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Topic Review
Failure Modes of the Electric Motors
The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes. Electric machines mostly fail due to mechanical problems and bearing damage is the main source of this. The bearings can be damaged by mechanical, electrical, and thermal stresses. Among all stresses, the researcher should give special attention to the electrical one, which is bearing current and shaft voltage.
  • 3.5K
  • 21 Jun 2023
Topic Review
Creatine in Post-Viral Fatigue Syndrome
Post-viral fatigue syndrome (PVFS) is a widespread chronic neurological disease with no definite etiological factor(s), no actual diagnostic test, and no approved pharmacological treatment, therapy, or cure. 
  • 3.5K
  • 10 Feb 2021
Topic Review
Social Media Addiction
Social media addiction is a kind of psycho-social issues in the context of the increasing use of social media. What can be effective in reducing social media addiction, which causes social and economic problems, is an important issue today. It was determined that satisfaction with life had a mediation role in the effect of self-esteem and education level on social media addiction. Self-esteem and education level improved satisfaction with life, and increased satisfaction with life resulted in less social media addiction. These results demonstrate the importance of implementing specific practices based on self-esteem and education, especially for vulnerable groups, to minimize the problems that may arise with the excessive use of digital apps and social media.
  • 3.5K
  • 29 Sep 2021
Topic Review
Sulfur Compounds in the Whisky Production Process
Whisky is produced through malting, mashing, fermentation, distillation, and maturation. During these processes, several sulfur compounds are formed and/or reduced in quantity. To date, alkyl sulfides, thiols, methylthio group compounds, thiophenes, thiazoles, dithiapentane derivatives, and furfuryl compounds have been detected in the final spirit. Distillers might be able to control quality better if the pathways and contributions of these chemicals were known; currently, however, only some of them have been identified, while others remain to be revealed.
  • 3.5K
  • 11 Mar 2022
Topic Review
Train Delays and Punctuality
Indicators of expected quality of service in public contracts are often based on some kind of “punctuality”, usually defined in terms of the percentage of trains arrived “on time”, i.e., within a given delay, at stations, which can mean either at their final destination or also at intermediate “significant” stops. Of course, this requires defining in which circumstances an arrival is counted as a delay. Passengers, however, tend to use the word “punctuality” with a more general meaning, mostly as a synonym for expected delay at their own destination, and especially in case of commuters are much less tolerant of even smaller delays than train operators would normally allow. Overall, punctuality is claimed to be one of the most important quality indicators both in railways and, widening the discourse, in schedule-based bus operation, and is crucial for customer satisfaction. 
  • 3.5K
  • 26 May 2023
Topic Review
Civilian Casualties
Civilian casualties occur when civilians are killed or injured by non-civilians, mostly law enforcement officers, military personnel, rebel group forces, or terrorists. Under the law of war, it refers to civilians who perish or suffer wounds as a result of wartime acts. The term is generally applied to situations in which violence is committed in pursuit of political goals. During periods of armed conflict, there are structures, actors, and processes at a number of levels that affect the likelihood of violence against civilians. The term "civilian casualties" is sometimes used in non-military situations, for example to distinguish casualties to police vs. to criminals such as bank robbers.
  • 3.5K
  • 20 Nov 2022
Topic Review
β-Ionone
β-Ionone is a natural plant volatile compound, and it is the 9,10 and 9′,10′ cleavage product of β-carotene by the carotenoid cleavage dioxygenase. β-Ionone is widely distributed in flowers, fruits, and vegetables. β-Ionone and other apocarotenoids comprise flavors, aromas, pigments, growth regulators, and defense compounds; serve as ecological cues; have roles as insect attractants or repellants, and have antibacterial and fungicidal properties. In recent years, β-ionone has also received increased attention from the biomedical community for its potential as an anticancer treatment and for other human health benefits. However, β-ionone is typically produced at relatively low levels in plants. Thus, expressing plant biosynthetic pathway genes in microbial hosts and engineering the metabolic pathway/host to increase metabolite production is an appealing alternative.
  • 3.5K
  • 26 Apr 2021
Biography
Ravi Shankar
Ravi Shankar (born 13 May 1956) is an Indian yoga guru,[1] a spiritual leader. He is frequently referred to as "Sri Sri" (honorific), Guru ji, or Gurudev.[2] From around the mid 1970s, he worked as an apprentice under Mahesh Yogi, the founder of Transcendental Meditation. In 1981, he split from the Transcendental Meditation (TM) and founded the Art of Living Foundation.[3] Ravi Shankar was bo
  • 3.5K
  • 30 Nov 2022
Topic Review
East China Sea Basin
The back-arc East China Sea Basin lies on extended continental crust at the leading edge of the Eurasian plate. Geology over the East China Sea Shelf Basin have been studied bits and pieces by various researchers over the past 20 years. This work is intended to provide a full review of the tectonic evolution over the East China Sea Basin. 
  • 3.5K
  • 30 Oct 2020
Topic Review
Anti-Platelet Properties of Apple Cider
Fermented alcoholic beverages, including apple cider, have been shown to provide several functional properties with health benefits when consumed in moderation. The beneficial functional properties of apple cider have been attributed to the plethora of its bio-functional compounds, including its phenolic content and anti-inflammatory and anti-platelet polar lipids (PL). More specifically, fermentation of apple juices from different apple varieties produced apple ciders containing PL and phenolic bioactives with anti-inflammatory and anti-platelet properties against human platelet aggregation induced by the inflammatory and thrombotic mediator, platelet activating factor (PAF), but also by a classic platelet agonist, adenosine diphosphate (ADP). Similar outcomes were also observed in the wastes, apple cider by-products (apple pomace), from all these apple cider production procedures.
