279 research outputs found
Due voci di gentes romane
No full textNell’articolo si esaminano e notizie relative alle gentes Cincia e Cilnia quale esempio del Dizionario della gentilità romana, ormai in corso di stampa
“Io sono invero Kyrios del kosmos, il nomos, invece, lo è del mare”. Qualche riflessione sul “mare” in diritto romano,
No full text
Nutrients: The environmental regulation of cardiovascular gene expression
No full textThe complexity of nutrient-gene interactions has led to the development of a new branch in the nutrition sciences, the nutrigenomics. The individual susceptibility to nutrients based on environment → genotype → phenotype interplay makes this new research field extremely promising although complex. In this review, we highlight and examine recent findings and the most relevant hypotheses on the role of the diet in the onset and progression of cardiovascular diseases. The effect of unbalanced diets on the cardiovascular system is considered one of the most important risk factors both for ischemic and degenerative myocardial pathologies. The concept that nutrigenomics could help in improving public and personal health is becoming tangible indicating future directions for basic and applied research in the pathophysiology of cardiovascular disease. © Springer-Verlag 2007
Is a hydrolysable tannin extracted from chestnut wood efficacious against necrotic enteritis?
No full textA hydrolysable tannin extracted from chestnut
(SaviotaN®) was tested for efficacy in controlling
the proliferation of Clostridium perfringens in the
gut of broiler chickens challenged via oral gavage
first with coccidia (Eimeria tenella, Eimeria
acervulina, Eimeria maxima) at the age of 10
days, and then with Clostridium perfringens at
the age of 15 days. We randomly allocated 150
broiler chickens within 5 poultry isolators (30
birds each). Dietary treatments consisted of a
basal diet (C) composed of corn [575 g/kg on dry
matter (DM)] and soybean meal (100 g/kg DM),
barley bran (220 g/kg DM), corn gluten feed (30
g/kg DM), soybean oil (25 g/kg DM), vitamin
mineral premix (49.5 g/kg DM), and four other
diets obtained by adding chestnut tannin extract
(1.5, 3, 5, and 12 g/kg during week 1, 10.0 g/kg
during week 2, and 8.0 g/kg during the last two
weeks, respectively) to C. At the age of 20 days,
15 birds/group were euthanised and individually
examined for the level of gut infection by counting
Clostridium perfringens and macroscopic gut
lesions. Results demonstrated that chestnut tannin
gave significant results even at low concentration
levels in the feed (1.5 to 3.0 g/kg), but was
actually efficient in controlling necrotic enteritis
at levels ≥5.0 g/kg. The treatment (12.0 g/kg during
the first week and 8.0 g/kg during the last two
weeks of age) resulted very efficient in controlling
the proliferation of Clostridium perfringens
and in reducing the severity of gut damage compared
to the untreated infected group
Linear Non Linear Digital control for DC/DC Converters with fast transient response PARTE I
No full textThis article presents a digital control that improves the stability of the system, solves the problem of the limit cycle, shortens the recovery time and limits the overcoming of the rectified output voltage. Describes the linear digital nonlinear control function for DC / DC converters.
The simulation model in the mixed environment of matlab-simulink / active -hdl is described.
Preliminary results of the preliminary hardware test on a step-down-phase converter are presented and simulation and experimental results are also presented
Estimated requirements of net energy, digestible protein and NDF intake of Chianina young bulls from 400 kg liveweight to slaugter
No full textThree equations have been elaborated and proposed to predict the requirements of net energy and protein digestible in the intestine and NDF voluntary intake of growing young Chianina bulls, starting from 400 kg live weight.
The animals examined in the present study were 100 young Chianina bulls starting from about 400 kg live weight, at 10 months of age, up to the average slaughter weight of 800 kg at 20 months average age. The diet was based on hay and concentrates.
The equation for the prediction of net energy fits quite perfectly to another experimental equation formerly proposed by Giorgetti and is characterised by a very high value of the correlation coefficient for the regression comparison between observed and predicted figures (R-2=0.90). The statistical reliance degree of the PDIN prediction equation is lower, but still very good (R-2=0.75 between observed and predicted values), but that of the estimate of NDF daily intake resulted very poor (R-2=0.26 between observed and predicted values), probably due to the non homogeneity of the intake capacity of the 100 examined animals. The correlation between daily gains and the concentration of NDF in the diet DM results good (R-2=0.87), showing that young Chianina bulls take advantage of the diet fibre
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