Quantifying the impact of energy technology innovation on cost reductions

The alarming global warming risk has pushed for global consensus on the decarbonisation of the energy systems to achieve a low carbon future. In this context, it is necessary to invest in the deployment of emergent renewable energy technologies to accelerate the decarbonisation path of the national energy systems. The recent achievements in technology innovation for two mature renewable energy technologies, onshore wind and solar photovoltaic are generally recognised by decision-makers. However, this is not enough and most of current energy systems remain dependent on fossil-fuel resources to satisfy growing energy demands. Cost reductions are required across many more renewable technologies but the dynamics of how to achieve these cost reductions are poorly understood. Deeper insights into the impacts of energy technology innovation on cost reductions are essential in order to accelerate the development and deployment of emerging renewables energy technologies. This thesis both highlights and addresses the current knowledge gap in our understanding of technology innovation, in the quantification of the drivers of technology cost reduction and in the innovation needs to accelerate technology cost changes. The core of the thesis consists in linking together distinct fields of knowledge in an interdisciplinary manner: on one side the theory of technology cost reduction drivers and the energy technology innovation system framework, and on the other side analytical models to quantify the drivers of cost reduction and identify the innovation needs required to accelerate cost reductions. The thesis firstly develops an understanding of the role of energy technology innovation on technology cost reductions. It explores the impacts of innovation along the different stages of development of a technology and identifies the main drivers of technology cost reductions. In so doing, the thesis also reveals the methods used to quantify multiple drivers of cost reduction and their analytical findings. The thesis then investigates a new method to quantify technology cost reduction drivers based on an advanced bottom-up cost model for onshore wind. The disaggregation in cost components and techno-economic variables developed in this method generates clearer results than current approaches in the literature can provide. This includes improving the causality link between costs components reduction and drivers and providing insights into the impacts of variables related to technical aspects and to manufacturing processes. The thesis highlights the current limitations of attempts to incorporate energy technology innovation impacts into energy system optimization models, the main tools used to inform policy-makers on future climate actions. It further proposes a novel approach to explore technology innovation within current energy system optimization models. This approach links an energy system model with a historical innovation analysis, focusing on the prospects of wave energy development in Ireland. The combination of these two methods generates insightful results regarding the innovation needs required to accelerate technology innovation for wave energy that could not be captured with a single-method approach. The key contributions of this thesis are the enrichment of our understanding of technology innovation, new insights and alternative improved methodologies to quantify technology costs reduction changes allowing to move beyond one-factor analyses, and novel methods to investigate the innovation needs required to accelerate technology cost reduction for emerging energy technologies. Moreover, an example of potential impact on the research community, this thesis lead to discussion between energy modellers and innovation practitioners about the contribution of technology innovation in energy system models.

The DAVAd: A Narrative Tool to Explore the Early Stages of the Adoptive Bond

The DAVAd (the first bond process diary) is a new narrative tool created to accompany the adoptive couple during their trip to the land of the child/children to whom they have been matched. The tool presented is the first to explore what happens, in term of events and emotional experiences, during the first meetings between the parental couple and the child/children. This period is clinically relevant as the ideal is compared with the real. The DAVAd supports the parental couple in focusing on their experiences and their meanings and learning to deal with the complexity related to the bound construction. Moreover, the DAVAd allows the clinical psychologist in detecting and treating, if necessary, the familiar dynamics, favoring the prevention of the distress. A clinical case that utilizes the DAVAd will be presented, to enlighten the way its compilation can be used by researchers and clinicians

Identification of novel 2-benzoxazolinone derivatives with specific inhibitory activity against the HIV-1 nucleocapsid protein

