1,002 research outputs found
The electrolytic refining of copper
Although copper can be separated from its solution by means of the electric current and the amount so separated varies directly as the current, there is a point in each and every solution where on account of the energy given off to the ions, the copper will be carried over in a more or less impure state, depending upon the strength of the current, the strength of the solution,whether it is saturated or only partly saturated, or whether normal basic or acid and also upon the amount of impurities in the solution. It is the purpose of this thesis (1) With a neutral solution of CuSOâ‚„, varying in strength from a one-fourth saturated to a saturated solution, to find the strength of current at which the oxide of copper will be deposited on the cathodes. (2) With solution of same strength but varying the amount of Hâ‚‚SOâ‚„ from 1 to 10 cc, to find the strength of current necessary to deposit copper oxide. (III) To find the effect of lead, arsenic, antimony, bismuth and tin on the deposited copper --Introduction, page 1
An Educational Resource for Young Adults with Disabilities, Their Caregivers, and Clinicians in the Driver Learning Environment
Driving and community mobility are essential occupations for growing independence and identity. Young adults who are transitioning into adulthood have a desire to engage in their community, and it is at this time that an interest in driving begins. Driving is a complex occupation that requires in-depth education and experience to safely participate in.
Learning to drive can be challenging, especially for a person with a disability. Young adults with disabilities confront several community concerns that limit their ability to participate in the meaningful activity of driving. Those with disabilities often rely on their support systems to help guide their decision-making and learning. Caregivers, specifically, play a significant role as a primary support system by preparing their young adults for this occupation. Unfortunately, there is an absence of educational resources on driver education that highlights the role of the caregiver. As a result, there is a lack of awareness on the caregiver’s role in driver education and a feeling of unpreparedness when creating a supportive learning environment for their young adult.
For this capstone project, an online advocacy and educational resource was developed for caregivers responsible for young adults with disabilities who are interested in learning the occupation of driving.https://soar.usa.edu/otdcapstonessummer2021/1005/thumbnail.jp
On the universal structure of human lexical semantics
How universal is human conceptual structure? The way concepts are organized
in the human brain may reflect distinct features of cultural, historical, and
environmental background in addition to properties universal to human
cognition. Semantics, or meaning expressed through language, provides direct
access to the underlying conceptual structure, but meaning is notoriously
difficult to measure, let alone parameterize. Here we provide an empirical
measure of semantic proximity between concepts using cross-linguistic
dictionaries. Across languages carefully selected from a phylogenetically and
geographically stratified sample of genera, translations of words reveal cases
where a particular language uses a single polysemous word to express concepts
represented by distinct words in another. We use the frequency of polysemies
linking two concepts as a measure of their semantic proximity, and represent
the pattern of such linkages by a weighted network. This network is highly
uneven and fragmented: certain concepts are far more prone to polysemy than
others, and there emerge naturally interpretable clusters loosely connected to
each other. Statistical analysis shows such structural properties are
consistent across different language groups, largely independent of geography,
environment, and literacy. It is therefore possible to conclude the conceptual
structure connecting basic vocabulary studied is primarily due to universal
features of human cognition and language use.Comment: Press embargo in place until publicatio
Impact of Electronic Alerts for Acute Kidney Injury on patient outcomes:interrupted time-series analysis of population cohort data
Assessing the accuracy of ICD-10 coding for measuring rates and mortality from Acute Kidney Injury and the impact of electronic alerts:An observational cohort study
Care bundles for Acute Kidney Injury:a balanced accounting of the impact of implementation in an Acute Medical Unit
Collective excitation spectrum of a disordered Hubbard model
We study the collective excitation spectrum of a d=3 site-disordered
Anderson-Hubbard model at half-filling, via a random-phase approximation (RPA)
about broken-symmetry, inhomogeneous unrestricted Hartree-Fock (UHF) ground
states. We focus in particular on the density and character of low-frequency
collective excitations in the transverse spin channel. In the absence of
disorder, these are found to be spin-wave-like for all but very weak
interaction strengths, extending down to zero frequency and separated from a
Stoner-like band, to which there is a gap. With disorder present, a prominent
spin-wave-like band is found to persist over a wide region of the
disorder-interaction phase plane in which the mean-field ground state is a
disordered antiferromagnet, despite the closure of the UHF single-particle gap.
Site resolution of the RPA excitations leads to a microscopic rationalization
of the evolution of the spectrum with disorder and interaction strength, and
enables the observed localization properties to be interpreted in terms of the
fraction of strong local moments and their site-differential distribution.Comment: 25 pages (revtex), 9 postscript figure
Delayed healthcare seeking and prolonged illness in healthcare workers during the COVID-19 pandemic: a single-centre observational study
Objectives: To describe a cohort of self-isolating healthcare workers (HCWs) with presumed COVID-19. /
Design: A cross-sectional, single-centre study. /
Setting: A large, teaching hospital based in Central London with tertiary infection services. /
Participants: 236 HCWs completed a survey distributed by internal staff email bulletin. 167 were women and 65 men. /
Measures: Information on symptomatology, exposures and health-seeking behaviour were collected from participants by self-report. /
Results: The 236 respondents reported illness compatible with COVID-19 and there was an increase in illness reporting during March 2020 Diagnostic swabs were not routinely performed. Cough (n=179, 75.8%), fever (n=138, 58.5%), breathlessness (n=84, 35.6%) were reported. Anosmia was reported in 42.2%. Fever generally settled within 1 week (n=110/138, 88%). Several respondents remained at home and did not seek formal medical attention despite reporting severe breathlessness and measuring hypoxia (n=5/9, 55.6%). 2 patients required hospital admission but recovered following oxygen therapy. 84 respondents (41.2%) required greater than the obligated 7 days off work and 9 required greater than 3 weeks off. /
Conclusion: There was a significant increase in staff reporting illness compatible with possible COVID-19 during March 2020. Subsequent serology studies at the same hospital study site have confirmed sero-positivity for COVID-19 up to 45% by the end of April 2020 in frontline HCWs. The study revealed a concerning lack of healthcare seeking in respondents with significant red flag symptoms (severe breathlessness, hypoxia). This study also highlighted anosmia as a key symptom of COVID-19 early in the pandemic, prior to this symptom being more widely recognised as a feature of COVID-19
Lets diversify by changing culture and challenging stereotypes: a case study from professional construction higher education programmes
The UK construction sector is not diverse and is reputed to be dangerous, dirty, physically demanding and non-professional. Young people often regard construction jobs as a last resort. Yet there is a growing skills shortage that needs to attract greater diversity of applicants. The aim of the BRIDGE (Building Routes Into Degrees with Greater Equality) project was to improve the number and diversity of entrants to professional construction higher education programmes. An in-depth assessment of the current situation informed a theory of change, and identified seven interrelated themes to tackle this. This case study is focused on the recruitment theme. Using action research, imagery/wording used in student recruitment was updated and staff undertook equality, diversity and inclusion training. The findings demonstrate the positive effective of these interventions. For example, on one target programme, the percentage of female students increased from 8% in 2016 to 23% in 2017
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