172 results on '"Vieira S"'
Search Results
2. Persistent currents, revival time and effects of rotation on an attractive inverse-square-type potential in a magnetic quadrupole moment system.
- Author
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Vieira, S. L. R. and Bakke, K.
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QUADRUPOLE moments ,MAGNETIC moments ,ROTATIONAL motion ,MAGNETIC particles ,BOUND states ,TRANSCRANIAL magnetic stimulation - Abstract
We study the appearance of an Aharonov–Bohm-type effect around a cylindrical cavity in a magnetic quadrupole moment system in a rotating reference frame. The analogue of the Aharonov–Bohm-type effect of bound states arises from the interaction of the magnetic quadrupole moment of a neutral particle with an induced electric field when the neutral particle is subject to an attractive inverse-square-type potential, which in turn stems from the interaction of the magnetic quadrupole moment of a neutral particle with a magnetic field. We also discuss how the effects of rotation modify the degeneracy of the energy levels in contrast to the case of absence of rotation. Besides this, we calculate the revival time and the persistent currents. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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3. Erythrocyte-derived liposomes for the treatment of inflammatory diseases.
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Olival, A., Vieira, S. F., Gonçalves, V. M. F., Cunha, C., Tiritan, M. E., Carvalho, A., Reis, R. L., Ferreira, H., and Neves, N. M.
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THERAPEUTICS ,ERYTHROCYTE membranes ,LIPOSOMES ,OMEGA-3 fatty acids ,ANTI-inflammatory agents - Abstract
Effective and safe therapies to counteract persistent inflammation are necessary. We developed erythrocyte-derived liposomes (EDLs) with intrinsic anti-inflammatory activity. The EDLs were prepared using lipids extracted from erythrocyte membranes, which are rich in omega-3 fatty acids with several health benefits. Diclofenac, a widely used anti-inflammatory drug, was incorporated into EDLs in relevant therapeutic concentrations. The EDLs were also functionalised with folic acid to allow their active targeting of M1 macrophages, which are key players in inflammatory processes. In the presence of lipopolysaccharide (LPS)-stimulated macrophages, empty EDLs and EDLs incorporating diclofenac were able to reduce the levels of important pro-inflammatory cytokines, namely interleukin-6 (IL-6; ≈85% and 77%, respectively) and tumour necrosis factor-alpha (TNF-α; ≈64% and 72%, respectively). Strikingly, cytocompatible concentrations of EDLs presented similar effects to dexamethasone, a potent anti-inflammatory drug, in reducing IL-6 and TNF-α concentrations, demonstrating the EDLs potential to be used as bioactive carriers in the treatment of inflammatory diseases. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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4. Chicken liver morphology as affected by feed withdrawal time and dietary aflatoxins.
- Author
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François, E., Vieira, S. L., Kindlein, L., Bess, F., Xavier, B., Soster, P., and Stefanello, C.
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AFLATOXINS ,LIVER ,BROILER chickens ,MORPHOLOGY ,WEIGHT gain ,ANIMAL health - Abstract
1. An investigation was conducted on the effects of aflatoxin (AFL)-contaminated diets and feed withdrawal periods from 0 to 12 h in broiler chickens at 28 d of age. Both factors can potentially affect liver colour and can cause failure at veterinary inspection in the slaughterhouse. 2. A total of 240, one-d-old female Cobb 500 broiler chickens were fed a common corn-soy pre-starters (d 1–7) and then either a non-contaminated control (CON) or feed with 1 ppm AFL (AFL) from d 8 to 28. The inoculum of AFL had 792 ppb of aflatoxin B1, 35 ppb of aflatoxin B2 and 219 ppb of aflatoxin G1. On d 28, all broilers were weighed and euthanised for necropsy following three different feed withdrawal time periods (0, 6 or 12 h), in a 2 × 3 factorial arrangement. 3. Body weight gain, liver weight and liver fat content decreased as feed withdrawal lengthened, whereas FCR and gallbladder weight increased (P ≤ 0.05). AFL-fed birds had reduced body weight and proportion of liver fat and increased FCR, liver and gallbladder weights (P ≤ 0.05). 4. Livers from fed broilers (0 h withdrawal) showed more lightness (L*) and yellowness (b*) than livers of broilers from 6 or 12 h withdrawal (P ≤ 0.05). The L* and redness (a*) values of livers from broilers fed diets COB were lower than those from AFL fed broilers (P ≤ 0.05). 5. Prolonging pre-slaughter feed withdrawal decreased liver L*, whereas feeding AFL increased liver b*. These findings can be used to support veterinary assessment in slaughterhouses as shackled birds move on line through the inspection site. Since chicken liver is a valuable organ and an indicator of animal health, attention must be paid to these differences to ensure consumer safety. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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5. Brain activity in constrained and open design: the effect of gender on frequency bands.
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Vieira, S., Benedek, M., Gero, J., Li, S., and Cascini, G.
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GENDER ,VISUAL cortex ,PREFRONTAL cortex ,ELECTROENCEPHALOGRAPHY - Abstract
This paper presents results from a design neurocognition study on the effect of gender on EEG frequency band power when performing constrained and open design. We used electroencephalography to measure the brain activity of 84 professional designers. We investigated differences in frequency power associated with gender of 38 female and 46 male designers, while performing two prototypical design tasks. The aim of the study was to explore whether gender moderates brain activity while performing a constrained versus an open design task. Neurophysiological results for aggregate activations across genders and between tasks indicate a main effect of gender for theta, alpha 2, and beta 1 frequency bands. Females show higher theta, alpha 2, and beta 1, namely in the right dorsolateral prefrontal cortex, right occipitotemporal cortex, secondary visual cortex, and prefrontal cortex in both tasks. Females show higher beta bands than males, in areas of the left prefrontal cortex, in the constrained design. While in the open design, females showed higher theta, alpha, and beta 2 in the left prefrontal cortex and secondary visual cortex for all frequency bands. Results within gender between tasks indicate higher theta and alpha in the prefrontal cortex in the constrained design for both genders. Whilst for open design, results indicate higher theta and alpha 1 in the right hemisphere and higher alpha 2 and beta bands across hemispheres for both genders. Results within gender reveal common brain areas and frequency bands in distinguishing constrained from open design. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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6. On the Coulomb-type potentials in the magnetic quadrupole moment system under the influence of a cut-off point.
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Vieira, S. L. R. and Bakke, K.
