Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 137
Filtrar
1.
J Gambl Stud ; 39(4): 1927-1958, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37294395

RESUMEN

Problem gambling not only impacts gamblers but also protrudes onto several affected others who experience adverse impacts, including financial, health, relationships, and psychological problems. The aims of this systematic review were twofold; to identify the psychosocial interventions to minimise the harm caused to affected others of problem gambling and to assess their efficacy. This study was conducted as outlined in the research protocol PROSPERO (CRD42021239138). Database searches were conducted in CENTRAL, MEDLINE, Social Science Database, CINHAL Complete, Academic Search Ultimate and PsycINFO. Randomised controlled trials of psychosocial interventions that aimed to minimise the harm caused to affected others of problem gambling written in English were eligible for inclusion. Risk of bias for included studies was assessed using the Cochrane ROB 2.0 tool. The identified interventions focused on two approaches to supporting affected others: interventions involving both the problem gambler and affected others, and interventions involving affected others only. As the interventions and outcome measures used were sufficiently similar, a meta-analysis was conducted. The quantitative synthesis revealed that generally, treatment groups were unable to show greater benefits over control groups. The goal for future interventions aimed at affected others of problem gambling should focus primarily on the wellbeing of affected others. The standardisation of outcome measures and data collection time points for better comparison of future research is needed.


Asunto(s)
Juego de Azar , Humanos , Juego de Azar/psicología , Intervención Psicosocial
2.
Opt Lett ; 48(9): 2222-2225, 2023 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-37126239

RESUMEN

Despite the gain in resolution brought by microsphere (MS)-assisted microscopy, it has always faced several limitations, such as a limited field of view, surface defects, low contrast, and lack of manipulability. This Letter presents a new type of MS created at the tip of an optical fiber, which we call a fiber microsphere (fMS). The fMS is made from a single-mode or coreless fiber, molten and stretched, ensuring high homogeneity and a sphere diameter smaller than the fiber itself. In addition, the connection between the fMS and the fiber makes scanning the sample a simple task, offering a solution to the difficulties of handling. The fabrication procedure of the fMS and the optical system used in the study are detailed. Our measurements show a clear superiority of the fMS over the soda-lime MS in resolving power and imaging performance.

3.
ACS Omega ; 8(12): 10643-10655, 2023 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-37008104

RESUMEN

Functional materials are challenging to characterize because of the presence of small structures and inhomogeneous materials. If interference microscopy was initially developed for use for the optical profilometry of homogeneous, static surfaces, it has since been considerably improved in its capacity to measure a greater variety of samples and parameters. This review presents our own contributions to extending the usefulness of interference microscopy. For example, 4D microscopy allows real-time topographic measurement of moving or changing surfaces. High-resolution tomography can be used to characterize transparent layers; local spectroscopy allows the measurement of local optical properties; and glass microspheres improve the lateral resolution of measurements. Environmental chambers have been particularly useful in three specific applications. The first one controls the pressure, temperature, and humidity for measuring the mechanical properties of ultrathin polymer films; the second controls automatically the deposition of microdroplets for measuring the drying properties of polymers; and the third one employs an immersion system for studying changes in colloidal layers immersed in water in the presence of pollutants. The results of each system and technique demonstrate that interference microscopy can be used for more fully characterizing the small structures and inhomogeneous materials typically found in functional materials.

