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f1348113bce28083cb6def97fde5a3e65242904c | bettertonite is a white and translucent mineral. it | bettertonite is a white and translucent mineral. it has a vitreous and silky to pearly luster. it has a calculated density of 2.02 g/cm. bettertonite has perfect cleavage on {010}. bettertonite’s hardness and fracture were not observed. bettertonite is nonpleochroic and biaxially positive with α = 1.511 (1), β = 1.517 ... | wikipedia |
0e20582d6e09c3c5032a448539591f54a29564b5 | bettertonite is a mineral of the arsenate category, | bettertonite is a mineral of the arsenate category, named after john betterton. he is a museum geologist and mineralogist at haslemere educational museum in surrey, england. bettertonite is a white arsenate mineral with a formula of ・11h o. bettertonite is in the monoclinic system and has a heteropolyhedral layered str... | wikipedia |
01345ab678284c72a0588ec4f2eb2d0b7411c31a | the b46 nuclear bomb was an american high-yield | the b46 nuclear bomb was an american high-yield thermonuclear bomb which was designed and tested in the late 1950s. it was never deployed. though originally intended to be a production design, the b46 ended up being only an intermediate prototype of the b-53 and was test fired several times. these prototypes were known... | wikipedia |
a011364aa01116c470f8c3255214882f998981c5 | towards the end of 1955, consideration was given | towards the end of 1955, consideration was given to using the physics package of the tx-46 aerial bomb as a warhead for the usaf snark intercontinental cruise missile. consideration to use one of the army's redstone mrbm was also given. the xw-46/redstone was canceled in favor of the titan ii / w-53 combination in apri... | wikipedia |
8bbff016cc6ad36eaa84026e9c02effad10fb891 | the b46 design concepts were taken forwards into | the b46 design concepts were taken forwards into a new weapon design in 1959, the tx-53, which was redesignated the b53 nuclear bomb and w53 warhead. 50 b53 bombs were in us inactive reserves from 1997 to 2011, though none were actively deployed during that period. | wikipedia |
767d94f6efba3dedbaef7f4b56a5b2c7253bad53 | the b46 was test fired in operation hardtack | the b46 was test fired in operation hardtack i in 1958; the fission primary (see teller-ulam design) was test fired by itself in hardtack butternut with 81 kiloton estimated yield, the full weapon test fired in hardtack yellowwood and fizzled with only 330 kiloton yield, and was fired again in hardtack oak to full 8.9 ... | wikipedia |
cbb6ba778ab4b553822442ce2b8b5508956d6530 | the design history of the b46 apparently derives | the design history of the b46 apparently derives most immediately from the older, larger mark 21 nuclear bomb design, which was a design derivative of the shrimp design which was the first us solid fueled thermonuclear bomb test fired in the castle bravo test. | wikipedia |
5dce68c3db9cf07762c37199c720601d9b54aff2 | the b46 nuclear bomb (or mk-46) was an | the b46 nuclear bomb (or mk-46) was an american high-yield thermonuclear bomb which was designed and tested in the late 1950s. it was never deployed. though originally intended to be a production design, the b46 ended up being only an intermediate prototype of the b-53 and was test fired several times. these prototypes... | wikipedia |
c12ec7034ca169096b75b342b982cb495aa5aed7 | berkelium triiodide forms a yellow solid of the | berkelium triiodide forms a yellow solid of the trigonal crystal system, space group r3 (no. 148), lattice parameters a = 758.4 pm and c = 2087 pm. its crystal structure is the same as that of bismuth triiodide. | wikipedia |
a9b871cbffaec7b3db047e75317b11bdcb815f5e | in mechanical engineering, backlash, sometimes called lash, play, | in mechanical engineering, backlash, sometimes called lash, play, or slop, is a clearance or lost motion in a mechanism caused by gaps between the parts. it can be defined as "the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or ... | wikipedia |
d3a9f4393d1940e2f91b3392f626c2b60488e0a8 | however, backlash is undesirable in precision positioning applications | however, backlash is undesirable in precision positioning applications such as machine tool tables. it can be minimized by choosing ball screws or leadscrews with preloaded nuts, and mounting them in preloaded bearings. a preloaded bearing uses a spring and/or a second bearing to provide a compressive axial force that ... | wikipedia |
dacc345a08d704aa0003580e021493fee4c15c10 | backlash in gear couplings allows for slight angular | backlash in gear couplings allows for slight angular misalignment.there can be significant backlash in unsynchronized transmissions because of the intentional gap between the dogs in dog clutches. the gap is necessary to engage dogs when input shaft (engine) speed and output shaft (driveshaft) speed are imperfectly syn... | wikipedia |
