Five insights from the global burden of disease study 2019
- Authors: Abbafati, Christiana , Machado, Daiane , Cislaghi, Beniamino , Salman, Omar , Rahman, Muhammad Aziz
- Date: 2020
- Type: Text , Journal article , Review
- Relation: The Lancet Vol. 396, no. 10258 (2020), p. 1135-1159
- Full Text:
- Reviewed:
- Description: The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 provides a rules-based synthesis of the available evidence on levels and trends in health outcomes, a diverse set of risk factors, and health system responses. GBD 2019 covered 204 countries and territories, as well as first administrative level disaggregations for 22 countries, from 1990 to 2019. Because GBD is highly standardised and comprehensive, spanning both fatal and non-fatal outcomes, and uses a mutually exclusive and collectively exhaustive list of hierarchical disease and injury causes, the study provides a powerful basis for detailed and broad insights on global health trends and emerging challenges. GBD 2019 incorporates data from 281 586 sources and provides more than 3·5 billion estimates of health outcome and health system measures of interest for global, national, and subnational policy dialogue. All GBD estimates are publicly available and adhere to the Guidelines on Accurate and Transparent Health Estimate Reporting. From this vast amount of information, five key insights that are important for health, social, and economic development strategies have been distilled. These insights are subject to the many limitations outlined in each of the component GBD capstone papers. © 2020 Elsevier Ltd. **Please note that there are multiple authors for this article therefore only the name of the first 5 including Federation University Australia affiliate “Muhammad Aziz Rahman” is provided in this record**
Can optimum solar radiation exposure or supplemented vitamin D intake reduce the severity of COVID-19 symptoms?
- Authors: Abraham, Joji , Dowling, Kim , Florentine, Singarayer
- Date: 2021
- Type: Text , Journal article , Review
- Relation: International Journal of Environmental Research and Public Health Vol. 18, no. 2 (2021), p. 1-21
- Full Text:
- Reviewed:
- Description: The foremost mortality-causing symptom associated with COVID-19 is acute respiratory distress syndrome (ARDS). A significant correlation has been identified between the deficiency in vitamin D and the risk of developing ARDS. It has been suggested that if we can reduce or modify ARDS in COVID-19 patients, we may significantly reduce the severity of COVID-19 symptoms and associated mortality rates. The increased mortality of dark-skinned people, who have a reduced UV absorption capacity, may be consistent with diminished vitamin D status. The factors associated with COVID-19 mortality, such as old age, ethnicity, obesity, hypertension, cardiovascular diseases, and diabetes, are all found to be linked with vitamin D deficiency. Based on this review and as a precautionary measure, it is suggested that the adoption of appropriate and safe solar exposure and vitamin D enriched foods and supplements should be considered to reduce the possible severity of COVID-19 symptoms. Safe sun exposure is deemed beneficial globally, specifically in low and middle- income countries, as there is no cost involved. It is also noted that improved solar exposure and vitamin D levels can reduce the impact of other diseases as well, thus assisting in maintaining general human well-being. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Risk of post-fire metal mobilization into surface water resources : A review
- Authors: Abraham, Joji , Dowling, Kim , Florentine, Singarayer
- Date: 2017
- Type: Text , Journal article , Review
- Relation: Science of the Total Environment Vol. 599-600, no. (2017), p. 1740-1755
- Full Text: false
- Reviewed:
- Description: One of the significant economic benefits to communities around the world of having pristine forest catchments is the supply of substantial quantities of high quality potable water. This supports a saving of around US$ 4.1 trillion per year globally by limiting the cost of expensive drinking water treatments and provision of unnecessary infrastructure. Even low levels of contaminants specifically organics and metals in catchments when in a mobile state can reduce these economic benefits by seriously affecting the water quality. Contamination and contaminant mobility can occur through natural and anthropogenic activities including forest fires. Moderate to high intensity forest fires are able to alter soil properties and release sequestered metals from sediments, soil organic matter and fragments of vegetation. In addition, the increase in post-fire erosion rate by rainfall runoff and strong winds facilitates the rapid transport of these metals downslope and downstream. The subsequent metal deposition in distal soil and water bodies can influence surface water quality with potential impacts to the larger ecosystems inclusive of negative effects on humans. This is of substantial concern as 4 billion hectares of forest catchments provide high quality water to global communities. Redressing this problem requires quantification of the potential effects on water resources and instituting rigorous fire and environmental management plans to mitigate deleterious effects on catchment areas. This paper is a review of the current state of the art literature dealing with the risk of post-fire mobilization of the metals into surface water resources. It is intended to inform discussion on the preparation of suitable management plans and policies during and after fire events in order to maintain potable water quality in a cost-effective manner. In these times of climate fluctuation and increased incidence of fires, the need for development of new policies and management frameworks are of heighted significance. © 2017 Elsevier B.V.
