Your browser does not fully support modern features. Please upgrade for a smoother experience.
Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Biography
Usha Goswami
Usha Goswami is a researcher and professor of Cognitive Developmental Neuroscience at the University of Cambridge and the director of the Centre for Neuroscience in Education at St. John's College, Cambridge. She obtained her Ph.D. in developmental psychology from the University of Oxford before becoming a professor of cognitive developmental psychology at the University College London. Goswami'
  • 1.3K
  • 27 Dec 2022
Topic Review
Cheating
Cheating is a term used in behavioral ecology and ethology to describe behavior whereby organisms receive a benefit at the cost of other organisms. Cheating is common in many mutualistic and altruistic relationships. A cheater is an individual who does not cooperate (or cooperates less than their fair share) but can potentially gain the benefit from others cooperating. Cheaters are also those who selfishly use common resources to maximize their individual fitness at the expense of a group. Natural selection favors cheating, but there are mechanisms to regulate it.
  • 1.3K
  • 27 Oct 2022
Topic Review
Influenzavirus C
Influenza virus C is a genus in the virus family Orthomyxoviridae, which includes the viruses that cause influenza. The species in this genus is called Influenza C virus. Influenza C viruses are known to infect humans and pigs. Flu due to the Type C species is rare compared to Types A or B, but can be severe and can cause local epidemics. Type C has 7 RNA segments and encodes 9 proteins, while Types A and B have 8 RNA segments and encode at least 10 proteins.
  • 1.3K
  • 01 Dec 2022
Topic Review
Functional Properties of Passion Fruit Seed Extract
The genus Passiflora L. is widely cultivated in tropical and subtropical regions. The major species, Passiflora edulis Sims, is known as ‘passion fruit’ and is widely used in processed foods as well as eaten raw. P. edulis fruits are eaten for their pulp together with the seeds; however, the seeds are often discarded when used in processed foods. P. edulis seeds contain a variety of nutrients and functional components, and their industrial use is desirable from the perspective of waste reduction.
  • 1.3K
  • 13 Jan 2022
Biography
Josef Schintlmeister
Josef Schintlmeister (16 June 1908, Radstadt – 14 August 1971, Hinterglemm) was an Austrian-German nuclear physicist and alpinist from Radstadt. During World War II, he worked on the German nuclear energy project, also known as the Uranium Club. After World War II, he was sent Russia to work on the Soviet atomic bomb project. After he returned to Vienna, he took positions in East Germany. He w
  • 1.3K
  • 15 Dec 2022
Topic Review
Paper-Based Microfluidic Chips
Traditional detectors mostly consist of complex structures that are difficult to use. However, paper-based microfluidic chips combine the advantages of small size, high efficiency, easy processing and environmental protection. Paper-based microfluidic chips for biomedical applications focus on efficiency, accuracy, integration and innovation. As a result, continuous progress has been observed in the transition from single-channel to multi-channel detection and from qualitative to quantitative detection. These developments have improved the efficiency and accuracy of single cells and biochemical markers detection. Paper-based microfluidic chips can provide insights into multiple fields, including biomedicine and other related fields.
  • 1.3K
  • 14 Nov 2022
Topic Review
Health Effects of Pesticides
Health effects of pesticides may be acute or delayed in those who are exposed. Acute effects can include pesticide poisoning, which may be a medical emergency. Strong evidence exists for other, long-term negative health outcomes from pesticide exposure including birth defects, fetal death, neurodevelopmental disorder, cancer, and neurologic illness including Parkinson's disease. Toxicity of pesticides depend on the type of chemical, route of exposure, dosage, and timing of exposure. According to The Stockholm Convention on Persistent Organic Pollutants (2001), 9 of the 12 most dangerous and persistent chemicals were pesticides, so many have now been withdrawn from use.
