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Topic Review
Shipbuilding Supply Chain 4.0
The supply chain is currently taking on a very important role in organizations seekingto improve the competitiveness and profitability of the company. Its transversal character mainly places it in an unbeatable position to achieve this role. This article, through a study of each of the key enabling technologies of Industry 4.0, aims to obtain a general overview of the current state of the art in shipbuilding adapted to these technologies. To do so, a systematic review of what the scientific community says is carried out, dividing each of the technologies into di erent categories. In addition, the global vision of countries interested in each of the enabling technologies is also studied. Both studies present a general vision to the companies of the concerns of the scientific community, thus encouraging research on the subject that is focused on the sustainability of theshipbuilding supply chain.
  • 4.3K
  • 14 Apr 2021
Topic Review
Age of the Earth
The age of the Earth is estimated to be 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age may represent the age of the Earth's accretion, or core formation, or of the material from which the Earth formed. This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples. Following the development of radiometric age-dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old. The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Calcium–aluminium-rich inclusions—the oldest known solid constituents within meteorites that are formed within the Solar System—are 4.567 billion years old, giving a lower limit for the age of the Solar System. It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the time this accretion process took is not yet known, and predictions from different accretion models range from a few million up to about 100 million years, the difference between the age of Earth and of the oldest rocks is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.
  • 4.3K
  • 21 Nov 2022
Topic Review
Principles of Aboveground Biomass Estimation via Remote Sensing
Quantifying forest aboveground biomass (AGB) is essential for elucidating the global carbon cycle and the response of forest ecosystems to climate change.  Remote-sensing techniques have played a vital role in forest AGB estimation at different scales.
  • 4.3K
  • 15 Aug 2023
Topic Review
Ocean Planet
An ocean planet, ocean world, water world, aquaplanet or panthalassic planet is a type of terrestrial planet that contains a substantial amount of water either at its surface or subsurface. The term ocean world is also used sometimes for astronomical bodies with an ocean composed of a different fluid, such as lava (the case of Io), ammonia (in a eutectic mixture with water, as is likely the case of Titan's inner ocean) or hydrocarbons like on Titan's surface (which could be the most abundant kind of exosea). Earth is the only astronomical object known to have bodies of liquid water on its surface, although several exoplanets have been found with the right conditions to support liquid water. For exoplanets, current technology cannot directly observe liquid surface water, so atmospheric water vapor may be used as a proxy. The characteristics of ocean worlds—or ocean planets—provide clues to their history and the formation and evolution of the Solar System as a whole. Of additional interest is their potential to originate and host life.
  • 4.3K
  • 19 Oct 2022
Topic Review
Art Therapy
Art therapy (not to be confused with arts therapy, which includes other creative therapies such as drama therapy and music therapy) is a distinct discipline that incorporates creative methods of expression through visual art media. Art therapy, as a creative arts therapy profession, originated in the fields of art and psychotherapy and may vary in definition. There are three main ways that art therapy is employed. The first one is called analytic art therapy. Analytic art therapy is based on the theories that come from analytical psychology, and in more cases, psychoanalysis. Analytic art therapy focuses on the client, the therapist, and the ideas that are transferred between the both of them through art. Another way that art therapy is utilized is art psychotherapy. This approach focuses more on the psychotherapist and their analysis of their clients artwork verbally. The last way art therapy is looked at is through the lens of art as therapy. Some art therapists practicing art as therapy believe that analyzing the client’s artwork verbally is not essential, therefore they stress the creation process of the art instead. In all of these different approaches to art therapy, the art therapist's client goes on the journey to delve into their inner thoughts and emotions by the use of paint, paper and pen, clay, sand, or maybe even fabric. Art therapy can be used to help people improve cognitive and sensory motor function, self-esteem, self awareness, emotional resilience. It may also aide in resolving conflicts and reduce distress. Current art therapy includes a vast number of other approaches such as person-centered, cognitive, behavior, Gestalt, narrative, Adlerian, and family. The tenets of art therapy involve humanism, creativity, reconciling emotional conflicts, fostering self-awareness, and personal growth.