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QUADRUPOLE moments ,MAGNETIC moments ,MAGNETIC particles ,MAGNETIC fields ,ELECTRIC fields - Abstract
From the interaction of the magnetic quadrupole moment of the neutral particle with magnetic and electric fields, we analyse the appearance of attractive Coulomb-type potentials. In addition, based on the field configurations that produce the Coulomb-type potentials inside a long conductor cylinder and a long nonconductor cylinder, we discuss how a cut-off point can arise from. Then, we analyse the influence of the cut-off point on the Coulomb-type potentials by searching for bound states. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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7. Inverse-square-type potential from the interaction of the magnetic quadrupole moment of a neutral particle with a magnetic field.
- Author
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Vieira, S. L. R. and Bakke, K.
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QUADRUPOLE moments ,MAGNETIC particles ,MAGNETIC moments ,MAGNETIC fields - Abstract
We analyse the attractive inverse-square-type potential that arises from the interaction of the magnetic quadrupole moment of a neutral particle with the magnetic field. Then, we search for bound state solutions to the Schrödinger equation. Besides, we analyse the repulsive inverse-square-type potential that arises from the interaction of the magnetic quadrupole moment of a neutral particle with the magnetic field. Thus, we discuss the influence of this repulsive inverse-square-type potential on the neutral particle subject to two cylindrical surfaces and a cylindrical surface. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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8. Transfusion transmissible pathogens are prevalent in healthy cats eligible to become blood donors.
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Mesa‐Sanchez, I., Ferreira, R. R. F., Cardoso, I., Morais, M., Flamínio, M., Vieira, S., Gopegui, R. R., and Matos, A. J. F.
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FELINE immunodeficiency virus ,BLOOD donors ,VIRAL antibodies ,PATHOGENIC microorganisms ,CATS - Abstract
Objectives: This study aims to determine the prevalence of subclinical infectious agents considered core pathogens for worldwide screening in healthy, client‐owned, indoor cats eligible to become blood donors in Spain and Portugal. Materials and Methods: Blood samples of healthy, indoor, domestic cats selected to be potential blood donors were tested for feline leukaemia virus antigens, feline immunodeficiency virus antibodies and polymerase chain reactions for Mycoplasma haemofelis, Candidatus Mycoplasma haemominutum, Candidatus Mycoplasma turicensis, feline leukaemia virus provirus, Leishmania spp. and Bartonella spp. Not all donors were tested for all agents. Results: Overall, 5105 healthy indoor cats were tested and 8.1% (414/5105) had at least one subclinical infectious agent that is transmissible through blood product transfusion. 1.5% (77/5105) were positive for feline leukaemia virus antigens and 2.9% (148/5105) were positive for feline immunodeficiency virus antibodies, therefore they were excluded as donors. The overall prevalence of haemoplasmas in feline leukaemia virus and feline immunodeficiency virus SNAP‐negative feline blood donors was 3.7% (181/4880) [1.3% (63/4880) were positive for Mycoplasma haemofelis; 2.3% (112/4880) to Candidatus Mycoplasma haemominutum and 0.12% (6/4880) to Candidatus Mycoplasma turicensis]. The prevalence of feline leukaemia provirus was 5.2% (9/173) and of Bartonella spp. was 0.2% (2/1122). None of the 173 cats were positive for Leishmania spp. Clinical Significance: The prevalence of many transfusion transmissible pathogens was relatively high in this healthy, client‐owned, indoor cats eligible to become blood donors. Performing an extended screening panel that includes at least polymerase chain reactions for Mycoplasma haemofelis, Candidatus Mycoplasma haemominutum, Candidatus Mycoplasma turicensis, feline leukaemia virus provirus, and Bartonella spp., in addition to feline leukaemia virus antigens and feline immunodeficiency virus antibodies, is recommended in pet blood banks from analogous regions. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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9. An in vivo evaluation of the effects of feed restriction regimens on wooden breast using ultrasound images as a predictive tool.
- Author
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Simões, C. T., Vieira, S. L., Stefanello, C., Kindlein, L., Ferreira, T., Favero, A., and Xavier, B.
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ULTRASONIC imaging ,BREAST ultrasound ,CREATINE kinase ,ASPARTATE aminotransferase ,LACTATE dehydrogenase ,PECTORALIS muscle ,BREAST - Abstract
1. Gradual feed restriction was applied to broilers in order to reduce growth rate and, as a consequence, gradually impacts wooden breast myopathy occurrence. Ultrasound (US) images of breast muscle in live birds were correlated with breast fillets presenting wooden breast characteristics (WB). 2. A total of 1800 Cobb × Cobb 500 slow-feathering male chicks were fed one of the six feed restriction treatments with 12 replicates of 25 birds each, in a completely randomised design. Birds were fed ad libitum or were pair-fed to 50%, 60%, 70%, 80% or 90% of normal ad libitum intakes from 8 to 49 d to provide a gradual reduction in growth rate. Ultrasound images were obtained weekly from all birds and, in parallel, one bird per pen was weekly slaughtered and the major breast muscle was weighed and WB graded as 0 (normal), 1 (mild hardening in the upper), 2 (moderate hardening in the upper and/or lower), 3 (severe hardening) and 4 (severe hardening with haemorrhagic lesions and yellow fluid). Blood was taken for analysis of enzymes related to muscle cell breakdown. 3. Feed restriction applied at 50%, 60%, 70%, 80% and 90% of the ad libitum feed intake (FI) resulted in decreased body weight gain (BWG; P ≤ 0.05). 4. From 21 to 49 d, the increasing feed restriction led to linear increases (P ≤ 0.05) in WB scores, fibre density as well as breast depth and breast echogenicity. Creatine kinase, lactate dehydrogenase and aspartate aminotransferase concentration decreased linearly when broilers were feed restricted (P ≤ 0.05). 5. Wooden breast was positively correlated with echogenicity at 21 d (r = 0.510), 28 (r = 0.531), 35 (r = 0.470), 42 (r = 0.430) and 49 d (r = 0.548) (P ≤ 0.001). The use of breast echogenicity can be an additional tool to early detect alterations related to wooden breast. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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10. Semiclassical Analysis of the Interaction of the Magnetic Quadrupole Moment of a Neutral Particle with Axial Electric Fields in a Uniformly Rotating Frame.
- Author
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Vieira, S. L. R. and Bakke, K.
