263,860 research outputs found
Gabriela M. Silva
No full textabstract: Birth Story
Creative Push is a multimedia visual art and oral history project that focuses on the most formative of human experiences: birth. Creative Push is a means to collect, transform, display, and circulate birth stories and artworks.Theme:
Storyteller: Gabriela Maria Silva
Age: 52, Date of Delivery: 03/14/05
Ethnicity: Hispani
Contribuciones a la Lingüística y a la Comunicación Social. Tributo a Vitelio Ruiz Hernández
No full textEn el volumen se reúnen distintos trabajos relacionados con la Adquisición del español como lengua primera (L1), el Análisis del discurso, la Antropología lingüística, el Español como lengua extranjera (ELE), el Español como segunda lengua (EL2), la Fonética, la Fonología, las Humanidades digitales, la Lexicografía, la Lexicología, la Lingüística computacional, la Lingüística de corpus, etc
Silva, M A, NX3024
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/416853Surname: SILVA. Given Name(s) or Initials: M A. Military Service Number or Last Known Location: NX3024. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 9384.239210
Item: [2016.0049.49114] "Silva, M A, NX3024
Musschia isambertoi M. Seq., R. Jardim, M. Silva & L. Carvalho (Campanulaceae), a new species from the Madeira Archipelago (Portugal).
No full textA new species of Musschia Dumort. (Campanulaceae), endemic from Madeira Archipelago (Portugal), is described as Musschia isambertoi M. Seq., R. Jardim, M. Silva & L. Carvalho. Both vegetative and reproductive structures have been studied and are remarkably distinct from the recognized species [M. aurea (L. f.) Dumort. and M. wollastonii Lowe]. A full description and a diagnosis are included as well as line art, color drawings and pictures. Diagnostic characters are discussed and compared with those of the closely related species. The new species has a very restricted distribution occurring in two isolated populations in the Deserta Grande Island (Madeira Archipelago, Portugal). Nomenclatural aspects on the genus Musschia Dumort. are discussed and a diagnostic key for the species is also includedSe describe una nueva especie de Musschia Dumort. (Campanulaceae), endémica del archipiélago de Madeira (Portugal), Musschia isambertoi M. Seq., R. Jardim, M. Silva & L. Carvalho. La morfología de las estructuras vegetativas y florales estudiadas es claramente distinta de la de las otras dos especies conocidas, Musschia aurea (L. f) Dumort. y Musschia wollastonii Lowe. Se incluyen: una descripción y una diagnosis, ilustradas por imágenes, una lámina en blanco y negro y una en color. Se comparan y discuten los caracteres diagnósticos dentro del conjunto de especies del género. La nueva especie es endémica de la isla Deserta Grande (archipiélago de Madeira, Portugal). Se discuten aspectos nomenclaturales y se incluye una clave de las especies conocidas para Madeira
Obras poeticas de Manoel Ignacio da Silva Alvarenga, (Alcindo Palmireno)
No full textSilva Alvarenga foi uma das figuras mais importantes da poesia brasileira do Arcadismo. Sua obra tem caráter nacionalista, exalta a natureza e propõe um modelo de poesia lírica de sabor quase popular. É considerado o precursor do Romantismo no Brasil. Esta obra, em dois volumes, contém juízos críticos de Simonde de Sismondi, Adrien Balbi, Januario da Cunha Barbosa, J. M. da Costa e Silva, J. M. Pereira da Silva e J. C. Fernandes Pinheiro, biografia de Silva Alvarenga e noticia sobre suas obras, além dos autos da devassa sofrida pelo autor, quando esteve preso a mando do Vice-Rei, Conde de Resende, sob a acusação de conspirar contra a Coroa Portuguesa e a Igreja Católica.Collegidas, annotadas e precedidas do juizo critico dos escriptores nacionaes e estrangeiros e de uma noticia sobre o auctor e suas obras e acompanhadas de documentos historicos por J. Norberto de Souza S
Ruellia scarlatina M. J. Silva. A. Flowering 2022, nom. nov.