61ca91c0b0ec012d61fae9d2e30f0bc11443f775 | minimum backlash is calculated as the minimum transverse | minimum backlash is calculated as the minimum transverse backlash at the operating pitch circle allowable when the gear teeth with the greatest allowable functional tooth thickness are in mesh with the pinion teeth with their greatest allowable functional tooth thickness, at the smallest allowable center distance, unde... | wikipedia |
e9fe4a15f82915dc1a1c0bd1dcca1f1d89f48b48 | some motion controllers include backlash compensation. compensation may | some motion controllers include backlash compensation. compensation may be achieved by simply adding extra compensating motion (as described earlier) or by sensing the load's position in a closed loop control scheme. the dynamic response of backlash itself, essentially a delay, makes the position loop less stable and t... | wikipedia |
bf375df250f0001a38e52ae1ff7dd7defb304fc3 | the simplest cncs, such as microlathes or manual-to-cnc | the simplest cncs, such as microlathes or manual-to-cnc conversions, which use nut-and-acme-screw drives can be programmed to correct for the total backlash on each axis, so that the machine's control system will automatically move the extra distance required to take up the slack when it changes directions. this progra... | wikipedia |
547aad06896046ba47c5272b571291b6b651e2f1 | the next-more complex method than the simple nut | the next-more complex method than the simple nut is a split nut, whose halves can be adjusted, and locked with screws, so that the two sides ride, respectively, against leftward thread and the other side rides rightward faces. notice the analogy here with the radio dial example using split gears, where the split halves... | wikipedia |
ead5864229b5c4fb99eadc4c362ef84ca87dad7f | most machine slides for many decades, and many | most machine slides for many decades, and many even today, have been simple (but accurate) cast-iron linear bearing surfaces, such as a dovetail- or box-slide, with an acme leadscrew drive. with just a simple nut, some backlash is inevitable. on manual (non- cnc) machine tools, a machinist's means for compensating for ... | wikipedia |
9b0e11627877f47881884a6d99b1a08d7e12812f | another area where backlash matters is in leadscrews. | another area where backlash matters is in leadscrews. again, as with the gear train example, the culprit is lost motion when reversing a mechanism that is supposed to transmit motion accurately. instead of gear teeth, the context is screw threads. the linear sliding axes (machine slides) of machine tools are an example... | wikipedia |
623eaf899abe3413be42f1050f0a022b5e2f36af | one half of the gear is fixed to | one half of the gear is fixed to its shaft while the other half of the gear is allowed to turn on the shaft, but pre-loaded in rotation by small coil springs that rotate the free gear relative to the fixed gear. in this way, the spring compression rotates the free gear until all of the backlash in the system has been t... | wikipedia |
ee22ed95c600139b5bc0f11dc4d642605cd0eada | in a gear train, backlash is cumulative. when | in a gear train, backlash is cumulative. when a gear-train is reversed the driving gear is turned a short distance, equal to the total of all the backlashes, before the final driven gear begins to rotate. at low power outputs, backlash results in inaccurate calculation from the small errors introduced at each change of... | wikipedia |
7e78d091096230923396a4d27c57752f1564045b | as a rule of thumb the average backlash | as a rule of thumb the average backlash is defined as 0.04 divided by the diametral pitch; the minimum being 0.03 divided by the diametral pitch and the maximum 0.05 divided by the diametral pitch. in metric, you can just multiply the values with the module: | wikipedia |
fbe4e5b79c2f69494cd3bfe8dab127ecca885d9c | standard practice is to make allowance for half | standard practice is to make allowance for half the backlash in the tooth thickness of each gear. however, if the pinion (the smaller of the two gears) is significantly smaller than the gear it is meshing with then it is common practice to account for all of the backlash in the larger gear. this maintains as much stren... | wikipedia |
144c31625b2cd049529c64347adb7bfdfcacbd98 | factors affecting the amount of backlash required in | factors affecting the amount of backlash required in a gear train include errors in profile, pitch, tooth thickness, helix angle and center distance, and run-out. the greater the accuracy the smaller the backlash needed. backlash is most commonly created by cutting the teeth deeper into the gears than the ideal depth. ... | wikipedia |
13a465f61d1cbbab79b2d806239308b472422d9c | depending on the application, backlash may or may | depending on the application, backlash may or may not be desirable. some amount of backlash is unavoidable in nearly all reversing mechanical couplings, although its effects can be negated or compensated for. in many applications, the theoretical ideal would be zero backlash, but in actual practice some backlash must b... | wikipedia |
