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Topic Review
RAF Cardington
Royal Air Force Cardington or more simply RAF Cardington is a former Royal Air Force Royal Air Force station in Bedfordshire, England , with a long and varied history, particularly in relation to airships and balloons. Most of the former RAF station is in the parish of Eastcotts, as is the settlement of Shortstown.
  • 2.2K
  • 29 Nov 2022
Topic Review
Photorespiration: The Futile Cycle?
Photorespiration, or C2 photosynthesis, is generally considered a futile cycle that potentially decreases photosynthetic carbon fixation by more than 25%. Nonetheless, many essential processes, such as nitrogen assimilation, C1 metabolism, and sulfur assimilation, depend on photorespiration. Most studies of photosynthetic and photorespiratory reactions are conducted with magnesium as the sole metal cofactor despite many of the enzymes involved in these reactions readily associating with manganese. Indeed, when manganese is present, the energy efficiency of these reactions may improve. 
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  • 19 May 2021
Topic Review
Intelligent Unmanned Mining
Intelligent unmanned mining is the application of new generation of communication technology, Internet of Things (IoT), cloud computing, big data, artificial intelligence and other advanced technologies, intelligent mining and transportation equipment are taked such as coal mining machine, hydraulic support, scraper conveyor, loader, crusher, belt conveyor with autonomous perception, autonomous decision-making and autonomous control execution ability, the comprehensive intelligent control system as the core, and uses visual remote monitoring or adaptive intelligent planning mining as a means, the safe and efficient comprehensive intelligent coal mining method can realize the intelligent operation process of working face mining, support, coal transportation (working condition adaptive and process collaborative control) or one-click start-stop operation mode (including unmanned follow-up operation and safe patrol).
  • 2.2K
  • 19 Feb 2022
Topic Review
Bio-energy with Carbon Capture and Storage
Bio-energy with carbon capture and storage (BECCS) is a potential greenhouse gas mitigation technology which produces negative carbon dioxide emissions by combining bioenergy (energy from biomass) use with geologic carbon capture and storage. The concept of BECCS is drawn from the integration of trees and crops, which extract carbon dioxide (CO2) from the atmosphere as they grow, the use of this biomass in processing industries or power plants, and the application of carbon capture and storage via CO2 injection into geological formations. There are other non-BECCS forms of carbon dioxide removal and storage that include technologies such as biochar, carbon dioxide air capture and biomass burial and enhanced weathering. According to a recent Biorecro report, there is 550 000 tonnes CO2/year in total BECCS capacity currently operating, divided between three different facilities (as of January 2012). In the IPCC Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), BECCS was indicated as a key technology for reaching low carbon dioxide atmospheric concentration targets. The negative emissions that can be produced by BECCS has been estimated by the Royal Society to be equivalent to a 50 to 150 ppm decrease in global atmospheric carbon dioxide concentrations and according to the International Energy Agency, the BLUE map climate change mitigation scenario calls for more than 2 gigatonnes of negative CO2 emissions per year with BECCS in 2050. According to Stanford University, 10 gigatonnes is achievable by this date. The Imperial College London, the UK Met Office Hadley Centre for Climate Prediction and Research, the Tyndall Centre for Climate Change Research, the Walker Institute for Climate System Research, and the Grantham Institute for Climate Change issued a joint report on carbon dioxide removal technologies as part of the AVOID: Avoiding dangerous climate change research program, stating that "Overall, of the technologies studied in this report, BECCS has the greatest maturity and there are no major practical barriers to its introduction into today’s energy system. The presence of a primary product will support early deployment." According to the OECD, "Achieving lower concentration targets (450 ppm) depends significantly on the use of BECCS".
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  • 25 Oct 2022
Topic Review
Introduction to the Mathematics of General Relativity
The mathematics of general relativity is complex. In Newton's theories of motion, an object's length and the rate at which time passes remain constant while the object accelerates, meaning that many problems in Newtonian mechanics may be solved by algebra alone. In relativity, however, an object's length and the rate at which time passes both change appreciably as the object's speed approaches the speed of light, meaning that more variables and more complicated mathematics are required to calculate the object's motion. As a result, relativity requires the use of concepts such as vectors, tensors, pseudotensors and curvilinear coordinates. For an introduction based on the example of particles following circular orbits about a large mass, nonrelativistic and relativistic treatments are given in, respectively, Newtonian motivations for general relativity and Theoretical motivation for general relativity.
