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
Topic Review
Electric Outboard Motor
Electric outboard motors are self contained propulsory units for boats, first invented in 1973 by Morton Ray of Ray Electric Outboards. These are not to be confused with trolling motors, which are not designed as a primary source of power. Most electric outboard motors have 0.5 to 4 kW direct current (DC) electric motors, operated at 12 to 60 volts DC. Recently developed outboard motors are powered with an alternating current (AC) or DC electric motor in the power head like a conventional petrol engine. With this setup, a motor can produce 10 kW output or more and is able to replace a petrol engine of 15 HP or more. The advantage of the induction or asynchronous motor is the power transfer to the rotor by means of electromagnetic induction. As these engines do not use permanent magnets, they require less maintenance and develop more torque at lower RPM.
  • 2.2K
  • 23 Nov 2022
Topic Review
Back Dorm Boys
The Back Dorm Boys is a Chinese duo who gained fame for their lip sync videos to songs by the Backstreet Boys and other pop stars. Their videos, captured on a low quality Web cam in their college dorm room, have been viewed by Internet users within China and around the world. Many of their videos can be seen on YouTube, giving them YouTube fame. The two, Wei Wei (simplified Chinese: 韦炜; traditional Chinese: 韋煒; pinyin: Wéi Wěi) and Huang Yixin (simplified Chinese: 黄艺馨; traditional Chinese: 黃藝馨; pinyin: Huáng Yìxīn), were sculpture majors at the Guangzhou Academy of Fine Arts (simplified Chinese: 广州美术学院; traditional Chinese: 廣州美術學院; pinyin: Gǔangzhōu Měishù Xuéyuàn). The Dormitory Boys, a blog of note on Blogger, which some believe is not maintained by the Back Dorm Boys, but written by a ghostwriter, took requests, asking fans to recommend a song they should lip sync to. In January 2006, a poll was conducted from songs picked from 427 requests received 2005, December. The Black Eyed Peas' song "My Humps" won the poll, but the Back Dorm Boys lip synced to the song "Don't Lie" by the Black Eyed Peas instead, which was a huge hit on YouTube as well as their host country. They are apparently producing a drama, according to their official blog. They are featured in one Mainland China sitcom, or drama, called Nonstop (青春进行时).
  • 2.2K
  • 03 Nov 2022
Topic Review
Arsenic Toxicity in Plants
 The non-essential metalloid arsenic (As) is widely distributed in soil and underground water of many countries. Arsenic contamination is a concern because it creates threat to food security in terms of crop productivity and food safety. Plants exposed to As show morpho-physiological, growth and developmental disorder which altogether result in loss of productivity. At physiological level, As-induced altered biochemistry in chloroplast, mitochondria, peroxisome, endoplasmic reticulum, cell wall, plasma membrane causes reactive oxygen species (ROS) overgeneration which damage cell through disintegrating the structure of lipids, proteins, and DNA. Therefore, plants tolerance to ROS-induced oxidative stress is a vital strategy for enhancing As tolerance in plants. Plants having enhanced antioxidant defense system show greater tolerance to As toxicity. Depending upon plant diversity (As hyperaccumulator/non-hyperaccumulator or As tolerant/susceptible) the mechanisms of As accumulation, absorption or toxicity response may differ. There can be various crop management practices such as exogenous application of nutrients, hormones, antioxidants, osmolytes, signaling molecules, different chelating agents, microbial inoculants, organic amendments etc. can be effective against As toxicity in plants. 
  • 2.2K
  • 16 May 2022
Topic Review
Physics-Informed Neural Networks
Physics-informed neural networks (PINNs) are a type of universal function approximators that can embed the knowledge of any physical laws that govern a given data-set in the learning process, and can be described by partial differential equations (PDEs). They overcome the low data availability of some biological and engineering systems that makes most state-of-the-art machine learning techniques lack robustness, rendering them ineffective in these scenarios. The prior knowledge of general physical laws acts in the training of neural networks (NNs) as a regularization agent that limits the space of admissible solutions, increasing the correctness of the function approximation. This way, embedding this prior information into a neural network results in enhancing the information content of the available data, facilitating the learning algorithm to capture the right solution and to generalize well even with a low amount of training examples.
