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Topic Review

The North American wolf Canis lupus pambasileus is a subspecies of gray wolf that is called the Yukon wolf in Canada and the Alaskan Interior wolf in the United States. It is native to the Alaska Interior and Yukon, save for the tundra region of the Arctic Coast.

2.6K
08 Oct 2022

Biography

Masoud Alimohammadi

Masoud Alimohammadi (Persian: مسعود علی‌محمدی‎, 24 August 1959 – 12 January 2010) was an Iranian quantum field theorist and elementary-particle physicist and a distinguished professor of elementary particle physics at the University of Tehran's Department of Physics.[1] He was assassinated on the morning of 12 January 2010 (some minutes before 8 o'clock, local time) in front o

2.6K
16 Nov 2022

Topic Review

In biology, tissue is a biological organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues. The English word "tissue" derives from the French word "tissu", the past participle of the verb tisser, "to weave". The study of tissues is known as histology or, in connection with disease, as histopathology. Xavier Bichat is considered as the "Father of Histology". Plant histology is studied in both plant anatomy and physiology. The classical tools for studying tissues are the paraffin block in which tissue is embedded and then sectioned, the histological stain, and the optical microscope. Developments in electron microscopy, immunofluorescence, and the use of frozen tissue-sections have enhanced the detail that can be observed in tissues. With these tools, the classical appearances of tissues can be examined in health and disease, enabling considerable refinement of medical diagnosis and prognosis.

2.6K
03 Jan 2023

Biography

Pyotr Yakovlevich Ufimtsev (Russian: Пётр Я́ковлевич Уфи́мцев) (born 1931 in Ust-Charyshskaya Pristan, West Siberian Krai, now Altai Krai) is a Soviet/Russian physicist and mathematician, considered the seminal force behind modern stealth aircraft technology. In the 1960s he began developing equations for predicting the reflection of electromagnetic waves from simple two-di

2.6K
30 Dec 2022

Topic Review

The caracal (Caracal caracal) /ˈkærəkæl/ is a medium-sized wild cat native to Africa, the Middle East, Central Asia, and arid areas of Pakistan and northwestern India . It is characterised by a robust build, long legs, a short face, long tufted ears, and long canine teeth. Its coat is uniformly reddish tan or sandy, while the ventral parts are lighter with small reddish markings. It reaches 40–50 cm (16–20 in) at the shoulder and weighs 8–19 kg (18–42 lb). It was first scientifically described by German naturalist Johann Christian Daniel von Schreber in 1776. Three subspecies are recognised. Typically nocturnal, the caracal is highly secretive and difficult to observe. It is territorial, and lives mainly alone or in pairs. The caracal is a carnivore that typically preys upon small mammals, birds, and rodents. It can leap higher than 4 metres (12 ft) and catch birds in midair. It stalks its prey until it is within 5 m (16 ft) of it, after which it runs it down and kills its prey with a bite to the throat or to the back of the neck. Both sexes become sexually mature by the time they are one year old and breed throughout the year. Gestation lasts between two and three months, resulting in a litter of one to six kittens. Juveniles leave their mothers at the age of nine to ten months, though a few females stay back with their mothers. The average lifespan of captive caracals is nearly 16 years. Caracals were tamed and used for coursing in India, Persia and Egypt.

2.6K
24 Oct 2022

Topic Review

Wheat Gluten (Food)

Wheat gluten is a food made from gluten, the main protein of wheat. It is made by washing wheat flour dough with water until all the starch granules have been removed, leaving the sticky insoluble gluten as an elastic mass, which is then cooked before being eaten. The name seitan (UK: /ˈseɪtæn/, US: /-tɑːn/; Japanese: セイタン) is now widely used in vegetarian, vegan, wholefood and macrobiotic circles for wheat gluten dishes. It is also known as miàn jīn (Chinese: 面筋), milgogi (Korean: 밀고기), wheat meat, gluten meat, vital wheat gluten or simply gluten. Wheat gluten is an alternative to soybean-based foods such as tofu, which are sometimes used as meat analogue. Some types of wheat gluten have a chewy or stringy texture that resembles meat more than other substitutes. Wheat gluten is often used instead of meat in Asian, vegetarian, Buddhist, and macrobiotic cuisines. Mock duck is a common use for wheat. Wheat gluten first appeared during the 6th century as an ingredient for Chinese noodles. It has historically been popular in the cuisines of China, Japan and other East and Southeast Asian nations. In Asia, it is commonly found on the menus of restaurants catering primarily to Buddhist customers who do not eat meat.

