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Environmental and Durability Perspective of the Use of Curaua Fiber Treated in Mortars

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Journal of Renewable Materials 2022年第9期10卷 2409-2429页

作者： Afonso R.G.de Azevedo marcelo nascimento Dirlane do Carmo Markssuel T.Marvila Gustavo de C.Xavier Sergio Neves Monteiro UENF-State University of the Northern Rio de Janeiro LECIV-Civil Engineering LaboratoryCampos dos GoytacazesBrazil UFF-Federal Fluminense University TER-Department of Agricultural EngineeringNiteróiBrazil UENF-State University of the Northern Rio de Janeiro LAMAV-Advanced Materials LaboratoryCampos dos GoytacazesBrazil IME-Military Institute of Engineering Department of Materials ScienceRio de JaneiroBrazil

The use of natural lignocellulosic fibers(NLFs)as a reinforcement mechanism for cementitious composites,such as mortar,has been investigated in the last ***,their application has often been restricted to technological evaluation research.A NLF with great potential the curaua,which after treatment with NaOH solution,proved to be technologically feasible for mortars reinforcement based on cement and *** objective of this research was the comparative evaluation between a traditional mortar,based on cement and lime,with 1:1:6:0.8 ratio of cement:lime:sand:water,and a modified mortar with addition of 2 wt.%treated curaua fiber in cement mass by evaluating environmental and durability *** a curing time for 28 days,environmental assessments were carried out and durability methodologies were *** tests performed were:(i)attack by chlorides and sulfate,(ii)the wetting and drying cycles,and(iii)slake durability *** results showed that the mortar with the addition of curaua fiber presented a similar behavior to the reference mixture,both in terms of environmental and durability *** modified mortar is able to be used in internal and external environments,the latter with some ***,it also contributes to the promotion of sustainable use of curaua fiber.

关键词： Natural lignocellulosic fibers curaua mortar durability environmental aspects

Chemical Characterization of Auriferous Ores from the Brazilian State of Paraiba

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Journal of Minerals and Materials Characterization and Engineering 2015年第1期3卷 9-14页

作者： marcelo Rodrigues do nascimento Artur M.G.Lourenco Instituto Federal de Educacao Ciencia e Tecnologia da ParaibaLaboratorio de FlotacaoCampina GrandeBrazil Universidade Federal de Campina Grande Programa de Pos-Graduacao em Engenharia CivilCampina GrandeBrazil

One of the most important problems facing the gold industry is that the placer and free milling gold ores are almost terminating. Hence, the use of refractory ores has been increased during the recent years. In general, gold refractory ores occurs in various types of deposits associated with a range of minerals. Among the refractory ores, the sulfide type is the most common. The methodology employed in the mining process depends on the mode of occurrence of the ore and on the particle size, shape and degree of purity of the auriferous species. We have undertaken a mineralogical investigation of a representative sample of a complex gold mining ore collected in the municipality of Princesa Isabel, Paraiba, Brazil, using X-ray fluorescence spectrometry, X-ray diffractometry, infrared spectroscopy, inductively coupled plasma-atomic emission spectrometry and the Fire Assay. The results showed that the arsenic content of the ore was closely related to the gold content, and that the occurrence of “invisible gold” was associated primarily with pyrite and secondarily with arsenopyrite. The sulfur content of the ore was directly related to its refractoriness. It is concluded that gold mineralization in the study area is mainly of the gold-quartz-sulfide veins (lode gold), while the gold found in the mini-fractures of the deposits is probably associated with the hydrothermal processes that occurred in the region.

关键词： Auriferous Ore Chemical Characterization X-Ray Fluorescence Spectrometry X-Ray Diffractometry Inductively Coupled Plasma-Atomic Emission Spectrometry

Estimating the size of Aedes aegypti populations from dengue incidence data: Implications for the risk of yellow fever outbreaks

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Infectious Disease Modelling 2017年第4期2卷 441-454页

作者： Eduardo Massad Marcos Amaku Francisco Antonio Bezerra Coutinho Claudio JoséStruchiner Luis Fernandez Lopez Annelies Wilder-Smith marcelo nascimento Burattini School of Medicine University of Sao PauloBrazil London School of Hygiene and Tropical Medicine UK College of Life and Natural Sciences The University of DerbyUK Programme of Scientific Computation Fundação Oswaldo CruzRio de JaneiroBrazil Li Ka Shing Knowledge Institute St Michael's HospitalTorontoCanada Institute of Public Health University of HeidelbergGermany Department Public Health and Clinical Medicine Epidemiology and Global HealthUmeåUniversitySE-90185 UmeåSweden Lee Kong Chian School of Medicine Nanyang Technological UniversitySingapore Hospital São Paulo Escola Paulista de MedicinaUniversidade Federal de São PauloSão PauloSPBrazil

In this paper we present a model to estimate the density of aedes mosquitoes in a community affected by *** method consists in fitting a continuous function to the incidence of dengue infections,from which the density of infected mosquitoes is derived *** derivations allow the calculation of the latent and susceptible mosquitoes'densities,the sum of the three equals the total mosquitoes'*** method is illustrated with the case of the risk of urban yellow fever resurgence in dengue infested areas but the same procedures apply for other aedes-transmitted infections like Zika and chikungunya viruses.

