Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Impact of cleanliness on the productivity of employees
    Horrevorts, Mirte ; Ophem, Johan Van; Terpstra, Paul - \ 2018
    Facilities 36 (2018)9-10. - ISSN 0263-2772 - p. 442 - 459.
    Clean environment - Cleanliness - Employees - Not-for-profit organizations - Perceived productivity - Work satisfaction

    Purpose: The purpose of this paper is to investigate whether the cleanliness of a work environment has influence on the productivity of employees working in office environments of non-profit organizations in The Netherlands. Design/methodology/approach: In the study, an online survey (including questions about the perceived cleanliness) and two objective cleanliness assessment methods (particle counts and surface cleanliness) are used. The data are collected using an online questionnaire to determine the workers’ perception (of productivity and cleanliness) and to measure the cleanliness (visual assessment of the surface cleanliness and measured [dust] particle counts in the ambient air) at five different non-profit organizations in The Netherlands. Findings: It is found that a higher objective cleanliness correlates significantly with a higher perceived productivity of employees working in office environments of non-profit organizations in The Netherlands. A higher measured cleanliness also correlates significantly with a higher work satisfaction level of employees working in office environments. Finally, a significant correlation is found between the satisfaction of employees with their work as a whole and the perceived productivity of the employees; a higher satisfaction leads to a higher perceived productivity. Research limitations/implications: The cleanliness is measured in five non-profit organizations, so it is not possible to draw any strong generalization. Future studies are needed to confirm or contradict the findings in this research. Practical implications: The results highlight the aspects of the cleanliness in the office environment that influence the perceived productivity. This concerns the measured cleanliness. Employees evaluate their own productivity lower at a higher level of particle counts in the ambient air in the office environment and when more dirt and stain are found on the surface (lower surface cleanliness). In response to these findings, it is recommended to carry out regular cleaning activities in the office environment where the employees perform their work. Overall, to maintain or achieve maximum personal productivity, a clean office environment is important. Originality/value: This research is the first to identify the relationship between perceived productivity and measured cleanliness of the office environment.

    The Dutch Q fever outbreak in perspective: Genotyping as a tool for source tracing and epidemiological investigation
    Tilburg, J.H.H.C. ; Roest, H.I.J. ; Nabuurs-Fransen, M.H. ; Horrevorts, A.M. ; Klaassen, C.H.W. - \ 2013
    Genotyping Reveals the Presence of a Predominant Genotype of Coxiella burnetii in Consumer Milk Products
    Tilburg, J.J.H.C. ; Roest, H.I.J. ; Nabuurs-Fransen, M.H. ; Horrevorts, A.M. ; Klaassen, C.H.W. - \ 2012
    Journal of Clinical Microbiology 50 (2012)6. - ISSN 0095-1137 - p. 2156 - 2158.
    Real-time PCR shows the widespread presence of Coxiella burnetii DNA in a broad range of commercially available milk and milk products. MLVA genotyping shows that this is the result of the presence of a predominant C. burnetii genotype in the dairy cattle population.
    Letter to the editor: Epidemic Genotype of Coxiella burnetii among Goats, Sheep, and Humans in the Netherlands
    Tilburg, J.J.H.C. ; Roest, H.I.J. ; Buffet, S. ; Nabuurs-Fransen, M.H. ; Horrevorts, A.M. ; Raoult, D. ; Klaassen, C.H.W. - \ 2012
    Emerging Infectious Diseases 18 (2012)5. - ISSN 1080-6040 - p. 887 - 889.
    q-fever outbreak
    Genotypic Diversity of Coxiella burnetii in the 2007-2010 Q Fever Outbreak Episodes in The Netherlands
    Tilburg, J.J.H.C. ; Rossen, J.W.A. ; Hannen, E.J. van; Melchers, W.J.G. ; Hermans, M.H.A. ; Bovenkamp, J. van de; Roest, H.I.J. ; Bruin, A. de; Nabuurs-Fransen, M.H. ; Horrevorts, A.M. ; Klaassen, C.H.W. - \ 2012
    Journal of Clinical Microbiology 50 (2012)3. - ISSN 0095-1137 - p. 1076 - 1078.
    The genotypic diversity of Coxiella burnetii in clinical samples obtained from the Dutch Q fever outbreak episodes of 2007-2010 was determined by using a 6-locus variable-number tandem repeat analysis panel. The results are consistent with the introduction of one founder genotype that is gradually diversifying over time while spreading throughout The Netherlands.
