omniomni/omni-engineering huggingface dataset:
Akaflieg Darmstadt D-6 Geheimrat. The Akaflieg Darmstadt D-6 Geheimrat, often shortened to Darmstadt D-6 Geheimrat, was an early competition glider with a single seat and high cantilever wing, designed and built by German University students in 1922.

Development

The Akademische Fliegergruppe of the Technical University of Darmstadt was first formed in 1921. It was, and is, a group of aeronautical students who design and construct aircraft as part of their studies and with the help and encouragement of their University. One of the first of these students was the son of a Privy Councillor () and the group's sixth design, the D-6, was named in his honour.

The Geheimrat was a wood-framed aircraft with a rectangular cross section, flat sided, plywood covered fuselage. In plan it tapered only slightly but the depth decreased rapidly towards the tail, making the fuselage behind the wing strongly wedge shaped. The wing was mounted on two extensions at the highest point, with an open, unscreened cockpit below its leading edge behind a more rounded nose. A pair short skids attached directly to the edges of the fuselage underside acted as the undercarriage, aided by a short tailskid at the rear.

The thick section wing was a cantilever structure with ply covering from the spar to the leading edge and fabric covered aft. The centre section, about half the total span, was straight edged and with a constant  chord. The outer panels were straight tapered, mostly on the trailing edge which carried the roll control surfaces. Unusually, the pilot did not alter pitch with elevators but by varying the angle of incidence in flight. The contemporary Harth-Messerschmitt S.10 glider used the same method. As a result, the fabric covered, rectangular tailplane, mounted by its leading edge at the extreme tail, was without elevators. The similarly covered fin and rudder together almost formed a square, its trailing edge over the tailplane's front spar.

Operational history

The D-6 Geheimrat first flew in 1922 and competed in the Rhön (Wasserkuppe) glider meeting that August. It gained second place in the sink rate section, though overall a contemporary observer judged the earlier Darmstadt D-4 Edith, a braced monoplane, more successful.  Having seen the Akaflieg Hannover Vampyr slope soaring for up to three hours, the Darmstadt students were soon making similar long flights in both their aircraft.

Specifications

References

External links
Göttingen 387 airfoil 
Akaflieg Darmstadt website

1920s German sailplanes
Akaflieg Darmstadt aircraft
High-wing aircraft
Aircraft first flown in 1922
Federal Aircraft CM-3. The Federal Aircraft CM-3 was an aircraft built by mechanics from the Ryan Company.

Design and development 
The CM-3 was designed to be an express mail plane that could also be used for flight training. It had 50 orders, but only one aircraft was completed. The company was dissolved shortly afterward.

The CM-3 was a high-wing strut-braced monoplane with conventional landing gear. The fuselage was made of welded steel tubing with aircraft fabric covering. The aircraft featured dual controls with seating in tandem.

Specifications (Federal Aircraft)

References 

High-wing aircraft
Harland G. Wood. Harland Goff Wood (September 2, 1907 – September 12, 1991) was an  American biochemist notable for proving in 1935 that animals, humans and bacteria fixed carbon from carbon dioxide in the metabolic pathway to succinate.
(Previously CO2 fixation had been thought to occur only in plants and a few unusual autotrophic bacteria.)

Awards and honours

Wood was a recipient of the National Medal of Science.
He was on the President's Science Advisory Committee under Presidents Lyndon B. Johnson and Richard Nixon.
He was also a member of the National Academy of Sciences, a member of the American Academy of Arts and Sciences, and of the Biochemical Society of Japan.
He was also first director of the department of biochemistry at the School of Medicine and dean of sciences, Case Western Reserve University.

Chronology 
 1907:  born in Delavan, MN, to Inez Goff and William Clark Wood
 1931: B.A. Macalester College
 1935: Ph.D. Iowa State University
 1936-1943: taught Bacteriology at Iowa State University
 1943-1946: taught Physiology at the University of Minnesota
 1946-67:  director of the Department of Biochemistry at the School of Medicine, Case Western Reserve University

References 

1907 births
1991 deaths
Macalester College alumni
University of Minnesota faculty
Case Western Reserve University faculty
Princeton University faculty
20th-century American biochemists
Members of the United States National Academy of Sciences
National Medal of Science laureates
Presidents of the International Union of Biochemistry and Molecular Biology
Metallacarboxylic acid. A metallacarboxylic acid is a metal complex with the ligand CO2H. These compounds are intermediates in reactions that involve carbon monoxide and carbon dioxide, these species are intermediates in the water gas shift reaction. Metallacarboxylic acids are also called hydroxycarbonyls.

