Bar-Ilan University

About: Bar-Ilan University is a education organization based out in Ramat Gan, Israel. It is known for research contribution in the topics: Population & Poison control. The organization has 12835 authors who have published 34964 publications receiving 995648 citations. The organization is also known as: Bar Ilan University & BIU.

Application of a quartz-crystal microbalance to measure ionic fluxes in microporous carbons for energy storage

Abstract: Conventional electroanalytical and structure-analysis techniques provide limited information about ionic fluxes in electrochemical systems. A quartz crystal microbalance is now used as a gravimetric probe of the concentration and compositional changes in microporous activated carbon.

Attachment theory and group processes: the association between attachment style and group-related representations, goals, memories, and functioning.

Abstract: Four studies examined attachment-style differences in group-related cognitions and behaviors. In Studies 1-2, participants completed scales on group-related cognitions and emotions. In Studies 3-4, participants were divided into small groups, and their performance in group tasks as well as the cohesion of their group were assessed. Both attachment anxiety and avoidance in close relationships were associated with negative group-related cognitions and emotions. Anxiety was also related to the pursuit of closeness goals and impaired instrumental performance in group tasks. Avoidance was related to the pursuit of distance goals and deficits in socioemotional and instrumental performance. Group cohesion significantly moderated the effects of attachment anxiety. The discussion emphasizes the relevance of attachment theory within group contexts.

The Pushes and Pulls of Close Relationships: Attachment Insecurities and Relational Ambivalence

Abstract: Attachment theorists have emphasized that attachment-anxious individuals are ambivalent in their relational tendencies, wishing to be close to their relationship partners but also fearing rejection. Here we report 6 studies examining the contribution of attachment anxiety and experimentally induced relational contexts (both positive and negative) to explicit and implicit manifestations of (a) attitudinal ambivalence toward a romantic partner and (b) motivational ambivalence with respect to the goals of relational closeness and distance. Attachment-anxious individuals exhibited strong attitudinal ambivalence toward a romantic partner, assessed by both explicit and implicit measures. They also exhibited strong motivational ambivalence regarding closeness (both explicit and implicit), and this motivational conflict was intensified in relational contexts that encouraged either approach or avoidance tendencies. Participants who scored relatively high on avoidant attachment proved to be implicitly ambivalent about distance issues but mainly in negative relational contexts. Several alternative interpretations of the results were considered and ruled out.

Efficient protocols for set intersection and pattern matching with security against malicious and covert adversaries

Abstract: In this paper we construct efficient secure protocols for set intersection and pattern matching. Our protocols for securely computing the set intersection functionality are based on secure pseudorandom function evaluations, in contrast to previous protocols that used secure polynomial evaluation. In addition to the above, we also use secure pseudorandom function evaluation in order to achieve secure pattern matching. In this case, we utilize specific properties of the Naor-Reingold pseudorandom function in order to achieve high efficiency. Our results are presented in two adversary models. Our protocol for secure pattern matching and one of our protocols for set intersection achieve security against malicious adversaries under a relaxed definition where one corruption case is simulatable and for the other only privacy (formalized through indistinguishability) is guaranteed. We also present a protocol for set intersection that is fully simulatable in the model of covert adversaries. Loosely speaking, this means that a malicious adversary can cheat, but will then be caught with good probability.

The potential of desferrioxamine-gallium as an anti-Pseudomonas therapeutic agent

Abstract: The opportunistic pathogen Pseudomonas aeruginosa causes infections that are difficult to treat by antibiotic therapy. This bacterium can cause biofilm infections where it shows tolerance to antibiotics. Here we report the novel use of a metallo-complex, desferrioxamine-gallium (DFO-Ga) that targets P. aeruginosa iron metabolism. This complex kills free-living bacteria and blocks biofilm formation. A combination of DFO-Ga and the anti-Pseudomonas antibiotic gentamicin caused massive killing of P. aeruginosa cells in mature biofilms. In a P. aeruginosa rabbit corneal infection, topical administration of DFO-Ga together with gentamicin decreased both infiltrate and final scar size by about 50% compared to topical application of gentamicin alone. The use of DFO-Ga as a Trojan horse delivery system that interferes with iron metabolism shows promise as a treatment for P. aeruginosa infections.