Results 91 to 100 of about 636,755 (342)

Metformin promotes mitochondrial integrity through AMPK‐signaling in Leber's hereditary optic neuropathy

open access: yesFEBS Open Bio, EarlyView.
Metformin mediates mitochondrial quality control in Leber's hereditary optic neuropathy (LHON) fibroblasts carrying mtDNA mutations. At therapeutic levels, metformin activates AMPK signaling to restore mitochondrial dynamics by promoting fusion and restraining fission, while preserving mitochondrial mass, enhancing autophagy/mitophagy and biogenesis ...
Chatnapa Panusatid   +3 more
wiley   +1 more source

A CFOA-Based Voltage-Mode Multifunction Biquadratic Filter and a Quadrature Oscillator Using the CFOA-Based Biquadratic Filter

open access: yesApplied Sciences, 2019
This paper proposes a new high-input impedance current feedback operational amplifier (CFOA)- based voltage-mode multifunction biquadratic filter and a voltage-mode quadrature oscillator using the proposed high-input impedance CFOA-based biquadratic ...
San-Fu Wang   +3 more
doaj   +1 more source

Evaluation of (1 + α) Fractional-Order Approximated Butterworth High-Pass and Band-Pass Filter Transfer Functions

open access: yes, 2018
This paper summarizes multiple cases of high-pass (HP) and band-pass (BP) analogue filter transfer functions with fractional order 1 < (1 + α ) < 2. All HP and BP transfer functions are evaluated against the magnitude characteristics of ideal Butterworth
D. Kubánek   +3 more
semanticscholar   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

CMOS RF first-order all-pass filter [PDF]

open access: yes, 2018
In this paper, a wide-band first-order voltage-mode all-pass filter is presented. Due to a simple structure and appropriate performance of the proposed all-pass filter, this filter achieves a flat group delay of over 60 ps with a pole/zero pair located ...
Aghazadeh, Seyed Rasoul   +3 more
core  

Dual-Band Tunable Recursive Active Filter

open access: yes, 2011
This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines.
Aznar Ballesta, Francisco   +3 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

On the Ideality of Filtering Techniques in the Business Cycle Analysis Under Conditions of European Economy

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015
The paper deals with the applications and comparison of various filtering techniques, which is an integral part of the business cycles identification and their further analysis.
Ladislava Issever Grochová   +1 more
doaj   +1 more source

Filtering Sinyal Suara Gitar Menggunakan Band Pass Filter [PDF]

open access: yesInfoTekJar (Jurnal Nasional Informatika dan Teknologi Jaringan), 2019
Pada bidang komunikasi bahwa sinyal suara asli tanpa derau (noise) dikatakan penting dikarenakan memberikan informasi dengan jelas, jika sinyal suara asli telah tercampur derau (noise) maka sinyal suara tersebut menjadi lemah dan akhirnya hilang/tidak berguna.
Adhif Rayana AR, Wiwid Andriani
openaire   +1 more source

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri   +7 more
wiley   +1 more source

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