651 research outputs found
Paesaggio funzionale della Sila Grande. Analisi fitosociologica e geosinfitosociologica
No full textScopo della tesi è stato quello di fare fronte a problematiche di carattere applicativo relative alla
gestione del territorio e alla conservazione della biodiversità utilizzando i metodi di analisi del
paesaggio vegetale attraverso gli approcci della sinfitosociologia.
Come area di studio è stata scelta la Sila Grande (Calabria), per la quale è stata avviata una
esaustiva ricerca bibliografica e reperiti i dati cartografici. I dati spaziali e i diversi tematismi sono
stati organizzati in un SIT e si è proceduto con una prima segmentazione (individuazione della
tessere ambientale) basata sulle caratteristiche geomorfologiche, geologiche, uso del suolo,
bioclima etc.
E’ stata effettuata un’analisi delle comunità vegetali montane, basata su 1047 rilievi fitosociologici
(di cui 554 originali) allo scopo di investigare i fattori paleogeografici, ecologici e antropici che
influenzano la flora e la vegetazione.
I dati provenienti dalla letteratura e da indagini di campo (1998-2013) sono stati analizzati
criticamente per chiarire la posizione sin tassonomica dei principali tipi di vegetazione. Sono
proposti 26 nuovi syntaxa (associazioni e sub associazioni) e viene presentato uno schema sin
tassonomico aggiornato. Querco-Fagetea e Molinio-Arrhenetheretea sono le classi più
rappresentate nell’area a causa dei fattori bioclimatici. Le comunità igrofile ((Isoeto-Nanojuncetea,
Nardetea strictae, Scheuchzerio-Caricetea fuscae, Montio-Cardaminetea and Littorelletea
uniflorae) hanno una significativa importanza biogeografia grazie ad un ricco gruppo di specie
boreali. Questa “impronta nordica” della flora, vegetazione e paesaggio è particolarmente
interessante e le sue peculiarità sono analizzate dal punto di vista ecologico e biogeografico. Gli
elementi mediterranei prevalgono nei prati aridi e negli arbusteti. Vengono affrontati alcuni
problemi sulle dinamiche della vegetazione come il ruolo delle pinete e le loro relazioni con le
faggete, cercando di dare spunti per le strategie di conservazione e gestione
Determination of new welfare and stress indicators on cattle and pig farms based on previously published studies
No full textIn recent years, numerous papers have been published that consider indicators of the welfare and stress of the
animals on cattle and pig farms to improve their health and productivity. These indicators are mostly
determined in numerous international projects and published in indexed journals and proceedings from
international symposia. Their usefulness in on-farm assessments of animal welfare and stress is generally
well recognized. In the assessments of the welfare and stress of the animals in different systems of rearing
and accommodation, the need to determine new welfare and stress indicators on cattle and pig farms was
observed. The paper discusses the determination of new indicators of animal welfare and stress on cattle and
pig farms based on analysis of previously published studies which include the most important papers in
indexed journals and proceedings from international symposia that discussed the existing indicators. The
analysis of the results of those studies will be used to determine the main characteristics of the existing new
welfare and stress indicators on cattle and pig farms with a focus on their applicability. The results,
discussions and conclusions in those papers will be used to generate ideas to define new welfare and stress
indicators of the animals on cattle and pig farms
Determination of new biosecurity indicators on cattle and pig farms based on published studies
No full textIn recent years, numerous papers have been published that consider indicators of cattle and pig farms
biosecurity with the aim of improving it, and therefore their health and productivity. These indicators were
presented in international projects published in indexed journals, as well as proceedings from international
symposia. On-farm assessments usability of farm production biosecurity is generally well recognized. In the
assessments of the farm biosecurity in different systems of rearing and accommodation, the need to
determine new indicators in cattle and pig production was observed and discussed, based on a meta-analysis
of previously published studies which include the most important papers in indexed journals and proceedings
from international symposia that discussed the existing indicators. The analysis of the results of those studies
will be used to determine the main characteristics of the existing new farm biosecurity indicators on cattle
and pig farms with a focus on their applicability. The results, discussions and conclusions of those papers
will be used to generate ideas to define biosecurity indicators on cattle and pig farms
Mastitis makes changes in the blood antioxidant enzyme activity during the transition period of dairy cows: Part II
No full textDuring the transition period in dairy cows, significant metabolic changes occur, potentially leading
to oxidative stress. Early postpartum is also the riskiest period due to the increased susceptibility of
dairy cows to mastitis. This study aimed to assess the enzymatic antioxidant status by analyzing the
activity of superoxide dismutase (SOD) and glutathione peroxidase (GPX) in blood obtained from
cows with mastitis and comparing it with samples from healthy cows. The two years prospective
study was carried out to assess the changes occurring in the activity of antioxidant enzymes SOD
and GPX in blood serum in three physiological periods: the dry period 21 days before calving, the
period from the beginning of lactation until the 21st day in lactation and period from the 22nd to the
42nd day in lactation. All cows were allocated in groups regarding the season years of calving.
Categorisation of the observed population was done following screening for mastitis using udder
clinical examination, the California Mastitis Test, and bacteriological culturing. The groups included
healthy cows, those with abnormal milk secretion (AMS), and cows with intramammary infection
(IMI). Enzyme activity was assessed in blood serum using spectrophotometric methods. The
physiological stages in the transition period when blood samples were taken, showed a statistically
significant influence (p<0.001) on SOD and GPX activity in blood serum. There were statistically
significant positive correlations between the activity of GPX and SOD in blood serum. Health
disorders of the mammary gland showed a statistically significant influence on GPX activity in blood
serum (p<0.05), but there wasn’t a statistically significant influence on SOD activity in blood serum.
