Results 41 to 50 of about 479,441 (359)

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

open access: yesAdvanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova   +15 more
wiley   +1 more source

Reconstruction of the Technology for Manufacturing Slate Knives Based on the Results of Studying Materials from Sites of Ancient and Historical Eskimos

open access: yesПоволжская археология
The article deals with reconstruction of the technology for making slate knives of the Eskimos of Chukotka and Russian America, obtained during archaeological excavations and ethnographic collections. To achieve this goal, a comprehensive methodology for
Skakun Natalia N.   +3 more
doaj   +1 more source

Pastoral care of St. Tikhon (Bellavin) of the sailors of the ships of the Russian Imperial navy at the turn of the 19th — 20th centuries [PDF]

open access: yesВестник Православного Свято-Тихоновского гуманитарного университета: Серия ИИ. История, история Русской Православной Церкви
: The history of Orthodoxy in North America is inextricably linked to the navy, as it was born through the labors of Russian missionaries who arrived there by sea.
Sozont Singh
doaj   +1 more source

The Endgame: America’s Exit from Syria [PDF]

open access: yes, 2018
Ever since the 2011 Arab Spring protests in Syria fueled civil war costing nearly half a million lives to date, the US response has been cautious indecision. Syria became a proxy war with Russia, Iran, Hezbollah, the Turks, ISIS, the Kurds, and the local
Thompson, Gray
core   +1 more source

A Biomimetic Buffering Hydrogel Scaffold for Long‐Term Culture of Patient‐Derived Tumor Organoids

open access: yesAdvanced Healthcare Materials, EarlyView.
A biomimetic fibrous buffering hydrogel controls the local acidification at the tumoroid/hydrogel interface at the physiologically relevant level over 21‐day culture. The buffering effect promotes cancer cell proliferation in the tumoroids and supports the structural integrity and mechanical properties of the hydrogel scaffold over long‐term tumoroid ...
Elizaveta Gusarova   +7 more
wiley   +1 more source

Conceptualising the natural environment: critical reflections from Russia, 18th-20th Centuries, 22-23 March 2013 [PDF]

open access: yes, 2013
The workshop was co-organised by Jonathan Oldfield (University of Glasgow, UK) and Julia Lajus (European University at St. Petersburg). It was funded by grants from the UK’s Arts and Humanities Research Council (AHRC) and Economic and Social Research ...
Oldfield, J.
core  

Laser‐Synthesized Amorphous PdSe2‐x Nanoparticles: A Defect‐Rich Platform for High‐Efficiency SERS, Photocatalysis, and Photothermal Conversion

open access: yesAdvanced Materials Interfaces, EarlyView.
Using femtosecond ablation, we show that an ordered, stoichiometric crystalline PdSe2 target can be controllably converted into a stable, disordered, non‐stoichiometric, and highly functional amorphous nanomaterial, PdSe2−x${\rm PdSe}_{2-x}$. The obtained nanoparticles offer significant advantages over conventional planar plasmon‐free substrates due to
Andrei Ushkov   +18 more
wiley   +1 more source

Exploring Possibilities of Colonization of Pacific Northwest by Russia, Great Britain and Spain in the 18th Century

open access: yesRUDN Journal of Russian History
The authors consider different assessments of the history of the northwest coast of America, now the territory of the south of Alaska and the west coast of Canada. For a long time, this territory was an arena of struggle between the great powers.
Aleksandr Yu. Petrov   +1 more
doaj   +1 more source

USA and China in Latin America: Contours of Competition

open access: yesVestnik RUDN. International Relations, 2019
In the last decade Latin America in trade, economic and financial terms turns out to be increasingly “sandwiched” between the United States and China, which accounted for more than half of the total trade of Latin American countries, and also a crucial ...
Petr Pavlovich Yakovlev
doaj   +1 more source

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