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Topic Review
Acute and Chronic Stress Reactions and HPA Axis
Due to the influence of various stressful stimuli, psychological stress alters the homeostasis of the organism. Consequently, the organism reacts, and the sympathetic-adrenal-medullary (SAM) system and the hypothalamic-pituitary-adrenal (HPA) axis are activated, producing and releasing specific hormones. In addition to acute stress, chronic psychological stress also activates the HPA axis, which causes elevated glucocorticoid levels. 
  • 4.7K
  • 26 Oct 2022
Topic Review
Folklore Studies
Folklore studies, also known as folkloristics, and occasionally tradition studies or folk life studies in the United Kingdom , is the branch of anthropology devoted to the study of folklore. This term, along with its synonyms,[note 1] gained currency in the 1950s to distinguish the academic study of traditional culture from the folklore artifacts themselves. It became established as a field across both Europe and North America, coordinating with Volkskunde (German), folkeminner (Norwegian), and folkminnen (Swedish), among others.
  • 4.7K
  • 09 Nov 2022
Topic Review
Synthesis of Piperazines by C-H Functionalization
Piperazine ranks as the third most common nitrogen heterocycle in drug discovery, and it is the key component of several blockbuster drugs, such as Imatinib (also marketed as Gleevec) or Sildenafil, sold as Viagra. 
  • 4.7K
  • 22 Oct 2021
Topic Review
Autodidacticism
Autodidacticism (also autodidactism) or self-education (also self-learning and self-teaching) is education without the guidance of masters (such as teachers and professors) or institutions (such as schools). Generally, autodidacts are individuals who choose the subject they will study, their studying material, and the studying rhythm and time. Autodidacts may or may not have formal education, and their study may be either a complement or an alternative to formal education. Many notable contributions have been made by autodidacts.
  • 4.7K
  • 14 Oct 2022
Topic Review
Socialist Revolutionary Party
The Socialist Revolutionary Party, or Party of Socialist-Revolutionaries (the SRs or Esers; Russian: Партия социалистов-революционеров, ПСР or эсеры, esery) was a major political party in late Imperial Russia and early Soviet Russia. The SRs were agrarian socialists who obtained a mass following in the years preceding the Russian Revolution by endorsing the overthrow of the Tsar and the redistribution of land to the peasantry. In the elections following the 1905 Revolution, the SRs obtained the majority of the few seats alloted to the peasantry. Following the 1907 coup, the SRs would boycott all subsequent Dumas until the fall of the Tsar in the February Revolution. Controversially, the party leadership would endorse the Russian Provisional Government and participated in multiple coalitions with liberal and moderate socialist parties, while an increasingly vocal minority rejected the Provisional Government's authority and began to align with the Bolsheviks. The pro-government and pro-Soviet factions could not be reconciled and split over the course of the summer of 1917 into the Right and Left SRs respectively. The Left SRs supported the October Revolution and formed a coalition government with the Bolsheviks from November 1917 to July 1918, while the Right SRs denounced what they saw as an illegal coup and boycotted the Congress of Soviets. The SRs obtained a plurality in elections to the Russian Constituent Assembly, with most of the defunct party's seats going to the Right. Citing outdated voter rolls which did not acknowledge the party split and the Assembly's conflicts with the Congress of Soviets, the Bolshevik-Left SR government would dissolve the Constituent Assembly in January 1918. The Left SRs would eventually leave the coalition in July 1918 in protest to the signing of the Treaty of Brest-Litovsk. An abortive uprising by the leadership of the Left SRs resulted in the immediate arrest of most of the party's members. The majority of Left SRs, who opposed the uprising were gradually freed and allowed to keep their government positions, but were unable to organize a new central organ and gradually splintered into multiple pro-Bolshevik parties, all of which would eventually join the Communists by 1921. The Right SRs supported the Whites during the Russian Civil War but were increasingly marginalized by the movement's anti-socialist leadership and ultimately purged. A small Right SR remnant continued to operate in exile from 1923 to 1940 as a member of the Labour and Socialist International.
  • 4.7K
  • 04 Nov 2022
Topic Review
MIMO Antennas for 5G and 6G Wireless Systems
Multiple-input multiple-output (MIMO) antennas are getting more attention in modern high-speed communication systems and play an essential part in the current generation of wireless technology. Portable devices, automobiles, handheld gadgets, smart phones, wireless sensors, radio frequency identification and other applications use MIMO antenna systems. 
