Results 31 to 40 of about 97,485 (296)
Effects of a space modulation on the behavior of a 1D alternating Heisenberg spin-1/2 model
, 2011 The effects of a magnetic field ($h$) and a space modulation ($\delta$) on the magnetic properties of a one dimensional antiferromagnetic-ferromagnetic Heisenberg spin-1/2 model have been studied by means of numerical exact diagonalization of finite size
Abouie, Jahanfar, Mahdavifar, Saeed
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Global stability, limit cycles and chaotic behaviors of second order interpolative sigma delta modulators [PDF]
, 2011 It is well known that second order lowpass interpolative sigma delta modulators (SDMs) may suffer from instability and limit cycle problems when the magnitudes of the input signals are at large and at intermediate levels, respectively.
Ho, Yuk-Fan +3 more
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Modeling and Simulation of Voltage Inverter with Sigma-Delta Modulation [PDF]
, 2017 Cílem diplomové práce je vytvořit modulační strategii využívající principu sigma-delta modulace. V úvodních teoretických pasážích práce jsou popsány principy a vlastnosti vybraných standardních metod řízení napěťových střídačů.
Kořený, Lukáš
core
FEBS Letters, EarlyView.Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura +2 more
wiley +1 more source
Low-Pressure Small MEMS Accelerometer Using Sigma-Delta Modulation
Proceedings, 2018 Encapsulation of MEMS accelerometers in vacuum is advantageous, since it allows integration with other sensors, leading to size and cost reduction. One technique to operate MEMS accelerometers in vacuum is the use of closed-loop Sigma-Delta modulation ...
Vasco Lima +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley +5 more
wiley +1 more source
IEEE Open Journal of Signal ProcessingThis article considers the context of multiuser massive MIMO downlink precoding with low-resolution digital-to-analog converters (DACs) at the transmitter. This subject is motivated by the consideration that it is expensive to employ high-resolution DACs
Wai-Yiu Keung, Wing-Kin Ma
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Analysis of Booth Multiplier based Conventional and Short Word Length FIR Filter
Mehran University Research Journal of Engineering and Technology, 2018 The optimized implantation of digital filters has remained one of the challenging tasks, for FPGA (Field- Programmable Gate Array) based system designers, due to the involvement of very complex circuitry for multiplication.
Aneela Pathan +3 more
doaj +1 more source
Analysis of the dynamics of an active control of the surface potential in metal oxide gas sensors [PDF]
, 2018 Postprint (author's final ...
Domínguez Pumar, Manuel +2 more
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Molecular Oncology, EarlyView.Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova +25 more
wiley +1 more source