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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When product attitudes go to waste : Wasting products with remaining utility decreases consumers' product attitudes
Herpen, Erica van; Hooge, Ilona E. de - \ 2019
Journal of Cleaner Production 210 (2019). - ISSN 0959-6526 - p. 410 - 418.
Attitude - Cognitive dissonance - Discomfort - Waste

Consumers regularly waste products with unused utility (e.g., edible food, functioning appliances), but also have an aversion to such wastefulness. The present paper demonstrates that this wasting conflict has relevant managerial implications. Drawing upon cognitive dissonance theory, the authors predict and reveal in three experiments that brand attitudes for everyday mundane products can suffer when the unused utility of such products is wasted. Two scenario studies show that wasting a product with unused utility leads to feelings of discomfort (Experiment 1), and to lower product attitudes (Experiment 2). A final study (Experiment 3) replicates the effect on brand attitudes in an actual consumption situation. Moreover, it shows that brand visibility is a moderator in this process: wasting tends to lead to lower brand attitudes when the brand is visible at the moment of wasting, but not when the brand is not visible. Collectively, these experiments provide novel insights into how and when the generation of waste can have detrimental effects on brand attitudes, demonstrating the importance of consumer waste acts for industry.

The Glycaemic Index-Food-Frequency Questionnaire: Development and Validation of a Food Frequency Questionnaire Designed to Estimate the Dietary Intake of Glycaemic Index and Glycaemic Load : An Effort by the PREVIEW Consortium
Brouwer, E.M. ; Berendsen, A.M. ; Sluik, D. ; Wiel, A.M. van de; Raben, Anne ; Vries, J.H.M. de; Brand-Miller, Jennie ; Feskens, E.J.M. - \ 2019
Nutrients 11 (2019)1. - ISSN 2072-6643
Dietary glycaemic index (GI) and glycaemic load (GL) are indices used to quantify the effect of carbohydrate quality and quantity on postprandial glycaemia. GI/GL-health associations are widely studied but data on the validity of integrated GI/GL measurements are scarce. We evaluated the performance of a food-frequency questionnaire (FFQ) specifically developed to assess GI/GL. In total, 263 Dutch men and 212 women (aged 55 ± 11 years) completed a 58-item GI-FFQ, an 183-item general-FFQ and a 2-day 24 h-recall and donated blood for glycated haemoglobin (HbA1c) determination. The level of agreement between these methods was evaluated by (1) cross-classification, (2) correlations and (3) Bland and Altman plots. The three dietary assessment methods provided comparable mean intake estimates for total carbohydrates (range: 214–237 g/day), mono/disaccharides (100–107 g/day), polysaccharides (114–132 g/day), as well as bread, breakfast cereals, potatoes, pasta, rice, fruit, dairy, cakes/cookies and sweets. Mean (±SD) GI estimates were also comparable between the GI-FFQ (54 ± 3), general-FFQ (53 ± 4) and 24 h-recalls (53 ± 5). Mean (±SD) GI-FFQ GL (117 ± 37) was slightly lower than the general-FFQ GL (126 ± 38) and 24 h-recalls GL (127 ± 37). Classification of GI in quartiles was identical for the GI-FFQ and general-FFQ for 43% of the population (r = 0.58) and with 24 h-recalls for 35% of the population (de-attenuated r = 0.64). For GL, this was 48% (r = 0.65) and 44% (de-attenuated r = 0.74). Correlations between GI and HbA1c were low (r = −0.09 for GI-FFQ, r = −0.04 for general-FFQ and r = 0.07 for 24 h-recalls). In conclusion, compared to a general-FFQ and 24 h-recalls, the GI-FFQ showed a moderate to good relative validity for carbohydrates, carbohydrate-rich foods and GI/GL. No metric predicted HbA1c.
PREVIEW study—Influence of a behavior modification intervention (PREMIT) in over 2300 people with pre-diabetes : Intention, self-efficacy and outcome expectancies during the early phase of a lifestyle intervention
Huttunen-Lenz, Maija ; Hansen, Sylvia ; Christensen, Pia ; Larsen, Thomas Meinert ; Sandø-Pedersen, Finn ; Drummen, Mathijs ; Adam, Tanja C. ; Macdonald, Ian A. ; Taylor, Moira A. ; Martinez, J.A. ; Navas-Carretero, Santiago ; Handjiev, Svetoslav ; Poppitt, Sally D. ; Silvestre, Marta P. ; Fogelholm, Mikael ; Pietiläinen, Kirsi H. ; Brand-Miller, Jennie ; Berendsen, Agnes A.M. ; Raben, Anne ; Schlicht, Wolfgang - \ 2018
Psychology Research and Behavior Management 11 (2018). - p. 383 - 394.
Cognition - Diabetes mellitus - Goals - Habits - Weight loss

