• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 162
  • 132
  • 75
  • 42
  • 24
  • 21
  • 6
  • 3
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 546
  • 176
  • 116
  • 98
  • 97
  • 67
  • 63
  • 60
  • 55
  • 50
  • 46
  • 44
  • 42
  • 40
  • 37
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Evaluating eelgrass (Zostera marina) as a juvenile habitat for rockfishes : contributions of site characteristics and larval supply to juvenile abundance

Jeffery, Sharon 05 1900 (has links)
Seagrass beds are highly valuable ecosystems with a potential nursery function for rockfishes in British Columbia. Understanding how the nursery value of seagrass habitats differs for rockfish species, and what factors create this variability in habitat value, is important for effective conservation planning. In this study, the use of Zostera marina beds in Barkley Sound by juvenile rockfishes (Sebastes spp.) was investigated. Rockfish have been observed in Z. marina beds by many researchers, however, their abundance and distribution between beds has been shown to be variable. The abundance of juvenile rockfishes in five beds was assessed in 2005 and 2006 using visual surveys. Environmental and biological variables that could potentially influence this abundance were measured concurrently. These included supply of settling fish (hereafter “settlers”), biotic and abiotic habitat characteristics. The eelgrass beds that I studied were found to differ significantly in their habitat characteristics, the abundance of settlers arriving to them, as well as the abundance of juvenile recruits in the beds. Sebastes melanops and S. caurinus were found at the sites between June and September. There was no significant relationship between the abundance of settlers arriving at a bed, and the abundance of juveniles using it. However, many of the eleven habitat characteristics investigated were significantly correlated with the abundance of either S. melanops, or S. caurinus. It is likely that these relationships arose from multiple causes which acted both pre- and post-settlement. Habitat features that were identified as correlates with high juvenile abundance value included lower epiphyte biomass, nearness to kelp habitats, lower water temperature, lower shoot density, and higher leaf width.
22

A study of similarities and differences in teaching in nursery school, kindergarten, and first grade

Langdon, Grace, January 1933 (has links)
Thesis (Ph. D.)--Columbia University, 1933. / Vita. Published also without thesis note under title: Similarities and differences in teaching in nursery school, kindergarten, and first grade. Bibliography: p. 99-101.
23

A study of similarities and differences in teaching in nursery school, kindergarten, and first grade,

Langdon, Grace, January 1933 (has links)
Thesis (Ph. D.)--Columbia University, 1933. / Vita. Published also without thesis note under title: Similarities and differences in teaching in nursery school, kindergarten, and first grade. Bibliography: p. 99-101.
24

Biocides their effects on the growth of nursery stock under different methods of soil management.

Iyer, Jaya Ganpathi, January 1968 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
25

THE EFFECTS OF PROPAGULE SOURCE, SOIL AMENDMENT, AND STOCK TYPE ON THE SURVIVAL AND GROWTH OF GIANT CANE (ARUNDINARIA GIGANTEA (WALT.) MUHL.) ESTABLISHED AS A LOW MAINTENANCE NURSERY

Dalzotto, David 01 May 2013 (has links)
Giant cane [Arundinaria gigantea (Walter) Muhl.] is a native bamboo species that was once widely distributed within bottomland forests and as extensive monotypic stands (canebrakes) along waterways of the southeastern United States. Land conversion to agriculture greatly decreased the distribution of canebrakes. Limited to less than two percent of its historic range, canebrakes are now considered an endangered ecosystem. A 0.24 hectare low maintenance experimental nursery of giant cane was established at Southern Illinois University to examine the effect of planting stock type, soil amendments, and four collection sources on cane survival and growth (number of culms, height and diameter of the tallest culm, spread between furthest two culms) after two growing seasons. All treatments, plus interactions of source by soil, and source by stock, were significantly affected by survival. Collection source significantly affected all growth measurements. Stock type affected the number of culms, height, and spread. Soil amendments did not significantly influence any growth measurement but affected soil chemical properties. The interactions between source and stock affected the number of culms, height, and spread. The interaction between stock and soil significantly affected spread, but no other interactions significantly affected any growth measurements. Of all treatment combinations, the Cypress Creek West source, when grown in containers, tended to have the greatest survival and overall growth after two years, regardless of soil amendments. This study highlights factors that are important in establishing a giant cane restoration nursery. This nursery will also generate growing stock for future canebrake restoration and rehabilitation projects.
26

