omniomni/omni-engineering huggingface dataset:
S. K. Jain. S. K. Jain was the chairman and managing director of the Nuclear Power Corporation of India from 2004 to 2012.
In June 2012, Jain was elected chairman of the Governing Board of World Association of Nuclear Operators (WANO), Tokyo Centre.

References

Living people
Indian mechanical engineers
Year of birth missing (living people)
Place of birth missing (living people)
21st-century Indian people
Guilleminite. Guilleminite (Ba(UO2)3(SeO3)2(OH)4·3H2O) is a uranium mineral named by R. Pierrot, J. Toussaint, and T. Verbeek in 1965 in honor of Jean Claude Guillemin (1923–1994), a chemist and mineralogist. It is a rare uranium/selenium mineral found at the Musonoi Mine in the Katanga Province of the Democratic Republic of the Congo.

This secondary mineral also includes barium in its structure, in addition to selenium and uranium. It is bright yellow in colour and usually has an acicular crystal habit. It has a Mohs hardness of 2–3.

Pleochroism 
Guilleminite shows strong pleochroic attributes. Depending on the axis the gem is seen, guilleminite on the X axis can be seen in a bright yellow color, on the Y axis can be seen yellow, and on the Z axis is seen as a colorless gem.

References

Barium minerals
Uranium(VI) minerals
Selenite minerals
Orthorhombic minerals
Minerals in space group 31
Minerals described in 1965
Bayleyite. Bayleyite is a uranium carbonate mineral with the chemical formula: Mg2(UO2)(CO3)3·18(H2O). It is a secondary mineral which contains magnesium, uranium and carbon. It is a bright yellow color. Its crystal habit is acicular but is more commonly found as crusts on uranium bearing ores. It has a Mohs hardness of about 2–2.5.

Occurrence
It was first described in 1948 for an occurrence in the Hillside mine, north of Bagdad, Yavapai County, Arizona and named for mineralogist William Shirley Bayley (1861–1943) of the University of Illinois. It occurs as an efflorescence or coating on other secondary minerals and often is deposited on mine walls and workings. It occurs with schrockingerite, andersonite, swartzite and gypsum in the Hillside mine; with schrockingerite and gypsum in the Hideout mine in Utah; and with tyuyamunite, uranophane, liebigite and carnotite in the Powder River Basin in Wyoming.

References

Uranium(VI) minerals
Carbonate minerals
Monoclinic minerals
Minerals in space group 14
Minerals described in 1948
Derriksite. Derriksite is a very rare uranium mineral with the chemical formula Cu4(UO2)(SeO3)2(OH)6•H2O. It is a secondary mineral that contains copper, uranium and the rarer selenium. It is a bright green to duller bottle green colour. Its crystal habit is acicular, it is most likely to be found along with the uranyl selenium mineral demesmaekerite, but derriksite is much rarer than demesmaekerite. It is named after Jean Marie Francois Joseph Derriks (1912–1992), geologist and administrator of the Union Minière du Haut Katanga (UMHK). It has a Mohs hardness of about 2.

References

Further reading

Uranium(VI) minerals
Selenite minerals
Copper(II) minerals
Hydroxide minerals
Orthorhombic minerals
Minerals in space group 31
Minerals described in 1971
Autonomous Agents and Multi-Agent Systems. Autonomous Agents and Multi-Agent Systems is a peer-reviewed scientific journal covering the study of autonomous agents and multi-agent systems.

It is published bimonthly by Springer Science+Business Media and is the official journal of the International Foundation for Autonomous Agents and Multiagent Systems. According to the Journal Citation Reports, the journal has a 2020 impact factor of 1.431.

Autonomous Agents and Multi-Agent Systems was established in spring 1998 under founding editor-in-chief Katia Sycara (Carnegie Mellon University). The current editors-in-chief are Michael Luck (King's College London) and Kate Larson (University of Waterloo).

Abstracting and indexing
Autonomous Agents and Multi-Agent Systems is abstracted and indexed in Science Citation Index Expanded, Scopus, Inspec, EBSCO databases, Academic OneFile, ACM Computing Reviews, ACM Digital Library, Computer Science Index, Current Abstracts, Current Contents/Engineering, Computing and Technology, and EI-Compendex.

