scholarly journals Review of Biochar Properties and Remediation of Metal Pollution of Water and Soil

2020 ◽  
Vol 10 (27) ◽  
Author(s):  
Abudu Ballu Duwiejuah ◽  
Abdul Halim Abubakari ◽  
Albert Kojo Quainoo ◽  
Yakubu Amadu
Keyword(s):  
Toxic Metals ◽  
Raw Materials ◽  
Toxic Metal ◽  
Cost Effective ◽  
Small Scale ◽  
Metal Contaminants ◽  
Middle Income ◽  
Middle Income Countries ◽  
Financial Interests ◽  
Low And Middle Income

Background. Mining, waste disposal, and agrochemical residues have contributed to pollution of water and soil with toxic metals in most low- and middle-income countries, raising concerns of ecological safety and public health. This has prompted many studies into the production and utilization of biochars to adsorb toxic metal contaminants from soil and water. Objective. The present study presents a review of biochar properties, the mechanisms of toxic metal adsorption onto biochar, and sorption of toxic metal contaminants in water and soil in small scale applications and laboratory experiments. Methods. A total of 305 articles were collected, and after screening for relevance, a final of 164 articles from both high- and low- and middle-income countries were used in this review paper. Discussion. Biochar for sorption has proven effective and its raw materials are readily available, cost effective, environmentally stable and a good form of waste management. Conclusions. Different techniques of biochar production influence the properties of biochar and adsorption of toxic metals from water and soil. Competing Interests. The authors declare no competing financial interests.

scholarly journals Achieving Viral Suppression in 90% of People Living With Human Immunodeficiency Virus on Antiretroviral Therapy in Low- and Middle-Income Countries: Progress, Challenges, and Opportunities

2018 ◽  
Vol 66 (10) ◽  
pp. 1487-1491 ◽  
Author(s):  
Jean B Nachega ◽  
Nadia A Sam-Agudu ◽  
Lynne M Mofenson ◽  
Mauro Schechter ◽  
John W Mellors
Keyword(s):  
Human Immunodeficiency Virus ◽  
Viral Suppression ◽  
Cost Effective ◽  
Term Treatment ◽  
Middle Income ◽  
Middle Income Countries ◽  
Long Term Treatment ◽  
Wide Range ◽  
Immunodeficiency Virus ◽  
Low And Middle Income

Abstract Although significant progress has been made, the latest data from low- and middle-income countries show substantial gaps in reaching the third “90%” (viral suppression) of the UNAIDS 90-90-90 goals, especially among vulnerable and key populations. This article discusses critical gaps and promising, evidence-based solutions. There is no simple and/or single approach to achieve the last 90%. This will require multifaceted, scalable strategies that engage people living with human immunodeficiency virus, motivate long-term treatment adherence, and are community-entrenched and ‑supported, cost-effective, and tailored to a wide range of global communities.

scholarly journals Older People, Mobility and Transport in Low- and Middle-Income Countries: A Review of the Research

2019 ◽  
Vol 11 (21) ◽  
pp. 6157 ◽  
Author(s):  
Mark Gorman ◽  
Sion Jones ◽  
Jeffrey Turner
Keyword(s):  
Older People ◽  
Low Income ◽  
Well Being ◽  
The State ◽  
Small Scale ◽  
Knowledge Gaps ◽  
Middle Income ◽  
Middle Income Countries ◽  
The Impact ◽  
Low And Middle Income

Older populations are rising globally, which in high-income countries has helped to generate a growing literature on the impact of ageing on travel requirements and transport policy. This article aims to provide an initial assessment of the state of knowledge on the impact on transportation policy and usage of the increasing numbers of older people in low- and middle-income countries (LAMICs), through a review of the literature relating to older people and transportation. As both the academic and policy/practice-related literature specifically addressing ageing and transport in LAMICs is limited, the study looks beyond transportation to assess the state of knowledge regarding the ways in which older people’s mobility is affected by issues, such as health, well-being, social (dis)engagement and gender. We find significant knowledge gaps, resulting in an evidence base to support the implementation of policy is lacking. Most research in low-income countries (LICs) is either broad quantitative analysis based on national survey data or small-scale qualitative studies. We conclude that, although study of the differing contexts of ageing in LAMICs as they relate to older people’s mobilities and transport use has barely begun, institutions which both make and influence policymaking recognise the existence of significant knowledge gaps. This should provide the context in which research agendas can be established.