4.
Drug Alcohol Depend ; 247: 109869, 2023 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-37086659

RESUMEN

BACKGROUND AND AIMS: Randomised controlled trials in Europe and Canada have shown that supervised heroin assisted treatment (HAT) is an effective treatment option for people with long-term heroin addictions for whom the standard opioid substitution treatments (OST) have not been effective. This review aims to evaluate the effectiveness of supervised HAT and analyse the significance of context and implementation in the design of successful HAT programmes. METHODS: PubMed, CENTRAL, Embase, and Web of Science were searched to identify randomised controlled trials (RCT) and systematic reviews evaluating supervised HAT compared to any other OST. Studies were eligible for inclusion if they were published in English, evaluated a supervised form of HAT, and included illegal drug use and/or health as a primary outcome measure. There were no restrictions on publication date. The following outcomes of the included studies were analysed using narrative synthesis and meta-analysis where possible: retention, street drug use, health, and social functioning. RESULTS: Nine randomised controlled trials spanning eight studies (n = 2331) and three systematic reviews met the inclusion criteria. Seven of the eight studies compared HAT to methadone maintenance treatment (MMT). One study compared HAT to injectable hydromorphone in a double-blind non-inferiority trial. Meta-analysis was performed on pooled results of retention across all included studies and found that HAT has a statistically significant effect on retention [Z = 7.65 (P > 0.0001)]. Five of the eight included studies found that supervised HAT reduces participants' use of illegal drugs more significantly than MMT. Evidence of improved health in participants receiving supervised HAT compared to other OSTs was inconsistent; positive effects were observed in three of the included studies (n = 1626). CONCLUSION: When compared to methadone maintenance treatment (MMT), heroin assisted treatment (HAT) more consistently retains people with heroin addictions in treatment and reduces their consumption of illicit drugs. TRIAL REGISTRATION: PROSPERO registration: CRD42022341306.


Asunto(s)
Dependencia de Heroína , Drogas Ilícitas , Humanos , Heroína/uso terapéutico , Dependencia de Heroína/tratamiento farmacológico , Tratamiento de Sustitución de Opiáceos/métodos , Resultado del Tratamiento , Metadona/uso terapéutico , Narcóticos/uso terapéutico , Ensayos Clínicos Controlados Aleatorios como Asunto
5.
Campbell Syst Rev ; 19(1): e1309, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36911865

RESUMEN

Background: Good communication is central to effective social work practice, helping to develop constructive working relationships and improve the outcomes of people in receipt of social work services. There is strong consensus that the teaching and learning of communication skills for social work students is an essential component of social work qualifying courses. However, the variation in communication skills training and its components is significant. There is a sizeable body of evidence relating to communication skills training therefore a review of the findings helps to clarify what we know about this important topic in social work education. We conducted this systematic review to determine whether communication skills training for social work students works and which types of communication skills training, if any, were more effective and lead to the most positive outcomes. Objectives: This systematic review aimed to critically evaluate all studies which have investigated the effectiveness of communication skills training programmes for social work students. The research question which the review posed is: 'What is the effectiveness of communication skills training for improving the communicative abilities of social work students?' It was intended that the review would provide a robust evaluation of communication skills training for social work students and help explain variations in practice to support educators and policy-makers to make evidence-based decisions in social work education, practice and policy. Search Methods: We conducted a search for published and unpublished studies using a comprehensive search strategy that included multiple electronic databases, research registers, grey literature sources, and reference lists of prior reviews and relevant studies. Selection Criteria: Study selection was based on the following characteristics: Participants were social work students on generic (as opposed to client specific) qualifying courses; Interventions included any form of communication skills training; eligible studies were required to have an appropriate comparator such as no intervention or an alternative intervention; and outcomes included changes in knowledge, attitudes, skills and behaviours. Study selection was not restricted by geography, language, publication date or publication type. Data Collection and Analysis: The search strategy was developed using the terms featuring in existing knowledge and practice reviews and in consultation with social work researchers, academics and the review advisory panel, to ensure that a broad range of terminology was included. One reviewer conducted the database searches, removing duplicates and irrelevant records, after which each record was screened by title and abstract by both reviewers to ensure robustness. Any studies deemed to be potentially eligible were retrieved in full text and screened by both reviewers. Main Results: Fifteen studies met the inclusion criteria. Overall, findings indicate that communication skills training including empathy can be learnt, and that the systematic training of social work students results in some identifiable improvements in their communication skills. However, the evidence is dated, methodological rigour is weak, risk of bias is moderate to high/serious or incomplete, and extreme heterogeneity exists between the primary studies and the interventions they evaluated. As a result, data from the included studies were incomplete, inconsistent, and lacked validity, limiting the findings of this review, whilst identifying that further research is required. Authors' Conclusions: This review aimed to examine effects of communication skills training on a range of outcomes in social work education. With the exception of skill acquisition, there was insufficient evidence available to offer firm conclusions on other outcomes. For social work educators, our understanding of how communication skills and empathy are taught and learnt remain limited, due to a lack of empirical research and comprehensive discussion. Despite the limitations and variations in educational culture, the findings are still useful, and suggest that communication skills training is likely to be beneficial. One important implication for practice appears to be that the teaching and learning of communication skills in social work education should provide opportunities for students to practice skills in a simulated (or real) environment. For researchers, it is clear that further rigorous research is required. This should include using validated research measures, using research designs which include appropriate counterfactuals, alongside more careful and consistent reporting. The development of the theoretical underpinnings of the interventions used for the teaching and learning of communication skills in social work education is another area that researchers should address.

