omniomni/omni-engineering huggingface dataset:
Nathaniel Wyeth (inventor). Nathaniel C. Wyeth (October 24, 1911 – July 4, 1990) was an American mechanical engineer and inventor. He is best known for creating a variant of polyethylene terephthalate that could withstand the pressure of carbonated liquids. Made of recyclable PET plastic, lighter than glass and virtually unbreakable, Wyeth's invention is used widely today for both carbonated and non-carbonated drinks.

Early life and education
Born in Asgard near Chadds Ford, he displayed an engineering talent throughout his youth. Wyeth held a bachelor's degree in mechanical engineering from the University of Pennsylvania. Wyeth is also known as the brother of painters Andrew Wyeth, Carolyn Wyeth, and Henriette Wyeth Hurd, the father of musician Howard Wyeth, and as the son of artist and illustrator N. C. Wyeth.

Wyeth often called himself "the other Wyeth" because N.C. and Andrew Wyeth were so well known.

Career
Nathaniel Wyeth joined DuPont in 1936 as a field engineer. By 1963 he was the company's first engineering fellow and when he retired in 1976, was DuPont's first senior engineering fellow, the company's highest technical position.

In 1967, he pondered whether soda (carbonated drinks) could be stored in plastic bottles. After experimenting with a plastic detergent bottle that proved incapable of withstanding the forces of pressurized liquids, he realized that a much stronger material would be required. He initially experimented with polypropylene, but ultimately settled on polyethylene terephthalate as the material and received the patent in 1973.

Wyeth received the 1981 Society of Plastics Engineers international award for outstanding achievement, and was inducted into the Society of the Plastics Industry Hall of Fame in 1986. He was a fellow of the American Society of Mechanical Engineers.

Wyeth was the first person named senior engineering fellow at DuPont, the company's highest technical position. Nathaniel invented or co-invented twenty-five products.  In 1990, Wyeth was award DuPont's Lavoisier Award for Technical Achievement.

Wyeth's other innovations included improvements to manufacturing process, plastics, textiles, electronics and mechanical devices.

Personal life 
He married Caroline Pyle (Howard Pyle's niece) in 1937. Local residents were inclined to think Caroline and Wyeth's father, N. C. Wyeth, carried on a relationship, though biographer David Michaelis found little evidence to suggest it. Caroline died in 1973 and in 1984 Wyeth married Jean Grady.

Wyeth and Caroline had six sons. and one daughter. Newell, their oldest child, died in 1945 alongside his grandfather, N.C. Wyeth (Wyeth's father), when their car stalled on a railroad crossing near their home and they were struck by a milk train.

See also

 Wyeth

Notes

References
 MIT Inventor of the Week, Aug. 1998

External links
 Nathaniel C. Wyeth at the "Plastics Academy Hall of Fame".
 Nathaniel C. Wyeth at the "Polymer Processing Hall of Fame".

American inventors
American mechanical engineers
University of Pennsylvania School of Engineering and Applied Science alumni
Wyeth family
1911 births
1990 deaths
People from Chadds Ford Township, Pennsylvania
UFO sightings in Iran. This is a list of alleged sightings of unidentified flying objects or UFOs in Iran.

1976 

 The 1976 Tehran UFO Incident was a radar and visual sighting of an unidentified flying object (UFO) over Tehran, the capital of Iran. The incident is particularly notable for the electromagnetic interference effects on aircraft near the UFO. Two F-4 jet interceptors independently lost instrumentation and communications as they approached, only to have these restored when they left. One F-4 also lost its weapons systems when it was about to fire on the object. The incident is well documented in a U.S. Defense Intelligence Agency (DIA) report with a distribution list that included the White House, Secretary of State, Joint Chiefs of Staff, National Security Agency (NSA), and Central Intelligence Agency (CIA). Various high-ranking Iranian military officers directly involved with the events have also gone on public record stating their belief the object was an extraterrestrial craft.

1982
 At night of summer 1982 in Isfahan, a large reflection of an object (UFO?) was seen by thousands of people in the sky.

