354 research outputs found
Efficacy of swm appliance in the expression of first-, second- and third-order information in Class I and Class II
To assess the efficacy of a multibracket appliance?Straight-wire Mirabella (SWM) prescription?in terms of achieving the ideal first-, second- and third-order values proposed by Andrews. A total sample of 46 Caucasian subjects was divided into two groups: 23 with class I malocclusion (Group 1), and 23 with class II malocclusion (Group 2). The treatment protocol involved fixed multibracket appliances?SWM prescription?for both groups, with the addition of class II elastics for Group 2. Values for ?U1-PP, ?IMPA, in-out, tip and torque were measured on digital scans, and the results obtained were compared with the ideal values proposed by Andrews. Statistically significant differences were revealed between the entire sample and Andrews? values for: in-out on upper lateral incisors and upper canines; tip on the upper first premolars, upper second premolars, upper first molars and upper canines; and torque on the lower central incisors, lower lateral incisors, lower canines and lower first premolars. However, comparison of Groups 1 and 2 revealed statistically significant differences only at the lower lateral incisors. The use of class II elastics influenced ?IMPA values, but not ?U1-PP. The efficacy of the multibracket appliance?SWM prescription?in expressing first- second- and, to a lesser extent, third-order information was demonstrated in both class I and class II malocclusions. Class II elastics only influenced the third-order expression on the lower lateral incisors and the ?IMPA
Evaluation of Erythrocytes, Platelets, and Serum Iron Profile in Dogs with Chronic Enteropathy
The aim of this study is to evaluate iron status, erythrocyte, and platelet modifications in dogs with chronic enteropathy (CE). Dogs were grouped as food-responsive diarrhea (FRD, n = 11), antibiotic-responsive diarrhea (ARD, n = 5), and steroid-responsive diarrhea (SRD, n = 6) relating to therapeutic-response. Clinical and haematological findings, evidence of gastrointestinal blood loss, and iron metabolism were evaluated before and after treatment. A mild normocytic or microcytic anemia and thrombocytosis were identified, respectively in 18.0% and 31.8% of CE dogs. No significant differences between pre- and posttreatment of hematocrit, haemoglobin, and mean corpuscular volume, platelet count and mean platelet volume were found. Statistical analysis pointed out significant differences between pre- and posttreatment in serum iron (P < .03) and unsaturated iron binding capacity (UIBC) (P < .01). No significant correlations were found between these parameters and canine Inflammatory Bowel Disease activity index and pattern of CE as well
Dentoskeletal effects of the bitejumping appliance and the twin-block appliance in the treatment of skeletal class ii malocclusion: A retrospective controlled clinical trial
The current retrospective controlled trial aimed to compare the dentoskeletal effects of the Bite-Jumping (BJ) and the Twin- Block Appliance (TB) in the treatment of skeletal Class II malocclusion. The sample was screened for eligibility criteria including skeletal and dental Class II malocclusion; Cervical Vertebral Maturation at Stage 3 at treatment start, and Func- tional orthopedic treatment with either a TB or BJ appliances. Twenty-three patients treated with TB, and twenty-three treated with BJ were included. Cephalometric data were compared with a control group of 15 untreated subjects retrieved from the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection. Baseline character- istics were similar between groups. A significant increase for the AO-BO dimension, and a significant decrease in the over- jet, were registered for both study groups respect to controls. TB was more effective than BJ in increasing the mandibu- lar length (Co-Gn), in reducing the ANB angle and changing the SNB angle. The resulting differences between the two groups could be attributed to the different appliances. In conclusion, both appliances demonstrated a clinical efficacy in treating Class II. TB seems therefore better indicated, respect to BJ, in Class II cases with a predominant component of mandibular hypoplasia
Exploiting Nanoparticles to Improve the Properties of Bitumens and Asphalts: At What Extent Is It Really Worth It?
