Design of a Pendulum Prototype for Dynamic Testing of Material Removal Using Picks
Energies, 2021 The need for large and fast excavations, together with noise and vibration limitations, means that mechanical removal is increasingly used rather than blasting.
María-Belén Prendes-Gero +3 more
doaj +1 more source
Investigation of selected independent variables on extrusion of rice semolina with and without propeller [PDF]
BIO Web of Conferences, 2023 The influence of screws with and without propeller, as well as the independent variables of material moisture content, working screw speed, feeding screw speed and die temperature on the changes of some physical and mechanical properties during singles ...
Chalamov Yanush +3 more
doaj +1 more source
Accurate Calculation Method for Mechanical Specific Energy of Horizontal Well
IOP Conference Series: Materials Science and Engineering, 2020 Abstract The existing drilling efficiency-monitoring model based on the theory of mechanical specific energy is only applicable to vertical wells. When it is used to monitor the drilling efficiency of horizontal wells, the impact of high friction in horizontal wells is not considered, so the monitored specific energy of the machine is ...
Shuangshuang Wang, Qian Li
openaire +1 more source
A Growth Model for Multicellular Tumor Spheroids [PDF]
, 2003 Most organisms grow according to simple laws, which in principle can be derived from energy conservation and scaling arguments, critically dependent on the relation between the metabolic rate B of energy flow and the organism mass m.
Condat, Carlos A. +5 more
core +2 more sources
Research on Interdependence between Specific Rock Cutting Energy and Specific Drilling Energy
Applied Sciences, 2023 A method based on extensive laboratory and field measurements was developed to determine the dependence of specific rock cutting energy (SEc) on specific drilling energy (SEd) for machines with different operating and design characteristics and similar ...
Davor Antoljak +3 more
doaj +1 more source
Irregular Oscillatory-Patterns in the Early-Time Region of Coherent Phonon Generation in Silicon [PDF]
, 2017 Coherent phonon (CP) generation in an undoped Si crystal is theoretically investigated to shed light on unexplored quantum-mechanical effects in the early-time region immediately after the irradiation of ultrashort laser pulse.
Hase Muneaki +6 more
core +2 more sources
Doppler cooling of a Coulomb crystal [PDF]
, 2001 We study theoretically Doppler laser-cooling of a cluster of 2-level atoms confined in a linear ion trap. Using several consecutive steps of averaging we derive, from the full quantum mechanical master equation, an equation for the total mechanical ...
A. W. Vogt +33 more
core +3 more sources
Method of specific energy for determination mechanical characteristics of structural steel
Magazine of civil engineering, 2011 The studies performed in present article are directed on improvement the practical methods of the existing steel structures examination. In particular, the new method for the determination of the mechanical properties of steel structure elements of the existing buildings and structures is offered.
Levanov A.V. +2 more
openaire +2 more sources
Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions [PDF]
, 2017 Piezoelectric materials are widely used as smart structures in cubic reconnaissance satellites because of their sensing, actuating, and energy-harvesting abilities.
Butt, Zubair +4 more
core +1 more source
Applied Sciences, 2022 Owing to several advantages, mechanical pre-cutting techniques were first introduced in the United States and subsequently used in Europe for tunneling.
Han-eol Kim +4 more
doaj +1 more source