Purpose: Onset of type 2 diabetes (T2D) is often gradual and preceded by impaired glucose homeostasis. Lifestyle interventions including weight loss and physical activity may reduce the risk of developing T2D, but adherence to a lifestyle change is challenging. As part of an international T2D prevention trial (PREVIEW), a behavior change intervention supported participants in achieving a healthier diet and physically active lifestyle. Here, our aim was to explore the influence of this behavioral program (PREMIT) on social-cognitive variables during an 8-week weight loss phase. Methods: PREVIEW consisted of an initial weight loss, Phase I, followed by a weight-maintenance, Phase II, for those achieving the 8-week weight loss target of ≥ 8% from initial bodyweight. Overweight and obese (BMI ≥25 kg/m2) individuals aged 25 to 70 years with confirmed pre-diabetes were enrolled. Uni-and multivariate statistical methods were deployed to explore differences in intentions, self-efficacy, and outcome expectancies between those who achieved the target weight loss (“achievers”) and those who did not (“non-achievers”). Results: At the beginning of Phase I, no significant differences in intentions, self-efficacy and outcome expectancies between “achievers” (1,857) and “non-achievers” (163) were found. “Non-achievers” tended to be younger, live with child/ren, and attended the PREMIT sessions less frequently. At the end of Phase I, “achievers” reported higher intentions (healthy eating χ2 (1)=2.57; P <0.008, exercising χ2 (1)=0.66; P <0.008), self-efficacy (F(2; 1970)=10.27, P <0.005), and were more positive about the expected outcomes (F(4; 1968)=11.22, P <0.005). Conclusion: Although statistically significant, effect sizes observed between the two groups were small. Behavior change, however, is multi-determined. Over a period of time, even small differences may make a cumulative effect. Being successful in behavior change requires that the “new” behavior is implemented time after time until it becomes a habit. Therefore, having even slightly higher self-efficacy, positive outcome expectancies and intentions may over time result in considerably improved chances to achieve long-term lifestyle changes.

Effect of warming profile at the onset of incubation on early embryonic mortality in long stored broiler eggs
Roovert-Reijrink, I.A.M. van; Pol, C.W. van der; Molenaar, R. ; Brand, H. van den - \ 2018
Poultry Science 97 (2018)11. - ISSN 0032-5791 - p. 4083 - 4092.

In 6 experiments, it was investigated whether the pattern of warming from storage temperature to incubation temperature affects early embryonic mortality in broiler eggs. The warming profile (WP) from 21°C to the final incubation temperature of 37.8°C was divided into 2 equal parts (above and below 29.4°C) and the duration of warming in both parts was varied (3 to 17 h). In all experiments, eggs were stored for 13 to 16 d at a storage temperature of 18±2°C. In experiment 1, embryo morphology was evaluated at several time points during a linear warming curve of 24 h from 21°C to an eggshell temperature (EST) of 37.8°C. Results from experiment 1 showed that during the 24 h of warming, embryos did not advance in morphological stage (P = 0.74).Results of experiment 2 and 3 showed that the duration of the WP below 29.4°C (3 to 17 h) had no effect on early embryonic mortality (P ≥ 0.77). Experiment 4 and 6 showed that in eggs from prime breeders, a slow WP (>12 h) above 29.4°C resulted in lower embryonic mortality during the first 2 d of incubation (on average 5.0%) compared to a fast WP of 3 to 6 h (on average 11.3%). In experiment 6, an interaction was found between WP and breeder flock age for embryonic mortality till day 7 of incubation (P = 0.002). Warming profile did not affect embryonic mortality during the first 7 d of incubation in eggs from the young breeder flock. However, in eggs from the prime breeder flock, a WP of 12 h in the first part of warming, followed by 17 h in the second part of warming (WP12-17) had 6.2% lower embryonic mortality in the first 7 d of incubation compared to WP12-3. It can be concluded that a slower WP above 29.4°C reduces early embryonic mortality in long stored eggs, especially those of prime breeder flocks. At this moment, it remains unclear which mechanisms are involved in this phenomenon.

