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Low temperature,IBA concentrations and optimal time for adventitious rooting of Eucalyptus benthamii mini-cuttings

Journal of Forestry Research 2012年第4期23卷 583-592页

作者： Gilvano Ebling Brondani Francisco JoséBenedini Baccarin Heron Wilhelmus de Wit Ondas JoséLuiz Stape antonio natal gonçalves Marcilio de Almeida Department of Forest Engineering Federal University of Mato Grosso(UFMT)Avenida Fernando Corrêa da Costa2367ZC 78060-900CuiabáMato GrossoBrazil. Department of Forest Sciences "Luiz de Queiroz"College of AgricultureUniversity of S o Paulo(ESALQ/USP)Avenida Pádua Dias11POB 9ZC 13418-900PiracicabaSo PauloBrazil. Department of Biological Sciences "Luiz de Queiroz"College of AgricultureUniversity of S o Paulo(ESALQ/USP)Avenida Pádua Dias11POB 9ZC 13418-900PiracicabaSo PauloBrazil. Department of Forest and Environmental Sciences North Carolina State UniversityNC 27695USA.

Eucalyptus benthamii is a forest species of economic interest that has difficulty with seed production and also is considered to have difficulty with adventitious rooting using propagation techniques, such as cutting or mini-cutting. We aimed to assess the adventitious rooting percentage under different storage times in low temperatures and at various IBA （indole-3-butyric acid） concentrations to determine the optimal time of permanence for rooting Eucalyptus benthamii minicuttings in a greenhouse. Shoots collected from mini-stumps cultivated in a semi-hydroponic system were used to obtain the mini-cuttings. For the first experiment, the mini-cuttings were stored at 4℃ for 0 （immediate planting）, 24, 48, 72, 96 and 120 h. The second experiment evaluated the rooting dynamic to determine the optimal time of permanence for minicuttings in a greenhouse. The basal region of the mini-cutting was treated with various IBA solutions： 0 （free of IBA）, 1,000, 2,000, 3,000 and 4,000 mg.L^-1. Every seven days （0 （immediate planting）, 7, 14, 21 and 28 days）, destructive sampling of the mini-cuttings was performed to evaluate the histology of the adventitious rooting. Eucalyptus benthamii minicuttings should be rooted immediately after the collection of the shoots. The 2,000 mg.L^-1 IBA concentration induced a greater speed and percentage of adventitious rooting, and an interval of 35 to 42 days was indicated for permanence of the mini-cuttings in the greenhouse. Expo- sure to low temperature induced adventitious root formation with diffuse vascular connections.

关键词： rhizogenesis plant cloning mini-cutting technique histological analysis indole-3-butyric acid.

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Problem-Solving Training in Character Multidiscipline in PET-Health/natal-RN for Undergraduate Students

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Health 2015年第13期7卷 1775-1781页

作者： Iramara Lima Ribeiro antonio Medeiros Júnior Federal University of Rio Grande do Norte(UFRN) NatalBrazil

The undergraduate training points to teaching methodologies where students act on their learning processes. Underlying this perspective, the under graduation in health of Federal University of Rio Grande do Norte offers the discipline of Saúde e Cidadania (SACI-Health and Citizenship), held in different health centers at natal, state of Rio Grande do Norte, Brazil. The aim of this study is to analyze between 2009 and 2011, the strengths and weaknesses of this experience, according to former students. 25 learning portfolios written by students were analyzed with the aid of Alceste 4.9 software. The results show the value of teamwork to facing the problems and the existence of formative stimuli toward the comprehensive care. Emerging as weaknesses, the difficulties in living together in the labor process are that students miss the low supply of multidisciplinary courses throughout the training. It is concluded that the SACI-Health and Citizenship gives students a different look to the psychic, social, economic and cultural factors that underlie problems and health practices.

