Characterization of carrot root oil arising from supercritical fluid carbon dioxide extraction

Carrot root oil (SCO), obtained by supercritical fluid carbon dioxide (SC-CO2) extraction, was characterized and compared to a commercial carrot oil (MCO) and a virgin olive oil (VOO) (cv. Coratina). SCO showed much higher contents of carotenes, phenolics, waxes, phytosterols, and sesquiterpene and monoterpene volatiles. In SCO, the most prominent components present in the fully investigated analytical fractions (fatty acids, triglycerides, waxes, phytosterols, long-chain aliphatic alcohols, superior triterpene alcohols, and volatiles) were, respectively, linolenic acid, trilinolein, waxes C38, beta-sitosterol, campesterol and stigmasterol, 1-hexacosanol, 24-methylencycloartanol and cycloartenol, beta-caryophyllene, alpha-humulene, alpha-pinene, and sabinene. In VOO, the major constituents of the above analytical classes were, respectively, oleic acid, trilinolein, waxes C36, unsaturated volatile C6 aldehydes (trans-2-hexenal most markedly), and the same prominent sterols and superior alcohols found in SCO. In MCO, which also contained a proportion of unknown plant oil, several components showed magnitudes that were lower compared to SCO but higher with respect to VOO. The last had the aliphatic and triterpene alcohol concentration higher compared to that of both SCO and MCO. Several chemometric methods, applied to different analytical data sets, proved to be effective in grouping the three oil kinds.     

Diet composition of the Italian crested newt (Triturus carnifex) in structurally different artificial ponds based on stomach contents and stable isotope analyses

1. In order to evaluate the effects of ecological disturbances, such as climate change, human‐induced habitat modification, or species introduction, and in order to adopt appropriate management policies for their conservation, knowledge of the trophic ecology of protected or threatened species is crucial. The Italian crested newt, Triturus carnifex (Laurenti, 1768), is listed in annexes II and IV of the European Habitats Directive. For this species, changes in water quality and habitat loss represent major threats, potentially impairing its breeding and feeding activities.
2. Artificial aquatic habitats, such as cattle‐drinking pools, represent valuable refuges and suitable breeding sites for T. carnifex. The aim of this study was to determine the food niche of the Italian crested newt in these habitats, evaluating its prey selection strategy in relation to a range of environmental conditions and differing availability of resources. Stomach contents (indicative of short‐term diet) and δ¹³C and δ¹⁵N signatures of tails (indicative of medium‐term diet) of adult newts from three artificial ponds in central Italy, where traditional silvo‐pastoral activities are still important, were determined. Potential prey were also sampled and processed for stable isotope analysis.
3. Triturus carnifex, similar to other newt species, is an opportunistic predator, feeding on a wide variety of prey that includes terrestrial and aquatic macroinvertebrates. In particular, the opportunistic use of temporally available small zooplankton was identified from stomach contents analysis. Conversely, stable isotope analysis highlighted the consumption of larger, soft‐bodied prey that the stomach‐contents‐based approach underestimated. These included terrestrial oligochaetes, which turned out to be the most important and energy‐rich food source in the medium term.
4. These results emphasize the usefulness of combined approaches for studying the trophic ecology of salamanders and also highlight the importance of the integrated management of aquatic breeding habitats and neighbouring terrestrial habitats, as sources of food, for newt conservation.

     

Do Geographic Concentration and Vertically Related Variety Foster Firm Productivity? Micro‐Evidence from Italy

Using a large unbalanced panel dataset of more than 12,000 Italian manufacturing firms for the period 1999–2007, this paper investigates the role of geographic concentration and related variety on firms' total factor productivity (TFP). The main idea is that diversification—captured by a measure of vertically related variety—promotes firm innovativeness and, consequently, productivity, but when the technology has been consolidated, firms join specialized clusters that enhance efficiency. Our results suggest that the effect on firms' TFP of geographic concentration is stronger than that of related variety. We also confirm previous findings on the relevance of agglomeration forces for small firms compared with medium and large firms, where these agglomerative forces do not seem to influence TFP.     

Theoretical and Experimental Analysis of Spray Flow and Evaporation in Sprinkler Irrigation

This paper shows the main results,reached during the last three years ofresearch by this group, on sprinklerirrigation modeling and experimenting. Amathematical method based on the SecondPrinciple of Dynamics proves to fully matchthe results obtained by more complicatedmodels from other authors, but still needsfurther verification to determine aerialwater droplet evaporation, even if this nowhelps to confirm the relevance of airfriction in the process. The experimentalactivity performed also shows its use inhelping towards a fuller understanding ofwater waste in sprinkler irrigationpractice.     

Iron partitioning in Earth's mantle: toward a deep lower mantle discontinuity

We measured the spin state of iron in ferropericlase (Mg0.83Fe0.17)O at high pressure and found a high-spin to low-spin transition occurring in the 60- to 70-gigapascal pressure range, corresponding to depths of 2000 kilometers in Earth's lower mantle. This transition implies that the partition coefficient of iron between ferropericlase and magnesium silicate perovskite, the two main constituents of the lower mantle, may increase by several orders of magnitude, depleting the perovskite phase of its iron. The lower mantle may then be composed of two different layers. The upper layer would consist of a phase mixture with about equal partitioning of iron between magnesium silicate perovskite and ferropericlase, whereas the lower layer would consist of almost iron-free perovskite and iron-rich ferropericlase. This stratification is likely to have profound implications for the transport properties of Earth's lowermost mantle.     