No full textRuellia scarlatina M.J. Silva, nom. nov. (Figure 1). = Ruellia capitata Rizzini (1956: 156.) nom. illeg., non Ruellia capitata Buchanan-Hamilton ex D. Don. (1825: 120). Type:— BRAZIL. Goiás: Niquelândia, 26 July 1952, fl., localidade do Macedo, A. Macedo 3677 (holotype RB 78758!; isotypes NY930506! S09-8233!, SP 84553!, US 2059785!, US 2197176!). Description:—Shrub or subshrub, erect, 0.7–1.8 m tall; stems subcylindrical at base and subquadrangular distally, green with brown spots, glabrous, few or non-branched on upper third; internodes 1.5–4.6 cm long, slightly dilated above the nodes. Leaves opposite decussate, membranaceous; petiole 6–7 mm long; leaf blade11–12 × 1.9–4.2 cm, narrowly elliptic, elliptic or oblong-elliptic, base attenuated, apex acuminate, margins entire, sparsely scabridulous with glandular-sessile trichomes on both surfaces, the scabridulous trichomes denser on the veins, adaxial surface dark green, abaxial surface opaque green, venation camptodromous-brochidodromous, secondary veins 8–10 per side, curved at apex, impressed on adaxial surface, prominent on abaxial surface, tertiary veins perpendicular to the secondary ones, impressed on both surfaces; cystoliths conspicuous on both surfaces. Thyrses glomeruliform, four-sided, 3–5 cm long, terminal, congested, sessile; bracts 3.9–5.5 × 0.4–0.6 cm, lanceolate, lance-elliptic, margins ciliate, apex acute, similar tonormal leaves in terms of indumentum, sessile; bracteoles 2.4–2.7 × 1.1–1.3 cm, widely ovate, pubescent and glandular-capitate on both surfaces, margins entire, apex acute, conspicuously nerved, sessile. Flowers 5.2–5.3 cm long; calyx 2.2–2.3 cm long, with glandular and pubescent trichomes on both surfaces, 5-lobed, lobes 2.2–2.5 × 0.49–0.51 cm, subequal, lanceolate, foliaceous, margins entire, apex obtuse; corolla 4.9–5 cm long, infundibuliform, scarlet-red, glandular-capitate externally, tube 2.6–2.7 cm long, the throat 2–2.3 cm long, subcylindrical, lobes 1.4–1.5 × 1–1.1 cm, slightly curved and spreading, ovate or ovate-elliptic, apex obtuse, rounded or emarginate; stamens 4, weakly didynamous, exserted, filaments inserted ca. 2.6 cm above the base of the corolla, sparsely hirsute-glandular, the shorter pair ca. 3.4 mm long, the longer pair ca. 3.5 mm long, anthers 5.8–6 mm long, dorsifixed, sagittate, mucronulate; ovary 4.2–4.3 × 1.3–1.7 mm, oblongoid or oblong-obovoid, densely and shortly hispid, styles 5.3–6.3 cm long, hispid, stigma bilobed, asymmetrical, nectar disc annular. Capsules 1.5–1.6 × ca. 0.5 cm, clavate, shortly acuminate, green when immature and cream-colored when mature, dense and short-tomentose; retinacula 2.9–3 mm long; calyx persistent and larger than the fruits. Seeds 7-8, 4.7–4.8 × ca. 4.8 mm, orbicular, light brown, apex obtuse, margins slightly whitish, with hygroscopic trichomes covering the entire surface. Phenology:—Collected with flowers in June, and with flowers and fruits in August and September. Distribution and ecology: —Endemic to Goiás State, Brazil, and collected so far in mountainous areas in the municipality of Niquelândia (Figure 2). It grows in “cerrados densos”, “brejos”, edges of “florestas estacionais” or “florestas de galeria” on clayey and stony soils between 758 and 818 m. a.s.l. Etymology:—The specific epithet “scarlatina” alludes to its scarlet-red corolla. Additional specimens examined:— BRAZIL. Goiás: Niquelândia, ca. 2 km da estrada para Macêdo Velho, 14°21’03”S, 48°24’52’’W, 29 August 1995, fl., M. L. Fonseca, R. Marquete & F. C. A. Oliveira 431 (IBGE, US); ibd., junto a cidade, Morro do Cristo, 14°27’08”S, 48°27’26’’W, 19 September 1996, fl. fr., 29 August 1995, fl., M. Aparecida da Silva & C.C. S. Ferreira 3145 (US, IBGE); ibd., rodovia Niquelândia-Votoratim Metais (BR 535), cerca de 3, 4 km do trevo de