  • 4.7K
  • 27 Oct 2022
Topic Review
Single Fiber Endoscope
An endoscope is an imaging device made up of a long and thin tube that can be inserted into the hollow openings of the body to image the inner sections in real time and in a less invasive manner.
  • 4.7K
  • 12 Jan 2021
Topic Review
Water Extraction from the Atmosphere for Arid Zones
The air may be used as a sustainable water supply because it contains over 14,000 km3 of water vapor. There are two methods for extracting water from ambient air. The first approach entails lowering the temperature of humid ambient air to below the dew point. The second method entails sucking water vapor from moist ambient air with a solid adsorbent and a liquid absorbent and then retrieving the water by heating the absorbent and liquefying the evaporated water. Dew water appears to be an easy way to supplement drinking water supplies in a few parts of the world. Small animals and plants are the primary consumers of dew water, as it is necessary for maintaining their activities in a semiarid or dry environment. 
  • 4.7K
  • 12 Jan 2022
Topic Review
Avesta
The Avesta (/əˈvɛstə/) is the primary collection of religious texts of Zoroastrianism, composed in the Avestan language. The Avesta texts fall into several different categories, arranged either by dialect, or by usage. The principal text in the liturgical group is the Yasna, which takes its name from the Yasna ceremony, Zoroastrianism's primary act of worship, and at which the Yasna text is recited. The most important portion of the Yasna texts are the five Gathas, consisting of seventeen hymns attributed to Zoroaster himself. These hymns, together with five other short Old Avestan texts that are also part of the Yasna, are in the Old (or 'Gathic') Avestan language. The remainder of the Yasna's texts are in Younger Avestan, which is not only from a later stage of the language, but also from a different geographic region. Extensions to the Yasna ceremony include the texts of the Vendidad and the Visperad. The Visperad extensions consist mainly of additional invocations of the divinities (yazatas), while the Vendidad is a mixed collection of prose texts mostly dealing with purity laws. Even today, the Vendidad is the only liturgical text that is not recited entirely from memory. Some of the materials of the extended Yasna are from the Yashts, which are hymns to the individual yazatas. Unlike the Yasna, Visperad and Vendidad, the Yashts and the other lesser texts of the Avesta are no longer used liturgically in high rituals. Aside from the Yashts, these other lesser texts include the Nyayesh texts, the Gah texts, the Siroza, and various other fragments. Together, these lesser texts are conventionally called Khordeh Avesta or "Little Avesta" texts. When the first Khordeh Avesta editions were printed in the 19th century, these texts (together with some non-Avestan language prayers) became a book of common prayer for lay people. The term Avesta is from the 9th/10th-century works of Zoroastrian tradition in which the word appears as Zoroastrian Middle Persian abestāg, Book Pahlavi ʾp(y)stʾkʼ. In that context, abestāg texts are portrayed as received knowledge, and are distinguished from the exegetical commentaries (the zand) thereof. The literal meaning of the word abestāg is uncertain; it is generally acknowledged to be a learned borrowing from Avestan, but none of the suggested etymologies have been universally accepted. The widely repeated derivation from *upa-stavaka is from Christian Bartholomae (Altiranisches Wörterbuch, 1904), who interpreted abestāg as a descendant of a hypothetical reconstructed Old Iranian word for "praise-song" (Bartholomae: Lobgesang); but this word is not actually attested in any text.
  • 4.7K
  • 21 Nov 2022
Topic Review
Competition
Competition is an interaction between organisms or species in which both require a resource that is in limited supply (such as food, water, or territory). Competition lowers the fitness of both organisms involved, since the presence of one of the organisms always reduces the amount of the resource available to the other. In the study of community ecology, competition within and between members of a species is an important biological interaction. Competition is one of many interacting biotic and abiotic factors that affect community structure, species diversity, and population dynamics (shifts in a population over time). There are three major mechanisms of competition: interference, exploitation, and apparent competition (in order from most direct to least direct). Interference and exploitation competition can be classed as "real" forms of competition, while apparent competition is not, as organisms do not share a resource, but instead share a predator. Competition among members of the same species is known as intraspecific competition, while competition between individuals of different species is known as interspecific competition. According to the competitive exclusion principle, species less suited to compete for resources must either adapt or die out, although competitive exclusion is rarely found in natural ecosystems. According to evolutionary theory, competition within and between species for resources is important in natural selection. More recently, however, researchers have suggested that evolutionary biodiversity for vertebrates has been driven not by competition between organisms, but by these animals adapting to colonize empty livable space; this is termed the 'Room to Roam' hypothesis.