  • 2.2K
  • 28 Nov 2022
Topic Review
Yamhad Dynasty
Template:Royal house The Yamhad dynasty was an ancient Amorite royal family founded in c. 1810 BC by Sumu-Epuh of Yamhad who had his capital in the city of Aleppo. Started as a local dynasty, the family expanded its influence through the actions of its energetic ruler Yarim-Lim I who turned it into the most influential family in the Levant through both diplomatic and military tools. At its height the dynasty controlled most of northern Syria and the modern Turkish province of Hatay with a cadet branch ruling in the city of Alalakh (Land of Mukish). The dynasty was ousted during a short Hittite occupation of Aleppo in the beginning of the 16th century BC but was restored and expanded the kingdom again before being driven out of Aleppo by the Mitannians in c. 1524. Idrimi a member of the dynasty was able to conquer Alalakh leaving his descendents to rule until the last of them was dethroned by the Hittite king Suppiluliuma I in c. 1344 BC.
  • 2.2K
  • 24 Oct 2022
Topic Review
The Role of Inflammation in Tinnitus
Accumulating evidence suggests that inflammation plays a role in the pathogenesis of subjective tinnitus. Noise exposure and salicylate administration both lead to inflammation throughout the whole auditory pathway. In particular, TNF-α, IL-1β, glia and activated platelets are associated with acute tinnitus. TNF-α and IL-1β influence NMDA and GABA receptors, leading to an increased excitatory and decreased inhibitory neurotransmission. These changes can lead to neuroplasticity and thus chronic tinnitus. Whether inflammatory mediators still play a role in chronic tinnitus remains to be elucidated. Nevertheless, drugs targeting the involved inflammatory mediators could be a potential effective treatment for (acute) tinnitus.
  • 2.2K
  • 28 Mar 2022
Topic Review
Remotely Piloted Aircraft
The establishment of significant applications of RPAs in livestock, forestry, crop monitoring, disease surveillance, irrigation, soil analysis, fertilization, crop harvest, weed management, mechanical pollination, crop insurance and tree plantation are cited in the light of currently available literature in this domain.
  • 2.2K
  • 06 Jan 2021
Topic Review
Short Peptides
Short peptides should not include more than 45 amino acids.
  • 2.2K
  • 19 Feb 2021
Topic Review
Coal Fly Ash
Coal fly ash (CFA) is a complex material produced from the combustion of pulverized coal in thermal power plants during the production of electricity.
  • 2.2K
  • 18 Mar 2021
Topic Review
Diamond Approach
A. H. Almaas (/ˈɑːlməs/ AHL-məss) is the pen name of A. Hameed Ali (born 1944), a Kuwaiti American author and spiritual teacher who writes about and teaches an approach to spiritual development informed by modern psychology and therapy which he calls the Diamond Approach. "Almaas" is the Arabic word for "diamond". Almaas is originally from Kuwait. He is the spiritual head of the Ridhwan School. Almaas' books were originally published by the Ridhwan School, under the Diamond Books publishing title, but are now published by Shambhala.
  • 2.2K
  • 14 Oct 2022
Topic Review
Biaxial Tensile Testing
Biaxial tensile testing is a versatile technique to address the mechanical characterization of planar materials. Typical materials tested in biaxial configuration include metal sheets, silicone elastomers, composites, thin films, textiles and biological soft tissues.
  • 2.2K
  • 24 Oct 2022
Topic Review
Light-Field Camera
A light field camera, also known as plenoptic camera, captures information about the light field emanating from a scene; that is, the intensity of light in a scene, and also the direction that the light rays are traveling in space. This contrasts with a conventional camera, which records only light intensity. One type of light field camera uses an array of micro-lenses placed in front of an otherwise conventional image sensor to sense intensity, color, and directional information. Multi-camera arrays are another type of light field camera. Holograms are a type of film-based light field image.
