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1 ved to have solved "The Puzzle of The King's Crown".
2 aying goes "heavy is the head that wears the crown".
3 conia abutments with an all-ceramic zirconia crown).
4 a proximate sister group of the gnathostome crown.
5 kieria is recovered closer to the aculiferan crown.
6 nd the respiration rates of leaves and whole crowns.
7 on the wear behavior of monolithic zirconia crowns.
8 izontal top connectors and the TM-attachment crowns.
9 iding canopy gaps and moving toward emergent crowns.
10 th reported fractographic analyses of failed crowns.
11 with paraquats than the analogous dibenzo-30-crown-10-based cryptand previously studied; however, the
12 defined by the three oxygen atoms of the 18-crown-3 moiety, thus enabling it to establish three H-bo
13 [U(Tren(TIPS) )(PH)][Na(12C4)2 ] (5, 12C4=12-crown-4 ether) with [U{N(CH2 CH2 NSiMe2 Bu(t) )2 CH2 CH2
18 f KCH2 C6 H5 and two equivalents of benzo-15-crown-5 ether (B15C5) afforded an unprecedented example
19 dine structure covalently linked to benzo-15-crown-5 ether motifs exhibit remarkable cooperative reco
25 candidate, an anthracene substituted aza-18-crown-6 ether, is shown to respond in the dry phase with
28 derivatives in the presence of K(+) and [18]crown-6 induces intramolecular migration of the alkenyl
29 y diol at 1 mol L(-1) in combination with 18-crown-6 is able to produce an 18-fold increase in the re
30 fforts following his discovery of dibenzo-18-crown-6 until his retirement to synthesis of cyclic poly
31 eophilic fluorination in combination with 18-crown-6 via two hydrogen bonds to the S(N)2 transition s
34 ion analysis of the sodium salt, [{Na(+) (18-crown-6)(THF)(2) }(3) {Na(+) (18-crown-6)(THF)}(1 a(2-)
35 p(2-)) complex, [((dipp)ap)(2)UO(2)THF][K(18-crown-6)(THF)(2)](2)(3-ap crown) show that reduction eve
36 dipp) isq)2 Nd(S5 )] (2-isq crown) and [K(18-crown-6)(THF)][((dipp) isq)2 Nd(Se5 )] (3-isq crown), wh
38 [{Na(+) (18-crown-6)(THF)(2) }(3) {Na(+) (18-crown-6)(THF)}(1 a(2-) )(2) ], revealed the presence of
39 ms the tetraanionic N(2) complex [K(2)][K(18-crown-6)](2)((tBu)pyrr(2)py)Fe](2)(mu(2)-eta(1):eta(1)-N
40 2 ][((dipp) ap)2 Nd(THF)2 ] (1-ap) and [K(18-crown-6)][((dipp) ap)2 Nd(THF)2 ] (1-ap crown) species.
41 ng the iminosemiquinone metallocycles, [K(18-crown-6)][((dipp) isq)2 Nd(S5 )] (2-isq crown) and [K(18
42 d as solvent-separated ion pairs with {Na(18-crown-6)THF(2) }(+) and {K(18-crown-6)THF(2) }(+) counte
43 rs with {Na(18-crown-6)THF(2) }(+) and {K(18-crown-6)THF(2) }(+) counterions and crystallographically
44 solated as a contact-ion complex with {Cs(18-crown-6)}(+) cations, thereby adding the effect of metal
46 f 1 a(-) is observed, whereas in [{Cs(+) (18-crown-6)}(2) (1 a(2-) )], two Cs(+) ions bind to both th
47 exchange to be turned off by addition of 18-crown-6, which binds the equilibrator in a nonnucleophil
48 fector units, e.g., an antifuel strand or 18-crown-6-ether, reconfiguration to the original CDNs is d
49 oncovalent reagent-commercially available 18-crown-6-facilitates catalytic base-free addition of seve
50 us organic cages as the anionic parts and 18-crown-6/potassium ion complexes as the cationic parts.
