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Simulated rainfall in Brazil:An alternative for assesment of soil surface processes and an opportunity for technological development

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International Soil and Water Conservation Research 2024年第1期12卷 29-42页

作者： Camila Calazans da Silva Luz Wilk Sampaio de Almeida Adilson Pacheco de Souza Nivaldo Schultz Jamil alexandre Ayach Anache Daniel Fonseca de carvalho Postgraduate Program in Agronomy-Soil Sciences Federal Rural University of Rio de JaneiroSeropédicaRJBrazil Agronomy department Federal Institute of EducationScience and Technology of RondôniaAriquemesROBrazil Federal University of Mato Grosso SinopMTBrazil Federal Rural University of Rio de Janeiro SeropédicaRJBrazil Federal University of Mato Grosso do Sul Campo GrandeMSBrazil

Rainfall simulators(RS)have been used,above all,to evaluate hydrological processes related to soil water infiltration,surface runoff and soil *** allow repeatability of rain application with different precipitation intensities in field and/or laboratory conditions and should produce events with physical characteristics similar to natural *** this manuscript,we carried out a bibliometric and scientometric analysis of studies with simulated rainfall in Brazil to assess the temporal evolution of publications,the main topics addressed and the degree of technological development of the *** searched for the terms“rainfall simulator”OR“simulated rainfall”AND“Brazil”in the Scopus,Web of Science,SciELO and Google Scholar *** found 143 articles published in the last 37 years(1985-2022).Our findings indicate that the main research areas covered in papers are soil erosion(57.34%),soil water infiltration(24.47%),nutrient losses(9.8%)and RS development and calibration/assessment(8.39%).In recent years,the number of published papers in international high-impact factor journals has *** of the papers(49.65%)refer to studies carried out by institutions located in the south and southeast regions of ***,there is a large gap of studies on simulated rainfall in other regions of Brazil,where important biomes such as the Cerrado,Amazon,Caatinga,and their transitions are *** study informs research priorities on soil erosion under simulated rainfall and provides a bibliographic database that can assist in more detailed future analyses.

关键词： Rainfall simulator Soil and water losses Soil water infiltration Bibliometrics Scientific review

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Recovering Wood Waste to Produce Briquettes Enriched with Commercial Kraft Lignin

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Natural Resources 2021年第5期12卷 181-195页

作者： Carlos Eduardo Silveira da Silva Fernando José Borges Gomes Larisse Aparecida Ribas Batalha Roberto Carlos Costa Lelis Ana Márcia Macedo Ladeira carvalho Angélica de Cássia Oliveira Carneiro alexandre monteiro de carvalho Federal Rural University of Rio de Janeiro Forest Products Department Rio de Janeiro Brazil Federal University of Viç osa Forest Engineer Department Vi&#231 osa Minas Gerais Brazil

Aiming to use lignocellulosic biomass as energy source, one of the process that may aggregate values is the densification process, which allows the production of bioenergy using solid fuels, mainly for reducing transportation costs. In this research, solid fuel from co-briquetting of wood residues from sawmill using commercial kraft lignin as binder was investigated. The effects of compression pressure (900, 1200 and 1500 PSI) and briquette formulation (varying wood and kraft lignin proportion) on the quality and characteristics of briquettes were evaluated. The main findings were that briquetting of wood residues with kraft lignin resulted in an improvement of bulk density, strength rupture modulus, low heating value (LHV) and high heating value (HHV). The briquettes using 4% and 6% of kraft lignin, and submitted to 1200 to 1500 PSI, presented higher bulk density and strength resistance, respectively. On the other hand, the heating values showed the highest results with the addition of 2% lignin at 900 PSI, being the legal range for additives in briquettes for many countries such as in European Union.

