A pragmatic, performance-based approach to levee safety assessments

Flood prone areas are often protected against flooding by an extensive network of flood defenses. To ensure their structural integrity, these flood defenses are periodically assessed. Many levees have been functioning well for decades, and have survived several relatively high hydraulic loads within their lifetime. However, information on...

Levee system reliability modeling: The length effect and Bayesian updating

In levee system reliability, the length effect is the term given to the phenomenon that the longer the levee, the higher the probability that it will have a weak spot and fail. Quantitatively, it is the ratio of the segment failure probability to the cross-sectional failure probability. The literature is lacking in methods to calculate the...

Editorial: Climate change, coasts and coastal risk

Grondslagen voor hoogwaterbescherming

De bescherming tegen overstromingen is essentieel voor de leefbaarheid van Nederland. In de Waterwet zijn daarom normen voor waterkeringen vastgelegd. Waterschappen en Rijkswaterstaat zorgen er voor dat de primaire waterkeringen die zij beheren aan deze normen voldoen. Hiervoor zijn praktisch toepasbare, uniforme rekenwijzen nodig waarmee een...

How to weigh coastal hazard against economic consequence (poster)

It is well recognised that sea level change over the coming century will have an extraordinary economic impact on coastal communities. To overcome the uncertainty that still surrounds the mechanics of shoreline recession and stochastic forcing, landuse planning and management decisions will require a robust and quantitative risk-based approach....

An innovative approach to determine economically optimal coastal setback lines for risk informed coastal zone management

Current methods used to determine Coastal setback lines have several limitations. Furthermore, the historical practice of defining setback lines based on a single deterministic estimate is also proving inadequate with the emergence of risk management style coastal planning frameworks which require probabilistic estimates of coastal recession....

The use of individual and societal risk criteria within the Dutch flood safety policy-nationwide estimates of societal risk and policy applications

The Dutch government is in the process of revising its flood safety policy. The current safety standards for flood defences in the Netherlands are largely based on the outcomes of cost-benefit analyses. Loss of life has not been considered separately in the choice for current standards. This article presents the results of a research project...

New safety standards for coastal flood defences in the Netherlands

The Dutch government is in the process of revising its flood safety policy. The current safety standards for flood defences in the Netherlands are largely based on the outcomes of cost-benefit analyses. Loss of life has not been considered separately in the choice for current standards. This article presents the results of a research project...

A risk-informed approach to coastal zone management

Economic and population growth have led to an unprecedented increase in the value at risk in coastal zones over the last century. To avoid excessive future losses, particularly in the light of projected climate change impacts, coastal zone managers have various instruments at their disposal. These primarily concern land-use planning ...

Catalysis of iron core formation in Pyrococcus furiosus ferritin

The hollow sphere-shaped 24-meric ferritin can store large amounts of iron as a ferrihydrite-like mineral core. In all subunits of homomeric ferritins and in catalytically active subunits of heteromeric ferritins a diiron binding site is found that is commonly addressed as the ferroxidase center (FC). The FC is involved in the catalytic Fe(II)...

How safe is safe enough?

Disasters can never be completely ruled out. The Dutch national government has therefore committed itself to the concept of risk rather than the false promise of absolute safety. The objectives of this study were to evaluate current regulatory practices in the domains of industrial and flood safety in the Netherlands, and to formulate proposals...

Computational chemistry of PQQ and QH-ADH

Primary amide synthesis from carboxylic acids with a lipase

The invention relates to a method of preparing a reaction product such as a primary amide, by means of two reagents A and B, which reagents form a salt that impedes fast conversion. The concentrations of the reagent A and the reagent B are chosen such that they comply with formula (I) wherein [A]T represents the concentration of the first...

Distribution of amine oxidases and amine dehydrogenases in bacteria grown on primary amines and characterization of the amine oxidase from Klebsiella oxytoca

Regulation of alcohol-oxidizing capacity in chemostat cultures of Acetobacter pasteurianus

Solvent recovery for the powderlink 1174 process

Document uit de collectie Chemische Procestechnologie

Chemistry of PQQ