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1.
Phys Rev Lett ; 129(8): 080401, 2022 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-36053678

RESUMEN

The Majorana Demonstrator neutrinoless double-beta decay experiment comprises a 44 kg (30 kg enriched in ^{76}Ge) array of p-type, point-contact germanium detectors. With its unprecedented energy resolution and ultralow backgrounds, Majorana also searches for rare event signatures from beyond standard model physics in the low energy region below 100 keV. In this Letter, we test the continuous spontaneous localization (CSL) model, one of the mathematically well-motivated wave function collapse models aimed at solving the long-standing unresolved quantum mechanical measurement problem. While the CSL predicts the existence of a detectable radiation signature in the x-ray domain, we find no evidence of such radiation in the 19-100 keV range in a 37.5 kg-y enriched germanium exposure collected between December 31, 2015, and November 27, 2019, with the Demonstrator. We explored both the non-mass-proportional (n-m-p) and the mass-proportional (m-p) versions of the CSL with two different assumptions: that only the quasifree electrons can emit the x-ray radiation and that the nucleus can coherently emit an amplified radiation. In all cases, we set the most stringent upper limit to date for the white CSL model on the collapse rate, λ, providing a factor of 40-100 improvement in sensitivity over comparable searches. Our limit is the most stringent for large parts of the allowed parameter space. If the result is interpreted in terms of the Diòsi-Penrose gravitational wave function collapse model, the lower bound with a 95% confidence level is almost an order of magnitude improvement over the previous best limit.

2.
Phys Rev Lett ; 129(8): 081803, 2022 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-36053699

RESUMEN

Axions were originally proposed to explain the strong-CP problem in QCD. Through axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of ^{76}Ge-enriched high purity germanium detectors using a 33 kg-yr exposure collected between January, 2017 and November, 2019. A temporal-energy analysis gives a new limit on the axion-photon coupling as g_{aγ}<1.45×10^{-9} GeV^{-1} (95% confidence level) for axions with mass up to 100 eV/c^{2}. This improves laboratory-based limits between about 1 eV/c^{2} and 100 eV/c^{2}.

4.
Artículo en Inglés | MEDLINE | ID: mdl-35970256

RESUMEN

PRIMARY OBJECTIVE: Investigate the effects of land-based exercise-therapy on physical activity in people with knee osteoarthritis (KOA). DESIGN: Systematic review and meta-analysis of randomised or quasi-randomised trials investigating land-based exercise-therapy on physical activity, fitness, and general health in people with KOA. We updated a 2013 Cochrane review search on exercise-therapy for KOA in April 2021 and applied the Cochrane Risk-of-Bias Tool 1.0 to included articles. Standardised mean differences (SMDs) and 95% confidence intervals (CI) were calculated. GRADE was used to assess certainty of the evidence. RESULTS: Twenty-eight randomised controlled trials (2,789 participants) evaluating the effects of resistance-training (n = 10), walking (n = 6) and mixed-exercise programs (n = 7) were identified. Low to moderate certainty evidence indicated small increases in physical activity for exercise-therapy compared to non-exercise interventions in the short-term (SMD, 95% CI = 0.29, 0.09 to 0.50), but not the medium- (0.03, -0.11 to 0.18) or long-term (-0.06, -0.34 to 0.22). Low certainty evidence indicated large increases in physical activity for walking programs (0.53, 0.11 to 0.95) and mixed-exercise programs (0.67, 0.37 to 0.97) compared to non-exercise interventions in the short-term. Low certainty evidence indicated moderate and small increases in physical activity for resistance-training combined with education focused on pain coping skills and self-efficacy compared to education alone at medium-term follow-up (0.45, 0.19 to 0.71). CONCLUSION: Walking and mixed-exercise, but not resistance-training, may improve physical activity in people with KOA in the short-term. Combining resistance-training with education may increase physical activity in the medium-, but not the long-term, highlighting the potential importance of developing more effective longer-term interventions for people with KOA. Future studies evaluating land-based exercise-therapy are encouraged to include physical activity outcomes and longer-term follow-up to increase the certainty of evidence.