368a2a8d3c0dfc46228c3ab4c2e53d9fc679144d | in mechanical engineering, backlash, sometimes called lash, play, | in mechanical engineering, backlash, sometimes called lash, play, or slop, is a clearance or lost motion in a mechanism caused by gaps between the parts. it can be defined as "the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or ... | wikipedia |
e518adf6dcabad1ba7de6e3f841acdc2885379c4 | the argyle bridge is a heritage-listed road bridge | the argyle bridge is a heritage-listed road bridge that carries cumberland street across the argyle cut and argyle street in the inner-city sydney suburb of the rocks in the city of sydney local government area of new south wales, australia. it was built from 1911 to 1912. it is also known to include the argyle stairs.... | wikipedia |
fff4838651e63844ff4af5548de42de3d66f3aa1 | the argyle bridge is of historical significance as | the argyle bridge is of historical significance as evidence of the town planning initiatives to improve the provision of access and infrastructure, including the urban improvements of the sydney harbour trust in the early 1900s and the changes to the road pattern and surrounds involved in the construction of the sydney... | wikipedia |
c702483a966f0a7c7dcfc2084757a5a4e4e8aabe | as of 30 march 2011, the argyle bridge | as of 30 march 2011, the argyle bridge and site are of state heritage significance for their historical and scientific cultural values. the site and building are also of state heritage significance for their contribution to the rocks area, which is of state heritage significance in its own right. the argyle bridge has ... | wikipedia |
67f2e6aa6bd44ba6f0ce16c6457c0e7dbc121464 | as at 4 february 2009, in 2008 remedial | as at 4 february 2009, in 2008 remedial works were carried out on the bridge to repair structural cracks and areas of concrete cancer. at the same time the bridge was thoroughly inspected for any other damage and necessary repairs undertaken. the parapet of the part of the bridge directly over argyle street was replace... | wikipedia |
79e7d9496e5de3704d731562e91753508e623fa6 | the site includes the 1911 road bridge at | the site includes the 1911 road bridge at cumberland street, abutments to the bridge with small obelisk-shaped pylons on either side of the road (at the north and south approaches to the bridge), and intact original light fittings. the parapet of the part of the bridge directly over argyle street was replaced in the 19... | wikipedia |
39acbb82670d1b84c75ec50a33e66d9cfca28821 | as part of the sydney harbour trust's improvements, | as part of the sydney harbour trust's improvements, gloucester and cumberland streets were realigned, and the two road bridges over the argyle cut replaced by a single bridge at cumberland street in 1911–12. cumberland street had previously been located to the west of its current location. the cumberland street bridge ... | wikipedia |
f3b366711d9a71be0d0d4a7113c39e6ea09d02c1 | the original argyle bridges were built for gloucester | the original argyle bridges were built for gloucester street in 1862, cumberland street in 1864 and princes street in 1867–68. the princes street bridge was demolished as part of the sydney harbour bridge construction. the inscription from the princes street bridge identifying charles moore is now relocated on the argy... | wikipedia |
e518adf6dcabad1ba7de6e3f841acdc2885379c4 | the argyle bridge is a heritage-listed road bridge | the argyle bridge is a heritage-listed road bridge that carries cumberland street across the argyle cut and argyle street in the inner-city sydney suburb of the rocks in the city of sydney local government area of new south wales, australia. it was built from 1911 to 1912. it is also known to include the argyle stairs.... | wikipedia |
c44a996cbd460e7be8a08e1b71cb0ce1f188d6c0 | william stagg is an english retired footballer who | william stagg is an english retired footballer who played as a left winger in the football league for brentford. he also played in sweden and the united states. stagg's 5 ft 4 in (1.63 m) height ties him with hughie reed for the record of shortest brentford player. | wikipedia |
2f5f83a4cd79ee53e576b1950bf5803f0c8376bf | a graduate of the brentford youth team, stagg | a graduate of the brentford youth team, stagg made four appearances for the club during the 1974–75 fourth division season at the age of 16 and dropped into non-league football upon his release at the end of the campaign. between 1975 and 1990 he played for wealdstone (two spells), staines town, aylesbury united, hazel... | wikipedia |
8c50289d56f3d8148fe2f3e416795b7474030b9f | william stagg (born 17 october 1957) is an | william stagg (born 17 october 1957) is an english retired footballer who played as a left winger in the football league for brentford. he also played in sweden and the united states. stagg's 5 ft 4 in (1.63 m) height ties him with hughie reed for the record of shortest brentford player. | wikipedia |
82f8cbf031122649b1501e14ab23f55d1bc225ca | avraham menchel was an israeli footballer. he is | avraham menchel was an israeli footballer. he is best known for his years at maccabi haifa where he started his football career as well as his managerial career. menchel is widely regarded as one of the best haifa players to ever don the green shirt. he died on 24 november 2023, at the age of 87. | wikipedia |
