Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 677
Primeira ... 123456789 ... Última
Imagem não selecionada

Imprime registro no formato completo
BHL, The Biodiversity Heritage Library: An Expanding International Collaboration Nature Precedings
Constance Rinaldo; Catherine Norton.
*Background/Question/Methods*
The Biodiversity Heritage Library (BHL; "http://www.biodiversitylibrary.org/":http://www.biodiversitylibrary.org/), one of the cornerstones of the Encyclopedia of Life (eol.org), now contains nearly 13 million digitized pages of 12,000 titles comprised of 32,000 volumes of the published literature of biodiversity held in the collections of major natural history libraries. The BHL has made this literature available for open access and responsible use as a part of a global “biodiversity commons.” The BHL partnership is working with the global taxonomic community, publishers, organizations such as JSTOR and BIOONE, and the Internet Archive, to ensure that the biodiversity...
Tipo: Poster Palavras-chave: Ecology; Evolutionary Biology.
Ano: 2009 URL: http://precedings.nature.com/documents/3620/version/1
Imagem não selecionada

Imprime registro no formato completo
Binding Pattern Determination Of Class of Antifungal Drugs Nature Precedings
Arpit Tandon; A Naqvi; Nitin Chitranshi; Siddharth Sinha.
Crystal Structure of cytochrome p450 2B4 has 476 amino acids, through docking approach we have attempted to explain the specificity of CYP2B4, total 28 imidazole drug were used for the studies as antifungal drugs in which bound bifonazole (reference) shows the binding energy of -8.67 kcal/mol .Compound Miconazole shows the minimum binding energy of -10.45 kcal/mol. The 2B4-bifonazole structure identified 10 residues (ALA 298, GLY 299, GLU 301, THR 302, ILE 363, VAL 292) within 6.5 Å of the active site of bifonazole. GLU 301, THR 302 are also located in 6.5 Å of the bound ligand in 2B4 structure. Due to the presence of the multiple binding substrates in cytochrome p450, it acts as the major target of many drugs in xenobiotic...
Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2010 URL: http://precedings.nature.com/documents/4314/version/1
Imagem não selecionada

Imprime registro no formato completo
BioCatalogue: A Curated Web Service Registry For The Life Science Community Nature Precedings
Carole A. Goble; Khalid Belhajjame; Franck Tanoh; Jiten Bhagat; Katy Wolstencroft; Robert Stevens; Eric Nzuobontane; Hamish McWilliam; Thomas Laurent; Rodrigo Lopez.
Web Services have gained a momentum as a means for packaging existing data and computational resources in a form that is amenable for use and composition by third party applications. The life science community is certainly among the first adopters of Web Services. For example, "Taverna":http://www.mygrid.org.uk, a workflow workbench that is popular within the life science community, provides access to over 3500 thousands web services that can be composed by scientists for constructing and enacting their _in silico_ experiments. However, one of the main issues that hinders the wide adoption and use of Web Services is the difficulty in locating the “appropriate” Web Service, i.e., the Web Service that performs the...
Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2009 URL: http://precedings.nature.com/documents/3132/version/1
Imagem não selecionada

Imprime registro no formato completo
Bioconversion of eugenol into food flavouring agent vanillin Nature Precedings
Suaib Luqman; Sudeep Tandon; Alok Somvanshi; Suchita Srivastava; Mahendra P. Darokar; Suman P. S. Khanuja.
Microorganisms have the ability to chemically modify a wide variety of organic compounds by a process referred to as biological or microbial transformation, or in general, bioconversion. The microbial cells and their catalytic machinery (enzymes) accept a wide array of complex molecules as substrates, yielding products with unparallel chiral (enantio-), positional (region-) and chemical (chemo-) selectivity through various biochemical reactions. The present study was formulated on the objective of the conversion of abundantly available phytomolecules eugenol into vanillin, a compound of industrial importance, using microorganisms Aspergillus flavus, Aspergillus niger and Pseudomonas aeruginosa. These microbes were found to be capable of converting eugenol...
Tipo: Poster Palavras-chave: Biotechnology; Microbiology; Molecular Cell Biology; Pharmacology.
Ano: 2012 URL: http://precedings.nature.com/documents/6926/version/1
Imagem não selecionada

Imprime registro no formato completo
Bioinformatic approaches for the genetic and phenotypic characterization of a Saccharomyces cerevisiae wine yeast collection Nature Precedings
Ricardo Franco-Duarte; Lan Umek; Blaz Zupan; Dorit Schuller.
The objective of the present study was to compare genetic and phenotypic variation of 103 Saccharomyces cerevisiae strains isolated from winemaking environments. We used bioinformatics approaches to identify genetically similary strains with specific phenotypes and to estimate a strain's biotechnological potential. 
A S. cerevisiae collection, comprising 440 strains that were obtained from winemaking environments in Portugal has been constituted during the last years. All strains were genetically characterized by a set of eleven highly polymorphic microsatellites and showed unique allelic combinations. Using neural networks, a subset of 103 genetically most diverse strains was chosen for phenotypic analysis, that included growth...
Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2008 URL: http://precedings.nature.com/documents/2288/version/1
Imagem não selecionada

