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Topic Review
Cement Production in Nigeria
Cement is the most common and extensively used adhesive in the construction industry. It is employed on highways, houses, embankments, bridges, commercial establishments, and flyovers. In recent years, the Nigerian cement industry has grown from import dependency to an export-thriving epicentre within Africa. The country possesses the largest cement industry within West Africa, with at least 12 registered companies amounting to a merged cement capacity of 58.9 Mt/yr. Dangote Cement is the largest cement producer in Nigeria and West Africa, manufacturing a combined share of more than 28.5 Mt/yr of cement capacity. Also, LafargeHolcim (through its subsidiary AshakaCem & Lafarge WAPCO) and BUA Group boost 18.9 Mt/yr and 11.5 Mt/yr of integrated cement capacity, respectively.
  • 14.8K
  • 16 Sep 2021
Topic Review
Social Theory
Sciences and societies are increasing their demands of contributions from social theorists. International programs of research strengthen now the priorities of social impact and co-creation. Social impact means the presentation of evidence that scientific studies are contributing to social improvements, for instance, oriented to the UN Sustainable Development Goals; in order to develop and evaluate social impact, all sciences need the dialogue and collaboration of social theories. Co-creation means to create knowledge through dialogue between scientists and citizens, what also needs social theories. This demand is generating an increasing relevance of those social theories able to make these contributions, most of them, elaborated by networks and teams of different individuals from diverse disciplines. Traditional social theories created in the 19th and 20th centuries, mostly developed by individuals, provided important elements that are now included in the new theoretical process. 
  • 14.8K
  • 22 Dec 2020
Topic Review
Panopticism
Panopticism is a social theory named after the Panopticon, originally developed by French philosopher Michel Foucault in his book Discipline and Punish. The "panopticon" refers to an experimental laboratory of power in which behaviour could be modified, and Foucault viewed the panopticon as a symbol of the disciplinary society of surveillance.
  • 14.7K
  • 25 Oct 2022
Topic Review
Taro Corms
Taro [Colocasia esculenta (L.) Schott] is an ancient tuberous crop that is cultivated in tropical and subtropical climates as staple food source. The edible part of taro widely used for human consumption is known as corm. Taro corms contain valuable bioactive molecules effective against cancer and cancer-related risk factors, such as carcinogens and biological agents, several pathophysiological conditions, including oxidative stress and inflammation, while controlling metabolic dysfunctions and boosting the immunological response. Such broad effects are achieved by the taro health-influencing compounds displaying antitumoral, antimutagenic, immunomodulatory, anti-inflammatory, antioxidant, anti-hyperglycemic, and anti-hyperlipidemic activities. Although these health-promoting effects have been recognized since ancient times, as well as other valuable features of taro for food profit, such as hypo-allergenicity, gluten-free, and carbohydrates with medium-glycemic index, taro crop remains underexploited.
  • 14.7K
  • 29 Jan 2021
Topic Review
Impact of Nanotechnology
The impact of nanotechnology extends from its medical, ethical, mental, legal and environmental applications, to fields such as engineering, biology, chemistry, computing, materials science, and communications. Major benefits of nanotechnology include improved manufacturing methods, water purification systems, energy systems, physical enhancement, nanomedicine, better food production methods, nutrition and large-scale infrastructure auto-fabrication. Nanotechnology's reduced size may allow for automation of tasks which were previously inaccessible due to physical restrictions, which in turn may reduce labor, land, or maintenance requirements placed on humans. Potential risks include environmental, health, and safety issues; transitional effects such as displacement of traditional industries as the products of nanotechnology become dominant, which are of concern to privacy rights advocates. These may be particularly important if potential negative effects of nanoparticles are overlooked. Whether nanotechnology merits special government regulation is a controversial issue. Regulatory bodies such as the United States Environmental Protection Agency and the Health and Consumer Protection Directorate of the European Commission have started dealing with the potential risks of nanoparticles. The organic food sector has been the first to act with the regulated exclusion of engineered nanoparticles from certified organic produce, firstly in Australia and the UK, and more recently in Canada , as well as for all food certified to Demeter International standards
  • 14.6K
  • 18 Oct 2022
Topic Review
In-Vehicle Networks
Modern vehicles are no longer simply mechanical devices. Connectivity between the vehicular network and the outside world has widened the security holes that hackers can use to exploit a vehicular network. Controller Area Network (CAN), FlexRay, and automotive Ethernet are popular protocols for in-vehicle networks (IVNs) and will stay in the industry for many more years. However, these protocols were not designed with security in mind. They have several vulnerabilities, such as lack of message authentication, lack of message encryption, and an ID-based arbitration mechanism for contention resolution. Adversaries can use these vulnerabilities to launch sophisticated attacks that may lead to loss of life and damage to property. Thus, the security of the vehicles should be handled carefully. In this paper, we investigate the security vulnerabilities with in-vehicle network protocols such as CAN, automotive Ethernet, and FlexRay. A comprehensive survey on security attacks launched against in-vehicle networks is presented along with countermeasures adopted by various researchers. Various algorithms have been proposed in the past for intrusion detection in IVNs. However, those approaches have several limitations that need special attention from the research community. Blockchain is a good approach to solving the existing security issues in IVNs, and we suggest a way to improve IVN security based on a hybrid blockchain.