b1b0c1e25ae9253588b6f9fd84953ef9f1184503 | avraham menchel (hebrew: אברהם מנצ'ל; 12 december 1935 | avraham menchel (hebrew: אברהם מנצ'ל; 12 december 1935 – 24 november 2023) was an israeli footballer. he is best known for his years at maccabi haifa where he started his football career as well as his managerial career. menchel is widely regarded as one of the best haifa players to ever don the green shirt. he died on... | wikipedia |
a5da335f6d6ec925fe9ab664de1115a72edd8cb2 | bis-gamma-glutamylcystine reductase is an enzyme that catalyzes the | bis-gamma-glutamylcystine reductase is an enzyme that catalyzes the chemical reaction thus, the two substrates of this enzyme are gamma-glutamylcysteine and nicotinamide adenine dinucleotide phosphate ion, whereas its 3 products are bis-gamma-glutamylcystine, nicotinamide adenine dinucleotide phosphate, and hydrogen io... | wikipedia |
24beb9787276f705354f0b10c588b96c4375f923 | this enzyme belongs to the family of oxidoreductases, | this enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with nad+ or nadp+ as acceptor. the systematic name of this enzyme class is gamma-glutamylcysteine:nadp+ oxidoreductase. this enzyme is also called nadph2:bis-gamma-glutamylcysteine oxidoreductase. this enzyme pa... | wikipedia |
517bf8a59186171862df65a8778b0db315cf56b0 | thus, the two substrates of this enzyme are | thus, the two substrates of this enzyme are gamma-glutamylcysteine and nicotinamide adenine dinucleotide phosphate ion, whereas its 3 products are bis-gamma-glutamylcystine, nicotinamide adenine dinucleotide phosphate, and hydrogen ion. | wikipedia |
77ddc17840e8074e867a76222042b1cb90ecc19e | in february 2015, tackie's stalking conviction was reversed | in february 2015, tackie's stalking conviction was reversed in bronx county court in new york. the threat communicated "don't let me use my boxing skills on you" apparently did not rise to the legal requirement to uphold his conviction. http://law.justia.com/cases/new-york/other-courts/2015/2015-ny-slip-op-50117-u.html | wikipedia |
c32f6ad569884a559acac959ceddc7fd45d669ac | known as "wonder", tackie turned pro in 1994 | known as "wonder", tackie turned pro in 1994 and won his first 18 fights before losing a decision to gregorio vargas in 1999. in 2002, he took on kostya tszyu for the unified wbc, wba and ibf light welterweight titles but lost a decision. he lost his next two fights to sharmba mitchell and ricky hatton. he lost to matt... | wikipedia |
b8071bb2b5237da1875238d0b8813231ba8539e9 | benjamin tackie (born 23 july 1973) is a | benjamin tackie (born 23 july 1973) is a ghanaian former professional boxer and world title challenger. he was known for his excellent chin and ability to throw a high volume of punches. all but one of his losses came via decision. | wikipedia |
d1aa469714eaaf947d8147ca52d2fdea4c5ad6e7 | 1160 illyria, provisional designation 1929 rl, is a | 1160 illyria, provisional designation 1929 rl, is a stony maria asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. it was discovered on 9 september 1929, by german astronomer karl reinmuth at the heidelberg observatory in southwest germany. the asteroid was named after the ... | wikipedia |
02bf458267d58a533f38204e9b5aec5da8cda6a6 | this minor planet was named after illyria, an | this minor planet was named after illyria, an ancient region on the balkans which borders the adriatic sea. the official naming citation was mentioned in the names of the minor planets by paul herget in 1955 (h 108). | wikipedia |
6c3fb7cea57af4265989374b4219c90824649c69 | the collaborative asteroid lightcurve link assumes an albedo | the collaborative asteroid lightcurve link assumes an albedo of 0.21, derived from the parent body of the eunomia family, and calculates a diameter of 13.88 kilometers based on an absolute magnitude of 11.6. | wikipedia |
f8eca86c0cfea8be5cee53ca496801bc6fe13026 | according to the surveys carried out by the | according to the surveys carried out by the japanese akari satellite and the neowise mission of nasa's wide-field infrared survey explorer, illyria measures between 12.73 and 14.767 kilometers in diameter and its surface has an albedo between 0.2242 and 0.349. | wikipedia |
9536b127cc31b971d51680931bc87459ded7d002 | in 2013, an international study also modeled the | in 2013, an international study also modeled the asteroid's lightcurve from photometric data. it gave a concurring period of 4.10295 hours and determined a partial spin axis of (n.a., 47.0°) in ecliptic coordinates (λ, β). | wikipedia |
2e84e8b85cd75d47af9185f5f6949d47e04c7b46 | several rotational lightcurves of illyria have been obtained | several rotational lightcurves of illyria have been obtained from photometric observations since 2007. lightcurve analysis gave a consolidated rotation period of 4.1025 hours with a brightness amplitude between 0.56 and 0.91 magnitude (u=3). | wikipedia |
