedimentology
Jay Robert McColl. Jay Robert McColl (March 24, 1867 – 1936) was the dean of Engineering for University of Detroit starting in 1911. A Detroit elementary school is named after him.

Biography

The son of Robert McColl, he received his general education at Ann Arbor High School and graduated in 1890 from Michigan State Agricultural College (now Michigan State University) in East Lansing, Michigan. He was appointed to the U.S. Geological Survey in 1890 but did not accept this post. Instead, he took special post-graduate courses at Michigan State Agricultural College and Cornell University.

He became an adjutant professor at the University of Tennessee, 1890-1902. In 1902 he became an associate professor of thermodynamics at Purdue University and then an associate professor in steam engineer, where he was in charge of Purdue's department of steam engineering, 1903-1905. The Detroit-based American Blower Company hired McColl as a mechanical engineer in 1905. He became a consultant engineer for the firm of Ammerman, McColl & Anderson in 1910 with an office in Detroit's Penobscot Building. In 1911, he became the dean of engineering at the University of Detroit, and in 1922 he was appointed to the Michigan State Board of Agriculture.

He was a member of the American Society of Mechanical Engineers (SME), American Society for Promotion of Engineering Education and the Detroit Athletic Club.

Marriage and children
McColl married Belle G. Baldwin on January 3, 1900. They had one daughter, Jeanette Baldwin.

Death and afterward
Jay Robert McColl died in 1936. He is buried in Mount Rest Cemetery in St. Johns, Michigan.

References 

1867 births
1936 deaths
American mechanical engineers
Michigan State University alumni
University of Detroit Mercy faculty
Engineers from Ann Arbor, Michigan
Hermes (programming language). Hermes

is a language for distributed programming
that was developed at IBM's Thomas J. Watson Research Center from 1986 through 1992,
with an open-source compiler and run-time system.
Hermes' primary features included:

 Language support of processes and interprocess communication.
 Compile-time verification that operations use initialized data.
 Representation-independent data aggregates called tables.
 Lack of pointers.

It used typestate analysis to check variables transitions errors, to rule out some semantically non meaningful transitions from one state to another (i.e. starting from a value, some sequences of operations on a variable are nonsensical), of which reading an uninitialized variable is a special case. In this role of compile-time checking of data initialization is similar to definite assignment analysis performed by Java, Cyclone and C#.

Hermes and its predecessor, NIL (Network Implementation Language), were the earliest programming languages supporting this form of initialization checking.
Typestate was actually used more extensively, to generate compiler-inserted "delete" operations.

References

Distributed computing
Programming languages
Static program analysis tools
Bunker Hill Covered Bridge. The Bunker Hill Covered Bridge is one of two covered bridges left in North Carolina, (the other being the Pisgah Covered Bridge in Randolph County), and is possibly the last wooden bridge in the United States with Haupt truss construction. It was built in 1895 by Andrew Loretz Ramsour (1817–1906) in Claremont, North Carolina, and crosses Lyle Creek.

The bridge was designated a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2001 and is also listed on the National Register of Historic Places.

History and design
The project to build the bridge was started in 1894 when Catawba County Commissioners requested nearby owners of the Bunker Hill Farm to build and maintain a bridge that would cross Lyle Creek on the old Island Ford Road (a former Native American trail). According to local archives, Ramsour found the Haupt truss design in a book. Since the bridge was originally constructed as an open span, its  roof wasn't added until 1900, and in 1921, its original wooden shingle roof was replaced with a tin roof. The bridge was owned by the Bolick family until 1985 when they donated it to the Catawba County Historical Association, who restored it in 1994.

See also
List of bridges documented by the Historic American Engineering Record in North Carolina

References

External links

Bridges completed in 1895
Buildings and structures in Catawba County, North Carolina
Covered bridges on the National Register of Historic Places in North Carolina
Historic Civil Engineering Landmarks
Wooden bridges in North Carolina
Transportation in Catawba County, North Carolina
Tourist attractions in Catawba County, North Carolina
Historic American Engineering Record in North Carolina
National Register of Historic Places in Catawba County, North Carolina
Road bridges on the National Register of Historic Places in North Carolina
1895 establishments in North Carolina