Results 81 to 90 of about 60,015 (288)

Operational stability of mixed Sn–Pb perovskite solar cells: Mechanisms, mitigation strategies, and perspectives

open access: yesBulletin of the Korean Chemical Society, EarlyView.
This review consolidates mechanisms and solutions for mixed Sn–Pb perovskite solar cells. It identifies Sn2+ oxidation, iodine generation, and interfacial defects as primary instabilities. It discusses progress in additives, interface passivation, alternative hole transport layers, and solvent engineering as well as future directions for achieving long‐
Lei Chen, Kai Zhu
wiley   +1 more source

A Possible Monastery and the ‘Upper Maqs’ at Ukma-Akasha West?

open access: yesÉtudes et Travaux (Institute des Cultures Méditerranéennes et Orientales de l'Académie Polonaise des Sciences), 2019
This paper summarises previously unpublished records relating to a series of unusual, and perhaps associated enclosed medieval settlements in the area of Akasha and Ukma West, excavated in 1969 by the Archaeological Survey of Sudanese Nubia.
David N. Edwards
doaj   +1 more source

Dennis Mahan’s Leadership and Tactics: How a West Point Professor Shaped the Course of the Civil War

open access: yes, 2017
This summer, while doing research at Stratford Hall, I happened across the name of one West Point professor who quite literally taught every cadet who fought in the Civil War.
Tarchis, Nick
core  

Confidential Report on the Recent Bombing of Le Havre [PDF]

open access: yes, 2012
Flight Lieutenant R.F. Delderfield was a RAF public relations officer in 1944 when he was ordered to the continent to cover the capture of Le Havre. Arriving about a week after the city was liberated, Delderfield spent two days examining the town and ...
Delderfield, R.F.
core   +1 more source

Planning Practices For The Protection Of Cultural Heritage: Lessons Learnt From The Greek UNESCO Sites [PDF]

open access: yes, 2015
By the case study conducted in the Greek UNESCO sites, it was revealed that, despite the fact that most of the monuments are subjects of multiple zoning, little is accomplished for their spatial protection.
Papageorgiou, Marilena
core   +1 more source

Placental crises: disruptive selection and maternal under‐investment as the foundations of mammalian placental evolution and dysfunction

open access: yesBiological Reviews, EarlyView.
ABSTRACT Among the vertebrates, mammals are notable for the dominance of live birth and placental nutrition. The structural diversity of the mammalian placenta is remarkable, despite sharing a single common ancestor and conserved physiological functions.
Davis Laundon   +5 more
wiley   +1 more source

Samuel Holland: From Gunner and Sapper to Surveyor-General 1755-1764 [PDF]

open access: yes, 2018
The British Army engaged, in 1755, the young Dutch officer, Samuel Holland (whose patron was already the Third Duke of Richmond), to serve in North America as an artillery and engineering subaltern. Following many months’ service directly under the field
Thorpe, Frederick J.
core   +1 more source

Strategic Innovation for Sustainability: A Conceptual Model Linking Digitalization, Social Dynamics, and Climate Change Mitigation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study addresses a significant research gap in the literature by systematically reviewing and synthesizing the interplay between social dynamics, environmental changes, and organizational innovation. Although prior research has explored these dimensions in isolation, the integrative framework remains lacking.
Gagan Deep Sharma   +4 more
wiley   +1 more source

Noi descoperiri defensive în partea de vest a promontoriului Butuceni, raionul Orhei (cercetările arheologice din anul 2015) / Nouvelles découvertes défensive dans l’ouest du promontoire Butuceni, Orhei (Recherche archéologique en 2015)

open access: yesTyragetia, 2016
Les recherches archéologiques menées dans l’été de 2015, à l’Ouest du promontoire Butuceni Orhei, est une suite logique des études qui ont été réalisées en 2013-2014.
Octavian Munteanu
doaj  

Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment [PDF]

open access: yes, 2018
RUIZ-JARAMILLO, J. y GARCÍA-PULIDO, L.J., 2018. Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment. Heritage 2018: 6th International Conference on Heritage and Sustainable Development. Granada:
García-Pulido, Luis José   +1 more
core  

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