To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
The rocky shores of the north-east Atlantic have been long studied. Our focus is from Gibraltar to Norway plus the Azores and Iceland. Phylogeographic processes shape biogeographic patterns of biodiversity. Long-term and broadscale studies have shown the responses of biota to past climate fluctuations and more recent anthropogenic climate change. Inter- and intra-specific species interactions along sharp local environmental gradients shape distributions and community structure and hence ecosystem functioning. Shifts in domination by fucoids in shelter to barnacles/mussels in exposure are mediated by grazing by patellid limpets. Further south fucoids become increasingly rare, with species disappearing or restricted to estuarine refuges, caused by greater desiccation and grazing pressure. Mesoscale processes influence bottom-up nutrient forcing and larval supply, hence affecting species abundance and distribution, and can be proximate factors setting range edges (e.g., the English Channel, the Iberian Peninsula). Impacts of invasive non-native species are reviewed. Knowledge gaps such as the work on rockpools and host–parasite dynamics are also outlined.
Eating behaviours in childhood are considered as risk factors for eating disorder behaviours and diagnoses in adolescence. However, few longitudinal studies have examined this association.
We investigated associations between childhood eating behaviours during the first ten years of life and eating disorder behaviours (binge eating, purging, fasting and excessive exercise) and diagnoses (anorexia nervosa, binge eating disorder, purging disorder and bulimia nervosa) at 16 years.
Data on 4760 participants from the Avon Longitudinal Study of Parents and Children were included. Longitudinal trajectories of parent-rated childhood eating behaviours (8 time points, 1.3–9 years) were derived by latent class growth analyses. Eating disorder diagnoses were derived from self-reported, parent-reported and objectively measured anthropometric data at age 16 years. We estimated associations between childhood eating behaviours and eating disorder behaviours and diagnoses, using multivariable logistic regression models.
Childhood overeating was associated with increased risk of adolescent binge eating (risk difference, 7%; 95% CI 2 to 12) and binge eating disorder (risk difference, 1%; 95% CI 0.2 to 3). Persistent undereating was associated with higher anorexia nervosa risk in adolescent girls only (risk difference, 6%; 95% CI, 0 to 12). Persistent fussy eating was associated with greater anorexia nervosa risk (risk difference, 2%; 95% CI 0 to 4).
Our results suggest continuities of eating behaviours into eating disorders from early life to adolescence. It remains to be determined whether childhood eating behaviours are an early manifestation of a specific phenotype or whether the mechanisms underlying this continuity are more complex. Findings have the potential to inform preventative strategies for eating disorders.
To identify risk behaviour patterns for chronic non-communicable diseases (NCD) in the Brazilian population and to investigate associated socio-economic and demographic factors.
Factor analysis was used to identify patterns considering the following risk behaviours: consumption of soft drinks/artificial juice, sweet foods, red meat with apparent fat, chicken skin; inadequate consumption of fruits and vegetables; alcohol abuse; smoking; absence of physical activity during leisure time; and time spent watching television. The χ2 test was used to compare ratios. All analyses accounted for weighting factors and the study’s complex sampling design effect. The socio-economic and demographic variables evaluated were gender, age, schooling level and macro region of residence.
National Health Survey, a household survey with national representation, conducted in 2013 in Brazil.
Individuals (n 60202) aged 18 years or over.
Four risk behaviour patterns were identified: ‘Physical inactivity in leisure time and Inadequate consumption of fruits and vegetables’, ‘Saturated fat’, ‘Alcohol and Smoking’ and ‘Sedentary behaviour and Sugar’, explaining 52·01 % of the total variance. Overall, greater adherence to ‘Saturated fat’ and ‘Alcohol and Smoking’ patterns was observed among men and those with lower education level. The ‘Sedentary behaviour and Sugar’ and ‘Physical inactivity in leisure time and Inadequate consumption of fruits and vegetables’ patterns had greater adherence among younger individuals, and the first was associated with higher education whereas the second with less education among individuals residing in the North and Northeast regions.
Risk behaviour patterns for NCD were heterogeneous, reflecting the socio-economic and demographic differences in Brazil.
Direct polycondensation of L-lactic acid with a comonomer allows tailoring the properties of the product from the very first step. The viscous L-lactic acid co-oligomers with star-shaped architectures obtained were modified with three different acrylate monomers. Regardless the functionalization agent, UV curing was fast and all materials were cell compatible and promoted cell adhesion. The physical properties of the three star-shaped films exhibited a consistent trend as swelling capacity, hydrolytic instability, and gel content decreased simultaneously. A higher network density increased crosslinking degree and gel content among the films with an isocyanate group. The methacrylic end group functionalized material, lowest molecular weight, consistently exhibited the higher hydrolytic instability. Comparison of physical properties of these films with the corresponding linear materials reported previously confirmed the influence of precursor molecular architecture on the final material. The methodology developed herein is prone to scale-up and lead to the industrial production of new bioadhesives.
