A Still for Pure Water

A Stochastic Still Water Response Model∗

In this study a stochastic field model for the still water loading is formulated where the statistics (mean value, standard deviation, and correlation) of the sectional forces are obtained by integration of the load field over the relevant part of the ship structure. The objective of the model is to establish the stochastic load field conditional on a given draft and trim of the vessel. Emphasi...

Community Water Fluoridation: is it Still Worthwhile?

Can you still drink the water?

What began as a straightforward (and long overdue) move to reauthorize the Safe Drinking Water Act has become an intriguing political drama that may be much more complex considering the possible risks, potential costs, and intended benefits to consumers and taxpayers. The process began on 8 September 1993, when EPA Administrator Carol Browner, on behalf of the Clinton administration, set forth ...

Fluorescent asymmetric bis-ureas for pyrophosphate recognition in pure water.

Three fluorescent asymmetric bis-urea receptors (L1-L3) have been synthesised. The binding properties of L1-L3 towards different anions (fluoride, acetate, hydrogencarbonate, dihydrogen phosphate, and hydrogen pyrophosphate HPpi(3-)) have been studied by means of (1)H-NMR, UV-Vis and fluorescence spectroscopy, single crystal X-ray diffraction, and theoretical calculations. In particular, a rema...

Vitamin A Deficiency among Rural Primary School Children, A still Neglected Group for Vitamin A Supplementation Strategies

Background: Vitamin A deficiency (VAD) is still a public health problem across the globe and also in Burkina Faso, especially for under-five-years-old children. Since less information is available about the prevalence of VAD among the primary school children, this study aimed to study this area. Methods: A randomised double-blind placebo-controlled trial was conducted to assess the effect of hi...