Characterization of powder injection molded components using X-ray CT

Journal ArticleA good understanding of the microstructure of powder injection molded (PIM) components during debinding and sintering is essential in designing and optimizing PIM processes and properties. So far we have been limited in our ability to "see" what is going on. Microstructural characterization has classically been carried out using two-dimensional (2-D) image analysis techniques. This paper introduces a new micro characterization technique using three-dimensional (3-D), X-ray computerized tomography (CT) to characterize PIM parts

The role of the school nurse in protecting children and young people from maltreatment: An integrative review of the literature

Objectives. This review aims to describe the role of the school nurse in protecting children and young people from maltreatment by examining the international literature. Child maltreatment is a prevalent issue in global society today and includes physical, emotional and sexual abuse, neglect and exploitation. School nurses are ideally placed to identify and work with children and young people who are at risk of maltreatment through their regular contact with the school community. Design. Integrative literature review incorporating thematic analysis. Data Sources. Electronic databases British Nursing Database, Cumulative Index of Nursing and Allied Health Literature, Medline, PsycInfo, Cochrane Library Database for Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL). Search Terms: Role, School Nurse, Child Maltreatment. Review Methods. Initial title and abstract review of 444 studies resulted in 78 studies for full text review. Additional search strategies identified one relevant study. Inclusion and exclusion criteria were employed as follows; (1) study published in the English language, (2) peer-reviewed, (3) primary research, (4) inclusion of school nurses (or equivalent role internationally) in the study sample, and (5) a focus on the role of school nurses in preventing child maltreatment. Studies were appraised using the Critical Appraisal Skills Programme tool for qualitative studies and the Strengthening the Reporting of Observational Studies in Epidemiology checklist for mixed-methods and quantitative studies. Findings from the studies were identified, summarised and organised into a summary table, before being analysed thematically. Results. 21 studies met inclusion and quality criteria and were included in the review. Key themes that emerged from the analysis were; supporting the child and family, detective work, working with other professionals, training and supervision, barriers to protecting children and young people from maltreatment and trust. Conclusion. International literature highlights the variety of activities that school nurses may undertake in daily practice to protect children and young people from maltreatment. Several challenges to this role are identified, including time management and building relationships with children and young people. Recommendations for practice and further research are made

Trade between Caribbean Community (CARICOM) and Central American Common Market (CACM) countries: the role to play for ports and shipping services

Includes bibliographyAbstract Trade between the Central American Common Market (CACM) and the Caribbean Community (CARICOM) is very low. Only 0.2% of the two groups' trade is between them. A possible explanation for this might be a supposed lack of adequate transport services. This report analyzes if there exists a potential to promote inter-subregional trade by improving transport services. It is found that in fact there does not exist a lack of direct services. 17% of services that call in one of the subregions also call in the other. In addition, due to the increase in transshipment services, almost all countries in the Wider Caribbean have different options to trade with each other. The main explanation of low trade levels is to be found in production patterns, history and language barriers. Transport services between the two groups are, however, more costly and far less frequent than those from and to North America. This difference should become less relevant as transshipment within the Caribbean Basin, in countries such as the Dominican Republic, Jamaica, and Panama gains market share vis-à-vis transshpment in Miami. Such changes, as well as improvements in port productivity and information dissemination about available transport options, as well as non-transport-related initiatives could potentially help to increase trade between CACM and CARICOM

Genomic islands: tools of bacterial horizontal gene transfer and evolution

Bacterial genomes evolve through mutations, rearrangements or horizontal gene transfer. Besides the core genes encoding essential metabolic functions, bacterial genomes also harbour a number of accessory genes acquired by horizontal gene transfer that might be beneficial under certain environmental conditions. The horizontal gene transfer contributes to the diversification and adaptation of microorganisms, thus having an impact on the genome plasticity. A significant part of the horizontal gene transfer is or has been facilitated by genomic islands (GEIs). GEIs are discrete DNA segments, some of which are mobile and others which are not, or are no longer mobile, which differ among closely related strains. A number of GEIs are capable of integration into the chromosome of the host, excision, and transfer to a new host by transformation, conjugation or transduction. GEIs play a crucial role in the evolution of a broad spectrum of bacteria as they are involved in the dissemination of variable genes, including antibiotic resistance and virulence genes leading to generation of hospital ‘superbugs', as well as catabolic genes leading to formation of new metabolic pathways. Depending on the composition of gene modules, the same type of GEIs can promote survival of pathogenic as well as environmental bacteri