2003 
 In August 2003, two tourists saw a couple of yellow-white colored UFOs near the Caspian Sea.

2004 
 In April, of 2004, a mass UFO sighting (known as the 2004 Iran UFO sighting) occurred between April 12–21. The UFOs were sighted by thousands of people and one was filmed by Iranian TV. It is unclear if the objects sighted were UFOs or if they were surveillance aircraft or the planet Venus.  Many photos of UFOs in Iran surfaced shortly during the UFO sighting. Many of the photos were deemed unknown by some UFO groups but written off as either hoaxes, conventional aircraft or the planet Venus.

2005 
 A tourist said that he saw a UFO hovering near the Tomb of Cyrus the Great.

2007 

 Eyewitnesses told the Fars News Agency (FNA) that a radiant UFO had crashed in the Barez Mounts of Kerman on Wednesday morning.  Abulghassem Nasrollahi, the Deputy General of the Kerman province in Iran told the news agency that all the aircraft in the area had been accounted for, but did not rule out the possibility that the object could be a meteor.  Another source also told the FNA that the object was on fire with thick smoke coming from it, and claimed that this implied the object was not a meteor. However, meteors appear as bright fireballs in the sky, as they are heated to high temperatures due largely to ram pressure as they fall at high speeds through the Earth's atmosphere. Meteors often burn up completely before reaching the ground and some leave a smoke-like trail in their wake.  Abulghassem noted that a few days earlier, in Rafsanjan, a similar incident was reported by witnesses.

See also 
 List of reported UFO sightings

References 

 
Iran
Iran
Historical events in Iran
Iranian folklore
Barouh Berkovits. Baroukh Vojtech Berkovits (May 7, 1926 – October 23, 2012) was one of the pioneers of bio-engineering, particularly the cardiac defibrillator and artificial cardiac pacemaker. In particular, Berkovits invented the "demand pacemaker" and the DC defibrillator.

Biography
Berkovits was born in Czechoslovakia. His parents and sister were murdered at Auschwitz. He immigrated to the United States in the 1950s, and worked for the pacemaker company Medtronic from 1975 until his retirement. In 1982, Berkovits received the "Distinguished Scientist Award" from the Heart Rhythm Society. He graduated from the New York University Tandon School of Engineering in 1956. He was also a faculty member at NYU Tandon.

References

Cardiac electrophysiologists
1926 births
2012 deaths
American bioengineers
People from Lučenec
Polytechnic Institute of New York University faculty
Polytechnic Institute of New York University alumni
Fibre Channel Protocol. Fibre Channel Protocol (FCP) is the SCSI interface protocol utilising an underlying Fibre Channel connection. The Fibre Channel standards define a high-speed data transfer mechanism that can be used to connect workstations, mainframes, supercomputers, storage devices and displays. FCP addresses the need for very fast transfers of large volumes of information and could relieve system manufacturers from the burden of supporting a variety of channels and networks, as it provides one standard for networking, storage and data transfer.
Some Fibre Channel characteristics are:
Performance from 266 megabits/second to 16 gigabits/second
Support both optical and copper media, with distances up to 10 km.
 Small connectors (sfp+ are most common)
 High-bandwidth utilisation with distance insensitivity
 Support for multiple cost/performance levels, from small systems to supercomputers
 Ability to carry multiple existing interface command sets, including Internet Protocol (IP), SCSI, IPI, HIPPI-FP, and audio/video.

Fibre Channel consists of the following layers:

FC-0 -- The interface to the physical media
FC-1 -- The encoding and decoding of data and out-of-band physical link control information for transmission over the physical media
FC-2 -- The transfer of frames, sequences and exchanges comprising protocol information units.
FC-3 -- Common services required for advanced features such as striping, hunt group and multicast.
FC-4 -- Application interfaces that can execute over Fibre Channel such as the Fibre Channel Protocol for SCSI (FCS).

Unlike a layered network architecture, a Fibre Channel network is largely specified by functional elements and the interfaces between them. These consist, in part, of the following:

N_PORTs—The end points for traffic.
FC Devices—The devices to which the N_PORTs provide access.
Fabric Ports—The interfaces within a network that provide attachment for an N_PORT. 
The network infrastructure for carrying frame traffic between N_PORTs.
Within a switched or mixed fabric, a set of auxiliary servers, including a name server for device discovery and network address resolution.