5.
Eur Phys J C Part Fields ; 82(3): 226, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35310515

RESUMEN

P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection capabilities. We have characterized a PPC detector's response to α particles incident on the sensitive passivated and p + surfaces, a previously poorly-understood source of background. The detector studied is identical to those in the Majorana Demonstrator experiment, a search for neutrinoless double-beta decay ( 0 ν ß ß ) in 76 Ge. α decays on most of the passivated surface exhibit significant energy loss due to charge trapping, with waveforms exhibiting a delayed charge recovery (DCR) signature caused by the slow collection of a fraction of the trapped charge. The DCR is found to be complementary to existing methods of α identification, reliably identifying α background events on the passivated surface of the detector. We demonstrate effective rejection of all surface α events (to within statistical uncertainty) with a loss of only 0.2% of bulk events by combining the DCR discriminator with previously-used methods. The DCR discriminator has been used to reduce the background rate in the 0 ν ß ß region of interest window by an order of magnitude in the Majorana Demonstrator  and will be used in the upcoming LEGEND-200 experiment.

6.
Musculoskelet Sci Pract ; 58: 102500, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35074694

RESUMEN

BACKGROUND: Musculoskeletal physiotherapy practice rapidly adopted telehealth during the COVID-19 pandemic, providing a unique opportunity to evaluate the experiences and attitudes of people who would not usually engage with these services. METHODS: A sequential mixed-methods study recruited people with musculoskeletal pain conditions accessing Australian private practice physiotherapist services. Part 1 involved an online survey of telehealth services accessed, treatments and resources provided, self-reported global change in condition, and attitudes toward telehealth. Part 2 involved semi-structured interviews with a subset of survey participants, exploring experiences and attitudes towards telehealth. Quantitative data was reported descriptively. Qualitative data was evaluated using inductive thematic analysis. RESULTS: 172 participants responded to the survey, and 19 were interviewed. 95% accessed video-based telehealth, and 85% reported condition improvement. 84% agreed it was an efficient use of their time, 75% agreed it was financially viable, and 73% agreed their condition was accurately diagnosed. 62% percent believed telehealth should be less expensive than in-person services. Qualitative analysis revealed four themes (17 subthemes), including (i) telehealth had value, but generally perceived as inferior to in-person care; (ii) challenges related to assessment, diagnosis, 'hands on' treatment, observation, communication, and technology; (iii) advantages to access safe, expert, and convenient care; and (iv) importance of supportive technology, including video and supplementary resources. CONCLUSION: Physiotherapist telehealth services provided to people with musculoskeletal pain during the pandemic was valued. However, telehealth was generally perceived as inferior to traditional in-person care, and may be best used as part of a hybrid model of care.


Asunto(s)
COVID-19 , Dolor Musculoesquelético , Fisioterapeutas , Telemedicina , Actitud , Australia , Humanos , Dolor Musculoesquelético/terapia , Pandemias , Telemedicina/métodos
7.
Sci Rep ; 11(1): 23626, 2021 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-34880294

RESUMEN

We show a method to control magnetic interfacial effects in multilayers with Dzyaloshinskii-Moriya interaction (DMI) using helium (He[Formula: see text]) ion irradiation. We report results from SQUID magnetometry, ferromagnetic resonance as well as Brillouin light scattering results on multilayers with DMI as a function of irradiation fluence to study the effect of irradiation on the magnetic properties of the multilayers. Our results show clear evidence of the He[Formula: see text] irradiation effects on the magnetic properties which is consistent with interface modification due to the effects of the He[Formula: see text] irradiation. This external degree of freedom offers promising perspectives to further improve the control of magnetic skyrmions in multilayers, that could push them towards integration in future technologies.