be940b47835930cd9064b6870650d926942dabb4 | illyria orbits the sun in the central asteroid | illyria orbits the sun in the central asteroid belt at a distance of 2.3–2.9 au once every 4 years and 1 month (1,497 days; semi-major axis of 2.56 au). its orbit has an eccentricity of 0.12 and an inclination of 15 ° with respect to the ecliptic. the body's observation arc begins with a recovery observation at lowell ... | wikipedia |
7cb096283f20e3d6dffc5f5b0fc6c157e6e23f3b | based on the hierarchical clustering method, which uses | based on the hierarchical clustering method, which uses a body's proper orbital elements, illyria is a member of the maria family (506), a large intermediate belt family of stony asteroids. it has also been grouped into the eunomia family (502), an even larger family with more than 5,000 known members. | wikipedia |
d1aa469714eaaf947d8147ca52d2fdea4c5ad6e7 | 1160 illyria, provisional designation 1929 rl, is a | 1160 illyria, provisional designation 1929 rl, is a stony maria asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. it was discovered on 9 september 1929, by german astronomer karl reinmuth at the heidelberg observatory in southwest germany. the asteroid was named after the ... | wikipedia |
1d529dfc4c70e8b7372d8595c68fe9fdbd5c3af2 | in mathematics, the atiyah conjecture on configurations is | in mathematics, the atiyah conjecture on configurations is a conjecture introduced by atiyah (2000, 2001) stating that a certain n by n matrix depending on n points in r3 is always non-singular. | wikipedia |
8aacab2ed3d8e4e4190c9095efd0287c92150e56 | robert martin johnson is an american former professional | robert martin johnson is an american former professional ice hockey goaltender. he played 23 games in the national hockey league with the st. louis blues and pittsburgh penguins from 1972 to 1975, and 42 games in the world hockey association with the cleveland crusaders, denver spurs and ottawa civics from 1975 to 1976... | wikipedia |
d801b6a3191ee43862d0fed02e23f417bb9d4dec | during his career, johnson played with the pittsburgh | during his career, johnson played with the pittsburgh penguins and st. louis blues. he also played 42 games in the world hockey association, with the denver spurs / ottawa civics and the cleveland crusaders. | wikipedia |
65b7a4a852acfaf9f92c5d003d04f27927e5f372 | robert martin johnson (born november 12, 1948) is | robert martin johnson (born november 12, 1948) is an american former professional ice hockey goaltender. he played 23 games in the national hockey league with the st. louis blues and pittsburgh penguins from 1972 to 1975, and 42 games in the world hockey association with the cleveland crusaders, denver spurs and ottawa... | wikipedia |
ded067f7cb838cf2a930f5a8ca30cf056e567ddb | in enzymology, a biuret amidohydrolase is an enzyme | in enzymology, a biuret amidohydrolase is an enzyme that catalyzes the chemical reaction thus, the two substrates of this enzyme are biuret and h2o, whereas its 3 products are urea, co2, and nh3. this enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specificall... | wikipedia |
72e146c3bb2571033beb0a55f4c51d268a126ebc | this enzyme belongs to the family of hydrolases, | this enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. the systematic name of this enzyme class is biuret amidohydrolase. this enzyme participates in atrazine degradation. | wikipedia |
fd053f615579fc6797eae022d4006e454945c84e | in 2013 a fairly short, fully formal proof | in 2013 a fairly short, fully formal proof using homotopy type theory as a mathematical foundation and an agda variant as a proof assistant was announced by peter lefanu lumsdaine; this became theorem 8.10.2 of homotopy type theory – univalent foundations of mathematics. this induces an internal proof for any infinity-... | wikipedia |
52a847907804c16d7892edd3a17e4634ab1f32b1 | however the third paper of blakers and massey | however the third paper of blakers and massey in this area determines the critical, i.e., first non-zero, triad homotopy group as a tensor product, under a number of assumptions, including some simple connectivity. this condition and some dimension conditions were relaxed in work of ronald brown and jean-louis loday. t... | wikipedia |
1cc5df19b44f5e4f23433c4f834c9602a507277e | aristide benoît zogbo is an ivorian former professional | aristide benoît zogbo is an ivorian former professional footballer who played as a goalkeeper. he made three appearances for the ivory coast national team and was part of the squads at the 2010 africa cup of nations and the 2010 fifa world cup. | wikipedia |
e70ff197bf64c97d872f348c46ab207462b5a14b | aristide benoît zogbo (born 30 december 1981) is | aristide benoît zogbo (born 30 december 1981) is an ivorian former professional footballer who played as a goalkeeper. he made three appearances for the ivory coast national team and was part of the squads at the 2010 africa cup of nations and the 2010 fifa world cup. | wikipedia |