  • 4.7K
  • 28 Nov 2022
Topic Review
Reason
Reason is a digital audio workstation for creating and editing music and audio developed by Swedish software company Reason Studios (formerly known as Propellerhead Software). Reason emulates a rack of hardware synthesizers, samplers, signal processors, sequencers, and mixers, all of which can be freely interconnected in an arbitrary manner. Reason can be used either as a complete virtual music studio or as a set of virtual instruments to be used with other sequencing software in a fashion that mimics live performance.
  • 4.7K
  • 30 Sep 2022
Topic Review
National Liberal Club
The National Liberal Club (NLC) is a London private members' club, open to both men and women. It was established by William Ewart Gladstone in 1882 to provide club facilities for Liberal Party campaigners among the newly enlarged electorate following the Third Reform Act in 1884, and was envisioned as a more accessible version of a traditional London club. The club's Italianate building on the Embankment of the river Thames is the second-largest club-house built in London. (It was the largest ever at the time, but was superseded by the later Royal Automobile Club building completed in 1911.) Designed by Alfred Waterhouse, it was completed in 1887. Its facilities include a dining room, a bar, function rooms, a billiards room, a smoking room, a library and an outdoor riverside terrace. It is located at Whitehall Place, close to the Houses of Parliament, the Thames Embankment and Trafalgar Square.
  • 4.7K
  • 29 Nov 2022
Topic Review
Stress
Stress, either physiological, biological or psychological, is an organism's response to a stressor such as an environmental condition. Stress is the body's method of reacting to a condition such as a threat, challenge or physical and psychological barrier. There are two hormones that an individual produces during a stressful situation, these are well known as adrenaline and cortisol. Stimuli that alter an organism's environment are responded to by multiple systems in the body. In humans and most mammals, the autonomic nervous system and hypothalamic-pituitary-adrenal (HPA) axis are the two major systems that respond to stress. The sympathoadrenal medullary (SAM) axis may activate the fight-or-flight response through the sympathetic nervous system, which dedicates energy to more relevant bodily systems to acute adaptation to stress, while the parasympathetic nervous system returadrenaliney to homeostasis. The second major physiological stress-response center, the HPA axis, regulates the release of cortisol, which influences many bodily functions such as metabolic, psychological and immunological functions. The SAM and HPA axes are regulated by several brain regions, including the limbic system, prefrontal cortex, amygdala, hypothalamus, and stria terminalis. Through these mechanisms, stress can alter memory functions, reward, immune function, metabolism and susceptibility to diseases. Disease risk is particularly pertinent to mental illnesses, whereby chronic or severe stress remains a common risk factor for several mental illnesses. One system suggests there are five types of stress labeled "acute time-limited stressors", "brief naturalistic stressors", "stressful event sequences", "chronic stressors", and "distant stressors". An acute time-limited stressor involves a short-term challenge, while a brief natural stressor involves an event that is normal but nevertheless challenging. A stressful event sequence is a stressor that occurs, and then continues to yield stress into the immediate future. A chronic stressor involves exposure to a long-term stressor, and a distant stressor is a stressor that is not immediate.
  • 4.7K
  • 28 Oct 2022
Topic Review
Double-sided lapping
Double-sided lapping is an ultra-precision manufacturing process used for fabricating wafers, thin substrates, metal slice parts, etc. to achieve high surface integrity, flatness and parallelism. It can be divided into double-sided lapping with loose abrasives and fixed abrasives.
  • 4.7K
  • 29 Oct 2020
Topic Review
Local Brazilian Goat Breeds
Local Brazilian goat breeds comprise six main groups (Moxotó, Canindé, Repartida, Marota, Graúna, and Azul) and the non descript group derived from crosses.  Local Brazilian goat breeds is a vital genetic resource because they represent the main source of animal's protein to local smallholder communities in the Brazilian semiarid. 
