Economic position and occupational segregation in the 1990s: A comparison of the ONS Longitudinal Study and the 1958 National Child Development Study

This paper has two aims. The first is to examine the comparability of the 1958 British Birth Cohort Study, known as the National Child Development Study (NCDS) and the Office for National Statistics (ONS) Longitudinal Study (LS), in terms of the information they provide about the employment profile of their respective samples.The second aim is to describe changes in occupational segregation in England and Wales in the decade between 1991 and 2000/2001. By using the longitudinal data contained in both the NCDS and the LS it is possible to examine not only the aggregate changes in occupational segregation, but also individual transitions between different types of occupations characterised according to the percentage of women working within the occupation

Multiple arterial embolization from left atrial myxoma in a Maltese boy

Atrial myxoma is rare in adults and even rarer in children. In this article the author describes. The presentation may be with embolic, obstructive or constitutional symptoms, which may be dramatic and life-threatening. The case of a 12 year old Maltese boy with left atrial myxoma with multiple simultaneous arterial embolism in upper and lower limbs is described in this article.peer-reviewe

Analysis and computations for a model of quasi-static deformation of a thinning sheet arising in superplastic forming

We consider a mathematical model for the quasi-static deformation of a thinning sheet. The model couples a first-order equation for the thickness of the sheet to a prescribed curvature equation for the displacement of the sheet. We prove a local in time existence and uniqueness theorem for this system when the sheet can be written as a graph. A contact problem is formulated for a sheet constrained to be above a mould. Finally we present some computational results

The action of systemic aphicides on aphids and their anthocorid predators

Imperial Users onl

High-resolution electrochemical STM of redox metalloproteins

Electrochemical studies of redox active metalloproteins have become an increasingly fruitful area of study in recent years, particularly with the single-molecule resolution capability of electrochemical scanning tunnelling microscopy (EC-STM) which provides both imaging and current-voltage spectroscopy under bipotentiostatic control. In this review, some of the most exciting advances in recent years are outlined, and directions for future research are considered

Modelling and simulation of cell migration in heterogeneous media

Cell motility is a complex process comprising, among others, cytoskeletal remodelling and growth, active force generation, chemical transport and reaction of multiple substances inside and outside the cell as well as on the cell membrane, anisotropic material behavior of the cell and of the extracellular matrix (ECM), and proteolytic cleavage of the ECM. We are working on an evolving finite element based computational framework that is able to incorporate models and methods for all the key features of cell motility. The approach exploits a mesoscopic point of view and aims at a comprehensive 3D model allowing for the simulation of cell motility at reasonable computational costs. In the presentation we will first sketch the overall framework, addressing all the respective models and methods, and will then focus on some essential subunits

DEACCESSIONING RELATIONSHIPS: THE ROLE OF ACADEMIC MUSEUMS IN MODERN POSTSECONDARY EDUCATION

The purpose of this qualitative exploratory study was to examine the role of academic museums in modern American postsecondary education. This research examined the relationships developed by academic museums in support of the mission of their parent institutions with special attention to the impact of the sale of donated objects from the museum collection for the purpose of relief from financial exigency. The study included document review, interviews, and reflexive notes. The four thematic findings of this exploratory study depict an academic museum as a complex entity within its parent institution that has inward-facing and outward-facing components which support the institutional mission. The inward role includes direct contact with students, support of faculty instruction, service learning, and incorporation of object-based learning on an interdisciplinary level. The outward role of the academic museum provides community education programs, cultural events, and connection opportunities for donors, as well as access to diverse communities. A third theme, governance, suggests that reporting lines can be complex depending on the parent institution and may have a major impact on the museum’s survival. A final theme that intersected the three previous themes is the ongoing need in every relationship to define the purpose of the museum and the reason why a museum maintains a collection. This study determined that the museum’s standing as an academic unit should be considered more carefully. This study was contextualized by two major global events: the Covid-19 pandemic that forced closures of museums and campuses starting in March of 2020 and the racial justice and equity protests that began in the summer of 2020. The Covid-19 pandemic forced a reconsideration of how museums connect with people. The diversity and equity issues that occurred en masse at universities across the United States are universally supported by museum leadership while also resulting in the admission of a need for decolonization of the academic museum and more intense equity measures in museum management. The implications of these events on the findings, as well as recommendations for future research are also discussed

Acoustic test of a model rotor and tail rotor: Results for the isolated rotors and combined configuration

Acoustic data from a model scale main rotor and tail rotor experiment in the NASA Langley 14 by 22 Foot Subsonic Tunnel are presented for the main rotor and trail rotor in isolation and for the two rotors operating together. Results for the isolated main rotor show the importance of the rotor flapping conditions on mid-frequency noise content. High levels of main rotor retreating side blade-vortex interaction noise are shown to radiate downstream of the model. The isolated tail rotor noise results show the dominance of harmonic noise in the thrusting direction. The occurrence of tail rotor broadband noise is seen by the broadening of the tail rotor harmonics and is attributed to fuselage wake turbulence. The combined main and tail rotor data are presented to show the dominance of each rotor's different noise sources at different directivity locations

Detection of benzimidazole carbamates and amino metabolites in liver by surface plasmon resonance-biosensor

This research was funded by the Irish Department of Agriculture, Fisheries and Food under the Food Institutional Research Measure as part of the National Development Plan (Project 05/R&D/TN/355)peer-reviewedTwo surface plasmon resonance (SPR) biosensor screening assays were developed and validated to detect 11 benzimidazole carbamate (BZT) and four amino-benzimidazole veterinary drug residues in liver tissue. The assays used polyclonal antibodies, raised in sheep, to detect BZTs and amino-benzimidazoles. A modified Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction method was developed to isolate benzimidazole carbamate residues. Liver samples were extracted using an acetonitrile extraction method. BZTs were purified by dispersive solid phase extraction (d-SPE) using C18 sorbent. Residues of amino-benzimidazoles were effectively cleaned-up using a simple cyclohexane defatting step. The assays were validated in accordance with the performance criteria described in 2002/657/EC. The BZT assay limit of detection was calculated to be 32 μg kg−1, the detection capability (CCβ) was determined to be 50 μg kg−1 and the mean recovery of analytes was in the range 77–132%. The amino-benzimidazole assay limit of detection was determined to be 41 μg kg−1, the CCβ was determined to be 75 μg kg−1 and analyte recovery was in the range 103–116%. Biosensor assay performance was tested by analysing liver tissue from animals treated with benzimidazole drugs and comparing the results with an ultra high performance liquid chromatography tandem mass spectrometry (UHPLC–MS/MS) confirmatory method. All non-compliant samples were identified using the biosensor assays.Department of Agriculture, Food and the Marin