Results 101 to 110 of about 2,978,769 (241)

Heterogeneous terahertz quantum cascade lasers exceeding 1.9 THz spectral bandwidth and featuring dual comb operation

open access: yesNanophotonics, 2018
We report on a heterogeneous active region design for terahertz quantum cascade laser based frequency combs. Dynamic range, spectral bandwidth and output power have been significantly improved with respect to previous designs. When individually operating
Rösch Markus   +6 more
doaj   +1 more source

Effective methods for increasing levels of political self‐efficacy for girls and disadvantaged students in England

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This study addresses the gap in rigorous evaluation of inclusive Citizenship Education methods in reducing gender and socioeconomic inequalities in political self‐efficacy. This article tests the effectiveness of two pedagogical approaches: counter‐narratives and think‐pair‐share.
Bryony Hoskins   +2 more
wiley   +1 more source

Transfersomes with core and surface‐loaded NF‐κB p65 siRNA for enhanced transdermal transfection and effective treatment of psoriasis

open access: yesBMEMat, EarlyView.
TCPL, a transfersome with Tween 80 and PEI, enables efficient transdermal siNF‐κB delivery, resolving PEI's toxicity issue. It promotes lysosomal escape and effective transfection, silences NF‐κB, modulates immunity, and inhibits angiogenesis, alleviating psoriasis. With good biocompatibility, TCPL holds strong clinical translation potential. Schematic
Hui Xing   +6 more
wiley   +1 more source

Beyond antimicrobials: Ecological nano‐strategies for rebalancing dysbiotic oral microbial homeostasis

open access: yesBMEMat, EarlyView.
Oral microbial homeostasis, a dynamic host‐microbe balance, is vital in infectious diseases. Conventional antibiotics often disrupt this homeostasis, spurring interest in nanomaterials for oral microbial homeostasis rebalancing. This review outlines nanomaterial strategies across three ecological levels (population/community, ecosystem, and cross ...
Chen Hu   +10 more
wiley   +1 more source

Comb-resolved spectroscopy with immersion grating in long-wave infrared

open access: yes, 2018
We have developed a dispersive spectrometer using a compact immersion grating for direct frequency comb spectroscopy in the long-wave infrared region of 8-10 {\mu}m.
Jun Ye (346649)   +4 more
core   +1 more source

Frequency-domain model of optical frequency-comb generation in optical resonators with second- and third-order nonlinearities

open access: yes, 2020
We developed a frequency-domain model describing optical frequency-comb generation in optical resonators with second- and third-order nonlinearities. Compared with time-domain models, our model in principle allows one to express the cavity dispersion ...
Enxu Zhu (14406096)   +2 more
core   +1 more source

Evidence for adaptive explanations of semelparity in animals

open access: yesBiological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher   +1 more
wiley   +1 more source

ESG Uncertainty in Supply Chains: How Rating Divergence Shapes Buyer–Supplier Trade Credit

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Uncertainty in environmental, social, and governance (ESG) ratings has raised concerns about the reliability of sustainability evaluations and their consequences for interfirm relationships. Although prior research has highlighted firm‐level financial outcomes of ESG rating divergence, little is known about its implications for buyer–supplier ...
Liukai Wang, Na A., Yu Gong, Steve Brown
wiley   +1 more source

Frequency Comb Effect on Chaos in Semiconductor Lasers, a Bifurcation Study

open access: yesInternational Journal of Optics
This study investigates the effects of optical frequency comb injection on the chaotic dynamics of semiconductor lasers through a bifurcation analysis. By examining the behavior of semiconductor lasers under different comb parameters (i.e., the number of
Najm M. Al-Hosiny
doaj   +1 more source

Consumer Adoption of Internet of Things

open access: yesJournal of Consumer Behaviour, Volume 24, Issue 2, Page 673-693, March 2025.
ABSTRACT The Internet of Things (IoT), a pivotal technology in enhancing user connectivity, faces a paradox: its widespread potential yet limited consumer adoption. This study addresses this dichotomy by synthesizing a large‐scale meta‐analytic structural equation modeling (MASEM) and hierarchical linear meta‐analysis (HiLMA) of 2736 effect sizes from ...
Wagner Junior Ladeira   +6 more
wiley   +1 more source

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