Results 51 to 60 of about 303,819 (286)

RF system calibration for global Q matrix determination

open access: yes, 2015
The use of multiple transmission channels (known as Parallel Transmission, or PTx) provides increased control of the MRI signal formation process.
Beqiri, A   +3 more
core   +1 more source

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi   +5 more
wiley   +1 more source

Lossy compression of multilook SAR images in the optimal operation point neighborhood by BPG-coder

open access: yesАвіаційно-космічна техніка та технологія
The subject matter of the article is the process of lossy compression of multilook Synthetic Aperture Radar (SAR) images corrupted by multiplicative, spatially correlated speckle noise, with a focus on operation in the neighborhood of the potential ...
Vladimir Lukin   +2 more
doaj   +1 more source

Image fusion techniqes for remote sensing applications [PDF]

open access: yes, 2002
Image fusion refers to the acquisition, processing and synergistic combination of information provided by various sensors or by the same sensor in many measuring contexts.
Bruzzone, Lorenzo   +4 more
core   +1 more source

Matrix Metalloproteinase Inhibitors: A Review on Pharmacophore Mapping and (Q)SARs Results [PDF]

open access: yesCurrent Medicinal Chemistry, 2005
The matrix metalloproteinases (MMPs) are a family of more than 20 enzymes that are intimately involved in tissue remodelling. These zinc-containing endopeptidases consist of several subsets of enzymes, including collagenase, stromelysins and gelatinases and are involved in the degradation of the extracellullar matrix (ECM) that forms the connective ...
C A, Kontogiorgis   +2 more
openaire   +2 more sources

Engineering Strategies for Stable and Long‐Life Alkaline Zinc‐Based Flow Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Alkaline zinc‐based flow batteries face persistent challenges from unstable zinc deposition, including dendrite growth, passivation, corrosion, and hydrogen evolution, which severely limit cycling stability. Current research addresses these issues through coordinated electrode structuring, electrolyte regulation, and membrane design to control zinc ...
Yuran Bai   +6 more
wiley   +1 more source

ARCHAEOLOGICAL SURVEYS ON THE GERMAN NORTH SEA COAST USING HIGH-RESOLUTION SYNTHETIC APERTURE RADAR DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
We show that high-resolution space-borne Synthetic Aperture Radar (SAR) imagery with pixel sizes well below 1 m2 can be used to complement archaeological surveys in areas that are difficult to access.
M. Gade, J. Kohlus, C. Kost
doaj   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

open access: yesAdvanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu   +10 more
wiley   +1 more source

Mobile phones: a trade-off between speech intelligibility and exposure to noise levels and to radio-frequency electromagnetic fields [PDF]

open access: yes, 2019
When making phone calls, cellphone and smartphone users are exposed to radio-frequency (RF) electromagnetic fields (EMFs) and sound pressure simultaneously. Speech intelligibility during mobile phone calls is related to the sound pressure level of speech
Aerts, Sam   +7 more
core   +2 more sources

Giant Intrinsic Chirality Amplification of Aqueous Lead Halide Perovskite Nanocrystals via H‐Bond Driven Self‐Assembly Superstructures

open access: yesAdvanced Functional Materials, EarlyView.
Water‐assisted monoclinic CsPbBr3 transformation strategy is applied for synthesizing aqueous CsPbBr3/CsPb2Br5 nanocrystals with superior water‐repellent and excellent optical property. Low temperature enhanced hydrogen bonding network self‐assembled CsPbBr3/CsPb2Br5 nanocrystals into asymmetric superstructures, which exhibit notable circularly ...
Mei Huang   +7 more
wiley   +1 more source

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