6.
J Clin Epidemiol ; 156: 30-41, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36796736

RESUMEN

OBJECTIVES: Systematic reviews and meta-analyses are proliferating as they are an important building block to inform evidence-based guidelines and decision-making. Enforcement of best practice in clinical trials is firmly on the research agenda of good clinical practice, but there is less clarity as to how evidence syntheses that combine these studies can be influenced by bad practice. Our aim was to conduct a living systematic review of articles that highlight flaws in published systematic reviews to formally document and understand these problems. STUDY DESIGN AND SETTING: We conducted a comprehensive assessment of all literature examining problems, which relate to published systematic reviews. RESULTS: The first iteration of our living systematic review (https://systematicreviewlution.com/) has found 485 articles documenting 67 discrete problems relating to the conduct and reporting of systematic reviews which can potentially jeopardize their reliability or validity. CONCLUSION: Many hundreds of articles highlight that there are many flaws in the conduct, methods, and reporting of published systematic reviews, despite the existence and frequent application of guidelines. Considering the pivotal role that systematic reviews have in medical decision-making due to having apparently transparent, objective, and replicable processes, a failure to appreciate and regulate problems with these highly cited research designs is a threat to credible science.


Asunto(s)
Reproducibilidad de los Resultados , Humanos , Revisiones Sistemáticas como Asunto/métodos
7.
J Adolesc Health ; 70(2): 192-207, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34556422

RESUMEN

PURPOSE: Comprehensive school-based health services were reviewed as part of preparing World Health Organization guidelines. METHODS: Six databases were searched for controlled trials with schoolchildren aged 5-19 years, involving school-linked health services incorporating 4 of 7 health areas. RESULTS: Seventeen quasi-experimental studies conducted in high-income countries found school health services associated with reductions in suicide planning (male: 7.1% vs. 7.7%, p < .01), hospitalization (relative risks 3.403, 95% confidence interval [CI] 1.536 to 8.473, p < .05), emergency department visits (odds ratio .85, 95% CI .75 to .95, p = .006), school absence (odds ratio .78, 95% CI .69 to .87, p < .0001), carrying weapons (male: 16.1% vs. 25.1%, p < .01), fighting (male: 32.6% vs. 43.1%, p < .01), sexual activity (53.5% vs. 60.5%, p < .05), drinking alcohol (60.1% vs. 70.5%, p < .001), using drugs (28.0% vs. 38.3%, p < .001), and physical activity (female: 57.4% vs. 50.4%, p < .01). They can be cost-saving, were also associated with smoking and less contraceptive use, and had no effect on depression prevalence. Acceptability/satisfaction was good. The certainty of evidence was low to moderate. Heterogeneity was high for some outcomes. CONCLUSIONS: Results suggest moderate desirable and trivial undesirable effects of school health services in high-income countries. This article compiles evidence on effectiveness, cost-effectiveness, and acceptability into one review, enabling decision-makers to consider all essential factors.


Asunto(s)
Ejercicio Físico , Servicios de Salud Escolar , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Masculino , Instituciones Académicas , Conducta Sexual , Adulto Joven
8.
Artículo en Inglés | MEDLINE | ID: mdl-34574685

RESUMEN

Girls in low- and middle-income countries struggle to maintain good menstrual hygiene in part due to a lack of affordable sanitary products. The unaffordability of reliable sanitary products can lead to school absenteeism and is a barrier to education attainment and gender equality for girls in low-income contexts. Further, the lack of adequate disposal facilities can lead to social embarrassment and environmental pollution. Low-cost biodegradable absorbents (cotton terry cloth, linen, hemp cloth and bamboo wadding) were investigated in gelatine solution in terms of their absorption for use in menstrual hygiene. Bamboo wadding exhibits the highest absorption index (7.86), greater than cotton terry cloth (0.84), hemp cloth (1.4), linen (1.57) and a commercial sanitary pad (4.38). Though the absorption index of bamboo wadding is promising, especially in light of the vast availability of bamboo in tropical low- and middle-income countries, challenges lie in overcoming complex extraction processes from bamboo plants, which is discussed. This simple research of a physical material from a technical aspect, if further investigated with a social science and policy lens, could increase school attendance, improve the education levels attained by girls and be a key step towards gender equality in low- and middle-income countries.


