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Topic Review
Fuzzy VS Bivalent Logic
In this work a comparison is attempted between the Aristotle’s traditional bivalent logic, which dominated for centuries on the human way of thinking, and the relatively recent Zadeh’s fuzzy logic, which has already found many and important applications to almost all sectors of the human activity. It is concluded that, although the enormous progress of science and technology owes a lot to bivalent logic, fuzzy logic which completes and extends it, fits much better to our everyday life situations and to the scientific way of thinking.
  • 2.7K
  • 20 Feb 2021
Topic Review
Pomegranate
Pomegranate (Punica granatum L.) is a fruit that is rich in bioactive compounds that has a biowaste (rind and seed) with the potential to be converted into value-added products in a wide variety of applications. Recent studies have demonstrated the potent antioxidant and antimicrobial effects of using pomegranate rind and seed as natural food additives, thus making researchers incorporate them into bioplastics and edible coatings for food packaging. Additionally, these components have shown great plasticizing effects on packaging materials while extending the shelf life of food through active packaging. Even within skin health applications, pomegranate seed oil and its bioactive compounds have been particularly effective in combating UV-induced stresses on animal skin and in-vitro models, where cells and microorganisms are separated from the whole organism. They have also aided in healing wounds and have shown major anti-inflammatory, analgesic, and anti-bacterial properties.
  • 2.7K
  • 12 Apr 2021
Topic Review
Anthroposophic Medicine
Anthroposophic medicine (or anthroposophical medicine) is a form of alternative medicine based on pseudoscientific and occult notions. Devised in the 1920s by Rudolf Steiner (1861–1925) in conjunction with Ita Wegman (1876–1943), anthroposophical medicine draws on Steiner's spiritual philosophy, which he called anthroposophy. Practitioners employ a variety of treatment techniques based upon anthroposophic precepts, including massage, exercise, counselling, and substances. Many drug preparations used in anthroposophic medicine are ultra-diluted substances, similar to those used in homeopathy. Homeopathic remedies are not medically effective and are generally considered harmless, except when used as a substitute for a scientifically proven and effective cure. In certain European countries, people with cancer are sometimes prescribed remedies made from specially harvested mistletoe, although no evidence of clinical benefit exists. Some anthroposophic doctors oppose childhood vaccination, and this has led to preventable outbreaks of disease. Anthroposophic medicine departs from fundamental biological principles in several respects. For example, Steiner said that the heart is not a pump, but that the blood in a sense pumps itself. Anthroposophic medicine also proposes that patients' past lives may influence their illness and that the course of an illness is subject to karmic destiny. Professor of complementary medicine Edzard Ernst and other physicians and scientists including Simon Singh and David Gorski have characterized anthroposophic medicine as pseudoscientific quackery, with no basis in reason or logic.
  • 2.7K
  • 22 Nov 2022
Topic Review
Sustainable Tourism in the Rural Environment
The multiplicity of forms of tourism and leisure activities is due to many factors. These could be a tourist’s interests, curiosity about the world, cultural or recreational offerings, tourist resources, infrastructure, technical possibilities, or a destination understood as a specific area or type of landscape. One of the more popular forms, which combines some of these factors, is rural tourism.
  • 2.7K
  • 07 Feb 2024
Topic Review
Medicinal Uses of Acacia seyal
Acacia seyal is an important source of gum Arabic. The availability, traditional, medicinal, pharmaceutical, nutritional, and cosmetic applications of gum acacia have pronounced its high economic value and attracted global attention.
  • 2.7K
  • 05 Mar 2024
Topic Review
Characteristics and Hazards of Lead–Zinc Tailings
Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries. They are mainly stockpiled in tailings reservoirs, occupying massive land resources and threatening the health of the environment. 
  • 2.7K
  • 17 Jan 2023
Topic Review
Anomalous Refraction from Anisotropy Media
The transversely isotropic media with a vertical axis of symmetry (VTI media) has been the most popular model for the sedimentary rocks in the interior of the earth. These rocks are usually isotropic within a given layer but strongly anisotropic from layer to layer. Reflection and refraction of acoustic waves between the adjacent rock layers have profound implications in geophysical applications. We discuss some anomalous reflection phenomena of the acoustic wave at the interface between the layered anisotropic rock media. 
