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Topic Review
Suspension (Vehicle)
Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two. Suspension systems must support both roadholding/handling and ride quality, which are at odds with each other. The tuning of suspensions involves finding the right compromise. It is important for the suspension to keep the road wheel in contact with the road surface as much as possible, because all the road or ground forces acting on the vehicle do so through the contact patches of the tires. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different.
  • 2.1K
  • 04 Nov 2022
Topic Review
Green Chemistry Principles for Cellulose-Based Hydrogels
Hydrogels are 3D structures consisting of hydrophilic polymer networks. They can adsorb water and biological fluids in high quantities (up to 1000 times their dry weight). Cellulose is a hydrophilic material. It has inter- and intramolecular hydrogen bonds and van der Waals forces that cause many problems regarding its dissolution.
  • 2.1K
  • 02 Mar 2023
Topic Review
Molybdenum Disulfide Biosensor for Cancer Biomarker Detection
Molybdenum disulfide (MoS2) is a promising two-dimensional (2D) nanomaterial, whose unique adjustable bandgap shows excellent electronic and optical properties in the construction of biosensor interfaces. It not only has the advantages of a high catalytic activity and low manufacturing costs, but it can also further expand the application of hybrid structures through different functionalization, and it is widely used in various biosensors fields. 
  • 2.1K
  • 11 Oct 2023
Topic Review
Beneficial Microorganisms in Soil Quality and Plant Health
The practice of agriculture has always been a source of food production. The increase in the global population leads to improvements in agriculture, increasing crop quality and yield. Plant growth results from the interaction between roots and their environment, which is the soil or planting medium that provides structural support as well as water and nutrients to the plant. Therefore, good soil management is necessary to prevent problems that will directly affect plant health. Integrated crop management is a pragmatic approach to crop production, which includes integrated pest management focusing on crop protection. Currently, there is an extended idea that many microorganisms, such as fungi or bacteria, are useful in agriculture since they are attractive eco-friendly alternatives to mineral fertilizers and chemical pesticides. The microbes that interact with the plants supply nutrients to crops, control phytopathogens and stimulate plant growth. These actions have beneficial implications in agriculture.
  • 2.1K
  • 23 May 2022
Topic Review
Cessna 180
The Cessna 180 is a four- or six-seat, fixed conventional gear general aviation airplane which was produced between 1953 and 1981. Though the design is no longer in production, many of these aircraft are still in use as personal aircraft and in utility roles such as bush flying.
  • 2.1K
  • 23 Nov 2022
Topic Review
Plant Secondary Metabolites in Pharmaceutical Product Development
Plant secondary metabolites (PSMs) are vital for human health and constitute the skeletal framework of many pharmaceutical drugs. Indeed, more than 25% of the existing drugs belong to PSMs. One of the continuing challenges for drug discovery and pharmaceutical industries is gaining access to natural products, including medicinal plants. This bottleneck is heightened for endangered species prohibited for large sample collection, even if they show biological hits. While cultivating the pharmaceutically interesting plant species may be a solution, it is not always possible to grow the organism outside its natural habitat. Plants affected by abiotic stress present a potential alternative source for drug discovery. In order to overcome abiotic environmental stressors, plants may mount a defense response by producing a diversity of PSMs to avoid cells and tissue damage. Plants either synthesize new chemicals or increase the concentration (in most instances) of existing chemicals, including the prominent bioactive lead compounds morphine, camptothecin, catharanthine, epicatechin-3-gallate (EGCG), quercetin, resveratrol, and kaempferol. Most PSMs produced under various abiotic stress conditions are plant defense chemicals and are functionally anti-inflammatory and antioxidative. The major PSM groups are terpenoids, followed by alkaloids and phenolic compounds.
  • 2.1K
  • 29 Mar 2022
Topic Review
Bergenin
Bergenin (BER), a key constituent of Bergenia crassifolia (Saxifragaceae), has gained extensive attention, owing to its array of pharmacological actions, including anti-infective, anti-cancer, anti-diabetic, neuroprotective, hepatoprotective, anti-urolithiatic, anti-hyperuricemic, and anti-bradykinin properties. 
  • 2.1K
  • 29 Mar 2022
Topic Review
TPT
TPT (time partition testing) is a systematic test methodology for the automated software test and verification of embedded control systems, cyber-physical systems, and dataflow programs. TPT is specialised on testing and validation of embedded systems whose inputs and outputs can be represented as signals and is a dedicated method for testing continuous behaviour of systems. Most control systems belong to this system class. The outstanding characteristic of control systems is the fact that they interact closely interlinked with a real world environment. Controllers need to observe their environment and react correspondingly to its behaviour. The system works in an interactional cycle with its environment and is subject to temporal constraints. Testing these systems is to stimulate and to check the timing behaviour. Traditional functional testing methods use scripts – TPT uses model-based testing. TPT combines a systematic and graphic modelling technique for test cases with a fully automated test execution in different environments and automatic test evaluation. TPT covers the following four test activities:
  • 2.1K
  • 08 Oct 2022
Topic Review
A Review of Geometry, Construction and Modelling for Carbon Nanotori
After the discovery of circular formations of single walled carbon nanotubes called fullerene crop circles, their structure has become one of the most researched amongst carbon nanostructures due to their particular interesting physical properties. Several experiments and simulations have been conducted to understand these intriguing objects, including their formation and their hidden characteristics. It is scientifically conceivable that these crop circles, nowadays referred to as carbon nanotori, can be formed by experimentally bending carbon nanotubes into ring shaped structures or by connecting several sections of carbon nanotubes. Toroidal carbon nanotubes are likely to have many applications, especially in electricity and magnetism. In this review, geometry, construction, modelling and possible applications are discussed and the existing known analytical expressions, as obtained from the Lennard-Jones potential and the continuum approximation, for their interaction energies with other nanostructures are summarised.