2.5K
12 Dec 2022

Biography

Katherine Freese

Katherine Freese is a theoretical astrophysicist and George Eugene Uhlenbeck Collegiate Professor of Physics at the University of Michigan in Ann Arbor. Starting in September 2014, she assumed the position of Director of Nordita, the Nordic Institute for Theoretical Physics, in Stockholm, and holds a position as Visiting Professor of Physics at Stockholm University. She is known for her work in

2.5K
06 Dec 2022

Biography

Herbert Grove Dorsey

Herbert Grove Dorsey (April 24, 1876 – 1961) was an American engineer, inventor and physicist. He was principal engineer of the United States Coast and Geodetic Survey Radiosonic Laboratory in the 1930s. He invented the first practical fathometer, a water depth measuring instrument for ships. Dorsey was born in Kirkersville, Ohio on April 24, 1876. His parents were Edwin Jackson and Mary

2.5K
20 Dec 2022

Biography

Devaneya Pavanar

Devaneya Pavanar (Tamil: ஞா. தேவநேயப் பாவாணர்; Ñānamuttaṉ Tēvanēya Pāvāṇar; also known as G. Devaneyan, Ñanamuttan Tevaneyan; 7 February 1902–15 January 1981) was a prominent Indian Tamil author who wrote over 35 books. Additionally, he was a staunch proponent of the "Pure Tamil movement" and initiated the Etymological Dictionary Project primarily t

2.5K
29 Dec 2022

Topic Review

Periadenitis Mucosa Necrotica Recurrens

Aphthous stomatitis, or recurrent aphthous stomatitis (RAS), is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals. The informal term canker sore is also used, mainly in North America, although it may also refer to other types of mouth ulcers. The cause is not completely understood but involves a T cell-mediated immune response triggered by a variety of factors which may include nutritional deficiencies, local trauma, stress, hormonal influences, allergies, genetic predisposition, certain foods, dehydration, some food additives, or some hygienic chemical additives like SDS (common in toothpaste). These ulcers occur periodically and heal completely between attacks. In the majority of cases, the individual ulcers last about 7–10 days, and ulceration episodes occur 3–6 times per year. Most appear on the non-keratinizing epithelial surfaces in the mouth – i.e. anywhere except the attached gingiva, the hard palate and the dorsum of the tongue – although the more severe forms, which are less common, may also involve keratinizing epithelial surfaces. Symptoms range from a minor nuisance to interfering with eating and drinking. The severe forms may be debilitating, even causing weight loss due to malnutrition. The condition is very common, affecting about 20% of the general population to some degree. The onset is often during childhood or adolescence, and the condition usually lasts for several years before gradually disappearing. There is no cure, and treatments such as corticosteroids aim to manage pain, reduce healing time and reduce the frequency of episodes of ulceration.

2.5K
01 Dec 2022

Topic Review

Cyanobacteria (blue-green microalgae) are ubiquitous, Gram-negative photoautotrophic prokaryotes. They are considered as one of the most efficient sources of bioactive secondary metabolites.

2.5K
15 Jan 2021

Biography

Philipp, Prince of Eulenburg and Hertefeld, Count of Sandels (German: Philipp Friedrich Karl Alexander Botho Fürst zu Eulenburg und Hertefeld Graf von Sandels; 12 February 1847 – 17 September 1921) was a diplomat and composer of Imperial Germany who achieved considerable influence as the closest friend of Wilhelm II. He was the central member of the so-called Liebenberg Circle, a group of art

2.5K
24 Nov 2022

Topic Review

Paeonia Suffruticosa

Paeonia suffruticosa is a name used for a group of culture varieties of tree peonies that are the result of hybridisation with species exclusively belonging to the subsection Vaginatae. The common name used in China is mǔdān (Chinese: 牡丹). Plants belonging to this group have been cultivated for millennia in China, initially only as a source of traditional Chinese medicine particularly the skin of its roots (牡丹皮; mǔdān pí). Already early on the plant was also cultivated for its ornamental value, and it is highly revered in Chinese culture.

