Results 21 to 30 of about 82,236 (297)

Honeycomb-like aluminum antennas for surface-enhanced infrared absorption sensing

open access: yesNanophotonics, 2023
Surface-enhanced infrared absorption (SEIRA) spectroscopy is a competent method to detect trace quantity of molecules and even protein conformational flexibility by enhancing their vibrational modes.
Najem Melissa   +5 more
doaj   +1 more source

A Joint Production and Maintenance Optimization of Closed-Loop Production System under Carbon Emission with a Switching Subcontractor Consideration

open access: yesApplied Sciences, 2019
This study outlines a new forecasting problem of closed-loop production system under environmental aspect by proposing a new solution based on subcontracting.
Zied Hajej   +2 more
doaj   +1 more source

Using WhatsApp for co-creation of learning resources: A case of a South African university

open access: yesThe Journal for Transdisciplinary Research in Southern Africa, 2020
Although culturally diverse students have potential to create enriched learning resources, it is difficult to harness students’ agency and to aggregate individual contributions into a meaningful learning resource.
Patient Rambe   +2 more
doaj   +1 more source

Model of AlGaN/GaN based on High Electron Mobility Transistors using SILVACO ATLAS™ [PDF]

open access: yesE3S Web of Conferences
Since the introduction of semiconductors, the world has undergone numerous profound transformations during the past few decades. With advancements in technology, semiconductor products' performance requirements keep rising.
El-Yazami Chaimae   +2 more
doaj   +1 more source

Higher performance enhancement of direct torque control by using Space Vector Modulation for doubly fed induction machine [PDF]

open access: yesE3S Web of Conferences
This research work aims at current literature review and extensive performance improvement in Direct Torque Control using Space Vector Modulation (DTC-SVM) by considering Doubly Fed Induction Machines.
Gouaamar Radouan   +3 more
doaj   +1 more source

Multiscale Innovative Materials and Structures (MIMS) [PDF]

open access: yesNanomaterials, 2021
Increasing attention is growing towards advanced multiscale metamaterials and nanostructures, due to recent developments in nanoscience and nanotechnology [...]
Raffaele Barretta   +2 more
openaire   +4 more sources

MAX-DOAS measurements of tropospheric NO2 and HCHO in Munich and the comparison to OMI and TROPOMI satellite observations [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
We present two-dimensional scanning Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations of nitrogen dioxide (NO2) and formaldehyde (HCHO) in Munich.
K. L. Chan   +8 more
doaj   +1 more source

Compute Optimization of Petri Net Controllers Using the Algebraic Method

open access: yesApplied Sciences, 2019
This study attempted to calculate an optimal Petri net supervisor able to respect the control specifications imposed for a flexible manufacturing system. There are several theories around the control synthesis of discrete event systems.
Sadok Rezig, Sadok Turki, Nidhal Rezg
doaj   +1 more source

Mathematical Model for Production Plan Optimization—A Case Study of Discrete Event Systems

open access: yesMathematics, 2020
This paper proposes an optimal scheduling model under production and maintenance constraints for a real case of a discrete event system. The intent was to use the rich mathematical theory and algorithms of optimization in the study of this important ...
Sadok Rezig   +3 more
doaj   +1 more source

Software compatibility analysis for quantitative measures of [18F]flutemetamol amyloid PET burden in mild cognitive impairment

open access: yesEJNMMI Research, 2023
Rationale Amyloid-β (Aβ) pathology is one of the earliest detectable brain changes in Alzheimer’s disease pathogenesis. In clinical practice, trained readers will visually categorise positron emission tomography (PET) scans as either Aβ positive or ...
Hugh G. Pemberton   +11 more
doaj   +1 more source

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