References

External links 
 

Academic journals established in 1998
Computer science journals
Springer Science+Business Media academic journals
English-language journals
Bimonthly journals
Alpi Pioneer 200. The Alpi Pioneer 200 is an Italian ultralight and light-sport aircraft, designed and produced by Alpi Aviation, of Pordenone. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.

Design and development
The Pioneer 200 was designed to comply with the Fédération Aéronautique Internationale microlight rules and US light-sport aircraft rules. It features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear and a single engine in tractor configuration.

The aircraft is made from wood. Its  span wing is rectangular in planform to reduce construction costs. Standard engine available is the  Rotax 912UL. The  Jabiru 2200 was used in the past.

Variants

Pioneer 200 Standard
Base model, will accept engines from .
Pioneer 200 Sauer
Model powered by a Sauer 1800 UL Volkswagen air-cooled engine.
Pioneer 200 Sparrow
Model with luxury interior, carbon fibre instrument panel and Rotax 912ULS engine of .
Pioneer 200 Beluga
Model with extended turtle-deck baggage to carry extended length loads.
Pioneer 230
Model with optional equipment included as standard. Engines available are the  Rotax 912UL,  Rotax 912ULS and the  Rotax 912iS four stroke powerplants.

Specifications (Pioneer 200)

References

External links

2000s Italian ultralight aircraft
Homebuilt aircraft
Light-sport aircraft
Alpi Aviation aircraft
Single-engined tractor aircraft
Low-wing aircraft
Yves Lapierre (civil servant). Yves Lapierre is a French civil servant, who was the directeur général (chief executive officer) of the French National Institute of Industrial Property (INPI, standing for Institut national de la propriété industrielle in French), the national intellectual property office of France, in charge of patents, trademarks and industrial design rights, from 2010 to 2016.

Lapierre graduated from the École Polytechnique and received a PhD in Physics. Prior to becoming head of the INPI, he notably worked at the Commissariat à l’énergie atomique (CEA, ) and at AREVA's subsidiary Technicatome (TA), from which he resigned as CEO in 2010.

References

Further reading

External links
 Yves Lapierre at Who's Who in France

French civil servants
Living people
21st-century French civil servants
Year of birth missing (living people)
Henrik Schärfe. Henrik Schärfe (born 1968) is a Danish former professor at Aalborg University, where he directed the Center for Computer-mediated Epistemology within the
Department of Communication and Psychology at Aalborg University.

He has been known through the Hiroshi Ishiguro-inspired and Kokoro-built robot Geminoid-DK, built to resemble himself. The Geminoid-DK project landed him on the Time top 100 list of the most influential people in 2012.

References

External links
 Henrik Scharfes website at Aalborg University
 Henrik Scharfes personal website
 Geminoid-DK project website 
 Geminoid DK Mechanical Test, demonstration video on YouTube

1968 births
Living people
Academic staff of Aalborg University
Modelling British railway prototypes. Modelling British railway prototypes is a hobby where railway modelling is applied to British prototypes.  For historical reasons, British model scales have developed somewhat separately from those in other countries, and the commercial standards; 00 gauge and British N gauge are unique to British prototypes.  The railways in Britain were for the most part standard gauge, and consequently most support focuses on these scales.  Narrow gauge, and broad gauge standards also exist.  British modellers tend to focus on British subjects, and most of the commercial support is British-based, but modellers of British prototypes exist across national boundaries.

Standard gauge prototypes

Commercially available standards 

There are two major commercial standards; 00 gauge (4 mm:foot, 16.5 mm gauge), and British N gauge (2.05 mm:foot, 9 mm gauge).  Ready-to-run (RTR) equipment is available in both standards.  Hornby Railways and Bachmann Branchline offer major RTR support in 00 gauge; Graham Farish (part of the Bachmann group) offer RTR support in N gauge.

Previously commercial support was available for British TT gauge (3mm:foot, 12mm gauge).

All three of these commercial standards suffer from being too narrow to accurately represent the track gauges, and as a result, finescale standards have been developed.

Finescale standards 

As a consequence, of the track gauges, plus overscale track, finescale standards have been developed.  These include EM gauge (4 mm scale, 18.2 mm gauge), P4 gauge (4 mm scale, 18.83 mm gauge), 3 mm finescale (3 mm scale, 14.2 mm gauge), 2 mm finescale (2 mm scale, 9.47 mm gauge).  Others have adopted H0 gauge.