Licorice (glycyrrhiza glabra) extracts-suitable pharmacological interventions for covid-19? a review
- Authors: Abraham, Joji , Florentine, Singarayer
- Date: 2021
- Type: Text , Journal article , Review
- Relation: Plants Vol. 10, no. 12 (2021), p.
- Full Text:
- Reviewed:
- Description: Even though vaccination has started against COVID-19, people should continue maintaining personal and social caution as it takes months or years to get everyone vaccinated, and we are not sure how long the vaccine remains efficacious. In order to contribute to the mitigation of COVID-19 symptoms, the pharmaceutical industry aims to develop antiviral drugs to inhibit the SARS-CoV-2 replication and produce anti-inflammatory medications that will inhibit the acute respiratory distress syndrome (ARDS), which is the primary cause of mortality among the COVID-19 patients. In reference to these tasks, this article considers the properties of a medicinal plant named licorice (Glycyrrhiza glabra), whose phytochemicals have shown both antiviral and anti-inflammatory tendencies through previous studies. All the literature was selected through extensive search in various databases such as google scholar, Scopus, the Web of Science, and PubMed. In addition to the antiviral and anti-inflammatory properties, one of the licorice components has an autophagy-enhancing mechanism that studies have suggested to be necessary for COVID-19 treatment. Based on reviewing relevant professional and historical literature regarding the medicinal properties of licorice, it is suggested that it may be worthwhile to conduct in vitro and in vivo studies, including clinical trials with glycyrrhizic and glycyrrhetinic acids together with other flavonoids found in licorice, as there is the potentiality to provide natural interventions against COVID-19 symptoms. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Hip and knee osteoarthritis affects younger people, too
- Authors: Ackerman, Ilana , Kemp, Joanne , Crossley, Kay , Culvenor, Adam , Hinman, Rana
- Date: 2017
- Type: Text , Journal article , Review
- Relation: Journal of Orthopaedic and Sports Physical Therapy Vol. 47, no. 2 (2017), p. 67-79
- Full Text: false
- Reviewed:
- Description: Although osteoarthritis (OA) has traditionally been considered a disease of older age, hip and knee OA can and does affect younger adults, with a profound impact on psychosocial well-being and work capacity. Obesity and a history of traumatic knee injury (eg, anterior cruciate ligament rupture and/or meniscal tear) are key risk factors for the accelerated development of knee OA, while structural hip deformities (including those contributing to femoroacetabular impingement syndrome) are strong predictors of early-onset hip OA. In view of these associations, rising rates of obesity and sports injuries are concerning, and may signal a future surge in OA incidence among younger people. Assessment of hip and knee OA in younger people should focus on a patient-centered history, comprehensive physical examination, performance-based measures, and patient-reported outcome measures to enable monitoring of symptoms and function over time. Referral for imaging should be reserved for people presenting with atypical signs or symptoms that may indicate diagnoses other than OA. Nonpharmacological approaches are core strategies for the management of hip and knee OA in younger people, and these include appropriate disease-related education, activity modifcation (including for work-related tasks), physical therapist-prescribed exercise programs to address identifed physical impairments, and weight control or weight loss. High-quality evidence has shown no beneft of arthroscopy for knee OA, and there are no published clinical trials to support the use of hip arthroscopy for OA. Referral for joint-conserving or joint replacement surgery should be considered when nonpharmacological and pharmacological management strategies are no longer effective. © 2017 Journal of Orthopaedic & Sports Physical Therapy.
