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3Natural gas extraction from the Groningen gas fields in the Netherlands used to be a non-controversial activity, but became highly contested over the past few years. In addition to a political mandate to commercially operate the Groningen gas fields, NAM needs approval from local residents and society at large. In this study, we analyse how NAM attempted to maintain its social license
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GasTerra is, als exclusieve verkoper van het gas uit de Groningse bodem, een cruciale ketenpartner in de energiesector in Nederland. Om deze strategische positie goed te kunnen vormgeven wil GasTerra de beeldvorming in de Nederlandse samenleving over gas en GasTerra analyseren. Men wil inzicht in of en hoe de rol van gas in de Nederlandse samenleving besproken wordt. GasTerra vraagt daartoe naar een verdiepende analyse van de vorming van de publieke opinie rondom de positie en het imago van gas en GasTerra in het bijzonder. Het lectoraat Communication & Sustainable Society van de Hanzehogeschool Groningen heeft opdracht gekregen onderzoek te verrichten. Een verdiepende discoursanalyse naar de kracht en werking van frames moet inzicht geven en richting geven aan de tone of voice die GasTerra hanteert in haar communicatiestrategie. Ook is er een Rapid Evidence Assessment uitgevoerd om inzicht te verkrijgen in de meest actuele wetenschappelijke stand van zaken rond het gasdebat en opvattingen daaromtrent.
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For centuries, natural gas has been one of humanity’s main energy sources. The gas sector is still heavily reliant on natural gas production; however, as natural gas fields contain only a finite quantity of gas, its continued extraction is leading to the resource’s depletion. Furthermore, natural gas production has become a subject of debate, with many considering continued utilisation incompatible with the achievement of international and European climate goals. The need for alternative gases that are less damaging to the environment is becoming increasingly evident. Biomethane has shown itself to be a reliable alternative to natural gas, and if sourced and manufactured responsibly results in no new CO2 emissions. Another alternative, hydrogen, can, through the process of methanisation, be converted into synthetic natural gas (SNG). This chapter discusses the legal aspects of the production and use of biomethane, hydrogen and SNG.
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This article explores the applicability of smart grid concepts to the Dutch gas network by reflecting on the experience of the electricity sector.
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The here-presented research focuses on the exploration of lupin beans and the analysis and extraction of its valuable components. Lupin beans offer a high protein and lipid content but can also contain toxic quinolizidine alkaloids. For the analytical determination of alkaloids, a method comparison was conducted for Lupinus mutabilis cultivar branco beans and a discrimination of polar alkaloids was revealed. This was particularly the case with solid phase extraction (SPE) and liquid-liquid extraction (LLE), but not with Soxhlet or Randall extraction. Additionally, the protein fraction was extracted via the isoelectric point precipitation and its extraction parameters were analyzed. A successful replacement of hydrochloric acid by carbon dioxide was demonstrated. Lastly, in two attached publications, the extraction of lipids via supercritical carbon dioxide (scCO2) and its influencing parameters were discussed.
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ABSTRACT: Local homebuyers in the Groningen earthquake region
Ir. Hieke T. van der Kloet
Hanze University of Applied Sciences Groningen
Research Centre for Built Environment NoorderRuimte
h.t.van.der.kloet@pl.hanze.nl
0031-50-595-2015
The earthquakes after the natural gas extraction in the Groningen region of the Netherlands have a significant impact on the housing market and sustainability of the communities in this region. Since the strongest earthquake around the community of Huizinge in August 2012, with an magnitude of 3.6 on the Richter scale, it became clear there is a relation between natural gas extraction and earthquakes due to soil subsidence. As a consequence houses in the region get damaged and after research it gets obvious housing prices decline and the region will become unattractive to potential buyers of houses, damaged or not. Therefore the Dutch Petroleum Company (NAM) since April 29th 2014 offers a compensation for the loss of the housing price before and after the earthquake of Huizinge to property owners who want to sell their home. They only get the compensation after a sales deal and only if they agree with the proposed compensation. Since the compensation for the decrease in house prices has been introduced, the number of participants of the regulation is lacking behind the actual sales of houses.
Our study aims to contribute to the research on the consequences of earthquakes by natural gas mining on the real estate market in the northern part of the Netherlands, especially the Groningen region. First of all we want to declare why relatively a large part of the property owners (about 60% until 2015) don’t request for the compensation regulation.
Our second question concerns the buyers of the (damaged) houses in the earthquake area. Why would they buy a home in a region full of risks? Who are these buyers?
We use a mixed-method approach for data collection which leads to an analysis of a unique dataset on notarial deeds of house sales in nine municipalities in the Groningen earthquake region according to The Land Registry of the Netherlands during the period 2013 until the end of 2015 as well as discovering common patterns of interview results with residents and experts.
