Results 121 to 130 of about 1,689,718 (367)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Penapisan Derau Gaussian, Speckle dan Salt&Pepper Pada Citra Warna

IJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2011
Quality of digital image can decrease becouse some noises. Noise can come from lower quality of image recorder, disturb when transmission data process and weather. Noise filtering can make image better becouse will filtering that noise from the image and
Ika Purwanti Ningrum, Agfianto Eko Putra, Dian Nursantika   +2 more
doaj   +1 more source

Design and Implementation of Speckle Noise Reduction Algorithm Using 2D Ultrasound Image [PDF]

, 2023
Md. Habibur Rahman, Md. Selim Hossain, Farhana Islam   +2 more
openalex   +1 more source

Radiation Effects in Electret Organic Thin‐Film Transistors Due to High Flux and High Dose X‐Ray Irradiation

Advanced Materials, EarlyView.
Electret‐style organic thin‐film transistors are evaluated for synchrotron X‐ray dosimetry at ultra‐high dose rates, showing promising performance and agreement with standard detectors. XPS and NEXAFS reveal radiation‐induced oxidation and Fermi level shifts in pentacene and polystyrene, correlating with reduced charge carrier mobility and providing ...
Alexandria Mitchell, Jessie A. Posar, James Cayley, Georgia York, Michael Lerch, Attila J. Mozer, Igor Píš, Elena Magnano, Luca Tosti, Maddalena Pedio, Alasdair Syme, Ian G. Hill, Marco Petasecca   +12 more
wiley   +1 more source

Reduction of speckle noise in laser energy distribution on the target by means of modified Fourier hologram and incoherent averaging technique

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2018
Presented in this paper is the technique of formation of required laser intensity distribution on the target with a reduced speckle noise. The method is based on the use of modified Fourier hologram adapted to controlled phase modulators.
A.G. Derzhypolskyi, O.V. Gnatovskyi, L.A. Derzhypolska   +2 more
doaj   +1 more source

Make It Less Complex: Autoencoder for Speckle Noise Removal-Application to Breast and Lung Ultrasound. [PDF]

J Imaging, 2023
Oliveira-Saraiva D, Mendes J, Leote J, Gonzalez FA, Garcia N, Ferreira HA, Matela N.   +6 more
europepmc   +1 more source

Speckle noise reduction of multi-frame optical coherence tomography data using multi-linear principal component analysis.

Optics Express, 2018
Optical coherence tomography (OCT) is an important interferometric diagnostic technique extensively applied in medical sciences. However, OCT images inevitably suffer from speckle noise, which reduces the accuracy of the diagnosis of ocular diseases.
Hongli Lv, S. Fu, Caiming Zhang, Lin Zhai   +3 more
semanticscholar   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

Robust SAR Image Despeckling by Deep Learning From Near-Real Datasets

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The inherent speckle in synthetic aperture radar (SAR) images significantly affects their potential usefulness, and its effective suppression is a challenging and nontrivial task.
Jianjun Guan, Rui Liu, Xin Tian, Xinming Tang, Song Li   +4 more
doaj   +1 more source

FETAL ULTRASOUND IMAGE DENOISING USING CURVELET TRANSFORM [PDF]

ICTACT Journal on Image and Video Processing, 2015
The random speckle noise in the acquired fetal ultrasound images is caused by the interference of reflected ultrasound wave fronts. The presence of speckle noise will degrade the quality of the image and even hide image details, which in turn affect the ...
J. Nithya, M. Madheswaran
doaj