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You searched for: Journal name Heliyon Remove constraint Journal name: Heliyon Publication year rev 7979-2021 Remove constraint Publication year rev: 7979-2021 Source 2021 v.7 no.3 Remove constraint Source: 2021 v.7 no.3
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1. Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method

Author:
P.W. Anggoro; B. Bawono; J. Jamari; M. Tauviqirrahman; A.P. Bayuseno
Source:
Heliyon 2021 v.7 no.3 pp. e06481
ISSN:
2405-8440
Subject:
Taguchi method; diabetes; ethylene-vinyl acetate; foams; hardness; hybrids; mathematical models; signal-to-noise ratio; surface roughness
Abstract:
... Herein, a machining strategy to fabricate custom orthotic insoles with high surface finish and wide fit tolerance is presented. CNC milling was used to machine ethylene-vinyl acetate (EVA) foam for insoles with various surface hardness, and the Taguchi-response surface method (TM-RSM) was adopted to optimize the parameters of the CNC milling process (cutting speed, feed rate, tool path strategy, a ...
DOI:
10.1016/j.heliyon.2021.e06481

2. Alkali activation of compacted termite mound soil for eco-friendly construction materials

Author:
Assia Aboubakar Mahamat; Ifeyinwa Ijeoma Obianyo; Blasuis Ngayakamo; Numfor Linda Bih; Olugbenga Ayeni; Salifu T. Azeko; Holmer Savastano
Source:
Heliyon 2021 v.7 no.3 pp. e06597
ISSN:
2405-8440
Subject:
Fourier transform infrared spectroscopy; Isoptera; X-radiation; X-ray diffraction; aluminum silicates; compression strength; crystal structure; dimensional stability; energy; mechanical properties; microstructure; soil; temperature; termite mounds
Abstract:
... This investigation prospects the feasibility of optimizing the mechanical behavior and dimensional stability of termite's mound soil through alkaline activation. The raw aluminosilicate (termites' soil) was used without any pre-thermal treatment and natural occurring potash was used as the alkaline activator. Different activation level and different initial curing temperature were adopted to exami ...
DOI:
10.1016/j.heliyon.2021.e06597

3. Altered serum elements, antioxidants, MDA, and immunoglobulins are associated with an increased risk of seborrheic dermatitis

Author:
Ishrat Jahan; Md. Rabiul Islam; Md. Reazul Islam; Rubaiya Ali; S.M. Matiur Rahman; Zabun Nahar; Abul Hasnat; Md. Saiful Islam
Source:
Heliyon 2021 v.7 no.3 pp. e06621
ISSN:
2405-8440
Subject:
absorption; blood serum; calcium; case-control studies; copper; dermatitis; fungi; immunoglobulin A; iron; magnesium; malondialdehyde; manganese; nutrition; pathophysiology; risk; spectroscopy; vitamin E; zinc
Abstract:
... The exact mechanism for the pathophysiology of seborrheic dermatitis (SD) remains unknown. According to past knowledge, neuropsychiatric disorders, weak immune responses, fungal infections, antioxidants deficiencies, and inadequate nutrition might involve in SD. Here we evaluated serum trace elements, micronutrients, antioxidants, malondialdehyde (MDA), and immunoglobulins in SD patients.This case ...
DOI:
10.1016/j.heliyon.2021.e06621

4. Anxiety among the Sudanese university students during the initial stage of COVID-19 pandemic

Author:
Isra Mohamed Yassin Abas; Isra Isam Eldeen Mohammed Alejail; Suad Mohamed Ali
Source:
Heliyon 2021 v.7 no.3 pp. e06300
ISSN:
2405-8440
Subject:
COVID-19 infection; anxiety; economic outlook and situation; fever; headache; inventories; mouth; pharyngitis; questionnaires; Sudan
Abstract:
... Since the emergence of the novel coronavirus disease 19 (COVID-19), many people were facing daily life changes that could predispose them to anxiety. For the Sudanese university students, the situation is even more complicated because of the limited availability of online learning and the difficult economic situation of the country. The objective of this study is to assess the students' anxiety le ...
DOI:
10.1016/j.heliyon.2021.e06300

5. Application of artificial neural network modeling techniques to signal strength computation

Author:
K.C. Igwe; O.D. Oyedum; A.M. Aibinu; M.O. Ajewole; A.S. Moses
Source:
Heliyon 2021 v.7 no.3 pp. e06047
ISSN:
2405-8440
Subject:
algorithms; data collection; neural networks; signal strength; variance
Abstract:
... This paper presents development of artificial neural network (ANN) models to compute received signal strength (RSS) for four VHF (very high frequency) broadcast stations using measured atmospheric parameters. The network was trained using Levenberg-Marquardt back-propagation (LMBP) algorithm. Evaluation of different effects of activation functions at the hidden and output layers, variation of numb ...
DOI:
10.1016/j.heliyon.2021.e06047