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  • 01 Dec 2022
Topic Review
Cloud-Native Workload Orchestration at the Edge
Cloud-native computing principles such as virtualization and orchestration are key to transferring to the promising paradigm of edge computing. Challenges of containerization, operative models and scarce availability of established tools make a thorough review indispensable. Container virtualization and its orchestration through Kubernetes have dominated the cloud computing domain, while major efforts have been recently recorded focused on the adaptation of these technologies to the edge. Such initiatives have addressed either the reduction of container engines and the development of specific tailored operating systems or the development of smaller K8s distributions and edge-focused adaptations (such as KubeEdge). Finally, new workload virtualization approaches, such asWebAssembly modules together with the joint orchestration of these heterogeneous workloads, seem to be the topics to pay attention to in the short to medium term.
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  • 27 Feb 2023
Topic Review
Microbial and Commercial Enzymes in Beverage Production Process
Enzymes are highly effective biocatalysts used in various industrial processes, playing a key role in winemaking and in other fermented beverages. Many of the enzymes used in fermentation processes have their origin in fruits, in the indigenous microbiota of the fruit, and in the microorganisms present during beverage processing. Besides naturally occurring enzymes, commercial preparations that usually blend different activities are used (glucosidases, glucanases, pectinases, and proteases, among others).
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  • 05 May 2023
Topic Review
Produced Water Sustainability in Oil and Gas Sector
Oilfield produced water (PW) is the industry’s principal source of waste byproducts. Oil-producing countries, especially those with limited water resources, face significant difficulty in treating PW for recovery and reuse. Depending on its quality and content, PW can be treated using a variety of technologies. Numerous nations are currently undertaking substantial endeavors to ascertain efficacious and cost-effective treatment methodologies in order to rehabilitate their freshwater supplies. The compositions of pollutants play a major role in the selection of acceptable methods. According to the degree of contamination and the requirement for water quality, several treatment strategies can, therefore, be used. To successfully remove pollutants and/or lessen their detrimental effects on the environment, methods comprising physical, chemical, biological, and membrane treatments have been applied.
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  • 05 Dec 2023
Topic Review
Breast Milk Immunoglobulinome
Breast milk components contribute to the infant’s immune development and protection, and among other immune factors, immunoglobulins (Igs) are the most studied. The presence of IgA in milk has been known for a long time; however, less information is available about the presence of other Igs such as IgM, IgG, and their subtypes (IgG1, IgG2, IgG3, and IgG4) or even IgE or IgD.
  • 2.2K
  • 03 Jun 2021
Topic Review
Korean Taekwondo Athletes
This study aimed to present a standard and normal distribution of Taekwondo athletes’ physical characteristics and physical fitness profiles using a systematic review. A systematic search was conducted using four Korean databases (Research Information Sharing Service, National Digital Science Library, DBpia, and Korean Studies Information Service System). From 2010 to 2020, we reviewed 838 papers on Taekwondo athletes’ physical characteristics and physical fitness factors (e.g., body composition, muscle strength, muscular endurance, flexibility, cardiorespiratory fitness, power, agility, balance, speed, and reaction time).
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  • 29 Sep 2021
Topic Review
3DP Medicines and Medical Devices
Novel additive manufacturing (AM) techniques and particularly 3D printing (3DP) have achieved a decade of success in pharmaceutical and biomedical fields. Highly innovative personalized therapeutical solutions may be designed and manufactured through a layer-by-layer approach starting from a digital model realized according to the needs of a specific patient or a patient group. The combination of patient-tailored drug dose, dosage, or diagnostic form (shape and size) and drug release adjustment has the potential to ensure the optimal patient therapy. This document provides an overview on different 3DP techniques to produce personalized medicines and medical devices, highlighting, for each method, the critical printing process parameters, the main starting materials, as well as advantages and limitations.
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  • 17 May 2022
Topic Review
Masturbation and Sexual Function
Masturbation is defined as the manipulation of one’s own genital organs, typically the penis or clitoris, for purposes of sexual gratification. Masturbation frequency was positively associated with overall sexual function for women. This was moderated by relationship status, meaning that more frequent masturbation was associated with better orgasmic function and sexual satisfaction in single women, whereas the opposite was true for women who were in a relationship. For men, more frequent masturbation was associated with better erectile function for single men, and better ejaculatory latency but worse orgasmic function, intercourse satisfaction, and more symptoms of delayed ejaculation for men who were in a relationship. Lower sexual compatibility and sexual dysfunctions in the partner were associated with more frequent masturbation in both sexes. The associations between masturbation frequency and sexual function vary for single and partnered individuals, and are, for the latter group, further affected by sexual compatibility.