Care providers' perspectives on disrespect and abuse of women during facility-based childbirth in Africa : a qualitative systematic review protocol
- Authors: Adinew, Yohannes , Hall, Helen , Marshall, Amy , Kelly, Janet
- Date: 2020
- Type: Text , Journal article , Review
- Relation: JBI Evidence Synthesis Vol. 18, no. 5 (May 2020), p. 1057-1063
- Full Text: false
- Reviewed:
- Description: Objective: The objective of this review is to identify and synthesize the best available qualitative evidence to understand healthcare providers' views on disrespect and abuse of women during facility-based childbirth in Africa. Introduction: Everyday, approximately 800 women die from preventable pregnancy- and childbirth-related causes worldwide; poorer women living in developing countries comprise 99% of these deaths. Maternal mortality has no single cause or solution, but the most effective preventive strategy is ensuring that every woman gives birth in an equipped health facility with the help of skilled providers. Yet, many women decline to attend facility-based delivery, often due to disrespect and abuse received during childbirth. Inclusion criteria: This systematic review will consider studies that include views of care providers regarding disrespect and abuse of women in birthing facilities, including verbal, physical and sexual abuse; stigma; discrimination; substandard care; neglect; and trust and communication problems. Qualitative studies that relate to Africa published in English from 1990 will be included. Methods: PubMed, CINAHL, Embase, Scopus, African Index Medicus and Web of Science, and selected gray literature sources, will be searched for eligible papers. Titles and abstracts of obtained documents will be assessed by the lead reviewer against the inclusion criteria. Identified documents will then be appraised for relevance and rigor by two independent reviewers. Data will be extracted by two independent reviewers and graded according to the ConQual approach.
The influence of probiotics on gastrointestinal tract infections among children attending childcare : a systematic review and meta-analysis
- Authors: Ahmad, Hafiz , Peck, Blake , Terry, Daniel
- Date: 2022
- Type: Text , Journal article , Review
- Relation: Journal of Applied Microbiology Vol. 132, no. 3 (2022), p. 1636-1651
- Full Text:
- Reviewed:
- Description: Current literature related to the impact of probiotics on the incidence of gastrointestinal tract infections (GITIs) has shown mixed results and no systematic review available with pooled analysis exists. Thus, the aim of this systematic review was to provide contemporary evidence regarding the overall and strain-specific influence of probiotics in preventing GITIs among infants and children attending childcare centres. The review shortlisted 18 RCTs after screening through the initial search results of 779 articles. However, only 15 trials were deemed eligible, addressing at least one outcome in the pooled analysis. It is concluded that the supplementation of probiotics (overall effect) may reduce the risk of GITI episode by 26%, with Lacticaseibacillus paracasei, Limosilactobacillus reuteri and Lacticaseibacillus rhamnosus GG being specifically potent probiotic strains in reducing GITI episode, duration of infection and absence from childcare respectively. There is insufficient evidence to determine the effect of Bifidobacterium animalis subsp. lactis BB-12 based on the findings of the trials included in this review. © 2021 The Society for Applied Microbiology
Tumour microenvironment and metabolic plasticity in cancer and cancer stem cells : Perspectives on metabolic and immune regulatory signatures in chemoresistant ovarian cancer stem cells
- Authors: Ahmed, Nuzhat , Escalona, Ruth , Leung, Dilys , Chan, Emily , Kannourakis, George
- Date: 2018
- Type: Text , Journal article , Review
- Relation: Seminars in Cancer Biology Vol. 53, no. (2018), p. 265-281
- Full Text:
- Reviewed:
- Description: Cancer stem cells (CSCs) are a sub-population of tumour cells, which are responsible to drive tumour growth, metastasis and therapy resistance. It has recently been proposed that enhanced glucose metabolism and immune evasion by tumour cells are linked, and are modulated by the changing tumour microenvironment (TME) that creates a competition for nutrient consumption between tumour and different sub-types of cells attracted to the TME. To facilitate efficient nutrient distribution, oncogene-induced inflammatory milieu in the tumours facilitate adaptive metabolic changes in the surrounding non-malignant cells to secrete metabolites that are used as alternative nutrient sources by the tumours to sustain its increasing energy needs for growth and