Solids can be cooled by driving impurity ions with lasers, allowing isidor oreiller them to transfer heat from the lattice phonons to the electromagnetic surroundings.This exemplifies a quantum thermal machine, which uses a quantum system as a working medium to transfer heat between reservoirs.We review the derivation of the Bloch-Redfield equation
Limits on the core temperature anisotropy of solar wind protons
We analyse the temperature anisotropy of the protons in the solar wind and thereby concentrate on plasma data obtained in the year 1976 of the Helios 1 and Helios 2 missions.We derive the core proton temperatures and , in the directions perpendicular and parallel to the magnetic field, as well as the core parallel plasma beta,.The data ar
CHD3 proteins and polycomb group proteins antagonistically determine cell identity in Arabidopsis.
Dynamic regulation of chromatin structure is of fundamental importance for modulating genomic activities in higher eukaryotes.The opposing activities of Polycomb group (PcG) and trithorax group (trxG) proteins are part of a chromatin-based cellular memory system ensuring the correct expression of specific transcriptional programs at defined develop
On the Benefits of Listen before Talk Scheme for NB-Fi Networks
NB-Fi (Narrow Band Fidelity) is a promising protocol for low-power wide-area networks.NB-Fi networks use license-exempt Industrial, Scientific, and Medical (ISM) bands and, thus, NB-Fi devices can work in two modes: with and without Listen Before Talk (LBT).This paper compares these modes with different implementations of LBT in terms of packet los