  • 14.6K
  • 15 Apr 2021
Topic Review
Ivermectin as Broad-Spectrum Host-Directed Antiviral
The small molecule macrocyclic lactone ivermectin, approved by the US Food and Drug Administration for parasitic infections, has received attention in the last eight years due to its exciting potential as an antiviral. It was identified in a high-throughput chemical screen as inhibiting recognition of the nuclear localizing Human Immunodeficiency Virus 1 (HIV-1) integrase protein by the host heterodimeric importin (IMP) α/β1 complex, and has since been shown to bind directly to IMPα to induce conformational changes that prevent its normal function in mediating nuclear import of key viral and host proteins. Excitingly, cell culture experiments show robust antiviral action towards HIV-1, dengue virus (DENV), Zika virus, West Nile virus, Venezuelan equine encephalitis virus, Chikungunya virus, Pseudorabies virus, adenovirus, and SARS-CoV-2 (COVID-19). Phase III human clinical trials have been completed for DENV, with >60 trials currently in progress worldwide for SARS-CoV-2.
  • 14.6K
  • 30 Sep 2020
Topic Review
Lawsuits Against God
Lawsuits against God have occurred in real life and in fiction. Issues debated in the actions include the problem of evil and harmful "acts of God".
  • 14.6K
  • 29 Nov 2022
Topic Review
Bing (Search Engine)
Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety of search services, including web, video, image and map search products. It is developed using ASP.NET. Bing, Microsoft's replacement for Live Search, was unveiled by Microsoft CEO Steve Ballmer on May 28, 2009, at the All Things Digital conference in San Diego, California, for release on June 3, 2009. Notable new features at the time included the listing of search suggestions while queries are entered and a list of related searches (called "Explore pane") based on semantic technology from Powerset, which Microsoft had acquired in 2008. In July 2009, Microsoft and Yahoo! announced a deal in which Bing would power Yahoo! Search. All Yahoo! Search global customers and partners made the transition by early 2012. The deal was altered in 2015, meaning Yahoo! was only required to use Bing for a "majority" of searches. In October 2011, Microsoft stated that they were working on new back-end search infrastructure with the goal of delivering faster and slightly more relevant search results for users. Known as "Tiger", the new index-serving technology had been incorporated into Bing globally since August that year. In May 2012, Microsoft announced another redesign of its search engine that includes "Sidebar", a social feature that searches users' social networks for information relevant to the search query. (As of October 2018), Bing is the third largest search engine globally, with a query volume of 4.58%, behind Google (77%) and Baidu (14.45%). Yahoo! Search, which Bing largely powers, has 2.63%.
  • 14.5K
  • 27 Oct 2022
Topic Review
Plant Embryogenesis
Plant embryogenesis is a process that occurs after the fertilization of an ovule to produce a fully developed plant embryo. This is a pertinent stage in the plant life cycle that is followed by dormancy and germination. The zygote produced after fertilization must undergo various cellular divisions and differentiations to become a mature embryo. An end stage embryo has five major components including the shoot apical meristem, hypocotyl, root meristem, root cap, and cotyledons. Unlike animal embryogenesis, plant embryogenesis results in an immature form of the plant, lacking most structures like leaves, stems, and reproductive structures. However, both plants and animals pass through a phylotypic stage that evolved independently and that causes a developmental constraint limiting morphological diversification.
