217 research outputs found
Role of product characteristics for the adoption of fruit and fruit product innovations
The aim of this study was the identification of those product characteristics that are important for the adoption of fruit and fruit product innovations by consumers. Sixteen focus group discussions were held in four European countries (Greece, The Netherlands, Poland, and Spain). Different aspects of six innovative fruit products were discussed, revealing those characteristics that were important for the adoption of each of them. It was observed that the participants did not perceive fruit innovations as a homogenous group, but assigned them to different groups, which led to a number of categories of fruit innovation. Three categories concerned the level of preparation of fruit. These were fresh, prepared, and processed fruit product innovations. Another two categories, radical and evolutionary innovations, related to the level of novelty of the fruit innovation. Characteristics important for the adoption of each of these categories are given.The results will be used for further, more quantitative, research
Consumers' Perception of Milk Safety
Several times during the last decade consumers have been warned about different incidents concerning food safety, like, salmonella in eggs, cheese and poultry, and pesticides residues in tomatoes. The problem of food safety is still to be a largely latent concern for consumers. The main research goal of this paper is to investigate consumers' risk attitudes and risk perceptions concerning milk safety and to estimate their willingness to pay for extra-safe milk. The data was collected in the Netherlands using a mail survey. 211 usable questionnaires (26%) were returned. Results show that, in general, consumers are not concerned about the safety of milk. However, the results of consumers' perceptions of the "riskiness of milk contamination" for vulnerable groups of people show that babies are considered to be more sensitive to different sources of contamination than other groups. This study supports the results of previous food safety studies showed that consumers are willing to pay a price premium to the traditional purchase price to avoid some perceived risks. 58% of respondents are willing to pay an additional price for extra-safe milk. The conjoint experiment results indicate that the most important factors for consumers' preference are risk of contamination and presence of a label. Based on a conjoint analysis four segments of respondents were distinguished: "Balanced Shoppers"; "Safety-Seekers"; "Safety-Indifferent"; and "Extreme-Safety Seekers".food safety, questionnaire survey, risk attitudes, risk perceptions, willingness to pay, willingness to buy., Food Consumption/Nutrition/Food Safety,
Impact of the European Clinical Trials Directive on prospective academic clinical trials associated with BMT
The European Clinical Trials Directive (EU 2001; 2001/20/EC) was introduced to improve the efficiency of commercial and academic clinical trials. Concerns have been raised by interested organizations and institutions regarding the potential for negative impact of the Directive on non-commercial European clinical research. Interested researchers within the European Group for Blood and Marrow Transplantation (EBMT) were surveyed to determine whether researcher experiences confirmed this view. Following a pilot study, an internet-based questionnaire was distributed to individuals in key research positions in the European haemopoietic SCT community. Seventy-one usable questionnaires were returned from participants in different EU member states. The results indicate that the perceived impact of the European Clinical Trials Directive has been negative, at least in the research areas of interest to the EBMT
Zuivering van dompelbadrestanten met de Sentinel
Het doel van dit onderzoek is om het bloembollenbedrijfsleven en de KAVB in het bijzonder de kennis te geven waarmee zij kan beoordelen of zuivering van dompelbadrestanten met de Sentinel een reëel alternatief is, voor het geval het uitrijden van dompelbadrestanten in de toekomst geen werkbare oplossing meer zou zijn. Hiervoor is inzicht nodig in: - effectiviteit van zuivering met de Sentinel - het wettelijke kader waar bij gebruik van de Sentinel rekening gehouden dient te worden - kosten. Daarnaast is gevraagd de voor- en nadelen van biologische zuivering van dompelbadrestanten ten opzichte van zuivering met de Sentinel inzichtelijk te maken indien dat mogelijk is op basis van bestaande kennis
The effects of COVID-19 on child mental health:Biannual assessments up to April 2022 in a clinical and two general population samples
BACKGROUND: The COVID-19 pandemic has had an acute impact on child mental and social health, but long-term effects are still unclear. We examined how child mental health has developed since the start of the COVID-19 pandemic up to 2 years into the pandemic (April 2022).METHODS: We included children (age 8-18) from two general population samples (N = 222-1333 per measurement and N = 2401-13,362 for pre-covid data) and one clinical sample receiving psychiatric care (N = 334-748). Behavioral questionnaire data were assessed five times from April 2020 till April 2022 and pre-pandemic data were available for both general population samples. We collected parent-reported data on internalizing and externalizing problems with the Brief Problem Monitor and self-reported data on Anxiety, Depressive symptoms, Sleep-related impairments, Anger, Global health, and Peer relations with the Patient-Reported Outcomes Measurement Information System (PROMIS®).RESULTS: In all samples, parents reported overall increased internalizing problems, but no increases in externalizing problems, in their children. Children from the general population self-reported increased mental health problems from before to during the pandemic on all six PROMIS domains, with generally worst scores in April 2021, and scores improving toward April 2022 but not to pre-pandemic norms. Children from the clinical sample reported increased mental health problems throughout the pandemic, with generally worst scores in April 2021 or April 2022 and no improvement. We found evidence of minor age effects and no sex effects.CONCLUSIONS: Child mental health in the general population has deteriorated during the first phase of the COVID-19 pandemic, has improved since April 2021, but has not yet returned to pre-pandemic levels. Children in psychiatric care show worsening of mental health problems during the pandemic, which has not improved since. Changes in child mental health should be monitored comprehensively to inform health care and policy.</p
Making personalised nutrition the easy choice: creating policies to break down the barriers and reap the benefits
