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Topic Review
Adipose Tissue Development
Despite developing prenatally, the adipose tissue is unique in its ability to undergo drastic growth even after reaching its mature size. Proper adipose tissue development relies on tightly regulated processes that require careful coordination and cooperation between many different cell types and their matrix cues.
  • 3.2K
  • 25 Oct 2022
Topic Review
AIM
AIM (AOL Instant Messenger) was an instant messaging and presence computer program created by AOL, which used the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. AIM was popular by the late 1990s, in United States and other countries, and was the leading instant messaging application in that region into the following decade. Teens and college students were known to use the messenger's away message feature to keep in touch with friends, often frequently changing their away message throughout a day or leaving a message up with one's computer left on to inform buddies of their ongoings, location, parties, thoughts, or jokes. AIM's popularity declined as AOL subscribers started decreasing and steeply towards the 2010s, as Gmail's Google Talk, SMS, and Internet social networks, like Facebook gained popularity. Its fall has often been compared with other once-popular Internet services, such as Myspace. In June 2015, AOL was acquired by Verizon Communications. In June 2017, Verizon combined AOL and Yahoo into its subsidiary Oath Inc. (now called Yahoo). The company discontinued AIM as a service on December 15, 2017.
  • 3.2K
  • 16 Nov 2022
Topic Review
List of Landforms
Landforms are categorised by characteristic physical attributes such as elevation, slope, orientation, rock exposure, and soil type.
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  • 04 Nov 2022
Topic Review
Optical Tweezers
Optical tweezers is a very well-established technique that has developed into a standard tool for trapping and manipulating micron and submicron particles with great success in the last decades. Under tight focusing of a laser beam the optical forces that appear around the focus spot can be both repulsive (scattering force) and attractive (gradient force) towards a particle with higher refractive index than its surroundings. By proper control of these two forces a stable potential can be achieved where a particle can be trapped and manipulated in space. The ability to manipulate micro- and nanoscale matter according to our needs has opened great avenues to a variety of research areas.
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  • 19 Aug 2020
Topic Review
Alkylimidazoles
Alkylimidazoles have good complexing properties, also they are  cheap so can be successfully used in the separation of metal ions from aqueous solutions.
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  • 16 Dec 2020
Topic Review
IBM Hexadecimal Floating Point
IBM System/360 computers, and subsequent machines based on that architecture (mainframes), support a hexadecimal floating-point format (HFP). In comparison to IEEE 754 floating-point, the IBM floating-point format has a longer significand, and a shorter exponent. All IBM floating-point formats have 7 bits of exponent with a bias of 64. The normalized range of representable numbers is from 16−65 to 1663 (approx. 5.39761 × 10−79 to 7.237005 × 1075). The number is represented as the following formula: (−1)sign × 0.significand × 16exponent−64.
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  • 09 Oct 2022
Topic Review
Surfaces on Sprint Performance
The main function of a sport surface is to ensure safety and adequate player performance during physical exercise practice. 
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  • 29 Apr 2021
Topic Review
Light detection and ranging (LiDAR)
Light Detection and Ranging (LiDAR) is a 3D imaging technique, widely used in many applications such as augmented reality, automotive, machine vision, spacecraft navigation and landing. Achieving long-ranges and high-speed, most of all in outdoor applications with strong solar background illumination, are challenging requirements.
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  • 23 Jun 2021
Topic Review
JASS
JASS and JASS2 (sometimes said to stand for Just Another Scripting Syntax) is a scripting language provided with an event-driven API created by Blizzard Entertainment. It is used extensively by their games Warcraft III (JASS2) and StarCraft (JASS) for scripting events in the game world. Map creators can use it in the Warcraft III World Editor and the Starcraft Editor to create scripts for triggers and AI (artificial intelligence) in custom maps and campaigns. Blizzard Entertainment has replaced JASS with Galaxy in Starcraft II.
  • 3.2K
  • 25 Nov 2022
Topic Review
Advancements and Challenges in Handwritten Text Recognition
Handwritten Text Recognition (HTR) involves automatically transforming a source’s handwritten text within a digital image into its machine text representation.
