Results 51 to 60 of about 6,590,982 (394)

Ultra-stable oscillator with complementary transistors [PDF]

open access: yes, 1974
A high frequency oscillator, having both good short and long term stability, is formed by including a piezoelectric crystal in the base circuit of a first bi-polar transistor circuit, the bi-polar transistor itself operated below its transitional ...
Kleinberg, L. L.
core   +1 more source

Recombination in polymer-fullerene bulk heterojunction solar cells

open access: yes, 2010
Recombination of photogenerated charge carriers in polymer bulk heterojunction (BHJ) solar cells reduces the short circuit current (Jsc) and the fill factor (FF).
A. Rose   +5 more
core   +1 more source

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez   +12 more
wiley   +1 more source

Temperature telemetric transmitter Patent [PDF]

open access: yes, 1970
Temperature telemetric transmitter with frequency determining tank circuit for short range ...
Harrison, R. G., Jr.
core   +1 more source

Multi‐Omics Integration for Advancing Glioma Precision Medicine

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Gliomas are among the most malignant and aggressive tumors of the central nervous system, characterized by the absence of early diagnostic markers, poor prognosis, and a lack of effective treatments. Advances in high‐throughput technologies have facilitated a refined molecular classification of gliomas, incorporating genetic features. However,
Maria Guarnaccia   +4 more
wiley   +1 more source

Research on Measures to Limit Short-Circuit Current by Renovating the Equipment of the Power Grid

open access: yesEnergies
This paper addresses the increasingly severe issue of exceeding short-circuit current limits brought about by the rapid development of large power grids.
Shuqin Sun   +5 more
doaj   +1 more source

Propositional logic with short-circuit evaluation: a non-commutative and a commutative variant [PDF]

open access: yes, 2018
Short-circuit evaluation denotes the semantics of propositional connectives in which the second argument is evaluated only if the first argument does not suffice to determine the value of the expression.
Bergstra, Jan A.   +2 more
core   +1 more source

Investigation of Irreversible Demagnetization in Switched Flux Permanent Magnet Machines under Short-Circuit Conditions [PDF]

open access: yes, 2017
The irreversible magnet demagnetization phenomena are investigated in this paper , under both healthy and short - circuit conditions for a switched flux permanent magnet (SFPM) machine.
Gabsi, M.   +4 more
core   +3 more sources

Post‐COVID Fatigue Is Associated With Reduced Cortical Thickness After Hospitalization

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuropsychiatric symptoms are among the most prevalent sequelae of COVID‐19, particularly among hospitalized patients. Recent research has identified volumetric brain changes associated with COVID‐19. However, it currently remains poorly understood how brain changes relate to post‐COVID fatigue and cognitive deficits.
Tim J. Hartung   +190 more
wiley   +1 more source

Binary-selectable detector holdoff circuit [PDF]

open access: yes, 1974
High-speed switching circuit protects detectors from sudden, extremely-intense backscattered radiation that results from short-range atmospheric dust layers, or low-level clouds, entering laser/radar field of view.
Kadrmas, K. A.
core   +1 more source

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