Results 81 to 90 of about 1,236,961 (324)

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

open access: yesAdvanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung   +14 more
wiley   +1 more source

Fourier Analysis of CMFD Method in Cylindrical Geometry

open access: yesYuanzineng kexue jishu
The coarse mesh finite difference (CMFD) method has been widely adopted as an acceleration algorithm for neutron transport calculations, effectively reducing computational costs and improving convergence.
WEN Yuchen, HAO Chen, WANG Yizhen
doaj   +1 more source

Increasing Systemic Resilience to Socioeconomic Challenges: Modeling the Dynamics of Liquidity Flows and Systemic Risks Using Navier–Stokes Equations [PDF]

open access: yesSocioEconomic Challenges
Modern economic systems face unprecedented socioeconomic challenges, which make increasing systemic resilience and improving liquidity flow management particularly important.
Davit Gondauri   +2 more
doaj   +1 more source

Mechanically Adaptable High‐Performance p(SBMA‐MMA) Copolymer Hydrogel with Iron (II/III) Perchlorate for Wearable Thermocell Applications

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
A high‐performance n‐type element for quasi‐solid‐state thermocells has been introduced, outperforming conventional p‐type elements and showcasing the potential to harness body heat as an energy source or power embedded sensors. This advance significantly contributes to waste thermal energy harvesting and wearable technology, paving the way for self ...
Gilyong Shin   +10 more
wiley   +1 more source

On the stability of a laminated Timoshenko problem with interfacial slip in the whole space under frictional dampings or infinite memories

open access: yesNonautonomous Dynamical Systems, 2020
The author of the present paper considered in [16] a model describing a vibrating strucure of an interfacial slip and consists of three coupled hyperbolic equations in one-dimensional bounded interval, where the dissipation is generated by either a ...
Guesmia Aissa
doaj   +1 more source

Sharp error estimates for a discretisation of the 1D convection/diffusion equation with Dirac initial data [PDF]

open access: yes, 2004
This paper derives sharp l$\infty$ and l1 estimates of the error arising from an explicit approximation of the constant coefficient 1D convection/diffusion equation with Dirac initial data.
Giles, M. B.
core   +1 more source

Stabilized Intermediate Phase Via Pseudo‐Halide Anions Toward Highly Efficient and Light‐Soaking Stable Perovskite Solar Cells

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The formate pseudo‐halide anion is strategically introduced at the buried interface to stabilize the intermediate phases formed during perovskite crystallization. The controlled crystallization enhances crystallinity and alleviates tensile strain, eliminating residual PbI2 near the buried interface.
Jongdeuk Seo   +12 more
wiley   +1 more source

Evaluating investment decisions based on the business cycle: A South African sector approach

open access: yesCogent Economics & Finance, 2020
Sector investing aims to guide investors in identifying undervalued securities. Knowing which sectors flourish at different phases of the business cycle, investment returns may be boosted by increasing holdings in securities from strengthening sectors ...
Johnny Jansen van Rensburg   +1 more
doaj   +1 more source

Tapered Optical Fiber Sensor for Discrimination of Strain and Temperature

open access: yesAdvances in Electrical and Electronic Engineering, 2020
A simple Mach-Zehnder interferometer (MZI) based on a standard single-mode fiber for simultaneous strain and temperature sensing was proposed and demonstrated experimentally. The interferometer was fabricated by electrical arc discharge method in which a
Mustafa Bilsel, Isa Navruz
doaj   +1 more source

Fourier analysis of random sequences

open access: yesComputers & Mathematics with Applications, 1975
AbstractComputer-generated random sequences were submitted to a Fourier analysis. The distribution of the phase angle was not uniform over the circle, but some “bald patches” remained. The Fourier analysis itself allows the construction of ideal random sequences.
C. Lanczos, B. Gellai
openaire   +2 more sources

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