Stato dell'arte del fotovoltaico organico

Analisi dei materiali e delle tecnologie utilizzate nella terza generazione fotovoltaica con particolare attenzione ai materiali organici e alle loro applicazioni. stato dell'arte del fotovoltaico organico sia per quanto riguarda le tecnologie utilizzate che i risultati ottenuti in termini di efficienza di conversioneope

Progettazione e dimensionamento del castello motore per un velivolo ultraleggero

E' stata trattata la progettazione e il dimensionamento della struttura di supporto motore del “Merlo†, l'ultraleggero facente parte del progetto "Learn to Fly" . Il motore inizialmente previsto, è stato sostituito con uno più potente, già in possesso del team di lavoro. Lo scopo di questo di elaborato è quindi la riprogettazione di un nuovo castello motore e delle parti ad esso annesse, in modo da consentire il montaggio del nuovo propulsore.ope

Effects and Modes od Action of Canopy Management Practices on Vine Physiology and Berry Composition in Organically-Cultivated cv. Sangiovese (Vitis Vinifera L.)

In organic and biodynamic vineyards, canopy management practices should be carefully and timely modulated, particularly in a context of climate change, for successfully achieving balanced plants, ventilated and exposed berries, elevated grape and wine quality. In 2013 and 2014, characterized by contrasting climatic conditions, the implications of post-veraison (late) or pea-size trimming, post-veraison or pre-harvest late defoliations and shoot-positioning (post-veraison) were assessed against long-shoots non treated controls, under field conditions on organically-cultivated cv. Sangiovese. The key agronomic and enological relevance of late trimming and defoliations clearly emerged in both seasons. Berry skin phenolics (e.g. anthocyanins, flavonols) increased markedly, without changes in technological parameters. In case of early trimming, such positive effects were observed only in 2013. Maintaining long shoots for shading decreased anthocyanins, flavonols and total phenolics concentrations and promoted the production of compact bunches. Experimental data strongly designated late trimming, a practice proved to contain yield and bunch compactness, as a valuable alternative to cluster thinning. Late trimming, defoliations and shoot positioning reduced the severity of Botrytis cluster rot. The highest levels of berry skins phenolic compounds in late trimmed and defoliated plants could have contributed control the severity of this pathogen. The enological benefits induced by late trimming and defoliations and shoot positioning emerged in both young and aged wines. For the first time, cell cultures from cv. Sangiovese berry tissues were obtained and enabled to investigate, in controlled conditions, the relations between mechanisms regulating secondary metabolism in grapevine cells and changes induced by environmental and agronomic factors. The Doctoral Dissertation strongly highlights the need to consider, for a proper interpretation of the multiple modifications induced by canopy management strategies, physiological mechanisms other than the canonic source-sink relationships, in particular their impact on the vine hormonal status

Productive complex of defense and security in Brazil: dimensional, sectoral and technological impacts

Mensurou-se de forma inédita o complexo de defesa e segurança brasileiro. Ele correspondeu a 3,7% do PIB do Brasil em 2014. Também verificou-se que os projetos de investimento das Forças Armadas apresentam impactos socioeconômicos elevados e grande potencial tecnológico ao demandar produtos e serviços de alta tecnologia. Foram levantadas informações não publicadas junto a diversos órgão públicos (Ministérios, Secretarias Estaduais, Portal da Transparência). Com isto, estimamos os setores de defesa e segurança na matriz de insumo-produto brasileira e identificamos o perfil setorial dos projetos de investimentos de defesa. Esta metodologia inovadora pode ser aplicada para avaliar outras políticas públicas.In a novel way, we have measured the Brazilian defense and security complex. It corresponded to 3.7% of the Brazilian GDP in 2014. We have also estimated that the investment projects of Armed Forces have high socioeconomic impacts and great technological potential by demanding high-tech products and services. Unpublished information was collected from several public agencies (Ministries, Public Security, and Government Transparency Portal). With this, we estimate the security and defense sector in Brazilian input-output matrix and identify the sectoral profile of the defense investment projects. This innovative methodology can be applied to evaluate other public policies

