In the context of the telegraphic distribution of Greenwich time, while the early experiments, the roles of successive Astronomers Royal in its expansion, and its impacts on the standardization of time in Victorian Britain have all been evaluated, the attempts of George Biddell Airy and his collaborators in constructing the Royal Observatory's time signals as the authoritative source of standard time have been underexplored within the existing historical literature. This paper focuses on the wide-ranging activities of Airy, his assistant astronomers, telegraph engineers, clockmakers and others, which served to increase the reliability of the Royal Observatory's time service between the 1850s and 1870s. Airy and his collaborators aimed to mechanize and automate their telegraphic time distribution system in order to improve its accuracy and reliability. The accomplishment of such technological innovations was disseminated via public lectures, journal articles and correspondence with experts, secondary distributors of standard time and the general public. These communications were used to build public trust in the Greenwich time service. However, the unexplored archival material used in the present paper provides fresh insight into the unstable nature of the Greenwich time system, including its clear limits in terms of its scale of automation and degree of accuracy.
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http://dx.doi.org/10.1017/S0007087419000852 | DOI Listing |
Bioengineering (Basel)
January 2025
Department of Chemical and Environmental Engineering, University of Nottingham, Broga Road, Semenyih 43500, Selangor, Malaysia.
In this study, a pilot-scale in-vessel composter was used to treat a mixture of industrial biowaste, with soybean curd residue and saw dust as the major substrates. The composter is capable of treating up to 350 tons/month of waste, producing up to 150 tons/month of high-quality compost within a retention time of 7-10 days. The final compost has an average nitrogen-phosphorus-potassium content of 6%, moisture content of 28%, pH of 6.
View Article and Find Full Text PDFEcol Evol
January 2025
Wildlife Research Division Environment and Climate Change Canada Ottawa Ontario Canada.
For birds breeding in the Arctic, nest success is affected by the timing of nest initiation, which is partially determined by local conditions such as snow cover. However, conditions during the non-breeding season can carry over to affect the timing of breeding. We used tracking and breeding data from 248 individuals of 8 species and subspecies of Arctic-breeding shorebirds to estimate how the timing of nest initiation is related to local conditions like snowmelt phenology versus prior conditions, measured by the timing and speed of migration.
View Article and Find Full Text PDFMult Scler
January 2025
NYU MS Comprehensive Care Center, Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA.
Background: In the DISCOMS (DISCOntinuation of disease-modifying therapies (DMTs) in multiple sclerosis (MS)) randomized clinical trial, we could not demonstrate that discontinuing MS DMTs in older, stable adults was not inferior to continuing DMTs. Relapses were rare in both groups, and most new disease activity was one to two new brain magnetic resonance imaging (MRI) lesions unassociated with clinical changes.
Objective/aims: Describe results of the DISCOMS extension study.
BMC Neurol
January 2025
Real World Solutions, IQVIA, 2400 Ellis Road, Durham, NC, 27703, USA.
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Methods: This US-based, cross-sectional survey study included patients with MS (≥ 18 years) who self-administered ofatumumab using the Sensoready device within the previous 12 months of the survey. Eligible patients were administered a 30-item de novo questionnaire that focused on overall device satisfaction, device usability, convenience/flexibility for travel with the device, user confidence, injection experience, and time to administer the injection.
J Clin Hypertens (Greenwich)
January 2025
Department of Geriatrics, Medical Center on Aging of Shanghai Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
The aim of this study was to explore whether 24-h ambulatory central (aortic) blood pressure (BP) has an advantage over office central aortic BP in screening for hypertension-mediated target organ damage (HMOD). A total of 714 inpatients with primary hypertension and the presence of several cardiovascular risk factors or complications involving clinical HMOD were enrolled. Twenty-four hour central aortic BP was measured by means of a noninvasive automated oscillometric device (Mobil-O-Graph).
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