Results 31 to 40 of about 99,880 (296)

Comparative measurements of carbon dioxide fluxes from two nearby towers in a central Amazonian rainforest: the Manaus LBA site [PDF]

, 2002
Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously ...
Araújo, A.C., Culf, A.D., Dallarosa, R., Elbers, J.A., Gash, J.H.C., Kabat, P., Kruijt, B., Manzi, A.O., Nobre, A.D., Randow, C., von, Stefani, P., Valentini, R.   +11 more
core   +2 more sources

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

OPTIMIZATION OF A SMALL SOLAR CHIMNEY

Acta Polytechnica, 2020
An optimization study to maximize the exergy efficiency of a small-scale solar chimney was carried out. Optimization variables include collector diameter (Dc), collector height (Hc), tower height (Ht), and tower diameter (Dt).
Janaina Oliveira Castro Silva, Cristiana Brasil Maia   +1 more
doaj   +1 more source

High-Temperature Thermal Storage System for Solar Tower Power Plants with Open-Volumetric Air Receiver Simulation and Energy Balancing of a Discretized Model [PDF]

, 2013
This paper describes the modeling of a high-temperature storage system for an existing solar tower power plant with open volumetric receiver technology, which uses air as heat transfer medium (HTF).
Alexopoulos, Spiros, Doerbeck, Till, Hoffschmidt, Bernhard, Hänel, Matthias, Kronhardt, Valentina, Reißel, Martin, Sattler, Johannes   +6 more
core  

The STACEE-32 Ground Based Gamma-ray Detector

, 2002
We describe the design and performance of the Solar Tower Atmospheric Cherenkov Effect Experiment detector in its initial configuration (STACEE-32). STACEE is a new ground-based gamma ray detector using the atmospheric Cherenkov technique. In STACEE, the
Atwood, Boger, C.E. Covault, C.G. Théoret, Catanese, Chantell, D. Bhattacharya, D.A. Williams, D.R. Schuette, D.S. Hanna, D.T. Gregorich, Giebels, Hanna, Hartman, Hinterberger, Hoffmann, J.A. Hinton, J.A. Zweerink, K. Ragan, L.M. Boone, M. Dragovan, M.C. Chantell, Ning, Ong, Ong, Oser, P. Fortin, R. Mukherjee, R.A. Ong, R.A. Scalzo, S. Oser, T.O. Tümer, Weekes, Z. Conner   +33 more
core   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Impact of solar tower design parameters on sCO2-based solar tower plants

, 2018
Integrating high efficiency sCO2 power cycles into solar tower plants is characterized by high upper temperature and low temperature spread of the cycle working fluid sCO2. New heat transfer media (HTM) are required, enabling higher temperatures and low cost storage.
Buck, Reiner, Giuliano, Stefano
openaire   +4 more sources

Polymer Infiltration Into SURMOF Channels Enables Hydrophobic and Solid‐Like Slippery Functional Thin Films

Advanced Functional Materials, EarlyView.
We report a polymer‐chain insertion strategy to fabricate pore‐threaded MOF thin films with precisely tuned surface chemistry and wettability. Grafting n‐alkane chains into the pillared layer Cu2(bdc)2(dabco) MOF thin film's vertical nanochannels enhances water stability, and induces hydrophobicity and lubricant‐free, solid‐like slippery behavior ...
Angana Borbora, Modan Liu, Hartmut Gliemann, Uttam Manna, Christof Wöll   +4 more
wiley   +1 more source

Techno-Economic and Life Cycle Analysis of Energy Generation Using Concentrated Solar Power (CSP) Technology in Sokoto State. Nigeria

Journal of Applied Sciences and Environmental Management, 2019
: In this work a predictive performance simulation of Solar Tower, Linear Fresnel and Parabolic Trough Concentrating Solar Power (CSP) plants was undertaken for Sokoto State in Northwestern Nigeria. The State was selected based on its high Direct Normal
L. Salisu, J.S. Enaburekhan, A.A. Adamu
doaj   +1 more source

Passive solar reflector satellite revisited [PDF]

, 1980
Passive light weight reflectors in space which direct the incident solar energy to a specified location on the Earth surface are proposed as an alternative system for the solar power satellite to overcome conversion losses and to avoid the need for ...
Daly, J. C., Polk, C.
core   +1 more source