Tópico(s): Stochastic processes and statistical mechanics
1990 - Hebrew University of Jerusalem | Israel Journal of Mathematics
Produção Nacional
Revisado por pares
Eric Lecorvaisier, Sébastien Darche, Zaqueu Ernesto da Silva, Cristiane Kelly F. da Silva,
Biological products contain high moisture content in the harvest period. Such moisture could cause their deterioration in storage. Drying is an interesting solution to keep the quality of these products. Generally, drying process is based on contact of a dry air phase with a wet solid. A theoretical model was developed to describe the dynamic behavior of a forced convection drying process. This model takes into account the entire dynamic phenomenon including turbulence, diffusivity and tortuosity ...
Tópico(s): Freezing and Crystallization Processes
2009 - Elsevier BV | Journal of Food Engineering
Produção Nacional
Revisado por pares
Cristiane Kelly F. da Silva, Zaqueu Ernesto da Silva, Viviana Cocco Mariani,
This study determined the diffusion coefficient during hot air drying of mushrooms (Agaricus blazei). Experimental drying kinetics were applied to sliced mushroom at different air temperatures (45, 60, 75, and 80 °C) and air velocities (1, 1.2, 1.75, 2.3, and 2.5 m/s) in order to find an analytical solution to the mass transfer equation for drying using an inverse problem with two distinct optimization techniques: Levenberg–Marquardt and Differential Evolution, in successive trials. The experimental ...
Tópico(s): Radiative Heat Transfer Studies
2009 - Elsevier BV | Journal of Food Engineering
Produção Nacional
Revisado por pares
Given two pointsx, y∈S 1 randomly chosen independently by a mixing absolutely continuous invariant measure μ of a piecewise expanding and smooth mapf of the circle, we consider for each ε>0 the point process obtained by recording the timesn>0 such that |f n (x)−f n (y)|≦ε. With the further assumption that the density of μ is bounded away from zero, we show that when ε tends to zero the above point process scaled by ε−1 converges in law to a marked Poisson point process with constant parameter measure. ...
Tópico(s): Topological and Geometric Data Analysis
1994 - Springer Science+Business Media | Probability Theory and Related Fields
Produção Nacional
Revisado por pares
Mirtes A. C. Silva, Jefferson Luiz Gomes Corrêa, Zaqueu Ernesto da Silva,
Summary This work presents a study of the mass transfer of osmotically dehydrated West Indian cherry, also known as acerola. The experiments were performed by immersing the fruits in a sucrose solution at 65ºBrix for 12 h at ambient temperature (27 °C), using three different fruit:solution ratios (1:4; 1:10 and 1:15 (w:w)). The kinetics of water loss, solids gain and weight reduction was determined. Effective mass diffusivity was calculated by the inverse method, using the Levenberg‐Marquardt minimisation ...
Tópico(s): Irrigation Practices and Water Management
2010 - Wiley | International Journal of Food Science & Technology
Produção Nacional
Revisado por pares
Mirtes Aparecida da Conceição Silva, Zaqueu Ernesto da Silva, Viviana Cocco Mariani, Sébastien Darche,
The main purpose of this work was to study water loss, solids gain, and weight and moisture reduction during the osmotic dehydration process of the West Indian cherry (Malpighia punicifolia). The diffusion coefficient of West Indian cherry was estimated by the inverse method using average moisture contents. Osmotic dehydration was examined for 12 h in a 65°Brix solution at temperature of 27 °C, without agitation, using a fruit:solution mass ratio of 1:4, 1:10, and 1:15. The kinetics and internal changes ...
Tópico(s): Freezing and Crystallization Processes
2011 - Elsevier BV | LWT
Produção Nacional
Revisado por pares
Zaqueu Fernando Montezano, Edemar Joaquim Corazza, Takashi Muraoka,
O conhecimento da variabilidade da fertilidade do solo em áreas cultivadas pode trazer importantes subsídios para a racionalização de uso dos corretivos e fertilizantes do solo. O objetivo deste estudo foi determinar a variabilidade da fertilidade do solo por meio do fracionamento de um talhão comercial em pequenas células de manejo. O experimento foi realizado na Fazenda Alto Alegre em Planaltina - GO, numa área de 373 ha de um Latossolo cultivada com milho na safra 2003/04. Traçado um polígono da ...
