Orphan date February 2009 Image Amantadine stereo.png thumb 100px Amantadine Image Hexamine.svg thumb 100px Hexamine Image Memantin Struktur.png thumb 100px Memantine Bridged compounds are compounds which contain interlocking rings. Examples include Adamantane Amantadine Biperiden Memantine Methenamine Rimantadine Norbornane Nomenclature The nomenclature of bridged compounds was established by the von Baeyer system . Some important concepts for bridged compounds are Bridgehead Any skeletal atom of the ring system which is bonded to three or more skeletal atoms excluding hydrogen . In consequence, the bridgeheads are always tertiary or quaternary carbons. For insaturations, Bredt s rule states that a double bond cannot be placed at the bridgehead of a bridged ring system, unless the rings are large enough. Bridge Unbranched chain of atoms or an atom or a valence bond connecting two bridgeheads. They may consist in carbon or heteroatoms. Excluding hydrogen Main ring Ring identified as the pattern structure. Main bridge Bridge which connects the two bridgeheads in pattern structure. Secondary bridge Any bridge not included in the main ring or the main bridge. See also Platonic hydrocarbon Fenestrane Propellane References http www.chem.qmul.ac.uk iupac vonBaeyer vb1t5.html pre Extension and Revision of the von Baeyer System for Naming Polycyclic Compounds Including Bicyclic Compounds . External links MeshName Bridged Compounds Rule A 31. Bridged hydrocarbons. Bicyclic Systems http www.acdlabs.com iupac nomenclature 79 r79 163.htm IUPAC Blue Book Rule A 32. Bridged Hydrocarbons. Polycyclic Systems http www.acdlabs.com iupac nomenclature 79 r79 164.htm IUPAC Blue Book Rule A 34. Hydrocarbon Bridges. Bridged Hydrocarbons http www.acdlabs.com iupac nomenclature 79 r79 166.htm IUPAC Blue Book Rule B 14. Bridged Heterocyclic Systems. Extension of the von Baeyer System. http www.acdlabs.com iupac nomenclature 79 r79 994.htm IUPAC Blue Book Category Organic compounds Organic co ... more details
Black bridged leaf turtle may refer to Western black bridged leaf turtle Cyclemys atripons , an Asian leaf turtle found in Cambodia, Southeast Thailand, and Vietnam. Eastern black bridged leaf turtle Cyclemys pulchristiata , an Asian leaf turtle found in Eastern Cambodia and Vietnam. See also Asian leaf turtles , turtles belonging to the genus Cyclemys . disambig ... more details
musk turtles, narrow bridged musk turtles generally only grow to about 6.5 inches 16.5 cm in length. Behavior Like all musk turtles, narrow bridged musk turtles are almost entirely aquatic ... more details
identically. Bridged amplifier Image Bridge amp.GIF thumb 200px Representative schematic of a bridged ... available increases by a factor of four. This would be true if the amplifier in bridged mode were used ... of the loudspeaker in bridged mode should be double the minimum impedance rated for stereo mode. Paralleled ... A bridge parallel amplifier configuration uses a combination of the bridged and paralleled amplifier .... From the preceding sections, it can be seen that a bridged configuration doubles the dissipation ... Bridged And Paralleled Amplifiers Category Electronic amplifiers ... more details
image Bridged T delay equaliser.svg thumb The bridged T delay equaliser is an electrical all pass filter circuit utilising Electronic filter topology Bridged T topologies bridged T topology whose purpose is to insert an, ideally, constant delay at all frequencies in the signal path. It is a class of image filter . Applications The network is used when it is required that two or more signals are matched to each other on some form of timing criterion. Delay is added to all other signals so that the total delay is matched to the signal which already has the longest delay. In television broadcasting, for instance, it is desirable that the timing of the television waveform synchronisation pulses from different sources are aligned as they reach studio control rooms or network switching centres. This ensures that cuts between sources do not result in disruption at the receivers. Another application occurs when stereophonic sound is connected by landline, for instance from an outside broadcast to the studio centre. It is important that delay is equalised between the two stereo channels as a difference will destroy the stereo imaging stereo image . When the landlines are long and the two channels arrive by substantially different routes it can require many filter sections to fully equalise the delay. Operation The operation is best explained in terms of the phase shift the network introduces. At low frequencies L is low impedance and C is high impedance and consequently the signal passes through the network with no shift in phase. As the frequency increases, the phase shift gradually increases, until at some frequency, sub 0 sub , the shunt branch of the circuit, L C , goes in to resonance and causes the centre tap of L to be short circuited to ground. Transformer action between the two halves of L, which had been steadily becoming more significant as the frequency increased, now becomes dominant. The winding of the coil is such that the secondary winding produces an inverted ... more details