Preparation
Metallacarboxylic acids mainly arise by the attack of hydroxide on electrophilic metal carbonyl complexes.  An illustrative synthesis is the reaction of a cationic iron carbonyl with a stoichiometric amount of base:
[(C5H5)(CO)2FeCO]BF4 + NaOH → [(C5H5)(CO)2FeCO2H + NaBF4
When applied to simple metal carbonyls, this kind of conversion is sometimes called the Hieber base reaction. Decarboxylation of the resulting anion gives the anionic hydride complex.  This conversion is illustrated by the synthesis of [HFe(CO)4]− from iron pentacarbonyl.
Fe(CO)5 + NaOH → NaFe(CO)4CO2H
NaFe(CO)4CO2H → NaHFe(CO)4 + CO2

Related compounds
Metallacarboxylic acids exist in equilibria with the carboxylate anions, LnMCO2−.

Metallacarboxylate esters (LnMCO2R) arise by the addition of alkoxide to metal carbonyl:
[LnM-CO]+ + ROH → [LnM-CO2R] + H+
Metallacarboxylic amides (LnMC(O)NR2) arise by the addition of amide to metal carbonyl:
[LnM-CO]+ + 2 RNH2 → [LnM-C(O)N(H)R] + RNH3+

Derivatives of metalladithiacarboxylic acids are also known. They are prepared by treating anionic complexes with carbon disulfide.

References

Carbonyl complexes
Organometallic chemistry
Transition metals
C. Raymond Perrault. Charles Raymond Perrault is an artificial intelligence researcher and a Distinguished Computer Scientist at SRI International. He was a co-principal investigator of the CALO project, which is the predecessor for several AI technologies including Siri.

Education
Perrault received a bachelor of science in mathematics from McGill University and a Ph.D. in computer and communication sciences from the University of Michigan in 1975.

Career
Perrault was a faculty member of the University of Toronto from 1974 to 1983, rising from assistant to full professor.

He started at SRI International in 1983, and was the director of the Artificial Intelligence Center from 1987 to 2017. While at SRI, he was a co-principal investigator of the CALO project and is also a founder of the Center for the Study of Language and Information.

Memberships and awards
Perrault was the co-editor in chief of the journal Artificial Intelligence from 2001 to 2010, the president and a trustee of the International Joint Conferences on Artificial Intelligence from 1992 to 2001, and was president of the Association for Computational Linguistics in 1983.

In 1990, Perrault was named a founding fellow of the American Association for Artificial Intelligence and in 2018 of American Association for Advancement of Science In July 2011, he won the Donald E. Walker Distinguished Service Award from the International Joint Conferences on Artificial Intelligence.

References

External links
 Raymond Perrault on LinkedIn

Living people
Year of birth missing (living people)
Place of birth missing (living people)
Artificial intelligence researchers
SRI International people
Fellows of the Association for the Advancement of Artificial Intelligence
Academic staff of the University of Toronto
McGill University Faculty of Science alumni
University of Michigan alumni
Presidents of the Association for Computational Linguistics
Ririe A Pegram Truss Railroad Bridge. The Ririe A Pegram Truss Railroad Bridge is a Pegram truss railroad bridge which crosses the Snake River  north of Ririe, Idaho. The bridge, which carries a one-track section of the East Belt Branch, consists of two truss spans and is  long by  wide. The bridge was originally constructed for a crossing in Nyssa, Oregon in 1894 for the Union Pacific Railroad and was relocated to its current site in 1914, where it carried Oregon Short Line Railroad tracks. The bridge's Pegram truss design was the work of George H. Pegram, the chief engineer for Union Pacific; as Pegram held a patent on the design, all surviving Pegram truss bridges were commissioned during Pegram's tenure with the Union Pacific and Missouri Pacific railroads.

The bridge was added to the National Register of Historic Places on July 25, 1997.