8.
Am J Perinatol ; 2021 Nov 16.
Artículo en Inglés | MEDLINE | ID: mdl-34784618

RESUMEN

OBJECTIVE: The aim of the study is to evaluate the prevalence and factors associated with opioid prescriptions to postpartum patients among TRICARE beneficiaries receiving care in the civilian health care system versus a military health care facility. STUDY DESIGN: We evaluated postpartum opioid prescriptions filled at discharge among patients insured by TRICARE Prime/Prime Plus using the Military Health System Data Repository between fiscal years 2010 to 2015. We included women aged 15 to 49 years old and excluded abortive pregnancy outcomes and incomplete datasets. The primary outcome investigated mode of delivery and demographics for those filling an opioid prescription. Secondary outcomes compared prevalence of filled opioid prescription at discharge for postpartum patients within civilian care and military care. RESULTS: Of a total of 508,258 postpartum beneficiaries, those in civilian health care were more likely to fill a discharge opioid prescription compared with those in military health care (OR 3.9, 95% CI 3.8-3.99). Cesarean deliveries occurred less frequently in military care (26%) compared with civilian care (30%), and forceps deliveries occurred more frequently in military care (1.38%) compared with civilian care (0.75%). Women identified as Asian race were least likely to fill an opioid prescription postpartum (OR 0.79, 95% CI 0.75-0.83). Women aged 15 to 19 years had a lower odds of filling an opioid prescription (OR 0.83, 95% CI 0.80-0.86). Women associated with a senior officer rank were less likely to fill an opioid prescription postpartum (OR 0.83, 95% CI 0.73-0.91), while those associated with warrant officer rank were more likely to fill an opioid prescription (OR 1.14, 95% CI 1.06-1.23). CONCLUSION: Our data indicates that women who received care in civilian facilities were more likely to fill an opioid prescription at discharge when compared with military facilities. Factors such as race and age were associated with opioid prescription at discharge. This study highlights areas for improvement for potential further studies. KEY POINTS: · Opioid prescription patterns for postpartum women may vary across the country.. · Our study indicates postpartum patients in civilian care are more likely to fill opioids postpartum.. · This study highlights a population which may have an improved opioid prescribing pattern..

9.
J Mech Behav Biomed Mater ; 124: 104867, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34601432

RESUMEN

This study introduces a novel technique to implement a locking hole system into AM patient-specific implants without the need of additional post-processing steps such as mechanical machining. This has the potential to decrease the time and cost of manufacturing these implants, providing surgeons with an additional option, that is better suited in cases where the underlying bone is already weakened or bone porosis is an inherent risk. A commercially available locking system was chosen and replicated using high-resolution X-ray CT. A biocompatible material, 316L stainless steel was used to print specimen on a L-PBF machine in different orientations. The specimen were heat treated to tune the mechanical properties to enable the locking system to work. The accuracy of the printed holes was confirmed using a nominal/actual comparison between the original and printed holes. The strength of the system was evaluated by measuring the force needed to push the screw out of the locking plate. The 316L stainless steel samples, when annealed to tailor hardness, performed similarly to the commercial system. This included different build orientations that suggest the locking system can be included in AM implants without the need for additional post-processing steps.


Asunto(s)
Placas Óseas , Tornillos Óseos , Fenómenos Biomecánicos , Fijación Interna de Fracturas , Humanos , Ensayo de Materiales , Acero Inoxidable
10.
Trials ; 22(1): 320, 2021 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-33941247

RESUMEN

Undertaking recruitment for research in schools is an effective way to recruit young people for research participation but it is not without its challenges. Gaining access and coordinating many levels of different organisations and stakeholders whose cooperation and approval are crucial all add time and sometimes logistical challenges for the research team. In addition, recruiting around sensitive research topics can elicit additional barriers to successful research. The research team aimed to conduct a pragmatic cluster randomised controlled trial involving schools in a local government region in Victoria, Australia, to assess the effect of a vaccination-based educational card game called "Vaxcards" on vaccine consent returns. Schools were contacted via phone and email to determine which staff member would best be a contact point for a face-to-face meeting to discuss the methods and purpose of the study. Email follow-ups were scheduled to follow up non-responsive schools and consent forms. The minimum required sample size was 13. Of 31 eligible schools, 13 were recruited. The research team encountered several unanticipated challenges before achieving the recruitment target. The most common reasons for non-participation were being too busy with other commitments, concerns regarding the topic of vaccination being too sensitive, and concerns that key stakeholders in the school would not approve of the research topic of vaccination. One school required a review by a private research ethics board that rejected the study. Significant hesitancy and misinformation about vaccine science was observed that affected engagement with a small number of schools. This paper highlights the challenges of recruiting schools in the context of public anxieties about vaccines and has several important learning lessons for successful recruitment about sensitive topics. This includes navigating approval processes for research in schools, the importance of local champions, dealing with misinformation and the importance of strong relationships and organisational trust. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry (ANZCTR) ACTRN12618001753246 . Prospectively registered on 25 October 2018 8:24:21 AM.