Taxobox name Western black bridged leaf turtle status NE status system iucn2.3 image regnum Animal ia phylum Chordata classis Reptilia ordo Testudines familia Geoemydidae genus Cyclemys species C. atripons binomial Cyclemys atripons binomial authority Iverson & McCold, 1997 synonyms Cyclemys atripons atripons small Vetter in Vetter & Van Dijk, 2006 small ref name fritzhavas citation last1 Fritz first1 Uwe last2 Hava first2 Peter year 2007 title Checklist of Chelonians of the World issn 186405755 publisher At the request of the CITES Nomenclature Committee and the German Agency for Nature Conservation and funded by the Museum f r Tierkunde Dresden and the German Federal Ministry of Environment url http www.cnah.org pdf files 851.pdf accessdate March 27, 2011 ref range map Cyclemys atripons distribution map.png range map width 220px range map caption Cyclemys atripons range map. Cyclemys atripons , commonly known as the Western black bridged leaf turtle , is a species of Cyclemys Asian leaf turtle found in Southern Indochina . ref name checklist Turtle taxonomy Working Group Rhodin, A.G.J., van Dijk, P.P, Iverson, J.B., and Shaffer, H.B. .2010. http www.webcitation.org 5uzfktoIh Turtles of the world, 2010 update annotated checklist of taxonomy, synonymy, distribution, and conservation status . In Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. Eds. . Conservation Biology of Freshwater Turtles and Tortoises A Compilation Project of the IUCN SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs No. 5. pp. 000.85 000.164, doi 10.3854 crm.5.000.checklist.v3.2010 ref Description Carapace is reddish brown, ovoid to elongated, with or without fine radiating black patterns. Plastron .... atripons is morphologically almost indistinguishable from Eastern black bridged leaf turtle C. pulchristiata , the Eastern black bridged leaf turtle. ref name div Fritz, U., Guicking, D., Auer, M., Sommer ... more details
Taxobox name Eastern black bridged leaf turtle status NE status system iucn2.3 image regnum Animal ia phylum Chordata classis Reptilia ordo Testudines familia Geoemydidae genus Cyclemys species C. pulchristiata binomial Cyclemys pulchristiata binomial authority Iverson & McCold, 1997 synonyms Cyclemys atripons pulchristiata small Vetter in Vetter & Van Dijk, 2006 small ref name fritzhavas citation last1 Fritz first1 Uwe last2 Hava first2 Peter year 2007 title Checklist of Chelonians of the World issn 186405755 publisher At the request of the CITES Nomenclature Committee and the German Agency for Nature Conservation and funded by the Museum f r Tierkunde Dresden and the German Federal Ministry of Environment url http www.cnah.org pdf files 851.pdf accessdate March 27, 2011 ref range map Cyclemys pulchristiata distribution map.png range map width 220px range map caption Cyclemys pulchristiata range map. Cyclemys pulchristiata , commonly known as the Eastern black bridged leaf turtle , is a species of Cyclemys Asian leaf turtle found in Southern Indochina . ref name checklist Turtle taxonomy Working Group Rhodin, A.G.J., van Dijk, P.P, Iverson, J.B., and Shaffer, H.B. .2010. http www.webcitation.org 5uzfktoIh Turtles of the world, 2010 update annotated checklist of taxonomy, synonymy, distribution, and conservation status . In Rhodin, A.G.J., Pritchard, P.C.H., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Iverson, J.B., and Mittermeier, R.A. Eds. . Conservation Biology of Freshwater Turtles and Tortoises A Compilation Project of the IUCN SSC Tortoise and Freshwater Turtle Specialist Group. Chelonian Research Monographs No. 5. pp. 000.85 000.164, doi 10.3854 crm.5.000.checklist.v3.2010 ref Description Carapace is reddish brown, ovoid to elongated, with wide radiating black lines or large black specks. Plastron is mostly yellow and may have short fat lines, specks, or be uniformly ... or entirely black. It is mostly morphologically indistinguishable from the Western black bridged ... more details
Spanning tree can refer to Spanning tree mathematics , a tree which contains every vertex of a more general graph Spanning tree protocol , a protocol for finding spanning trees in bridged networks disambig it Spanning tree ... more details