关键词： Education Higher Education Interdisciplinary Communication Health

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Sensor Hall Effect on Analyses Mechanical Stress

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Journal of Mechanics Engineering and Automation 2015年第1期5卷 19-25页

作者： Jacques Cousteau da Silva Borges Abel Cavalcante Lima Filho Francisco antonio Belo Physics Laboratory IFRN (Instituto Federal de Educaqao Ciencia e Tecnologia do Rio Grande do Norte) Natal 59015-000 Brazil Solar Energy Laboratory UFPB (Universidade Federal da Paraiba) Joao Pessoa 58051-000 Brazil

Measuring the magnetic field is a common practice in industrial processes. We can cite the voltage measurements through PTs （potential transformers）. This is a classic example of inductive field measuring, predicting to be measured quantity is of oscillatory nature, with the circuit instrumentation scaled and calibrated for a typical frequency of 50/60 Hz. For a long time, only the binary information：＂this field＂ and ＂missing field＂ is needed. For example, only with this information can we identify the frequency of the rotating shaft. Currently, new technologies employ magnetic sensors for measuring positions （distances, angles, etc.） from the intensity of the magnetic field. Inductive sensors are inefficient on measurements of static fields, such as magnets, opening spaces for new linear Hall effect sensors, and static which deal with these situations without difficulty. The present study examines the behavior of the Hall sensor, making the measurement of the intensity of the static magnetic field of the rotating magnet and the same, verifying the effect of the speed at which the magnet passes the sensor in some way alter the measurement. The results are favorable manda and the versatility of these sensors in many different applications.

关键词： Dynamic measurement Hall effect instrumentation sensors and actuators in robotics

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Thermal Shock of Al2O3-SiC Ceramic Material Obtained by Replication Method

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材料科学与工程（中英文版） 2010年第4期4卷 66-70页

作者： Wilson Acchar Wagner Lopes Torquato antonio Carlos Costa Femando Barcelos Souza Eduardo Galvao Ramalho Pos-graduation Program of Science and Materials Engineering-UFRN NataI-RN CEP：59072-970 Brazil Pos-graduation Program of Mechanical Engineering-UFRN Natal-RN CEP： 59072-970 Brazil

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Areas with evidence of equity and their progress on mortality from tuberculosis in an endemic municipality of southeast Brazil

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Infectious Diseases of Poverty 2017年第1期6卷 1185-1195页

作者： Mellina YAMAMURA Marcelino SANTOS NETO Francisco CHIARAVALLOTI NETO Luiz Henrique ARROYO antonio Carlos Vieira RAMOS Ana Angelica Rego de QUEIROZ Aylana de Souza BELCHIOR Danielle Talita dos SANTOS Juliane de Almeida CRISPIM Ione Carvalho PINTO Severina Alice da Costa UCHOA Regina Celia FIORATI Ricardo Alexandre ARCENCIO School of Nursing of the University of Sao Paulo Ribeirao Preto Campus(EERP/USP)Ribeirao retoSPBrazil Federal University of Maranhao(UFMA) Sao LuísMABrazil School of Public Health of the University of Sao Paulo(FSP/USP) Sao PauloSPBrazil Federal University of Rio Grande do Norte(UFRN) NatalRNBrazil School of Medicine of the University of Sao Paulo Ribeirao Preto Campus(FMRP/USP)Ribeirao PretoSPBrazil

Background:In Brazil,people still fall ill and die from tuberculosis(TB),and this can be explained by the significant impasse in the equity of distribution of therapeutic resources to the population as a *** aim was to identify geographical areas which have shown progress in terms of equity(of income,schooling and urban occupancy)and test its effect on mortality from TB in a municipality of southeast ***:It is an ecological study considering TB as the basic cause for deaths registered between 2006 and 2013 on the Mortality Information System and other variables obtained through the Demographic Census of the Brazilian Institute of Geography and Statistics(2010).The geographical area for analysis comprised the areas of coverage of the health *** indicators have been constructed through the Principal Component Analysis(PCA).The cases were geocoded and the annual mortality rate from TB was calculated with smoothing using the local empirical Bayesian *** linear regression was then *** was confirmation of the existence of spatial dependence of residue through the application of the Global Moran I test,and application of the Models with Global Spatial Effects,to identify the best standard of spatial ***:The mortality rates ranged from 0.00 to 2.8 deaths per 100,000 people,per *** the PCA,three indicators were constructed,and designated as indicators of income,social inequality,and social *** multiple linear regression,the indicator of social equity was statistically significant(P<0.0001)but had a negative association,an adjusted R^(2)of 28.36%and with spatial dependence(Moran I=0.21,P=0.003455).The best model to deal with existing spatial dependence was the Spatial Lag ***:The better social conditions have shown progress in reducing mortality from TB,thereby reinforcing the achievement of Sustainable Development *** addition,cartography was also applied,which can be replicated

