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Worker laying in leafcutter ant Acromyrmex subterraneus brunneus （formicidae, Attini）

Insect Science 2007年第2期14卷 157-163页

作者： ROBERTO S. camargo LUIZ C. fORTI JULIANE f. S. LOPES NEWTON C. NORONHA ANGELO L. T. OTTATI Departamento de Producāo Vegetal FCA/UNESP Botucatu SP Campus Universitário Paulo VI Sāo Luis MA Brazil. Comportamento e Biologia Animal Instituto de Ciencias Biológicas Universidade Federal de Juiz de Fora Campus Universitário Martelos Juiz de Fora MG Campus Universitário Paulo VI Sāo Luis MA Brazil. Departamento de Entomologia Fitopatologia e Zoologia Agricola Escola Superior de Agricultura 'Luiz de Queiroz' Universidade de Sao Paulo Piracicaba SP Campus Universitário Paulo VI Sāo Luis MA Brazil. Departamento de fitotecnia e fitossanidade Universidade Estadual do Maranhāo Centro de Ciencias Agrenias Campus Universitário Paulo VI Sāo Luis MA Brazil.

We studied the process of offspring production in queenless colonies of Acromyrmex subterraneus brunneus, and particularly evaluated the ovary development of workers as a function of their age. for this, subcolonies were set up and evaluated at different periods of isolation from the queen （2, 4 and 6 months）, besides individually labeled age groups. The subcolonies were assessed according to offspring production and ovaries containing oocytes or not. The evaluations showed worker oviposition and development of males originating from worker-laid eggs. At 2 months＇ absence of the queen, eggs and larvae were found, with eggs in a higher proportion than larvae. After 4 months, the proportion of eggs had reduced while larvae had increased, and a pupa was found in one subcolony. At 6 months, besides a higher share of larvae, one pupa and one adult male were found. Dissection of workers revealed ovaries containing oocytes during the periods of evaluation. Only a group of medium-sized and large workers, 23.3%, 20.9% and 37.5% of the population from each period assessed in queenless subcolonies respectively, presented developed oocytes in the ovary. The same was observed in colonies with a queen, with 17.6%, 19.6% and 7.8% of the group of dissected workers from each time period, respectively. With respect to worker age, we observed by dissection of the ovary, that the greatest percentage of individuals with ovarioles containing oocytes occurred at 45 days （6 weeks） up to 90 days （12 weeks）. These results probably are associated with the workers reproduction and the laying of trophic and reproductive eggs in colonies with and without a queen; these eggs have distinct functions in each situation.

关键词： leafcutter ant queenless ant colonies reproduction conflict worker laying,worker reproduction

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Environmental factors Affecting Chromium-Manganese Oxidation-Reduction Reactions in Soil

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Pedosphere 2011年第1期21卷 84-89页

作者： D.O.P.TREBIEN L.BORTOLON M.J.TEDESCO C.A.BISSANI f.A.O.camargo Department of Agricultural Engineering Federal University of Santa Catarina Department of Soil Science Federal University of Rio Grande do Sul

Disposal of chromium(Cr) hexavalent form,Cr(VI),in soils as additions in organic fertilizers,liming materials or plant nutrient sources can be dangerous since Cr(VI) can be highly toxic to plants,animals,and *** order to explore soil conditions that lead to Cr(VI) generation,this study were performed using a Paleudult(Dystic Nitosol) from a region that has a high concentration of tannery operations in the Rio Grande do Sul State,southern *** laboratory incubation experiments were carried out to examine the influences of soil moisture content and concentration of cobalt and organic matter additions on soil Cr(VI) formation and release and manganese(Mn) oxide reduction with a salt of chromium chloride(CrCl 3) and tannery sludge as inorganic and organic sources of Cr(III),*** amount of Cr(III) oxidation depended on the concentration of easily reducible Mn oxides and the oxidation was more intense at the soil water contents in which Mn(III/IV) oxides were more *** organic compounds in soil decreased Cr(VI) formation due to Cr(III) *** mechanism also resulted in the decrease in the oxidation of Cr(III) due to the tannery sludge ***(III) oxidation to Cr(VI) at the solid/solution interface involved the following mechanisms:the formation of a precursor complex on manganese(Mn) oxide surfaces,followed by electron transfer from Cr(III) to Mn(III or IV),the formation of a successor complex with Mn(II) and Cr(VI),and the breakdown of the successor complex and release of Mn(II) and Cr(VI) into the soil solution.