Fibre Channel network topologies consist of the following:

Arbitrated Loop—A series of N_PORTs connected together in daisy-chain fashion.
Switched Fabric—A network consisting of switching elements.
 Mixed Fabric—A network consisting of switches and "fabric-attached" loops. A loop-attached N_PORT (NL_PORT) is connected to the loop through an L_PORT and accesses the fabric by way of an FL_PORT.

See also 
 Fibre Channel frame

References 

 http://hsi.web.cern.ch/HSI/fcs/spec/overview.htm

SCSI
Single-system recording. Single system audio is the system of recording sound on film or SOF. There are two methods of recording, the older method, optical and the later method, magnetic. SOF was primarily used for news film prior to the advent of portable videotape recording, but was used until recently for documentary film recording.

Optical
For optical recording, the film only had a single row of perforations and the area where the other set of perforations would have been  was exposed to a small bright lamp inside the camera controlled by an amplifier (usually in a separate box) that would vary the area of recording (RCA type), by means of shutters pulled back by variation in current, or variations in intensity (Western Electric type). Editing involved painting or taping over the optical track for the distance the sound led the film through the camera and projector. This would avoid the popping sound, but would result in a second of silence.

Magnetic
Magnetic recording had magnetic media in the area where the optical sound track would be recorded on optical SOF or on release prints. The principal recording stripe was approximately 2 mm wide. A smaller balance stripe existed to compensate the thickness of the recording stripe to keep the film wound evenly. Auricon and Cinema Products Corporation were two popular manufacturers of this type of camera, which were made obsolete by the takeover of video for news shooting in the late 70s. 

The main problem with placing a magnetic stripe on film is that the tape head cannot block the projector gate and must be slightly offset, which means that sound and light cannot be recorded on the exact same piece of film.  Any given frame will be as far as 24 frames ahead of the corresponding segment of the magnetic stripe.  Editing such film by splicing it risks cutting off the current speaker's last syllable. 

To edit single-system magnetic film, it was necessary to first run it through a displacement recorder which would read the audio and re-record it backwards 24 frames behind the point where it was recorded. This put the audio in dead sync with the picture. The film was then edited. After editing the film was run through the displacement recorder again, forward this time which put the audio back at the location where the audio playback head would be in the film projector.  These additional levels of generation loss explain why the film industry has always preferred double-system recording for professional film projects.

See also
 Double-system recording

References

Film and video technology
Talisman-class destroyer. The Talisman class were a quartet of destroyers ordered for the Ottoman Navy before the First World War, but were taken over in November 1914 and completed for the Royal Navy.

Description
The Talismans were designed by Armstrong Whitworth for the Ottoman Navy, but were sub-contracted to Hawthorn Leslie and Company for building. They displaced . The ships had an overall length of , a beam of  and a draught of . They were powered by three Parsons direct-drive steam turbines, each driving one propeller shaft, using steam provided by three Yarrow boilers. The turbines developed a total of  and gave a maximum speed of . The ships carried a maximum of  of fuel oil. The ships' complement was 102 officers and ratings. The hull form was considered particularly successful and was adopted for the V and W class of 1917, arguably the peak of destroyer development at the time.

The Talisman-class ships were heavily armed for their time, shipping five single QF  Mark IV guns. Two of the guns were side by side on the forecastle. The other guns were carried on the centreline; one between the first and second funnels, one after the searchlight platform and one on a bandstand on the quarterdeck. All the guns had half-shields. The ships were designed to accommodate three above water twin mounts for  torpedoes, but only two mounts were fitted in British service.

Ships
Originally to have been renamed Napier, Narborough, Offa and Ogre respectively, they were re-allocated "T" names in February 1915.

Notes

Bibliography

 
 

Talisman class
 
Destroyer classes
New South Wales Mine Subsidence Board. The Mine Subsidence Board of New South Wales is a Government of New South Wales agency responsible for reducing the risk of mine subsidence damage to properties in New South Wales by assessing and controlling the types of buildings and improvements which can be erected in Mine Subsidence Districts. in coal mining areas of New South Wales.

The board is responsible for administering the Mine Subsidence Compensation Act. The Act provides for compensation or repair services where improvements are damaged by mine subsidence resulting from the extraction of coal.