  • 3.2K
  • 07 Mar 2024
Topic Review
Free Radical
Free radicals can be defined as molecular entities or molecular fragments, capable of independent existence (hence “free”). They contain one or more unpaired electrons in an outer atomic orbital or molecular orbital (hence “radical”). The negative electrical charge of electron(s) may be counterbalanced by the positive nuclear charge of positrons, resulting in a neutral particle; otherwise, having anion or cation radicals.
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  • 29 Apr 2022
Topic Review
Advancements in Natural Dyes Extraction
The dyeing and finishing step represents a clear hotspot in the textile supply chain as the wet processing stages require significant amounts of water, energy, and chemicals. In order to tackle environmental issues, natural dyes are gaining attention from researchers as more sustainable alternatives to synthetic ones. The extraction of colorant from natural sources is a fundamental step in preparing purified natural dyes, as a plant’s matrix contains only a small percentage of dye, usually in the range of 0.5–5%, and several other constituents such as water-insoluble fibers, carbohydrates, protein, chlorophyll, and tannins, among others. The selection of the most suitable extraction technique should be based on the evaluation of the nature and solubility of the dyeing materials.
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  • 28 Aug 2023
Topic Review
Electrochemical Cell
An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions. The electrochemical cells which generate an electric current are called voltaic cells or galvanic cells and the other ones are called electrolytic cells which are used to drive chemical reactions like electrolysis. A common example of an galvanic cells is a standard 1.5 volt cell meant for consumer use. A battery consists of one or more cells, connected either in parallel, series or series-and-parallel pattern.
  • 3.2K
  • 08 Oct 2022
Topic Review
Plug-In Electric Vehicles in the Netherlands
The adoption of plug-in electric vehicles in the Netherlands is actively supported by the Dutch government through the exemption of the registration fee and road taxes. These purchase incentives have been adjusted over time. Considering the potential of plug-in electric vehicles in the country due to its relative small size and geography, the Dutch government set a target of 15,000 to 20,000 electric vehicles with three or more wheels on the roads in 2015; 200,000 vehicles in 2020; and 1 million vehicles in 2025. The first two targets were achieved two years earlier than planned. The Dutch plug-in market was dominated by plug-in hybrids until 2016, when the tax rules changed after it became apparent many users rarely used the electric motors and only bought the cars for their tax advantage. In 2019, plug-in electric passenger cars had a market share of 14.9%, and rose to 24.6% in 2020, with battery electric vehicles dominating sales in both years. (As of December 2020), there were 297,380 highway-legal light-duty plug-in electric vehicles on the road in the Netherlands, consisting of 182,481 fully electric cars, 108,652 plug-in hybrids, and 6,247 all-electric light utility vans. (As of December 2012), the Netherlands was the country with the highest ratio of slow charging points to electric vehicles (EVSE/EV), with a ratio of more than 0.50, while the U.S had a slow EVSE/EV ratio of 0.20. The Netherlands' mix of slow and fast chargers has allowed it to become the country with the highest number of charging point per capita in the world. (As of December 2016), there were 11,768 public slow charging points available 24/7, 14,320 slow charging point with limited public access, 612 public and semi-public fast charging points, and over 72,000 private charging points.
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  • 10 Nov 2022
Topic Review
Geiger-Marsden Experiments
The Geiger–Marsden experiments (also called the Rutherford gold foil experiment) were a landmark series of experiments by which scientists learned that every atom has a nucleus where all of its positive charge and most of its mass is concentrated. They deduced this after measuring how an alpha particle beam is scattered when it strikes a thin metal foil. The experiments were performed between 1908 and 1913 by Hans Geiger and Ernest Marsden under the direction of Ernest Rutherford at the Physical Laboratories of the University of Manchester.
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  • 25 Oct 2022
Topic Review
Grey Water
Grey water (also spelled gray water in the United States) or sullage refers to wastewater generated in households or office buildings from streams without fecal contamination, i.e., all streams except for the wastewater from toilets. Sources of grey water include sinks, showers, baths, washing machines or dishwashers. As grey water contains fewer pathogens than domestic wastewater, it is generally safer to handle and easier to treat and reuse onsite for toilet flushing, landscape or crop irrigation, and other non-potable uses. The application of grey water reuse in urban water systems provides substantial benefits for both the water supply subsystem, by reducing the demand for fresh clean water, and the wastewater subsystems by reducing the amount of wastewater required to be conveyed and treated. Treated grey water has many uses, for example, toilet flushing or irrigation.
