Comprehensive Improvement of Various Features of Cu-Cd Ferrites (Cu0.5Cd0.5Fe2-xCexO4) by Cerium (Ce3+) Ion Substitution.

Cerium (Ce3+) substitution in Cu-Cd spinel nanoferrites with the compositional formula Cu0.5Cd0.5Fe2-xCexO4 (x = 0.0, 0.0125, 0.0250, 0.0375, 0.050) was performed by the hydrothermal route. The structural, morphological, optical, electrical, and dielectric properties of Ce-substituted Cu-Cd ferrites were explored. X-ray diffraction revealed the single-phase cubic structure of all nanoferrites. The average crystallite size (72.42-11.61 nm) and lattice constant (8.419-8.449 Å) were observed for the synthesized ferrites. The surface shapes of particles were determined by scanning electron microscopy. The substitution was also verified by Fourier transform infrared spectroscopy and ultraviolet-visible spectrophotometry. The semiconducting behavior of ferrites was determined from their electrical properties, such as direct current (DC) electrical resistivity. The Curie temperature was observed at 523 K temperature for all nanoferrites. The dielectric constant and dielectric loss significantly indicated the reducing behavior with an increase in the cerium concentration. The sample Cu0.5Cd0.5Fe1.975Ce0.025O4 resulted in the lowest optical bandgap energy, DC resistivity, and dielectric losses. The nature of the electrical resistivity and dielectric constants indicate that the designed materials are highly appropriate for the design of microwave gadgets.

Optimisation of the Flame Spheroidisation Process for the Rapid Manufacture of Fe3O4-Based Porous and Dense Microspheres.

The rapid, single-stage, flame-spheroidisation process, as applied to varying Fe3O4:CaCO3 powder combinations, provides for the rapid production of a mixture of dense and porous ferromagnetic microspheres with homogeneous composition, high levels of interconnected porosity and microsphere size control. This study describes the production of dense (35-80 µm) and highly porous (125-180 µm) Ca2Fe2O5 ferromagnetic microspheres. Correlated backscattered electron imaging and mineral liberation analysis investigations provide insight into the microsphere formation mechanisms, as a function of Fe3O4/porogen mass ratios and gas flow settings. Optimised conditions for the processing of highly homogeneous Ca2Fe2O5 porous and dense microspheres are identified. Induction heating studies of the materials produced delivered a controlled temperature increase to 43.7 °C, indicating that these flame-spheroidised Ca2Fe2O5 ferromagnetic microspheres could be highly promising candidates for magnetic induced hyperthermia and other biomedical applications.

Frailty score and outcomes of patients undergoing vascular surgery and amputation: A systematic review and meta-analysis.

Introduction: Frailty is associated with adverse postoperative health outcomes, including increased mortality, longer length of stay, higher rehospitalization, and other complications. There are many frailty assessment tools are to assess the level of frailty in vascular surgery patients. The aim of this study was to perform a systematic review and meta-analysis to assess the association between the frailty levels described by different frailty scores and adverse postoperative health outcomes among hospitalized vascular surgery patients and patients undergoing amputation. Methods: Studies utilizing frailty scores and similar frailty assessment tools to describe frailty and investigate the association between frailty and health outcomes were searched. The primary outcomes of this study were in-hospital mortality, postdischarge mortality, length of hospital stay, rehospitalization, and discharge location. Additional outcomes included postoperative myocardial infarction, postoperative renal failure, cerebrovascular accident and stroke, comorbidities, and estimated glomerular filtration rate (eGFR) levels. Joanna Briggs Institute (JBI) Critical Appraisal Tools were used for quality assessment. Results: In total, 24 studies with 1,886,611 participants were included in the final analysis. The overall results found that higher in-hospital mortality and postdischarge mortality were significantly associated with frailty. Frailty was also found to be significantly associated with a longer length of hospital stay, higher rehospitalization, and higher likelihood of non-home discharge. In addition, the results also showed that frailty was significantly associated with all kinds of comorbidities investigated, except chronic kidney disease. However, lower eGFR levels were significantly associated with frailty. Conclusion: Among patients who underwent all types of vascular surgery and those who underwent amputations, assessment of frailty was significantly associated with adverse postoperative outcomes and multiple comorbidities. Systematic review registration: https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=336374, identifier CRD42022336374.

