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Topic Review
EPR (Nuclear Reactor)
The EPR is a third generation pressurised water reactor (PWR) design. It has been designed and developed mainly by Framatome (part of Areva between 2001 and 2017) and Électricité de France (EDF) in France, and Siemens in Germany. In Europe this reactor design was called European Pressurised Reactor, and the internationalised name was Evolutionary Power Reactor, but it is now simply named EPR. The first two EPR units, at Olkiluoto in Finland and Flamanville in France, are both facing costly construction delays (to at least 2019). Construction commenced on two Chinese units at Taishan in 2009 and 2010. Taishan 1 achieved criticality on 6 June 2018. Taishan 2 is expected to begin operation in 2019. Two units at Hinkley Point in the United Kingdom received final approval in September 2016 and are expected to be completed by 2025. EDF has acknowledged severe difficulties in building the EPR design. In September 2015 EDF stated that the design of a "New Model" EPR was being worked on, which will be easier and cheaper to build.
  • 4.1K
  • 15 Nov 2022
Topic Review
Methanol to Gasoline (MTG)
The MTG (Methanol to Gasoline) process allows us to transform methanol into hydrocarbons within the range of gasoline boiling points.
  • 4.1K
  • 04 Mar 2022
Topic Review
High Performance Liquid Chromatography with Fluorescence Detection Methods
Steroids are compounds widely available in nature and synthesized for therapeutic and medical purposes. Although several analytical techniques are available for the quantification of steroids, their analysis is challenging due to their low levels and complex matrices of the samples. The efficiency and quick separation of the high performance liquid chromatography (HPLC) combined with the sensitivity, selectivity, simplicity, and cost-efficiency of fluorescence, make HPLC coupled to fluorescence detection (HPLC-FLD) an ideal tool for routine measurement and detection of steroids.
  • 4.1K
  • 01 Aug 2022
Topic Review
Epidemiology of Plague
Globally about 600 cases of plague are reported a year. In 2017 and November 2019 the countries with the most cases include the Democratic Republic of the Congo, Madagascar , and Peru. Local outbreaks of the plague are grouped into three plague pandemics, whereby the respective start and end dates and the assignment of some outbreaks to either pandemic are still subject to discussion. The pandemics were: However, the late medieval Black Death (roughly 1331 to 1353) is sometimes seen not as the start of the second, but as the end of the first pandemic – in that case, the first pandemic ended in around 1353, and the second pandemic's start would be about 1361. Also various end dates of the second pandemic are given in the literature, ranging from about 1840 to 1890.
  • 4.1K
  • 29 Nov 2022
Topic Review
Levels-of-Processing Effect
The levels-of-processing effect, identified by Fergus I. M. Craik and Robert S. Lockhart in 1972, describes memory recall of stimuli as a function of the depth of mental processing. Deeper levels of analysis produce more elaborate, longer-lasting, and stronger memory traces than shallow levels of analysis. Depth of processing falls on a shallow to deep continuum. Shallow processing (e.g., processing based on phonemic and orthographic components) leads to a fragile memory trace that is susceptible to rapid decay. Conversely, deep processing (e.g., semantic processing) results in a more durable memory trace. This theory contradicts the multi-store Atkinson-Shiffrin memory model which represents memory strength as being continuously variable, the assumption being that rehearsal always improves long-term memory. They argued that rehearsal that consists simply of repeating previous analyses (maintenance rehearsal) doesn't enhance long-term memory. In a study from 1975 (Craik and Tulving) participants were given a list of 60 words. Each word was presented along with three questions. The participant had to answer one of them. Those three questions were in one of three categories. One category of questions was about how the word was presented visually ("Is the word shown in italics?"). The second category of questions was about the phonemic qualities of the word ("Does the word begin with the sound 'bee'?"). The third category of questions was presented so that the reader was forced to think about the word within a certain context. ("Can you meet one in the street [a friend]"?) The result of this study showed that the words which contained deep processing (the latter) were remembered better.
  • 4.1K
  • 25 Oct 2022
Topic Review
Carbon Quantum Dots and Graphene Quantum Dots
Carbon quantum dots (CQDs) are small carbon NPs with a size less than 10 nm having excellent conductivity, chemical stability, environmental friendliness, high photostability, broadband optical absorption, low toxicity, photobleaching resistance, high surface area, and ease of modification. Graphene quantum dots (GQDs) are two-dimensional nanocrystals composed of small graphene particles with lateral diameters less than 100 nm. 
