Results 111 to 120 of about 2,509,073 (379)

Logarithmic circuit with wide dynamic range [PDF]

, 1978
A circuit deriving an output voltage that is proportional to the logarithm of a dc input voltage susceptible to wide variations in amplitude includes a constant current source which forward biases a diode so that the diode operates in the exponential ...
Manus, E. A., Wiley, P. H.
core   +1 more source

A model based DC analysis of SiPM breakdown voltages

, 2017
A new method to determine the breakdown voltage of SiPMs is presented. It is backed up by a DC model which describes the breakdown phenomenon by distinct avalanche turn-on ($V_{01}$) and turn off ($V_{10}$) voltages.
Hegyesi, Gyula, Kalinka, Gabor, Molnar, Jozsef, Nagy, Ferenc   +3 more
core   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source

Comparative characterisation of conventional and textured 11 kV insulators using the rotating wheel dip test

High Voltage, 2020
Surface tracking and erosion is an irreversible degradation occurring on the insulator surface, and this can ultimately lead to failure of the insulator.
Adnan Krzma, Maurizio Albano, Abderrahmane Haddad   +2 more
doaj   +1 more source

Lightning impulse tests on air-breakdown level in point-plane electrode configuration [PDF]

, 2014
In the past several decades, extensive amount of research work has been done to understand the fundamental characteristics of the electrical breakdown.
Che Mok @ Adnan, Mohd Dasri
core  

STAT3 expression is reduced in cardiac pericytes in HFpEF and its loss reduces cellular adhesion and induces pericyte senescence

FEBS Letters, EarlyView.
Heart failure with preserved ejection fraction (HFpEF) accounts for half of the heart failure cases. It is characterised by microvascular dysfunction, associated with reduced pericyte coverage and diminished STAT3 expression in pericytes. Loss of STAT3 impairs pericyte adhesion, promotes senescence, and activates a pro‐fibrotic gene program.
Leah Rebecca Vanicek, Ariane Fischer, Mariano Ruz Jurado, Anita Tamiato, Tara Procida‐Kowalski, Jochen Wilhelm, Dennis Hecker, Maximilian Merten, Felicitas Escher, Badder Kattih, Valentina Puntmann, David John, Marcel H. Schulz, Eike Nagel, Stefanie Dimmeler, Guillermo Luxán   +15 more
wiley   +1 more source

Modeling and Simulation on the Hybrid Solution of Static Var Generator and Synchronous Condenser for Unlocking Power Output Limitation of Wind Farms Integrated into Weak Grid

Energies
The issues of low inertia, overvoltage, and wide-frequency oscillations in high-proportion renewable energy systems have become prominent, posing major challenges to renewable energy integration and threatening grid stability.
Haiyang Liang, Yanbin Zhang, Shuran Liu, Jianling Wu, Jifeng Fan, Yi Zhang, Junjie Yu, Tianlong Zhang, Ziyi Zhu   +8 more
doaj   +1 more source

Voltage Uncertainties in the Presence of Photovoltaic Systems [PDF]

arXiv, 2016
With the rising demand for solar energy installation, there is a pressing need for utilities to regulate the voltages at the distribution level. In grids with high penetration of photovoltaic (PV) systems, voltage fluctuations can occur at the distribution systems, resulting in inverter tripping and insufficient power to meet the load.
arxiv  

Pseudo-gradient Based Local Voltage Control in Distribution Networks [PDF]

, 2015
Voltage regulation is critical for power grids. However, it has become a much more challenging problem as distributed energy resources (DERs) such as photovoltaic and wind generators are increasingly deployed, causing rapid voltage fluctuations beyond what can be handled by the traditional voltage regulation methods.
arxiv   +1 more source

Temperature control system with a pulse width modulated bridge [PDF]

, 1973
A temperature control system, which includes a modified wheatstone bridge with a resistive-capacitive (RC) circuit in one leg of the bridge, is disclosed.
Heyser, R. C.
core   +1 more source