Integrated Fabrication of Novel Inkjet-Printed Silver Nanoparticle Sensors on Carbon Fiber Reinforced Nylon Composites.

Inkjet-printing technology enables the contactless deposition of functional materials such as conductive inks on surfaces, hence reducing contamination and the risk of substrate damage. In printed electronics, inkjet technology offers the significant advantage of controlling the volume of material deposited, and therefore the fine-tuning of the printed geometry, which is crucial for the performance of the final printed electronics. Inkjet printing of functional inks can be used to produce sensors to detect failure of mechanical structures such as carbon fiber reinforced composite (CFRC) components, instead of using attached sensors, which are subject to delamination. Here, silver nanoparticle-based strain sensors were embedded directly in an insulated carbon-fiber laminate by using inkjet printing to achieve an optimized conductive and adhesive geometry, forming a piezoresistive strain sensor. Following the inkjet-printing optimization process, the sensor conductivity and adhesion performance were evaluated. Finally, the sensor was quantified by using a bending rig which applied a pre-determined strain, with the response indicating an accurate sensitivity as the resistance increased with an increased strain. The ability to embed the sensor directly on the CFRC prevents the use of interfacial adhesives which is the main source of failure due to delamination.

Evaluating the Implementation of a Multi-Component Intervention to Prevent Surgical Site Infection and Promote Evidence-Based Practice.

BACKGROUND: Published clinical practice guidelines on surgical site infection prevention are available; however, adherence to these guidelines remains suboptimal. AIMS: The aim of this study was to evaluate the effectiveness and perceived benefits of intervention and implementation strategies co-created by researchers and clinicians to prevent surgical site infections. METHODS: This mixed-method evaluation study involved an audit of nurses' wound care practices, followed by focus group and individual interviews to understand the perceived benefits of the intervention and implementation strategies. Descriptive statistical analyses were used to compare post-intervention audit data with baseline results. Deductive and inductive content analyses were undertaken on the qualitative data. RESULTS: The audit showed improvements in using aseptic technique and wound care documentation practices following intervention implementation. Nurses perceived the change champion as effective in role-modelling good practice. Education strategies including a poster and using a scenario-based quiz were viewed as easy to understand and helpful for nurses to apply aseptic technique in practice. The instructions and education conducted to improve documentation were considered important in the success of the Wound Care Template implementation. LINKING EVIDENCE TO ACTION: The integrated knowledge translation approach used in this study ensured the intervention and the implementation strategies employed were appropriate and meaningful for clinicians. Such strategies may be used in other intervention studies. The change champion played an important role in driving change and acted as a vital partner during the co-creation and the implementation processes. Ongoing education, audit and feedback became integrated in the ward nurses' routine practice, which has the potential to continuously improve and sustain evidence-based practice.

Design and Development of Magnetostrictive Actuators and Sensors for Structural Health Monitoring.

Carbon Fibre Reinforced Polymer composite (CFRP) is widely used in the aerospace industry, but is prone to delamination, which is a major causes of failure. Structural Health Monitoring (SHM) systems need to be developed to determine the damage occurring within it. Our motivation is to design cost-effective new sensors and a data acquisition system for magnetostrictive structural health monitoring of aerospace composites using a simple RLC circuit. The developed system is tested on magnetostrictive FeSiB and CoSiB actuator ribbons using a bending rig. Our results show detectable sensitivity of inductors as low as 0.6 µH for a bending rig radii between 600 to 300 mm (equivalent to 0.8 to 1.7 mStrain), which show a strain sensitivity resolution of 0.01 µStrain (surface area: ~36 mm2). This value is at the detectability limit of our fabricated system. The best resolution (1.86 µStrain) was obtained from a 70-turn copper (~64 µH) wire inductor (surface area: ~400 mm2) that was paired with a FeSiB actuator.

Preventing surgical site infections: Facilitators and barriers to nurses' adherence to clinical practice guidelines-A qualitative study.

