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Magnetic bearings with double crossed loops modelled with T-A formulation and electric circuits

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Superconductivity 2023年第3期7卷 65-74页

作者： Bárbara Maria Oliveira Santos Gabriel dos Santos Flávio Goulart dos Reis Martins Felipe Sass Guilherme Gonçalves Sotelo rubens de andrade junior Francesco Grilli Electrical Engineering department Rio de Janeiro State UniversityRio de Janeiro20550-900Rio de JaneiroBrazil Electrical Engineering department Universidade Federal FluminenseNiterói24210-240Rio de JaneiroBrazil Electrical Engineering department Universidade Federal do Rio de JaneiroRio de Janeiro21941-909Rio de JaneiroBrazil Institute for Technical Physics Karlsruhe Institute of TechnologyKarlsruhe76131Germany

The application of High‐Temperature Superconductor(HTS)coils made of coated conductors has been investigated for many years.A possible configuration for such coils is the jointless loop,also known as the ring *** double crossed loop coil(DCLC)has been successfully applied in superconducting magnetic bearings(SMBs).The design of SMBs with DCLCs requires flexible modelling to allow all parts of the device to be *** work proposes the T‐A formulation with a thin‐film approximation for modelling SMB with DCLCs in the finite element analysis framework.A 2D representation of the system is coupled with an external electric circuit to model the continuity of the lines that represent the parts of each jointless *** couple the T‐A formulation and the circuit,an average of the total electric field,with both resistive and inductive components,is applied to the *** total current computed by the circuit is applied to the T‐A *** proposed methodology was validated by comparison with levitation force experimental *** types of tests were simulated:five levitation force tests and three guidance force *** is shown that there is a limit to the behaviour of the levitation force related to the high‐loss *** this limit,the stack of DCLCs behaves as an equivalent *** this limit,a high‐loss state appears as a linear growth of the levitation *** is also shown that this high‐loss state in vertical displacement influences the lateral force.

关键词： Coated conductors Jointless loops T‐A formulation

Microbial enzymatic stoichiometry and the acquisition of C, N,and P in soils under different land-use types in Braziliansemiarid

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Soil Ecology Letters 2023年第3期5卷 101-108页

作者： Erika Valente de Medeiros Érica de Oliveira Silva Gustavo Pereira Duda Mario andrade Lira junior Uemeson Josédos Santos Claude Hammecker Diogo Paes da Costa Fabio Fernando Araujo Arthur Prudêncio de Araujo Pereira Lucas William Mendes Ademir Sergio Ferreira Araujo Laboratory of Microbiology and Enzymology-LEMA Federal University of Agreste PernambucoGaranhuns 55292-270Brazil Federal Rural University of Pernambuco Rua Dom Manuel de Medeiross/nDois Irmãos52171-900RecifeBrazil Soil-Agrosystem-Hydrosystem Interaction Lab-LISAH Place Pierre Viala234060 MontpellierFrance Universidade do Oeste Paulista Presidente PrudenteSPBrazil departamento de Ciência Do Solo Universidade Federal Do CearáFortalezaCEBrazil Center for Nuclear Energy in Agriculture University of Sao PauloPiracicabaSPBrazil Soil Quality Lab Agricultural Science CenterFederal University of PiauíTeresinaPI 60049-550Brazil

This study hypothesized that different land-use affect the microbial enzymatic stoichiometry and C-,N-,and P-acquisition in Brazilian semiarid ***,the enzymesβ-glucosidase(C-acquiring enzyme),urease(N-acquiring enzyme),and acid phosphatase(P-acquiring enzyme)were assessed in soil samples collected at 0−5 and 5−10 cm depth from a tropical dry forest,a protected area with Angico,a protected area with Ipê,scrub area,and an agricultural area with *** values of C-,N-,and P-acquiring enzymes were used to calculate the enzymatic C:N,C:P,and N:P *** values of C:P and N:P ratios were higher at 0−5 cm depth,while no significant variation,between soil depth,was observed for C:N *** values of C-and N-acquiring enzymes were higher at 0−5 cm in tropical dry forest areas and Angico forest,*** all land use types,the values of vectors L and A were higher than 1°and 45°,*** study showed that both land-use and soil depth influence the enzymatic stoichiometry,showing higher values of C-and N-acquiring enzymes in native and protected forests at soil surface.