  • 4.7K
  • 20 Oct 2020
Topic Review
Chrysanthemum Morifolium
Chrysanthemum morifolium (also known as florist's daisy and hardy garden mum) is a species of perennial plant from family Asteraceae.
  • 4.7K
  • 02 Nov 2022
Topic Review
Financial Accounting and Sustainability Accounting
A phenomenon in development of accounting knowledge is the generalisation of accounting  principles and concepts from the traditional (financial) domain/context to the sustainability domain/context. This phenomenon draws debates between two schools. Some scholars support the way of simulation, maintaining it is necessary and inevitable for sustainability accounting researchers and practitioners to draw knowledge the financial accounting that has been familiar for them. But some scholars take a critical stance against the simulation, arguing that it is too difficult to apply financial accounting concepts to sustainability practices, for the two accounting contexts are significantly different from each other. But the sustainability accounting application of the materiality concept indicates another side of the phenomenon. That is, sustainability accounting academy should neither give up or discourage the way of generalisation, nor simply and directly simulate the definitions and practices of financial accounting concepts. 
  • 4.7K
  • 29 Oct 2020
Topic Review
Mnemonic
A mnemonic (/nəˈmɒnɪk/) device, or memory device, is any learning technique that aids information retention or retrieval (remembering) in the human memory for better understanding. Mnemonics make use of elaborative encoding, retrieval cues, and imagery as specific tools to encode information in a way that allows for efficient storage and retrieval. Mnemonics aid original information in becoming associated with something more accessible or meaningful—which, in turn, provides better retention of the information. Commonly encountered mnemonics are often used for lists and in auditory form, such as short poems, acronyms, initialisms, or memorable phrases, but mnemonics can also be used for other types of information and in visual or kinesthetic forms. Their use is based on the observation that the human mind more easily remembers spatial, personal, surprising, physical, sexual, humorous, or otherwise "relatable" information, rather than more abstract or impersonal forms of information. The word "mnemonic" is derived from the Ancient Greek word μνημονικός (mnēmonikos), meaning 'of memory' or 'relating to memory' and is related to Mnemosyne ("remembrance"), the name of the goddess of memory in Greek mythology. Both of these words are derived from μνήμη (mnēmē), 'remembrance, memory'. Mnemonics in antiquity were most often considered in the context of what is today known as the art of memory. Ancient Greeks and Romans distinguished between two types of memory: the "natural" memory and the "artificial" memory. The former is inborn, and is the one that everyone uses instinctively. The latter in contrast has to be trained and developed through the learning and practice of a variety of mnemonic techniques. Mnemonic systems are techniques or strategies consciously used to improve memory. They help use information already stored in long-term memory to make memorization an easier task.
  • 4.7K
  • 21 Oct 2022
Topic Review
Hazrat Ishaan (Title)
Hazrat Ishaan (Persian: حضرت ایشان‎; also transliterated as Hazrat Ishaan and Hasrat Eshan) is a saintly title held by the Imamiya-Ridhawiya-Qadiriya-Naqshbandiyya Emir of Prophet Muhamamd´s Family, who simultaneously is believed to represent the 12th Imam as the hereditary spiritual and political supreme leader of the Naqshbandi Sufi Order. The title Hazrat Ishaans is used since the 16th century beginning with the advent of the saint and aristocrat Khwaja Khawand Mahmud. The Hazrat Ishaans claim descent from Muhammad, last prophet of Islam, through Hasan al Askari, Sayyid Abdul Qadir Gilani and Bahauddin Naqshband.
  • 4.7K
  • 30 Jun 2024
Topic Review
Contraindications to Initiation of ECMO
Extracorporeal membrane oxygenation (ECMO) is increasingly used for acute respiratory failure with few absolute but many relative contraindications. The contraindications to the initiation of ECMO therapy are not uniformly agreed upon, and each center, as well as each provider involved in the indication for the initiation of ECMO, weights them differently. Whereas absolute contraindications immediately discourage ECMO therapy, relative contraindications should trigger a very thorough consideration of this option. Although relative contraindications should not per se exclude patients from a life-saving procedure such as ECMO, their concurrence may lead to the decision to forgo this procedure. When relative contraindications add up, they might accumulate to a point where they (should) be considered absolute contraindications.
  • 4.7K
  • 16 Sep 2021
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