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Search Results: 1 - 10 of 325264 matches for " S. Perazza "
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Brain Reorganization following Intervention in Children with Congenital Hemiplegia: A Systematic Review
E. Inguaggiato,G. Sgandurra,S. Perazza,A. Guzzetta,G. Cioni
Neural Plasticity , 2013, DOI: 10.1155/2013/356275
Abstract: Noninvasive rehabilitation strategies for children with unilateral cerebral palsy are routinely used to improve hand motor function, activity, and participation. Nevertheless, the studies exploring their effects on brain structure and function are very scarce. Recently, structural neuroplasticity was demonstrated in adult poststroke patients, in response to neurorehabilitation. Our purpose is to review current evidence on the effects of noninvasive intervention strategies on brain structure or function, in children with unilateral cerebral palsy. The main literature databases were searched up to October 2013. We included studies where the effects of upper limb training were evaluated at neurofunctional and/or neurostructural levels. Only seven studies met our selection criteria; selected studies were case series, six using the intervention of the constraint-induced movement therapy (CIMT) and one used virtual reality therapy (VR). CIMT and VR seem to produce measurable neuroplastic changes in sensorimotor cortex associated with enhancement of motor skills in the affected limb. However, the level of evidence is limited, due to methodological weaknesses and small sample sizes of available studies. Well-designed and larger experimental studies, in particular RCTs, are needed to strengthen the generalizability of the findings and to better understand the mechanism of intervention-related brain plasticity in children with brain injury. 1. Introduction Unilateral cerebral palsy (U-CP) is the most common type of cerebral palsy (CP), with an incidence of 1 in 1000 live-births [1]. Typically, the upper limb (UL) is more involved than the lower, with impairments of spasticity, sensation, and reduced strength. Effective use of the arm and hand to reach, grasp, release, and manipulate objects is often compromised. Children with hemiplegia usually have the intellectual capacity to attend regular school; however, impaired arm function restricts their participation in educational, leisure, and later vocational roles [2]. U-CP can result from a wide variety of brain lesions, with respect to the timing of insults (acquired during the pre-, peri- or postnatal period), and the type of structural pathology (brain malformations, periventricular lesions, and corticosubcortical lesions) [3]. U-CP often leads to delays in motor development or deconditioning of the affected limb, as individuals are inclined to functional compensation with the intact limb rather than attempting to use the involved limb [4]; this may result in suppression of development of cortical representation
Relaciones de consenso y cooperación. El caso argentino. Desafíos desde la política pública
Roxana Perazza
El Cotidiano , 2011,
Abstract: El presente artículo alude a las relaciones entre los gobiernos y los sindicatos docentes y cómo éstas influyen en el dise o de las políticas públicas en el sector de la educación. Se hace referencia a la modificación de las normas laborales docentes, la cual para algunos gobiernos de la región significó un eje principal en la política dirigida hacia el sector. Argentina se encuentra entre los pocos países que no la ha reformado y está llevando a cabo un proceso singular desde el punto de vista de las relaciones gobierno-sindicatos docentes. Con avances normativos significativos en el área, se presenta un futuro cercano lleno de interrogantes y desafíos.
Frequency of species of Eimeria in females of the holstein-friesian breed at the post-weaning stage during autumn and winter
Bruhn, Fábio Raphael Pascoti;Lopes, Marcos Aurélio;Demeu, Fabiana Alves;Perazza, Caio Augusto;Pedrosa, Marcos Ferrazani;Guimar?es, Ant?nio Marcos;
Revista Brasileira de Parasitologia Veterinária , 2011, DOI: 10.1590/S1984-29612011000400008
Abstract: the frequency of species of the genus eimeria in a dairy herd in the municipality of boa esperan?a, southern region of the state of minas gerais was assessed. from 37 females of the friesian breed aged three to seven months, 259 feces samples were analyzed between may and september 2008. the examinations to quantify oocysts per gram of feces (opg) and identify eimeria species were conducted at the veterinary parasitology laboratory of the federal university of lavras. eleven species of eimeria were identified, namely: e. bovis (23.2%), e. zuernii (22.6%), e. ellipsoidalis (20.3%), e. cylindrica (14.1%), e. subspherica (5.4%), e. canadensis (3.5%), e. alabamensis (2.4%), e. auburnensis (2.4%), e. pellita (2.1%), e. brasiliensis (2%) and e. bukidnonensis (1.9%). e. bovis, e. zuernii and e. ellipsoidalis were the most frequent and the ones with the highest oocyst shedding over time (p < 0.05). differences in opg counts were found between most months studied (p < 0.05). the large number of eimeria species found, in particular e. bovis and e. zuernii, indicates that eimeria sp. has significant pathogenic potential in dairy cattle in the south of minas gerais.