On the Molecular and Submolecular Structure of the Semiquinone Cations of Alloxazines and Isoalloxazines as Revealed by Electron-Paramagnetic-Resonance Spectroscopy

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66144/1/j.1432-1033.1981.tb05295.x.pd

Cost utility analysis of intramedullary nailing and skeletal traction treatment for patients with femoral shaft fractures in Malawi

Background and purpose — In Malawi, both skeletal traction (ST) and intramedullary nailing (IMN) are used in the treatment of femoral shaft fractures, ST being the mainstay treatment. Previous studies have found that IMN has improved outcomes and is less expensive than ST. However, no cost-effectiveness analyses have yet compared IMN and ST in Malawi. We report the results of a cost-utility analysis (CUA) comparing treatment using either IMN or ST. Patients and methods — This was an economic evaluation study, where a CUA was done using a decision-tree model from the government healthcare payer and societal perspectives with an 1-year time horizon. We obtained EQ-5D-3L utility scores and probabilities from a prospective observational study assessing quality of life and function in 187 adult patients with femoral shaft fractures treated with either IMN or ST. The patients were followed up at 6 weeks, and 3, 6, and 12 months post-injury. Quality adjusted life years (QALYs) were calculated from utility scores using the area under the curve method. Direct treatment costs were obtained from a prospective micro costing study. Indirect costs included patient lost productivity, patient transportation, meals, and childcare costs associated with hospital stay and follow-up visits. Multiple sensitivity analyses assessed model uncertainty. Results — Total treatment costs were higher for ST ($1,349) compared with IMN ($1,122). QALYs were lower for ST than IMN, 0.71 (95% confidence interval [CI] 0.66–0.76) and 0.77 (CI 0.71–0.82) respectively. Based on lower cost and higher utility, IMN was the dominant strategy. IMN remained dominant in 94% of simulations. IMN would be less cost-effective than ST at a total procedure cost exceeding $880 from the payer’s perspective, or$1,035 from the societal perspective. Interpretation — IMN was cost saving and more effective than ST in the treatment of adult femoral shaft fractures in Malawi, and may be an efficient use of limited healthcare resources.publishedVersio

Genomic islands: tools of bacterial horizontal gene transfer and evolution

Bacterial genomes evolve through mutations, rearrangements or horizontal gene transfer. Besides the core genes encoding essential metabolic functions, bacterial genomes also harbour a number of accessory genes acquired by horizontal gene transfer that might be beneficial under certain environmental conditions. The horizontal gene transfer contributes to the diversification and adaptation of microorganisms, thus having an impact on the genome plasticity. A significant part of the horizontal gene transfer is or has been facilitated by genomic islands (GEIs). GEIs are discrete DNA segments, some of which are mobile and others which are not, or are no longer mobile, which differ among closely related strains. A number of GEIs are capable of integration into the chromosome of the host, excision, and transfer to a new host by transformation, conjugation or transduction. GEIs play a crucial role in the evolution of a broad spectrum of bacteria as they are involved in the dissemination of variable genes, including antibiotic resistance and virulence genes leading to generation of hospital ‘superbugs’, as well as catabolic genes leading to formation of new metabolic pathways. Depending on the composition of gene modules, the same type of GEIs can promote survival of pathogenic as well as environmental bacteria

Gentamicin compared with ceftriaxone for the treatment of gonorrhoea (G-ToG): a randomised non-inferiority trial