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QUADRUPOLE moments ,MAGNETIC moments ,ELECTRIC fields ,MAGNETIC fields ,WKB approximation ,SCHRODINGER equation ,MAGNETIC monopoles - Abstract
By exploring the hypothesis of magnetic monopoles, we consider the existence of electric fields produced by magnetic current densities. Then, we consider a uniformly rotating frame with the purpose of searching for effects of rotation on the interaction of axial electric fields with the magnetic quadrupole moment of a neutral particle. Our analysis is made through the WKB (Wentzel, Kramers and Brillouin) approximation. Therefore, by applying the WKB approximation, we search for bound state solutions to the Schrödinger equation in two particular cases. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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11. Translating research findings into clinical practice: a systematic and critical review of neuroimaging-based clinical tools for brain disorders.
- Author
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Scarpazza, C., Ha, M., Baecker, L., Garcia-Dias, R., Pinaya, W. H. L., Vieira, S., and Mechelli, A.
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- 2020
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12. Validation of the spiritual and religious attitudes in dealing with illness (SpREUK) in Portuguese Alzheimer's patients.
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Pereira, M. G., Vilaça, M., Pedras, S., Vieira, S., and Lima, S.
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ALZHEIMER'S patients ,ATTITUDES toward religion ,ATTITUDES toward illness ,CHAPLAINS ,FACTOR structure ,SPIRITUALITY - Abstract
Literature shows that spirituality is a helpful resource for patients to cope with illness, having a positive impact on their quality of life. This study aimed to analyze the psychometric qualities of the Spiritual and Religious Attitudes in Dealing with Illness (SpREUK) using a sample of 128 Portuguese Alzheimer's patients. Results showed that the instrument kept its original factorial structure, with a good adjustment and reliability in all subscales, and associations with quality of life and mindfulness. Therefore, the Portuguese version of the SpREUK has appropriate psychometric properties and is an important resource to assess spirituality in Alzheimer's patients. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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13. Multiresidue analysis and evaluation of the matrix effect on 20 pesticides in Brazilian maize (Zea mays L.) flour.
- Author
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Milhome, M. A. L., Vieira, S. K. V., Reges, B. M., Fernandes, D. R., Uchoa, M. L. P., Pinheiro, A. I., Castro, R. C., Silva, V. P. A., Nobre, C. A., Menezes, M. G. G., Silva, R. O., and do Nascimento, R. F.
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MATRIX effect ,CORN ,PESTICIDES ,FOOD security ,FLOUR - Abstract
Maize consists of a cereal widely used in the preparation of different food products. Brazil is one of the world's largest maize producers. Several types of pesticides have been applied in maize crop, which can lead to the contamination of the derived products. The present work aims at the validation of multiresidue method to analyze the matrix effect and level of pesticides in maize flour. Twenty residues were investigated in samples commercialized in the state of Ceará, Brazil. The method was satisfactorily validated, according to parameters recommended by European Union. About 55% of the pesticides had an intense negative matrix effect. Multiresidue analyzes showed the presence of traces of fenitrotion in 20% of maize flour samples. Detected levels were below maximum residue limits recommended for maize. The results indicate that maize products need continuous monitoring to ensure food security. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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14. Thermal expansion of silver iodide-silver molybdate glasses at low temperatures.
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Mandanici, A., Raimondo, A., Cutroni, M., Ramos, M. A., Rodrigo, J. G., Vieira, S., Armellini, C., and Rocca, F.
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THERMAL expansion ,SILVER iodide ,LOW temperatures ,PHYSICS ,EXTENDED X-ray absorption fine structure - Abstract
Ionic glasses obtained combining silver iodide and silver molybdate are characterized by quite low values of the glass transition temperature T
g around 320–350 K, by high values of the dc ionic conductivity even at room temperature and by a peculiar behavior of the mechanical response at ultrasonic frequencies. In fact, at temperatures well below their glass transition temperature, these glasses exhibit an intense peak of acoustic attenuation well described by two different and almost overlapping relaxational contributions. Considering also that negative thermal expansion has been reported for some molybdate crystalline compounds, we have investigated in this work the thermal expansion of two silver iodomolybdate glasses (AgI)1-x (Ag2 MoO4 )x for x=0.25 and x=0.33 in a wide temperature range (4.2–300 K) from cryogenic temperatures up to some 20 K below Tg using a precision capacitance dilatometer aiming to understand whether the expansivity shows some possible fingerprint corresponding to the above-mentioned mechanical response. Two different measuring methods, a quasiadiabatic and a continuous one, have been used for the thermal expansion measurements. The results are discussed in comparison with the information obtained from previous investigations based on the extended x-ray absorption fine structure (EXAFS) technique and with the behavior of other ionic glasses. [ABSTRACT FROM AUTHOR]- Published
- 2009
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15. Maxwell duality and semiclassical analysis of the interaction of the magnetic quadrupole moment of a neutral particle with external fields.
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Vieira, S. L. R. and Bakke, K.
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QUADRUPOLE moments ,MAGNETIC moments ,MAGNETIC fields ,ELECTRIC charge ,DENSITY currents ,SEMICLASSICAL limits - Abstract
Based on the Maxwell duality, we consider nonuniform magnetic fields produced by nonuniform magnetic charge densities and nonuniform electric fields produced by uniform and nonuniform magnetic current densities. Then, we analyze the interaction of these fields with the magnetic quadrupole moment of a neutral particle from a semiclassical point of view by applying the Wentzel, Kramers, and Brillouin approximation. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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16. Seasonal changes in water sources used by woody species in a tropical coastal dune forest.
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Antunes, C., Silva, C., Máguas, C., Joly, C. A., and Vieira, S.
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WATER supply ,COASTAL forests ,PLANT size ,PLANT growth ,STABLE isotopes - Abstract
Aims: Our aim was to investigate the water sources used by woody species under contrasting water availability and the extent of water-sources-use differentiation among dominant woody species in a tropical coastal dune forest. Methods: We sampled 15 woody species in a Brazilian restinga forest and, through Bayesian isotope mixing models, we estimated the proportion of water sources used. We tested whether water-sources-use was (i) different between contrasting water availability conditions; (ii) dependent on growth form, plant size or crown illumination; and (iii) influenced by stand density, evenness or biomass. Results: We found a seasonal variation in water-sources-use, but no vertical soil-water partitioning among woody species. In wetter periods, plants used mainly water from top-soil, as a shallow water table limited water uptake to top-soil layers recharged with rainwater. Contrastingly, during drier periods, with the absence of rain and a deeper water table, plants generally relied on deeper (50 cm) soil layers. Only under less-wet conditions, a greater evenness and density implied higher water-uptake depth heterogeneity among plants. However, changes in the main water-sources used by plants were neither evoked in more dense or diverse plots, nor induced by plant size. Conclusions: Our study shows that restinga species have dynamic shifts in water-uptake depth caused by seasonal water availability changes, influenced by the combined effect of insufficient moisture at shallow soil layers and water-table lowering in drier periods. These temporal shifts are common among species, implying that restinga woody community has a homogeneous strategy of water-resources acquisition. This study enhances our understanding of the effects that water variations can have on water-resource use in restinga forests. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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17. Translocation of a gut pathobiont drives autoimmunity in mice and humans.