关键词： Hardwood Biomass densification Heating Values Solid Fuel

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Natural Mg silicates with different structures and morphologies: Reaction with K to produce K2MgSiO4 catalyst for biodiesel production

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International Journal of Minerals,Metallurgy and Materials 2020年第1期27卷 46-54页

作者： Fabiane carvalho Ballotin Mayra Nascimento Sara Silveira Vieira alexandre carvalho Bertoli Ottávio Carmignano Ana Paula de carvalho Teixeira Rochel Montero Lago departamento de Química Universidade Federal de Minas GeraisBelo HorizonteBrasil Doutorado Inovação/Mineradora Pedras Congonhas Universidade Federal de Minas Gerais31270-901 Belo Horizonte-MGBrazil

In this work, different magnesium silicate mineral samples based on antigorite, lizardite, chrysotile(which have the same general formula Mg3Si2O5(OH)4), and talc(Mg3Si4O10(OH)2) were reacted with KOH to prepare catalysts for biodiesel production. Simple impregnation with 20 wt% K and treatment at 700–900°C led to a solid-state reaction to mainly form the K2MgSiO4 phase in all samples. These results indicate that the K ion can diffuse into the different Mg silicate structures and textures, likely through intercalation in the interlayer space of the different mineral samples followed by dehydroxylation and K2MgSiO4 formation. All the materials showed catalytic activity for the transesterification of soybean oil(1:6 of oil : methanol molar ratio, 5 wt% of catalyst, 60°C). However, the best results were obtained for the antigorite and chrysotile precursors, which are discussed in terms of mineral structure and the more efficient formation of the active phase K2MgSiO4.

关键词： silicate serpentinite lizardite antigorite talc chrysotile biodiesel

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Litter decomposition and nutrient release for two tropical N-fixing species in Rio de Janeiro,Brazil

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Journal of Forestry Research 2022年第2期33卷 487-496页

作者： David Pessanha Siqueira Giovanna Campos Mamede Weiss de carvalho JoséGabriel de Souza Silva Marcos Vinicius Winckler Caldeira deborah Guerra Barroso Laboratório de Fitotecnia Universidade Estadual do Norte Fluminense Darcy RibeiroAvenida Alberto Lamego2000Campos dos GoytacazesRio de JaneiroBrazil departamento de Ciências Florestais e da Madeira Universidade Federal do Espírito SantoAvenida Governador Lindenberg316Jerônimo MonteiroEspírito SantoBrazil department of Geosciences and Natural Resources Management University of CopenhagenRolighedsvej 23Frederisksberg CDenmark

Litter production and decomposition are critical to forest productivity,nutrient cycling,and carbon seques-tration in tropical woody ***,nutrient release and leaf litter stoichiometry in tropical legume tree plantations over the long term after outplanting are poorly understood or even *** improving our under-standing of the pattern of changes in the decomposition of N-fixing leaf litters and their possible impact on carbon stor-age,we measured litter production,mass loss and nutrient release for 240 d during litter decomposition for two tropical legume tree species(Plathymenia reticulata and Hymenaea courbaril),in Rio de Janeiro,*** production for *** was 5.689 kg ha^(−1) a^(−1) and 3.231 kg ha^(−1) a^(−1) for *** patterns of mass loss rates were similar;however,nutrient release was greater for ***,while *** showed immobilization of nutrients,especially for N,which increased by almost 20%in the early phase of decomposition followed by gradual *** from the N-fixing species did differ in nutrient chemistries over time,which was not surprising given that initial nutrient concentrations varied broadly,except for C and *** of the nutrient concentrations increased as the remaining litter mass decreased in both species,except for C and *** C:N and N:P ratios differed between the species,but N:P did not correlate to mass *** species had N-rich leaves,but *** decomposition was very likely P-limited,while *** seemed to be co-limited by N and *** results showed different patterns in nutrient release and the stoichi-ometry involved in the decomposition dynamics of the two tropical N-fixing species,even though they have similar litter decay *** species,but especially ***,may help re-establish nutrient cycling in disturbed ecosystems.

关键词： Nutrient dynamics Legume species Litter chemistry Ecological stoichiometry Tropical forest

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Provisioning of Inter-Domain QoS-Aware Services

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Journal of Computer Science & Technology 2015年第2期30卷 404-420页

作者： Fernando Matos alexandre Matos Paulo Simoes Edmundo monteiro department of Computer Systems Federal University of Paraba Jodo Pessoa 58051-900 Brazil department of Information Systems State University of Santa Catarina Sao Bento do Sul 89283-081 Brazil department of Informatics Engineering University of Coimbra Coimbra 3030-290 Portugal Centre for Informatics and Systems University of Coimbra Coimbra 3030-290 Portugal