关键词：氧化还原反应锰氧化物土壤条件六价铬环境因素 CrCl3 土壤水分含量实验室培养

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Influence of the sintering temperature on ferroelectric properties of potassium-sodium niobate piezoelectric ceramics

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Journal of Advanced Dielectrics 2021年第3期11卷 8-15页

作者： J.A.Cortés J.camargo M.f.Rachia f.Rubio-Marcos L.Ramajo M.Castro M.A.Ramírez Sao Paulo State University—UNESP faculty of Engineering of Guaratingueta.Av.Dr.Ariberto Pereira da Cunha 333 Portal das Colinas 12516-410GuaratinguetaSPBrazil Research Institute for Materials Science and Technology INTEMA Av.Colon 10850B7608FDQ Mar del PlataArgentina Electroceramics Department Instituto de Cerámica y Vidrio CSICKelsen 528049MadridSpain Escuela Politécnica Superior.Universidad Antonio de Nebrija Pirineos 55 28040MadridSpain

The effect of sintering condition on structure,microstructure,and ferroelectric properties of(K_(0.44)Na_(0.52)Li_(0.04))(Nb_(0.86)Ta_(0.10)Sb_(0.04))-O_(3)(KNL-NTS)has been *** powders have been synthesized by the solid-state reaction method and sintered at different temperatures(1115℃,1125℃,and 1140℃).Then,samples were characterized by thermogravimetric analysis,X-ray diffraction,scanning electron microscopy,and impedance *** XRD results,the perovskite structure and small peaks corresponding to a secondary phase were *** processed at the highest temperatures showed higher densities and good piezoelectric properties(d_(33),K_(p),and K_(t)),particularly specimens sintered at 1125℃ presented the highest piezoelectric performance.

关键词： KNL-NTS lead-free ferroelectric properties

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语言教学中的情绪:巴西教师情绪研究述评（英文）

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Chinese Journal of Applied Linguistics 2018年第4期41卷 506-531,552页

作者： Ana Maria f.BARCELOS Rodrigo camargo ARAGAO (巴西)维索萨联邦大学 (巴西)圣克鲁斯州立大学

本文中,我们希望对增进理解教师信念的呼声(Kubanyiova&feryok, 2015)作出回应并探讨对巴西在职和职前英语教师的情绪行为所进行的研究中的发现。具体来说,我们关注于:1)这些教师所报告的情绪的种类,以及2)信念和情绪之间的关系。研究... 详细信息

本文中,我们希望对增进理解教师信念的呼声(Kubanyiova&feryok, 2015)作出回应并探讨对巴西在职和职前英语教师的情绪行为所进行的研究中的发现。具体来说,我们关注于:1)这些教师所报告的情绪的种类,以及2)信念和情绪之间的关系。研究结果显示:1)教师在其教师教育中所经历的情绪的多样性;以及2)这些情绪如何以动态和复杂的方式与他们对巴西英语教学的信念相互作用。研究结果表明,探究情绪与信念之间的相互关系有助于我们了解教师在他们各自情境中的思考与实践。研究综述中也将探讨进一步研究的意义和问题。

关键词：情绪信念语言教师教育巴西

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Non-Canonical functions of the E2f/DP Pathway with Emphasis in Plants

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 307-330页

作者： Víctor A.Sánchez-camargo Samantha Romero-Rodríguez Jorge M.Vázquez-Ramos facultad de Química Departamento de BioquímicaUniversidad Nacional Autónoma de MéxicoAvenida Universidad y CopilcoCiudad de México04510México Plant Development and(Epi)Genetics Group Swammerdam Institute for Life SciencesUniversiteit van AmsterdamAmsterdam1098XHNetherlands

The E2f/DP pathway is a widely conserved regulatory mechanism in pluricellular *** family of E2f and DP transcription factors was originally described having a role in the transition from the G1 to the S phase of the cell ***,the discovery of hundreds of possible gene targets and their involvement in many other biochemical processes,soon showed that they participated in cell development and differentiation,chromatin remodeling,DNA repair and *** E2f/DP transcription factors can act as either activators or repressors of transcription depending on their association to other regulatory proteins,particularly the retinoblastoma protein,or even depending to their protein structure that can define their *** plants the E2f/DP pathway also regulates endoreduplication,a process present along the life cycle,from organ elongation to root differentiation and *** transcription factors also help plant cells to respond to environmental disturbances such as those caused by different types of radiation,or by *** review focuses on the“so called”non-canonical functions of the E2f/DP family proteins in animal and plant cells,that are in fact essential activities that connect regulatory circuits among multiple metabolic pathways by means of their atypical functions.