6af237e292efcc3f8c8a7916026996ab8c18c399 | (75482) 1999 xc173 is a stony vestian asteroid | (75482) 1999 xc173 is a stony vestian asteroid and an exceptionally slow rotating body from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. it was discovered on 10 december 1999, by linear at lincoln laboratory's experimental test site in socorro, new mexico, united states. | wikipedia |
ac2e6f7c63ee5c00febb157464c85e8acd929fc8 | a rotational lightcurve was obtained for this asteroid | a rotational lightcurve was obtained for this asteroid from photometric observations at the californian palomar transient factory in september 2013. it gave a rotation period of 1234 hours with an estimated error margin of ±90 hours. as of 2016, it is the 6th slowest rotating minor planet known to exist. its high brigh... | wikipedia |
663385ffc46dc9c6536148b3a94f5d9375c24c60 | the body is classified as a s-type member | the body is classified as a s-type member of the vesta family by the collaborative asteroid lightcurve link ' s light curve data base (lcdb). it orbits the sun at a distance of 2.2–2.5 au once every 3 years and 8 months (1,328 days). its orbit has an eccentricity of 0.08 and an inclination of 6 ° with respect to the ec... | wikipedia |
a187bad31a7b75337e9e427fd88c035a6f5b8f22 | (75482) 1999 xc is a stony vestian asteroid | (75482) 1999 xc is a stony vestian asteroid and an exceptionally slow rotating body from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. it was discovered on 10 december 1999, by linear at lincoln laboratory's experimental test site in socorro, new mexico, united states. | wikipedia |
d24ddea402467f005de7d145c0b1dc8d5b772822 | ashley van zeeland is an american neuroscientist, focusing | ashley van zeeland is an american neuroscientist, focusing on genomics, genetics, and biotechnology in the fields of autism and anorexia nervosa. her work on autism revealed that genetic variants were linked to different communication pathways within the brain, and her work related anorexia nervosa to an enzyme regulat... | wikipedia |
1833f9094cc42ee3c6ec4769f30a1ff0e915c282 | in 2013, van zeeland was named a san | in 2013, van zeeland was named a san diego young influential. the san diego young influential's award "highlights young entrepreneurs and successful business leaders who are the next generation of top influentials, san diego county's young movers and shakers." in 2012, she was named a pitchfest finalist by the san dieg... | wikipedia |
b3b5235292ce3714c37f5dd74dd6105124dce155 | in addition to co-founding cypher genomics, van zeeland | in addition to co-founding cypher genomics, van zeeland is also a published author on subjects of both anorexia and autism. as mentioned in the abstract, van zeeland's work with autism showed that there are genetic variants linked in different communication pathways. the study was published in science translational med... | wikipedia |
d17094fdff759c06a1812319f1e102646302a05c | after receiving her phd, she worked as a | after receiving her phd, she worked as a consultant on a consortium study to investigate mitochondrial dysfunction in children with autism at the university of california san diego from 2009 to 2010. she went on to attain her mba from the university of california, san diego rady school of management in 2012. while at r... | wikipedia |
fb6503f5717f835e6090fb17e22de187a789feee | van zeeland received her ba in psychology from | van zeeland received her ba in psychology from the university of colorado boulder in 2002. afterwards, she worked from 2002 to 2004 as a project coordinator for the colorado learning disabilities twin study at the university of denver. van zeeland also worked as a project coordinator for the ucla autism center of excel... | wikipedia |
9de75a2c61086961615bed134a692593d80378c6 | she co-founded cypher genomics in march 2011 with | she co-founded cypher genomics in march 2011 with eric topol, nicholas schork, and ali torkamani in la jolla, ca. she is the ceo of cypher genomics, which is partnering with the clinic for special children in strasburg, pennsylvania to diagnose rare genetic diseases among amish and mennonite patients, a population with... | wikipedia |
2cac0ebc122dde7d4b5b148f0fabb17a93742989 | ashley van zeeland is an american neuroscientist, focusing | ashley van zeeland is an american neuroscientist, focusing on genomics, genetics, and biotechnology in the fields of autism and anorexia nervosa. her work on autism revealed that genetic variants were linked to different communication pathways within the brain, and her work related anorexia nervosa to an enzyme regulat... | wikipedia |
14616a27b91ca379a8d72250e625eb07754216ba | 1,1-diphenylethylene mediates the radical polymerization of methyl acrylate | 1,1-diphenylethylene mediates the radical polymerization of methyl acrylate or styrene. meditation by 1,1-diphenylethylene generates low molecular weight polymer by a termination reaction. dibenzofulvene is an analogue of a 1,1-diphenylethylene. | wikipedia |
84d6dfbd5edf953bb30b5aeb5925fca41de784e3 | as the bridge carries a public right-of-way, a | as the bridge carries a public right-of-way, a government inquiry was launched on 17 january 2023 into whether the right-of-way should be abolished to allow the bridge to be demolished. in may 2023, it was announced that the public right-of-way must be maintained and that the council would not be allowed to remove the ... | wikipedia |
