Interferência de Fano e uma ligeira flutuação da marca Majorana

Pós-graduação em Ciência dos Materiais - FEIS

Cardiorespiratory and antinociceptive effects of two different doses of lidocaine administered to horses during a constant intravenous infusion of xylazine and ketamine

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Massless scattering at special kinematics as Jacobi polynomials

We study the scattering equations recently proposed by Cachazo, He and Yuan in the special kinematics where their solutions can be identified with the zeros of the Jacobi polynomials. This allows for a non-trivial two-parameter family of kinematics. We present explicit and compact formulas for the n-gluon and n-graviton partial scattering amplitudes for our special kinematics in terms of Jacobi polynomials. We also provide alternative expressions in terms of gamma functions. We give an interpretation of the common reduced determinant appearing in the amplitudes as the product of the squares of the eigenfrequencies of small oscillations of a system whose equilibrium is the solutions of the scattering equations.

Fano interference and a slight fluctuation of the Majorana hallmark

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Comparação do equilíbrio e qualidade de vida entre idosos institucionalizados e não-institucionalizados

Introduction: the improvements on the health area increased the brazilians life expectative. Because of it, more people becomes elder, passing through various common processes of aging, as the balance decrease. Resulting form this the risk of fall increase, and this has a negative impact on the quality of life. As more people become elder the institutionalization tax increase. Objectives: compare the balance and quality of life between institutionalized and non-institutionalized elders; correlate the Berg Balance Scale (BBS) with the Timed Up and Go test (TUG) and with the questionnaire “The Medical Outcome Study 36 – Item Short-Form Health Survey” (SF-36). Methods: were evaluated 20 elders, ten institutionalized (GI) and ten non-institutionalized (GNI). To the balance assessment were used the BBS and the TUG, the quality of life was evaluated using the SF-36. The signifi cance level was set to 5% (p<0,05). The GraphPad Prism 5# was used to analyze the data. To identify the distribution of the data was applied the Shapiro-Wilk test. In the comparison between groups, the normal distributed data were analyzed with the Unpaired Student t test. The non-normal distributed data were analyzed with the Mann-Whitney non-parametric test. The correlations were analyzed with the Pearson (normal data) and Spearman’s (non-normal data) tests. Results: the age average for each group was 72,8±8,36 years (GI) e 67,4±3,53 years (GNI). The GNI had a better performance than the GI in the BBS (*p=0,0017) as in the TUG (*p<0,0002). There wasn’t difference between the quality of life. There was correlation between EEB and TUG (-0,8907 for the GI and -0,7180 for the GNI) and between EEB and the functional capacity domain from the SF-36 (0,7657). Conclusion: the non-institutionalized elders presented best balance. It was found good correlation between TUG and BBS. In the studied sample, to be institutionalized didn’t infl uenced the quality of life.

Universality of Three-Body Systems in 2D: Parametrization of the Bound States Energies

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES

This study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and acidolysis techniques. The chips were cooked, resulting pulps of kappa number 14,5 and 16,9, respectively. Both lignins' pulps were evaluated through three methods (nitrobenzene oxidation, copper oxide oxidation and acidolysis). Then, they were subjected to an oxygen delignification stage. The 16,9 kappa number pulp resulted in higher levels of non-condensed lignin structures by the acidolysis method, higher syringyl/vanillin ratios (S/V) by the nitrobenzene and copper oxide methods and better performance in the oxygen delignification stage. The different methods allowed to differ the residual lignin pulps with kappa number 14,5 and 16,9, and the nitrobenzene oxidation method showed the highest sensitiveness in this study results.

