109 research outputs found
Metal–organic framework growth at functional interfaces: thin films and composites for diverse applications
Porous metal–organic frameworks (MOFs) are highly ordered crystalline materials prepared by the self-assembly of metal ions with organic linkers to yield low density network structures of diverse topology. MOFs have attracted considerable attention over the last decade due to their facile preparation, tunable pore metrics and the ease of functionalisation of their internal surfaces, such that designer frameworks with exceptional properties for application in gas-storage, separation of small molecules, heterogeneous catalysis and drug delivery are becoming commonplace. For any material to find practical utility however, there is a need for processing and formulation into application-specific configurations. One way to do this is to prepare composite materials where the MOF is supported on a planar substrate or some other shaped body through interaction with functional groups at the support interface. This is a rapidly developing research area, and this review provides an overview of the diverse MOF composite materials prepared up to now, organised by interface type. The importance of the interface is explored within each section and while the overall emphasis is on applications of the composites, coatings and MOF-based devices, the most widely-used and successful synthetic strategies for composite formation are also presented
A Systematic Review of Research on Staff Training as an Intervention to Develop Communication in Children and Adults with Profound Intellectual and Multiple Disabilities
Introduction: This paper aims to identify to what extent staff training interventions are successful in enhancing the development of communication skills in people with profound intellectual and multiple disabilities. Methods: A systematic review was undertaken, conforming to PRISMA guidelines. English language, peer reviewed, empirical studies of staff training interventions to enhance the communication of people with profound intellectual and multiple disabilities were included. Databases Scopus, Web of Science, Proquest, Linguistics and Language Behaviour Abstracts (LLBA) and Medline were searched in July 2015 and updated in December 2022. Quality appraisal was conducted on 13 studies using Crowe's Critical Appraisal Tool (CCAT). Results: Few good quality evaluations of interventions were found. Challenges to research rigour included the diversity of people with profound intellectual and multiple disabilities, small sample sizes, intervention intensity and the management of fidelity. Conclusions: Manualised and bespoke interventions showed promise in improving staff communication and responsiveness.</p
Enhanced Thermoelectric Properties of a Semiconducting Two-Dimensional Metal–Organic Framework via Iodine Loading
We report the first result of a study in which molecular iodine has been incorporated via incipient wetness impregnation into the two-dimensional semiconducting metal–organic framework (MOF) Cu3(2,3,6,7,10,11-hexahydroxytriphenylene)2 Cu3(HHTP)2 to enhance its thermoelectric properties. A power factor of 0.757 μW m–1 K–2 for this MOF was obtained which demonstrates that this provides an effective route for the preparation of moderate-performance thermoelectric MOFs
Synthesis and applications of metal-organic framework–quantum dot (QD@MOF) composites
The combination of the high surface areas, microporosity and tuneable compositions of metal-organic frameworks (MOFs) with the desirable photo-physical behaviour of semiconductor nanoparticles or quantum dots (QDs), allows the preparation of composite materials with enhanced properties for applications in photocatalysis, energy, gas-storage and sensing. These QD@MOF composites are an emergent class of materials and in this review we discuss current strategies for their synthesis, consider the semiconductor behaviour of MOFs themselves and present the applications of the various materials reported this far grouped by the nature of the QD component
Communication with Children with Severe or Profound Intellectual Disabilities: A Guide for Parents
This guide has been developed to help family carers of children with severe to profound intellectual disabilities to understand more about communication challenges and to suggest helpful strategies to improve communication. This guide looks at communication within a partnership and considers the skills and challenges for both people within communication exchanges. Professionals working with families of children with severe to profound intellectual disabilities may also find this guide informative. As children with severe to profound intellectual disabilities often have additional complex conditions (often referred to as complex needs), autism, several genetic syndromes and sensory and physical impairment are also included.
Part one explains the general importance of communication, what types of communication difficulties are common in children with a severe to profound intellectual disability and the possible consequences of communication challenges. Part two describes ways in which more information about communication can be gained. Part three describes some ways in which communication can be supported. A glossary of key terms and list of useful resources are provided at the end of this guide
A systematic review of research on staff training as an intervention to develop communication in children and adults with profound intellectual and multiple disabilities
Introduction
This paper aims to identify to what extent staff training interventions are successful in enhancing the development of communication skills in people with profound intellectual and multiple disabilities.
Methods
A systematic review was undertaken, conforming to PRISMA guidelines. English language, peer reviewed, empirical studies of staff training interventions to enhance the communication of people with profound intellectual and multiple disabilities were included. Databases Scopus, Web of Science, Proquest, Linguistics and Language Behaviour Abstracts (LLBA) and Medline were searched in July 2015 and updated in December 2022. Quality appraisal was conducted on 13 studies using Crowe's Critical Appraisal Tool (CCAT).