567ec383d84d8613cfbc5a31744dbd6643172619 | in april 2022, north tyneside council approved plans | in april 2022, north tyneside council approved plans to demolish the bridge, claiming it was in poor condition and nearing the end of its natural lifespan. it estimated restoration of the bridge would cost £360,000 while demolition would cost £63,000 and a replacement would cost £1 million. the council also stated that... | wikipedia |
4e496edffc393cf2ebf9feff34ad0b58e8c2fe3b | brissaud's reflex is a clinical sign in which | brissaud's reflex is a clinical sign in which stroking the sole of the foot elicits contraction of tensor fasciae latae. this can occur when there is no movement of the toes, and is part of the extensor plantar response. the sign is named after Édouard brissaud. | wikipedia |
df1c2e8b5fe42108bfcce15f886200348e79842e | brissaud's reflex is a clinical sign in which | brissaud's reflex is a clinical sign in which stroking the sole of the foot elicits contraction of tensor fasciae latae. this can occur when there is no movement of the toes, and is part of the extensor plantar response (babinski's sign). | wikipedia |
03eb4f4d1591e64538be6ab122b0e91365a672cf | bw-723c86 is a tryptamine derivative drug which acts | bw-723c86 is a tryptamine derivative drug which acts as a 5-ht2b receptor agonist. it has anxiolytic effects in animal studies, and is also used for investigating the function of the 5-ht2b receptor in a range of other tissues. bw-723c86 is actually a mixed 5-ht2b/5-ht2c agonist, and while it has good selectivity over ... | wikipedia |
857ffd6de078cc98245ac6300948aa98d1e5e17d | an in vitro study including assay on normal | an in vitro study including assay on normal (healthy) human melanocytes found that bw-723c86 causes skin whitening. the mechanism of action of bw-723c86 is decreasing the expression of mitf which in turn, decreases the expression of the melanin main synthesizing enzymes: tyrosinase, trp-1 and trp-2. bw-723c86 is not cy... | wikipedia |
10faa72f85455aece119929d4788859618b6d8e6 | bw-723c86 is actually a mixed 5-ht /5-ht agonist, | bw-723c86 is actually a mixed 5-ht /5-ht agonist, and while it has good selectivity over 5-ht and other serotonin receptor subtypes, it is around only 3 times as selective for 2b compared to 2c and so is much less selective than most research ligands, but no superior 5-ht agonist was available until the potent and sele... | wikipedia |
58707362f5a684138f9bf8d00663521a28415132 | bw-723c86 is a tryptamine derivative drug which acts | bw-723c86 is a tryptamine derivative drug which acts as a 5-ht receptor agonist. it has anxiolytic effects in animal studies, and is also used for investigating the function of the 5-ht receptor in a range of other tissues. | wikipedia |
335829a09b7a9f1522addb5ec14cc14261dec1a5 | 1623 vivian is a carbonaceous themis asteroid from | 1623 vivian is a carbonaceous themis asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. it was discovered on 9 august 1948, by south african astronomer ernest johnson at johannesburg observatory in south africa. it was named after vivian hirst, daughter of british astronomer w... | wikipedia |
2f37c53777396a53086336869939a70302bb40ed | this minor planet was named in honor of | this minor planet was named in honor of vivian hirst, daughter of british astronomer william p. hirst, receiver of the astronomical society of southern africa 's gill medal and after whom the minor planet 3172 hirst is named. hirst calculated the preliminary orbit for this and several other minor planets discovered by ... | wikipedia |
efda36932898af431b588a386025db99dc80662a | according to the surveys carried out by the | according to the surveys carried out by the japanese akari satellite and nasa's wide-field infrared survey explorer with its subsequent neowise mission, vivian measures between 24.77 and 29.98 kilometers in diameter, and its surface has an albedo between 0.075 and 0.08. the collaborative asteroid lightcurve link assume... | wikipedia |
c664be4041c62ba59dd385796feb3256135e6b2a | in march 2006, a rotational lightcurve of vivian | in march 2006, a rotational lightcurve of vivian was obtained by american astronomer lawrence molnar at the calvin–rehoboth observatory in new mexico. it gave it a rotation period of 20.5209 hours with a brightness variation of 0.85 magnitude (u=3-). modeled lightcurve data gave a concurring period of 20.5235 hours (u=... | wikipedia |
2c9c798cac8f180563e592e861a8499028d2b0ee | vivian is a c-type asteroid and member of | vivian is a c-type asteroid and member of the themis family, a large family of asteroids with nearly coplanar ecliptical orbits. it orbits the sun in the outer main-belt at a distance of 2.7–3.6 au once every 5 years and 7 months (2,035 days). its orbit has an eccentricity of 0.16 and an inclination of 2 ° with respect... | wikipedia |