  • 2.7K
  • 03 Nov 2020
Topic Review
Consent Decree
A consent decree is an agreement or settlement that resolves a dispute between two parties without admission of guilt (in a criminal case) or liability (in a civil case), and most often refers to such a type of settlement in the United States . The plaintiff and the defendant ask the court to enter into their agreement, and the court maintains supervision over the implementation of the decree in monetary exchanges or restructured interactions between parties. It is similar to and sometimes referred to as an antitrust decree, stipulated judgment, settlement agreements, or consent judgment. Consent decrees are frequently used by federal courts to ensure that businesses and industries adhere to regulatory laws in areas such as antitrust law, employment discrimination, and environmental regulation.
  • 2.7K
  • 07 Nov 2022
Biography
Lloyd Groff Copeman
Lloyd Groff Copeman (December 28, 1881 – July 5, 1956)[1] was an American inventor who devised the first electric stove and the flexible rubber ice cube tray, among other products. He had nearly 700 patents to his name, and he claimed that he could walk into any store and find one of his inventions.[2] Copeman was raised by his Canadian parents on a farm in Hadley Township, Michigan which w
  • 2.7K
  • 20 Dec 2022
Topic Review
Calcium Phosphate Nanocluster Complexes
Calcium phosphate nanocluster complexes comprise a core of amorphous calcium phosphate and a sequestering shell of intrinsically disordered phosphopeptides or phosphoproteins. Solutions containing the nanocluster complexes can be thermodynamically stable or metastable due to a tendency to form a precipitate enriched in calcium phosphate. Theoretical and biophysical studies with native and recombinant phosphopeptides have shown how the radius of the core and the stability of the solution depend on the concentration of the sequestering peptide, its affinity for the calcium phosphate and its concentration in relation to the concentration of the calcium phosphate. The thickness of the sequestering shell depends on the conformation of the peptide on the core surface. A sequestering peptide is a flexible sequence including one or more short linear motifs, each of which usually contains several phosphorylated and other acidic residues.  These are the main binding sites to the core so that a peptide with several binding motifs can forms loops and trains on the core surface. Calcium phosphate nanocluster complexes were first identified as substructures of casein micelles in milk and have been prepared as individual particles from peptides derived from caseins and osteopontin. Stable biofluids containing nanocluster complexes cannot cause soft tissues to become mineralized whereas stable or metastable biofluids containing nanocluster complexes can help to mineralize hard tissues.
  • 2.7K
  • 09 Nov 2020
Topic Review
Olive Oil Production Wastes
The production of high-quality olive oils implies the generation of vast quantities of solid residues and/or wastewaters that may have a great impact on terrestrial and aquatic environments because of their high phytotoxicity. Depending on the techniques used for olive oil production, namely, on the type of horizontal centrifugation (two-phase or three-phase), the process most adopted to separate olive oil from olive paste obtained after malaxation, different by-products are obtained.
  • 2.7K
  • 28 Jun 2021
Topic Review
The Subconjunctival Space of the Eye
The subconjunctival space is the hydrophilic, fluid-filled space between the conjunctiva and the sclera. Additionally, the subconjunctival space has access to all the blood vessels found in the conjunctiva, which can help to further distribute substances throughout the whole eye. The subconjunctival space is located superior to the cornea and optimally located to distribute drugs to several different parts of the eye through minimally invasive means while limiting the development of scar tissue.
  • 2.7K
  • 05 May 2022
Topic Review
3D Geological Property Modeling Methods
Three-dimensional (3D) geological property modeling is used to quantitatively characterize various geological attributes in 3D space based on geostatistics with the help of computer visualization technology, and the results are often stored in grid data. The 3D geological property modeling includes two main components, grid model generation and property interpolation.
