omniomni/omni-engineering huggingface dataset:
Measurement Systems division. Cameron Measurement Systems (formerly NuFlo Measurement Systems), is a division of Cameron, which designs, manufactures and distributes measurement, quality, and control instrumentation for the global oil & gas and process control industries.

History 
The division was first established in 2003 as NuFlo Measurement Systems, which was itself the result of merger of three measurement companies: Barton Instrument Systems, Halliburton Measurement Systems and PMC Global Industries.

Two strategic acquisitions made by the newly formed division included Caldon Inc. and Jiskoot Ltd. Caldon is a supplier of ultrasonic metering solutions and Jiskoot manufactures sampling and blending systems for oil and gas applications. These two business units are at the core of the division's push to establish itself in fiscal and custody transfer applications such as LNG storage, ship loading & unloading and FPSOs.

Other acquisitions include PRIME Measurement Products, North Star Flow Products and the technologies of Polartek 2000 Ltd. and Sentech AS.

Cameron's Measurement Systems division is in five key product and/or
capability sectors including DPU products, turbine meters and totalizers; and sampling
and blending. The division is also raising the bar for ultrasonic flow metering and
electronic flow measurement.

Measurement Systems division Brands 
 Barton
 NuFlo
 Clif Mock
 Caldon
 Jiskoot

Sub-Brands 
 True Cut
 Scanner
 MVX
 CoJetix

References 

Instrument-making corporations
Wave motor. Wave motors were machines designed and built in the late 19th and early 20th century to harness the power of wave or tidal energy.  Many experiments were planned or built in California employing various methods. The earliest wave motors were not intended for the creation of electricity. Prior to 1880, wave motors were designed to operate non-electrically to power vehicles or mills.

References

Electric power
Electrical generators
Power station technology
Renewable energy power stations
Tidal power
Wave power
National Interoperability Field Operations Guide. The National Interoperability Field Operations Guide (NIFOG) is a technical reference for emergency communication planning and for radio technicians responsible for radios that will be used in disaster response.

The Office of Emergency Communications (OEC) was established by Congress through the Fiscal Year 2007 Appropriations Act as a response to communication challenges faced during the  September 11, 2001 attacks and Hurricane Katrina.

During each of these events, the lack of coordinated emergency communication solutions and protocols among the responding agencies hindered response and recovery efforts. These events raised awareness of the issue among public policymakers and highlighted the critical role emergency communications plays in incident response.

The first version of the NIFOG was published in September 2007. It was developed in partnership with the Department of Homeland Security’s Office of the Chief Information Officer’s Spectrum Management Office to assist Federal and non-Federal agencies and potential users of the mutual aid channels.

The NIFOG contains sections on:

Regulations and guidelines for national interoperability
Tables of nationwide interoperability channels and frequencies
Common communications references
Tables of commonly used frequencies for emergencies and disasters
Aviation, MURS, GMRS, FRS, CB, railroad, SAR and marine frequencies
Amateur emergency, calling and repeater frequencies
GETS and Satellite Phone dialing instructions

It also includes an organized listing of the national mutual aid channels and other reference material.

The guide is a popular reference among preppers, survivalists, licensed amateur radio operators and owners of radio scanners. The frequencies allow them to gather intelligence and monitor emergency services, government agencies, and emergency amateur radio frequencies during and after a disaster.

The current version is 2.01 and was issued in March of 2022. It can be ordered online, downloaded as a PDF or loaded into a mobile device.

References 

Incident management
Bruce Cathie. 
Bruce Leonard Cathie (11 February 1930 – 2 June 2013) was a New Zealand airline pilot who wrote seven books related to flying saucers and a "World energy grid".

His central thesis was that he could use mathematics to describe a grid-like pattern on Earth (i.e. the Electro-dynamic field on Earth) that powers flying saucers and controls the dates and places where nuclear bombs can function; in his book "The Harmonic Conquest of Space".

In his book "The Harmonic Conquest of Space", he claimed to have successfully predicted and documented the detonation of an early French nuclear test using his harmonic "mathematics", which is based around trigonometry and geophysical latitude/longitude coordinates.