Cooperation among service providers, network providers, and access providers in the Internet allows the creation of new services to offer to customers that are in other domains, thus increasing revenue. However, the Internet heterogeneous environment, where each provider has its own policies, infrastructure and business goals, hinders the deployment of more advanced communication services. This paper presents a Quality of Service （QoS） for Inter-Domain Services （QIDS） model that allows inter-domain QoS-aware services to be defined, configured, and adapted in a dynamic and on-demand fashion, among service providers. This is accomplished by： 1） the use of a common communication channel （business layer） where service providers publish and search for services, and interact with each other to contract and manage these services; 2） the templates to specify the business and technical characteristics of the services; 3） the automatic composition of services using service dements （smaller services） a^cording to performance and service-specific QoS parameters; and 4） the creation and enforcement of configuration rules for the underlying infrastructure. A prototype was implemented to validate QIDS and performance tests were conducted on an inter-domain Border Gateway Protocol （BGP）/Multiprotocol Label Switching （MPLS） Virtual Private Network （VPN） scenario.

关键词： service provisioning inter-domain QoS service composition

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Healthcare Professionals’ Adherence to Contact Precautions at a Maternal and Child Teaching Hospital

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Open Journal of Nursing 2023年第12期13卷 839-854页

作者： Lucas Eduardo Luizão Marli de carvalho Jericó Angela Silveira Gagliardo Calil Viviane decicera Colombo Oliveira alexandre Lins Werneck Ingrid de Campos Truzzi Eliana Ofelia Lapa Rodriguez Maria Rita Rodrigues Vieira Pedro Paulo de carvalho Jericó Medical School in Sã o Jose do Rio Preto S&#227o Jose do Rio Preto Brazil Federal University of Sergipe Sergipe Brazil

Background: Healthcare-associated infections affect hundreds of millions of patients worldwide. Children have greater susceptibility to healthcare-associated infections due to the immaturity of their immune system. Contact precautions aim to promote safety, protection and prevention of contamination. Thus, the objective of this study was to verify adherence to contact precaution measures, as well as compliance to the use of personal protective equipment. Methods: This cross-sectional observational study was carried out from July to October 2019 using a checklist to evaluate health professionals’ adherence to hand hygiene procedures and the use of gloves and surgical gowns when assisting children on contact precautions. Results: A total of 941 observations were carried out in a total of 300.532 hours. Hand hygiene was performed before and after contact with the patient in 58.84% and 75.09% of the cases, respectively and a surgical gown was used in 86.40% of the cases. The use of gloves was the variable most adhered to by professionals (87.57%). Intensive care unit professionals were the care workers who most complied with the regulation regarding hand hygiene after contact with the patient (p = 0.009) and the use of the surgical gown (p < 0.001). The correct hand hygiene technique was the recommendation with least adherence. Non-compliance to the hand hygiene technique was statistically significant among intensive care unit professionals (p = 0.002). Conclusions: Adherence to hand hygiene before contact with the patient and compliance with the hand hygiene technique were neglected by most professionals. However, there was good adherence to the use of surgical gloves and gowns, as well as high compliance to the techniques of removing these items. .

关键词： Hospital Infection Universal Precautions Patient Safety Pediatric Nursing Isolation of Patients Microbial Drug Resistance

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Multi-mechanical waves against Alzheimer’s disease pathology:a systematic review

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Translational Neurodegeneration 2021年第3期10卷 459-486页

作者： Francisca monteiro Ioannis Sotiropoulos Óscar carvalho Nuno Sousa Filipe S.Silva Center for Microelectromechanical Systems(CMEMS) University of MinhoCampus Azurém4800-058 GuimarãesPortugal Life and Health Sciences Research Institute(ICVS) Medical SchoolUniversity of MinhoCampus Gualtar4710-057 BragaPortugal ICVS/3B’s-PT Government Associate Laboratory Braga/GuimarãesPortugal Institute of Biosciences&Applications NCSR“demokritos” AthensGreece