  • 2.7K
  • 15 Jun 2022
Topic Review
Bahá'í Faith and Science
A fundamental principle of the Bahá'í Faith is the stated harmony of religion and science. Whilst Bahá'í scripture asserts that true science and true religion can never be in conflict, critics argue that statements by the founders clearly contradict current scientific understanding. `Abdu'l-Bahá, the son of the founder of the religion, stated that "when a religion is opposed to science it becomes mere superstition". He also said that true religion must conform to the conclusions of science. This latter aspect of the principle seems to suggest that the religion must always accept current scientific knowledge as authoritative, but some Bahá'í scholars have suggested that this is not always the case. On some issues, the Bahá'í Faith subordinates the conclusions of current scientific thought to its own teachings, which the religion takes as fundamentally true. This is because, in the Bahá'í understanding the present scientific view is not always correct, neither is truth said to be only limited to what science can explain. Instead, in the Bahá'í view, knowledge must be obtained through the interaction of the insights obtained from revelation from God and through scientific investigation.
  • 2.7K
  • 08 Nov 2022
Topic Review
Förster Resonance Energy Transfer (FRET)-Based Biosensor
Förster resonance energy transfer (FRET)-based biosensors are being fabricated for specific detection of biomolecules or changes in the microenvironment. FRET is a non-radiative transfer of energy from an excited donor fluorophore molecule to a nearby acceptor fluorophore molecule. In a FRET-based biosensor, the donor and acceptor molecules are typically fluorescent proteins or fluorescent nanomaterials such as quantum dots (QDs) or small molecules that are engineered to be in close proximity to each other. When the biomolecule of interest is present, it can cause a change in the distance between the donor and acceptor, leading to a change in the efficiency of FRET and a corresponding change in the fluorescence intensity of the acceptor. This change in fluorescence can be used to detect and quantify the biomolecule of interest.
  • 2.7K
  • 18 Apr 2023
Topic Review
Implication of P38 MAPK in drugs of abuse and stress
p38 mitogen-activated protein kinases (MAPKs) are key signaling molecules in cellular responses to external stresses and regulation of pro-inflammatory cytokines. Some studies have suggested that p38 MAPK in the region of the nucleus accumbens is involved in abnormal behavioral responses induced by drugs of abuse. In this entry, we recapitulate the role of the p38 MAPK in the rewarding effects of drugs of abuse. We also summarize the implication of p38 MAPK in stress, anxiety, and depression. We opine that p38 MAPK activation is more closely associated to stress-induced aversive responses rather than drug effects per se, in particular cocaine. p38 MAPK is only involved in cocaine reward, predominantly when promoted by stress. Downstream substrates of p38 that may contribute to the p38 MAPK associated-behavioral responses are proposed. Finally, we suggest p38 MAPK inhibitors as possible therapeutic interventions against stress-related disorders by potentially increasing resilience against stress and addiction relapse induced by adverse experiences.
  • 2.7K
  • 15 Jul 2020
Topic Review
Zeaxanthin and Photoprotection in Plants
Conversion of sunlight into photochemistry by plants depends on photoprotective processes that allow safe use of sunlight over a broad range of environmental conditions. This entry focuses on the universal use by plants of the photoprotector zeaxanthin that is part of a group of three interconvertible leaf carotenoids collectively known as the xanthophyll cycle. We survey the striking plasticity of this photoprotective process in nature that can be fine-tuned to produce a fit for different environments with various combinations of light, temperature, and other factors.
  • 2.7K
  • 26 Dec 2020
Topic Review
Arsenic Induced Neurotoxicity
Arsenic is a ubiquitous environmental contaminant widely distributed in the surrounding environmental compartments. Exposure to inorganic arsenic is known to cause major neurological effects such as cytotoxicity, chromosomal aberration, damage to cellular DNA and genotoxicity. On the other hand, long-term exposure to arsenic may cause neurobehavioral effects in the juvenile stage, which may have detrimental effects in the later stages of life. Thus, it is important to understand the toxicology and underlying molecular mechanism of arsenic which will help to mitigate its detrimental effects.