anabolic functions. This scenario also affects CSCs residing at the primary or metastatic niches. This review summarises recent advances in our understanding of the metabolic phenotypes of cancer cells and CSCs and how these processes are affected by the TME. We also discuss how the evolving TME modulates tumour cells and CSCs in cancer progression. Using previously described proteomic and genomic platforms, ovarian cancer cell lines and a mouse xenograft model we highlight the existence of metabolic and immune regulatory signatures in chemoresistant ovarian CSCs, and discuss how these processes may affect recurrence in ovarian tumours. We propose that progress in cancer control and eradication may depend not only on the elimination of highly chemoresistant CSCs, but also in designing novel strategies which would intervene with the tumour-promoting TME factors.
Ovarian cancer, cancer stem cells and current treatment strategies : a potential role of magmas in the current treatment methods
- Authors: Ahmed, Nuzhat , Kadife, Elif , Raza, Ali , Short, Mary , Jubinsky, Paul , Kannourakis, George
- Date: 2020
- Type: Text , Journal article , Review
- Relation: Cells Vol. 9, no. 3 (Mar 2020), p. 35
- Full Text:
- Reviewed:
- Description: Epithelial ovarian cancer (EOC) constitutes 90% of ovarian cancers (OC) and is the eighth most common cause of cancer-related death in women. The cancer histologically and genetically is very complex having a high degree of tumour heterogeneity. The pathogenic variability in OC causes significant impediments in effectively treating patients, resulting in a dismal prognosis. Disease progression is predominantly influenced by the peritoneal tumour microenvironment rather than properties of the tumor and is the major contributor to prognosis. Standard treatment of OC patients consists of debulking surgery, followed by chemotherapy, which in most cases end in recurrent chemoresistant disease. This review discusses the different origins of high-grade serous ovarian cancer (HGSOC), the major sub-type of EOC. Tumour heterogeneity, genetic/epigenetic changes, and cancer stem cells (CSC) in facilitating HGSOC progression and their contribution in the circumvention of therapy treatments are included. Several new treatment strategies are discussed including our preliminary proof of concept study describing the role of mitochondria-associated granulocyte macrophage colony-stimulating factor signaling protein (Magmas) in HGSOC and its unique potential role in chemotherapy-resistant disease.
Family needs and involvement in the intensive care unit : A literature review
- Authors: Al Mutair, Abbas , Plummer, Virginia , O'Brien, Anthony , Clerehan, Rosemary
- Date: 2013
- Type: Text , Journal article , Review
- Relation: Journal of Clinical Nursing Vol. 22, no. 13-14 (2013), p. 1805-1817
- Full Text: false
- Reviewed:
- Description: Aims and objectives: To understand the needs of critically ill patient families', seeking to meet those needs and explore the process and patterns of involving family members during routine care and resuscitation and other invasive procedures. Methods: A structured literature review using Cumulative Index to Nursing and Allied Health Literature, Pubmed, Proquest, Google scholar, Meditext database and a hand search of critical care journals via identified search terms for relevant articles published between 2000 and 2010. Results: Thirty studies were included in the review either undertaken in the Intensive Care Unit or conducted with critical care staff using different methods of inquiry. The studies were related to family needs; family involvement in routine care; and family involvement during resuscitation and other invasive procedures. The studies revealed that family members ranked both the need for assurance and the need for information as the most important. They also perceived their important needs as being unmet, and identified the nurses as the best staff to meet these needs, followed by the doctors. The studies demonstrate that both family members and healthcare providers have positive attitudes towards family involvement in routine care. However, family members and healthcare providers had significantly different views of family involvement during resuscitation and other invasive procedures. Conclusion: Meeting Intensive Care Unit family needs can be achieved by supporting and involving families in the care of the critically ill family member. More emphasis should be placed on identifying the family needs in relation to the influence of cultural values and religion held by the family members and the organisational climate and culture of the working area in the Intensive Care Unit. © 2013 Blackwell Publishing Ltd.
