Antimicrobial and beneficial properties of bacterial species isolated from phyllospheric microbiota

The use of Biocontrol Agents (BCAs) has gained attention from the scientific community during the last decades, driven by the need to seek sustainable and eco-friendly alternatives to confront plant pathogens in agriculture which cause significant loss in production.The phyllosphere is the habitat provided by the aboveground or aerial part of the plants (leaves, flowers, fruits), this is a very dynamic habitat with communities that can endure large changes in humidity, nutrition, radiation, etc. Research on phyllosphere has historically lagged behind, compared to the rhizosphere.Some bacteria in the plant’s microbiome play an important role in the functioning of plants by influencing their health and development protecting them against diseases by producing different secondary metabolites. In the present thesis, we focused on Bacillus velezensis SPL51, Bacillus subtilis STRP31 and Paenibacillus sp. PL91 bacteria isolated from tomato and lettuce phyllosphere with beneficial agricultural properties such as high antimicrobial activity against plant pathogen, plant growth promotion effect, and the ability to produce spores with strong resistance to adverse conditions, which provides convenience for formulation commercial uses

Energy and Cost savings by Using Lighting Controls in offices

CIBSE & SLL International Lighting Conferenc

Razvoj tehnologije Stirling sunčevog tanjura za buduću primjenu

The dish-Stirling technology for power generation, using a Stirling engine fed with a renewable energy such as solar, means a promising development regarding electricity generation. The dish-Stirling technology presents the highest efficiency, around 30%, in relation to other solar energy generation systems. However the technology status has not achieved enough advancement to be competitive with other renewable energy technologies. A state-of-the art review has been carried out in order to identify the developments needed to guarantee the feasibility of using the dish-Stirling technology. These are, on the one hand the system hybridization, in such a way that guarantees continuous operation, implying amortization improvement and on the other hand the thermal storage, providing system operation with stored energy during some periods such as transients. In this paper, a complete review of literature concerning the state-of-the-art and developments of dish-Stirling technology has been carried out, presenting the most outstanding issues considered for future implementation.Tehnologija Stirling sunčevog tanjura za proizvodnju električne energije, koristeći Stirling-ov motor napajan iz obnovljivog izvora energije kao što je sunce, predstavlja obećavajući razvoj u pogledu proizvodnje električne energije. S učinkovitošću od oko 30% tehnologija Stirling sunčevog tanjura jest najučinkovitiji solarni sustav za proizvodnju elekrične energije. Međutim, sadašnji napredak tehnologije nije dovoljan kako bi se postigla konkurentnost s drugim obnovljivim izvorima energije. Pregled trenutnog stanja tehnolgije je proveden kako bi se utvrdio potreban razvoj koji bi jamčio izvedivost korištenja tehnologije Stirling sunčevog tanjura. To su, s jedne strane sustav hibridizacije, osiguravanje njegovog kontinuiranog rada, poboljšanje amortizacije te s druge strane skladištenje topline, pod uvjetom osiguranja rada sustava u prijelaznim razdobljima sa skladištenom energijom. U ovom radu proveden je kompletan pregled literature o trenutnom stanju i razvoju tehnologije Stirling sunčevog tanjura, te navodi najistaknutija pitanja za njihovu buduću primjenu