172 research outputs found

    Human rights and the clean development mechanism

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    The 2010 UN climate conference in CancĂșn emphasized that "Parties should, in all climate change related actions, fully respect human rights". However, so far there is no further guidance. This article discusses the relevant legal human rights norms and two case studies from the Kyoto Protocol's Clean Development Mechanism (CDM). The first case (Bajo AguĂĄn, Honduras) shows that the current absence of any international safeguards can lead to registration of highly problematic projects. The second case (Olkaria, Kenya) suggests that safeguards, introduced here as a side effect of World Bank involvement, can have a positive impact, but that it is necessary to have them based on human rights. It therefore seems recommendable that the UN climate regime develop mandatory human rights safeguards. In addition or alternatively, individual buyer countries or groups of countries, such as the European Union, could introduce their own additional requirements for CDM projects

    Climate Change and Transport

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    The transport sector is currently the second largest emitter of carbon dioxide (CO2) emissions, which is the main anthropogenic greenhouse gas (IPCC, 2013). On the global perspective, transport emissions are increasing fast and they might soon catch up with those from the electricity and heat provision sector (IEA, 2015). In 2010 transport generated about 7.0 gigatonnes of direct greenhouse gas emissions. Mainly driven by fast development of emerging economies, transport might double its emissions by 2050 (IEA, 2015). Decarbonising transport is seen as more challenging compared to other sectors (cf. Creutzig et al., 2015). The fifth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC) indicates that the increase in global average surface temperature is very likely due to the observed raise in anthropogenic greenhouse gas emissions and the target to keep global warming below 2L requires severe efforts by the society (IPCC, 2015). In contradiction, transport has not been in the focus of the political agenda (Creutzig et al., 2015) – mainly because policy makers believe that the economy is strongly dependent on cheap mobility and they fear to annoy their voters. The scientific community should strengthen their proclamation that current societies are still focusing on inefficient and oil dependent mobility technologies. Non-motorised modes, public transport, and electric vehicles might provide competitive and efficient abatement options with further social benefits in the future (Creutzig, 2015; Jochem et al., 2015). Otherwise, the ongoing increase in greenhouse gas emissions from transport will highly probably continue for the next decades, due to the rising global vehicle fleet and increasing volumes in freight transport and aviation

    Regional – immer öfter erste Wahl? Argumente fĂŒr die VerknĂŒpfung von „RegionalitĂ€t“ und „Bio“ aus Marketingsicht

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    Im Beitrag soll gezeigt werden, welche Argumente es dafĂŒr gibt, RegionalitĂ€t im Ökologischen Landbau und in der Vermarktung seiner Produkte stĂ€rker zu akzentuieren

    Mapping innovation in the European transport sector : An assessment of R&D efforts and priorities, institutional capacities, drivers and barriers to innovation

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    The present document provides an overview of the innovation capacity of the European transport sectors. The analysis addresses transport-related innovation from three different angles. It identifies the drivers and barriers to innovation for the main transport sub-sectors; it assesses quantitative indicators through the detailed analysis of the main industrial R&D investors and public R&D priorities in transport; and it identifies the key actors for transport research and knowledge flows between them in order to detect shortcomings in the current institutional set-up of transport innovation. The analysis finds that despite the significant on-going research efforts in transport, largely driven by the automotive industry, the potential for systemic innovations that go beyond modal boundaries and leave the currently pre-dominant design are under-exploited due to prominent lock-in effects caused by infrastructure and the institutional set-up of the innovation systemsJRC.J.1-Economics of Climate Change, Energy and Transpor

    Human rights and the clean development mechanism

    Get PDF
    The 2010 UN climate conference in CancĂșn emphasized that "Parties should, in all climate change related actions, fully respect human rights". However, so far there is no further guidance. This article discusses the relevant legal human rights norms and two case studies from the Kyoto Protocol's Clean Development Mechanism (CDM). The first case (Bajo AguĂĄn, Honduras) shows that the current absence of any international safeguards can lead to registration of highly problematic projects. The second case (Olkaria, Kenya) suggests that safeguards, introduced here as a side effect of World Bank involvement, can have a positive impact, but that it is necessary to have them based on human rights. It therefore seems recommendable that the UN climate regime develop mandatory human rights safeguards. In addition or alternatively, individual buyer countries or groups of countries, such as the European Union, could introduce their own additional requirements for CDM projects