Anxiety and clinical performance in simulated setting in undergraduate health professionals education : An integrative review
- Authors: Al-Ghareeb, Amal , Cooper, Simon J. , McKenna, Lisa
- Date: 2017
- Type: Text , Journal article , Review
- Relation: Clinical Simulation in Nursing Vol. 13, no. 10 (2017), p. 478-491
- Full Text: false
- Reviewed:
- Description: Background Undergraduate health professionals clearly experience anxiety during simulation. However, little is known regarding learners’ physiological and psychological responses and the influence of these responses on performance. Method An integrative review was undertaken to provide a comprehensive understanding of the influence of anxiety on undergraduate health professionals’ performance during simulation, and to review the tools and measurements reported in the healthcare literature. Result Eleven articles were included showing simulation aroused learners physiologically and psychologically, either improving or declining clinical performance. Conclusion Two contrasting perceptions emerged, which are indicative of the current lack of understanding regarding the effects of anxiety on performance in a simulation setting. © 2017 International Nursing Association for Clinical Simulation and Learning
Eye tracking to investigate cue processing in medical decision making : A scoping review
- Authors: Al-Moteri, Modi , Symmons, Mark , Plummer, Virginia , Cooper, Simon J.
- Date: 2017
- Type: Text , Journal article , Review
- Relation: Computers in Human Behavior Vol. 66, no. (2017), p. 52-66
- Full Text: false
- Reviewed:
- Description: Eye-tracking techniques have been adopted as a research tool for a wide range of applications in healthcare studies. Recently, healthcare researchers have started to show interest in using eye-tracking techniques to study medical decision-making. Mapping the literature pertaining to eye tracking using a systematic approach is valuable at this point to bring together all the studies to date on how medical decision-makers make decisions, and the results may contribute to clinical training. This review follows Arksey and O'Malley's scoping review framework to improve our understanding of visual cue processing in medical decision-making. A diverse range of studies was identified, and the results are presented descriptively to develop a more coherent understanding of different aspects of cue processing and errors in medical decision-making. The review shows the need for more extensive investigations of cue processing and medical decision-making. Crown Copyright (C) 2016 Published by Elsevier Ltd. All rights reserved.
Clinical deterioration of ward patients in the presence of antecedents : A systematic review and narrative synthesis
- Authors: Al-Moteri, Modi , Plummer, Virginia , Cooper, Simon J. , Symmons, Mark
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Australian Critical Care Vol. 32, no. 5 (2019), p. 411-420
- Full Text: false
- Reviewed:
- Description: Aim: The aim of this review was to identify and synthesise published accounts of recognising and responding to patient deterioration in the presence of deterioration antecedents. Design: The systematic review canvassed four electronic databases/ search engines for studies of adult ward patients who had altered physiological parameters before developing major adverse events. Synthesis Methods: The findings were synthesised using a narrative approach. Results: Clinical deterioration can be missed by nurses, even with adequate charting. Delays in recognising and responding to patient deterioration remains an international patient safety concern, and strategies to enhance recognition of patient deterioration have not achieved consistent improvements. The lack of significant and sustained improvement through targeted training suggests the problem may be rooted in human behaviour and local ward culture. Nurses play a pivotal role in recognising and responding to patient deterioration; however, patient records do not facilitate tracking of all nurse decisions and actions, and any undocumented care cannot be easily captured by auditing processes. Conclusion: Failure to recognise clinical deterioration was evident even with adequate charting. It is not clear if nurses do not recognise clinical deterioration because they failed to interpret the signs of deterioration or they made a conscious decision not to escalate based on their clinical judgement or they lacked attention at the time of the event. Whatever the reason, focus is warranted for nurses' decisionmaking after the recording of clinical deterioration signs and the role of human factors in delayed recognition, before maximum benefit of any strategy can be achieved.
