Defence Science and Technology Group (DSTG) is currently preparing for the launch of the Buccaneer Main Mission (BMM) satellite, the successor to the Buccaneer Risk Mitigation Mission (BRMM). BMM hosts a high-frequency (HF) antenna and receiver to contribute to the calibration of the Jindalee Operational Radar Network (JORN). Verification of the successful deployment and stability of the large HF antenna is critical to the success of the mission. A bespoke deployable optics payload has been developed by DSTG to fulfil the dual purpose of direct verification of the deployed state of the HF antenna and capturing images of the Earth through a rotatable, dual-surfaced mirror and a variable-focus liquid lens. The payload advances research at DSTG in several fields of space engineering, including deployable mechanisms, precision actuation devices, radiation-tolerant electronics, advanced metal polishing and optical metrology. This paper discusses the payload design, material selection, trade-offs considered for the deployable optics payload and preliminary test results.

A thermally-activated micelle consisting of a crystallizable poly(caprolactone), PCL, core and a poly(ethylene glycol), PEG, corona was developed to contain magnetic nanoparticles and anti-cancer agent doxorubicin as well as display a targeting RGD peptide. This system has the potential to target cancer cells, deliver combination hyperthermia and chemotherapy, and offer magnetic resonance imaging contrast. The micelles self-assemble in aqueous solutions and form a crystalline core with a melting transition ranging from 40 to 50 °C, depending on the length of the PCL blocks, with dynamic light scattering showing micelle sizes typically ranging from 20 to 100 nm, depending on block lengths and added drug or nanoparticles. The micelles become unstable as they are heated above their melting point, creating a thermally-activated drug release mechanism. By adding magnetite (Fe3O4) nanoparticles into the PCL core, the micelles can be heated using an externally applied AC magnetic field to induce hyperthermia in combination with the thermally-activated drug release. The polymers and magnetic nanoparticles (MNPs) were synthesized and characterized in our laboratories. The melting transitions of the PCL micelle cores were investigated using microcalorimetry. The heating of nanoparticles and magnetomicelles was conducted using a custom-built hyperthermia coil capable of generating fields of several hundred Oersteds at frequencies ranging from 50 to 450 kHz. Heating of MNPs was maximized at high field intensities. RGD peptides were attached to the PEG corona using maleimide chemistry, and the ability of the RGD-derivatized micelles to target integrin-expressing cells was investigated using fluorescent dye PKH26 to identify the localization of micelles in cultured human kidney (293) cells in vitro. The crystallizable (and meltable) cores in these micelles were designed to overcome drug leakage common in liposome systems and release the drug on demand after a period of time for localization to integrin receptors.

During the final quarter of the nineteenth century, black members of the Methodist Episcopal (ME) Church published a steady stream of anti-Mormonism in their weekly newspaper, the widely read and distributed Southwestern Christian Advocate. This anti-Mormonism functioned as way for black ME Church members to articulate their denomination's distinctive racial ideology. Black ME Church members believed that their racially mixed denomination, imperfect though it was, offered the best model for advancing black citizens toward equality in both the Christian church and the American nation. Mormons, as a religious group who separated themselves in both identity and practice and as a community experiencing persecution, were a useful negative example of the dangers of abandoning the ME quest for inclusion. Black ME Church members emphasized their Christian faithfulness and American patriotism, in contrast to Mormon religious heterodoxy and political insubordination, as arguments for acceptance as equals in both religious and political institutions. At the same time, anti-Mormon rhetoric also proved a useful tool for reflecting on the challenges of African American life, regardless of denominational affiliation. For example, anti-polygamy opened space to comment on the precarious position of black women and families in the post-bellum South. In addition, cataloguing Mormon intellectual, moral, and social deficiencies became a form of instruction in the larger project of black uplift, by which African Americans sought to enter the ranks and privileges of the American middle class. In the end, however, black ME Church members found themselves increasingly segregated within their denomination and in society at large, even as Mormons, once considered both racially and religiously inferior, were welcomed into the nation as citizens and equals.