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  • 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.
1

Investigation into the Short-term Effects of Chipped Branch Wood (CBW) on Soil Fertility, Plant Growth and Soil Microbiology in an Agricultural Context

Mercer, Theresa 09 1900 (has links)
The principal objective of this project was to evaluate the short-term effects of CBW incorporation into soil in terms of soil fertility, plant growth and soil microbiology. Treatments consisted of a control, standard woodchip treatment (incorporation rate of 150m3/ha), woodchip + woodland litter incorporation treatment (woodland litter incorporation of 10-20g/m2), woodchip + fertiliser treatment (KNO3 applied at 50kgN/ha at start and a continuous fertiliser application treatment) and double woodchip treatment. Standard soil NO-3 tests were conducted to determine soil fertility. To assess plant growth and development, plant DW, S:R DW and plant K levels were measured Finally, microbiological analyses were carried out through serial dilutions and plate counts, with in-depth microscopy. Results indicated that there were obvious differences between treatments throughout the study period. In all measurements, woodchip treatments were found to have significantly lower values than the control. The exception to the rule was the WC + fertiliser treatment (continuous complete nutrient fertiliser application), which showed comparable results with the control. The addition of woodland litter did not seem to affect any of the soil fertility, plant growth or microbial measurements. The differences between the unfertilised woodchip treatments and the control were explained by a general nutrient deficiency resulting from a ‘dilution effect’ to soil nutrients by adding woodchips. This was further exacerbated by immobilisation of nutrients from the micro-organisms in the soil.
2

Two Decades of Strengthening CBW Prohibitions: Priorities for the BTWC in the 21st Century

Pearson, Graham S. January 2004 (has links)
Yes
3

The Changing Scientific and Technological Basis of the CBW Proliferation Problem

Kelle, A. January 2007 (has links)
Yes
4

Technology or Taboo?: An Analysis of Emerging Technology Weapons and Weapon Taboos

Wilson, Mia R 01 January 2021 (has links)
Technology tends to evolve over time, leading over things to evolve with it. One example may be the evolution of weapons with technological advancement. When these weapons change, it changes how war is conducted. This paper seeks to delve into the specifics of this phenomena. With technological advancement, the world has seen new threats such as lethal autonomous weapons (LAWs) and cyber weapons. New weapons have been, at times, too threatening. They have created so much stigma around themselves the international community ultimately decided against their use. These weapons may then receive a weapon taboo, discouraging their use. This paper seeks to analyze whether the aforementioned emerging technology weapons – LAWs and cyber weapons – may deserve a taboo. The paper will utilize case studies by examining weapons which were previously given a taboo. By determining why other weapons - specifically chemical and biological weapons (CBWs) and nuclear weapons - received a taboo, this paper will determine whether LAWs and cyber weapons also meet the criteria.

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