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Background and objective: Tools to accurately and efficiently measure dietary intake in Nigeria are lacking. We aimed to develop and assess the usability of a new online dietary assessment tool for Nigeria—myfood24 West Africa. Methods: We developed the myfood24 West Africa database using data from existing food composition tables, packaged foods labels and research articles. The development followed seven steps: identified data sources, selected foods, processed/cleaned the data, calculated the nutrient content of recipes, created and allocated portion sizes, quality-checked the database and developed food accompaniments. To pilot the tool, we recruited 179 university staff in Nigeria using a cross-sectional design. Usability was assessed using a questionnaire that included the System Usability Scale (SUS) and a feedback session. Results: The database included 924 foods, with up to 54 nutrients and 35 portion-size images allocated to foods. Sixty percent of the data were sourced from the 2019 West Africa Food Composition Table, 17% from back-of-pack labels of packaged foods, 14% from the 2017 Nigerian Food Composition Table, 5% from generated recipes and 4% from the published literature. Of the participants, 30% (n = 53) self-recorded their food intake, with a total of 1345 food and drink entries from both self- and interviewer-collected data. The mean SUS score of 74 (95% CI: 68,79) indicated good usability. The feedback showed that the tool was user-friendly, educational and included a variety of local foods. Conclusions: This new tool will enhance the dietary assessment of the Nigerian population. More work will expand coverage to include more foods from the region. [ABSTRACT FROM AUTHOR]

Informal healthcare providers (IHPs) often serve as the first point of contact for healthcare services for non-communicable diseases in urban slums and their ability to identify risk factors and symptoms of the diseases is crucial for early detection and management. This paper assesses level of knowledge of hypertension and diabetes mellitus (DM) among IHPs. A cross-sectional survey was conducted in eight slums in Enugu and Onitsha cities in south-eastern Nigeria. Data was collected from 238 IHPs including patent medicine vendors, traditional birth attendants, traditional bonesetters, and herbalists. Knowledge scores were computed for each respondent. Adequate knowledge was set at ≥ 50% score and inadequate knowledge at < 50%. Binary logistic regression analysis was used to identify factors/independent variables associated with adequate knowledge among IHPs. Independent variables in the regression model were seven items that describe the profile of IHPs and can influence their access to information on non-communicable diseases. Knowledge of risk factors and symptoms of hypertension and DM among IHPs was low since only 21 (8.82%) and 19 (7.98%) of them had adequate knowledge of hypertension and DM, respectively. In regression analysis, IHPs who had received formal training in the past demonstrated significantly higher levels of knowledge, with odds of adequate knowledge in hypertension being 14.62 times greater for trained providers, and the odds of adequate knowledge of both non-communicable diseases being 21.34 times greater for trained providers. Training of IHPs is needed to address the critical knowledge deficit of risk factors and symptoms of hypertension and DM. This would contribute to better health outcomes and reduced disease burden in urban slums. [ABSTRACT FROM AUTHOR]

Photoactive supramolecular porphyrin assemblies are attractive molecules for light‐harvesting applications. This is due to their relatively non‐toxicity, biological activities and charge and energy exchange characteristics. However, the extreme cost associated with their synthesis and requirements for toxic organic solvents during purification pose a challenge to the sustainability characteristics of their applications. This work presents the first report on the sustainable synthesis, spectroscopic and photophysical characterizations of a near‐infrared (NIR) absorbing Ca(II)‐meso‐tetrakis (4‐hydroxyphenyl)porphyrin using an electrolyzed pyrrole solution. The latter was obtained by cycling the pyrrole solution across the silver nanodumbbell particle surface at room temperature. The electrolyzed solution condensed readily with acidified p‐hydroxybenzaldehyde, producing the targeted purple porphyrin. The non‐electrolyzed pyrrole solution formed a green substance with significantly different optical properties. Remarkable differences were observed in the voltammograms of the silver nanodumbbell particles and those of the conventional gold electrode during the pyrrole cycling, suggesting different routes of porphyrin formation. The rationale behind these formations and the associated mechanisms were extensively discussed. Metalation with aqueous Ca2+ ion caused a Stokes shift of 38.75 eV. The current study shows the advantage of the electrochemical method towards obtaining sustainable light‐harvesting porphyrin at room temperature without the need for high‐energy‐dependent conventional processes. [ABSTRACT FROM AUTHOR]

Monoamine neurotransmitters are essential for learning, mental alertness, emotions, and blood flow, among other functions. Fatal neurological disorders that signal the imbalance of these biomolecules in the human system include Parkinson's disease, myocardial infarction, Alzheimer's disease, hypoglycemia, Schizophrenia, and a host of other ailments. The diagnosis of these monoamine neurotransmitter‐related conditions revolves around the development of analytical tools with high sensitivity for the four major monoamine neurotransmitters namely dopamine, epinephrine, norepinephrine, and serotonin. The application of electrochemical sensors made from notable metal oxide nanoparticles or composites containing the metal oxide nanoparticles for the detection of these monoamine neurotransmitters was discussed herein. More importantly, the feasibility of the application of the ZnO, CuO, and TiO2 nanoparticle‐based electrochemical sensors for a comprehensive diagnosis of monoamine neurotransmitter‐related conditions was critically investigated in this review. [ABSTRACT FROM AUTHOR]

Niobium carbide MXenes belong to a class of metal carbide MXenes with niobium as the early transition metal. The transformation of niobium carbide MXene sheets in to few-layer MXene sheets, the combination of the niobium-based MXene with other materials, delamination, intercalation, and partial oxidation of the niobium carbide MXene sheets have resulted in the formation of a material with excellent energy storage and sensing potentials. Herein, the synthesis and classification of the niobium-based MXenes (NBM), their application as sensing materials for a wide range of analytes, and their energy storage potentials are discussed exhaustively. The various transformations of niobium carbide MXenes over the last two decades are also established in this timely review. Essentially, this review is a searchlight on the prospects of NBM, the current state of their application, and their relevance in the materials research community. [ABSTRACT FROM AUTHOR]