First results show that the majority of the homebuyers originate from the local earthquake area in the Province of Groningen. Reasons why property sellers after the house sale don’t opt for the compensation regulation concerns the complexity of the regulation, the used valuation model and the expected long control time afterwards.
From the first results we conclude that the Groningen earthquake region still has its attractiveness for local residents and buyers.
Otherwise the regulation for compensation doesn’t reach enough property sellers in the nine municipalities of the Groningen earthquake region.
Advise to the Dutch government should be to generously compensate the residents of the Groningen earthquake regions for the loss of value of their dwellings, damaged or not. This will help to improve the regional development and attractiveness of areas that are effected by earthquakes.
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Within the context of the research programme “Koenst), a natural gas (methane) fuelled heater (Prototype I1) for injection moulding has been developed. When tested, the first prototype of this natural gas fuelled heater showed cracks at some specific spots, especially certain corners inside the hull. Studies showed that these cracks were caused by thermal stress components. A downscaled and re-designed prototype was produced (Prototype II), built for further validation under the appropriate test conditions. Unlike the first prototype, the re-designed prototype showed no cracks. Even though most of the problems were solved in this prototype, it was expected that the efficiency of the heater could be further improved. Aim of the study presented here was to improve the gas fuelled heater through a thermal and constructional re-design. The study has been carried out as part of the research programme “Ontwerpgereedschappen voor Extrusie” (Designtools for Extrusion).
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Due to the depletion of fossil fuel resources and concern about increasing atmospheric CO2 levels, the production of microbial oil as source for energy and chemicals is considered as a sustainable alternative. A promising candidate strain for the production of microbial oil is the oleaginous yeast Schwanniomyces occidentalis CBS 2864. To compete with fossil resources, cultivation and processing of S. occidentalis requires improvement. Currently, different cell wall disruption techniques based on mechanical, chemical, physiological, and biological methods are being investigated using a variety of oil producing yeasts and microalgae. Most of these techniques are not suitable for upscaling because they are technically or energetically unfavorable. Therefore, new techniques have to be developed to overcome this challenge. Here, we demonstrate an effective mild enzymatic approach for cell disruption to facilitate lipid extraction from the oleaginous yeast S. occidentalis. Most oil was released by applying 187 mg L−1 tailor-made enzymes from Trichoderma harzianum CBS 146429 against the yeast cell wall of S. occidentalis at pH 5.0 and 40 °C with 4 h of incubation time after applying 1 M NaOH as a pretreatment step.
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This qualitative study examined how the complex institutional context of gas extraction in Groningen affects relations and processes of trust, and seeks to better understand what is necessary for restoring trust. In the Groningen gas case, responsibilities for dealing with multiple negative consequences of gas extraction are shared by many different organizations who together form a complex institutional system. Numerous professionals are doing their best to help solve the problems. As individuals, case managers and other professionals are seen as benevolent and hard-working people. But as representatives of (large) institutions these professionals struggle to be seen as trustworthy because of persistent problems with institutional performance, with professionals themselves feeling they have insufficient discretionary power. More than interpersonal trust, a different form of trust appears to be at stake here: confidence in the system itself. According to many respondents, confidence in the system is low because the perceived interests of the institutions that shaped this system are not aligned with those of residents and the region. In addition, the positions of power and responsibility within this system are opaque to both residents and professionals. Moreover, the institutional system is perceived to be based on a distrustful attitude toward citizens in general, resulting in elaborate procedures for accountability, control and monitoring. These factors have become obstacles to restoring confidence in the system, no matter how well residents and professionals get along as individuals.
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Assessing the umami taste of seaweed on a chemical level can inform the use and selection of seaweed in European cuisine. Accordingly, we developed a method for the simultaneous extraction, separate clean-up and analysis of 21 free amino acids and 10 free nucleotides by reversed phase and mixed-mode HPLC respectively. Of multiple mouth emulating solvents, extracting in Milli-Q at 35 ◦C was found most suitable. This method showed good linearity (R2 > 0.9996), resolution (Rs ≥ 1.5) and picomole detection limits, and was successfully applied to determine the Equivalent Umami Concentration (EUC) and Taste Activity Values (TAV) of seven Dutch seaweed species. Phaeophyceae showed the highest EUC, followed by Chlorophyceae and Rhodophyceae (≈ 9.5, 3.7 and 1.1 g/100 g respectively). Glutamic acid always exceeded the TAV, while other umami compounds were species specific. Our method can accurately predict umami intensity and therefore contributes towards species selection for the European palette.
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