  • 1.3K
  • 25 Nov 2022
Topic Review
High-Altitude Cerebral Edema
High-altitude cerebral edema (HACE) is a medical condition in which the brain swells with fluid because of the physiological effects of traveling to a high altitude. It generally appears in patients who have acute mountain sickness and involves disorientation, lethargy, and nausea among other symptoms. It occurs when the body fails to acclimatize while ascending to a high altitude. It appears to be a vasogenic edema (fluid penetration of the blood–brain barrier), although cytotoxic edema (cellular retention of fluids) may play a role as well. Individuals with the condition must immediately descend to a lower altitude or coma and death can occur. Patients are usually given supplemental oxygen and dexamethasone as well. HACE can be prevented by ascending to heights slowly to allow the body more time to acclimatize. Acetazolamide also helps prevent the condition. Untreated patients usually die within 48 hours. Those who receive treatment may take weeks to fully recover. It is a rare condition, occurring in less than one percent of people who ascend to 4,000 metres (13,000 ft). Although it was first described in 1913, little was known about the cause of the condition until MRI studies were performed in the 1990s.
  • 1.3K
  • 09 Nov 2022
Topic Review
Bertielliasis
Bertielliasis is the infection of Bertiella, a cestode tapeworm parasite that primarily infects nonhuman primates, rodents and Australia n marsupials. Occasionally, human infections have been documented by one of two species: Bertiella studeri, or Bertiella mucronata. Of 29 different Bertiella species, only these two can infect humans. These infections present with symptoms similar to most tapeworm cases, and are frequently misdiagnosed. Bertiella transmission is through oribatid mites that are often present in the soil of problem areas, and can be easily prevented by avoiding contact with nonhuman primates, rodents and soil in these areas.
  • 1.3K
  • 14 Nov 2022
Biography
John M. Grunsfeld
John Mace Grunsfeld (born October 10, 1958) is an American physicist and a former NASA astronaut. He is a veteran of five Space Shuttle flights and has served as NASA Chief Scientist. His academic background includes research in high energy astrophysics, cosmic ray physics and the emerging field of exoplanet studies with specific interest in future astronomical instrumentation.[1] After retiring
  • 1.3K
  • 16 Nov 2022
Topic Review
2009 Swine Flu Pandemic Vaccine
The 2009 swine flu pandemic vaccines were influenza vaccines developed to protect against the pandemic H1N1/09 virus. These vaccines either contained inactivated (killed) influenza virus, or weakened live virus that could not cause influenza. The killed virus was injected, while the live virus was given as a nasal spray. Both these types of vaccine were produced by growing the virus in chicken eggs. Around three billion doses were produced, with delivery in November 2009.Cite error: Closing missing for tag providing a strong protective immune response and having a similar safety profile to the usual seasonal influenza vaccine. However, about 30% of people already had some immunity to the virus, with the vaccine conferring greatest benefit on young people, since many older people are already immune through exposure to similar viruses in the past. The vaccine also provided some cross-protection against the 1918 flu pandemic strain. Early results (pre-25 December 2009) from an observational cohort of 248,000 individuals in Scotland showed the vaccine to be effective at preventing H1N1 influenza (95.0% effectiveness [95% confidence intervals 76.0–100.0%]) and influenza-related hospital admissions (64.7% [95% confidence intervals 12.0–85.8%]). Developing, testing, and manufacturing sufficient quantities of a vaccine is a process that takes many months. According to Keiji Fukuda of the World Health Organization, "There's much greater vaccine capacity than there was a few years ago, but there is not enough vaccine capacity to instantly make vaccines for the entire world's population for influenza." The nasal mist version of the vaccine started shipping on 1 October 2009.
  • 1.3K
  • 29 Nov 2022
Biography
Peter Herbert Jensen
Peter Herbert Jensen (28 November 1913, Göttingen – 17 August 1955, Quend) was a Germany experimental nuclear physicist. During World War II, he worked on the German nuclear energy project, known as the Uranverein. After the war, he was a department director in the high-voltage section of the Max Planck Institute for Chemistry, in Mainz, and a supernumerary professor at the University of Main
  • 1.3K
  • 20 Dec 2022
Biography
Warren P. Mason
Warren Perry Mason (September 28, 1900 – August 23, 1986) was an American electrical engineer and physicist at Bell Labs. A graduate of Columbia University, he had a prolific output, publishing four books and nearly a hundred papers. He was issued over two hundred patents, more than anyone else at Bell Labs. His work included acoustics, filters, crystals and ceramics, materials science, polyme
  • 1.3K
  • 20 Dec 2022
Topic Review
Neuropeptide Y
Neuropeptide Y (NPY) is a 36 amino-acid neuropeptide that is involved in various physiological and homeostatic processes in both the central and peripheral nervous systems. NPY has been identified as the most abundant peptide present in the mammalian central nervous system, which consists of the brain and spinal cord. It is secreted alongside other neurotransmitters such as GABA and glutamate.  In the autonomic system it is produced mainly by neurons of the sympathetic nervous system and serves as a strong vasoconstrictor and also causes growth of fat tissue. In the brain, it is produced in various locations including the hypothalamus, and is thought to have several functions, including: increasing food intake and storage of energy as fat, reducing anxiety and stress, reducing pain perception, affecting the circadian rhythm, reducing voluntary alcohol intake, lowering blood pressure, and controlling epileptic seizures.