关键词： Tuberculosis Spatial analysis Mortality Cause of death

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Analysis of the Deformation of Composite Materials of Scrapes of Tire and Latex with Temperature Variation

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Journal of Chemistry and Chemical Engineering 2012年第1期6卷 39-47页

作者： Elmo Thiago Lins Coeuras Ford Rubens Maribondo do Nascimento Jose Ubiragi de Lima Mendes antonio Torres Marques Celeste Margarida Correia Pereira Technological Center Campus Universitfrio Federal University of Rio Grande do Norte Lagoa Nova-Natal-RN 59072-790Brazil Faculty of Engineering University of Porto Porto 4200-465 Portugal Institute of Mechanical Engineering and Industrial Administration University of Porto Porto 4200-465 Portugal

The great major applications of thermal isolation are in the strip of drops and averages temperatures （up to 180 ℃）, which is used from aggressive materials to the nature, such as glass wool, rock wool, polystyrene, EPS among others. In spite of the effectiveness in the retention of the flow of heat, such materials possess considerable cost and they are discarded for long years to be decomposed. In that context, to adapt to the world politics about the preservation of the environment, a study began with intention of developing a material composite with thermal properties, originating from insulating industrial residues. In this research, the behavior of this composite was analyzed, when it submitted traction efforts. For this, a term-mechanic was used （DMA）, where the composite was differentiated under variation temperatures. It was also certain that the gradient temperature of the composite was the source of heat, the conductivity and thermal diffusion. Consequently, the function of the answers of the system was possible to be observed with the deformation of the composite with the tension and temperature variation, as well as the temperature gradient for each proportion of the composite.

关键词： Composite latex deformation.

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NiO-CGO Composite for SOFC Anode： Synthesis and Characterization

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材料科学与工程（中英文版） 2010年第5期4卷 33-39页

作者： Beatriz Cela Daniel Araujo de Macedol Graziele Lopes de Souza Auristela Carla de Miranda antonio Eduardo Martine Rubens Maribondo do Nascimento Carlos Alberto Paskocimas PPGCEM CCET Federal University of Rio Grande do Norte 1524 - 59072-970 Natal RN Brazil Chemical Engineering Department CT Federal University of Rio Grande do Norte Natal 1524 - 59072-970 RN Brazil

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Effect of Microwave Power on the Zn2SnO4 Synthesis and Its Use for Photodegradation of Phenol

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Journal of Chemistry and Chemical Engineering 2014年第8期8卷 794-799页

作者： Edson Luiz Foletto Marcio antonio Mazutti Adriano Cancelier Erico Marion de Moraes Flores Edson Irineu Muller Leticia Severo Fagundes Pereira Osvaldo Chiavone-Filho Andre Gundel Department of Chemical Engineering Federal University of Santa Maria Santa Maria 97105-900 Brazil Department of Chemistry. Federal University of Santa Maria Santa Maria 97105-900 Brazil Department of Chemical Engineering Federal University of Rio Grande do Norte Natal 59066-800 Brazil Department of Physics Federal University of Pampa Bage 96413-170 Brazil

Spinel structure Zn2SnO4 was successfully synthesized by microwave-assisted hydrothermal process. The effects of the microwave power on the formation and physical properties of the Zn2SnO4 particles are discussed. The products were characterized by X-ray diffraction, atomic force microscopy, infrared spectroscopy, and N2 adsorption. The results indicated that the microwave power had important influence on the formation of the spinel phase. The results also revealed that the physical properties of Zn2SnO4 particles did not change with the increase of the microwave power above 600 W, with 20 min of reaction time. Furthermore, the photocatalytic activity of the Zn2SnO4 particles for the phenol degradation under sunlight was also investigated.

