197 research outputs found
A GIS-Based Methodology for Speedy Energy Efficiency Mapping: A Case Study in Bologna
The paper reports a methodology developed to map energy consumption of the building stock at the urban scale on a GIS environment. Energy consumption has been investigated, focusing on the shift from the individual building scale to the district one with the purpose of identifying
larger homogenous energy use areas for addressing policies and plans to improve the quality and the performance levels at the city scale. The urban planning zoning concept was extended to the energy issue to include the energy behavior of each zone that depends on the performance of its
individual buildings. The methodology generates GIS maps providing a district scale visualization of energy consumption according to shared criteria. A case study in Bologna city (Italy) is provided. In the specific case, the last update of Emilia-Romagna regional urban planning regulation required
a mapping action regarding energy efficiency of homogeneous urban portions defined by the General Urban Plan. The main achieved results are (a) a methodology to identify homogeneous areas for analyzing energy consumption; (b) an updated energy map of Bologna Municipality
Outdoor Wellbeing and Quality of Life: A Scientific Literature Review on Thermal Comfort
While indoor comfort represents a widely investigated research topic with relation to sustainable development and energy-demand reduction in the built environment, outdoor comfort remains an open field of study, especially with reference to the impacts of climate change and the quality of life for inhabitants, particularly in urban contexts. Despite the relevant eorts spent in the last few decades to advance the understanding of phenomena and the knowledge in this specific field, which obtained much evidence for the topic\u2019s relevance, a comprehensive picture of the studies, as well as a classification of the interconnected subjects and outcomes, is still lacking. This paper reports the outcomes of a literature review aimed at screening the available resources dealing with outdoor thermal comfort, in order to provide a state-of-the-art review that identifies the main topics focused by the researchers, as well as the barriers in defining suitable indexes for assessing thermal comfort in outdoor environments. Although several accurate models and software are available to quantify outdoor human comfort, the evocated state of mind of the final user still remains at the core of this uncertain process
Preliminary observations about white shark's (Carcharodon carcharias) discriminatory patterns during surface predatory activity and type of approach
The aim of the present study was to gather information on the behaviour of great white shark Carcharodon carcharias during surface predatory activities. According to the present results, vision plays an important role in feeding patterns and appears correlated to weather conditions
Ultrasound tissue characterization detectspreclinical myocardial structural changes inchildren affected by Duchenne muscular dystrophy
AbstractObjectivesOur goal was to identify early changes in myocardial physical properties in children with Duchenne muscular dystrophy (DMDch).BackgroundDuchenne muscular dystrophy (DMD) is caused by the absence of dystrophin, which triggers complex molecular and biological events in skeletal and cardiac muscle tissues. Although about 30% of patients display overt signs of cardiomyopathy in the late stage of the disease, it is unknown whether changes in myocardial physical properties can be detected in the early (preclinical) stages of the disease.MethodsWe performed an ultrasonic tissue characterization (UTC) analysis of myocardium in DMDch with normal systolic myocardial function and no signs of cardiomyopathy. Both the cyclic variation of integrated backscatter (cvIBS) and the calibrated integrated backscatter (cIBS) were assessed in 8 myocardial regions of 20 DMDch, age 7 ± 2 years (range 4 to 10 years), and in 20 age-matched healthy controls.ResultsWe found large differences in the UTC data between DMDch and controls; the mean value of cvIBS was 4.4 ± 1.5 dB versus 8.8 ± 0.8 dB, whereas the mean value of cIBS was 36.4 ± 7.1 dB versus 26.9 ± 2.0 dB (p < 10−6for both). In DMDch, all eight sampled segments showed cIBS mean values to be significantly higher and cvIBS mean values to be significantly lower than those in the controls. Finally, interindividual differences were greater in DMDch than in controls for both parameters.ConclusionsThe myocardium in DMDch displays UTC features different from those in healthy controls. These results show that lack of dystrophin is commonly associated with changes in myocardial features well before the onset of changes of systolic function and overt cardiomyopathy
Applying a Comprehensive Model for Single-Ring Infiltration: Assessment of Temporal Changes in Saturated Hydraulic Conductivity and Physical Soil Properties
Modeling agricultural systems, from the point of view of saving and optimizing water,
is a challenging task, because it may require multiple soil physical and hydraulic measurements to
investigate the entire crop cycle. The Beerkan method was proposed as a quick and easy approach to
estimate the saturated soil hydraulic conductivity, Ks. In this study, a new complete three-dimensional
model for Beerkan experiments recently proposed was used. It consists of thirteen different calculation
approaches that differ in estimating the macroscopic capillary length, initial (θi) and saturated (θs)
soil water contents, use transient or steady-state infiltration data, and different fitting methods to
transient data. A steady-state version of the simplified method based on a Beerkan infiltration run
(SSBI) was used as the benchmark. Measurements were carried out on five sampling dates during
a single growing season (from November to June) in a long-term experiment in which two soil
management systems were compared, i.e., minimum tillage (MT) and no tillage (NT). The objectives
of this work were (i) to test the proposed new model and calculation approaches under real field
conditions, (ii) investigate the impact of MT and NT on soil properties, and (iii) obtain information
on the seasonal variability of Ks and other main soil physical properties (θi, soil bulk density, ρb, and
water retention curve) under MT and NT. The results showed that the model always overestimated Ks
compared to SSBI. Indeed, the estimated Ks differed by a factor of 11 when the most data demanding
(A1) approach was considered by a factor of 4–8, depending on the transient or steady-state phase
use, when A3 was considered and by a practically negligible factor of 1.0–1.9 with A4. A relatively
higher seasonal variability was detected for θi at the MT than NT system. Under both MT and NT, ρb
did not change between November and April but increased significantly until the end of the season.
The selected calculation approaches provided substantially coherent information on Ks seasonal
evolution. Regardless of the approach, the results showed a temporal stability of Ks at least from early
April to June under NT; conversely, the MT system was, overall, more affected by temporal changes
with a relative stability at the beginning and middle of the season. These findings suggest that a
common sampling time for determining Ks could be set at early spring. Soil management affected the
soil properties, because the NT system was significantly wetter and more compact than MT on four
out of five dates. However, only NT showed a significantly increasing correlation between Ks and
the modal pore diameter, suggesting the presence of a relatively smaller and better interconnected
pore network in the no-tilled soil. This study confirms the need to test infiltration models under real
field conditions to evaluate their pros and cons. The Beerkan method was effective for intensive soil
sampling and accurate field investigations on the temporal variability of Ks
Therapeutic effects elicited by the probiotic Lacticaseibacillus rhamnosus GG in children with atopic dermatitis. The results of the ProPAD trial
Atopic dermatitis (AD) is a chronic inflammatory skin disease affecting up to 20% of the pediatric population associated with alteration of skin and gut microbiome. Probiotics have been proposed for AD treatment. The ProPAD study aimed to investigate the therapeutic effects of the probiotic Lacticaseibacillus rhamnosus GG (LGG) in children with AD
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