Results 151 to 160 of about 3,779,268 (371)

Scaling‐Up of Structural Superlubricity: Challenges and Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
At increasing length‐scales, structural superlubricity (SSL) faces challenges from physical and chemical energy dissipation pathways. This study reviews recent experimental and theoretical progress on these challenges facing the scaling‐up of SSL, as well as perspectives on future directions for realizing and manipulating macroscale superlubricity ...
Penghua Ying   +4 more
wiley   +1 more source

INOVAÇÕES TECNOLÓGICAS NAS INDÚSTRIAS BRASILEIRAS E SEUS IMPACTOS NO MEIO AMBIENTE: uma análise através da PINTEC

open access: yesRevista de Estudos Sociais, 2014
O objetivo deste artigo é avaliar possíveis efeitos das mudanças tecnológicas implementadas pelas empresas brasileiras na mitigação de impactos negativos ao meio ambiente. Para isso foi analisada uma amostra das empresas que inovaram e os seus registros
Carolina Rodrigues Corrêa Rodrigues Corrêa Corrêa   +3 more
doaj  

State-Observation Sampling and the Econometrics of Learning Models

open access: yes, 2011
In nonlinear state-space models, sequential learning about the hidden state can proceed by particle filtering when the density of the observation conditional on the state is available analytically (e.g. Gordon et al., 1993).
Calvet, Laurent E., Czellar, Veronika
core  

Minuscule Amounts of Pt Single Atoms Selectively Loaded on Minor (101) Facet of Anatase Crystallites Enables Outstanding Utilization Efficiency for Photocatalytic H2 Production

open access: yesAdvanced Functional Materials, EarlyView.
Ar–H2 annealing triggers redistribution of pre‐deposited Pt single atoms (SAs) on faceted anatase nanosheets, with selective SAs accumulation on the minor (101) facetsthus the co‐catalytic SA‐sites are positioned only where they are needed, i.e. at the electron exit facets.
Shanshan Qin   +6 more
wiley   +1 more source

Viabilidade Econômica da Inseminação Artificial em Bovinos Leiteiros na Agricultura Familiar de Rondônia

open access: yesRevista de Estudos Sociais, 2011
Mostra-se a viabilidade socioeconômica da Inseminação Artificial (IA) em relação à Monta Natural (MN) utilizada em gado leiteiro da pequena propriedade familiar de Rondônia, onde se produz ainda com gado sem genética específica para a produção de leite ...
José Lima de Aragão   +1 more
doaj  

Space resources. Volume 4: Social concerns [PDF]

open access: yes
Space resources must be used to support life on the Moon and exploration of Mars. This volume, Social Concerns, covers some of the most important issues which must be addressed in any major program for the human exploration of space.
Duke, Michael B.   +2 more
core   +1 more source

Evaluation and Optimization Model of Green Space Ecosystem Services in Urbanization Process

open access: yesFrontiers in Business, Economics and Management
In the rapidly advancing wave of urbanization in China, a series of urban environmental problems have gradually surfaced, seriously threatening the quality of life of residents and the sustainable development of cities. In this context, the importance of
Huixin Zhang
semanticscholar   +1 more source

f‐p‐d Gradient Orbital Coupling Induced Spin State Enhancement of Atomic Fe Sites for Efficient and Stable Oxygen Reduction Reaction

open access: yesAdvanced Functional Materials, EarlyView.
The f‐p‐d (Eu─O─Fe) gradient orbital coupling induces electron delocalization and the introduced f‐band of Eu shifts the spin state of the Fe center in FePc from low‐spin to intermediate‐spin. This strategy simultaneously enhances oxygen reduction reaction (ORR) activity, reaction kinetics, and stability, resulting in superior ORR performance and ...
Ruiqi Cheng   +7 more
wiley   +1 more source

THE POWER OF SELF OR THE „SELF TO SELF” ORIENTED AXIS IN THE RELATIONSHIP WITH PROFESSIONAL BALANCE [PDF]

open access: yesCSIE Working Papers Series, 2018
This article is devoted to the investigation of human-organization space from an eco-human perspective by maintaining the balance between positive and negative effects, as well as adjusting the own resources and internal careers to the requirements of ...
Mariana ZUBENSCHI
doaj  

PROVIDING EQUITABLE SPATIAL DISTRIBUTION OF PROTECTED NATURAL AREAS IN A METROPOLITAN SETTING: AN APPLICATION OF THE LOCATION SET-COVERING PROBLEM [PDF]

open access: yes
We use the location set covering problem to define a natural area site selection model for use in the Chicago region. This framework allows us to explicitly consider the equity of site distribution by stipulating that each population center has access to
Gobster, Paul H.   +3 more
core   +1 more source

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