1,727,658 research outputs found
Letter from UCO President Patti Neuhold-Ravikumar
Full text linkA letter from UCO President Patti Neuhold-Ravikumar to SWOSU President Diana Lovell
Millettia pseudoracemosa Thothathri & Ravikumar 1997
No full textIdentities of <i>Millettia pseudoracemosa</i> and <p> <b> <i>Millettia pseudoracemosa</i> Thothathri & Ravikumar (1997: 239) was described on the basis of a single collection (<i>S. Ravikumar 334</i>, Fig. 1: A–B), which was collected on 21 April 1995 from Anamalai Hills, Tamil Nadu, South India. The new species was considered to be similar to <i>M. racemosa</i> (Roxburgh 1832: 329) Bentham (1852: 249) in habit, shape, number and hairiness of leaflets, floral color, and pod shape. The latter species was first described based on specimens also from India, but it has been treated as a monospecific genus <i>Endosamara</i> Geesink (1984: 93) belonging to the tribe Wisterieae because of its true panicles with ebracteole flowers and very peculiar fruits with a lomented endocarp around each seed (Compton <i>et al.</i> 2019). Thothathri & Ravikumar (1997) also pointed out that their new species has a unique character in the genus, i.e. the large sized (2.5–3.0 cm long) and violet flowers.</b> </p>Published as part of <i>Song, Zhu-Qiu, 2023, The identities of Millettia pseudoracemosa and M. pulchra var. munnarensis (Fabaceae: Millettieae) from South India, pp. 55-63 in Phytotaxa 591 (1)</i> on page 56, DOI: 10.11646/phytotaxa.591.1.5, <a href="http://zenodo.org/record/7784270">http://zenodo.org/record/7784270</a>
Bauhinia bassacensis var. nicobarica Tiwari U. L., K. Ravikumar & N. Balachandran 2013, var. nov.
No full textBauhinia bassacensis var. nicobarica Tiwari U.L., K. Ravikumar & N. Balachandran, var. nov. (Figs. 1 & 2) Differs from the typical variety in having exstipulate leaves, lobes of leaves obtuse at apex, bract rusty tomentose and ovate, bracteoles 2, lanceolate, rusty tomentose; fertile stamens always 2; filaments hairy, anther lobes brown. Type:— INDIA. Great Nicobar Island: Near Army land, Campbell Bay, 20 February 2013, N- 71 o 2’ 2.9’’, E 93 o 55’ 2.9’’, 16 m ASL, K . Ravikumar, N. Balachandran and Umeshkumar Tiwari 115533 (holotype FRLH!; isotypes FRLH!, PBL!). Large, woody, climbers; tendrils coiled stout, glabrous; young branches rusty tomentose, mature grooved and lenticellate. Leaves exstipulate; petioles glabrescent, 2 7 cm long; lamina ovate-cordate, ca. 19 × 13 cm, 9 13-nerved, bifid, down to 3.5 4.8 cm length with narrow sinus, apex of lobes obtuse, base cordate, upper surface glabrous, lower brownish tomentose to glabrescent, base of the lamina with two distinct glands expanding up to pulvinous base. Inflorescences lateral or terminal, many-flowered, racemes or panicles; peduncles rusty tomentose; pedicels ca. 3.5 cm long in flower and ca. 7 cm long in fruit; bracts ovate, rusty tomentose, ca. 0.5 mm long; bracteoles 2, lanceolate, inserted near the middle of the pedicels, rusty tomentose, 1–1.5 mm long. Buds ovoid, rusty tomentose, 4–6 mm long. Hypanthium c. 1 mm long. Calyx during anthesis splitting into 2 segments forming right angles with the pedicels, 5–7 mm long, sometime persistent with fruit. Petals 2 above and three below, pubescent, creamish with purplish-red veins prominent on both sides, blade deltoid, crumpled, subequal, narrowly ovate to suborbicular with undulate margin, ca. 6 × 5 mm; claw 1.5–2 cm long, soft hairy. Stamens 9 (2 + 7); fertile stamens 2, staminodes absent sometime 1; filaments 1.2–1.6cm long, hairy; anthers 1–2 