  • 4.3K
  • 14 Nov 2022
Topic Review
Antenna
Antennae (Template:Singular antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments. While they are typically sensory organs, the exact nature of what they sense and how they sense it is not the same in all groups. Functions may variously include sensing touch, air motion, heat, vibration (sound), and especially smell or taste. Antennae are sometimes modified for other purposes, such as mating, brooding, swimming, and even anchoring the arthropod to a substrate. Larval arthropods have antennae that differ from those of the adult. Many crustaceans, for example, have free-swimming larvae that use their antennae for swimming. Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched) antenna-like structures, followed by one or more pairs of biramous (having two major branches) leg-like structures, as seen in some modern crustaceans and fossil trilobites. Except for the chelicerates and proturans, which have none, all non-crustacean arthropods have a single pair of antennae.
  • 4.3K
  • 25 Oct 2022
Topic Review
Antimicrobial Peptides for Wound Infections
Antimicrobial peptides (AMPs), also called host defense peptides (HDPs), are found in bacteria, fungi, plants, and animals. They typically consist of 10–50 amino acid residues (very rarely up to 100 amino acids) and generally possess cationic (net charge ranging from −4 to +20) and amphipathic structures. 
  • 4.3K
  • 09 Dec 2020
Topic Review
Importance of Mud Crab in Saline Water Ecosystems
Mud crabs genus Scylla (S. serrata, S. tranquebarica, S. olivacea, and S. paramamosain) is an important member of mangrove/estuarine saline water ecosystems than other crustaceans due to its major activities (biological burrowing and bioturbation creation) in protecting and spreading mangrove forests. Mud crabs are generally found in estuaries, especially in mangrove forests of India, Taiwan, Japan, China, South Africa, Indonesia, and the Philippines of Indo-Pacific places. Similarly, Malaysia, Singapore, Western Samoa, Salmon Island, Fiji, and New Caledonia are big mud crabs habitats.
  • 4.3K
  • 08 Jun 2023
Topic Review
Benzimidazole and Their Derivatives
Heterocyclic compounds are significant lead drug candidates based on their various structure–activity relationships (SAR), and their use in pharmaceutics is constantly developing. Benzimidazole (BnZ) is synthesized by a condensation reaction between benzene and imidazole. The BnZ structure consists of two nitrogen atoms embedded in a five-membered imide ring which is fused with a benzene ring. 
  • 4.3K
  • 23 Oct 2023
Topic Review
Elongational Flow
Elongational flow is a particular kind of flow involved in many industrially relevant processing operations of thermoplastics (such as fiber spinning, film blowing, foaming and thermoforming) in which the velocity gradient develops in the same direction as the flow itself.
  • 4.3K
  • 26 Oct 2021
Topic Review
Sweat as a Biological Fluid of Alcohol Detection
The continued focus on improving the quality of human life has encouraged the development of increasingly efficient, durable, and cost-effective products in healthcare. Over the last decade, there has been substantial development in the field of technical and interactive textiles that combine expertise in electronics, biology, chemistry, and physics. Most recently, the creation of biosensors capable of quantifying biometric data in biological fluids to detect a specific disease or the physical condition of an individual is being studied. The ultimate goal is to provide access to medical diagnosis anytime and anywhere. Presently, alcohol is considered the most commonly used addictive substance worldwide, being one of the main causes of death in road accidents. 
  • 4.3K
  • 05 May 2022
Topic Review
Metabolism and Role of Creatine
Creatine is a key player in  energy metabolism of excitable cells. This is an essential outline of its role and procurement by the organism, adapted by the author (Balestrino M, University of Genoa, Italy) from his Open Access paper  Role of Creatine in the Heart: Health and Disease, that was published in Nutrients, 2021; 13(4):1215. https://doi.org/10.3390/nu13041215.