Asunto(s)
Higiene , Cambio Social , Adolescente , Países en Desarrollo , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , Menstruación
10.
Opt Lett ; 46(4): 809-812, 2021 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-33577520

RESUMEN

Fourier analysis of interferograms captured in white light interference microscopy is proposed for performing simultaneous local spectral and topographic measurements at high spatial resolution over a large field of view. The technique provides a wealth of key information on local sample properties. We describe the processing and calibration steps involved to produce reflectivity maps of spatially extended samples. This enables precise and fast identification between different materials at a local scale of 1 µm. We also show that the recovered spectral information can be further used for improving topography measurements, particularly in the case of samples combining dielectric and conducting materials in which the complex refractive index can result in nanometric height errors.

11.
Syst Rev ; 9(1): 199, 2020 08 27.
Artículo en Inglés | MEDLINE | ID: mdl-32854765

RESUMEN

BACKGROUND: Philanthropists, charity leaders and policy-makers have increasingly recognised that the process of giving resources needs to be grounded in evidence-sometimes referred to as 'evidence-based' or 'data-driven' philanthropy. Yet few philanthropists practise evidence-based philanthropy, and some contend that there is insufficient evidence on which to base their funding decisions. This review aims to identify factors that promote or limit the use of evidence by philanthropists and to rigorously evaluate all existing research on this issue. OBJECTIVES: To identify, synthesise, and evaluate appropriate and rigorous research, examining factors which act as barriers to or facilitators of the use of evidence by philanthropists. METHODS: This review was conducted according to Cochrane standards and reported following PRISMA guidelines. The review protocol was pre-registered ( dx.doi.org/10.17504/protocols.io.wbsfane ). We searched 10 interdisciplinary databases using a highly sensitive search strategy, developed in consultation with an information scientist. We also contacted experts and searched a range of websites. Studies were included if they comprised primary research into or systematic reviews of the barriers to and facilitators of the use of evidence by philanthropists or funders when determining which charities (including health charities or programmes) to fund. All studies were appraised for quality, and the results synthesised using thematic analysis. RESULTS: Of 686 studies identified through database and hand searching, nine met inclusion criteria. The thematic summary identified three main barriers to philanthropists or funders using evidence: (1) inadequate knowledge transfer and difficulties accessing evidence, (2) challenges in understanding the evidence and (3) insufficient resources. The three key factors that expedite the use of evidence are (1) improved knowledge transfer and more accessible/relevant high-quality information, (2) access to professional advisors and networks and (3) broadening the definition of what counts as credible evidence along with standardisation of reporting. CONCLUSIONS: The authors of this review found several compelling arguments for promoting the use of evidence by philanthropists to inform their philanthropy. If evidence-based philanthropy is to flourish, then they recommed the following actions: Firstly, philanthropy should be underpinned by a commitment to 'do no harm'. Secondly, the definition of evidence should be expanded and funding decisions based upon consideration of 'all available evidence'. Finally, there should be more investment in synthesizing evidence and in the infrastructure for knowledge transfer.


Asunto(s)
Organizaciones de Beneficencia , Administración Financiera , Atención a la Salud , Humanos
12.
Biomed Opt Express ; 11(3): 1231-1243, 2020 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-32206405

RESUMEN

When detected early, colorectal cancer can be treated with minimally invasive flexible endoscopy. However, since only specialized experts can delineate margins and perform endoscopic resections of lesions, patients still often undergo colon resections. To better assist in the performance of surgical tasks, a robotized flexible interventional endoscope was previously developed, having two additional side channels for surgical instrument. We propose to enhance the imaging capabilities of this device by combining it with optical coherence tomography (OCT). For this purpose, we have developed a new steerable OCT instrument with an outer diameter of 3.5 mm. The steerable instrument is terminated with a 2 cm long transparent sheath to allow three-dimensional OCT imaging using a side-focusing optical probe with two external scanning actuators. The instrument is connected to an OCT imaging system built around the OCT Axsun engine, with a 1310 nm center wavelength swept source laser and 100 kHz A-line rate. Once inserted in one of the side channels of the robotized endoscope, bending, rotation and translation of the steerable OCT instrument can be controlled by a physician using a joystick. Ex vivo and in vivo tests show that the novel, steerable and teleoperated OCT device enhances dexterity, allowing for inspection of the surgical field without the need for changing the position of the main endoscope.