Unreferenced stub auto yes date December 2009 Terengganu River is a river in Terengganu , Malaysia . It flows through the state capital of Terengganu, Kuala Terengganu , and flows into the South China Sea . It is bridged by the Sultan Mahmud Bridge in Kuala Terengganu. Coord missing Malaysia Category Rivers of Terengganu Terengganu geo stub ms Sungai Terengganu ... more details
Kushalgarh is a village in the Kohat District of Khyber Pakhtunkhwa . It is the point at which the Indus River was bridged to permit the extension of the railway from Rawalpindi to the Miranzai and Kurram valleys. 1911 coord missing Pakistan Category Populated places in Kohat District Category Railway stations in Pakistan NorthWestFrontier geo stub ... more details
Green dye gallery Bridged arenes Where two of the aryl groups are bridged by a heteroatom, these triarylmethane compounds may be further categorized into acridine s nitrogen bridged , xanthene s oxygen bridged , and thioxanthene s sulfur bridged . References commonscat reflist Category Triarylmethane ... more details
A Chinese lantern can refer to the following A collapsible paper lantern or sky lantern in bright colours used for decorative purposes, commonly painted with Chinese art and calligraphy motifs. The shrub Abutilon x hybridum The shrub or small tree Dichrostachys cinerea The herbaceous plant Physalis alkekengi The Chinese lantern structure , a molecule containing two metal centers bridged by four bidentate ligands. disambig ... more details
Refimprove date September 2007 Bridged tap or bridge tap is a long used method of cabling for telephone lines. One cable pair of wires will appear in several different terminal locations poles or pedestal s . This allows the telephone company to use or provisioning assign that pair to any subscriber near those terminal locations. Once that customer disconnects, that pair becomes usable at any of the terminals. In the days of party line telephony party line s, 2, 4, 6, or 8 users were commonly connected on the same pair which appeared at several different locations. A bridge tap has no hybrid coil or other impedance matching components, just a T or branch in the cable. Thus the bridge presents an impedance mismatch . The unused branch of the T is usually left with no device connected to its end, thus has no electrical termination . Both the tap and its unterminated branch cause unwanted signal reflection s, also called echoes. Digital subscriber line s DSL can be affected by a bridged tap, depending on where the tap is bridged. DSL signals reflect from the discontinuities, sending the signal back through the cable pair, much like a tennis ball against a brick wall. The echoed signal is now out of phase and mixed with the original, creating, among other impairments, attenuation distortion . The modem receives both signals, gets confused and takes errors or cannot Synchronization sync . If the bridged tap is long, the signal bounces back only in very attenuation attenuated form. Therefore, the modem will ignore the weaker signal and show no problem. A bridge tap can also be referred to as a multiple or a telephone pair in multiple . ref Newton s Telecom Dictionary 23rd Edition 2003, Newton, Harry p110 ref Newton s Telecom Dictionary, 23rd Edition 2003 Newton, Harry p110 See also Telephone Loading coil References Reflist External links http www.vonl.com support faq loadcoils.cfm An Introduction to Load Coils and Bridge Taps Category Local loop Category Signal cables ... more details
Musk turtle is the common name given to three genus genera of aquatic turtle s Sternotherus , the musk turtles proper, Staurotypus , variously called Mexican, three keeled or giant musk turtles, and. Claudius angustatus Claudius , the narrow bridged musk turtle. Disambig Musk turtles can grow to aprox 4 They can live to around 30 50 years. Males have longer and thicker tails than females. Females have a larger head. ... more details
Star is a hamlet place hamlet in the north of the Wales Welsh county of Pembrokeshire . It is located south of Bwlch y Groes in the valley of the Afon Cneifa where the river is bridged. External links oscoor gbx SN245350 coord 51.98566 N 4.55715 W region GB source enwiki osgb36 SN245350 display title Note WGS84 lat long, converted from OSGB36 grid ref Category Villages in Pembrokeshire Pembrokeshire geo stub cy Star, Sir Benfro ... more details
File Copper II acetate 3D balls.png thumb The Chinese lantern structure adopted by copper II acetate dihydrate In chemistry, the Chinese lantern structure is a coordination complex where two metal atoms are bridged by four Denticity bidentate ligand s. An example is copper II acetate dihydrate. The name reflects a resemblance between ball and stick model s of the structure and a Chinese paper lantern . See also Dirhodium tetraacetate Category Coordination chemistry chem stub ... more details
