Studies on the Processing Methods for Extraterrestrial Materials

The literature was surveyed for high temperature mass spectrometric research on single oxides, complex oxides, and minerals in an effort to develop a means of separating elements and compounds from lunar and other extraterrestrial materials. A data acquisition system for determining vaporization rates as a function of time and temperature and software for the IEEE-488 Apple-ORTEC interface are discussed. Experimental design information from a 1000 C furnace were used with heat transfer calculations to develop the basic design for a 1600 C furnace. A controller was built for the higher temperature furnace and drawings are being made for the furnace

Supporting school improvement: The development of a scale for assessing pupils' emotional and behavioural development

Available online via the Taylor & Francis Group site by subscription

Indicators of sustainable development in civil aviation

Civil aviation provides for large scale, rapid, safe and reliable transport over long distances. In the last half of the 20th century, the reliability of air transport has increased, safety has improved and costs have reduced: the volume of civil aviation has greatly increased and demand continues to rise. The social and economic benefits arising from aviation are substantial while its environmental costs are significant and increasing: with current technologies aviation is considered to be essentially unsustainable. Sustainable development as a concept, arose in the latter part of the 20th century. It may be regarded as a journey of changes through time, a journey navigating a wide range of changes in technology and behaviour thought to be needed to move towards a better level of sustainability. There is a need to apply the principles of sustainable development to the practice of the civil aviation industry. The research on which this thesis is based draws on sustainable development literature, general systems theory and quality principles to derive a holistic and systemic sustainable development model, and a methodology for deriving indicators of sustainable development. These are then applied to the civil aviation system, to select and construct indicators of sustainable development in civil aviation. The indicator selection process is participative, and seeks the views of stakeholders of UK civil aviation. Stakeholders are asked, via a Delphi study, to give their views on the meaning of sustainable aviation, and on the most important aspects of sustainable development in civil aviation. The research proposes a set of 29 indicators for sustainable development in civil aviation, including institutional and regulatory indicators. The research findings suggest that, amongst UK civil aviation stakeholders, there is some consensus on the important sustainability issues facing civil aviation, and on their choice of indicators. There is little understanding of the meaning of sustainable aviation, and disagreement on policies to adopt in favour of sustainable development in aviation. Amongst stakeholders from civil aviation organisations, there is strong opposition to regulatory or economic policies in favour of sustainable development. While the safety of civil aviation is institutionalised, there is evidence to suggest that opposition to other aspects of sustainable development is embedded in the regulatory and operational organisations of civil aviation in the UK.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Contraceptive and Condom Use Adoption and Maintenance: A Stage Paradigm Approach

The Transtheoretical Model of Behavior Change was examined for its applicability to contraceptive and condom use adoption and maintenance using N = 248 heterosexually active college-age men and women. The model posits that individuals do not go directly from old behaviors to new behaviors, but progress through a sequence of stages: precontemplation, contemplation, preparation, action, and maintenance. The stages of change offer a temporal dimension that provides information regarding when a particular shift in attitudes, intentions, and behavior may occur. The model also postulates a set of constructs that act as sensitive intervening or outcome variables—the pros and cons of change and self-efficacy. The results demonstrated that individuals were furthest along in the stages of change for general contraceptive use, followed closely by condom use with other (e.g., casual) partners, and then condom use with main partners. Although no sex differences were found for the stages for the three separate contraceptive behaviors, males and females differed on the pros and cons and levels of self-efficacy when engaging in intercourse with the two types of partners. MANOVA/ANOVA results indicated that the relationship between stages and other constructs follows predicted patterns suggesting that the transtheoretical model may provide a useful framework or paradigm for understanding contraceptive and condom use behavior

The photochemistry of some donor-acceptor systems

Irradiation of Donor-Acceptor systems often leads to the formation of radical cation-radical anion pairs (via photoinduced electron transfer) and subsequent ground state reactions of these ion pairs can give rise to reaction products. We have been partlclarly interested in two electron deficient aryl halides 3,4, 5,6-tetrachlorophthalonitrile (TCPN) and 3,4,5,6-tetrachloro-N-methylphthalimide (C14NMP) as possible electron acceptors in such photoinduced electron transfer reactions. Their photochemical reactions with various potential donor molecules (including several aromatic hydrocarbons and a range of alkenes) have been studied. Several different modes of reactivity were observed and these have been discussed in relation to a possible electron transfer mechanism being operative