omniomni/omni-engineering huggingface dataset:
2018 UY Aviation King Air C90 crash. On 28 June 2018, at about 1:15 pm, a Beechcraft C90 King Air aircraft chartered from UY Aviation Pvt Ltd with the registration VT-UPZ crashed at Jagruti Nagar in the suburb of Ghatkopar in Mumbai, India. The 12-seater aircraft carried 4 people, including the pilot. All people on board plus one person on the ground were killed. A further three people on the ground were seriously injured.

As a result of the crash, a fire broke out in the built-up area. Local firefighters and police responded to the accident.

The aircraft had departed from Juhu Aerodrome for a test flight. Five people lost their lives in this accident; 2 pilots, 1 Technician, 1 Aircraft Maintenance Engineer, and 1 civilian.

Investigation
The Aircraft Accident Investigation Bureau, India released the final investigation report in Dec 2018. The probable cause of the accident as per the report was a stall caused by lack of situational awareness due to spatial disorientation triggered by deteriorating weather, a transition from ILS (IMC) to visual flying (Partial VMC) and unexpected bank owing to differential engine power.

The aircraft VT-UPZ was previously owned by the Uttar Pradesh government. In 2014, the aircraft had an accident in Allahabad in which there was minor damage as per DGCA investigation report. Over the next decade, the aircraft changed ownership and was transported to Mumbai where the repair work was carried out with approval from DGCA.

References

2018 disasters in India
2010s in Mumbai
Aviation accidents and incidents in 2018
Accidents and incidents involving the Beechcraft King Air
Transport in Mumbai
Aviation accidents and incidents in India
June 2018 in India
Aviation accidents and incidents caused by pilot error
Gee Gee Bridge. The Gee Gee Bridge was a heritage-listed road bridge that carried Noorong Road across the Wakool River, connecting Cunninyeuk with Wetuppa in New South Wales, Australia. The bridge was designed by Harvey Dare and opened in 1929. Owned by the Murray River Council it was replaced by a concrete structure in May 2020 and demolished.

History
Timber truss road bridges have played a significant role in the expansion and improvement of the NSW road network. Prior to the bridges being built, river crossings were often dangerous in times of rain, which caused bulk freight movement to be prohibitively expensive for most agricultural and mining produce. Only the high priced wool clip of the time was able to carry the costs and inconvenience imposed by the generally inadequate river crossings that often existed prior to the trusses construction. Timber truss bridges were preferred by the Public Works Department from the mid 19th to the early 20th century because they were relatively cheap to construct, and used mostly local materials. The financially troubled governments of the day applied pressure to the Public Works Department to produce as much road and bridge work for as little cost as possible, using local materials. This condition effectively prohibited the use of iron and steel, as these, prior to the construction of the BHP steel works at Newcastle in the early 20th century, had to be imported from England.

Harvey Dare, the designer of Dare truss and other bridges, was a leading engineer in the Public Works Department, and a prominent figure in early 20th century NSW.

Timber truss bridges, and timber bridges generally were so common that NSW was known to travellers as the "timber bridge state".

The 1929 bridge was replaced under the Roads & Maritime Services Timber Truss Bridge Strategy. The old bridge was demolished as part of the replacement. Work commenced in September 2018 with the new bridge opened in May 2020. The original bridge was subsequently demolished.

Description
Gee Gee Bridge was a Dare-type timber Allan truss road bridge. It has a single timber truss span of . There are three timber approach spans at one end and two at the other giving the bridge an overall length of .

The super structure was supported by timber trestles and provided a dual-lane carriage way with a minimum width of . A timber post and rail guard rail extended the full length of the bridge. In the 1990s strengthening of the timber trestles took place.

References

New South Wales State Heritage Register
Murray River Council
Road bridges in New South Wales
Articles incorporating text from the New South Wales State Heritage Register
Bridges completed in 1929
Buildings and structures demolished in 2020
1929 establishments in Australia
2020 disestablishments in Australia
Truss bridges in Australia
Wooden bridges in Australia
Bridges in the Riverina
Winnington Laboratory. The Winnington Laboratory was a former chemical laboratory at Winnington, near Northwich, in Cheshire, England.

History
 
The Winnington Works were built in 1874.

The laboratory was set up by the ICI Alkali Division of Imperial Chemical Industries. The chemist Francis Arthur Freeth arrived in 1907, and became head of the laboratory. ICI was formed in 1926.

Discovery of polythene

On 24 March 1933 two scientists conducted an experiment that produced polythene (polyethylene). Benzaldehyde was reacted with ethene (ethylene) at 2,000 atmospheres pressure. Sir Michael Perrin worked with this group of scientists from October 1933 until 1938. In December 1935 he conducted an experiment that allowed polythene to be created. Polythene is the world's most widespread plastic.

