submitted by obrawn 1 hour ago
Recycling systems are becoming more complex as increasing material recovery is required from products with complicated material mixtures, including key-metals and rare earths, such as electronic and automotive waste. However, the design of multi-stage mechanical recycling systems has never been t...
submitted by PhilOma 1 hour ago
The bandwidth of the ball-screw drive is limited by the first natural frequency of the mechanical structure. As opposed to conventional drives where the axial bearing stiffness is kept high to obtain higher natural frequencies, this paper proposes to use lower axial bearing stiffness accompanied ...
submitted by Leta 1 hour ago
Achieving sustainability in manufacturing requires that the energy consumption of manufacturing machines be reduced without unduly sacrificing their speed and accuracy. This paper presents the design and control of a novel feed drive whose actuation method and drive configuration change depending...
submitted by mizshf 3 hours ago
Today most technical parts and components are made of monolithic materials. Nevertheless, the previously used monolithic materials reach their technological and constructive limits, so that an improvement of the component properties can be realized by hybrid parts. Forging of previously joined se...
submitted by AdoBrendon 5 hours ago
Polyethylene degradation over alumina and tungstophosphoric acid (TPA) containing ordered mesoporous catalysts was studied in a semibatch reactor. In the noncatalytic degradation reaction, selectivity of C3 and C4 hydrocarbons was quite high. However, significant ethylene and C4 hydrocarbon selec...
submitted by prenciss 5 hours ago
This work investigates the acidification of a natural limestone source using citric acid in order to produce porous calcium oxide (CaO) CO2 sorbent, with good stability in high-temperature operation. The CO2 sorption behavior of the proposed material was studied in several adsorption–regenerati...
submitted by BlaRoss 8 hours ago
In this contribution a novel approach to Electrochemical Micro Machining (EMM), utilizing a structured counter-electrode with an integrated microfluidic channel is presented. The process is capable of transferring numerous structures in parallel. The structure was defined by SU-8 photoresist. A ...
submitted by bettsnirvana 1 day ago
The function of sport shoes is to improve sport performance and reduce sports-related injuries. They are commercial products developed by combining sports technology and marketing activities. Numerous studies on research and development, material application, production process improvements, and ...
submitted by stote 1 day ago
Which vary as a convex function of the amounts of a continuously divisible common resource allocated to individual jobs. Finished jobs are delivered in batches and there is no capacity limit on each delivery batch. We first provide an O(n 5) dynamic programming algorithm to find the optimal job s...
submitted by CristofTre 1 day ago
This paper presents the design of a XY-table for desktop machine tools that makes use of a novel fluid dynamic drive principle combined with an active aerostatic planar guide for contactless motion in two directions. The presented approach reduces the installation space and the number of required...
submitted by bappir234 1 day ago
In this study, the performance of a packed-bed reactive distillation (RD) column for the production of methyl acetate (MeOAc) using an ion-exchange catalyst and simulation of the same using CHEMCAD were analyzed. An ion-exchange catalyst, Indion 190, was used in this study. The performance of the...
submitted by MasoBru 1 day ago
Aminosilane grafted and diamine modified reactive montmorillonite was exploited to generate aromatic polyamide based nanocomposites. For better compatibility, the hydrophilic nature of montmorillonite was changed into organophilic using 1,4-phenylenediamine, and the hydroxyl groups present on the...
submitted by AlvinRaymo 1 day ago
We have previously demonstrated how combination of Discontinuous Molecular Dynamics (DMD) and Thermodynamic Perturbation Theory (TPT) can be employed to characterize the entire phase diagram from molecular simulations. Nevertheless, the precision of that characterization in the (nonanalytic) crit...
submitted by savarobor 1 day ago
A practical procedure for extracting cellulose whiskers (CWs) from ordinary filter paper by acid hydrolysis has been developed. The extracted CWs alone and in combination with nanoclay were used as reinforcing agents for the preparation of green nanocomposites based on jute fabric and glutaraldeh...
submitted by kojikovac 1 day ago
This contribution undertakes the evaluation of one-dimensional (1D) models to approximate the behavior of actual three-dimensional (3D) catalyst pellets, in the case of abnormal kinetics and close to the limit of steady state multiplicity. Two 1D models are tested: a one parameter model, called g...