Search results for "Farm"
showing 10 items of 3554 documents
Electrospinning of α,β-poly(N-2-hydroxyethyl)-dl-aspartamide-graft-polylactic acid to produce a fibrillar scaffold
2010
Abstract α,β-Poly( N -2-hydroxyethyl)- dl -aspartamide grafted with polylactic acid (PHEA- g -PLA) is a biocompatible and biodegradable amphiphilic copolymer that has been already employed to prepare a drug delivery system. In this study we have prepared for the first time a fibrillar scaffold from PHEA- g -PLA by the electrospinning of a solution of this copolymer in a mixture of N , N -dimethyl formamide (DMF) and acetone (80:20 vol/vol). The average diameter and the morphology of electrospun fibers were detected by scanning electron microscopy. Chemical degradation studies in phosphate buffer solution pH 7.4 have been performed until 15 days in order to obtain a preliminary information a…
Antitumor Effect of Glandora rosmarinifolia (Boraginaceae) Essential Oil through Inhibition of the Activity of the Topo II Enzyme in Acute Myeloid Le…
2022
It was previously shown that the antitumor and cytotoxic activity of the essential oil (EO) extracted from the aerial parts of Glandora rosmarinifolia appears to involve a pro-oxidant mechanism in hepatocellular carcinoma (HCC) and in triple-negative breast cancer (TNBC) cell lines. Its most abundant compound is a hydroxy-methyl-naphthoquinone isomer. Important pharmacological activities, such as antitumor, antibacterial, antifungal, antiviral and antiparasitic activities, are attributed to naphthoquinones, probably due to their pro-oxidant or electrophilic potential; for some naphthoquinones, a mechanism of action of topoisomerase inhibition has been reported, in which they appear to act b…
No ķirurģiskā materiāla izdalīto Klebsiella spp. baktēriju β-laktamāžu producēšanas noteikšana
2021
Klebsiella pneumoniae un Klebsiella oxytoca ir Gram-negatīvas nosacīti patogēnas baktērijas, kas izraisa urīnceļu, plaušu u.c. orgānu infekcijas. Klebsiella spp. raksturo plaša rezistence pret β-laktāmu antibakteriālajiem līdzekļiem, kur klīniski nozīmīgāka ir paplašināta darbības spektra β-laktamāze (ESBL). Darbā apkopota literatūra par Klebsiella spp. morfoloģiju, infekcijām, antibakteriālu terapiju un tās rezistences mehānismiem. Praktiskajā daļā tika iegūti Klebsiella spp. antibakteriālas jutības dati, pamatojoties uz disku difūzijas testiem (DDT), E-testiem, un arī lietojot molekulārbioloģiskās izmeklēšanas metodes: DNA STRIP® tehnoloģiju. Pētījums tika veikts Rīgas Traumatoloģijas un …
ION MOBILITY STUDIES ON SODIUM-BIS (2- ETHYLHEXIL)SULFOSUCCINATE (AOTNa) AGGREGATES
2012
The supramolecular charged aggregates formed during ESI ionization of AOTNa solutions under critical micelle concentration have been studied thorough ion mobility experiments. In particular, positively charged clusters with several charge states, ranging from +1 to +4, have been investigated. It has been found that, despite to previous investigations (Siuzdak et al. 1995, Nohara et al. 1998), specific ionic aggregates with a peculiar cross section are observed. Indeed a single drift time is observed for each charged aggregate. Using both calculated cross section and experimental calibration curves the experimental cross section of the observed cation has been determined. It is worth noting …
2030 for the EU: Real steps of change? A short commentary on Biodiversity Strategy and Farm to Fork
2020
A short commentary on the EU 2030 Biodiversity Strategy and the Farm to Fork Strategy. The Covid-19 pandemic adds other similarly contradictory stances: it is an occasion to change the world for the better, but it also forces us to focus on the here and now to save lives and jobs. The Strategy, whose subtitle is Bringing nature back into our lives, seems to speak to people in lock-down, building on their sense of suffocation from strict indoor living and on the beautiful and nourishing memories of moments spent in nature. However, the Strategy also, and mostly, speaks to industries and entrepreneurs who are projected to the post-Covid time to bring business back into their lives. Regardless…
Habitat preferences of Bonelli's Eagles Aquila fasciata in Sicily
2012
Capsule For breeding, areas dominated by extensive agricultural and rugged Mediterranean landscapes are preferred; maintenance of habitat heterogeneity and extensive agriculture are key for the conservation of this eagle. Aims To model breeding habitat preferences of Bonelli's Eagles Aquila fasciata in Sicily, where the last viable population still remains in Italy, in order to identify the most important habitats for conservation. Methods Pairs were monitored between 1990 and 2010. A case-control design through glms was used at two spatial scales: landscape and home-range. Variables included topographic, climatic, land-use, road and descriptors of habitat heterogeneity. Information-based c…
Furostanol saponins and ecdysones with cytotoxic activity from Helleborus bocconei ssp. intermedius
2009
Two furostanol saponins helleboroside A (1) and helleboroside B (2) were isolated from the methanol extract of Helleborus bocconei Ten. subsp. intermedius (Guss.) Greuter and Burdet, along with the furospirostanol saponin 4 and two ecdysones: ecdysterone (5) and polypodyne B (6). Compound 2 was enzymatically hydrolysed to give product 3. The biological activity of all compounds was tested against rat C6 glioma cells showing a significant cytotoxicity for compounds 3, 4 and 6. Copyright © 2009 John Wiley & Sons, Ltd.
The Value of Organic plus. Analysing Consumers’ Preference for Additional Ethical Attributes of Organic food Products
2023
AbstractOrganic Plus attributes strengthen the sustainability of the organic products and differentiate them from the ‘conventionalized’ organic ones. Products with Organic Plus attributes seem appreciated by organic consumers. However, research on consumers’ preference for Organic Plus is still scarce, leaving gaps in the understanding of the consumers’ characteristics of organic products with Plus attributes. In order to enrich the knowledge of consumers’ preference for organic products with Plus attributes, the present study aims to achieve three Objectives: (1) identifying which Plus attributes, among fair prices to local farmers, integration of people with disabilities and eco-friendli…
Pelagic food web as the basis of fisheries in Lake Tanganyika: A bioenergetic modeling analysis
2002
Fisheries in Lake Tanganyika, East Africa, are mainly based on two predominantly planktivorous clupeids (Stolothrissa tanganicae and Limnothrissa miodon) and a centropomid predator (Lates stappersi), caught with lift nets, purse seines, and beach seines by traditional, artisanal, and industrial fishers. The biological basis and sustainability of the present fisheries were assessed in a comprehensive project “Research for the Management of the Fisheries on Lake Tanganyika” in 1992–1998. Production in the whole lake was estimated for the entire pelagic food chain leading to the commercially important fish species. Preliminary calculations based on a constant production efficiency suggested th…
The Sicilian wild cabbages as biological resources: taxonomic update and a review on chemical constituents and biological activities
2020
Considering the growing interest that wild brassicas have as sources of bioactive molecules as well as a genetic resource, the authors review and update the taxonomy of Brassica sect. Brassica, limited to the native flora of Sicily, an island considered to be an active diversification center for the group of species of the aforementioned section. Regarding the taxonomic aspects, Brassica tardarae is here considered a subspecies of B. rupestris; the distinction at the subspe- cific level of B. raimondoi, a critical taxon included in B. incana, is also confirmed. In addition, two new subspecies are proposed, respectively in B. incana and B. rupestris. The taxonomic information relating to the…