Narrow gauge prototypes 

The most straightforward way of modelling narrow gauge is to adopting a larger scale but with the track from the appropriate gauge. Thus, the most common standard for narrow gauge modelling are 009 (4 mm scale, 9 mm gauge) and 016.5 (7 mm scale, 16.5 mm gauge).  These tend not to accurately represent real scales, so again there are products made to the smaller gauge but with sleeper spacing, etc., suitable for the larger scale narrow gauge trains.

Societies 

Societies include the following:

 British 1:87 Scale Society - support for British H0 scale
 Double O Gauge Association - support for 00 gauge
 009 Society - support for 4 mm scale narrow gauge.
 EM Gauge Society - support for 4 mm finescale (EM and P4)
 Gauge 0 Guild - support for 0 gauge
 Historical Model Railway Society (HMRS), support for historical model railways.
 N Gauge Society (NGS) - support for N gauge (including international N gauge standards)
 Scalefour Society (support for P4, including Irish broad gauge and Great Western broad gauge)

Magazines 

Magazines include:

 Railway Modeller
 British Railway Modelling
 Model Rail
 Model Railway Express
 Hornby Magazine

Rail transport modelling
Alpi Pioneer 300. The Alpi Pioneer 300 is an Italian ultralight and light-sport aircraft, designed and produced by Alpi Aviation, of Pordenone. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.

Design and development
The Pioneer 300 was derived from the Asso V Champion and designed to comply with the Fédération Aéronautique Internationale microlight rules, as well as the US light-sport aircraft rules. It features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, a choice of fixed or retractable tricycle landing gear and a single engine in tractor configuration. The fixed landing gear version is intended for the US light-sport aircraft category that does not permit retractable gear on landplanes  but it is also common in Europe.

The aircraft is made with a wooden frame, covered with composite skin panels. Its  span wing is tapered in planform. Standard engines available are the  Rotax 912ULS, 141 hp Rotax 915iS and 160 hp Rotax 916 iS.

In the past they were also installed  Jabiru 2200 and  Jabiru 3300.

Variants
Pioneer 300 Standard
Base model, standard engine is the  Rotax 912ULS.
Pioneer 300 Hawk
Model with upgraded canopy and interior, with plywood wing skins and oleo strut suspension.
Model with fixed gear and gross weight of  for the US light-sport aircraft market.
Pioneer 300 Turbo
Model with luxury interior, carbon fibre instrument panel and Rotax 914 turbocharged (914T) engine of  giving a cruise speed of .
Pioneer 330 Acro
Aerobatic model, with inverted-capable version of the  Rotax 912ULS and a strengthened airframe with flight load factors of +6/-3g.

Current variants

Pioneer 300
Retractable landing gear with a cruising speed of  using a  Rotax 912ULS engine. The  Rotax 914T and  915iS engines are also offered.
Pioneer 300 FG
Fixed landing gear with a cruising speed of  using a Rotax 912ULS engine.
Pioneer 300 Griffon
Luxury version with a wider and higher cabin, electrically adjustable seats and improved aerodynamics and soundproofing. With retractable landing gear, it is offered with a Rotax 812ULS engine giving a cruising speed of  or a 915iS which gives a cruising speed of .
The Pioneer 330 Acro is also available.

Specifications (Pioneer 300)

References

External links

2000s Italian ultralight aircraft
Homebuilt aircraft
Light-sport aircraft
Alpi Aviation aircraft
Single-engined tractor aircraft
Low-wing aircraft
Rheinmetall MG 60. The Rheinmetall MG60 is a general-purpose machine gun of West German origin. The weapon is a post-World War II derivative of the MG 45 experimental general-purpose machine gun.

The former owner of the Metall und Lackierwarenfabrik Johannes Großfuß AG (Metal and lacquer ware factory Johannes Großfuß corporation) and boss of MG 42 and MG 45 chief designer Werner Gruner had fled to the West after World War II also held all the essential MG 42 patents and became a consultant for Rheinmetall in West Germany. There Johannes Großfuß headed machine gun production in Düsseldorf-Derendorf and was probably also significantly involved in the development of the MG 60. After World War II Werner Gruner worked in the Soviet Union and later in East Germany, and was not involved in the development of this general-purpose machine gun. The MG 60 is lighter in weight and has a significant lower cyclic rate of fire compared to the MG 42 and MG 45 and has an unusual trigger guard.

