1,166 research outputs found
Normazione imperiale e patrimoni femminili
Il presente lavoro propone la lettura di un campione di fonti riguardanti le disposizioni mortis causa ed atti di liberalità aventi ad oggetto patrimoni femminili, a partire dal IV-V secolo d.C., quale specchio di una capacità patrimoniale al femminile e di un conseguente atteggiamento di “libertà” delle stesse, presente e costante, nello spaccato cronologico individuato. Il fenomeno della capacità patrimoniale viene analizzato dal punto di vista dinamico, rispetto alle attività dispositive, verso le quali fu sensibile anche la normazione imperiale, come conferma dell’esistenza di stratificazioni patrimoniali a vantaggio di soggetti tenuti in ombra. La vivacità delle disposizioni a favore di poveri, chierici, fu influenzata dall’evangelizzazione di interi Circoli femminili e dalle radicali idee degli ecclesiastici, che predicavano privazioni ed ascetismo fin dalla più tenera età. Gli interventi imperiali – ovviamente avevano ad oggetto mulieres di alto rango – tesero ad arginare la dispersione dei patrimoni, a vantaggio di quello della Chiesa, anche se non sortirono, il più delle volte i risultati sperati
Trichoderma harzianum cerato-platanin enhances hydrolysis of lignocellulosic materials
Considering its worldwide abundance, cellulose can be a suitable candidate to replace the fossil oil-based materials, even if its potential is still untapped, due to some scientific and technical gaps. This work offers new possibilities demonstrating for the first time the ability of a cerato-platanin, a small fungal protein, to valorize lignocellulosic Agri-food Wastes. Indeed, cerato-platanins can loosen cellulose rendering it more accessible to hydrolytic attack. The cerato-platanin ThCP from a marine strain of Trichoderma harzianum, characterized as an efficient biosurfactant protein, has proven able to efficiently pre-treat apple pomace, obtaining a sugar conversion yield of 65%. Moreover, when used in combination with a laccase enzyme, a notable increase in the sugar conversion yield was measured. Similar results were also obtained when other wastes, coffee silverskin and potato peel, were pre-treated. With respect to the widespread laccase pre-treatments, this new pre-treatment approach minimizes process time, increasing energy efficiency
Metagenomes in the borderline ecosystems of the Antarctic cryptoendolithic communities
Antarctic cryptoendolithic communities are microbial ecosystems dwelling inside rocks of the Antarctic desert. We present the first 18 shotgun metagenomes from these communities to further characterize their composition, biodiversity, functionality, and adaptation. Future studies will integrate taxonomic and functional annotations to examine the pathways necessary for life to evolve in the extreme
Genome resequencing reveals multiscale geographic structure and extensive linkage disequilibrium in the forest tree Populus trichocarpa
This is the publisher’s final pdf. The article is copyrighted by the New Phytologist Trust and published by John Wiley & Sons, Inc. It can be found at: http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291469-8137. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work.•Plant population genomics informs evolutionary biology, breeding, conservation and bioenergy feedstock development. For example, the detection of reliable phenotype–genotype associations and molecular signatures of selection requires a detailed knowledge about genome-wide patterns of allele frequency variation, linkage disequilibrium and recombination.\ud
•We resequenced 16 genomes of the model tree Populus trichocarpa and genotyped 120 trees from 10 subpopulations using 29 213 single-nucleotide polymorphisms.\ud
•Significant geographic differentiation was present at multiple spatial scales, and range-wide latitudinal allele frequency gradients were strikingly common across the genome. The decay of linkage disequilibrium with physical distance was slower than expected from previous studies in Populus, with r² dropping below 0.2 within 3–6 kb. Consistent with this, estimates of recent effective population size from linkage disequilibrium (N[subscript e] ≈ 4000–6000) were remarkably low relative to the large census sizes of P. trichocarpa stands. Fine-scale rates of recombination varied widely across the genome, but were largely predictable on the basis of DNA sequence and methylation features.\ud
•Our results suggest that genetic drift has played a significant role in the recent evolutionary history of P. trichocarpa. Most importantly, the extensive linkage disequilibrium detected suggests that genome-wide association studies and genomic selection in undomesticated populations may be more feasible in Populus than previously assumed
Artificial Intelligence in Acute Ischemic Stroke Subtypes According to Toast Classification: A Comprehensive Narrative Review
The correct recognition of the etiology of ischemic stroke (IS) allows tempestive interventions in therapy with the aim of treating the cause and preventing a new cerebral ischemic event. Nevertheless, the identification of the cause is often challenging and is based on clinical features and data obtained by imaging techniques and other diagnostic exams. TOAST classification system describes the different etiologies of ischemic stroke and includes five subtypes: LAAS (large-artery atherosclerosis), CEI (cardio embolism), SVD (small vessel disease), ODE (stroke of other determined etiology), and UDE (stroke of undetermined etiology). AI models, providing computational methodologies for quantitative and objective evaluations, seem to increase the sensitivity of main IS causes, such as tomographic diagnosis of carotid stenosis, electrocardiographic recognition of atrial fibrillation, and identification of small vessel disease in magnetic resonance images. The aim of this review is to provide overall knowledge about the most effective AI models used in the differential diagnosis of ischemic stroke etiology according to the TOAST classification. According to our results, AI has proven to be a useful tool for identifying predictive factors capable of subtyping acute stroke patients in large heterogeneous populations and, in particular, clarifying the etiology of UDE IS especially detecting cardioembolic sources
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Large-scale discovery of enhancers from human heart tissue.
