• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 175
  • 41
  • 22
  • 16
  • 16
  • 16
  • 16
  • 16
  • 16
  • 13
  • 10
  • 8
  • 6
  • 3
  • 2
  • Tagged with
  • 370
  • 44
  • 41
  • 41
  • 38
  • 36
  • 36
  • 30
  • 28
  • 26
  • 25
  • 22
  • 19
  • 19
  • 18
  • 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.
41

Studies of the vegetation on the peat lands of Dane County, Wisconsin

Frolik, Anton Lawrence. January 1936 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1936. / Typescript. Includes abstract and vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 111-113).
42

Ecologic studies on poor mire vegetation in the Torneträsk area, northern Sweden.

Sonesson, Mats, January 1970 (has links)
Thesis - University of Lund. / Bibliography: p. 8.
43

Pollen analysis of a post glacial peat deposit in Vancovuer

Kiss, Gyula Karoly January 1961 (has links)
The main purpose of this study is to reconstruct the Post Glacial vegetational and climatic changes indicated by the pollen grains and spores preserved in the Camosun peat bog. Utilizing this knowledge an attempt is made to define the approximate age of the earliest microfossil deposits of this bog by comparison of the results with those of Hansen (1947). A single sample core was taken from the Camosun bog. The core was divided into ten centimetre channel specimens, each of which was macerated using a new technique. The macerated material, including the microfossils were mounted on slides, and percentage frequencies were obtained for the microfossils in each specimen. The frequency results were interpreted and conclusions drawn on the basis of the kind and number of microfossils recovered. It is concluded that the primary forest was composed mainly of Pinus, which changed later into a forest characterized by Pseudotsuga and Tsuga. Thus the climate appears to have changed from warm and dry to cooler and more moist. The approximate age of the first deposits is defined as ranging between four and six thousand years. Finally various suggestions for future work are presented, including proposals for future studies in the same bog, and methods for the improvement of palynological techniques in general. / Science, Faculty of / Botany, Department of / Graduate
44

Strain rate effects in one-dimensional consolidation of peat

Baig, Khaliq Riaz January 1970 (has links)
A series of one-dimensional strain rate controlled consolidation tests were performed on remolded peat to establish the void ratio - effective stress - strain rate relationship for this soil. The relationship was found to be independent of the size of sample. In addition, the void ratio - permeability relationship was also determined and was found to be independent of both the strain rate and the size of the sample. From these relationships the behaviour of any size sample subjected to incremental loading was predicted in terms of the time - settlement and the time - pore pressure curves. These predictions included both 'primary' and 'secondary' settlement. The comparison of observed and predicted time - settlement and time - pore pressure curves was found to be in close agreement. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate
45

DEL15 MurielPeats-1

Carnie, Andrew H., Clayton, Ian January 2016 (has links)
Muriel is at the pit on the side of road to Glendale describing how her family used to cut peat. This is the first of two of descriptions. Because we had a technical problem we did a description of cutting and stacking the peat again on the way home from Glenadale. Those files are called MurielPeats-2
46

Synthesis gas production from peat using a steam plasma

Stuart, Paul R. (Paul Réne) January 1984 (has links)
No description available.
47

Decomposition products of carbon-14 labelled rye tissues in a peat profile /

Chahal, Kulwant Singh January 1963 (has links)
No description available.
48

A study of the components of the lipid fraction of rifle peat /

Braids, O. C. January 1966 (has links)
No description available.
49

Observations on the ecology of protozoa associated with sphagnum /

Chacharonis, Peter January 1954 (has links)
No description available.
50

Rates of primary production and decomposition in subarctic peatlands

Bartsch, Ingrid. January 1983 (has links)
No description available.

Page generated in 0.0369 seconds