Niquelândia, margens da rodovia, 14°26’08”S, 48°26’34.6”W, 818 m. a.s.l., 07 September 2013, fl., Pirani, J.R. et al. 6494 (K, RB, SPF, UB); ibd., 2.3 km N of Niquelândia on GO-535, in route to Macêdo Velho, measured from traffic circle leaving town, 14°42’02”S, 48°29’02”W, 20 August 2016, fl., fr., Erin Tripp & Nicolás Medina 5968 (NY, COLO); ibd., cerca de 3, 5 km antes de chegar a Vila Macedo, cerrado denso, 14°23’53”S, 48°25’58”W, 29 August 2019, fl., fr., M. J. Silva & A. A. Alonso 9887 (UFG); ibd., GO 535 em direção a Vila Macedo, cerca de 200 metros acima da bica, 14°27’03”S, 48°26’46”W, 758 m. a.s.l., 24 June 2021, fl., M. J. Silva & I. S. Santos 12860 (UFG), M. J. Silva & I. S. Santos 12861 (UFG), M. J. Silva & I. S. Santos 128602 (UFG), M. J. Silva & I. S. Santos 12863 (UFG). Preliminary conservation status:—Species classified as Critically Endangered (CR), Criterion B1 subcriteria v, vi., E vii, due to having an estimated Extent of Occurrence of 47,561 Km 2. It forms populations of less than 20 adults plants and grows in areas under strong anthropogenic pressure such as roadsides, but also in mountainous areas, inappropriate for agricultural practices or civil construction. Morphological relationships and systematic position:— Ruellia scarlatina can be recognized by its subshrubby or shrubby habit, glabrous stems, glomeruliform and congested thyrses, with ovate or ovate-elliptic bracteoles, densely covered by glandular trichomes on both sides, flowers with calyx deeply divided into 5 lobes, corolla infundibuliform, scarlet-red, with external glandular trichomes and broad lobes, ovate or ovate-elliptic, stamens weakly didynamous, gynoecium shortly hispid, with clavate capsules with 7 or 8 orbicular seeds completely covered by hygroscopic hairs. According to Ezcurra (1993), due to its red corolla, Ruellia scarlatina could be included in the informal group Physiruellia, which, according to that author, is represented in South America by six species [R. elegans Poiret (1816: 727), R. reitzii Wasshausen & Smith (1969: 60), R. brevifolia (Pohl 1831: 155) Ezcurra (1989: 278), R. angustiflora Ness (1847: 51) Lindau ex Rambo (1964: 23), R. sanguinea Grisebach (1879: 260) and R. longipedunculata Lindau (1895:365)]. Tripp (2007), in a phylogenetic study of Ruellia, recovered the species placed by Ezcurra (1993) into the informal group Physiruelliain the “Physiruellia clade”, which, according to that author, included plants generally with dichasia simple or compound, profusely branched, and often long-pedunculate, flowers subtended by paired bracteoles, corolla often inflated,ovary with 8-14 ovules,capsules clavate,and seeds with hydroscopic trichomes only on their margins. The species of this clade, according to that author, were previously placed in the sections Ruellia and Physiruellia by Lindau (1895). Fernandes et al. (2020) cited six species of Ruellia with red flowers in Goiás State [R. adenocalyx Lindau (1898: 46), R. amplexicaulis (Nees 1847: 59) Lindau (1895: 311), R. angustior (Nees1847: 34) Lindau (1898: 46), R. brevifolia (Pohl 1831: 84) Ezcurra (1989: 278), R. densa (Nees 1847: 47) Hieronymus (1878: 74), and R. elegans Poiret (1816: 727)]. Although R. scarlatina shares red flowers with them, it cannot easily be confused with any of them because of leaf peculiarities (shape, apex, aspects of the trichomes, venation pattern), the type of inflorescence, and capsules, and the number of seeds per capsule, as evidenced in the key below.Published as part of Silva, Marcos José Da, 2022, Ruellia scarlatina, a new name for the sixty-year-old but misunderstood Ruellia capitata Rizzini (Acanthaceae), pp. 55-65 in Phytotaxa 547 (1) on pages 57-60, DOI: 10.11646/phytotaxa.547.1.5, http://zenodo.org/record/655593
Justicia pusilla M. J. Silva. A. Habit 2021, sp. nov.
