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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    Haiti technical cold chain dry run : applying distributed ledger technology to connect Haitian mango and avocado producers toforeign markets
    Oostewechel, Rene ; Régis, Yves-Laurent ; Brouwers, Jan ; Vogels, Jan ; Smeenk, Anton ; Ren, Xin-Ying - \ 2018
    Wageningen : Wageningen Food & Biobased Research (Wageningen Food & Biobased Research report 1838) - ISBN 9789463434706 - 33
    This report provides the technical results of a dry run transporting mangoes and avocados from Haiti to the US, Canada and The Netherlands. For both fruits, temperature has been registered from the moment of harvest till arrival at all destinations. Also logistical data related to the planning and preparation of the test, time needed for each step, and quality of fruits has been analysed. After the introduction chapter, technical data are provided for both mango and avocado in the next two chapters, with a concluding last chapter afterwards that provides overall analysis, lessons learned and recommendations. Use of the QR codes has allowed a transparent and digital process where all chain partners have open access to all information. The report presents a block chain test at limited level and actual implementation and scaling of block chain procedures might still need refinement like the longer ripening and/or storage before retail distribution.
    Blockchain for agriculture and food : Findings from the pilot study
    Ge, Lan ; Brewster, Christopher ; Spek, Jacco ; Smeenk, Anton ; Top, Jan ; Diepen, Frans van; Klaase, Bob ; Graumans, Conny ; Ruyter de Wildt, Marieke de - \ 2017
    Wageningen : Wageningen Economic Research (Wageningen Economic Research report 2017-112) - ISBN 9789463438179 - 33
    This report documents experiences and findings from the public private partnership (PPP) project ‘Blockchain for Agrifood’ that was started in March 2017. The project aims to contribute to a better understanding of the blockchain technology (BCT) and its implications for agrifood, especially how it can impact specific aspects of supply chains and what is needed to apply BCT in agrifood chains. A second aim of this project is to conceptualise and develop a proof of concept in an application based on a use case concerning table grapes from South Africa where BCT could be applied. This has been done by building a demonstrator that keeps track of different certificates involved in the table grapes supply chain. The code of this demonstrator is published at Github. Furthermore, the project explored issues regarding the relevance, applicability and implications of BCT for the agrifood sector through literature study and stakeholder consultation.
    Are white-beaked dolphins Lagenorhynchus albirostris food specialst? Their diet in the southern North Sea
    Jansen, O.E. ; Leopold, M.F. ; Meesters, H.W.G. ; Smeenk, C. - \ 2010
    Journal of the Marine Biological Association of The United Kingdom 90 (2010)8. - ISSN 0025-3154 - p. 1501 - 1508.
    eumetopias-jubatus - halichoerus-grypus - marine mammals - hard parts - digestion - otoliths - prey - waters - cod - cetaceans
    The white-beaked dolphin Lagenorhynchus albirostris is the most numerous cetacean after the harbour porpoise Phocoena phocoena in the North Sea, including Dutch coastal waters. In this study, the diet of 45 white-beaked dolphins stranded on the Dutch coast between 1968 and 2005 was determined by analysis of stomach contents. Although 25 fish species were identified, the diet was dominated by Gadidae (98.0% by weight, 40.0% in numbers), found in all stomachs. All other prey species combined contributed little to the diet by weight (2.0%W). The two most important prey species were whiting Merlangius merlangus (91.1% frequency of occurrence (FO), 30.5%N, 37.6%W) and cod Gadus morhua (73.3%FO, 7.4%N, 55.9%W). In numbers, gobies were most common (54.6%N), but contributed little to the diet by weight (0.6%W). Three stomachs contained different prey compared to the others: one animal had taken 2250 gobies, accounting for 96.4% of all gobies found; one animal had fed on 29 small sepiolids; and one animal had solely taken haddock Melanogrammus aeglefinus. Squid and haddock were not found in any other stomach. The overall diet showed a lasting predominance of whiting and cod, without clear changes over time (35 years) or differences between sexes or size-classes of dolphins. This study adds to earlier published and unpublished data for Dutch coastal waters and agrees well with studies of white-beaked dolphins from other parts of the species’ range, in the North Sea and in Canadian waters, with Gadidae dominating the diet on both sides of the Atlantic.