Personalised diets based on people\u27s existing food choices,and/or phenotypic, and/or genetic information hold potential to improve public dietary-related health. The aim of this analysis, therefore, has been to examine the degree to which factors which determine uptake of personalised nutrition vary between EU countries to better target of policies to encourage uptake, and optimise the health benefits of personalised nutrition technology. A questionnaire developed from previous qualitative research was used to survey nationally representative samples from 9 EU countries (N=9381). Perceived barriersto the uptake of personalised nutrition comprised three factors (data protection; the eating context; and societal acceptance). Trust insources of information comprised 4 factors (commerce and media;practitioners; government; family and friends). Benefits comprised single factor. Analysis of Variance (ANOVA) was employed to comparedifferences in responses between the United Kingdom; Ireland; Portugal;Poland; Norway; the Netherlands; Germany; and Spain. The resultsindicated that those in Greece, Poland, Ireland, Portugal and Spain,rated the benefits of personalised nutrition highest, suggesting aparticular readiness in these countries to adopt personalised nutritioninterventions. Greek participants were more likely to perceive the socialcontext of eating as a barrier to adoption of personalised nutrition,implying a need for support in negotiating social situations whilst on aprescribed diet. Those in Spain, Germany, Portugal and Poland scoredhighest on perceived barriers related to data protection. Government wasmore trusted than commerce to deliver and provide information onpersonalised nutrition overall. This was particularly the case inIreland, Portugal and Greece, indicating an imperative to build trust,particularly in the ability of commercial service providers to deliverpersonalised dietary regimes effectively in these countries. These findings, obtained from a nationally representative sample of EU citizensimply that a parallel, integrated, public-private delivery system would capture the needs of most potential consumer
Defining eye-fixation sequences across individuals and tasks: the Binocular-Individual Threshold (BIT) algorithm
We propose a new fully automated velocity-based algorithm to identify fixations from eye-movement records of both eyes, with individual-specific thresholds. The algorithm is based on robust minimum determinant covariance estimators (MDC) and control chart procedures, and is conceptually simple and computationally attractive. To determine fixations, it uses velocity thresholds based on the natural within-fixation variability of both eyes. It improves over existing approaches by automatically identifying fixation thresholds that are specific to (a) both eyes, (b) x- and y- directions, (c) tasks, and (d) individuals. We applied the proposed Binocular-Individual Threshold (BIT) algorithm to two large datasets collected on eye-trackers with different sampling frequencies, and compute descriptive statistics of fixations for larger samples of individuals across a variety of tasks, including reading, scene viewing, and search on supermarket shelves. Our analysis shows that there are considerable differences in the characteristics of fixations not only between these tasks, but also between individuals
Prognostic Factors in 77 Curative Chest Wall Resections for Isolated Breast Cancer Recurrence
Background: Full-thickness chest wall resection (CWR) is the preferred treatment for breast cancer (BC) patients with extensive isolated locoregional recurrence. It remains a challenge to select patients that will benefit most from this treatment. The aim of this study was to define prognostic factors in patients who undergo CWR with curative intent. Methods: BC patients who underwent a CWR with curative intent for recurrence of disease between 1986 and 2006 were included in this retrospective study. Twenty-two factors were studied in a univariate analyses, and multivariate stepwise Cox regression analyses was performed. Results: Seventy-seven patients were included in this study. The 5-year overall survival was 25%. There was one postoperative death. Univariate analyses showed that three prognostic factors were significantly correlated with OS and disease-free survival: (1) interval between primary treatment and CWR (P = .02 and .004, respectively), (2) chemotherapy for recurrence (P = .05 and .05, respectively), and (3) resection specimen smaller than 150 cm2(P = .03 and .009, respectively). An interval lasting >10 years between primary treatment and CWR remained statistically significantly correlated with better overall survival and disease-free survival after multivariate analyses. Conclusions: CWR is a safe treatment in patients who have isolated extensive BC recurrence. The best survival outcome was seen in patients after a disease-free interval of >10 years. Existing data show that adjuvant radiotherapy and adjuvant hormone therapy for estrogen-positive tumors improves overall survival. Neoadjuvant chemotherapy may be considered in individual patients
Regulators of AWC-Mediated Olfactory Plasticity in Caenorhabditis elegans
While most sensory neurons will adapt to prolonged stimulation by down-regulating their responsiveness to the signal, it is not clear which events initiate long-lasting sensory adaptation. Likewise, we are just beginning to understand how the physiology of the adapted cell is altered. Caenorhabditis elegans is inherently attracted to specific odors that are sensed by the paired AWC olfactory sensory neurons. The attraction diminishes if the animal experiences these odors for a prolonged period of time in the absence of food. The AWC neuron responds acutely to odor-exposure by closing calcium channels. While odortaxis requires a Gα subunit protein, cGMP-gated channels, and guanylyl cyclases, adaptation to prolonged odor exposure requires nuclear entry of the cGMP-dependent protein kinase, EGL-4. We asked which candidate members of the olfactory signal transduction pathway promote nuclear entry of EGL-4 and which molecules might induce long-term adaptation downstream of EGL-4 nuclear entry. We found that initiation of long-term adaptation, as assessed by nuclear entry of EGL-4, is dependent on G-protein mediated signaling but is independent of fluxes in calcium levels. We show that long-term adaptation requires polyunsaturated fatty acids (PUFAs) that may act on the transient receptor potential (TRP) channel type V OSM-9 downstream of EGL-4 nuclear entry. We also present evidence that high diacylglycerol (DAG) levels block long-term adaptation without affecting EGL-4 nuclear entry. Our analysis provides a model for the process of long-term adaptation that occurs within the AWC neuron of C. elegans: G-protein signaling initiates long-lasting olfactory adaptation by promoting the nuclear entry of EGL-4, and once EGL-4 has entered the nucleus, processes such as PUFA activation of the TRP channel OSM-9 may dampen the output of the AWC neuron
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