关键词： E2f DP transcription factors atypical functions plant cells

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In Vivo Evaluation of Titanium Implants Bioactivated by a Modified Kokubo’s Treatment

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Journal of Biosciences and Medicines 2014年第2期2卷 22-29页

作者： Jailson de Jesus Enori Gemelli fábio Nery Nelson H. A. camargo Materials Science and Engineering Department of Mechanical Engineering University of Santa Catarina State Campus Universitário Joinville Brazil

In this study a modified Kokubo’s treatment (MKT) was used to bioactivate titanium implants. Titanium surfaces were alumina-blasted and etched in HCl/H2SO4 solution followed by treatment in autoclave at 120°C for 1, 3, 5 hour periods with chemical solutions containing 1, 2 and 3 M of NaOH. The materials were characterized by surface angle measurements, roughness, field emission scanning electron microscopy (fE-SEM), X-ray photoelectron spectroscopy (XPS), and in vivo tests. Statistical analysis by polynomial regression showed that solutions within 2.2 and 2.8 M NaOH lead to surface contact angles close to zero degree after 1 h of treatment. XPS analysis carried out on a sample treated 1 h in 2.2 M NaOH indicated the presence of a titanate film. This solution was selected to treat titanium implants for in vivo tests. These tests were performed on sheep in three types of separating surfaces: machined group (standard), SLA group (A) and MKT group (B) divided into two time intervals of 3 and 6 weeks. The samples in group B displayed better results compared to group A only after 6 weeks in terms of counter torque and bone implant contact (BIC).

关键词： Titanium Thermochemical Treatment Wettability In Vivo Test

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Metabolomics in chronic hepatitis C:Decoding fibrosis grading and underlying pathways

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World Journal of Hepatology 2023年第11期15卷 1237-1249页

作者： Adriana camargo ferrasi Samara Vitória Granja Lima Aline faria Galvani Jeany Delafiori flavia Luísa Dias-Audibert Rodrigo Ramos Catharino Giovanni faria Silva Roberta Rodrigues Praxedes Driele Bretones Santos Dayane Trevisan de Macedo Almeida Estela Oliveira Lima Department of Internal Medicine Sao Paulo State UniversityBotucatu 18618-686Brazil Innovare Biomarkers Laboratory University of CampinasCampinas 13083-877Brazil

BACKGROUND Chronic Hepatitis C(CHC)affects 71 million people globally and leads to liver issues such as fibrosis,cirrhosis,cancer,and death.A better understanding and prognosis of liver involvement are vital to reduce morbidity and *** accurate identification of the fibrosis stage is crucial for making treatment decisions and predicting *** used to grade fibrosis include histological analysis and imaging but have *** markers such as molecular biomarkers can offer valuable insights into *** To identify potential biomarkers that might stratify these lesions and add information about the molecular mechanisms involved in the *** Plasma samples were collected from 46 patients with hepatitis C and classified into fibrosis grades f1(n=13),f2(n=12),f3(n=6),and f4(n=15).To ensure that the identified biomarkers were exclusive to liver lesions(CHC fibrosis),healthy volunteer participants(n=50)were also *** untargeted metabolomic technique was used to analyze the plasma metabolites using mass spectrometry and database *** analyses were performed to identify differential biomarkers among *** Six differential metabolites were identified in each grade of *** six-metabolite profile was able to establish a clustering tendency in patients with the same grade of fibrosis;thus,they showed greater efficiency in discriminating *** This study suggests that some of the observed biomarkers,once validated,have the potential to be applied as prognostic ***,it suggests that liquid biopsy analyses of plasma metabolites are a good source of molecular biomarkers capable of stratifying patients with CHC according to fibrosis grade.

关键词： Chronic Hepatitis C fibrosis Metabolome Biomarkers Plasma Liquid biopsy

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Eccentric training as a new approach for rotator cuff tendinopathy: Review and perspectives

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World Journal of Orthopedics 2014年第5期5卷 634-644页

作者： Paula R camargo francisco Alburquerque-Sendín Tania f Salvini Department of Physical Therapy Federal University of S?o Carlos Department of Physical Therapy University of Salamanca Department of Physical Therapy Federal University of S?o Carlos

Excessive mechanical loading is considered the major cause of rotator cuff tendinopathy. Although tendon problems are very common, they are not always easy to treat. Eccentric training has been proposed as an effective conservative treatment for the Achilles and patellar tendinopathies, but less evidence exists about its effectiveness for the rotator cuff tendinopathy. The mechanotransduction process associated with an adequate dose of mechanical load might explain the beneficial results of applying the eccentric training to the tendons. An adequate load increases healing and an inadequate(over or underuse) load can deteriorate the tendon structure. Different eccentric training protocols have been used in the few studies conducted for people with rotator cuff tendinopathy. further, the effects of the eccentric training for rotator cuff tendinopathy were only evaluated on pain, function and strength. future studies should assess the effects of the eccentric training also on shoulder kinematics and muscle activity. Individualization of the exercise prescription, comprehension and motivation of the patients, and the establishment of specific goals, practice and efforts should allbe considered when prescribing the eccentric training. In conclusion, eccentric training should be used aiming improvement of the tendon degeneration, but more evidence is necessary to establish the adequate doseresponse and to determine long-term follow-up effects.

