Results 1 to 10 of about 3,179,308 (368)

Robust continuous third-order finite time sliding mode controllers for exoskeleton robot [PDF]

open access: yesArchive of Mechanical Engineering, 2021
In this work, continuous third-order sliding mode controllers are presented to control a five degrees-of-freedom (5-DOF) exoskeleton robot. This latter is used in physiotherapy rehabilitation of upper extremities.
Ratiba Fellag   +3 more
doaj   +1 more source

Synthesis of novel phthalimido oxime pseudoesters and evaluation of their cytotoxicity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2020
A series of novel optically pure oxime pseudoesters derivatives were synthesized by the reaction of substitute keto oximes with various N-substituted α-amino acids chlorides in the presence of triethylamine and dichloromethane at 0°C, and their ...
Mehrez Asma   +4 more
doaj   +1 more source

Cu-Catalyzed Arylation of Bromo-Difluoro-Acetamides by Aryl Boronic Acids, Aryl Trialkoxysilanes and Dimethyl-Aryl-Sulfonium Salts: New Entries to Aromatic Amides

open access: yesMolecules, 2021
We describe a mechanism-guided discovery of a synthetic methodology that enables the preparation of aromatic amides from 2-bromo-2,2-difluoroacetamides utilizing a copper-catalyzed direct arylation.
Satenik Mkrtchyan   +4 more
doaj   +1 more source

Highly stable flexible pressure sensors with a quasi-homogeneous composition and interlinked interfaces

open access: yesNature Communications, 2022
Electronic skins (e-skins) are devices that can respond to mechanical stimuli and enable robots to perceive their surroundings. A great challenge for existing e-skins is that they may easily fail under extreme mechanical conditions due to their ...
Yuan Zhang   +15 more
semanticscholar   +1 more source

Development of heterogeneous catalyst from assorted periwinkle snail shells for sustainable biodiesel synthesis [PDF]

open access: yesE3S Web of Conferences, 2023
Owing to the environmental friendliness of biodiesel compared to fossil fuels, its application in internal combustion engines has gained wide recognition.
Ogunkunle Oyetola   +1 more
doaj   +1 more source

NH-HAZE: An Image Dehazing Benchmark with Non-Homogeneous Hazy and Haze-Free Images [PDF]

open access: yes2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2020
Image dehazing is an ill-posed problem that has been extensively studied in the recent years. The objective performance evaluation of the dehazing methods is one of the major obstacles due to the lacking of a reference dataset.
C. Ancuti, Cosmin Ancuti, R. Timofte
semanticscholar   +1 more source

Homogeneous Catalysis for Sustainable Energy: Hydrogen and Methanol Economies, Fuels from Biomass, and Related Topics

open access: yesChemical Reviews, 2021
As the world pledges to significantly cut carbon emissions, the demand for sustainable and clean energy has now become more important than ever. This includes both production and storage of energy carriers, a majority of which involve catalytic reactions.
Amit Kumar, P. Daw, D. Milstein
semanticscholar   +1 more source

Asymptotic Tail Probability of the Discounted Aggregate Claims under Homogeneous, Non-Homogeneous and Mixed Poisson Risk Model

open access: yesRisks, 2021
In this paper, we derive a closed-form expression of the tail probability of the aggregate discounted claims under homogeneous, non-homogeneous and mixed Poisson risk models with constant force of interest by using a general dependence structure between ...
Franck Adékambi, Kokou Essiomle
doaj   +1 more source

The Effect of Group type and Mediation type in Group Dynamic Assessment on the Improvement of Iranian Homogeneous and Heterogeneous EFL Learners' Listening Comprehension [PDF]

open access: yesJournal of Language Horizons, 2023
Based on Vygotsky's concept of Zone of Proximal Development, dynamic assessment (DA) has at its core the integration of assessment and instruction through mediation. DA is practiced either individually or collectively. In group-dynamic assessment (G-DA),
Nader Safaei Asl   +2 more
doaj   +1 more source

Liutex-Represented Vortex Spectrum in Turbulence

open access: yesEntropy, 2022
The Liutex vector is new quantity introduced to represent the rigid-body rotation part of fluid motion and thus to define and identify vortices in various flows. In this work, the intermittency and power-law similarity of the Liutex vector in homogeneous,
Bowen Yan, Yiqian Wang, Chaoqun Liu
doaj   +1 more source

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