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Topic Review
Borealopelta
Borealopelta (meaning "Northern shield") is a genus of nodosaurid ankylosaur from the Early Cretaceous of Alberta, Canada . It contains a single species, B. markmitchelli, named in 2017 by Caleb Brown and colleagues from a well-preserved specimen known as the Suncor nodosaur. Discovered at an oil sands mine north of Fort McMurray, Alberta, that is owned by the Suncor Energy company, the specimen is remarkable for being among the best preserved dinosaur fossils of its size ever found. It preserved not only the armor (osteoderms) in their life positions, but also remains of their keratin sheaths and overlying skin. Melanosomes were also found that indicate a countershaded reddish skin tone.
  • 1.9K
  • 21 Oct 2022
Topic Review
Lactobacillus Rhamnosus
Lacticaseibacillus rhamnosus (previously: Lactobacillus rhamnosus) is a bacterium that originally was considered to be a subspecies of L. casei, but genetic research found it to be a separate species in the L. casei clade, which also includes L. paracasei and L. zeae. It is a short Gram-positive homofermentative facultative anaerobic non-spore-forming rod that often appears in chains. Some strains of L. rhamnosus bacteria are being used as probiotics, and are particularly useful in treating infections of the female urogenital tract, most particularly very difficult to treat cases of bacterial vaginosis (or "BV"). The species Lacticaseibacillus rhamnosus and Limosilactobacillus reuteri are commonly found in the healthy female genito-urinary tract and are helpful to regain control of dysbiotic bacterial overgrowth during an active infection. L. rhamnosus sometimes is used in dairy products such as fermented milk and as non-starter-lactic acid bacterium (NSLAB) in long-ripened cheese. While frequently considered a beneficial organism, L. rhamnosus may not be as beneficial to certain subsets of the population; in rare circumstances, especially those primarily involving weakened immune system or infants, it may cause endocarditis. Despite the rare infections caused by L. rhamnosus, the species is included in the list of bacterial species with qualified presumed safety (QPS) status of the European Food Safety Agency.
  • 1.9K
  • 08 Nov 2022
Biography
Charlotte Bühler
Charlotte Bühler (née Malachowski, December 20, 1893 – February 3, 1974) was a German-American developmental psychologist. Bühler was born Charlotte Berta Malachowski in Berlin, the elder of two children of Jewish government architect Hermann Malachowski, and his wife Rose (née Kristeller). After graduating from high school in 1913, Charlotte Malachowski studied natural sciences and hu
  • 1.9K
  • 02 Dec 2022
Topic Review
Bioenergy
Bioenergy is energy made from biomass or biofuel. Biomass is any organic material which has absorbed sunlight and stored it in the form of chemical energy. Examples are wood, energy crops and waste from forests, yards, or farms. Since biomass technically can be used as a fuel directly (e.g. wood logs), some people use the terms biomass and biofuel interchangeably. More often than not, the word biomass simply denotes the biological raw material the fuel is made of. The word biofuel is usually reserved for liquid or gaseous fuels, used for transportation. The U.S. Energy Information Administration (EIA) follows this naming practice. The IPCC (Intergovernmental Panel on Climate Change) defines bioenergy as a renewable form of energy. Researchers have disputed that the use of forest biomass for energy is carbon neutral.
  • 1.9K
  • 29 Nov 2022
Biography
Felix Auerbach
Felix Auerbach (12 November 1856 – 26 February 1933) was a German physicist. Auerbach was born in Breslau (today Wrocław) on 12 November 1856. His father, Leopold Auerbach, was a respected physician and professor of medicine at the University of Breslau. His mother was Arabella Auerbach, née Hess. From her, he acquired the talent and love for music that accompanied him throughout his life
  • 1.9K
  • 20 Dec 2022
Topic Review
Species Affected by Poaching
Species affected by poaching refers both to the effects of illegal hunting and fishing or capturing of wild animals on certain species, and, in a recent usage, the illegal harvesting of wild plant species. The article provides an overview of species currently endangered or impaired by poaching in the Americas, sub-Saharan Africa, and South-East Asia.
  • 1.9K
  • 20 Oct 2022
Topic Review
Kostmann Syndrome
Kostmann syndrome is a group of diseases that affect myelopoiesis, causing a congenital form of neutropenia (severe congenital neutropenia [SCN]), usually without other physical malformations. SCN manifests in infancy with life-threatening bacterial infections. Most cases of SCN respond to treatment with granulocyte colony-stimulating factor (filgrastim), which increases the neutrophil count and decreases the severity and frequency of infections. Although this treatment has significantly improved survival, people with SCN are at risk of long-term complications such as hematopoietic clonal disorders (myelodysplastic syndrome, acute myeloid leukemia). Kostmann disease (SCN3), the initial subtype recognized, was clinically described in 1956. This type has an autosomal recessive inheritance pattern, whereas the most common subtype of Kostmann syndrome, SCN1, shows autosomal dominant inheritance.