Knowledge and awareness of diabetes mellitus and its risk factors in Saudi Arabia
- Authors: Alanazi, Faisal , Alotaibi, Jazi , Paliadelis, Penny , Alqarawi, Nada , Alsharari, Abdaldarem , Albagawi, Bander
- Date: 2018
- Type: Text , Journal article , Review
- Relation: Saudi Medical Journal Vol. 39, no. 10 (2018), p. 981-989
- Full Text:
- Reviewed:
- Description: Objectives: To summarize available peer-reviewed publications about public knowledge and awareness of diabetes mellitus (DM) among the population of Saudi Arabia. Methods: We followed the standard reporting guidelines outlined in the PRISMA statement for the preparation of this systematic review. In February 2018 we conducted literature searches of PubMed, Scopus, BIOSIS Citation Index, and Web of Science using the following keywords: “Knowledge” OR “Awareness” AND “Diabetes Mellitus” AND “Saudi Arabia.” Records were screened, and relevant studies were selected and synthesized narratively. Results: Nineteen articles are included in our systematic review. These studies included the following populations: DM patients (n=13), healthcare workers (n=3), medical students (n=1), secondary school students (n=1), and general population (n=1). Most studies found a lack of public awareness of the risk factors and complications of DM. Among medical students and healthcare workers, knowledge about the epidemiology of the disease and angle of insulin injection was deficient. Conclusion: This review highlights the need for increased knowledge and awareness of DM among the Saudi population. The means of improving knowledge and awareness of DM needs to be integrated into existing healthcare systems and processes to better inform patients, families, and communities about this chronic disease.
Adolescent pornography use : A systematic literature review of research trends 2000-2017
- Authors: Alexandraki, Kyriaki , Stavropoulos, Vasileios , Anderson, Emma , Latifi, Mohammad , Gomez, Rapson
- Date: 2018
- Type: Text , Journal article , Review
- Relation: Current Psychiatry Reviews Vol. 14, no. 1 (2018), p. 47-58
- Full Text: false
- Reviewed:
- Description: Background: Pornography Use (PU) has been defined as the viewing of explicit materials in the form of pictures and videos, in which people are performing intercourse with clearly exposed and visible genitals. The prevalence of PU has increased dramatically among adolescents, partly attributed to the wide availability of such online material. Objective: The aim of this systematic literature review is to map the research interest in the field and to examine whether statistically significant results have emerged from the areas of research focus. Methods: To address these aims: a) the PRISMA guidelines are adopted and; b) an integrative conceptualization (derived from the merging of two widely accepted models of understanding of Internet use behaviours) was introduced to guide the synthesis of the findings. Results: In total, 57 studies were integrated into the present literature review. Findings were concep-tualized/ classified into individual, contextual and activity factors related to PU in adolescence. In that context, individual associated factors, such as development, victimization, mental health and religiosity, appear to have primarily captivated research interest demonstrating significant relationships with adolescent PU. Conclusion: Results indicate that more research focus on contextual and activity related factors is required to improve the level of understanding of adolescent PU and to inform a more holistic conceptual framework of understanding of the phenomenon during adolescence that could potentially guide future research.
Roles of selective agriculture practices in sustainable agricultural performance : a systematic review
- Authors: Ali, Basharat , Dahlhaus, Peter
- Date: 2022
- Type: Text , Journal article , Review
- Relation: Sustainability (Switzerland) Vol. 14, no. 6 (2022), p.
