We studied, through first-principles calculations based on the density functional theory, the charge distribution, the density of states and the tip rearrangement of two mirrored boron nitride nanocones with 240Å disclination angles and separated from each other from 2Å, 3Å and 10Å under the influence of an external electric field ranging from 0.5 V/Å to 1.1 V/Å applied along the axis. Changes ...

BACKGROUND We aimed to define the frequency and predictors of successful external cephalic version in a nationally-representative cohort of women with breech presentations and to compare maternal outcomes associated with successful external cephalic version versus persistent breech presentation. METHODS Using the Nationwide Inpatient Sample, a United States healthcare utilization database, we...

In this study, a two-state mechanochemical model is presented to describe the dynamic instability of microtubules (MTs) in cells. The MT switches between two states, the assembly and disassembly states. In assembly state, the growth of MTs includes two processes: free GTP-tubulin binding to the tip of protofilament (PF) and conformation change of PF, during which the first tubulin unit that cur...

This article explores how the Russia-Belarus relationship has countered external forces that have been shown to promote democratization. It seeks to answer the following questions: According to the democratization literature, what external factors make democratization more likely? How have RussiaBelarus ties countered these factors? And, how best can the United States and the European Union pro...

We investigate the response to an external magnetic field in the Hamiltonian mean-field model, which is a paradigmatic toy model of a ferromagnetic body and consists of plane rotators like XY spins. Due to long-range interactions, the external field drives the system to a long-lasting quasistationary state before reaching thermal equilibrium, and the susceptibility tensor obtained in the quasis...

Some types of animals exploit the external environment to support their cognitive processes, in the sense of patterns created in the environment that function as external mental states and serve as an extension to their mind. In the case of social animals the creation and exploitation of such patterns can be shared, thus obtaining a form of shared mind or collective intelligence. This paper exp...