In 1958, manufacture of polythene was moved to ICI's plant in Hertfordshire (ICI Plastics).

Structure
The laboratory was off the A533 next to the River Weaver and south of Barnton, Cheshire. The nearby chemical works makes soda ash (sodium carbonate). 280 staff worked at the laboratory.

See also

 Billingham Manufacturing Plant, former ICI fertiliser plant
 British Plastics Federation
 ICI Fibres Research Centre at Harrogate
 Widnes Laboratory, where the world's first synthetic general anaesthetic gas was developed

References

External links
 Science Museum ICI Polythene archive

Chemical industry in the United Kingdom
Imperial Chemical Industries
Research institutes in Cheshire
Northwich
Hazardous energy. Hazardous energy in occupational safety and health is any source of energy (including electrical, mechanical, thermal, chemical, hydraulic, and pneumatic sources of energy) that "can be hazardous to workers", such as from discharge of stored energy.   Failure to control the unexpected release of energy can lead to machine-related injuries or fatalities.  The risk from these sources of energy can be controlled in a number of ways, including access control procedures such as lockout-tagout.

References

External links 
 Canadian Centre for Occupational Health and Safety, OSH Answers Fact Sheets- Hazardous Energy Control Programs
 Control of Hazardous Energy - Lockout/Tagout. OSHA Publication 3120, (Revised 2002). This booklet presents OSHA's general requirements for controlling hazardous energy during service or maintenance of machines or equipment. It is not intended to replace or to supplement OSHA standards regarding the control of hazardous energy.
 Health and Safety Executive, Electrical safety and you, a brief guide
 Lockout/Tagout. OSHA Fact Sheet, (2002). Also available in Spanish.
 National Occupational Research Agenda- Hazardous Energy Control (Lockout and other means)

Energy sources
Occupational hazards
Carpet stretcher. A carpet stretcher is a specialized tool used to install wall-to-wall carpet. The tool grips the carpet with a set of tines on the head. A force applied to the tool then tensions the carpet and pulls it closer to the wall, where it can be fixed to a tack strip.

There are two main types of carpet stretchers: "power stretchers" and "knee kickers". Power stretchers apply tension with a lever, and use a pole, typically collapsible, to extend the tensioning force across the room. Power stretchers create more tension than knee kickers, and are used to tension carpeting in large rooms.

Knee kickers apply tension using a kick of the knee to the back of the tool. They are used to tension carpet in smaller spaces, such as closets, staircases, and rooms up to  square. Failure to properly stretch carpet during installation can lead to the formation of wrinkles over time.

References

Tools
Rugs and carpets
Demi Getschko. Demi Getschko (born 4 May 1953) is a Brazilian computer scientist who is considered one of the pioneers of the Internet in Brazil. He currently is the CEO of NIC.br.

Early life 
Son of immigrants Emil Gestchko (Greek, chemical engineer) and Erifili Dimitrova Getschko (Bulgarian, pharmacist), Demi was born in Trieste, Free Territory of Trieste (now Italy), and arrived as refugees in Santos, Brazil aged 11 months.

Career 
Getschko is an electrical engineer who graduated from the Polytechnic School of the University of São Paulo in 1975, with a master's degree in 1980 and a doctorate in 1989, both in engineering by the same institution.

He worked at the Electronic Computing Center (CCE) at USP (1971–1985) and at the Data Processing Center at the São Paulo Research Foundation (1986–1996). In that period, he was an operations coordinator at RNP and participated in the network deployment effort in the country. He was one of those responsible for the first Brazilian TCP/IP connection in 1991 between FAPESP and the Energy Sciences Network (ESNet) in the United States by Fermilab. As such, he is considered one of the pioneers of Brazilian Internet.

Getschko worked as the Technology Director for Agência Estado, a subsidiary of Grupo Estado, between 1996 and 2000, and again between 2002 and 2005. He also served as the vice president of technology for iG between 2000 and 2001.

He was also a professor at the Polytechnic School of USP, and today he is an associate professor at the Pontifical Catholic University of São Paulo, where he teaches computer architecture (CA) and coordinates the Layer 2 laboratory of Projeto KyaTera.

Until May 2009, Getschko served as a member of the board of directors of ICANN by the ccNSO (Country Code Names Support Organization), elected for the 2005–2007 term and re-elected for the 2007–2009 term.

He has been a director of the Comitê Gestor da Internet no Brasil since 1995 and has been the CEO of NIC.br since 2006. He is also a member of the advisory board of the Brazilian Chamber of Electronic Commerce. In October 2010, he was appointed a member of the board of directors of Telebrás. In April 2014, he was honored with his inclusion in the Internet Hall of Fame of the Internet Society in the Global connectors category, later serving on the Hall of Fame's advisory board in 2017. In April 2016, he received a special tribute in the 1st Digital Professional Award of ABRADi-SP, for his years of contributions to the Brazilian Internet.