  • 4.3K
  • 27 Apr 2021
Topic Review
Plant Stinging Hairs
True stinging hairs are highly specialized plant structures that are able to inject a physiologically active liquid into the skin. They can be classified into two basic types: Urtica-type stinging hairs with the classical “hypodermic syringe” mechanism expelling only liquid, and Tragia-type stinging hairs expelling a liquid together with a sharp crystal. Since the middle of the 20th century, neurotransmitters(acetylcholine, histamine, serotonin) have been repeatedly detected in stinging hairs of Urticaceae; these substances can explain some of the physiological effects of stinging hairs, but fail to completely explain neuropathic effects, pointing to some yet unidentified neurotoxins. 
  • 4.3K
  • 22 Sep 2021
Topic Review
Biological Production of Vanillin
Vanillin (4-hydroxy-3-methoxybenzaldehyde), the primary ingredient in vanilla bean or pod extracts, possesses a rich, creamy, and distinctive vanilla smell, which is also one of the most significant aromas in the world. Vanillin can serve as a flavoring agent in the food industry (about 60%), a pharmaceutical intermediate in the pharmaceutical industry (about 7%), and a scent ingredient in the cosmetics sector (about 33%).
  • 4.3K
  • 08 May 2023
Topic Review Peer Reviewed
Robert of Anjou (1309–1343)
Robert of Anjou King of Sicily (1309–1343). Robert of Anjou was the third king of the Angevin dynasty on the throne of Sicily. He ruled from 1309 to 1343, but, in these years, Sicily was under the domain of the Aragonese dynasty and, hence, his authority was limited to the continental land of the Kingdom and his court was mainly focused in the city of Naples. From an iconographic point of view, he is particularly interesting because, between his official representations (namely, commissioned directly by him or his entourage), he was the first king of Sicily who made use not only of stereotyped images of himself, but also of physiognomic portraits. In particular, this entry focuses on these latter items, comprising the following four artworks: Simone Martini’s altarpiece, the Master of Giovanni Barrile’s panel, the Master of the Franciscan tempera’s canvas, and the so-called Lello da Orvieto’s fresco.
  • 4.3K
  • 13 Apr 2022
Topic Review
Juan Manuel de Rosas
Template:Infobox governor Juan Manuel de Rosas (30 March 1793 – 14 March 1877), nicknamed "Restorer of the Laws", was a politician and army officer who ruled Buenos Aires Province and briefly the Argentine Confederation. Although born into a wealthy family, Rosas independently amassed a personal fortune, acquiring large tracts of land in the process. Rosas enlisted his workers in a private militia, as was common for rural proprietors, and took part in the disputes that led to numerous civil wars in his country. Victorious in warfare, personally influential, and with vast landholdings and a loyal private army, Rosas became a caudillo, as provincial warlords in the region were known. He eventually reached the rank of brigadier general, the highest in the Argentine Army, and became the undisputed leader of the Federalist Party. In December 1829, Rosas became governor of the province of Buenos Aires and established a dictatorship backed by state terrorism. In 1831, he signed the Federal Pact, recognising provincial autonomy and creating the Argentine Confederation. When his term of office ended in 1832, Rosas departed to the frontier to wage war on the indigenous peoples. After his supporters launched a coup in Buenos Aires, Rosas was asked to return and once again took office as governor. Rosas reestablished his dictatorship and formed the repressive Mazorca, an armed parapolice that killed thousands of citizens. Elections became a farce, and the legislature and judiciary became docile instruments of his will. Rosas created a cult of personality and his regime became totalitarian in nature, with all aspects of society rigidly controlled. Rosas faced many threats to his power during the late 1830s and early 1840s. He fought a war against the Peru–Bolivian Confederation, endured a blockade by France, faced a revolt in his own province and battled a major rebellion that lasted for years and spread to several Argentine provinces. Rosas persevered and extended his influence in the provinces, exercising effective control over them through direct and indirect means. By 1848, he had extended his power beyond the borders of Buenos Aires and was ruler of all of Argentina. Rosas also attempted to annex the neighbouring nations of Uruguay and Paraguay. France and Great Britain jointly retaliated against Argentine expansionism, blockading Buenos Aires for most of the late 1840s, but were unable to halt Rosas, whose prestige was greatly enhanced by his string of successes. When the Empire of Brazil began aiding Uruguay in its struggle against Argentina, Rosas declared war in August 1851, starting the Platine War. This short conflict ended with Rosas being defeated and absconding to Britain. His last years were spent in exile living as a tenant farmer until his death in 1877. Rosas garnered an enduring public perception among Argentines as a brutal tyrant. Since the 1930s, an authoritarian, anti-Semitic, and racist political movement in Argentina called Revisionism has tried to improve Rosas's reputation and establish a new dictatorship in the model of his regime. In 1989, his remains were repatriated by the government in an attempt to promote national unity, seeking forgiveness for him and especially for the 1970s military dictatorship. Rosas remains a controversial figure in Argentina in the 21st century.
