Demonstration of a sterilizable solid rocket motor system, addendum

Technical emphasis was placed on characterization of a scaled-up batch of the improved propellant formulation and determination of the effects of dry heat sterilization on propellant integrity and structural response. The grain stress analysis was directed toward tailoring a fully-bonded grain to the calculated propellant allowable stresses and investigating various bond release concepts to relieve stresses incurred in thermal shrinkage following sterilization

Synthesis and alkyne-coupling chemistry of cyclomanganated 1- and 3-acetylindoles, 3-formylindole and analogues

The syntheses are reported of new cyclomanganated indole derivatives (1-acetyl-κO-indolyl-κC2)dicarbonylbis(trimethylphosphite)manganese (2), (1-methyl-3-acetyl-κO-indolyl-κC2)tetracarbonylmanganese (4), (3-formyl-κO-indolyl-κC2)tetracarbonylmanganese (5a) and (1-methyl-3-formyl-κO-indolyl-κC2)tetracarbonylmanganese (5b). The unusually complicated crystal structure of 5b has been determined, the first for a cyclomanganated aryl aldehyde. The preparations of a mitomycin-related pyrrolo-indole and related products by thermally promoted and oxidatively (Me3NO) initiated alkyne-coupling reactions of the previously known complex (1-acetyl-κO-indolyl-κC2)tetracarbonylmanganese (1) are reported for different alkynes and solvents. X-ray crystal structures are reported for the dimethyl acetylenedicarboxylate coupling product of 1 (dimethyl 1-methyl-l-hydroxypyrrolo[1,2a]-indole-2,3-dicarboxylate; 6a), and an unusually-cyclised triple insertion product 8 from the coupling of acetylene with 4, in which a cyclopentadiene moiety is η3-allyl-coordinated to Mn through only one double bond and an exocyclic carbon, but which rearranges on heating to an η5-cyclopentadienyl complex

Daily Practice1: Ethics In Leadership

The classic question, “Should business schools teach ethics?” is not often asked anymore given the drip, drip, drip of business corruption reported in the news. Even skeptics allow that business ethics education could not hurt and might improve the ethics of business leaders. Furthermore, universities, colleges, and business accrediting agencies prominently represent their ethics for all to see in standards, codes, handbooks, and advertisements. They seem to promote ethical conduct at their institutions. But how do faculty and administrators actually behave? And if not ethically, what are the educational lessons new professionals take to the workplace?&nbsp

Video-recording for therapeutic purposes in couple counselling

The challenges of producing fair and respectful relationships sometimes takes couples to counselling. Problematic and taken-for-granted, individualistic, adversarial and gendered discursive practices continue to get in the way of fair and respectful relationships, with studies showing that in heterosexual relationships women are often expected to do most of the work required to maintain and repair couple relationships which continue to centre men’s experiences. When couples get to counselling, counsellors may also struggle to address individualistic and gendered relational processes and, may reproduce them despite their best intentions. In response, narrative therapists work with clients to externalise and deconstruct discursive practices to make visible the operation of power in relationships and to make available other readings, ways of being and identities, which better position members of a couple to collaborate in order to produce solutions. This study employed narrative therapy co-research and video technology in order to investigate the researcher’s own narrative therapy counselling practice with couples. Three couples, all heterosexual, in marriage or marriage-like relationships, were recruited from the researcher’s counselling practice. Together the couples and researcher reviewed and co-researched the video records of the counselling meetings. Practices of co-research with video made visible and unfamiliar some previously unseen and taken-for-granted territories of life. Co-research of these territories generated understandings and proposals for action, which the couples then experimented with and reviewed. As well, the couples all began to imagine how their actions might appear on video and to adjust their actions and thinking to better fit with their values. The video records also provided a text for further deconstructive analysis. Within the counselling, re-membering conversations, taking-it-back practices and definitional ceremonies, were employed and enhanced by using the video in order to support preferred developments and to strengthen the contributions of children, family and communities to the couples’ preferred ways of being. This approach was used to investigate: the ways the couples shared and conducted their conversations in counselling; their parenting; an anger problem; and the sharing of property and income. Ongoing analysis of the video records and transcripts developed and extended the theoretical tools available in the moments of the counselling, producing a richer telling of a practice that was effective at the time. This retelling involved thinking with Derrida and deconstruction as justice in order to cast counselling as an hospitable, collaborative process of co-research which has as its focus addressing justice in the complex, relational, gendered, cultural and contextual territories in which couples’ relationships are played out. The thesis argues that the positioning of counsellor and couples as co-researchers, using hospitable and deconstructive perspectives, greatly reduced conflict and equipped the counsellor and couples to review and research their own experiences, and to collaborate in order to produce more effective problem solving strategies, which addressed their situations and their hopes for justice

Predicting functional properties of milk powder based on manufacturing data in an industrial-scale powder plant

The fundamental science relating key physical and functional properties of milk powder to plant operating conditions is complex and largely unknown. Consequently this paper takes a data-driven approach to relate the routinely measured plant conditions to one vital function property known as sediment in an industrial-scale powder plant. Data from four consecutive production seasons was examined, and linear regression models based on a chosen set of processing variables were used to predict the sediment values. The average prediction error was well within the range of the uncertainty of the laboratory test. The models could be used to predict the effect of each individual plant variable on the sediment values which could be beneficial in quality optimisation. In addition the choice of the training data set used to compute regression coefficients was studied and the resultant regression models were compared to alternative PLS models built on the same data

Rapid Particle Size Measurements Used as a Proxy to Control Instant Whole Milk Powder Dispersibility

Characterising the dispersion of instant whole milk powder (IWMP) into water is a complex dissolution measurement that is both manual and laborious so is normally carried out post production at industrial dryers. However, this means there is no immediate feedback so the functional quality cannot be controlled in real-time. This work proposes the idea of applying a simpler, surrogate measurement that can be implemented in the plant in order to have useful real-time information regarding the quality of the product being produced. This we term is a proxy measurement. The functional property dispersibility was used as a case study, with particle size being investigated as a proxy at an industrial IWMP plant. It was found that particle sizing could be used to provide useful information regarding the powder, with the proxy measurement being able to predict in-specification powder 97% of the time. Although the test was not as effective for predicting out-of-specification results, with an false-positive rate of 50%, the fact that out-of-specification events are rare in the industry setting means that the overall proxy measurement is still between 78—87 % accurate, and thus useful for predicting the dispersibility quality of the IWMP. Furthermore, these proxy measurements can then be combined with on-line plant information using multivariate techniques to further improve their accuracy and understand how the quality can be controlled by changing the plant processing conditions

VLA Spectral Line Observations of a Shocked Cold H II Region in G70.7+1.2

We have observed the molecular globule G70.7+1.2 at 1375 MHz using the C configuration of the VLA, and have imaged a peculiar H168α recombination line detected at the Arecibo radio telescope. The narrow width of the recombination line (Δv ~ 3 km s-1) indicates gas cooler than 185 K and suggests that the globule harbors the coldest known H II region. Previous work showed that the recombination line came either from newly ionized gas outside a bow shock produced by supersonic motion of an early-type star through the molecular globule, or from a cold H II region inside the globule. The 20'' angular resolution of the VLA image of G70.7+1.2 was sufficient to resolve the separation between the nonthermal radio-emitting bow shock and the thermal H II region. The spectral line images show that the radio recombination line comes from cold gas near the outer boundary of the bow shock and that the line intensity is enhanced by stimulated amplification of the nonthermal continuum emanating from the bow shock