关键词： Cellular Mechanotransduction Rehabilitation Shoulder Impingement Supraspinatus Tendon injuries

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Modelling Animal Activity as Curves: An Approach Using Wavelet-Based functional Data Analysis

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Open Journal of Statistics 2017年第2期7卷 203-215页

作者： Barbara Henning Airton Kist Alusio Pinheiro Rafael L. camargo Thiago M. Batista Everardo M. Carneiro Sérgio f. dos Reis Programa de Pós-graduaç ã o em Ecologia Universidade Estadual de Campinas Campinas S&atilde o Paulo Brazil Departamento de Matemática e Estatstica Universidade Estadual de Ponta Grossa Ponta Grossa Brazil Departamento de Estatstica Universidade Estadual de Campinas Campinas Brazil Departamento de Biologia Estrutural e funcional Universidade Estadual de Campinas Campinas Brazil Departamento de Biologia Animal Universidade Estadual de Campinas Campinas Brazil

Temporal activity patterns in animals emerge from complex interactions between choices made by organisms as responses to biotic interactions and challenges posed by external factors. Temporal activity pattern is an inherently continuous process, even being recorded as a time series. The discreteness of the data set is clearly due to data-acquisition limitations rather than a true underlying discrete nature of the phenomenon itself. Therefore, curves are a natural representation for high-frequency data. Here, we fully model temporal activity data as curves integrating wavelets and functional data analysis, allowing for testing hypotheses based on curves rather than on scalar and vector-valued data. Temporal activity data were obtained experimentally for males and females of a small-bodied marsupial and modelled as wavelets with independent and identically distributed errors and dependent errors. The null hypothesis of no difference in temporal activity pattern between male and female curves was tested with functional analysis of variance (fANOVA). The null hypothesis was rejected by fANOVA and we discussed the differences in temporal activity pattern curves between males and females in terms of ecological and life-history attributes of the reference species. We also performed numerical analysis that shed light on the regularity properties of the wavelet bases used and the thresholding parameters.

关键词： functional Analysis of Variance High-frequency Data Temporal Activity Pattern Shrinkage Wavelet Thresholding

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Influence of Early Life Stress on Alcohol and Crack Dependents

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Open Journal of Nursing 2020年第5期10卷 490-512页

作者： Elton Brás camargo Júnior Maria Neyrian de fátima fernandes Larissa Bessani Hidalgo Gimenez Jaqueline Rodrigues Stefanini Ana Carolina Guidorizzi Zanetti Edilaine Cristina da Silva Gherardi-Donato Department of Psychiatric Nursing and Human Sciences College of Nursing University of São Paulo Ribeirão Preto Brazil Department of Nursing University of Rio Verde Rio Verde Brazil Department of Nursing Coordination University Federal of Maranhão Imperatriz Brazil Department of Nursing Coordination Faculdade Unida of Campinas (FACUNICAMPS) Gôiania Brazil

Background: Early life stress is a significant public health problem associated with increased rates of psychiatric disorders, especially those related to drug abuse. Objective: To identify the prevalence of early life stress in drug users, to compare the intensity of trauma in alcohol and crack users, and to relate the power of injury to the severity of drug dependence. Method: Cross-sectional analytical study with a sample of 105 alcohol and crack users treated by an outpatient service. The instruments for data collection were sociodemographic data questionnaire, the Mini-International Neuropsychiatric Interview, and the Severity of Dependence Scale. The categorical variables association was analyzed using the Chi-squared test, considering p Results: High prevalence of early stress and severity of dependence were identified, with higher rates among crack users. The early stress revealed in the Alcohol group high rates of emotional (88.7%) and physical (94.3%) neglect and in the Crack group significant frequency of physical (61.5%) emotional abuse (51.9%), sexual (46.2%), and emotional (78.8%) and physical (90.4%) neglect. Crack users are 2.6 times more likely to have been emotionally abused, and 2.1 times more likely to have been sexually abused during childhood when compared to the alcohol group. Conclusion: Early stress was prevalent with significant intensity in drug users, and evaluation of this problem is essential for a better understanding of these disorders.

关键词： Childhood Trauma Adverse Childhood Experiences Child Abuse Early Life Stress Substance Abuse Crack Alcohol

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