Higher Mediterranean Diet scores are not cross-sectionally associated with better cognitive scores in 20- to 70-year-old Dutch adults: The NQplus study
Brouwer, E.M. ; Benati, Anita ; Wiel, A.M. van de; Lee, L. van; Vries, J.H.M. de; Feskens, E.J.M. ; Rest, O. van de - \ 2018
Nutrition Research 59 (2018). - ISSN 0271-5317 - p. 80 - 89.
Adherence to the Mediterranean Diet (MedDiet) has been suggested to reduce
the risk of age-related cognitive decline. Therefore, we hypothesized that
adults consuming a more Mediterranean-like diet were more likely to have
better cognitive scores. We investigated cross-sectional associations between
MedDiet adherence and cognitive performance using data of 1607 Dutch men
and women aged 20–70 years. Dietary intake was assessed using a 183-item
Food Frequency Questionnaire. MedDiet adherence was defined by a 0–9 point
scale; which was based on intakes of vegetables, legumes, fruits/nuts, cereals,
fish/seafood, meat/poultry, dairy, ethanol and the MUFA:SFA ratio. Cognitive
function was assessed with a neuropsychological test battery. Linear regression
analyses adjusted for relevant covariates showed a significant inverse association
between MedDiet adherence and everyday memory: specifically β = −0.107
± 0.046 points (P = .02) for the total population and β = −0.139 ± 0.055 points
(P = .01) for those aged ≥50 years. Further exploration of the individual MedDiet
food groups suggested that the association between MedDiet and everyday
memory was predominantly driven by the MUFA:SFA ratio. Moreover, associations were observed between higher ethanol intake better semantic memory and language production (β = 0.016 ± 0.008 P = .05), higher
vegetable intake with better processing speed (β = 0.005 ± 0.002, P = .02), and
higher legumes intake with poorer processing speed (β = −0.014 ±0.006, P = 03). Thus, in this Dutch cohort, higher MedDiet adherence was associated with poorer everyday memory.
Comparison of performance, health and welfare aspects between commercially housed hatchery-hatched and on-farm hatched broiler flocks
Jong, I.C. de; Gunnink, H. ; Hattum, T. van; Riel, J.W. van; Raaijmakers, M.M.P. ; Zoet, E.S. ; Brand, H. van den - \ 2018
Animal (2018). - ISSN 1751-7311 - 9 p.
broiler - early feeding - on-farm hatching - performance - welfare

On-farm hatching systems for broiler chicks are increasingly used in practice. We studied whether or not performance, health and welfare aspects differed between commercial flocks hatched on-farm or in a hatchery (control). In two successive production cycles on seven farms, a total of 16 on-farm hatched flocks were paired to 16 control flocks, housed at the same farm. Paired flocks originated from the same batch of eggs and were subjected to similar on-farm management. On-farm hatched and control flocks only differed with respect to hatching conditions, with on-farm hatched flocks not being exposed to, for example, chick handling, post-hatch feed and water deprivation and transport, in contrast to control flocks that were subjected to standard hatchery procedures, subsequently transported and placed in the poultry house. Day-old chick quality (navel and hock scores), 1st week mortality, total mortality, BW at day (d) 0, d7 and at depopulation, and (total) feed conversion ratio were determined. Prevalence of footpad dermatitis, hock burn, breast discoloration/blisters and cleanliness, litter quality and gait score were determined at d21 of age and around depopulation (d39 on average). Gross pathology and gut morphology were examined at depopulation age in a sample of birds of five flocks per treatment. On-farm hatching resulted in a higher BW at d0 (=5.4 g) and d7 (=11.5 g) (P<0.001), but day-old chick quality as measured by navel (P=0.003) and hock (P=0.01) quality was worse for on-farm hatched compared to control birds. Body weight, 1st week and total mortality, and feed conversion ratio at slaughter age were similar for both on-farm hatched and control flocks. On-farm hatched flocks had less footpad dermatitis (P=0.05), which indicated a better welfare. This was likely related to a tendency for better litter quality in on-farm hatched flocks at 21 days of age in comparison to control flocks (P=0.08). No major differences in gross pathology or in intestinal morphology at depopulation age were found between treatments. In conclusion, on-farm hatching resulted in better 1st week broiler performance and better welfare compared to conventional hatching in a hatchery.

