Results 71 to 80 of about 3,500,055 (323)

Enhanced Bandgap Flexibility in Perovskite‐Silicon Tandem Solar Cells via Three‐Terminal Architecture

Advanced Science, EarlyView.
Three‐terminal (3T) perovskite/silicon tandem solar cells overcome the current‐matching constraints of 2T designs. Using an IBC POLO silicon bottom cell, we demonstrate a 30.1% PCE, with performance largely decoupled from perovskite bandgap and enhanced resilience under realistic, time‐dependent solar spectra.
Mohammad Gholipoor, Michael Rienaecker, Xuzheng Liu, Seyedamir Orooji, Lingyi Fang, Paul Fassl, Renjun Guo, Uli Lemmer, Robby Peibst, Ulrich Wilhelm Paetzold   +9 more
wiley   +1 more source

Circular economy in transportation: empirical evidence of economic and non-economic contributors to bus driver turnover challenges in Hanoi, Vietnam

Humanities & Social Sciences Communications
Establishing the bus plays a vital role in formulating a circular economy in terms of transportation. However, the development of the bus system is confronting a significant challenge of a worker shortage involved in drivers’ turnover intention. Using an
Thi Thuy Dung Nguyen, Minh Hieu Nguyen, Thanh Tung Ha   +2 more
doaj   +1 more source

A push for public health: the effect of e-bikes on physical activity levels

BMC Public Health, 2017
Background Cycling is considered to have a positive effect on public health through increased physical activity. In Norway, the e-bike is seen as a way of getting more people to cycle. However, the motorized assistance of an e-bike potentially eliminates
Hanne Beate Sundfør, Aslak Fyhri
doaj   +1 more source

Geographical disadvantage - a Heckscher-Ohlin-von Thunen model of international specialization [PDF]

The combination of distance, poor infrastructure, and being landlocked by neighbors with poor infrastructure, can make transport costs many times higher for some developing countries than for most others.
Limao, Nuno, Venables, Anthony J.
core  

Electrochemical Nitrate Reduction Reaction to Ammonia at Industrial‐Level Current Densities

Advanced Science, EarlyView.
This review starts from the mechanism and theoretical basis of electrochemical nitrate reduction reaction (NO3−RR), and systematically summarizes and discusses the design strategies of industrial‐level current density catalysts. In addition, the progress of industrial‐level NO3−RR‐based electrolyzers, including flow reactor and membrane electrode ...
Zhijie Cui, Honghai Wang, Chunli Li, Wenchao Peng, Jiapeng Liu   +4 more
wiley   +1 more source

ECONOMIC PARADOXES IN TRANSPORT

Zeszyty Naukowe Uniwersytetu Gdańskiego. Ekonomika Transportu i Logistyka, 2017
Transport is a sphere of economic activity and social life where paradoxes appear at every step, except that they are disregarded and they are not called by name. It is therefore worth making transport professionals sensitive to the paradoxality of many phenomena, especially if it is important for the formulation of relevant theories and scientific ...
openaire   +1 more source

The limits to competition in urban bus services in developing countries [PDF]

The authors make the case for the return of regulation in the organization of urban bus services in developing countries. During the past three decades urban public transport policy has gone through several phases.
Estache, Antonio, Gomez-Lobo, Andres
core  

Circular Potential of Lithium‐Ion Battery Recycling Slags: Quantifying Microstructure and Elemental Distribution for a Holistic Valorization

Advanced Science, EarlyView.
A lithium‐bearing slag is investigated with the goal of holistic valorization. The present β‐eucryptite (LiAlSiO4) exhibits a high lithium content and low levels of impurities. The spinel contains most of the chromium and vanadium, representing additional valorization opportunities.
Peter Cornelius Gantz, Charlize Alexia Senkyr, Rüdiger Kilian, Andreas Neumann, Maximilian Korges, Daniel A. Frick, Hans Roggendorf, Ralf Wehrspohn, Stefan Stöber, Christiane Stephan‐Scherb   +9 more
wiley   +1 more source

Fiscal policy instruments for reducing congestion and atmospheric emissions in the transport sector : a review [PDF]

This paper reviews the literature on the fiscal policy instruments commonly used to reduce transport sector externalities. The findings show that congestion charges would reduce vehicle traffic by 9 to 12 percent and significantly improve environmental ...
Dulal, Hari B., Timilsina, Govinda R.
core  

Neural Information Processing and Time‐Series Prediction with Only Two Dynamical Memristors

Advanced Electronic Materials, EarlyView.
The present study demonstrates how simple circuits with only two memristive devices are utilized to perform high complexity temporal information processing tasks, like neural spike detection in noisy environment, or time‐series prediction. This circuit simplicity is enabled by the dynamical complexity of the memristive devices, i.e.
Dániel Molnár, Tímea Nóra Török, János Volk, Roland Kövecs, László Pósa, Péter Balázs, György Molnár, Nadia Jimenez Olalla, Zoltán Balogh, János Volk, Juerg Leuthold, Miklós Csontos, András Halbritter   +12 more
wiley   +1 more source