919 research outputs found
Eremocaulon Soderstrom & Londono 1987
No full textEremocaulon Soderstrom & Londoño (1987: 37). TYPE:— Eremocaulon aureofimbriatum Soderstrom & Londoño (1987: 37). Plants cespitose. Culms homomorphic, erect below, arching and clambering above, often supported by trees, 2.5–20 m tall, infra- and supranodal bands of trichomes usually absent [present in E. capitatum (Trinius 1835: 626) Londoño in Londoño & Clark (2002: 714)]. Branch complement with one dominant and smaller secondary branches, without thorns. Culm leaves and foliage leaves clearly distinct. Culm leaves not clearly differentiated along the culm, with reflexed blades, narrower than the sheath summit, sheath fimbriae present. Foliage leaf sheaths with fimbriae at the apex or not, translucent swelling absent, outer ligule present, blades narrowly triangular, ovate-lanceolate or linear-lanceolate, midnerve prominent. Synflorescences terminal to leafy, indeterminate, 1–15 pseudospikelets per coflorescence, coflorescences either with one to few pseudospikelets and open or with several to many pseudospikelets and congested to capitate, each coflorescence and paraclade or pseudospikelet with one subtending bract; pseudospikelets sessile, bisexual, glumes absent, comprising 1 prophyll, 0–4 gemmiparous bracts, with 1–17 fertile anthecium, smooth, and with 1–4 terminal rudimentary anthecium. Fruit a basic caryopsis, hilum linear, as long as the caryopsis. Eremocaulon is a woody bamboo genus endemic to Brazil (Londoño & Clark 2002, Kellogg 2015, Jesus-Costa et al. 2018). It is characterized by its branch complement with one dominant and smaller secondary branches, without thorns, infra- and supranodal bands of trichomes absent (present in E. capitatum), culm leaves with reflexed blades, narrower than the sheath, foliage leaves with midnerve prominent and synflorescences composed of pseudospikelets (Londoño & Clark 2002). The genus has five species in the Amazon, Cerrado and Mata Atlântica domains (Lopes-Neto et al. 2020). In the Serra do Cachimbo, the genus is represented by one species.Published as part of Lopes-Neto, Raimundo Balieiro & Viana, Pedro Lage, 2022, Flora of the Serra do Cachimbo (Eastern Amazon, Brazil): Bambusoideae (Poaceae), including the description of two new species, pp. 99-129 in Phytotaxa 550 (2) on page 107, DOI: 10.11646/phytotaxa.550.2.2, http://zenodo.org/record/664108
SUSAN SODERSTROM, ORGAN MASTER'S RECITAL SUNDAY, MARCH 22, 1981 5:00 P.M. AT FIRST PRESBYTERIAN CHURCH
No full textPROGRAM: Pange lingua from Premier livre d'orgue / Nicolas de Grigny -- Variations on "Mein junges Leben hat ein End" / Jan Pieterszoon Sweelinck -- Prelude and fugue in E minor, BWV 548 / Johann Sebastian Bach -- Pastorale / Roger-DucasseThis recital is given in partial fulfillment of the requirements for the Master of Music degree
Resistencia a la compresión paralela a la fibra de una especie de bambú nativo de México (Otatea fimbriata Soderstrom)
No full textEn la presente investigación se determinó el esfuerzo máximo a la compresión paralela a la fibra en una especie de bambú nativo de México (Otatea fimbriata Soderstrom), encontrada de forma silvestre en el municipio de Suchiapa, Chiapas, para su validación como material de construcción. Se ensayaron muestras con nudo y sin nudo de la parte inferior, media y superior de los culmos, siguiendo los procedimientos de la NTC-5525:2007 “Métodos de ensayo para determinar las propiedades físicas y mecánicas de la Guadua Angustifolia Kunth” y las Normas ISO: 22157-1: 2004 e ISO TR 22157-2: 2004. Los valores de resistencia máxima están dentro del rango reportado de otras especies de bambú (genero Guadua). Los valores a compresión demuestran que la Otatea fimbriata Soderstrom es un material alternativo, natural, altamente renovable y con alto potencial para su uso en construcción
Monetary Policy, Doubts and Asset Prices
No full textAsset prices and the equity premium might reflect doubts and pessimism. Introducing these features in an otherwise standard New-Keynesian model changes in a quite substantial way the nature of the policy that maximizes the welfare of the consumers in the model. First, following productivity shocks, optimal policy in this model is more accommodating than in a standard New-Keynesian model, and may even inflate the equity premium. Second, asset-price movements improve the inflation-output trade-off so that average output can rise without increasing much average inflation. Finally, a strict inflation-targeting policy may result in lower average welfare than a more flexible inflation-targeting policy, which instead increases the comovements between inflation, asset prices and output growth.
Raddiella esenbeckii C. E. Calderon & Soderstrom 1980
No full textRaddiella esenbeckii (Steudel 1855: 90) C.E. Calderón & Soderstrom (1980: 21) ≡ Panicum esenbeckii Steudel (1855: 90). Fig. 7 H–I. Lectotype (designated by Zuloaga & Judziewicz 1991):— BRAZIL. Amazonas: Rio Negro, Ega, Martius s.n. [lectotype M, isolectotype US-2877939 (fragment ex M)]. Rhizomes absent. Culms 8–40 cm tall, sprawling, decumbent to geniculate, the erect portions wiry, internodes 2.5–3.2 cm, pithy in center, smooth, glabrous to sparsely pilose with short, retrorse trichomes; nodes thickened, densely pilose with whitish retrorse trichomes. Leaf sheaths glabrous to short-pilose, densely toward the summit; ligules ca. 0.3 mm, membranous-ciliate; pseudopetioles 0.5–0.8 mm, densely pilose; blades 1.5–1.8 × 0.5–0.6 cm, ovate-triangular, firmly membranous, densely puberulent on both surfaces or glabrous on the abaxial surface and short-pilose near the base of the adaxial surface, asymmetrical, base truncate, ciliate in the lower margins, apex acute or short-apiculate. Terminal synflorescences 4–5 mm long, with male spikelets only, rachis short-pilose, pedicels ca. 2.5–5 mm long, filiform, minutely cupuliform at the apex, short-pilose. Axillary synflorescences ca. 1.3 cm long, with both male and female spikelets, male spikelets (1–)2–4, female spikelets 2, partially included in the leaf sheath, rachis shortpilose, pedicels 1–2 mm long, filiform, short-pilose. Male spikelets ca. 3 mm long, lanceolate, hyaline (in siccus), glabrous to sparsely hispid with short trichomes, falling entire; glume occasionally present, ca. 2 mm long, linearlanceolate, 1-nerved, membranous, shortly hispid, apex acuminate; lemma 3-nerved, glabrous to sparsely hispid with short trichomes, apex acuminate; palea 2-nerved, glabrous to sparsely hispid with short trichomes, apex acuminate; stamens 2, included, filaments 0.05 mm long, glabrous, anthers ca. 1.3 mm long, black (in siccus). Female spikelets ca. 2.1 × 1 mm, ovoid, greenish (in siccus), sparsely to densely short-pilose, membranous, the internodes between the glumes thickened, glumes deciduous; lower glume ca. 2.1 × 1 mm, 3-nerved, apex acuminate; upper glume ca. 2 × 1 mm, 3-nerved, apex acute; anthecium ca. 1.3 × 1 mm, ellipsoid, whitish (in siccus), compressed, coriaceous, deciduous; lemma 3-nerved, glabrous, apex acute; palea 2-nerved, glabrous, apex acute; ovary ca. 0.2 mm, ellipsoid, glabrous, style ca. 1 mm, glabrous to sparsely short-pilose, stigma 2, plumose. Caryopsis not seen. Specimens examined: — BRAZIL. Mato Grosso: Colider, Estrada Santarém-Cuiabá, BR 163 km 762, a 30 km de Guarantã, 19 April 1983, Amaral 806 (MG, INPA, MO, RB, US). Guarantã do Norte: Estrada Guarantã do Norte-Cachimbo, ca. 8 Km antes da divisa com o Estado do Pará, 26 April 1997, Souza et al. 15861 (ESA); ca. 13 Km antes da divisa com o Estado do Pará, 26 April 1997, Souza et al. 15805 (ESA); ca. 18 Km antes da divisa com o Estado do Pará, 26 April 1997, Souza et al. 15767 (ESA, UFMT). Pará: Altamira, Cachoeira do Rio Curuá, BR- 163 a 600 km de Itaituba-PA, 24 May 2005, Silva 1441 (HUEFS); ibidem, 8°44’01.2”S, 54°57’45.5”W, 28 May 2021, Lopes-Neto et al. 767 (MG). Distribution and habitat: —This species is found in Central and South America, from Panama to Bolivia and Central Brazil (Zuloaga & Judziewicz 1991). In Brazil, it is registered in the North (AM, AP, PA, RO, RR and TO), Northeast (BA, MA and PI), Central-West (DF, GO, MT and MS), Southeast (MG and SP) and South (PR) regions (Oliveira & Oliveira 2020). It can be found in gallery forests and savannas, in semi-shaded or dryish open areas, up to 1.500 meters (Zuloaga & Judziewicz 1991). In the Serra do Cachimbo, it was found in Campo cerrado, Campo rupestre and Open ombrophilous forest. Comments: — Raddiella esenbeckii and R. minima Judziewicz & Zuloaga (in Zuloaga & Judziewicz 1991: 939) share asymmetrical ovate-triangular leaves, that are truncate at the base and female spikelets with persistent glumes. However, R. esenbeckii is easily recognized by the culms 8–40 cm tall (vs. 3–6 cm long in R. minima), blades 1.5–1.8 cm long (vs. 0.4–0.6 cm long) and the axillary synflorescences bearing male and female spikelets (vs. the axillary synflorescences bearing only female spikelets). It also can be distinguished by the long-ellipsoid caryopsis, with the hilum short-linear, ca. 1/3 the length the caryopsis (Zuloaga & Judziewicz 1991).Published as part of Lopes-Neto, Raimundo Balieiro & Viana, Pedro Lage, 2022, Flora of the Serra do Cachimbo (Eastern Amazon, Brazil): Bambusoideae (Poaceae), including the description of two new species, pp. 99-129 in Phytotaxa 550 (2) on page 123, DOI: 10.11646/phytotaxa.550.2.2, http://zenodo.org/record/664108
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Measurement of the tau lepton mass by the Beijing Spectrometer (BES) Collaboration
No full textThe mass of the [tau] lepton has been measured at the Beijing Electron Positron Collider using the Beijing Spectrometer. A search near threshold for e[sup +]e[sup [minus]] [yields] [tau][sup +][tau][sup [minus]] was performed. Candidate events were identified by requiring that one [tau] decay via [tau] [yields] e[nu][bar [nu]], and the other via [tau] [yields] [mu][nu][bar [nu]]. The mass value, obtained from a fit to the energy dependence of the [tau][sup +][tau][sup [minus]] cross section, is m[sub [tau]] = 1776.9[sub -0.5][sup +0.4] [plus minus] 0.2 MeV
Human cytomegalovirus strain-dependent changes in natural killer cell recognition of infected fibroblasts.
No full textEvaluating electricity distribution network reconfiguration to minimize power loss on existing networks
No full textThis paper applies the distribution network reconfiguration problem to existing networks. The medium voltage distribution network of the Dutch DSO Alliander is operated using a radial topology. By optimizing this topology it is possible to reduce the energy losses caused by the cable impedances. Various solutions algorithms have been compared for this distribution network reconfiguration problem, while taking into account network capacity and voltage levels. A Genetic algorithm combined with a Greedy demeshing starting condition yields the best results. Applying the algorithm on real life distribution networks shows with 226 buses and 406 buses yield a reduction in power losses of 15% and 27% respectively.Support Delft Center for Systems and Contro
A framework to manage the re-organisation necessary in becoming an e-business : business-to-business e-commerce.
No full textBibliography: leaves 187-202.This thesis focuses on the development of a management framework that allows organisations to gradually evolve into a full-fletched B2B e-business. Every manager considering the implementation of a B2B e-business system as part of his business plan, need a rigorous approach for the successful implementation thereof. The successful planning and managing of e-business investments are of the utmost importance to sustain and create more shareholder value for the future. The main hypothesis stated by the author is that a framework is required to guide managers with the re-organisation necessary throughout the life cycle (including planning, implementation and sustaining) of a B2B e-business model. The author believes that this framework will contribute to organisations enhancing competitive position and thus, unlocking more shareholder value
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