Endodontic Recontamination and Retreatment: The Concise Systematic Review

Introduction: It is necessary to know the nature of the endodontic microbiota within the root canal system of teeth with necrotic pulp tissues. There are several methods of microbial identification, including techniques based on culture or non-predominance of facultative anaerobes and Gram-positive species, especially Enterococcus faecalis. The 16S ribosomal RNA (rRNA) gene sequencing approach has become the reference method. Polymerase chain reaction (PCR) is a molecular technique also used. A condition for successful endodontic retreatment is proper cleaning of the root canals. Objective: Evaluate through a systematic literature review the main contaminations, recontaminations, and endodontic retreatments in root canals. Methods: The present study was followed by a systematic literature review model, according to the PRISMA rules. Clinical studies included case reports, retrospective, prospective and randomized trials. The quality of the studies was based on the GRADE instrument. The risk of bias was analyzed according to the Cochrane instrument. Results: A total of 94 articles were found. A total of 58 articles were evaluated in full, and 34 were included and discussed in this study. The overall assessment did not result in significant risks that could compromise the science of the present study. According to the GRADE classification, the studies were of moderate quality. Conclusion: It was concluded that it is essential to characterize the microbiota of root canals with failed endodontic treatment through 16S ribosomal RNA (GS) gene sequencing and PCR. Furthermore, it can be stated that the root canal instrumentation system with rotating files maintains the quality of root preparation, reducing the operative time and also the risk of a torsional fracture within the root canal

Morphological and molecular characterization of adults and larvae of Crassicauda spp. (Nematoda: Spirurida) from Mediterranean fin whales Balaenoptera physalus (Linnaeus, 1758)

Crassicauda boopis is known to infect the kidneys and vascular system of mysticetes included Balaenoptera physalus and has been recently reported in Mediterranean waters. Identification at the species level relies on the observation of morphological features of the adult parasites, but field conditions during necropsy and the massive reaction of the host's immune system often prevent optimal conservation of the extremities. Moreover, larval stages of Crassicauda have never been described and no sequences are available in public databases to help such identification. Adult and larvae of Crassicauda were isolated from four specimens of B. physalus and studied with morphological and molecular techniques. Specimens of C. anthonyi, C. grampicola and Crassicauda sp. isolated from Ziphius cavirostris, Grampus griseus, Stenella coeruleoalba and Tursiops truncatus respectively were studied as well. Sequences of nuclear markers 18S and ITS-2 and of mitochondrial gene cox1 were obtained and phylogenetic relationships within the genus Crassicauda were analysed. Analysis of the ITS2 grouped the dif- ferent species in accordance with morphological identification, as already evidenced in literature for other Spirurida. A higher intra-specific variability was observed for the cox1 gene, for which two species (C. grampicola and C. anthonyi) did not appear as monophyletic in the tree. Well-developed non-attached larval specimens in the intestinal lumen of a whale calf were molecularly identified as C. boopis, allowing new insights on the life cycle of this species. This work broadens the genetic database on cetaceans parasites, allowing species identi- fication even in challenging field conditions or in poor conservation of the samples; moreover, the first mor- phological description of C. boopis larvae is provided