6. Application of soft-computing techniques for statistical modeling and optimization of Dyacrodes edulis seed oil extraction using polar and non-polar solvents

Author:
C. Esonye; O.D. Onukwuli; V.C. Anadebe; J.N.O. Ezeugo; N.J. Ogbodo
Source:
Heliyon 2021 v.7 no.3 pp. e06342
ISSN:
2405-8440
Subject:
algorithms; chloroform; ethanol; experimental design; fatty acids; hexane; methanol; neural networks; particle size; response surface methodology; seed oils; solutes; solvents
Abstract:
... This research presents optimal factor evaluation for maximum Dyacrodes edulis seed oil (DESO) extraction by applying central composite design (CCD) based on Box-Behnken (BB) experimental design of response surface methodology (RSM) and Artificial neural network (ANN) on feed forward-back propagation (FFBP) of Levenberg Marquardt (LM) training algorithm. Polar solvents (ethanol and combination of m ...
DOI:
10.1016/j.heliyon.2021.e06342

7. Assessment of global warming in Al Buraimi, sultanate of Oman based on statistical analysis of NASA POWER data over 39 years, and testing the reliability of NASA POWER against meteorological measurements

Author:
Osama A. Marzouk
Source:
Heliyon 2021 v.7 no.3 pp. e06625
ISSN:
2405-8440
Subject:
air temperature; atmospheric precipitation; atmospheric pressure; databases; energy; prediction; regression analysis; relative humidity; standard deviation; t-test; Oman
Abstract:
... We performed a number of statistical analysis methods on the historical data for the air temperature at 2 m above the ground and its range, as reported by the database of NASA known as POWER, which stands for Prediction Of Worldwide Energy Resources. The point of analysis is the University of Buraimi, located in Al Buraimi Governate, in the Northwest of the Sultanate of Oman, near its border with ...
DOI:
10.1016/j.heliyon.2021.e06625

8. Association between carriers of the G allele of the + 45T> G variant of the ADIPOQ gene (rs 2241766) and the cardiometabolic profile in sickle cell trait

Author:
Jamila Benvegnú Bruno; Emanuelle Schneider Dal Ponte; Vanessa Retamoso; Patrícia Maurer; Lyana Feijoó Berro; Vanusa Manfredini; Jacqueline da Costa Escobar Piccoli
Source:
Heliyon 2021 v.7 no.3 pp. e06443
ISSN:
2405-8440
Subject:
adiponectin; alleles; blood serum; ethics; genetic models; genotyping; high density lipoprotein cholesterol; metabolic syndrome; questionnaires; risk; sickle cell anemia; Brazil
Abstract:
... investigate the association between the +45T > G variant of the ADIPOQ gene and the metabolic syndrome (MS) in patients with sickle cell trait (SCT). 33 patients with SCT and 35 control group participated in the study. Lower levels of HDL and adiponectin were observed in patients with G allele and sickle cell trait. There were no differences between the prevalence of MS between the groups and ther ...
DOI:
10.1016/j.heliyon.2021.e06443

9. Basotho ontology of disability: An afrocentric onto-epistemology

Author:
Maximus Monaheng Sefotho
Source:
Heliyon 2021 v.7 no.3 pp. e06540
ISSN:
2405-8440
Subject:
children; focus groups; humans; youth
Abstract:
... This theoretical article offers a diachronic analysis that is a rebuttal of ontological hegemony of disability as negative. The article is premised on the Ubuntu paradigm from which African wisdom is mostly anchored in idioms and proverbs. This article emerges as a reflection on a Sesotho proverb: Sehole ho ‘Ma-sona ha se lahloe (A child with a disability is never abandoned by the mother). The aim ...
DOI:
10.1016/j.heliyon.2021.e06540