See also
 List of National Historic Landmarks in Idaho
 National Register of Historic Places listings in Jefferson County, Idaho
 Ririe B Pegram Truss Railroad Bridge, another Pegram truss bridge on the East Belt Branch

References

Bridges completed in 1894
National Register of Historic Places in Jefferson County, Idaho
Railroad bridges on the National Register of Historic Places in Idaho
Truss bridges in the United States
Union Pacific Railroad bridges
Relocated buildings and structures in Idaho
Oregon Short Line Railroad
Transportation in Jefferson County, Idaho
Pegram trusses
Ririe B Pegram Truss Railroad Bridge. The Ririe B Pegram Truss Railroad Bridge is a Pegram truss railroad bridge which crosses the flood channel of the Snake River north of Ririe, Idaho. The single-span bridge, which carries a single track of the East Belt Branch, is  long and  wide. The bridge was originally constructed for a Union Pacific Railroad crossing in Nyssa, Oregon in 1894 and was relocated to its current site in 1914, where it carried Oregon Short Line Railroad tracks. The bridge's Pegram truss design was the work of George H. Pegram, the chief engineer for Union Pacific; as Pegram held a patent on the design, all surviving Pegram truss bridges were commissioned during Pegram's tenure with the Union Pacific and Missouri Pacific railroads.

The bridge was added to the National Register of Historic Places on July 25, 1997.

See also
 List of National Historic Landmarks in Idaho
 National Register of Historic Places listings in Jefferson County, Idaho
Ririe A Pegram Truss Railroad Bridge, another Pegram truss bridge on the East Belt Branch

References

Bridges completed in 1894
National Register of Historic Places in Jefferson County, Idaho
Railroad bridges on the National Register of Historic Places in Idaho
Relocated buildings and structures in Idaho
Truss bridges in the United States
Union Pacific Railroad bridges
Pegram trusses
1894 establishments in Oregon
Oregon Short Line Railroad
1914 establishments in Idaho
Bridges over the Snake River
Transportation in Jefferson County, Idaho
Nyssa, Oregon
Asian Conference on Electrochemical Power Sources. The Asian Conference on Electrochemical Power Sources (ACEPS) is a series of scientific conferences focusing on electrochemical power sources that is held in East Asia, Southeast Asia and South Asia at different locations each time. It was initiated by Professor Zempachi Ogumi in Japan in 2006, and has subsequently been held in China (2007), South Korea (2008), Taiwan (2009), Singapore (2010), India (2012), Japan (2013), China (2015), Korea (2017), and Taiwan (2019). The next meeting will be held in Singapore (Postpone to 2022).

Background
The First Asian Conference on Electrochemical Power Sources (ACEPS-1) was held November 15–17, 2006, in Kyoto, Japan, with the aim of strengthening regional research potential and improving infrastructures in the Asian region. ACEPS promotes collaboration and co-operation between Asian scientists in the fields of fuel cells, storage batteries, super capacitors and electrochemical science.

Conferences 
Up to now, seven meetings have been held:
 ACEPS-1, November 15–17, 2006, Kyoto, Japan
 ACEPS-2, October 21–23, 2007, Fudan University, Shanghai, China
 ACEPS-3, November, 2008, Korea University, Seoul, South Korea
 ACEPS-4, November 8–12, 2009, National Taiwan University of Science and Technology, Taipei, Taiwan
 ACEPS-5, September 17–20, 2010, Singapore
 ACEPS-6, January 5–8, 2012, Indian Institute of Science and Central Electro Chemical Research Institute, India
 ACEPS-7, November 24–27, 2013, Co-Sponsored by Electrochemical Society of Japan and Chemical Society of Japan,
 ACEPS-8, August 21–25, 2015, Kai Wah Plaza Hotel, Kunming, Co-Sponsored by  Fudan University, Shanghai, China,
 ACEPS-9, August 20–23, 2017, Gyeongju, South Korea,
 ACEPS-10, November 24–27, 2019, Kaohsiung, Taiwan,
 ACEPS-11, December 11–14, 2022, National University of Singapore, Singapore
 ACEPS-12, May 19-22, 2024, Osaka International Convention Center, Japan

References 

Recurring events established in 2006
Academic conferences
Electrochemistry
Silver permanganate. Silver permanganate is an inorganic compound with the chemical formula AgMnO4. This salt is a purple crystal adopting a monoclinic crystal system. It decomposes when heated or mixed with water, and heating to high temperature may lead to explosion. The compound is used in gas masks.

Production
It can be produced through the reaction of silver nitrate and potassium permanganate:

References

Silver compounds
Permanganates
Arsenal-Delanne 10. The Arsenal-Delanne 10 was an experimental fighter aircraft of French origin. The plane had a rear cockpit and a distinctive tandem wing.