scholarly journals Patients' perceptions of self-management of high blood pressure in three low- and middle-income countries: findings from the BPMONITOR study

2020 ◽  
Vol 5 ◽  
Author(s):  
Tala Al-Rousan ◽  
M. Amalia Pesantes ◽  
Sufia Dadabhai ◽  
Namratha R. Kandula ◽  
Mark D. Huffman ◽  
...  
Keyword(s):  
Blood Pressure ◽  
High Blood Pressure ◽  
Cost Effective ◽  
Self Management ◽  
Middle Income ◽  
Self Monitoring ◽  
Caregiver Support ◽  
Middle Income Countries ◽  
Perceptions And Attitudes ◽  
Low And Middle Income

Abstract Hypertension is the leading risk factor for global disease burden. Self-management of high blood pressure (BP) through self-monitoring and self-titration of medications, has proved to be one successful and cost-effective tool to achieve better BP control in many high-income countries but not much is known about its potential in low- and middle-income countries (LMICs). We used semi-structured questionnaires and focus groups in three LMICs; Peru, Cameroon and Malawi to examine perceptions and attitudes of patients diagnosed with essential hypertension towards living with hypertension, BP measurement and treatment, patient–physician relationship and opinions about self-management of high blood pressure. Results in all three countries were comparable. Patients showed varied levels of health literacy related to hypertension. BP measurement habits were mostly affected by resources available and caregiver support. Treatment and adherence to it were primarily affected by cost. Most patients were welcoming of the idea of self-management but skeptical about the ability to do self-monitoring accurately and the safety involving self-titration of medications.

scholarly journals Strategies to Improve Stroke Care Services in Low- and Middle-Income Countries: A Systematic Review

2017 ◽  
Vol 49 (1-2) ◽  
pp. 45-61 ◽  
Author(s):  
Jeyaraj Durai Pandian ◽  
Akanksha G. William ◽  
Mahesh P. Kate ◽  
Bo Norrving ◽  
George A. Mensah ◽  
...  
Keyword(s):  
Systematic Review ◽  
Health Care Services ◽  
Cost Effective ◽  
Stroke Care ◽  
Evidence Based ◽  
Middle Income ◽  
Middle Income Countries ◽  
Care Services ◽  
Stroke Services ◽  
Low And Middle Income

Background: The burden of stroke in low- and middle-income countries (LMICs) is large and increasing, challenging the already stretched health-care services. Aims and Objectives: To determine the quality of existing stroke-care services in LMICs and to highlight indigenous, inexpensive, evidence-based implementable strategies being used in stroke-care. Methods: A detailed literature search was undertaken using PubMed and Google scholar from January 1966 to October 2015 using a range of search terms. Of 921 publications, 373 papers were shortlisted and 31 articles on existing stroke-services were included. Results: We identified efficient models of ambulance transport and pre-notification. Stroke Units (SU) are available in some countries, but are relatively sparse and mostly provided by the private sector. Very few patients were thrombolysed; this could be increased with telemedicine and governmental subsidies. Adherence to secondary preventive drugs is affected by limited availability and affordability, emphasizing the importance of primary prevention. Training of paramedics, care-givers and nurses in post-stroke care is feasible. Conclusion: In this systematic review, we found several reports on evidence-based implementable stroke services in LMICs. Some strategies are economic, feasible and reproducible but remain untested. Data on their outcomes and sustainability is limited. Further research on implementation of locally and regionally adapted stroke-services and cost-effective secondary prevention programs should be a priority.

