A symbolical approach to exhibit design. The case of "Museo Delta Antico" in Comacchio

After a design competition held in February 2014, the “NMC Comacchio” design group, formed by young Italian architects, was charged with designing a new archaeological museum in Comacchio, on the Adriatic coast of Italy. This paper deals with the design methodology experimented in this museum: the project is based on a “symbolical approach” in exhibit design, which tries to balance both didactic and emotional aspects of the exhibition, focusing on the comprehension of archaeological heritage and the relation between territory and cultural heritage. The museum, named “Museo Delta Antico”, opened in 2017 with very good acknowledgement of critics and audiences

A symbolical approach to exhibit design. The case of “Museo Delta Antico” in Comacchio

After a design competition held in February 2014, the “NMC Comacchio” design group, formed by young Italian architects, was charged with designing a new archaeological museum in Comacchio, on the Adriatic coast of Italy. This paper deals with the design methodology experimented in this museum: the project is based on a “symbolical approach” in exhibit design, which tries to balance both didactic and emotional aspects of the exhibition, focusing on the comprehension of archaeological heritage and the relation between territory and cultural heritage. The museum, named “Museo Delta Antico”, opened in 2017 with very good acknowledgement of critics and audiences

MECANISMOS DE ADAPTAÇÃO AO TREINAMENTO COM ELETROESTIMULAÇÃO TRANSCUTÂNEA A ALTAS E MÉDIAS FREQÜÊNCIAS

A eletroestimulação transcutânea (ETC) vem sendo utilizada com êxito na reabilitação após períodos de imobilização ou inatividade. Esta técnica de treinamento começou a ser estudada no esporte a partir da década de 70 na União Soviética e mostrou-se capaz de causar ganhos na força muscular em indivíduos atletas e sedentários. Os mecanismos responsáveis por esses ganhos de força ainda não estão totalmente elucidados. Os objetivos do presente trabalho são: 1) discutir as especificidades do treinamento com ETC e 2) identificar os possíveis mecanismos de adaptação responsáveis pelos ganhos de força após treinamento de ETC a médias e altas freqüências. A intensidade de estímulo determina o número de unidades motoras (UM) que são ativadas, quanto maior a intensidade maiores os ganhos de força. A freqüência de estimulação é outro fator que interfere diretamente nos resultados observados. Baixas freqüências (1-49Hz) tornam as fibras musculares mais lentas e resistentes. Já freqüências médias (50-200Hz) e altas (>200Hz) podem causar elevação da força e da velocidade de contração da fibra muscular. A ETC causa um recrutamento preferencial das UM rápidas, o que pode favorecer a obtenção de ganhos de força muscular. Assim como no treinamento com contrações voluntárias, a ETC pode causar adaptações morfológicas ou neurais. Contudo, a temporalidade dessas adaptações deve ser determinada. TRAINING ADAPTATION AFTER TRANSCUTANEOUS ELECTRICAL SIMULATION WITH HIGH AND MEDIUM FREQUENCY Abstract Electrical stimulation (ES) has been used for reabilithation and after inactivity periods to recover strength. Its effects started to be studied in athletes and sedentaries in the 70s by the former CCPP. The aims of this review were: 1) discuss ES training characteristics, and 2) identify the possible strength adaptations at high and medium frequencies. Strength gains are modulated by two factors: Stimuli intesity, which modulates the number of activated motor units, and the frequency of stimulation. Muscle fibers become slower and increase time to fatigue with low frequency stimulation (1-49Hz). On the other hand, medium (50-200Hz) and high frequencies (>200Hz) increase muscle fiber force and speed. Electrical stimulation seems to produce a reversal in motor unit recruitment, which may produce greater strength gains. The mechanisms responsible for these strength gains are both morphological and neural. The time frame of each one of these adaptations has to be determined

NNLO Logarithmic Expansions and Precise Determinations of the Neutral Currents near the Z Resonance at the LHC: The Drell-Yan case

We present a comparative study of the invariant mass and rapidity distributions in Drell-Yan lepton pair production, with particular emphasis on the role played by the QCD evolution. We focus our study around the Z resonance ($50 <Q < 200$ GeV) and perform a general analysis of the factorization/renormalization scale dependence of the cross sections, with the two scales included both in the evolution and in the hard scatterings. We also present the variations of the cross sections due to the errors on the parton distributions (pdf's) and an analysis of the corresponding $K$-factors. Predictions from several sets of pdf's, evolved by MRST and Alekhin are compared with those generated using \textsc{Candia}, a NNLO evolution program that implements the theory of the logarithmic expansions, developed in a previous work. These expansions allow to select truncated solutions of varying accuracy using the method of the $x$-space iterates. The evolved parton distributions are in good agreement with other approaches. The study can be generalized for high precision searches of extra neutral gauge interactions at the LHC.Comment: 75 pages,30 figures, 30 table

Engineering of chitosan-hydroxyapatite-magnetite hierarchical scaffolds for guided bone growth

Bioabsorbable materials have received increasing attention as innovative systems for the development of osteoconductive biomaterials for bone tissue engineering. In this paper, chitosan-based composites were synthesized adding hydroxyapatite and/or magnetite in a chitosan matrix by in situ precipitation technique. Composites were characterized by optical and electron microscopy, thermogravimetric analyses (TGA), x-ray diffraction (XRD), and in vitro cell culture studies. Hydroxyapatite and magnetite were found to be homogeneously dispersed in the chitosan matrix and the composites showed superior biocompatibility and the ability to support cell attachment and proliferation; in particular, the chitosan/hydroxyapatite/magnetite composite (CS/HA/MGN) demonstrated superior bioactivity with respect to pure chitosan (CS) and to the chitosan/hydroxyapatite (CS/HA) scaffolds