No full text<i>Justicia pusilla</i> M.J. Silva, <i>sp. nov.</i> <p> Type:— BRAZIL. Goiás: Goiás: Niquelândia, Reserva particular de Desenvolvimento Sustentável Legado Verdes do Cerrado, Núcleo Engenho, Córrego da Sociedade, ca. 150 m a partir do Corrégo, mata ciliar, crescendo em barranco e sobre rochas em ambiente sombreado, 14°38’35”S 48°28’34”W, 629 m elev., 23 June 2021, fl., fr., <i>M. J. Silva & I. S. Santos 12685</i> (holotype UFG!; isotypes: UB!, RB!, CEN!)</p> <p> <b>Diagnosis:</b> —This new species is most similar to <i>J. laevilingui</i> s Ness (1847: 120), but differs by having an erect habit (<i>vs</i>. procumbent or decumbent), leaves indumented on both surfaces (<i>vs.</i> glabrous), spikes always simple (<i>vs.</i> simples or paniculiform), fertile bracts indumented and ciliate (<i>vs.</i> glabrous and non-ciliate), bracteoles ciliate (<i>vs.</i> nonciliate), calyx lobes 3–4 mm long, indumented externally (<i>vs.</i> 7–8 mm long, glabrous), corolla 5–5.1 mm long, white with a lilac spot on the palate, or uniformly white, shortly pubescent internally in the central region (<i>vs.</i> 11–18 mm long, lilac, with a white spot on the palate, glabrous internally), and seeds suborbicular and hispidulous (<i>vs.</i> cordiform, glabrous).</p> <p> <b>Description</b> —Herbs or subshrubs 5–28 cm tall; stems erect, cylindrical, non-dilated or constricted above the nodes, uniformly tomentose and shortly hispid, trichomes hyaline. Leaves slightly anisophyllous, petiolate; petiole 0.2–0.5 cm long, shortly tomentose, slightly sulcate above; blades 2.6–7.5 × 0.5–1.3 cm, elliptic, narrowly elliptic, elliptic-obovate, spatulate, or sometimes lanceolate, pubescent on both surfaces, especially on the veins on the abaxial surface, base attenuated or slightly asymmetrical, margin entire or more rarely irregularly crenate near the apex, sparsely ciliate, apex acute, acuminate or obtuse, cystoliths inconspicuous, dark green adaxially, opaque green abaxially, midrib prominent abaxially, secondary veins 5–7 pairs, the tertiary veins impressed on both surfaces. Spikes simple, terminal, lax and congested; peduncles (2) 3–4 cm long, rachis (2.2) 4.5–6 cm long, both shortly tomentose; sterile bracts 4.5–4.8 × 0.6–0.7 mm, sessile, elliptic, oblanceolate, base attenuated, apex acuminate, ciliate, sparsely shortly hirsute on both surfaces, trichomes eglandular; bracteoles 3.5–6 × 0.2–0.25 mm, sessile, linear, apex acute, glabrous on both surfaces, ciliate; calyxes green, 5-lobed; lobes equal, 3.8–4 × ca. 0.2 mm, linear, glabrous internally and pubescent externally, trichomes eglandular, margins sparsely ciliate. Corolla bilabiate, tube and lips white or lips white, with a lilac spot on the palate, 5–5.1 mm long, tube ca. 1.1 mm long at base, central region 1.9–2 mm long, pubescent above the stamens and near the lobes, upper lip 2.3–2.4 × 1.27–1.4 mm, entire, lower lip ca. 2.3 mm long, 3-lobed, lobes oblong or obtuse, central lobe 2–2.1 × 1.2 mm, lateral lobes 1.1–1.2 × 0.9–1.2 mm; stamens 2, filaments white, attached near the upper portion of corolla tube, free portion of the filaments 2–2.1 mm long, pubescent at base, connectives not elongated, thecae whitish, superposed, upper thecae ca. 0.5 mm long, lower portion 0.3 mm long, both without appendages; connectives narrow; ovary oblong ca. 1 × 0.3 mm, glabrous, style ca. 4 mm long, stigma obtuse. Capsule ca. 4 × 1.2 mm, clavate, light green, puberulous with eglandular trichomes. Seeds 4, ca. 0.7 × 0.7 mm, suborbicular, compressed, not cordate, surface smooth, hispidulous, base slightly asymmetric, brownish.