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Observations of the 21 cm signal face significant challenges due to bright astrophysical foregrounds that are several orders of magnitude higher than the brightness of the hydrogen line, along with various systematics. Successful 21 cm experiments require accurate calibration and foreground mitigation. Errors introduced during the calibration process such as systematics can disrupt the intrinsic frequency smoothness of the foregrounds, leading to power leakage into the Epoch of Reionisation window. Therefore, it is essential to develop strategies to effectively address these challenges. In this work, we adopt a stringent approach to identify and address suspected systematics, including malfunctioning antennas, frequency channels corrupted by radio frequency interference, and other dominant effects. We implement a statistical framework that utilises various data products from the data processing pipeline to derive specific criteria and filters. These criteria and filters are applied at intermediate stages to mitigate systematic propagation from the early stages of data processing. Our analysis focuses on observations from the Murchison Widefield Array Phase I configuration. Out of the observations processed by the pipeline, our approach selects 18%, totalling 58 h, that exhibit fewer systematic effects. The successful selection of observations with reduced systematic dominance enhances our confidence in achieving 21 cm measurements.
In response to the COVID-19 pandemic, we rapidly implemented a plasma coordination center, within two months, to support transfusion for two outpatient randomized controlled trials. The center design was based on an investigational drug services model and a Food and Drug Administration-compliant database to manage blood product inventory and trial safety.
Methods:
A core investigational team adapted a cloud-based platform to randomize patient assignments and track inventory distribution of control plasma and high-titer COVID-19 convalescent plasma of different blood groups from 29 donor collection centers directly to blood banks serving 26 transfusion sites.
Results:
We performed 1,351 transfusions in 16 months. The transparency of the digital inventory at each site was critical to facilitate qualification, randomization, and overnight shipments of blood group-compatible plasma for transfusions into trial participants. While inventory challenges were heightened with COVID-19 convalescent plasma, the cloud-based system, and the flexible approach of the plasma coordination center staff across the blood bank network enabled decentralized procurement and distribution of investigational products to maintain inventory thresholds and overcome local supply chain restraints at the sites.
Conclusion:
The rapid creation of a plasma coordination center for outpatient transfusions is infrequent in the academic setting. Distributing more than 3,100 plasma units to blood banks charged with managing investigational inventory across the U.S. in a decentralized manner posed operational and regulatory challenges while providing opportunities for the plasma coordination center to contribute to research of global importance. This program can serve as a template in subsequent public health emergencies.
OBJECTIVES/GOALS: To facilitate the development of innovative injection products by providing translational researchers with a regulatory and manufacturing road map for producing small batch sterile products for Phase 1 research use. To leverage recent AMC investments in facility improvements and pharmacy training in the areas of sterile product production, testing, and environmental controls, that can be used to support production of phase 1 clinical trial supplies METHODS/STUDY POPULATION: Searching and organizing relevant data and information from web portals and databases in the following: areas: FDA, EMA, USP regulations, regulatory science, pharmaceutical formulation and analytics, supply vendors, analytical testing laboratories, and product testing laboratories. Present the information using a user friendly format including flow charts and development timelines, taking the perspective of the translational investigator. RESULTS/ANTICIPATED RESULTS:
Choosing AMC resources vs outside consultants and vendors, leveraging local resources where possible
Qualifying and monitoring suppliers, testing laboratories, in-house departments, and Contract Drug Manufacturing Organizations (CDMO)
Bringing together the deliverables for the IND CMC section
Where and how to leverage available products and science to simplify safe and reliable production
DISCUSSION/SIGNIFICANCE OF IMPACT: Use and utility of injectable drug products, both small molecule and biologics, is growing rapidly, and is projected to continue to escalate well into the next decade. This is due not only to advances in medicine, but also to improvements in AMC-based sterile product production, and a better understanding of small batch manufacturing methods. All three trends align in academic medical centers (AMC) and can be utilized by translational researchers, if they can understand the potential and regulatory requirements.
Contact metamorphism in the aureole of the Easky adamellite produced andalusite at the expense of regional staurolite, kyanite, and garnet. In the inner aureole sillimanite and K-feldspar also grew. Cordierite is only rarely present. Conditions of metamorphism in the inner aureole have been deduced from five independent criteria as 595 ± 30 °C and 2.5 ± 0.5kb. The nearby Lough Talt adamellite was emplaced at slightly higher pressures. Some aureole rocks have undergone oxidation with conversion of regional garnet to magnetite and andalusite. The reacting assemblage buffered ƒO2 near 10−17 bars. It is inferred that oxidation was caused by movement of H2O from the country rocks into the intrusion.
Why has Australia not followed Canada, New Zealand and the United Kingdom in adopting a formal bill of rights at the national level? We argue that the Australian Constitution has made the difference. The Constitution has underpinned a comparatively strong parliamentary check on the executive, weakening the rationale for a bill of rights and impeding legislative initiatives towards this end; thwarted the drive for a constitutional bill of rights; and helped delegitimize statutory approaches to a bill of rights in general and the “dialogue model” in particular. The article ultimately questions the notion that a common approach to rights protection can apply across Westminster democracies.
A trio of publications made 1964 an auspicious year for historical population studies. Hollingsworth’s innovative reconstruction of the demography of the British peerage over four centuries linked information on birth, marriage and death for a clearly defined and well-documented social group. Lawton deployed census returns for Great Britain in 1801 to map the distribution of population across the entire island at the earliest date for which comprehensive and relatively reliable data are available. And, in Tenure and mobility, Raftis made pioneering use of manorial court rolls to reconstitute the social and demographic experience of latemedieval customary tenants. That same year, Wrigley and Laslett founded the Cambridge Group for the History of Population and Social Structure (CAMPOP), dedicated primarily to researching the demographic history of England. Then in 1965, in The world we have lost, Laslett explored many of the themes that CAMPOP researchers would subsequently investigate and in 1966, reconstitution studies were launched in earnest with the appearance of Wrigley’s path-breaking demographic analysis of Colyton (Devon) from 1541 to 1871.
Scholarly priorities quickly shifted from description of population trends and patterns to analysis of demographic behaviour, with a corresponding change of focus from national populations to individual communities and social groups. Medievalists responded with a spate of manorial case studies. Thus, Razi’s 1980 reconstruction of social and demographic trends on the manor of Halesowen (Worcestershire) from 1270 to 1400 explicitly attempted to achieve with court rolls the kind of analytical insights into individual life-cycle decisions and actions which early modernists were demonstrating could be obtained from parish registers. Henceforth, aggregate studies, such as Wrigley and Schofield’s Population history of England, would be painstakingly constructed from the bottom up based on detailed microstudies and individual reconstitutions. The methodological rigour demanded by this approach meant that historical demography shed the popular appeal with which Laslett had endowed it and became a technical and highly specialised subject.
The earlier enterprise to quantify and map the country’s population at benchmark points in time, championed above all by Darby, fell out of favour. In any case, its main tasks had largely been accomplished (or so it then seemed). The first British censuses had been mapped, albeit at the scale of English and Welsh registration districts and Scottish counties, by Lawton.