mm long, lobes brown; reduced stamens 7 in number, unequal, 3–9 mm long, filiform, white. Carpels densely brownish pilose, distinctly stalked, styles 6-8 mm, hairy with a small capitate stigma. Pods rusty tomentose, 8–13 × 3–4 cm with persistent style, stalks c. 3 mm long; styles persistent in fruit. Seeds, 2–5, dark brown, flattened, oblong-orbicular, c. 1.5 × 2 cm, smooth, glabrous. Flowering & Fruiting:— From February to March. Distribution:— India: Campbell Bay, Great Nicobar Island, Andaman and Nicobar Islands. Habitat:— Liana in mixed semi-evergreen forests. Ecological status:— About three individuals confined to an area of 1 km 2 were observed during field survey. Though it qualifies to be kept under Critically Endangered (CR) category, further studies and explorations in adjacent areas are required to ascertain its actual status. Etymology:— The varietal epithet refers to the place of its collection. This new variety is allied to typical var. bassacensis and var. backeri, but differs from both markedly in having exstipulate leaves, lobes of leaves obtuse at apex, bract rusty tomentose and ovate, bracteoles 2, lanceolate, rusty tomentose; fertile stamens always 2; filaments hairy, anther lobes brown (see table 1).Published as part of Tiwari, Umeshkumar, Ravikumar, Kaliamoorthy & Balachandran, Natesan, 2013, A new variety of Bauhinia bassacensis (Leguminosae: Caesalpinioideae) from Great Nicobar Island, India, pp. 12-18 in Phytotaxa 149 (1) on pages 13-16, DOI: 10.11646/phytotaxa.149.1.2, http://zenodo.org/record/510042
Public vs Private Schooling in an Endogenous Growth Model
Full text linkI present an overlapping generations model, with formal education as the engine of growth, close to Glomm and RaviKumar (1992). Contrary to Glomm and Ravikumar, I Show that public schooling, when compared to a private system, may stimulate economic growth.
Data for: Capital Accumulation and Dynamic Gains from Trade
No full textAll of the data we use in the paper are publicly available. The description of the datasets is in the paper
Replication Data for: "Repeated Leak Detection and Repair Surveys Reduce Methane Emissions Over Scale of Years"
No full textThis dataset provides all the raw data collected as part of the field study associated with the paper: "Repeated Leak Detection and Repair Surveys Reduce Methane Emissions Over Scale of Years". The data provided here can be used to replicate all results presented in the manuscript
Data for: Capital Accumulation and Dynamic Gains from Trade
No full textAll the data we use in the paper are publicly available. The description of the datasets is in the paper
Management guidelines for the evaluation and selection of the welding technologies for use in outer space
No full textThesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991.Includes bibliographical references (leaves 140-146).by Ravikumar Ramiah Nagabushanam.M.S
FIGURE 2. Aristolochia gurinderii K in Aristolochia gurinderii (Aristolochiaceae): a new species from Great Nicobar Island, India
No full textFIGURE 2. Aristolochia gurinderii K. Ravikumar, Umeshkumar Tiwari and N. Balachandran, sp. nov.: A. Leaf with fruit; B. Inflorescence; C. Flower patterns; D. Close up of Flower; E. Dry Fruits and F. Green Fruit (Type: FRLH).Published as part of Ravikumar, K., Tiwari, Umeshkumar & Balachandran, N., 2014, Aristolochia gurinderii (Aristolochiaceae): a new species from Great Nicobar Island, India, pp. 117-122 in Phytotaxa 172 (2) on page 120, DOI: 10.11646/phytotaxa.172.2.7, http://zenodo.org/record/514244
- …