</p> <p> <b> Additional specimens examined (paratypes): <i>—</i></b> BRAZIL. Goiás: Niquelândia, Reserva Particular de Desenvolvimento Sustentável Legado Verdes do Cerrado, Núcleo Engenho, Área do Córrego dos Macacos, 14°38’34”S 48°28’34”W, 656 m elev., cerca de 50 m à esquerda da Ponte do Córrego dos Macacos, 23 April 2021, fl., <i>M. J. Silva & F.D. Santos 12371</i> (UFG), <i>12372</i> (UFG), <i>12377</i> (UFG); ibd., 14°38’33”S 48°28’40”W, 657 m elev., cerca de 5 m à esquerda da Ponte do Córrego dos Macacos crescendo sobre barranco, trecho sombreado, 22 April 2021, fl., <i>M. J. Silva & F.D. Santos 12306</i> (UFG), <i>12307</i> (UFG), <i>12308</i> (UFG), <i>12309</i> (UFG), <i>12310</i> (UFG); ibd., mata de galeria na borda da vegetação em ambiente sobreado, ca. 15 m à erquerda da ponte, 14°39’45”S 48°27’33”W, 716 m elev., 28 May 2021, fl., <i>M. J. Silva & F.D. Santos 12500</i> (UFG), <i>12501</i> (UFG); ibd., área do Córrego da Sociedade, cerca de 10 m à esquerda da ponte do Córrego, 14°38’34”S 48°28’’39”W, 667 m elev., 28 May 2021, fl., <i>M. J. Silva & F.D. Santos 12503</i> (UFG), <i>12504</i> (UFG); ibd., ca. 150 m a partir do Córrego Sociedade, 14°38’35”S 48°28’34”W, 629 m elev., 23 June 2021, fl., fr., <i>M. J. Silva 12680</i> (UFG), <i>M. J. Silva 12681</i> (UFG), <i>M. J. Silva 12682</i> (UFG), <i>M. J. Silva 12683</i> (UFG), <i>M. J. Silva 12684</i> (UFG), <i>M. J. Silva 12686</i> (UFG), <i>M. J. Silva 12687</i> (UFG), <i>M. J. Silva 12688</i> (UFG), <i>M. J. Silva 12689</i> (UFG), <i>M. J. Silva 12690</i> (UFG); ibd., Córrego do Padre, ca. 10 m a partir da ponte do corrégo do lado esquerdo, 14°38’18”S 48°28’52”W, 657 m elev., 28 May 2021, fl., <i>M. J. Silva & F.D. Santos 12506</i> (UFG), <i>12514</i> (UFG); ibd., Córrego do Padre, ca. 20 m a partir da ponte do córrego do lado esquerdo, 14°38’19”S 48°28’52”W, 650 m elev., 29 May 2021, fl., <i>M. J. Silva & F.D. Santos 12587</i> (UFG), <i>12588</i> (UFG), <i>12589</i> (UFG), <i>12590</i> (UFG); Região do Traíras, cerca de 80 ma partir da trilha do Rio Traíras em barranco, 14°36’31”S, 48°28’42”W, 644 m elev., 29 May 2021, fl., <i>M. J. Silva & F.D. Santos 12532</i> (UFG).</p> <p> <b>Distribution and habitat:</b> —Species previously collected only in the Legado Verdes do Cerrado Private Sustainable Development Reserve, municipality of Niquelândia, Goiás State, Brazil, in “Córregos dos Macacos”, “Padre”, and “Sociedade”, as well as along the banks of the Traíras River. <i>Justicia pusilla</i> grows in ravines, on rock outcrops, in aquatic environments, in periodically flooded sites, and in shaded areas at 600– 750 m.a.s.l. It forms populations with up to 30 individuals.</p> <p> <b>Phenology:</b> —Species collected with flowers from April to May and with flowers and fruits in May.</p> <p> <b>Etymology</b> —The specific epithet “ <i>pusilla</i> ” is derived from the Latin “ <i>pusillus</i> ”, alluding to the small size of the species as compared to congeners.</p> <p> <b>Preliminary conservation status:</b> — Species with an Extent of Occurrence estimated at 4.377 km 2, which is therefore classified as Critically Endangered (CR) Criteria B 1 subcriteria b(i, iv, v), and criteria D. It was collected, however, in gallery forests, a very common vegetation type in the northern part of Goiás State, and later exploratory collections may reveal new sites of occurrence.</p> <p> <b>Taxonomic notes:</b> — <i>Justicia pusilla</i> is characterized by perennial herb, cystoliths not apparent, simple spike with 1 or 2 flowers per node, the axis eglandular, bracts lanceolate, larger than the calyx, calyx 5-partite, segments equal, corolla white, anther-thecae slightly superposed, parallel to oblique, or at right-angles, one slightly larger than the other, without appendages, ovary and capsules glabrous with seeds compressed. Therefore, it belongs to <i>Justicia</i> sect. <i>Dianthera</i> subsect. <i>Dianthera</i> (Linnaeus 1753: 27) Graham (1988: 599) according to the classification of Graham (1988). The subsection corresponds to the <i>Dianthera</i> clade recognized by Kiel <i>et al.