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Since the discovery of quasicrystals by Dan Shechtman in 1982, he has contributed to their description, notably by developing theoretical models.
He is a correspondent member at the French Academy of Sciences since 1994.
Denis Gratias graduated as a chemical engineer in 1970 at Chimie ParisTech.
In 1978, Denis Gratias defended his PhD thesis at the Structural Metallurgy Laboratory (CNRS-ENSCP), entitled Cristallography of interfaces in homogeneous crystals and developed with Richard Portier a formalism of fast electron diffraction.
He then completed his post-doctoral training at the University of California at Berkeley (USA) where he was interested in the problems of statistical thermodynamics of generalized mean field (Cluster Variation Method).
Back in France, he took up his position at the Centre d'Études de Chimie Métallurgique (CECM), CNRS laboratory in Vitry-sur-Seine (France), but was soon invited by John-Werner Cahn to the Institute of Theoretical Physics at the University of California at Santa Barbara (USA) to participate in an interdisciplinary collaboration on theoretical physics and materials science.
It was on this occasion that he was confronted with the unresolved problem of the 5th-order diffraction observed in April 1982 by Dan Shechtman.
He contributed to the seminal paper of 1984 announcing the discovery of quasicrystals.
Upon his return, a long period of intense collaboration on crystallography began between the CECM at Vitry and the Centre de physique théorique (CPHT) of the École Polytechnique.
In 2000, Denis Gratias and his wife Marianne Quiquandon moved to Châtillon to the Laboratoire d'étude des microstructures (LEM [archive], a joint ONERA-CNRS laboratory), which he directed until 2009.
Since 2014, he has been CNRS Emeritus Research Director assigned to Chimie ParisTech, at the Institut de Recherche de Chimie Paris (IRCP), within the structural metallurgy team.
Ahmedabad – Mumbai Central Tejas Express
The 82901/82902 Ahmedabad – Mumbai Central Tejas Express is a train between the Ahmedabad - Mumbai route.
It is a semi-high speed, fully air-conditioned train Introduced by Indian Railways connecting Ahmedabad - Mumbai along with six stations named Nadiad, Vadodara Bharuch, Surat, Vapi, and Borivali.
This train is start running from 19th January, 2020.
The fare of the train will be dynamic.
Since it's inauguration, this train is India's second private train after Lucknow - New Delhi Tejas Express, both operated by IRCTC.
For the first time entertainment facilities have been introduced in Indian Railways.
The Ahmedabad – Mumbai Tejas is the first Indian train to have LCD screens for each individual passengers though this facility will be available only in Executive Chair Car.
In the LCD passengers can enjoy Hindi, Marathi, Gujarati movies, listen music as well as Passenger Information System is also available.
Moreover, Passengers ca enjoy on-board free WiFi facilities.
Jianguomen (Xi'an)
Jianguomen is a gate of the historic city wall of Xi'an, China.
The gate was opened in 1939 as one of the temporarily openings for evacuation from Japanese air raid, thus the gate was known as a .
Since the opening is near to an area known as , thus the opening was also known as ().
After the wars and the establishment of the People's Republic of China in 1949, the gate was named "Jianguomen".
The South Road of , was also named after "Jianguo" as Jianguo Road ().
Jianguomen Bridge, completed in 1985, is right in front of the gate.
Joravasan railway station
Joravasan railway station is a small railway station on the Western Railway network in the state of Gujarat, India.
Joravasan railway station is 14 km away from Valsad railway station.
Passenger and MEMU trains halt here.
Larry G. Epstein
Larry G. Epstein is a Canadian economist who is currently Professor of Economics at Boston University.
He is a Fellow of the Canadian Economics Association and Econometric Society.
He was also Fellow of the Royal Society of Canada before moving to the United States.
Larry G. Epstein obtained his BSc in Mathematics with honours from the University of Manitoba in 1968, MA in Mathematics from the Hebrew University of Jerusalem in 1970 and PhD in Economics from the University of British Columbia in 1977.
He worked as a research economist at the Department of Manpower and Immigration of Canada from 1971 to 1974 before joining the University of Toronto, where he was Assistant Professor from 1977 to 1980 and Professor from 1983 to 1998.
Epstein moved to University of Rochester in 1998 and held the position of Elmer B. Milliman Professor of Economics until 2007.
He started his current position as Professor of Economics at Boston University in 2007.
