DDT in the tropics: The impact on wildlife in Zimbabwe of ground spraying for Tsetse fly control

Acclaimed less than twenty-five years ago as the greatest chemical ever discovered, DOT has been instrumental in changing the course of history for many nations. Yet today, with the realization that its residues are persistent and can accumulate in the environment and man himself, DOT pollution has become a major concern of the western world. Public agitation has led to policy decisions which take little account of the risks and benefits of continued use, particularly for less-developed countries. DDT in the Tropics presents the results and conclusions of four years of research in Zimbabwe. The study is the first to assess the impact of DOT ground-spraying on animal populations in tropical ecosystems, and is also one of the most comprehensive studies of DOT undertaken anywhere. Consequently, the findings can contribute significantly to the development of a rational policy on the use of DOT in the Tropics. The organization of the text reflects the different needs of its potential readers. The Scientific Report can be read as an uninterrupted narrative covering the investigation of each component group in the system for those who need a sound background knowledge. Readers requiring greater detail will find experimental techniques and results included in the numbered boxes within each chapter. Finally, those involved in policy planning and implementation will be most interested in the overview given by the opening Environmental Statement

Impact and collisional processes in the solar system

As impact cratered terrains have been successively recognized on certain planets and planetary satellites, it has become clear that impact processes are important to the understanding of the accretion and evolution of all solid planets. The noble gases in the normalized atmospheric inventories of the planets and the normalized gas content of meteorites are grossly similar, but demonstrate differences from each other which are not understood. In order to study shock devolatilization of the candidate carrier phases which are principally thought to be carbonaceous or hydrocarbons in planetesimals, experiments were conducted on noble gase implantation in various carbons: carbon black, activated charcoal, graphite, and carbon glass. These were candidate starting materials for impact devolatilization experiments. Initial experiments were conducted on vitreous amorphous carbon samples which were synthesized under vapor saturated conditions using argon as the pressurizing medium. An amino acid and surface analysis by laser ionization analyses were performed on three samples of shocked Murchison meteorite. A first study was completed in which a series of shock loading experiments on a porous limestone and on a non-porous gabbro in one and three dimensions were performed. Also a series of recovery experiments were conducted in which shocked molten basalt a 1700 C is encapsulated in molybdenum containers and shock recovered from up to 6 GPa pressures

Probing the magnetic ground state of the molecular Dysprosium triangle

We present zero field muon spin lattice relaxation measurements of a Dysprosium triangle molecular magnet. The local magnetic fields sensed by the implanted muons indicate the coexistence of static and dynamic internal magnetic fields below $T^* ~35$ K. Bulk magnetization and heat capacity measurements show no indication of magnetic ordering below this temperature. We attribute the static fields to the slow relaxation of the magnetization in the ground state of Dy3. The fluctuation time of the dynamic part of the field is estimated to be ~0.55 $\mu$s at low temperaturesComment: 5 pages, 5 figures, accepted for publication in Phys. Rev.

Why Referees Stay in the Game

Current trends indicate the number of qualified sports officials continues to dwindle. Therefore, this research sought to better understand reasons for initial entry, continuation, and potential discontinuation with officiating, while also identifying problematic issues, and potential solutions. Content analysis was utilized to examine five open-ended online survey responses from 2,485 referees. The results indicate that Enjoyable Affiliation (58%) and Remuneration (14%) were key to referees becoming involved in officiating. Those two themes, Enjoyable Affiliation (75%) and Remuneration (14%), were also identified as important to retaining officials. Physical Limitations were mentioned by 58% of the respondents regarding why they plan to discontinue. In terms of the most problematic issues, referees most frequently indicated Abuse (42%) and Administrative Issues (20%). Lastly, findings suggest the best ways to recruit and retain officials are to Provide Mentors and Training (32%), Market to Young People (23%), and Increase Pay (19%). Practical implications and strategies that include attracting more women, underrepresented ethnicities, and young people into sports officiating are provided