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Vieira, S. Manfredo, Hiltensperger, M., Kumar, V., Zegarra-Ruiz, D., Dehner, C., Khan, N., Costa, F. R. C., Tiniakou, E., Greiling, T., Ruff, W., Barbieri, A., Kriegel, C., Mehta, S. S., Knight, J. R., Jain, D., Goodman, A. L., and Kriegel, M. A.
- Published
- 2018
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18. Toxoplasmic Infection-induced Injury in the Ileal Myenteric Plexus in Rats Depends on the Dose of Toxoplasma gondii Oocysts.
- Author
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Tironi, L. M. T., Beraldi, E. J., Borges, S. C., Massocato, C. L., Vieira, S. L. V., Sant'ana, D. M. G., Araújo, E. J. A., and Buttow, N. C.
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ANIMAL experimentation ,MYENTERIC plexus ,TOXOPLASMA gondii ,OOCYSTS ,IMMUNOFLUORESCENCE - Abstract
Introduction The present study evaluated the effects of different inocula of Toxoplasma gondii oocysts on the ileal myenteric plexus in rats. Materials and Methods Male Wistar rats, 60 days old, were distributed into four groups: control group (CG; which received saline solution) and groups that were infected with 100 (TG100), 1000 (TG1000), and 5000 (TG5000) T. gondii oocysts. Thirty days after infection, the ratswere sacrificed, and the ileumwas collected tomake whole-mount preparations that were subjected to immunofluorescence staining to observe the general neuronal population (HuC/D), nitrergic neurons (nNOS), and enteric glial cells (S100). Morphometric and quantitative analyses of myenteric neurons were performed. Results The infections with different T. gondii inocula did not cause neuronal or glial loss, but cause neuronal hypertrophy in general population and nitrergic subpopulation in infected groups. Conclusion: Changes in neuronalmorphology were observed in the TG5000 group, including the presence of vacuoles, translocation of Hu protein to the nucleus, and dendritic distortions, suggesting functional alterations in these cells. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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19. On the relevance of Kondo disorder in the non-Fermi-liquid behavior of UCu[sub 4]Ni.
- Author
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Lo´pez de la Torre, M. A., Gonza´lez, J. A., Izquierdo, A., Vieira, S., Ellerby, M., and McEwen, K. A.
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KONDO effect ,FERMI liquid theory ,URANIUM compounds ,PHYSICS - Abstract
The electrical, magnetic and thermal properties of UCu[sub 4]Ni show temperature dependencies suggestive of non-Fermi-liquid (NFL) behavior. In this work, we present an interpretation of these properties in terms of a Kondo disorder model for NFL behavior. The overall magnitude and temperature dependence of the magnetic susceptibility and the specific heat are found to be consistent with this model, assuming reasonable values of the relevant parameters, the average Kondo temperature (T[sub K]), the Kondo coupling constant (λ) and the distribution width w. These results are discussed in comparison with those obtained for other NFL systems, as UCu[sub 4]Pd and UCu[sub 3.5]Pd[sub 1.5]. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Published
- 2000
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20. Exercício Físico e Relógio Biológico: Uma revisão de literatura.
- Author
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NUNES, R. S. M., VIEIRA, S. M., ALMEIDA, I. M. H., JUNIOR, I. S., MARTINS, T. O., FILHO, L. D. R., VARGAS, D. A., SILVA, J. R. S., BARBOSA, J. M. S., and VIEIRA, E. C.
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EXERCISE ,CIRCADIAN rhythms ,OBESITY ,DIABETES ,BIOLOGICAL rhythms - Abstract
Copyright of Educação Física em Revista is the property of Educacao Fisica em Revista and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
21. Injectable MnSr-doped brushite bone cements with improved biological performance.
- Author
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Torres, P. M. C., Marote, A., Cerqueira, A. R., Calado, A. J., Abrantes, J. C. C., Olhero, S., da Cruz e Silva, O. A. B., Vieira, S. I., and Ferreira, J. M. F.
- Abstract
Good mechanical properties and high injectability are the major requirements to ensure widespread application of calcium phosphate cements (CPCs) as bone substitutes in minimally invasive surgeries. However, obtaining CPCs that exhibit a good compromise between these two properties as well as good biological performance is still a great challenge. This study presents novel solutions to improve these properties, which include (i) co-doping β-tricalcium phosphate (β-TCP) powder with Sr and Mn, and (ii) adding small amounts of saccharides (sucrose or fructose) to the setting-liquid solution. The combination of these two strategies enabled full injectability and significantly increased the wet compressive strength of CPCs in comparison to undoped or solely Sr-doped CPCs. Furthermore, the proliferative response of human MG63 osteoblastic cells, their rate of collagen-I secretion, and particularly their growth behaviour on the cement surfaces were also enhanced. The overall improved relevant properties of Mn/Sr co-doped CPCs with added sucrose, including in vitro biological performance, renders them very promising materials for bone regeneration and tissue engineering. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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22. SÍNTESE DO PERCLORETO DE FERRO A PARTIR DAS ÁGUAS RESIDUAIS DA PRODUÇÃO DE BIODIESEL TRATADAS POR ELETROFLOCULAÇÃO PARA CONFECÇÃO DE PLACAS DE CIRCUITO IMPRESSO.
- Author
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VIEIRA, S. P., OLIVEIRA, F. C. F., and CAVALCANTI, L. A. P.
- Abstract
Copyright of HOLOS is the property of Instituto Federal do Rio Grande do norte - IFRN and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
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23. Tuber Chemical Composition and Acrylamide Formation Potential in three Potato Cultivars Supplied with two Nitrogen Sources.
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Silva, J., Araújo, A., Vieira, S., and França, M.
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ACRYLAMIDE ,CULTIVARS ,POTATOES ,NITROGEN ,PLANT biomass ,CARBOHYDRATES ,AMINO acids - Abstract
Copyright of American Journal of Potato Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
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24. Tunneling measurements of the energy gap in Tl- and Bi-based oxide superconductors.
