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Topic Review
Cancer (Constellation)
Cancer, recognized as one of the twelve zodiac constellations, is situated in the northern celestial hemisphere. Named after the Latin word for crab, Cancer is associated with the Greek myth of the crab sent by Hera to distract Hercules during his battle with the Hydra.
  • 3.7K
  • 29 Feb 2024
Topic Review
Health Benefits of Indigenous Durian
Durian (Durio zibethinus Murr.) is an energy-dense seasonal tropical fruit grown in Southeast Asia. It is one of the most expensive fruits in the region. It has a creamy texture and a sweet-bitter taste. The unique durian flavour is attributable to the presence of fat, sugar, and volatile compounds such as esters and sulphur-containing compounds such as thioacetals, thioesters, and thiolanes, as well as alcohols.
  • 3.7K
  • 06 Jul 2021
Topic Review
Weight
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force. Others define it as the magnitude of the reaction force exerted on a body by mechanisms that keep it in place: the weight is the quantity that is measured by, for example, a spring scale. Thus, in a state of free fall, the weight would be zero. In this sense of weight, terrestrial objects can be weightless: ignoring air resistance, the famous apple falling from the tree, on its way to meet the ground near Isaac Newton, would be weightless. The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon. Although weight and mass are scientifically distinct quantities, the terms are often confused with each other in everyday use (i.e. comparing and converting force weight in pounds to mass in kilograms and vice versa). Further complications in elucidating the various concepts of weight have to do with the theory of relativity according to which gravity is modeled as a consequence of the curvature of spacetime. In the teaching community, a considerable debate has existed for over half a century on how to define weight for their students. The current situation is that a multiple set of concepts co-exist and find use in their various contexts.
  • 3.7K
  • 19 Oct 2022
Topic Review Video Peer Reviewed
Sheet Barrier and Intubating Stylet
Coronavirus disease 2019 (COVID-19), a respiratory syndrome caused by SARS-CoV-2, can be transmitted through respiratory droplets and aerosols of droplet nuclei. Aerosol-generating medical procedures (AGMP) are needed to take care of critically ill patients but place health care providers at risk of infection. With limited supplies of personal protective equipment (PPE), barrier systems were developed to help protect health care providers during tracheal intubation. The video intubating stylet shows promise to become the preferred intubation device in conjunction with plastic sheet barriers during the COVID-19 pandemic.
  • 3.7K
  • 13 Apr 2022
Topic Review
Sustainable Road Infrastructure
The implementation of sustainability in road infrastructure has become dependent on providing measurements and guidance for including sustainable principles in road projects, resulting in a dozen voluntary certification and rating systems to evaluate the level of sustainability of road design, construction, and maintenance. The predominance of issues which analyse the life cycle assessment of road infrastructures in its both environmental and economic dimension as a way to mitigate their effects on climate change, including the reduction of resources and energy consumption, or of energy consumption and greenhouse gases emissions during the construction and operation stages, respectively.
  • 3.7K
  • 27 Dec 2022
Topic Review
3p Deletion Syndrome
3p deletion syndrome is a condition that results from a chromosomal change in which a small piece of chromosome 3 is deleted in each cell. The deletion occurs at the end of the short (p) arm of the chromosome. This chromosomal change often leads to intellectual disability, developmental delay, and abnormal physical features.
  • 3.7K
  • 23 Dec 2020
Topic Review
Dhammakaya Meditation
Dhammakaya meditation is a method of Buddhist meditation developed and taught by the Thai meditation teacher Luang Pu Sodh Candasaro (1885–1959).[note 1] In Thailand, it is known as vijjā dhammakāya, which translates as 'knowledge of the body of truth'. It is the meditation tradition that is at the center of the Dhammakaya Movement. The Dhammakaya meditation method has become very popular in Thailand and other parts of Southeast Asia, and has been described as a revival of samatha (tranquility) meditation in Thailand. The method was discovered by Luang Pu Sodh in the 1910s. Followers of the Dhammakaya Movement believe the method was the same as the original method the Buddha used to attain enlightenment. According to Luang Pu Sodh, the Dhammakāya, the core concept of the tradition, can be found within every human being. The most important aspect of the meditation method is the focus on the center of the body. As of 2008, there was still scholarly debate as to the origins of Dhammakaya meditation. Scholars refer to the Yogavacara tradition as a possible source, or that the method might be new or partly new. Dhammakaya meditation is taught at several temples of the movement, and consists of a stage of samatha (tranquility) and vipassana (insight), following the structure of the Visuddhimagga, a standard fifth-century Theravāda guide about meditation. In the method, the stages are described in terms of inner bodies (Pali: kāya), but also in terms of meditative absorptions (Pali: jhānas). Dhammakaya meditation has been the subject of considerable discussion among Buddhists as to its authenticity and efficacy, and also has been the subject of several scientific studies.