Values and value conflicts in snack providing of Dutch, Polish, Indonesian and Italian mothers
Damen, Femke W.M. ; Hofstede, Gert Jan ; Steenbekkers, Bea L.P.A. ; Vitaglione, Paola ; Pellegrini, Nicoletta ; Fogliano, Vincenzo ; Luning, Pieternel A. - \ 2018
Food Research International (2018). - ISSN 0963-9969 - 8 p.
Child - Childhood obesity - Children's dietary behavior - Cross-cultural differences - Culture - Food choice - Mother - National culture

This study investigates which values play a role in the decision of mothers about snacks to offer to their young children with a focus on the value conflicts that might occur. The study explores whether national culture is reflected in mothers' values in snack choice for their young children and the related value conflicts. Semi-structured interviews with 67 mothers of 2–7 years old children divided over 4 national cultures (Dutch, Polish, Indonesian and Italian) were conducted. Questions were asked about their values and value conflicts when providing a snack to their young children. Four key themes could be distinguished to cluster the mentioned values. The health-related key theme includes all values that are associated with the healthiness of the product, the child-related key theme all values that connects to the child, the time-related key theme includes the value convenience and the product-related key theme includes all values that are associated with the product itself. Dutch and Polish mothers mostly valued health of the snack, whereas Indonesian and Italian mothers mostly valued the preference of their child. Data also shows specific prevalence between values and nationalities: convenience was very important for Dutch mothers, valuing organic food was typical for Polish mothers, religion played a role for Indonesian mothers, while Italian mothers placed more value on brand compared to the mothers of other cultures. In all cultures, the value conflicts mentioned were mainly related to health.

Cultivating change: How a Dutch university is working on a new agricultural revolution – to feed the world
Ende, Ernst van den; Marcelis, Leo ; Kema, Gert ; Zedde, Rick van de; Goot, Atze Jan van der - \ 2018
Demographic and Social-Cognitive Factors Associated with Weight Loss in Overweight, Pre-diabetic Participants of the PREVIEW Study
Hansen, Sylvia ; Huttunen-Lenz, Maija ; Sluik, Diewertje ; Brand-Miller, Jennie ; Drummen, Mathijs ; Fogelholm, Mikael ; Handjieva-Darlenska, Teodora ; Macdonald, Ian ; Martinez, Alfredo J. ; Larsen, Thomas Meinert ; Poppitt, Sally ; Raben, Anne ; Schlicht, Wolfgang - \ 2018
International Journal of Behavioral Medicine 25 (2018)6. - ISSN 1070-5503 - p. 682 - 692.
Behavioral determination - Lifestyle intervention - Social-cognitive factors - Weight loss

Purpose: Weight loss has been demonstrated to be a successful strategy in diabetes prevention. Although weight loss is greatly influenced by dietary behaviors, social-cognitive factors play an important role in behavioral determination. This study aimed to identify demographic and social-cognitive factors (intention, self-efficacy, outcome expectancies, social support, and motivation with regard to dietary behavior and goal adjustment) associated with weight loss in overweight and obese participants from the PREVIEW study who had pre-diabetes. Method: Prospective correlational data from 1973 adult participants were analyzed. The participants completed psychological questionnaires that assessed social-cognitive variables with regard to dietary behavior. Stepwise multiple regression analyses were performed to identify baseline demographic and social-cognitive factors associated with weight loss. Results: Overall, being male, having a higher baseline BMI, having a higher income, perceiving fewer disadvantages of a healthy diet (outcome expectancies), experiencing less discouragement for healthy eating by family and friends (social support), and lower education were independently linked to greater weight loss. When evaluating females and males separately, education was no longer associated with weight loss. Conclusion: The results indicate that a supportive environment in which family members and friends avoid discouraging healthy eating, with the application of a strategy that uses specific behavior change techniques to emphasize the benefits of outcomes, i.e., the benefits of a healthy diet, may support weight loss efforts. Weight loss programs should therefore always address the social environment of persons who try to lose body weight because family members and friends can be important supporters in reaching a weight loss goal.

