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Search Results: 1 - 10 of 4768 matches for " Daniele Marin "
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Transgênicos - Plantas Produtoras de Fármacos (PPF)
Rocha,Daniele Rachidi da; Marin,Victor Augustus;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000800033
Abstract: plant-based drugs - pbd - represent the 4th generation of genetically-modified plants and in this case the technology is used to develop and produce pharmaceuticals vaccines and/or products from transgenic seeds. this technology, like all scientific innovations, has inherent risks. however, the current knowledge available about the use of this technology means that no firm conclusions can be drawn about the nature of the risks involved, as well as their significance and the likelihood of causing serious damage or not. risk analysis should be the starting premise prior to any implementation of techno-scientific innovations. the parameters must be evaluated and precautions taken and research must be conducted in a detailed and broad-ranging manner with respect to the potential risks of any innovation. this article analyzed the applicability of this new technology, as well as risk management and containment in order to guarantee safe use, handling and consumption by human beings.
Optimization of Contrast Material Dose for Abdominal Multi-Detector Row CT: Predicting Patient Lean Body Weight by Using Preliminary Transverse CT Images  [PDF]
Antonino Guerrisi, Daniele Marin, Huiman Barnhart, Lisa Ho, Thomas L. Toth, Carlo Catalano, Rendon C. Nelson
Advances in Computed Tomography (ACT) , 2014, DOI: 10.4236/act.2014.31001

Estimated LBW could be used to determine the contrast material dose and rate during MDCT. The aim of this study is to test the accuracy of a technique for estimation of lean body weight (LBW) from a single multi-detector row computed tomographic (MDCT) abdominal image, using a bioelectrical body composition analyzer scale as the reference standard. CT images of 21 patients with previously measured LBW (mLBW) were processed using computer-assisted, vendor-specific software (Advantage Windows 4.2; GE Healthcare, Inc). For each transverse image, a fat-fraction was automatically measured as the number of fat pixels (-200 to -50 HU) divided by the total number of pixels having an attenuation value ≥-200 HU. Estimated LBW (eLBW) of five single contiguous sections was calculated in each of three abdominal regions (upper abdomen, mid abdomen and pelvis) by multiplying TBW by (1 – fat-fraction). Bland-Altman plot with limits of agreement was used to assess agreement between mLBW and eLBW. The mean mLBW for all patients was 56 kg (range, 39 - 75 kg). Mean differences and limits of agreement between mLBW and eLBW measurements for the upper abdomen, mid abdomen and pelvis reported were -8.9 kg (-25.6 kg, +7.5 kg), -10.6 kg (-27.7 kg, +6.4 kg), and +0.5 kg (-12.8 kg, +13.8 kg) respectively. eLBW deriving directly from a transverse CT image of the pelvis can accurately predict mLBW.

Compreendendo a história de vida de idosos institucionalizados
Marin, Maria José Sanches;Miranda, Fabiana Accioli;Fabbri, Daniele;Tinelli, Laura Privatto;Storniolo, Luana Vergian;
Revista Brasileira de Geriatria e Gerontologia , 2012, DOI: 10.1590/S1809-98232012000100016
Abstract: considering that institutionalization often represents the elderly's only possibility of survival, involving suffering and limitations that influence life conditions, this study aims to understand institutionalized elderly′s life history. this is a qualitative research made from eight elderly′s narratives, living in long-term facilities. interpretation of data was based on the content analysis method thematic modality. the results present similarities in trajectories, marked by disfavoring of social historic content. it may be concluded that attention to the aging process starts in childhood, observing bio-psychosocial conditions of growing and development.
Dual gate control of bulk transport and magnetism in the spin-orbit insulator Sr2IrO4
Chengliang Lu,Shuai Dong,Andy Quindeau,Daniele Preziosi,Ni Hu,Marin Alexe
Physics , 2015, DOI: 10.1103/PhysRevB.91.104401
Abstract: The 5d iridates have been the subject of much recent attention due to the predictions of a large array of novel electronic phases driven by twisting strong spin-orbit coupling and Hubbard correlation. As a prototype, the single layered perovskite Sr2IrO4 was first revealed to host a Jeff=1/2 Mott insulating state. In this material, the approximate energy scale of a variety of interactions, involving spin-orbit coupling, magnetic exchange interaction, and the Mott gap, allows close coupling among the corresponding physical excitations, opening the possibility of cross control of the physical properties. Here, we experimentally demonstrate the effective gate control of both the transport and magnetism in a Sr2IrO4-based field effect transistor using an ionic liquid dielectric. This approach could go beyond the surface-limited field effect seen in conventional transistors, reflecting the unique aspect of the Jeff=1/2 state. The simultaneous modulation of conduction and magnetism confirms the proposed intimate coupling of charge, orbital, and spin degrees of freedom in this oxide. These phenomena are probably related to an enhanced deviation from the ideal Jeff=1/2 state due to the gate-promoted conduction. The present work would have important implications in modelling the unusual physics enabled by strong spin-orbit coupling, and provides a new route to explore those emergent quantum phases in iridates.