Design and development
The Arsenal-Delanne 10-C2 two-seat fighter, designed by Maurice Delanne and built by the Arsenal de l'Aéronautique, was of so-called Nenadovich biplane or tandem wing configuration, the tandem-mounted wings providing a continuous slot effect and offering exceptional center of gravity range. The fighter was of all metal stressed-skin construction, which used a sandwich technique, with a smooth dural skin welded to a corrugated sheet. Pilot and gunner sat in tandem under a single canopy at the rear of the fuselage, which was level with the rear wing, which carried twin tailplanes. This arrangement gave the gunner a clear field of fire for his planned armament of two 7.5 mm machine guns, which was to be supplemented by a 20 mm cannon firing through the propeller hub and two more machine guns in the wing. The aircraft was fitted with a retractable tailwheel undercarriage and was powered by a single  Hispano-Suiza 12Ycrs 12-cylinder liquid-cooled engine.

The Arsenal-Delanne 10-C2 prototype was virtually complete at Villacoublay when German forces occupied the factory in June 1940. Work on the aircraft continued in a desultory fashion and the first flight test was made in October 1941. After completion of the initial test programme, the aircraft was ferried to Germany for further trials.

Specifications

See also
 Miles M.35 Libellula

Footnotes

Bibliography

External links
 Artist's impression in 1938 Flight
 Picture at histaviation.com

1940s French fighter aircraft
Aircraft first flown in 1941
Delanne 10
Single-engined tractor aircraft
Tandem-wing aircraft
Gull-wing aircraft
Aircraft with retractable conventional landing gear
Single-engined piston aircraft
10
Twin-tail aircraft
Robert N. Trebits. Robert N. Trebits was a researcher in radar-related technologies, and was director of the Sensors and Electromagnetic Applications Laboratory at the Georgia Tech Research Institute (GTRI) from around 1991 until 2006 (15 years) and worked at GTRI from 1972 to 2006 (35 years).

Education
Trebits held a Ph.D. from the Georgia Institute of Technology.

Career
Trebits joined the Georgia Tech Research Institute in 1972, and became the director of the Sensors and Electromagnetic Applications Laboratory around 1991. He retired from GTRI in 2006.

Trebits has since been an adjunct professor at the Southern Polytechnic State University.

Memberships and awards
Trebits was involved in SPIE, in particular being the editor of several publications. In 1997, he was named an IEEE Fellow "for contributions and leadership in measuring and characterizing millimeter radar reflectivity and propagation effects".

References

Georgia Tech Research Institute people
Georgia Tech faculty
Fellows of the IEEE
Living people
Year of birth missing (living people)
Dazey Products Company. The Dazey Products Company was an American home appliance manufacturer that was founded in 1965. The company specialized in the manufacture of kitchen gadgets. It manufactured brand names such as "Seal-A-Meal" and "Food Saver".

The Rival Company purchased Dazey's product line in November 1996.

The remnants of Dazey Products Company was dissolved by 1999.

References

Further reading
 
 
 Hill, Judy (May 31, 1980). "Scrubber Needs More Than its Own Power." The Deseret News.

Patents
 

Manufacturing companies based in Kansas
Manufacturing companies established in 1965
Manufacturing companies disestablished in 1999
Helen of Troy Limited
Babtie, Shaw and Morton. Babtie, Shaw and Morton was a firm of civil engineers based in Glasgow, Scotland, and noted for its work on bridges, dams and reservoirs.

History
It took its name following the 1906 merger of Babtie & Bonn (a partnership founded by John Babtie and Carl Bonn in 1897) and Shaw & Morton (founded by William Shaw and Hugh Morton).

The Babtie Group acquired consulting engineers Harris & Sutherland in 1997, then also Allott & Lomax in 2000.

The 3,500-strong Babtie Group was acquired by Jacobs Engineering Group in August 2004.

Projects
Notable design projects include the Backwater Reservoir, Kielder Water, and the Harland and Wolff shipbuilding dock in Belfast.

People
James Arthur Banks and William George Nicholson Geddes both became President of the Institution of Civil Engineers while partners in the firm.
Gordon Masterton, a director of Babtie from 1993 became the firm's third President of the ICE in 2005, whilst a Vice President of Jacobs.

References

Construction and civil engineering companies of Scotland
Companies based in Glasgow
Design companies established in 1906
British companies disestablished in 2004
1906 establishments in Scotland
2004 disestablishments in Scotland
British companies established in 1906
Construction and civil engineering companies established in 1906
Airborne Outback. The Airborne Outback is an Australian two-seat flying wing ultralight trike that was designed and produced by Airborne Windsports in the mid-2000s.

