7,156 research outputs found
Comment on ``Inflation and flat directions in modular invariant superstring effective theories''
The inflation model of Gaillard, Lyth and Murayama is revisited, with a
systematic scan of the parameter space for dilaton stabilization during
inflation.Comment: 7 pages, 2 figure
Cardiovascular Health in Pregnant Women and Their Children - The Generation R Study
__Abstract__
Cardiovascular disease is a major public health problem in the general adult population.
1 Cardiovascular disease leads to over 17.3 million deaths per year and is the leading
cause of death and disability worldwide.1 In the Netherlands, cardiovascular disease
accounts for approximately 30% of current mortality rates among men and women.2
Because of the clinical impact that cardiovascular and metabolic diseases have at older
ages, research into related risk factors has mostly been focused on adults. However, in
the last decades, an accumulating body of evidence suggested that cardiovascular
health in younger age groups also has major long-term public health implications
Maternal obesity during pregnancy and cardiovascular development and disease in the offspring
Maternal obesity during pregnancy is an important public health problem in Western countries. Currently, obesity prevalence rates in pregnant women are estimated to be as high as 30Â %. In addition, approximately 40Â % of women gain an excessive amount of weight during pregnancy in Western countries. An accumulating body of evidence suggests a long-term impact of maternal obesity and excessive weight gain during pregnancy on adiposity, cardiovascular and metabolic related health outcomes in the offspring in fetal life, childhood and adulthood. In this review, we discuss results from recent studies, potential underlying mechanisms and challenges for future epidemiological studies
Three-way electrical gating characteristics of metallic Y-junction carbon nanotubes
Y-junction based carbon nanotube (CNT) transistors exhibit interesting switching behaviors, and have the structural advantage that the electrical gate for current modulation can be formed by any of the three constituent branches. In this letter, we report on the gating characteristics of metallic Y-CNT morphologies. By measuring the output conductance and transconductance we conclude that the efficiency and gain depend on the branch diameter and is electric field controlled. Based on these principles, we propose a design for a Y-junction based CNT switching device, with tunable electrical properties
Lepton-Flavour Violation in Ordinary and Supersymmetric Grand Unified Theories
By an explicit calculation we show that in ordinary SU(5) logarithmic
divergence in the amplitude of cancels among diagrams and
remaining finite part is suppressed by at least . In SUSY SU(5),
when the effect of flavour changing wave function renormalization is taken into
account such logarithmic correction disappears, provided a condition is met
among SUSY breaking masses. In SUGRA-inspired SUSY GUT the remaining
logarithmic effect is argued not to be taken as a prediction of the theory.Comment: 8 pages, LaTeX209 file, using axodraw.st
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