Results 61 to 70 of about 890,396 (390)

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

Coincidence time resolution of radiation detector based on 6×6 mm2 ToF SiPM detectors with different readout schemes

open access: yesFrontiers in Physics, 2023
Introduction: Nowadays, attention is growing on the Silicon Photomultipliers (SiPMs) detector for many applications, especially in nuclear medicine. In Positron Emission Tomography (PET) scanner, timing performance of a PET detector plays a significant ...
Changyu Li   +4 more
doaj   +1 more source

Low phase noise oscillator using two parallel connected amplifiers [PDF]

open access: yes, 1987
A high frequency oscillator is provided by connecting two amplifier circuits in parallel where each amplifier circuit provides the other amplifier circuit with the conditions necessary for oscillation.
Kleinberg, Leonard L.
core   +1 more source

Development and Evaluation of a Tutorial to Improve Students' Understanding of a Lock-in amplifier

open access: yes, 2016
A lock-in amplifier is a versatile instrument frequently used in physics research. However, many students struggle with the basic operating principles of a lock-in amplifier which can lead to a variety of difficulties. To improve students' understanding,
DeVore, Seth   +3 more
core   +2 more sources

A filter synthesis technique applied to the design of multistage broad-band microwave amplifiers [PDF]

open access: yes, 2002
A method for designing multistage broad-band amplifiers based upon well-known filter synthesis techniques is presented. Common all-pole low-pass approximations are used to synthesize prototype amplifier circuits that may be scaled in frequency and ...
Hunter, I.   +3 more
core   +1 more source

Social context prevents heat hormetic effects against mutagens during fish development

open access: yesFEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere   +5 more
wiley   +1 more source

Inflammation amplifier, a new paradigm in cancer biology.

open access: yesCancer Research, 2014
Tumor-associated inflammation can induce various molecules expressed from the tumors themselves or surrounding cells to create a microenvironment that potentially promotes cancer development.
T. Atsumi   +12 more
semanticscholar   +1 more source

FET comparator detects analog signal levels without loading analog device [PDF]

open access: yes, 1966
FET comparator circuit detects discrete analog computer output levels without excessively loading the output amplifier of the computer. An FET common source amplifier is coupled by a differential amplifier to a bistable transistor flip-flop. This circuit
Wallace, H. L.
core   +1 more source

Nano strain-amplifier: making ultra-sensitive piezoresistance in nanowires possible without the need of quantum and surface charge effects [PDF]

open access: yes, 2016
This paper presents an innovative nano strain-amplifier employed to significantly enhance the sensitivity of piezoresistive strain sensors. Inspired from the dogbone structure, the nano strain-amplifier consists of a nano thin frame released from the ...
Afzaal Qamar   +9 more
core   +3 more sources

Autophagy in cancer and protein conformational disorders

open access: yesFEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source

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