Superheated drop as a neutron spectrometer

Superheated drops are known to vaporise when exposed to energetic nuclear radiation since the discovery of bubble chamber. As the degree of superheat increases in a given liquid, less and less energetic neutrons are required to cause nucleation. This property of superheated liquids are being utilised to develope the neutron spectromer. A new principle of neutron spectrometry using Superheated liquid are developed and the developed principle has been tested by Am-Be neutron source.Comment: 9 pages, 8 figures. accepted in Nucl.Instru.MethA,200

Muscle memory: The inimitable feel of the record

Muscle Memory is a new record I have made in collaboration with pianist Matthew Bourne (playing Memorymoog), and trumpeter Graham South. Comprising two composed sound pieces, it was released on vinyl in 2017. The pieces are structured around recordings made in the houses of each collaborator, documenting the act of listening to records. The compositions include conversation between composer and collaborators, samples of music from records heard/discussed, improvised instrumental sections, and electronically manipulated materials. Muscle Memory has since been presented to a number of audiences attending ‘living-room’ listening sessions - held in small, intimate and domestic spaces across the UK. Participative listening of this type is understood through Simon Frith and Christopher Small as an inclusive, collaborative, compositional action. The tactility (Mike D’Errico) and ‘objectness’ (David Grubbs) of records is also of importance. This text is a document of that listening experience

Quantum Phase Slips: from condensed matter to ultracold quantum gases

Quantum phase slips are the primary excitations in one-dimensional superfluids and superconductors at low temperatures. They have been well characterized in most condensed-matter systems, and signatures of their existence has been recently observed in superfluids based on quantum gases too. In this review we briefly summarize the main results obtained on the investigation of phase slips from superconductors to quantum gases. In particular we focus our attention on recent experimental results of the dissipation in one-dimensional Bose superfluids flowing along a shallow periodic potential, which show signatures of quantum phase slips.Comment: 10 pages, 6 figure

Editorial: Special issue “molecules from side reactions”

Organic synthesis is a powerful tool that allows researchers to express their scientific creativity [...

Associazione indipendente tra la riserva di flusso coronarico e le pressioni di riempimento e il rilasciamento del ventricolo sinistro

Background: A cross-talk between coronary flow and left ventricular (LV) function is recognized. This study tested the hypothesis that impairment of coronary flow reserve (CFR) in arterial hypertension is associated with LV systolic and diastolic dysfunction, independently on abnormalities of LV geometry. Methods: We studied 59 newly diagnosed, never treated hypertensive patients, using transthoracic Doppler echocardiography, including pulsed Tissue Doppler of mitral annulus and CFR on left anterior descending artery (low dose dipyridamole). The study population was divided in 2 groups according to age-normalized relative wall thickness (RWTn): 36 with normal LV geometry (RWTn ≤ 0.41) and.23 patients with LV concentric geometry (RWTn > 0.41) Results: Patients with LV concentric geometry (RWTn > 0.41) had significantly lower midwall (but not endocardial) shortening, longer isovolumic relaxation time (IVRT), lower Tissue Doppler derived early diastolic velocity (Em), higher ratio of transmitral E velocity to Em and lower CFR than patients with normal LV geometry (RWTn ≤ 0.41). In the whole population lower CFR was significantly associated with lower midwall shortening and Em, longer IVRT and higher E/Em ratio. After controlling for heart rate, mean blood pressure and RWTn, only the relation of CFR with IVRT, Em and E/Em ratio remained significant. Conclusions: Reduced midwall mechanics is associated to lower CFR, a relation depending on LV concentric geometry. A reduced CFR is associated with both impaired relaxation and increased filling pressure, a relation that is independent on LV geometry and pressure load