  • 2.1K
  • 29 Oct 2020
Topic Review
Jacobsen Syndrome
Jacobsen syndrome is a condition caused by a loss of genetic material from chromosome 11. Because this deletion occurs at the end (terminus) of the long (q) arm of chromosome 11, Jacobsen syndrome is also known as 11q terminal deletion disorder.
  • 2.1K
  • 23 Dec 2020
Topic Review
Distance Education
Distance learning is a type of education in which students and their lecturers are separated, i.e., they reside in different physical locations, and the instruction between them is communicated using different technologies
  • 2.1K
  • 23 Mar 2021
Topic Review
Formic Acid for Hydrogen Production
Formic acid is a liquid organic hydrogen carrier giving hydrogen on demand using catalysts. Metal complexes are known to be used as efficient catalysts for the hydrogen production from formic acid decomposition. Their performance could be better than those of supported catalysts with metal nanoparticles. However, difficulties to separate metal complexes from the reaction mixture limit their industrial applications. This problem can be resolved by supporting metal complexes on the surface of different supports, which may additionally provide some surface sites for the formic acid activation.
  • 2.1K
  • 30 Mar 2021
Topic Review
Chemistry and Occurrence of Tropane Alkaloids in Foods
Tropane alkaloids (TAs) are natural toxins produced by different plants, mainly from the Solanaceae family. 
  • 2.1K
  • 08 Feb 2022
Topic Review
Algorithmic Design in Virtual Reality
Virtual reality has been shown to facilitate perception and navigation inside 3D models, while stimulating creativity and enhancing architect/client interaction. In this scenario, in order to better explore paths along the design space that are suggested from this interaction, it is important to support quick updates to the model while still immersed in it. Algorithmic design, an approach to architectural design that uses parametric algorithms to represent a design space, rather than a single design instance, provides such support.
  • 2.1K
  • 06 Apr 2022
Topic Review
LACE Index Predicts High Risk of 30-Day Readmission
The LACE index accounts for: Length of stay (L), Acuity of admission (A), Comorbidities (C), and recent Emergency department use (E).  The incorporation of a high-risk LACE index showed favorable risk prediction and could be applied to predict 30-day readmission with chronic conditions. 
  • 2.1K
  • 12 May 2022
Topic Review
Grey Goo
Grey goo (also spelled gray goo) is a hypothetical end-of-the-world scenario involving molecular nanotechnology in which out-of-control self-replicating robots consume all biomass on Earth while building more of themselves, a scenario that has been called ecophagy ("eating the environment", more literally "eating the habitation"). The original idea assumed machines were designed to have this capability, while popularizations have assumed that machines might somehow gain this capability by accident. Self-replicating machines of the macroscopic variety were originally described by mathematician John von Neumann, and are sometimes referred to as von Neumann machines or clanking replicators. The term gray goo was coined by nanotechnology pioneer Eric Drexler in his 1986 book Engines of Creation. In 2004 he stated, "I wish I had never used the term 'gray goo'." Engines of Creation mentions "gray goo" in two paragraphs and a note, while the popularized idea of gray goo was first publicized in a mass-circulation magazine, Omni, in November 1986.
  • 2.1K
  • 08 Oct 2022
Topic Review
List of Aircraft of World War II
The list of aircraft of World War II includes all the aircraft used by those countries which were at war during World War II from the period between their joining the conflict and the conflict ending for them. Aircraft developed but not used operationally in the war are in the prototypes section at the end. Prototypes for aircraft that entered service under a different design number are ignored in favour of the service version. The date the aircraft entered service, or was first flown if the service date is unknown or it did not enter service follows the name, followed by the country of origin and major wartime users. Aircraft used for multiple roles are generally only listed under their primary role unless specialized versions were built for other roles in significant numbers. Aircraft used by neutral countries such as Spain , Switzerland and Sweden (or countries which did no significant fighting such as most of those in South America) are not included.
  • 2.1K
  • 08 Nov 2022
Topic Review
Erythritol
The sugar alcohol erythritol is a relatively new food ingredient. It is naturally occurring in plants, however, produced commercially by fermentation. It is also produced endogenously via the pentose phosphate pathway (PPP). Consumers perceive erythritol as less healthy than sweeteners extracted from plants, including sucrose. 
  • 2.1K
  • 09 Jan 2023
Topic Review
Crowdsourcing Update Methods for High-Definition Maps
High-definition (HD) maps serve as crucial infrastructure for autonomous driving technology, facilitating vehicles in positioning, environmental perception, and motion planning without being affected by weather changes or sensor-visibility limitations.
  • 2.1K
  • 01 Apr 2024
Topic Review
Flying Disc Techniques
Flying discs (including Frisbees) can be thrown in many ways. Each throw involves snapping the wrist as well as flicking the arm to impart gyroscopic stability to the disc and accelerate its mass to a certain velocity. Without spin, a disc will wobble and fall; without velocity, the disc will not go anywhere. Using these two guidelines, any number of throws are possible. Most discs are designed to create lift when thrown with the flat side up.
  • 2.1K
  • 22 Nov 2022
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