  • 1.9K
  • 25 Oct 2022
Biography
Abraham Alikhanov
Abraham Isahakovich Alikhanov (Alikhanian, Armenian: Աբրահամ Իսահակի Ալիխանյան) (February 20, 1904 – December 8, 1970) was a Soviet Armenian physicist, academic of the USSR Academy of Sciences. He was one of the leaders of the Soviet atomic project.[1][2] In 1945, he founded and became director of the Institute for Theoretical and Experimental Physics. He is known as one
  • 1.9K
  • 29 Dec 2022
Biography
Douglas Mawson
Sir Douglas Mawson OBE FRS[1] FAA (5 May 1882 – 14 October 1958) was an Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during the Heroic Age of Antarctic Exploration. Mawson was born in England and came to Australia as an infant. He completed degrees in mining engineering and geo
  • 1.9K
  • 30 Nov 2022
Topic Review
Ischemia
Ischemia or ischaemia is a restriction in blood supply to any tissues, muscle group, or organ of the body, causing a shortage of oxygen that is needed for cellular metabolism (to keep tissue alive). Ischemia is generally caused by problems with blood vessels, with resultant damage to or dysfunction of tissue i.e. hypoxia and microvascular dysfunction. It also means local hypoxia in a given part of a body sometimes resulting from constriction (such as vasoconstriction, thrombosis or embolism). Ischemia comprises not only insufficiency of oxygen, but also reduced availability of nutrients and inadequate removal of metabolic wastes. Ischemia can be partial (poor perfusion) or total blockage. The inadequate delivery of oxygenated blood to the organs must be resolved either by treating the cause of the inadequate delivery or reducing the oxygen demand of the system that needs it. For example, patients with myocardial ischemia have a decreased blood flow to the heart and are prescribed with medications that reduce chronotrophy and ionotrophy to meet the new level of blood delivery supplied by the stenosed so that it is adequate.
  • 1.9K
  • 14 Nov 2022
Biography
Rush Holt Jr.
Rush Dew Holt Jr. (born October 15, 1948) is an American scientist and politician. He was the U.S. Representative for New Jersey12 New Jersey's 12th congressional district Holt sought the Democratic nomination for U.S. Senate in the 2013 special primary election to fill the seat of U.S. Senator Frank Lautenberg, who died in office on June 3, 2013. He lost the nomination to Newark Mayor Cory Boo
  • 1.9K
  • 07 Dec 2022
Topic Review
Interleukine-17's Modulate Neurogenesis and Behavior in PTSD Mice
Post-traumatic stress disorder (PTSD) is a psychiatric disorder accompanied by deficits in cognitive and social skills. Adult hippocampal neurogenesis is a lifelong phenomenon, with new neurons being formed in the granular cell layer of the dentate gyrus. Impaired neurogenesis is associated with multiple behavioral disorders including Alzheimer’s disease and schizophrenia. PTSD patients often present hippocampal atrophy and animal models clearly present impaired neurogenesis. Increased expression of the pro-inflammatory cytokine interleukin-17 is reported in PTSD patients, but its role in the pathophysiology of the diseases is unknown. 
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  • 28 Mar 2022
Topic Review
Chasmataspidid
Chasmataspidids, sometime referred to as chasmataspids, are a group of extinct chelicerate arthropods that form the order Chasmataspidida. Chasmataspidids are probably related to horseshoe crabs (Xiphosura) and/or sea scorpions (Eurypterida), with more recent studies suggest that they form a clade (Dekatriata) with Eurypterida and Arachnida. Chasmataspidids are known sporadically in the fossil record through to the mid-Devonian, with possible evidence suggest that they also present during the late Cambrian. Chasmataspidids are most easily recognised by having an abdomen divided into a short forepart (preabdomen or mesosoma) and a longer hindpart (postabdomen or metasoma) each comprising 4 and 9 segments respectively. There is some debate about whether they form a natural (i.e. monophyletic) group.
