Results 51 to 60 of about 17,154 (305)

Influence of underground radio wave on human body in coal mine

open access: yesGong-kuang zidonghua, 2022
The large-power radio waves emitted by 5G, WiFi6, UWB, ZigBee and other mine mobile communication systems and personnel and vehicle positioning systems will affect the health of underground personnel.
DING Xuhai   +3 more
doaj   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal   +4 more
wiley   +1 more source

The Number of Human Population, a Statistical and Economical Synthesis of Alternative Evolution towards Demographical Explosion or Implosion [PDF]

open access: yesTheoretical and Applied Economics, 2006
The number of the human population had reunited both in its quantitative side, and, especially, in the qualitative one, the most significant aspects of the various and detailed human evolution and dynamic. This demographic and synthetic indicator allowed
Gheorghe Savoiu
doaj   +1 more source

Modelling Approach to the Evaluation of Explosion Limits of Ethylene-Air Mixtures at Flowing Conditions for Industrial Process Optimisation

open access: yesChemical Engineering Transactions, 2014
Hydrocarbon partial oxidation is still one of the most hazardous processes in the chemical industry, requiring the correct knowledge of the explosive limits under flowing industrial conditions.
E. Palazzi   +3 more
doaj   +1 more source

Limit theory and bootstrap for explosive and partially explosive autoregression

open access: yesStochastic Processes and their Applications, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Toward Knowledge‐Based Workflows: A Semantic Approach to Atomistic Simulations for Mechanical and Thermodynamic Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Knowledge‐based atomistic workflows are presented for mechanical and thermodynamic properties. By coupling modular simulations with ontology‐aligned metadata and provenance, Fe case studies on elastic behavior, defects, thermal properties, and Hall–Petch strengthening reveal how FAIR, queryable, and reusable simulation data can be generated. Mechanical
Abril Azócar Guzmán   +5 more
wiley   +1 more source

The Study on the Shock Wave Propagation Rule of a Gas Explosion in a Gas Compartment

open access: yesShock and Vibration, 2022
Combined with the k-ε turbulence model of general application, a refined finite element model of a utility tunnel’s gas compartment filled with the methane/air mixture is developed.
Shu-Chao Lin   +5 more
doaj   +1 more source

Simple and safe method for determining explosion limits at elevated pressures

open access: yes, 2014
[[abstract]]A simple and safe method for determining the explosion limits at elevated pressures and temperatures is developed by using a small explosion test cell with a pressure balancing and containment design.
Chen, Jenq-Renn;Liu, Kensin
core   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Prediction of structural deformations in a research stand for the study of hydrogen explosions [PDF]

open access: yesMATEC Web of Conferences
Along with the development of facilities that employ hydrogen in many aspects such as hydrogen production, storage systems, fueling stations, and so on, it is critical to understand the features of this gas, particularly those affecting the explosive ...
Tuhut Ligia Ioana   +2 more
doaj   +1 more source

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