Abstract Rockbursts are common geological disasters in underground engineering, and rockburst proneness evaluation is an important research subject. In this study, a multidimensional cloud model was used to evaluate the level, control variable method establish 15 (MC) models. The key factors affecting accuracy of numerical characteristics, weight, normalization methods. optimal characteristics ...

The triphenyl-methyl group in the title compound, C(28)H(23)IO(2)S, has the methine carbon slightly flattened out [ΣC(phen-yl)-C-C(phen-yl) = 332.8 (6) °]. The -C-O-C-C-S- chain connecting the triphenyl-methyl group and the aromatic ring adopts an extended zigzag conformation, these five atoms being approximately co-planar (r.m.s. deviation 0.260 Å).

Predictions of unknown heavy baryon masses based on an expansion in 1/mQ, 1/Nc and SU(3) breaking are updated to take into account a recent measurement of the Σc mass. Values are given for the two remaining unknown charm baryon masses Ξc and Ω ∗ c and the seven unknown bottom baryon masses Ξb, Σb, Ξ ′ b, Ωb, Σ ∗ b , Ξ ∗ b and Ω ∗ b . The spectrum of baryons containing a single charm or bottom q...

A recent general analysis of light-baryon isospin splittings is updated and extended to charmed baryons. The measured Σc and Ξc splittings stand out as being difficult to understand in terms of two-body forces alone. We also discuss heavy-light mesons; though the framework here is necessarily less general, we nevertheless obtain some predictions that are not strongly model-dependent. 13.40.Dk, ...

Predictions of unknown heavy baryon masses based on an expansion in 1/mQ, 1/Nc and SU(3) breaking are updated to take into account a recent measurement of the Σc mass. Values are given for the two remaining unknown charm baryon masses Ξc and Ω ∗ c and the seven unknown bottom baryon masses Ξb, Σb, Ξ ′ b, Ωb, Σ ∗ b , Ξ ∗ b and Ω ∗ b . The spectrum of baryons containing a single charm or bottom q...

What are the fundamental laws for the adsorption of charged polymers onto oppositely charged surfaces, for convex, planar, and concave geometries? This question is at the heart of surface coating applications, various complex formation phenomena, as well as in the context of cellular and viral biophysics. It has been a long-standing challenge in theoretical polymer physics; for realistic system...

The methine C atom of the triphenyl-methyl group in the title compound, C(28)H(23)IO(2)S, is slightly flattened out [ΣC(phen-yl)-C-C(phen-yl) = 335.6 (5)°]. The -C-O-C-C-S- chain connecting the triphenyl-methyl group and the aromatic ring adopts an extended zigzag conformation, these five atoms lying on an approximate plane (r.m.s. deviation = 0.120 Å).

Abstract To propose an effective and reasonable excavation plan for rock joints to control the overall stability of surrounding mass predict prevent engineering disasters, this study is aimed at predicting joint shear strength using combined algorithm by support vector regression (SVR) firefly (FA). The dataset collected was employed as output prediction, roughness coefficient (JRC), uniaxial c...