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Auger Effect Revisited: An Essay by Inelastic Collision Theory

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Natural Science 2018年第2期10卷 59-62页

作者： alexandre M. dias Universidade José do Rosário Vellano Alfenas Brazil

This work presents an essay to the Auger Effect, by the Inelastic Collision Theory. Calculations of the energies of the electrons ejected for bands of the Auger spectrum of some molecules were made, to test of the model.

关键词： Auger Effect Collision Theory

Melatonin prevents oxidative stress,inflammatory activity,and DNA damage in cirrhotic rats

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World Journal of Gastroenterology 2022年第3期28卷 348-364页

作者： Josieli R Colares Renata M Hartmann Elizângela G Schemitt Sandielly R B Fonseca Marilda S Brasil Jaqueline N Picada alexandre S dias Aline F Bueno Cláudio A Marroni Norma P Marroni Medical Sciences Program Universidade Federal do Rio Grande do SulPorto Alegre 90050-170Brazil Marilda S BrasilNorma Biological Sciences Program Universidade Federal do Rio Grande do SulPorto Alegre 90050-170Brazil Cellular and Molecular Biology Program Lutheran University of Brazil(ULBRA)Canoas 92425-900Brazil Pneumological Sciences Program Universidade Federal do Rio Grande do SulPorto Alegre 90050-170Brazil Posgraduate Program in Hepatology Universidade Federal de Ciências da Saúde de Porto AlegrePorto Alegre 90050-170Brazil

BACKGROUND Cirrhosis is an important health problem characterized by a significant change in liver *** animals,this can be reproduced by an experimental model of bile duct ligation(BDL).Melatonin(MLT)is a physiological hormone synthesized from serotonin that has been studied for its beneficial properties,including its antioxidant *** To evaluate MLT’s effects on oxidative stress,the inflammatory process,and DNA damage in an experimental model of secondary biliary *** Male Wistar rats were divided into 4 groups:Control(CO),CO+MLT,BDL,and BDL+*** was administered(20 mg/kg)daily beginning on day 15 after biliary *** day 29 the animals were *** samples,liver tissue,and bone marrow were collected for further *** BDL caused changes in biochemical and histological parameters and markers of inflammatory *** acid(0.46±0.01)reactive substance levels,superoxide dismutase activity(2.30±0.07)and nitric oxide levels(2.48±0.36)were significantly lower(P<0.001)n the groups that received *** damage was also lower(P<0.001)in MLT-treated groups(171.6±32.9)than the BDL-only group(295.5±34.8).Tissue damage and the expression of nuclear factor kappa B,interleukin-1β,Nrf2,NQO1 and Hsp70 were significantly lower in animals treated with MLT(P<0.001).CONCLUSION When administered to rats with BDL-induced secondary biliary cirrhosis,MLT effectively restored the evaluated parameters.

关键词： Antioxidants Secondary biliary cirrhosis Oxidative stress Melatonin Bile duct ligation

Embryonal rhabdomyosarcoma in the maxillary sinus with orbital involvement in a pediatric patient:Case report

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World Journal of Clinical Cases 2017年第12期5卷 440-445页

作者： Ana Carolina Rodrigues de Melo Tácio Candeia Lyra Isabella Lima Arrais Ribeiro alexandre Rolim da Paz Paulo Rogério Ferreti Bonan Ricardo dias de Castro Ana Maria Gondim Valen?a Department of Clinical and Social Dentistry Federal University of Paraíba Department of Pathology Hospital Napole?o Laureano Department of Restorative Dentistry Federal University of Paraíba

This report presents a case of embryonal rhabdomyosarcoma(e RMS) located in the left maxillary sinus and invading the orbital cavity in a ten-year-old male patient who was treated at a referral *** images provided from the computed tomography showed a heterogeneous mass with soft-tissue density,occupying part of the left half of the face inside the maxillary sinus,and infiltrating and destroying the bone structure of the maxillary sinus,left orbit,ethmoidal cells,nasal cavity,and sphenoid *** analysis of the histological sections revealed an undifferentiated malignant neoplasm infiltrating the skeletal muscle *** immunohistochemical analysis was positive for the antigens:MyoD 1,myogenin,desmin,and Ki67(100% positivity in neoplastic cells),allowing the identification of the tumour as an eR *** treatment protocol included initial chemotherapy followed by radiotherapy and finally *** total time of the treatment was nine months,and in 18-mo of follow-up period did not show no local recurrences and a lack of visual impairment.