Cathie said that he first saw a flying saucer over the Manukau Harbour, Auckland in 1952 and in discussions with other airline pilots discovered this was not uncommon.

His first book Harmonic 33, was published in New Zealand in 1968 and reprinted in the United Kingdom by Sphere Books in 1980.

New Zealand millennial author Barry Smith claimed to have received his information on restrictions on nuclear weapons from Cathie.

An interview with him was played in the fourth episode of the fourth series of the US television program In Search of....

In co-operation with mathematician Rod Maupin they developed software (Gridpoint Atlas) that would plot the proposed grid-lines on Google Earth.

Cathie's gridline theory was discussed in Season 12, Episode 122: "Ancient Architects" of the US television program, Ancient Aliens. His work was mentioned near the end of the episode. The original air date was May 19, 2017.

Cathie died in Takapuna in 2013.

Books
 Harmonic 33 (1968), 
 Harmonic 695 - The UFO and Anti-Gravity (1971), 
 Harmonic 288 - The Pulse of the Universe (1977), 
 Harmonic 371244 - The Bridge to Infinity (1989), 
 The Energy Grid (1990), 
 The Harmonic Conquest of Space (1994),

Documentary & Video
 The Harmonic Code - The Harmonics of Reality (2007)

See also
UFO sightings in New Zealand

References

External links
Official site 
?
Gridpoint Atlas 

1930 births
2013 deaths
20th-century New Zealand male writers
New Zealand aviators
Ufologists
Commercial aviators
21st-century New Zealand male writers
JetBrains MPS. JetBrains MPS (Meta Programming System) is a language workbench developed by JetBrains. MPS is a tool to design domain-specific languages (DSL). It uses projectional editing which allows users to overcome the limits of language parsers, and build DSL editors, such as ones with tables and diagrams.
It supports language-oriented programming. MPS is an environment for language definition, a language workbench, and integrated development environment (IDE) for such languages.

Composable languages
While domain-specific language extensions can often be useful in general-purpose programming languages, their text-based nature means that adding domain-specific language extensions can lead to ambiguity in text-based syntax. MPS avoids this grammatical ambiguity by working with the abstract syntax tree directly. In order to edit this tree, a text-like projectional editor is used. 

Because MPS directly uses the abstract syntax tree, MPS supports composable language definitions. This means that languages can be extended, and embedded, and these extensions can be used in the same program in MPS and will not conflict.

Reusable language infrastructure
MPS provides a reusable language infrastructure which is configured with language definition languages. MPS also provides many IDE services automatically: editor, code completion, find usages, etc.

Existing languages
 Base Language - 99% Java reimplemented with MPS. There are many extensions of this language
 collections language
 dates language
 closures language
 regular expressions language
 Language definition languages - these language are implemented with themselves, i.e. bootstrapped
 structure language
 editor language
 constraints language
 type system language
 generator language

MPS applications

Mbeddr
mbeddr is an embedded development system based on MPS. It has languages tailored to embedded development
and formal methods:
 Core C language
 Components 
 Physical units
 State machines

YouTrack
In October 2009, JetBrains released the YouTrack bug tracking system - the first commercial software product developed with MPS.

Realaxy editor
In April 2010, the Realaxy ActionScript Editor beta was released, the first commercial IDE based on the MPS platform.

PEoPL
PEoPL is a tool for software product line engineering realised in MPS.

GDF (Gamification Design Framework)
GDF is a framework for designing and deploying gameful applications. GDF consists of domain-specific languages allowing for stepwise refinement of application definitions, from higher levels of abstraction towards implementation code to be run on a gamification engine.

According to GDF's case study from Jetbrains, MPS was chosen for three main reasons: the need to provide text-based DSLs, the availability of language extension mechanisms conveying consistency management between abstraction layers, and the provision of generators to automatically derive implementation code.

Licensing
The MPS source code is released under the Apache License.

See also
 Intentional programming
 Xtext

References

External links
 
 MPS blog
 MPS User's Guide 

Language workbench
Heated hose. Heated hoses are hoses used for transporting liquids or molten materials where  integral heat is needed for temperature control.  Heated hoses are used  in bonding technology, filling and dosing systems, medical technology, chemical, pharmaceutical and food industry, extruder applications, and research & development. The heated hoses are used wherever a liquid, viscous or melted medium has to be transported from one place to another, e.g. chocolate, jelly or hotmelt. In most applications, the temperature of the medium needs to remain constant at a specified value irrespective of variations in ambient temperature.  Several constructions are available.