References

External links 
 Curriculum Lattes
 Profile of Demi Getschko at ICANN
 Blog in the newspaperEstado de S. Paulo

1954 births
Living people
Engineers from Trieste
People from Santos, São Paulo
Italian emigrants to Brazil
Brazilian people of Bulgarian descent
Brazilian engineers
Brazilian computer scientists
Internet pioneers
Hammack. Hammack is a surname. Notable people with the surname include:

Bill Hammack (born 1961), American chemical engineer and professor
Bobby Hammack (1922–1990), American musician
Caylee Hammack (born 1994), American singer-songwriter
Craig Hammack, American special effects supervisor
Katherine Hammack (born 1959), American government official
Mal Hammack (1933–2004), American college and professional football player
William S. Hammack (born 1961), American chemical engineer

See also
Ruth Hammack Alexander, American activist
Cochin College of Engineering and Technology. Cochin College of Engineering and Technology / MGM College of Engineering and Pharmaceutical Sciences is a self-financing engineering college affiliated with the University of Calicut up to 2014 admission later affiliated with the newly formed technical university, A P J Abdul Kalam Technological University from 2015 onwards and approved by All India Council for Technical Education (AICTE), New Delhi. It was established in 2012 at Athipatta, Edayoor Panchayath near Valanchery town in Tirur Taluk in Malappuram District.

A Public Charitable and Educational Trust manages Cochin College of Engineering and Technology called World Wide Knowledge Foundation having a registered office in Valanchery. Later it was handed over to the MGM Group of institutions founded by Dr. Geevarghese Yohannan.

Courses

Notable Alumini
suhail koppam - Musical artist
Abdul Saleem Kunhalakath - Coastal engineer

Notable Facaulty
Dr. Prof. Alavi Kunhu Panthakkan - University of Dubai
Durga Malathi - Chemisist, Activist
Sabith Cheru Kulamba - Artist

See also

References

External links
Cochin College of Engineering and Technology Official Website
 Official Website of Commissionarate of Entrance Examinations-Kerala
University of Calicut
University Grants Commission
National Assessment and Accreditation Council

Colleges affiliated with the University of Calicut
Private engineering colleges in Kerala
Educational institutions established in 2011
Universities and colleges in Malappuram district
2011 establishments in Kerala
Polymer (disambiguation). A polymer is a large molecule composed of many repeating subunits.

Polymer or Polymers may also refer to:
 Polymer, a 2012 album by American rapper Tonedeff
 Polymer (album), a 2019 album by British electronic duo Plaid
 Polymer (journal), an academic journal published by Elsevier
 Polymers (journal), an academic journal published by MDPI
 Polymer (library), a JavaScript library for building web applications

See also
 Polimer TV, a Tamil-language satellite television channel based in Chennai, India
Solid-state transformer. A solid-state transformer (SST), power electronic transformer (PET), or electronic power transformer is actually an AC-to-AC converter, a type of electric power converter that replaces a conventional transformer used in AC electric power distribution. It is more complex than a conventional transformer operating at utility frequency, but it can be smaller and more efficient than a conventional transformer because it operates at high frequency. The main types are "true" AC-to-AC converter (with no DC stages) and AC-to-DC-to-DC-to-AC converter (in which an active rectifier supplies power to a DC-to-DC converter, which supplies power to a power inverter). A solid-state transformer usually contains a transformer, inside the AC-to-AC converter or DC-to-DC converter, which provides electrical isolation and carries the full power. This transformer is smaller due to smaller DC-DC inverting stages between transformer coils,  which consequently mean smaller transformer coils required to step up or step down voltages. A solid-state transformer can actively regulate voltage and current. Some can convert single-phase power to three-phase power and vice versa. Variations can input or output DC power to reduce the number of conversions, for greater end-to-end efficiency. A Modular Solid-state transformer consists of several high-frequency transformers and is similar to a Multi-level converter. As a complex electronic circuit, it must be designed to withstand lightning and other surges. Solid-state transformer is an emerging technology.

References

Electric transformers
Căpitan Romano Mihail-class armored motor launch. The Căpitan Romano Mihail-class was a group of three armored motor launches of the Romanian Navy which served during the First World War and the Second World War.

Construction and specifications
The three boats were originally part of a larger class of eight vessels. The entire class was built at the Thames Iron Works in the United Kingdom between 1906 and 1907. Each boat measured 30 meters in length, with a beam of 4 meters and a draught of 0.8 meters. Normal displacement amounted to 45 tons, growing to 51 tons for a full load. Power plant consisted of two compound engines powering two shafts, generating 550 hp which resulted in a top speed of 18 knots. Each vessel could carry up to 7.6 tons of fuel. With a full complement of 20, each of the boats was armed with one 47 mm Skoda gun, one 6.5 mm Maxim machine gun and two spar torpedoes, as well as torpedo dropping gear amidships. The sides and deck were protected by bulletproof armor.

