Science - USA (2022-02-11)

Biologically Inspired Engineering, National Institutes of Health National Center for Advancing Translational Sciences grant UH3T ...

figs. S6 and S7) ( 7 ). In contrast to atomic dia- mond crystals, the presence of these symmetry- forbidden reflections results ...

shown in Fig. 1D, the normal directions of the ossicles are primarily oriented along the [111] direction of the diamond microlat ...

Previous studies have demonstrated that in- dividual echinoderm ossicles largely diffract as single-crystal calcite ( 9 ) despit ...

the average length and thickness of the branches in non-[111] directions, respectively. It is conceiv- able that a largerhor a l ...

Because calcite is a brittle mineral, and biogenic calcite also fractures upon critical loading ( 31 ), we further investigated ...

PIEZOELECTRICS Induced giant piezoelectricity in centrosymmetric oxides D.-S. Park1,2, M. Hadad^2 , L. M. Riemer^1 , R. Ignatans ...

of oxygen with the ambient atmosphere in oxygen-nonstoichiometric fluorite structures (Y-doped ZrO 2 or Re+3-doped CeO 2 , where ...

wherexis the out-of-plane strain of the film, DLis the thickness change,Mis the corre- sponding electrostrictive coefficient, an ...

strain, reaching values of up to 2.15% (dind~ 13,700 pm/V) (Fig. 2D). The nonlinear depen- dence of the AC strain onEDC(Fig. 2D) ...

andCGOceramics,aswellasCGOfilmspre- pared by a different deposition technique (figs. S13 to S15). The obtained piezoelectric coe ...

ORGANIC CHEMISTRY Remote steric control for undirectedmeta-selective CÐH activation of arenes Boobalan Ramadoss†, Yushu Jin†, So ...

(fig. S2). Alkylarenes bearing a bulky substit- uent such astert-butyl (1a) or adamantyl (1b) reacted with highmetaselectivity ( ...

with a good yield but moderate selectivity (8.1:1). Phenylsilane (1q) reacted with high yield and highmetaselectivity (18:1). A ...

An important feature of our reaction is the versatility of the introduced boronic ester group, which can be readily functionaliz ...

meta-arylated phenols ( 9 and 10 ) (fig. S2). Synthesis ofmeta-substituted phenols is not trivial, and there are no efficient di ...

C. Kaes, A. Katz, M. W. Hosseini,Chem. Rev. 100 , 3553– 3590 (2000). I. A. I. Mkhalid, J. H. Barnard, T. B. Marder, J. M. Murph ...

is equivocal—despite decades of investigation, decisive evidence for a causal role of sexually antagonistic loci on recombinatio ...

mutations as a result of selective interference. Fitness declines faster for larger inversions because of stronger selective int ...

as it involves the rare stabilization of a handful of inversions and is highly variable (fig.S4).However,itworksfasterinlarger p ...