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  • 29 Jun 2022
Topic Review
Heart Rate Variability in Hyperthyroidism
Cardiovascular effects of thyroid hormones may be measured through heart rate variability (HRV). Hyperthyroidism is associated with a decreased HRV, which may be explained by the effect of thyroid hormones and thyroid-stimulating hormone (TSH). The increased sympathetic and decreased parasympathetic activity may have clinical implications.
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  • 18 Jul 2022
Topic Review
Plant-Based Meat Analogues from Alternative Protein
Meat is a major source of dietary protein. It is frequently recognized as a high-quality protein source due to its nutritional qualities and favorable sensory properties such as texture and flavor. However, a rising global population has led to a rise in the production and consumption of meat around the world, which has raised environmental concerns regarding the usage of land and water, as well as the impact of pollution and climate change, greenhouse gas emissions, and the loss of biodiversity. Plant proteins seem to be a possible solution to these issues since they can replace meat through the creation of nutritionally and structurally equivalent meat-like products. These products are referred to as meat substitutes. Some terminology for meat substitutes includes meat replacers, meat analogues, meat imitations, nonmeat protein alternatives, meatless meats, man-made meats, artificial meats, meat-like meats, mock meats, faux meats, and fake meats. These can be partial or full substitutes for meat, and there is an extensive range of textures. The term “meat analogue” usually refers to products that have a similar look, texture, taste, and color to meat but do not include any meat.
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  • 30 Sep 2022
Topic Review
Alkenyl Succinic Anhydride
Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years after the introduction of the chemical in papermaking, scientists still have differing views on how ASA interacts with cellulose. Several experiments were conducted to bring more clarity to the ASA sizing mechanism, especially on the contentious question of ASA-cellulose covalent bonding or the esterification reaction between ASA and cellulose during papermaking.
  • 2.2K
  • 07 Jul 2023
Topic Review
Phase-Change Materials
Phase-change materials (PCMs) are important photonic materials that have the advantages of a rapid and reversible phase change, a great difference in the optical properties between the crystalline and amorphous states, scalability, and nonvolatility. 
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  • 19 May 2021
Topic Review
Sound Trap
A sound trap, also known as a duct silencer, sound attenuator, or muffler, is a special acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces. In its simplest form, a sound trap consists of an baffle within the ductwork. These baffles often contain sound-absorbing materials. The physical dimensions and baffle configuration of sound traps are selected to attenuate a specific range of frequencies. Unlike conventional internally-lined ductwork, which is only effective at attenuating mid- and high-frequency noise, sound traps can achieve broader band attenuation in relatively short lengths. Certain types of sound traps are essentially a Helmholtz resonator used as a passive noise-control device.
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  • 25 Oct 2022
Topic Review
Gastro-
Gastro- is a common English-language prefix derived from the ancient Greek γαστήρ gastēr ("stomach").
  • 2.2K
  • 25 Oct 2022
Topic Review
Chemical Properties of Calcium Phosphate
 Calcium phosphate (CaP)-based biomaterials have superior properties and have been widely used for bone defect repair, due to their similarities to the inorganic components of human bones. The biological performance of CaPs, as a determining factor for their applications, are dependent on their physicochemical properties. Hydroxyapatite (HAP) as the most thermally stable crystalline phase of CaP is mostly used in the form of ceramics or composites scaffolds with polymers. Nanostructured CaPs with large surface areas are suitable for drug/gene delivery systems. CaP is not only a family of natural minerals, but also includes biominerals in humans, which are the main inorganic component of hard tissue (bone and teeth).
  • 2.2K
  • 27 Oct 2022
Topic Review
List of Devices with Gorilla Glass
With the expanded use of touchscreen mobile phones, mobile makers started looking for scratch-resistant solutions for the bigger mobile displays. Here is a list of mobile phones and tablets that make use of the Gorilla Glass technology developed by Corning Incorporated from various makes: Though this list is sourced from Corning's website, there is a statement on that site indicating that this list is not necessarily comprehensive, as some companies have contractual arrangements with Corning that prohibit listing of said companies' products.
  • 2.2K
  • 26 Oct 2022
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