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Article
Brans-dicke cosmology and the cosmological constant: The spectrum of vacuum solutions
We study the Brans-Dicke vacuum field equations in the presence of a cosmological term A. Considering a Friedmann-Robertson-Walker metric with flat spatial sections (k=0), we provide a qualitative analysis of the...
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Article
The equivalence between General Relativity and scalar-tensor theories of gravity
The equivalence between General Relativity and scalar-tensor theories is discussed. Vacuum solutions of the Brans-Dicke theory of gravity are shown to behave ambiguously whenever attempts are made to interpret...
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Article
Brans-dicke vacuum solutions and the cosmological constant: A qualitative analysis
We investigate Brans-Dicke vacuum solutions in the presence of a cosmological constant A from the point of view of dynamical system theory. Assuming a Friedmann-Robertson-Walker metric we plot the phase diagra...
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Article
A lower bound for the norm of the second fundamental form of minimal hypersurfaces of \( \mathbb{S}^{n+1} \)
The aim of this paper is to give an estimate for the squared norm S of the second fundamental form A of a compact minimal hypersurface ...
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Article
Decoupling of erosion and precipitation in the Himalayas
The hypothesis that abrupt spatial gradients in erosion can cause high strain rates in active orogens has been supported by numerical models that couple erosional processes with lithospheric deformation via gr...
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Article
2H2O turnover method as a means to detect bias in estimations of intake of nonbreast milk liquids in breast-fed infants
Objective: Firstly, to compare food, and macronutrient intake as obtained from a single 24-h recall and a frequency questionnaire (FQ) covering a 14-day period in breast-fed infants aged 4 months of age. Secondly...
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Article
Continuous education in intensive care for physicians in Brazil: for whom and their needs
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Article
Membrane Transporters and Cytoplasmatic pH Regulation on Bovine Sertoli Cells
Sertoli cells are responsible for regulating a wide range of processes that lead to the differentiation of male germ cells into spermatozoa. Cytoplasmic pH (pH i ) has been shown...
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Article
Estimate for index of hypersurfaces in spheres with null higher order mean curvature
In a recent paper (Barros, Sousa in: Kodai Math. J. 2009) the authors proved that closed oriented non-totally geodesic minimal hypersurfaces of the Euclidean unit sphere have index of stability greater than or...
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Article
1007 Osteoporosis and Bone Disorders in Paediatric Renal Transplantation Recipients
Decreased bone mineral density (BMD) is common in renal transplantation recipients (RTR). Osteoporosis has a major role in morbidity in these patients. Risk factors for decreased bone mass include underlying r...
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Article
Some Applications of the Hodge-de Rham Decomposition to Ricci Solitons
The aim of this paper is to present a link between the Perelman potential for a compact Ricci soliton M n and the Hodge-de Rham decomposition theorem, we shall ...
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Article
Rotational linear Weingarten surfaces into the Euclidean sphere
The aim of this paper is to present a complete description of all rotational linear Weingarten surfaces in the Euclidean sphere $$\mat...
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Article
Erratum to: Some Applications of the Hodge-de Rham Decomposition to Ricci solitons
The aim of this note is to clarify a minor mistake in the article: Some Applications of the Hodge-de Rham Decomposition to Ricci solitons.
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Article
Open AccessPReS-FINAL-2008: Juvenile dermatomyositis: a report of 22 cases
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Article
Compact almost Ricci solitons with constant scalar curvature are gradient
The aim of this note is to prove that any compact non-trivial almost Ricci soliton \(\big (M^n,\,g,\,X,\,\lambda \big )\) ...
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Article
The Case for Workflow-Aware Storage:An Opportunity Study
This article evaluates the potential gains a workflow-aware storage system can bring. Two observations make us believe such storage system is crucial to efficiently support workflow-based applications: First, ...
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Article
Bach-Flat Critical Metrics of the Volume Functional on 4-Dimensional Manifolds with Boundary
The purpose of this article is to investigate Bach-flat critical metrics of the volume functional on a compact manifold \(M\) ...
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Article
The Cancer, Educate to Prevent Model—the Potential of School Environment for Primary Prevention of Cancer
Cancer represents one of the main causes of death worldwide; consequently, preventive interventions are of utmost importance in public health education. The leading model of cancer prevention campaigns is base...
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Article
On locally conformally flat critical metrics for quadratic functionals
The aim of this note is to present some results about critical metrics for quadratic functional \({\mathcal {F}}_{t,s}\) ...
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Article
Correction to: The Cancer, Educate to Prevent Model—the Potential of School Environment for Primary Prevention of Cancer
The affiliation address of Dr. Helena Santos should be Faculty of Economics, University of Porto, Portugal and Dr. Luís Moreira’s should be Research Unit in Education and Community Intervention – RECI & Health...