  • 4.1K
  • 12 Oct 2022
Topic Review
Zen (Microarchitecture)
Zen is the codename for a computer processor microarchitecture from AMD, and was first used with their Ryzen series of CPUs in February 2017. The first Zen-based preview system was demonstrated at E3 2016, and first substantially detailed at an event hosted a block away from the Intel Developer Forum 2016. The first Zen-based CPUs codenamed "Summit Ridge" reached the market in early March 2017, Zen-derived Epyc server processors launched in June 2017 and Zen-based APUs arrived in November 2017. Zen is a clean sheet design that differs from the long-standing Bulldozer architecture. Zen-based processors use a 14 nm FinFET process, are reportedly more energy efficient, and can execute significantly more instructions per cycle. SMT has been introduced, allowing each core to run two threads. The cache system has also been redesigned, making the L1 cache write-back. Zen processors use three different sockets: desktop and mobile Ryzen chips use the AM4 socket, bringing DDR4 support; the high-end desktop Zen-based Threadripper chips support quad-channel DDR4 RAM and offer 64 PCIe 3.0 lanes (vs 24 lanes), using the TR4 socket; and Epyc server processors offer 128 PCI 3.0 lanes and octal-channel DDR4 using the SP3 socket. But not all Socket AM4 CPUs are based on Zen microarchitecture (the 7th gen APUs and Athlon X4s are based on Excavator microarchitecture). Zen is based on a SoC design. The memory, PCIe, SATA, and USB controllers are incorporated into the same chip as the processor cores. This has advantages in bandwidth and power, at the expense of chip complexity and die area. This SoC design allows the Zen microarchitecture to scale from laptops and small-form factor mini PCs to high-end desktops and servers.
  • 4.1K
  • 11 Nov 2022
Topic Review
Religious Trauma Syndrome
Religious trauma syndrome (RTS) is recognized in psychology and psychotherapy as a set of symptoms, ranging in severity, experienced by those who have participated in and left behind authoritarian, dogmatic, and controlling religious groups and belief systems. Symptoms include cognitive, affective, functional, and social/cultural issues as well as developmental delays. RTS occurs in response to two-fold trauma: first the prolonged abuse of indoctrination from a controlling religious community, and secondly the act of leaving the controlling religious community. RTS has developed as its own heuristic collection of symptoms informed by psychological theories of trauma originating in PTSD, C-PTSD and betrayal trauma theory, taking relational and social context into account when approaching further research and treatment. The term religious trauma syndrome was coined in 2011 by psychologist Marlene Winell in an article for British Association for Behavioural and Cognitive Psychotherapies, though the phenomenon was recognized long before that. The term has circulated among psychotherapists, former fundamentalists, and others recovering from religious indoctrination. Winell explains the need for a label and the benefits of naming the symptoms encompassed by RTS as similar to naming anorexia as a disorder: the label can lessen shame and isolation for survivors while promoting diagnosis, treatment, and training for professionals who work with those suffering from the condition. Survivors report relief when they find out that RTS is “real.”
  • 4.1K
  • 22 Nov 2022
Topic Review
Newgrounds
Newgrounds (collectively Newgrounds.com, Inc.) is an American online entertainment and social media website and company. It hosts user-generated content such as gaming, filming, audio and artwork composition in four respective website categories. While AOL and Geocities had statically hosted user-generated content, Newgrounds provided visitor-driven voting and ranking of user-generated animations. The site's founder and owner, Thomas "Tom" Fulp, founded the site and company in 1995 and produces in-house content over at the headquarters and offices, based in the Glenside neighborhood of Cheltenham Township, Pennsylvania.
  • 4.1K
  • 19 Oct 2022
Topic Review
Non-Coding RNAs in Plants
Plant transcriptomes encompass a large number of functional non-coding RNAs (ncRNAs), only some of which have protein-coding capacity. Since their initial discovery, ncRNAs have been classified into two broad categories based on their biogenesis and mechanisms of action, housekeeping ncRNAs and regulatory ncRNAs. With advances in RNA sequencing technology and computational methods, bioinformatics resources continue to emerge and update rapidly, including workflow for in silico ncRNA analysis, up-to-date platforms, databases, and tools dedicated to ncRNA identification and functional annotation.
  • 4.1K
  • 15 Apr 2022
Topic Review
Compositional Engineering of Perovskites
We give a systematic overview of compositional engineering by distinguishing the different defect-reducing mechanisms. Doping effects are divided into influences on: (1) crystallization; (2) lattice properties. Incorporation of dopant influences the lattice properties by: (a) lattice strain relaxation; (b) chemical bonding enhancement; (c) band gap tuning. The intrinsic lattice strain in undoped perovskite was shown to induce vacancy formation. The incorporation of smaller ions, such as Cl, F and Cd, increases the energy for vacancy formation. Zn doping is reported to induce strain relaxation but also to enhance the chemical bonding. The combination of computational studies using (DFT) calculations quantifying and qualifying the defect-reducing propensities of different dopants with experimental studies is essential for a deeper understanding and unraveling insights, such as the dynamics of iodine vacancies and the photochemistry of the iodine interstitials, and can eventually lead to a more rational approach in the search for optimal photovoltaic materials.
  • 4.1K
  • 28 Oct 2020
Topic Review
List of Datasets for Machine Learning Research
These datasets are used for machine-learning research and have been cited in peer-reviewed academic journals. Datasets are an integral part of the field of machine learning. Major advances in this field can result from advances in learning algorithms (such as deep learning), computer hardware, and, less-intuitively, the availability of high-quality training datasets. High-quality labeled training datasets for supervised and semi-supervised machine learning algorithms are usually difficult and expensive to produce because of the large amount of time needed to label the data. Although they do not need to be labeled, high-quality datasets for unsupervised learning can also be difficult and costly to produce.