    A Kunjin replicon vector encoding granulocyte macrophage colony-stimulating factor for intra-tumoral gene therapy
    Hoang-Le, D. ; Smeenk, L. ; Anraku, I. ; Pijlman, G.P. ; Wang, X.J. ; Vrij, J. de; Liu, W.J. ; Le, T.T. ; Schroder, W.A. ; Khromykh, A.A. ; Suhrbier, A. - \ 2009
    Gene Therapy 16 (2009). - ISSN 0969-7128 - p. 190 - 199.
    west-nile-virus - cd8 t-cells - human dendritic cells - amino-acid substitution - cytokine gene-therapy - gm-csf - ifn-alpha - in-vivo - cancer-immunotherapy - clonal expansion
    We have recently developed a non-cytopathic RNA replicon-based viral vector system based on the flavivirus Kunjin. Here, we illustrate the utility of the Kunjin replicon system for gene therapy. Intra-tumoral injections of Kunjin replicon virus-like particles encoding granulocyte colony-stimulating factor were able to cure >50% of established subcutaneous CT26 colon carcinoma and B16-OVA melanomas. Regression of CT26 tumours correlated with the induction of anti-cancer CD8 T cells, and treatment of subcutaneous CT26 tumours also resulted in the regression of CT26 lung metastases. Only a few immune-based strategies are able to cure these aggressive tumours once they are of a reasonable size, illustrating the potential of this vector system for intra-tumoral gene therapy applications.
    Cetaceans stranded in the Netherlands from 1998 to 2007
    Camphuysen, C.J. ; Smeenk, C. ; Addink, M. ; Grouw, H. van; Jansen, O.E. - \ 2008
    Lutra 51 (2008)2. - ISSN 0024-7634 - p. 87 - 122.
    cetacea - megaptera novaeangliae - dolfijnen - phocoena - balaenopteridae - megaptera - physeter - tursiops truncatus - lagenorhynchus - kustwateren - strandgronden - noordzee - cetacea - megaptera novaeangliae - dolphins - phocoena - balaenopteridae - megaptera - physeter - tursiops truncatus - lagenorhynchus - coastal water - beach soils - north sea
    Between 1998 and 2007, 2063 cetaceans were found stranded in the Netherlands, representing at least 14 species. Two species, humpback whale (Megaptera novaeangliae) and Blainville's beaked whale (Mesoplodon densirostris), are additions to the Dutch list. Apart from the first humpback whales, relatively many balaenopterid whales were found in comparison with previous decades. Range extension of recovering populations may explain part of this trend. However, the decline in strandings frequency in sperm whales (Physeter macrocephalus), another species with a slowly recovering Atlantic population but with a distinct peak in strandings in the 1990s, suggests that the factors underlying these changes are complex. During the 20th century, the strandings frequency of some dolphin species regularly occurring in the North Sea has changed markedly. Bottlenose dolphins (Tursiops truncatus) disappeared in the 1960s, common dolphins (Delphinus delphis) were fairly numerous during some decades in the mid-20th century, and white-beaked dolphins (Lagenorhynchus albirostris) became abundant and virtually replaced bottlenose dolphins in the strandings records since the 1970s. Numbers of stranded harbour porpoises (Phocoena phocoena) continued to increase over the years. All individual cases other than harbour porpoises are listed in this paper, reporting species, (late, locality, reporter, sex, total length (TL), collected remains, and remarks. A total of 1968 reports of stranded harbour porpoises were received, ranging from 59 in 1998 to 539 in 2006. It is estimated that along the North Sea coast at least 19% more porpoises were washed ashore than were actually recorded. On the Wadden Sea islands, this discrepancy is estimated as at least 30%. The mean length of porpoises declined gradually with time and the sex ratio was male-biased in all subregions. From measurements (TL) it is concluded that circa 72% were juveniles, with small proportions of adults (15.5%; unsexed and male male animals of TL > 150cm, female female animals of TL > 145 cm) and neonates or stillborns (12.4%; all porpoises of TL <90 can). The predominance of males is evident only in juveniles (62.8%), whereas the sex ratio in adults and neonates is not significantly skewed. 20.2% of the females and 12.1% of the males are large enough to tie regarded as sexually mature. The overall strandings pattern of the harbour porpoise is bimodal, with peaks in strandings in March-April and August. Presumed adults were proportionally numerous in winter (December-January) and in June, whereas about a quarter of all porpoises found in July, August and September were neonates or stillborn. At least ten porpoises were very large (TL estimated or measured > 170 cm) and a minimum of 14 females were either pregnant or had recently given birth. It should be noted, however, that only a small proportion of the porpoises was checked for reproductive status. Foetuses ranged in length Prom 22 cm (December 2006) to 75 cm (May 2004). Many porpoises were decomposed when found and these were buried or removed and destroyed. At least 38 cases were reported with evident external signs of by-catches, another 17 carcasses had been heavily mutilated with knives. A combination of histopathology and gross pathology of 255 harbour porpoises found in the period 1990-2000 and in 2006 and 2007 suggested that between 50 and 60% of the animals showed signs of definite or probable by-catch in fishing gear.Many of the stranded porpoises found had come into conflict with fisheries and had (lied, as several of the lrger (baleen) whales did. A dialogue with fisheries organisations is proposed to explore the issue further and to try and mitigate the problem.