Objective: A mixed‐methods systematic review to determine reported symptoms, concerns, and experiences of women living with and beyond breast cancer in Africa. Methods: Literature searches were conducted in Medline, Embase, PsycINFO, Global Health, Web of Science, CINAHL, and the Cochrane Library. Quantitative and qualitative studies that comprised study populations of women with breast cancer from countries in Africa, detailing symptoms, concerns, and experiences of living with and beyond breast cancer were included. Inductive framework analysis was applied to organise existing literature with the Adversity, Restoration, and Compatibility framework and quality was assessed using the Mixed Methods Appraisal Tool. Results: In total, 48 studies were included, comprising quantitative (n = 24), qualitative (n = 23) and mixed method (n = 1) studies. Women reported multiple complex and burdensome symptoms at all stages of the breast cancer disease trajectory. Multiple pervasive factors influencing participants' experiences included a lack of cancer knowledge, being removed from decision‐making, religion, and the presence and use of traditional medicines. Literature relating to benefit finding, understanding identity for the future, and broader perspectives of well‐being was absent. Conclusions: This review contributes insights and mapping of symptoms, concerns, and experiences of women with breast cancer in Africa. There is a great necessity to increase an understanding of the needs and experiences of women with breast cancer in Africa following cancer treatment, stages of remission, and longer‐term monitoring and follow‐up. This is required to ensure access to prompt and timely clinical and individualized supportive care for women with breast cancer in Africa. [ABSTRACT FROM AUTHOR]

In this study, a novel electrodeposition of poly(2,4,6‐trihydroxybenzaldehyde) on bare glassy carbon electrode for dopamine detection was reported. 2,4,6‐trihydroxybenzaldehyde and the electrodeposited poly(2,4,6‐trihydroxybenzaldehyde) were characterized using Fourier transform‐infrared spectroscopy, UV‐visible spectroscopy, and scanning electron microscopy. The bare electrode modified with the optimum amount of 2,4,6‐trihydroxybenzaldehyde (PTGCE) was used for dopamine electroanalysis. The linear dynamic range and the limit of detection of DA at PTGCE were 0.70‐19.48 μM and 19.48–53.30 μM, and 0.64 μM, respectively. The modified electrode showed outstanding discriminatory dopamine detection in the presence of uric acid and ascorbic acid due to a dopamine‐uric acid and a dopamine‐ascorbic acid peak‐to‐peak separation of 160 mV and 200 mV, respectively. The proposed sensor showed considerable reproducibility of dopamine current response and excellent % dopamine recovery of 99.70 % from the real sample solution. [ABSTRACT FROM AUTHOR]

Background: The low demand for maternal and child health services is a significant factor in Nigeria's high maternal death rate. This paper explores demand and supply-side determinants at the primary healthcare level, highlighting factors affecting provision and utilization. Methods: This qualitative study was undertaken in Anambra state, southeast Nigeria. Anambra state was purposively chosen because a maternal and child health programme had just been implemented in the state. The three-delay model was used to analyze supply and demand factors that affect MCH services and improve access to care for pregnant women/mothers and newborns/infants. Result: The findings show that there were problems with both the demand and supply aspects of the programme and both were interlinked. For service users, their delays were connected to the constraints on the supply side. On the demand side, the delays include poor conditions of the facilities, the roads to the facilities are inaccessible, and equipment were lacking in the facilities. These delayed the utilisation of facilities. On the supply side, the delays include the absence of security (fence, security guard), poor citing of the facilities, inadequate accommodation, no emergency transport for referrals, and lack of trained staff to man equipment. These delayed the provision of services. Conclusion: Our findings show that there were problems with both the demand and supply aspects of the programme, and both were interlinked. For service users, their delays were connected to the constraints on the supply side. [ABSTRACT FROM AUTHOR]

Anticorrosion and adsorption behaviour of synthesized carbohydrazide Schiff bases, namely (Z)-N′-(4-hydroxy-3-methoxybenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide(MBTC) and (Z)-N′-(3,4-dichlorobenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide (CBTC) was examined for mild steel (MS) in 15% HCl medium. The corrosion inhibition study was performed by using gravimetric, thermodynamic, electrochemical and theoretical studies including density functional theory (DFT), molecular dynamic simulation (MDS) and Monte Carlo simulations (MCS). The outcomes in terms of corrosion inhibition efficiency using electrochemical impedance spectroscopy (EIS) method at 303 K and 150 ppm concentration were 96.75% for MBTC and 95.14% for CBTC. Both inhibitors adsorbed on the MS surface through physical as well as chemical adsorption and followed the Langmuir isotherm. The mixed-type nature of both inhibitors was identified by polarization results. Surface analysis was done using FESEM, EDX, AFM and XPS studies and results showed that a protective layer of inhibitor molecules was developed over the surface of MS. The results of DFT, MCS and MDS are in accordance with experimental results obtained by weight loss and electrochemical methods. [ABSTRACT FROM AUTHOR]

Background Sickle cell disease (SCD) describes a group of multisystem, genetic and stigmatising blood conditions that are prevalent in sub-Saharan Africa. Health-related stigma is a negative experience or adverse social judgement about a group based on an enduring feature conferred by a particular health problem. Literature shows that stigmatisation is experienced by people with SCD with negative implications on their lives. This study investigated self-reported views and lived experiences of young adults in Accra, Ghana, regarding SCD-related stigma and its impact on their lives. Methods Data were collected from 19 males and females with SCD using semi-structured individual interviews and focus group discussions. Transcripts were analysed using Braun and Clark's framework for thematic analysis. Results Five themes were identified: exclusion; status loss; SCD misconceptions; internalised stigma; and stigma and health outcomes. Overall, interpersonal and institutional levels of stigma were evident throughout the data with a lack of public education, limited specialist care and religion acting as determinants of SCD-related stigma. Conclusions Stigma has detrimental consequences for young adults with SCD. Multilevel stigmatisation of SCD at interpersonal and institutional levels should be addressed through multipronged approaches including increased public education, investment in specialist healthcare and collaboration with socioreligious institutions. Further research is needed to investigate the experiences of young adults in rural Ghana. [ABSTRACT FROM AUTHOR]

