Results 91 to 100 of about 2,253,810 (318)

An investigation of potential applications of OP-SAPS: Operational Sampled Analog Processors [PDF]

open access: yes
The application of OP-SAP's (operational sampled analog processors) in pattern recognition system is summarized. Areas investigated include: (1) human face recognition; (2) a high-speed programmable transversal filter system; (3) discrete word (speech ...
Mcvey, E. S., Parrish, E. A.
core   +1 more source

Programmable microwave transversal filter using acousto-optic tunable filtering

open access: yesSPIE Proceedings, 2007
Electronically programmable, broadband analog Radio Frequency (RF) transversal filter architecture is proposed and implemented using an Acousto-Optic Tunable Filter and a Chirped Fiber Bragg Grating. Proof-of-concept filter two-tap notch filters are demonstrated with a tunable range of 2-8 GHz and notch depth of 35 dB.
Ghauri, Farzan N., Riza, Nabeel A.
openaire   +3 more sources

Down‐regulation of Shh in the hair follicles of mice during chemotherapy‐induced hair loss is mediated by the JAK/STAT1 signaling pathway

open access: yesFEBS Open Bio, EarlyView.
We found that during chemotherapy‐induced alopecia (CIA), Sonic hedgehog (Shh) expression significantly decreased in hair follicle Shh+ cells, whereas the Janus‐activated kinase/signal transducer and activator of transcription 1 (JAK/STAT1) signaling pathway was markedly activated.
Ruifang Fan   +6 more
wiley   +1 more source

Retinosis pigmentaria en baja visión Retinitis pigmentosa in low vision

open access: yesRevista Cubana de Oftalmología, 2011
Objetivo: Valorar el comportamiento oftalmológico de la retinosis pigmentaria en la consulta de baja visión del Instituto Cubano de Oftalmología "Ramón Pando Ferrer" en el año 2010.
Marilyn Linares Guerra   +5 more
doaj  

Dispersionless interleave filter based on transversal form optical filter

open access: yesElectronics Letters, 2002
A new interleave filter (IF) is proposed based on a transversal form optical filter. The filter was fabricated on a silica-based planar lightwave circuit (PLC) and it was demonstrated that the proposed filter functions extremely well as an interleave filter with a dispersionless characteristic.
T. Mizuno   +5 more
openaire   +1 more source

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

Perfil de los usuarios de drogas por vía parenteral que mantienen conductas de riesgo relacionadas con la inyección en Cataluña Characteristics of intravenous drug users who share injection equipment in Catalonia (Spain)

open access: yesGaceta Sanitaria, 2012
Objetivos: Estimar la prevalencia de las prácticas de riesgo directas e indirectas relacionadas con la inyección de drogas e identificar los factores asociados en los usuarios de drogas por vía parenteral (UDVP) en centros de reducción de daños en ...
Cinta Folch   +6 more
doaj  

High performance photonic microwave filters based on a 50GHz optical soliton crystal Kerr micro-comb

open access: yes, 2019
We demonstrate a photonic radio frequency (RF) transversal filter based on an integrated optical micro-comb source featuring a record low free spectral range of 49 GHz yielding 80 micro-comb lines across the C-band.
Chu, S. T.   +8 more
core   +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

Microglial dynamics and ferroptosis induction in human iPSC‐derived neuron–astrocyte–microglia tri‐cultures

open access: yesFEBS Open Bio, EarlyView.
A tri‐culture of iPSC‐derived neurons, astrocytes, and microglia treated with ferroptosis inducers as an Induced ferroptosis model was characterized by scRNA‐seq, cell survival, and cytokine release assays. This analysis revealed diverse microglial transcriptomic changes, indicating that the system captures key aspects of the complex cellular ...
Hongmei Lisa Li   +6 more
wiley   +1 more source

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