Dulas is a left bank tributary of the Afon Irfon , itself a tributary of the River Wye . It rises on the southeastern slopes of the Elenydd and runs southeast to join the Irfon at Garth, Powys Garth . The river is bridged by both the B4358 and the A483 roads ref Ordnance Survey 1 50,000 scale Landranger map sheet 147 Elan Valley & Builth Wells area ref . References reflist Categories coord 52.13205 N 3.52805 W type landmark region GB display title Category Rivers of Wales ... more details
A bridge tied load BTL , also known as bridged transformerless and bridged mono , is an output configuration for audio amplifier s, a form of impedance bridging used mainly in professional audio applications. ref cite book url http books.google.com books?id K1t0GxyvVbMC&pg PA87 page 87 title Guide to Sound Systems for Worship last Eiche first Jon F. publisher Hal Leonard Corporation year 1990 isbn 079350029X series Recording and Audio Technology ref The two channels of a stereo amplifier are fed the same monaural audio signal , with one channel s electrical polarity reversed. A loudspeaker is connected between the two amplifier outputs, bridging the output terminals. This can double the voltage swing at the load as compared with the same amplifier used without bridging. The configuration is most often used for subwoofer s. ref cite web url http www.directproaudio.com shop amplifiers guide modes.cfm title Stereo, Parallel, and Bridge Mono work Amp Guide publisher DirectProAudio accessdate September 28, 2011 ref Power output Because the available voltage swing across the load is doubled for the same power supply voltage, bridged output theoretically enables the design of an amplifier producing four times the power output on the same supply voltage, since. math P frac U 2 R math . However, operating a pair of existing amplifier channels in bridge mode only doubles or triples power output to the load, since the amplifier retains its existing current rating. ref name Bartlett cite web url http www.prosoundweb.com article print amplifier power master class not all ratings are similar ... connected to a bridged amplifier that was capable of driving four ohms per channel. ref cite web ... identical amplifier is required for stereo operation. For bridged amplifiers, damping factor ... for minimum resistance. Because the amplifier s bridged output is floating, it should never ... applications. See also Amplifier Bridged and paralleled amplifiers Electronic amplifier Single ended ... more details
Unreferenced date April 2010 Distinguish2 Thurso River , New Zealand The River Thurso has Loch Rumsdale in Caithness as its source, about 26 kilometres south and 14 kilometres west of the burgh of Thurso , Caithness, and about 2 kilometres south of the railway line linking the burghs of Thurso and Wick, Caithness Wick with Inverness . At its source and until it reaches Loch More the river is known also as Strathmore Water. Caithness is in the Highland council area Highland area of Scotland . From Loch Rumsdale the river flows generally east southeast across about 4 kilometres until it is joined by Glut Water , and then generally northeast across about 7 kilometres until it enters the southern end of Loch More. On the loch s eastern side, towards its northern end, the river flows almost immediately into the western end of Loch Beg . Then from Loch Beg s eastern end the river flows east northeast across about 6 kilometres until it is joined by Little River, Caithness Little River . From Little River the River Thurso flows generally northward across about 19 kilometres until it reaches its mouth in Thurso Bay and the Atlantic Ocean . On its way it passes through the village of Halkirk , about 9 kilometres south of the burgh of Thurso, and through the burgh itself, which fronts the bay. The river is bridged twice by railways, three times by highways and twice by footways the third footbridge was recently destroyed by the river during severe flooding . About 4 kilometres south of Thurso burgh the river is bridged by the rail link between the burghs of Wick and Thurso. About 6 kilometres further south it is bridged by the rail link connecting both burghs with Inverness. The highways cross the river in the burgh of Thurso, in Halkirk, and at Westerdale , which is about 16 kilometres south of the burgh. The three footway crossings were within the burgh of Thurso. Coord 58 36 N 3 30 W display title region GB type river source GNS enwiki Category Rivers of Scotland Thurso Cat ... more details
