27,985 research outputs found
Lançamento da coletânea "Diálogos e práticas no campo da pesquisa qualitativa", do Grupo Sociedade e Cultura
No full text23/03/2021 - Abertura: Ana Rocha dos Santos; Maria Augusta Mundim Vargas. Palestra: Percursos teóricos metodológicos e experiências nas produções sobre lugares, gentes e saberes. Palestrante: Prof. Dr. Carlos Eduardo Santos Maia – UFG. Moderador: Daniele Luciano Santos - S&C/PPGEO/UFS. Organizador: Jorgenaldo Santos Calazans – IFS/ S&C/UFS. Administrador: Leandro Cavalcante Reis - GPTeC/UFS. Para acessar o vídeo clique na URI abaixo.São Cristóvão, S
FIGURE 5 in Two new species and a new record of Scale-worms (Polychaeta) from Southwest Atlantic deep-sea coral mounds
No full textFIGURE 5. Harmothoe gilchristi SEM of the neurochaeta. (A) Tip of lower neurochaeta; (B) Tip of middle neurochaeta; (C) Tip of upper neurochaeta (Scales bars: A, B= 10 µm; C= 20 µm).Published as part of Miranda, Vinícius Da Rocha & Brasil, Ana Claudia Dos Santos, 2014, Two new species and a new record of Scale-worms (Polychaeta) from Southwest Atlantic deep-sea coral mounds, pp. 211-226 in Zootaxa 3856 (2) on page 220, DOI: 10.11646/zootaxa.3856.2.3, http://zenodo.org/record/492987
[Mesa 6] - Agradecimentos e homenagens
No full text31/03/2021 – Mesa: Lugares, gentes e saberes nas jornadas geográficas de Maria Geralda de Almeida e Vera Lúcia Salazar Pessôa. Expositores: Marcelo Cervo Chelotti - UFSM; Valney Dias Rigonato - UFOB. Moderador: Maria Augusta Mundim Vargas - PPGEO/UFS; Organizador: Letícia Santos - GRUPAM/PPGEO/UFS; Administrador: Heberty Ruan C. Silva - GRUPAN/PPGEO/UFS.
31/03/2021 – Encerramento - Maria Augusta Mundim Vargas - PPGEO/UFS; Ana Rocha dos Santos - PPGEO/UFS; Sônia Mendoça Menezes - PPGEO/UFS; Jorgenaldo Santos Calazans - IFS/S&C/UFS; Vanessa Santos Costa - S&C/UFS. Moderador: Cícero Bezerra da Silva - S&C/PPGEO/UFS; Daniele Luciano Santos - S&C/PPGEO/UFS; Felipe Santos Silva - S&C/PPGEO/UFS. Organizador: Letícia Santos - GRUPAM/PPGEO/UFS. Para acessar o vídeo clique na URI abaixo.São Cristóvão, S
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Flowering red buglosses and Mount Teide, Tenerife, Canary Islands
No full textcover: Flowering red buglosses (Echium wildpretii, also named tajinastes rojos in Spanish) in front of Mount Teide (Tenerife, Canary Islands). Photograph by Ana M. C. Santos
Figure 1 in A new species of Ophryotrocha (Annelida: Dorvilleidae) associated with the coral Lophelia pertusa (Anthozoa: Caryophylliidae)
No full textFigure 1. Ophryotrocha zitae sp. nov.: (A) Holotype (MNRJP2601), dorsal view, stained with Shirlastain; (B) Paratype (MNRJP2602), dorsal view, unstained; (C) Prostomium of a Paratype (MNRJP2602); (D) Buccal apparatus; (E) SEM image of a compound neurochaetae from a middle segment; (F) Detail of blade from the same; (G) Juvenile paratype (MNRJP2603), dorsal view. Abbreviations: Ci = Ciliary bands, Nu = Nuchal organ, RG = Rosette glands. Scale bars: A-C = 0,5 mm; D = 250 μm; E-F = 100 μm; G = 01 mm.Published as part of Miranda, Vinicius Rocha, Rodrigues, Andrielle Raposo & Brasil, Ana Dos Santos, 2020, A new species of Ophryotrocha (Annelida: Dorvilleidae) associated with the coral Lophelia pertusa (Anthozoa: Caryophylliidae), pp. 1-8 in Papéis Avulsos de Zoologia 60 on page 3, DOI: 10.11606/1807-0205/2020.60.13, http://zenodo.org/record/387517
Figure 2 in A new species of Ophryotrocha (Annelida: Dorvilleidae) associated with the coral Lophelia pertusa (Anthozoa: Caryophylliidae)
No full textFigure 2. Ophryotrocha zitae sp. nov.: (A) K-type maxilla; (B) Adult mandible; (C) Parapodia from a middle segment; (D) Blade from upper compound chaeta from the first chaetiger; (E) Blade from lower compound chaeta from the first chaetiger; (F) Blade from upper compound chaeta from a middle chaetiger; (G) Blade from lower compound chaeta from a middle chaetiger; (H) P-type maxilla; (I) Larva paratype (MNRJP2603), dorsal view; (J) Mandible from larva. Scale bars: A = 250 μm; B = 175 μm; C = 500 μm; D-H = 200 μm; I = 600 μm; J = 120 μm.Published as part of Miranda, Vinicius Rocha, Rodrigues, Andrielle Raposo & Brasil, Ana Dos Santos, 2020, A new species of Ophryotrocha (Annelida: Dorvilleidae) associated with the coral Lophelia pertusa (Anthozoa: Caryophylliidae), pp. 1-8 in Papéis Avulsos de Zoologia 60 on page 4, DOI: 10.11606/1807-0205/2020.60.13, http://zenodo.org/record/387517
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Campo húmido at Parque Nacional da Chapada dos Veadeiros, Goiás, Brazil
No full textcover: View of a “campo húmido” (wet grassland) with some burití palm trees, taken from the Jardim de Maytrea viewpoint, Parque Nacional da Chapada dos Veadeiros, Goiás, Brazil. Picture by Ana M. C. Santos
Food and balms: combined botanical and chemical studies from funerary and domestic contexts
No full textQuesto studio consiste nell’analisi interdisciplinare di micro- e macro-resti vegetali provenienti da vari contesti archeologici e nell’identificazione dei rispettivi profili chimici. Comunemente, l’analisi di micro-resti quali granuli pollinici, fitoliti e NNPs (palinomorfi nonpollinici), e macro-resti vegetali, come semi e legni, avviene per mezzo di indagini microscopiche che permettono di riconoscere la morfologia e tassonomia della pianta di provenienza. Circa l’analisi dei residui dei materiali amorfi, la loro caratterizzazione si basa su biomarcatori, ossia molecole organiche che servono da indicatori chimici, rivelandone l'origine.