The thickness of their armor is not known, however it is known that during World War II the Germans used 20 mm-thick plates of armor to proof their landing craft against British 0.303 inches (~8 mm) caliber machine gun rounds, meaning that the armor of the Romanian vessels must have been around the same thickness.

Career
Initially, the eight vessels were classed as river torpedo boats, and served as such during the First World War. One boat was mined and sunk at the end of 1916. Ultimately, only three boats survived the Second World War. During their service, they showed considerable seaworthiness, as shown by their inclusion in the Soviet Black Sea Fleet in August 1944, instead of the Danube Flotilla (they would be returned to Romania in September 1945). This seaworthiness was also exploited by the Romanians, who fitted each of the three boats with one 300 mm depth charge thrower after the start of the Second World War. The names of the three boats were Căpitan Romano Mihail, Locotenent Călinescu Dimitrie and Maior Șonțu Ghoerghe. Of the initial class of eight vessels, these three were numbers 1, 3 and 4. Their 6.5 mm machine guns were also replaced by 20 mm autocannons.

References 

World War I naval ships of Romania
World War II naval ships of Romania
Ships built in London
World War II naval ships of the Soviet Union
Gunboats of the Romanian Naval Forces
Medwecki M9. The Medwecki M9 was a 1930s, Polish designed two-seat cabin tourer or trainer aircraft. Only one was completed before the outbreak of World War II.

Design and development

Though Józef Medwecki and Władysław Kiryluk were employed by P.W.S, they designed and built the Medwecki M9 in their own time. Begun in 1937, it was a product of the 1930s revival of amateur aircraft design in Poland and perhaps the last to fly before the German invasion of Poland in September 1939. With funding from LOPP and some aircraft companies, Medwecki, Kiryluk and friends built the M9 in the P.W.S. workshops.

The M9 was of mixed construction. Its constant thickness high wing had a rectangular plan apart from blunted tips. The wing was a wooden structure in two parts, had two spars and was plywood-covered ahead of the forward spar with fabric covering elsewhere. A pair of parallel steel tube struts on each side braced the wing to the lower fuselage. Its ailerons were of the Frise type.

It was powered by a  Cirrus III upright 4-cylinder air-cooled inline engine with its fuel tanks in the wings. The M9's fuselage was built around a triangular section frame of  steel tubes, the nose metal covered and the rest with fabric covering over a light wooden frame giving it an oval section. Its enclosed cabin was under the wing, with its windscreen just ahead of the leading edge. There were two seats in tandem, each with a starboard-side door and dual controls, and a luggage compartment behind the cabin.

The horizontal tail of the M9, mounted on top of the fuselage, was straight-tapered with rounded tips and the fin was also straight-tapered. It carried a full, rounded rudder which reached down to the keel through a gap between the elevators. The cantilever  empennage had a wooden structure with plywood covered fixed surfaces and fabric covered control surfaces.

The M9 had fixed, tailskid landing gear with tall, streamlined cantilever legs containing compressed-rubber shock absorbers and mounting wheels enclosed within spats.

It was flown for the first time by Stefan Hanschild in early August 1939. Tests showed the M9 had excellent and docile handling characteristics suiting it to both touring and training roles. The Silesian Aeroclub offered to buy the prototype when its tests were complete and plans were made for production of M9s with a range of more powerful engines and a wing set with light dihedral but these hopes were overtaken by the German invasion.

Specifications

References

1930s Polish sport aircraft
Aircraft first flown in 1939
Single-engined tractor aircraft
High-wing aircraft
Aircraft with fixed conventional landing gear
Ross Grain Elevator. The Ross Grain Elevator is a historic building located in Ross, Iowa, United States. It was built in 1881 by Charles Stuart, a Civil War veteran who was a forwarding agent for the Chicago and Northwestern Railroad. The wooden structure rests on a limestone foundation. By the early 20th century the elevator was sheathed in corrigated steel to guard against the sparks that came off of the locomotives at the nearby depot, no longer extant. The elevator is made up of three interconnected buildings that include the elevator itself, an annex, and the brick scale-engine house. At one time the property contained two grain elevators, a depot, stock yards, cob houses, town dump, coal shed and other related structures. The railroad discontinued operations here in the 1940s, and the other buildings were removed over the years. The elevator itself was used on a farm into the 1970s. It has not been used since then, but its internal mechanisms are still extant. The elevator was listed on the National Register of Historic Places in 2018.

References

Agricultural buildings and structures on the National Register of Historic Places in Iowa
National Register of Historic Places in Audubon County, Iowa
Buildings and structures in Audubon County, Iowa
Grain elevators in the United States