Product developments and dissemination activities

This document shows product developments and dissemination activities carried out within the framework of, or in close relation to, the project IEA SHC Task 41; Solar Energy and Architecture. This Task gathered researchers and practicing architects from 14 countries in the three year project whose aim was to identify the obstacles architects are facing when incorporating solar design in their projects, to provide resources for overcoming these barriers and to help improving architects’ communication with other stakeholders in the design of solar buildings. Participating countries were Australia, Austria, Belgium, Canada, Denmark, Germany, Italy, Norway, Portugal, Republic of Korea, Singapore, Spain, Sweden and Switzerland. The report gives not a complete list of activities, but shows the different types of activities to spread the findings in Task 41 and to initiate product developments in participating countries

Early life of Neanderthals

The early onset of weaning in modern humans has been linked to the high nutritional demand of brain development that is intimately connected with infant physiology and growth rate. In Neanderthals, ontogenetic patterns in early life are still debated, with some studies suggesting an accelerated development and others indicating only subtle differences to modern humans. Here we report the onset of weaning and rates of enamel growth using an unprecedented sample set of three late (~70-50 ka) Neanderthals and one Upper Paleolithic modern human from Northeastern-Italy via spatially-resolved chemical/isotopic analyses and histomorphometry of deciduous teeth. Our results reveal that the modern human nursing strategy, with onset of weaning at 5-6 months, was present among these Neanderthals. This evidence, combined with dental development akin to modern humans, highlights their similar metabolic constraints during early life and excludes late weaning as a factor contributing to Neanderthals' demise

Molecular Identification of Atlantic Bluefin Tuna (Thunnus thynnus, Scombridae) Larvae and Development of a DNA Character-Based Identification Key for Mediterranean Scombrids

The Atlantic bluefin tuna, Thunnus thynnus, is a commercially important species that has been severely over-exploited in the recent past. Although the eastern Atlantic and Mediterranean stock is now showing signs of recovery, its current status remains very uncertain and as a consequence their recovery is dependent upon severe management informed by rigorous scientific research. Monitoring of early life history stages can inform decision makers about the health of the species based upon recruitment and survival rates. Misidentification of fish larvae and eggs can lead to inaccurate estimates of stock biomass and productivity which can trigger demands for increased quotas and unsound management conclusions. Herein we used a molecular approach employing mitochondrial and nuclear genes (CO1 and ITS1, respectively) to identify larvae (n = 188) collected from three spawning areas in the Mediterranean Sea by different institutions working with a regional fisheries management organization. Several techniques were used to analyze the genetic sequences (sequence alignments using search algorithms, neighbour joining trees, and a genetic character-based identification key) and an extensive comparison of the results is presented. During this process various inaccuracies in related publications and online databases were uncovered. Our results reveal important differences in the accuracy of the taxonomic identifications carried out by different ichthyoplanktologists following morphology- based methods. While less than half of larvae provided were bluefin tuna, other dominant taxa were bullet tuna (Auxis rochei), albacore (Thunnus alalunga) and little tunny (Euthynnus alletteratus). We advocate an expansion of expertise for a new generation of morphology-based taxonomists, increased dialogue between morphology-based and molecular taxonomists and increased scrutiny of public sequence databases.Versión del editor4,411

Integrated solar thermal facade component for building energy retrofit

In the perspective of the "Net Zero Energy Buildings" as specified in the EPBP 2010/31/EU, herein a modular unglazed solar thermal facade component for facilitating the installation of active solar thermal facades has been conceived and designed to answer three considerations: (1) easily installable elements, offering high modularity to be sized for the specific needs of the buildings considered, (2) low-price unglazed technology, given by the industrial process already developed for the fridge evaporators, and (3) versatile modules to be used for both new buildings and for existing buildings for energy retrofitting. The existing buildings stock offers a high-potential opportunity to improve the energy efficiency when using such a system. Indeed, the building envelope elements have a significant impact on energy consumptions and performances of the building, and this is a key aspect to consider during renovation. Considering buildings integrating solar thermal (BIST) by the means of facade retrofitting of solar thermal collectors (STC) opens up new challenges for engineers. Facade usage, compared to the traditional roof installations, offers two interesting potentialities: (1) increased available surfaces, and (2) minimization of the unwanted overheating problem, that appears in summer, thanks to the vertical tilt (as the energy production is almost constant over the year). This allows sizing the STC according to the actual heat needs and avoids as much as possible energy fluxes mismatch. The design methodology of such a modular component is the main contribution of the PhD work. The challenges are tackled via a parametric approach. Dynamic simulation tools support the design choices for the energy systems of BIST and to optimize the interactions between the envelope and the STC with the criteria of reducing the overall energy consumption. This methodology is described and applied to the design of a modular prototype of an innovative facade component integrating unglazed STC. We first analyze a variety of typologies of buildings as potential commercial targets of the facade component of unglazed STC integrated facade element. Both residential and non residential buildings are considered. The purpose of this analysis is to match the heat loads for properly sizing the facade elements for each typology. Benchmark models of buildings from the Department of Energy are used such as multifamily houses, hospitals, big and small hotels, schools, offices. These are simulated through EnergyPlus in three European locations (Stockholm, Zurich and Rome) in order to define the yearly heat loads for domestic hot water (DHW) and space heating (SH) needs. Finally, the prototype is conceived and designed as a low-cost product to implement into facades with the criteria of optimizing the energy production. The unglazed STC is combined with a simple configuration of combisystem in order to define some rule of thumbs through Trnsys. By the fact that the energy is produced at lower temperatures, if compared with glazed flat plate collectors, this technology is potential applicable to those buildings having the proper heat loads and the suitable system layout