    Mineralenconcentraten uit dierlijke mest : monitoring in het kader van de pilot mineralenconcentraten = Mineral concentrates from animal slurry : monitoring of the pilot production plants
    Hoeksma, P. ; Buisonjé, F.E. de; Ehlert, P.A.I. ; Horrevorts, J.H. - \ 2011
    Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 481)
    mestverwerking - concentraten - mesttechnologie - kunstmeststoffen - chemische samenstelling - omgekeerde osmose - drijfmest - manure treatment - concentrates - fertilizer technology - fertilizers - chemical composition - reverse osmosis - slurries
    Processing of animal manure is considered as an opportunity to reduce the pressure on the manure market in the Netherlands. One of the options is to separate the slurry and to use the mineral concentrate, that is produced from the liquid phase by reverse osmosis, as a substitute for mineral fertilizer. Against this background the pilot mineral concentrates was started to study the agricultural, economic and environmental effects of the production and use of mineral concentrates. Within the framework of this pilot in 2009 and 2010 the participating manure processing plants were monitored.
    Mineral concentrates from animal manure
    Hoeksma, P. ; Buisonjé, F.E. de; Horrevorts, J.H. - \ 2010
    dierlijke meststoffen - mineralen - concentraten - mestverwerking - animal manures - minerals - concentrates - manure treatment
    In the pilot project Mineral Concentrates from 2009 to 2011 the technological, agricultural and environmental aspects of the production and application of mineral concentrates from animal manure are studied. Seven producers and a large number of users (arable farmers) participate in the project.
    Alternatieve vormen van regulering co-vergistingsproducten
    Hoop, D.W. de; Ehlert, P.A.I. ; Horrevorts, J.H. ; Tomson, N.C. - \ 2010
    Den Haag : LEI Wageningen UR (Rapport / LEI : Onderzoeksveld Sector & ondernemerschap ) - ISBN 9789086154388 - 53
    organisch afval - dierlijke meststoffen - biogas - regelingen - rentabiliteit - overheidsbeleid - nederland - duitsland - belgië - co-vergisting - alternatieve methoden - biobased economy - organic wastes - animal manures - biogas - regulations - profitability - government policy - netherlands - germany - belgium - co-fermentation - alternative methods - biobased economy
    The study presents advantages and disadvantages of alternative forms of regulating the licensing of cofermentation products in manure fermentation. A comparison is also made with regulations in Germany and Belgium. The advantages and disadvantages of seven alternatives are subsequently discussed. The study indicates that there are possibilities for adjusting the policy in order to make manure fermentation with cofermentation products more profitable within the environmental limiting conditions.
    Mestverwerking met Evodossysteem
    Horrevorts, J.H. ; Hoeksma, P. - \ 2009
    Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 269) - 10
    varkenshouderij - varkens - mest - drijfmest - pig farming - pigs - manures - slurries
    In een proefopstelling op Varkensproefbedrijf Sterksel is onderzoek gedaan naar de scheidingsrendementen van een prototype van de centrifugaalscheider van Evodos bv. Het onderzoek is uitgevoerd met de dunne fractie van varkensdrijfmest die verkregen werd door scheiding middels een vijzelpers. De dunne fractie werd twee keer door de Evodos scheider bewerkt. De resultaten laten zien dat het scheidingsrendement voor P-totaal, droge stof en organische stof zeer hoog zijn. Het scheidingsrendement voor P bij een complete verwerking bedraagt 87%. Tijdens het proces treden geen noemenswaardige verliezen van materiaal op
    Vloerkoeling bij lacterende zeugen
    Hoofs, A.I.J. ; Binnendijk, G.P. ; Horrevorts, J.H. - \ 2009
    Lelystad : Animal Sciences Group (Rapport / Animal Sciences Group 198) - 20
    varkenshouderij - zeugen - biggen - kraamstallen - koelen - vloeren - pig farming - sows - piglets - farrowing houses - cooling - floors
    Praktijkcentrum Sterksel heeft in de periode van 2006-2008 onderzoek verricht naar vloerkoeling bij lacterende zeugen, het zogenaamde cool-sow systeem. Het onderzoek is uitgevoerd in 2 kraamafdelingen gedurende 10 ronden met in totaal 229 zeugen en 672 gespeende biggen. Alle kraamhokken waren voorzien van het cool-sow systeem
    Jaarverslag 2007 Praktijkcentrum Sterksel voor innovaties in de varkenshouderij
    Horrevorts, J.H. ; Dirx-Kuijken, N.C.P.M.M. ; Smolders, M.M.A.H.H. ; Verbraak, J. - \ 2008
    Wageningen : Animal Sciences Group (Rapport / Animal Sciences Group 118) - 27 p.
    Mestexport vanuit Nederland = Manure export from the Netherlands
    Kasper, G.J. ; Horrevorts, J.H. - \ 2007
    Lelystad : Animal Sciences Group (Rapport / Animal Sciences Group, Divisie Veehouderij 87) - 19
    mest - wetgeving - export - dierlijke meststoffen - mestoverschotten - mestverwerking - Nederland - manures - legislation - exports - animal manures - manure surpluses - manure treatment - Netherlands
    Doel van dit onderzoek is door inzicht in de wet- en regelgeving, technieken van mesthygiënisatie en een economische evaluatie van mestexport vanuit Nederland, het Productschap voor Vee en Vlees (PVV) te informeren over huidige en toekomstige ontwikkelingen
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