Evaluating eelgrass (Zostera marina) as a juvenile habitat for rockfishes : contributions of site characteristics and larval supply to juvenile abundance

Jeffery, Sharon 05 1900 (has links)
Seagrass beds are highly valuable ecosystems with a potential nursery function for rockfishes in British Columbia. Understanding how the nursery value of seagrass habitats differs for rockfish species, and what factors create this variability in habitat value, is important for effective conservation planning. In this study, the use of Zostera marina beds in Barkley Sound by juvenile rockfishes (Sebastes spp.) was investigated. Rockfish have been observed in Z. marina beds by many researchers, however, their abundance and distribution between beds has been shown to be variable. The abundance of juvenile rockfishes in five beds was assessed in 2005 and 2006 using visual surveys. Environmental and biological variables that could potentially influence this abundance were measured concurrently. These included supply of settling fish (hereafter “settlers”), biotic and abiotic habitat characteristics. The eelgrass beds that I studied were found to differ significantly in their habitat characteristics, the abundance of settlers arriving to them, as well as the abundance of juvenile recruits in the beds. Sebastes melanops and S. caurinus were found at the sites between June and September. There was no significant relationship between the abundance of settlers arriving at a bed, and the abundance of juveniles using it. However, many of the eleven habitat characteristics investigated were significantly correlated with the abundance of either S. melanops, or S. caurinus. It is likely that these relationships arose from multiple causes which acted both pre- and post-settlement. Habitat features that were identified as correlates with high juvenile abundance value included lower epiphyte biomass, nearness to kelp habitats, lower water temperature, lower shoot density, and higher leaf width. / Science, Faculty of / Botany, Department of / Graduate
27

Strathcona Nursery School : its contributions for working mothers

Stewart, Donald Granville January 1956 (has links)
A survey is being conducted this year (1956) on a national basis, by the Women's Bureau of the Department of Labour, regarding family circumstances of married women. Against this background, a small scale survey has been undertaken of mothers who send their children to Strathcona Nursery School. The Nursery is an important social welfare resource financed largely by the Community Chest and Council of Greater Vancouver, the majority of the clients of this agency arc working mothers, and some are the solo provider for their children. The survey offered the opportunity not only of significant comparitive material, but of at least partial evaluation of the work of this Nursery, in relation both to its immediate district and the city generally. The families served by the Nursery were composed, in January 1956, of thirty-six "normal"(i.e. complete) families and eleven "broken" (i.e. father absent or incapasitated) families. Twenty of these families were sampled, with approximately the same proportion of complete and broken families. Interviews were obtained with the mothers, mostly in the early evening in their homes. A modified form of the schedule employed for the national (Women’s Bureau) survey being used. There was a wide variation in the economic status of the families, although the mothers stated their purpose in working was to earn a living or supplement the family budget. There appeared to be a preoccupation with immediate needs, and little effort to make a long-term evaluation of their position, the effect of the mothers work on the family, or the gains and losses to the children. The majority lived in overcrowded residences, but only an exceptional few were saving for a larger or better houses: a majority were buying more easily obtainable items such as television sets and automobiles. The direct need for the Nursery School is beyond question. It is significant that a high proportion of the mothers live in other parts of the city. There is need for careful consideration, however, of the two-fold function of the Nursery, (a) pre-school education and (b) day care. The agency also has to harmonize (a) its services to the child and (b) its potential service to the family as a whole. Some tentitive recommendations regarding staff personnel include the addition of a social caseworker to the personnel who could act as a liaison between the Nursery and the parents as well as assisting with selection and intake of families. / Arts, Faculty of / Social Work, School of / Graduate
28

Tea Songs

Hubbard, Colton M. 14 July 2005 (has links)
No description available.
29

A study of the carbohydrate and moisture contents of Rhamnus frangula 'Tallhedge' during storage /

Smith, Elton Mansfield January 1967 (has links)
No description available.
30

An ideal place for pre-schooler /

Chow, Tse-yan. January 1997 (has links)
Thesis (M. Arch.)--University of Hong Kong, 1997. / Includes special report study entitled: Architectural impact on children : an ideal place for pre-schooler. Includes bibliographical references.

Page generated in 0.0455 seconds