The Higgs decay rate to two photons in a model with two fermiophobic-Higgs doublets

We consider a three Higgs doublet model with an $S_3$ symmetry in which beside the SM-like doublet there are two fermiophobic doublets. Due to the new charged scalars there is an enhancement in the two-photon decay while the other channels have the same decay widths that the SM neutral Higgs. The fermiophobic scalars are mass degenerated unless soft terms breaking the $S_3$ symmetry are added.Comment: typos were corrected, the figures have been modified and the conclusions were increased. Still contains 15 pages, 2 figure

Edge-colouring and total-colouring chordless graphs

A graph $G$ is \emph{chordless} if no cycle in $G$ has a chord. In the present work we investigate the chromatic index and total chromatic number of chordless graphs. We describe a known decomposition result for chordless graphs and use it to establish that every chordless graph of maximum degree $\Delta\geq 3$ has chromatic index $\Delta$ and total chromatic number $\Delta + 1$. The proofs are algorithmic in the sense that we actually output an optimal colouring of a graph instance in polynomial time

Complexity of colouring problems restricted to unichord-free and \{square,unichord\}-free graphs

A \emph{unichord} in a graph is an edge that is the unique chord of a cycle. A \emph{square} is an induced cycle on four vertices. A graph is \emph{unichord-free} if none of its edges is a unichord. We give a slight restatement of a known structure theorem for unichord-free graphs and use it to show that, with the only exception of the complete graph $K_4$, every square-free, unichord-free graph of maximum degree~3 can be total-coloured with four colours. Our proof can be turned into a polynomial time algorithm that actually outputs the colouring. This settles the class of square-free, unichord-free graphs as a class for which edge-colouring is NP-complete but total-colouring is polynomial

Aspiring to modernize: Current trends in state surveillance in Portugal

In various countries throughout the world, the bureaucratic development of the modern states has been accompanied by the creation of identification systems whose purpose is to collect, store and manage personal and biometric data about its citizens. In this chapter we analyse the establishment of a national DNA database for criminal and civil forensic identification and the intention of implementing CCTV (closed-circuit television) in open areas on a national scale. The comprehensive analysis of these processes in the Portuguese context is especially relevant due mainly to the fact that, on the one hand, we are considering a country with a long history of a political dictatorship in the twentieth century (1928- 1974) characterized by political and police repression and censorship and, on the other hand, a newly democratic state divided between the quest for modernization and uniformity by following the paths of surveillance implemented in other European countries (considered to be more advanced) while at the same time struggling with its own cultural and social specificities marked by scarce economic resources and low criminality rates. From our point of view, it is intriguing that Portugal has a long and social history of citizens' apparently passive compliance with the state's requirements of collecting diverse sorts of personal identification data and, at the same time, both national and international studies suggest that public confidence in the state, the police and the justice system is weak in European terms (Cabral et al. 2003). In fact, this is one of the countries in which the majority of respondents consider that the institutions that are most affected by corruption in the country are politics, business, the police and the judiciary (Transparency International 2020).info:eu-repo/semantics/acceptedVersio

Actin assembly ruptures the nuclear envelope by prying the lamina away from nuclear pores and nuclear membranes in starfish oocytes.

The nucleus of oocytes (germinal vesicle) is unusually large and its nuclear envelope (NE) is densely packed with nuclear pore complexes (NPCs) stockpiled for embryonic development. We showed that breakdown of this specialized NE is mediated by an Arp2/3-nucleated F-actin 'shell' in starfish oocytes, in contrast to microtubule-driven tearing in mammalian fibroblasts. Here, we address the mechanism of F-actin-driven NE rupture by correlated live-cell, super-resolution and electron microscopy. We show that actin is nucleated within the lamina sprouting filopodia-like spikes towards the nuclear membranes. These F-actin spikes protrude pore-free nuclear membranes, whereas the adjoining membrane stretches accumulate NPCs associated with the still-intact lamina. Packed NPCs sort into a distinct membrane network, while breaks appear in ER-like, pore-free regions. Thereby, we reveal a new function for actin-mediated membrane shaping in nuclear rupture that is likely to have implications in other contexts such as nuclear rupture observed in cancer cells

Programa de sincronização do estro com cloprostenol em caprinos: dose efeito apos administração intramuscular superficial vulvar.

Noventa e nove cabras foram inseminadas artificialmente(IA) durante 12 dias com semen congelado. Nos primeiros seis dias, 50 cabras(50,5%) foram IA sob estro natural(controle), enquanto que as 49 restantes(49,5%) receberam o cloprostenol como segue: T1- 100mg intramuscular(IM) e T2, T3 e T4- 100, 50 e 25mg intramuscular superficial vulvar(IMSV). a taxa de nao-retorno ao estro aos 42 dias(TNR42) e a fertilidade ao parto nao apresentaram diferencas significativas entre os tratamentos e entre estes e o controle, ficando em 41,7 e 8,3%, 50,0 e 40,0%, 54,6 e 18,2%, 36,4 e 0,0% e 64,0 e 24,0% respectivamente, para T2, T3, T4 e controle. Durante os 12 dias do programa, 95,0% das cabras apresentaram estro, sendo qeu a TNR42 foi de 55,3% e a fertilidade ao parto de 27,7% Verificou-se que a via IMSV e uma alternativa efetiva na aplicacao do cloprostenol

Determinação dos custos e da viabilidade econômica da inseminação artificial em caprinos.

Os eventos reprodutivos naturais podem ser alterados objetivando facilitar o manejo e aumentar a produtividade dos rebanhos. Neste contexto, a manipulacao do ciclo estral dos caprinos envolve tecnicas de controle artificial da reproducao, que permitem reduzir a mao-de-obra despendida com a observacao do estro e concentrar, num curto periodo de tempo, elevado numero de femeas em estro. Entretanto, os metodos de controle do estro e da ovulacao sao de elevado custo e os seus resultados, em fertilidade, sao variaveis e, frequentemente, baixos. Este trabalho tem por objetivo determinar os custos de diferentes metodos para o emprego da inseminacao artificial em caprinos, bem como estabelecer os possiveis beneficios desta biotecnica

Influência do refluxo da dose inseminante sobre a fertilidade de cabras Moxotó inseminadas artificialmente.

Este trabalho objetivou verificar a influencia das variaveis condicao reprodutiva (nulipara vs pluripara) e local de deposicao do semen sobre a ocorrencia de refluxo da dose inseminante de 0,5 ml, bem como verificar seu efeito sobre a fertilidade e prolificidade em cabras Moxoto. A condicao reprodutiva nao influenciou o refluxo, apesar de tender ser maior nuliparas que em pluripparas (37,50 vs 29,41% respect.) O sitio de deposicao do semen teve influencia significativa sobre o refluxo. A medida que se aprofundava a IA, diminuia-se o refluxo. A fertilidade ao parto e a prolificidade, nao foram influenciadas, apesar da tendencia de maiores indices para inseminacoes sem refluxo (53,85 e 1,43 vs 65,52% e 1,47 para fert. ao parto e prolificidade em IAs com refluxovs sem refluxo respect.). Doses de menores volumes devem ser utilizadas para IA em cabras Moxoto. [Influence of semen reflow on the fertility of Moxoto goats artificially inseminated]