Results 1 to 10 of about 1,272,790 (293)

Nonlinear Optical Investigation of Microbial Chromoproteins [PDF]

open access: yesFrontiers in Plant Science, 2020
Membrane-bound or cytosolic light-sensitive proteins, playing a crucial role in energy- and signal-transduction processes of various photosynthetic microorganisms, have been optimized for sensing or harvesting light by myriads of years of evolution. Upon
Szilvia Krekic   +8 more
doaj   +7 more sources

Mechanical properties of 3D printed metals [PDF]

open access: yesINCAS Bulletin, 2021
The new challenges in the aerospace field lead to the need to develop new materials with complex shapes, without major intervention in their definition.
Cristina-Elisabeta PELIN   +5 more
doaj   +1 more source

Carbon Dots with an Emission in the Near Infrared Produced from Organic Dyes in Porous Silica Microsphere Templates

open access: yesNanomaterials, 2022
Carbon dots (CDs) with an emission in the near infrared spectral region are attractive due to their promising applications in bio-related areas, while their fabrication still remains a challenging task.
Evgeniia A. Stepanidenko   +13 more
doaj   +1 more source

Optically Quiet Quasars – Radio and Optical Investigations [PDF]

open access: yesSymposium - International Astronomical Union, 1994
The activity in the nuclei of bright galaxies could arise from a number of sources: they may contain compact variable radio sources, they may be strong IR/optical/X–ray continuum sources, or they may have strong emission lines. Usually but not always these properties go together as in radio loud quasars.
Chidi E. Akujor   +3 more
openaire   +1 more source

Ultrasonographic investigation of optic neuritis [PDF]

open access: yesEye, 1995
A pilot echographic study was conducted to determine the incidence and severity of optic nerve swelling in acute 'idiopathic' optic neuritis and to examine cerebrospinal fluid dynamics in the subarachnoid space, employing the method of standardised echography and the '30 degrees test'.
C, Dees, R, Buimer, A D, Dick, H R, Atta
openaire   +2 more sources

Optical-acoustic effect in laser optics investigations [PDF]

open access: yesRevue de Physique Appliquée, 1990
Parameters of the acoustic signals (AS) excited in the massive Al, Be and Cu mirrors by TEA CO2- and Nd : glass-laser pulses were investigated. Correlations between the AS parameters and an emergence of different types of laser-induced damage such as evaporation of heat insulated defects, melting and optical breakdown off irradiated surface have been ...
Aver'Anov, N.E.   +5 more
openaire   +1 more source

Biometric Technologies Based on Optical Coherence Tomography

open access: yesSensors, 2023
Optical coherence tomography (OCT) is one of the newest and most important optical non-invasive methods for the investigation and testing of various materials (e [...]
Tomasz Marciniak
doaj   +1 more source

Investigation towards Laser Cleaning of Corrosion Products from Lead Objects

open access: yesHeritage, 2023
In this work lasers with micro-, nano-, pico- and femtosecond pulse durations were used to clean atmospheric corrosion products from the fragments of a 19th-century lead outdoor sculpture. The state of the surface was studied by optical microscopy, Raman
Denis Prokuratov   +12 more
doaj   +1 more source

Characterization and investigation of NLO properties of some selected electrodeposited polythiophenes [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
In this work we study the electronic properties of ClO−4 doped polythiophenes and discuss the nonlinear optical properties of these organic compounds galvanostatically electrodeposited on ITO glasses.
Figà V.   +4 more
doaj   +1 more source

Characterizations and morphology of sodium tungstate particles [PDF]

open access: yesRoyal Society Open Science, 2018
A solid-state reaction technique was used to synthesize polycrystalline Na2WO4. Preliminary X-ray studies revealed that the compound has a cubic structure at room temperature.
F. Dkhilalli   +6 more
doaj   +1 more source

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