Results 151 to 160 of about 113,489 (369)

Unifying Asymmetric Inert Fermion Doublet Dark Matter and Leptogenesis with Neutrino Mass [PDF]

open access: yesarXiv, 2012
We propose a scalar Triplet extension of the standard model (SM) to unify the origin of neutrino mass with the visible and dark matter component of the Universe. We assume that the scalar triplet is super heavy, so that its CP-violating out-of-equilibrium decay in the early Universe not only produce asymmetric dark matter which is the neutral component
arxiv  

Manipulating Charge Dynamics in Carbon Nitride by Carbon Dot Doping for Efficient Photocatalysis

open access: yesAdvanced Science, EarlyView.
A series of carbon dot (CD) doped graphitic carbon nitride (g‐C3N4) materials have been rationally synthesized, which exhibited different photophysical properties, excitonic behaviors, and photocatalytic degradation activities. It provides valuable insights to deepen the understanding of exciton dynamics based on g‐C3N4 materials, and rational design ...
Lingfeng Ouyang   +5 more
wiley   +1 more source

B.R.N.O. Contributions #39 Times of minima [PDF]

open access: yes2015OEJV..168....1H, 2015
This paper presents 1463 times of minima for 455 objects acquired by 46 members and cooperating observers of the Variable Star and Exoplanet Section of the Czech Astronomical Society (B.R.N.O. Observing project). Observations were carried out between October 2013 - September 2014. Some neglected southern eclipsing binaries and newly discovered stars by
arxiv  

Looking Beyond “Mow, Blow and Go”: A Case Study of Mexican Immigrant Gardeners in Los Angeles [PDF]

open access: yes, 2007
: Recent research on Mexican immigrants focuses on the working conditions of farm workers, garment workers, janitors and day laborers. This coincides with successful efforts by organized labor and immigrant advocacy groups to organize these marginalized ...
Huerta, Alvaro
core   +2 more sources

Elastic Deformation of Cellulose/Lignin‐Based Anode for Rejuvenating Aged Mix‐Cultured Electroactive Biofilms

open access: yesAdvanced Science, EarlyView.
A new strategy for revitalizing aged biofilms using the elastic deformation of biomass‐based flexible carbon aerogel is proposed. The elastic deformation removes the nonelectrogenic bacteria and the dead electrogenic bacteria, as well as a lot of loosely bound extracellular polymer materials.
Xue Liu   +15 more
wiley   +1 more source

Photoinduced Coupling of Acetylenes and Quinone in the Solid State as Preorganized Donor−Acceptor Pairs [PDF]

open access: yes, 1998
Crystalline electron donor−acceptor (EDA) complexes of various diarylacetylenes (DA) and dichlorobenzoquinone (DB) are isolated and structurally characterized by X-ray crystallography.
Bosch, E.   +3 more
core   +1 more source

Water‐Enhanced Multicolor Electrochromism in Nickel‐Catecholate MOFs

open access: yesAdvanced Science, EarlyView.
This work reports a new multicolor electrochromic behavior in conducting nickel‐catecholate (Ni‐CAT‐1) MOFs, exhibiting transitions from green to blue and then to purple. The coloring mechanism involves the interconversion of C─O, C─O•, and C = O bonds.
Qi Zhao   +15 more
wiley   +1 more source

Spatial Context-Driven Positive Pair Sampling for Enhanced Histopathology Image Classification [PDF]

open access: yesarXiv
Deep learning has demonstrated great promise in cancer classification from whole-slide images (WSIs) but remains constrained by the need for extensive annotations. Annotation-free methods, such as multiple instance learning (MIL) and self-supervised learning (SSL), have emerged to address this challenge; however, current SSL techniques often depend on ...
arxiv  

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