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Optical metamaterial waveguide for light spectral reshaping and filtering
An optical waveguide is defined as a structure that can confine and guide optical light to follow a predefined path from a transmitter to a receiver. The waveguide that we are discussing is made of silicon semiconductor material that is built over a bulk insulating substrate made of silicon dioxide material. This silicon-on-insulator structure is fabricated with a well-known, simple, […]
Using a traffic simulator to transform the public transport system
Introduction Poor transportation systems and traffic congestion are identified as severe problems all over the world, especially in the developing countries. Afghanistan is also not an exception. Cities in such countries are mainly functionally monocentric (having one main central point), and the connection between suburbs are dependent on the central business district (CBD). This means that there are no connections […]
Thoughts on Artificial Intelligence and the origin of life resulting from general relativity
NONLINEAR TIME AND ELECTRICAL ENGINEERING Deep Learning, Artificial Intelligence, and related subjects are all truly fascinating topics. As I will argue in this essay, they’re all parts of an overarching topic viz. that the entire universe, including space-time and matter, is composed of Artificial Intelligence. Universal AI is a natural consequence of the cosmos being composed of BITS (BInary digiTS). […]
Using superhydrophobic surfaces to reduce marine corrosion
Marine atmospheric corrosion – the effect of seawater and sea air in coastal areas – is costly to our societies in terms of safety, economics, functionality, and cultural heritage. To deal with marine atmospheric corrosion, the current general protection measures mainly aim to improve the corrosion resistance of the material itself, or to isolate the base from the corrosive medium, […]
Peer review, fake knowledge, and the quest for simple and useful science
Peer review is the process that most academic journals use to check the credibility of papers submitted to them. Typically, the editor chooses two or three ‘peers’ – academics working in the same field – and sends them a copy of the paper to review. When the reviews come back, the editor then decides whether to publish the paper unaltered […]
Impact of COVID-19 on the drug supply chain: Adapting to the new normal
Where we are now Workplaces and organisations have been forced into adopting alternative working patterns, a paradigm shift that was triggered by the COVID-19 pandemic. A number of businesses have been pushed into a world of uncertainty, where the survival of the company has to be the primary focus and all other plans must take a back seat. During these […]
Epidemiology of idiopathic inflammatory myopathies in Africa: A contemporary systematic review
Method We registered the protocol with PROSPERO, CRD42020186781. PRISMA guidelines were applied to report this review. Studies addressing the epidemiology of IIMs in Africa and released before 30 December 2020, were searched for in electronic databases (MEDLINE, EMBASE and African Journals Online) and manually. Case series involving fewer than 9 participants, studies focusing on IIMs in pregnant women, articles lacking […]
Epidemiology of digital clubbing and hypertrophic osteoarthropathy: A systematic review
In reporting this systematic review, we were guided by PRISMA statements. Studies reporting the prevalence of HOA/clubbing that had been released up to 23 March 2021, were searched for in electronic databases (PubMed, EMBASE, Web of Sciences) and manually. Studies not involving humans, those with fewer than 10 participants, those whose full-texts were not available after a request to the […]
Epidemiology of Sjogren syndrome in Africa: A scoping review
Methodology We report the review in accordance with O’Malley and Arksey methods. We searched for studies reporting on the epidemiology of Sjogren’s syndrome (SS) in Africa that were published prior to 17 May 2020, both in electronic databases (MEDLINE, EMBASE and African Journals Online) and manually. Studies which focused on Sjogren’s syndrome symptoms, reports based on fewer than 10 participants, […]
Research overview on marine hoses for (un)Loading operations using floating offshore structures
Introduction There have been noticeable important developments in the offshore-marine industry in recent years [1-4]. Flexible hoses, flexible risers, and marine composites are examples of these advancements [5-10]. Marine composite hoses and marine composite risers have seen additional advancements using composites [11-14]. More advances are being developed as a result of failures in the use of risers in the maritime industry. […]