Results 131 to 140 of about 18,365,131 (347)

Logarithmic circuit with wide dynamic range [PDF]

open access: yes, 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

Effective Dynamic Range in Measurements with Flash Analog-to-Digital Convertor

open access: yes, 2003
Flash Analog to Digital Convertor (FADC) is frequently used in nuclear and particle physics experiments, often as the major component in big multi-channel systems. The large data volume makes the optimization of operating parameters necessary.
D.Z. Liu   +17 more
core   +1 more source

High dynamic range liquid crystal displays with a mini-LED backlight.

open access: yesOptics Express, 2018
We analyze the performance of high dynamic range liquid crystal displays (LCDs) using a two-dimensional local dimming mini-LED backlight. The halo effect of such a HDR display system is investigated by both numerical simulation and human visual ...
Guanjun Tan   +4 more
semanticscholar   +1 more source

Dual targeting of RET and SRC synergizes in RET fusion‐positive cancer cells

open access: yesMolecular Oncology, EarlyView.
Despite the strong activity of selective RET tyrosine kinase inhibitors (TKIs), resistance of RET fusion‐positive (RET+) lung cancer and thyroid cancer frequently occurs and is mainly driven by RET‐independent bypass mechanisms. Son et al. show that SRC TKIs significantly inhibit PAK and AKT survival signaling and enhance the efficacy of RET TKIs in ...
Juhyeon Son   +13 more
wiley   +1 more source

Post-acceleration internal enhancement technology for streak camera and its nonlinear intensity correction

open access: yesShenzhen Daxue xuebao. Ligong ban
To achieve high dynamic range performance in X-ray streak cameras and precision diagnostics, the theory of post-acceleration internal gain technology in streak cameras is investigated from photon density detection threshold.
GU Li, YANG Fang, YANG Qinlao
doaj   +1 more source

Visual Contrast Enhancement Algorithm Based on Histogram Equalization

open access: yesSensors, 2015
Image enhancement techniques primarily improve the contrast of an image to lend it a better appearance. One of the popular enhancement methods is histogram equalization (HE) because of its simplicity and effectiveness.
Chih-Chung Ting   +4 more
doaj   +1 more source

Detection of circulating tumor DNA in colorectal cancer patients using a methylation‐specific droplet digital PCR multiplex

open access: yesMolecular Oncology, EarlyView.
We developed a cost‐effective methylation‐specific droplet digital PCR multiplex assay containing tissue‐conserved and tumor‐specific methylation markers. The assay can detect circulating tumor DNA with high accuracy in patients with localized and metastatic colorectal cancer.
Luisa Matos do Canto   +8 more
wiley   +1 more source

A Novel Hybrid RF-DC Converter Using CMOS n-Well Process

open access: yesIEEE Access
The use of RF harvesting as a power source for low-power systems, such as wearables, wireless sensor nodes, and Internet of Things, has gained attention. The primary obstacle to develop an effective RF-DC system has been the RF rectifier. The method most
Munir A. Al-Absi   +1 more
doaj   +1 more source

A High Performance Delta-Sigma Modulator for Neurosensing

open access: yesSensors, 2015
Recorded neural data are frequently corrupted by large amplitude artifacts that are triggered by a variety of sources, such as subject movements, organ motions, electromagnetic interferences and discharges at the electrode surface.
Jian Xu   +4 more
doaj   +1 more source

Overlap diffusion for increasing phototransistor dynamic range [PDF]

open access: yes, 1972
Construction of improved phototransistors to provide increased base-collector capacitance is described. Silicon or germanium semiconductor wafers are used as examples.
Mccann, D. H.
core   +1 more source

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