Crossover of conduction mechanism in Sr2IrO4 epitaxial thin films
Chengliang Lu,Andy Quindeau,Hakan Deniz,Daniele Preziosi,Dietrich Hesse,Marin Alexe
Physics , 2014, DOI: 10.1063/1.4894465
Abstract: High quality epitaxial Sr2IrO4 thin films with various thicknesses (9-300 nm) have been grown on SrTiO3 (001) substrates, and their electric transport properties have been investigated. All samples showed the expected insulating behavior with a strong resistivity dependence on film thickness, that can be as large as three orders of magnitude at low temperature. A close examination of the transport data revealed interesting crossover behaviors for the conduction mechanism upon variation of thickness and temperature. While Mott variable range hopping (VRH) dominated the transport for films thinner than 85 nm, high temperature thermal activation behavior was observed for films with large thickness, which was followed by a crossover from Mott to Efros-Shklovskii (ES) VRH in the low temperature range. This low temperature crossover from Mott to ES VRH indicates the presence of a Coulomb gap (~3 meV). Our results demonstrate the competing and tunable conduction in Sr2IrO4 thin films, which in turn would be helpful for understanding the insulating nature related to strong spin-orbit-coupling of the 5d iridates.
Diophantine Equations and the Freeness of Möbius Groups  [PDF]
Marin Gutan
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.510132
Abstract: Let p and q be two fixed non zero integers verifying the condition gcd(p,q) = 1. We check solutions in non zero integers a1,b1,a2,b2 and a3 for the following Diophantine equations: (B1) \"\" (B2) \"\".
The equations (B1) and (B2) were considered by R.C. Lyndon and J.L. Ullman in [1] and A.F. Beardon in [2] in connection with the freeness of the M?bius group \"\" generated by two matrices of \"\" namely \"\" and \"\" where \"\". They proved that if one of the equations (B1) or (B2) has solutions in non zero integers then the group \"\" is not free. We give algorithms to decide if these equations admit solutions. We obtain an arithmetical criteria on p and q for which (B1) admits solutions. We show that for all p and q the equations (B1) and (B2) have only a finite number of solutions.
Weak Solutions in Elasticity of Dipolar Porous Materials
Marin Marin
Mathematical Problems in Engineering , 2008, DOI: 10.1155/2008/158908
Abstract: The main aim of our study is to use some general results from the general theory of elliptic equations in order to obtain some qualitative results in a concrete and very applicative situation. In fact, we will prove the existence and uniqueness of the generalized solutions for the boundary value problems in elasticity of initially stressed bodies with voids (porous materials).
On the Nonlinear Theory of Micropolar Bodies with Voids
Marin Marin
Journal of Applied Mathematics , 2007, DOI: 10.1155/2007/15745
Abstract: This paper is concerned with the nonlinear theory of micropolar, porous, and elastic solids. By using the theory of Langenbach, within this context, we obtain some existence and uniqueness results.
Nursing diagnoses of patients in the preoperative period of esophageal surgery
Lopes, Ana Elisa Ricci;Pompeo, Daniele Acalá;Canini, Silvia Rita Marin da Silva;Rossi, Lídia Aparecida;
Revista Latino-Americana de Enfermagem , 2009, DOI: 10.1590/S0104-11692009000100011
Abstract: this study aimed to identify and analyze the nursing diagnoses of patients in the preoperative period of esophageal surgeries. data were collected by means of an instrument, based on horta's conceptual model. the study group consisted of 20 patients hospitalized at the ribeir?o preto medical school hospital das clínicas, who would undergo esophageal surgery. the patients were submitted to an interview and a physical examination. the nursing diagnoses identified at frequencies of more than 50% were: impaired swallowing (100%); risk for infection (100%); knowledge deficit about disease and perioperative period (95%), and chronic pain (75%). these diagnoses were analyzed in view of the related factors, defining characteristics or risk factors, according to the type of diagnosis and the responses to the esophageal disease.
Simulated Sample Behaviour of a Dissimilarity Index When Sampling from Populations Differing by a Location Parameter Only  [PDF]
Fabio Manca, Claudia Marin
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.515213
Abstract: In this paper the authors study empirically the power of the test based on the index of dissimilarity to compare two samples drawn from two populations differing only in the location parameter. We call such a test as test of homogeneity. In practice the power of such a bidirectional test will be studied referring to the absolute value of the shiftδand to the same probability models considered by Fried and Dehling.
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