Storage and Retrieval of a Microwave Field in a Spin Ensemble

We report the storage and retrieval of a small microwave field from a superconducting resonator into collective excitations of a spin ensemble. The spins are nitrogen-vacancy centers in a diamond crystal. The storage time of the order of 30 ns is limited by inhomogeneous broadening of the spin ensemble.Comment: 4 pages + supplementary material. Submitted to PR

Integral Field Spectroscopy of the inner kpc of the elliptical galaxy NGC 5044

We used Gemini Multi-Object Spectrograph (GMOS) in the Integral Field Unit mode to map the stellar population, emission line flux distributions and gas kinematics in the inner kpc of NGC 5044. From the stellar populations synthesis we found that the continuum emission is dominated by old high metallicity stars ($\sim$13 Gyr, 2.5Z$\odot$). Also, its nuclear emission is diluted by a non thermal emission, which we attribute to the presence of a weak active galactic nuclei (AGN). In addition, we report for the first time a broad component (FWHM$\sim$ 3000km$s^{-1}$) in the H$\alpha$ emission line in the nuclear region of NGC 5044. By using emission line ratio diagnostic diagrams we found that two dominant ionization processes coexist, while the nuclear region (inner 200 pc) is ionized by a low luminosity AGN, the filamentary structures are consistent with being excited by shocks. The H$\alpha$ velocity field shows evidence of a rotating disk, which has a velocity amplitude of $\sim$240kms$^{-1}$ at $\sim$ 136 pc from the nucleus. Assuming a Keplerian approach we estimated that the mass inside this radius is $1.9\times10^9$ $M_{\odot}$, which is in agreement with the value obtained through the M-$\sigma$ relation, $M_{SMBH}=1.8\pm1.6\times10^{9}M_{\odot}$. Modelling the ionized gas velocity field by a rotating disk component plus inflows towards the nucleus along filamentary structures, we obtain a mass inflow rate of $\sim$0.4 M$_\odot$. This inflow rate is enough to power the central AGN in NGC 5044.Comment: 16 pages, 12 figures, accepted by MNRA

First insights on the differential expression of adaptive candidate genes among contrasting pathotypes of Hemileia vastatrix

info:eu-repo/semantics/publishedVersio

Electron spin resonance detected by a superconducting qubit

A new method for detecting the magnetic resonance of electronic spins at low temperature is demonstrated. It consists in measuring the signal emitted by the spins with a superconducting qubit that acts as a single-microwave-photon detector, resulting in an enhanced sensitivity. We implement this new type of electron-spin resonance spectroscopy using a hybrid quantum circuit in which a transmon qubit is coupled to a spin ensemble consisting of NV centers in diamond. With this setup we measure the NV center absorption spectrum at 30mK at an excitation level of \thicksim15\,\mu_{B} out of an ensemble of 10^{11} spins.Comment: 6 pages, 4 figures, submitted to PR

An Overview of the Mechanisms Involved in Coffee-Hemileia vastatrix Interactions: Plant and Pathogen Perspectives

Coffee is one of the most consumed beverages in the world. It is also one of the most globally traded commodities. Coffee leaf rust (CLR), caused by the biotrophic fungus Hemileia vastatrix, is the most important disease affecting Arabica coffee growing worldwide, leading to significant yield losses if no control measures are applied. A deep understanding of the complex mechanisms involved in coffee-H. vastatrix interactions, such as the pathogen variability and the mechanisms governing plant resistance and susceptibility, is required to breed efficiently for durable resistance and design new approaches for crop protection. Here we summarize our current understanding across multiple areas related to pathogen infection, variability and candidate effectors, breeding for disease resistance, and the various components of the coffee immune system, by reviewing a comprehensive body of research on CLR and the advances recently made. We also update information about the defense responses activated by the application of plant resistance inducers, a promising alternative to fungicides in the control of CLR. Moreover, we identify and discuss future directions for further researchinfo:eu-repo/semantics/publishedVersio

A high genomic variability is found among Hemileia vastatrix pathotypes

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Seleção de primers para o uso de RAPD na análise de diversidade genética em babaçu (Orbignya ssp. Mart.).

Entre as especies de palmeiras exploradas na atividade extrativista brasileira destaca-se o babaçu (Orbignya ssp. Mart), a mais rica do ponto de vista economico, pois e aproveitada por inteiro. Palmeira oleaginosa, o babacu e de grande valor industrial e comercial e e encontrado em maiores formacoes naturais nos estados do Maranhao e Piaui. Atualmente e uma das alternativas promissoras para produzir o biodiesel, combustivel biodegradavel derivado de fontes renovaveis

Utilização de primers RAPD para estudo de diversidade genética de acessos de babaçu (Orbignya phalerata Mart) coletados de diferentes regiões.

A caracterização genética é importante para os programas de conservação de recursos genéticos vegetal, pois avalia a distância entre as populações em estudo e pode auxiliar na escolha das espécies a serem utilizadas na conservação mediante a estimativa de índices de similaridade entre os indivíduos analisados. Esse trabalho teve como objetivo avaliar a variabilidade genética de acessos de babaçu (Orbignya phalerata Mart.) do banco de germoplasma da Embrapa Meio-Norte, oriundos de Tocantinópolis, Balsas, Teresina, Ubajara e Ipú por meio de marcadores RAPD (Polimorfismo de DNA amplificado ao acaso). A amplificação das amostras de DNA de cada material foi feita via PCR (Random Amplified Polymorphic DNA), as reações foram preparadas em volume final de 20?l, 1X [20Mm Tris-HCL ph 8,0; 0,1Mm EDTA; 1Mm DTT; 50% (v/v) glicerol]; MgCl2 1,5Mm; dNTPs 250mM de primer, 1U de Taq DNA Polymerase (REAL TAQ). Foi feita uma seleção de 5 primers (M16, M20, A03, A05, A15) dos 22 testados dos quais apresentaram bandas polimórficas indicando a existência de variabilidade genética entre os acessos utilizados