关键词： Oncology Embryonal rhabdomyosarcoma Pediatrics Maxillary sinus Chemotherapy

Clinical hematological and biochemical parameters in Swiss,BALB/c,C57BL/6 and B6D2F1 Mus musculus

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Animal Models and Experimental Medicine 2020年第4期3卷 304-315页

作者： Giorgio Silva-Santana Juliet Cunha Bax Débora Cristina Silva Fernandes Daniela Tendler Leibel Bacellar Cleber Hooper alexandre Alves Souza Oliveira dias Cristina Barbosa Silva Aline Moreira de Souza Simone Ramos Ricardo alexandre Santos Thainara Ramos Pinto Mariana Antunes Ramão Ana Luíza Mattos-Guaraldi Health Sciences Center Institute of Microbiology Paulo de GóesFederal University of Rio de JaneiroRio de JaneiroRJBrazil Laboratory of Diphtheria and Corynebacteria of Clinical Relevance Faculty of Medical SciencesUniversity of the State of Rio de JaneiroRio de JaneiroRJBrazil The Collaborating Centre for Reference and Research on Diphtheria/National Health Foundation/Ministry of Health Rio de JaneiroRJBrazil Laboratory of Clinical Research and Molecular Diagnostic Prof.Marcílio dias do Nascimento Department of Clinical Practice and PathologyFluminense Federal UniversityNiteróiRJBrazil Laboratory Bacterial Vaccines Department of ImmunologyNational Institute for Quality Control in HealthOswaldo Cruz FoundationRio de JaneiroRJBrazil Institute of Science and Technology in Biomodels Oswaldo Cruz FoundationRio de JaneiroRJBrazil Institute of Biology Federal Fluminense UniversityNiteróiRJBrazil Biomedical Center College of Medical SciencesUniversity of the State of Rio de JaneiroRio de JaneiroRJBrazil

Background:Animal models are widely used in scientific research in order to obtain information from a whole organism under a specific set of experimental *** lineages of mice have been used to investigate diseases and new therapeutic strategies,and,consequently,hematological and biochemical tests in these laboratory animals are essential to validate scientific *** study seeks to establish reference values for hematological and biochemical parameters of four lineages of ***:We evaluated the hematological and biochemical profiles of 20 males and 20 females from the lineages Swiss(heterogeneous),BALB/c and C57BL/6(isogenic),and B6D2F1(hybrid),totaling 160 *** were standardized using the systems pocH-100iV Diff™for 19 hematological parameters and VITROS®350 for 12 biochemical ***:Results are shown as means and standard deviation,grouped by lineage and *** the values obtained in this study with the values from previous studies,some variations were detected,which could be explained by differences in methodologies or individual ***:Thus our study shows that knowledge and disclosure of the values of physiological parameters of laboratory animals is necessary,and emphasises the importance of considering variations influenced by gender,lineage and genotype in the choice of the best experimental model.

关键词： B6D2F1 BALB/c biochemical C57BL/6 hematological Swiss

Carbonates and organic matter in soils characterized by reflected energy from 350-25000 nm wavelength

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Journal of Mountain Science 2020年第7期17卷 1636-1651页

作者： Najmeh ASGARI Shamsollah AYOUBI Jose alexandre Melo DEMATTê AndréCarnieletto DOTTO Department of Soil Science College of AgricultureIsfahan University of Technology841156-83111IsfahanIran Department of Soil Science College of Agriculture Luiz de QueirózAv.Pádua Dias11CEP 13418-900PiracicabaSão PauloBrazil

The soil carbon pool which is the sum of soil organic carbon(SOC)and soil inorganic carbon(SIC)is the second largest active store of carbon after the oceans and it is an important component of the global carbon ***,accurate estimation of SOC and SIC as important carbon reservoirs in terrestrial ecosystems using fast,inexpensive and non-destructive methods is crucial for planning different climate change *** aim of the current research was to examine the effectiveness of Vis-NIR(visible and near-infrared spectroscopy:350-2500 nm)and MIR(mid-infrared spectroscopy:4000-400 cm-1)to characterize and estimate soil organic matter(SOM)and carbonates as main components of soil carbon stocks in Juneqan,Charmahal va Bakhtiari,*** do so,a total of 548 soil samples from this area were collected(October 2015)and analyzed in laboratory(August 2017).In order to develop models capable of predicting SOM and carbonates content,seven spectral preprocessing methods comprising Absorbance(Abs),De-trending(Det),Continuum removal(CR),Savitzky-Golay derivatives(SGD),standard normal variate transformation(SNV),multiplicative scatter correction(MSC)and Normalization by range(NBR)were conducted along with five multivariate methods including Random Forest(RF),Partial Least-Squares Regression(PLSR),Artificial Neural Network(ANN),Support Vector Machine(SVM)and Gaussian Process Regression(GPR).The content of carbonates caused spectral reflectance intensity to augment on several ranges of spectrum and strong absorption feature at 2338 nm in the Vis-NIR and 714,850,870,1796,2150 and 2510 cm-1 in the MIR spectra *** absorbed energy in several ranges,but also showed specific peaks in *** facts are associated with the structure of carbonates and SOM and its interaction with *** best combination of preprocessing and calibration models for carbonates quantification in Vis-NIR spectra was Det/PLSR(R2=0.74,RPD=2.19,RMSE=6.45).For SOM,it was Det/PLSR(R2=0.82,RPD=2.41,RM