  • 14.4K
  • 28 Apr 2023
Topic Review
Process of Converting Ammonia to Hydrogen
Hydrogen technology for transition to a hydrogen-based economy requires supplying clean and renewable energy and capture of CO2 from current fossil hydrogen production. Ammonia is the most popular substance as a green hydrogen carrier because it does not carry carbon, and the total hydrogen content of ammonia is higher than other fuels and is thus suitable to convert to hydrogen. Ammonia cracking is a process of producing hydrogen from ammonia decomposition over a catalyst at high temperatures and is preferentially performed at normal pressures. 
  • 14.3K
  • 12 Dec 2022
Topic Review
Mapogo Lion Coalition
The Mapogo lion coalition was a band of male South African lions that controlled the Sabi Sand region in Kruger National Park. The coalition became infamous for their sheer power and strength in taking over and dominating an area of approximately 70,000 ha (170,000 acres). It is believed the Mapogos killed in excess of 100 lions and cubs in a little over a year. The statistics may be higher given their coverage of such large territories. At its peak, the coalition consisted of six males - the leader Makulu (also spelled as Makhulu), Rasta, Scar, Pretty Boy, Kinky Tail and Mr. T.
  • 14.3K
  • 09 Oct 2022
Topic Review
Physical Law
A physical law or a law of physics is a statement "inferred from particular facts, applicable to a defined group or class of phenomena, and expressible by the statement that a particular phenomenon always occurs if certain conditions be present." Physical laws are typically conclusions based on repeated scientific experiments and observations over many years and which have become accepted universally within the scientific community. The production of a summary description of our environment in the form of such laws is a fundamental aim of science. These terms are not used the same way by all authors. The distinction between natural law in the political-legal sense and law of nature or physical law in the scientific sense is a modern one, both concepts being equally derived from physis, the Greek word (translated into Latin as natura) for nature.
  • 14.3K
  • 01 Dec 2022
Topic Review
Thelema
Thelema (/θəˈliːmə/) is a social or spiritual philosophy derived from Western esotericism. The word thelema is the English transliteration of the Koine Greek noun θέλημα (pronounced [θélɛ:ma]), "will", from the verb θέλω (ethélō): "to will, wish, want or purpose". While Thelema is most often regarded as a religion it is also often called a philosophy. Thelema was developed in the early 1900s by Aleister Crowley, an English writer, mystic, and ceremonial magician. He believed himself to be the prophet of a new age, the Æon of Horus, based upon a spiritual experience that he and his wife, Rose Edith, had in Egypt in 1904. By his account, a possibly non-corporeal or "praeterhuman" being that called itself Aiwass contacted him through Rose and dictated, through Rose, a text known as The Book of the Law or Liber AL vel Legis, which outlined the principles of Thelema. The Thelemic pantheon—a collection of gods and goddesses who either literally exist or serve as symbolic archetypes or metaphors, depending on one's viewpoint—includes a number of deities, primarily a trio adapted from ancient Egyptian religion, who are the three speakers of The Book of the Law: Nuit, Hadit and Ra-Hoor-Khuit. Crowley described these deities as a "literary convenience". The religion is founded on the idea that the 20th century marked the beginning of the Aeon of Horus, in which a new ethical code would be followed: "Do what thou wilt shall be the whole of the Law". This means that adherents of Thelema should seek out and follow their true path, i.e. their True Will. The philosophy also emphasizes the ritual practice of Magick. As Crowley developed the religion, he wrote widely on the topic, as well as producing more "inspired" writings that he collectively termed The Holy Books of Thelema. He also associated Thelemic spiritual practice with concepts rooted in occultism, yoga, and Eastern and Western mysticism, especially the Qabalah. Aspects of Thelema and Crowley's thought in general inspired the development of Wicca and, to a certain degree, the rise of Modern Paganism as a whole, as well as chaos magick and Satanism. Some scholars, such as Hugh Urban, also believe Thelema to have been an influence on the development of Scientology, but others, such as J. Gordon Melton, deny any such connection.