10. Biochemical and antioxidant properties of cream and orange-fleshed sweet potato

Author:
Rebecca Olajumoke Oloniyo; Olufunmilayo Sade Omoba; Olugbenga Olufemi Awolu
Source:
Heliyon 2021 v.7 no.3 pp. e06533
ISSN:
2405-8440
Subject:
antinutritional factors; antioxidants; ash content; beta-carotene; carbohydrate content; cream; flour; food security; magnesium; nutrient deficiencies; potassium; sweet potatoes; Nigeria
Abstract:
... The rate of micronutrient deficiency has been on an increase since the last decade and the utilization of bio-fortified crops could help to alleviate this deficiency and food insecurity in Africa especially in Nigeria. The aim of this study was to compare the biochemical and antioxidant properties of cream-fleshed and orange-fleshed sweet potato. The varieties of OFSP used in this study were mothe ...
DOI:
10.1016/j.heliyon.2021.e06533

11. Biogenic synthesis and cytotoxic effects of silver nanoparticles mediated by white rot fungi

Author:
Gudikandula Krishna; V. Srileka; M.A. Singara Charya; Esraa Samy Abu Serea; Ahmed Esmail Shalan
Source:
Heliyon 2021 v.7 no.3 pp. e06470
ISSN:
2405-8440
Subject:
Ganoderma; Trametes; ambient temperature; breast neoplasms; culture filtrates; cytotoxicity; humans; laboratory experimentation; lung neoplasms; nanosilver; neoplasm cells; silver nitrate; viability
Abstract:
... Silver nanoparticles (AgNPs) were successfully synthesized using silver nitrate via the biological route using the culture filtrate of Ganoderma enigmaticum as well as Trametes ljubarskyi white rot fungi materials at room temperature. The proposed synthetic technique was applied for the first time for AgNPs preparation via the biological route through a low-cost pathway, which considered as an ade ...
DOI:
10.1016/j.heliyon.2021.e06470

12. Bioremediation and pharmacological applications of gold nanoparticles synthesized from plant materials

Author:
Sunday Adewale Akintelu; Bo Yao; Aderonke Similoluwa Folorunso
Source:
Heliyon 2021 v.7 no.3 pp. e06591
ISSN:
2405-8440
Subject:
bioremediation; biosynthesis; gold; nanogold; pH; plant extracts; temperature
Abstract:
... Nanotechnology and nanoscience are gaining remarkable attention in this era due to their distinctive properties and multi applications. Gold nanoparticles (AuNPs) is one of the most relevant metal nanoparticles with enormous applications in various field of research and industries. The demand for AuNPs is increasing rapidly. Extensive awareness has been allotted to the development of novel approac ...
DOI:
10.1016/j.heliyon.2021.e06591

13. Body weight and its influence on hepcidin levels in patients with type 2 diabetes: A systematic review and meta-analysis of clinical studies

Author:
Fransina Ndevahoma; Munyaradzi Mukesi; Phiwayinkosi V. Dludla; Bongani B. Nkambule; Elina P. Nepolo; Tawanda M. Nyambuya
Source:
Heliyon 2021 v.7 no.3 pp. e06429
ISSN:
2405-8440
Subject:
anemia; confidence interval; epidemiology; hemoglobin; hepcidin; meta-analysis; noninsulin-dependent diabetes mellitus; obesity; regulatory proteins; systematic review
Abstract:
... Iron profiles in patients with type 2 diabetes (T2D) are inconsistent. In this study, we assessed the levels of hepcidin, a regulatory protein involved in iron homoeostasis, in patients with T2D. We further evaluated the surrogate markers of hepcidin action, particularly those associated with erythropoiesis.This systematic review and meta-analysis was reported following the Meta-analysis Of Observ ...
DOI:
10.1016/j.heliyon.2021.e06429

14. Brain-to-brain communication: the possible role of brain electromagnetic fields (As a Potential Hypothesis)

Author:
Ehsan Hosseini
Source:
Heliyon 2021 v.7 no.3 pp. e06363
ISSN:
2405-8440
Subject:
brain; cortex; cryptochromes; magnetic fields; retina
Abstract:
... Up now, the communication between brains of different humans or animals has been confirmed and confined by the sensory medium and motor facilities of body. Recently, direct brain-to-brain communication (DBBC) outside the conventional five senses has been verified between animals and humans. Nevertheless, no empirical studies or serious discussion have been performed to elucidate the mechanism behi ...
DOI:
10.1016/j.heliyon.2021.e06363

15. Breaking out: the turning point in learning using mobile technology

Author:
Julia Bello-Bravo; Ian Brooks; Anne Namatsi Lutomia; Jeremy Bohonos; John Medendorp; Barry Pittendrigh
Source:
Heliyon 2021 v.7 no.3 pp. e06595
ISSN:
2405-8440
Subject:
area; computers; crossing; data analysis; electronic learning; mobile telephones; public services and goods; sampling
Abstract:
... Despite considerable research on YouTube as a digital media platform, little research to date has quantified the device-type used to access that online media. Analyzing access-device data for videos on one YouTube video channel—Scientific Animations Without Borders (SAWBO), which produces educational content specifically accessible to low- or non-literate, poor, or geographically isolated learners ...
DOI:
10.1016/j.heliyon.2021.e06595

