Stopping-Power Differences Between Positive and Negative Pions at Low Velocities

Relationship between positive and negative affect 1 On the relationship between positive and negative affect: Their..

A Novel Low Voltage, Low Power and High Gain Operational Amplifier Using Negative Resistance and Self Cascode Transistors

In this work a low power, low voltage and high gain operational amplifier is proposed. For this purpose a negative resistance structure is used in parallel with output to improve the achievable gain. Because of using self cascode transistors in the output, the proposed structure remains approximately constant in a relatively large output voltage swing causing an invariable gain. To evaluate the...

Electromagnetic mass differences of pions and kaons

We use the Cottingham method to calculate the pion and kaon electromagnetic mass differences with as few model dependent inputs as possible. The constraints of chiral symmetry at low energy, QCD at high energy and experimental data in between are used in the dispersion relation. We find excellent agreement with experiment for the pion mass difference. The kaon mass difference exhibits a strong ...

The Electromagnetic Mass Difference of Pions at Low Temperature

We compute low temperature corrections to the electromagnetic mass difference of pions in the chiral limit. The computation is done in a model independent way in the framework of chiral perturbation theory, using the background field method and the hard thermal loop approximation. We also generalize at low temperature the sum rule of Das et al. We find that the mass difference between the charg...

Investigation of The Relationships Between Reinforcement Sensitivity and Positive and Negative Emotion Dysregulation

Background and Aim: The primary purpose of this study was to investigate the relationships between reward sensitivity and punishment sensitivity and positive emotion regulation strategies and negative emotion regulation strategies among students. Materials and methods: 189 students studying at one of Tehran Universities were selected by accessible random sampling method, and then Emotion Regul...