Search results for " secondary"
showing 10 items of 692 documents
Spatio-temporal patterns and drivers of secondary succession in a Mediterranean landscape
2017
In recent years, many Mediterranean agricultural lands have been abandoned, reforested, rewilded and ecologically restored, creating different templates and trajectories for the development of secondary succession. Our objective was to verify whether past legacies of woody vegetation (remnant forest, shrub patches and reforestations) influenced the current spatial pattern of woody cover in a mid-successional Mediterranean area, identifying spatial cold and hotspots (i.e: low/slow or high/fast cover increase) and looking for footprints of seed-disperser and herbivore-mediated processes at landscape and local scales. The study took place in three 500x200 m plots in a formerly managed and part…
Cattle seed dispersal services and perspectives for management in a high biodiversity Mediterranean silvopastoral system
2019
In Mediterranean traditional silvopastoral systems are composed mostly with oaks, with an overall lack of fleshy-fruited species, key elements in Mediterranean flora. A mixed composition may enhance biodiversity and diversify fodder for livestock, and at the same time guarantee higher resistance, resilience and a richer network of ecological interactions. Here we investigated the interactions of cattle and native fleshy-fruited species in a high biodiversity silvopastoral system inside the last large forest remnant in western Sicily, Italy. Along two fruiting seasons we used sampling transects covering the gradient from the forest to the pastureland and analyzed 132 cattle dungs, of which 4…
Progressive and predicative constructions with gerund in Romance. A contrastive analysis
2018
Progressive and predicative constructions formed with gerund are present in numerous Romance languages. In the literature, these two types of construction have often been considered as syntactically analogous. Through the application of syntactic tests, this study will show that, despite a number of similarities, progressive and predicative constructs with gerund are characterized by a different structure.
Hypobetalipoproteinemia: genetics, biochemistry, and clinical spectrum.
2011
Hypobetalipoproteinemias (HBL) represent a heterogeneous group of disorders characterized by reduced plasma levels of total cholesterol (TC), low density lipoprotein-cholesterol (LDL-C) and apolipoprotein B (apoB) below the 5th percentile of the distribution in the population. HBL are defined as primary or secondary according to the underlying causes. Primary monogenic HBL are caused by mutations in several known genes (APOB, PCSK9, MTP, SARA2) or mutations in genes not yet identified. Familial hypobetalipoproteinemia (FHBL) is the most frequent monogenic form of HBL with a dominant mode of inheritance. It may be due to loss-of-function mutations in APOB or, less frequently, in PCSK9 genes.…
Canine pancytopoenia and hemophagocytic lymphohistiocytosis.
2018
Leishmaniasis and rickettsial diseases are endemic and common in Mediterranean countries and so, as in humans, these diseases could be an important cause of HLH in dogs and may respond to similar medications. In conclusion, we think that the diagnosis of HLH should be considered in dogs with pancytopenia and, in selected cases, immunosuppressive treatment might be warranted.
Il trattamento medico e chirurgico nei pazienti affetti da iperparatiroidismo secondario e terziario. Revisione della letteratura
2017
Introduzione: L’iperparatiroidismo è un’alterazione fisiopatologica della secrezione di paratormone dovuta o da un rilascio autonomo e anomalo (iperparatiroidismo primario o terziario) da parte delle paratiroidi o da un’alterazione dell’omeostasi del calcio che stimola l’eccessiva produzione di paratormone (iperparatiroidismo secondario). Obiettivi: Il trattamento clinico dell’iperparatiroidismo secondario o terziario non è univoco. Sorge pertanto la necessità di una revisione delle attuali metodiche diagnostico-terapeutiche. Discussione: Nell’iperparatiroidismo secondario (2HPT) si ha una progressiva iperplasia delle paratiroidi e un incremento della produzione di paratormone. Tra le cause…
Test module filtrations for unit $F$-modules
2015
We extend the notion of test module filtration introduced by Blickle for Cartier modules. We then show that this naturally defines a filtration on unit $F$-modules and prove that this filtration coincides with the notion of $V$-filtration introduced by Stadnik in the cases where he proved existence of his filtration. We also show that these filtrations do not coincide in general. Moreover, we show that for a smooth morphism $f: X \to Y$ test modules are preserved under $f^!$. We also give examples to show that this is not the case if $f$ is finite flat and tamely ramified along a smooth divisor.
Bi-Sobolev extensions
2022
We give a full characterization of circle homeomorphisms which admit a homeomorphic extension to the unit disk with finite bi-Sobolev norm. As a special case, a bi-conformal variant of the famous Beurling-Ahlfors extension theorem is obtained. Furthermore we show that the existing extension techniques such as applying either the harmonic or the Beurling-Ahlfors operator work poorly in the degenerated setting. This also gives an affirmative answer to a question of Karafyllia and Ntalampekos.
Why Study Online in Upper Secondary School? Qualitative Analysis of Online Learning Experiences
2015
In Finland, online learning has become more common in recent years. In this study, we examined why adult students chose to study online for upper secondary school. The research also focused on the support needed for learning from a special education perspective. Both qualitative and quantitative data were collected using an electronic questionnaire. In total, 58 students responded. Data were analyzed qualitatively using the content analysis technique. The findings indicate that the main reasons for online studies are similar in Finland to those found internationally: flexibility of timetables, the student’s health condition, and family situations. The findings also indicate that a student’s…
Changes in achievement values from primary to lower secondary school among students with and without externalizing problems
2017
This study examined the effect of students' externalizing problems on changes in values that they attach to math across the transition from primary to lower secondary school. Data pertaining to externalizing problems and to intrinsic, attainment, and utility values in math were gathered using the self-ratings of students in Grades 6 and 7. The analysis involved a comparison between students who reported persistent high externalizing problems before and after the transition (n = 63; 59% boys) and those who had low or non-existent externalizing problems before and after the transition (n = 1352; 50% boys). The results of a mixed-design analysis of covariance (ANCOVA) showed uniformly that stu…