Avaliação do equilíbrio, mobilidade e flexibilidade em idosas ativas e sedentárias

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeitos do treinamento com pesos nas atividades de vida diária básicas e instrumentais de pacientes com doença de Alzheimer

The Alzheimer's disease (AD) is a neurodegenerative and progressive disease, mostly seen in elderly people, characterized by memory loss. This commitment leads causes deficits in functional capacity, compromising the individual in execution of activities of daily living, like dressing and bathing. This study, with a longitudinal character, aimed analyze the effects of a protocol of weights training (WT) in global cognitive status and realization of activities of daily living (ADL´s) basic and instrumental in AD patients, comparing the effects of four months of WT in the performance of ADL´s in global cognitive status. And also aimed to verify the possible relations between ADL's and global cognitive status of patients before and after the experimental period. The study included 24 patients with clinical diagnosis of AD, divided into two groups: a) training group (TG) consisted of 13 patients who underwent a protocol of WT b) Social Gathering Group (SCG) consists of 11 patients participating in a protocol of social gathering not systematized with activities of reading, writing and walking. Both protocols lasted four months, being developed in three non-consecutive weekly sessions, lasting 60 minutes each. To quantify global cognitive status and the basic and instrumental ADLs were used, respectively, the Mini-Mental State Examination and the Self Perception of Performance in Activities of Daily Living, along with the battery of tests of Activities of Daily Life of Andreotti and Okuma (1999). To analyze the results where complied the nature of the data, using analysis of variance for repeated measures ANOVA two-way and Pearson correlation for continuous data and tests of U Mann Whitney, Wilcoxon and Spearman correlation for non-continuous data, assuming level significance of 5% for all analysis. After analysis it´s possible... (Complete abstract click electronic access below)

Local classification of singular hexagonal 3-webs with holomorphic Chern connection form and infinitesimal symmetries

Implicit ODE, cubic in derivative, generically has no infinitesimal symmetries even at regular points with distinct roots. Cartan showed that at regular points, ODEs with hexagonal 3-web of solutions have symmetry algebras of the maximal possible dimension 3. At singular points such a web can lose all its symmetries. In this paper we study hexagonal 3-webs having at least one infinitesimal symmetry at singular points. In particular, we establish sufficient conditions for the existence of non-trivial symmetries and show that under natural assumptions such a symmetry is semi-simple, i.e. is a scaling in some coordinates. Using the obtained results, we provide a complete classification of hexagonal singular 3-web germs in the complex plane, satisfying the following two conditions: 1) the Chern connection form is holomorphic at the singular point, 2) the web admits at least one infinitesimal symmetry at this point. As a by-product, a classification of hexagonal weighted homogeneous 3-webs is obtained.

A new transmission model in cognitive radio based on cyclic generalized polynomial codes for bandwidth reduction

The frequency spectrums are inefficiently utilized and cognitive radio has been proposed for full utilization of these spectrums. The central idea of cognitive radio is to allow the secondary user to use the spectrum concurrently with the primary user with the compulsion of minimum interference. However, designing a model with minimum interference is a challenging task. In this paper, a transmission model based on cyclic generalized polynomial codes discussed in [2] and [15], is proposed for the improvement in utilization of spectrum. The proposed model assures a non interference data transmission of the primary and secondary users. Furthermore, analytical results are presented to show that the proposed model utilizes spectrum more efficiently as compared to traditional models.

Proposição de uma prática experimental significativa em aulas de física

A remarkable characteristic of the physics subject is the abstraction ability needed during the learning process, which means a non-trivial comprehension and understanding. If the students could not link the themes learned in this subject with observable effects, physics would tend to be a group of mathematical formulas to be memorized. In general, it creates a distance between the student and the subject, and also a prejudice vision of the physics, sometimes for the whole life. Beyond this particular characteristics of physics, the education deals with a source of distraction reinforced by the popularization of mobile access such as cellphones and tablets. The traditional role played by the teacher becomes weak to attract student’s attention. It is necessary that the classes could be planned in such way to achieve three goals: attract student attention, link analytical concepts with real effects and, the most important, gives to the student the ability to use the learned concepts as the key to develop new knowledge. In this work, we present a research based in some experiments used in a CBEF (Brazilian magazine about physical education) and develop an activity consistent with the aims to be reached. To prepare of the experimental activity, we based on Piaget and Vygotsky theories. This work aimed to developed a theoretical research to obtain a didactical activity that deals with the current challenges of the society

Pulsating strings from two-dimensional CFT on (T-4)(N)/S(N)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Comments on the T-dual of the gravity dual of D5-branes on S-3

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Scattering equations, generating functions and all massless five point tree amplitudes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)