Alzheimer’s disease(AD)is the most common cause of dementia,afecting approximately 40 million people *** inefectiveness of the available pharmacological treatments against AD has fostered researchers to focus on alternative strategies to overcome this *** vibrations delivered in diferent stimulation modes have been associated with marked improvements in cognitive and physical performance in both demented and nondemented *** of the mechanical-based stimulation modalities in eforts are earlier whole-body vibration,transcranial ultrasound stimulation with microbubble injection,and more recently,auditory ***,there is a huge variety of treatment specifcations,and in many cases,conficting results are *** this review,a search on Scopus,PubMed,and Web of Science databases was performed,resulting in 37 *** studies suggest that mechanical vibrations delivered through diferent stimulation modes are efective in attenuating many parameters of AD pathology including functional connectivity and neuronal circuit integrity defcits in the brains of AD patients,as well as in subjects with cognitive decline and non-demented older *** the evolving preclinical and clinical evidence on these therapeutic modalities,their translation into clinical practice is not consolidated ***,this comprehensive and critical systematic review aims to address the most important gaps in the reviewed protocols and propose optimal regimens for future clinical application.

关键词： Alzheimer’s disease Auditory stimulation Mechanical vibrations Ultrasounds Whole-body vibration

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Waste Tire Rubber-based Refrigerants for Solid-state Cooling devices

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Chinese Journal of Polymer Science 2020年第7期38卷 769-775,I0007页

作者： Nicolau Molina Born Erik Oda Usuda Mariana da Silva Gigliotti denílson JoséMarcolino de Aguiar William Imamura Lucas Soares Paixao alexandre Magnus Gomes carvalho Catalan Institute of Nanoscience and Nanotechnology(ICN2) 08860BellaterraBarcelonaSpain The Institute of Photonic Sciences(ICFO) 08193CastelldefelsBarcelonaSpain Universidade Federal de Sāo Paulo(UNIFESP) 00972-270DiademaSPBrazil Instituto de Física"Gleb Wataghin" Universidade Estadual de Campinas(UNICAMP)13083-970CampinasSPBrazil Universidade Tecnológica Federal do Paraná(UTFPR) 84017-220Ponta GrossaPRBrazil Faculdade de Engenharia Mec(a)nica Universidade Estadual de Campinas(UNICAMP)13083-860CampinasSPBrazil departamento de Engenharia Mec(a)nica Universidade Estadual de Maringá(UEM)870-900MaringáPRBrazil

Management of discarded tires is a compelling environmental issue *** there are several approaches developed to recycle waste tire rubbers,their application in solid-state cooling is still *** the high barocaloric potential verified for elastomers,the use of waste tire rubber(WTR)as a refrigerant in solid-state cooling devices is very ***,we investigated the barocaloric effects in WTR and polymer blends made of vulcanized natural rubber(VNR)and WTR,to evaluate its feasibility for solid-state cooling *** adiabatic temperature changes and the isothermal entropy changes reach giant values,as well as the performance parameters,being comparable or even better than most barocaloric materials in ***,pure WTR and WTR-based samples also present a faster thermal exchange than VNR,consisting of an additional advantage of using these discarded ***,the present findings evidence the encouraging perspectives of employing waste rubbers in solid-state cooling based on barocaloric effects,contributing to both the recycling of polymers and the sustainable energy technology field.

关键词： Waste tire rubber Solid-state cooling Barocaloric effect Tire recycling Sustainable energy

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Evaluation of total protein,peroxidase,and nutrients measured by pXRF for the determination of tissue rejuvenation/reinvigoration of Eucalyptus microcorys

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林业研究:英文版 2023年第5期34卷 1563-1576页

作者： Júlio Cézar Tannure Faria Caius Ribeiro-Kumara William Macedo delarmelina Filipe Aiura Namorato Dione Richer Momolli Anderson Cleiton José Enéas Ricardo Konzen Dulcinéia de carvalho Gilvano Ebling Brondani department of Forestry and Wood Sciences Federal University of Espírito SantoJerônimo MonteiroEspírito SantoBrazil department of Forest Sciences University of HelsinkiHelsinkiFinland Federal Institute of Education Science and Technology of Espírito SantoIbatibaEspírito SantoBrazil department of Soil Science Federal University of LavrasLavrasMinas GeraisBrazil department of Forest Engineering Federal University of Santa MariaSanta MariaRio Grande Do SulBrazil department of Forestry Sciences Federal University of LavrasLavrasMinas GeraisBrazil department Interdisciplinary Federal University of Rio Grande Do SulImbéRio Grande Do SulBrazil

