Search results for "26"

A validated multi-scale model of a novel electrodialytic acid-base flow battery

2020

Electrical energy storage is crucial for a deeper penetration of intermittent renewable energies, e.g. solar and wind. The Acid/Base Flow Battery (AB-FB) is a novel, sustainable, environmental-friendly storage technology with high energy density1. The process is based on reversible electrodialytic techniques that convert the electrical energy in the chemical energy associated to pH gradients and vice versa. The bipolar membrane electrodialysis process operates in the charge phase, while the bipolar membrane reverse electrodialysis in the discharge phase. The stack consists of repetitive units, called triplets, made up of an anion-exchange membrane, a bipolar membrane, and a cation-exchange …

MAGNETIC RESONANCE IMAGING–GUIDED FOCUSED ULTRASOUND THALAMOTOMY IN PATIENT WITH TREMOR COMBINED WITH PARKINSONISM: RETREATMENT AFTER BENEFIT DECAY

2019

Background In recent years, transcranial Magnetic Resonance-guided Focused UltraSounds (tcMRgFUS) treatments for functional neurological disorders are giving a new thrust to the field of therapeutic brain lesioning. This technique has been proven safe and effective in selected patients. Here we present the case of a patient affected by tremor combined with parkinsonism who underwent a second tcMRgFUS thalamotomy because of relapsing tremor after a few months from the first tcMRgFUS treatment. Materials and Methods A 72-year-old, right-handed man, who came to our observation because of a disabling tremor affecting mainly his upper right limb and refusing any invasive surgical procedure. His …

Educación para la paz con perspectiva de género e intercultural. El caso "Amealco de Bonfil" (México)

2019

Aviopasažieru tiesību aizsardzība Eiropas parlamenta un padomes regulā Nr. 261/2004

2016

Bakalaura darba tēma: “Aviopasažieru tiesību aizsardzība Eiropas Parlameta un Padomes regulā Nr.261/2004” mūsdienās ir aktuāla, ņemot vērā strauji pieaugošo ceļotāju skaitu, kas izvēlas tieši gaisa transportu par ātrāko un ērtāko veidu ceļošanai. Papildus saistībā ar augsto aviopakalpojumu pieprasījumi ir augušu to gadījumu skaits, kad aviopasažierim pret to gribu atsaka iekāpšanu reisā, lidojums kavējas vai lidojums atceļas. Tādēļ pētnieciskā darba mērķis ir izpētīt Aviopasažieru regulas nodrošinātās tiesības aviopasažieriem, Aviopasažieru regulas piemērojamības apjomu un ierobežojumus, Aviopasažieru regulas mijiedarbību ar citiem normatīviem aktiem, un izpētīt Aviopasažieru regulas priekš…

Gene expression in TGFbeta-induced epithelial cell differentiation in a three-dimensional intestinal epithelial cell differentiation model

2006

Abstract Background The TGFβ1-induced signal transduction processes involved in growth and differentiation are only partly known. The three-dimensional epithelial differentiation model, in which T84 epithelial cells are induced to differentiate either with TGFβ1 or IMR-90 mesenchymal cell-secreted soluble factors, is previously shown to model epithelial cell differentiation seen in intestine. That model has not been used for large scale gene expression studies, such as microarray method. Therefore the gene expression changes were studied in undifferentiated and differentiated three-dimensional T84 cultures with cDNA microarray method in order to study the molecular changes and find new play…

Cathodal occipital tDCS is unable to modulate the sound induced flash illusion in migraine

2019

Migraine is a highly disabling disease characterized by recurrent pain. Despite an intensive effort, mechanisms of migraine pathophysiology still represent an unsolved issue. Evidence from both animal and human studies suggests that migraine is characterized by hyperresponsivity or hyperexcitability of sensory cortices, especially the visual cortex. This phenomenon, in turn, may affect multisensory processing. Indeed, migraineurs present with an abnormal, reduced, perception of the Sound-induced Flash Illusion (SiFI), a crossmodal illusion that relies on optimal integration of visual and auditory stimuli by the occipital visual cortex. Decreasing visual cortical excitability with transcrani…

Regulation of physiological differentiation in Nonomuraea sp. ATCC 39727

2014

The Actinomycete Nonomuraea produces the glycopeptide A40926, precursor of dalbavancin, a novel lipoglycopeptide homologous to vancomycin that could be used against emerging resistant Gram-positive bacteria. The A40926 biosynthetic gene cluster (dbv), which consists of 37 genes, encodes two regulators, Dbv3 (LuxR-like) and Dbv4 (StrR-like), as well as the response regulator (Dbv6) and the sensor-kinase (Dbv22) of a putative two-component system. Previous work demonstrated a positive role of Dbv4 in antibiotic production by activating the transcription of 13 dbv genes; up to now no role was assigned to Dbv3, Dbv6 and Dbv22. In addition, an IclR-like protein is thought to be involved in dbv4 …

A luminal glycoprotein drives dose-dependent diameter expansion of the Drosophila melanogaster hindgut tube

2012

An important step in epithelial organ development is size maturation of the organ lumen to attain correct dimensions. Here we show that the regulated expression of Tenectin (Tnc) is critical to shape the Drosophila melanogaster hindgut tube. Tnc is a secreted protein that fills the embryonic hindgut lumen during tube diameter expansion. Inside the lumen, Tnc contributes to detectable O-Glycans and forms a dense striated matrix. Loss of tnc causes a narrow hindgut tube, while Tnc over-expression drives tube dilation in a dose-dependent manner. Cellular analyses show that luminal accumulation of Tnc causes an increase in inner and outer tube diameter, and cell flattening within the tube wall,…

Graphic analysis of geometric tiles patterns. The complex of Shaykh ‘Abd Al-Samad At Natanz

2020

The complex of ‘Abd al-Samid at Natanz, (end of the first decade of the 14th century) includes several buildings: a four-iwan mosque, an octagonal sanctuary, a minaret, and a mosque from the 1930s fronted by a fourteenth-century portal (pīshṭāq). The portal, the only remains of a khanqah, occupies the western end of the southern façade. It takes the form of an iwan, covered in a rich variety of patterns of colourful glazed tile and unglazed carved terracotta. It is adorned by a majestic muqarnas vault of six rows ending at the top with a starry motif. Each element that constitutes the muqarnas is also covered with tiles of different patterns that alternate, both in the main and in the conne…

Helicoid and Architectural application

2012

Questo articolo è un risultato parziale di una ricerca riguardante la rappresentazione di superfici complesse in geometria descrittiva. La padronanza e l’abilità nell’uso delle diverse tecniche di rappresentazione, consente di raggiungere risultati che altrimenti non sarebbero perseguibili. La Scuola di Disegno di Ingegneria, dell’Università di Palermo si è da sempre fatta promotrice della scienza della rappresentazione attraverso la sperimentazione di tecniche semplificative ed innovative della geometria descrittiva applicata all’architettura e all’ingegneria. In particolar modo, in questo lavoro, si riporta lo studio di una superficie complessa quale è l’elicoide che trova larga applicazi…