Results 61 to 70 of about 119,236 (313)

PCM-Based heat exchanger for Low-Temperature hybrid residential air conditioning with ground-source heat pumps: Design and validation

open access: yesResults in Engineering
This work presents the design, experimental validation, and performance evaluation of a patented phase change material–based thermal energy storage (PCM-TES) heat exchanger integrated into a hybrid open-loop ground-source heat pump (GSHP) system for low ...
J.M. García-Alonso   +3 more
doaj   +1 more source

Parker Solar Probe Observations of High Plasma β Solar Wind from the Streamer Belt

open access: yesThe Astrophysical Journal Supplement Series, 2023
In general, slow solar wind from the streamer belt forms a high plasma β equatorial plasma sheet around the heliospheric current sheet (HCS) crossing, namely, the heliospheric plasma sheet (HPS).
Jia Huang   +25 more
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim   +21 more
wiley   +1 more source

Transport of Solar Wind Fluctuations: A Two-Component Model

open access: yes, 2011
We present a new model for the transport of solar wind fluctuations which treats them as two interacting incompressible components: quasi-two-dimensional turbulence and a wave-like piece.
Matthaeus, William H.   +13 more
core   +1 more source

Scaling in long term data sets of geomagnetic indices and solar wind ϵ as seen by WIND spacecraft [PDF]

open access: yes, 2003
We study scaling in fluctuations of the geomagnetic indices (AE, AU, and AL) that provide a measure of magnetospheric activity and of the ε parameter which is a measure of the solar wind driver.
Chapman, S.C.   +8 more
core   +1 more source

Impact of solar radiation variation on the optimal tilted angle for fixed grid-connected PV array—case study in Beijing

open access: yesGlobal Energy Interconnection, 2018
A key design parameter for fixed grid-connected photovoltaic (PV) arrays, the optimal tilt angle, does not only depend on the geographic location but is also directly affected by atmospheric conditions.
Yanbo Shen   +3 more
doaj   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

The magnetosphere under weak solar wind forcing [PDF]

open access: yes, 2007
The Earth's magnetosphere was very strongly disturbed during the passage of the strong shock and the following interacting ejecta on 21–25 October 2001. These disturbances included two intense storms (Dst*≈−250 and −180 nT, respectively).
Rich, F. J.   +28 more
core   +1 more source

Homogenous FACsPbI3 Perovskite Solar Cells Enabled by a Seed‐Facilitated Cation Exchange Strategy

open access: yesAdvanced Functional Materials, EarlyView.
A novel seed‐facilitated cation exchange strategy is designed for homogenous FACsPbI3 perovskites using the biomass‐derived solvent γ‐valerolactone. Pre‐deposited 0D Cs4PbI6 seeds induce rapid nucleation and efficient cation exchange, producing a uniform FA–Cs distribution and significantly reducing defect density, enabling high‐performance and stable ...
Meng Ren   +10 more
wiley   +1 more source

Circadian rhythms in the university community: perception of health (dis) synchronisation

open access: yesCogent Education
The aim of this research is to analyze circadian typologies in the community of the University of Burgos (Spain). In this study, 1,067 participants from three groups (students (ST), administrative and service staff (AS) and teaching and research staff ...
María Fernández Hawrylak   +4 more
doaj   +1 more source

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