Beached bachelors: An extensive study on the largest recorded sperm whale Physeter macrocephalus mortality event in the North Sea
IJsseldijk, Lonneke L. ; Neer, Abbo van; Deaville, Rob ; Begeman, Lineke ; Bildt, Marco van de; Brand, Judith M.A. van den; Brownlow, Andrew ; Czeck, Richard ; Dabin, Willy ; Doeschate, Mariel ten; Herder, Vanessa ; Herr, Helena ; IJzer, Jooske ; Jauniaux, Thierry ; Jensen, Lasse Fast ; Jepson, Paul D. ; Jo, Wendy Karen ; Lakemeyer, Jan ; Lehnert, Kristina ; Leopold, Mardik F. ; Osterhaus, Albert ; Perkins, Matthew W. ; Piatkowski, Uwe ; Prenger-Berninghoff, Ellen ; Pund, Ralf ; Wohlsein, Peter ; Gröne, Andrea ; Siebert, Ursula - \ 2018
PLoS One 13 (2018)8. - ISSN 1932-6203

Between the 8th January and the 25th February 2016, the largest sperm whale Physeter macrocephalus mortality event ever recorded in the North Sea occurred with 30 sperm whales stranding in five countries within six weeks. All sperm whales were immature males. Groups were stratified by size, with the smaller animals stranding in the Netherlands, and the largest in England. The majority (n = 27) of the stranded animals were necropsied and/ or sampled, allowing for an international and comprehensive investigation into this mortality event. The animals were in fair to good nutritional condition and, aside from the pathologies caused by stranding, did not exhibit significant evidence of disease or trauma. Infectious agents were found, including various parasite species, several bacterial and fungal pathogens and a novel alphaherpesvirus. In nine of the sperm whales a variety of marine litter was found. However, none of these findings were considered to have been the primary cause of the stranding event. Potential anthropogenic and environmental factors that may have caused the sperm whales to enter the North Sea were assessed. Once sperm whales enter the North Sea and head south, the water becomes progressively shallower (<40 m), making this region a global hotspot for sperm whale strandings. We conclude that the reasons for sperm whales to enter the southern North Sea are the result of complex interactions of extrinsic environmental factors. As such, these large mortality events seldom have a single ultimate cause and it is only through multidisciplinary, collaborative approaches that potentially multifactorial large-scale stranding events can be effectively investigated.

Evaluating potential biomarkers of health and performance in veal calves
Marcato, Francesca ; Brand, Henry van den; Kemp, Bas ; Reenen, Kees van - \ 2018
Frontiers in Veterinary Science 5 (2018)JUN. - ISSN 2297-1769
Biomarkers - Challenges - Diseases - Health - Stress - Veal calves

Veal calves undergo many challenges in the early stages of their life. Such challenges, including mixing procedures and transportation of calves to the veal farm, may have a negative influence on growth rate, feed intake, metabolism, immunity and disease susceptibility of calves. As a consequence, many hematological, physiological, metabolic and immunological parameters of stressed calves might be altered on arrival at the veal farm. Some of these response variables might be useful as biomarkers of performance of calves at the veal farm as they might provide information about an ongoing disease process, or may predict future diseases. Biomarkers might be helpful to group and manage calves in different risk categories after arrival. By adopting treatment decisions and protocols on a risk-group or individual basis, it would be possible to improve animal health and reduce both disease incidence and antibiotic use. Moreover, the use of biomarkers might be an economically feasible approach as some of them do not need invasive techniques and others can be measured in blood already taken during routine checks. Previous literature mainly assessed the physiological responses of calves to transportation. However, information on the link between on-farm arrival data and future health and performance of veal calves is limited. This review, therefore, examined a wide range of papers and aimed to identify potential biomarkers of future health and performance.