Tópico(s): Soil and Land Suitability Analysis
2006 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Zaqueu Coelho, Edson de Faria,
Tópico(s): Mathematics and Applications
1996 - Hebrew University of Jerusalem | Israel Journal of Mathematics
Produção Nacional
Revisado por pares
Stela L.R. Mendonça, Celso Rosendo Bezerra Filho, Zaqueu Ernesto da Silva,
A methodology to estimate the thermal conductivity (κ) and volumetric thermal capacity (ρcp) of apples is described. The methodology is based in the inverse problem of heat conduction solution. The apples are considered as spherical objects. This approach relies on an analytical solution of the problem and on an optimization technique to estimate the two thermophysical properties. Typically, a test to measures the temperature response of a specimen subjected to transient heating by hot air to determine ...
Tópico(s): Greenhouse Technology and Climate Control
2004 - Elsevier BV | Journal of Food Engineering
Zaqueu Coelho, Artur O. Lopes, Luiz Fernando da Rocha,
We consider a class A \mathcal {A} of affine interval exchange maps of the interval and we analyse several ergodic properties of the elements of this class, among them the existence of absolutely continuous invariant probability measures. The maps of this class are parametrised by two values a and b , where a , b ∈ ( 0 , 1 ) a,b \in (0,1) . There is a renormalization map T defined from A \mathcal {A} to itself producing an attractor given by the set R \mathcal {R} of pure rotations, i.e. the set of ( a, b ) such that b = 1 − ...
Tópico(s): Mathematical Dynamics and Fractals
1995 - American Mathematical Society | Proceedings of the American Mathematical Society
Tópico(s): Advanced Mathematical Identities
2001 - American Mathematical Society | Translations - American Mathematical Society/Translations
Produção Nacional
Revisado por pares
Lívia da Conceição Costa Zaqueu, María Cristina Triguero Veloz Teixeira, Felipe Alckmin-Carvalho, Cristiane Silvestre Paula,
RESUMOOs Transtornos do Espectro do Autismo (TEA) costumam comprometer o funcionamento adaptativo e desenvolvimento psicossocial na infância. O objetivo deste estudo foi buscar associações entre: sinais precoces dos TEA, falhas na atenção compartilhada-AC e atrasos de desenvolvimento. Participaram do estudo 92 crianças (16-24 meses) de cinco creches de Barueri-SP. Instrumentos utilizados: Development Screening Test-DENVER-II (desenvolvimento neuropsicomotor), Modified Checklist for Autism in Toddlers- ...
Tópico(s): Child Development and Digital Technology
2015 - UNIVERSIDADE DE BRASÍLIA | Psicologia Teoria e Pesquisa
Produção Nacional
Revisado por pares
Bernoullicity is the strongest mixing property that a measure-theoretic dynamical system can have. This is known to be intimately connected to the so-called $\bar d$ metric on processes, introduced by Ornstein. In this paper, we consider families of measures arising in a number of contexts and give conditions under which the measures depend $\bar d$-continuously on the parameters. At points where there is $\bar d$-continuity, it is often straightforward to establish that the measures have the Bernoulli ...
Tópico(s): Advanced Topology and Set Theory
1998 - American Mathematical Society | Transactions of the American Mathematical Society
Produção Nacional
Revisado por pares
Eduardo Mariano, Rafael Otto, Zaqueu Fernando Montezano, Heitor Cantarella, Paulo César Ocheuze Trivelin,
Nitrogen recommendation systems for sugarcane (Saccharum spp.) generally does not consider the N supply from soil. Identifying a reliable soil test for estimating N availability is crucial to avoid yield losses or environmental pollution. Therefore, the objective of this study was to correlate and calibrate N availability indices with field–based measures of soil N supply. Between 2006 and 2013, 15 trials for rate–response to N fertilizer by sugarcane ratoons were performed in São Paulo, the main ...