© 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license. Background: Gonorrhoea is a common sexually transmitted infection for which ceftriaxone is the current first-line treatment, but antimicrobial resistance is emerging. The objective of this study was to assess the effectiveness of gentamicin as an alternative to ceftriaxone (both combined with azithromycin) for treatment of gonorrhoea. Methods: G-ToG was a multicentre, parallel-group, pragmatic, randomised, non-inferiority trial comparing treatment with gentamicin to treatment with ceftriaxone for patients with gonorrhoea. The patients, treating physician, and assessing physician were masked to treatment but the treating nurse was not. The trial took place at 14 sexual health clinics in England. Adults aged 16–70 years were eligible for participation if they had a diagnosis of uncomplicated genital, pharyngeal, or rectal gonorrhoea. Participants were randomly assigned to receive a single intramuscular dose of either gentamicin 240 mg (gentamicin group) or ceftriaxone 500 mg (ceftriaxone group). All participants also received a single 1 g dose of oral azithromycin. Randomisation (1:1) was stratified by clinic and performed using a secure web-based system. The primary outcome was clearance of Neisseria gonorrhoeae at all initially infected sites, defined as a negative nucleic acid amplification test 2 weeks post treatment. Primary outcome analyses included only participants who had follow-up data, irrespective of the baseline visit N gonorrhoeae test result. The margin used to establish non-inferiority was a lower confidence limit of 5% for the risk difference. This trial is registered with ISRCTN, number ISRCTN51783227. Findings: Of 1762 patients assessed, we enrolled 720 participants between Oct 7, 2014, and Nov 14, 2016, and randomly assigned 358 to gentamicin and 362 to ceftriaxone. Primary outcome data were available for 306 (85%) of 362 participants allocated to ceftriaxone and 292 (82%) of 358 participants allocated to gentamicin. At 2 weeks after treatment, infection had cleared for 299 (98%) of 306 participants in the ceftriaxone group compared with 267 (91%) of 292 participants in the gentamicin group (adjusted risk difference −6·4%, 95% CI −10·4% to −2·4%). Of the 328 participants who had a genital infection, 151 (98%) of 154 in the ceftriaxone group and 163 (94%) of 174 in the gentamicin group had clearance at follow-up (adjusted risk difference −4·4%, −8·7 to 0). For participants with a pharyngeal infection, a greater proportion receiving ceftriaxone had clearance at follow-up (108 [96%] in the ceftriaxone group compared with 82 [80%] in the gentamicin group; adjusted risk difference −15·3%, −24·0 to −6·5). Similarly, a greater proportion of participants with rectal infection in the ceftriaxone group had clearance (134 [98%] in the ceftriaxone group compared with 107 [90%] in the gentamicin group; adjusted risk difference −7·8%, −13·6 to −2·0). Thus, we did not find that a single dose of gentamicin 240 mg was non-inferior to a single dose of ceftriaxone 500 mg for the treatment of gonorrhoea, when both drugs were combined with a 1 g dose of oral azithromycin. The side-effect profiles were similar between groups, although severity of pain at the injection site was higher for gentamicin (mean visual analogue pain score 36 of 100 in the gentamicin group vs 21 of 100 in the ceftriaxone group). Interpretation: Gentamicin is not appropriate as first-line treatment for gonorrhoea but remains potentially useful for patients with isolated genital infection, or for patients who are allergic or intolerant to ceftriaxone, or harbour a ceftriaxone-resistant isolate. Further research is required to identify and test new alternatives to ceftriaxone for the treatment of gonorrhoea. Funding: UK National Institute for Health Research

Benefits and Harms of Conservative, Pharmacological, and Surgical Management Options for Women with Bladder Outlet Obstruction : A Systematic Review from the European Association of Urology Non-neurogenic Female LUTS Guidelines Panel

Peer reviewedPostprin

Unpacking the Partnership: Typology of Constitutional Courts’ Roles in Implementation of the European Court of Human Rights’ Case Law

Constitutional courts are regularly depicted as the European Court of Human Rights’ (ECtHR) partners which contribute significantly to domestic implementation of the ECtHR’s case law. This article acknowledges the constitutional courts’ importance in the implementation of ECHR rights, however, it argues that the domestic implementation environment is more complex and asks for a more nuanced approach to assessing the role of constitutional courts in implementing the ECtHR case law. The article offers a typology of constitutional courts’ roles in mechanisms of implementation of the ECtHR’s case law. The typology aims to provide a more nuanced picture of constitutional court’s roles as it takes into account their interactions with other domestic actors during different stages of implementation, and their different postures towards the ECtHR’s judgments. Informed by the typology, the article revisits the debate about the significance of constitutional courts in the ECHR system