No abstract

Java plum (Syzygium cumini L. Skeels) originates from Asia and has adapted very well to soil conditions and climate in Brazil, becoming spontaneous in the Northeast region. Still, there is no large commercial production in the country, since information related to planting, plant management, post-harvest management, and fruit processing is limited and vague. The production of quality seedlings depends on several factors, and the composition of the substrates is a factor of great importance, because the germination of the seeds, the beginning of the roots and the rooting are directly linked to the constitution of the substrate. The experiment was conducted in a greenhouse at the Federal Institute of Education, Science and Technology of the Tocantins, at a city of Gurupi/TO. For this, Java plum seeds were used directly removed from the fruits, which were collected in the same period. The substrates used were: Washed Sand; Black Soil; Black Soil + Worm Humus + Commercial Substrate and Commercial Substrate + Washed Sand + Pine Bark, in the presence and absence of mucilage. The highest values of root length and length of shoot, in the presence and absence of mucilage, were obtained in the substrates of BS (10 and 13 cm) (8.7 and 9.3 cm), BS + WH + CS (9.3 and 12.4 cm) (8.2 and 9.5 cm) and CS + WS + PB (9 and 11 cm) (8.6 and 10.6 cm), respectively. Regarding the first emergency count and seedling emergence, once again the CS + WS + PB (20 and 56.2%) (51.2 and 90%), in the presence and absence of mucilage, respectively. It was concluded that the removal of the mucilage in Java plum seeds provided better performance in all substratum and the commercial substrate + washed sand + pine bark provided greater viability and vigor.

Fungi of the genus Trichoderma are important microorganisms for increasing plant growth. However, few studies have evaluated the potential of volatile compounds produced by the fungus Trichoderma spp. and it's potential as promoters and beneficiaries with respect to maize cultivation. Thus, this work aimed to evaluate the efficiency of volatile compounds produced by Trichoderma spp. and their potential for morphophysiological improvement in the initial growth of corn crops. The experiment was conducted in a factorial scheme (2x6+1), arranged in a completely randomized design, with two evaluation times (7 and 15 days after emergence (DAE) and five Trichoderma spp. isolates (plus one control). The isolates were classified as the following species and identified with the following codes: UFT-25: Trichoderma harzianum; UFT-37: Trichoderma pinnatium; UFT-57: Trichoderma virens; UFT-201: Trichoderma asperellum and UFT-204: Trichoderma longibrachiatum. The volatile compounds produced by Trichoderma spp. and inoculated in culture medium present in each experimental unit without direct contact with the roots of the plants, promoted an increase mass production and changed morphology and physiology, especially plant height, leaf area, absolute and relative growth rate, Falker chlorophyll index, instantaneous carboxylation efficiency (RuBisCo), and net photosynthesis rate

O malware é um software o qual tem como principal objetivo acessar um dispositivo alheio sem permissão explícita de seu proprietário. Os antivírus constituem o mecanismo mais popular quanto à detecção de malwares. Os antivírus comerciais têm como estratégia aguardar que algum usuário seja infectado e em sequência denuncie um comportamento anômalo de seu dispositivo, para que, então, a fabricante do antivírus possa tomar providências. Então, visando suprir as limitações dos antivírus comerciais, o trabalho proposto cria um antivírus capaz de identificar, preventivamente, o modus operandi de uma aplicação maliciosa. O antivírus proposto emprega inteligência artificial e consegue detectar um aplicativo mal-intencionado antes mesmo dele ser executado pelo usuário. Em média, o antivírus inteligente criado consegue distinguir os aplicativos malwares dos benignos em 98,13% dos casos.