关键词： C:N:P stoichiometry tropical forests soil depth Luvisols

Care Measures and Health Outcomes in a Pediatric Intensive Care Unit in Brazil

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Open Journal of Pediatrics 2023年第5期13卷 697-706页

作者： Arnildo Linck junior Flávia Lopes Gabani Edmarlon Girotto Ana Maria Rigo Silva Selma Maffei andrade department of Pediatrics and Pediatric Surgery Universidade Estadual de Londrina Londrina Brazil

Introduction: In low- and middle-income countries, including Brazil, conditions that favor mortality in the PICU remain significant. Compared to developed countries, there is a shortage of skilled human resources, lower availability of technological resources, greater difficulty of access and a higher incidence of infections, including both those acquired prior to admission and those resulting from treatment and hospitalization (i.e., healthcare-associated infections (HAIs)). HAIs in the PICU include ventilator-associated pneumonia and catheter-related bloodstream infections. Actions for the prevention of HAIs can minimize the occurrence of negative outcomes. Materials and Methods: This is an epidemiological study comparing admissions at the PICU of a high-complexity hospital in South Brazil over two three-year periods: 2012-2014 (before the measures were adopted) and 2015-2017 (after the measures). The care measures were adopted mainly at the beginning of 2015 and consisted of expansion of physical therapy care, adoption of care protocols, acquisition of new materials and equipment (transparent dressings for central catheters, high-tech mechanical ventilators and multiparametric monitors) and multidisciplinary team training. The frequency of the outcomes mortality, length of PICU stay, diagnosis of catheter-related bloodstream infection, need for and duration of ventilatory support and diagnosis of ventilator-associated pneumonia were compared between the two trienniums using logistic regression with adjustment for age in months and need of vasoactive drugs. Results: A total of 1140 admissions were analyzed (470 in the first triennium and 670 in the second), representing an increase in the admission rate of 42.6% after the adoption of the measures. After adjustments, significant reductions in the frequency of mortality (adjusted OR [adjOR] = 0.54;CI 95%: 0.34 - 0.84), length of PICU stay > 7 days (adjOR = 0.75;CI 95%: 0.57 - 0.97) and duration of ventilatory suppor

关键词： Pediatric Intensive Care Units Outcomes Assessment In-Hospital Mortality Hospital Stay Mechanical Ventilation Catheter-Related Infections

Are models of volumetric production at the diametric distribution and total stand level mutually compatible?

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Journal of Forestry Research 2020年第5期31卷 1691-1698页

作者： Marcos Felipe de Oliveira Valeriano Eder Pereira Miguel Pedro Guilherme de andrade Vasconcelos Mauro Eloi Nappo Humberto Angelo Alba Valeria Rezende Renan Augusto Miranda Matias Leonardo Job Biali Ilvan Medeiros Lustosa junior department of Forestry Engineering University of Brasilia(UnB)Brası´liaBrazil Federal Institute of Brasılia(IFB) BrasıliaBrazil

The objective of this work was to compare estimates generated by a diametric distribution model and a total stand model against the pre-cut *** model efficiency was also *** were evaluated from 30 permanent sample plots in a Eucalyptus urophylla stand,comprising 24 sample plots used for model fitting,and six sample plots for *** volume of wood per hectare was estimated for different productive units(sites),using 7 years as the reference *** model adjustment quality was verified by adjustment and precision statistics:the correlation between observed and predicted variables,root mean square error percentage,graphical analysis of residual distribution,and a frequency histogram for classes of relative errors and *** the two-parameter Weibull probability density function adhered to the data for tree evolution in diameter classes for the reference age(7 years)in the different productivity classes,it generated imprecise estimates of the number of ***,it produced inaccurate volumetric production *** total stand model provided reliable projections of production volumes in different productivity classes for both adjustment types,showing compatibility with the pre-cut inventory according to a Tukey *** summary,the total stand model generated estimates that were compatible with the pre-cut inventory while the diametric distribution model did not.