    The cytoplasmic domain of tomato spotted witl virus Gn glycoprotein is required for Golgi localisation and interaction with Gc
    Snippe, M. ; Smeenk, L. ; Goldbach, R.W. ; Kormelink, R.J.M. - \ 2007
    Virology 363 (2007)2. - ISSN 0042-6822 - p. 272 - 279.
    intracellular-transport - hantaan virus - retention - g1 - signal - coexpression - trafficking - expression - complex - cells
    Envelopment of tomato spotted wilt virus nucleocapsids occurs at the Golgi stacks of infected cells. This is also the place where the two membrane glycoproteins Gn and Gc accumulate upon coexpression. The required Golgi retention signal has previously been demonstrated to reside within Gn. Using a series of truncated Gn proteins, the Golgi retention signal was mapped to a stretch of 10 amino acids on this protein's cytoplasmic tail, 20 residues downstream the transmembrane domain. Studies on the intracellular distribution of chimeric Gc proteins in which the cytoplasmic tail and/or transmembrane domain were exchanged by those from Gn, demonstrated the additional requirement of the Gn transmembrane domain for Golgi targeting. Truncated Gn constructs lacking the C-terminal 20 amino acids but still localising to the Golgi were no longer able to redirect Gc, suggesting the requirement of this domain for interaction with Gc.
    An equine herpesvirus 1 (EHV1) abortion storm at a riding school
    Maanen, C. van; Willink, D.L. ; Smeenk, L.A.J. ; Brinkhof, J. ; Terpstra, C. - \ 2000
    Veterinary Quarterly 22 (2000)2. - ISSN 0165-2176 - p. 83 - 87.
    An outbreak of EHV1 abortions occurred at a riding school in the Netherlands in 1991. Seven of twelve pregnant mares aborted, and another foal died at 8 days of age. Six abortions occurred within 12 days in March after an initial abortion on 8 February. Four mares delivered live foals. Virological examination of four aborted foals revealed an EHV1 infection. Serological results for paired sera from 17 horses suggested, that the initial abortion on 8 February was the index case, and probably caused the other six abortions. The index case could well have been caused by reactivation of latent virus induced by transport stress. The laboratory results are discussed in the light of the present knowledge of the pathogenesis and epidemiology of EHV1 abortion.
    Biotransformation of organics in soil columns and an infiltration area.
    Bosma, T.N.P. ; Ballemans, E.M.W. ; Hoekstra, N.K. ; Welscher, R.A.G. te; Smeenk, J.G.G.M. ; Schraa, G. ; Zehnder, A.J.B. - \ 1996
    Groundwater 34 (1996)1. - ISSN 0017-467X - p. 49 - 56.
    Organic micropollutants in the aquatic environment.
    Bosma, T.N.P. ; Welscher, R.A.G. ; Schraa, G. ; Smeenk, J.G.M.M. ; Zehnder, A.J.B. - \ 1991
    In: Proc. 6th Eur. Symp., Lisbon 1990: Organic micropollutants in the aquatic environment, G. Angeletti, A. Bjrseth (eds.). Kluwer Dordrecht - p. 184 - 192.
