Results 21 to 30 of about 743,734 (173)

Analysis of the efficiency of the grinding process in closed circuit ball mills

open access: yesMATEC Web of Conferences, 2016
Ball mills for fine grinding cement clinker and additives are widely used around the world. To improve the efficiency of a ball grinding the ball mills are transferred in closed circuit with air-separators of various designs.
Telichenko Valery I.   +3 more
doaj   +1 more source

Multipliers of embedded discs [PDF]

open access: yes, 2014
We consider a number of examples of multiplier algebras on Hilbert spaces associated to discs embedded into a complex ball in order to examine the isomorphism problem for multiplier algebras on complete Nevanlinna-Pick reproducing kernel Hilbert spaces ...
Kenneth R. Davidson   +3 more
core   +1 more source

Fuzzy Metric Spaces Of The Two-Fold Fuzzy Algebra [PDF]

open access: yesNeutrosophic Sets and Systems
This paper is dedicated to defining and studying for the first time the concept of fuzzy metric spaces based on two-fold fuzzy algebras, where the elementary properties of this new concept will be studied and presented by many theorems and related ...
Hazim M. Wali Al-Tameemi
doaj   +1 more source

Vibration Suppression and Over-Quadrant Error Mitigation Methods for a Ball-Screw Driven Servo System With Dual-Position Feedback

open access: yesIEEE Access, 2020
For high-precision control in a ball-screw driven servo system, the full-closed loop position control structure with position measurements from both the drive side and the load side are usually required.
Ming Yang   +3 more
doaj   +1 more source

Reamer Breakage during Intramedullary Nailing in Tibial Shaft Fractures: A Case Report and Review of Literature

open access: yesJournal of Orthopedic and Spine Trauma, 2021
Background: Interlocked intramedullary nailing is the most common treatment for closed tibial fractures. Reaming is a fundamental step in this surgical technique, and reamer breakage is a rare yet challenging complication during this operation.
Mahlisha Kazemi   +2 more
doaj   +1 more source

Fixed Point Results for α*-ψ-Dominated Multivalued Contractive Mappings Endowed with Graphic Structure

open access: yesMathematics, 2019
The purpose of this paper is to establish fixed point results for a pair α ∗ -dominated multivalued mappings fulfilling generalized locally new α ∗ - ψ -Ćirić type rational contractive conditions on a closed ...
Tahair Rasham   +4 more
doaj   +1 more source

Some Fixed Point Results in Function Weighted Metric Spaces

open access: yesJournal of Mathematics, 2021
After the establishment of the Banach contraction principle, the notion of metric space has been expanded to more concise and applicable versions. One of them is the conception of ℱ-metric, presented by Jleli and Samet.
Awais Asif   +3 more
doaj   +1 more source

A note on Riemann integrability

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1978
In this note we define Riemann integrabillty for real valued functions defined on a compact metric space accompanied by a finite Borel measure. If the measure of each open ball equals the measure of its corresponding closed ball, then a bounded function ...
G. A. Beer
doaj   +1 more source

On the global uniform stability analysis of non-autonomous dynamical systems: A survey [PDF]

open access: yesMathematica Moravica, 2022
In this survey, we introduce the notion of stability of time varying nonlinear systems. In particular we investigate the notion of global practical exponential stability for non-autonomous systems. The proposed approach for stability analysis is based on
Hadj Taieb N., Hammami M.A., Hammi M.
doaj   +1 more source

Estimating Residence Time Distributions in Industrial Closed-Circuit Ball Mills

open access: yesMinerals, 2022
This paper compares two deconvolution methodologies used to estimate residence time distributions (RTD) in industrial closed-circuit ball mills. Parametric and non-parametric deconvolution techniques were evaluated. Both techniques allowed for direct RTD estimates from inlet and outlet tracer measurements in the mills, with no need for mass balances ...
Luis Vinnett   +4 more
openaire   +3 more sources

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