40 research outputs found
From nearly zero energy buildings (NZEB) to positive energy buildings (PEB): The next challenge - The most recent European trends with some notes on the energy analysis of a forerunner PEB example
The European energy policies introduced the Nearly Zero Energy Building (NZEB) objective (Directive, 2010/31/EU and 2018/844/UE) to stimulate the energy transition of the construction sector. EU programs, specifically “Horizon 2020”, promote the NZEB design and also its evolution, namely the Positive Energy Building (PEB) model. Based on the most recent developments, a critical review of the main actions of the European Union towards the development of the NZEB and PEB design models has been conducted. Some considerations on advanced materials and technologies (PCM, VIP, smart glass, integrated photovoltaic systems) have also been added. Finally, a case study is presented (single-family residential NZEB) to show how a careful and integrated design of the building envelope and systems not only allows to obtain an almost total coverage of the energy consumption by renewable sources, but also to generate an energy surplus that could be shared with urban grids (PEB potential)
From Middle Jurassic heating to Neogene cooling: the thermochronological evolution of the southern Alps
The Dolomite region is located in the Southern Alps which were affected by a Mesozoic extensional tectonics and by consequent thermal perturbations. In this work, vitrinite reflectance and apatite fission-track analysis are used to estimate the thermal evolution. These methodologies have been applied to the Permo-Mesozoic succession which crops out along the TRANSALP seismic profile. The regional distribution of the organic matter maturity seems to be mainly controlled by different burial reached during the Norian-Liassic extensional phase, in connection with high heat flow values. The best solutions obtained from thermal modelling of both vitrinite and fission-track data suggest that peak of high heat flow occurred during Bajocian-Bathonian ages, when western Tethys was characterized by intrusions of gabbros and plagiogranites and extrusion of tholeiite basalts. This time coincides with the onset of the drifting phase and related thermal subsidence. Following thermal relaxation occurred during continous sedimentation and, therefore, maximum burial does not coincide with peak temperatures. Cooling history has been then carefully analyzed through apatite fission-track data on samples collected close to the Valsugana overthrust which document an important exhumation event at about 10 Ma. The related erosion has been analyzed through the combined use of arenite petrography and fission-track analysis on detrital samples of the Veneto foredeep succession, which represents the storage of detritus during Tertiary. These data confirm that after Serravalian the Southalpine domain and related covers were affected by subaerial erosion
Galectin-7 acts as an adhesion molecule during implantation and increased expression is associated with miscarriage
The fulltext of this publication will be made publicly available after relevant embargo periods have lapsed and associated copyright clearances obtained.INTRODUCTION: Galectins are expressed at the fetal-maternal interface and have multiple roles including during blastocyst implantation. The expression of galectin-7 however has not been investigated in the uterus. We aimed to localise galectin-7 to the endometrium of women with normal fertility and with a history of miscarriage and prospectively determine whether serum levels are altered in women who subsequently miscarry. We also investigated the role of galectin-7 on trophoblast-endometrial epithelial cell adhesion. METHODS: Immunohistochemistry localised galectin-7 to endometrium throughout the menstrual cycle in women (normal fertility or with history of miscarriage) and in first trimester implantation sites. Galectin-7 serum levels were determined by ELISA. We used both endometrial epithelial-trophoblast cell lines and primary cells for cell-cell adhesion experiments. RESULTS: Galectin-7 immunolocalized to endometrial luminal and glandular epithelium in normally fertile women and was upregulated in epithelium and stroma of women with a history of miscarriage. Similarly, galectin-7 serum levels were elevated at 6 weeks gestation in women who subsequently miscarried compared to gestation matched controls. Exogenous galectin-7 reduced endometrial epithelial-trophoblast adhesion in cell-line and primary cell assays. However, when endometrial epithelial cells were isolated from women with endometrial disorders, galectin-7 increased epithelial-trophoblast adhesion. CONCLUSIONS: Galectin-7 is produced by endometrial epithelium and is abnormally elevated in the endometrium of women with a history of miscarriage. Serum levels may be useful as a predictive biomarker of miscarriage. Our data suggests that galectin-7 facilitates adhesion of the embryo to the endometrium and elevated galectin-7 may result in abnormal adhesion
Epidemiology of stroke and cerebral protection in patients undergoing transcatheter aortic valve replacement
The introduction into clinical practice of transcatheter aortic valve implantation (TAVI) has led to a significant change in the therapeutic paradigm for patients with valvular aortic stenosis. However, in parallel with the benefits obtained in prognosis and quality of life, an inherent risk of major cerebral thromboembolic events has been observed. In different studies this risk has been estimated between 2% and 6%. In order to reduce the incidence of cerebrovascular accidents during TAVI, several brain protection systems have been developed but, to date, none has obtained sufficient clinical evidence to be implemented on a large scale, and they are therefore used only in selected cases. Furthermore, periprocedural drug therapy and follow-up are still the subject of extensive discussion in the scientific community. This paper reviews the topic of stroke prevention in patients undergoing TAVI for both the periprocedural and postprocedural aspects
Social, ethical and behavioural aspects of COVID-19