Asphalt concretes are materials used worldwide. It is well-known that in such materials the minor component, the bitumen, plays the most important role since it binds the high fraction (>95%) of inorganic macrometer-sized particles ensuring a coherent material fit for uses in road pavement. Additives can be used to increase the overall rheological properties, with high benefits in terms of resistance to mechanical stress and to ageing. Among these, nanoparticles have recently been considered as very effective additives in increasing the overall performance, increasing the viscosity, the rutting parameter and the recovery from deformation. However, they are expensive, so a delicate equilibrium between costs and benefits must be found for large-scale uses. In this framework, we furnish our critical analysis of the state-of-the art technologies used for improving the bitumen performances by means of nanoparticles with an eye to eventual added-values (like anti-oxidant effect, antistripping properties, or UV radiation screening which avoids radiation-induced ageing…). We will critically consider the costs involved in their use and we will give our opinion about vanguard techniques which can be fit for the analysis of nanoparticles-containing bitumens and asphalts. Interesting perspectives will be also given for future research and applications
Improved diastolic function in type 2 diabetes after a six month liraglutide treatment
AbstractAimsTo investigate whether liraglutide improves diastolic function in type 2 diabetes.MethodsThirty-seven patients with type 2 diabetes who began liraglutide therapy between June 2013 and May 2014 were enrolled in this observational, prospective study. 26 patients received liraglutide therapy for at least 6months. The remaining 11 patients withdrew from liraglutide therapy during the first month, were started on other hypoglycaemic therapies and formed the control group. Anthropometric, metabolic and echocardiographic parameters including pulsed wave tissue Doppler imaging were evaluated at baseline and at 6months.ResultsIn the liraglutide group the early diastolic mitral annulus velocity on the lateral (e-lat) and medial (e-med) sides of the mitral annulus increased from 9.2±3.4 to 11.6±4.7cm/s (p<0.001) and from 6.9±1.7 to 8.4±2.6cm/s (p<0.003), respectively. The ratio of early-to-late velocities on the lateral and medial sides of the mitral annulus increased from 0.7±0.3 to 0.9±0.4 (p<0.001) and from 0.5±0.1 to 0.6±0.1 (p<0.02), respectively. The ratio of early diastolic mitral inflow velocity to early diastolic myocardial relaxation velocity decreased from 10.7±4.3 to 8.5±2.5 (p<0.005). No improvements in diastolic function was detected in the control group. Glucose control improved similarly in both groups: HA1bc −1.5% (−17mmol/mol) vs −1.3% (−14mmol/mol), p=0.67.ConclusionsIn patients with type 2 diabetes, 6months liraglutide treatment was associated with a significant improvement in diastolic function
Anomaly detection in laser-guided vehicles' batteries: a case study
Detecting anomalous data within time series is a very relevant task in
pattern recognition and machine learning, with many possible applications that
range from disease prevention in medicine, e.g., detecting early alterations of
the health status before it can clearly be defined as "illness" up to
monitoring industrial plants. Regarding this latter application, detecting
anomalies in an industrial plant's status firstly prevents serious damages that
would require a long interruption of the production process. Secondly, it
permits optimal scheduling of maintenance interventions by limiting them to
urgent situations. At the same time, they typically follow a fixed prudential
schedule according to which components are substituted well before the end of
their expected lifetime. This paper describes a case study regarding the
monitoring of the status of Laser-guided Vehicles (LGVs) batteries, on which we
worked as our contribution to project SUPER (Supercomputing Unified Platform,
Emilia Romagna) aimed at establishing and demonstrating a regional
High-Performance Computing platform that is going to represent the main Italian
supercomputing environment for both computing power and data volume.Comment: This paper contains a report on the research work carried out as a
collaboration between the Department of Engineering and Architecture of the
University of Parma and Elettric80 spa within project SUPER (Supercomputing
Unified Platform Emilia Romagna
Fine-Grained Agent-Based Modeling to Predict Covid-19 Spreading and Effect of Policies in Large-Scale Scenarios
Modeling and forecasting the spread of
COVID-19 remains an open problem for several reasons.
One of these concerns the difficulty to model a complex
system at a high resolution (fine-grained) level at which the
spread can be simulated by taking into account individual
features such as the social structure, the effects of the
governments’ policies, age sensitivity to Covid-19, maskwearing habits and geographical distribution of susceptible
people. Agent-based modeling usually needs to find an optimal trade-off between the resolution of the simulation and
the population size. Indeed, modeling single individuals
usually leads to simulations of smaller populations or the
use of meta-populations. In this article, we propose a solution to efficiently model the Covid-19 spread in Lombardy,
the most populated Italian region with about ten million
people. In particular, the model described in this paper is,
to the best of our knowledge, the first attempt in literature to model a large population at the single-individual
level. To achieve this goal, we propose a framework that
implements: i. a scale-free model of the social contacts
combining a sociability rate, demographic information, and
geographical assumptions; ii. a multi-agent system relying
on the actor model and the High-Performance Computing
technology to efficiently implement ten million concurrent
agents. We simulated the epidemic scenario from January
to April 2020 and from August to December 2020, modeling
the government’s lockdown policies and people’s maskwearing habits. The social modeling approach we propose
could be rapidly adapted for modeling future epidemics at
their early stage in scenarios where little prior knowledge
is available
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