关键词： Aedes aegypti Mosquitoes'densities Dengue Zika virus Yellow fever

Twenty-five years of research on the effects of exercise training in breast cancer survivors:A systematic review of the literature

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World Journal of Clinical Oncology 2014年第2期5卷 177-190页

作者： Claudio L Battaglini Robert C Mills Brett L Phillips Jordan T Lee Christina E Story marcelo GB nascimento Anthony Carl Hackney Department of Exercise and Sport Science Christina StoryChapel Hill NC 27599 United States Lineberger Comprehensive Cancer Center Chapel Hill NC 27599 United States Exercise Oncology Research Laboratory University of North CarolinaChapel Hill NC 27599 United States Centro Universitario de Brasilia (UniCeub) SEPN 707/907-Campus do UniCEUB-Asa Norte-Brasília-DF-70790-075Brazil Department of Nutrition University of North Carolina at Chapel HillChapel Hill NC 27599 United States

AIM:To investigate the role of exercise training the past 25 years on major physiological-psychological outcomes studied thus far in this patient ***:Pub Med, Medline Plus, the Cochrane Library, Web of Science, SportD iscus, Embase, Scorpus, and Google Scholar were searched from September to November 2013 to identify exercise training studies that used objective measurements of fitness and/or patient reported outcomes assessed pre and post-exercise training with statistical analyses performed in at least one of the following outcome measurements:Cardiorespiratory function, body composition, muscular strength, fatigue, depression, and overall quality of life. Five reviewers independently identified the studies that met the criteria for the review and discrepancies were resolved by consensus among all ***:Fifty-one studies were included in this review with 5 from the period between 1989-1999, 11 from 2000-2006, and 35 from 2007-2013. The evolution of study designs changed from aerobic only exercise training interventions(1989-1999), to a combination of aerobic and resistance training(2000-2006), to studies including an arm of resistance training or examining the effects of resistance training as the main mode of exercise(2007-2013). Overall, the benefits of exercise showed improvements in cardiorespiratory function, body composition, strength, and patient reported outcomes including fatigue, depression, and quality of ***:Exercise training appears to be safe for most breast cancer patients and improvements in physiological, psychological, and functional parameters can be attained with regular participation in moderate intensity exercise.

关键词： Breast cancer Exercise training Complementary Alternative Medicine Oncology VO2peak Patients reported outcomes

Brain and Law: An EEG Study of How We Decide or Not to Implement a Law

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Journal of Behavioral and Brain Science 2014年第12期4卷 559-578页

作者： Armando Freitas da Rocha Eduardo Massad Fabio Theoto Rocha marcelo nascimento Burattini Research on Natural and Artificial Intelligence (RANI) Jundiaí Brazil School of Medicine University of S&atilde o Paulo Brazil S&atilde o Paulo Brazil London School of Hygiene and Tropical Medicine London UK Instituto de Pesquisas em Teoria da Informaç ã o (IPTI) Aracajú Brazil Laboratory of Signal Processing Department od Electrical Engeneering Faculdade de Engenharia Industrial S&atilde o Paulo Brazil Escola Paulista de Medicina Universidade Federal de S&atilde o Paulo S&atilde o Paulo Brazil

Brazil has introduced a referendum regarding the prohibition of firearm commerce and propaganda arguments have invoked socially and personally driven issues in the promotion of voting in favor of and against firearm control, respectively. Here, we used different techniques to study the brain activity associated with a voter’s perception of the truthfulness of these arguments and their influence on voting decisions. Low-resolution tomography was used to identify the possible different sets of neurons activated in the analysis of the different types of propaganda. Linear correlation was used to calculate the amount information H(ei) provided to different electrodes about how these sets of neurons enroll themselves to carry out this cognitive analysis. The results clearly showed that vote decision was not influenced by arguments that were introduced by propaganda, which was typically driven by specific social or self-interest motives. However, different neural circuits were identified in the analysis of each type of propaganda argument, independently of the declared vote (for or against the control) intention.

关键词： EEG Brain Mapping Neuromarketing Language Understanding Politics Election Decision Making

Does Linear Canopy Openings in a Lowland Atlantic Tropical Forest Cause Edge Effects on Seedling Communities?

