Results 91 to 100 of about 711,547 (302)

Institutional Explanations of Economic Development: the Role of Precious Metals [PDF]

open access: yes
Recent research has emphasized the influence of colonization on the institutional development and economic performance in former European colonies. Where European colonizers settled, they replicated the investment-conducive institutions found at home. It
Elissaios Papyrakis, Reyer Gerlagh
core  

Rare books as historical objects: a case study of the Elmer E. Rasmuson Library rare books collection [PDF]

open access: yes, 2016
Thesis (M.S.) University of Alaska Fairbanks, 2015Once upon a time all the books in the Arctic were rare books, incomparable treasures to the men and women who carried them around the world.
Korotkova, Ulyana Aleksandrovna   +1 more
core  

High‐Resolution and Real‐Time In Situ Generation of Cellular Spheroids by Laser‐Assisted Bioprinting for Guided Microvascularization

open access: yesAdvanced Functional Materials, EarlyView.
Micro‐injection laser‐assisted bioprinting enables ultrafast and precise patterning of small endothelial cell spheroids by injecting a highly concentrated single‐cell suspension into GelMA/ColMA hydrogels. In co‐culture with fibroblasts, controlled pre‐vasculogenic network formation is obtained at microscale resolution.
Charles Handschin   +9 more
wiley   +1 more source

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

open access: yesAdvanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco   +7 more
wiley   +1 more source

Fools’ Gold: Racism, Social Mobility, and Native Americans during the Gold Rush

open access: yesArmstrong Undergraduate Journal of History, 2021
By the mid-1850s, more than 300,000 individuals had migrated to California, as the discovery of gold tempted many to abandon their poor working and living conditions for the chance to “strike it rich†out west. Often considered the dawn of a new era with boundless opportunities and riches for anyone, the rapid, widespread transcontinental migration ...
openaire   +3 more sources

An Engineered Living Material With Pro‐Angiogenic Activity Inducible by Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
NIR‐responsive engineered living materials (ELMs) for controlled angiogenesis: Near‐infrared (800 nm) light activates engineered probiotic bacteria within alginate‐based living materials to secrete a blood vessel‐regenerating protein. The released protein promotes pro‐angiogenic effects in endothelial networks and chick chorioallantoic membranes.
Anwesha Chatterjee   +4 more
wiley   +1 more source

Prospects of the auriferous content of the North-Bureya metallogenic zone in Priamurskaya province

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2016
It has been established that the North Bureya metallogenic zone is one of the most productive for the mining and alluvial gold in the Priamurskaya province.
V. A. Stepanov, A. V. Melnikov
doaj   +2 more sources

Artifact‐Minimizing Ultrathin Transparent Electrodes Fabricated via iCVD for In Vivo Optogenetic Stimulation and Neural Signal Monitoring of Primary Visual Cortex

open access: yesAdvanced Functional Materials, EarlyView.
We present ultrathin flexible transparent electrodes through iCVD‐enabled molecular control of 10 nm gold films on poly(dimethylaminomethylstyrene). In vivo validation demonstrated photoelectric artifact reduction vs. opaque electrodes and preservation of natural neural dynamics.
Tae Jin Mun   +11 more
wiley   +1 more source

About micro- and nanoscale gold in the veil of gold-bearing territories (on the example of a mineralization site in the basin of the river Adamikha, Amur region)

open access: yesGeoresursy
The article identifies the problem of the need to take into account micro- (1 mm to 0.12 microns) and nanoscale (<0.12 microns) gold in placers and weathering crusts in order to increase the objectivity of their and eroded ore objects potential ...
I. V. Kuznetsova, A. I. Dementienko
doaj   +1 more source

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