Results 41 to 50 of about 7,662 (229)

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel   +6 more
wiley   +1 more source

Andean tectonics: Implications for Satellite Geodesy [PDF]

open access: yes
Current knowledge and theories of large scale Andean tectonics as they relate to site planning for the NASA Crustal Dynamics Program's proposed high precision geodetic measurements of relative motions between the Nazca and South American plates are ...
Allenby, R. J.
core   +1 more source

Market-based Instruments for Environmental Policymaking in Latin America and the Caribbean: Lessons from Eleven Countries [PDF]

open access: yes, 1998
This report is a summary of country studies in Latin America and the Caribbean, addressing the use of market-based instruments (MBIs) and command-and-control (CAC) measures for environmental management in the region.
Jack Ruitenbeek   +2 more
core  

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar   +5 more
wiley   +1 more source

Computing functional urban areas using a hierarchical travel time approach: An applied case in Ecuador [PDF]

open access: yes, 2017
Identifying integrated urban areas is an important issue for urban analysis and policy evaluation. In this paper, we extend the OECD’s methodology to identify Functional Urban Areas to countries where there is not commuting data.
Obaco Álvarez, Moisés Lenyn   +2 more
core  

Evaluación sostenible de los Planes Directores de Quito. Periodo 1942-2012 = Sustainable urban evaluation of Quito´s Master Plans. Period 1942-2012 [PDF]

open access: yes, 2016
Resumen Ante el gran problema de expansión y las malas condiciones de vida de los barrios de la periferia de las ciudades latinoamericanas, una primera y rápida conclusión podría ser que no han existido criterios de sostenibilidad en el Planeamiento ...
Higueras García, Ester   +1 more
core   +2 more sources

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

open access: yesAdvanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang   +9 more
wiley   +1 more source

Transparent Inorganic–Organic Bilayer Neural Electrode Array and Integration to Miniscope System for In Vivo Calcium Imaging and Electrophysiology

open access: yesAdvanced Functional Materials, EarlyView.
This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han   +17 more
wiley   +1 more source

Mantenerse público o privatizar? Análisis comparativo del servicio de agua entre Quito y Guayaquil [PDF]

open access: yes
En el presente documento se analiza la evolución de algunos indicadores sobre la provisión de agua potable en las dos principales ciudades de Ecuador.
Elizabeth Coombs   +2 more
core  

Segundo Congreso Salesiano de Ciencia, Tecnología e Innovación para la Sociedad [PDF]

open access: yes, 2016
La segunda edición del Congreso Salesiano de Ciencia, Tecnología e Innovación para la Sociedad, CITIS, realizado el 2 y 3 de diciembre de 2015 y organizado por la Universidad Politécnica Salesiana (sede Guayaquil), ofreció un espacio idóneo para la ...
Agila, W.   +30 more
core  

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