Assessing the impact of East Coast Fever immunisation by the infection and treatment method in Tanzanian pastoralist systems

A field trial was carried out in a Maasai homestead to assess the impact of East Coast Fever (ECF) immunisation by the infection and treatment method (ITM) with the Muguga Cocktail on the occurrence of this disease in Tanzanian pastoralist systems. These data were further used in partial budgeting and decision analysis to evaluate and compare the value of the control strategy. Overall, ITM was shown to be a cost-effective control option. While one ECF case was registered in the immunised group, 24 cases occurred amongst non-immunised calves. A significant negative association between immunisation and ECF cases occurrence was observed (p≤0.001). ECF mortality rate was also lower in the immunised group. However, as anti-theilerial treatment was given to all diseased calves, no significant negative association between immunisation and ECF mortality was found. Both groups showed an overall similar immunological pattern with high and increasing percentages of seropositive calves throughout the study. This, combined with the temporal distribution of cases in the non-immunised group, suggested the establishment of endemic stability. Furthermore, the economic analysis showed that ITM generated a profit estimated to be 7250 TZS (1 USD=1300 TZS) per vaccinated calf, and demonstrated that it was a better control measure than natural infection and subsequent treatment.     

Analyzing Strategies to Enhance Small and Low Intensity Managed Forests Certification in Europe using SWOT-ANP

Small forest holders own approximately 55 % of European forests. Forest certification can effectively support smallholders in environmental and socio-economic terms and increasing their access to certification is a priority for all the certification systems. With the aim of gaining a better insight into the smallholder certification scenario, this study identifies and analyzes the main factors influencing the diffusion of the Forest Stewardship Council (FSC) smallholder certification in Europe. Potential strategies to help FSC meet the requirement of smallholders—and as a consequence enhance their access to certification—are pointed out. First, European FSC certification reports were reviewed; second, a Strengths, Weaknesses, Opportunities and Threats-Analytic Network Process (SWOT-ANP) analysis was applied. The review of the reports shows that FSC certification allows achieving substantial environmental and social improvements, making a valuable contribution to ordinary management. The SWOT-ANP analysis reveals a common awareness that the FSC scheme has been customized for the small-scale forestry over the last years—indeed, the certificates issued annually are increasing—but the need to make further progress and to provide adequate technical-managerial support to smallholders during all certification phases still emerge. Results from the economic analysis highlight that certification may be a good opportunity to increase commercial relationships and exchanges, by facilitating the entrance of certified products to dedicated high-value markets. Findings also highlight social and environmental shortcomings concerning forest workers conditions and management practices.     

Ultrasound-guided femoral and obturator nerves block in the psoas compartment in dogs: anatomical and randomized clinical study

Objective

To evaluate intraoperative and postoperative efficacy of ultrasound (US)-guided femoral (FN) and obturator (ON) nerves block, in the iliopsoas muscle compartment (IPM), using an in-plane technique.

The EEG as an aid to the topographical diagnosis of a cerebral lesion in a puppy: neurosurgical treatment and the post-operative EEG-clinical course

A report is given of a laceration-contusion injury with haemorrhage in the left motor area of the brain and contralateral hemiplegia in a 45-day-old pup which resulted from a depressed fracture of the cranial vault and which was treated surgically. The neurosurgical therapy was made possible by the topographical diagnosis of the lesion and this, as well as the timing of the interference, was based largely on the EEG examination. The postoperative course is described with emphasis on the development of the clinical picture and EEG patterns. The case illustrates the value of the EEG in canine neurosurgery. Résumé. On rapporte 1'observation d'un chiot de 45 jours, victime d'une fracture par enfoncement de la voûte cranienne ayant provoqué une plaie contuse et ouverte avec hémorragie de l'aire motrice gauche du cerveau et hémiplégie controlatérale. Le traitement chirurgical mis en ceuvre a pu être eflfectué, grâce au diagnostic topographique des lésions qui fut basé essentiellement sur les données de l'encéphalogramme, tout comme le choix du moment de l'intervention. On décrit les suites opératoires en insistant sur les modifications cliniques et électroencéphalographiques. Ce cas illustre la valeur de l'électroencéphalogramme en matière de neurochirurgie canine. Zusammenfassung. Es wird über eine Lazerations-Contusions-Verletzung mit Hämorrhagie im linken motorischen Gebiet des Gehirns und contralaterale Hemiplegie bei einem 45 Tage alten Hund berichtet, die im Gefolge einer eingedrückten Fraktur des Schadelgewölbes auftraten und chirurgisch behandelt wurden. Die neurochirurgische Therapie wurde durch die topographische Diagnose der Läsion ermöglicht, und diese sowie die zeitliche Festlegung des Eingriffs beruhten grösstenteils auf der EEG-Untersuchung. Der postoperative Verlauf wird mit besonderer Berück-sichtigung der Entwicklung des klinischen Bildes und der EEG-Resultate beschrieben. Der Fall zeigt den Wert des EEG in der Neurochirurgie des Hundes.