14.
J Psychopharmacol ; 34(1): 148-152, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31342840

RESUMEN

Based on the emerging interest in the effects of gut microbiota on cognition, this proof-of-concept study assessed how children aged 7 to 9 with low reading scores responded to the ingestion of a 3-month prebiotic supplement versus a placebo. As a secondary aim, the effects of the prebiotic on cognition, sleep, behaviour, mood, anxiety, and cortisol were assessed. In this sample, the prebiotic did not affect any of the outcome measures.


Asunto(s)
Cognición , Prebióticos/administración & dosificación , Lectura , Afecto/efectos de los fármacos , Ansiedad/prevención & control , Conducta/efectos de los fármacos , Niño , Femenino , Humanos , Hidrocortisona/metabolismo , Masculino , Saliva/metabolismo , Sueño/efectos de los fármacos
15.
Ultramicroscopy ; 208: 112859, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31683081

RESUMEN

Characterizing very small particles, from a few dozen micrometers to the nanometric scale, is a very challenging application in a wide range of domains. In this work, we demonstrate, through the recovery of silica and polystyrene bead properties (i.e. their size and refractive index) that Coherence Scanning Interferometry (CSI), in addition of being contactless, non-destructive, label-free and very well spatially resolved, is a very interesting and promising tool for such complex characterization. The CSI system is used as an imaging Fourier transform spectrometer meaning that the characterizations are achieved by analyzing the interference signal in the spectral domain. Some simulations of the proposed technique are presented and show that the accuracy of such characterization, in particular the measurement of the refractive index, are closely related to the signal to noise ratio. This observation is thereafter confirmed by the experimental results of beads buried within the depth of a transparent sample. Finally, the method is theoretically tested in the case of a scattering medium in which the quality of the signal is highly degraded. In this context, a geometrical approach enabling the simulation of an interference signal from a scattering layer is first proposed and then validated by means of comparison with experimental data.

16.
Oncotarget ; 10(21): 2068-2085, 2019 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-31007849

RESUMEN

Chronic inflammation has been recognized as a risk factor for the development and maintenance of malignant disease. Cytokines such as interleukin-6 (IL-6), oncostatin M (OSM), and interleukin-1 beta (IL-1ß) promote the development of both acute and chronic inflammation while promoting in vitro metrics of breast cancer metastasis. However, anti-IL-6 and anti-IL-1ß therapeutics have not yielded significant results against solid tumors in clinical trials. Here we show that these three cytokines are interrelated in expression. Using the Curtis TCGA™ dataset, we have determined that there is a correlation between expression levels of OSM, IL-6, and IL-1ß and reduced breast cancer patient survival (r = 0.6, p = 2.2 x 10-23). Importantly, we confirm that OSM induces at least a 4-fold increase in IL-6 production from estrogen receptor-negative (ER-) breast cancer cells in a manner that is dependent on STAT3 signaling. Furthermore, OSM induces STAT3 phosphorylation and IL-1ß promotes p65 phosphorylation to synergistically induce IL-6 secretion in ER- MDA-MB-231 and to a lesser extent in ER+ MCF7 human breast cancer cells. Induction may be reduced in the ER+ MCF7 cells due to a previously known suppressive interaction between ER and STAT3. Interestingly, we show in MCF7 cells that ER's interaction with STAT3 is reduced by 50% through both OSM and IL-1ß treatment, suggesting a role for ER in mitigating STAT3-mediated inflammatory cascades. Here, we provide a rationale for a breast cancer treatment regime that simultaneously suppresses multiple targets, as these cytokines possess many overlapping functions that increase metastasis and worsen patient survival.

