Results 61 to 70 of about 1,896,726 (260)

Scientific Productivity in Transition Countries: Trends and Obstacles [PDF]

open access: yesInterdisciplinary Description of Complex Systems, 2013
Scientific productivity is one of the engines of development in the 21st century. The most common way of its measurement is through publication in peer-review articles.
Iva Radocaj Novak   +2 more
doaj   +1 more source

Dynamical strategies for obstacle avoidance during Dictyostelium discoideum aggregation: a Multi-agent system model [PDF]

open access: yes, 2019
Chemotaxis, the movement of an organism in response to chemical stimuli, is a typical feature of many microbiological systems. In particular, the social amoeba \textit{Disctyostelium discoideum} is widely used as a model organism, but it is not still ...
Maggiora, Marco, Proverbio, Daniele
core   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

A Straight Skeleton Based Connectivity Restoration Strategy in the Presence of Obstacles for WSNs

open access: yesSensors, 2017
Connectivity has significance in both of data collection and aggregation for Wireless Sensor Networks (WSNs). Once the connectivity is lost, relay nodes are deployed to build a Steiner Minimal Tree (SMT) such that the inter-component connection is ...
Xiaoding Wang, Li Xu, Shuming Zhou
doaj   +1 more source

Arctic National Wildlife Refuge Obstacles, Benefits, Solution [PDF]

open access: yes, 2012
I began this research project with the question, “Will the Arctic National Wildlife Refuge ever be opened with the current nation-wide opposition to it”?
Hutchison, Brittany
core  

The equivalent refraction index for the acoustic scattering by many small obstacles: with error estimates

open access: yes, 2014
Let $M$ be the number of bounded and Lipschitz regular obstacles $D_j, j:=1, ..., M$ having a maximum radius $a ...
Ahmad, Bashir   +3 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Premixed Flame Passage Through a Perforated Barrier in a Hele-Shaw Channel

open access: yesFluids
The passage of a premixed stoichiometric methane-air flame through a hole in an internal barrier in a Hele-Shaw channel with one end closed was studied experimentally. It was found that for the same initial conditions, a flame propagating from the closed
Sergey Yakush   +3 more
doaj   +1 more source

Participation in urban life and obstacles for mobility of the elderly in Łódź

open access: yesSpace, Society, Economy, 2017
The article analyzes participation of senior citizens in urban life of Łódź in the context of spending their free time. The paper is also aimed at revealing obstacles for their mobility within the city.
Iwona Pielesiak
doaj   +1 more source

Engineering Porous Hollow Metal‐Poly(Heptazine Imide) Spheres: An Optimized Synthetic Strategy for Controlling Surface, Morphology, and Properties

open access: yesAdvanced Functional Materials, EarlyView.
Hollow poly(heptazine imide) spheres are prepared through a novel approach that integrates hard templating with ionothermal synthesis. This method enables precise control over surface area, pore volume, hydrophilicity, light absorption, band position, and metal composition. These tunable properties facilitate the customized design of semiconductors for
Lingli Ni   +10 more
wiley   +1 more source

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