In this report, we present a new benzoxazole derivative endowed with inhibitory activity against the HIV-1 nucleocapsid protein (NC). NC is a 55-residue basic protein with nucleic acid chaperone properties, which has emerged as a novel and potential pharmacological target against HIV-1. In the pursuit of novel NC-inhibitor chemotypes, we performed virtual screening and in vitro biological evaluation of a large library of chemical entities. We found that compounds sharing a benzoxazolinone moiety displayed putative inhibitory properties, which we further investigated by considering a series of chemical analogues. This approach provided valuable information on the structure-activity relationships of these compounds and, in the process, demonstrated that their anti-NC activity could be finely tuned by the addition of specific substituents to the initial benzoxazolinone scaffold. This study represents the starting point for the possible development of a new class of antiretroviral agents targeting the HIV-1 NC protein

Symptoms of mental health problems among Italian adolescents in 2017–2018 school year: a multicenter cross-sectional study

Background Identifying individual and contextual factors that influence adolescent well-being is a research priority. This study aimed to assess the prevalence of symptoms of mental health problems and some related factors in Italian adolescents in 2017–2018. Methods The present study was a cross-sectional survey among 3002 students aged 15–16 years who resided in two Italian provinces, in North and South Italy. Symptoms of mental health problems were assessed using the SDQ and CES-DC, and students’ risk-taking behaviors and school climate perception were assessed. All information was collected anonymously. Logistic regression models were used to assess the associations of tobacco and alcohol use, screen time, bullying, and school climate with symptoms of mental health problems. Results One student out of five reported symptoms of mental health problems, with a more than double proportion among girls than boys (28.7% vs 10.4% with depressive symptoms, respectively). Thirty percent and 40% of students smoked tobacco or drank alcoholic beverages at least once in the past month, and more than 40% reported being victims or authors of bullying in the past 6 months. Smoking behavior, alcohol consumption, screen time, bullying, and negative school climate had 1.2- to 3.3-fold increased odds of symptoms of mental health problems without substantial differences between sexes and geographical areas. Conclusions Tobacco and alcohol use, screen time, bullying, and school climate were independently associated with symptoms of mental health problems in a large sample of 15–16-year-old Italian adolescents without substantial gender and geographical differences

Extracranial spheno-ethmoidal sinus meningioma: case report

n/

Analysis of the gastrin-releasing peptide receptor gene in Italian patients with autism spectrum disorders

The gastrin-releasing peptide receptor (GRPR) was implicated for the first time in the pathogenesis of Autism spectrum disorders (ASD) by Ishikawa-Brush et al. [Ishikawa-Brush et al. (1997): Hum Mol Genet 6: 1241-1250]. Since this original observation, only one association study [Marui et al. (2004): Brain Dev 26: 5-7] has further investigated, though unsuccessfully, the involvement of the GRPR gene in ASD. With the aim of contributing further information to this topic we have sequenced the entire coding region and the intron/exon junctions of the GRPR gene in 149 Italian autistic patients. The results of this study led to the identification of four novel point mutations, two of which, that is, C6S and L181F, involve amino acid changes identified in two patients with ASD and Rett syndrome, respectively. Both the leucine at position 181 and the cysteine at position 6 are strongly conserved in vertebrates. C6S and L181F mutant proteins were expressed in COS-7 and BALB/3T3 cells, but they did not affect either GRP's binding affinity or its potency for stimulating phospholipase C-mediated production of inositol 1,4,5-trisphosphate. In summary, our results do not provide support for a major role of the GRPR gene in ASD in the population of patients we have studied. However, there is a potential role of C6S and L181F mutations on GRPR function, and possibly in the pathogenesis of the autistic disorders in the two patient

Presence of Bacillus cereus, Escherichia coli and Enterobacteriaceae in fresh and salted Ricotta cheese: official controls in Sardinia during the period 2009 – 2012.