关键词： Modeling Reflectance spectroscopy Soil analysis Preprocessing

领导风格对组织气氛的影响 ——选择佛得角的微型和小型企业

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领导风格对组织气氛的影响 ——选择佛...

作者：亚历山大（alexandre dias）天津大学

学位级别：硕士

本研究探讨了领导作风对在佛得角中小企业工作的组织氛围的影响。为此,通过问卷调查的方式从75家公司收集了原始数据。文献将领导作风分为变革型,交易型和放任型三种。类型,采用多样的领导能力调查表对这三种类型的领导作风进行研究。... 详细信息

本研究探讨了领导作风对在佛得角中小企业工作的组织氛围的影响。为此,通过问卷调查的方式从75家公司收集了原始数据。文献将领导作风分为变革型,交易型和放任型三种。类型,采用多样的领导能力调查表对这三种类型的领导作风进行研究。然而组织氛围采用组织氛围问卷其中包括来自管理层和组织的支持,奖励,身体舒适,控制/压力和同事之间的凝聚力等问题。通过KMO和Bartlett的球状试验检验了数据采集仪的有效性,这些试验的结果表明了采样测试的充分性。Cronbach的alpha检验更进一步地检测了数据的可靠性,检测结果显示了所有变量（变革型,交易型,自由放任型,来自管理层和组织的支持,奖励,身体舒适度,控制/压力和同事之间的凝聚力）数据的可靠性。此外,通过调查对象收集转化的数据,通过关联分析和复原分析确定了因变量和自变量之间的关系。关联分析结果表明,变革型领导对员工的日常经营支持和员工作为管理层和组织支持的绩效与变革型领导存在显著相关,相关系数为正,且值位于强相关范围内。然而,自由放任型领导与管理层和组织的支持关系较弱,表明其在日常经营中队员工的支持较低。所有三种领导作风均与报酬,身体舒适,同事间凝聚力呈正比,然而,控制/压力与变革型和交易型领导作风呈正比,但是与放任型领导作风呈反比。此外,所有三种领导作风都和组织氛围呈正比,无论如何变革领导与组织氛围之间的相关性是最强的,复原结果也证实了变革型和交易型领导对组织氛围的积极性有着显著影响。本研究发现,变革型领导是佛得角中小企业最重要的领导作风。

关键词：变革型领导交易领导自由放任组织气氛小型和小型公

Correlation between Solar Semi-Diameter and Geomagnetic Time Series

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International Journal of Geosciences 2012年第2期3卷 321-328页

作者： Eugênio Reis Neto Vitor Hugo Alves dias Andrés Reinaldo Rodriguez Papa alexandre Humberto Andrei Jucira Lousada Penna Irineu Figueiredo Sérgio Calderari Boscardin Victor de Amorin d’ávila Observatório Nacional Rio de Janeiro Brazil

We study the correlation between geomagnetic and solar semi-diameter measurements made at two of our ground stations (Vassouras and Rio de Janeiro, Brazil). The study comprises the period from March 1998 to November 2003, for which daily means were compared. Both series describe correlated, but different, phenomena and, consequently, before a correlation study, an individual analysis of each data set was necessary. One of the motivations of the present work was to further explore the correlation with lags found between the solar semi-diameter and some solar activity estimators, which supports the probabilistic forecasting of the solar activity and hence, of the solar driven geomagnetic variations.