关键词： Zn2SnO4 zinc stannate synthesis microwave porous material photocatalysis.

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Painful Symptomatology Reported by Dentistry Students at a Brazilian University

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Health 2015年第8期7卷 976-985页

作者： Cristiane Assuncao da Costa Cunha Iris do Ceu Clara Costa Angelo Giuseppe Roncalli Dyego Leandro Bezerra de Souza Fábia Barbosa de Andrade antonio Medeiros Júnior Department of Dentistry Federal University of Rio Grande do Norte(UFRN)NatalBrazil Department of Collective Health Federal University of Rio Grande do Norte(UFRN)NatalBrazil Department of Nursing Faculty of Health Sciences of Trairi(FACISA)Federal University of Rio Grande do Norte(UFRN)Santa CruzBrazil

Objectives: Identification of the level of knowledge on ergonomics principles, and application of these by dentistry students to investigate whether painful symptomatology was experienced. An-other objective is the expansion of discussions on occupational health in academic settings. Study Design and Settings: Dentistry students of the Federal University of Rio Grande do Norte, Brazil (n = 148) were surveyed using the Nordic Musculoskeletal Questionnaire to determine the severity of musculoskeletal symptoms experienced. Data were analyzed through EpiInfo 7.0 to measure central trends and variability 5for quantitative variables, absolute and relative frequencies for categorical variables, and significance between groups (confidence intervals and chisquare). Association analysis (Pearson) was also carried out. Results: Ergonomic measures were not reported by students. Within the musculoskeletal symptoms described, females were the most affected, independent of academic level. Conclusions: Positive correlations were verified between all categories and all anatomic regions (e.g., neck, lower back, wrists, hands, and shoulders). Data suggest progressive worsening of symptoms, which will eventually result in leaves of absence.

关键词： Musculoskeletal Disorders Ergonomics Health Promotion Occupational Health Health Education

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Use of Silicon in Mitigating Ammonium Toxicity in Maize Plants

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American Journal of Plant Sciences 2015年第11期6卷 1780-1784页

作者： Cid Naudi Silva Campos Renato de Mello Prado Cassiano Garcia Roque antonio Joao de Lima Neto Luiz Junior Pereira Marques Aridênia Peixoto Chaves Claudia Amaral Cruz Department of Soils and Fertilizers Universidade Estadual Paulista/FCAV Jaboticabal Brazil Department of Soils and Fertilizers Universidade Estadual Paulista/FCAV Jaboticabal Brazil Universidade Federal de Mato Grosso do Sul Chapad&atildeo do Sul Brazil Universidade Federal de Viçosa Vi&ccedilosa Brazil Department of Applied Biology and Agriculture Universidade Estadual Paulista/FCAV Jaboticabal Brazil Department of Plant Science Universidade Federal Rural do Semi-árido Mossoró Brazil M.Sc. in Agronomy Natal Brazil

Silicon is a beneficial element that can mitigate abiotic stresses, such as ammonium toxicity. The objective herein was to evaluate the effects of silicon (Si) on mitigating toxicity caused by excess ammonium in maize plants grown in nutrient solution. An experiment was conducted with maize plants (cultivar DKB 390 VT Pro II) grown in a greenhouse in pots (8 L) in a hydroponic system. The treatments were arranged in a 2 × 2 factorial, consisting of two ammonium concentrations (30 and 60 mmol·L-1) in the absence and presence of Si (10 mmol·L-1), arranged in a completely randomized design with six repetitions. At 28 days after applying the treatments the dry mass of shoots and roots was evaluated, along with accumulation of silicon and nitrogen in the shoots. The use of silicon resulted in increases in the studied variables, regardless of ammonium concentrations. Silicon reduced the effect of toxicity caused by ammonium excess in maize plants, resulting in greater growth and dry matter accumulation.

关键词： Zea mays L. Beneficial Element Nitrogen Nutritional Disorder Abiotic Stress

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