Site-specific aftercare completion criteria for sustainable landfilling in the Netherlands : Geochemical modelling and sensitivity analysis
Dijkstra, Joris J. ; Zomeren, André van; Brand, Ellen ; Comans, Rob N.J. - \ 2018
Waste Management 75 (2018). - ISSN 0956-053X - p. 407 - 414.
Aftercare completion - Environmental protection criteria - Geochemical modelling - Risk assessment - Sensitivity analysis - Sustainable landfill management
A novel, regulatory accepted approach is developed that enables competent authorities to decide whether landfill aftercare can be reduced or terminated. Our previous paper (Brand et al., Waste Management 2016, 56, 255–261, https://doi.org//10.1016/j.wasman.2016.07.038) outlines the general approach, that consists of a 10-year treatment phase (e.g., aeration, leachate recirculation), in combination with site-specific Environmental Protection Criteria (EPC) for contaminant concentrations in the landfill leachate after treatment. The current paper presents the unique modelling approach by which the site-specific EPC are derived. The modelling approach is based on the use of mechanistic multi-surface geochemical models covering the main sorption processes in soils underneath the landfills, and is composed of widely-accepted surface complexation models in combination with published “generic” parameter sets. This approach enables the consideration of the main site-specific soil properties that influence the attenuation of emitted contaminants. In addition, the sensitivity of the EPC is shown for variation of the main physicochemical-assumptions and policy-based decisions. Site-specific soil properties have been found to substantially determine the EPC and include soil-pH, dissolved organic matter, and iron-(hydr)oxide content. Apart from the sorption capacity of the local soil, EPC also depend strongly on the assumed dilution with local groundwater in the saturated zone. An important policy-related decision that influences the calculated EPC is the assessment period during which the groundwater is protected. The transparent setup of the approach using geochemical modelling, the explicit consideration of site-specific properties and the achieved regulatory acceptance may also stimulate application to landfills in other countries.
Vuur in het heidelandschap, branden als beheermethode
Castrop, E. ; Roomer, R. ; Hoftijzer, M. ; Stoof, C.R. - \ 2018
Wageningen : Nature Today
Recent werd in Breda een stuk heide van 50 bij 40 meter afgebrand met als doel natuurbeheer, het doel was hier om de heide te verjongen. Dit klinkt gevaarlijk, maar deze gecontroleerde branden zijn niet te vergelijken met ongecontroleerde natuurbranden. Bij een beheerbrand wordt rekening gehouden met het weer voorafgaand aan de brand en het gebeurt alleen onder optimale omstandigheden.
Groei en productie van Corsicaanse den in Nederland
Jansen, J.J. ; Oosterbaan, A. ; Mohren, G.M.J. ; Ouden, J. den - \ 2018
Wageningen : Wageningen University & Research (FEM Groei en Productie rapport 2018-6) - 109
In the Netherlands, growth and yield research on Corsican pine was done from 1925 to 1990. This includes studies by Becking and by the Dorschkamp/IBN research institute. Together with the permanent sample plots from the timber prognosis system HOSP, all this comprises a dataset of 193 plots with 869 recordings. For the development of top height htop over age (t), Jansen & Hilde-brand’s model with asymptote and 3 additional parameters fitted best. As site index, top height at 50 year (h50) was chosen. The diameter development up to stand height of 7 m was best described with a Gompertz function based on htop, the density after refinements (NR), and h50. From a stand height of 7 m and up, the basal area increment (iG) was best described by a power function based on htop, t, and the stand density index of Hart (S %). For S % > 22.4 the basal area increment drops with increas-ing S %. The year of recording in relation with Brunchorstia dieback was also included in the model. The effect of thinning on diameter after thinning was modelled with a modified La Bastide-Faber model. With all models together, a stand projection model was constructed, which follows the meas-ured stand development reasonably well. The model was used to construct yield tables with seven site classes and six thinning intensities.
Objectively measured physical activity and sedentary time are associated with cardiometabolic risk factors in adults with prediabetes : The PREVIEW study
