Search results for "carrier"

Preparation of tungstophosphoric acid/cerium-doped NH2-UiO-66 Z-scheme photocatalyst: a new candidate for green photo-oxidation of dibenzothiophene a…

2021

International audience; The goal of this study was to introduce an effective visible-light induced photocatalytic system with a good ability for photocatalytic oxidative desulfurization (PODS) and denitrogenation (PODN) using molecular oxygen (O2) as an oxidant. In this regard, tungestophosphoric acid (PW12) was supported onto cerium-doped NH2-UiO-66 (PW12/Ce-NUiO-66) and employed for the photo-oxidation of dibenzothiophene (DBT) and quinoline (Qu). Herein, using cerium (Ce) as a “mediator” facilitated the separation of charge carriers, while NH2-UiO-66 remarkably enhanced the surface area with plentiful adsorption sites and shifted the adsorption edge of PW12to the visible region. The sum …

Podstawowe zagadnienia problematyki rekurencji treści cyfrowych

2018

Celem pracy jest wykazanie aktualnych problemów prawnych w związku z ewolucją dystrybucji treści cyfrowych oraz próbą wskazania możliwych innych kierunków zmian w podejściu do sposobu zakupu treści cyfrowej wraz z upowszechnieniem się novum w postaci rozproszonego konsensusu. Ten ostatni spowodował rozpowszechnienie się technologii łańcucha bloków, która wedle koncepcji wizjonerów ma w przyszłości pozwolić na rozproszone usługi hostingowe połączone z nowym podejściem do dystrybucji treści cyfrowych bez nośnika – zarówno dla konsumentów, jak i autorów zdigitalizowanych dzieł.

Concorsi interni e riparto di giurisdizione

2003

Il contributo analizza il problematico inquadramento sistematico dei concorsi riservati al personale interno per gli avanzamenti di carriera (progressioni verticali), con particolare riferimento alla tutela giurisdizionale, se riservata al giudice amministrativo ovvero, in linea con il processo di privatizzazione del pubblico impiego, al giudice ordinario.

Lo studio come lavoro

2010

Optimal Resource Allocation in Multi-Hop Networks: Contention vs. Scheduling

2014

CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is actually the most used method in ad-hoc networks for transmitting on a contending medium, even if it shows poor performance in presence of hidden nodes. To increase performance, we propose an algorithm that combines CSMA and TDMA (Time Division Multiple Access) approaches. The adopted solution consists of grouping contending nodes in non-interfering subsets and granting a different numbers of time slots to different groups, while using the CSMA to manage medium access among nodes belonging to the same subset. An optimization procedure to assign the time slots to each subset of nodes and to find an equilibrium between contention …

Gli studenti stranieri nelle università italiane

2021

La popolazione dei giovani di origine immigrata iscritti all’università è in costante crescita nel contesto italiano, risultato di fattori di spinta e di attrazione complessi, legati tanto al processo di internazionalizzazione del sistema universitario italiano quanto alla storia migratoria del Paese, in cui i figli degli immigrati sono adesso in età per iscriversi all’università. Coesistono, infatti, due realtà della presenza straniera profondamente diverse nel sistema dell’istruzione post-secondaria. La prima è costituita dagli studenti stranieri in senso stretto, espressione di una mobilità internazionale per motivi di studio, che accedono all’università con un diploma conseguito all’est…

Development of New Targeted Inulin Complex Nanoaggregates for siRNA Delivery in Antitumor Therapy.

2021

Here, a novel strategy of formulating efficient polymeric carriers based on the already described INU-IMI-DETA for gene material whose structural, functional, and biological properties can be modulated and improved was successfully investigated. In particular, two novel derivatives of INU-IMI-DETA graft copolymer were synthesized by chemical functionalisation with epidermal growth factor (EGF) or polyethylenglycol (PEG), named INU-IMI-DETA-EGF and INU-IMI-DETA-PEG, respectively, in order to improve the performance of already described “inulin complex nanoaggregates” (ICONs). The latter were thus prepared by appropriately mixing the two copolymers, by varying each component from 0 to 100 wt%…

Maturation of Epidermal Langerhans Cells In Vitro Is Accompanied by Downregulation of 4F2 (CD98) as Determined by Differential Display

1998

Following short-term culture, Langerhans cells mature morphologically and functionally into potent immunostimulatory cells. As regulation of gene expression accompanies this maturation process, it is likely that differentially expressed genes are involved in the maturation events. Using the recently described method of differential display, we generated cDNA expression patterns starting with mRNA of murine epidermal Langerhans cells isolated either directly (fLC) or following 3 d cultivation (cLC). Five hundred putative differentially expressed cDNA fragments were recovered from the gel. For a part of the fragments differential expression was confirmed by dot blot and Southern hybridization…

A fluorescence study of the loading and time stability of doxorubicin in sodium cholate/PEO-PPO-PEO triblock copolymer mixed micelles

2019

Abstract Hypothesis Doxorubicin hydrochloride (DX) is one of the most powerful anticancer agents though its clinical use is impaired by severe undesired side effects. DX encapsulation in nanocarrier systems has been introduced as a mean to reduce its toxicity. Micelles of the nonionic triblock copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) (PEO-PPO-PEO), are very promising carrier systems. The positive charge of DX confines the drug to the hydrophilic corona region of the micelles. The use of mixed micelles of PEO-PPO-PEO copolymers and a negatively charged bile salt should favour the solubilization of DX in the apolar core region of the micelles. Experiments We st…

ALS-RELATED FUS PROTEIN IS MISLOCALIZED TO CYTOPLASM AND RECRUITED INTO STRESS GRANULES IN FIBROBLASTS OF ASYMPTOMATIC FUS P525L MUTATION CARRIERS

Symptoms onset in Amyotrophic Lateral Sclerosis (ALS) occur when over 70% of motor neurons is already lost, suggesting a relatively long pre-symptomatic phase. The description of several genes linked to ALS (e.g., SOD1, FUS, TARDP, C9orf72) has now allowed identification of pre-symptomatic carriers. These pre-symptomatic (or even preclinical) carriers can be followed up with the aim to identify the very early clinical disease-related changes or a valuable biomarker. These efforts seem at present the best approach for the implementation of an early symptomatic therapy or for the disease prevention. In this work, we studied the expression of FUS protein in cultured skin fibroblasts from pre-s…