Why Referees Stay in the Game

Current trends indicate the number of qualified sports officials continues to dwindle. Therefore, this research sought to better understand reasons for initial entry, continuation, and potential discontinuation with officiating, while also identifying problematic issues, and potential solutions. Content analysis was utilized to examine five open-ended online survey responses from 2,485 referees. The results indicate that Enjoyable Affiliation (58%) and Remuneration (14%) were key to referees becoming involved in officiating. Those two themes, Enjoyable Affiliation (75%) and Remuneration (14%), were also identified as important to retaining officials. Physical Limitations were mentioned by 58% of the respondents regarding why they plan to discontinue. In terms of the most problematic issues, referees most frequently indicated Abuse (42%) and Administrative Issues (20%). Lastly, findings suggest the best ways to recruit and retain officials are to Provide Mentors and Training (32%), Market to Young People (23%), and Increase Pay (19%). Practical implications and strategies that include attracting more women, underrepresented ethnicities, and young people into sports officiating are provided

Development of the Referee Retention Scale

Building upon the current sport officiating research, this study puts forth the Referee Retention Scale (RRS). Through a three-phase process, the researchers developed a valid and reliable scale to predict sport officials’ job satisfaction and intention to continue. The first phase consisted of instrument development, while the second phase included field testing of referees (n=253). After EFA and Rasch analysis, the resultant refined scale from phase 1 and 2 was then administered to 979 referees in phase 3. Phase 3 results using CFA indicated that the 7-factor, 28-item RRS was a valid and reliable tool for measuring and predicting referee retention. The results highlight the importance of considering a variety of factors associated with the referee experience, which include Administrator Consideration, Intrinsic Motives, Mentoring, Remuneration, Sense of Community, Lack of Stress, and Continuing Education. A discussion on how the RRS can help administrators manage and retain sport officials is included

Sport development programmes for Indigenous Australians: innovation, inclusion and development, or a product of 'white guilt'?

Under the legacy of neoliberalism, it is important to consider how the indigenous people, in this case of Australia, are to advance, develop and achieve some approximation of parity with broader societies in terms of health, educational outcomes and economic participation. In this paper, we explore the relationships between welfare dependency, individualism, responsibility, rights, liberty and the role of the state in the provision of Government-funded programmes of sport to Indigenous communities. We consider whether such programmes are a product of 'white guilt' and therefore encourage dependency and weaken the capacity for independence within communities and individuals, or whether programmes to increase rates of participation in sport are better viewed as good investments to bring about changes in physical activity as (albeit a small) part of a broader social policy aimed at reducing the gaps between Indigenous and non-Indigenous Australians in health, education and employment

Combined cognitive–behavioural and mindfulness programme for people living with dystonia : a proof-of-concept study

Objectives To design and test the delivery of an intervention targeting the non-motor symptoms of dystonia and pilot key health and well-being questionnaires in this population. Design A proof-of-concept study to test the delivery, acceptability, relevance, structure and content for a 3-day group residential programme for the management of dystonia. Setting Participants were recruited from a single botulinum toxin clinic. The intervention was delivered in the community. Participants 14 participants consented to take part (2 withdrew prior to the starting of intervention). The average age was 60 years (range 44–77), 8 of whom were female. After drop-out, 9 participants completed the 3-day programme. Intervention A 3-day group residential programme. Primary and secondary outcome measures Process evaluation and interviews were carried out before and after the intervention to explore participant's views and expectations, as well as experiences of the intervention. Select questionnaires were completed at baseline, 1-month and 3-month follow-up. Results Although participants were not sure what to expect from the programme, they found it informative and for many this together with being in a group with other people with dystonia legitimised their condition. Mindfulness was accepted and adopted as a coping strategy. This was reflected in the 1-month follow-up. Conclusions We successfully delivered a 3-day residential programme to help those living with dystonia manage their condition. Further improvements are suggested. The quantitative outcome measures were acceptable to this group of patients with dystonia