904 research outputs found
The General Practice of Art Law
Art law is a general specialty since what we call art law is always some other type of law in the first instance - contract law, copyright law, tax law, estate and trust law, constitutional law - which happens to involve artists or art work
MgSO4 + zeolite-based composite thermo-chemical energy stores (TCES) integrated with vacuum flat plate solar thermal collectors (VFPC) for seasonal thermal energy storage
Thermochemical Energy Storage offers a solution for storing heat indefinitely almost loss free
Iron (III) Salalen Complexes for the Polymerisation of Lactide
Herein, we report the preparation and characterisation of iron (III) salalen complexes, with variation of ligand substituents and backbone investigated. Six new complexes were prepared and characterised by elemental analysis, mass spectrometry and X-ray crystallography. These complexes have been applied for the ring opening polymerisation (ROP) of rac-lactide in propylene oxide. Fe(1)Cl was found to have a moderate isotactic preference (Pm = 0.75 – 0.80) and demonstrated good molecular weight control in solution (Đ = 1.02 – 1.18). Fe(2-7)Cl were also active for ROP and activities could be related to ligand structure
Tuning the thiolen: Al(III) and Fe(III) thiolen complexes for the isoselective ROP of rac-lactide
A series of five iron and aluminum complexes bearing {ONSO} imine thiobis(phenolate) ligands have been prepared and applied to the ring-opening polymerization (ROP) of rac-lactide. Fe(1)Cl produced polylactide with a very strong isotactic bias (Pm = 0.79–0.89) and well-defined melting temperatures (Tm = 154–181 °C). The polymers have been characterized by a combination of 1H{1H} NMR, 13C{1H} NMR, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, and powder X-ray diffraction. Fe(1)Cl has also been shown to activate CO2, at atmospheric pressure and concentrations, to form a carbonato-bridged dimer. Fe(2–5)Cl and Al(1–5)Me were also active for lactide ROP demonstrating good-molecular-weight control (Đ = 1.04–1.12) and moderate isotactic preference (Pm = 0.56–0.72), with polymerization outcome correlating with ligand substituents
Effective headache management in the aneurysmal subarachnoid patient: a literature review
Subarachnoid haemorrhage (SAH) is described throughout the literature as a devastating neurological disorder associated with significant mortality and morbidity rates, arising not just from the haemorrhage itself, but also as a result of the catastrophic multisystem sequelae that can accompany the condition. Rupture of an intracranial aneurysm accounts for up to 85% of instances of SAH, occurring in approximately 6–7 per 100,000 in most populations and costing an estimated £510 million annually in the United Kingdom alone (Rivero-Arias et al, 2010). Treatment of Aneurysmal Subarachnoid Haemorrhage (aSAH) includes prevention of re-bleeding, evacuation of space occupying haematomas, management of hydrocephalus and prevention of secondary cerebral insult. Headache has been highlighted as the predominant, most characteristic and often the only symptom of aSAH, its severity having a variety of physiological and psychological effects on the patient. This paper summarises the findings of a literature review conducted as part of a research study to examine existing practices in the assessment and management of headache in patients with aSAH in an Irish Neurosciences Centre. The review demonstrates that despite a wealth of published literature on the diagnosis and management of aSAH, evaluation and management of its main symptom, headache, remains suboptimal and under-researched. The lack of available literature demonstrates that such enquiry is both timely and necessary
5,11-Dimethyldibenzo[b,f][1,5]diazocine-6,12(5H,11H)-dione
In the molecule of the title compound, C16H14N2O2, an N,N′-dimethyldianthranilide, the two methyl groups are disordered over two positions; site occupation factors were kept fixed as 0.75:0.25 and 0.65:0.35. The dihedral angle between the two benzene rings is 75.57 (3)°
Highly Active Mg(II) and Zn(II) complexes for the ring opening polymerisation of lactide
A range of simple ethylenediamine based Zn(II) and Mg(II) complexes have been prepared and their structures determined via NMR spectroscopy and X-ray crystallography. Preparation of these complexes was also demonstrated to be scalable, with 25 g of Zn(1)2 being readily produced. These complexes were trialed for the ring opening polymerisation (ROP) of lactide under industrial relevant conditions. Their reactivity has been related to their structure in solution. Incredibly high activity is achieved in the majority of cases including low catalytic loading and high temperatures, at industrially relevant conditions (180 °C 10,000:1:100 [LA]:[Zn]:[BnOH]), with high conversion achieved within 10 minutes and TOFs in excess of 100,000 hr-1 achieved. The performance of these initiators for polymer production is supported by GPC, DSC and IR spectroscopy which all highlight the excellent control achieved
Recommended from our members
QAA Subject Benchmark Statement - Land, Construction, Real Estate and Surveying
This document is a Subject Benchmark Statement for Land, Construction, Real Estate and
Surveying that defines what can be expected of graduates in the subjects, in terms of what
they might know, do and understand at the end of their studies
Economic Evaluation of CPD Activities for Healthcare Professionals: A Scoping Review
CONTEXT: Continuing Professional Development (CPD) activities for healthcare professionals are central to the optimization of patient safety and person-centred care. Although there is some evidence on the economics of healthcare professionals training, very little is known about the costs and benefits of CPD. METHODS: This study aimed to review the research evidence on economic evaluations of CPD activities for healthcare professionals. CINAHL, MEDLINE/PubMed, Scopus, Econlit, and Web of Science databases were used to identify articles published between 2010 and 2021. RESULTS: Of the 6791 titles identified, 119 articles met the inclusion criteria and were included in this scoping review. The majority of articles were partial economic evaluations of CPD programmes (n = 70), half were from the USA. Studies that included multiple professions were most prevalent (n = 54), followed by nurses (n = 34) and doctors (n = 23). Patient outcomes were the most commonly reported outcome (n = 51), followed by change in clinical practice (n = 38), and healthcare professionals’ knowledge gain (n = 19). CONCLUSIONS: There is an urgent call for more evidence regarding the economic evaluations of CPD. This is particularly important in view of the rising costs of healthcare globally. The majority of studies included in this review did not provide detailed information on the evaluations and many focused exclusively on the cost of CPD activities rather than outcomes
- …