Introduction: Vaccines and drugs for the treatment and prevention of COVID-19 require robust evidence generated from clinical trials before they can be used. Decisions on how to apply non-pharmaceutical interventions such as quarantine, self-isolation, social distancing and travel restrictions should also be based on evidence. There are some experiential and mathematical modelling data for these interventions, but there is a lack of data on the social, ethical and behavioural aspects of these interventions in the literature. Therefore, our study aims to produce evidence to inform (non-pharmaceutical) interventions such as communications, quarantine, self-isolation, social distancing, travel restrictions and other public health measures for the COVID-19 pandemic. Methods: The study will be conducted in the United Kingdom, Italy, Malaysia, Slovenia and Thailand. We propose to conduct 600-1000 quantitative surveys and 25-35 qualitative interviews per country. Data collection will follow the following four themes: (1) Quarantine and self-isolation (2) social distancing and travel restrictions (3) wellbeing and mental health (4) information, misinformation and rumours. In light of limitations of travel and holding in-person meetings, we will primarily use online/remote methods for collecting data. Study participants will be adults who have provided informed consent from different demographic, socio-economic and risk groups. Discussion: At the time of the inception of the study, United Kingdom, Italy, Malaysia, Slovenia and Thailand have initiated strict public health measures and varying degrees of 'lockdowns'; to curb the pandemic. These public health measures will change in the coming weeks and months depending on the number of cases of COVID-19 in the respective countries. The data generated from our study could inform these strategies in real time
Economic and social impacts of COVID-19 and public health measures: Results from an anonymous online survey in Thailand, Malaysia, the UK, Italy and Slovenia
Objectives To understand the impact of COVID-19 and public health measures on different social groups, we conducted a mixed-methods study in five countries (a € SEBCOV - social, ethical and behavioural aspects of COVID-19'). Here, we report the results of the online survey. Study design and statistical analysis Overall, 5058 respondents from Thailand, Malaysia, the UK, Italy and Slovenia completed the self-administered survey between May and June 2020. Poststratification weighting was applied, and associations between categorical variables assessed. Frequency counts and percentages were used to summarise categorical data. Associations between categorical variables were assessed using Pearson's χ 2 test. Data were analysed in Stata 15.0 Results Among the five countries, Thai respondents reported having been most, and Slovenian respondents least, affected economically. The following factors were associated with greater negative economic impacts: being 18-24 years or 65 years or older; lower education levels; larger households; having children under 18 in the household and and having flexible/no income. Regarding social impact, respondents expressed most concern about their social life, physical health, mental health and well-being. There were large differences between countries in terms of voluntary behavioural change, and in compliance and agreement with COVID-19 restrictions. Overall, self-reported compliance was higher among respondents who self-reported a high understanding of COVID-19. UK respondents felt able to cope the longest and Thai respondents the shortest with only going out for essential needs or work. Many respondents reported seeing news perceived to be fake, the proportion varying between countries, with education level and self-reported levels of understanding of COVID-19. Conclusions Our data showed that COVID-19 and public health measures have uneven economic and social impacts on people from different countries and social groups. Understanding the factors associated with these impacts can help to inform future public health interventions and mitigate their negative consequences. Trial registration number TCTR20200401002
The impact of COVID-19 non-pharmaceutical interventions on the lived experiences of people living in Thailand, Malaysia, Italy and the United Kingdom: a cross-country qualitative study
This qualitative study explores the impact of non-pharmaceutical interventions (NPIs), including social distancing, travel restrictions and quarantine, on lived experiences during the first wave of the COVID-19 pandemic in Thailand (TH), Malaysia (MY), Italy (IT) and the United Kingdom (UK). A total of 86 interviews (TH: n = 28; MY: n = 18; IT: n = 20; UK: n = 20) were conducted with members of the public, including healthcare workers (n = 13). Participants across countries held strong views on government imposed NPIs, with many feeling measures lacked clarity. Most participants reported primarily negative impacts of NPIs on their lives, including through separation, isolation and grief over missed milestones; work-related challenges and income loss; and poor mental health and wellbeing. Nonetheless, many also experienced inadvertent positive consequences, including more time at home to focus on what they most valued in life; a greater sense of connectedness; and benefits to working life. Commonly employed coping strategies focused on financial coping (e.g. reducing spending); psycho-emotional coping (e.g. engaging in spiritual practices); social coping and connectedness (e.g., maintaining relationships remotely); reducing and mitigating risks (e.g., changing food shopping routines); and limiting exposure to the news (e.g., checking news only occasionally). Importantly, the extent to which participants' lived experiences were positive or negative, and their ability to cope was underpinned by individual, social and economic factors, with the analysis indicating some salient differences across countries and participants. In order to mitigate negative and unequal impacts of NPIs, COVID-19 policies will benefit from paying closer attention to the social, cultural and psychological-not just biological-vulnerabilities to, and consequences of public health measures
Drug-coated balloon: Long-term outcome from a real world three-center experience
In-stent restenosis (ISR) and diffuse small vessel disease still represent challenging subsets for percutaneous coronary interventions, also in the new-generation DES era. We aim at reporting on the long-term clinical outcome of drug-coated balloons (DCB) in all-comers population