  • 2.2K
  • 26 Oct 2022
Topic Review
Dry Powder Inhaler Products
Dry powder inhalers (DPIs) are drug–device combination products where the complexity of the formulation, its interaction with the device, and input from users play important roles in the drug delivery. As the landscape of DPI products advances with new powder formulations and novel device designs, understanding how these advancements impact performance can aid in developing generics that are therapeutically equivalent to the reference listed drug (RLD) products. 
  • 2.2K
  • 24 Nov 2022
Topic Review
Non-Spiking Neuron
Non-spiking neurons are neurons that are located in the central and peripheral nervous systems and function as intermediary relays for sensory-motor neurons. They do not exhibit the characteristic spiking behavior of action potential generating neurons. Non-spiking neural networks are integrated with spiking neural networks to have a synergistic effect in being able to stimulate some sensory or motor response while also being able to modulate the response.
  • 2.2K
  • 16 Dec 2022
Topic Review
Benefits and Challenges for Electric Vehicles
Electric vehicles (EVs) are gaining popularity as they are independent of oil and do not produce greenhouse gases. For better public transportation services, transportation in a smart city should be hassle-free, environmentally friendly, and comprise networked and shared vehicles. The electric vehicle (EV), which also solves the world’s energy problems, is the finest option.
  • 2.2K
  • 31 May 2023
Topic Review
Molecularly Imprinted Polymers
Molecularly imprinted polymers (MIPs) are synthetic recognition materials obtained by the polymerisation of functional and cross-linking monomers in the presence of a template. MIPs are attractive not only for their recognition properties that are close to those of natural receptors and their availability for a wide range of targets but also for their superior chemical and physical stability compared to biological receptors. 
  • 2.2K
  • 10 Jun 2021
Topic Review
Green Bioprocessing of Algae-Derived Biochar
Biochar is a carbonaceous substance that is created from algal biomass by thermal breakdown in an oxygen-absence environment.
  • 2.2K
  • 31 Jan 2023
Topic Review
Plant-Derived Mucilage for Nanocarrier Fabrication
Easily sourced mucus from various plant parts is an odorless, colorless and tasteless substance with emerging commercial potential in agriculture, food, cosmetics and pharmaceuticals due to its non-toxic and biodegradable properties. It has been found that plant-derived mucilage can be used as a natural thickener or emulsifier and an alternative to synthetic polymers and additives. Because it is an invisible barrier that separates the surface from the surrounding atmosphere, it is used as edible coatings to extend the shelf life of fresh vegetables and fruits as well as many food products. In addition to its functional properties, mucilage can also be used for the production of nanocarriers. We focus on mucus extraction methods and its use as a natural preservative for fresh produce. We detailed the key properties related to the extraction and preservation of food, the mechanism of the effect of mucus on the sensory properties of products, coating methods when using mucus and its recipe for preserving fruit and vegetables. Understanding the ecological, economic and scientific factors of production and the efficiency of mucus as a multi-directional agent will open up its practical application in many industries. 
  • 2.2K
  • 05 Jul 2021
Topic Review
List of Amphibians
List of amphibians organizes the class of amphibian by family and subfamilies and mentions the number of species in each of them. The list below largely follows Darrel Frost's Amphibian Species of the World (ASW), Version 5.5 (31 January 2011). Another classification, which largely follows Frost, but deviates from it in part is the one of AmphibiaWeb, by the University of California, Berkeley. The major differences between these two classifications are:
  • 2.2K
  • 25 Oct 2022
Topic Review
Maruti Gypsy
The Maruti Gypsy is a four-wheel-drive vehicle based on the long wheelbase Suzuki Jimny SJ40/410 series. It is primarily an off-road vehicle, or a vehicle for rough unprepared roads. It was sold in New Zealand as the Suzuki Farm Worker. It was assembled at the Maruti Suzuki's Gurgaon plant in India.
  • 2.2K
  • 28 Oct 2022
  • Page
  • of
  • 2728
Featured Entry Collections
>>

Featured Reprints

>>
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Medieval Royal Iconography
Academic Video Service
Feedback