Grasshopper is a micro livestock, rich in animal protein that is consumed as a delicacy, processed using deep-frying as a popular cooking method. The 100 g each of fried grasshopper (Oedalense senegalenes krauss) consisted of 4 treatments of laboratory single session deep-fried grasshoppers in covered utensils using commercial refined vegetable oil at 160°C for 2 minutes were used as control; while non-control samples were locally purchased from 3 ready-to-eat repeated-sessions of deep-fried grasshopper retail outlets in Maiduguri opposite Post Office, Wulari and Bulumkuttu respectively. Samples of grasshoppers were ground to powder and oil was extracted using soxhlet method and analyzed for quality to identify primary functional groups using Fourier Transform Infrared (FTIR) spectrometer. Distance variation in aberration characteristics of non-control oils indicated strong wide band for the O-H stretch around 2540 cm-1 (2500-3300 cm-1) for the carbonyl functional group and a strong C-N stretch (1180-1360 cm11) which produced heterocyclic aromatic amine (HAA). Both functional groups constitute a serious health risk in overheated oil. For food safety and public health advocacy when cooking, frying oil should be discarded after one time use. [ABSTRACT FROM AUTHOR]

Anticorrosion and adsorption behaviour of synthesized carbohydrazide Schiff bases, namely (Z)-N′-(4-hydroxy-3-methoxybenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide(MBTC) and (Z)-N′-(3,4-dichlorobenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide (CBTC) was examined for mild steel (MS) in 15% HCl medium. The corrosion inhibition study was performed by using gravimetric, thermodynamic, electrochemical and theoretical studies including density functional theory (DFT), molecular dynamic simulation (MDS) and Monte Carlo simulations (MCS). The outcomes in terms of corrosion inhibition efficiency using electrochemical impedance spectroscopy (EIS) method at 303 K and 150 ppm concentration were 96.75% for MBTC and 95.14% for CBTC. Both inhibitors adsorbed on the MS surface through physical as well as chemical adsorption and followed the Langmuir isotherm. The mixed-type nature of both inhibitors was identified by polarization results. Surface analysis was done using FESEM, EDX, AFM and XPS studies and results showed that a protective layer of inhibitor molecules was developed over the surface of MS. The results of DFT, MCS and MDS are in accordance with experimental results obtained by weight loss and electrochemical methods. [ABSTRACT FROM AUTHOR]

The global threat which continues to accompany SARS‐CoV‐2 has led to a global response which adopts lockdown and stays home policy as means of curtailing its spread. This study investigates compliance with the Stay Home policy and exposure to COVID‐19 in Nigeria. A survey was conducted from April 4 to May 8, 2020 using a cross‐sectional mixed‐methods approach to elicit responses from 879 participants across six geopolitical zones of Nigeria. Descriptive, χ2, and multiple regression tests were used to analyze survey data using SPSS, whereas NVivo v12 was used for thematic analysis of qualitative data. States with complete lockdown had 72.4% of respondents complying fully with the policy compared with 44.2% of respondents in zones with the partial lockdown. Market places, classified as high‐risk zones, were the most visited (n = 505; 71.0%). Though compliance was influenced by the nature of lockdown enforced (χ2 = 70.385, df = 2; p < 0.05), being a female, a widow, and unemployed were associated with increased compliance. Exposure to COVID‐19 was associated with being married, unemployed, and having no income. Fear, anxiety, and misperception play major roles in compliance. The authors conclude that compliance is not uniform and a more nuanced and targeted approach is required as the government continues to respond to the COVID‐19 global pandemic. Key Points: Exposure to risk of COVID‐19 infection was conditioned by social and economic realities.The nature of lockdown (partial or complete) influenced compliance with stay Home Policy.Visits among family members was higher in areas with complete lockdown compared to area with partial lockdown.Places classified as high‐risk zones (market and religious centres) were the most patronised.Fear, anxiety and misperception play significant roles in compliance with Stay Home Policy. [ABSTRACT FROM AUTHOR]

The editorial in "Frontiers in Chemistry" discusses recent advancements in corrosion inhibition, emphasizing the importance of protecting industrial assets and extending the life of materials. Various studies highlighted in the editorial showcase innovative strategies and materials, such as okra-based polymers, zinc phosphate coatings, plant extracts, and pharmaceutical compounds, that effectively inhibit corrosion on different types of metals. These findings contribute to the ongoing research efforts aimed at developing more efficient, cost-effective, and environmentally friendly corrosion inhibitors to address the global impact of corrosion on industries and infrastructure. [Extracted from the article]

This article is an editorial that discusses recent advancements in corrosion inhibition. Corrosion is a widespread problem that affects various industries and can lead to costly repairs, operational downtime, and environmental disasters. Corrosion inhibitors are substances that create a protective barrier on metal surfaces to prevent or slow down corrosion. The editorial highlights several studies that explore the effectiveness of different corrosion inhibitors, such as a modified okra-based polymer, zinc phosphate-modified epoxy coatings, Tradescantia spathacea extract, palm kernel shell extract, and Prinivil. These studies demonstrate the potential of these inhibitors to effectively protect against corrosion and improve the durability of materials. [Extracted from the article]

Current successes recorded in the use of plant leaves as corrosion inhibitors have been globally admitted as one of the best options. Little attention is paid to the future implication or risks concerning food insecurity, economic challenges and competition in various sectors that employ plants as their raw materials. This study reviewed the potential of plant wastes (such as peels, rinds and other components) as alternative sources of sustainable corrosion inhibitors. The review reveals that through the considerations of experimental and quantum chemical data as well as their chemical constituents, most plant wastes have excellent corrosion inhibition capacity. Those tested and confirmed as good corrosion inhibitors have also been reviewed. Computational chemistry has been implemented to demonstrate how some challenges confronting the understanding of their inhibition mechanism can be resolved. [ABSTRACT FROM AUTHOR]