- Author
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Vieira, S., Rodrigo, J. G., Ramos, M. A., Agrait, N., Rao, K. V., Makino, Y., and Costa, J. L.
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QUANTUM tunneling ,SUPERCONDUCTORS ,SCANNING tunneling microscopy - Abstract
Presents information on a study which discussed the behavior found in tunneling measurements obtained on two high-T[subc] superconductors using a scanning tunneling microscope. Typical conductance curves for a ceramic sample; Influence of the tunnel barrier on the conductance curves; Existence of smeared conductance curves that display zero-conductance curves.
- Published
- 1990
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25. Testing Real-Time Embedded Systems with Hardware-in-the-Loop Simulation Using High Level Architecture.
- Author
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Junior, Jose Claudio Vieira S., Brito, Alisson V., and Nascimento, Tiago P.
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- 2015
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26. Verification of Devices for Ambient Assisted Living through Hardware-Software Co-simulation.
- Author
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Brito, Alisson Vasconcelos, Vieira S. Junior, Jose Claudio, and Nascimento, Tiago P.
- Published
- 2015
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27. Fuzzy Systems in the Service-Life Prediction of Exterior Natural Stone Claddings.
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Silva, A., Vieira, S. M., de Brito, J., and Gaspar, P. L.
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BUILDING design & construction ,DETERIORATION of buildings ,BUILDING maintenance ,BUILDING repair ,OPTICAL fiber cladding - Abstract
Buildings and their elements are designed to be used for a certain period of time (their service life), fulfilling all requirements for which they were designed without excessive maintenance costs. However, buildings begin to deteriorate because the instant they are put into use, they begin to show a progressive loss of performance until they become obsolete, having deteriorated beyond minimal acceptable levels or having failed to meet economic expectations. Nowadays, mostly for economic and environmental reasons, there is a growing concern about the durability and service life of buildings. This paper discusses the service life prediction of natural stone claddings using a Takagi-Sugeno fuzzy model. The models proposed include variables that influence the degradation of the claddings analyzed. To obtain the models proposed, samples of 140 and 203 façades were subjected to meticulous field work to determine their condition. The service life of the samples was also evaluated and the influence of the characteristics of the claddings on degradation was analyzed. This study demonstrates the usefulness of fuzzy systems to evaluate the service life of exterior stone claddings. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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28. Resistance of cotton genotypes with different leaf colour and trichome density to Bemisia tabaci biotype B.
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Prado, J. C., Peñaflor, M. F. G. V., Cia, E., Vieira, S. S., Silva, K. I., Carlini‐Garcia, L. A., and Lourenção, A. L.
- Subjects
INSECTICIDE resistance ,COTTON ,BEMISIA argentifolii ,TRICHOMES ,SWEETPOTATO whitefly ,ANTIBIOSIS ,PESTICIDES ,OVIPARITY - Abstract
The silverleaf whitefly ( SLW), Bemisia tabaci biotype B, is considered one of the most serious pests in cotton worldwide. Its control is based on the use of pesticides, which are well-known for their harmful effects on non-target organisms and the environment. Here, we examined resistance of several cotton genotypes in terms of antixenosis and antibiosis against SLW. We also investigated the mechanisms of cotton genotypes involved in antixenosis against SLW by correlating with leaf trichome density and leaf colour parameters. In choice tests, we selected resistant cotton genotypes, Gossypium hirsutum palmeri, Aubum 56-7, G. hirsutum morrilli, Mocó, Nu-16 (B2 B3 B6)- 78/658, Paymaster 53-816 and ' IAC 23', based on SLW oviposition and host preference. No-choice tests with these genotypes confirmed antixenosis effect on SLW; however, no antibiosis resistance was detected in terms of developmental period and adult emergence rate. We found SLW oviposition preference was positively correlated with trichome density in the abaxial leaf surface, while adult host preference was mostly explained by high levels of green intensity of adaxial surface. Nevertheless, both SLW oviposition and host preference were negatively correlated with the lightness level of adaxial leaf surface. Probably, the underlying mechanism of cotton resistance is based on more than just these two parameters, but our study will contribute to selecting resistant cotton genotypes and helps to understand the mechanisms involved in cotton resistance against SLW. To our best knowledge, this is the first work showing that cotton leaf colour parameters are related to resistance against SLW. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
29. New portable instrument for the measurement of thermal conductivity in gas process conditions.
- Author
-
Queirós, C. S. G. P., Lourenço, M. J. V., Vieira, S. I., Serra, J. M., and Nieto de Castro, C. A.
- Subjects
RESISTANCE thermometers ,THERMAL conductivity measurement ,THERMAL conductivity ,GASES ,HIGH temperatures ,TEMPERATURE measurements ,EQUIPMENT & supplies - Abstract
The development of high temperature gas sensors for the monitoring and determination of thermophysical properties of complex process mixtures at high temperatures faces several problems, related with the materials compatibility, active sensing parts sensitivity, and lifetime. Ceramic/thin metal films based sensors, previously developed for the determination of thermal conductivity of molten materials up to 1200 °C, were redesigned, constructed, and applied for thermal conductivity measuring sensors. Platinum resistance thermometers were also developed using the same technology, to be used in the temperature measurement, which were also constructed and tested. A new data acquisition system for the thermal conductivity sensors, based on a linearization of the transient hot-strip model, including a portable electronic bridge for the measurement of the thermal conductivity in gas process conditions was also developed. The equipment is capable of measuring the thermal conductivity of gaseous phases with an accuracy of 2%-5% up to 840 °C (95% confidence level). The development of sensors up to 1200 °C, present at the core of the combustion chambers, will be done in a near future. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
30. New challenges beyond nutrition: c-section, air pollution and domestic violence.
- Author
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Ferraro, A. A., Fernandes, M. T. B., and Vieira, S. E.
- Abstract
The DOHaD research field has successfully associated adult non-communicable diseases with inadequate nutrition in early periods of life. More recently, different types of exposure have been linked with impaired developmental outcomes and later health consequences, such as cesarean section at delivery, air pollution and domestic violence during pregnancy. The aim of this work is to bring up this issue looking at the published evidence on these three highly prevalent hazards in Latin American countries. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
31. Publisher Correction: Artisanal shark fishing in Milne Bay Province, Papua New Guinea: biomass estimation from genetically identified shark and ray fins.
- Author
-
Appleyard, S. A., White, W. T., Vieira, S., and Sabub, B.
