We present the first unquenched latticeQCD calculation of the form factors for the decay
This paper examined the effect of Si addition on the cracking resistance of Inconel 939 alloy after laser additive manufacturing (AM) process. With the help of CALculation of PHAse Diagrams (CALPHAD) software ThermoCalc, the amounts of specific elements (C, B, and Zr) in liquid phase during solidification, cracking susceptibility coefficients (CSC) and cracking criterion based on
 Award ID(s):
 1946231
 Publication Date:
 NSFPAR ID:
 10389610
 Journal Name:
 MRS Communications
 Volume:
 12
 Issue:
 5
 Page Range or eLocationID:
 p. 844849
 ISSN:
 21596867
 Publisher:
 Cambridge University Press (CUP)
 Sponsoring Org:
 National Science Foundation
More Like this

Abstract at nonzero recoil. Our analysis includes 15 MILC ensembles with$$B\rightarrow D^*\ell \nu $$ $B\to {D}^{\ast}\ell \nu $ flavors of asqtad sea quarks, with a strange quark mass close to its physical mass. The lattice spacings range from$$N_f=2+1$$ ${N}_{f}=2+1$ fm down to 0.045 fm, while the ratio between the light and the strangequark masses ranges from 0.05 to 0.4. The valence$$a\approx 0.15$$ $a\approx 0.15$b andc quarks are treated using the Wilsonclover action with the Fermilab interpretation, whereas the light sector employs asqtad staggered fermions. We extrapolate our results to the physical point in the continuum limit using rooted staggered heavylight meson chiral perturbation theory. Then we apply a modelindependent parametrization to extend the form factors to the full kinematic range. With this parametrization we perform a joint latticeQCD/experiment fit using several experimental datasets to determine the CKM matrix element . We obtain$$V_{cb}$$ ${V}_{\mathrm{cb}}$ . The first error is theoretical, the second comes from experiment and the last one includes electromagnetic and electroweak uncertainties, with an overall$$\left V_{cb}\right = (38.40 \pm 0.68_{\text {th}} \pm 0.34_{\text {exp}} \pm 0.18_{\text {EM}})\times 10^{3}$$ $\left({V}_{\mathrm{cb}}\right)=(38.40\pm 0.{68}_{\text{th}}\pm 0.{34}_{\text{exp}}\pm 0.{18}_{\text{EM}})\times {10}^{3}$ , which illustrates the tensions between the experimental data sets, and between theory and experiment. This result is inmore »$$\chi ^2\text {/dof} = 126/84$$ ${\chi}^{2}\text{/dof}=126/84$ 
Abstract Recent spectacular advances by AI programs in 3D structure predictions from protein sequences have revolutionized the field in terms of accuracy and speed. The resulting “folding frenzy” has already produced predicted protein structure databases for the entire human and other organisms’ proteomes. However, rapidly ascertaining a predicted structure’s reliability based on measured properties in solution should be considered. Shapesensitive hydrodynamic parameters such as the diffusion and sedimentation coefficients (
,$${D_{t(20,w)}^{0}}$$ ${D}_{t(20,w)}^{0}$ ) and the intrinsic viscosity ([$${s_{{\left( {{20},w} \right)}}^{{0}} }$$ ${s}_{\left(20,w\right)}^{0}$η ]) can provide a rapid assessment of the overall structure likeliness, and SAXS would yield the structurerelated pairwise distance distribution functionp (r ) vs.r . Using the extensively validated UltraScan SOlution MOdeler (USSOMO) suite, a database was implemented calculating from AlphaFold structures the corresponding ,$${D_{t(20,w)}^{0}}$$ ${D}_{t(20,w)}^{0}$ , [$${s_{{\left( {{20},w} \right)}}^{{0}} }$$ ${s}_{\left(20,w\right)}^{0}$η ],p (r ) vs.r , and other parameters. Circular dichroism spectra were computed using the SESCA program. Some of AlphaFold’s drawbacks were mitigated, such as generating whenever possible a protein’s mature form. Others, like the AlphaFold direct applicability to singlechain structures only, the absence of prosthetic groups, or flexibility issues, are discussed. Overall, this implementation of the USSOMOAF database should already aid in rapidly evaluating the consistency in solution of a relevant portion of AlphaFold predicted protein structures. 