Probiotics are live microorganisms recognized as natural candidates to substitute antibiotic substances, usually used to treat bacterial infections responsible for numerous human and animal diseases. Antibiotics are mostly prescribed for treating infections caused by bacteria. However, their excessive and inappropriate use has resulted in the increase of bacterial antimicrobial resistance (AMR) and host microbiota imbalance or dysbiosis phenomena. Even though antibiotics are the most well-known lifesaving substances, the AMR within the bacterial community has become a growing threat to global health, with the potential to cause millions of deaths each year in the future. Faced with these worldwide issues, it is high time to discover and develop antibiotic alternatives. There exists some evidence of probiotic roles in antagonizing pathogens, modulating immune systems, and maintaining general host health by restoring the gut microbiota balance. The multi-antimicrobial action mechanisms of such beneficial living microorganisms are one approach to practicing the "prevention is better than cure" concept to avoid antibiotics. The current review proposes a comprehensive description of antibiotic-related AMR issues and the potential of probiotics as antibiotic alternatives, while discussing pros and cons, as well as some evidence of beneficial uses of probiotics for human and animal health protection through recent results of experimental models and clinical trials. [ABSTRACT FROM AUTHOR]

In this study, Oregano (Origanum vulgare) leaf essential oil was studied as an environmental-friendly anticorrosion agent for carbon steel in aggressive hydrochloric acid. The corrosion inhibition of O. vulgare was characterized by surface morphology, electrochemical, weight loss, theoretical and computational methods. It was found that the highest inhibition performance of O. vulgare was 85.64% at 2 g/l in 1 M HCl. The results of Langmuir isotherm and adsorption thermodynamics investigation demonstrated that the O. vulgare inhibitor adsorbed on the metal surface by the formation of rigid covalent bonds. The adsorption and inhibition centers of the selected inhibitor were studied by the computational methods, resulting in that the hydroxyl functional groups and benzoyl rings are mainly responsible for the high inhibition efficiency. [ABSTRACT FROM AUTHOR]

The utilization of organic compounds has been established to be perhaps the best, most proficient, and most powerful method for controlling corrosion. Organic compounds extend into benefits by complexing at the metal-environment interface applying their electron-dense centers, which are known as binding centers. Though, because they have small molecular size, they do not have satisfactory corrosion protection. Accordingly, there is an exceptional requirement for major atomic changes. Toward this path, unique accentuation is put on the utilization of epoxy resins (ERs)-based synthetic monomers as inhibitors for corrosion. The nature of the structure that includes polar functional groups makes the monomers adsorb strongly on the metal surface and give remarkable metal protection. This review report gives a concise outline of the most recent improvements in the utilization of ERs as corrosion inhibitors. This report gives a short outline of the consumption and general utilization of various sorts of ERs and corrosion inhibition processes. [ABSTRACT FROM AUTHOR]

Introduction. Compliance with the Government's lockdown policy is required to curtail community transmission of Covid-19 infection. The objective of this research was to identify places Nigerians visited during the lockdown to help prepare for a response towards future infectious diseases of public health importance similar to Covid-19 Methods. This was a secondary analysis of unconventional data collected using Google Forms and online social media platforms during the COVID-19 lockdown between April and June 2020 in Nigeria. Two datasets from: i) partnership for evidencebased response to COVID-19 (PERC) wave-1 and ii) College of Medicine, University of Lagos perception of and compliance with physical distancing survey (PCSH) were used. Data on places that people visited during the lockdown were extracted and compared with the sociodemographic characteristics of the respondents. Descriptive statistics were calculated for all independent variables and focused on frequencies and percentages. Chi-squared test was used to determine the significance between sociodemographic variables and places visited during the lockdown. Statistical significance was determined by P<0.05. All statistical analyses were carried out using SPSS version 22. Results. There were 1304 and 879 participants in the PERC wave-1 and PCSH datasets, respectively. The mean age of PERC wave-1 and PCSH survey respondents was 31.8 [standard deviation (SD)=8.5] and 33.1 (SD=8.3) years, respectively. In the PCSH survey, 55.9% and 44.1% of respondents lived in locations with partial and complete covid-19 lockdowns, respectively. Irrespective of the type of lockdown, the most common place visited during the lockdown was the market (shopping); reported by 73% of respondents in states with partial lockdown and by 68% of respondents in states with the complete lockdown. Visits to families and friends happened more in states with complete (16.1%) than in states with partial (8.4%) lockdowns. Conclusions. Markets (shopping) were the main places visited during the lockdown compared to visiting friends/family, places of worship, gyms, and workplaces. It is important in the future for the Government to plan how citizens can safely access markets and get other household items during lockdowns for better adherence to stay-at-home directives for future infectious disease epidemics. [ABSTRACT FROM AUTHOR]

Cyclotriphosphazenes, a variety of inorganic rings together with a curing ingredient, 4,4′-methylene dianiline (MDA), are mainly used to enhance the thermal conductivity and mechanical characteristics of epoxy resin (DGEBA). Three DGEBA@MDA, HGCP@MDA, and thermosets were produced, and their curing behaviors were investigated. Using a molecular dynamics (MD) approach, the impact of cyclotriphosphazene on the characteristics of DGEBA composites is thoroughly explored in this paper. Results indicated that the glass transition temperatures (Tg) of DGEBA containing HGCP had slightly decreased compared to DGEBA. With the addition of HGCP to DGEBA, epoxy resin (DGEBA@HGCP@MDA) has a high thermal conductivity of 0.215284 W/m·K, with an increase of 116.04% more than pure DGEBA (0.185524 W/m·K). Moreover, the DGEBA@HGCP@MDA composite has high mechanical strength with a specific Young's modulus of 5.4902 GPa. In order to forecast and analyze certain performances directly associated with the microstructure characteristics of the various cross-linked resin systems and their composite materials, an MD simulation approach will be quite valuable. [ABSTRACT FROM AUTHOR]