Epstein has also served on the Executive Council of the Canadian Economic Association from 1987 to 1990 and has been a member of the American Academy of Arts and Sciences since 2013.
Epstein's main research areas cover topics in mathematical economics, decision theory and asset pricing.
In addition to his research work, he has also held editorial positions with numerous journals such as "Econometrica", "Journal of Economic Theory" and "Macroeconomic Dynamics".
He received the Canadian Economic Association's John Rae Award for outstanding research in 1994 and was awarded the Econometric Society's Frisch Medal the same year.
Sugoy River
The Sugoy River () is a river in Magadan Oblast, Russian Far East.
It is long, with a drainage basin of .
The river freezes in October and stays frozen until late May or early June.
There are important coal deposits in the Sugoy basin.
The river has its source in the confluence of two small rivers of the Kolyma Highlands at an elevation of and flows roughly westwards in its upper course.
After a sharp bend it flows northwards along the eastern flank of the Omsukchan Range.
North of Omsukchan town the intermontane basin where the river flows is up to wide and includes extensive wetland areas, as well as dense forests.
Finally it joins the right bank of the Kolyma River from its mouth.
The main tributary of the Sugoy is the Khetagchan (Хетагчан) that joins it in its lower course from the right.
Thanabalan Nadarajah (footballer, born 1943)
Thanabalan a/l Nadarajah (born on 1943 in Brickfields, Selangor) was a Malaysian retired football player.
A Certain Kind of Silence
A Certain Kind of Silence (Czech: Tiché doteky) is a 2019 Czech thriller film directed by Michal Hogenauer.
It stars .
Karambeli railway station
Karambeli railway station is a small railway station on the Western Railway network in the state of Gujarat, India.
Karambeli railway station is 7 km away from Vapi railway station.
Passenger and MEMU trains halt here.
Dibutyl tartrate
Dibutyl tartrate is a di-ester of tartaric acid and butanol.
It has been used as a chiral oil to separate enantiomers in chromatography.
Another use is in farinographs.
Yet another use is as a plasticizer.
The material is classed as "green" as it is made from natural products, and is biodegradable.
In 1944 the price was 4 shilling per pound.
The dielectric constant of dibutyl tartrate is 9.4
Vladyslav Yemets
Vladyslav Yemets (; born 9 September 1997) is a professional Ukrainian football defender who plays for Kolos Kovalivka on loan from Zorya Luhansk.
Yemets is a product of the Kharkiv State College of Physical Culture 1 sportive school.
He began his career in the amatour level, but in a short time was signed by the Ukrainian Premier League side FC Zorya Luhansk.
However he only participated in the games for under 21 team and played on loan in the Ukrainian First League.
In January 2020 he signed his next on loan contract with FC Kolos Kovalivka.
A-League transfers for 2020–21 season
This is a list of Australian football transfers for the 2020–21 A-League.
Only moves featuring at least one A-League club are listed.
Clubs were able to sign players at any time, but many transfers will only officially go through on 1 June because the majority of player contracts finish on 31 May.
All players without a flag are Australian.
Clubs without a flag are clubs participating in the A-League.
Vedchha railway station
Vedchha railway station is a small railway station on the Western Railway network in the state of Gujarat, India.
Vedchha railway station is 8 km away from Navsari railway station.
Passenger and MEMU trains halt here.
Cattle Breeding Centre
The Cattle Breeding Centre was a veterinary research centre in the United Kingdom.
The site opened in February 1943 as the Reading Centre for the Artificial Insemination of Dairy Cattle.
It had Shorthorn and Guernsey cattle.
In January 1944 the site produced the world's first calf produced by artificial-insemination, working with the Agricultural Improvement Council.
Another site had been opened at Cambridge in November 1942.
The site closed in 1991.
On Thursday 15 November 1979, the site was visited by President General Suharto of Indonesia; the President had come to power in a coup in 1965, and the visit was attended by protestors from Reading University Amnesty International group.
On Wednesday 29 October 1980, the site was visited by the second President of Botswana, Quett Masire.
The site was demolished by the University of Reading and sold for housing (360 houses) in 2003.
The site was east of the A327, south of the M4, around a half-mile east of the former headquarters of Berkshire County Council.
A short section of the National Cycle Network 50 runs east-west past the former site.
The site worked with artificial insemination (AI) of cattle and pigs.