Swindell, Nils ; Mackintosh, Kelly ; Mcnarry, Melitta ; Stephens, Jeffrey W. ; Sluik, Diewertje ; Fogelholm, Mikael ; Drummen, Mathijs ; Macdonald, Ian ; Martinez, J.A. ; Handjieva-Darlenska, Teodora ; Poppitt, Sally D. ; Brand-Miller, Jennie ; Larsen, Thomas M. ; Raben, Anne ; Stratton, Gareth - \ 2018
Diabetes Care 41 (2018)3. - ISSN 0149-5992 - p. 562 - 569.
OBJECTIVE The aim of the present cross-sectional study was to examine the association among physical activity (PA), sedentary time (ST), and cardiometabolic risk in adults with prediabetes. RESEARCH DESIGN AND METHODS Participants (n = 2,326; 25-70 years old, 67% female) from eight countries, with a BMI >25 kg · m22 and impaired fasting glucose (5.6-6.9 mmol · L21) or impaired glucose tolerance (7.8-11.0 mmol · L21 at 2 h), participated. Seven-day accelerometry objectively assessed PA levels and ST. RESULTS Multiple linear regression revealed that moderate-To-vigorous PA (MVPA) was negatively associated withHOMAof insulin resistance (HOMA-IR) (standardizedb =20.078 [95% CI20.128,20.027]), waist circumference (WC) (b =20.177 [20.122,20.134]), fasting insulin (b = 20.115 [20.158, 20.072]), 2-h glucose (b = 20.069 [20.112, 20.025]), triglycerides (b = 20.091 [20.138, 20.044]), and CRP (b = 20.086 [20.127, 20.045]). ST was positively associated with HOMA-IR (b = 0.175 [0.114, 0.236]), WC (b = 0.215 [0.026, 0.131]), fasting insulin (b = 0.155 [0.092, 0.219]), triglycerides (b = 0.106 [0.052, 0.16]), CRP (b = 0.106 [0.39, 0.172]), systolic blood pressure (BP) (b = 0.078 [0.026, 0.131]), and diastolic BP (b = 0.106 [0.39, 20.172]). Associations reported between total PA (counts · min21), and all risk factors were comparable or stronger than for MVPA: HOMA-IR (b = 20.151 [20.194, 20.107]), WC (b = 20.179 [20.224, 20.134]), fasting insulin (b = 20.139 [20.183, 20.096]), 2-h glucose (b = 20.088 [20.131, 20.045]), triglycerides (b = 20.117 [20.162, 20.071]), and CRP (b = 20.104 [20.146, 20.062]). CONCLUSIONS In adults with prediabetes, objectively measured PA and ST were associated with cardiometabolic risk markers. Total PA was at least as strongly associated with cardiometabolic risk markers as MVPA, which may imply that the accumulation of total PA over the day is as important as achieving the intensity of MVPA.
Models, More Models, and Then a Lot More
Babur, O. ; Cleophas, L. ; Brand, M. van den; Tekinerdogan, B. ; Aksit, M. - \ 2018
In: Software Technologies: Applications and Foundations. - Cham : Springer International Publishing (Lecture notes in computer science ) - ISBN 9783319747293 - p. 129 - 135.
With increased adoption of Model-Driven Engineering, the number of related artefacts in use, such as models, metamodels and transformations, greatly increases. To confirm this, we present quantitative evidence from both academia — in terms of repositories and datasets — and industry — in terms of large domain-specific language ecosystems. To be able to tackle this dimension of scalability in MDE, we propose to treat the artefacts as data, and apply various techniques — ranging from information retrieval to machine learning — to analyse and manage those artefacts in a holistic, scalable and efficient way.
Making cocoa origin traceable : Fingerprints of chocolates using Flow Infusion - Electro Spray Ionization - Mass Spectrometry
Acierno, Valentina ; Alewijn, Martin ; Zomer, Paul ; Ruth, Saskia M. van - \ 2018
Food Control 85 (2018). - ISSN 0956-7135 - p. 245 - 252.
Chocolate - FI-ESI-MS - Fingerprint - Origin - Traceability
More and more attention is paid to sustainability in the cocoa production. Tools that assist in making sustainable cocoa traceable are therefore welcome. In the present study, the applicability of Flow Infusion-Electrospray Ionization- Mass Spectrometry (FI-ESI-MS) to assess the geographical origin of cocoa beans used to produce chocolate has been tested. Fifty-seven dark chocolates available on the Dutch market were investigated taking into account the geographical origin of the beans: they originated from Africa (15), Asia (11) and South America (31). The FI-ESI-MS generated non-volatile profiles, were subjected to ANOVA selection (21 masses per sample). Those were subsequently used as fingerprints and investigated using chemometric tools to elucidate information on raw material origin. Principal component analysis revealed a remarkable separation between African and Asian bean chocolates. No clear trend was observed for the chocolates manufactured from South American beans. The kNN results confirmed the possibility to separate African and Asian chocolates as well as these two continents together versus the South America. The inability to separate the three continents at the same time and the weak differentiation of South American samples from the others is linked to brand-related factors, such as the formulation and industrial processing. Although diminishing of the influence of the brand-related factors will improve separation, the current approach is an important step in the geographical assessment of the raw material and the traceability of cocoa in its supply chain.
