Results 41 to 50 of about 11,726 (308)

Delta Sigma Modulation and Demodulation

open access: yes, 2022
Contains results from a laboratory experiment on delta-sigma modulation/demodulation.
openaire   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Sigma-delta modulator: loop filters and quantization noise [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2013
In this paper the sigma-delta modulator was analyzed with the use of simulation. In particular, the author studied dependence of the quantization noise on the loop filtration.
Golub V. S.
doaj   +2 more sources

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

open access: yesMolecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla   +9 more
wiley   +1 more source

DESIGN AND SIMULATION OF HIGH PRECISION SECOND-ORDER SIGMA-DELTA MODULATOR FOR BLUETOOTH APPLICATIONS [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
A second-order sigma-delta modulator is presented in this paper which, according to the considered standards, is suitable for bluetooth applications. The oversampling ratio and signal bandwidth of the proposed modulator is 128 and 1 MHz, respectively ...
MOHAMMAD REZA FARSI, KHALIL MONFAREDI
doaj  

Realization of DVCCTA Based Versatile Modulator

open access: yesActive and Passive Electronic Components, 2014
A Differential Voltage Current Conveyor Transconductance Amplifier (DVCCTA) based versatile modulator is proposed which can work as an amplitude modulator, frequency modulator, delta modulator, and sigma delta modulator.
Neeta Pandey   +3 more
doaj   +1 more source

Proteasome inhibitor, ixazomib prevents topoisomerase‐I degradation and reverses irinotecan resistance in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Ixazomib inhibits proteasome‐mediated degradation of topoisomerase I induced by irinotecan, thereby restoring drug sensitivity and promoting tumor cell death in colorectal cancer. Irinotecan, a topoisomerase I (topoI) inhibitor, is widely used for colorectal cancer, but resistance remains a major clinical challenge.
Yuho Ebata   +10 more
wiley   +1 more source

Adaptive Delta-Sigma Modulation for Enhanced Input Dynamic Range

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
An adaptive delta-sigma modulator of 1st order with one-bit quantization is presented. Adaptation is instantaneous and based on an exponential law. The feedback signal is a multibit discrete-level signal generated by a digital-to ...
Clemens M. Zierhofer
doaj   +1 more source

Contribución al modelado y diseño de moduladores sigma-delta en tiempo continuo de baja relación de sobremuestreo y bajo consumo de potencia [PDF]

open access: yes, 2005
Los moduladores Sigma-Delta de tiempo continuo constituyen una técnica de conversión de señal analógica a señal digital que resulta ser una alternativa interesante para aplicaciones de alta velocidad.
Patón Álvarez, Susana
core  

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

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