scholarly journals Wastewater-Based Epidemiology for Cost-Effective Mass Surveillance of COVID-19 in Low- and Middle-Income Countries: Challenges and Opportunities

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2897
Author(s):  
Sadhana Shrestha ◽  
Emi Yoshinaga ◽  
Saroj K. Chapagain ◽  
Geetha Mohan ◽  
Alexandros Gasparatos ◽  
...  
Keyword(s):  
Population Size ◽  
Cost Effective ◽  
Management Systems ◽  
Current Evidence ◽  
Wastewater Management ◽  
Middle Income ◽  
Middle Income Countries ◽  
Challenges And Opportunities ◽  
Mass Surveillance ◽  
Low And Middle Income

Wastewater-based epidemiology (WBE) is an approach that can be used to estimate COVID-19 prevalence in the population by detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in wastewater. As the WBE approach uses pooled samples from the study population, it is an inexpensive and non-invasive mass surveillance method compared to individual testing. Thus, it offers a good complement in low- and middle-income countries (LMICs) facing high costs of testing or social stigmatization, and it has a huge potential to monitor SARS-CoV-2 and its variants to curb the global COVID-19 pandemic. The aim of this review is to systematize the current evidence about the application of the WBE approach in mass surveillance of COVID-19 infection in LMICs, as well as its future potential. Among other parameters, population size contributing the fecal input to wastewater is an important parameter for COVID-19 prevalence estimation. It is easier to back-calculate COVID-19 prevalence in the community with centralized wastewater systems, because there can be more accurate estimates about the size of contributing population in the catchment. However, centralized wastewater management systems are often of low quality (or even non-existent) in LMICs, which raises a major concern about the ability to implement the WBE approach. However, it is possible to mobilize the WBE approach, if large areas are divided into sub-areas, corresponding to the existing wastewater management systems. In addition, a strong coordination between stakeholders is required for estimating population size respective to wastewater management systems. Nevertheless, further international efforts should be leveraged to strengthen the sanitation infrastructures in LMICs, using the lessons gathered from the current COVID-19 pandemic to be prepared for future pandemics.

scholarly journals Awareness and utilization of personal protective equipment among small-scale welders in Cross River State, Nigeria: a descriptive cross-sectional study

2021 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Ekpereonne Esu ◽  
Utibeabasi Ekanem
Keyword(s):  
Personal Protective Equipment ◽  
Small Scale ◽  
Protective Equipment ◽  
Cross Sectional ◽  
Rapid Urbanization ◽  
Middle Income ◽  
Cross River ◽  
Cross River State ◽  
Middle Income Countries ◽  
Low And Middle Income

Objective: Rapid urbanization and industrialization in the many low- and middle-income countries means that there is a growing demand for the welding industry. Previous studies in Nigeria, and other low- and middle-income countries have reported a significant discrepancy between awareness and consistent and appropriate use of personal protective equipment (PPE). This study assessed the awareness and utilization of PPE among small-scale welders in Calabar South, Cross River State, Nigeria. Methods: This study was conducted in Calabar South Local Government Area using a descriptive cross-sectional design. Data collection was with an interviewer-administered semi-structured questionnaire, and an observation checklist was used to monitor the use of PPE among small-scale welders. Results:  One hundred and sixteen small-scale welders were surveyed with a mean age of 34.9 ±9.1 years. Almost 90% of respondents had completed at least primary education. Eighty-one respondents (69.8%) were aware of PPE. Three-quarters of respondents (61/81) knew PPE protected the user from injury. The most frequently identified type of welding PPE among the respondents aware of PPE, were safety goggles (38.3%), hand gloves (25.9%), safety boots (19.8%), and coveralls (9.9%). 83.6% had access to PPE at work. However, only 14.4% reported using PPE consistently. Observation revealed that the PPE most frequently used, sunglasses, were not the recommended welding goggles. Conclusion:  The low utilization of PPE calls for stricter enforcement of occupational health and safety regulations among welders in the informal sector, including implementing PPE awareness programs.