In this modest work, a local biopolymer (CHA), biodegradable, non-toxic, and soluble in acidic media, was extracted from the plant Artemisia herba-alba located in the eastern region of Morocco, and characterized by FT-IR, in order to valorize it as a corrosion inhibitor of mild steel in 1 M HCl medium. The electrochemical tests show that the extract is an excellent corrosion protective agent, reaching a maximum value of 96.17% at the concentration of 800 mg/L in the inhibitor. The potentiodynamic polarization (PDP) curves indicate the mixed behavior of the extract, to reduce the current density from 3.445 mA/cm2 to 0.104 mA/cm2 in the presence of 800 mg/L in the inhibitor. The biopolymer CHA of the extract of Artemisia herba-alba undergoes the Langmuir adsorption isotherm, whose adsorption energy is −20.75 kJ/mol, which is attributed to the presence of electrostatic and covalent bonds. In addition, the visualization of the metal surface by a scanning electron microscope (SEM) indicates the formation of a protective layer formed by the extracts of Artemisia herba-alba, which confirms the protective characteristic of the extract used. Theoretical investigations by DFT, MD, and MC confirm previous experimental results. [ABSTRACT FROM AUTHOR]

Recent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is crucial for effective interfacial interactions. In this study, a coconut-based non-ionic surfactant, namely, coco monoethanolamide (CMEA), was investigated for corrosion inhibition behaviour against mild steel (MS) in 1 M HCl employing the experimental and computational techniques. The surface morphology was studied employing the scanning electron microscope (SEM), atomic force microscope (AFM), and contact measurements. The critical micelle concentration (CMC) was evaluated to be 0.556 mM and the surface tension corresponding to the CMC was 65.28 mN/m. CMEA manifests the best inhibition efficiency (η%) of 99.01% at 0.6163 mM (at 60 °C). CMEA performs as a mixed-type inhibitor and its adsorption at the MS/1 M HCl interface followed the Langmuir isotherm. The theoretical findings from density functional theory (DFT), Monte Carlo (MC), and molecular dynamics (MD) simulations accorded with the experimental findings. The MC simulation's assessment of CMEA's high adsorption energy (−185 Kcal/mol) proved that the CMEA efficiently and spontaneously adsorbs at the interface. [ABSTRACT FROM AUTHOR]

Probiotics and related preparations, including synbiotics and postbiotics, are living and non-living microbial-based multi-components, which are now among the most popular bioactive agents. Such interests mainly arise from the wide range and numerous beneficial effects of their use for various hosts. The current minireview article attempts to provide an overview and discuss in a holistic way the concepts, methodologies, action mechanisms, and applications of probiotic-based multi-components in human, animal, plant, soil, and environment health. Probiotic-based multi-component preparations refer to a mixture of bioactive agents, containing probiotics or postbiotics as main functional ingredients, and prebiotics, protectants, stabilizers, encapsulating agents, and other compounds as additional constituents. Analyzing, characterizing, and monitoring over time the traceability, performance, and stability of such multi-component ingredients require relevant and sensitive analytical tools and methodologies. Two innovative profiling and monitoring methods, the thermophysical fingerprinting thermogravimetry–differential scanning calorimetry technique (TGA-DSC) of the whole multi-component powder preparations, and the Advanced Testing for Genetic Composition (ATGC) strain analysis up to the subspecies level, are presented, illustrated, and discussed in this review to respond to those requirements. Finally, the paper deals with some selected applications of probiotic-based multi-components to human, animal, plant, soil and environment health, while mentioning their possible action mechanisms. [ABSTRACT FROM AUTHOR]

Current strategies for increasing food production rely heavily on the use of agrichemicals to improve plant growth and resistance to disease. However, many of these chemicals have been shown to have negative impacts on human health and the environment. Nanotechnology presents itself as one of the promising technologies that can be employed to overcome these challenges, but, in the same way that agrichemicals can be harmful, so too can nanotechnology production lines cause harm. In an effort to produce nanoparticles (NPs) in an environmentally friendly and sustainable manner, biological synthesis pathways using microbes and plants are being explored and developed. Synthesis of NPs using endophytic microbiomes is one of the biological approaches showing great potential, offering environmentally friendly alternatives to current production lines and adding value to agricultural systems. This review presents the current potential of NPs synthesized using endophytic microbiomes (primarily bacteria and fungi) to enhance plant growth and improve disease resistance, ultimately making agriculture more sustainable. The future focus on the exploration of this important technique is advocated. [ABSTRACT FROM AUTHOR]

Pyrimidine compounds have proven to be effective and efficient additives capable of protecting mild steel in acidic media. This class of organic compounds often functions as adsorption-type inhibitors of corrosion by forming a protective layer on the metallic substrate. The present study reports a computational study of forty pyrimidine compounds that have been investigated as sustainable inhibitors of mild steel corrosion in molar HCl solution. Quantitative structure property relationship was conducted using linear (multiple linear regression) and nonlinear (artificial neural network) models. Standardization method was employed in variable selection yielding five top chemical descriptors utilized for model development along with the inhibitor concentration. Multiple linear regression model yielded a fair predictive model. Artificial neural network model developed using k-fold cross-validation method provided a comprehensive insight into the corrosion protection mechanism of studied pyrimidine-based corrosion inhibitors. Using a multilayer perceptron with Levenberg–Marquardt algorithm, the study obtained the optimal model having a MSE of 8.479, RMSE of 2.912, MAD of 1.791, and MAPE of 2.648. The optimal neural network model was further utilized to forecast the protection capacities of nine non-synthesized pyrimidine derivatives. The predicted inhibition efficiencies ranged from 89 to 98%, revealing the significance of the considered chemical descriptors, the predictive capacity of the developed model, and the potency of the theoretical inhibitors. [ABSTRACT FROM AUTHOR]