16. Can a monologue-style ECA more effectively motivate eHealth users in initial distress than textual guidance?

Author:
Mark R. Scholten; Saskia M. Kelders; Julia E.W.C. Van Gemert-Pijnen
Source:
Heliyon 2021 v.7 no.3 pp. e06509
ISSN:
2405-8440
Subject:
distress; gender; motivation; telemedicine
Abstract:
... Stress is a prevalent issue amongst patients with chronic conditions. As eHealth interventions are gaining importance, it becomes more relevant to invoke the possibilities from the eHealth technology itself to provide motivational acts during experiences of stress as to enhance adherence to the intervention. Embodied Conversational Agents (ECA's) also known as ‘robots on screen’ can potentially pr ...
DOI:
10.1016/j.heliyon.2021.e06509

17. Causes, indicators and impacts of climate change: understanding the public discourse in Goat based agro-pastoral livelihood zone, Ethiopia

Author:
Ademe Mihiretu; Eric Ndemo Okoyo; Tesfaye Lemma
Source:
Heliyon 2021 v.7 no.3 pp. e06529
ISSN:
2405-8440
Subject:
climate; climate change; credit; crop yield; death; deforestation; descriptive statistics; humans; labor; livelihood; livestock; population growth; rain; regression analysis; soil; temperature; water management; Ethiopia
Abstract:
... This study assessed the perceived causes, indicators and impacts of climate change by disaggregating farmers in to adaptor and non-adaptor groups in Goat based agro-pastoral livelihood zone of Ethiopia. The collected quantitative and qualitative data were analysed in descriptive statistics, linear regression, anomaly index, Likert rating scale and conceptual narrations. The findings demonstrated t ...
DOI:
10.1016/j.heliyon.2021.e06529

18. Challenges and actions to the environmental management of Bio-Medical Waste during COVID-19 pandemic in India

Author:
Mrinalini Goswami; Pranjal J. Goswami; Sunil Nautiyal; Satya Prakash
Source:
Heliyon 2021 v.7 no.3 pp. e06313
ISSN:
2405-8440
Subject:
COVID-19 infection; capital; disaster preparedness; environmental management; issues and policy; landscapes; pandemic; wastes; India
Abstract:
... The outbreak of COVID-19 has engendered a global health crisis along with diverse impacts on economy, society and environment. Efforts to combat this pandemic have also significantly shot-up the quantity of Bio-medical Waste (BMW) generation. Safe disposal of large quantity of BMW has been gradually posing a major challenge. BMW management is mostly implemented at municipal level following regulat ...
DOI:
10.1016/j.heliyon.2021.e06313

19. Chitosan and glyceryl monooleate nanostructures containing gallic acid isolated from amla fruit: targeted delivery system

Author:
Poournima Patil; Suresh Killedar
Source:
Heliyon 2021 v.7 no.3 pp. e06526
ISSN:
2405-8440
Subject:
bioactive properties; chitosan; drugs; encapsulation; fruits; gallic acid; homogenization; particle size; solubility; zeta potential
Abstract:
... Gallic acid, active constituent of amla fruit its natural abundance with beneficial multi actions in body make them attractive for clinical applications. In present study, we focused on extracting, separating and characterizing gallic acid from amla and further formulated into chitosan nanoparticles, so bring it to increase its aqueous solubility and thereby bioactivity. Gallic acid nanoparticles ...
DOI:
10.1016/j.heliyon.2021.e06526

20. Choices of chromatographic methods as stability indicating assays for pharmaceutical products: A review

Author:
Yik-Ling Chew; Mei-Ann Khor; Yau-Yan Lim
Source:
Heliyon 2021 v.7 no.3 pp. e06553
ISSN:
2405-8440
Subject:
active pharmaceutical ingredients; chemical species; drug formulations; drugs; qualitative analysis
Abstract:
... Stability indicating assay describes a technique which is used to analyse the stability of drug substance or active pharmaceutical ingredient (API) in bulk drug and pharmaceutical products. Stability indicating assay must be properly validated as per ICH guidelines. The important components in a stability indicating assay include sensitivity, specificity, accuracy, reliability, reproducibility and ...
DOI:
10.1016/j.heliyon.2021.e06553