Results 41 to 50 of about 1,235,699 (372)

Marsilio Ficino's Allegorical Reading of Optical Phenomena

open access: yesTeorie vědy, 2020
As a Platonist, Marsilio Ficino (1433–1499) was deeply interested in light  and its qualities. As a matter of fact, the metaphysics of light is so fundamental for him that it appears, treated more or less systematically, almost in all of his works.
Martin Žemla
doaj   +1 more source

The relationship between the Wigner-Weyl kinetic formalism and the complex geometrical optics method

open access: yes, 2005
The relationship between two different asymptotic techniques developed in order to describe the propagation of waves beyond the standard geometrical optics approximation, namely, the Wigner-Weyl kinetic formalism and the complex geometrical optics method,
Duistermaat J. J.   +8 more
core   +2 more sources

Space‐Confined Growth of 2D InI Showing High Sensitivity in Photodetection

open access: yesAdvanced Electronic Materials, 2020
Layered InI has a great potential in optoelectronic applications due to its direct wide tunable bandgap. However, there is no single report about its 2D synthesis. Here, the growth of high‐quality and ultrathin InI flake (as thin as 8 nm) is reported via
Abdulsalam Aji Suleiman   +6 more
doaj   +1 more source

Probing the conserved roles of cut in the development and function of optically different insect compound eyes

open access: yesFrontiers in Cell and Developmental Biology, 2023
Astonishing functional diversity exists among arthropod eyes, yet eye development relies on deeply conserved genes. This phenomenon is best understood for early events, whereas fewer investigations have focused on the influence of later transcriptional ...
Shubham Rathore   +4 more
doaj   +1 more source

Advances in the design and manufacturing of novel freeform optics

open access: yesInternational Journal of Extreme Manufacturing, 2022
Freeform optics has become the most prominent element of the optics industry. Advanced freeform optical designs supplementary to ultra-precision manufacturing and metrology techniques have upgraded the lifestyle, thinking, and observing power of existing
Sumit Kumar, Z. Tong, X. Jiang
semanticscholar   +1 more source

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

open access: yesFEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer   +7 more
wiley   +1 more source

CleAir Monitoring System for Particulate Matter: A Case in the Napoleonic Museum in Rome

open access: yesSensors, 2017
Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented.
Eugenio Fazio   +5 more
doaj   +1 more source

Kirkpatrick Baez X-ray optics for astrophysics: Recent status [PDF]

open access: yes, 2018
X-ray optics in Kirkpatrick Baez arrangement represent promising alternative to Wolter optics in common use. We present briefly recent status of design, developments, and tests of this kind of X–ray optics including Kirkpatrick Baez module developed and ...
Hudec R.   +5 more
core  

Optical Vortices shape Optical Tornados

open access: yesOptics Express, 2023
We demonstrate that by seeding an accelerating ring-Airy beam with a finite number of off-axis optical vortices, it transforms into a Tornado wave (ToW) upon propagation. Using numerical simulations, we show that both the spiraling high-intensity lobes and the optical vortices exhibit angular acceleration and follow interwinding braid-like trajectories.
Apostolos Brimis   +2 more
openaire   +2 more sources

Linked dimers of the AAA+ ATPase Msp1 reveal energetic demands and mechanistic plasticity for substrate extraction from lipid bilayers

open access: yesFEBS Letters, EarlyView.
Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur   +5 more
wiley   +1 more source

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