June 24th, 2022, a day that will be etched in today and future generations' textbooks as a historic day, the United States of America revoked the constitutional right to seek safe abortion care. Overturning Roe v Wade allowed the divided individual states to independently decide the legal parameters regarding abortion care. A decision that disproportionately effects the reproductive lives of women residing on the land of America. Given the systemic impacts of racism, neoliberalism and white supremacy, it is the Black, racialized and poor women who suffer terrible repercussions. In this commentary the authors begin by discussing the historical biopolitical perspective, colonial systems and longstanding impacts on racialized women's bodies in America. The discussion transitions to the implications of geopolitics at play nationally and cascading impacts globally, focusing on humanitarian and emergency settings. Using a medical humanities perspective, authors highlight the collision between politics and reproductive health policy and its implications on social determinants of health, such as women's education, employment, housing, racial and gender equity and wellbeing. Long standing advocates, community leaders and healers, leading scientists, birth attendants, doctors, nurses, allied health professionals/providers and humanitarian workers – and many others - are reminded and live the weight of the continuous battle of population control, stemming from the oppressive history of control and exploitation. [ABSTRACT FROM AUTHOR]

Generally, MoS2 is easily oxidized when exposed to oxygen, and the antioxidation mechanism of MoS2 is still a challenge. Thus, more efforts were made to greatly improve its antioxidation performance. It was reported that the Ti atom doped with MoS2 was treated as the effective method to enhance its antioxidation performance; however, the detailed antioxidation mechanism was not well understood. Superior to experimental methods, the first-principles method could provide deep insight into the atomic information and serve as a useful tool to gain an understanding of the antioxidation mechanisms of the doped MoS2; thus, the antioxidation behavior of the Ti-doped MoS2 was investigated in detail using first-principles calculations. However, an opposing conclusion was obtained from the calculated results compared to the previous experimental results; that is, the incorporation of the Ti atom was not helpful for improving the antioxidation performance of MoS2. The strange phenomenon was well probed and discussed in detail, and understanding the oxidation mechanism of the Ti-doped MoS2 would be helpful for expanding its applications in the ambient atmosphere. [ABSTRACT FROM AUTHOR]

The continuous search for eco-friendly corrosion inhibitors due to differences in corrosive media remains an important point in corrosion control. The experimental studies on the corrosion inhibition of urea on mild steel in automotive gas oil (AGO) was conducted using gasometric techniques and scanning electron microscope (SEM). The theoretical approach on the density functional theory (DFT) on the urea molecule was carried out using Gaussian 09 software. The adsorption behavior of urea molecules on the surface of the mild steel was analyzed using Frumkin and Flory-Huggins adsorption isotherms models and Gibb's free energy, respectively. The result of the experimental study shows a poor corrosion inhibitory effect of urea on mild steel in automobile gas oil (AGO) medium as the inhibition efficiency decreased from 69.30% in week 1 to 12% in week 11 at 200 ppm of inhibitor. The adsorption of urea on the mild steel surface obeys Frumkin's adsorption isotherm model. Gibb's free energy of adsorption of urea molecules onto mild steel surface revealed a physisorption mechanism. SEM results showed the non-inhibitive nature of urea on the studied mild steel. Quantum chemical parameters such as HOMO, LUMO, electron affinity, electronegativity, and the fraction of electrons transferred to the metal surface were calculated and interpreted to compare the experimental and theoretical results. The theoretical findings in the current investigation were not in agreement with the experimental result, thereby creating a need for further study using the electrochemical method. [ABSTRACT FROM AUTHOR]

Background: Community health workers play an important role in linking communities with formal health service providers, thereby improving access to and utilization of health care. A novel cadre of community health workers known as village health workers (VHWs) were recruited to create demand for maternal health services in the Nigerian Subsidy Reinvestment Programme (SURE-P/MCH). In this study, we investigated the role of contextual factors and underlying mechanisms motivating VHWs. Methods: We used realist evaluation to understand the impact of a multi-intervention maternal and child health programme on VHW motivation using Anambra State as a case study. Initial working theories and logic maps were developed through literature review and stakeholder engagement; programme theories were developed and tested using focus group discussions and in-depth interviews with various stakeholder groups. Interview transcripts were analysed through an integrated approach of Context, Mechanism and Outcomes (CMO) categorisation and connecting, and matching of patterns of CMO configurations. Motivation theories were used to explain factors that influence VHW motivation. Explanatory configurations are reported in line with RAMESES reporting standards. Results: The performance of VHWs in the SURE-P maternal and child health programme was linked to four main mechanisms of motivation: feelings of confidence, sense of identity or feeling of acceptance, feeling of happiness and hopefulness/expectation of valued outcome. These mechanisms were triggered by interactions of programme-specific contexts and resources such as training and supervision of VHWs by skilled health workers, provision of first aid kits and uniforms, and payments of a monthly stipend. The monthly payment was considered to be the most important motivational factor by VHWs. VHWs used a combination of innovative approaches to create demand for maternity services among pregnant women, and their performance was influenced by health system factors such as organisational capacity and culture, and societal factors such as relationship with the community and community support. Conclusion: This paper highlights important contextual factors and mechanisms for VHW motivation that can be applied to other interventions that seek to strengthen community engagement and demand creation in primary health care. Future research on how to sustain VHW motivation is also required. [ABSTRACT FROM AUTHOR]

Epoxy resins exhibit various excellent properties such as high adhesion, outstanding mechanical properties, high electrical insulation, and chemical resistance. The article briefly reviews the literature on some epoxy resins based on bisphenolics, aromatic diamines, glucose, and bio-based derivatives as prepolymers and/or polymers, their synthesis, crosslinking process, and viscosities behavior. The article covers mainly epoxy resins with industrial applications. The viscosities of epoxy resins solutions as prepolymers and/or polymers samples in different solvents were highlighted. The effect of prepolymers and/or polymers samples concentration, temperature, time, and shear rate on viscosity was discussed. [ABSTRACT FROM AUTHOR]