  • 4.3K
  • 13 Oct 2022
Topic Review
Solar Power
Solar power is the conversion of renewable energy from sunlight into electricity, either directly using photovoltaics (PV), indirectly using concentrated solar power, or a combination. Photovoltaic cells convert light into an electric current using the photovoltaic effect. Concentrated solar power systems use lenses or mirrors and solar tracking systems to focus a large area of sunlight to a hot spot, often to drive a steam turbine. Photovoltaics were initially solely used as a source of electricity for small and medium-sized applications, from the calculator powered by a single solar cell to remote homes powered by an off-grid rooftop PV system. Commercial concentrated solar power plants were first developed in the 1980s. Since then, as the cost of solar electricity has fallen, grid-connected solar PV systems have grown more or less exponentially. Millions of installations and gigawatt-scale photovoltaic power stations have been and are being built. Solar PV has rapidly become a viable low-carbon technology, and as of 2020, provides the cheapest source of electricity in history. As of 2021, solar generates 4% of the world's electricity, compared to 1% in 2015 when the Paris Agreement to limit climate change was signed. Along with onshore wind, the cheapest levelised cost of electricity is utility-scale solar. The International Energy Agency said in 2021 that under its "Net Zero by 2050" scenario solar power would contribute about 20% of worldwide energy consumption, and solar would be the world's largest source of electricity.
  • 4.3K
  • 20 Oct 2022
Topic Review
Tourism-phobia
The perception of residents of tourist areas affected by intensification of tourism or overtourism, has changed from a positive or neutral vision to overt annoyance or irritation, which has generated a certain debate that has been conveyed in the media, an innovative aspect in the field of tourism. The term tourism phobia is mentioned for the first time in Spain linked to problems related to tourism and tourists. Donaire (Romero et al., 2019) specifically mentions the term tourism-phobia, referring to discontent in the latter stages in the Doxey's model (1975). Huete and Mantecón (2018) and Milano (2017, 2018) have linked tourism-phobia with a certain social opposition and criticism of tourist management. Milano (2018) describes that social criticism within a context of social organizations and residents outlining their disagreement with certain tourist activities. Huete and Mantecón (2018) coincides with Milano by pointing out that what the  media considers to be tourism-phobia is essentially a social critique of certain aspects of tourism. Other authors (Alcalde et al., 2018) highlight that the concept of tourism- phobia has been used in a misguided way, confusing the social discontent due to too many tourists with the rejection of them. Simultaneously and as opposed to the concept of tourism-phobia, the term tourism-philia arises, which refers to the perception of the positive effects of tourism on the local economy and society (Zerva et al., 2019).
  • 4.3K
  • 27 Oct 2020
Topic Review
Battery Modelling Techniques
The battery modelling (BM) problem is a constrained, multi-dimensional, mixed variable, non-convex, non-linear optimisation problem. Many bio-inspired techniques have been successfully employed to estimate the battery parameters. When bio-inspired algorithms are implemented for COM to extract parameters in real time, then they are called grey box models.
  • 4.3K
  • 28 Oct 2021
Topic Review
Threats to Sustainability
Plastics are a precious, versatile set of materials. The accumulation of plastic waste threatens the environment. Recycling plastic waste can produce many new products. The many opportunities for using plastic waste create pressure for a strategy to develop or improve current waste management systems to reduce the negative impact on humans, fauna and flora.
  • 4.3K
  • 13 Dec 2022
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