51 l occlusion near the origin of the mammalian crown(8,9), therians evolved a tribosphenic molar with a
52 and 9 of cis(4,4'-)-dicarbomethoxydibenzo-27-crown-9 with tri- and tetra-(ethyleneoxy) linkages trans
61 .e., titanium abutments with a metal-ceramic crown and zirconia abutments with an all-ceramic zirconi
62 delivered a (13) C-CO(2) pulse to whole tree crowns and chased that pulse in the respiration of leave
64 K(18-crown-6)][((dipp) isq)2 Nd(S5 )] (2-isq crown) and [K(18-crown-6)(THF)][((dipp) isq)2 Nd(Se5 )]
65 molars is extracted from separated roots and crowns, and quantitative Axin2 expression is assayed.
67 est polychaete that unambiguously belongs to crown annelids, providing a constraint on the tempo of a
69 direction of extension of the HERS from the crown, associated with a more extensive area of prolifer
70 hat a pair of functionally distinct chestnut-crowned babbler (Pomatostomus ruficeps) vocalizations ca
73 Our understanding of the earliest stages of crown bird evolution is hindered by an exceedingly spars
75 the same framework, juveniles and adults for crown birds and alligator (Alligator mississippiensis),
78 most ancient phylogenetic divergences among crown birds are known to have occurred in the Cretaceous
79 il represents one of the only well-supported crown birds from the Mesozoic era(12), and is the first
81 rs(4,5,9) that influenced the persistence of crown birds through the end-Cretaceous mass extinction.
83 raphical hypotheses of a Gondwanan origin of crown birds(3), and its relatively small size and possib
85 representatives of the deepest subclades of crown birds-Palaeognathae (ostriches and kin), Galloanse
88 red ring including both N and O atoms (i.e., crown, boat-chair, twist chair-chair, and boat-boat for
89 the posterior dentition and expression of a "crown buccal vertical groove complex", all of which are
102 ated by a 12-fold symmetric, 35-nm diameter "crown" complex that contains multifunctional viral RNA r
103 These and other results indicate that the crown contains 12 copies of protein A arranged basally t
105 the giant caimanine Purussaurus, a member of crown Crocodylia, and several other specimens from the N
107 l models taken before implant surgery, final crown delivery (4 months), and final follow-up (12 month
109 53 trees for which stem diameter, height and crown diameter have all been measured, including 2395 tr
112 of nanoswitch 1 and the anthracene-appended crown ether 2 is infallibly driven by chemical triggers
113 ation system, the concentrations of free aza-crown ether 7 and its complex with copper(I), that is, [
115 ng investigations reveal sodium cation-benzo-crown ether binding dramatically enhances the recognitio
119 /or the outer hydrogel layer to acidic pH or crown ether leads to the triggered separation of the bri
120 genic covalent units to an otherwise achiral crown ether macrocycle bearing a luminescent 2,2'-bipyre
121 tive carboxamide groups and an uncoordinated crown ether moiety in close proximity to a high-spin pse
122 oprotein-derived nanotracer with a perfluoro-crown ether payload ((19)F-HDL) to allow myeloid cell tr
123 d the mechanical dissociation of an ammonium/crown ether rotaxane using experimental (sonication) and
125 y functional theory indices characterize the crown ether solvated complex benzene-lithium Bz-Li-Cro a
127 atives, by using a mixture of sodium powder, crown ether, trimethylsilyl bromide and N(2) as the nitr
131 c investigations using an organic cation and crown-ether chelated alkali metal cations show that spec
132 of 1 by two electrons and in the presence of crown-ether forms the tetraanionic N(2) complex [K(2)][K
133 g a synergic combination of bulky diols with crown ethers able to accelerate this kind of reaction.
