text stringlengths 1 3.86k |
|---|
It is a dopant in some types of glass in lasers and other optoelectronic devices . Europium oxide ( Eu2O3 ) is widely used as a red phosphor in television sets and fluorescent lamps , and as an activator for yttrium @-@ based phosphors . Color TV screens contain between 0 @.@ 5 and 1 g of europium oxide . Whereas triv... |
An application that has almost fallen out of use with the introduction of affordable superconducting magnets is the use of europium complexes , such as Eu ( fod ) 3 , as shift reagents in NMR spectroscopy . Chiral shift reagents , such as Eu ( hfc ) 3 , are still used to determine enantiomeric purity . |
A recent ( 2015 ) application of europium is in quantum memory chips which can reliably store information for days at a time ; these could allow sensitive quantum data to be stored to a hard disk @-@ like device and shipped around the country . |
= = Precautions = = |
There are no clear indications that europium is particularly toxic compared to other heavy metals . Europium chloride , nitrate and oxide have been tested for toxicity : europium chloride shows an acute intraperitoneal LD50 toxicity of 550 mg / kg and the acute oral LD50 toxicity is 5000 mg / kg . Europium nitrate sho... |
= North @-@ Eastern Area Command ( RAAF ) = |
North @-@ Eastern Area Command was one of several geographically based commands raised by the Royal Australian Air Force ( RAAF ) during World War II . For most of its existence it covered central and northern Queensland , and Papua New Guinea . It was formed in January 1942 from the eastern part of the former Norther... |
= = History = = |
= = = World War II = = = |
North @-@ Eastern Area Command was formed at Townsville , Queensland , on 15 January 1942 , taking over the eastern portion of what was previously Northern Area Command . Northern Area had been established on 8 May 1941 as one of the RAAF 's geographically based command @-@ and @-@ control zones , and covered northern... |
The outbreak of the Pacific War in December 1941 was the catalyst for Northern Area being split into North @-@ Western Area ( NWA ) and North @-@ Eastern Area ( NEA ) , to counter distinct threats to Northern Australia and New Guinea , respectively . Air Commodore Frank Lukis , formerly in charge of Northern Area , wa... |
No. 33 Squadron , operating ex @-@ Qantas Short Empire flying boats and several smaller transports , was raised in NEA on 19 February 1942 . Earlier that month , Lukis warned higher command of the poor state of preparedness and low morale of Australian Army troops at Port Moresby , due to lack of air cover and apparen... |
Several USAAF bomber formations operated under NEA 's control in early 1942 , including A @-@ 24 Banshees of the 8th Squadron from Port Moresby , and B @-@ 17 Flying Fortresses of the 435th Squadron ( initially known as the " Kangaroo Squadron " ) from Townsville . As of 20 April , operational authority over all RAAF ... |
NEA 's operational headquarters , a reinforced concrete bunker known as Building 81 , was completed in May 1942 . Located on Green Street , Townsville , at the base of Castle Hill , it was topped with a suburban house to mislead enemy aircraft . The same month , Eastern Area Command was formed , taking control of unit... |
On 1 September 1942 , No. 9 ( Operational ) Group was formed at Port Moresby as a mobile strike force to move forward with Allied advances in the Pacific , in contrast to the static , defensive nature of the area commands . It took over all units in New Guinea previously operating under NEA Command . NEA initially ret... |
In early 1943 , Japan was still believed to be capable of invading , or at least bombing , the Torres Strait islands , and NEA had only No. 7 Squadron , now operating from Horn Island , to counter the threat . It was reinforced in April by No. 84 Squadron , flying CAC Boomerang fighters . The same month , No. 72 Wing ... |
Cobby served as AOC NEA until November 1943 , handing over to Air Commodore John Summers , who held command for the remainder of the war . By the end of November , NEA headquarters staff numbered 499 , including ninety @-@ seven officers . NEA 's Catalinas joined aircraft of No. 9 Group in support of the US invasion o... |
= = = Post @-@ war activity and disbandment = = = |
Following the end of the Pacific War in August 1945 , SWPA was dissolved and RAAF Headquarters again assumed full control of all its operational formations , including the area commands . By the end of the month , NEA headquarters staff numbered 526 , including ninety @-@ eight officers . The Air Force shrank dramatic... |
Commencing in October 1953 , the RAAF was reorganised from a geographically based command @-@ and @-@ control system into one based on function . In February 1954 , the newly constituted functional organisations — Home , Training , and Maintenance Commands — assumed control of all operations , training and maintenance... |
As of 2009 , the former NEA headquarters in Building 81 , Green Street , housed Townsville 's State Emergency Service group . |
= = Order of battle = = |
As at 30 April 1942 , NEA 's order of battle comprised : |
RAAF Station Townsville |
No. 24 ( General Purpose ) Squadron |
No. 33 ( Transport ) Squadron |
No. 76 ( Fighter ) Squadron |
RAAF Station Amberley |
No. 23 ( General Purpose ) Squadron |
RAAF Station Port Moresby |
No. 11 ( General Reconnaissance ) Squadron |
No. 20 ( General Reconnaissance ) Squadron |
No. 32 ( General Reconnaissance ) Squadron |
No. 75 ( Fighter ) Squadron |
No. 3 Fighter Sector Headquarters , Townsville |
No. 4 Fighter Sector Headquarters , Port Moresby |
= Cape lobster = |
