Energie steken in het klimaat

Zelf energie opwekken, op je huidige bedrijf zoveel mogelijk proberen te besparen of een geheel nieuwe bedrijfsopzet maken waarin je fors minder energie verbruikt. Het zijn allemaal mogelijkheden die in de Themagroep Energie van het bedrijfsnetwerk biologische landbouw aan bod komen. De ene melkveehouder besluit vervolgens fors te investeren in energieopwekking, de ander ziet er voorlopig juist van a

Clay smear: Review of mechanisms and applications

AbstractClay smear is a collection of fault processes and resulting fault structures that form when normal faults deform layered sedimentary sections. These elusive structures have attracted deep interest from researchers interested in subsurface fluid flow, particularly in the oil and gas industry. In the four decades since the association between clay-smear structures and oil and gas accumulations was introduced, there has been extensive research into the fault processes that create clay smear and the resulting effects of that clay smear on fluid flow. We undertake a critical review of the literature associated with outcrop studies, laboratory and numerical modeling, and subsurface field studies of clay smear and propose a comprehensive summary that encompasses all of these elements. Important fault processes that contribute to clay smear are defined in the context of the ratio of rock strength and in situ effective stresses, the geometric evolution of fault systems, and the composition of the faulted section. We find that although there has been progress in all avenues pursued, progress has been uneven, and the processes that disrupt clay smears are mostly overlooked. We highlight those research areas that we think will yield the greatest benefit and suggest that taking these emerging results within a more process-based framework presented here will lead to a new generation of clay smear models

Zit er energie, dan kan alles : verhalen van de mens achter het netwerk

Dit rapport is een publicatie van Wageningen UR en het onderzoekprogramma Netwerken in de Veehouderij. Dit programma wordt gefinancierd door het Ministerie van LNV en heeft tussen 2004 en 2008 ruim 120 netwerken van veehouders en anderen ondersteund om te komen tot een duurzame veehouderij. In dit boekje zijn een tiental verhalen opgetekend van netwerkdeelnemers en begeleiders. Ze vertellen hun persoonlijke ervaringen en geven aan wat netwerken voor henzelf en hun bedrijf heeft beteken

Situatie in de Vijfheerenlanden : schade in de fruitteelt door kraaien en reeen

Het vermoeden bestaat dat de toename van schade veroorzaakt door kraaien en reeen in boomgaarden in de Vijfheerenlanden samenhangt met het realiseren van gebieden tot natuurreservaat in dit gebied. In verband met een beperkte verstrekking van vergunningen aan fruittelers om op schadelijke diersoorten te jagen wordt de procedure bij wildschade bekeken en worden aanbevelingen gedaan tot stappen en samenwerkingsmogelijkheden voor preventieve maatregelen voor fruitteler

Using a Ladder of Seeps with computer decision processes to explore for and evaluate cold seeps on the Costa Rica active margin

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Vrolijk, P., Summa, L., Ayton, B., Nomikou, P., Huepers, A., Kinnaman, F., Sylva, S., Valentine, D., & Camilli, R. Using a Ladder of Seeps with computer decision processes to explore for and evaluate cold seeps on the Costa Rica active margin. Frontiers in Earth Science, 9, (2021): 601019, https://doi.org/10.3389/feart.2021.601019.Natural seeps occur at the seafloor as loci of fluid flow where the flux of chemical compounds into the ocean supports unique biologic communities and provides access to proxy samples of deep subsurface processes. Cold seeps accomplish this with minimal heat flux. While individual expertize is applied to locate seeps, such knowledge is nowhere consolidated in the literature, nor are there explicit approaches for identifying specific seep types to address discrete scientific questions. Moreover, autonomous exploration for seeps lacks any clear framework for efficient seep identification and classification. To address these shortcomings, we developed a Ladder of Seeps applied within new decision-assistance algorithms (Spock) to assist in seep exploration on the Costa Rica margin during the R/V Falkor 181210 cruise in December, 2018. This Ladder of Seeps [derived from analogous astrobiology criteria proposed by Neveu et al. (2018)] was used to help guide human and computer decision processes for ROV mission planning. The Ladder of Seeps provides a methodical query structure to identify what information is required to confirm a seep either: 1) supports seafloor life under extreme conditions, 2) supports that community with active seepage (possible fluid sample), or 3) taps fluids that reflect deep, subsurface geologic processes, but the top rung may be modified to address other scientific questions. Moreover, this framework allows us to identify higher likelihood seep targets based on existing incomplete or easily acquired data, including MBES (Multi-beam echo sounder) water column data. The Ladder of Seeps framework is based on information about the instruments used to collect seep information (e.g., are seeps detectable by the instrument with little chance of false positives?) and contextual criteria about the environment in which the data are collected (e.g., temporal variability of seep flux). Finally, the assembled data are considered in light of a Last-Resort interpretation, which is only satisfied once all other plausible data interpretations are excluded by observation. When coupled with decision-making algorithms that incorporate expert opinion with data acquired during the Costa Rica experiment, the Ladder of Seeps proved useful for identifying seeps with deep-sourced fluids, as evidenced by results of geochemistry analyses performed following the expedition.Support for this research was provided through NASA PSTAR Grant #NNX16AL08G and National Science Foundation Navigating the New Arctic grant #1839063. Use of the R/V Falkor and ROV SuBastian were provided through a grant from the Schmidt Ocean Institute. The AUG Nemesis and the Aurora in-situ mass spectrometer was provided through in-kind support from Teledyne Webb Research and Navistry Corp, respectively

Characteristics and Mortality of Pneumocystis Pneumonia in Patients With Cushing's Syndrome: A Plea for Timely Initiation of Chemoprophylaxis

Diabetes mellitus: pathophysiological changes and therap

Sample of Dutch FADN 2012 : design principles and quality of the sample of agricultural and horticultural holdings

The EU Farm Accountancy Data Network (FADN) requires the Netherlands to yearly send bookkeeping data of 1,500 farms to Brussels. This task is carried out by LEI and CEI. This report explains the background of the farm sample for the year 2012. All phases from the determination of the selection plan, the recruitment of farms to the quality control of the final sample are described in this report

Sample of Dutch FADN 2015 : design principles and quality of the sample of agricultural and horticultural holdings

The purpose of the EU Farm Accountancy Data Network (FADN) is to be able to evaluate the income of agricultural holdings and the impacts of the Common Agricultural Policy. The Netherlands is required to yearly send accounting data of a sample of 1,500 farms to the European Commission to contribute to the FADN. This task is carried out by Wageningen Economic Research on behalf of Centre for Economic Information (CEI). This report explains the background of the farm sample for the year 2015. All phases from the determination of the selection plan, the recruitment of farms to the quality control of the final sample are described in this report