Development and function of the human heart depend on the dynamic control of tissue-specific gene expression by distant-acting transcriptional enhancers. To generate an accurate genome-wide map of human heart enhancers, we used an epigenomic enhancer discovery approach and identified ∼6,200 candidate enhancer sequences directly from fetal and adult human heart tissue. Consistent with their predicted function, these elements were markedly enriched near genes implicated in heart development, function and disease. To further validate their in vivo enhancer activity, we tested 65 of these human sequences in a transgenic mouse enhancer assay and observed that 43 (66%) drove reproducible reporter gene expression in the heart. These results support the discovery of a genome-wide set of noncoding sequences highly enriched in human heart enhancers that is likely to facilitate downstream studies of the role of enhancers in development and pathological conditions of the heart
Diagnóstico molecular de Neisseria gonorrhoeae en Mendoza
Neisseria gonorrheae es una bacteria de transmisión sexual que afecta exclusivamente a humanos. Esta bacteria coloniza las mucosas de la uretra, endocervix, tubo de Falopio, recto, conjuntiva faríngea. Las infecciones causadas en el aparato genital varían desde infecciones agudas de resolución favorable hasta enfermedad inflamatoria pélvica que cronifica provocando secuelas irreversibles como obstrucción tubárica y esterilidad. Incrementa además hasta 5 veces la transmisión del virus HIV. Entre otras implicaciones críticas en la salud reproductiva, también pueden causar embarazos ectópicos, abortos en el primer trimestre del embarazo y como se mencionó antes, esterilidad. El mayor riesgo para el recién nacido son las infecciones oculares que pueden derivar en ceguera.
La gonorrea es la segunda enfermedad de transmisión sexual de origen bacteriano más frecuente en el mundo En los últimos años se han incrementado el número de individuos infectados y la aparición de cepas resistentes a los antibióticos utilizados. La situación en Mendoza sigue las tendencias mundiales. Para su detección en la provincia se utilizan técnicas de cultivo. La detección temprana y rápida, por medio de la Reacción en Cadena de la Polimerasa es una herramienta necesaria para su diagnóstico
Parental willingness to have children vaccinated against COVID-19 in Geneva, Switzerland: a cross-sectional population-based study.
We aimed to examine factors associated with parental willingness to vaccinate their children against COVID-19.
We surveyed adults included in a digital longitudinal cohort study composed of participants in previous SARS-CoV-2 serosurveys conducted in Geneva, Switzerland. In February 2022, an online questionnaire collected information on COVID-19 vaccination acceptance, parental willingness to vaccinate their children aged ≥5 years and reasons for vaccination preference. We used multivariable logistic regression to assess the demographic, socioeconomic and health-related factors associated with being vaccinated and with parental intention to vaccinate their children.
We included 1,383 participants (56.8% women; 69.3% aged 35-49 years). Parental willingness to vaccinate their children increased markedly with the child's age: 84.0%, 60.9% and 21.2%, respectively, for parents of adolescents aged 16-17 years, 12-15 years and 5-12 years. For all child age groups, unvaccinated parents more frequently indicated not intending to vaccinate their children than vaccinated parents. Refusal to vaccine children was associated with having a secondary education (1.73; 1.18-2.47) relative to a tertiary education and with middle (1.75; 1.18-2.60) and low (1.96; 1.20-3.22) household income relative to high income. Refusal to vaccine their children was also associated with only having children aged 12-15 years (3.08; 1.61-5.91), aged 5-11 years (19.77; 10.27-38.05), or in multiple age groups (6.05; 3.22-11.37), relative to only having children aged 16-17 years.
Willingness to vaccinate children was high for parents of adolescents aged 16-17 years but decreased significantly with decreasing child age. Unvaccinated, socioeconomically disadvantaged parents and those with younger children were less likely to be willing to vaccinate their children. These results are important for vaccination programs and developing communication strategies to reach vaccine-hesitant groups, both in the context of COVID-19 and in the prevention of other diseases and future pandemics
Screening of fungal strains for cellulolytic and xylanolytic activities production and evaluation of brewers’ spent grain as substrate for enzyme production by selected fungi
Brewer’s spent grain (BSG), the solid residue of beer production, is attracting significant
attention as raw material for the production of added value substances, since until recently it was
mainly used as animal feed or deposited in landfills, causing serious environmental problems.
Therefore, this work aimed at developing a bioprocess using BSG as a substrate for the production of
cellulases and xylanases for waste saccharification and bioenergy production. Different fungi were
analyzed for their cellulolytic and xylanolytic abilities, through a first screening on solid media by
assessment of fungal growth and enzyme production on agar containing carboxylmethylcellulose or
xylan as the sole carbon source, respectively. The best cellulase and xylanase producers were subjected
to quantitative evaluation of enzyme production in liquid cultures. Aspergillus niger LPB-334 was
selected for its ability to produce cellulase and xylanase at high levels and it was cultivated on BSG
by solid state fermentation. The cellulase production reached a maximum of 118.04 8.4 U/g of dry
substrate after 10 days of fermentation, while a maximum xylanase production of 1315.15 37.5 U/g
of dry substrate was reached after 4 days. Preliminary characterization of cellulase and xylanase
activities and identification of the enzymes responsible were carried out
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