Ontogenetic aging of tissues and the gradual decrease of adventitious rooting are known challenges for the clonal propagation of woody species,hampering clonal forestry *** study examined possible signatures of tissue rejuvenation/reinvigoration in different propagated materials of Eucalyptus microcorys by analyzing the total protein profile,peroxidase activity,macro-and micronutrient contents,and adventitious rooting of mini *** analyses were performed on *** shoots which were successfully obtained by seminal and grafting propagation,micropropagation with epicormic shoots,and indirect *** four mature trees used in the propagation,tissues from the one with the best propagation results were investigated for signs of tissue rejuvenation and/or *** individuals from each technique were randomly selected and transferred to a semi-hydroponic"channel"*** four weeks in the seedbed,the total protein,peroxidase activity,nutrient content and rooting of the mini cuttings were ***-PAGE enabled the differentiation of leaf samples obtained by grafting from the other propagation techniques,as revealed by two distinct *** obtained by micropropagation with epicormic shoots showed the highest peroxidase activity,while those obtained by seminal propagation and from the selected mature tree showed the lowest peroxidase activity.A portable X-ray fluorescence spectroscope(pXRF)identified adequate nutrient content in most of the nutrients tested in materials obtained by seminal and grafting propagation,and by indirect *** analysis of adventitious rooting showed that the highest rooting percentage was observed in mini cuttings from seminal propagation(75%)followed by indirect organogenesis(35%).Based on principal component analysis,it was concluded that rooting of mini cuttings from both seminal propagation and indirect organogenesis was associated with phosphorous,sulphur,and potassium

关键词： Adventitious rooting Juvenility Reinvigoration Rejuvenation Ontogenetic age

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Sex and season explain spleen weight variation in the Egyptian mongoose

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Current Zoology 2019年第1期65卷 11-20页

作者： Victor BANdeIRA Emilio Virgos alexandre AZEVEDO Joao carvalho Monica V. CUNHA Carlos Fonseca Dartment of Biology Centro de Estudos do Ambiente e do Mar (CESAM) University of Aveiro Campus Universitario de Santiago Aveiro 3810-193 Portugal departamento de Biologia Geologia Fisica y Qufmica Inorganica Area Biodiversidad y Conservacion Escuela Superior de Ciencias Experimentales y Tecnologia (ESCET) Universidad Rey Juan Carlos c/Tulipan s/n Mostoles Madrid E-28933 Spain Leibniz Institute for Zoo and Wildlife Research Alfred-Kowalke-Straβe 17 Berlin 10315 Germany Instituto de Ciencias Biomedicas Abel Salazar R. Jorge de Viterbo Ferreira 228 Porto 4050-313 Portugal Instituto Nacional de Investigaqao Agraria e Veterinaria (INIAV) IP-National Institute for Agrarian and Veterinary Research Rua dos Lagidos Lugar da Madalena Vairao 4485-655 Portugal cE3c-Centre for Ecology Evolution and Environmental Changes Faculdade de Ciencias Universidade de Lisboa Lisboa 1749-016 Portugal BiolSI-Biosystems & Integrative Sciences Institute Faculdade de Ciencias Universidade de Lisboa Lisboa 1749-016 Portugal Wildlife Ecology & Health group (WE&H) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS) Departament de Medicina i Cirurgia Animals Universitat Autonoma de Barcelona 08193-Bellaterra Barcelona Spain

The Egyptia n mon goose (Herpestes ichneumon Linn aeus, 1758) is a medium-sized car nivore that experienced remarkable geographic expansion over the last 3 decades in the Iberian Peninsula. In this study, we investigated the association of species-related and abiotic factors with spleen weight (as a proxy for immunocompete nee) in the species. We assessed the relationship of body con dition, sex, age, seas on, and envir onmental conditi ons with splee n weight established for 508 hunted specimens. Our results indicate that the effects of sex and season outweigh those of all other variables, including body condition. Spleen weight is higher in males than in females, and heavier spleens are more likely to be found in spring, coinciding with the highest period of investment in reproduction due to mating, gestation, birth, and lactation. Coupled with the absence of an effect of body condition, our findi ngs suggest that splee n weight variation in this species is mostly influe need by lifehistory traits linked to reproduction, rather than overall energy availability, winter immunoenhancement, or energy partitioning effects, and prompt further research focusing on this topic.

关键词： body condition carnivore Herpestes ichneumon Iberian Peninsula mongoose spleen weight

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