AIMS: To identify the facilitators of and barriers to nurses' adherence to evidence-based wound care clinical practice guidelines (CPGs) in preventing surgical site infections (SSIs) in an Australian tertiary hospital. BACKGROUND: Current research suggests that up to 50% of nurses are unaware of the evidence-based recommendations to prevent SSIs and that adherence to evidence-based CPGs is suboptimal. However, little is known regarding the facilitators and barriers to adherence to evidence-based CPGs. DESIGN: A qualitative study incorporating ethnographic data collection techniques. METHODS: Data collection included semi-structured individual interviews and focus groups (N = 20), and examination of existing hospital policy and procedure documents. Thematic analysis using inductive and deductive approaches was conducted. This manuscript adheres to the COnsolidated criteria for REporting Qualitative research (COREQ) guidelines. FINDINGS: Data analysis revealed four themes: adhering to aseptic technique, knowledge and information seeking, documenting wound care and educating and involving patients in wound care. Facilitators and barriers within each theme were identified. Facilitators included participants' active information-seeking behaviour, a clear understanding of the importance of aseptic technique, and patient participation in wound care. Barriers included participants' knowledge and skills deficits regarding application of aseptic technique principles in practice, the availability of the hospital's wound care procedure document, suboptimal wound care documentation and the timing of patient education. CONCLUSIONS: There is a need to develop interventions to improve nurses' adherence to recommended CPGs including following aseptic technique principles, hand hygiene, documentation and patient education. Hospital procedure documents that outline wound care need to reflect current recommended CPGs. RELEVANCE TO CLINICAL PRACTICE: Adhering to evidence-based CPGs has been found to be effective in reducing and preventing SSIs. Our study provides an in-depth understanding of the barriers and facilitators to nurses' adherence to recommended CPGs. The findings may inform future practice improvements in wound care.

Operating department practitioners care of the patient with diabetes in the perioperative period.

Diabetes mellitus (DM) is a of group metabolic diseases which are defined by hyperglycaemia affecting multiple organs. The condition is found in people of all ages and ethnicities. Diabetes mellitus affects 180 million people worldwide and increasing numbers of patients are presenting with diabetic complications and the need for surgical intervention. This article describes the pathophysiology of DM and the management of the condition, particularly type I and type 2, in the perioperative phase of the surgical patient journey.

Reducing the risk of surgical site infection using a multidisciplinary approach: an integrative review.

PURPOSE: To identify and describe the strategies and processes used by multidisciplinary teams of health care professionals to reduce surgical site infections (SSIs). MATERIALS AND METHODS: An integrative review of the research literature was undertaken. Searches were conducted in April 2015. Following review of the included studies, data were abstracted using summary tables and the methodological quality of each study assessed using the Standards for Quality Improvement Reporting Excellence guidelines by two reviewers. Discrepancies were dealt with through consensus. Inductive content analysis was used to identify and describe the strategies/processes used by multidisciplinary health care teams to prevent SSI. RESULTS AND DISCUSSION: In total, 13 studies met the inclusion criteria. Of these, 12 studies used quantitative methods, while a single study used qualitative interviews. The majority of the studies were conducted in North America. All quantitative studies evaluated multifaceted quality-improvement interventions aimed at preventing SSI in patients undergoing surgery. Across the 13 studies reviewed, the following multidisciplinary team-based approaches were enacted: using a bundled approach, sharing responsibility, and, adhering to best practice. The majority of studies described team collaborations that were circumscribed by role. None of the reviewed studies used strategies that included the input of allied health professionals or patient participation in SSI prevention. CONCLUSION: Patient-centered interventions aimed at increasing patient participation in SSI prevention and evaluating the contributions of allied health professionals in team-based SSI prevention requires future research.

Health professionals' decision-making in wound management: a grounded theory.