Anemia is a major problem, frequently resulting from iron deficiency (1). Guidelines recommend the administration of intravenous (IV) iron, leaving blood transfusions for critical patients due to the potential impact in length of stay (LOS) and mortality (2,3). We aimed to characterize IV iron sucrose utilization and health resource utilization in anemic patients.
This is a retrospective ongoing cohort study. Patient records from a general Portuguese Hospital with an administration of iron sucrose in 2014–2015 were reviewed. Adult anemic patients with at least one hemoglobin (Hb) evaluation before and after the administration of IV iron were included. Endpoints assessed were: Hb level (baseline, 4 and 8 weeks after), anemia correction rate at weeks 4 and 8, blood transfusions, length of stay (LOS), rate of readmissions (<30 days) and inpatient mortality. Statistical analysis included non-parametric and chi-square tests to assess differences between groups and a logistic regression model, using a 5 percent significance level.
Data was collected for 401 patients (63.1 percent female; mean age Standard Deviation, SD: 62.6 (21.7) years) and 431 IV iron sucrose administration episodes. Mean cumulative iron dose was 679.5 mg. Baseline Hb level was 84.5 g/l and increased to 94.3 g/l (week 4) and to 103.0 g/l (week 8). Blood transfusions were performed in 53.8 percent of the episodes. Overall 157 (36.4 percent) episodes had a >20 g/l increase in Hb level. Blood transfusions were associated with a higher proportion of Hb level increase >20 g/l (44.0 percent versus 27.9 percent, p<.001). The overall mean LOS was 15.3 days, although episodes with transfusions had a significantly longer duration (17.5 days versus 12.7 days; p<.001). Overall readmission rate was 25.8 percent, with a higher proportion in episodes with blood transfusions (29.3 percent versus 21.6 percent). A total of 36 patients (9.0 percent) died at the hospital before discharge. Transfusions performed during or after IV iron administration increased 3.1 times the risk of in-hospital death (95 percent Confidence Interval, CI: 1.3-7.0; p = .008), after adjusting for age and sex.
We observed a high rate of blood transfusions in this cohort treated with intravenous iron sucrose for anemia. Transfusions were associated with substantial burden of resource consumption and in-hospital mortality.
Patient Blood Management (PBM) describes a multidisciplinary approach that strives to optimize patients own blood and has been reported to reduce blood components utilization while achieving improved patient outcomes and reduced healthcare costs. The aim of this study was to evaluate the public health and economic impact related to the implementation of a nationwide PBM program in Portugal.
A decision-model comparing two scenarios (“current clinical practice” and “with PBM implementation”) was used to estimate the PBM impact including hospital-assisted patients from the following therapeutic areas: surgery (orthopaedic, cardiac and urologic), cardiology, oncology, gastrointestinal bleeding, abnormal uterine bleeding, hemodialysis, inflammatory bowel disease and pregnancy. Model inputs were obtained from Portuguese national health databases and literature review. The public health impact was measured in life years (LY) gained, disability-adjusted life years (DALY) reduction, hospital length of stay (LOS) and 30-day readmission rate reduction. The economic value was expressed in total and hospitalization costs savings.
A total of 384,704 patients were eligible for PBM strategies. We estimated that a one year nationwide PBM implementation could avoid 594 premature deaths, representing a gain of 1,481 LY and a reduction of 3,660 DALYs relative to the current paradigm. An 8.4 percent and 37.3 percent reduction in length of stay and 30-day readmission rate are expected, respectively. This corresponds to EUR70.4 million savings in hospitalization costs. Although PBM closer monitoring would imply additional physician visits and medicines use, leading to EUR24.1 million in additional expenditure, in this population the overall PBM implementation can generate net savings of more than EUR67.7 million per year (6.3 percent reduction of public expenditure).
The implementation of a nationwide PBM in Portugal may represent a great public health impact, especially in decreased mortality and disability, with substantial public expenditure reduction.
We demonstrate improved compatibility of poly(ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole transport layer with acid-sensitive materials by addition of a simple base, NaOH or NH4OH, to the aqueous suspension to increase pH. Addition of NaOH to the acidic PEDOT:PSS allowed the deposition of PEDOT:PSS on top of an inverted poly(3-hexylthiophene):ZnO nanoparticle blend hybrid photovoltaic device, and improved device performance due to preservation of the ZnO electron acceptor. To quantitatively investigate the impact of base addition to hole transport layer properties and device performance, we deposited PEDOT:PSS with different pH values on inverted poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester bulk heterojunction devices. We find that NaOH modification results in a substantial work function decrease and series resistance increase. In contrast, the volatile NH4OH leaves PEDOT:PSS with minimal changes in film properties and device performance.
Email your librarian or administrator to recommend adding this to your organisation's collection.