Asunto(s)
Manejo de Datos , Vacunas , Adolescente , Humanos , Instituciones Académicas , Vacunación , Victoria
11.
Phys Ther Sport ; 49: 98-105, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33662892

RESUMEN

OBJECTIVES: Determine physiotherapists' (i) awareness of physical activity, and exercise prescription guidelines; (ii) perceived role, knowledge, confidence, skills and training in prescribing and progressing aerobic exercise and resistance training to people with musculoskeletal pain; (iii) professional development preferences; and (iv) perceived influences of external factors on exercise prescription for people with musculoskeletal pain. DESIGN: Multi-national cross-sectional survey. METHODS: An open online survey was developed specifically for this study. RESULTS: 1,352 physiotherapists from 56 countries participated. The majority of respondents correctly stated physical activity guidelines for adults (60%) and children (53%), but only 37% correctly stated guidelines for older adults. Eleven percent and 16% could name an accepted guideline for aerobic exercise and resistance training, respectively. Most agreed their role included prescribing aerobic exercise (75%) and resistance training (89%). Fewer reported they had the confidence, training or skills to prescribe aerobic exercise (38-50%) and resistance training (49-70%). Workshops were the most preferred (44%) professional development option. Most respondents believed appointment scheduling and access to equipment and professional development (62-79%) affected their ability to prescribe effective exercise. CONCLUSION: Many physiotherapists lack knowledge and training to provide physical activity advice, and to prescribe aerobic exercise and resistance training to people with musculoskeletal pain.


Asunto(s)
Terapia por Ejercicio , Dolor Musculoesquelético/rehabilitación , Fisioterapeutas/educación , Competencia Profesional , Estudios Transversales , Humanos , Prescripciones , Encuestas y Cuestionarios
12.
Musculoskelet Sci Pract ; 52: 102340, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33571900

RESUMEN

BACKGROUND: Telehealth services have helped enable continuity of care during the coronavirus pandemic. We aimed to investigate use and views towards telehealth among allied health clinicians treating people with musculoskeletal conditions during the pandemic. METHODS: Cross-sectional international survey of allied health clinicians who used telehealth to manage musculoskeletal conditions during the coronavirus pandemic. Questions covered demographics, clinician-related factors (e.g. profession, clinical experience and setting), telehealth use (e.g. proportion of caseload, treatments used), attitudes towards telehealth (Likert scale), and perceived barriers and enablers (open questions). Data were presented descriptively, and an inductive thematic content analysis approach was used for qualitative data, based on the Capability-Opportunity-Motivation Behavioural Model. RESULTS: 827 clinicians participated, mostly physiotherapists (82%) working in Australia (70%). Most (71%, 587/827) reported reduced revenue (mean (SD) 62% (24.7%)) since the pandemic commenced. Median proportion of people seen via telehealth increased from 0% pre (IQR 0 to 1) to 60% during the pandemic (IQR 10 to 100). Most clinicians reported managing common musculoskeletal conditions via telehealth. Less than half (42%) of clinicians surveyed believed telehealth was as effective as face-to-face care. A quarter or less believed patients value telehealth to the same extent (25%), or that they have sufficient telehealth training (21%). Lack of physical contact when working through telehealth was perceived to hamper accurate and effective diagnosis and management. CONCLUSION: Although telehealth was adopted by allied health clinicians during the coronavirus pandemic, we identified barriers that may limit continued telehealth use among allied health clinicians beyond the current pandemic.


Asunto(s)
Técnicos Medios en Salud/estadística & datos numéricos , Actitud del Personal de Salud , COVID-19/rehabilitación , Enfermedades Musculoesqueléticas/rehabilitación , Telemedicina/estadística & datos numéricos , Adulto , Técnicos Medios en Salud/psicología , Australia , COVID-19/epidemiología , Estudios Transversales , Femenino , Accesibilidad a los Servicios de Salud/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Aceptación de la Atención de Salud/estadística & datos numéricos , Pautas de la Práctica en Medicina/estadística & datos numéricos
13.
Osteoarthritis Cartilage ; 29(4): 502-506, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33561542