Combinando i due approcci, il materiale per la ricerca è stato selezionato basandosi sullo stato di conservazione e sulla disponibilità. Inoltre, dato che il trattamento analitico di manufatti attraverso protocolli di laboratorialo è ridotto al necessario per limitare alterazioni e garantire usi futuri a fini di ricerca o musealizzazione, i campioni sono stati preparati secondo i metodi strumentali appropriati. In rellazione alle delle esigenze specifiche del materiale analizzato, ciascun campione è stato studiato mediante la microscopia ottica, stereo-microscopia e microscopia elettronica a scansione (SEM). Per l'analisi chimica, il residuo organico visibile è stato sottoposto a spettroscopia di trasformata di Fourier a riflettanza totale attenuata non distruttiva (ATR-FT-IR) e spettrometria di massa di gascromatografia a pirolisi minimamente distruttiva (Py-GC/MS). I residui organici recuperati da vasi di ceramica, identificati come contenitori di offerte alimentari, sono stati caratterizzati mediante gascromatografia- spettrometria di massa (GC/MS). Qualora pertinente, la frazione inorganica dei campioni è stata caratterizzata mediante SEM accoppiata con spettrometria a raggi X a dispersion di energia (SEM-EDS) e d diffrattometria a raggi X (XRD). Ciascuna tecnica è stata impiegata a seconda delle esigenze diversificate di ogni caso di studio. I dati acquisiti sono stati contestualizzati alle precedenti condizioni archeologiche e ambientali, nonché dei materiali naturali disponibili, consentendo un'interpretazione completa dei resti vegetali archeologici
Differential stability of 2'F-ANA*RNA and ANA*RNA hybrid duplexes: roles of structure, pseudohydrogen bonding, hydration, ion uptake and flexibility
No full text14 pags., 7 figs., 3 tabs.Hybrids of RNA with arabinonucleic acids 2′F-ANA and ANA have very similar structures but strikingly different thermal stabilities. We now present a thorough study combining NMR and other biophysical methods together with state-of-the-art theoretical calculations on a fully modified 10-mer hybrid duplex. Comparison between the solution structure of 2′F-ANA•RNA and ANA•RNA hybrids indicates that the increased binding affinity of 2′F-ANA is related to several subtle differences, most importantly a favorable pseudohydrogen bond (2′F-purine H8) which contrasts with unfavorable 2′-OH-nucleobase steric interactions in the case of ANA. While both 2′F-ANA and ANA strands maintained conformations in the southern/eastern sugar pucker range, the 2′F-ANA strand's structure was more compatible with the A-like structure of a hybrid duplex. No dramatic differences are found in terms of relative hydration for the two hybrids, but the ANA•RNA duplex showed lower uptake of counterions than its 2′F-ANA•RNA counterpart. Finally, while the two hybrid duplexes are of similar rigidities, 2′F-ANA single strands may be more suitably preorganized for duplex formation. Thus the dramatically increased stability of 2′F-ANA•RNA and ANA•RNA duplexes is caused by differencesin at least four areas, of which structure and pseudohydrogen bonding are the most important. © The Author(s) 2010. Published by Oxford University Press.Spanish Ministerio de Ciencia e Innovacion (grants
CTQ2007-68014-C02-02 to CG and BIO2009-10964 to
MO); Fundacion Marcelino Botin (grant to MO);
Canadian Institutes for Health Research (grant to
M.J.D.); Natural Sciences and Engineering Research
Council of Canada (postgraduate scholarship to
J.K.W.). Funding for open access charge: Canadian
Institutes for Health Research
Coelindroma Kramer (Hemiptera: Cicadellidae: Neocoelidiinae) from Brazil: description of two new species and new record of C. fungosa
No full textGonçalves, Clayton Correa, Marques-Costa, Ana Paula, Ale-Rocha, Rosaly (2012): Coelindroma Kramer (Hemiptera: Cicadellidae: Neocoelidiinae) from Brazil: description of two new species and new record of C. fungosa. Zootaxa 3349: 40-47, DOI: 10.5281/zenodo.28153
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