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  • 04 Nov 2022
Topic Review
LINPACK Benchmarks
The LINPACK Benchmarks are a measure of a system's floating-point computing power. Introduced by Jack Dongarra, they measure how fast a computer solves a dense n by n system of linear equations Ax = b, which is a common task in engineering. The latest version of these benchmarks is used to build the TOP500 list, ranking the world's most powerful supercomputers. The aim is to approximate how fast a computer will perform when solving real problems. It is a simplification, since no single computational task can reflect the overall performance of a computer system. Nevertheless, the LINPACK benchmark performance can provide a good correction over the peak performance provided by the manufacturer. The peak performance is the maximal theoretical performance a computer can achieve, calculated as the machine's frequency, in cycles per second, times the number of operations per cycle it can perform. The actual performance will always be lower than the peak performance. The performance of a computer is a complex issue that depends on many interconnected variables. The performance measured by the LINPACK benchmark consists of the number of 64-bit floating-point operations, generally additions and multiplications, a computer can perform per second, also known as FLOPS. However, a computer's performance when running actual applications is likely to be far behind the maximal performance it achieves running the appropriate LINPACK benchmark. The name of these benchmarks comes from the LINPACK package, a collection of algebra Fortran subroutines widely used in the 1980s, and initially tightly linked to the LINPACK benchmark. The LINPACK package has since been replaced by other libraries.
  • 3.2K
  • 02 Dec 2022
Topic Review
Potential Effects of Fasting in SARS-CoV-2 Infection
Intermittent fasting is a potential complementary therapy to vaccination and antiviral therapies that not only impacts chronic disease risk but also has good evidence of an impact on infectious diseases such as COVID-19. Intermittent fasting should improve the immune response of and reduce acute hyperinflammation for unvaccinated people, strengthen immunity between vaccinations for vaccinated people, and prolong the length of time a vaccinated person can go before receiving a subsequent booster dose of the SARS-CoV-2 vaccine. A set of at least 10 biological mechanisms may be impacted by intermittent fasting in the human physiological response to SARS-CoV-2 that may reduce the severity of COVID-19 outcomes. For example, by boosting autophagy, fasting may aid the immune system to identify silently infected cells via increased degradation of viral proteins and through antigen presentation to natural killer cells and cytotoxic T cells. Intermittent fasting may also provide a constellation of mechanisms that empower a damaged human immune system to repair itself and to hunt down residual SARS-CoV-2 virus that is hiding from it in the context of both acute infection and post-acute sequelae of COVID-19. Furthermore, fasting adds no financial cost to a care plan and, when practiced safely, is available to most adults regardless of education, income, location, or ancestry. Clinical trials of intermittent fasting for reduction of COVID-19 severity are needed.
  • 3.2K
  • 06 Jan 2023
Topic Review
Marker-Controlled Watershed for Segmentation of Images
Watershed is a widely used image segmentation algorithm. A grayscale image is considered as topographic relief, which is flooded from initial basins. However, frequently they are not aware of the options of the algorithm and the peculiarities of its realizations. There are many watershed implementations in software packages and products. Even if these packages are based on the identical algorithm–watershed by flooding, their outcomes, processing speed, and consumed memory, vary greatly.
  • 3.2K
  • 07 Jul 2022
Topic Review
Organic Peroxide
Organic peroxides are organic compounds containing the peroxide functional group (ROOR′). If the R′ is hydrogen, the compounds are called hydroperoxides, which are discussed in that article. Peresters are the peroxy analog of esters and have general structure RC(O)OOR. The O−O bond of peroxides easily breaks, producing free radicals of the form RO• (the dot represents an unpaired electron). Thus, organic peroxides are useful as initiators for some types of polymerisation, such as the epoxy resins used in glass-reinforced plastics. MEKP and benzoyl peroxide are commonly used for this purpose. However, the same property also means that organic peroxides can either intentionally or unintentionally initiate explosive polymerisation in materials with unsaturated chemical bonds, and this process has been used in explosives. Organic peroxides, like their inorganic counterparts, are powerful bleaching agents.
  • 3.2K
  • 31 Oct 2022
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