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Relationship between Physical and Chemical Soil Attributes and Plant Species Diversity in Tropical Mountain Ecosystems from Brazil

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journal of Mountain Science 2014年第4期11卷 875-883页

作者： Ferna de CARVALHO Edward Luis GODOY Francy j. G. LISBOA Fatima Maria de Souza MOREIRA Francisco Adriano de SOUZA ricardo Luis Louro BERBARA G Wilson FERNes Laboratory of Evolutionary Ecology and Biodiversity Department of Geral Biology Institute of Biology Sciences Federal University of Minas Gerais Belo Horizonte MG 30161-901 P.O. Box 486 Brazil Department of Biology Microbiology and Biological Processes Department of Soil Science Federal University of LavrasLavras Minas Gerais 37200-000 P.O.Box 3037 Brazil Department of Biological Sciences Ferderal University of S?o Jo?o Del Rei S?o Jo?o del-Rei Minas Gerais 36307-352Brazil Laboratory of Soil Biology Department of Soil Science Federal Rural University of Rio de Janeiro Seropédica Rio de Janeiro 23890-000 Brazil Embrapa Maize and Sorghum Center for Applied Biology Rod. MG 424 KM 45 Caixa Postal Sete Lagoas Minas Gerais 35701-970 P.O. Box 285 Brazil

Although the high diversity of plant species in the rupestrian fields has been primarily attributed to the existence of a set of distinct habitats, few studies support this assertion. The present study aimed to further investigate the relationship between physical and chemical attributes of soils with the diversity of plant species in this unique ecosystem. The rupestrian field is a unique vegetation formation that covers some of the southeastern Brazilian mountains in the transition of the Atlantic rain forest and the Cerrado(savanna). Different habitats occur according to soil characteristics(e.g., presence of rocks, sand, fertility, hydrology, etc.). These attributes ultimately influence the vegetation that is highly adapted to the harsh edaphic and climatic mountain conditions. Five distinct habitats were studied by us: rocky outcrops, peat bogs, sandy bogs, quartz gravel fields, and "cerrado"(savanna). A floristic survey indicated that four families are found at greater frequency: Poaceae, Asteraceae, Cyperaceae, and Leguminosae. The greatest diversity of plant species was found in the rocky outcrops habitat, followed by cerrado, peat bog, quartz gravel grassland, and sandy bogs, respectively. The main difference in the floristic composition among these habitats was related to the dominant species. Trachypogon spicatus(Poaceae) was the most dominant species in the rocky outcrops, Axonopus siccus(Poaceae) in the peat bogs, Lagenocarpus rigidus(Cyperaceae) in the sandy bogs, Schizachyrium tenerum(Poaceae) in the cerrado, while Vellozia sp. 8(Velloziaceae) dominated the vegetation in the quartz gravel grassland. This study demonstrated that physical and chemical soil properties strongly related the diversity of plant species occurring in the different habitats of rupestrian fields.

关键词：植物物种多样性山地生态系统土壤特性热带雨林属性化学物理巴西

Second-growth and small forest clearings have little effect on the temporal activity patterns of Amazonian phyllostomid bats

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Current Zoology 2020年第2期66卷 145-153页

作者： ricardo ROCHA Adria Lopez-Baucells Fabio Z.Farneda Diogo F.Ferreira Ines SiLVA Marta AcAcio jorge M.Palmeirim Christoph F.j.M eyer Centre for Ecology Evolution and Environmental ChangesFaculty of SciencesUniversity of LisbonLisbon1749-016Portugal Biological Dynamics of Forest Fragments Project National Institute for Amazonian Research and Smithsonian Tropical Research InstituteManaus69011-970Brazil Conservation Science Group University of CambridgeCambridgeCB23EJUK Granollers Museum of Natural Sciences Granollers08402Spain Department of Ecology Federal University of Rio de JaneiroRio de Janeiro21941-902Brazil CIBI0-lnBI0 Research Centre in Biodiversity and Genetic ResourcesUniversity of PortoVairao4485-661Portugal Conservation Ecology Program School of Bioresources and TechnologyKing Mongkufs University of Technology ThonburiBangkok10150Thailand School of Environmental Sciences University of East AngliaNorwichNR47TJUKand'Ecosystems Environment Research Centre(EERC) School of ScienceEngineering and EnvironmentUniversity of SalfordSalfordM54WTUK

