Results 81 to 90 of about 229,913 (306)

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

open access: yesAdvanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu   +10 more
wiley   +1 more source

Business Models Innovation for Sustainable Urban Mobility in Small and Medium-Sized European Cities

open access: yesManagement şi Marketing, 2019
Bad air conditions, limitless traffic, overloaded parking spaces are just some of the modern mobility problems that strike cities on a daily basis.
Bellini Francesco   +3 more
doaj   +1 more source

Robust Polymer Hydrogels Improve Electric‐Fish‐Inspired Batteries

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Electric‐fish‐inspired hydrogel batteries based on ion‐concentration gradients offer an attractive route to soft power sources; however, the poor mechanical properties of existing hydrogels limit device assembly and performance. Here, we report poly(ethylene glycol) methyl ether acrylate hydrogels that enable ion‐gradient batteries composed of
Nick Zahnd   +5 more
wiley   +1 more source

City-Size and Health Outcomes: Lessons from the USA [PDF]

open access: yes
In this paper, we compare health outcomes in cities of different sizes. Using 2001 National Health Interview Survey data for adult urban-US population, it is shown that individual health is better in bigger cities compared to small or medium sized ones ...
Achintya Ray, Soumendra N. Ghosh
core  

Analysis of access to hypertensive and diabetic drugs in the Family Health Strategy, State of Pernambuco, Brazil [PDF]

open access: yes, 2015
OBJECTIVE: To evaluate the access to drugs for hypertension and diabetes and the direct cost of buying them among users of the Family Health Strategy (FHS) in the state of Pernambuco, Brazil.
Da Silva Marinho, M.G.   +6 more
core   +1 more source

Algorithmic Design of Disordered Networks With Arbitrary Coordination: Application to Biophotonics

open access: yesAdvanced Functional Materials, EarlyView.
Predictive Design of Disordered Networks: Disordered network‐like morphologies are abundant in nature, from cytoskeletal networks to bone structures and chalcogenide glasses. These structures are naturally hard to characterize. A new algorithmic tool extends the established Wooten–Weaire–Winer (WWW) algorithm to valencies above 4.
Florin Hemmann   +3 more
wiley   +1 more source

“The colossal and the well-ordered” or about culture and management in Switzerland [PDF]

open access: yes
This paper tries to describe for students, for managers, for tourists, the complex experience that I had travelling, for the second time, in the summer of 2010, for a few weeks, in Switzerland, visiting friends, but also discovering again cities, towns ...
Amedeo ISTOCESCU
core  

Les villes moyennes. Analyse démographique et économique, 1971-2001 : Note de recherche [PDF]

open access: yes, 2004
Les villes moyennes supérieures (VMS) au Québec sont au nombre de quatre. Il s’agit de Gatineau, Sherbrooke, Saguenay et Trois-Rivières. Elles se distinguent des autres villes moyennes par leur population plus importante, leur base économique plus solide
Carrier, Mario, Gingras, Patrick
core   +1 more source

Assembly of Cell‐Seeded 3D Printed Hydrogel Modules with Perfusable Channel Networks

open access: yesAdvanced Functional Materials, EarlyView.
Macroscale assembly was utilized to prepare perfusable tissue constructs from individually 3D printed hydrogel modules with embedded branched channel networks and port arrays for cell seeding. Novel multi‐material bioreactors were fabricated to facilitate the gluing of individual modules and the perfusion culture of assembled modular constructs seeded ...
Zachary J. Geffert   +10 more
wiley   +1 more source

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