Unreferenced auto yes date December 2009 The Ashley Gorge is a river gorge of the Ashley River, New Zealand Ashley River in Canterbury, New Zealand Canterbury , New Zealand . The river is bridged at the mouth of the gorge by the Inland Scenic Route , formerly designated State Highway 72. A popular picnic ground and camping area is adjacent to the bridge. Upstream of the gorge the river flows through the Lees Valley . Ashley Gorge is also the name of a small rural locality 2.5 km southwest of the bridge. Coord 43 13 41.95 S 172 13 45.24 E region NZ display title Waimakariri District New Zealand Category Geography of the Canterbury Region Category Canyons and gorges of New Zealand CanterburyNZ geo stub ... more details
Zirconium propionate is a white powder with molecular formula Zr CH sub 3 sub CH sub 2 sub COO sub 4 sub . Its structure is complex, but is believed to be based on Hydroxyl hydroxy bridged zirconium polymer s, with the propionate carboxyl group bonded to the zirconium. Propionate s are salt s or ester s of propionic acid . It is not soluble in water, but dissolves in a solution of isopropanol , ethanol and ethyl acetate . When tamped or untamped, it has a density of 1.14 g cm sup 3 sup or 0.98 g cm sup 3 sup respectively. It is used to promote adhesion in solvent based ink s. Impurities of Hafnium are commonly present. References http www.zrchem.com pdf MEL342.pdf Zirconium Propionate PDF Category Propionates Category Organozirconium compounds ar ... more details
File Loch Creran geograph.org.uk 53700.jpg thumb Loch Creran is a sea loch in Argyll , on the west coast of Scotland . It is about convert 10 km mi long from its head at Invercreran to its mouth on the Lynn of Lorne, part of Loch Linnhe . The loch separates the areas of Benderloch to the south and Appin to the north. The island of Eriska lies at the mouth of the loch. The loch is bridged at its narrowest point, at Creagan, by the A828 road . The village of Barcaldine, Argyll Barcaldine lies on the south shore of the loch. coord 56 31 38.8 N 5 20 21.2 W region GB type waterbody source dewiki display title DEFAULTSORT Creran, Loch Category Sea lochs of Scotland Category Geography of Argyll and Bute Argyll geo stub fr Loch Creran nn Loch Creran ... more details
Infobox river river name Kakanui River image name image size caption origin mouth basin countries New Zealand length elevation mouth elevation discharge watershed The Kakanui River is a river of North Otago , New Zealand , bridged by New Zealand State Highway 1 Highway 1 at Maheno, New Zealand Maheno and flowing into the Pacific Ocean at Kakanui . See also List of rivers of New Zealand References LINZ id name Kakanui River accessdate 12 July 2009 coord 45 12 S 170 54 E display title region NZ type river source GNS enwiki Category Rivers of the Otago Region Otago geo stub ... more details
Image OeraefajoekullMorning.jpg thumb right Sunrise at r fi on the glacier Skaftafellsj kull. r fasveit or r fi previously called Litlah ra is a western region in Austur Skaftafellss sla , between Brei amerkursandur and the river Skei ar , east of the village Kirkjub jarklaustur and south of the volcano r faj kull . In the Middle Ages , this region was called H ra or Litlah ra , but was deserted in the wake of the 1362 eruption of r faj kull and the subsequent flooding of the region. After these events the region was simply called r fi wilderness . For a long time, the region was very isolated since two large waterfalls hindered the pathway from both from the east and west. This isolation continued until J kuls Brei amerkursandi bridged the gap in 1967 and Skei ar rbr in was opened in 1974 with the Route 1 Iceland Ring Road . Skaftafell National Park is located in r fasveit and was established in 1967. coord missing Iceland DEFAULTSORT Oraefasveit Category Geography of Iceland Iceland geo stub is r fasveit ... more details
The River Annas is a minor river in Cumbria in northwest England . It is formed as the Kinmont Beck and Crookley Beck which drain the southwestern fell s of the Lake District , meet on the eastern edge of the village of Bootle, Cumbria Bootle . Their combined waters flow southwest towards Annaside on the Irish Sea coast. However longshore drift has diverted the river northwestwards parallel to the shore for a further 2km so that it enters the sea at Selker. This section of river is followed by the Cumbria Coastal Way . The river is bridged by the A595 road and the Cumbrian Coast Line Cumbrian coast railway line . ref Ordnance Survey 1 25,000 scale Explorer map sheet no OL6 The English Lakes South western area ref References reflist coord 54.2748 3.40534 display title Category Rivers of Cumbria Cumbria geo stub ... more details
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