Search results for " interference"
showing 10 items of 340 documents
A prototypal PCB board for the EMI characterization of SiC-based innovative switching devices
2020
In this paper, a preliminary PCB board for the electromagnetic interference (EMI) characterization of innovative silicon-carbide (SiC) based switching devices is presented. Packaging technological issues can determine hurdles in the high-frequency switching and high power regime where wide band gap semiconductors are intended today for Electric Vehicle (EV) applications. In particular, the parasitic inductances that emerge in such devices, must be assessed, by using e.g. EMI techniques. In this specific case, the EMI characterization is supposed to be carried out in a semi-anechoic chamber, available at the University of Palermo (UNIPA), to assess the electromagnetic disturbances according …
Novel nanocrystalline cores for EMI suppression in cables: characterization methodology and performance study
2021
El control de las interferencias electromagnéticas (EMI) en dispositivos electrónicos es un problema cada vez mayor al que se enfrentan los diseñadores para garantizar que los dispositivos cumplan con los requisitos de compatibilidad electromagnética (EMC) para operar simultáneamente sin inferir entre sí. Este hecho se debe a la tendencia hacia una mayor integración de componentes, la reducción del tamaño y grosor de las placas de circuito impreso (PCB) y la miniaturización de las carcasas de los dispositivos. Además, otros factores como el empleo de frecuencias de conmutación más altas en los convertidores de potencia y las velocidades de datos de comunicación en los circuitos digitales. C…
MiR-221 promotes stemness of breast cancer cells by targeting DNMT3b
2016
// Giuseppina Roscigno 1, 2 , Cristina Quintavalle 1, 2 , Elvira Donnarumma 3 , Ilaria Puoti 1 , Angel Diaz-Lagares 4 , Margherita Iaboni 1 , Danilo Fiore 1 , Valentina Russo 1 , Matilde Todaro 5 , Giulia Romano 6 , Renato Thomas 7 , Giuseppina Cortino 7 , Miriam Gaggianesi 5 , Manel Esteller 4 , Carlo M. Croce 6 , Gerolama Condorelli 1, 2 1 Department of Molecular Medicine and Medical Biotechnology, “Federico II” University of Naples, Naples, Italy 2 IEOS-CNR, Naples, Italy 3 IRCCS-SDN, Naples, Italy 4 Epigenetic and Cancer Biology Program (PEBC) IDIBELL, Hospital Duran I Reynals, Barcelona, Spain 5 Department of Surgical and Oncological Sciences, Cellular and Molecular Pathophysiology Lab…
Evidence of oxidative stress in very long chain fatty acid--treated oligodendrocytes and potentialization of ROS production using RNA interference-di…
2011
X-linked adrenoleukodystrophy (X-ALD) and pseudo neonatal adrenoleukodystrophy (P-NALD) are neurodegenerative demyelinating diseases resulting from the functional loss of the peroxisomal ATP-binding cassette transporter D (ABCD1) and from single peroxisomal enzyme deficiency (Acyl-CoA oxidase1: ACOX1), respectively. As these proteins are involved in the catabolism of very long chain fatty acids (VLCFA: C24:0, C26:0), X-ALD and P-NALD patients are characterized by the accumulation of VLCFA in plasma and tissues. Since peroxisomes are involved in the metabolism of reactive oxygen species (ROS) and nitrogen species (RNS), we examined the impact of VLCFA on the oxidative status of 158N murine o…
Lēcu virsmas atstarotās gaismas ietekme uz redzes kvalitāti
2021
arbs ir uzrakstīts latviešu valodā uz 39 lapaspusēm. Tas satur 13 attēlus, 4 tabulas, 32 atsauces uz literatūras avotiem. Maģistra darba mērķis ir dzidrināto pārklājumu un briļļu lēcu refrakcijas koeficienta ietekmes uz redzes asumu izpēte. Darba mērķa sasniegšanai 20 pacientiem tika piedāvāti redzes asuma pārbaudes testēšanas pētījumi: ar augstā indeksa lēci bez dzidrinātā pārklājuma, ar augstā indeksa lēci ar atstarojošo pārklājumu, ar lēcu ar refrakcijas koeficientu 1.5 un dzidrināto pārklājumu. Pēc darba rezultātiem tika secināts, ka starp rezultātiem, kas saņemti ar lēcu ar pārklājumu izmantošanu, īpašas starpības nav. Tomēr, augstā indeksa lēca bez papildus pārklājuma lielā mērā samaz…
Differential Effects of Interruptions and Distractions on Working Memory Processes in an ERP Study
2020
Interruptions (interfering stimuli to respond to) and distractions (interfering stimuli to be ignored) have been shown to negatively impact performance, particularly in tasks requiring working memory (WM). This study investigated how these two types of external interference affect task performance and attentional and WM processes as indexed by specific event-related potentials (ERPs) of the EEG. A Continuous Number Task (CNT) was applied, in which participants had to either decide whether the current number (condition without WM load) or the sum of the current and the preceding number (condition with WM load) was odd or even while responding to interlaced single letters (interruptions) or i…
Design and Assessment of Optimized EMI Filters for Avionic Applications
2018
This paper presents a procedure to design EMI filters to reduce the electromagnetic disturbances generated by electrical apparatus used in avionic environment. The method proposed can be useful to save weight and size of the attenuation systems, and keep their effectiveness in agreement with the standard requirements. A design of a set of different filters with different topological characteristics is presented for a case study about an electrical actuator used for an aircraft onboard application. Performances and reliabilities of the attenuation systems are assessed by suitable full compliance experimental tests.
INTERFERENCE PHENOMENA IN FOREIGN LANGUAGE LEARNING- SOME OBSERVATIONS FROM ROMANIAN-ENGLISH CONTACT
2012
Foreign language learning is the locus of varying degrees of interference from the learner’s first language (L1), the product of this influence being called interlanguage. As such, it is important to identify those areas of the L1 which could lead to negative transfers into the target language and thus result in imperfect learning. The present paper is concerned with English learning by speakers of Romanian, and analyses possible L1 retentions resulting from the use of English borrowings that diverge grammatically from their original counterparts. The particular cases described will be those of borrowed words which have undergone a process of conversion, and the use of bilingual verb phrase…
Do the benefits of polyandry scale with outbreeding?
2015
Lay Summary Mating can be both costly and dangerous. Despite this, females of many species typically mate more than once and with different males. We found that female seed bugs only benefit from mating with more than 1 male if one of her mates was a different species. Females needed only 1 mating with her own species to maximize her fitness. Thus, multiple mating may be adaptive in areas where the 2 species coexist.
Suppression and Replacement Gene Therapy for Autosomal Dominant Disease in a Murine Model of Dominant Retinitis Pigmentosa
2011
For dominantly inherited disorders development of gene therapies, targeting the primary genetic lesion has been impeded by mutational heterogeneity. An example is rhodopsin-linked autosomal dominant retinitis pigmentosa with over 150 mutations in the rhodopsin gene. Validation of a mutation-independent suppression and replacement gene therapy for this disorder has been undertaken. The therapy provides a means of correcting the genetic defect in a mutation-independent manner thereby circumventing the mutational diversity. Separate adeno-associated virus (AAV) vectors were used to deliver an RNA interference (RNAi)-based rhodopsin suppressor and a codon-modified rhodopsin replacement gene res…