Six months exclusive breastfeeding : a relational behaviour influenced by actual and virtual social networks : a thesis presented in fulfilment of the requirements for the degree Doctor of philosophy in Midwifery, Massey University, Manawatu, New Zealand

Six months exclusive breastfeeding:|ba relational behaviour influenced by actual and virtual social networks : a thesis presented in fulfilment of the requirements for the degree Doctor of philosophy in Midwifery, Massey University, Manawatu, New Zealan

A Note on Short Intervals Containing Primes

In 1999, P. Dusart showed that for x ≥ 3275, there exists at least a prime number in the interval (x, x(1 + 1/(2ln²x))] and in 2003, O. Ramaré and Y. Saouter showed that for x ≥ 10726905041 there exists at least a prime number in the interval (x(1 − ∆⁻¹), x], in which ∆ = 28314000. In this note, we show that for x ≥ 1.17×10¹⁶³⁴, we can yield Ramaré-Saouter’s result from Dusart’s result

Electric-field-driven polymer entry into asymmetric nanoscale channels

The electric-field-driven entry process of flexible charged polymers such as single stranded DNA (ssDNA) into asymmetric nanoscale channels such as alpha-hemolysin protein channel is studied theoretically and using molecular dynamics simulations. Dependence of the height of the free-energy barrier on the polymer length, the strength of the applied electric field and the channel entrance geometry is investigated. It is shown that the squeezing effect of the driving field on the polymer and the lateral confinement of the polymer before its entry to the channel crucially affect the barrier height and its dependence on the system parameters. The attempt frequency of the polymer for passing the channel is also discussed. Our theoretical and simulation results support each other and describe related data sets of polymer translocation experiments through the alpha-hemolysin protein channel reasonably well