References

External links
Mine Subsidence Board of New South Wales website

Mine Subsidence Board
Mining in New South Wales
Mining organisations in Australia
M7 mine. The M7 is a small, metal-cased United States anti-tank blast mine that was used during the Second World War. It was based on the British Hawkins grenade. Approximately 2.5 million were produced before production ceased, and although it has long since been withdrawn from U.S. service, it can be found in Angola, Burma, Cambodia, Chad, Eritrea, Ethiopia, Korea, Lebanon, Myanmar, Somalia, Thailand, and Zambia.

Description
The mine has a thin olive green painted steel case, with a large hinged pressure plate. This plate transfers force onto the mine's fuze. The fuze is triggered by relatively low pressures, making the mine effective against trucks and cars. Additionally, the fuze may be sensitive enough to make it effective as an anti-personnel mine. The mine was normally deployed inside a cloth bag or sack to prevent rocks getting trapped under the hinged lid of the mine. The mine only has a small main charge, so was typically deployed in lines or rows of up to five mines to be effective against tanks.

Several variants of the mine were produced, and two chemical (the M600 and M601) and one mechanical fuzes (the M603) were developed for the mine. A secondary fuze well may be fitted to the mine for anti-handling devices. The most common type of booby trap detonator is the M1 pull which is installed in the end fuse well. This can be attached to a trip wire or a small stake underground for anti-removal detonation. Command detonations can be achieved by screwing in an electric cap adapter and firing it with a demolition firing machine. It can even be detonated by installing a standard firing coupler with a fuse cap and safety fuse.

Specifications
 Weight: 2.2 kg
 Explosive content: 1.62 kg of Tetryl
 Length: 178 mm
 Width: 114 mm
 Height: 64 mm
 Operating pressure: 60 to 110 kg

Variants
 M7 - fitted with M600 chemical fuze
 M7A1 - fitted with M601 chemical fuze
 M7A2 - fitted with M602 mechanical fuze

References
 Jane's Mines and Mine Clearance 2005-2006

Anti-tank mines
World War II infantry weapons of the United States
Ping-Pong (rocket). 

Ping-Pong was a battlefield reconnaissance rocket developed by Lockheed-California – later the Lockheed Missiles and Space Company – for use by the United States Army. Intended to give battlefield commanders the ability to gain photographic data on enemy locations, it reached the flight-test stage before being cancelled.

Development history
In 1964, the United States Army called for proposals for a rocket that could be launched by Army units towards the suspected location of enemy units, with a camera carried on board the rocket taking pictures of the target area, before a second retrorocket motor, located in the nose of the rocket, fired to return it to its point of launch for analysis of its reconnaissance pictures. Proposals were received from Lockheed-California, Goodyear Aerospace, the Chrysler Corporation Missile Division, and Beech Aircraft; the Lockheed proposal, named "Ping-Pong", was funded for development.

Ping-Pong was conventional in appearance, launched from a tube  in diameter. A cruciform fin arrangement provided stabilization; the fins were mounted on a sliding assembly, allowing them to shift to the opposite end of the rocket's body when the retrorocket was fired to reverse the rocket's direction for the return flight.

Flight testing of Ping-Pong took place at Rosamond Dry Lake in California during the second half of 1964. The tests were considered to be successful, with the rocket being reported as "the free world's only round-trip ballistic missile"; however, follow-up studies did not result in further development.

References

Citations

Bibliography

External links
 Internet Archive: Ping-Pong-rocket on rocketservices.co.uk

Experimental rockets of the United States
United States Army equipment
Lockheed Corporation
Reconnaissance
National Technological University – Haedo Regional Faculty. The National Technological University – Haedo Regional Faculty (Castilian:Universidad Tecnológica Nacional - Facultad Regional Haedo (UTN-FRH)) is an affiliate of the National Technological University, the leading institution of its type in Argentina. 
Located in Haedo, a western suburb of Buenos Aires, it was established in 1967 and offers academic degrees in the following subjects:

 Aeronautical engineering
 Electronic engineering
 Industrial engineering
 Mechanical engineering
 Railway engineering

See also
UTN

Haedo
Educational institutions established in 1967
Engineering universities and colleges in Argentina
Technical universities and colleges in Argentina
Animal By-Products Regulations. The European Union's Animal By-Products Regulations (Regulation No 1069/2009) allows for the treatment of some animal by-products in composting and biogas plants (anaerobic digesters). The following article describes procedures required to allow solid outputs (compost, digestate) from composting plants and anaerobic digesters onto land in the United Kingdom.