  • 2.7K
  • 11 Mar 2022
Topic Review
Volcanology of Mars
Volcanic activity, or volcanism, has played a significant role in the geologic evolution of Mars. Scientists have known since the Mariner 9 mission in 1972 that volcanic features cover large portions of the Martian surface. These features include extensive lava flows, vast lava plains, and the largest known volcanoes in the Solar System. Martian volcanic features range in age from Noachian (>3.7 billion years) to late Amazonian (< 500 million years), indicating that the planet has been volcanically active throughout its history, and some speculate it probably still is so today. Both Earth and Mars are large, differentiated planets built from similar chondritic materials. Many of the same magmatic processes that occur on Earth also occurred on Mars, and both planets are similar enough compositionally that the same names can be applied to their igneous rocks and minerals. Volcanism is a process in which magma from a planet's interior rises through the crust and erupts on the surface. The erupted materials consist of molten rock (lava), hot fragmental debris (tephra or ash), and gases. Volcanism is a principal way that planets release their internal heat. Volcanic eruptions produce distinctive landforms, rock types, and terrains that provide a window on the chemical composition, thermal state, and history of a planet's interior. Magma is a complex, high-temperature mixture of molten silicates, suspended crystals, and dissolved gases. Magma on Mars likely ascends in a similar manner to that on Earth. It rises through the lower crust in diapiric bodies that are less dense than the surrounding material. As the magma rises, it eventually reaches regions of lower density. When the magma density matches that of the host rock, buoyancy is neutralized and the magma body stalls. At this point, it may form a magma chamber and spread out laterally into a network of dikes and sills. Subsequently, the magma may cool and solidify to form intrusive igneous bodies (plutons). Geologists estimate that about 80% of the magma generated on Earth stalls in the crust and never reaches the surface. As magma rises and cools, it undergoes many complex and dynamic compositional changes. Heavier minerals may crystallize and settle to the bottom of the magma chamber. The magma may also assimilate portions of host rock or mix with other batches of magma. These processes alter the composition of the remaining melt, so that any magma reaching the surface may be chemically quite different from its parent melt. Magmas that have been so altered are said to be "evolved" to distinguish them from "primitive" magmas that more closely resemble the composition of their mantle source. (See igneous differentiation and fractional crystallization.) More highly evolved magmas are usually felsic, that is enriched in silica, volatiles, and other light elements compared to iron- and magnesium-rich (mafic) primitive magmas. The degree and extent to which magmas evolve over time is an indication of a planet's level of internal heat and tectonic activity. The Earth's continental crust is made up of evolved granitic rocks that developed through many episodes of magmatic reprocessing. Evolved igneous rocks are much less common on cold, dead bodies such as the Moon. Mars, being intermediate in size between the Earth and the Moon, is thought to be intermediate in its level of magmatic activity. At shallower depths in the crust, the lithostatic pressure on the magma body decreases. The reduced pressure can cause gases (volatiles), such as carbon dioxide and water vapor, to exsolve from the melt into a froth of gas bubbles. The nucleation of bubbles causes a rapid expansion and cooling of the surrounding melt, producing glassy shards that may erupt explosively as tephra (also called pyroclastics). Fine-grained tephra is commonly referred to as volcanic ash. Whether a volcano erupts explosively or effusively as fluid lava depends on the composition of the melt. Felsic magmas of andesitic and rhyolitic composition tend to erupt explosively. They are very viscous (thick and sticky) and rich in dissolved gases. Mafic magmas, on the other hand, are low in volatiles and commonly erupt effusively as basaltic lava flows. However, these are only generalizations. For example, magma that comes into sudden contact with groundwater or surface water may erupt violently in steam explosions called hydromagmatic (phreatomagmatic or phreatic) eruptions. Erupting magmas may also behave differently on planets with different interior compositions, atmospheres, and gravitational fields.
  • 2.7K
  • 23 Nov 2022
Topic Review
Fresh-Cut Fruits
Fresh-cut fruits have been in great demand by consumers owing to the convenience of buying them in shopping centers as ready-to-eat products, and various advantages, such as the fact that they are healthy and fresh products.
  • 2.7K
  • 25 Aug 2022
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