Study of the Structural and Electrical Properties of Cr-Doped BiFeO3 Ceramic  [PDF]
S. S. Arafat, S. Ibrahim
Materials Sciences and Applications (MSA) , 2017, DOI: 10.4236/msa.2017.810051
Abstract: Multiferroic BiFe1-xCrxO3 (x = 0.2 and 0.4) ceramics were synthesized in a single phase. The effects of Cr3+ substitution on the crystal structure, dielectric permittivity and leakage current were investigated. Preliminary X-ray structural studies revealed that the samples had a rhombohedral perovskite crystal structure. The dielectric constant ε' significantly increased while the dielectric loss tanδ was substantially decreased with the increase in Cr3+ substitution. The temperature effect on the dielectric properties exhibited an anomaly corresponding to magneto-electric coupling in the samples and was shifted to lower temperatures with the increase in Cr3+ substitution. The leakage current density also reduced in magnitude with the increase in the Cr3+ substitution.
Degree Splitting of Root Square Mean Graphs  [PDF]
S. S. Sandhya, S. Somasundaram, S. Anusa
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.66086
Abstract: Let \"\" be an injective function. For a vertex labeling f, the induced edge labeling \"\" is defined by, \"\" or \"\"; then, the edge labels are distinct and are from \"\". Then f is called a root square mean labeling of G. In this paper, we prove root square mean labeling of some degree splitting graphs.
A Parameter Estimation Model of G-CSF: Mathematical Model of Cyclical Neutropenia  [PDF]
S. Balamuralitharan, S. Rajasekaran
American Journal of Computational Mathematics (AJCM) , 2012, DOI: 10.4236/ajcm.2012.21002
Abstract: We investigate the FFT (Fast Fourier Transform) model and G-CSF (granulocyte colony-stimulating factor) treatment of CN (Cyclical Neutropenia). We collect grey collies and normal dog’s data from CN and analyze the G-CSF treatment. The model develops the dynamics of circulating blood cells before and after the G-CSF treatment. This is quite natural and useful for the collection of laboratory data for investigation. The proposed interventions are practical. This reduces the quantity of G-CSF required for potential maintenance. This model gives us good result in treatment. The changes would be practical and reduce the risk side as well as the cost of treatment in G-CSF.
Synthesis, Thermal Behaviour, XRD, and Luminescent Properties of Lighter Lanthanidethiodipropionate Hydrates Containing Aminogunidine as Neutral Ligand  [PDF]
S. Packiaraj, S. Govindarajan
Open Journal of Inorganic Chemistry (OJIC) , 2014, DOI: 10.4236/ojic.2014.43006
Aminoguanidine lanthanide thiodipropionate hydrates of composition [Ln(Agun)2(tdp)3·nH2O], Agun = Aminoguanidine, tdp = thiodipropionic acid, where Ln = La, Pr, Nd and Sm if n = 2, have been prepared and characterized by physic-chemical techniques.
Fuzzy Based Intelligent Monitoring of Critical Lines in the Restructured Power Market  [PDF]
S. Rajasekaran, S. Sathiyamoorthy
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.79191
Abstract: Restructured electric market environment allows the power wheeling transactions between the power producers and customers to meet the growing load demand. This will lead to the possible of congestion in the transmission lines. The possible contingencies of power components further worsen the scenario. This paper describes the methodology for the identification of critical transmission line by computing the real power and reactive power performance indices. It also demonstrates the importance of fuzzy logic technique used to rank the transmission lines according to the severity and demonstrated on IEEE-30 bus system.
Error Correction Circuit for Single-Event Hardening of Delay Locked Loops  [PDF]
S. Balaji, S. Ramasamy
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.79210
Abstract: In scaled CMOS processes, the single-event effects generate missing output pulses in Delay-Locked Loop (DLL). Due to its effective sequence detection of the missing pulses in the proposed Error Correction Circuit (ECC) and its portability to be applied to any DLL type, the ECC mitigates the impact of single-event effects and completes its operation with less design complexity without any concern about losing the information. The ECC has been implemented in 180 nm CMOS process and measured the accuracy of mitigation on simulations at LETs up to 100 MeV-cm2/mg. The robustness and portability of the mitigation technique are validated through the results obtained by implementing proposed ECC in XilinxArtix 7 FPGA.
High Frequency Charging Techniques—Grid Connected Power Generation Using Switched Reluctance Generator  [PDF]
S. Sridharan, S. Sudha
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.714352
Abstract: Power generation becomes the need of developed, developing and under developed countries to meet their increasing power requirements. When affordability increases their requirement of power increases, this happens when increased per capita consumption. The existing power scenario states that highest power is produced using firing of coals called thermal energy. A high efficiency Switched Reluctance Generator (SRG) based high frequency switching scheme to enhance the output for grid connectivity is designed, fabricated and evaluated. This proposed method generates the output for the low wind speed. It provides output at low speed because of multi-level DC-DC converter and storage system. It is an efficient solution for low wind power generation. The real time readings and results are discussed.
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