Categories of Animal By-Products 

Category 1: Very high risk
Category 2: High risk
Category 3: Low risk

Category 1 
BSE (Bovine spongiform encephalopathy) carcasses and suspects
Specified Risk Material
Catering waste from international transport

Must all be destroyed, not for use in composting or biogas plants

Category 2 
Condemned meat
Manure and gut contents

Can be used in composting and biogas plants after rendering (133C, 3 bar pressure)
Manure and gut contents only can be used after pretreatment

Category 3 
Catering waste from households, restaurants
Former food
Much slaughter house waste e.g. waste blood & feathers

Can be used in composting and biogas plants without pretreatment

Treatment Standards

Composting 

Closed reactor
 Maximum particle size 40cm, minimum temperature 60C, minimum time at that temperature 2 days
 Maximum Particle size 6cm, minimum temperature 70C, minimum time at that temperature 1 hour

Housed windrow
Particle size 40cm, minimum temperature 60C, minimum time at that temperature 8 days

Biogas plants 

Maximum particle size 5cm, minimum temperature 57C, minimum time at that temperature 5 hours
Maximum particle size 6cm, minimum temperature 70C, minimum time at that temperature 1 hour

References

Notes

Further reading 

Leoci, R., Animal by-products (ABPs): origins, uses, and European regulations, Mantova: Universitas Studiorum, 2014.

See also 
Anaerobic digestion
Biodegradable waste
Composting
Pasteurization

Biodegradable waste management
Waste legislation in the United Kingdom
Waste legislation in the European Union
Agricultural law
Hercules (vehicles). Hercules (Greek: Ηρακλής) was a Greek manufacturer of agricultural machinery based in Kerkyra (Corfu). It also produced light vehicles categorized as "farm equipment" according to Greek law, including light all-terrain vehicles. The latter used Namco parts and Mitsubishi, Kubota and Ruggerini engines. Small numbers of the particular type were produced between 1980 and 1983.

References 
 L.S. Skartsis and G.A. Avramidis, "Made in Greece", Typorama, Patras, Greece (2003)  (republished by the University of Patras Science Park, 2007).
L.S. Skartsis, "Greek Vehicle & Machine Manufacturers 1800 to present: A Pictorial History", Marathon (2012)  (eBook)

External links 

 World vehicle manufacturers

Defunct motor vehicle manufacturers of Greece
Cars of Greece
Companies based in Corfu
1983 disestablishments in Greece
United States Coast Guard Air Stations. A Coast Guard Air Station (abbreviated as CGAS or AirSta) provides aviation support for the United States Coast Guard. The Coast Guard operates approximately 210 aircraft from 24 Coast Guard Air Stations in the United States. Fixed-wing aircraft, such as the HC-130 Hercules, are built for long range missions and operate from air stations. The air stations and facilities are also home to locally based MH-65D Dolphin and Sikorsky HH-60 Jayhawk helicopters and support rotor craft assigned to flight deck equipped cutters.

Unlike Coast Guard Boat Stations, which are subordinate to Sector Commanders, the commanding officer of a Coast Guard Air Station reports directly to the appropriate District Commander. Air stations are typically commanded by an officer with the rank of captain.

Air station planning and overall aviation policies are under the oversight of the Office of Aviation Forces (CG-711), which in turn reports to the Assistant Commandant for Capability.

First District

Fifth District

Seventh District

Eighth District

Ninth District

Eleventh District

Thirteenth District

Fourteenth District

Seventeenth District

Others
Air Detachment Naples (Naples, Campania, Italy) (disestablished 1972)
Air Detachment Argentia (Argentia, Newfoundland, Canada) (disestablished 1966)

Images

See also
List of United States military bases
United States Coast Guard History and Heritage Sites

References
42. https://cgaviationhistory.org/1969-coast-guard-air-station-chicago-established/

External links

Coast Guard Historian's Office: Air Stations
"Coast Guard Grows Wings to Save Lives" Popular Mechanics, April 1936 list of USCG air stations in 1936

 
Air Stations
Coast Guards Air Stations
Air