RESUMEN

OBJECTIVE: To report outcomes across three countries for patients with symptomatic knee or hip OA attending the evidence-based education and exercise therapy program Good Life with osteoArthritis from Denmark (GLA:D®). DESIGN: GLA:D® is a structured treatment program including 2-3 patient education sessions and 12 supervised exercise sessions delivered over 8 weeks by certified health care practitioners. The program was introduced in Denmark in 2013, in Canada 2015 and in Australia 2016. Absolute mean change in pain intensity, number of chair stands in 30 s, 40 m walk test time and Knee injury and Osteoarthritis Outcome Score (KOOS)/Hip dysfunction and Osteoarthritis Outcome Score (HOOS) QOL subscale scores from baseline to immediately after treatment were reported as means and 95 % CIs and proportion of responders for each country. RESULTS: Patients from the three countries improved 26-33% in mean pain intensity, 8-12% in walking speed, 18-30% in chair stand ability and 12-26% in joint-related quality of life from baseline to immediately after treatment, with no clinically relevant differences between patients with hip and knee OA. These improvements correspond with moderate to large within-group effect sizes and 43-47 % of the patients experienced clinically relevant pain reductions. CONCLUSION: About half or more of patients across the three countries were categorized as responders for pain and objective function following the implementation of GLA:D®. These findings indicate positive patient outcomes associated with GLA:D® participation across varying health care systems from implementation of guideline-based patient education and exercise therapy for knee and hip OA.


Asunto(s)
Terapia por Ejercicio/métodos , Osteoartritis de la Cadera/rehabilitación , Osteoartritis de la Rodilla/rehabilitación , Educación del Paciente como Asunto/métodos , Anciano , Analgésicos no Narcóticos/uso terapéutico , Analgésicos Opioides/uso terapéutico , Antiinflamatorios no Esteroideos/uso terapéutico , Australia , Canadá , Dinamarca , Femenino , Humanos , Masculino , Persona de Mediana Edad , Osteoartritis de la Cadera/fisiopatología , Osteoartritis de la Rodilla/fisiopatología , Dimensión del Dolor , Rendimiento Físico Funcional
14.
J Matern Fetal Neonatal Med ; 34(2): 177-181, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30983438

RESUMEN

Objective: External cephalic version (ECV) is utilized in breech presenting singleton gestations but ECV of the noncephalic presenting twin has been considered technically unfeasible. We have successfully performed ECVs of the noncephalic presenting twin. Our objective is to describe our experience with this technique.Study design: This is a descriptive case series of our attempted ECVs in twin pregnancies and their outcomes.Results: Of 19 twin A ECV attempts, 10 cases were successful. The overall vaginal delivery rate was 42% (8/19 cases). There were no emergent cesarean deliveries required, and no neonatal injuries were observed.Conclusions: ECV can be achieved in pregnancies complicated by a noncephalic presenting twin. Further study is necessary to assess the safety and generalizability of our finding.


Asunto(s)
Presentación de Nalgas , Versión Fetal , Cesárea , Parto Obstétrico , Femenino , Humanos , Embarazo , Embarazo Gemelar
15.
Environ Model Softw ; 135: 104885, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-33041631

RESUMEN

System-of-systems approaches for integrated assessments have become prevalent in recent years. Such approaches integrate a variety of models from different disciplines and modeling paradigms to represent a socio-environmental (or social-ecological) system aiming to holistically inform policy and decision-making processes. Central to the system-of-systems approaches is the representation of systems in a multi-tier framework with nested scales. Current modeling paradigms, however, have disciplinary-specific lineage, leading to inconsistencies in the conceptualization and integration of socio-environmental systems. In this paper, a multidisciplinary team of researchers, from engineering, natural and social sciences, have come together to detail socio-technical practices and challenges that arise in the consideration of scale throughout the socio-environmental modeling process. We identify key paths forward, focused on explicit consideration of scale and uncertainty, strengthening interdisciplinary communication, and improvement of the documentation process. We call for a grand vision (and commensurate funding) for holistic system-of-systems research that engages researchers, stakeholders, and policy makers in a multi-tiered process for the co-creation of knowledge and solutions to major socio-environmental problems.