- Subjects
SHARK fishing ,BIOMASS ,FINS (Anatomy) - Published
- 2021
- Full Text
- View/download PDF
32. Stellar parameters for stars of the CoRoT exoplanet field.
- Author
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Cortés, C., Maciel, S. C., Vieira, S., Lopes, C. E. Ferreira, Leão, I. C., de Oliveira, G. P., Correia, C., Martins, B. L. Canto, Catelan, M., and De Medeiros, J. R.
- Subjects
EXTRASOLAR planets ,STELLAR evolution ,ANGULAR momentum (Mechanics) - Abstract
Context. Spectroscopic observations represent a fundamental step in the physical characterization of stars and, in particular, in the precise location of stars in the HR diagram. Rotation is also a key parameter, impacting stellar properties and evolution, which modulates the interior and manifests itself on the surface of stars. To date, the lack of analysis based on large samples has prevented our understanding of the real impact of stellar parameters and rotation on the stellar evolution as well as on the behavior of surface abundances. The space missions, CoRoT and Kepler, are providing us with rotation periods for thousands of stars, thus enabling a robust assessment of the behavior of rotation for different populations and evolutionary stages. For these reasons, the followup programs are fundamental to increasing the returns of these space missions. An analysis that combines spectroscopic data and rotation/modulation periods obtained from these space missions provides the basis for establishing the evolutionary behavior of the angular momentum of solar-like stars at different evolutionary stages, and the relation of rotation with other relevant physical and chemical parameters. Aims. To support the computation and evolutionary interpretation of periods associated with the rotational modulation, oscillations, and variability of stars located in the CoRoT fields, we are conducting a spectroscopic survey for stars located in the fields already observed by the satellite. These observations allow us to compute physical and chemical parameters for our stellar sample. Methods. Using spectroscopic observations obtained with UVES/VLT and Hydra/Blanco, and based on standard analysis techniques, we computed physical and chemical parameters (T
eff , log (g), [Fe/H], wmic , vrad , v sin (i), and A (Li)) for a large sample of CoRoT targets. Results. We provide physical and chemical parameters for a sample comprised of 138 CoRoT targets. Our analysis shows the stars in our sample are located in different evolutionary stages, ranging from the main sequence to the red giant branch, and range in spectral type from F to K. The physical and chemical properties for the stellar sample are in agreement with typical values reported for FGK stars. However, we report three stars presenting abnormal lithium behavior in the CoRoT fields. These parameters allow us to properly characterize the intrinsic properties of the stars in these fields. Our results reveal important differences in the distributions of metallicity, Teff, and evolutionary status for stars belonging to different CoRoT fields, in agreement with results obtained independently from ground-based photometric surveys. Conclusions. Our spectroscopic catalog, by providing much-needed spectroscopic information for a large sample of CoRoT targets, will be of key importance for the successful accomplishment of several different programs related to the CoRoT mission, thus it will help further boost the scientific return associated with this space mission. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
33. Designing closed-loop supply chains with nonlinear dimensioning factors using ant colony optimization.
- Author
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Vieira, P., Vieira, S., Gomes, M., Barbosa-Póvoa, A., and Sousa, J.
- Subjects
CLOSED loop systems ,ANT algorithms ,SUPPLY chain management ,MIXED integer linear programming ,INDUSTRIAL capacity ,MATHEMATICAL models - Abstract
Closed-loop supply chain (CLSC) design implies the modelling of the forward and the reverse flows of products in an integrated way. This paper introduces nonlinear dimensioning factors in the design of CLSC and uses ant colony optimization to optimize the design of the supply chain. The proposed algorithm is called SCAnt-NLDesign. The modelled nonlinear dimensioning factors are: cost variations in transportation distances between facilities (tapering principle), scale economies related to transported quantities, and scale economies regarding the facilities' capacity. Results show that the proposed SCAnt-NLDesign algorithm reduced the total cost in 44 %, when compared to a linear formulation of a CLSC. Note also that a mixed integer linear programming implementation of the nonlinear CLSC was not able to get closed to the optimal solution, given worse results than the linear CLSC. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
34. Three axis vector magnet set-up for cryogenic scanning probe microscopy.
- Author
-
Galvis, J. A., Herrera, E., Guillamón, I., Azpeitia, J., Luccas, R. F., Munuera, C., Cuenca, M., Higuera, J. A., Díaz, N., Pazos, M., García-Hernandez, M., Buendía, A., Vieira, S., and Suderow, H.
- Subjects
MAGNETS ,SCANNING probe microscopy ,MAGNETIC fields ,SCANNING tunneling microscopy ,ELECTRONICS - Abstract
We describe a three axis vector magnet system for cryogenic scanning probe microscopy measurements. We discuss the magnet support system and the power supply, consisting of a compact three way 100 A current source. We obtain tilted magnetic fields in all directions with maximum value of 5T along z-axis and of 1.2T for XY-plane magnetic fields. We describe a scanning tunneling microscopy-spectroscopy (STM-STS) set-up, operating in a dilution refrigerator, which includes a new high voltage ultralow noise piezodrive electronics and discuss the noise level due to vibrations. STM images and STS maps show atomic resolution and the tilted vortex lattice at 150 mK in the superconductor β-Bi
2 Pd. We observe a strongly elongated hexagonal lattice, which corresponds to the projection of the tilted hexagonal vortex lattice on the surface. We also discuss Magnetic Force Microscopy images in a variable temperature insert. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
35. Avaliação da poluição por metais pesados/metaloides em solos após oito décadas de intensa exploração mineira - o caso de estudo da mina da Borralha, Portugal.
- Author
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Ávila, P. F., Vieira, S., Candeias, C., and da Silva, E. Ferreira
- Abstract
Copyright of Comunicaçõe Geológicas is the property of Laboratorio Nacional de Energia e Geologia, I.P. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
36. Calypso® 4D Localization System: a review.
- Author
-
Silva, C., Mateus, D., Eiras, M., and Vieira, S.