</i> (2018) that includes plants from aquatic or subaquatic habitats with inflorescences of axillary pedunculate spikes, 5-parted calyxes with equal segments, and discoid seeds rugose with minute papillae or ornamented with irregular, column-shaped tubercles. To occupy aquatic or subaquatic habitats, <i>Justicia pusilla</i> has pedunculate and always terminal spikes, calyxes with 5-parted equal segments, and discoid seeds.</p> <p> Sartin (2015) recorded 26 species of <i>Justicia</i> in Goiás State, three of which are probably new to science but not yet published, i.e., <i>J. horty-maitreyae</i> Sartin & Kameyama (2015: 83), <i>J. indespecta</i> Sartin & Kameyama (2015: 67) and <i>J. neglecta</i> Sartin & Kameyama (2015: 87). Chagas & Costa-Lima (2020) recorded 23 species of that genus in the same state. <i>J. pusilla</i> resembles <i>J. laevilingui</i> s (Ness 1847: 120) Lindau (1894: 20), the only taxa belonging to <i>J.</i> sect. <i>Dianthera</i> subsect. <i>Dianthera</i> previously reported from Goiás State, in sharing a herbaceous or subshrub habit, stems neither constricted nor dilated above the nodes, bracts non-imbricate, calyx with five equal lobes, anthers with poorly developed connectives, thecae without appendages, and capsules glabrous. However, the characters listed in table 1, serve to differentiate such species.</p> <p> Among the undescribed new taxa proposed by Sartin (2015) from Goiás State, <i>J. pusilla</i> superficially resembles <i>J. indespecta</i> by having a subshrub habit, cylindrical or subcylindrical stems, petiolate leaves, peduncle spikes, bracts and bracteoles sessile, as well as small flowers, but differs from <i>J. indespecta</i> in several ways, such as its growth aspect, the type of indumentum on the stems and its distribution, type of inflorescence, corolla colors, features of the calyx lobes, as well as the dimensions of the leaf blade, petiole, corolla lobes, stamen filaments, bracts and bracteoles, and the vestiture of the latter. It can be easily distinguished from <i>J. indespecta</i> by an erect habit (<i>vs</i>. procumbent or erect), stems tomentose and shortly hispid, without dilatation above the nodes (<i>vs.</i> scabrous or pubescent, with dilatation above the nodes), leaves strigillose on both surfaces (<i>vs.</i> glabrous or strigose-pubescent on the petiole and near the veins), spikes simple and always terminal (<i>vs.</i> simple or compound, axillary and terminal), bracts 4.5–4.8 mm long, shortly hispid on both surfaces (<i>vs.</i> 5–7 mm long, pilose on adaxial surface and glandular-pilose on the abaxial surface), bracteoles 3.5–6 × 0.2–0.25 mm (vs. 4–6 × 0.2–0.3 mm), calyx 5 partite, the lobes equal or slightly subequal (<i>vs.</i> 5 partite, lobes unequal in 2+2+1 pattern), corolla 5–5.1 mm long, white with a lilac spot on the palate (<i>vs.</i> Ca. 6 mm, lilac with a white spot on the palate), as well as capsules 4–4.1 × 1.2–1.3 mm long, clavate and puberulous (<i>vs.</i> ca. 6– 1 mm, panduriform, glabrous).</p>Published as part of <i>Silva, Marcos José Da, 2021, A new and endangered species of Justicia L. (Justicieae-Acanthaceae) from the riparian forests of northern Goiás State, Brazil, pp. 37-45 in Phytotaxa 525 (1)</i> on pages 38-43, DOI: 10.11646/phytotaxa.525.1.4, <a href="http://zenodo.org/record/5681814">http://zenodo.org/record/5681814</a>
Estudio preliminar sobre la variación de capacidad vital entre dos técnicas respiratorias de expansión torácica auto asistida en alumnos de 4to. año de kinesiología de la Universidad Católica Silva Henríquez
No full textSeminario de título (Kinesiólogo) -- Universidad Católica Silva Henríquez, 2016Objetivo General: Determinar la diferencia de capacidad vital entre dos
Técnicas Kinésicas Respiratorias de expansión pulmonar auto-asistida: Patrón
Muscular Respiratorio de Sollozos Inspiratorios (SI) y Espiración Abreviada
(EA).
Metodología: Estudio Preliminar descriptivo transversal. Este estudio incluyo a
alumnos cursando 4to año de kinesiología en la Universidad Católica Silva
Henríquez. Para realizar este estudio, se les enseñaron dos técnicas kinésicas
respiratorias de expansión torácica y se midieron tres veces ambas técnicas (SI
y EA), registrando el valor más alto de cada técnica (variación < 20% entre las
tres mediciones de cada técnica). También se midió la capacidad vital
producida por ambas técnicas a través de un ventilómetro (volúmenes). Se
aplicó el cuestionario para consumidores de tabaco (C4) para clasificar a los
alumnos entre fumadores y no fumadores y así verificar si hay diferencias entre
esta población en ambas técnicas.
Marco Conceptual: La ventilometría, en particular el volumen minuto, nos
habla directamente de los requerimientos ventilatorios del paciente y de la carga
a la que tiene que ser sometida la musculatura ventilatoria.
Según estudios han demostrado que el fumar contribuye a alteraciones en la
mecánica pulmonar. La función pulmonar y el intercambio gaseoso pueden ser
incrementados. Las técnicas de expansión pulmonar tienen el propósito de
modificar el volumen y profundidad respiratorios, bajo control voluntario y luego
automático, con una consecuente distribución y efectivos.
Resultados: La capacidad vital entre el SI (M: 4101,33 SE: 195,650) y EA (M:
4186 SE: 198,315; t(29):-1,443, P>0,05) no demostraron diferencias
significativas. La capacidad vital producida en Población No fumadora (M:
4065,63 SE: 284,277) y fumadora (M: 4323,57 SE: 280,542; t(28):-
0,642,P>0,05) en técnicas de EA no demostraron diferencias significativas al
igual que en la Población No fumadora (M:4016,25 SE:258,105) y fumadora
(M:4198,57 SE:306,219; t(28):-0,46,P>0,05) en técnica del SI.
Palabras Claves: capacidad vital, tabaquismo, técnicas de expansión torácica,
ventilometría
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A letter from Roberto Silva to Dr. Hector P. Garcia.
No full textA letter from Roberto Silva, President Elect of the Mexican American Physicians Association, to Dr. Hector P. Garcia, inviting him to accept a small token of respect
Jitter cancellation method for continuous-time sigma-delta modulators
No full textA continuous-time delta-sigma analog-to-digital converter (ADC) is disclosed. The ADC includes a loop filter, a loop quantizer, and a clock-jitter tolerant digital-to-analog converter (DAC). The clock-jitter tolerant DAC includes a dual switched-current (SI) DAC, a switched-capacitor (SC) DAC, an adder, and a switched-capacitor-resistor (SCR) injection circuit. The dual SI DAC provides two identical analog signals from the feedback digital signal of a loop quantizer within the ADC. The SC DAC provides an error-free reference signal from the feedback digital signal. The adder subtracts one of the two analog signals from the error-free reference signal to obtain an inverted jitter-induced error signal. The SCR injection circuit then injects the inverted jitter-induced error signal, delayed by one clock-cycle, in the form of a half-delay return-to-zero exponentially decaying waveform into the loop filter.U
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