Quaternary geology in urban areas: examples from the Netherlands

2000 ◽  
Vol 151 (1-2) ◽  
pp. 1-8
Author(s):  
Ed F. J. De Mulder ◽  
Sandra Lauffer ◽  
Wietske J. De Vries
Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1865
Author(s):  
Bala Bhavya Kausika ◽  
Wilfried G. J. H. M. van Sark

Geographic information system (GIS) based tools have become popular for solar photovoltaic (PV) potential estimations, especially in urban areas. There are readily available tools for the mapping and estimation of solar irradiation that give results with the click of a button. Although these tools capture the complexities of the urban environment, they often miss the more important atmospheric parameters that determine the irradiation and potential estimations. Therefore, validation of these models is necessary for accurate potential energy yield and capacity estimations. This paper demonstrates the calibration and validation of the solar radiation model developed by Fu and Rich, employed within ArcGIS, with a focus on the input atmospheric parameters, diffusivity and transmissivity for the Netherlands. In addition, factors affecting the model’s performance with respect to the resolution of the input data were studied. Data were calibrated using ground measurements from Royal Netherlands Meteorological Institute (KNMI) stations in the Netherlands and validated with the station data from Cabauw. The results show that the default model values of diffusivity and transmissivity lead to substantial underestimation or overestimation of solar insolation. In addition, this paper also shows that calibration can be performed at different time scales depending on the purpose and spatial resolution of the input data.


2010 ◽  
Vol 32 (4) ◽  
pp. 368-376 ◽  
Author(s):  
Thijs Fassaert ◽  
Mark Nielen ◽  
Robert Verheij ◽  
Arnoud Verhoeff ◽  
Jack Dekker ◽  
...  

2005 ◽  
Vol 50 (S13) ◽  
pp. 247-274 ◽  
Author(s):  
Hilde Bras ◽  
Jan Kok

This article investigates developments in and antecedents of socially mixed marriage in the rural Dutch province of Zeeland during the long nineteenth century, taking individual and family histories, community contexts, and temporal influences into account. A government report of the 1850s said of Zeeland that farmers and workers lived “in indifference together”. However, our analysis of about 163,000 marriage certificates reveals that 30 to 40 per cent of these rural inhabitants continued to marry outside their original social class. Multivariate logistic regressions show that heterogamous marriages can be explained first and foremost by the life-course experiences of grooms and brides prior to marriage. Previous transitions in their occupational careers (especially to non-rural occupations for grooms, and to service for brides), in their migration trajectories (particularly moves to urban areas), and changes in the sphere of personal relationships (entering widowhood, ageing) are crucial in understanding marriage mobility.


2003 ◽  
Vol 130 (3) ◽  
pp. 431-441 ◽  
Author(s):  
W. van PELT ◽  
M. A. S. de WIT ◽  
W. J. B. WANNET ◽  
E. J. J. LIGTVOET ◽  
M. A. WIDDOWSON ◽  
...  

Results of the Dutch laboratory surveillance of bacterial gastroenteritis between 1991 and 2001 are presented and compared with recent findings in general practices and in the community. Between 1996 and 2000 the mean annual number of stools screened by sentinel laboratories was about 1000 samples/100000 inhabitants, which is 4% of the estimated annual incidence of gastroenteritis in the Dutch population. Campylobacter (36/100000 inhabitants) and salmonella (24/100000 inhabitants) were the main pathogens isolated. Since 1996, the incidence of laboratory confirmed salmonellosis decreased by 30%, predominantly among young children. The incidence of campylobacter was highest in urban areas and Salmonella Enteritidis emerged as the predominant serotype in urban areas. Between 1991 and 2001, multi-resistant Salmonella Typhimurium DT104 emerged to comprise up to 15% of all salmonella isolates in 2001. Reported rates of Shigella spp. and Yersinia spp. varied little, with average annual incidences of 3·2 and 1·2 cases/100000 inhabitants, respectively. Escherichia coli O157 (90% STEC) was scarcely found (0·26/100000).


2007 ◽  
Vol 56 (4) ◽  
pp. 165-173 ◽  
Author(s):  
R.E. de Graaf ◽  
N.C. van de Giesen ◽  
F.H.M. van de Ven

Urbanization, land subsidence and sea level rise will increase vulnerability to droughts in the urbanized low-lying areas in the western part of the Netherlands. In this paper a possibility is explored to decrease vulnerability of urban areas by implementing an alternative water supply option. A four component vulnerability framework is presented that includes threshold capacity, coping capacity, recovery capacity and adaptive capacity. By using the vulnerability framework it is elaborated that current water supply strategies in the Netherlands mainly focus on increasing threshold capacity by constructing improved water storage and delivery infrastructure. A complete vulnerability decreasing strategy requires measures that include all four components. Adaptive capacity can be developed by starting experiments with new modes of water supply. A concept which is symbolically called ‘the closed city’ uses local urban rainfall as the only source of water supply. The ‘closed city’ can decrease the water dependence of urban areas on (1) the surrounding rural areas that are diminishing in size and that are increasingly under strain and (2) river water resources that will probably be less constant and reliable as a result of climate change.


2010 ◽  
Vol 139 (4) ◽  
pp. 530-538 ◽  
Author(s):  
A. HOFHUIS ◽  
W. VAN PELT ◽  
Y. T. H. P. VAN DUYNHOVEN ◽  
C. D. M. NIJHUIS ◽  
L. MOLLEMA ◽  
...  

SUMMARYTo estimate the change in the seroprevalence and risk factors for toxoplasmosis in The Netherlands, a study was conducted in the general population in 2006/2007, similarly designed as a previous study in 1995/1996. Testing 5541 sera for IgG antibodies against Toxoplasma gondii showed a marked decrease of the overall seroprevalence to 26·0% [95% confidence interval (CI) 24·0–28·0], compared to 40·5% (95% CI 37·5–43·4) in 1995/1996. In women of reproductive age the seroprevalence decreased from 35·2% (95% CI 32·9–38·6) in 1995/1996 to 18·5% (95% CI 16·2–20·7) in 2006/2007, leaving the majority of pregnant women susceptible to primary infection with T. gondii and their babies to congenital toxoplasmosis. In participants aged ⩾20 years, Toxoplasma seropositivity was associated with living in the Northwest, living in urban areas, low educational level, consumption of raw pork, keeping a cat, and not having occupational contact with clients or patients. For younger participants, risk factors were keeping sheep or cattle, consumption of raw unwashed vegetables and putting sand in the mouth.


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