The Cape lobster , Homarinus capensis , is a species of small lobster that lives off the coast of South Africa , from Dassen Island to Haga Haga . Only a few dozen specimens are known , mostly regurgitated by reef @-@ dwelling fish . It lives in rocky reefs , and is thought to lay large eggs that have a short larval p... |
= = Distribution and ecology = = |
The Cape lobster is endemic to South Africa . It occurs from Dassen Island , Western Cape in the west to Haga Haga , Eastern Cape in the east , a range of 900 kilometres ( 560 mi ) . Most of the known specimens were regurgitated by fish caught on reefs at depths of 20 – 40 metres ( 66 – 131 ft ) . This suggests that t... |
= = Description = = |
Homarinus capensis is considerably smaller than the large northern lobsters of the Atlantic Ocean , Homarus gammarus ( the European lobster ) and Homarus americanus ( the American lobster ) , at 8 – 10 centimetres ( 3 @.@ 1 – 3 @.@ 9 in ) total length , or 4 – 5 cm ( 1 @.@ 6 – 2 @.@ 0 in ) carapace length . Accounts o... |
Homarinus and Homarus are considered to be the most plesiomorphic genera in the family Nephropidae . Nonetheless , the Cape lobster differs from Homarus in a number of characters . The rostrum of the Cape lobster is flattened , while that of Homarus is rounded in section , and curves upwards at the tip . The three pai... |
= = Taxonomy and evolution = = |
Cape lobsters are elusive and rare , with only fourteen specimens having been collected between 1792 ( the date of its first description ) and 1992 . These include five males in the collections of the South African Museum ( Cape Town ) , two in the Natural History Museum ( London ) , one in each of the East London Mus... |
The Cape lobster was first described by Johann Friedrich Wilhelm Herbst in 1792 as Cancer ( Astacus ) capensis . It was independently described in 1793 by Johan Christian Fabricius as Astacus flavus , possibly based on the same type specimen . When Friedrich Weber erected the genus Homarus in 1795 , he included Fabric... |
While analyses of morphology suggest a close relationship between Homarinus and Homarus , molecular analyses using mitochondrial DNA reveal that they are not sister taxa . Both genera lack ornamentation such as spines and carinae , but are thought to have reached that state independently , through convergent evolution... |
= A4232 road = |
The A4232 , which is also known either as the Peripheral Distributor Road ( PDR ) ( Welsh : Ffordd Ddosbarthu Ymylol ) or the Cardiff Link Road ( Welsh : Ffordd Gyswllt Caerdydd ) , is a distributor road in Cardiff , the capital of Wales . |
The first section of the PDR to be completed was the Southern Way Link Road in 1978 and the last section was the Butetown Link Road in 1995 . Construction of the first phase of the final link road , the Eastern Bay Link Road , started on 17 March 2016 and is due to be completed by April 2017 . When fully completed , t... |
The PDR has been constructed in separate link roads of between 1 @.@ 61 km ( 1 @.@ 00 mi ) and 5 @.@ 47 km ( 3 @.@ 40 mi ) around Cardiff and to date 22 kilometres ( 14 mi ) including spurs have been opened to traffic , with plans for a further 5 @.@ 53 km ( 3 @.@ 44 mi ) . It has 4 large viaducts ( Ely Viaduct , Gran... |
= = History = = |
The road was conceived in the early 1970s and planning began in the late 1970s , by South Glamorgan County Council . The road at that stage was planned to be completed by 1995 and would relieve Ely , Grangetown , Butetown and East Moors of through traffic and as a fast link to the national motorway network via the M4 ... |
The former chairman of the South Glamorgan County Council environment committee , Councillor Paddy Kitson , called the road a " necklace of opportunity " due to its shape and also the opportunities for regeneration . By 1 April 1996 the responsibility for the road was transferred from South Glamorgan County Council to... |
= = Route description = = |
The PDR has 3 separate sections ; the Capel Llanilltern Interchange ( M4 J33 ) to Queen 's Gate roundabout , the Rover Way – Lamby Way roundabout to the Llanedeyrn Interchange ( A48 ) and the Pontprennau Interchange ( A48 ) to the Pentwyn Interchange ( M4 J30 ) . |
The section from the Capel Llanilltern Interchange on the M4 ( junction 33 ) to the Queen 's Gate roundabout is sometimes referred to as the Western Link Road ( Welsh : Ffordd Gyswllt Gorllewin ) , is 15 @.@ 77 kilometers ( 9 @.@ 80 mi ) in length and includes the Capel Llanilltern – Culverhouse Cross Link Road , Ely ... |
This section partly opened in 1978 , from the Rover Way – Lamby Way roundabout to the Llanedeyrn Interchange on the A48 is oldest section of the PDR . It includes only the Southern Way Link Road , known locally as Southern Way , and is 2 @.@ 25 km ( 1 @.@ 40 mi ) in length . |
The Pentwyn Link Road section from the Pontprennau Interchange on the A48 to the Pentwyn Interchange on the M4 ( junction 30 ) is one of the newer sections of the PDR , having been opened in 1984 , it is 1 @.@ 61 km ( 1 @.@ 00 mi ) in length . The road between the Llanedeyrn Interchange to the Pontprennau Interchange ... |
= = Link roads = = |
A map of all the link roads and spur roads can be seen by clicking Map of all coordinates opposite |
Each section of the road was completed in separate link roads . |
= = = Capel Llanilltern – Culverhouse Cross Link Road = = = |
The GB £ 14 @.@ 5 million Capel Llanilltern – Culverhouse Cross Link Road ( Welsh : Ffordd Gyswllt Capel Llanilltern – Croes Cwrlwys ) , also known as the A4232 Trunk Road ( as it is the only section of the PDR which is a trunk road ) , between the Capel Llanilltern Interchange ( 51 @.@ 506481 ° N 3 @.@ 310425 ° W /... |
= = = = Ely Viaduct = = = = |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.