Heated hoses are suitable for environments from -40°C to 80°C and can be used in explosion-proof zones 1/21 and 2/22, if required.

A heated hose consists of a flexible hose, through which the media is pumped. This hose determines the resistance against temperature and chemicals. A heating element is wrapped on the hose and then it is covered with insulation material. Possible insulation materials are Polyamid, steel wire or silicone. The heating element contains a heat sensor. Fittings and fixtures can vary with the application.

Heated hose are generally specified by required inside diameter, working pressure, operating conditions, voltage, temperature sensor  and hose fitting.

Heated hoses are now available for use around the home and farm. Commonly used on farms to get water to livestock in northern climates during the winter.

See also 
 Heating element

References

External links 
 Winding of heating element on inner element of a heated hose
 Heated Hose for Home & Farm Use 
 Heated hoses for pharmaceutical application
 Heated hose for medical application
 Heated hose for waste water

Heating
Hoses
Heat number. A heat number is a unique identification coupon number that is stamped on a material plate after it is removed from the ladle and rolled at a steel mill. It serves as a traceable identifier that links the metal product to its specific batch or "heat," allowing access to detailed records about the material's composition, manufacturing process, and quality assurance.  

Industry quality standards require materials to be tested at the manufacturer and the results of these tests be submitted through a report, also called a mill sheet, mill certificate or mill test certificate (MTC).  The only way to trace a steel plate back to its mill sheet is the heat number. A heat number is similar to a lot number, which is used to identify production runs of any other product for quality control purposes.

Numerical significance 
Usually, but not universally, the numbers indicate:
 the first digit corresponds to the furnace number
 the second digit indicates the year in which the material was melted
 the last three (and sometimes four) indicate the melt number.

References 

Steelmaking
Metallurgical processes
Quality control
Lambda 4S. The Lambda 4S or L-4S was an experimental Japanese expendable carrier rocket. It was produced by Nissan and the Institute of Space and Astronautical Science and launched five times between 1966 and 1970 with Ohsumi technology demonstration satellites. The first four launches failed, however the fifth, launched on 11 February 1970, successfully placed Ohsumi-5, the first Japanese satellite, into orbit.

The Lambda 4S consisted of four stages, with two booster rockets augmenting the first stage. SB-310 rockets were used as boosters, with an L735 first stage. The second stage was a reduced length derivative of the L735, whilst an L500 was used as the third stage. The fourth stage was an L480S. All four stages burned solid propellant.

The Lambda 4S could place  of payload into low Earth orbit. It was launched from the Kagoshima Space Centre. Following its retirement in 1970, a sounding rocket derived from it, the Lambda 4SC, flew three times in order to test technologies for the Mu rockets to follow. The Mu replaced Lambda for orbital launches.

See also
 Comparison of orbital launchers families
 Comparison of orbital launch systems

References

External links
ISAS L-4S web page
The Challenge of Japan's First Satellite

Solid-fuel rockets
Space launch vehicles of Japan
Microsatellite launch vehicles
Nissan vehicles
Nanotoxicology (journal). Nanotoxicology is a peer-reviewed, scientific journal that focuses on environmental exposure, hazard, and risk of applied nanostructured materials. It publishes research that addresses the potentially toxic interactions between nanostructured materials and living matter. The journal publishes the results of studies that enhance safety during the production, use, and disposal of nanomaterials. The editor-in-chief is Håkan Wallin (National Research Centre for the Working Environment, Denmark).

According to the Journal Citation Reports, its 2020 impact factor is 5.913.

See also 
 Toxicology
 Risk assessment
 Ecotoxicology
 Nanomedicine

References

External links 
 

Academic journals established in 2007
Nanotechnology journals
Toxicology journals
Taylor & Francis academic journals
Quarterly journals
English-language journals
Keshav Memorial Institute of Technology. Keshav Memorial Institute of Technology is a private engineering college in Hyderabad in Telangana, India.

