Results 91 to 100 of about 6,893 (211)

Les productions lithiques de l’Archipel indonésien

open access: yesJournal of Lithic Studies, 2017
Proposer une synthèse sur la préhistoire d’un archipel et de ses assemblages lithiques n’est pas chose facile, d’une part à cause de l’immensité de l’espace concerné mesurant 2 millions de km2, d’autre part du fait que la notion de Paléolithique y est ...
Hubert Forestier   +3 more
doaj   +1 more source

Titanium‐Doped In2O3: A High‐Mobility, Thermally Stable Back Contact for Bifacial Chalcopyrite Solar Cells

open access: yesSolar RRL, Volume 10, Issue 6, 29 March 2026.
In2O3:Ti is identified as a thermally stable and highly near‐infrared transparent back contact for (Ag,Cu)(In,Ga)Se2 solar cells and modules. Under rear illumination, the short‐circuit current density is improved by ≈ 3 mA/cm2 as compared with a more standard In2O3:Sn back electrode.
Jan Keller   +5 more
wiley   +1 more source

La cueva Epullán Grande, provincia del Neuquén: Análisis de los artefactos líticos del Período Tardío (1100 AP - contacto)

open access: yesRuna, 2008
El sector analizado tuvo una serie de ocupaciones sucesivas y breves, lo que no permite confirmar su estacionalidad. Se encontró cerámica desde la base de la pila sedimentaria.
Oscar Martín Palacios
doaj  

Lithic economies and community organization at La Laguna, Tlaxcala [PDF]

open access: yes, 2016
Site-wide, assemblage-based lithic analyses help to elucidate community dynamics including variability in domestic economies, technological skill and decision making, exchange networks, and ritual practices.
Carballo, David M., Walton, David P.
core   +1 more source

Li Incorporation Induces Surface Chemical Disorder in Solution‐Processed Cu2ZnSn(S,Se)4

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 5, 4 March 2026.
Lithium incorporation into Cu2ZnSn(S,Se)4 (CZTSSe) thin‐film semiconductors is highly beneficial for solar power conversion efficiencies, although directly visualising its impact on the absorber is difficult. Energy‐filtered photoemission electron microscopy measurements reveal lithium alloying induces surface chemical disorder of CZTSSe, highlighted ...
Alice Sheppard   +9 more
wiley   +1 more source

The Varga Site: A Multicomponent, Stratified Campsite in the Canyonlands of Edwards County, Texas [PDF]

open access: yes, 2008
Data recovery excavations at the Varga Site were conducted in two phases during 2002 by archeologists from the Cultural Resources Department of TRC Environmental Corporation’s (TRC’s) Austin office under contract to Texas Department of Transportation ...
Cody, Mercedes C.   +6 more
core   +2 more sources

Stability of Lead‐Free Perovskite Solar Cells

open access: yesAdvanced Sustainable Systems, Volume 10, Issue 3, March 2026.
This review article discusses the very recent status of stability of lead‐free perovskite solar cells, possible challenges, fabrication techniques, the degradation mechanism of lead‐free PSCs affecting stability, possible causes hindering the simultaneous improvement of efficiency and stability of lead‐free PSCs, potential outlook, and future research ...
Pranta Barua   +4 more
wiley   +1 more source

Solution‐Processed Organic Photovoltaics: Fabrication Advances and Challenges

open access: yesAdvanced Science, Volume 13, Issue 14, 9 March 2026.
This review highlights recent advances in organic photovoltaic (OPV) device fabrication, emphasizing how material selection, interface engineering, and scalable processing techniques shape device performance. It discusses progress in photoactive and charge transport layers, electrode optimization, and large‐area manufacturing, offering insights into ...
Kerui Liu   +4 more
wiley   +1 more source

Um notável biface acheulense da Serra do Brunheiro (Chaves) [PDF]

open access: yes, 1999
A peça objecto deste estudo foi encontrada, conjuntamente com outra semelhante, na Serra do Brunheiro, a nascente de Chaves, em finais do século passado; pertence a particular, que muito amavelmente a pôs à nossa disposição, pelo que, desde já, lhe ...
Cardoso, João Luís   +1 more
core  

Inventory and Assessment of Cultural Resources Above the 1,551.5-Foot Contour Line, Stacy Reservoir Recreation Areas, Concho, Coleman, and Runnels Counties, Texas [PDF]

open access: yes, 1988
In August and September 1986, personnel from Prewitt and Associates, Inc. conducted an inventory and assessment of cultural resources in five recreational area tracts above the conservation pool elevation of the proposed Stacy Reservoir in Concho ...
Bryan, Willliam A., Collins, Michael B.
core   +2 more sources

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