关键词： Clutter model Diameter class Eucalyptus Prognosis

Characterization of a New Methodology Based on the Intensity of Skin Staining of Ornamental Fish with Applications in Nutrition

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Journal of Agricultural Science and Technology(B) 2012年第5期2卷 606-613页

作者： Fabricio Pereira Rezende Manuel Vazquez Vidal junior Dalcio Ricardo de andrade Embrapa Fisheries and Aquaculture Brazilian Agricultural Research Corporation Center for Agricultural Science and Technology North Fluminense State University

The colors presented in ornamental fish determine their acceptability in the market, which is one of the main factors which determine their price. Selecting the fish by only looking at them makes the result analysis based in statistics difficult. Thus, it has become necessary to develop a method of quantification for practical use, which will apply minimal stress to the fish while being economically feasible. The proposed method uses a technique which converts the colors of interest to numerical indexes usable in statistical methods of higher precision. The results increase the abilities of fish nutrition researchers aiming to intensify the color characteristics of fish through selective breeding and genetic engineering with the intent of reliably achieving the desired visual characteristics for commercialization.

关键词：鱼类营养观赏鱼染色强度表征皮肤应用统计方法颜色转换

Comparison of Three Experimental Models for Rat Osteoarthritis Induction

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Journal of Biosciences and Medicines 2016年第12期4卷 62-69页

作者： Henrique Ribeiro Rodrigues-Neto Edilson Ferreira andrade-junior denilson Jose Silva Feitosa-junior André Lopes Valente Thiago Cesar Xavier Bianca Caroline do Nascimento Alho Renan Kleber Costa Teixeira Fabio Vidal Moriya Rui Sérgio Monteiro de Barros department of Orthopaedics and Traumatology Porto Dias Hospital Bel&eacute m Brazil Experimental Surgery Laboratory Par&aacute State University Bel&eacute m Brazil

Background: Osteoarthritis is a slowly progressive and debilitating disease with high prevalence in adult population. Knee is one of the joints most affected by this disorder. There are several models for animals’ osteoarthritis induction, however it is not identified any paper that compares these techniques. The present study was aimed to define the most appropriate model for rats osteoarthritis induction. Material and Methods: 40 Wistar rats were distributed into 4 groups of 10 animals each: normality group (NG);meniscectomy group (MG);quinolone group (QG) and iodoacetate group (IG). Radiographic images of the rat’s knees were analyzed as well as the amount of chondrocytes in the epiphyseal and articular cartilage. Results: In the radiographic analysis, there was a low correlation between the raters. Regarding the amount of chondrocytes in the epiphyseal cartilage, it was noticed that the IG and QG groups had fewer chondrocytes than NG, in contrast to MG that reported similar results to normality (p > 0.05). There was no significant difference between IG and QG groups (p > 0.05). Regarding the amount of chondrocytes in articular cartilage, it was noticed that the IG group showed fewer chondrocytes than NG (p 0.05). There was no significant difference between QG and MG groups (p > 0.05). Conclusion: Intraarticular injection of iodoacetate in rats is the model with greatest effect on reduction of chondrocytes amount.

关键词： Osteoarthritis Knee Joint Experimental Arthritis Animal Disease Models Rats

Chemical Quality Indexes of Mullet (<i>Mugil platanus</i>) Stored on Ice

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Food and Nutrition Sciences 2014年第11期5卷 1030-1039页

作者： Sabrina da Costa Silva andrade Eliane Teixeira Mársico Ronoel Luiz de Oliveira Godoy Sidney Pacheco Robson Maia Franco Sérgio Borges Mano Carlos Adam Conte-junior department of Food Technology UFF Niterói Brazil Embrapa Food Agroindustry Rio de Janeiro Brazil Graduation Program in Veterinary Hygiene and Technological Process of Products of Animal Origin Fluminense Federal University Niterói Brazil

The present study was conducted aiming at establishing chemical quality parameters to assess ice stored mullet (0℃ ± 1℃) through the evaluation of nucleotide (adenosine monophosphate [AMP], inosine [HxR] and hypoxanthine [Hx]) degradation, biogenic amine (histamine [HI], putrescine [PU], cadaverine [CA] and tyramine [TI]) quantification and mesophilic and psychrotrophic bacteria count monitoring. The microbial load of 7 log CFU·g–1 established as maximum acceptable limit was attained after the 20th day of ice storage. IMP concentration declined during the storage period to levels below the detection limit. HxR content increased only up to time T3 and then declined. Hx level increased during all the storage period. CA and HI content increase was not observed, on the other hand, PU and TI contents significantly increased (p ded that IMP and Hx concentrations can be adequate parameters to assess mullet quality under the study conditions. HxR proved to be adequate to evaluate the freshness of mullet in the first days of storage while the amines, PU and TI, can be used to assess loss of quality. Mullet obtained in conditions similar to those of the present study and maintained at 0℃ ± 1℃ can be consumed up to the 20th storage day.