Psychological Wellbeing and Perceived Social Acceptance in Gender Diverse Individuals

Background: Over the last few years, the gender binary has been questioned, highlighting the existence of gender diverse people, who identify as neither (exclusively) male nor female. Aim: The present study evaluated the possible differences in terms of psychological wellbeing between binary and gender diverse individuals, as well as the role of perceived social acceptance and religious fundamentalism as possi- ble mediators of psychopathology in gender diverse people. Furthermore, the diversity of gender-affirming hor- monal treatment requests according to gender identification was investigated. Methods: A sample of 563 transgender people aged 18−70 was enrolled (n = 264 assigned female at birth, AFAB and n = 299 assigned male at birth, AMAB), all individuals referring to several Italian gender clinics. A subdivision of the study population based on the gender identity visual analog scale (GI-VAS) median was performed, in order to distinguish between gender diverse and binary transgender individuals. Moreover, a linear regression analysis was performed entering logarithmically transformed GI-VAS (Log GI-VAS) into the models with psychometric scales. Outcomes: Psychometric and sociodemographic data, as well as information regarding requests for gender- affirming treatments, were extrapolated from the clinical interviews conducted during the first referral. Results: Gender diverse individuals showed significantly less intense gender dysphoria and higher levels of depres- sion and anxiety compared to binary ones; accordingly, a less binary gender identity correlated with higher levels of depression and anxiety and lower levels of gender dysphoria. The depressive symptomatology in gender diverse peo- ple was partially mediated by perceived discrimination and humiliation. Moreover, gender diverse AMAB people sought a non-standard hormonal treatment more often than their binary counterpart. Clinical Implications: The present study highlights the importance for transgender health professionals, when plan- ning gender-affirming hormonal treatments, to offer flexible interventions, tailored on the patient’s needs and goals. Strengths & Limitations: Strengths included exploring whether and how perceived discrimination may affect mental health in gender diverse people. Limitations included the enrolled sample of people referring to different gender clinics, which is not fully representative of the transgender population. Conclusion: This study highlights the importance of evaluating each individual’s unique health care needs, exploring each single request and its underlying reasons

Misidentification of bluefin tuna larvae: a call for caution and taxonomic reform

The international effort to prevent the collapse of Atlantic bluefin tuna (BFT, Thunnus thynnus, Scombridae) stocks exemplifies the challenges associated with modern marine resource conservation. Rampant mismanagement, under-reporting and illegal, unreported and unregulated fishing led to decades of over-exploitation in the BFT fishery. Surveys of larval abundance in the Gulf of Mexico and the Mediterranean Sea have been used as a proxy for both spawning biomass and recruitment by researchers working to improve estimates of stock abundance. Recent genetic barcoding studies have revealed that species identification errors are common among larvae surveys that use morphology-based taxonomy alone. Misidentification of larvae can lead to uncertainty about the spatial distribution of a species, confusion over life history traits and population dynamics, and potentially disguise the collapse or recovery of localized spawning sites. In an effort to identify the source of these errors, we review several weaknesses in modern morphology-based taxonomy including demographic decline of expert taxonomists, flawed identification keys, reluctance of the taxonomic community to embrace advances in digital communications and a general scarcity of modern user-friendly materials. Recent advances in molecular techniques useful for specimen identification and population studies are discussed at length. We advocate a more constructive integration of morphology-based taxonomy and barcoding in order to add confidence to larval surveys and to strengthen associated fisheries managementVersión del editor2,270