52,509 research outputs found
Dignità umana, morale cattolica e legge dello Stato: alla ricerca di possibili convergenze
No full textInfluence of humic acids on laurel growth, associated rhizosphere microorganisms, and mycorrhizal fungi
No full textIncreasing concentrations of humic acids were tested in order to determine their effects on the microbial rhizosphere and the growth of laurel (Laurus nobilis L.). Plants that were treated with 300 mg kg-1 of humic acids had the heaviest weights of both fresh and dry shoots; however, doses of 3000 mg kg-1 were highly phytotoxic and inhibited the growth of laurel. Total aerobic bacteria and actinomycetes were stimulated by doses of 1500 and 3000 mg kg-1 of humic acids at the first harvest. Nevertheless, at the end of the experiment no significant differences were found among the different doses. The number of fungi living in the laurel rhizosphere was not affected by any concentration of humic acids. Vesicular-arbuscular mycorrhizal (VAM) colonization was only slightly affected by the addition of increasing concentrations of humic substances to the soil, while the hyphal growth of Glomus mosseae was reduced
You can get anything you want at Alice’s restaurant: l’ home restaurant tra libertà di iniziativa economica, tutela del consumatore e della concorrenza
No full textThe essay starts with a comparison between the different definitions of the concept of home restaurant proposed by experts, suppliers, home cookers, on-line platforms, and the one provided by a bill drafted during the XVII legislature.
The Author describes the activity of those who offer such kind of service in the market, proposing some reflections on the nature of such activity, on the necessity of ensuring food’s health standards, on consumer’s health and wealth, on the protection of competitors professional restaurant’s cookers (if they can be considered as such), on the mechanisms through which demand and offer match together through on-line platforms, social networks or apps.
These issues are investigated also through a constant reference to frequent praxis, interpretations and administrative provisions provided by the Ministry of the Economic Development, in order to underlines pro and cons of the Bill drafted by the Government.
At the same time, the essay offers also some comparative insights on the regulatory models provided (or voluntary not) by other legal systems
Trace contaminants in biogas: Biomass sources, variability and implications for technology applications
No full textBiogas represents a renewable and controllable energy source. Although predominantly composed of methane and carbon dioxide, it also contains various trace contaminants that can be detrimental to the technologies used for its conversion. The aim of this work is to comprehensively explore trace contaminants in biogas. The assessment employs a two-level approach: an extensive literature review on biogas trace contaminants, complemented with on-site analyses from real-scale biogas plants to enhance and validate the literature findings. The biogas contaminants – sulphur compounds, siloxanes, halocarbons and aromatic compounds – are quantified and categorised into four distinct groups: landfill gas, agricultural gas, gas derived from the organic fraction of municipal solid waste (OFMSW), and gas from wastewater (WWTP). This study also provides contaminant effects and required thresholds for different biogas conversion technologies, including internal combustion engines, upgrading to biomethane, and innovative solid oxide fuel cells (SOFCs). The two-level analysis reveals significant variability in contaminant levels across different biogas sources, with H2S being the most prevalent contaminant, averaging between 181 (WWTP) and 901 ppm (landfill gas). Other sulphur compounds show the highest average concentration in biogas from OFMSW (98 ppm), followed by agricultural and landfill gases. Siloxanes are typically more abundant in biogas from WWTP (2.55 ppm), while landfill gas exhibits the highest average concentrations of halocarbons and aromatic compounds (6 ppm and 109 ppm, respectively). Moreover, this study highlights the need for in-depth measurements of contaminants for highly sensitive technologies, such as SOFCs, to properly design tailored contaminant removal solutions
Accuracy of different dental implant impression techniques comparing different materials
No full textCommento dottrinale e giurisprudenziale agli artt. 4 e 5 della l. 12 giugno 1990, n. 146
No full textIl commento esamina la disciplina degli articoli della l. n. 146/1990 alla luce dei contributi dottrinali e giurisprudenzial
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