    Femtosecond laser-induced surface modification of the electrolyte in solid oxide electrolysis cells

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    Electrolyte-supported solid oxide cells are often used for steam electrolysis. Advantages are high mechanical stability and a low degradation rate. The aim of this proof of concept study was to use a femtosecond laser to process the electrolyte of an electrolyte-supported solid oxide cell and evaluate the effect of this laser treatment on the electrochemical performance. The femtosecond laser treatment induces a macroscopic and a superimposed microscopic structure. It can be proven that the electrolyte remains gas tight and the electrochemical performance increases independently of the laser parameters. The initial area-specific resistance degradation during a constant current measurement of 200 h was reduced from 7.9% for a non-treated reference cell to 3.2% for one of the laser-treated cells. Based on electrochemical impedance measurements, it was found that the high frequency resistance of the laser-treated cells was reduced by up to 20% with respect to the reference cell. The impedance spectra were evaluated by calculating the distribution of relaxation times, and in advance, a novel approach was used to approximate the gas concentration resistance, which was related to the test setup and not to the cell. It was found that the low frequency polarization resistance was increased for the laser-treated cells. In total, the area-specific resistance of the laser-treated cells was reduced by up to 14%

    Supported gold- and silver-based catalysts for the selective aerobic oxidation of 5-(hydroxymethyl)furfural to 2,5-furandicarboxylic acid and 5-hydroxymethyl-2-furancarboxylic acid

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    The sustainable synthesis of two important intermediates relevant for the production of bio-based polymers, 2,5-furandicarboxylic acid (FDCA) and 5-hydroxymethyl-2-furancarboxylic acid (HFCA), via oxidation of 5-(hydroxymethyl)furfural (HMF) was investigated using supported gold- and silver-based catalysts in water with air as the oxidant. High yields and selectivities for the production of FDCA (89%) and HFCA (≄98%) were achieved under the optimized reaction conditions with Au/ZrO2 and Ag/ZrO2 catalysts, respectively. While FDCA was mainly formed in the presence of gold catalysts at a maximum productivity of 67 molFDCA h−1 molAu−1, silver catalysts showed a remarkably high activity in aldehyde oxidation producing HFCA in almost quantitative yields with a maximum productivity of 400 molHFCA h−1 molAg−1. By variation of the reaction parameters, the Au/ZrO2 catalyst could be tuned to produce also HFCA, whereas the Ag/ZrO2 catalyst exclusively produced HFCA in a wide range of reaction parameters. The observed differences in catalyst selectivities can be taken as a starting point for further mechanistic investigation on the oxidation of HMF, contributing to a fundamental understanding of this reaction which is particularly important for establishing the production of bio-based polymers

    Manufacturing and characterization of femtosecond laser-inscribed Bragg grating in polymer waveguide operation in an IR-A wavelength range

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    Optical sensors, such as fiber Bragg gratings, offer advantages compared to other sensors in many technological fields due to their outstanding characteristics. This sensor technology is currently transferred to polymer waveguides that provide the potential for cost-effective, easy, and flexible manufacturing of planar structures. While sensor production itself, in the majority of cases, is performed by means of phase mask technique, which is limited in terms of its degrees of freedom, other inscription techniques enable the manufacture of more adaptable sensor elements for a wider range of applications. In this article, we demonstrate the point-by-point femtosecond laser direct inscription method for the processing of polymer Bragg gratings into waveguides of the epoxy-based negative photoresist material EpoCore for a wavelength range around 850 nm. By characterizing the obtained grating back-reflection of the produced sensing element, we determined the sensitivity for the state variables temperature, humidity, and strain to be 45 pm/K, 19 pm/%, and 0.26 pm/ΌΔ, respectively. Individual and more complex grating structures can be developed from this information, thus opening new fields of utilization
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