Tópico(s): Soil Carbon and Nitrogen Dynamics
2017 - Elsevier BV | European Journal of Agronomy
Produção Nacional
Revisado por pares
Késia Silva Lourenço, Raffaella Rossetto, André Cesar Vitti, Zaqueu Fernando Montezano, Johnny Rodrigues Soares, Rafael de Melo Sousa, Janaína Braga do Carmo, Eiko E. Kuramae, Heitor Cantarella,
Vinasse is a major byproduct of the sugarcane biofuel industry, recycled in the fields. However, there is evidence that the application of vinasse with mineral nitrogen (N) fertilizers in sugarcane enhances the emission of greenhouse gases (GHGs). Therefore, strategies are needed to decrease the environmental impacts caused by both inputs. We carried out three sugarcane field experiments by applying N fertilizer (ammonium nitrate) with types of vinasses (concentrated-CV and standard-V) in different ...
Tópico(s): Anaerobic Digestion and Biogas Production
2018 - Elsevier BV | The Science of The Total Environment
Mariana Brandão, Assucena Guisseve, Genoveva Bata, João Firmino‐Machado, Matos Alberto, Josefo Ferro, Carlos García, Clésio Zaqueu, Astrilde Jamisse, Cesaltina Lorenzoni, Martine Piccart, Dina Leitão, Jotamo Come, Otília Soares, Alberto Gudo-Morais, Fernando Schmitt, Satish Tulsidás, Carla Carrilho, Nuno Lunet,
Abstract Background Despite the international endorsement of multidisciplinary tumor boards (MTBs) for breast cancer care, implementation is suboptimal worldwide, and evidence regarding their effectiveness in developing countries is lacking. We assessed the impact on survival and the cost-effectiveness of implementing an MTB in Mozambique, sub-Saharan Africa. Materials and Methods This prospective cohort study included 205 patients with breast cancer diagnosed between January 2015 and August 2017 ( ...
Tópico(s): Advances in Oncology and Radiotherapy
2020 - AlphaMed Press | The Oncologist
Mariana Brandão, Assucena Guisseve, Genoveva Bata, Matos Alberto, Josefo Ferro, Carlos García, Clésio Zaqueu, Cesaltina Lorenzoni, Dina Leitão, Jotamo Come, Otília Soares, Alberto Gudo-Morais, Fernando Schmitt, Satish Tulsidás, Carla Carrilho, Nuno Lunet,
BackgroundData regarding breast cancer epidemiology, treatment and survival in Africa are scarce. We aimed to assess the distribution of breast cancer subtypes in Mozambique and its impact on patients' treatment and survival. The concordance of biomarker assessment between cytological and histological samples was also evaluated.MethodsProspective cohort study including 210 patients diagnosed between January 2015 and August 2017, followed to November 2019. Clinicopathological characteristics, treatment, ...
Tópico(s): Breast Lesions and Carcinomas
2020 - Elsevier BV | ESMO Open
Caitlyn Duffy, Darlene Kenga, Tebeb Gebretsadik, Fabião E. Maússe, Alice Manjate, Ernesto Zaqueu, Hermenegilda F. Fernando, Ann Green, Jahit Sacarlal, Troy D. Moon,
Anemia is an increasingly recognized problem in sub-Saharan Africa. To determine the magnitude, severity, and associated factors of anemia among hospitalized children aged 6–59 months, HIV-infected and HIV-exposed uninfected children (a child born to a known HIV-infected mother) with a documented fever or history of fever within the prior 24 hours of hospital admission ( N = 413) were included in this analysis. Of 413 children enrolled, 364 (88%) were anemic, with 53% classified as mild anemia (hemoglobin [Hb] ...
Tópico(s): Child Nutrition and Water Access
2020 - American Society of Tropical Medicine and Hygiene | American Journal of Tropical Medicine and Hygiene
Produção Nacional
Revisado por pares
Iracema Alves Manoel Degaspari, Johnny Rodrigues Soares, Zaqueu Fernando Montezano, Stephen J. Del Grosso, André Cesar Vitti, Raffaella Rossetto, Heitor Cantarella,
Tópico(s): Plant nutrient uptake and metabolism
2020 - Springer Science+Business Media | Nutrient Cycling in Agroecosystems
Jean-René Chazottes, Zaqueu Coelho, Pierre Collet,
Let Δ ⊊ V be a proper subset of the vertices V of the defining graph of an irreducible and aperiodic shift of finite type [Formula: see text]. Let Σ Δ be the subshift of allowable paths in the graph of [Formula: see text] which only passes through the vertices of Δ. For a random point x chosen with respect to an equilibrium state μ of a Hölder potential φ on [Formula: see text], let τ n be the point process defined as the sum of Dirac point masses at the times k > 0, suitably rescaled, for which the first ...