Imprime registro no formato completo
Biological networks and epistasis in genome-wide association studies Nature Precedings
Mathieu Emily; Leif Schauser; Thomas Mailund; Mikkel H. Schierup.
Over the last few years, technological improvements have made possible the genotyping of hundreds of thousands of SNPs, enabling whole-genome association studies. The first genome-wide association studies have recently been completed to detect causal variant for complex traits. Although increasing evidence suggests that interaction between loci, such as epistasis between two loci, should be considered, most of these studies proceed by considering each SNP independently. One reason for this choice is that looking at all pairs of SNPs increases dramatically the number of tests (approximatively 50 billions of tests for a 300,000 SNPs data set) that faces with computational limitation and strong multiple testing correction.
We proposed to...
Tipo: Poster Palavras-chave: Genetics & Genomics; Bioinformatics.
Ano: 2007 URL: http://precedings.nature.com/documents/466/version/1
Imagem não selecionada

Imprime registro no formato completo
BioModels Database: curation and annotation Nature Precedings
Michael Schubert; Ishan Ajmera; Vijayalakshmi Chelliah; Lukas Endler; Nicolas Rodriguez; Camille Laibe; Nicolas Le Novère.
The BioModels Database is a freely accessible online resource for storing, viewing, retrieving, and analyzing published, peer-reviewed quantitative models of biological processes.

In this poster we provide an overview of its capabilities, as well as the curation and annotation process with two use cases concerning blood coagulation and glucose homeostasis.
Tipo: Poster Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011 URL: http://precedings.nature.com/documents/6361/version/1
Imagem não selecionada

Imprime registro no formato completo
Biopax and Semantics Nature Precedings
Ismael Navas-Delgado; Maria Jesús García-Godoy; Maria del Mar Roldán-García; José F. Aldana-Montes.
Biopax community is producing sets of data in RDF files, but most of them are not available through query interfaces. The publication of SPARQL endpoints is feasible with current sets of data, but the use of reasoning in these interfaces is unfeasible in many cases. The use of large scale reasoners is a need to take advantage of these data sets.
Tipo: Poster Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011 URL: http://precedings.nature.com/documents/6320/version/1
Imagem não selecionada

Imprime registro no formato completo
Biophysical Effects Of Ion Concenteration On The Affinity Between Nanopore, OmpF Lumen and Passing Nucleotide Nature Precedings
Saeid Hadi; Hamid Mobasheri.
OmpF an outer-membrane porin channel of _E. Coli_ posses beta-barrel structure, whose conductivity and gating phenomena are affected by changes in pH, salt concentration and so on. The distribution of amino acids in OmpF induces a non homologous electric potential in channel lumen. The intrinsic charge distribution caused be amino acid may be affected by lipid bilayer, extra and intra cellular ion concentration, and other physico-chemical condition of environment including, pH, temperature, polyelectrolytes etc. Nucleotides are considered as one of most important metabolite in the cell that have pass through membrane whenever necessary. The experimental study of translocation of such a molecules through channels have provided invaluable information...
Tipo: Poster Palavras-chave: Molecular Cell Biology.
Ano: 2010 URL: http://precedings.nature.com/documents/5101/version/1
Imagem não selecionada

Imprime registro no formato completo
Biophysical visual virtual reality in retinotopic visual areas Nature Precedings
István Bókkon; Jack Tuszynski; Vahid Salari.
Previously, we have pointed out that biophoton production can be a controlled process that originates from regulated redox/radical reactions. Our biophoton experiments support the notion that various visual related phenomena such as discrete retinal noise, retinal phosphenes as well as negative afterimages are due to biophotons. We have also suggested a new model, stating that the brain is able to create biophysical pictures in retinotopic visual areas via redox regulated biophotons of synchronized neurons. According to our interpretation, visualization (imagery) is a special kind of representation i.e., visual imagery requires peculiar inherent biophysical processes. Our idea of biophysical visual virtual reality in retinotopic areas may be a possible...
Tipo: Poster Palavras-chave: Neuroscience.
Ano: 2011 URL: http://precedings.nature.com/documents/6051/version/1
Imagem não selecionada

Imprime registro no formato completo
BioPortal: Ontologies and Integrated Data Resources at the Click of a Mouse Nature Precedings
Patricia L. Whetzel; Nigam H. Shah; Natalya F. Noy; Benjamin Dai; Michael Dorf; Nicholas Griffith; Clement Jonquet; Cherie Youn; Adrien Coulet; Chris Callendar; Daniel L. Rubin; Barry Smith; Margaret-Anne Storey; Christopher G. Chute; Mark A. Musen.
BioPortal ("http://bioportal.bioontology.org":http://bioportal.bioontology.org) is an open repository of biomedical ontologies that provides programmatic and web-based access to ontologies developed in OBO, OWL, Protégé frames, and RDF. Features include browsing, searching, and visualization of ontologies. Searching of integrated data resources is also possible through ontology-based indexing of biomedical resources with BioPortal ontologies. 

Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2009 URL: http://precedings.nature.com/documents/3868/version/1
Imagem não selecionada

Imprime registro no formato completo
BioSharing Overview Nature Precedings
Susanna-Assunta Sansone; Dawn Field; Annapaola Santarsiero; Eamonn Maguire; Philippe Rocca-Serra; Chris Taylor; Lee Harland; The BioSharing Communities.
Download this poster providing an overview of the BioSharing effort.
Tipo: Poster Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011 URL: http://precedings.nature.com/documents/5936/version/1
Imagem não selecionada

Imprime registro no formato completo
Biotransformation of artemisinin mediated through fungal strains for obtaining derivatives with novel activities Nature Precedings
Suchita Srivastava; Suaib Luqman; Atiya Fatima; Mahendra P. Darokar; Arvind S. Negi; J K. Kumar; Karuna Shanker; Chandan S. Chanotiya; Sudeep Tandon; Suman P. S. Khanuja.
Artemisinin, a sesquiterpene lactone, is the active antimalarial constituent of Artemisia annua. Several fungal strains Saccharomyces cerevisiae, Aspergillus flavus, Aspergillus niger and Picchia pastoris were used to biotransform artemisinin. Among these strains, A. flavus was the only microorganism capable of transforming artemisinin to deoxyartemisinin in higher yields than the previous reports. The structure of deoxyartemisinin was elucidated by spectroscopy. Deoxyartemisinin showed antibacterial activity against Staphylococcus aureus, S. epidermidis and S. mutans at a minimum inhibitory concentration (MIC) of 1 mg/mL compared to artemisinin whose MIC was >2 mg/mL.
Tipo: Poster Palavras-chave: Biotechnology; Chemistry; Microbiology; Molecular Cell Biology; Pharmacology.
Ano: 2012 URL: http://precedings.nature.com/documents/6925/version/1
Imagem não selecionada

Imprime registro no formato completo
Bird surveys for REDD+: avian communities indicate forest degradation in a Peruvian coffee landscape Nature Precedings
Raf Aerts; Sarah Spranghers; Bruno Verbist; Luc Lens; Cagan Sekercioglu.
Shade coffee cultivation in the Peruvian Andes assists in reducing emissions from deforestation because it avoids conversion to non-forest land uses such as coca and sun grown coffee farming. REDD+ is a potential finance mechanism which may provide incentives for local coffee cooperatives to maintain high shade tree cover. REDD+ has potential multiple benefits other than carbon sequestration, including the conservation of biodiversity. When monitoring for REDD+, surveys of bird biodiversity may prove to be particularly valuable: apart from their high intrinsic value and their value as essential ecosystem service providers, birds inhabiting forest habitats are extremely sensitive to forest loss and forest degradation and are therefore potential useful...
Tipo: Poster Palavras-chave: Ecology; Earth & Environment.
Ano: 2011 URL: http://precedings.nature.com/documents/6589/version/1
Imagem não selecionada

Imprime registro no formato completo
Birth Control Does Not Significantly Alter Women’s Preferences for Variants of Men’s Voices Nature Precedings
Jason W. J. W. W. Whitaker; Ryan R. S. Setten; Ulv U. A. Ankerstjerne.
Research shows that women‘s preferences for masculine voices (low pitch) vary as a function of the menstrual cycle, becoming positively augmented around ovulation. The proximate cause catalyzing this effect is attributed to fluctuating estrogen levels. Thus, the introduction of hormonally based birth control has been to shown to have a dampening effect in experiments researching women‘s preference of dimorphic secondary sexual characteristics. However, this dampening effect has not yet been explored in respect to women‘s preferences for masculine voice types. This experiment sought, first, to investigate the effect of birth control on subjects off and on birth control; and, second, to replicate past findings:...
Tipo: Poster Palavras-chave: Evolutionary Biology.
Ano: 2011 URL: http://precedings.nature.com/documents/5895/version/1
Imagem não selecionada

Imprime registro no formato completo
Bottom-up and top-down effects on algal community dynamics in an aridland river: the Middle Rio Grande, New Mexico Nature Precedings
Ayesha S. Burdett; Rebecca J. Bixby.
Background/Question/Methods

