Search results for "GRAS"
showing 7 items of 727 documents
Evaluación preclínica de la toxicidad retiniana en la administración intravítrea de ácido docosahexaenoico en modelo experimental de conejo
2013
Objetivo: Evaluar la toxicidad retiniana a corto plazo de la administración intravítrea de una dosis única de ácido docosahexaenoico (DHA) en un modelo experimental de conejo. Material y métodos: Dieciséis conejos albinos Nueva Zelanda fueron seleccionados para este estudio toxicológico preclínico. Se prepararon seis concentraciones de DHA (Brudy Laboratorios, Barcelona, España): 10mg/50μl, 5mg/50μl, 2'5mg/50μl, 50μg/50μl, 25μg/50μl, 5μg/50μl. Cada concentración fue inyectada por vía pars plana en inyección intravítrea en el ojo derecho de dos conejos. La solución vehículo se inyectó en el ojo derecho de cuatro animales que se consideraron el grupo control. Se evaluó la seguridad retiniana …
Energy efficient model for biogas production in farm scale
2011
Energy efficient solutions for six farm biogas production was found by calculating mass and energy balance in different scenarios. Raw materials in biogas production were cow manure and grass silage that were produced in these farms. There were calculated mass and energy balances on average for one year biogas prouduction that consisted of grass silage production, raw material transportation and biogas production in the biogas plant. In addition, direct greenhouse gases from biogas production were estimated. The direct mass and energy flows were calculated. It turned out that one input energy unit can produce 5.0 to 5.5 energy units as heat and electricity. Biogas reactor consumed heat from…
Semi-natural habitats in boreal Europe: a rise of a social-ecological research agenda
2021
The European continent contains substantial areas of semi-natural habitats, mostly grasslands, which are among the most endangered habitats in Europe. Their continued existence depends on some form of human activity, for either production or conservation purposes, or both. We examined the share of semi-natural grasslands within the general grassland areas in boreal Europe. We reviewed research literature across the region to compile evidence on semi-natural grasslands and other semi-natural habitats, such as wooded pastures, in respect to a range of topics such as ecology, land-use change, socioeconomics, and production. We also explored drivers of the research agenda and outlined future re…
An evaluation of cool season turfgrassess in order to identify the species and varieties most suitable for the Mediterranean environment
2004
The cultivars of cool season Graminae species diffusely used to establish turfgrasses, are grown in northern areas of Europe. The aim of the research described in this paper was to identify the turfgrass species and cultivars most suitable for the Mediterranean environment. The trial was carried out in 1999 and 2000 at the experimental farm “Parco d’Orleans” belonging to the Department A.C.E.P. of University of Palermo. During the trial sixty different cultivars of cool season turf species were compared – 20 cultivars of Festuca arundinacea Schreb., 20 cultivars of Poa pratensis L., and 20 cultivars of Lulium perenne L. The main biometric and qualitative parameters examined were ground cove…
Biogas production from high-yielding energy crops in boreal conditions
2013
Acute and subchronic phytotoxicity of volatile fatty acids (VFAs)
2008
Lauksaimniecības marginalizācijas ietekme uz aizsargājamo zālāju saglabāšanos Latvijā
2018
Maģistra darba mērķis - noskaidrot, kāda ir lauksaimniecības marginalizācijas ietekme uz aizsargājamo zālāju saglabāšanos Latvijā. Pētījums aptver visu Latviju. Izmantoti dabisko zālāju izplatības dati uz 2015. gadu un dati par lauksaimniecības zemju apsaimniekošanu 2017.gadā, kā arī augšņu kvalitātes dati. Datu analīze veikta 5 x5 km tīkla šūnā, analīzei izmantojot aprakstošo statistiku (Manna-Vitnija U-tests) un veikta daudzfaktoru regresijas analīze ar Tweedie modeļa datu sadalījumu. 2015.gadā Latvijā aizsargājamie zālāji aizņēma 0,77 % (50 156 ha) no valsts teritorijas. Bieži sastopamie biotopi valstī aizņem lielāko platību - 41 169 ha, bet retie un kompleksie biotopi aizņem, attiecīgi,…