Tópico(s): Quantum chaos and dynamical systems
2009 - World Scientific | Stochastics and Dynamics
Produção Nacional
Revisado por pares
This work is about symbolic powers of codimension two perfect ideals in a standard polynomial ring over a field, assuming that the entries of the corresponding presentation matrix are general linear forms. The main contribution of the present approach is the use of the birational theory underlying the nature of the ideal and the details of a deep interlacing between generators of its symbolic powers and the inversion factors stemming from the inverse map to the birational map defined by the linear ...
Tópico(s): Algebraic Geometry and Number Theory
2014 - Elsevier BV | Journal of Algebra
Produção Nacional
Revisado por pares
Taniris Cafiero Braga, Marina Magalhães Silva, Eduarda O.O. Nascimento, Edjan Carlos Dantas da Silva, Yuri de Freitas Rego, Mullicka Mandal, Zaqueu Alves de Souza, Ana Lúcia Tasca Góis Ruiz, João Ernesto de Carvalho, Felipe Terra Martins, Isis Martins Figueiredo, Thiago Mendonça de Aquino, Cleiton Moreira da Silva, Bhagirath Mandal, Goutam Brahmachari, Josué Carinhanha Caldas Santos, Ângelo de Fátima,
Twenty chromenes were synthesized with good to excellent yields (70–96%). From the series of chromenes herein tested, compounds 14, 12, 15, 16, 17, 18, and 20 were the most potent throughout the cancer human cell lines tested. In general, the para-position electron-withdrawing substituents on the phenyl ring are favored towards potency and selectivity for cancer cells. Biophysical studies were performed with eight chromene derivatives (13-20) and ctDNA to evaluate possible biological targets. The ...
Tópico(s): Multicomponent Synthesis of Heterocycles
2022 - Elsevier BV | European Journal of Medicinal Chemistry Reports
For a minimal circle homeomorphism $f$ we study convergence in law of rescaled hitting time point process of an interval of length $\varepsilon >0$. Although the point process in the natural time scale never converges in law, we study all possible limits under a subsequence. The new feature is the fact that, for rotation numbers of unbounded type, there is a sequence $\varepsilon _{n}$ going to zero exhibiting coexistence of two non-trivial asymptotic limit point processes depending on the choice of time ...
Tópico(s): Diffusion and Search Dynamics
2004 - American Mathematical Society | Transactions of the American Mathematical Society
Produção Nacional
Revisado por pares
Jefferson Luiz Gomes Corrêa, Fabíola Ayres Cacciatore, Zaqueu Ernesto da Silva, Tomasz Arakaki,
Objetivou-se a determinacao da cinetica de transferencia de massa na desidratacao osmotica de acerola. As condicoes de desidratacao incluiram o uso de branqueamento e uma solucao hipertonica de sacarose 60% (p/p), determinadas anteriormente. A taxa frutas/solucao foi de 1/3. Os experimentos foram conduzidos a temperatura ambiente. As cineticas de transferencia de massa de perda de agua, ganho de sal e perda de peso foram obtidas. A difusividade efetiva foi determinada usando a segunda lei de Fick ...
Tópico(s): Spectroscopy and Chemometric Analyses
2008 - UNIVERSIDADE FEDERAL DO CEARÁ | Ciência Agronômica/Revista ciência agronômica
Produção Nacional
Revisado por pares
Zaqueu Cabral Pereira, Marcelo Eduardo Pellenz, Richard Demo Souza, M.A. Araújo Siqueira,
An unequal error protection strategy for minimising the impact of error bursts in the storage or transmission of compressed data has been proposed. The strategy is designed for the LZSS algorithm, which is a dynamic dictionary compression method. Through extensive computer simulations we investigate which information classes within LZSS are more sensitive to burst errors. Based on these results, an unequal error protection strategy that greatly reduces the error propagation during the decompression ...