It offers B.Tech degrees in computer science and engineering, artificial intelligence and machine learning, data science, and information technology.

References

External links
KMIT
Recruiting Companies
KMIT Finishing School

Information technology schools in India
Universities and colleges in Hyderabad, India
Educational institutions established in 2007
2007 establishments in Andhra Pradesh
Jawaharlal Nehru Technological University
Glaucus of Chios. Glaucus of Chios () was a Greek metal sculptor from the island of Chios, who is often distinguished as the inventor of the art of soldering metals (Greek: σιδήρου κόλλησις, lit. "gluing together of iron").

His most noted work was a base of welded iron supporting a silver krater. According to Herodotus, it was given by Alyattes, the Lydian King and father of Croesus, to the Oracle of Delphi. The base, perhaps already without the krater, was also seen by Pausanias, who describes its construction, and by Athenaeus, who says that it was chased with small figures of animals, insects, and plants. Perhaps it is this passage that has led Meyer and others into the mistake of explaining κόλλησις as that kind of engraving on steel which is now called damascene work. Actually there is no doubt that κόλλησις meant a mode of uniting metals without the help of nails, hooks, or dovetails. Plutarch also speaks of this salver as very celebrated.

The proverb Γλαύκου τέχνη ("the skill of Glaucus"), purported by some to refer to Glaucus of Chios, could also refer to a writing technique invented by Glaucus of Samos. Cf. Stephanus Byzantinus (s. v. Αἰθάλη) and Suda (s. v. γλαῦξ ἴπταται), who appear to confuse these two persons of the name Glaucus. A scholiast on Plato identifies the two.

Glaucus is placed by Eusebius at the 2nd year of the 22nd Olympiad (691 BC). Alyattes reigned 617–560 BC. Though these dates appear inconsistent, there is nothing in Herodotus to exclude the supposition that the iron base had been made some time before Alyattes sent it to Delphi.

References

Sources
 Herodotus. The Histories. Penguin Classics, 1996, p. 11.
 Realencyclopädie der Classischen Altertumswissenschaft, Band VII, Halbband 13, Fornax-Glykon (1910), pp. 1421–1422
 

Ancient Chians
6th-century BC Greek sculptors
Ancient Greek inventors
Delphi
Glycidyl methacrylate. Glycidyl methacrylate (GMA) is an ester of methacrylic acid and glycidol. Containing both an epoxide and an acrylate groups, the molecule is bifunctional. It is a common monomer used in the production of epoxy resins. While typical home epoxies contain diglycidyl ether of bisphenol A (DGEBA),  glycidyl methacrylate is instead used to provide epoxy functionalization to polyolefins and other acrylate resins. Glycidyl methacrylate is produced by several companies worldwide, including Dow Chemical.  It is used to prepare a range of composites.

See also
Acrylate polymer
Acrylate
Methacrylate

References

Monomers
Epoxides
Methacrylate esters
IARC Group 2A carcinogens
Pierre Levasseur (aircraft builder). Pierre Georges Albert Levasseur (July 16, 1890 in Paris – August 2, 1941 in Paris) was a French aircraft and component maker. He set up his company Société Pierre Levasseur Aéronautique, always referred to simply as Levasseur in Paris in 1910, beginning by making propellers. In 1913 he began building aircraft designed by others. He then began to design his own, the majority of which were single-engine biplanes for French Naval Aviation. He also ran a flying school, where the chief pilot of his school was François Denhaut (1877–1952), notable for designing the first flying boat. Georges Abrial (1898 – 1970), an early French aerodynamicist, also worked with Levasseur to produce the Levasseur-Abrial A-1.