Local amplification of highly pathogenic avian influenza H5N8 viruses in wild birds in the Netherlands, 2016 to 2017
Poen, Marjolein J. ; Bestebroer, Theo M. ; Vuong, Oanh ; Scheuer, Rachel D. ; Jeugd, Henk P. van der; Kleyheeg, Erik ; Eggink, Dirk ; Lexmond, Pascal ; Brand, Judith M.A. van den; Begeman, Lineke ; Vliet, Stefan van der; Müskens, Gerhard J.D.M. ; Majoor, Frank A. ; Koopmans, Marion P.G. ; Kuiken, Thijs ; Fouchier, Ron A.M. - \ 2018
EuroSurveillance 23 (2018)4. - ISSN 1025-496X
Introduction: Highly pathogenic avian influenza (HPAI) viruses of subtype H5N8 were re-introduced into the Netherlands by late 2016, after detections in southeast Asia and Russia. This second H5N8 wave resulted in a large number of outbreaks in poultry farms and the deaths of large numbers of wild birds in multiple European countries. Methods: Here we report on the detection of HPAI H5N8 virus in 57 wild birds of 12 species sampled during active (32/5,167) and passive (25/36) surveillance activities, i.e. in healthy and dead animals respectively, in the Netherlands between 8 November 2016 and 31 March 2017. Moreover, we further investigate the experimental approach of wild bird serology as a contributing tool in HPAI outbreak investigations. Results: In contrast to the first H5N8 wave, local virus amplification with associated wild bird mortality has occurred in the Netherlands in 2016/17, with evidence for occasional gene exchange with low pathogenic avian influenza (LPAI) viruses. Discussion: These apparent differences between outbreaks and the continuing detections of HPAI viruses in Europe are a cause of concern. With the current circulation of zoonotic HPAI and LPAI virus strains in Asia, increased understanding of the drivers responsible for the global spread of Asian poultry viruses via wild birds is needed.
Effects of dietary supplementation of organic minerals, fish oil and hydrolysed collagen on growth performance and tibia characteristics of broiler chickens
Guz, Bahadir ; Molenaar, R. ; Krimpen, M.M. van; Brand, H. van den; Jong, I.C. de; Kemp, B. - \ 2018
In: Abstract of the WIAS Science Day 2018. - - p. 27 - 27.
The sustainable seafood movement is a Governance concert, with the audience playing a key role
Barclay, Kate ; Miller, Alice - \ 2018
Sustainability 10 (2018)1. - ISSN 2071-1050
Corporate social responsibility - Ecolabels - Ethical consumption - Green marketing - Supply chain management - Sustainable seafood
Private standards, including ecolabels, have been posed as a governance solution for the global fisheries crisis. The conventional logic is that ecolabels meet consumer demand for certified "sustainable" seafood, with "good" players rewarded with price premiums or market share and "bad" players punished by reduced sales. Empirically, however, in the markets where ecolabeling has taken hold, retailers and brands-rather than consumers-are demanding sustainable sourcing, to build and protect their reputation. The aim of this paper is to devise a more accurate logic for understanding the sustainable seafood movement, using a qualitative literature review and reflection on our previous research. We find that replacing the consumer-driven logic with a retailer/brand-driven logic does not go far enough in making research into the sustainable seafood movement more useful. Governance is a "concert" and cannot be adequately explained through individual actor groups. We propose a new logic going beyond consumer- or retailer/brand-driven models, and call on researchers to build on the partial pictures given by studies on prices and willingness-to-pay, investigating more fully the motivations of actors in the sustainable seafood movement, and considering audience beyond the direct consumption of the product in question.
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