- Abstract
PurposeCalypso® 4D Localization System is a system based on electromagnetic transponders detection enabling precise 3D localisation and continuous tracking of tumour target. This review intended to provide information in order to (1) show how Calypso® 4D Localization System works, (2) to present advantages and disadvantages of this system, (3) to gather information from several clinical studies and, finally, (4) to refer Calypso® System as a tool in dynamic multileaf collimator studies for target motion compensation.MethodsA structured search was carried out on B-On platform. The key words used in this research were ‘Calypso’, ‘Transponder’, ‘Electromagnetic Localization’, ‘Electromagnetic Tracking’, ‘Target Localization’, ‘Intrafraction Motion’ and ‘DMLC’.ReviewTreatment the implanted transponders are excited by an electromagnetic field and resonate back. These frequencies are detected and Calypso® software calculates the position of the transponders. If the movement detected is larger than the limits previously defined, irradiation can be stopped. The system has been proven to be submillimetre accurate.DiscussionCalypso® System has been presented as an accurate tool in prostate radiotherapy treatments. The application of this system to other clinical sites is being developed.ConclusionThe Calypso® System allows real-time localisation and monitoring of the target, without additional ionising radiation administration. It has been a very useful tool in prostate cancer treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
37. Calypso® 4D Localization System: a review.
- Author
-
Silva, C., Mateus, D., Eiras, M., and Vieira, S.
- Subjects
RADIOTHERAPY ,ELECTROMAGNETISM ,LUNG tumors ,PROSTATE tumors ,SYSTEMATIC reviews ,EVIDENCE-based medicine ,PRODUCT design - Abstract
PurposeCalypso® 4D Localization System is a system based on electromagnetic transponders detection enabling precise 3D localisation and continuous tracking of tumour target. This review intended to provide information in order to (1) show how Calypso® 4D Localization System works, (2) to present advantages and disadvantages of this system, (3) to gather information from several clinical studies and, finally, (4) to refer Calypso® System as a tool in dynamic multileaf collimator studies for target motion compensation.MethodsA structured search was carried out on B-On platform. The key words used in this research were ‘Calypso’, ‘Transponder’, ‘Electromagnetic Localization’, ‘Electromagnetic Tracking’, ‘Target Localization’, ‘Intrafraction Motion’ and ‘DMLC’.ReviewTreatment the implanted transponders are excited by an electromagnetic field and resonate back. These frequencies are detected and Calypso® software calculates the position of the transponders. If the movement detected is larger than the limits previously defined, irradiation can be stopped. The system has been proven to be submillimetre accurate.DiscussionCalypso® System has been presented as an accurate tool in prostate radiotherapy treatments. The application of this system to other clinical sites is being developed.ConclusionThe Calypso® System allows real-time localisation and monitoring of the target, without additional ionising radiation administration. It has been a very useful tool in prostate cancer treatment. [ABSTRACT FROM PUBLISHER]
- Published
- 2014
- Full Text
- View/download PDF
38. Digestibility marker and ileal amino acid digestibility in phytase-supplemented soybean or canola meals for growing pigs.
- Author
-
Favero, A., Ragland, D., Vieira, S. L., Owusu-Asiedu, A., and Adeola, O.
- Subjects
DIGESTION ,CANOLA meal as feed ,SOYBEAN as feed ,AMINO acids in the body ,ILEUM physiology ,ANIMAL development ,SWINE - Abstract
Two experiments using soybean meal (SBM) or canola meal (CM) were conducted to investigate whether the choice of digestibility marker influenced the apparent ileal digestibility (AID) or standardized ileal digestibility (SID) of N and AA in diets supplemented with phytase. In each experiment, 18 barrows fitted with T-cannulas at the ileocecal junction were assigned to 3 diets consisting of a N-free diet to determine endogenous losses of N and AA, a semipurified diet (SBM in Exp. 1 or CM in Exp. 2), and the semipurified diet supplemented with phytase at 1,000 phytase units/kg. Three digestibility markers including acid-insoluble ash (AIA), chromic oxide (Cr
2 O3 ), and titanium dioxide (TiO2 ) were added to each diet at 3 g/kg. Each diet was fed for 7 d, consisting of a 5-d adjustment and a 2-d collection of ileal digesta. In both studies, basal ileal endogenous losses determined with Cr203 as a digestibility marker were lower (P < 0.01) than with those detennined with AIA or Ti00 digestibility markers. Using SBM as the protein source in Exp. 1, there was no interaction between phytase and digestibility marker on AID or SID of AA. The AID of N and AA in SBM using AIA as a digestibility marker tended to be lower (P < 0.1) compared with Cr2 O3 or TiO2 digestibility markers. Phytase supplementation increased (P < 0.001) the AID of Ca and P. The use of ALA. or Cr203 digestibility marker tended to be associated with lower (P < 0.1) SID values compared with Ti(X Phytase did not affect the SID of N or any AA in SBM except for Met, for which there was an increase (P < 0.05) with phytase supplementation. Using CM as the protein source in Exp. 2, there were significant interactions between digestibility marker and phytase. Phytase supplementation had effects (P <0.01) on AID or SID when Cr2 O3 or TiO2 was used as the digestibility marker. With Cr2 O3 or TiO2 as the digestibility marker in the CM diets, phytase supplementation increased (P < 0.05) the SID of N and all AA (except Trp). There was no SID of N or AA response to phytase supplementation of CM when AIA was used as a digestibility marker. In contrast, there were no clear improvements in AA digestibility from phytase supplementation for SBM. Phytase effects on AID or SID of AA were dependent on the digestibility marker used in diets when CM was used as the protein source but not when SBM was used as the protein source. Therefore, AA digestibility response to phytase supplementation may depend on the protein being evaluated as well as the choice of digestibility marker. [ABSTRACT FROM AUTHOR]- Published
- 2014
- Full Text
- View/download PDF
39. Systematic Literature Review: Influence of Low-Level Laser on Orthodontic Movement and Pain Control in Humans.
- Author
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Sousa, Marinês Vieira S., Pinzan, Arnaldo, Consolaro, Alberto, Henriques, José Fernando Castanhas, and de Freitas, Marcos Roberto
- Published
- 2014
- Full Text
- View/download PDF
40. Enhancement of long-range correlations in a 2D vortex lattice by an incommensurate 1D disorder potential.
- Author
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Guillamón, I., Córdoba, R., Sesé, J., Ibarra, M. R., De Teresa, J. M., Vieira, S., and Suderow, H.