  • 4.1K
  • 21 Oct 2022
Topic Review
Society 5.0
Big Data, the Internet of Things, and robotic and augmented realities are just some of the technologies that belong to Industry 4.0. These technologies improve working conditions and increase productivity and the quality of industry production. However, they can also improve life and society as a whole. A new perspective is oriented towards social well-being and it is called Society 5.0. Industry 4.0 supports the transition to the new society, but other drivers are also needed. 
  • 4.1K
  • 17 Nov 2021
Topic Review
Carbohydrates, Deep and REM Sleep
Carbohydrate quantity was shown to affect sleep architecture, and especially N3 and REM sleep stages. Alterations in both quantity and quality of carbohydrate intake showed a significant effect on sleep initiation. Variations in carbohydrate quality significantly affected measures of sleep continuation. Further studies are needed to assess the effect of long-term carbohydrate interventions on sleep. 
  • 4.1K
  • 28 Sep 2021
Topic Review
Network Intrusion Detection Systems Using Artificial Intelligence/Machine Learning
The rapid growth of the Internet and communications has resulted in a huge increase in transmitted data. These data are coveted by attackers and they continuously create novel attacks to steal or corrupt these data. The growth of these attacks is an issue for the security of systems and represents one of the biggest challenges for intrusion detection. An intrusion detection system (IDS) is a tool that helps to detect intrusions by inspecting the network traffic. Although many researchers have studied and created new IDS solutions, IDS still needs improving in order to have good detection accuracy while reducing false alarm rates. 
  • 4.1K
  • 23 Dec 2022
Topic Review
Waste Cooking Oil for Biofuel in India
Waste or used cooking oil (WCO/UCO) is a common source of trans fat consumed by Indians, leading to many non-communicable diseases like diabetes, hypertension, cardiovascular diseases, stroke, cancer, etc. In fact, out of 230 million MT of edible oil consumption, India is currently capable of producing only 3 million MT of biodiesel. Moreover, with the increased emphasis on the circular economy to improve rural employment opportunities, India should adopt a complete exergy analysis of biodiesel production from WCO.
  • 4.1K
  • 20 Feb 2023
Topic Review
Mechanical Properties of BCC-Structured High-Entropy Alloys
A new metallurgical strategy was introduced to develop advanced materials with outstanding performance—high-entropy alloys (HEAs). Today, HEAs contain five or more multiple principle metallic elements in equal or near-equal atomic percentages. HEAs’ four core effects—high configurational entropy, sluggish diffusion, severe lattice distortion, and the cock-tail effect—are mainly responsible for their various physical and mechanical properties. HEAs present promising properties, such as high strength and fracture toughness at room temperature and high temperatures and have excellent wear resistance, and corrosion resistance, along with high-temperature oxidation.
  • 4.1K
  • 28 Mar 2022
Topic Review
Fundamental Building Solutions for Expansive Soils
Expansive soils exist in many countries worldwide, and their characteristics make them exceedingly difficult to engineer. Due to its significant swelling and shrinkage characteristics, expansive soil defies many of the stabilization solutions available to engineers. Differential heave or settlement occurs when expansive soil swells or shrinks, causing severe damage to foundations, buildings, roadways, and retaining structures. In such soils, it is necessary to construct a foundation that avoids the adverse effects of settlement.
  • 4.1K
  • 06 May 2023
Topic Review
Imidazoline Surfactants
Imidazoline surfactants are a class of surfactants with a hydrophobic tail and an imidazoline hydrophilic head. They are commonly used as emulsifiers, wetting agents, and cleaning agents in a variety of applications, including personal care, industrial cleaning, and agriculture. Imidazoline surfactants are known for their stability in acidic and alkaline conditions, making them a popular choice for many industrial processes. Imidazoline surfactants are mainly the cationic surfactants that contain an imidazoline ring in their chemical structure. They are commonly used as emulsifiers, corrosion inhibitors, and wetting agents in a variety of industrial and household applications. Imidazoline surfactants are typically synthesized by reacting a fatty acid or fatty amine with an imidazole or imidazoline compound. The resulting surfactants have a unique combination of properties, including excellent emulsification, wetting, and corrosion inhibition abilities.
  • 4.1K
  • 24 Mar 2023
Topic Review
Sustainable Fashion Consumption
The fast-fashion market is becoming popular, escalating, and aggravating the throwaway culture phenomenon. Thus, it is valuable to understand the factors that influence sustainable fashion consumption and the clothing disposal pattern among young consumers in developing countries like Malaysia. Personal norms, social norms, and environmental awareness were the key influencing factors of sustainable fashion consumption. Philanthropic clothing disposal approaches such as donating clothes to charity or giving them away to family and friends, and selling old clothing for economic reasons are popular among young adults in Malaysia. Facilitating conditions to dispose of unwanted clothing is not as crucial as in developing countries. Many areas in developing countries still lack or are unable to locate facilities that collect unwanted clothing.
  • 4.1K
  • 11 Mar 2022
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