Secondary forests and human-made forest gaps are conspicuous features of tropical ***,behavioral responses to these aspects of anthropogenically modified forests remain poorly ***,we analyze the effects of small human-made clearings and secondary forests on tropical bats by examining the guild-and species-level activity patterns of phyllostomids sampled in the Central Amazon,***,we contrast the temporal activity patterns and degree of temporal overlap of 6 frugivorous and 4 gleaning animalivorous species in old-growth forest and second-growth forest and of 4 frugivores in old-growth forest and forest *** activity patterns of frugivores and gleaning animalivores did not change between old-growth forest and second-growth,nor did the activity patterns of frugivores between old-growth forest and ***,at the species level,we detected significant differences for Artibeus obscurus(old-growth forest ***-growth)and ***(old-growth forest ***).The degree of temporal overlap was greater than random in all sampled ***,for frugivorous species,the degree of temporal overlap was similar between old-growth forest and second-growth;whereas for gleaning animalivores,it was lower in second-growth than in old-growth *** the contrary,forest clearings were characterized by increased temporal overlap between *** in activity patterns and temporal overlap may result from differential foraging opportunities and dissimilar predation ***,our analyses suggest that activity patterns of bats in second-growth and small forest clearings,2 of the most prominent habitats in humanized tropical landscapes,varies little from the activity patterns in old-growth forest.

关键词： Amazon behavior forest gaps niche partitioning secondary forest temporal overlap

Propagation and localisation of partial discharge in transformer bushing based on ultra-high frequency technique

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High Voltage 2021年第4期6卷 684-692页

作者： jun jiang judong Chen jiansheng Li Xiaoping Yang ricardo Albarracín-Sánchez Prem Ranjan Chaohai Zhang jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and AstronauticsNanjingChina Department of Electrical&Electronic Engineering School of EngineeringThe University of ManchesterManchesterUK State Grid jiangsu Electric Power Co.Ltd.Research Institute NanjingChina State Grid jiangsu Electric Power Co.Ltd. NanjingChina Department of Electrical Electronic and Automation Engineering and Applied PhysicsUniversidad Politécnica de Madrid(UPM)MadridSpain

As an essential component of power transformers,the detection and diagnosis of incipient partial discharge(PD)activities of bushings are of great significance.A 35-kV oil-impregnated paper(OIP)bushing is *** bushing is modelled by coaxial theory and electromagnetic(EM)*** the paths of PD-induced ultra-high frequency(UHF)signal propagating in the bushing are OIPs and oil gap,small attenuation during signal propagation is *** OIP is composed of het-erogeneous media compared with pure oil,there will be relatively less UHF signal leakage from OIPs,whereas more leakage from the oil *** leakage provides the possibility of non-contact detection outside the bushing by UHF *** mea-surements with UHF method are carried out on the ***,the minimum energy method is used to extract time-difference-of-arrival(TDOA),and Chan al-gorithm is adopted to locate points of UHF signal *** accuracy locating with a small error of 15 cm has been *** contactless UHF method-based tests have demonstrated the effectiveness of online monitoring and locating of bushing PD.

关键词： locating high outside

Diabetic and Prediabetic Profile of Patients in a Family Health Care Unit of Salvador, Northeastern Brazil

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Open journal of Endocrine and Metabolic Diseases 2016年第1期6卷 66-71页

作者： joão Zallio Coelho Pedro julião Zallio Coelho Sanchela Raiane Pereira de Oliveira Alex Farias soares jacqueline Novais Santana Paulo ricardo Bacelar Macedo juliana Silveira de Freitas Danilo Guimarães Nogueira Andrade Mirella Hansen de Almeida Denise Rosso Tenório Wanderley Rocha Alberto Krayyem Arbex Division of Endocrinology IPEMED Medical School Sao Paulo Brazil Visiting Physician Joslin Diabetes Center Harvard University Boston USA Visiting Scientist Harvard T. H. Chan School of Public Health Harvard University Boston USA

Diabetes Mellitus is one of the most prevalent diseases in the world. In Brazil, 8.7% of the population between 20 and 79 years of age has diabetes, estimating 11.6 million diabetics. It is commonly associated with other co-morbidities such as hypertension, dyslipidemia and obesity, which put these patients into a high cardiovascular risk profile. This study was performed using the medical records of enrolled population attending a Family Health Unit of Alto do Coqueirinho, Salvador, Northeastern Brazil, consisting of one doctor, one nurse, one dentist, one nursing technician and six community health workers. Medical records and data provided by the system of the Primary Care Information (SIAB), showed total of 2495 patients. Considering the prevalence morbidities in this population, hypertension was present in 9.8% of patients and Type 2 Diabetes in only 3.6%. Since the prevalence of morbidities is the key indicator to the development of public health policies, it seems important a better knowledge on the prevalence rates of diabetes, prediabetes and its co-morbidities of this population. Future plans and projects for health professionals will be based on a consistent medical record.

