Results 81 to 90 of about 2,184,715 (304)

Quantitative cytoarchitectural phenotyping of deparaffinized human brain tissues

open access: yesCommunications Biology
Advanced 3D imaging techniques and image segmentation and classification methods can transform biomedical research by offering insights into the human brain cytoarchitecture under pathological conditions.
Danila Di Meo   +17 more
doaj   +1 more source

Modeling Longitudinal Oscillations of Bunched Beams in Synchrotrons [PDF]

open access: yes, 2010
Longitudinal oscillations of bunched beams in synchrotrons have been analyzed by accelerator physicists for decades, and a closed theory is well-known [1].
Klingbeil, Harald   +3 more
core  

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

High pressure synthesis of phosphine from the elements and the discovery of the missing (PH3)2H2 tile

open access: yesNature Communications, 2020
Chemical elements at high pressure may behave more consistently with their periodic properties than they do at ambient conditions. The authors report the synthesis of PH3 from black phosphorous and hydrogen, and the crystallization of the van der Waals ...
Matteo Ceppatelli   +8 more
doaj   +1 more source

Rapid Diagnostics of Reconfigurable Intelligent Surfaces Using Space‐Time‐Coding Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A fast reconfigurable‐intelligent‐surface (RIS) diagnostics method is proposed based on spatio‐temporal modulation with orthogonal codes. Theoretical analysis demonstrates a clear distinction in code channel power between normal and faulty elements. Simulations validate its feasibility under high fault ratios and varying receiving angles.
Yi Ning Zheng   +7 more
wiley   +1 more source

Niosomes as Vesicular Nanocarriers in Cosmetics: Characterisation, Development and Efficacy

open access: yesPharmaceutics
In an era of significant developments in cosmetic chemistry and growing demand for efficacious skincare products, the efficient delivery of active molecules has been a challenge in formulations of cosmetics.
Marko Lens
doaj   +1 more source

Crystalline polymeric carbon dioxide stable at megabar pressures

open access: yesNature Communications, 2018
The nature and stability of carbon dioxide under extreme conditions relevant to the Earth’s mantle is still under debate, in view of its possible role within the deep carbon cycle.
Kamil F. Dziubek   +6 more
doaj   +1 more source

The Lens-Redshift Test Revisited [PDF]

open access: yes, 2000
Kochanek (1992) suggested that the redshifts of gravitational lens galaxies rule out a large cosmological constant. This result was questioned by Helbig & Kayser (1996), who pointed out that selection effects related to the brightness of the lens can ...
Helbig, Phillip
core   +3 more sources

A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: Implications for $H_0$

open access: yes, 2017
Strong gravitational lensing provides an independent measurement of the Hubble parameter ($H_0$). One remaining systematic is a bias from the additional mass due to a galaxy group at the lens redshift or along the sightline.
French, K. Decker   +6 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

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