Major predictors of early dental implant loss: a systematic review

Introduction: In the dental implant (DI) scenario, it is estimated that about 18 million DI occur annually in the world. There are over 1,300 types of dental implants. DI also has several side effects such as biological complications, which are adverse reactions in the hard and soft tissues of the implant prosthesis, such as mucositis and peri-implantitis. Still, poor oral health, alcohol intake, and smoking are some of the underlying predictors that contribute to these complications. Objective: A systematic review was carried out on the main considerations of early loss of dental implants, presenting through clinical findings the main predictors of dental implant failure. Methods: The rules of the Systematic Review-PRISMA Platform. The research was carried out from December 2021 to February 2022 and developed based on Scopus, PubMed, Science Direct, Scielo, and Google Scholar. The quality of the studies was based on the GRADE instrument and the risk of bias was analyzed according to the Cochrane instrument. Results: A total of 244 articles were found. In total, 102 articles were fully evaluated and 32 were included and evaluated in this study. Lack of primary stability, surgical trauma, and infection are the main predictors. It can be said that the quality and quantity of bone enable a high success rate for the preservation of alveolar bone around implants. The highlights of predictors of DI failures are biological failures, mechanical failures, iatrogenic failures, inadequate adaptation, which includes aesthetic dissatisfaction and psychological problems. Conclusion: Despite the high success rate, implants fail. Primary instability, surgical trauma, and perioperative contamination appear to be the most important predictors of implant failure. Furthermore, the determination of this genetic pattern in osseous integration makes it possible to identify individuals at greater risk of implant loss. Thus, genetic markers are important, contributing to an adequate preoperative selection and development of prevention strategies and individualized therapy to modulate genetic markers and increase the success rate of treatments

Aletheia. A scuola di satira (antica). Un esperimento sulla scena tra ricerca, didattica e comunicazione

Satire is a critique of reality, of human life, of society and of shared values such as richness, power, descent, fame, success. It is a satire of traditions, politics, beliefs and social conventions. According to the rules of ancient democracy, it requires the courage of parrhesia, the “freedom of speech”, and of aletheia, the “truth”, even when they are uncomfortable or difficult. Without dogmatisms and with a certain degree of self-irony, the truth is a continuous and infinite truth. Criticism then becomes a fundamental contribution for human life and for a society of citizens. Starting from these premises, in Autumn 2013 the experimental project Aletheia. A scuola di satira (antica) has proposed a series of conferences, seminars and debates on satire and critical thinking in ancient times and today. The project was held at the University Ca’ Foscari in Venice and at the Arrigoni Theatre in San Vito al Tagliamento, and it connected university and research with schools, institutions and civil rhesis. La satira è critica del reale, della vita umana, della societàAbstract Satire is a critique of reality, of human life, of society and of shared values such as richness, power, descent, fame, success. It is a satire of traditions, politics, beliefs and social conventions. According to the rules of ancient democracy, it requires the courage of parrhesia, the “freedom of speech”, and of aletheia, the “truth”, even when they are uncomfortable or difficult. Without dogmatisms and with a certain degree of self-irony, the truth is a continuous and infinite truth. Criticism then becomes a fundamental contribution for human life and for a society of citizens. Starting from these premises, in Autumn 2013 the experimental project Aletheia. A scuola di satira (antica) has proposed a series of conferences, seminars and debates on satire and critical thinking in ancient times and today. The project was held at the University Ca’ Foscari in Venice and at the Arrigoni Theatre in San Vito al Tagliamento, and it connected university and research with schools, institutions and civil rhesis. La satira è critica del reale, della vita umana, della società e dei valori condivisi da tutti, come la ricchezza, il potere, la stirpe, la fama, il successo. È satira dei costumi, della politica, delle credenze, delle convenzioni sociali. Secondo le migliori regole della democrazia antica, è necessario avere il coraggio della parrhesia, la «libertà di parola», e dell'aletheia, la «verità», anche quando appaiono scomode o difficili. Senza dogmatismi e con un buon grado di autoironia, la verità è sempre una ricerca continua e infinita. La parola critica diviene allora un contributo fondamentale per la vita degli uomini e per la società dei cittadini. Da questa prospettiva l'esperimento di Aletheia. A scuola di satira (antica) ha proposto nell'autunno 2013, all'Università Ca' Foscari di Venezia e sulla scena del settecentesco Teatro Arrigoni di San Vito al Tagliamento, un'ampia serie di interventi, seminari e discussioni dedicati alla satira e al pensiero critico dei grandi classici antichi a confronto col nostro mondo attuale. Con una prospettiva multidisciplinare e con un intreccio tra università e ricerca, scuola e didattica, istituzioni cittadine e rhesis civile