- Subjects
TWO-dimensional models ,PAIRING correlations (Nuclear physics) ,CRYSTAL lattices ,LATTICE dynamics ,LONG range order (Solid state physics) ,ONE-dimensional potential barriers ,ORDER-disorder transformation (Statistical physics) - Abstract
Long-range correlations in two-dimensional (2D) systems are significantly altered by disorder potentials. Theory has predicted the existence of disorder-induced phenomena, such as Anderson localization or the emergence of a Bose glass. More recently, it has been shown that when disorder breaks 2D continuous symmetry, long-range correlations can be enhanced. Experimentally, developments in quantum gases have allowed the observation of the effects of competition between interaction and disorder. However, experiments exploring the effect of symmetry-breaking disorder are lacking. Here, we create a 2D vortex lattice at 0.1 K in a superconducting thin film with a well-defined 1D thickness modulation-the symmetry-breaking disorder-and track the field-induced modification using scanning tunnelling microscopy. We find that the 1D modulation becomes incommensurate with the vortex lattice and drives an order-disorder transition, behaving as a scale-invariant disorder potential. We show that the transition occurs in two steps and is mediated by the proliferation of topological defects. The resulting critical exponents determining the loss of positional and orientational order are far above theoretical expectations for scale-invariant disorder and follow instead the critical behaviour describing dislocation unbinding melting. Our data show that randomness disorders a 2D crystal, with enhanced long-range correlations due to the presence of a 1D modulation. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
41. Predicting intensive care unit readmissions using probabilistic fuzzy systems.
- Author
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Fialho, A. S., Kaymak, U., Cismondi, F., Vieira, S. M., Reti, S. R., Sousa, J. M. C., and Finkelstein, S. N.
- Published
- 2013
- Full Text
- View/download PDF
42. Spatial and temporal variability of soybean and maize yield after 27 years of no-tillage in São Paulo, Brazil.
- Author
-
Vieira, S., Dechen, S., Rodrigues, K., and Hurtado, S.
- Published
- 2013
- Full Text
- View/download PDF
43. Smart homes and smart buildings.
- Author
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Martins, J. F., Oliveira-Lima, J. A., Delgado-Gomes, V., Lopes, Rui, Silva, D., Vieira, S., and Lima, C.
- Abstract
Actual power systems are evolving towards the Smart Grid concept. Being buildings part of the grid, and considering their distributed generation and controllable demand capabilities, they are becoming key players in the framework of liberalized electricity markets. New integrated smart homes and buildings will contribute to the protection of the earth environment while reducing their operational costs. They will take into account not only technical issues of their integrated sub-systems but also users requirements. In order to fulfil these goals an accurate building model could be considered using a standard-based communication infrastructure, linking all buildings elements (physical and human) and allowing buildings to become an active part of the smart grid itself. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
- Full Text
- View/download PDF
44. Probabilistic fuzzy prediction of mortality in intensive care units.
- Author
-
Fialho, A. S., Kaymak, U., Almeida, R. J., Cismondi, F., Vieira, S. M., Reti, S. R., Sousa, J. M. C., and Finkelstein, S. N.
- Abstract
In the present work, we propose the application of probabilistic fuzzy systems (PFS) to model the prediction of mortality in septic shock patients. This technique is characterized by the combination of the linguistic description of the system with the statistical properties of data. Preliminary results for this particular clinical problem point that PFS models, besides performing as accurately as first order Takagi-Sugeno fuzzy models, also provide probability measures that provide additional clinical information upon which physicians can act on. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
- Full Text
- View/download PDF
45. Home energy saving adviser system.
- Author
-
Silva, D., Vieira, S., Lima, C., and Martins, J.F.
- Published
- 2011
- Full Text
- View/download PDF
46. Scanning Tunnelling Spectroscopy of Vortices with Normal and Superconducting tips.
- Author
-
Rodrigo, J. G., Suderow, H., and Vieira, S.
- Abstract
Scanning tunnelling microscopy and spectroscopy (STM/S) has proved to be a powerful tool to study superconductivity down to atomic level. Vortex lattice studies require characterizing areas of enough size to contain a large number of vortices. On the other hand, it is necessary to combine this capability with high spectroscopic and microscopic resolution. This is a fundamental aspect to measure and detect the subtle changes appearing inside and around a single vortex. We report in this chapter our approach to the use of STM/S, using normal and superconducting tips, to observe the lattice of vortices in several compounds, and the information acquired inside these fascinating entities. The combination of superconducting tips and scanning tunneling spectroscopy, (ST)
2 S, presents advantages for the study of superconducting samples. It allows to distinguish relevant features of the sample density of states, which manifest itself as small changes in the Josephson coupling between sample and tip condensates, and it has also shown to be very efficient in the study of the ferromagnetic-superconductor transition in the re-entrant superconductor ErRh4 B4 . [ABSTRACT FROM AUTHOR]- Published
- 2010
- Full Text
- View/download PDF
47. Transport properties of superconducting amorphous W-based nanowires fabricated by focused-ion-beam-induced-deposition for applications in Nanotechnology.
- Author
-
De Teresa, J.M., Fernández-Pacheco, A., Córdoba, R., Sesé, J., Ibarra, M.R., Guillamón, I., Suderow, H., and Vieira, S.
- Published
- 2009
- Full Text
- View/download PDF
48. TRANSIENT BEHAVIOR OF THE MICROSTRUCTURE OF ELECTRORHEOLOGICAL FLUIDS IN SHEAR FLOW MODE.
- Author
-
VIEIRA, S. L., NAKANO, M., HENLEY, S., FILISKO, F. E., Pompeo Neto, I. B., and ARRUDA, A. C. F.
- Subjects
ELECTRORHEOLOGICAL fluids ,MICROSTRUCTURE ,SHEAR flow ,ELECTRIC fields ,SHEARING force - Published
- 2000
49. MECHANICAL PROPERTIES OF AN ER FLUID IN TENSILE, COMPRESSION AND OSCILLATORY SQUEEZE TESTS.
- Author
-
VIEIRA, S. L., NAKANO, M., OKE, R., and NAGATA, T.
- Subjects
ELECTRORHEOLOGICAL fluids ,ELECTRIC fields ,HYSTERESIS loop ,TENSILE strength ,MICROSTRUCTURE - Published
- 2000
50. A INICIAÇÃO CIENTÍFICA NO ENSINO MÉDIO INTEGRADO COMO POSSIBILIDADE DE UMA PRÁTICA INTEGRADORA: ESTUDO DE CASO ATRAVÉS DO RESGATE DA MEMÓRIA DA VITIVINICULTURA EM VIDEIRA, SANTA CATARINA.
- Author
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GRÜMM, C. A. F., VIEIRA, S. F., and BRITO, L. M.
- Subjects
SCHOOL integration ,BIOLOGY ,GEOGRAPHY ,SECONDARY education ,TEACHERS ,UNDERGRADUATES - Abstract
Copyright of HOLOS is the property of Instituto Federal do Rio Grande do norte - IFRN and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
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