430 research outputs found
We see what we are trained to see, or must we? Some personal lessons from a brush with kuru research
Review of the sensory and Physico-Chemical properties of red and white wheat: Which makes the best whole grain?
Establishing sensory and physico-chemical differences between products made from red and white wheat may guide the choice of wheat for use in whole grain and high fibre products. As sensory acceptance is key to consumption, this scoping review aimed to document sensory and physico-chemical research demonstrating quantitative differences in red and white wheat and the associated bran. The following databases were systematically searched following the PRISMA protocol: PubMed, Medline, Scopus, CINHAL and ScienceDirect (1990–2019). Of 16 studies, 13 were sensory studies with 529 participants (six of which included quantitative analysis) and three additional quantitative studies. Overall, 10 studies were in favour of white wheat (seven sensory studies, two focused on quantitative analysis and two with additional quantitative studies). Whole grain (wholemeal) bread, pita bread, crackers, noodles, tortillas, flour, intact grains and bran were examined. Aside from the seed coat colour, levels of bound versus free phenolic compounds and polyphenol oxidase activity appeared most responsible for the differences in red and white wheat. Ensuring the sample size for sensory studies are large enough to detect between-group preferences and linking to physico-chemical analysis are recommended. Attention to blinding techniques in sensory testing and use of food products realistically and consistently prepared with commercial potential are also suggested. This scoping review provides confidence in preference for white wheat for whole grain products, particularly for breads, tortillas and in the choice of white wheat for products suitable for the Asian market
Qualitative exploration of the experiences of community pharmacists delivering the Diabetes MedsCheck service
What is known and objective:The Diabetes MedsCheck (DMC) pharmacist service improves patient medication use and provides education on diabetes self-management. The original 2012 program evaluation identified barriers and facilitators in implementation. There are no recent studies exploring pharmacists' experiences with the DMC service. This pilot study may contribute to achieving an optimal diabetes management service in Australia. To explore the experiences of community pharmacists in providing the DMC service.Methods:A purposive sampling approach was used to recruit practising Australian community pharmacists from July to December 2019. Inclusion criteria included provision of DMC service for more than 1 year and having delivered the service within 3 months of recruitment. Semi-structured interviews elicited pharmacists' experience with the DMC service.Results and discussion:Twelve interviews of community pharmacist owners, managers and employees (including three who had additional medication review and diabetes qualifications), resulted in four primary themes: benefit of and need for training in diabetes management, challenges of service delivery and implementation, the challenge of patients' diabetes management and the positive effect of DMC on pharmacists' professional satisfaction from the positive impact on patient interactions and diabetes management. Pharmacists highlighted the need for continuous training on diabetes management and patient communication, and a dedicated time and space for service provision for optimal implementation and delivery of DMC. DMC helped to fulfil pharmacists' desires to provide health care. Pharmacists perceived through patient engagement and patient feedback that DMC benefits patient health care.What is new and conclusion:Positively, the implementation of the DMC service has promoted engagement with other health professionals while also contributing to pharmacists' professional satisfaction. Patient satisfaction and awareness of the health knowledge that pharmacists provide promotes pharmacist capabilities to the public. To ensure that accessible diabetes care in community pharmacy is optimized for greatest patient care, pharmacists delivering DMC should be supported by provision of contemporary diabetes management training and communication skills. Additional investment in community pharmacy operational set-up, such as dedicated pharmacist time, dedicated consulting space, upskilling of staff and investment in technology is also required to support optimal delivery of DMC
Dichotomous Hamiltonians with Unbounded Entries and Solutions of Riccati Equations
An operator Riccati equation from systems theory is considered in the case
that all entries of the associated Hamiltonian are unbounded. Using a certain
dichotomy property of the Hamiltonian and its symmetry with respect to two
different indefinite inner products, we prove the existence of nonnegative and
nonpositive solutions of the Riccati equation. Moreover, conditions for the
boundedness and uniqueness of these solutions are established.Comment: 31 pages, 3 figures; proof of uniqueness of solutions added; to
appear in Journal of Evolution Equation
Mitotic Defects Lead to Pervasive Aneuploidy and Accompany Loss of RB1 Activity in Mouse LmnaDhe Dermal Fibroblasts
Lamin A (LMNA) is a component of the nuclear lamina and is mutated in several human diseases, including Emery-Dreifuss muscular dystrophy (EDMD; OMIM ID# 181350) and the premature aging syndrome Hutchinson-Gilford progeria syndrome (HGPS; OMIM ID# 176670). Cells from progeria patients exhibit cell cycle defects in both interphase and mitosis. Mouse models with loss of LMNA function have reduced Retinoblastoma protein (RB1) activity, leading to aberrant cell cycle control in interphase, but how mitosis is affected by LMNA is not well understood.We examined the cell cycle and structural phenotypes of cells from mice with the Lmna allele, Disheveled hair and ears (Lmna(Dhe)). We found that dermal fibroblasts from heterozygous Lmna(Dhe) (Lmna(Dhe/+)) mice exhibit many phenotypes of human laminopathy cells. These include severe perturbations to the nuclear shape and lamina, increased DNA damage, and slow growth rates due to mitotic delay. Interestingly, Lmna(Dhe/+) fibroblasts also had reduced levels of hypophosphorylated RB1 and the non-SMC condensin II-subunit D3 (NCAP-D3), a mitosis specific centromere condensin subunit that depends on RB1 activity. Mitotic check point control by mitotic arrest deficient-like 1 (MAD2L1) also was perturbed in Lmna(Dhe/+) cells. Lmna(Dhe/+) fibroblasts were consistently aneuploid and had higher levels of micronuclei and anaphase bridges than normal fibroblasts, consistent with chromosome segregation defects.These data indicate that RB1 may be a key regulator of cellular phenotype in laminopathy-related cells, and suggest that the effects of LMNA on RB1 include both interphase and mitotic cell cycle control
When is the discretization of a spatially distributed system good enough for control?
Accepted versio
Reconstructing initial data using observers: error analysis of the semi-discrete and fully discrete approximations
A new iterative algorithm for solving initial data inverse problems from partial observations has been recently proposed in Ramdani et al. (Automatica 46(10), 1616-1625, 2010 ). Based on the concept of observers (also called Luenberger observers), this algorithm covers a large class of abstract evolution PDE's. In this paper, we are concerned with the convergence analysis of this algorithm. More precisely, we provide a complete numerical analysis for semi-discrete (in space) and fully discrete approximations derived using finite elements in space and an implicit Euler method in time. The analysis is carried out for abstract Schrödinger and wave conservative systems with bounded observation (locally distributed)
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Language support for immigrant children: a study of state schools in the UK and US
In recent decades, immigrants, refugees and asylum seekers have sought a new way of life in large numbers, often leaving their countries of origin behind in search of places that offer a better way of life. The purpose of this study was to investigate how elementary and middle school students in state schools in Reading, England (primarily speakers of Asian languages), and Richmond, Virginia (primarily speakers of Spanish), were supported academically, when most children’s first language was not English. The authors were interested in exploring whether or not there were cultural or structural differences in the way each country helped or hindered these students as they progressed through the school systems. Three UK schools in a district of approximately 100,000 and three US schools in a district of approximately 250,000 were the focus of this exploration from 2000 to 2003. Findings indicated that there were cultural and legislative differences and similarities. Teachers and administrators in both countries attempted to provide services with limited and sometimes diminishing resources. Community support varied based on resources, attitudes toward various ethnic groups, and the coping strategies adopted by these groups in their new environments. Marked differences appeared with regard to the manner in which assessments took place and how the results were made available to the public
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