Background The COVID-19 pandemic has caused disruptions to the functioning of societies and their health systems. Prior to the pandemic, health systems in low- and middle-income countries (LMIC) were particularly stretched and vulnerable. The International Society of Global Health (ISoGH) sought to systematically identify priorities for health research that would have the potential to reduce the impact of the COVID-19 pandemic in LMICs. Methods The Child Health and Nutrition Research Initiative (CHNRI) method was used to identify COVID-19-related research priorities. All ISoGH members were invited to participate. Seventy-nine experts in clinical, translational, and population research contributed 192 research questions for consideration. Fifty-two experts then scored those questions based on five pre-defined criteria that were selected for this exercise: 1) feasibility and answerability; 2) potential for burden reduction; 3) potential for a paradigm shift; 4) potential for translation and implementation; and 5) impact on equity. Results Among the top 10 research priorities, research questions related to vaccination were prominent: health care system access barriers to equitable uptake of COVID-19 vaccination (ranked 1st), determinants of vaccine hesitancy (4th), development and evaluation of effective interventions to decrease vaccine hesitancy (5th), and vaccination impacts on vulnerable population/s (6th). Health care delivery questions also ranked highly, including: effective strategies to manage COVID-19 globally and in LMICs (2nd) and integrating health care for COVID-19 with other essential health services in LMICs (3rd). Additionally, the assessment of COVID-19 patients' needs in rural areas of LMICs was ranked 7th, and studying the leading socioeconomic determinants and consequences of the COVID-19 pandemic in LMICs using multi-faceted approaches was ranked 8th. The remaining questions in the top 10 were: clarifying paediatric case-fatality rates (CFR) in LMICs and identifying effective strategies for community engagement against COVID-19 in different LMIC contexts. Interpretation Health policy and systems research to inform COVID-19 vaccine uptake and equitable access to care are urgently needed, especially for rural, vulnerable, and/or marginalised populations. This research should occur in parallel with studies that will identify approaches to minimise vaccine hesitancy and effectively integrate care for COVID-19 with other essential health services in LMICs. ISoGH calls on the funders of health research in LMICs to consider the urgency and priority of this research during the COVID-19 pandemic and support studies that could make a positive difference for the populations of LMICs. [ABSTRACT FROM AUTHOR]

Nano‐sized carbon allotropes, particularly graphene (G), graphene oxide (GO), single and multi‐walled carbon nanotubes (CNTs, SWCNTs, and MWCNTs) and their chemically modified derivatives are widely used in anticorrosive coating formulations. Generally, carbon allotropes acquire nanofiller property and high hydrophobicity which make them ideal anticorrosive materials. Along with various advantages, using carbon allotropes as anticorrosive materials are connected with some specific challenges including un‐controlled dispersion in polymer matrixes. Chemical functionalization using covalent and non‐covalent methods are widely used to enhance their dispersibility. Magnetic stirring, ultrasonic mixing, ball milling and shear emulsification are also widely used to enhance their dispersibility. Present review article describes the covalent and non‐covalent functionalization of G, GO, and CNTs and their application as corrosion inhibitors in various coating formulations and aqueous phase. Chemically modified GO shows remarkable solubility/dispersibility in the aqueous electrolytes. Advantages and challenges using these materials as corrosion inhibitors have also been discussed herein [ABSTRACT FROM AUTHOR]

The first coronavirus disease 2019 (COVID-19) interim guidance released by the World Health Organization recommended suspension of non-urgent community health interventions, including mass drug administration (MDA) for neglected tropical diseases. However, with no end in sight for the COVID-19 pandemic, it was crucial to find ways to restart MDA while testing measures to reduce the risk of COVID-19 transmission between health workers, volunteers and communities. Consequently, guidelines were developed for delivering MDA safely in a COVID-19 context and the training and implementation were assessed through an observation checklist. The study also gathered data on the feasibility of using the MDA platform to disseminate COVID-19 health education. The results suggest that delivering MDA safely in a COVID-19 context is possible but revealed significant challenges in using the MDA platform for COVID-19 education. [ABSTRACT FROM AUTHOR]

In this study, silica surface has been coated using pyrrolidinomethylcalix[4]arene through the chemical modification of silanol groups. The pyrrolidinomethylcalix[4]arene-coated silica (PCS) adsorbent was characterized using the Fourier transform infrared and scanning electron microscopic technique. The adsorptive removal efficiency of PCS adsorbent was checked through batch studies with various effective parameters such adsorbent dose, pH, and temperature. During experiments, it has been observed that maximum adsorption was achieved in acidic to neutral pH and 25 mg.L−1 of PCS dose, while the kinetic models demonstrates that the pseudo 2nd order equation was the best fit (R2 0.99). The thermodynamic experiments described that the reaction is exothermic and spontaneous. Furthermore, equilibrium models were applied on experimental data and it has been noticed that the equilibrium data was best-fitted with Langmuir isotherm model (R2 0.99). The DFT analysis of dye molecule is helpful to examine the chemical interaction sites of absorbent and adsorbent using B3LYP/LANL2DZ/6-311++G (d,p) level using G09W software. [ABSTRACT FROM AUTHOR]

Molecular modelling of organic compounds using computational software has emerged as a powerful approach for theoretical determination of the corrosion inhibition potential of organic compounds. Some of the common techniques involved in the theoretical studies of corrosion inhibition potential and mechanisms include density functional theory (DFT), molecular dynamics (MD) and Monte Carlo (MC) simulations, and artificial neural network (ANN) and quantitative structure–activity relationship (QSAR) modeling. Using computational modelling, the chemical reactivity and corrosion inhibition activities of organic compounds can be explained. The modelling can be regarded as a time-saving and eco-friendly approach for screening organic compounds for corrosion inhibition potential before their wet laboratory synthesis would be carried out. Another advantage of computational modelling is that molecular sites responsible for interactions with metallic surfaces (active sites or adsorption sites) and the orientation of organic compounds can be easily predicted. Using different theoretical descriptors/parameters, the inhibition effectiveness and nature of the metal–inhibitor interactions can also be predicted. The present review article is a collection of major advancements in the field of computational modelling for the design and testing of the corrosion inhibition effectiveness of organic corrosion inhibitors. [ABSTRACT FROM AUTHOR]