关键词： Quality Parameters Biogenic Amines Nucleotides Hypoxanthine Mugilidae

Biotechnological Potential of Endophytic Bacteria to Improve the Micropropagated Seedling of Variety RB92579 Sugarcane(Saccharum officinarum L.)

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Advances in Microbiology 2018年第11期8卷 859-873页

作者： Maria do Carmo Silva Barreto Márcia do Vale Barreto Figueiredo Márcia Vanusa da Silva Arnóbio Gon?alves de andrade José de Paula de Oliveira Clébia Maria Alves Almeida Livia Caroline Alexandre de Araújo Odemar Vicente dos Reis junior Manoel Urbano Ferreira junior Antonio Félix da Costa Vera Lucia de Menezes Lima departamento de Bioquímica Centro de Biociências Universidade Federal de Pernambuco Recife Brazil Laboratório de Biologia do Solo Instituto Agron&#244 mico de Pernambuco Recife Brazil departamento de Química Universidade Federal Rural de Pernambuco Recife Brazil Centro de Tecnologias Estratégicas do Nordeste Recife Brazil

Endophytic bacteria may influence agricultural production in several ways, including promoting plant growth. Two experiments were conducted in order to evaluate the combination of endophytic bacteria from the Brazilian Northeast region aims at the commercial introduction of the inoculation of these bacteria in micropropagated sugarcane plants using a temporary immersion bioreactor. One experiment was done in tubes with sterile commercial substrate, and the other was done in pots with soil;both were installed in a greenhouse. A mixed inoculation was performed in six inoculated endophytic diazotrophic bacteria in micropropagated sugarcane plants, variety RB92579. In the experiment with soil, the mixed inoculation significantly increased the shoot dry matter of plants without the addition of nitrogen fertilizer. However, the accumulation of total-N in the tissues showed no significant differences between treatments with and without nitrogen fertilization. The evaluation of micropropagated seedlings showed no increases in the parameters tested. The results showed that the response of inoculation in temporary immersion bioreactor micropropagation is possible, and that the application of homologous strains may have contributed to a better response by the interaction of endophytic bacteria with sugarcane RB92579. Further studies should be conducted to improve the methodology, which indicates a great potential to optimize this process on a commercial scale.

关键词： Biological Nitrogen Fixation Meristem Culture Diazotrophic Bacteria Endophytes Micropropagation

Breast Milk Micronutrients in Lactating Mothers from Ribeirao Preto(SP),Brazil

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Food and Nutrition Sciences 2014年第13期5卷 1196-1201页

作者： Marco Túlio Soares andrade Luiz Antonio del Ciampo Ieda Regina Lopes del Ciampo Ivan Savioli Ferraz Fernando Barbosa junior department of Puericulture and Pediatrics Faculty of Medicine of Ribeirao PretoUniversity of Sao PauloSao PauloBrazil department of Clinical Toxicological and Bromatological AnalysesFaculty of Pharmaceutical Sciences of Ribeirao PretoUniversity of Sao PauloSao PauloBrazil

Breast milk is the ideal food for infants and should be consumed as the exclusive food for the first six months and then be complemented up to two years of age. The aim of this study is to determine breast milk’s content of macro and micronutrient in lactating mothers from the Ribeir?o Preto (SP) region, in Brazil. A cross-sectional study was conducted with breast milk samples of 70 mothers from the city of Ribeir?o Preto (SP). The samples were analyzed in order to determine iron, copper, zinc, calcium and magnesium concentrations. They were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The study was approved by the Research Ethics Committee of the University Hospital, Faculty of Medicine of Ribeir?o Preto, University of S?o Paulo, and all subjects gave written informed consent to participate. The current study revealed that all 70 lactating mothers were healthy and delivered babies more than 38 weeks gestation;71.4% of them were younger than 30 years and 47.1% were primiparae. The iron, copper, zinc, calcium and magnesium concentrations detected in milk were 2.7 ± 0.4, 0.4 ± 0.02, 3.6 ± 0.2, 142 ± 21.6 and 39.8 ± 4.2 mg/L, respectively. Therefore, it can be concluded that in the present sample, except for calcium, all other mineral concentrations were adequate for the infant’s requirements according to the Dietary Reference Intake (DRI).

关键词： Human Milk Breastfeeding Micronutrients ICP-MS