Motivated by a recent discussion about the role of flat directions, a typical feature of supersymmetric models, in the process of particle production in the early universe a consistent model of inflation and preheating in supergravity with MSSM fields has been built. It is based on a model proposed by M. Kawasaki, M. Yamaguchi and T. Yanagida. In the inflationary stage, the flat directions acqu...

OBJECTIVE To examine the impact of a national intervention to improve the postabortion care (PAC) content of midwifery education in Nigeria. METHODS A 3-part quantitative assessment was carried out during and post-intervention. The first baseline component developed and examined the intervention to improve teaching capacity and improve the PAC curriculum among 6 midwifery schools that were to...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

It is generally believed that the cosmological constant problem is the most severe hierarchy problem in particle physics. The hierarchy problem has been formulated since 1975 in connection with grand unified theories(GUTs). GUTs introduce two scales which differ by a factor of 10. At the classical Lagrangian level, there appear parameters which are of order 10 GeV. But loop corrections and spon...

It is generally believed that the cosmological constant problem is the most severe hierarchy problem in particle physics. The hierarchy problem has been formulated since 1975 in connection with grand unified theories(GUTs). GUTs introduce two scales which differ by a factor of 10. At the classical Lagrangian level, there appear parameters which are of order 10 GeV. But loop corrections and spon...

In a class of two Higgs doublet model, where one Higgs doublet generates masses of quarks and charged leptons whereas the other Higgs doublet with a tiny vacuum expectation value(VEV) generates neutrino Dirac masses, thermal leptogenesis suitably works at low energy scale as keeping no enhancement of lepton number violating washout effects. In addition, Thermal leptogenesis in a supersymmetric ...

Robots have entered our domestic lives as pets, caretakers and vacuum cleaners. Yet, little is known about their impact on the home. This paper takes first steps towards addressing this omission, by reporting on results from an empirical study of iRobot’s Roomba –a vacuuming robot—that examined adoption and use. Our findings suggest that, by developing intimacy to the robot, our participants we...

Three different drying methods, microwave spouted bed drying (MSBD), microwave-vacuum drying (MVD), and hot air drying (AD), were used to dry diced sweet potato. The drying characteristics and product quality are discussed in terms of the drying kinetics, rehydration ratio, expansion ratio, breaking force (crispness), product colour, and retention of β-Carotene. As expected the drying rates in ...

Buildings account for a significant portion of a nation’s total energy consumption. To meet the global demand for greater energy efficiency, many countries are drastically strengthening insulation regulations for buildings. Thus, dramatically thicker wall insulation may be required, which can adversely affect the value of a building by reducing its effective floor area. Hence, high-performance ...