88,659 research outputs found
Timely detection of cancer relapse. Routine follow-up in patients treated for ovarian and breast cancer
No full textContains fulltext :
101055.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 22 januari 2013Promotores : Verbeek, A.L.M., Tjan-Heijnen, V.C. Co-promotores : Dijck, J.A.A.M. van, Vegt, F. d
Two-step estimation of panel data models with censored endogenous variables and selection bias.
No full textBreast cancer in Iran: Clues for prevention and control strategies
No full textContains fulltext :
110431.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 27 augustus 2012Promotores : Verbeek, A.L.M., Kiemeney, L.A.L.M. Co-promotor : Broeders, M.J.M
Human fecundity under natural conditions and during in vitro fertilization
No full textContains fulltext :
mmubn000001_237730979.pdf (Publisher’s version ) (Open Access)Promotores : G. Zielhuis, A. Verbeek, F. Gabreëls en C. Hamilton181 p
Rheology and Processing of Novatein Thermoplastic Protein
No full textBiopolymers have become suitable alternatives to petro-chemical polymers as they can biodegrade and are considered environmentally friendly. Novatein Thermoplastic Protein (NTP) is a newly developed plastic material using bovine bloodmeal. Knowledge of the rheology of NTP is required to assess processability and to optimise process design. The objective of this research was to use capillary rheometry and batch mixing to determine the rheology and processing behaviour of NTP. These were evaluated at constant plasticiser content, but using three different ratios of water to plasticiser (triethylene glycol, TEG). Each of these was evaluated at 115, 120 and 125 °C. It was shown that NTP is a non-Newtonian, shear thinning fluid with similar behaviour compared to linear low density polyethylene. It was found that viscosity is highly dependent on water content; decreasing with increasing water content. At a shear rate of 15 s-1, the apparent viscosity for the standard formulation (60 parts water per hundred parts bloodmeal) was 2000 Pa.s compared to 7000 Pa.s for the formulation containing 30 parts water [water (30) : TEG (30)], measured at 115 °C. Viscosity decreased slightly with increasing temperature and the degree of non-Newtonian behaviour was mostly unaffected by temperature. The flow behaviour index, n, was found to be in the range 0.11 to 0.17, with no discernable temperature dependence. In the standard formulation, the total amount of plasticiser and ratio water to TEG was higher, which resulted in different flow behaviour with respect to temperature. Batch mixing was used to determine the processing window (∆t) by monitoring torque changes over time during mixing. Processing window for standard NTP decreased from 260 to 220 seconds when the mixing speed was increased from 75 to 95 RPM. The processing window was shortened with reducing water content or an increase in temperature. At 125 °C and 95 RPM the processing window was only 67 seconds for the formulation with 30 parts water and 30 parts TEG. It was concluded that crosslinking was accelerated with an increase in shear and temperature or a reduction in moisture content. Thermal or mechanical energy activates crosslinking, while water plasticises the polymer which decreases the rate of crosslinking. Processing NTP required a delicate balance of supplying enough mechanical and thermal energy for chain rearrangement and consolidation, but preventing fast crosslinking. Crosslinking can be retarded using larger amounts of water, but excessive water may lead to problems after product moulding. Replacing water with TEG does not prevent crosslinking, but does lower the apparent viscosity during processing
Recent Advances in Smellscape Research for the Built Environment
No full textThe interrelationships between humans, smells and the built environment have been the focus of increasing numbers of research studies in the past ten years. This paper reviews these trends and identifies the challenges in smellscape research from three aspects: methodological approaches, artistic design interventions and museum practices, and odour policy making. In response to the gaps and challenges identified, three areas of future research have also been identified for this field: smell archives and databases, social justice within odour control and management, and research into advanced building materials. [Abstract copyright: Copyright © 2021 Xiao, Aletta, Radicchi, McLean, Shiner and Verbeek.
Stressing Knowledge. Organisational closed-ness and knowledge acquisition under pressure
No full textContains fulltext :
178924.pdf (Publisher’s version ) (Open Access)Organisations have been analytically conceptualised as being somewhat analogous to individuals for a long time. They have culture; they can learn; and they can behave in various odd ways. But how far can the simile be stretched? What other types of organisational cognition can we imagine? And what benefits can we gain by introducing new perspectives of this kind? This study shows that organisations can exhibit familiar symptoms of stress, such as closing themselves to the outside world and becoming unreceptive to external stimuli and input. They retreat to what is familiar and safe and put on blinders to hide anything that does not already fit with how they feel things should be, often in situations where they would be best served by being as open to and perceptive of these external stimuli as possible. Using a model of organisational behaviour that connects external pressure to an internal mode of operation and to specific knowledge-seeking behaviours, the study examines two case pairs—two success stories and two catastrophic failures—to examine patterns of organisational cognition. By comparing and contrasting the failure of the FBI during the 1993 Waco siege with its subsequent success during the 1996 Montana Freemen standoff, and doing the same with the Swedish Foreign Ministry’s handling of the 2004 Southeast Asian tsunami and the 2006 evacuation from the war in Lebanon, a pattern emerges where certain types of knowledge proved to be the key to staying as open-minded, responsive, and dynamic as these crises demanded. This knowledge can be used both during a crisis to resolve some of the confusion and time pressure that is endemic to such situations, as well as before a crisis to mitigate or even stave off the approaching chaos.Radboud University, 04 december 2017Promotor : Verbeek, J.A. Co-promotor : Bynander, F
Conjunctuur en suïcide. Een tweede proef op de som van Van Houwelingen, Tazelaar en Verbeek
No full textA discussion of the validity of the conclusions reached by J. van Houwelingen, F. Tazelaar, & A. Verbeek as reported in "Werkloosheid, gezondheid en sterfte in naoorlogs Nederland" (Unemployment, Health, and Mortality in Post-War Netherlands [see SA 32:3/84O0139]). A reformulation of their main conclusion is suggested, based on a recalculation of the statistics used. Their recommendation for microsociological research regarding support for specific groups is reinforced. 2 Tables. M. Barke
Tomato chocolàte virus: a new plant virus infecting tomato and a proposed member of the genus Torradovirus
No full textA new virus was isolated from a tomato plant from Guatemala showing necrotic spots on the bases of the leaves and chocolate-brown patches on the fruits. Structural and molecular analysis showed the virus to be clearly related to but distinct from the recently described Tomato torrado virus (ToTV) and Tomato marchitez virus (ToMarV), both members of the genus Torradovirus. The name tomato chocolàte virus is proposed for this new torradovirus. M. Verbeek and A. Dullemans contributed to this research equally. Nucleotide sequence data reported are available in the GenBank database under accession numbers FJ560489 (RNA1) and FJ560490 (RNA2)
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
- …