Results of microbiological official analysis carried out during 2009-2012 for detection of Bacillus cereus, Escherichia coli and Enterobacteriaceae in fresh and salted Ricotta cheese marketed in Sardinia, are re-ported. The aim of this research was to evaluate the presence of contaminants indicators of process hy-giene, and the presence of B. cereus, which while not covered in the EC Regulation 2073/05 for this product, it may represent a risk as a potential producer of toxins harmful to the consumer health. Were analyzed a total of 157 samples according to ISO reference. The results indicate a widespread presence of the three types of microorganisms sought: prevalence of B. cereus 53%, 23% Enterobacteriaceae, E. coli 12%. In conclusion, it is desirable the introduction, in the production process, keeping the cold chain to prevent the risk from B. cereus, and improved hygiene of processing plant, equipment and personnel, to reduce recontamination of the product by the Enterobacteriaceae and E. coli

Short-Term Exposure to Bisphenol A Does Not Impact Gonadal Cell Steroidogenesis In Vitro

: Bisphenol A (BPA) is a ubiquitous, synthetic chemical proven to induce reproductive disorders in both men and women. The available studies investigated the effects of BPA on male and female steroidogenesis following long-term exposure to the compound at relatively high environmental concentrations. However, the impact of short-term exposure to BPA on reproduction is poorly studied. We evaluated if 8 and 24 h exposure to 1 nM and 1 µM BPA perturbs luteinizing hormone/choriogonadotropin (LH/hCG)-mediated signalling in two steroidogenic cell models, i.e., the mouse tumour Leydig cell line mLTC1, and human primary granulosa lutein cells (hGLC). Cell signalling studies were performed using a homogeneous time-resolved fluorescence (HTRF) assay and Western blotting, while gene expression analysis was carried out using real-time PCR. Immunostainings and an immunoassay were used for intracellular protein expression and steroidogenesis analyses, respectively. The presence of BPA leads to no significant changes in gonadotropin-induced cAMP accumulation, alongside phosphorylation of downstream molecules, such as ERK1/2, CREB and p38 MAPK, in both the cell models. BPA did not impact STARD1, CYP11A1 and CYP19A1 gene expression in hGLC, nor Stard1 and Cyp17a1 expression in mLTC1 treated with LH/hCG. Additionally, the StAR protein expression was unchanged upon exposure to BPA. Progesterone and oestradiol levels in the culture medium, measured by hGLC, as well as the testosterone and progesterone levels in the culture medium, measured by mLTC1, did not change in the presence of BPA combined with LH/hCG. These data suggest that short-term exposure to environmental concentrations of BPA does not compromise the LH/hCG-induced steroidogenic potential of either human granulosa or mouse Leydig cells

Antibody response against HERV-W env surface peptides differentiates multiple sclerosis and neuromyelitis optica spectrum disorder

A specific humoral immune response against HERV-W envelope surface (env-su) glycoprotein antigens has been reported in serum of patients with multiple sclerosis (MS). However, it has not been evaluated to date in patients with neuromyelitis optica spectrum disorder (NMOSD)

Plx1 is required for chromosomal DNA replication under stressful conditions

Polo-like kinase (Plk)1 is required for mitosis progression. However, although Plk1 is expressed throughout the cell cycle, its function during S-phase is unknown. Using Xenopus laevis egg extracts, we demonstrate that Plx1, the Xenopus orthologue of Plk1, is required for DNA replication in the presence of stalled replication forks induced by aphidicolin, etoposide or reduced levels of DNA-bound Mcm complexes. Plx1 binds to chromatin and suppresses the ATM/ATR-dependent intra-S-phase checkpoint that inhibits origin firing. This allows Cdc45 loading and derepression of DNA replication initiation. Checkpoint activation increases Plx1 binding to the Mcm complex through its Polo box domain. Plx1 recruitment to chromatin is independent of checkpoint mediators Tipin and Claspin. Instead, ATR-dependent phosphorylation of serine 92 of Mcm2 is required for the recruitment of Plx1 to chromatin and for the recovery of DNA replication under stress. Depletion of Plx1 leads to accumulation of chromosomal breakage that is prevented by the addition of recombinant Plx1. These data suggest that Plx1 promotes genome stability by regulating DNA replication under stressful conditions