Abstract Fix a positive integer
n and a finite field . We study the joint distribution of the rank$${\mathbb {F}}_q$$ ${F}_{q}$ , the$${{\,\mathrm{rk}\,}}(E)$$ $\phantom{\rule{0ex}{0ex}}\mathrm{rk}\phantom{\rule{0ex}{0ex}}\left(E\right)$n Selmer group , and the$$\text {Sel}_n(E)$$ ${\text{Sel}}_{n}\left(E\right)$n torsion in the Tate–Shafarevich group Equation missing<#comment/>asE varies over elliptic curves of fixed height over$$d \ge 2$$ $d\ge 2$ . We compute this joint distribution in the large$${\mathbb {F}}_q(t)$$ ${F}_{q}\left(t\right)$q limit. We also show that the “largeq , then large height” limit of this distribution agrees with the one predicted by Bhargava–Kane–Lenstra–Poonen–Rains. 
Abstract We present a proof of concept for a spectrally selective thermal midIR source based on nanopatterned graphene (NPG) with a typical mobility of CVDgrown graphene (up to 3000
), ensuring scalability to large areas. For that, we solve the electrostatic problem of a conducting hyperboloid with an elliptical wormhole in the presence of an$$\hbox {cm}^2\,\hbox {V}^{1}\,\hbox {s}^{1}$$ ${\text{cm}}^{2}\phantom{\rule{0ex}{0ex}}{\text{V}}^{1}\phantom{\rule{0ex}{0ex}}{\text{s}}^{1}$inplane electric field. The localized surface plasmons (LSPs) on the NPG sheet, partially hybridized with graphene phonons and surface phonons of the neighboring materials, allow for the control and tuning of the thermal emission spectrum in the wavelength regime from to 12$$\lambda =3$$ $\lambda =3$ m by adjusting the size of and distance between the circular holes in a hexagonal or square lattice structure. Most importantly, the LSPs along with an optical cavity increase the emittance of graphene from about 2.3% for pristine graphene to 80% for NPG, thereby outperforming stateoftheart pristine graphene light sources operating in the nearinfrared by at least a factor of 100. According to our COMSOL calculations, a maximum emission power per area of$$\upmu$$ $\mu $ W/$$11\times 10^3$$ $11\times {10}^{3}$ at$$\hbox {m}^2$$ ${\text{m}}^{2}$ K for a bias voltage of$$T=2000$$ $T=2000$ V is achieved by controlling the temperature of the hot electrons through the Joule heating. By generalizing Planck’s theory to any grey body and derivingmore »$$V=23$$ $V=23$ 
Abstract The genericity of Arnold diffusion in the analytic category is an open problem. In this paper, we study this problem in the following
a priori unstable Hamiltonian system with a timeperiodic perturbation where ${\mathcal{H}}_{\epsilon}(p,q,I,\phi ,t)=h(I)+\sum _{i=1}^{n}\pm \left(\frac{1}{2}{p}_{i}^{2}+{V}_{i}({q}_{i})\right)+\epsilon {H}_{1}(p,q,I,\phi ,t),$ , $(p,q)\in {\mathbb{R}}^{n}\times {\mathbb{T}}^{n}$ with $(I,\phi )\in {\mathbb{R}}^{d}\times {\mathbb{T}}^{d}$n ,d ⩾ 1,V _{i}are Morse potentials, andɛ is a small nonzero parameter. The unperturbed Hamiltonian is not necessarily convex, and the induced inner dynamics does not need to satisfy a twist condition. Using geometric methods we prove that Arnold diffusion occurs for generic analytic perturbationsH _{1}. Indeed, the set of admissibleH _{1}isC ^{ω}dense andC ^{3}open (a fortiori ,C ^{ω}open). Our perturbative technique for the genericity is valid in theC ^{k}topology for allk ∈ [3, ∞) ∪ {∞,ω }.