Results 31 to 40 of about 845,746 (298)

Determining the metallicity of the solar envelope using seismic inversion techniques [PDF]

, 2017
The solar metallicity issue is a long-lasting problem of astrophysics, impacting multi- ple fields and still subject to debate and uncertainties. While spectroscopy has mostly been used to determine the solar heavy elements abundance, helioseismologists ...
Buldgen, Gaël, Dupret, M. A., Noels, A., Reese, D. R., Salmon, S. J. A. J., Scuflaire, R.   +5 more
core   +1 more source

Experimental investigation of the effect of TDS on the thermal performance of the different types of solar stills

AIMS Energy
In regions with a restricted availability of drinkable water, solar stills offer a solution for a passive solar desalination method. In this study, three designs for solar stills are examined: the conventional solar still (CSS), the hemispheric solar ...
Hind I. El-Refaey, Saleh. M. Shalaby, Swellam W. Sharshir, Hewida Omara, Tamer A. Gado   +4 more
doaj   +1 more source

Comparative Study for Evaluation of Mass Flow Rate for Simple Solar Still and Active with Heat Pump [PDF]

Journal of Water and Environmental Nanotechnology, 2017
In isolated and arid areas, especially in the almost Maghreb regions, the abundant solar radiation intensity along the year and the available brackish water resources are the two favorable conditions for using solar desalination technology to produce ...
Hidouri Khaoula, Benhmidene Ali, Chaouachi Bechir, Ravishankar Sathyamurthy   +3 more
doaj   +1 more source

Numerical constraints on the model of stochastic excitation of solar-type oscillations

, 2003
Analyses of a 3D simulation of the upper layers of a solar convective envelope provide constraints on the physical quantities which enter the theoretical formulation of a stochastic excitation model of solar p modes, for instance the convective ...
Goupil, M. J., Nordlund, A., Roxburgh, I., Samadi, R., Stein, R. F.   +4 more
core   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Increased Stepped Solar Stilled Efficiency by Adding Natural Materials

Tikrit Journal of Pure Science
A solar distiller is a good way to get water in remote areas. In this research, a stepped solar distiller with four basins and one slope was used.
Ahood F. Zwaied, Yaseen H. Mahmood
doaj   +1 more source

Low-cost floating solar still for developing countries: Prototyping and heat-mass transfer analysis

Results in Engineering, 2021
Floating solar still is a suitable technology for remote or rural coastal area applications. The device should be made of low-cost materials available locally to provide more access to the broader community. However, the low-cost materials usually do not
Faiz Akbar Raihananda, Evan Philander, Alexander Fernando Lauvandy, Tubagus Ahmad Fauzi Soelaiman, Bentang Arief Budiman, Firman Bagja Juangsa, Poetro Sambegoro   +6 more
doaj   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Enhanced distilled water productivity using an innovative semi-cylindrical tent-shaped solar still coupled with evacuated tubes

International Journal of Thermofluids
Despite advances in enhancing the output of conventional solar stills, the pursuit of the most efficient solar distillation technique remains ongoing. Evacuated tubes, known for their superior thermal capacity compared to traditional single-basin solar ...
Abed Alrzaq Alshqirate, Omar Badran, Omar Quran, Ghazi Al-Marahleh, Abdullah N. Olimat, Aiman Al Alawin, Abdullah Al Shorman, Ali Alahmer   +7 more
doaj   +1 more source