scholarly journals Environmental Aspects of the Use of CNG in Public Urban Transport

10.5772/62978 ◽  
2016 ◽  
Author(s):  
Jerzy Merkisz ◽  
Michal Dobrzynski ◽  
Miloslaw Kozak ◽  
Piotr Lijewski ◽  
Pawel Fuć
Keyword(s):  
Urban Transport ◽  
Environmental Aspects

scholarly journals Framing Electric Mobility for Urban Sustainability in a Circular Economy Context: An Overview of the Literature

2021 ◽  
Vol 13 (14) ◽  
pp. 7786
Author(s):  
Walter Leal Filho ◽  
Ismaila Rimi Abubakar ◽  
Richard Kotter ◽  
Thomas Skou Grindsted ◽  
Abdul-Lateef Balogun ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Circular Economy ◽  
Environmental Performance ◽  
Urban Transport ◽  
Transport Sector ◽  
Environmental Aspects ◽  
Medium Term ◽  
Urban Quality Of Life ◽  
Electro Mobility

The development of electro-mobility is one of the centerpieces of European country attempts to reduce carbon emissions and increase the quality of life in cities. The goals of reducing emissions from the transport sector and phasing out fossil-fueled vehicles in (urban) transport by 2050 present unrivaled opportunities to foster electro-mobility. This paper provides a comprehensive review of the literature and provides a detailed analysis of the current development of electro-mobility in Europe, assessing social, economic, and environmental aspects under a circular economy (CE) context. It also examines the existing challenges and suggests ways of addressing them towards improving the environmental performance of electro-mobility and the urban quality of life. The paper argues that a narrow technology-only agenda in electro-mobility will be less successful without the imperative of the CE, including not just materials and resources but also energy, to unlock the medium-term co-benefits of de-carbonization of both the transport as well as the building and energy sectors. The paper critically reviews some of the anticipated future developments that may guide the growth of this rapidly growing field into a CE.

scholarly journals Direct and Indirect Environmental Aspects of an Electric Bus Fleet Under Service

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 336 ◽  
Author(s):  
Bogdan Ovidiu Varga ◽  
Florin Mariasiu ◽  
Cristian Daniel Miclea ◽  
Ioan Szabo ◽  
Anamaria Andreea Sirca ◽  
...  
Keyword(s):  
Electric Propulsion ◽  
Urban Transport ◽  
Pollutant Emissions ◽  
Environmental Aspects ◽  
Pollution Levels ◽  
Electric Bus ◽  
High Pollution ◽  
Diesel Buses ◽  
The City ◽  
Harmful Effects

The reduction of pollutant emissions in the field of transportation can be achieved by developing and implementing electric propulsion technologies across a wider range of transportation types. This solution is seen as the only one that can offer, in areas of urban agglomeration, a reduction of the emissions caused by the urban transport to zero, as well as an increase in the degree of the health of the citizens. This paper presents an analysis of the direct and indirect environmental aspects of a fleet of real electric buses under service in the city of Cluj-Napoca, Romania. The solution of using 41 electric buses to replace Euro-3 diesel buses (with high pollution levels) in the city’s transport system eliminates a local amount of 668.45 tons of CO2 and 6.41 tons of NOx—pollutant emissions directly associated with harmful effects on human health—annually.

scholarly journals Life Cycle Cost (LCC) Level of an Urban Transport Fleet with Differentiated Share of Buses with Alternative Drive Systems

2020 ◽  
Vol 22 (3) ◽  
pp. 68-77
Author(s):  
Emilia M. Szumska ◽  
Rafal S. Jurecki ◽  
Marek Pawelczyk
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Alternative Fuels ◽  
Urban Transport ◽  
Environmental Aspects ◽  
Compressed Natural Gas ◽  
Alternative Drive ◽  
Urban Public Transport ◽  
Drive Systems ◽  
The Cost

In recent years, there has been a significant increase in the number of buses operated by urban public transport companies powered by alternative fuels and equipped with alternative drive systems. In addition to economic factors, operators should also take environmental aspects into account when purchasing new vehicles. In this case, a useful criterion for selecting a vehicle is the Life Cycle Cost (LCC), which, in addition to the cost of purchasing a bus, takes into account the necessary expenses associated with its maintenance, operation, decommissioning, as well as emissions costs. This paper presents a study of the LCC values, estimated for the entire bus fleet based on several bus replacement variants, taking into account different shares of alternative buses in the transport fleet. Analyses have shown that replacing conventional buses by the compressed natural gas (CNG) powered buses will reduce life cycle cost by 27% compared to the LCC level in 2019. Increasing the share of electric buses in the fleet will significantly reduce the level of emissions of harmful substances contained in exhaust gases.

scholarly journals Evaluation of the efficiency of hybrid drive applications in urban transport system on the example of a medium size city

2018 ◽  
Vol 180 ◽  
pp. 03004
Author(s):  
Marek Pawełczyk ◽  
Emilia Szumska
Keyword(s):  
Local Governments ◽  
Urban Transport ◽  
Medium Size ◽  
Environmental Aspects ◽  
Large Cities ◽  
Driving Cycles ◽  
Alternative Drive ◽  
Consumption Reduction ◽  
Harmful Emissions ◽  
Drive Systems

Unconventional drive systems of the urban buses become more and more popular. The reason is clear: reduction of the harmful emissions as well as the fuel consumption reduction. Environmental aspects are becoming of the great importance. Local governments of large cities are “pushing” conventional buses away from city centres, trying to substitute them by the other more environmentally friendly urban vehicles. The goal of the contribution is to present a comparison of the selected types of the urban buses equipped with alternative drive systems under conditions of medium size city. The first part of the paper presents the methodology and construction of urban bus driving cycles prepared for Kielce city (Poland). The next part shows fuel economy and energy consumption obtained from simulation of urban buses powered by conventional diesel engine and hybrid electric drive under the developed driving cycles. The last part presents results of the Total Cost of Ownership (TCO) calculations estimated for selected urban buses.

Factors Related to Childhood Suicides

Crisis ◽  
2014 ◽  
Vol 35 (5) ◽  
pp. 292-300 ◽  
Author(s):  
Rebecca Soole ◽  
Kairi Kõlves ◽  
Diego De Leo
Keyword(s):  
Child Death ◽  
Behavioral Difficulties ◽  
Childhood And Adolescence ◽  
Environmental Aspects ◽  
Indigenous Children ◽  
External Causes Of Death ◽  
External Causes ◽  
Causes Of Deaths ◽  
Gender Asymmetry ◽  
Control Study

Background: Suicide among children under the age of 15 years is a leading cause of death. Aims: The aim of the current study is to identify demographic, psychosocial, and psychiatric factors associated with child suicides. Method: Using external causes of deaths recorded in the Queensland Child Death Register, a case-control study design was applied. Cases were suicides of children (10–14 years) and adolescents (15–17 years); controls were other external causes of death in the same age band. Results: Between 2004 and 2012, 149 suicides were recorded: 34 of children aged 10–14 years and 115 of adolescents aged 15–17 years. The gender asymmetry was less evident in child suicides and suicides were significantly more prevalent in indigenous children. Children residing in remote areas were significantly more likely to die by suicide than other external causes compared with children in metropolitan areas. Types of precipitating events differed between children and adolescents, with children more likely to experience family problems. Disorders usually diagnosed during infancy, childhood, and adolescence (e.g., ADHD) were significantly more common among children compared with adolescents who died by suicide. Conclusion: Psychosocial and environmental aspects of children, in addition to mental health and behavioral difficulties, are important in the understanding of suicide in this age group and in the development of targeted suicide prevention.

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