18,123 research outputs found
Latin America and the Caribbean region population projections : 1990-91
No full textThis paper provides population projections for each country, economy, or territory in one World Bank region, as well as for nonborrower countries in the same geographic area. The Latin American and the Caribbean region is demographically at an intermediate stage. Fertility has declined to between 3 and 4 children per woman in all subregions as contraceptive use has continued to broaden. Life expectancy has risen to between 65 and 69, or about 10 years below countries with the most favorable mortality conditions. Some countries in the region have advanced to replacement level fertility; a few others are just starting the fertility transition. The projections show all countries in the region completing the transition by 2030 - the earliest of all regions. In this 1990-91 edition, projects are provided in a new format to permit the inclusion of data on recent demographic trends. Projection methods have changed only marginally since the previous edition. Essentially, recent country-specific data about levels and trends in fertility, mortality, and international migration are applied to available age-sex distributions in order to obtain short-run projections. Long-run projections, up to 2150, are also made under the assumptions that fertility and mortality eventually become stable and net international migration declines to zero.Demographics,Health Indicators,Health Information&Communications Technologies,,Country Population Profiles
ON THE CIRCULAR DICHROISM MEASUREMENTS IN THE 800-600 cm-1 RANGE
No full text P. L. Polavarapu, Appl. Spectrosc, 38, 26 (1984). P. Devlin and P.J. Stephens, Appl. Spectrose. 41, 1142 (1987).Author Institution: Department of Chemistry, Vanderbilt UniversityCircular dichroism measurements in the range were shown to be feasible about five years Some of these earlier results were 'misinterpreted' These differences will be clarified and new results will be presented
The politics and economics of regulatory impact assessment
No full textThis is the author accepted manuscript. The final version is available from the publisher via the link in this record
Irish Fairy Tales
No full textA book of Irish Fairy Tales written by James Stephens, illustrated by Arthur Rackham. Plates accompanied by guard sheets with descriptive letterpress. Illustrated t.p. 318 p. : ill. (some col.), col. plates ; 21 cm. Published: New York : Macmillan, 1920. This digital edition is missing pages 176-177 and 304-305
Asia region population projections : 1990-91 edition
No full textAlmost half the worlds population lives in Asia. This proportion is expected to decline to 40 percent by the end of the next century, mainly because of slowing growth in China. Other countries will continue to grow rapidly, and India, which adds more people every year than any other country, is project to surpass China in total population. Recent contraceptive prevalence surveys in several countries in the region show increasing proportions of couples using birth control. Fertility in these countries, mostly in Southeast Asia, has consequently declined rapidly. Population growth rates started to drop in many countries in the region in the past decade, but the momentum built in to the age structures of the populations will ensure continued population growth for many decades. Other countries in the region are lagging in fertility decline, and their populations will continue to grow at high rates. Infant and child mortality are the lowest in countries where fertility has declined.Earth Sciences&GIS,Demographics,Health Indicators,Health Information&Communications Technologies,
[Plat map showing land in Throckmorton, Shackelford, and Buchanan (Stephens) County]
No full text1 map : photocopy ; 19 x 22 cm, on sheet 23 x 25 cmMap shows plats in Throckmorton, Shackelford, and Stephens County. Stephens County is labeled as Buchanan County.North oriented to top of map.Left margin: "B."Map shows distances to Fort Belknap.Verso: "Copy from the National Archives Record Group No. 77, Z302(2)"Southwest Collection copy: former call number MAP 12.5 T355.Southwest Collection copy is a positive photostatic copy from the National Archives.Southwest Collection copy 2 is a negative photostatic copy from the National Archives dated January 1956.Southwest Collection copy: gift of Alice Reynolds, 1971
Hymedesmia HIBERNICA STEPHENS 1916
No full textHYMEDESMIA (STYLOPUS) HIBERNICA STEPHENS, 1916 (FIG. 10A, B) Specimens: Specimen in IMS, section and spicule preparation from tissue sample (Rathlin Island Sponge Biodiversity Project; specimen 1, west of Derginan Point, 55°18.283 ′ N, 06°16.774 ′ W; water depth, 28.5–31.5 m; Mc 2766). Collected by B. Picton and C. Goodwin, 15 August 2005. Specimen 2: White Cliffs (55°17.546 ′ N, 06°14.518 ′ W; water depth, 32–35 m; Mc 2950). Collected by J. Jones and C. Goodwin, 7 August 2005. Comparative material examined: Hymedesmia hibernica Stephens, 1916 type (W141 14.1916). NMI. External morphology: A yellow sponge with large pore sieves, which is slightly translucent in appearance. Both specimens formed thin encrustations on rock: these are very small patches of less than 5 cm in maximum diameter. Skeleton: Basal layer of acanthostyles, in which the smaller category are more abundant, and in which acanthostyles are spread evenly but fairly sparsely, with some space in between them. The ascending columns of anisostrongyles are 5–8 spicules thick. The sponge is 500–800-Mm thick. Spicules: 1. Large acanthostyles: 250–325 Mm by 5–12 Mm. These acanthostyles have a slightly tylote head, which is more obvious in thinner specimens, and are spined on the head and up to half of the way up the shaft, although with much smaller spines. The head spines are often strongly curved up towards the shaft. 2. Small acanthostyles: 110–130 Mm by 10–12 Mm. These are entirely spined with large recurved spines on the shaft, which become progressively sparser towards the tip; the head is not tylote, but is marked by denser spines that are often curved up towards the shaft. 3. Ectosomal spicules: 200–250 Mm by 2–4 Mm, with thin anisostrongyles. One end is usually thicker than the other, and neither end is tylote. 4. Microscleres: none present. Remarks: The spiculation agrees almost exactly with that described by Stephens (1916), apart from the tendency for the tylostyles to become subtylote. This species was originally described from 74 m off Reenacry Head, County Kerry, Ireland. It has since been recorded from the English Channel, from Roscoff (Cabioch, 1968).Published as part of Goodwin, Claire E. & Picton, Bernard E., 2009, Demosponges of the genus Hymedesmia (Poecilosclerida: Hymedesmidae) from Rathlin Island, Northern Ireland, with a description of six new species, pp. 896-912 in Zoological Journal of the Linnean Society 156 (4) on pages 907-908, DOI: 10.1111/j.1096-3642.2008.00498.x, http://zenodo.org/record/463507
Phase Distribution Efficiency of cm-Scale Ultrasonically Powered Receivers
No full textIn the domain of ultrasonically powered biomedical implants, there is an increasing interest in cm-scale ultrasonic receivers (RX). However, when a single-element transducer is used as the RX transducer, an uneven phase distribution across the RX area can significantly reduce the harvestable power. In this paper, we investigate the impact of lateral and angular misalignment on the acoustic field phase distribution across the RX surface. We show that, for a single-element RX transducer, lateral misalignment has minimal effect on the harvestable power, whereas even small angular misalignments can cause a considerable reduction, especially for larger RX sizes. We present a potential solution that consists of subdividing a large RX transducer (e.g. 20 × 20mm2) into smaller elements, which significantly improves power transfer efficiency by taking advantage of the smaller phase variation across the surface of each element. The trade-offs between achieving a minimum acceptable power transfer efficiency and managing the increased complexity in packaging and matching circuitry are also discussed.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic Components, Technology and MaterialsBio-Electronic
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