scholarly journals Building youth and family resilience for better mental health: developing and testing a hybrid model of intervention in low- and middle-income countries

2021 ◽  
pp. 1-3
Author(s):  
Debasish Basu ◽  
Sugandha Nagpal ◽  
Renjith R. Pillai ◽  
Victoria Mutiso ◽  
David Ndetei ◽  
...  
Keyword(s):  
Mental Health ◽  
Health Beliefs ◽  
Hybrid Model ◽  
Cost Effective ◽  
Family Resilience ◽  
Childhood Experiences ◽  
Middle Income ◽  
Middle Income Countries ◽  
The Individual ◽  
Low And Middle Income

Summary Resilience is a dynamic, multi-level, multi-systemic process of positive adaptation at the individual, family and community levels. Promoting resilience can be a cost-effective form of preventive and early intervention, offering significant health advantages for young people throughout their lives. Developing resiliency interventions for youth and their families in low- and middle-income countries (LMICs), particularly in the context of the ongoing pandemic, is especially important given a lack of services and trained specialists, and poor levels of public spend on mental health, alongside marked and clustered psychosocial disadvantages and adverse childhood experiences. We propose a ‘hybrid’ model targeting 10- to 17 year-old children and their families, and options to engage through communities, schools and the family unit. These options will enhance individual and family resilience, and possibly buffer against adversity. The adaptations respect cultural and health beliefs, take account of structural drivers of inequalities and are suitable for LMICs.

scholarly journals Complementary Feeding Diets Made of Local Foods Can Be Optimized, but Additional Interventions Will Be Needed to Meet Iron and Zinc Requirements in 6- to 23-Month-Old Children in Low- and Middle-Income Countries

2016 ◽  
Vol 37 (4) ◽  
pp. 544-570 ◽  
Author(s):  
Saskia J. M. Osendarp ◽  
Britt Broersen ◽  
Marti J. van Liere ◽  
Luz M. De-Regil ◽  
Lavannya Bahirathan ◽  
...  
Keyword(s):  
Cost Effective ◽  
Local Foods ◽  
Nutrient Requirements ◽  
Nutrient Intakes ◽  
Middle Income ◽  
Middle Income Countries ◽  
Modeling Techniques ◽  
Iron And Zinc ◽  
Calcium Iron ◽  
Low And Middle Income

Background: The question whether diets composed of local foods can meet recommended nutrient intakes in children aged 6 to 23 months living in low- and middle-income countries is contested. Objective: To review evidence of studies evaluating whether (1) macro- and micronutrient requirements of children aged 6 to 23 months from low- and middle-income countries are met by the consumption of locally available foods (“observed intake”) and (2) nutrient requirements can be met when the use of local foods is optimized, using modeling techniques (“modeled intake”). Methods: Twenty-three articles were included after conducting a systematic literature search. To allow for comparisons between studies, findings of 15 observed intake studies were compared against their contribution to a standardized recommended nutrient intake from complementary foods. For studies with data on intake distribution, %< estimated average requirements were calculated. Results: Data from the observed intake studies indicate that children aged 6 to 23 months meet requirements of protein, while diets are inadequate in calcium, iron, and zinc. Also for energy, vitamin A, thiamin, riboflavin, niacin, folate, and vitamin C, children did not always fulfill their requirements. Very few studies reported on vitamin B6, B12, and magnesium, and no conclusions can be drawn for these nutrients. When diets are optimized using modeling techniques, most of these nutrient requirements can be met, with the exception of iron and zinc and in some settings calcium, folate, and B vitamins. Conclusion: Our findings suggest that optimizing the use of local foods in diets of children aged 6 to 23 months can improve nutrient intakes; however, additional cost-effective strategies are needed to ensure adequate intakes of iron and zinc.

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