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Open Journal of Ecology 2014年第15期4卷 945-949页

作者： Pablo J. F. Pena Rodrigues Mariana A. Iguatemy marcelo T. nascimento Instituto de Pesquisas Jardim Botanico do Rio de Janeiro Rio de Janeiro-RJ Brazil Universidade Estadual do Norte Fluminense Darcy Ribeiro Campos dos Goytacazes-RJ Brazil

Edge effects and linear canopy openings may change ecological patterns and processes on forests. Here we investigate if these openings in a lowland Brazilian Atlantic forest cause edge effects on seedlings. We sampled seedling communities at forest edges near to two linear canopy openings (gas pipeline and power line) and in interiors far from edges. Comparisons between the seedling communities were performed to access edge effects. Density and basal area patterns were compared using, hierarchical two-way ANOVAs and the number of newly germinated seedlings, mortality and resprouts were compared by one-way ANOVAs. The results showed that edge effects of linear canopy openings affect seedling communities leading to low densities on edges that showed less favorable conditions for arrival, establishment and initial survival. The basal area patterns were not affected by edge effects apparently by the resistance of the seedlings that have more than 4 mm diameter. Therefore, linear canopy openings caused edge effects, which determine low seedling densities on edges. However this pattern is not due to increase mortality on these edges, but probably caused by the reduction on germination and establishment.

关键词： Forest Regeneration Fragmentation Disturbance Human-Modified Habitats Secondary Forests

子宫平滑肌肉瘤的治疗预后-来自悉尼妇科肿瘤中心的报告

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国际医药卫生导报 2009年第17期15卷 24-28页

作者：蒋春萍 Selvan Pather Chris Dalrymple Ehab Al-Rayyan marcelo nascimento Philip Beale Michael Jackson Chris Milross Jonathan Carter 深圳市蛇口人民医院 518067 澳大利亚悉尼皇家医院妇科肿瘤中心

目的复习20年子宫平滑肌肉瘤诊治经验，研究影响患者生存期的因素，为科学诊治提供依据。方法复习1987—2007年澳大利亚悉尼皇家医院和飞利浦医院悉尼妇科肿瘤中心子宫平滑肌肉瘤病例资料，采用卡方和t检验对数据进行统计分析。结果20... 详细信息

目的复习20年子宫平滑肌肉瘤诊治经验，研究影响患者生存期的因素，为科学诊治提供依据。方法复习1987—2007年澳大利亚悉尼皇家医院和飞利浦医院悉尼妇科肿瘤中心子宫平滑肌肉瘤病例资料，采用卡方和t检验对数据进行统计分析。结果20年间共诊治27例子宫平滑肌肉瘤，22例资料完整、用于本研究。手术治疗21例，其中3例卵巢切除；辅助治疗12例。患者年龄大小，是否绝经、辅助治疗和切除卵巢的无瘤生存期（Progression-free Survival，PFS）和总生存期（overall survival，os）无差异，早期临床期别患者的PFS较长且有统计学意义。结论患者年龄和是否绝经对子宫平滑肌肉瘤预后影响不大，辅助化学或放射治疗和切除卵巢未能改善患者生存期限，临床期别是影响子宫平滑肌肉瘤预后的重要因素。

关键词：子宫平滑肌肉瘤手术辅助治疗预后

Progress toward understanding the contribution of alkali generation in dental biofilms to inhibition of dental caries

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International Journal of Oral Science 2012年第3期4卷 135-140页

作者： Ya-Ling Liu Marcelle nascimento Robert A Burne Depa rtment of Oral Biology College of Dent stry University of Florida Gainesville USA Department of Restorative Dental Sciences Division of Operative Dentistry College of Dentistry University of Florida Gainesville USA

Alkali production by oral bacteria is believed to have a major impact on oral microbial ecology and to be inibitory to the initiation and progression of dental caries. A substantial body of evidence is beginning to accumulate that indicates the modulation of the alkalinogenic potential of dental biofilms may be a promising strategy for caries control. This brief review highlights recent progress toward understanding molecular genetic and physiologic aspects of important alkali-generating pathways in oral bacteria, and the role of alkali production in the ecology of dental biofilms in health and disease.

关键词： arginine biofilm dental caries microbial ecology urea

Colon and rectal cancer:An emergent public health problem

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World Journal of Gastroenterology 2024年第7期30卷 644-651页

作者： Marina Pinheiro David nascimento Moreira Michele Ghidini LAQV REQUIMTEDepartment of ChemistryFaculty of PharmacyUniversity of Porto4050-313 PortoPortugal Unidade de Saúde Pública Unidade Local de Saúde Barcelos/EsposendeBarcelinhos 4755-069BragaPortugal Medical Oncology Unit Fondazione IRCCS Ca’Granda Ospedale Maggiore PoliclinicoMilan 20122Italy

Colorectal cancer ranks third globally,with a high mortality *** the United States,and different countries in Europe,organized population screenings exist and include people between 50 and 74 years of *** screenings have allowed an early diagnosis and consequently an improvement in health *** and rectal cancer(CRC)is a disease of particular interest due to the high global burden associated with it and the role attributed to prevention and early diagnosis in reducing morbidity and *** study is a review of CRC pathology and includes the most recent scientific evidence regarding this pathology,as well as a diagnosis of the epidemiological situation of ***,the recommendation from a public health perspective will be discussed in detail taking into account the context and the most current recommendations.

关键词： Colon and rectal neoplasia Colon and rectal tumor Mortality Morbidity