134 axane:axle selectivity, from primary amines, crown ethers and a range of C=O, C=S, S(=O)(2) and P=O e
139 es, the strategy enables 1:1 interactions of crown ethers with various functional groups to be charac
140 sly developed templated syntheses of dibenzo crown ethers, this protocol makes powerful cryptand host
141 niversary of Charles Pedersen's discovery of crown ethers, what is widely considered the birth of sup
143 Molecular clock analysis estimated that crown eudicots originated c. 146 Ma, considerably earlie
146 oPhenol ligand is a member of the chiral aza-crown family that spontaneously forms a bimetallic compl
147 Nearly all prefire biomass was combusted ("crown fire plus") in some reburns in which prefire trees
148 ularly in systems subject to stand-replacing crown fires, such as most Mediterranean-type ecosystems.
151 file of cabbage-stalk flour (CSF), pineapple-crown flour (PCF), and their essential oils were charact
152 ues calculated from cellulose delta(18) O vs crown fluxes were remarkably consistent; both varied sea
155 density, growth rate, crown illumination and crown form) and environmental conditions (soil fertility
164 ated gene transfer leads to the formation of crown galls or hairy roots, due to expression of transfe
169 d robust structure to the phylogeny of early crown group gnathostomes, reveal preconditions that sugg
170 Ma), and the initial diversification of the crown group occurred in the early to middle Eocene (44.5
174 y places the fossil taxon within the hagfish crown group, and resolved other putative fossil cyclosto
175 s of the ancestral 'L-shaped' humerus in the crown group, setting the stage for the diversification o
178 onsistently retrieve pre-Cretaceous ages for crown-group angiosperms have eroded confidence in the fo
181 Cambrian Explosion represents a radiation of crown-group bilaterians, it was simply one phase amongst
183 The clade diverged from other Brassicaceae crown-group clades during the Oligocene, followed by sub
184 of the eight homoeologous chromosomes in the crown-group genera, but not in the most ancestral Pseudo
185 iation and represents the oldest unequivocal crown-group mandibulate known from complete macrofossils
189 the primary endosymbiotic event, the ages of crown groups for photosynthetic eukaryotes, and the inde
190 ue to direct comparisons with members of the crown groups of extant phyla [4] and a lack of clarity r
192 ses we confirmed the predominance of a young'crown haplogroup' in Central European and North American
196 at breast height, wood density, growth rate, crown illumination and crown form) and environmental con
198 picture, H3O(+) resides in the center of the crown in the vibrational zero-point level, while the min
199 egions with higher cortical curvature (gyral crowns in face areas and sulcal fundi in place areas).
204 depth (PD), keratinized mucosa (KM), implant crown length (IC), distance from the implant shoulder ra
206 floor elevation, guided tissue regeneration, crown lengthening, implant placement, soft tissue graft,
208 lecular spheres from short helical stacks of crown-like dendrimers self-organize a Pm3 n cubic (Frank
213 i- (CD206(+) = M2) inflammatory macrophages, crown-like structures, and senescent cells, as well as a
214 ally indicated by the formation of so-called crown-like structures, as ATMs accumulate around dying a
217 erred from the phylogenetic relationships of crown Mammalia, which is primarily nocturnal, and crown
220 cent modeling to demonstrate that the golden-crowned manakin is genetically an admixture of these spe
222 We suggest that where possible, TLS and crown mapping should be used to provide complementary, i
223 mplants were mounted with different abutment/crown material (i.e., titanium abutments with a metal-ce
225 ckness (BBT), implant diameter, and abutment/crown material influence the accuracy of cone-beam compu
228 We continuously measured T(leaf) and whole-crown net CO(2) uptake for Eucalyptus parramattensis tre
230 wly and are more susceptible to outbreaks of crown-of-thorns starfish and coral disease-with a net ne
231 eaching and other disturbances (outbreaks of crown-of-thorns starfish and sedimentation), will constr
232 hite wines were screened for the presence of crown (oligomeric cyclic) procyanidins with 4, 5 or 6 (e
234 phisticated nest construction in anisodactyl crown passerines versus cavity-nesting in Eocene zygodac
236 d-associated tegument complexes (CATC): SCPs crown pentons/hexons and mediate tegument protein bindin
237 in which the motion of the H3O(+) ion in the crown pocket is strongly coupled with its OH stretches.