340583fa96299ca3bee6f11d94f639490755e353 | 1623 vivian (provisional designation 1948 pl) is a | 1623 vivian (provisional designation 1948 pl) is a carbonaceous themis asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. it was discovered on 9 august 1948, by south african astronomer ernest johnson at johannesburg observatory in south africa. it was named after vivian hirst... | wikipedia |
7b9f8adbbf9e3577966fbdb95123eaceb058bae1 | in mathematics, the 15 theorem or conway–schneeberger fifteen | in mathematics, the 15 theorem or conway–schneeberger fifteen theorem, proved by john h. conway and w. a. schneeberger in 1993, states that if a positive definite quadratic form with integer matrix represents all positive integers up to 15, then it represents all positive integers. the proof was complicated, and was ne... | wikipedia |
cc82dc71eb1b8a8be58af93cdc23683046f59cff | bhargava has found analogous criteria for a quadratic | bhargava has found analogous criteria for a quadratic form with integral matrix to represent all primes (the set {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 67, 73} (sequence a154363 in the oeis)) and for such a quadratic form to represent all positive odd integers (the set {1, 3, 5, 7, 11, 15, 33} (sequen... | wikipedia |
5aca7bb0c5ba859dc220fece35b7385ba8f2a264 | the 290 theorem says a positive definite integral | the 290 theorem says a positive definite integral quadratic form is universal if it takes the numbers from 1 to 290 as values. a more precise version states that, if an integer valued integral quadratic form represents all the numbers 1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 17, 19, 21, 22, 23, 26, 29, 30, 31, 34, 35, 37, 42,... | wikipedia |
73a723266002ad82a98fdcb171d113482d09d079 | is universal, because every positive integer can be | is universal, because every positive integer can be written as a sum of 4 squares, by lagrange's four-square theorem. by the 15 theorem, to verify this, it is sufficient to check that every positive integer up to 15 is a sum of 4 squares. (this does not give an alternative proof of lagrange's theorem, because lagrange'... | wikipedia |
78515c76bda14603b837af3c7b33385c5f588fb7 | a positive integral quadratic form taking all positive | a positive integral quadratic form taking all positive integers as values is called universal. the 15 theorem says that a quadratic form with integer matrix is universal if it takes the numbers from 1 to 15 as values. a more precise version says that, if a positive definite quadratic form with integral matrix takes the... | wikipedia |
6eae4255576fb9b7e296103bc74ed237667cd704 | we get an integral quadratic form whenever the | we get an integral quadratic form whenever the matrix entries q i j {\displaystyle q_{ij}} are integers; then q {\displaystyle q} is said to have integer matrix. however, q {\displaystyle q} will still be an integral quadratic form if the off-diagonal entries q i j {\displaystyle q_{ij}} are integers divided by 2, whil... | wikipedia |
7fd3e465ac1a595cdcf2249f5598670d5dc71a1a | this function is called a quadratic form. we | this function is called a quadratic form. we say q {\displaystyle q} is positive definite if q (x) > 0 {\displaystyle q(x)>0} whenever x ≠ 0 {\displaystyle x\neq 0}. if q (x) {\displaystyle q(x)} is always an integer, we call the function q {\displaystyle q} an integral quadratic form. | wikipedia |
5b4ce213e66e9bddfad85be5db3c7876009a7c13 | bhargava used the occasion of his receiving the | bhargava used the occasion of his receiving the 2005 sastra ramanujan prize to announce that he and jonathan p. hanke had cracked conway's conjecture that a similar theorem holds for integral quadratic forms, with the constant 15 replaced by 290. the proof has since appeared in preprint form. | wikipedia |
2bc925b01e396fdfcb0c7f039327ec275720760a | in mathematics, the 15 theorem or conway–schneeberger fifteen | in mathematics, the 15 theorem or conway–schneeberger fifteen theorem, proved by john h. conway and w. a. schneeberger in 1993, states that if a positive definite quadratic form with integer matrix represents all positive integers up to 15, then it represents all positive integers. the proof was complicated, and was ne... | wikipedia |
f2f4b857eaeff0ae11dc2f2f6358e328b1679d80 | in mathematics, a natural number n is a | in mathematics, a natural number n is a blum integer if n = p × q is a semiprime for which p and q are distinct prime numbers congruent to 3 mod 4. that is, p and q must be of the form 4t + 3, for some integer t. integers of this form are referred to as blum primes. this means that the factors of a blum integer are gau... | wikipedia |
2518dde400ea561f0ea7554e8b9a443f2fcd2059 | before modern factoring algorithms, such as mpqs and | before modern factoring algorithms, such as mpqs and nfs, were developed, it was thought to be useful to select blum integers as rsa moduli. this is no longer regarded as a useful precaution, since mpqs and nfs are able to factor blum integers with the same ease as rsa moduli constructed from randomly selected primes. | wikipedia |
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