In this study, we examined interactive effects of nutrient availability, river flow and food web structure on algal growth and species composition in the Middle Rio Grande, New Mexico. Algal community dynamics can be affected by both bottom-up and top-down factors. Algal production may be limited by low levels of nutrients or low light availability. Conversely, production is expected to increase when nutrient levels are high and light availability is not limited. Top-down factors such as grazing by invertebrates can also alter periphyton growth and community composition. Generally, a reduction in grazers results in periphyton biomass increases and shifts in growth forms (to more upright...
Tipo: Poster Palavras-chave: Ecology.
Ano: 2009 URL: http://precedings.nature.com/documents/3664/version/1
Imagem não selecionada

Imprime registro no formato completo
BRAGOMAP - a new Perl script for high throughoutput blast results analysis including GO and MapMan automatic annotations Nature Precedings
Rafal Woycicki; Wojciech Gutman; Zbigniew Przybecki.
Analyzing of sequences similarities is the first and most important method used to find out the function of unknown nucleotides. Searching of homologs should be done carefully not to loose any important ones. Having thousands of results from various long-read sequencing projects (ie. differentially expressed tags, genomic polymorphons or BAC ends), the by-hand ability to retrieve interesting (to our goal) similarities in hundreds of Blast results decreases rapidly. Decreasing the number of retrieved sequences by giving more stringency in e-value threshold or displaying less results could lead to false deductions. Functional genomics, proteomics and metabolomics could give us answers to the role of nucleotide sequences. It makes the need to annotate as much...
Tipo: Poster Palavras-chave: Genetics & Genomics; Bioinformatics; Plant Biology.
Ano: 2009 URL: http://precedings.nature.com/documents/3900/version/1
Imagem não selecionada

Imprime registro no formato completo
Breeding of cucumber (Cucumis sativus) for resistance to multiple diseases and other traits National Institute of Agronomic Research
Kushnereva, V..
The most effective and straightforward way of plant protection is the production of cucumber hybrids with resistance to multiple diseases. Therefore, breeding of cucumber hybrids with a combination of defensive traits is a major objective. The accurate choice of parental lines is the first step towards development of successful hybrids. A variety of methods were used in order to speed up the process of inbred line development: a range of various planting times, planting in greenhouses and hot beds, screening of germplasm for disease resistances under artificial inoculation as well as natural field conditions, high selection pressure, backcrossing, multi-stage hybridization. As a result, we have developed cucumber lines and hybrids combining complex...
Tipo: Poster Palavras-chave: Cucumber; Cucumis sativus; Podosphaera xanthii; Cladosporium cucumerinum; Pseudomonas lachrymans; Parthenocarpy; Gynoecy; Resistance; Breeding.
Ano: 2008 URL: http://hdl.handle.net/2174/275
Imagem não selecionada

Imprime registro no formato completo
BridgeDb: standardized access to gene, protein and metabolite identifier mapping services Nature Precedings
Martijn P. van Iersel; Alexander R. Pico; Thomas Kelder; Jianjiong Gao; Isaac Ho; Kristina Hanspers; Bruce R. Conklin; Chris T. A. Evelo.
Many interesting problems in bioinformatics require integration of data from various sources. For example when combining microarray data with a pathway database, or merging co-citation networks with protein-protein interaction networks. Invariably this leads to an identifier mapping problem, where different datasets are annotated with identifiers that are related, but originate from different databases.

Solutions for the identifier mapping problem exist, such as Biomart, Synergizer, Cronos, PICR, HMS and many more. This creates an opportunity for bioinformatics tool developers. Tools can be made to flexibly support multiple mapping services or mapping services could be combined to get broader coverage. This approach...
Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2010 URL: http://precedings.nature.com/documents/5023/version/1
Imagem não selecionada

Imprime registro no formato completo
Broadening Pfam Protein Sequence Annotations Nature Precedings
Jaina Mistry; Penny Cogghill; Sean Eddy; Rob Finn; John Tate; Alex Bateman.
Pfam is a database of conserved protein families or domains commonly used for genome annotation and sequence classification. It comprises two parts: (1) Pfam-A families, which are fully annotated and consist of a representative seed alignment, HMMs, and a full alignment comprising all sequences that score above the curated threshold; (2) Pfam-B families, which are automatically generated clusters of domains not matched by Pfam-A but that often indicate conserved sequence regions. Pfam release 23.0 predicts at least one Pfam-A domain on 74% of the sequences in UniProtKB, and predicts either a Pfam-A or Pfam-B domain on 93% of the sequences in UniProtKB.

With the ever increasing rate of deposition of new proteins of all...
Tipo: Poster Palavras-chave: Bioinformatics.
Ano: 2009 URL: http://precedings.nature.com/documents/3194/version/1
Registros recuperados: 677
Primeira ... 123456789 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional