122,776 research outputs found
Woodrow Borah, New Spain's Century of Depression.
No full textAubrun Charles Vincent. Woodrow Borah, New Spain's Century of Depression.. In: Bulletin Hispanique, tome 53, n°4, 1951. p. 452
Peliosanthes Borah & Taram & Tanaka 2024
No full text<p> <i>Peliosanthes maheswariana</i></p> <p>D.Borah, N.Tanaka & Taram, sp. nov.</p> <p>(Figs 1, 2; Table 1).</p> <p> <i>Peliosanthes maheswariana</i> sp. nov. is similar to <i>P. sinica</i> F.T.Wang & Tang in having an elongate proximally creeping stem, short anthers and a pistil distally abruptly tapering into a conical style, but differs mainly by the larger leaves with more numerous longitudinal veins, longer peduncle, larger drooping (vs ascending) flowers, internally whitish yellow (vs purple or greenish purple) perianth, larger corona with a relatively narrow distal opening, and almost superior (vs half-inferior) ovary.</p> <p> TYPE MATERIAL. — <b>India</b> • Arunachal Pradesh, West Kameng district, West Kameng; alt. 800-900 m; 10.I.2023; <i>D. Borah 4045</i> (holo-, ASSAM!; iso-, ARUN!).</p> <p>ETYMOLOGY. — The species is named in honor of Shri. Maheswar Borah, a dedicated plant grower of Biswanath, Assam, who has funded the trips of the first author to remote localities of the region in search of plants.</p> <p>DISTRIBUTION. — NE India (Arunachal Pradesh).</p> <p>PHENOLOGY. — Flowering in December-February.</p> <p> HABITAT AND ECOLOGY. — The new species was growing abundantly on rocks or forest floor in the slopes of the type locality above 800 m a.s.l. The area was very close to a perennial stream, but the area remains dry from November to March. It was growing in association with <i>Begonia hatacoa</i> Buch. -Ham. ex D.Don, <i>Dendrocnide sinuata</i> (Blume) Chew, <i>Begonia</i> sp., <i>Pothos</i> sp., <i>Syzygium</i> sp., <i>Psychotria</i> sp., <i>Dalhousiea bracteata</i> (Roxb.) Graham ex Benth., <i>Pseuderanthemum leptanthum</i> (C.B.Clarke) Lindau, etc.</p> <p>DESCRIPTION</p> <p> Terrestrial or lithophytic, glabrous evergreen perennial herbs. <b>Stem</b> distally erect to ascending, proximally creeping and rhizome-like, part above ground up to 1 m tall (including leaves on top of stem), proximal creeping part up to 1 m long, terete, up to 0.8 cm in diam., green, annual nodes spaced at intervals of 8-14.5 cm, up to <i>c.</i> 1.8 cm in diam.; <b>scaly leaves</b> (scales) deltoid-ovate, lanceolate, or narrowly deltoid, 1-20 cm long, 0.8-2 cm wide at base (when expanded), acute or acuminate, brownish, hyaline along margins, ephemeral, those sheathing apical portion of stem several, basally imbricate; scars (nodes) of scales between annual nodes 11-15, often with fibrous remnants, spaced at intervals up to 1.7 cm long. <b>Roots</b> 1 to a few (<i>c.</i> 3) from annual nodes aged at least 1 year, wiry, some stilt-like, proximally rigid, up to 3 mm in diam. <b>Leaves</b> 1-2 from annual node, persistent usually for up to 3 years, petiolate; <i>petiole</i> rigid, subterete, 10-30 cm long, 3-5 mm wide, suberect; <i>blade</i> (narrowly) elliptic, 20-40 cm long, 5-10 cm wide, arcuate, base attenuate, margins entire, apex acute to acuminate, sub-plicate, glabrous, glossy on both surfaces, longitudinal veins 64-68 (16-17 thicker and 3 thinner veins within the thicker ones), cross-veinlets fine, inconspicuous, perpendicular to oblique to longitudinal veins, straight to variously curved. <b>Flowering stem</b> (including peduncle and inflorescence rachis) 25-32 cm long, usually slightly declined, flattened and narrowly two-edged; <i>peduncle</i> often slightly curved near base, rigid, up to 17 cm long, 3 mm wide, green; <i>inflorescence</i> a raceme, rachis (6) 9-15 cm long, green, bearing 18- 30 flowers. <b>Bracts</b> (including those on peduncle) antrorse, narrowly triangular to subulate, 4-23 mm long, 1.5-5 mm wide (at base), green or light green, hyaline along margins; sterile bracts on peduncle 2-5 (excluding basal ones); fertile (floral) bracts 2 (1 outer bract and 1 inner bracteole) for each flower, outer bracts exceeding floral buds, inner bracteoles 1-2 mm long, <i>c.</i> 1 mm wide, lanceolate, acuminate. <b>Flowers</b> turned toward the same side, slightly drooping, solitary in bracts, 1.3-1.6 cm across, pedicellate; <i>pedicels</i> terete, 2-3 mm long, straight and ascending when flowers are in bud, becoming curved in flower and in fruit, green, purplish or blackish green. <b>Perianth</b> bowl-shaped, fleshy, externally green to dark purple, glossy, internally whitish yellow, distally 6-cleft; <i>proximal syntepalous part</i> flatly saucer-shaped, 3.5-3.8 mm long, basally abruptly narrowed into a very small stalk much shorter than pedicel; <i>segments</i> obliquely spreading, broadly or deltoid-ovate, 4-6 mm long, 4.5-5 mm wide, apex obtuse to rounded, entire. <b>Stamens</b> 6, monadelphous; <i>corona</i> epitepalous, hemispheric or conoid with wall incurved distally, thickened toward base, wall at base 1.5-1.8 mm thick, basal outline orbicular, 6-7.5 mm in diam. at base, 3 mm high, surface whitish yellow, fleshy, apical opening relatively narrow, rounded, scarcely lobed, 2 mm in diam.; <i>anthers</i> 6, sessile, nearly vertically attached to orifice of corona, ovate, 1.2-1.3 mm long, introrse, creamy; <i>pollen</i> creamy. <b>Pistil</b> 1, 3 mm high, pale green; <i>ovary</i> almost superior (or very slightly half-inferior), hemispheric, 1.5 mm high and 3.5 mm wide at base, trilocular; <i>ovules</i> 4 per locule, borne on basal central placenta; <i>style</i> subconic, truncate at apex, 1.5 mm long, 1-1.5 mm wide at base, <i>stigma</i> trisected, 0.8 mm wide. <b>Immature seeds</b> ovoid-ellipsoid, up to 1.5 cm long, 1 cm wide, green.</p> <p>TAXONOMIC RELATIONSHIPS</p> <p> <i>Peliosanthes maheswariana</i> sp. nov. shares a long, proximally creeping stem with six other species so far known. Three of these six species were originally described from SW China; <i>P. sinica</i>, <i>P. pachystachya</i> W.H.Chen & Y.M.Shui (Chen & Shui 2003: 489) and <i>P. minutiflora</i> N.Tanaka, J.Murata & S.K.Wu (Tanaka <i>et al.</i> 2013: 135). The new species is distinguishable from them chiefly by the larger leaf blades with more numerous longitudinal veins, longer peduncle, larger drooping (vs ascending) flowers, internally whitish yellow (vs purple or greenish purple) perianth, larger corona with a relatively narrow distal opening, and almost superior (vs distinctly half-inferior) ovary. The other three of the six species were described from NE India; <i>P. arunachalensis</i> (Roy <i>et al.</i> 2017), <i>P. nagalandensis</i> and <i>P. tobuensis</i> (Odyuo <i>et al.</i> 2020). <i>P.maheswariana</i> sp. nov. differs from <i>P.arunachalensis</i> mainly by the longer leaf blades (20-40 vs 16.5-21.5 cm), longer racemes (6-15 vs 2-3 cm), more numerous flowers (18-30 vs 7-10), and shorter anthers (1.2-1.3 vs 3-3.5 mm); from <i>P. tobuensis</i> by the longer racemes (6-15 vs 2-4 cm), orbicular (vs hexagonal) corona and longer anthers (1.2-1.3 vs 0.3-0.4 mm); from <i>P. nagalandensis</i> by its shorter anthers (1.2-1.3 vs 2-2.5 mm) and almost superior (vs inferior) ovaries. Several selected key distinguishing characters of <i>P. maheswariana</i> sp. nov. and four other related species are compared in Table 1. For the details of differences between the six previously known long-caulescent species and an identification key to them, see Odyuo <i>et al.</i> (2020).</p> <p> The long, proximally creeping stem of these seven species (including <i>P.maheswariana</i> sp. nov.) is deemed as apomorphic (vs acaulescent or short stem). The species having this trait are hence regarded as members of a monophyletic group. It is highly desirable to conduct a further analysis of their evolutionary relationships.</p>Published as part of <i>Borah, Dipankar, Taram, Momang & Tanaka, Noriyuki, 2024, Peliosanthes maheswariana D. Borah, N. Tanaka & Taram, sp. nov. (Asparagaceae), from Arunachal Pradesh, NE India, and P. sinica new to India, pp. 1-8 in Adansonia (3) (3) 46 (1)</i> on pages 2-4, DOI: 10.5252/adansonia2024v46a1, <a href="http://zenodo.org/record/10473197">http://zenodo.org/record/10473197</a>
La grande dépression du Mexique colonial : les travaux de Woodrow Borah
No full textChaunu Pierre. La grande dépression du Mexique colonial : les travaux de Woodrow Borah . In: Annales. Economies, sociétés, civilisations. 12ᵉ année, N. 3, 1957. pp. 512-514
Quelle fut la stratification sociale au Mexique durant la première moitié du XVIe siècle ?
No full textCook Sherburne F., Borah Woodrow. Quelle fut la stratification sociale au Mexique durant la première moitié du XVIe siècle ?. In: Annales. Economies, sociétés, civilisations. 18ᵉ année, N. 2, 1963. pp. 226-258
Woodrow Borah, Early colonial trade and navigation between Mexico and Peru.
No full textAubrun Charles Vincent. Woodrow Borah, Early colonial trade and navigation between Mexico and Peru.. In: Bulletin Hispanique, tome 57, n°1-2, 1955. pp. 189-190
La grande dépression du Mexique colonial : les travaux de Woodrow Borah
No full textChaunu Pierre. La grande dépression du Mexique colonial : les travaux de Woodrow Borah . In: Annales. Economies, sociétés, civilisations. 12ᵉ année, N. 3, 1957. pp. 512-514
Cook Sherburne F., Borah Woodrow — Essays in Population History : Mexico and the Caribbean
No full textH. J. Cook Sherburne F., Borah Woodrow — Essays in Population History : Mexico and the Caribbean. In: Population, 27ᵉ année, n°6, 1972. pp. 1176-1177
Sherbune F. Cook et Woodrow Borah, Essays in Population History. Mexico and the Caribbean
No full textMauro Frédéric. Sherbune F. Cook et Woodrow Borah, Essays in Population History. Mexico and the Caribbean . In: Cahiers du monde hispanique et luso-brésilien, n°19, 1972. pp. 250-251
Specific ion effects on adsorption at the solid/electrolyte interface: A probe into the concentration limit
No full textAdsorption of organic acid at the mineral oxide-electrolyte interface has been explored. The adsorption of 2,4-dihydroxybenzoic acid onto a-alumina illustrates that specific ion effects show up at very low salt concentration (<0.05 mM). These surprising Hofmeister effects occur at salt concentrations an order of magnitude lower than in a previous study (j. Colloid Interface Sri. 2010, 344, 482). Salts enhance adsorption and specifically at <= 0.05 mM. With increasing concentration of ion, the adsorption density decreases. The results are accounted for by incorporating the ion size and dispersion forces in the theoretical modeling based on ab initio calculations of polarizabilities. The order appears to be governed by ion size, determining the maximum concentration that ions can attain near the surface due to close packing
Sherburne F. Cook et Woodrow Borah, Essays in Population History. Mexico and the Caribbean. Vol. II
No full textMauro Frédéric. Sherburne F. Cook et Woodrow Borah, Essays in Population History. Mexico and the Caribbean. Vol. II . In: Cahiers du monde hispanique et luso-brésilien, n°23, 1974. pp. 161-163
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