AIM: To develop a conceptual understanding of the decision-making processes used by healthcare professionals in wound care practice. BACKGROUND: With the global move towards using an evidence-base in standardizing wound care practices and the need to reduce hospital wound care costs, it is important to understand health professionals' decision-making in this important yet under-researched area. DESIGN: A grounded theory approach was used to explore clinical decision-making of healthcare professionals in wound care practice. METHODS: Interviews were conducted with 20 multi-disciplinary participants from nursing, surgery, infection control and wound care who worked at a metropolitan hospital in Australia. Data were collected during 2012-2013. Constant comparative analysis underpinned by Strauss and Corbin's framework was used to identify clinical decision-making processes. FINDINGS: The core category was 'balancing practice-based knowledge with evidence-based knowledge'. Participants' clinical practice and actions embedded the following processes: 'utilizing the best available information', 'using a consistent approach in wound assessment' and 'using a multidisciplinary approach'. The substantive theory explains how practice and evidence knowledge was balanced and the variation in use of intuitive practice-based knowledge versus evidence-based knowledge. Participants considered patients' needs and preferences, costs, outcomes, technologies, others' expertise and established practices. Participants' decision-making tended to be more heavily weighted towards intuitive practice-based processes. CONCLUSION: These findings offer a better understanding of the processes used by health professionals' in their decision-making in wound care. Such an understanding may inform the development of evidence-based interventions that lead to better patient outcomes.

Postsurgery wound assessment and management practices: a chart audit.

AIMS AND OBJECTIVES: To examine wound assessment and management in patients following surgery and to compare these practices with current evidence-based guidelines for the prevention of surgical site infection across one healthcare services district in Queensland, Australia. BACKGROUND: Despite innovations in surgical techniques, technological advances and environmental improvements in the operating room, and the use of prophylactic antibiotics, surgical site infections remain a major source of morbidity and mortality in patients following surgery. DESIGN: A retrospective clinical chart audit METHODS: A random sample of 200 medical records of patients who had undergone surgery was undertaken over a two-year period (2010-2012). An audit tool was developed to collect the data on wound assessment and practice. The study was undertaken across one healthcare services district in Australia. RESULTS: Of the 200 records that were randomly identified, 152 (76%) met the inclusion criteria. The excluded records were either miscoded or did not involve a surgical incision. Of the 152 records included, 87 (57·2%) procedures were classified as 'clean' and 106 (69·7%) were elective. Wound assessments were fully documented in 63/152 (41·4%) of cases, and 59/152 (38·8%) charts had assessments documented on a change of patient condition. Of the 15/152 (9·9%) patients with charted postoperative wound complications, 4/15 (26·6%) developed clinical signs of wound infection, which were diagnosed on days 3 to 5. CONCLUSIONS: The timing, content and accuracy of wound assessment documentation are variable. Standardising documentation will increase consistency and clarity and contribute to multidisciplinary communication. RELEVANCE TO CLINICAL PRACTICE: These results suggest that postoperative wound care practices are not consistent with evidence-based guidelines. Consequently, it is important to involve clinicians in identifying possible challenges within the clinical environment that may curtail guideline use.

Belief bias and figural bias in syllogistic reasoning.

Belief bias is the tendency to be influenced by the believability of the conclusion when attempting to solve a syllogistic reasoning problem. Figural bias is the tendency to be influenced by the order in which the information is presented in the premises when attempting to solve a syllogistic reasoning problem. When studied simultaneously they enable an investigation of whether participants' reasoning on the syllogistic reasoning task is guided by the conclusion (backward reasoning) or the premises (forward reasoning). Experiments 1 and 2 found evidence of belief bias but not figural bias on the syllogistic evaluation task paradigm. Experiments 3 and 4 found evidence of figural bias but not belief bias on the syllogistic production task paradigm. The findings highlight that different task characteristics influence performance dependent upon the nature of task presentation. These findings are discussed in the context of current theories of belief bias in syllogistic reasoning.

Linguistic and location effects in compliance with pesticide warning labels for amateur and professional users.

Three studies explored amateur and professional users' compliance with pesticide warning labels. Professionals were classified as people working in a profession in which the use of pesticides is a necessary part of their job. Amateurs used pesticides only in their leisure time. The first study showed that the wording used affected perception of the appropriateness of hazard statements, one of the most effective variations being the use of the personal pronoun (statements beginning "You should..."). The location of warning information was also found to affect actual compliance: Compliance increased when warning information was presented in the directions for use section. A supplemental directive increased compliance only for professional users. In a final study, "best-case" and "worst-case" linguistic variations were combined with best-case and worst-case locations for safety information. Instruction statements using the personal pronoun and presented in the directions for use section resulted in the highest levels of compliance. The differences in compliance between amateur and professional users are interpreted within the framework of Rasmussen's (1986) distinction among skill-, rule-, and knowledge-based behavior. Actual or potential applications of this research include the design of warning labels and safety information.