The findings suggest that maintaining a balanced diet with sufficient antioxidants and managing
environmental stressors can mitigate oxidative stress during the transition period, also reducing the
risk of mastitis in early lactatio
The happy Bulgarian family
No full textFrom left to right, last row to first row: Ilka Antcheva, Georgi Antchev, Dimitri Borilkov, Ivana Hristova, Petiu Petev, Peicho Petkov, Borislav Pavlov, Peter Hristov, Mihail Tchijov, Stefan Piperov, Ekaterina Ivanova, Dimitar Kolev, Roumen Tzenov
Is unitary and integral Yugoslavia possible?
No full textTitle: Bъзмοжнa πu e euòннa u uяπocmнa Юƨocπaeuя? Ha ƨpaнuyama мeжòy noπumuκama u фuπocoфuяma (Is unitary and integral Yugoslavia possible? On the borderline between politics and philosophy) Originally published: in the magazine Фuπocoфcκu npeƨπeò, IV, 1932, vol. III, pp. 197–227. Language: BulgarianThe excerpts used are from the original, pp. 213–214, 220, 221–223. About the author Dimitar Mihalchev [1880, Lozengrad (Tur. Kirklareli, present-day Turkey) – 1967, Sofia]: philosopher and diplom..
THE IDIOLECT OF REVEREND ECONOMOS DIMITAR POPNIKOLOV PETKANOV
Get PDFA less studied talented author and brother of the popular fiction writer Konstantin Petkanov, priest
Dimitar wrote in the 1950s. This publication analyzes several parameters of his idiolect: phonetic peculiarities (reflex of ѣ, ѫ,
ъ; epenthetic [l]; reflexes of the [tʃ] [dʒ] groups; phonetic dialectisms; phonetic doublets); morphological paradigm (case
inflections; noun form for number; dualis; nomina collectiva; extended Church Slavonic suffix for adjectives; dialectal and
contracted pronoun forms; a temporal system characterized by high frequency of the verbs in terms of origin, distribution and
stylistic differentiation); lexical specifics (in terms of origin, distribution and stylistic differentiation). Emphasis is placed on
those lexical layers that constitute and ditinguish the author’s language. Hapaxes (produced using morphological and non-
morphological methods), rare words, semantic transponents, dialectisms, colloquial vocabulary and foreign words are studied.
All linguistic phenomena are examined retrospectively and in comparison with the synchronous linguistic situation before and
after the orthographic reform of 1945 in order to highlight the innovative contribution and the mechanisms through which the
author enriched the contemporary Bulgarian vocabulary. Occasionalisms, dialectal and archaic units occur more often in
Petkanov’s poetic works than in his fiction. The source material has been excerpted from Volume 1 (January – March) and
Volume 2 (April – June) of the hagiographic tetralogy “The Year of Our Lord“ and the memoir “A Book about My Brother –
the Writer Konstantin N. Petkanov“, which were published a few years ago by Dimitar Petkanov’s heirs
Biosecurity measures on ruminant farms
No full textIn many scientific papers, the term biosecurity measures (BSMs) are defined as the implementation of
segregation, sanitation or management procedures specifically designed to reduce the likelihood of the
introduction, establishment, survival or spread of a potential pathogen into, within or from a farm or
geographical area. The main BSMs (general external and internal BSMs related to newly introduced animals,
farm workers, family members, visitors and service providers, vehicles, tools and equipment, location of
farms, water and feed, control programs, management practices, handling of raw materials, work procedures,
training, plans and records), based on literature data, guides, instructions, recommendation codes and
checklists, are presented in the paper. In addition to the BSMs mentioned, the importance of segregation,
cleaning and disinfection is emphasized. The most important and effective part of biosecurity is to keep
infected animals and contaminated material away from non-infected animals. Cleaning and disinfecting
barns, vehicles and equipment, especially boots and clothing, is a very effective way to minimize the
transmission of disease to or between animals. It is very important to implement BSMs as a long-standing
and successful practice on farms to maintain animal health. These measures should be included in a
comprehensive biosecurity plan, which is tailored to farms characteristics and needs that must be fully
implemented. A biosecurity plan and the design and implementation of biosecurity programs should address
how farmers handle animals, vehicles and human access to the farm, as well as animal health and work
procedures. Key BSMs should be followed on an ongoing basis and, working with veterinarians, farmers
themselves can play an important role in keeping animals and production as healthy as possible. It is
important to regularly assess the implementation of BSMs using appropriate questionnaires, which can
highlight deficiencies that should be addressed immediately
Imperium Militiae(I)
No full textThe most common idea in Romance studies is that Romans, as practical people, didn’t conduct theoretical research on their country or their army, but they gradually built them both. Meanwhile, they reformed and upgraded it, so that they could respond to the challenges of their age. Moreover, the basis of their research was not explicit doctrines, or prior concepts, in fact they used their own, or the experience of others, to find concrete solutions to daily problems. Just as the Hellenic romanophile Polibius (200-120 B.C), in his work Historia, asks the crucial question: ”Is it possible to have such an unreliable man who is not interested in how the Romans, with their unicipal structure, managed to conquer the whole world”? - in the same way the author of this paper, as much as its content allows, humbly and unpretentiously tries to answer the crucial question: “What kind of military structure
created and defended one of the biggest and most enduring empires in world’s history, and what rules governed it”
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