  • 3.7K
  • 22 Nov 2022
Topic Review
Ecosystem Services
Ecosystem services are the many and varied benefits to humans gifted by the natural environment and from healthy ecosystems. Such ecosystems include, for example, agroecosystems, forest ecosystems, grassland ecosystems and aquatic ecosystems. These ecosystems, functioning in healthy relationship, offer such things like natural pollination of crops, clean air, extreme weather mitigation, human mental and physical well-being. Collectively, these benefits are becoming known as 'ecosystem services', and are often integral to the provisioning of clean drinking water, the decomposition of wastes, and resilience and productivity of food ecosystems. While scientists and environmentalists have discussed ecosystem services implicitly for decades, the Millennium Ecosystem Assessment (MA) in the early 2000s popularized this concept. There, ecosystem services are grouped into four broad categories: provisioning, such as the production of food and water; regulating, such as the control of climate and disease; supporting, such as nutrient cycles and oxygen production; and cultural, such as spiritual and recreational benefits. To help inform decision-makers, many ecosystem services are being valuated in order to draw equivalent comparisons to human engineered infrastructure and services.
  • 3.7K
  • 28 Nov 2022
Topic Review
QuEChERS Application to the Determination of Pyrrolizidine Alkaloids
The identification of concerning high levels of pyrrolizidine alkaloids (PAs) in a wide variety of food products has raised the occurrence of these natural toxins as one of the main current issues of the food safety field. Consequently, a regulation with maximum concentration levels of these alkaloids has been published to monitor their occurrence in several foodstuffs. According to legislation, the analytical methodologies developed for their determination must include multiresidue extractions with high selectivity and sensitivity, as a set of 21 + 14 PAs should be simultaneously monitored. However, the multiresidue extraction of these alkaloids is a difficult task due to the high complexity of food and feed samples. Accordingly, although solid-phase extraction is still the technique most widely used for sample preparation, the QuEChERS method can be a suitable alternative for the simultaneous determination of multiple analytes, providing green extraction and clean-up of samples in a quick and cost-effective way.
  • 3.7K
  • 12 May 2022
Topic Review
Silicate Minerals
Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of the Earth's crust. In mineralogy, silica (silicon dioxide) SiO2 is usually considered a silicate mineral. Silica is found in nature as the mineral quartz, and its polymorphs. On Earth, a wide variety of silicate minerals occur in an even wider range of combinations as a result of the processes that have been forming and re-working the crust for billions of years. These processes include partial melting, crystallization, fractionation, metamorphism, weathering, and diagenesis. Living organisms also contribute to this geologic cycle. For example, a type of plankton known as diatoms construct their exoskeletons ("frustules") from silica extracted from seawater. The frustules of dead diatoms are a major constituent of deep ocean sediment, and of diatomaceous earth.
  • 3.7K
  • 25 Oct 2022
Topic Review Peer Reviewed
The Metaverse in Industry 5.0: A Human-Centric Approach towards Personalized Value Creation
In the context of Industry 5.0, the concept of the Metaverse aligns with the vision of Web 4.0, representing a digital ecosystem where individuals and organizations collaborate in a human-centric approach to create personalized value. This virtual universe connects multiple interconnected worlds, enabling real-time interactions between users and computer-generated environments. By integrating technologies like artificial intelligence (AI), virtual reality (VR), and the Internet of Things (IoT), the Metaverse within Industry 5.0 aims to foster innovation and enhance productivity, efficiency, and overall well-being through tailored and value-driven solutions. Therefore, this entry explores the concept of the Metaverse in the context of Industry 5.0, highlighting its definition, evolution, advantages, and disadvantages. It also discusses the pillars of technological advancement, challenges, and opportunities, including its integration into manufacturing. The entry concludes with a proposal for a conceptual framework for integrating the human-centric Metaverse into manufacturing.
  • 3.7K
  • 05 Sep 2023
Topic Review
Role of Glutathione in Cancer
       Molecular changes in the glutathione antioxidant system and disturbances in its homeostasis have been implicated in tumor initiation, progression, and treatment response with glutathione having both protective and pathogenic roles. Although in healthy cells it is crucial for the removal and detoxification of carcinogens, elevated glutathione levels in tumor cells are associated with tumor progression and increased resistance to chemotherapeutic drugs. Recently, several novel therapies have been developed to target the glutathione antioxidant system in tumors as a means for increased response and decreased drug resistance. In this comprehensive review we explore glutathione functionalities and different therapeutic approaches and their development through experimental and computational approaches. 