Sociéte Pierre Levasseur Aéronautique
Models created included:
 Levasseur-Abrial A-1, 1922 glider
 Levasseur PL.1, 1922, three seat tourer
 Levasseur PL.2, naval biplane torpedo bomber
 Levasseur PL.4, carrier-based reconnaissance aircraft
 Levasseur PL.5, carrier-based fighter
 Levasseur PL.6, 1926 two-seat fighter aircraft
 Levasseur PL.7, torpedo bomber
 Levasseur PL.8, special model created for the Orteig Prize (see The White Bird), a famous aircraft which disappeared in 1927 during an attempt to make the first non-stop transatlantic flight between Paris and New York City
 Levasseur PL.10, carrier-based reconnaissance aircraft
 Levasseur PL.14, 1920s seaplane torpedo bomber
 Levasseur PL.15, 1930s seaplane torpedo bomber
 Levasseur PL.200, 1935, observation seaplane
 Levasseur PL.400, 1939, artillery observation / liaison aircraft

References

Defunct aircraft manufacturers of France
Aircraft propeller manufacturers
 
1890 births
1941 deaths
Cryogenic rocket engine. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel and oxidizer; that is, both its fuel and oxidizer are gases which have been liquefied and are stored at very low temperatures. These highly efficient engines were first flown on the US Atlas-Centaur and were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

Rocket engines burning cryogenic propellants remain in use today on high performance upper stages and boosters. Upper stages are numerous. Boosters include ESA's Ariane 5, JAXA's H-II, ISRO's GSLV, LVM3, United States Delta IV and Space Launch System. The United States, Russia, Japan, India, France and China are the only countries that have operational cryogenic rocket engines.

Cryogenic propellants

Rocket engines need high mass flow rates of both oxidizer and fuel to generate useful thrust. Oxygen, the simplest and most common oxidizer, is in the gas phase at standard temperature and pressure, as is hydrogen, the simplest fuel. While it is possible to store propellants as pressurized gases, this would require large, heavy tanks that would make achieving orbital spaceflight difficult if not impossible. On the other hand, if the propellants are cooled sufficiently, they exist in the liquid phase at higher density and lower pressure, simplifying tankage. These cryogenic temperatures vary depending on the propellant, with liquid oxygen existing below  and liquid hydrogen below . Since one or more of the propellants is in the liquid phase, all cryogenic rocket engines are by definition liquid-propellant rocket engines.

Various cryogenic fuel-oxidizer combinations have been tried, but the combination of liquid hydrogen (LH2) fuel and the liquid oxygen (LOX) oxidizer is one of the most widely used.  Both components are easily and cheaply available, and when burned have one of the highest enthalpy releases in combustion, producing a specific impulse of up to 450 s at an effective exhaust velocity of .

Components and combustion cycles
The major components of a cryogenic rocket engine are the combustion chamber, pyrotechnic initiator, fuel injector, fuel and oxidizer turbopumps, cryo valves, regulators, the fuel tanks, and rocket engine nozzle. In terms of feeding propellants to the combustion chamber, cryogenic rocket engines are almost exclusively pump-fed. Pump-fed engines work in a gas-generator cycle, a staged-combustion cycle, or an expander cycle. Gas-generator engines tend to be used on booster engines due to their lower efficiency, staged-combustion engines can fill both roles at the cost of greater complexity, and expander engines are exclusively used on upper stages due to their low thrust.

LOX+LH2 rocket engines by country

Currently, six countries have successfully developed and deployed cryogenic rocket engines:

Comparison of first stage cryogenic rocket engines

Comparison of upper stage cryogenic rocket engines

References

External links
 USA's Cryogenic Rocket engine RL10B-2
Russian Cryogenic Rocket Engines

Rocket propulsion
Rocket engines
Rocket
 
Hydrogen technologies
Tombstone diagram. In computing, tombstone diagrams (or T-diagrams) consist of a set of “puzzle pieces” representing compilers and other related language processing programs. They are used to illustrate and reason about transformations from a source language (left of T) to a target language (right of T) realised in an implementation language (bottom of T). They are most commonly found describing complicated processes for bootstrapping, porting, and self-compiling of compilers, interpreters, and macro-processors.

T-diagrams were first used for describing bootstrapping and cross-compiling compilers by Harvey Bratman in 1961, who reshaped the diagrams originally introduced by Strong et al. (1958) to illustrate UNCOL.  Later on, others, including McKeeman et al.  and P.D. Terry, explained the usage of T-diagrams with further detail. T-diagrams are also now used to describe client-server interconnectivity on the World Wide Web. A teaching tool TDiag has been implemented at Leipzig University, Germany.

See also
 Bootstrapping (compilers)

References

Compilers
Compiler construction
Computer programming
Self-hosting software
Program transformation