  • 14.3K
  • 20 Oct 2022
Topic Review
2004 Indian Ocean Tsunami in Malaysia
The tsunami is one of the deadliest natural disasters, responsible for more than 260,000 deaths and billions in economic losses over the last two decades. The footage of the devastating power of the 2004 Indian Ocean tsunami perhaps remains vivid in the memory of most survivors, and Malaysia was one of the countries affected by the unprecedented 2004 tsunami. It was the first time the Malaysian government had managed such a great disaster. A compilation of post-event observations regarding tsunami characteristics is first presented in the form of maps, followed by building damage, including damage modes of wall failure, total collapse, debris impact and tilting of structures.
  • 14.3K
  • 25 Aug 2022
Topic Review
Human Eye Color
Eye color is a polygenic phenotypic character and is determined by the amount and type of pigments in the eye's iris. Humans and other animals have many phenotypic variations in eye color, as blue, brown, gray, green and others. These variations constitute phenotypic traits. The genetics of eye color are complicated, and color is determined by multiple genes. Some of the eye-color genes include EYCL1 (a green/blue eye-color gene located on chromosome 19), EYCL2 (a brown eye-color gene) and EYCL3 (a brown/blue eye-color gene located on chromosome 15). The once-held view that blue eye color is a simple recessive trait has been shown to be wrong. The genetics of eye color are so complex that almost any parent-child combination of eye colors can occur. In human eyes, these variations in color are attributed to varying ratios of eumelanin produced by melanocytes in the iris. The brightly colored eyes of many bird species are largely determined by other pigments, such as pteridines, purines, and carotenoids. Three main elements within the iris contribute to its color: the melanin content of the iris pigment epithelium, the melanin content within the iris stroma, and the cellular density of the iris stroma. In eyes of all colors, the iris pigment epithelium contains the black pigment, eumelanin. Color variations among different irides are typically attributed to the melanin content within the iris stroma. The density of cells within the stroma affects how much light is absorbed by the underlying pigment epithelium. OCA2 gene polymorphism, close to proximal 5′ regulatory region, explains most human eye-color variation.
  • 14.2K
  • 05 Dec 2022
Topic Review
Ali in the Quran
The majority of Islamic commentators do not believe that Ali ibn Abu Talib (Arabic: عَـلِي ابْـن أَبُـو طَـالِـب) is mentioned explicitly in the Quran. However, Shi'ite scholars and some Sunni scholars interpret many Quranic verses as referring to Ali. Shi'ite scholars also believe other Imams have been referred in the Quran. They believe Imams are referred to as "the signs of Allah, the way, the straight path, the light of Allah, the inheritors of the Book, the people of knowledge, the holders of authority and other such designations," Shi'ite sources state, Muhammad al-Baqir answers: "Allah revealed Salat to his Prophet but never said of three or four Rakats, revealed Zakat but did not mention to its details, revealed Hajj but did not count its Tawaf and the Prophet interpreted their details. Allah revealed this verse and Prophet said this verse is about Ali, Hasan, Husayn and the other Twelve Imams." Shi'ite scholars, thus, have argued that a quarter of Qur'anic verses are stating the station of imams. Such a view is rejected by Sunni scholars, who argue that some of these verses instead refer to the Quraysh or Muhammad's wives.
  • 14.2K
  • 14 Oct 2022
Topic Review
Elaboration Likelihood Model
The elaboration likelihood model (ELM) of persuasion is a dual process theory describing the change of attitudes. The ELM was developed by Richard E. Petty and John Cacioppo in 1980. The model aims to explain different ways of processing stimuli, why they are used, and their outcomes on attitude change. The ELM proposes two major routes to persuasion: the central route and the peripheral route.
  • 14.2K
  • 01 Dec 2022
Topic Review
Government Censorship of Telegram Messenger
Telegram Messenger application has been blocked by multiple countries.
  • 14.1K
  • 14 Nov 2022
Topic Review
Nasolabial Angle in Orthodontic Diagnosis
The nasolabial angle (NLA) is one of the key factors to be studied in an orthodontic diagnosis for the aesthetics of the nose and facial profile.
  • 14.1K
  • 06 Feb 2022
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