Recomendações para o cultivo da goiabeira no Rio Grande do Sul.

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Recomendações para produção de videiras americanas e híbridas para processamento na região de Pelotas.

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Propagação vegetativa de frutíferas de caroço por estacas herbáceas em escala comercial.

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The blockchain role in ethical data acquisition and provisioning

The collection of personal data through mobile applications and IoT devices represents the core business of many corporations. From one hand, users are losing control about the property of their data and rarely are conscious about what they are sharing with whom; from the other hand, laws like the European General Data Protection Regulation try to bring data control and ownership back to users. In this paper we discuss the possible impact of the blockchain technology in building independent and resilient data management systems able to ensure data ownership and traceability. The use of this technology could play a major role in creating a transparent global market of aggregated personal data where voluntary acquisition is subject to clear rules and some forms of incentives, making not only the process ethical but also encouraging the sharing of high quality sensitive data

Optimal constants for a nonlocal approximation of sobolev norms and total variation

We consider the family of nonlocal and nonconvex functionals proposed and investigated by J. Bourgain, H. Brezis and H.-M. Nguyen in a series of papers of the last decade. It was known that this family of functionals Gamma-converges to a suitable multiple of the Sobolev norm or the total variation, depending on the summability exponent, but the exact constants and the structure of recovery families were still unknown, even in dimension 1. We prove a Gamma-convergence result with explicit values of the constants in any space dimension. We also show the existence of recovery families consisting of smooth functions with compact support. The key point is reducing the problem first to dimension 1, and then to a finite combinatorial rearrangement inequality

Replica Field Theory for Deterministic Models (II): A Non-Random Spin Glass with Glassy Behavior

We introduce and study a model which admits a complex landscape without containing quenched disorder. Continuing our previous investigation we introduce a disordered model which allows us to reconstruct all the main features of the original phase diagram, including a low $T$ spin glass phase and a complex dynamical behavior.Comment: 35 pages with uu figures, Roma 102

Mycorrhizal activity and diversity in a long-term organic Mediterranean agroecosystem

In organic agriculture, soil fertility and productivity rely on biological processes carried out by soil microbes, which represent the key elements of agroecosystem functioning. Arbuscular mycorrhizal fungi (AMF), fundamental microorganisms for soil fertility, plant nutrition and health, may play an important role in organic agriculture by compensating for the reduced use of fertilizers and pesticides. Though, AMF activity and diversity following conversion from conventional to organic farming are poorly investigated. Here we studied AMF abundance, diversity and activity in short- and long-term organically and conventionally managed Mediterranean arable agroecosystems. Our results show that both AMF population activity, as assessed by the mycorrhizal inoculum potential (MIP) assay, the percentage of colonized root length of the field crop (maize) and glomalin-related soil protein (GRSP) content were higher in organically managed fields and increased with time since transition to organic farming. Here, we showed an increase of GRSP content in arable organic systems and a strong correlation with soil MIP values. The analysis of AMF spores showed differences among communities of the three microagroecosystems in terms of species richness and composition as suggested by a multivariate analysis. All our data indicate that AMF respond positively to the transition to organic farming by a progressive enhancement of their activity that seems independent from the species richness of the AMF communities. Our study contributes to the understanding of the effects of agricultural managements on AMF, which represent a promising tool for the implementation of sustainable agriculture

Online Resource to Promote Vocational Interests Among Job Seekers With Multiple Sclerosis: A Randomized Controlled Trial in Australia

© 2017 American Congress of Rehabilitation Medicine Objective: To provide a preliminary evaluation of the effectiveness of an online resource for job seekers with multiple sclerosis (MS). Design: Randomized controlled design. Setting: Community-dwelling cohort. Participants: Adults (N = 95) with relapsing-remitting or progressive MS were randomly assigned to one of two groups. Forty-five accessed an email delivered, 7 module resource, Work and MS, over a 4 week period. Waitlist control participants (n=50) were offered the opportunity to access Work and MS 4 weeks postenrollment. Main Outcome Measures: Primary outcomes focused on vocational interests (My Vocational Situation Scale) and self-efficacy in job-seeking activities (Job-Procurement Self Efficacy Scale). Secondary outcomes focused on perceived workplace difficulties (Multiple Sclerosis Work Difficulties Questionnaire [MSWDQ]), optimism (Life Orientation Test – Revised), and mood (Patient Health Questionnaire-9). Results: Intention-to-treat analyses revealed pre-post gains: participants who accessed Work and MS reported improved confidence in their career goals (My Vocational Situation Scale g=.55; 95% confidence interval [CI],.14–.96; P=.008) and positively reappraised potential workplace difficulties (MSWDQ g range,.42–.47; P range,.023–.042). The effect on job self-efficacy was not significant, but changed in the expected direction (g=.17; 95% CI, –.23 to.57; P=.409). Completer data revealed larger, significant effect estimates (g range,.52–.64; P range,.009–.035). Conclusions: Findings provide preliminary support for the utility of a job information resource, Work and MS, to augment existing employment services. The results also suggest the need to test employment-ready interventions in a larger study population. This might include the addition of online peer support to increase intervention compliance