References

7.62×51mm NATO machine guns
General-purpose machine guns
Machine guns of Germany
Medium machine guns
MG60
Trial and research firearms of Germany
Roller-delayed blowback firearms

Weapons and ammunition introduced in 1960
Sylvanus Albert Reed. Sylvanus Albert Reed (8 April 1854 – 1 October 1935) was an American aeronautical engineer who developed the modern metal aircraft propeller.

Early life and career 
Reed Graduated from Columbia University in 1874. He worked as an engineer specializing in electrical signals for railroad safety until retirement in 1912.

Later career
In 1915 Reed experimented with metal propellers using a 10 hp electric engine driving propellers up to 19,000 rpm. He researched propeller shapes and materials that could withstand tip speed up to Mach 1.35. In 1920 he was encouraged by the local police to move his experiments from his attic and rented a shop at the Curtiss aircraft company's Garden City factory. He invented the Reed Metal Propeller, testing it in August 1921 on a Curtiss K-6 powered Standard. It was developed for use on the PW-8 and Curtiss D-12 powered Hawk.  He won the 1925 Collier Trophy for his development of the Reed Aeronautic Propeller. In December 1934 Reed donated an endowment to the Institute of Aeronautical Sciences creating an annual award  for the winner of "Experimental or theoretical investigations have a beneficial influence on the development of practical aeronautics".

In 1881 he became a hereditary member of the Rhode Island Society of the Cincinnati.  Reed died in 1935.

References 

1854 births
1935 deaths
Collier Trophy recipients
Vuforia Augmented Reality SDK. Vuforia is an augmented reality software development kit (SDK) for mobile devices that enables the creation of augmented reality applications. It uses computer vision technology to recognize and track planar images and 3D objects in real time. This image registration capability enables developers to position and orient virtual objects, such as 3D models and other media, in relation to real world objects when they are viewed through the camera of a mobile device. The virtual object then tracks the position and orientation of the image in real-time so that the viewer's perspective on the object corresponds with the perspective on the target. It thus appears that the virtual object is a part of the real-world scene.

The Vuforia SDK supports a variety of 2D and 3D target types including ‘markerless’ Image Targets, 3D Model Target, and a form of addressable Fiducial Marker, known as a VuMark. Additional features of the SDK include 6 degrees of freedom device localization in space, localized Occlusion Detection using ‘Virtual Buttons’, runtime image target selection, and the ability to create and reconfigure target sets programmatically at runtime.

Vuforia provides Application Programming Interfaces (API) in C++, Java, Objective-C++, and the .NET languages through an extension to the Unity game engine. In this way, the SDK supports both native development for iOS, Android, and UWP while it also enables the development of AR applications in Unity that are easily portable to both platforms. 

Vuforia has been acquired by PTC Inc. in November 2015.

References 

Augmented reality applications
Software development kits

AR SDK providers like vuforia 

 ARCore
 Arkit
 MAXST AR SDK
 EasyAR SDK
 ARToolKit
Glass nail file. A glass nail file is a nail file with an abrasive surface made of glass, that is used to gently grind down and shape the edges of fingernails. They are often used in manicures and pedicures after the nail has been trimmed using nail clippers.

Origin
In 1997, a new technology for making glass nail files was invented in the Czech Republic, using hardened Bohemian glass, by Dalibor Blažek from Blažek Glass s.r.o company. The special procedure of thermal hardening resulted in advantages such as excellent shock-proofness and an extremely durable polishing surface. It had a fine-grained steady abrasive surface created by etching in a solution of acids, which allowed grinding nails without any pain or damaging the fingernail structure.

Types and sizes
Dimensions of the glass nail files can also be different - from the smallest (length 70 mm, thickness 2 mm) to the largest (length 195 mm, 3–6 mm thick).

Types and sizes of a glass nail file: Glass nail files of the largest sizes are used, as a rule, for pedicures. Some also produced with special glass for daily use, of for example, masters in beauty salons. Such nail files have only one working side, so as not to injure the manicure masters' finger skin.

Production technology
Glass nail file — a file for fingernails care — is made of glass. In the course of manufacturing, the material is tempered using the traditional methods of glaziers. As a result, the nail file gains a unique wear resistance. Nail files which are made of tempered glass can withstand falls onto the floor and intensive daily use. If such a nail file breaks, it is safe to touch the glass fragments.

