Search results for " case"
showing 10 items of 871 documents
A compliant visco-plastic particle contact model based on differential variational inequalities
2013
This work describes an approach to simulate contacts between threedimensional shapes with compliance and damping using the framework of the differential variational inequality theory. Within the context of nonsmooth dynamics, we introduce an extension to the classical set-valued model for frictional contacts between rigid bodies, allowing contacts to experience local compliance, viscosity, and plasticization. Different types of yield surfaces can be defined for various types of contact, a versatile approach that contains the classic dry Coulomb friction as a special case. The resulting problem is a differential variational inequality that can be solved, at each integration time step, as a v…
Simplified Modeling of Radiant Fields in Heterogeneous Photoreactors. 2. Limiting “Two-Flux” Model for the Case of Reflectance Greater Than Zero
1997
In the first part of this work a simple model for the description of the radiant field in heterogeneous photoreactors was developed, based on the assumption of zero reflectance of the particles. In this second part of the investigation a limiting model is developed in which the above hypothesis is removed. In this last model, scattering phenomena are dealt with in a very simple “two-flux” way, so that analytical solutions are obtained again. The case here developed is the same as in part 1, namely slab geometry with orthogonal parallel irradiation, giving special reference to the important case of semi-infinite reactor thickness. Both cases of solid catalysts with single particle size and w…
Layer-Wise Discontinuous Galerkin Methods for Piezoelectric Laminates
2020
In this work, a novel high-order formulation for multilayered piezoelectric plates based on the combination of variable-order interior penalty discontinuous Galerkin methods and general layer-wise plate theories is presented, implemented and tested. The key feature of the formulation is the possibility to tune the order of the basis functions in both the in-plane approximation and the through-the-thickness expansion of the primary variables, namely displacements and electric potential. The results obtained from the application to the considered test cases show accuracy and robustness, thus confirming the developed technique as a supplementary computational tool for the analysis and design o…
Evolución jurisprudencial de la protección ante el discurso del odio en España en la última década
2012
El discurso de odio es un problema que en los últimos años está adquiriendo un alta relevancia, tanto en el plano internacional, como en el nacional. El aumento de la utilización de la libertad de expresión con el objetivo de legitimar la provocación a la xenofobia, en particular, en contra de minorías sociales, es una actitud que está poniendo en peligro la cohesión social de las sociedades actuales. Es por esto que aquí se estudia la jurisprudencia que diversos órganos han dictado en España, con el objetivo de observar cuál ha sido su evolución durante la última década. ABSTRACT. Hate Speech is an increasing problem that, in the last decade, is acquiring a special relevance, at both the i…
Effect of culture parameters on the production of styrene (vinyl benzene) and 1-octene-3-ol by Penicillium caseicolum
1992
SummaryPenicillium caseicolum has been shown to completely synthesize styrene. A medium was developed to test the capacity of different strains for this synthesis. In a synthetic medium, styrene production began only after the glucose was entirely consumed. This production depended on storage temperature and occurred simultaneously with 1-octene-3-ol formation.
Refleksja na temat terapeutycznych aspektów twórczości literackiej dzieci w młodszym wieku szkolnym
2016
Celem głównym prezentowanych na potrzeby opracowania badań jest: określenie terapeutycznych aspektów twórczości literackiej dzieci w młodszym wieku szkolnym. W początkowej części artykułu przedstawiono wybrane rozważania teoretyczne skupiające się na zagadnieniu twórczości człowieka, jej roli w procesie autokreacji oraz jej wymiaru terapeutycznego. Stanowią one tło dla badań własnych, opisanych w dalszej części tekstu. W badaniach wykorzystano metodę indywidualnych przypadków, będącą odmianą metody biograficznej. Przeprowadzając badania z zastosowaniem metody indywidualnych przypadków, posłużono się technikami wywiadu oraz analizy wytworów. Narzędziem badawczym w technice wywiadu był kwesti…
Morte improvvisa nell'acqua: problemi diagnostici. Presentazione di un caso
2013
Da decenni è aperto un ampio dibattito sulla necessità di distinguere i soggetti chiaramente morti per sindrome asfittica da annegamento e i soggetti rinvenuti morti nell’acqua, per i quali, nel 1999 Modell et al. avevano proposto l’appropriatezza del concetto di “annegamento senza aspirazione”. Questo problema nasce, talora, dal mancato riscontro, in corso di indagini autoptiche e anatomo-isto-patologiche eseguite su soggetti rinvenuti cadavere in acqua, di quadri inequivocabili che consentono di porre diagnosi di certezza di morte per asfissia da annegamento, altre volte, dal riscontro di condizioni patologiche che possono avere influito e/o avere determinato il decesso in acqua. E’ pur v…
Bone marrow-derived progenitors are greatly reduced in patients with severe COPD and low-BMI.
2009
Chronic obstructive pulmonary disease (COPD) patients have reduced circulating hemopoietic progenitors. We hypothesized that severity of COPD parallels the decrease in progenitors and that the reduction in body mass index (BMI) could be associated with more severe bone marrow dysfunction. We studied 39 patients with moderate to very severe COPD (18 with low-BMI and 21 with normal-BMI) and 12 controls. Disease severity was associated to a greater reduction in circulating progenitors. Proangiogenetic and inflammatory markers correlated with disease severity parameters. Compared to normal-BMI patients, low-BMI patients showed: greater reduction in circulating progenitors; higher VEGF-A, VEGF-C…
A two-stage genome-wide association study of sporadic amyotrophic lateral sclerosis
2009
The cause of sporadic amyotrophic lateral sclerosis (ALS) is largely unknown, but genetic factors are thought to play a significant role in determining susceptibility to motor neuron degeneration. To identify genetic variants altering risk of ALS, we undertook a two-stage genome-wide association study (GWAS): we followed our initial GWAS of 545 066 SNPs in 553 individuals with ALS and 2338 controls by testing the 7600 most associated SNPs from the first stage in three independent cohorts consisting of 2160 cases and 3008 controls. None of the SNPs selected for replication exceeded the Bonferroni threshold for significance. The two most significantly associated SNPs, rs2708909 and rs2708851 …
Mutual inductance for an explicitly finite number of turns
2011
Published version of an article published in Progress In Electromagnetics Research B, 28, 273-287. Also available from the publisher at http://www.jpier.org/pierb/pier.php?paper=10110103 Non coaxial mutual inductance calculations, based on a Bessel function formulation, are presented for coils modelled by an explicitly finite number of circular turns. The mutual inductance of two such turns can be expressed as an integral of a product of three Bessel functions and an exponential factor, and it is shown that the exponential factors can be analytically summed as a simple geometric progression, or other related sums. This allows the mutual inductance of two thin solenoids to be expressed as an…