Design and development
The Outback was developed as an off-airport aircraft, with a carriage that lacks a fairing and other encumbrances to "all-terrain" operations. It features a cable-braced hang glider-style high-wing, weight-shift controls, a two-seat, open cockpit, tricycle landing gear and a single engine in pusher configuration.

The aircraft single surface Wizard model wing is made from bolted-together aluminium tubing, covered in Dacron sailcloth. Its  span wing is supported by a single tube-type kingpost and uses an "A" frame control bar. The landing gear has optional tundra tires. The standard engine factory-supplied was the Rotax 582 liquid-cooled two-stroke powerplant of . The aircraft has demonstrated operations from sand dunes.

The basic Outback model was later developed into the Airborne XT series that still dominates the company's product line in 2012.

Specifications (Outback)

References

2000s Australian ultralight aircraft
Homebuilt aircraft
Single-engined pusher aircraft
Ultralight trikes
Akaflieg Darmstadt D-7 Margarete. The Akaflieg Darmstadt D-7 Margarete, often shortened to Darmstadt D-7 Margarete, was one of the earliest two seat monoplane gliders, designed and built by German university students in 1923.

Development

The Akademische Fliegergruppe of the Technical University of Darmstadt was first formed in 1921.  It was, and is, a group of aeronautical students who design and construct aircraft as part of their studies and with the help and encouragement of their University. The 1923 D-7 monoplane was their first two-seat design and one of the first of its kind, though the Fokker FG-2 two seat biplane glider flew the previous year; the D-7 was named after the wife of an Akaflieg Darmstadt student killed at the first Rhön (Wasserkuppe) glider meeting in 1920.

The Margarete was a wood-framed aircraft with a high, braced, two spar wing with ply covering from the front spar to the leading edge and fabric covered aft. The wing had a thick and cambered profile inboard of the tips, which had a thinner and more symmetric profile.  Initially the wing plan was rectangular, with triangular ailerons mounted on straight hinges which were attached to the front spar at the tips, reaching the trailing edge inboard.  Later, the aileron area was reduced, partly by cropping them inboard and also by tapering their trailing edges and rounding their tips.  Each wing was braced from the lower fuselage with an asymmetric, V-form, streamlined strut to the two spars at about one-third span.

The fuselage was plywood covered with a flat top, deep, slightly curved sides and a V-shaped bottom.  The nose was blunt and the open, unscreened cockpit used for solo flying was well forward of the wing leading edge.  The separate second cockpit was under the wing, close to the centre of gravity so that its occupation did not seriously affect the trim. The wing centre section was supported above this cockpit on an extension of the upper rear fuselage, which dropped away aft to become slender at the tail. There was a short undercarriage skid attached directly to the fuselage underside, aided by a small tailskid.  A narrow, triangular, ply covered fin  carried a fabric covered, trapezoidal rudder which extended to the bottom of the fuselage.  The fabric covered tailplane was mounted on the top of the fuselage; in plan, tailplane and elevators  were straight edged, only slightly tapered and with angled tips.  A small elevator cut-out allowed rudder movement.

Operational history

The D-7 Margarete first flew in 1923 and took part in both the 1923 and 1924 Rhön events, setting an unofficial record at the latter with a passenger-carrying flight of 21 minutes. It was later used for passenger flights, though not for basic training, until it was written off in 1927 when an aileron cable broke  during landing.

Specifications

References

External links

Göttingen 533 airfoil
Akaflieg Darmstadt website

1920s German sailplanes
Akaflieg Darmstadt aircraft
High-wing aircraft
Aircraft first flown in 1923
SecureEasySetup. SecureEasySetup, or SES is a proprietary technology developed by Broadcom to easily set up wireless LANs with Wi-Fi Protected Access. A user presses a button on the wireless access point, then a button on the device to be set up (printer, etc.) and the wireless network is automatically set up.

This technology has been succeeded by the industry-standard Wi-Fi Protected Setup. However, Wi-Fi Protected Setup was recently broken and has been shown to be easily breakable with brute-force attacks.

References
 Stephen Lawson (Jul 26, 2005) Linksys Simplifies Wireless Security, IDG News Service
 Rob Squires (9 January 2005) Broadcom, HP close wi-fi security hole, The Inquirer
 Security Now!, Episode 335, recorded January 9, 2012: WiFi Protected (In)Security http://www.grc.com/sn/sn-335.htm

External links
 Broadcom: SecureEasySetup
 Linksys Products and SecureEasySetup™ (SES) - Frequently Asked Questions

Wireless networking