In the present review article current developments on hexachlorocyclotriphosphazene (HCCP) based epoxy resins as reactive flame retardants is surveyed. The cyclotriphosphazene in its monomeric and polymeric forms behave as flame retardants due to the presence of phosphorus (P) and nitrogen (N) atoms. Usually hexachorocyclotriphosphazene based epoxy resins show reasonably low thermal and fire retardant properties therefore some external additives are being added to improved their thermal and fire retardant properties. Present review article describes the collection of previous works published on the flame retardant properties of hexachlorocyclotriphosphazene based epoxy resins. Present article also deals with the surface modification, functionalization and description of various hexachlorocyclotriphosphazene based epoxy resins as thermal and flame retardants. [ABSTRACT FROM AUTHOR]

Objectives: To review and synthesize the existing evidence on bereavement care, within the United Kingdom (UK), for ethnic minority communities in terms of barriers and facilitators to access; models of care; outcomes from, and satisfaction with, service provision. Design: A systematic review adopting a framework synthesis approach was conducted. An electronic search of the literature was undertaken in MEDLINE, Embase, PsycINFO, Social Work Abstract and CINAHL via EBSCO, Global Health, Cochrane library, the Trip database and ProQuest between 1995 and 2020. Search terms included bereavement care, ethnic minority populations and the UK setting. Results: From 3,185 initial records, following screening for eligibility, and full-text review of 164 articles, seven studies were identified. There was no research literature outlining the role of family, friends and existing networks; and a real absence of evidence about outcomes and levels of satisfaction for those from an ethnic minority background who receive bereavement care. From the limited literature, the overarching theme for barriers to bereavement care was 'unfamiliarity and irregularities'. Four identified subthemes were 'lack of awareness'; 'variability in support'; 'type and format of support'; and 'culturally specific beliefs'. The overarching theme for facilitators for bereavement care was 'accessibility' with the two subthemes being 'readily available information' and 'inclusive approaches'. Three studies reported on examples of different models of care provision. Conclusions: This review reveals a stark lack of evidence about bereavement care for ethnic minority populations. In particular, understanding more about the role of family, friends and existing support systems, alongside outcomes and satisfaction will begin to develop the evidence base underpinning current provision. Direct user-representation through proactive engagement and co-design approaches may begin to determine the most appropriate models and format of bereavement care for ethnic minority communities to inform service design and delivery. [ABSTRACT FROM AUTHOR]

Background: Despite regional efforts to address concerns regarding the burden of advanced cancer in Africa, urgent attention is still required. Widespread issues include late symptom presentation, inaccessibility of palliative care services, limited resources, poor data quality, disparity in data availability, and lack of stakeholder engagement. One way of helping to address these issues is by understanding and meeting the data and information needs of policymakers in palliative cancer care.Aims: To explore the views of policymakers regarding data availability, data gaps and preferred data formats to support policy and decision making for palliative cancer care in Nigeria, Uganda and Zimbabwe.Methods: A secondary analysis of interview data collected as part of a cross-sectional qualitative study that aimed to explore the data and information needs of patients, policymakers and caregivers in Nigeria, Uganda and Zimbabwe. Framework analysis, guided by the MEASURE evaluation framework, was used to qualitatively analyse the data.Results: Twenty-six policymakers were recruited. The policymakers data and information concerns are aligned to the MEASURE evaluation framework of data and information use and include; assessing and improving data use (e.g. low prioritisation of cancer); identifying and engaging the data user (e.g. data processes); improving data quality (e.g. manual data collection processes); improving data availability (e.g. the accessibility of data); identifying information needs (e.g. what is 'need to know'?); capacity building in core competencies (e.g. skills gaps); strengthening organisational data demand and use (e.g. policy frameworks); monitoring, evaluating and communicating of data demand and use (e.g. trustworthiness of data).Conclusions: We present evidence of data sources, challenges to their access and use, guidance on data needs for policymakers, and opportunities for better engagement between data producers, brokers and users. This framework of evidence should inform the development of strategies to improve data access and use for policy and decision making to improve palliative cancer services in participating countries with relevance to the wider region. [ABSTRACT FROM AUTHOR]

The poem "Liberté," by Natasha Amartey and Bassey Ebenso is presented. First Line: Committee for the Promotion of Virtue; Last Line: Equal, autonomous and free.

Purpose: The importance of social exclusion and the disadvantage experienced by many minority ethnic and religious populations are rooted in SDG 10. To address this exclusion effectively it is important to understand their key drivers. This paper aimed to establish the key drivers of exclusion and their outcomes in Nigeria. Design/methodology/approach: The methods involved a scoping review of literature and stakeholder workshops that focused on drivers of social exclusion of religious and ethnic minorities in public institutions. Findings: At the macro level, the drivers include ineffective centralized federal State, competition for resources and power among groups, geographic developmental divide and socio-cultural/religious issues. At the meso-level are institutional rules and competition for resources, stereotypes and misconceptions, barriers to access and service provision. At the micro-level are socio-economic status and health-seeking behaviour. The perceived impact of social exclusion included increasing illiteracy, lack of employment, deteriorating health care services, increased social vices, communal clashes and insurgencies and vulnerability to exploitation and humiliation. These drivers must be taken into consideration in the development of interventions for preventing or reducing social exclusion of ethnic and religious minorities from public services. Originality/value: This is a case of co-production by all the stakeholders and a novel way for the identification of drivers of social exclusion in public services in Nigeria. It is the first step towards solving the problem of exclusion and has implications for the achievement of SDG 10 in Nigeria. [ABSTRACT FROM AUTHOR]