  • 1.3K
  • 14 Nov 2022
Biography
Terri Attwood
Teresa K. Attwood is a Professor of Bioinformatics in the Department of Computer Science and School of Biological Sciences at the University of Manchester and a visiting fellow at the European Bioinformatics Institute (EMBL-EBI).[1] She held a Royal Society University Research Fellowship at University College London (UCL) from 1993 to 1999 and at the University of Manchester from 1999 to 2002.[2
  • 1.3K
  • 16 Nov 2022
Topic Review
Shark Agonistic Displays
Agonism is a broad term which encompasses many behaviours that result from, or are triggered by biological conflict between competing organisms. Approximately 23 shark species are capable of producing such displays when threatened by intraspecific or interspecific competitors, as an evolutionary strategy to avoid unnecessary combat. The behavioural, postural, social and kinetic elements which comprise this complex, ritualized display can be easily distinguished from normal, or non-display behaviour, considered typical of that species' life history. The display itself confers pertinent information to the foe regarding the displayer's physical fitness, body size, inborn biological weaponry, confidence and determination to fight. This behaviour is advantageous because it is much less biologically taxing for an individual to display its intention to fight than the injuries it would sustain during conflict, which is why agonistic displays have been reinforced through evolutionary time, as an adaptation to personal fitness. Agonistic displays are essential to the social dynamics of many biological taxa, extending far beyond sharks.
  • 1.3K
  • 22 Nov 2022
Biography
John Henry Schwarz
John Henry Schwarz (/ʃwɔːrts/; born November 22, 1941) is an United States theoretical physicist.[1] Along with Yoichiro Nambu, Holger Bech Nielsen, Joël Scherk, Gabriele Veneziano, Michael Green, and Leonard Susskind, he is regarded as one of the founders of string theory. He studied mathematics at Harvard College (A.B., 1962) and theoretical physics at the University of California at Be
  • 1.3K
  • 28 Dec 2022
Biography
Shmuel Erlich
H. Shmuel Erlich (born July 11, 1937 in Frankfurt) is an Israeli psychoanalyst, organizational consultant and psychologist of clinical psychology. Since 1990 he has been professor of the Sigmund Freud Chair at the Hebrew University of Jerusalem. In 2005 he became emeritus.[1] Erlich is one of the spiritual fathers of the Nazareth-Conferences.[2] Almost two years after Shmuel Erlich's birth, a
  • 1.3K
  • 16 Dec 2022
Topic Review
Extracellular Vesicles as Drug Delivery Agent
Extracellular vesicles (Evs) can be found in all biological fluids, making them the perfect non-invasive diagnostic tool, as their cargo causes functional changes in the cells upon receiving, unlike synthetic drug carriers. EVs last longer in circulation and instigate minor immune responses, making them the perfect drug carrier.
  • 1.3K
  • 06 Jul 2022
Biography
Ilaria Capua
Ilaria Capua (Rome, April 21, 1966) is a virologist and former Italian politician, best known for her research on influenza viruses, particularly avian influenza, and her efforts promoting open access to genetic information on emerging viruses as part of pre-pandemic preparedness efforts. Dr. Capua is currently a full professor with Institute of Food and Agricultural Science (IFAS), and has a j
  • 1.3K
  • 21 Nov 2022
  • Page
  • of
  • 68
Academic Video Service