关键词： Diabetes Prediabetes Comorbidities Family Health Unit

Placenta and Trophoblast 1

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Pharmacogenetics of hepatocellular carcinoma and cholangiocarcinoma

丛书名： Methods in Molecular Medicine 122

2006年

作者： Michael j. soares(1)joan S. Hunt(2)

ISBN: (纸本)9781588294043

A collection of cutting-edge laboratory techniques for the study of the trophoblast and placental biology. The techniques presented range from experimental animal models, to animal and human placental organ and cell culture systems, to morphological, biochemical, and molecular strategies for assessing trophoblast/placental growth, differentiation and function. Volume 2 provides readily reproducible protocols for studying trophoblast invasion, maternal immune cell responses to pregnancy, and the hormone producing capabilities of the placenta. There are also methods to investigate the barrier function of the placenta, its role in regulating the transport of nutrients and wastes, and the adaptations of trophoblast cells and the placenta to disease. Highlights include techniques to analyze trophoblast cell interactions with the uterine vasculature and immune cells, and the endocrine functions of the placenta. A companion first volume concentrates on methods for investigate embryo-uterine implantation, trophoblast cell development, and the organization and molecular characterization of the placenta

关键词： Placenta

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Cancer Drug Resistance 2019年第3期2卷 680-709页

作者： Marta Alonso-Peña Anabel Sanchez-Martin Paula Sanchon-Sanchez Meraris Soto-Muñiz ricardo espinosa-escudero jose j.G.Marin Experimental Hepatology and Drug Targeting(HEVEFARM) IBSALUniversity of SalamancaSalamanca 37007Spain Center for the Study of Liver and Gastrointestinal Diseases(CIBERehd).Carlos III National Institute of Health Madrid 28029Spain.

Primary liver cancers constitute the fourth most deadly group of *** poor prognosis is due in part to the pre-existence and/or development,often during treatment,of powerful mechanisms accounting for the poor response of cancer cells to antitumor *** include both impaired gene expression and the appearance of spliced variants,polymorphisms and mutations,affecting the function of genes leading to the reduction in intracellular concentrations of active agents,changes in molecular targets and survival pathways,altered tumor microenvironment and phenotypic *** present review summarizes available information regarding the role of germline and somatic mutations affecting drug transporters,enzymes involved in drug metabolism,organelles and signaling molecules related to liver cancer chemoresistance.A more complete picture of the actual complexity of this problem is urgently needed for carrying out further pharmacogenomic studies aimed to improve the management of patients suffering from hepatocellular carcinoma or cholangiocarcinoma.

关键词： Anticancer drug chemoresistance chemotherapy cholangiocarcinoma germline mutation hepatoma liver cancer somatic mutation

Molecular characterization and functional analysis of two new lysozyme genes from soybean cyst nematode(Heterodera glycines)

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journal of Integrative Agriculture 2019年第12期18卷 2806-2813页

作者： WANG Ning PENG Huan LIU Shi-ming HUANG Wen-kun ricardo Holgado jihong Liu-Clarke PENG De-liang State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China NIBIO Norwegian Institute of Bioeconomy ResearchPb 115N0-1431 AsNorway

Soybean cyst nematode(SCN, Heterodera glycines(I.)) is one of the most important soil-borne pathogens for soybeans. In plant parasitic nematodes, including SCN, lysozyme plays important roles in the innate defense system. In this study, two new lysozyme genes(Hg-lys1 and Hg-lys2) from SCN were cloned and characterized. The in situ hybridization analyses indicated that the transcripts of both Hg-lys1 and Hg-lys2 accumulated in the intestine of SCN. The q RT-PCR analyses showed that both Hg-lys1 and Hg-lys2 were upregulated after SCN second stage juveniles(j2 s) were exposed to the Grampositive bacteria Bacillus thuringiensis, Bacillus subtilis or Staphylococcus aureus. Knockdown of the identified lysozyme genes by in vitro RNA interference caused a significant decrease in the survival rate of SCN. All of the obtained results indicate that lysozyme is very important in the defense system and survival of SCN.