2.5K
30 Nov 2022

Biography

Max Abraham (German: [ˈaːbʀaham]; 26 March 1875 – 16 November 1922) was a Germany physicist known for his work on electromagnetism and his opposition to the theory of relativity. Abraham was born in Danzig, Imperial Germany (now Gdańsk in Poland ) to a family of Jewish merchants. His father was Moritz Abraham and his mother was Selma Moritzsohn. Attending the University of Berlin, he st

2.5K
25 Nov 2022

Topic Review

Enterococci derived from an ancestor that was a commensal of aquatic life forms, when animals first became terrestrial. To cope with the stresses of the new terrestrial habitat, enterococci evolved to be tough bugs, resistant to a wide range of environmental and host factors. That made them extremely successful not only in adapting to the new way of life of their hosts, but also in colonizing other non-animal, and even inanimate, environments - such as feeds and foods. The plasticity of the enterococcal genome, together with their notable ability to trade virulence and antibiotic resistance, have enabled them to also become notable opportunistic, multi-resistant pathogens and act as reservoirs of pathogenicity and resistance determinants.

2.5K
31 Aug 2020

Biography

Sheldon Lee Glashow

Sheldon Lee Glashow (US: /ˈɡlæʃoʊ/,[1][2] UK: /ˈɡlæʃaʊ/;[3] born December 5, 1932) is a Nobel Prize-winning United States theoretical physicist. He is the Metcalf Professor of Mathematics and Physics at Boston University and Eugene Higgins Professor of Physics, Emeritus, at Harvard University, and is a member of the Board of Sponsors for the Bulletin of the Atomic Scientists. Sheldo

2.5K
24 Nov 2022

Biography

Michael James Whale

Michael James Whale (born 13 May 1951), known professionally as James Whale, is an English radio personality, television presenter, podcast host and author. He gained initial prominence in the 1980s as the host of The James Whale Radio Show on Radio Aire in Leeds, which was simulcast on national television. From 1995 to 2008, Whale hosted a night time radio show on talkSPORT, followed by stints

2.5K
15 Dec 2022

Topic Review

GeneCards is a database of human genes that provides genomic, proteomic, transcriptomic, genetic and functional information on all known and predicted human genes. It is being developed and maintained by the Crown Human Genome Center at the Weizmann Institute of Science. The database aims at providing a quick overview of the current available biomedical information about the searched gene, including the human genes, the encoded proteins, and the relevant diseases. The GeneCards database provides access to free Web resources about more than 7000 all known human genes that integrated from >90 data resources, such as HGNC, Ensembl, and NCBI. The core gene list is based on approved gene symbols published by the HUGO Gene Nomenclature Committee (HGNC). The information is carefully gathered and selected from these databases by its engine. If the search does not return any results, this database will give several suggestions to help users accomplish their search depending on the type of query and offer direct links to other databases’ search engine. Over time, the GeneCards database has developed a suite of tools (GeneDecks, GeneLoc, GeneALaCart) that has more specialised capability. Since 1998, the GeneCards database has been widely used by bioinformatics, genomics and medical communities for more than 15 years.

2.5K
17 Oct 2022

Topic Review

Emmer wheat or hulled wheat is a type of awned wheat. Emmer is a tetraploid (2n = 4x = 28 chromosomes). The domesticated types are Triticum turgidum subsp. dicoccum and Triticum turgidum conv. durum. The wild plant is called Triticum turgidum subsp. dicoccoides. The principal difference between the wild and the domestic is that the ripened seed head of the wild plant shatters and scatters the seed onto the ground, while in the domesticated emmer the seed head remains intact, thus making it easier for humans to harvest the grain. Along with einkorn wheat, emmer was one of the first crops domesticated in the Near East. It was widely cultivated in the ancient world, but is now a relict crop in mountainous regions of Europe and Asia. Emmer is considered a type of farro food especially in Italy.

2.5K
01 Dec 2022

Biography

Sergey Vyacheslavovich Savelyev

Sergey Vyacheslavovich Savelyev (Russian: Серге́й Вячесла́вович Саве́льев; born March 7, 1959)[1] is a Russian doctor of biological Sciences, Professor,[2] author of the idea of cerebral sorting. Born in Moscow, he graduated from the Biology and Chemistry Faculty of MGZPI (now the Sholokhov Moscow State University for Humanities), worked at the Brain Institute of

2.5K
06 Dec 2022

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