Results 61 to 70 of about 71,157 (266)

Phyllobilins: Emerging Bioactive Chlorophyll Metabolites and Their Potential Impact on Human Health

open access: yesAntioxidants
Phyllobilins are chlorophyll metabolites that belong to bilin-type linear tetrapyrroles. Chlorophyll, the omnipresent green pigment from algae to higher plants, is essential for life on Earth, underscoring the significance of its metabolites among ...
María del Rosario Serra   +2 more
doaj   +1 more source

An AI‐Enabled All‐In‐One Visual, Proximity, and Tactile Perception Multimodal Sensor

open access: yesAdvanced Robotics Research, EarlyView.
Targeting integrated multimodal perception of robots, an AI‐enabled all‐in‐one multimodal sensor is proposed. This sensor is capable of perceiving three types of modalities, including vision, proximity, and tactility. By toggling an ultraviolet light and adjusting the camera focus, it switches smoothly between multiple perceptual modalities, enabling ...
Menghao Pu   +7 more
wiley   +1 more source

Existence of nanoparticles in azurite and malachite pigments - Raman spectroscopy and X-ray diffraction studies

open access: yes, 2017
The lightness of the color of mineral pigments changes with its particle size. We investigated the Raman spectra of azurite pigments of several particle-size groups, ranging from similar to 5 to similar to 110 mu m.
양인상
core   +1 more source

Pigment Cells and Pigment Cell Tumors in Fish

open access: yesJournal of Investigative Dermatology, 1989
The three basic pigment cell types found in poikilothermic vertebrates, melanocytes (melanin-producing cells), erythrophores (red or yellow pigment cells), and iridophores (iridescence-producing cells), are derived from neural crest. Neoplasms of pigment cells in fish are also of three phenotypes, melanomas (melanophoromas), erythrophoromas, and ...
Masahito, Prince   +2 more
openaire   +2 more sources

TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications

open access: yesAdvanced Robotics Research, EarlyView.
TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince   +3 more
wiley   +1 more source

A quantitative description of fluorescence excitation spectra in intact bean leaves greened under intermittent light

open access: yes, 1990
Pfündel E, Baake E. A quantitative description of fluorescence excitation spectra in intact bean leaves greened under intermittent light. Photosynthesis Research.
Pfündel, Erhard, Baake, Ellen
core   +1 more source

Valorization of novel bifunctional waterborne coatings with UV irradiation resistance and antimicrobial activity

open access: yesScientific Reports
This research aimed to create bifunctional acrylic waterborne coatings capable of absorbing UV radiation and resisting microbial growth. The compound 4-[2(3-acetylphenyl) diazenyl]-3,5-dimethylphenol (ADD) was incorporated into the waterborne acrylic ...
Walaa M. Abd El-Gawad   +2 more
doaj   +1 more source

Fluorescence study of 5-nitroisatin Schiff base immobilized on SBA-15 for sensing Fe3+

open access: yesOpen Chemistry, 2019
N’-(5-nitro-2-oxoindolin-3-ylidene) thiophene-2-carbohydrazide (NH) was successfully synthesized as a ligand, then grafted onto the surface of mesoporous silica SBA-15 via an aminopropyl bridge.
Fahmi Muhammad Riza Ghulam   +6 more
doaj   +1 more source

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

open access: yesAdvanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma   +4 more
wiley   +1 more source

Pigments

open access: yes, 2023
Synthetic pigments utilized in food and other allied industries are basically petrochemical-originated chemical dyes. Due to their chemical or petro-originated nature, they impose adverse impacts on human and environment health that drive to accumulate ...
Sridhar, Kandi   +8 more
core   +1 more source

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