Surveillance of Zoonotic Parasites in Animals Involved in Animal-Assisted Interventions (AAIs)

Animal-assisted interventions (AAIs) are based on the establishment of a therapeutic relationship between animals and beneficiaries that is certain to provide positive effects, while currently, it reads as if AAIs aim at exposing stakeholders to potential risk of infection. The surveillance of zoonotic pathogens is necessary for guaranteeing common health. This study investigated the presence of potentially zoonotic parasites, including dermatophytes, in animals involved in AAIs. Between 2015 and 2017, 190 animals (equids, dogs, cats, birds, rabbits, rodents, and goats) were investigated. Anamnestic and management data were recorded. Individual faecal samples were analysed using a copromicroscopic procedure. Fur and skin were examined for ectoparasites during clinical examinations, and samples for mycological investigation were collected by brushing. Parasites were described in 60 (31.6%) investigated animals. Thirteen out of the 60 (21.7%) animals harboured potentially zoonotic parasites, mainly recovered in dogs (Ancylostomatidae, Eucoleus aerophilus, Toxocara canis, and Giardia duodenalis) and a cat (G. duodenalis). Nannizzia gypsea and Paraphyton mirabile, potential agents of cutaneous mycosis, were isolated in a dog and a horse, respectively. No ectoparasites were found. AAIs might represent a source of infections either directly or via environmental contamination. Thus, active surveillance is necessary and animal screenings should be planned and scheduled according to the risk of exposure

Cardiovascular flukes (Trematoda: Spirorchiidae) in Caretta caretta Linnaeus, 1758 from the Mediterranean Sea

Background: The northern Adriatic Sea represents one of the most important neritic foraging grounds for the loggerhead sea turtle Caretta caretta L. in the Mediterranean Sea. Four genera of blood flukes with variable prevalence and pathogenic impact have been reported worldwide in this species. Hapalotrema Looss, 1899 and Amphiorchis Price, 1934 are the only two genera reported in Mediterranean waters; however, updated data describing spirorchiidiasis in the central and eastern Mediterranean and infection prevalence are still lacking. This work aimed to investigate the presence and pathology of spirorchiidiasis in C. caretta in the Mediterranean Sea. Methods: One hundred sixty-eight animals stranded along the northwestern Adriatic coast between 2009 and 2015 were submitted to necropsy and subsequent analyses for the detection of adult flukes, detection of eggs in the faeces and spleen and histopathology. Molecular analyses were carried out on hosts (mitochondrial D-loop) and parasites (28S gene and ITS2 spacer) to trace the turtle origins and identify the fluke phylogenetic relationships. Results: Spirorchiidiasis was detected in 16.7% of the animals. Hapalotrema mistroides (Monticelli, 1899) and Neospirorchis sp. were found in twenty-six and ten cases, respectively. Adult flukes were found in six cases, while eggs were detectable through copromicroscopic examination for all infected turtles, and the results for the detection of eggs in the spleen agreed with the copromicroscopic analysis. Only mild lesions were observed. Eggs of types 1 and 3 were grossly visible in the gastrointestinal mucosa, vasculitis was rarely observed in the heart and great vessels, and multifocal granulomas were widespread in the tissues. Molecular identification unambiguously assigned the spirorchiid samples to H. mistroides and Neospirorchis sp. Genetic characterization of loggerhead mtDNA pointed to a Mediterranean origin of the turtle hosts. Conclusion: This survey provides new data on the spread of spirorchiidiasis in the Mediterranean loggerhead sea turtle population and reports for the first time the presence of Neospirorchis spp. in this basin. The infections did not have a causal effect on the death nor a strong impact on the general health status of the animals