关键词： Solar Diameter Geomagnetic Series Correlation Time Series

Allelopathy of the Leaf Extract of Eucalyptus Genetic Material on the Physiological Performance of Millet Seeds

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American Journal of Plant Sciences 2018年第1期9卷 34-45页

作者： Marcos Vinicius de Sousa Séfora Gil Gomes de Farias Déborah Praciano de Castro Romário Bezerra e Silva Dandara Yasmim Bonfim de Oliveira Silva Bruna Anair Souto dias alexandre Faria da Silva Graziele Nunes Lopes dos Santos Daniele Cristina Pereira de Matos Caio Varonill de Almada Oliveira Universidade Federal do Piauí (UFPI) Bom Jesus Brazil Universidade Estadual do Ceará UECE Fortaleza Brazil Universidade Federal de Vicosa Vicosa Brazil

This study aims to evaluate the possible allelopathic effects of young and mature leaf extract from of two eucalyptus genetic materials on the physiological performance of millet seeds. The experiment was carried out in a completely randomized design, in a 5 × 2 × 2 factorial arrangement [five concentrations of the extract (0, 25%, 50%, 75%, and 100%) × two genetic materials (1 - Eucalyptus grandis × Eucalyptus urophylla and 2 - Eucalyptus grandis × Eucalyptus camaldulensis) × two maturation stages of leaves (young and mature leaves)] with four replicates, each one with 25 seeds. Seeding was performed on the germitest paper substrate distributed in Petri dishes, moistened with the extract according to the treatments, being allocated in biochemical oxygen demand (B.O.D) adjusted at 25°C and 12 h photoperiod. Percentage, speed index, mean germination time, aerial part and primary root length, and dry matter weight of aerial part and root system of seedlings were evaluated. The leaf extracts of the two eucalyptus clones had all the analyzed variables changed with effect more evident on young leaf extract of the genetic material 1. It can be concluded that the tested genetic materials have a detrimental effect on the physiological performance of millet seeds.

关键词： Allelopathic Germination Pennisetum glaucum Seedlings Germination Speed

Habitat specialization and phylogenetic structure of tree species in a coastal Brazilian white-sand forest

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Journal of Plant Ecology 2014年第2期7卷 134-144页

作者： alexandre A.de Oliveira Alberto Vicentini Jerome Chave Camila de T.Castanho Stuart J.Davies Adriana M.Z.Martini Renato A.F.Lima Ricardo R.Ribeiro Amaia Iribar Vinicius C.Souza Instituto de Biociências Universidade de São PauloRua do Matão321Travessa 14São PauloSP 0550890Brazil Instituto Nacional de Pesquisas da Amazônia Av.AndréAraújo2936CP 478.ManausAM 69060001Brazil Evolution et DiversitéBiologique Bâtiment 4R1 UniversitéPaul Sabatier118 route de Narbonne31062 ToulouseFrance Smithsonian Tropical Research Institute PO Box 37012WashingtonDC 20013-7012USA ESALQ Universidade de São Paulo.Avenida Pádua Dias11PiracicabaSP 13418900Brazil

Aims The coastal Brazilian rainforest on white-sand(restinga)ranks among the most fragmented forest types in the tropics,owing to both the patchy distribution of sandy soils and widespread coastal development *** we study the environmental and evolutionary determinants of a forest tree assemblage at a single restinga forest in Southeastern *** also explore the ability of competing hypotheses to explain the maintenance of species diversity in this forest type,which includes contrasting extremes of edaphic conditions associated with flooding *** The study was conducted in a white-sand forest permanent plot of 10.24 ha on the coastal plain of Southeastern *** plot was divided into 256 quadrats of 20×20 m,which were classified into two main edaphic habitats(flooded and drained).Trees with a diameter≥1 cm at breast height were *** assembled DNA sequence data for each of the 116 morphospecies recognized using two chloroplast markers(rbcL and matK).A phylogenetic tree was obtained using the maximum likelihood method,and a phylogenetic distance matrix was produced from an ultrametric *** analyzed similarity in floristic composition and structure between habitats and related them to cross-plot distances using permutation *** model torus shift simulations were performed to obtain a statistical significance level for habitat association for each *** phylogenetic structure for the two habitats and for each 20×20 m quadrat was calculated using the mean phylogenetic distance weighted by species abundance and checked for significance using the standardized effect size generated by 5000 randomizations of phylogenetic tip *** Findings Our results indicate that partitioning among edaphic habitats is important for explaining species distributions and coexistence in restinga *** distributions within the plot were found to be non-random:there was greater floristic similarity within than betwe

关键词： habitat association torus-translation test phylogenetic community structure niche partitioning edaphic condition