- Full Text:
- Reviewed:
- Description: Feeding the growing global population while improving the Earth’s economic, environmental, and social values is a challenge recognised in both the United Nations Sustainable Development Goals and the United Nations Framework Convention on Climate Change. Sustaining global agricultural performance requires regular revision of current farming models, attitudes, and practices. In systematically reviewing the international literature through the lens of the sustainability framework, this paper specifically identifies precision conservation agriculture (PCA), digital agriculture (DA), and resilient agriculture (RA) practices as being of value in meeting future challenges. Each of these adaptations carries significantly positive relationships with sustaining agricultural performance, as well as positively mediating and/or moderating each other. While it is clear from the literature that adopting PCA, DA, and RA would substantially improve the sustainability of agricultural performance, the uptake of these adaptations generally lags. More in-depth social science research is required to understand the value propositions that would encourage uptake of these adaptations and the barriers that prevent them. Recommendations are made to explore the specific knowledge gap that needs to be understood to motivate agriculture practitioners to adopt these changes in practice. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Bone char as a green sorbent for removing health threatening fluoride from drinking water
- Authors: Alkurdi, Susan , Al-Juboori, Raed , Bundschuh, Jochen , Hamawand, Ihsan
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Environment International Vol. 127, no. (2019), p. 704-719
- Full Text:
- Reviewed:
- Description: Millions of people around the world suffer from or prone to health problems caused by high concentration of fluoride in drinking water sources. One of the environmentally friendly and cost-effective ways for removing fluoride is the use of bone char. In this review, the structural properties and binding affinity of fluoride ions from different water sources was critically discussed. The effect of experimental conditions on enhancing the adsorption capacity of fluoride ions using bone char samples was addressed. It appears that surface properties, and conditions of the bone char production such as temperature and residence time play an important role in designing the optimal fluoride removal process. The optimum temperature for fluoride removal seems to be in the range of 500–700 °C and a residence time of 2 h. Applying various equilibrium adsorption isotherms for understanding fluoride adsorption mechanism was presented. The effect of bone char modification with different elements were discussed and recommendations for a further increase in the removal efficiency was proposed. Cost of bone char production and large-scale treatment systems were also discussed based on information available from scientific and commercial sources. Challenges with existing domestic defluoridation designs were highlighted and suggestions for new conceptual designs were provided.
Biochar versus bone char for a sustainable inorganic arsenic mitigation in water : What needs to be done in future research?
- Authors: Alkurdi, Susan , Herath, Indika , Bundschuh, Jochen , Al-Juboori, Raed , Vithanage, Meththika , Mohan, Dinesh
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Environment International Vol. 127, no. (2019), p. 52-69
- Full Text:
- Reviewed:
- Description: Arsenic (As) is an emerging contaminant on a global scale posing threat to environmental and human health. The relatively brief history of the applications of biochar and bone char has mapped the endeavors to remove As from water to a considerable extent. This critical review attempts to provide a comprehensive overview for the first time on the potential of bio- and bone-char in the immobilization of inorganic As in water. It seeks to offer a rational assessment of what is existing and what needs to be done in future research as an implication for As toxicity of human health risks through acute and chronic exposure to As contaminated water. Bio- and bone-char are recognized as promising alternatives to activated carbon due to their lower production and activation cost. The surface modification via chemical methods has been adopted to improve the adsorption capacity for anionic As species. Surface complexation, ion exchange, precipitation and electrostatic interactions are the main mechanisms involved in the adsorption of As onto the char surface. However, arsenic-bio-bone char interactions along with their chemical bonding for the removal of As in aqueous solution is still a subject of debate. Hence, the proposed mechanisms need to be scrutinized further using advanced analytical techniques such as synchrotron-based X-ray. Moving this technology from laboratory phase to field scale applications is an urgent necessity in order to establish a sustainable As mitigation in drinking water on a global scale.