关键词： soybean cyst nematode lysozyme Hg-lys1 Hg-lys2 innate defense against bacteria

Hygienic and Sanitary Conditions of Eggs Commercialized in Town Fairs and Markets

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Food and Nutrition Sciences 2018年第7期9卷 855-867页

作者： Wanessa Karine da Silva Lima Ludmilla Santana soares Barros ricardo Mendes da Silva Tamiles Barreto de Deus Danuza das Virgens Lima Adriana dos Santos Silva Center for Agrarian Environmental and Biological Sciences Federal University of Rec&ocirc ncavo da Bahia Cruz das Almas Brazil

High nutritional content coupled with low cost and ease of purchase justifies the frequent use of chicken eggs. Even with technological innovations in the production, storage, and distribution of eggs, food poisoning continues to occur. Therefore, in the present study, we 1) evaluated the microbiological profile and the hygienic and sanitary quality of eggs commercialized in town fairs and markets and 2) verified whether there is any correlation between microbiological results and commercialization conditions. Thirty-six samples were collected from six municipalities in the region of Rec?ncavo from Bahia, Brazil. The hygienic and sanitary conditions were analyzed by quantifying the total coliforms, E. coli, mesophilic and psychrotrophic microorganisms, molds, and yeasts, and by the presence of Salmonella sp. The observational analysis showed that 91% and 68% of the samples in town fairs and markets, respectively, did not comply with the requirements of the current Brazilian legislation. There was no significant difference in the microbiological profile among samples from the fairs and markets. Several samples presented relevant significant values, indicating inadequate hygienic conditions and fecal contamination. Salmonella sp. was found in one sample. There was co-relationship between microorganism count and the variables “external dirt”, “external stains”, and “closeness to other products”, with high concentrations of total coliforms and E. coli in the non-conforming samples. Although no limits exist for mold and yeast counts, the presence of fungi makes the product unfit for consumption. Thus, the commercialization of eggs would benefit from more attention and supervision by the relevant authorities.

关键词： Contamination Egg Salmonella Microorganism Indicator Hygiene Condition

Patogenic and Indicator Microorganisms in Chicken Cuts Sold in the Recôncavo-Bahia-Brazil

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Food and Nutrition Sciences 2017年第11期8卷 1028-1038页

作者： Wanessa Karine Da Silva Lima Ludmilla Santana soares Barros ricardo Mendes Da Silva Tamiles Barreto De Deus Adriana Dos Santos Silva Danuza Das Virgens Lima Centro de Ciências Agrárias Ambientais e Biológicas Universidade Federal do Rec&ocirc ncavo da Bahia Cruz das Almas Bahia

Hygiene-sanitary conditions, the presence of Salmonella spp. and indicator microorganisms of chicken cuts sold on the market in the Rec?ncavo da Bahia area, are analyzed and their co-relationship with conditions of commercialization is verified. Sixty samples were collected between May and August 2016 at informal selling sites (fairs, butcher shops, abattoirs) and in supermarkets of ten municipalities of the Rec?ncavo da Bahia region. Hygiene and sanitary conditions were assessed through a check list. Total coliforms, escherichia coli, mesophylls, psychrotrophic organisms, molds and yeast, and Salmonella spp. were counted. Results revealed statistical difference for total coliforms and escherichia coli only, featuring greater concentration rates in fairs, butcher shops and abattoirs. Further, 31.7% of samples indicated 31.7% Salmonella spp. and 16.6% of samples failed to comply with sanitary legislation on escherichia coli. Observational analysis demonstrated that 61.83% and 38.1% of the samples respectively on informal sites and in supermarkets did not comply with legislation and indicated a co-relationship of some variables with the growth of total coliforms, escherichia coli and mesophylls. Pathogenic and indicator microorganisms suggest flaws in hygiene and sanitary conditions in the commercialization of chicken cuts and health risks to consumers.

关键词： Microbiological Contamination Hygiene and Sanitary Conditions Salmonella Chickens