  • 3.7K
  • 03 Nov 2020
Topic Review Peer Reviewed
Mediterranean Diet
The Mediterranean diet is a food pattern incorporated into a set of lifestyle practices typical of Greece and Southern Italy in the early 1960s, where adult life expectancy was notably high, while rates of diet-related chronic diseases were low. The Mediterranean diet was described initially by the work of LG Allbaugh, commissioned by the Rockefeller foundation and the Greek government post-WW2 on the Greek island of Crete in 1948. The Mediterranean diet was accepted as Intangible Cultural Heritage of Humanity by UNESCO in 2013. The primary advantages of the Mediterranean diet include health benefits pertinent to cardiovascular, metabolic syndrome, and cognition.
  • 3.7K
  • 13 Apr 2022
Topic Review
Waterway Cargo Transportation
Water transportation is an important part of comprehensive transportation and plays a critical role in a country’s economic development. The world’s cargo transportation is dominated by waterway transportation, and maritime transportation Systems (MTS) are the main part of the waterway transportation system. The flow of goods plays a key role in the economic development of the ports along the route. The sustainable development of maritime transportation, the maritime transportation economy and the environment have great practical significance.
  • 3.7K
  • 21 Nov 2022
Topic Review
Treatment of Petroleum Refinery Wastewater
The treatment of petroleum refinery wastewater (PRWW) is of great interest in industrial wastewater management. This wastewater contains a diverse concentration of contaminants such as oil and grease, petroleum hydrocarbons, phenols, ammonia, and sulfides, as well as other organic and inorganic composites. Refinery wastewater treatment has been attempted through various processes, including physical, biological, chemical, and hybrid methods, which combine two or more techniques. 
  • 3.7K
  • 30 Oct 2023
Topic Review
Polyethylene Terephthalate
Terephthalate (PET) is one of the most significant modern plastics to be invented. PET is a semi-crystalline polymer, with mechanical properties that depend on crystallinity level. This material is considered to be a thermoplastic polyester material, which is now used globally. 
  • 3.7K
  • 08 Feb 2021
Topic Review
TiO2
TiO2 probably plays the most important role in photocatalysis due to its excellent chemical and physical properties. However, the band gap of TiO2 corresponds to the Ultraviolet (UV) region, which is inactive under visible irradiation. At present, TiO2 has become activated in the visible light region by metal and nonmetal doping and the fabrication of composites. Recently, nano-TiO2 has attracted much attention due to its characteristics of larger specific surface area and more exposed surface active sites. nano-TiO2 has been obtained in many morphologies such as ultrathin nanosheets, nanotubes, and hollow nanospheres.
  • 3.7K
  • 29 Oct 2020
Topic Review
Myrica esculenta
Myrica esculenta (Myricaceae) is a popular medicinal plant most commonly found in the sub-tropical Himalayas. It is widely used in folk medicine to treat several ailments such as asthma, cough, chronic bronchitis, ulcers, inflammation, anemia, fever, diarrhea, and ear, nose, and throat disorders. Due to its multidimensional pharmacological and therapeutic effects, it is well recognized in the ayurvedic pharmacopeia.
  • 3.7K
  • 11 Mar 2025
Topic Review
Structure and Function of Microbial Lipases
Lipases or triacylglycerol acyl hydrolases (EC 3.1.1.3) are ubiquitous in all realms of life. In nature, they are mainly characterized by catalyzing the hydrolysis of triglycerides and long-chain partial glycerides, releasing fatty acids, monoglycerides and glycerol. These enzymes constitute a key link in the cellular processes related to the absorption, release and metabolism of fats, since its substrates and derivatives are the most abundant lipids in cells. On the other hand, some lipases have also been attributed functions as defense enzymes or as virulence factors.  The main aspects of the structure–function of microbial lipases, reviewed more extensively in other articles, will be summarized in a general way, but, here, emphasis will be placed on aspects to be discussed in later sections such as their immobilization and applications in reactions of interest in the production of compounds related to APIs.
  • 3.7K
  • 21 Sep 2022
Topic Review
Solanum aethiopicum
Solanum aethiopicum is a very important vegetable for both rural and urban communities in Africa. The crop is rich in both macro-and micronutrients compared with other vegetables and is suitable for ensuring food and nutritional security.
  • 3.7K
  • 18 Jun 2021
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