    Het gedrag van organische microverontreinigingen tijdens duininfiltratie.
    Bosma, T.N.P. ; Schraa, G. ; Smeenk, J.G.M.M. ; Welscher, R.A.G. te - \ 1990
    Unknown Publisher
    STRLIB: Fortran STRing LIBrary
    Smeenk, J.H. - \ 1980
    Wageningen : Dept. of Math., Agric. Univ.
    PREFOR - Prettig Fortran
    Smeenk, J.H. - \ 1980
    Nieuwsbrief Rekencentrum LHW 1 (1980)11.
    Fortran 77
    Smeenk, J.H. - \ 1980
    Nieuwsbrief Rekencentrum LHW 1 (1980)10.
    A synchronous Approach to Parallel Computer Tasking. Parallel Computers-Parallel Mathematics
    Elzas, M.S. ; Smeenk, J.H. - \ 1977
    In: Proc. of the IMACS (Aica)-GI, Symposium, 1977, technical University of Munich
    A simulation setup to evaluate a synchronous parallel system with sequential computing modules
    Elzas, M.S. ; Smeenk, J. - \ 1976
    In: Proceedings 8th AICA-congress (1976) 1051-1057, North Holland Publ. Co
    Een onderzoek naar de werking en het effect van de beeindigingsregeling 1 van het ontwikkelings - en saneringsfonds voor de landbouw
    Smeenk, W.F.H. - \ 1967
    's-Gravenhage : [s.n.] (Studies / Landbouw-economisch instituut no. 58) - 63
    ondersteunende maatregelen - economie - regering - landbouw - nederland - support measures - economics - government - agriculture - netherlands
    De landarbeidersvrouwen in de zeekleigebieden
    Smeenk, W.F.H. - \ 1967
    Den Haag : [s.n.] (Studies / Landbouw-economisch instituut no. 47) - 67
    landarbeiders - arbeid (werk) - arbeidseconomie - werkgelegenheid - werk - werkorganisatie - arbeidskunde - economische sociologie - arbeidssociologie - Nederland - werkers - vrouwen - landbouw - industriële sociologie - farm workers - labour - labour economics - employment - work - organization of work - work study - economic sociology - sociology of work - Netherlands - workers - women - agriculture - industrial sociology
    De landarbeiders in de zeekleigebieden : aspecten van het landarbeidersberoep
    Baris, D.B. ; Smeenk, W.F.H. - \ 1966
    's-Gravenhage : Landbouw-Economisch Instituut (Studies / Landbouw-Economisch Instituut no. 45) - 113
    landarbeiders - arbeid (werk) - arbeidseconomie - werkgelegenheid - werk - werkorganisatie - arbeidskunde - Nederland - landbouw - farm workers - labour - labour economics - employment - work - organization of work - work study - Netherlands - agriculture
    De landarbeiders in de zeekleigebieden : onderwijs en beroepskeuze
    Jacobs, A.J. ; Smeenk, W.F.H. - \ 1966
    's-Gravenhage : L.E.I. (Studies / Landbouw-Economisch Instituut no. 38) - 47
    beroepskeuze - beroepen - sociaal milieu - landarbeiders - nederland - sociografie - sociale situatie - career choice - occupations - social environment - farm workers - netherlands - sociography - social situation
    Vormen van intensieve samenwerking tussen individuele landbouwbedrijven
    Smeenk, W.F.H. ; Bauwens, A.L.G.M. - \ 1966
    's-Gravenhage : L.E.I. (Studies / Landbouw-Economisch Instituut no. 39) - 93
    agrarische bedrijfsvoering - ondernemingen - bedrijven - samenwerking - nederland - farm management - enterprises - businesses - cooperation - netherlands
    De landarbeiders in de weidegebieden
    Smeenk, W.F.H. ; Post, J.H. ; Perdok, B.H. - \ 1965
    's-Gravenhage : L.E.I. (Studies / Landbouw-Economisch Instituut no. 18) - 181
    landarbeiders - landbouwbedrijven - bedrijfssystemen - nederland - graslanden - zoötechniek - personeel - sociale klassen - arbeidersklassen - werkers - farm workers - farms - farming systems - netherlands - grasslands - zootechny - personnel - social classes - working classes - workers
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