Categorising the broad impacts of continuing professional development : a scoping review
- Authors: Allen, Louise , Palermo, Claire , Armstrong, Elizabeth , Hay, Margaret
- Date: 2019
- Type: Text , Journal article , Review
- Relation: Medical Education Vol. 53, no. 11 (2019), p. 1087-1099
- Full Text: false
- Reviewed:
- Description: Context: A number of systematic reviews have evaluated the impacts of continuing professional development (CPD). These reviews, due to their focused nature, may fail to capture the full range of impacts of CPD. This scoping review aims to explore the broader impacts of CPD with the intention of developing a categorisation of the types of impact of CPD. Methods: The authors searched MEDLINE, CINAHL and ERIC databases for studies published between 2007 and 2017 that looked at the impacts of formal CPD programmes for all health professionals. Studies were independently screened for eligibility; one reviewer charted data for all included studies, a sample of 10% was reviewed by a second reviewer. The charted data were analysed using both qualitative and quantitative content analysis. Results: The search returned 2750 manuscripts; 192 manuscripts describing 191 studies were included in this review. Most articles were from the USA (78 studies, 41%) and included medical doctors in the population (105 studies, 55%). Twelve categories of impact were generated through conventional content analysis: knowledge, practice change, skill, confidence, attitudes, career development, networking, user outcomes, intention to change, organisational change, personal change and scholarly accomplishments. Knowledge was most commonly measured (103 studies, 54%), whereas measurement of scholarly accomplishments was the least common (10 studies, 5%). Conclusions: Existing evidence takes a narrow view when assessing the impacts of CPD. Emphasis on measuring impacts as knowledge, behaviour, confidence, skills and attitudes may be due to the widely accepted four levels of evaluation from the Kirkpatrick Model or because the majority of studies used quantitative methods. The categories proposed in this review may be used to capture a broader view of the impacts of CPD programmes, contributing to the evidence base for their value and translating into CPD programmes that truly transform health professionals, their careers and their practice. © 2019 John Wiley & Sons Ltd and The Association for the Study of Medical Education
Bachelor of Science in Nursing students' perceptions of being a nurse : a scoping review
- Authors: Allen, Louise , Cooper, Simon , Missen, Karen
- Date: 2022
- Type: Text , Journal article , Review
- Relation: Journal of Professional Nursing Vol. 42, no. (2022), p. 281-289
- Full Text: false
- Reviewed:
- Description: Background: High attrition rates in new graduate nurses maybe attributed to unrealistic perceptions of being a nurse. It is therefore important to identify nursing students' perceptions and the factors that influence them. Aim: The present study was conducted to identify and describe the literature relating to nursing students' perceptions of being a nurse. Research questions guiding the review were: (1) What are nursing students' perceptions of nursing? (2) What factors influence nursing students' perceptions of nursing? Method: A scoping literature review was conducted between the years 2008 and March 2022 to capture nursing student perceptions from multiple countries, and year levels of study to note the changes in perceptions overtime. The data sources consisted of five electronic data bases; CINAHL, Medline, PsychINFO, Scopus, and Web of Science and search engine Google Scholar revealed 39 relevant sources. A scoping review methodology informed by the Joanna Briggs Institute and a published Scoping Review Checklist guided this review. An inductive thematic analysis identified five key themes. Results: Key themes: Attributes and characteristics of nurses; Nursing as a profession; Skills required for nursing; Gender perceptions; and Influence of time and previous health work experience. Findings provide insight for future research to ensure the adequacy of curricula experiences in preparing new graduates for having realistic perceptions for practice. Conclusion: For nursing students to be prepared for the role of a nurse they must have realistic perceptions of what it means to be a nurse. Whilst it is evident that perceptions can be influenced by a variety of sources, this review highlights a lack of research pertaining to perceptions related to the physical, emotional, and social effects on an individual from being a nurse. © 2022