  • 3.5K
  • 02 Sep 2021
Topic Review
Mosaic Evolution
Mosaic evolution (or modular evolution) is the concept, mainly from palaeontology, that evolutionary change takes place in some body parts or systems without simultaneous changes in other parts. Another definition is the "evolution of characters at various rates both within and between species".408 Its place in evolutionary theory comes under long-term trends or macroevolution.
  • 3.5K
  • 28 Sep 2022
Topic Review
Forbes Family
The Forbes family is a wealthy extended American family long prominent in Boston, Massachusetts . The family's fortune originates from trading between North America and China in the 19th century plus other investments in the same period. The name descends from Scottish immigrants, and can be traced back to Sir John de Forbes in Scotland in the 12th century. Family members include businessman John Murray Forbes (1813 – 1898), part of the first generation who accumulated wealth, and politician John Forbes Kerry (born 1943).
  • 3.5K
  • 01 Dec 2022
Topic Review
Imagined Interaction
Imagined interactions (IIs) are a type of social cognition and mental imagery grounded in symbolic interactionism in which individuals imagine conversations with significant others for a variety of purposes (Honeycutt, 2003; 2015). The research program was founded and created by James M. Honeycutt in 1987, who was designated an LSU Distinguished Professor in 2012. He provided a keynote address at the American Association for the Study of Mental Imagery at Yale University in 1987 discussing the functions of imagined interactions and mental imagery. In 2006, Honeycutt's book, "Imagined Interactions: Daydreaming about Communication" (2003), was awarded Distinguished Book of the Year by the National Communication Association for developing the original formulations and the II construct which has provided a beneficial mechanism for operationalizing the study of intrapersonal communication, social cognition, daydreaming, and mental imagery. Furthermore, imagined interactions can be used in sports imagery as athletes "imagine" positive outcomes of their executions on specific plays or formations (Keaton, Gearhart, & Honeycutt, 2014).
  • 3.5K
  • 15 Nov 2022
Biography
Bill Donohue
William Anthony Donohue (born July 18, 1947) is an American Roman Catholic. He has been president of the Catholic League in the United States since 1993.[1] Donohue was born in the borough of Manhattan in New York City , New York. He began his teaching career in the 1970s working at St. Lucy's School in Spanish Harlem. In 1977, he took a teaching position at La Roche College in McCandless, Pe
  • 3.5K
  • 30 Dec 2022
Topic Review
Satellite Constellations
The New Space Economy encourages constellations of satellites that are being proposed in large numbers by private companies. They will provide communication, enable global monitoring of Earth, and enhance space observation. Mostly enabled by technology miniaturization, satellite constellations require a coordinated effort to face the technological limits in spacecraft operations and space traffic. In this Topic Review, we provide a survey of the upcoming satellite constellations and an overview of future challenges to be faced.
  • 3.5K
  • 27 Oct 2020
Topic Review
Homo-Oligomeric Proteins
Protein homo-oligomerization is a very common phenomenon, and approximately half of proteins form homo-oligomeric assemblies composed of identical subunits. Many proteins have a natural tendency to self-associate into homo-oligomeric protein complexes, also termed homomers, which are composed of two or more identical subunits. According to the estimation, 30–50% of all proteins oligomerize. In addition, analysis of protein crystal structures demonstrated that roughly 45% of eukaryotic proteins and 60% of prokaryotic proteins that are deposited as single polypeptide chains also exist in a form of homo-oligomeric complex. 
  • 3.5K
  • 23 Sep 2021
Topic Review
Swyer Syndrome
Swyer syndrome is a condition that affects sexual development. Sexual development is usually determined by an individual's chromosomes; however, in Swyer syndrome, sexual development does not match the affected individual's chromosomal makeup.  
  • 3.5K
  • 23 Dec 2020
Topic Review
Achievement Orientation
Achievement orientation refers to how an individual interprets and reacts to tasks, resulting in different patterns of cognition, affect and behavior. Developed within a social-cognitive framework, achievement goal theory proposes that students’ motivation and achievement-related behaviors can be understood by considering the reasons or purposes they adopt while engaged in academic work. The focus is on how students think about themselves, their tasks, and their performance. In general, an individual can be said to be “mastery” or “performance” oriented, based on whether one's goal is to develop one's ability or to demonstrate one's ability, respectively. Achievement orientations have been shown to be associated with individuals’ academic achievement, adjustment, and well-being.
  • 3.5K
  • 13 Oct 2022
Topic Review
Astronomy
Astronomy (from grc ἀστρονομία (Script error: No such module "Ancient Greek".) 'science that studies the laws of the stars') is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional astronomy is often said to be the same as astrophysics. Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. These two fields complement each other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results. Astronomy is one of the few sciences in which amateurs play an active role. This is especially true for the discovery and observation of transient events. Amateur astronomers have helped with many important discoveries, such as finding new comets.
  • 3.5K
  • 05 Dec 2022
Topic Review
Small Conductance Ca2+-Activated K+ Channels
The Ca2+-activated K+ (KCa) channels can be grouped into three categories: large (BK, KCa 1.1), intermediate (SK4/IK/KCa3.1), and small (SK1, SK2, SK3/KCa2.1, KCa2.2, KCa2.3) conductance ion channels. They possess a unique feature to connect intracellular Ca2+ signals to cell excitability. KCa channels are widely expressed in the neurons of the central nervous system (CNS), where they are involved in the control of excitability, synaptic signal transduction, and firing pattern. 
  • 3.5K
  • 14 Jan 2021
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