Results
Few good quality evaluations of interventions were found. Challenges to research rigour included the diversity of people with profound intellectual and multiple disabilities, small sample sizes, intervention intensity and the management of fidelity.
Conclusions
Manualised and bespoke interventions showed promise in improving staff communication and responsiveness
Reply to "Inconsistencies in the specific nucleobase pairing motif prone to photodimerization in a MOF nanoreactor"
LSST: from Science Drivers to Reference Design and Anticipated Data Products
(Abridged) We describe here the most ambitious survey currently planned in
the optical, the Large Synoptic Survey Telescope (LSST). A vast array of
science will be enabled by a single wide-deep-fast sky survey, and LSST will
have unique survey capability in the faint time domain. The LSST design is
driven by four main science themes: probing dark energy and dark matter, taking
an inventory of the Solar System, exploring the transient optical sky, and
mapping the Milky Way. LSST will be a wide-field ground-based system sited at
Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m
effective) primary mirror, a 9.6 deg field of view, and a 3.2 Gigapixel
camera. The standard observing sequence will consist of pairs of 15-second
exposures in a given field, with two such visits in each pointing in a given
night. With these repeats, the LSST system is capable of imaging about 10,000
square degrees of sky in a single filter in three nights. The typical 5
point-source depth in a single visit in will be (AB). The
project is in the construction phase and will begin regular survey operations
by 2022. The survey area will be contained within 30,000 deg with
, and will be imaged multiple times in six bands, ,
covering the wavelength range 320--1050 nm. About 90\% of the observing time
will be devoted to a deep-wide-fast survey mode which will uniformly observe a
18,000 deg region about 800 times (summed over all six bands) during the
anticipated 10 years of operations, and yield a coadded map to . The
remaining 10\% of the observing time will be allocated to projects such as a
Very Deep and Fast time domain survey. The goal is to make LSST data products,
including a relational database of about 32 trillion observations of 40 billion
objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures
available from https://www.lsst.org/overvie
Shearwater Foraging in the Southern Ocean: The Roles of Prey Availability and Winds
Background Sooty (Puffinus griseus) and short-tailed (P. tenuirostris) shearwaters are abundant seabirds that range widely across global oceans. Understanding the foraging ecology of these species in the Southern Ocean is important for monitoring and ecosystem conservation and management. Methodology/Principal Findings Tracking data from sooty and short-tailed shearwaters from three regions of New Zealand and Australia were combined with at-sea observations of shearwaters in the Southern Ocean, physical oceanography, near-surface copepod distributions, pelagic trawl data, and synoptic near-surface winds. Shearwaters from all three regions foraged in the Polar Front zone, and showed particular overlap in the region around 140°E. Short-tailed shearwaters from South Australia also foraged in Antarctic waters south of the Polar Front. The spatial distribution of shearwater foraging effort in the Polar Front zone was matched by patterns in large-scale upwelling, primary production, and abundances of copepods and myctophid fish. Oceanic winds were found to be broad determinants of foraging distribution, and of the flight paths taken by the birds on long foraging trips to Antarctic waters. Conclusions/Significance The shearwaters displayed foraging site fidelity and overlap of foraging habitat between species and populations that may enhance their utility as indicators of Southern Ocean ecosystems. The results highlight the importance of upwellings due to interactions of the Antarctic Circumpolar Current with large-scale bottom topography, and the corresponding localised increases in the productivity of the Polar Front ecosystem
The Human Serum Metabolome
Continuing improvements in analytical technology along with an increased interest in performing comprehensive, quantitative metabolic profiling, is leading to increased interest pressures within the metabolomics community to develop centralized metabolite reference resources for certain clinically important biofluids, such as cerebrospinal fluid, urine and blood. As part of an ongoing effort to systematically characterize the human metabolome through the Human Metabolome Project, we have undertaken the task of characterizing the human serum metabolome. In doing so, we have combined targeted and non-targeted NMR, GC-MS and LC-MS methods with computer-aided literature mining to identify and quantify a comprehensive, if not absolutely complete, set of metabolites commonly detected and quantified (with today's technology) in the human serum metabolome. Our use of multiple metabolomics platforms and technologies allowed us to substantially enhance the level of metabolome coverage while critically assessing the relative strengths and weaknesses of these platforms or technologies. Tables containing the complete set of 4229 confirmed and highly probable human serum compounds, their concentrations, related literature references and links to their known disease associations are freely available at http://www.serummetabolome.ca
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