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During tunnel construction using the drilling and blasting method, layered jointed rock masses often pose engineering challenges such as over- and under-excavation of the crown and working face. The authors addressed the...

In underground mining and tunneling projects, directional fracture-controlled blasting is critical for precise tunnel formation and reducing over- and under-excavation. However, the presence of well-developed joints in r...

Abstract This study presents a numerical framework for analyzing dispersion and wave propagation in spatiotemporally modulated metamaterials. A one-dimensional periodic spring–mass system with space- and time-dependent...

Motivated by improving predictions of arrival times at Earth of shocks driven by coronal mass ejections (CMEs), we have analyzed 71 Earth-directed events in different stages of their propagation. The study is primarily b...

Coronal mass ejections (CMEs) are eruptions originating from the solar corona, usually carrying a large amount of fast-flowing plasma into interplanetary space, accompanied by an enhanced magnetic field. CMEs can form sh...

Materias / palabras clave: Language and Literature: Philology. Linguistics: Communication. Mass media

In this paper, the mechanisms of mass transfer to In/CdTe systems under nanosecond pulsed laser irradiation, which are due to nonstationarity, nonequilibrium, physical and geometric nonlinearity, high speed and simultane...

Abstract The acoustic propagation characteristics of axisymmetric waves have been widely used in leak detection of fluid-filled pipes. The related acoustic methods and equipment are gradually coming to the market, but th...

Placing a material inside an optical cavity can enhance transport of excitation energy by hybridizing excitons with confined light modes into polaritons, which have a dispersion that provides these light–matter quasi-p...

Yacon (Smallanthus sonchifolius) is a plant of Andean origin currently cultivated and consumed in several parts of the world for having numerous nutraceutical properties. An increasing interest in its cultivation demands...

Neltuma spp. (previously known as Prosopis spp.) are vital for ecological restoration and sustainable forestry in arid and semiarid environments. Although extensively studied, nursery techniques are still inconsistently ...

A highly efficient protocol for the regeneration of plantlets of lisianthus (cut flowers plant) was established via direct and indirect organogenesis induced from leaves explants. In direct pathway, a reliable strategy f...

Abstract The stability of surrounding rock is a critical challenge in underground engineering. Accurate prediction of Excavation Damaged Zone Thickness (EDZT) in surrounding rock is vital for designing safe underground s...

BackgroundIn practical engineering, the waterproof coal pillar usually suffers from different degrees of dynamic load from the overlying strata, and its internal water distribution is non-uniform. Although the traditiona...

This study investigates the effect of discharge voltage on fracture distribution and fragmentation extent in multi-hole pulsed discharge rock fragmentation. Comparative experiments were conducted on red sandstone specime...

The plasmasphere contains rich small-scale structure that plays a key role in regulating wave propagation and mass transport in the inner magnetosphere, yet the evolution of plasmaspheric density ducts remains poorly und...

The article focuses on the impact of loads from railway rolling stock on the condition of the ballast prism, the propagation of vibrations in the foundation, and their effect on the dynamic behavior of a high-rise reinfo...

Smilax glabra, a perennial vine with high pharmaceutical value, exhibits seed dormancy under natural conditions that severely restricts artificial propagation and industrial-scale cultivation. This study aims to systemat...

Research on time crystals concerns the spontaneous breaking of translational symmetry in time, as well as the realization of phenomena and phases known from solid-state physics in the time domain. Periodically driven sys...

Materias / palabras clave: antenna and propagation technology, computer communications networks, communications technologies, data communications, non-contact systems, wireless communication; Language and Literature: Philology. Linguistics: Commun...

Materias / palabras clave: embryogenesis, organogenesis, plant breeding, mass propagation, plant biotechnology, plant in vitro culture; Agriculture: Plant culture