  • 1.9K
  • 14 Oct 2022
Biography
Hans Joachim Schellnhuber
Hans Joachim "John" Schellnhuber (born 7 June 1950)[1][2] is a German atmospheric physicist, climatologist and founding director of the Potsdam Institute for Climate Impact Research (PIK) and former chair of the German Advisory Council on Global Change (WBGU).[3] Schellnhuber studied mathematics and physics, obtaining a doctorate in theoretical physics from the University of Regensburg in 198
  • 1.9K
  • 15 Nov 2022
Topic Review
Oral Melanosis
Oral melanosis is a benign pigmented lesion arising in the oral cavity. Oral pigmentation is asymptomatic and does not usually cause any alteration to the texture or thickness of the affected area. The colour can be uniform or speckled and can appear solitary or as multiple lesions. Depending on the site, depth, and quantity of pigment, the appearance can vary considerably. Oral pigmentation is found in the following places: Oral pigmentation affects about 3% of the population and is most likely seen in those with dark skin; however people with light skin have, on average, 30 local pigmented areas and in some circumstances will present intra-orally. They are more often found in females than males and the typical age at presentation is 40 years although they can appear at any age. Diagnosis of oral pigmentation is by a complete history taken by the clinican followed by a thorough clinical examination. Management of such lesions is typically by close clinical monitoring, photographs and measuring tools. A biopsy may be indicated where the following features are present: large or new-pigmented lesions and those with a papular appearance or irregular colouration.
  • 1.9K
  • 11 Nov 2022
Topic Review
Pig-Footed Bandicoot
The pig-footed bandicoot (Chaeropus ecaudatus) was a small marsupial of the arid and semi-arid plains of Australia . The distribution range of the species was later reduced to an inland desert region, where it was last recorded in the 1950s; it is now presumed to be extinct.
  • 1.9K
  • 18 Oct 2022
Biography
Dorothy J. Phillips
Dorothy Jean Phillips (née Wingfield) (born July 27, 1945) is an African-American Chemist and Director-at-Large of the American Chemical Society. She worked on circular dichroism and bioseparation. In 1967 Phillips was the first African-American woman to complete a bachelor's degree at Vanderbilt University. Phillips grew up in segregation in the southern United States.[1] She was one of eig
  • 1.9K
  • 01 Dec 2022
Biography
Tanya Harrison
(Dr.) Tanya Harrison is a Planetary Scientist and Manager of Science Programs at Planet Labs, working in their federal arm with science agencies to increase research use of Planet Labs' Earth observing satellite data. Previously she was the Director of Research at Arizona State University's Space Technology and Science Initiative, and was on the science team of the Mars Opportunity and Curiosity
  • 1.8K
  • 22 Nov 2022
Biography
Alan Lightman
Alan Paige Lightman is an American physicist, writer, and social entrepreneur. He has served on the faculties of Harvard and Massachusetts Institute of Technology (MIT) and is currently professor of the practice of the humanities at MIT. He is widely known as the author of the international bestseller Einstein's Dreams. Einstein's Dreams has been adapted into dozens of independent theatrical pro
  • 1.8K
  • 06 Dec 2022
Topic Review
Addax
The addax (Addax nasomaculatus), also known as the white antelope and the screwhorn antelope, is an antelope native to the Sahara Desert. The only member of the genus Addax, it was first described scientifically by Henri de Blainville in 1816. As suggested by its alternative name, the pale antelope has long, twisted horns - typically 55 to 80 cm (22 to 31 in) in females and 70 to 85 cm (28 to 33 in) in males. Males stand from 105 to 115 cm (41 to 45 in) at the shoulder, with females at 95 to 110 cm (37 to 43 in). They are sexually dimorphic, as the females are smaller than the males. The colour of the coat depends on the season - in the winter, it is greyish-brown with white hindquarters and legs, and long, brown hair on the head, neck, and shoulders; in the summer, the coat turns almost completely white or sandy blonde. The addax mainly eats grasses and leaves of any available shrubs, leguminous herbs and bushes. They are well-adapted to exist in their desert habitat, as they can live without water for long periods of time. Addax form herds of five to 20 members, consisting of both males and females. They are led by the oldest female. Due to its slow movements, the addax is an easy target for its predators: humans, lions, leopards, cheetahs and African wild dogs. Breeding season is at its peak during winter and early spring. The natural habitat of the addax are arid regions, semideserts and sandy and stony deserts. The addax is a critically endangered species of antelope, as classified by the IUCN. Although extremely rare in its native habitat due to unregulated hunting, it is quite common in captivity. The addax was once abundant in North Africa; however it is currently only native to Chad, Mauritania, and Niger. It is extirpated from Algeria, Egypt, Libya, Sudan, and Western Sahara, but has been reintroduced into Morocco and Tunisia.
  • 1.8K
  • 14 Oct 2022
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