241 r shelf (PTS), is well-regarded as a derived crown primate trait, but its adaptive significance has b
242 of the earliest fossils likely to represent crown primates exhibit more strongly developed PTS cam m
245 d disproportional tooth size (decreased root/crown ratio), delayed tooth root development, widened PD
247 Mammalia, which is primarily nocturnal, and crown Reptilia, which is primarily diurnal, although mol
249 respiratory acclimation of foliar and whole-crown respiration rates; the trees adjusted to experimen
252 mediate systemic resistance against Fusarium crown rot and to simultaneously improve tomato plant gro
253 systemic resistance in tomato plants against crown rot caused by a soilborne pathogen, Fusarium oxysp
254 ) associated with resistance to Phytophthora crown rot in an F(2) population (n = 168) derived from a
256 in wheat confers resistance to both FHB and crown rot in diverse wheat backgrounds without yield pen
259 ld allow efficient breeding for Phytophthora crown rot resistance through marker-assisted selection (
260 nt of foliar blight, root rot, fruit rot and crown rot syndromes in squash (Cucurbita moschata), is a
261 ) associated with resistance to Phytophthora crown rot were detected on chromosome 4 (QtlPC-C04), 11
263 estational sac (GS), yolk sac (YS) diameter, crown-rump length (CRL), and embryonal heart rate (HR) d
264 y motions involving concerted motions of the crown scaffold and the H3O(+) ion are driven by a Franck
265 ) single unit porcelain-fused-to-metal (PFM) crowns (SCs) and 2) 3- to 4-unit PFM fixed dental prosth
270 )(2)UO(2)THF][K(18-crown-6)(THF)(2)](2)(3-ap crown) show that reduction events are ligand-based, with
271 The 3D imaging of mature field-grown root crowns showed that several genetic differences in seedli
272 shrew HBVs comprise separate species termed crowned shrew HBV (CSHBV) and musk shrew HBV (MSHBV), ea
274 rees (13.4 trees per hectare), with a median crown size of 12 m(2), along a rainfall gradient from 0
276 The electrical contact between the paper crown soaked in RTIL or DES and SPCE electrodes is assur
278 effect from HVC to RA in male Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelii).
279 ol nucleus, HVC of adult male Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelli) nearl
281 ogenetic signal among lineages, and that the crown squamate ancestor lacked follicular glands, which
282 e randomized to receive either a provisional crown (test) or standard healing abutment (control) afte
283 ri of stem tetrapods fall at the base of the crown tetrapod landscape, indicating that the capacity f
284 tion for such dryland adaptations across the crown tetrapod tree, in contrast with stem tetrapods and
285 recovered for aquatic fishes and terrestrial crown tetrapods, each of which is defined by a different
286 in the biomineralization of the thick enamel crowns that characterize the large molars in Gigantopith
287 ity red wines displayed a higher fraction of crown to non-cyclic procyanidins than the other wines.
288 surface area (RSA) and two-dimensional (2D) crown-to-root ratio (CRR) of extracted teeth to classify
289 n physical extension of the plant guides the crown toward the time-averaged position of the sun, to m
290 ved to have solved "The Puzzle of The King's Crown" using density.([1]) Today, measurements of densit
292 tently display a suite of traits (e.g., tall crown, well-developed P(3) and P(4) metaconid, strongly
296 rown-6)(THF)][((dipp) isq)2 Nd(Se5 )] (3-isq crown), which are characterized to contain a 6-membered
297 xin inhibition kinetics are explained by the crown, which constrains access but does not prevent bind
298 ppus gouldii varied with topography, and the crown widths of A. sphaerocephala were 100.6 cm x 87.2 c
299 maliaform with double molariform roots and a crown with two rows of cusps from the Late Triassic of G
300 the occlusal surface of monolithic zirconia crowns yielded reduced wear on both crown and antagonist