16.
Soc Sci Med ; 263: 113284, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32818851

RESUMEN

Compulsory co-payments limit access and may compromise quality in primary care. Patient Chosen Gap Payments (PCGPs) allow patients to specify a (voluntary) out-of-pocket contribution, creating an incentive for patient-centred care without the need for complex outcomes-based funding formulae. It is not yet known if widespread use of PCGP services is consistent with consumer preferences. We conducted a discrete choice experiment (DCE) in a sample of the adult Australian general population (n = 1457) during April 2019 to simulate patient choice between alternative primary care services and describe preferences for PCGP services. Participants also completed a supplementary valuation task in which participants reported their intended PCGP contribution for PCGP services. Finally, we conducted policy-simulations to predict market shares when PCGP clinics operate alongside the two existing models of primary care funding in Australia. Results suggest that patients prefer shorter wait time, longer consults, lower compulsory copayments, services with higher patient satisfaction ratings, choice of doctor and $0 suggested voluntary contribution for PCGP services. Policy-simulations suggest that high-quality PCGP services could obtain market share of up to 39% and voluntary contributions of up to $25.36 per service (95%CI: $10.24, $40.47), potentially adding $1.48 billion AUD in revenues and funding for primary care at no cost to government. Low-quality PCGP services are unlikely to capture significant market share and PCGP contributions were lowest for low-quality PCGP services ($12.12, 95%CI: $2.09, $26.34). Further field testing is recommended where (i) patients make consequential choices (e.g. real payments for simulated services), and (ii) dynamic effects on quality of care and utilisation can be observed; particularly in vulnerable populations. We conclude that PCGP services aligned with patient preferences could capture significant market share and substantially increase revenue to general practice.


Asunto(s)
Atención Dirigida al Paciente , Atención Primaria de Salud , Adulto , Australia , Humanos , Motivación , Prioridad del Paciente
17.
J Am Podiatr Med Assoc ; 110(2)2020 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-32556227

RESUMEN

Natural disasters, such as hurricanes and severe flooding, pose a threat of increased skin and soft-tissue infections, especially in the event of open fractures and wading through the waters. The purpose of this case study is to present a complex patient sustaining trauma resulting in an open bimalleolar fracture, multiple wounds, and exposure to a variety of water-borne pathogens during Hurricane Harvey in Houston, Texas, in 2017. He underwent multiple incision and drainage procedures, tissue cultures, and placement of antibiotic beads, with an application of external fixation to the left ankle. Several unique multidrug-resistant water-borne pathogens were identified, including Aeromonas hydrophila, Pseudomonas fluorescens/putida, and Serratia marcescens. Once the soft-tissue envelope was restored and infection cleared, a full-thickness rotational flap with tissue expansion was performed. Ultimate reconstruction was delayed several weeks and final left ankle open reduction and internal fixation was performed following antimicrobial treatment with split-thickness skin autograft and wound vacuum-assisted closure application. The patient was discharged after 28 days with no further complications. In instances such as these, all caretakers coming into contact with the patient should be aware of the potential risks of the possible infectious diseases and management to optimize the recovery following hydrologic disasters.


Asunto(s)
Fracturas de Tobillo/complicaciones , Infecciones Bacterianas/etiología , Tormentas Ciclónicas , Fracturas Abiertas/complicaciones , Microbiología del Agua , Adulto , Fracturas de Tobillo/diagnóstico por imagen , Fracturas de Tobillo/cirugía , Infecciones Bacterianas/tratamiento farmacológico , Farmacorresistencia Bacteriana Múltiple , Fracturas Abiertas/microbiología , Fracturas Abiertas/cirugía , Humanos , Masculino , Reducción Abierta , Radiografía , Huesos Tarsianos/diagnóstico por imagen , Texas , Contaminantes del Agua
19.
Sci Rep ; 10(1): 4030, 2020 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-32132584

RESUMEN

The equiatomic alloy FeRh is of great scientific and technological interest due its highly unusual first-order antiferromagnetic (AF) to ferromagnetic (FM) phase transition. Here we report an exploration of the interplay between topography and phase evolution with a comprehensive magnetic force microscopy study of nominal 50 nm thick FeRh thin films and subtractively patterned wires of width 0.2 µm-2 µm. In continuous films where the surface morphology had not been optimised for smoothness, the topographical variation was observed to dominate the distribution of the magnetic transition temperatures and dictates the nucleation and growth of the magnetic phases. This observation was repeated for patterned elements, where the effects of surface morphology were more significant than those of spatial confinement. These results have clear implications for future studies of low-dimensional FeRh films, as surface topography must be considered when analysing and comparing the transition behaviour of FeRh thin films.

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