Phase Transitions in Multicomponent String Model

We propose a one-dimensional model of a string decorated with adhesion molecules (stickers) to mimic multicomponent membranes in restricted geometries. The string is bounded by two parallel walls and it interacts with one of them by short range attractive forces while the stickers are attracted by the other wall. The exact solution of the model in the case of infinite wall separation predicts both continuous and discontinuous transitions between phases characterised by low and high concentration of stickers on the string. Our model exhibits also coexistence of these two phases, similarly to models of multicomponent membranes.Comment: letter, 8 pages, 3 figure

Contextual classification of multispectral image data

There are no author-identified significant results in this report

Khat-chewing, Moral Spacing and Belonging: Sociological Insights into the Cultural Space of the mafrish in the Leisure Lives of Older and Middle-aged British-Somali Males

This paper explores the relationship between khat-chewing and feelings of collective sociality amongst older and middle-aged men living in Britain's Somali diaspora. The research's core investigates the feeling of moral connectivity, a sense of belonging with others based around a shared reading of Somali-British identity. Here, the paper explores how the leisure practice of khat-chewing in the space of the mafrish symbolises this sense of belonging through promoting conventional understandings of Somaliness, connected to traditional readings of masculinity and identity. While such leisure is understood to offer a site of collective belonging for the older and middle-aged men who chew khat, it is also explored how khat-chewing creates conflicts, particularly amongst those who question the 'imagined community' constructed in such spaces. The analyses highlight how this leisure practice fractures families and the broader community, instigating a feeling of cultural dissonance amongst women and some youth, problematising the cultural foundations of identity and community constructed in khat-chewing sessions

Accurate prediction of gene feedback circuit behavior from component properties

A basic assumption underlying synthetic biology is that analysis of genetic circuit elements, such as regulatory proteins and promoters, can be used to understand and predict the behavior of circuits containing those elements. To test this assumption, we used time‐lapse fluorescence microscopy to quantitatively analyze two autoregulatory negative feedback circuits. By measuring the gene regulation functions of the corresponding repressor–promoter interactions, we accurately predicted the expression level of the autoregulatory feedback loops, in molecular units. This demonstration that quantitative characterization of regulatory elements can predict the behavior of genetic circuits supports a fundamental requirement of synthetic biology

Solutions to the Jaynes-Cummings model without the rotating-wave approximation

By using extended bosonic coherent states, the solution to the Jaynes-Cummings model without the rotating-wave approximation can be mapped to that of a polynomial equation with a single variable. The solutions to this polynomial equation can give all eigenvalues and eigenfunctions of this model with all values of the coupling strength and the detuning exactly, which can be readily applied to recent circuit quantum electrodynamic systems operating in the ultra-strong coupling regime.Comment: 6 pages,3 figure

Molecular electric dipole moments: from light to heavy molecules using a relativistic VQE algorithm

The quantum-classical hybrid Variational Quantum Eigensolver (VQE) algorithm is recognized to be the most suitable approach to obtain ground state energies of quantum many-body systems in the noisy intermediate scale quantum era. In this work, we extend the VQE algorithm to the relativistic regime and carry out quantum simulations to obtain ground state energies as well as molecular permanent electric dipole moments of single-valence diatomic molecules, beginning with the light BeH molecule and all the way to the heavy radioactive RaH molecule. We study the correlation trends in these systems as well as assess the precision in our results within our active space of 12 qubits

Dielectric Investigation in Binary Mixtures Involving a Nuclear extractant-Di-Isobutyl Ketone (DIBK) and Nonpolar Solvents

Individualmente, las construcciones verdes han demostrado contribuir a un ambiente más sostenible. En conjunto, los edifici os verdes en un contexto urbano pueden ayudar a mitigar desafíos sociales y ambientales provenientes de un crecimiento proyectado exponencial de las ciudades, que incluye contaminación, degradación de ecosistemas, pobreza e inequidad social. Resulta entonces esencial buscar oportunidades que promuevan prácticas de construcción sostenible con impactos positivos tanto sobre los ocupantes de los edificios y su entorno inmediato como sobre la calidad urbano-espacial de la ciudad, especialmente en cuanto a sus condiciones sociales y ambientales. El presente artículo propone una serie de incentivos para promover y reforzar el desarrollo responsable del entorno construido apuntando a no generar cargas económico-financieras para la ciudad. Considerando tanto las condiciones urbanas existentes como las deseadas e identificando áreas específicas que se verían beneficiadas por desarrollos sostenibles, se proponen y definen incentivos —particularmente estructurales y sociales— en términos de alcance y de ubicación sugerida dentro de la Ciudad de Buenos Aire