Production of glass nail files is a step-by-step process

 Manufacture of glass sheets of particular size with smooth surface;
 Cutting nail files out of the sheets;
 Processing of the glass surface, chemical etching to obtain a fine-grained abrasive surface;
 Turning the blade edges to make it safer;
 Thermal tempering of glass to give it firmness;
 The final stages of production — nail file decorating:
 Coloring which is fixed by the means of thermal processing;
 More complicated and refined ways of decoration — hand painting, printing, engraving and incrustation with crystals;

Distinctive features

Mild care: Due to the granular surface the glass nail file doesn't injure fingernails during manicure, grinding them softly and smoothly. With continuous use with such a nail file, 

Hygiene: A glass nail file is quickly and easily disinfected. It is enough to wash it in warm water with soap.
With frequent use of this manicure tool, such as in beauty salons, the nail files undergo a process of boiling for additional cleaning, where neither the tool nor its decor are damaged.

Unique wear resistance: the granular surface of a glass nail file isn't erased even if used for several years.
The depth of the working surface's relief decreases much more slowly than with equivalent use of a metal nail file.

Density: Hardened bohemian glass is known for its durability.

See also
 Nail buffing

References

External links
Semi Cured UV Gel Nail Stickers
DTK Nail Tools and Accessories

Nail care
Toiletry
Apollo Fox. The Apollo Fox is a Hungarian ultralight and light-sport aircraft produced by Apollo Ultralight Aircraft, of Eger. The aircraft is supplied complete ready-to-fly.

Design and development
The Apollo Fox was derived from the Aeropro Eurofox, which itself was a metric adaptation of the Denney Kitfox. The Kitfox in turn is a derivative of the Avid Flyer. The Apollo Fox was adapted to comply with the Fédération Aéronautique Internationale microlight rules and US light-sport aircraft rules. It features a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear or optionally conventional landing gear and a single engine in tractor configuration.

The aircraft fuselage is made from welded steel tubing, while the wing is built with aluminum spars and ribs. The fuselage and flying surfaces are covered in doped aircraft fabric. Its  span wing is supported by V-struts and jury struts and features Junkers-style ailerons. Standard engines available are the  Rotax 582 two-stroke, the  Rotax 912UL and the  Rotax 912ULS four-stroke powerplant. The cabin width is .

The aircraft's wings fold for storage or ground transportation and can be folded by one person in ten minutes.

Operational history
In 2003 a  Rotax 912ULS-equipped Fox was flown by Andor Kántás and Csongor Lathky from Sármellék, Hungary to Sydney, Australia, a distance of .

Specifications (Fox)

References

External links

Official website

1990s Hungarian ultralight aircraft
Homebuilt aircraft
Light-sport aircraft
Single-engined tractor aircraft
Apollo Ultralight Aircraft aircraft
Arplast Micro'B. The Arplast Micro'B () is a French ultralight aircraft that was designed and produced by propeller manufacturer Arplast Helice. It was supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.

Design and development
The Arplast Micro'B was designed to comply with the Fédération Aéronautique Internationale microlight rules, with a lightened version for the US FAR 103 Ultralight Vehicles category. It features a strut-braced high-wing, a single-seat enclosed cockpit, fixed tricycle landing gear and a single engine in tractor configuration.

The Micro'B is made from a combination of welded steel and carbon fibre, with the flying surfaces made from the latter material. Its  span wing is supported by a single strut per side and features automatic flaps. Standard engines included the  Rotax 447 two-stroke or other small lightweight motors,  mounted on the main keel tube above the cockpit.

Variants
Micro'B
Initial version, which was used to win the World Microlight Championships.
Micro'B ML
Improved version, with carbon fibre construction for the FAI Microlight class. Standard engine supplied was the  Rotax 447 two-stroke aircraft engine. Empty weight of .
Micro'B 103
Lightened version for the US ultralight category, equipped with a  Briggs & Stratton V-twin engine. Empty weight of .

Specifications (Micro'B 103)

References

External links
Photo of Arplast Micro'B

1990s French ultralight aircraft
Homebuilt aircraft
Light-sport aircraft
Single-engined tractor aircraft