17.
Sci Rep ; 9(1): 4725, 2019 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-30886200

RESUMEN

Microsphere-assisted microscopy currently benefits from a considerable interest in the microscope-research community. Indeed, this new imaging technique enables the lateral resolution of optical microscopes to reach around λ/5 through a full-field and a far-field acquisition while being label-free. Despite the photonic jet clearly not being a relevant concept to justify the super-resolution phenomenon, we show here how it can be used to predict imaging formation and performance such as the image position and the microsphere magnification. This study allows a better understanding of the experimental measurements that have been observed over the last decade and that will be observed in coming years, through numerical simulations using different optical and geometrical parameters.

18.
BMJ Glob Health ; 4(Suppl 1): e000848, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30775013

RESUMEN

Public health interventions and health technologies are commonly described as 'complex', as they involve multiple interacting components and outcomes, and their effects are largely influenced by contextual interactions and system-level processes. Systematic reviewers and guideline developers evaluating the effects of these complex interventions and technologies report difficulties in using existing methods and frameworks, such as the Grading of Recommendations Assessment, Development and Evaluation (GRADE). As part of a special series of papers on implications of complexity in the WHO guideline development, this paper serves as a primer on how to consider sources of complexity when using the GRADE approach to rate certainty of evidence. Relevant sources of complexity in systematic reviews, health technology assessments and guidelines of public health are outlined and mapped onto the reported difficulties in rating the estimates of the effect of these interventions. Recommendations on how to address these difficulties are further outlined, and the need for an integrated use of GRADE from the beginning of the review or guideline development is emphasised. The content of this paper is informed by the existing GRADE guidance, an ongoing research project on considering sources of complexity when applying the GRADE approach to rate certainty of evidence in systematic reviews and the review authors' own experiences with using GRADE.

19.
BMJ Open ; 9(2): e022975, 2019 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-30772845

RESUMEN

OBJECTIVES: Social services are increasingly commissioned to third and for-profit sector providers, but little is known about whether and how these changes influence quality indicators. We assessed quality-related outcomes across for-profit, public and third sector organisations delivering social care services. DESIGN: A secondary analysis was conducted on publically available data collected by the independent regulator of social care organisations in Scotland. All outcomes are reported as predicted probabilities derived from multivariate logistic regression coefficients. Generalised ordered logit models are utilised for the quality domains and the risk assessment score and logistic regression for whether complaints or requirements were issued to organisations. SETTING: Organisations inspected by the Care Inspectorate in Scotland. POPULATION: 13 310 social care organisations (eg, nursing homes and day care organisations). PRIMARY OUTCOMES: The quality and risk domains collected by the Care Inspectorate and complaints and requirements issued to organisations within the last 3 years. RESULTS: Controlling for multiple factors, we find that public and third sector providers performed consistently and statistically significantly better than for-profit organisations on most outcomes. For example, for-profit services were the most likely to be rated as high and medium risk (6.9% and 13.2%, respectively), and the least likely to be classified as low risk (79.9%). Public providers had the highest probability of being categorised as low risk (91.1%), and the lowest probability of having their services classified as medium (6.9%) and high risk (2%), followed by third sector providers (86%, 8.5% and 4.5%, respectively). Public providers performed better than third sector providers in some outcomes, but differences were relatively low and inconsistent. CONCLUSION: Public and third sector providers were rated considerably higher than their for-profit counterparts on most observed outcomes. Regulators might use this information to consider how social care providers across sector are incentivised to manage their resources.


Asunto(s)
Servicio Social/normas , Regulación Gubernamental , Humanos , Sector Privado , Sector Público , Garantía de la Calidad de Atención de Salud , Calidad de la Atención de Salud , Escocia , Servicio Social/organización & administración
20.
J Microsc ; 274(1): 69-75, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30681150

RESUMEN

White-light microsphere-assisted microscopy is a full-field and label-free imaging promising technique making it possible to achieve a subdiffraction lateral resolution. However, performance of this technique depends not only on the geometrical parameters but also on the illumination conditions of the optical system. In the present work, experimental measurements and computer simulations have been performed in air in order to determine the influence of the two diaphragm apertures of the Köhler arrangement and the spectral width of the light source on both the depth-of-focus of the microsphere and the optimization of the imaging contrast. Furthermore, the super-resolution phenomenon is demonstrated and the cumulated optical aberrations are shown through the measurement of the optical transfer function for the different arrangements of the illumination part.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...