Tópico(s): Error Correcting Code Techniques
2007 - Institution of Engineering and Technology | IET Communications
Produção Nacional
Daniel dos Santos Costa, Maria Dulcinéia da Costa, Fredson Vieira Silva, Vicente Ribeiro Rocha Júnior, Zaqueu Gonçalves Carvalho, Daniella Cangussú Tolentino, João Ricardo Avelar Leite,
Objetivou-se com o trabalho avaliar o desempenho ponderal de dois genótipos de ovinos, Santa Inês e F1 Dorper x Santa Inês em pastagem de Panicum maximum cv. Massai. Foram utilizados oito fêmeas e oito machos, de cada genótipo, em delineamento inteiramente casualizado, em esquema fatorial 2x2x2 (dois genótipos, dois sexos e duas idades de abate). Os dados foram submetidos à análise de variância com aplicação do teste de Scot-Knott com probabilidade de 5%. Avaliaram-se peso ao nascimento, peso a desmama, ...
Tópico(s): Genetic and phenotypic traits in livestock
2012 - UNIVERSIDADE FEDERAL DA BAHIA | Revista Brasileira de Saúde e Produção Animal
Darlene Kenga, Tebeb Gebretsadik, Samuel Simbine, Fabião E. Maússe, Pedro Charles, Ernesto Zaqueu, Hermenegilda F. Fernando, Alice Manjate, Jahit Sacarlal, Troy D. Moon,
Bacteremia is a major cause of morbidity and mortality worldwide. Children infected with HIV present with patterns of bacteremia generally associated with poor prognosis. In Mozambique, data on bacteremia are sparce.We conducted an observational study of HIV-infected and HIV-exposed uninfected children, aged 0-59 months, hospitalized with fever between April 1, 2016 and February 28, 2019. A single bacterial culture was collected at admission. Descriptive statistics were used to summarize microorganisms ...
Tópico(s): Global Maternal and Child Health
2021 - Elsevier BV | International Journal of Infectious Diseases
Produção Nacional
Revisado por pares
Silvia Layse Mendes Machado, Eleuza Clarete Junqueira de Sales, Sidnei Tavares dos Reis, Virgílio Gomes Mesquita, Zaqueu Gonçalves Carvalho, Flávio Pinto Monção, Edilane Aparecida da Silva Gomes, Domingos Sávio Queiroz, Antônio Carlos Ribeiro Lima ll,
The objective of this study was to evaluate the influence of different nitrogen doses on the forage accumulation, tillering and chemical characteristics of Braquiaria grass (Urochloa decumbens (Stapf) Webster cv. Basilisk).A randomized block design with four replications was used, and each plot (50 m²) was an experimental unit.The treatments consisted of four doses of N (100, 200, 300 and 400 kg ha -1 year -1 ) and the control treatment.There was an increase in whole-plant crude protein (CP) and in leaf ...
Tópico(s): Environmental and biological studies
2017 - | Científica
Produção Nacional
Revisado por pares
Marlene Esteves, Sílvia Helena Figueiredo Vendramini, Maria de Lourdes Silva Santos, Vânia Zaqueu Brandão, Zaida Aurora Sperli Geraldes Soler, Luciano Garcia Lourenção,
Model of study: The study design was a populational, cross-sectional and descriptive. Objective: To evaluate the quality of life of high blood pressure and diabetic elderly outpatients of a teaching hospital in the interior of Sao Paulo State, Brazil. Methodology: The study was done in a Geriatrics Outpatient Service in São José do Rio Preto, involved 62 elderly patients with high blood pressure and/or diabetes mellitus treated in the period from December 2009 to February 2010. The data were collected ...
Tópico(s): Healthcare during COVID-19 Pandemic
2017 - UNIVERSIDADE DE SÃO PAULO | Medicina (Ribeirão Preto)
Produção Nacional
Revisado por pares
Zaqueu Cabral Pereira, Thiago Henrique Ton, João Luiz Rebelatto, Richard Demo Souza, Bartolomeu F. Uchôa-Filho,
Cooperative communication is a well-established technique to obtain diversity and consequently combat the fading inherent to the wireless channel. In a recent work, network-coded cooperation (NCC) along with graph theory-aided subcarrier allocation was applied to an OFDMA network where multiple source nodes have independent information to transmit to a common destination. In the so-called NCC-OFDMA scheme, diversity is then obtained by means of space and frequency, showing that the aforementioned ...
Tópico(s): Full-Duplex Wireless Communications
2018 - Institute of Electrical and Electronics Engineers | IEEE Access