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Topic Review
Birkhoff's Representation Theorem
In mathematics, Birkhoff's representation theorem for distributive lattices states that the elements of any finite distributive lattice can be represented as finite sets, in such a way that the lattice operations correspond to unions and intersections of sets. The theorem can be interpreted as providing a one-to-one correspondence between distributive lattices and partial orders, between quasi-ordinal knowledge spaces and preorders, or between finite topological spaces and preorders. It is named after Garrett Birkhoff, who published a proof of it in 1937. The name “Birkhoff's representation theorem” has also been applied to two other results of Birkhoff, one from 1935 on the representation of Boolean algebras as families of sets closed under union, intersection, and complement (so-called fields of sets, closely related to the rings of sets used by Birkhoff to represent distributive lattices), and Birkhoff's HSP theorem representing algebras as products of irreducible algebras. Birkhoff's representation theorem has also been called the fundamental theorem for finite distributive lattices.
  • 1.5K
  • 10 Oct 2022
Topic Review
Acute and Obtuse Triangles
An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle. Acute and obtuse triangles are the two different types of oblique triangles — triangles that are not right triangles because they have no 90° angle.
  • 1.5K
  • 24 Oct 2022
Topic Review
Chest Drainage Management
Chest drains are used to preserve respiratory function and haemodynamic stability. One can also utilize a flutter valve, but these do not enable application of negative pressure. The generation of an active sub-atmospheric pressure or vacuum builds the basis of chest drain management. A vacuum is defined as “space with zero pressure” generating a difference in pressure between the pleural space and the atmosphere creates sub-atmospheric pressure in the pleural space, which is used to generate a vacuum in the chest drains.
  • 1.5K
  • 28 Oct 2022
Topic Review
Campylobacteriosis
Campylobacteriosis is an infection by the Campylobacter bacterium, most commonly C. jejuni. It is among the most common bacterial infections of humans, often a foodborne illness. It produces an inflammatory, sometimes bloody, diarrhea or dysentery syndrome, mostly including cramps, fever and pain.
  • 1.5K
  • 30 Oct 2022
Topic Review
LAG3
Lymphocyte-activation gene 3, also known as LAG-3, is a protein which in humans is encoded by the LAG3 gene. LAG3, which was discovered in 1990 and was designated CD223 (cluster of differentiation 223) after the Seventh Human Leucocyte Differentiation Antigen Workshop in 2000, is a cell surface molecule with diverse biologic effects on T cell function. It is an immune checkpoint receptor and as such is the target of various drug development programs by pharmaceutical companies seeking to develop new treatments for cancer and autoimmune disorders. In soluble form it is also being developed as a cancer drug in its own right.
  • 1.5K
  • 02 Nov 2022
Topic Review
Palatine Lion
The Palatine Lion (German: Pfälzer Löwe), less commonly the Palatinate Lion, is an heraldic charge (see also: heraldic lions). It was originally part of the family coat of arms of the House of Wittelsbach and is found today on many coats of arms of municipalities, counties and regions in South Germany and the Austrian Innviertel.
  • 1.5K
  • 08 Nov 2022
Topic Review
UBB.threads
UBB.threads (formerly WWWThreads) is an Internet forum software package originally written by Rick Baker. Written with PHP using a MySQL database backend, it is comparable to other forum software written in PHP. WWWThreads was originally written in Perl starting in 1997, then a PHP version was made in 2000. WWWThreads was notable for being one of the first forum software packages to support both flat and threaded discussion. In 2001, WWWThreads was acquired by Infopop Corporation (later known as Groupee, Inc. and now known as Social Strata), owners of the Ultimate Bulletin Board software. It was consequently renamed UBB.threads. After WWWThreads' acquisition by Infopop, the Perl version of WWWThreads was discontinued. The last Perl version of WWWThreads was version 5.4.3. All subsequent versions of UBB.threads starting with version 5.5 were released in PHP only. UBB.threads 6.0 was released in the spring of 2002. The current version is 7.6.2. On January 1, 2010, UBB.threads was spun off from Social Strata, and sold to Mindraven, Inc. However, in June 2011, UBB.threads was sold to UBB Systems.
  • 1.5K
  • 09 Nov 2022
Topic Review
Solar Desalination
Desalination is a capital-intensive process that requires a significant amount of energy, and since it is now mostly powered by fossil fuels across the globe, it has the potential to leave a significant carbon footprint. 
  • 1.5K
  • 18 Nov 2022
Topic Review
Host Defense and Pathogenesis in Staphylococcus aureus
Staphylococcus aureus is a versatile pathogen known to cause hospital- and community-acquired, foodborne, and zoonotic infections. As a multi-faceted pathogen, it is essential to consolidate the knowledge on its pathogenesis, including the mechanisms of virulence regulation, development of antimicrobial resistance and biofilm formation, to make it more amenable to classical and novel therapeutic strategies such as those based on nanomaterials.
  • 1.5K
  • 08 Feb 2023
Topic Review
Electrocatalytic CO2 Reduction to Formate and Formic acid
The electrocatalytic CO2 reduction reaction (CO2RR) to formic acid has gained significant attention as a potential environmentally friendly approach to reducing CO2 emissions and producing carbon-neutral liquid fuels. However, several challenges must be addressed to achieve the production of high-purity and high-concentration formic acid through CO2RR. One major challenge is the formation of a formate mixture instead of pure formic acid in conventional reactors. This requires costly downstream purification and concentration processes to obtain pure formic acid. 
  • 1.5K
  • 19 Jun 2023
Topic Review
Use of Plant Extracts as Sustainable Corrosion Inhibitors
Corrosion inhibitors have traditionally been utilised to protect copper alloy sculptures from corrosion despite the recognised environmental and human health risks. Knowing the associated toxicity, ongoing extensive research seeks alternative substances for corrosion reduction, giving rise to the emergence of green inhibitors. In this pursuit, plant extract inhibitors have gained attention, particularly in the heritage field. 
  • 1.5K
  • 28 Feb 2024
Topic Review
Graphene-Based Cathode Materials for Lithium-Ion Capacitors
Lithium-ion capacitors (LICs) are attracting increasing attention because of their potential to bridge the electrochemical performance gap between batteries and supercapacitors. LICs are still impeded by their inferior energy density, which is mainly due to the low capacity of the cathode. Graphene-based nanomaterials have been recognized as one of the most promising cathodes for LICs due to their unique properties, and exciting progress has been achieved. 
  • 1.5K
  • 13 Dec 2021
Topic Review
Biomarker-Driven Drug Development
Biomarker-driven drug development in age of personalized medicines. A biomarker life cycle is broken down into 3 stages - discovery, translation, and qualification. Researchers review current development strategies and technologies applied at each of these stages, with emphasis on the use of real-world data as an important source of supporting evidence.
  • 1.5K
  • 28 Apr 2022
Topic Review
Glycerol Phosphate-Containing Glycan in Mammals
Bacteria contain glycerol phosphate (GroP)-containing glycans, which are important constituents of cell-surface glycopolymers such as the teichoic acids of Gram-positive bacterial cell walls. These glycopolymers comprising GroP play crucial roles in bacterial physiology and virulence. Recently, the first identification of a GroP-containing glycan in mammals was reported as a variant form of O-mannosyl glycan on α-dystroglycan (α-DG). However, the biological significance of such GroP modification remains largely unknown.
  • 1.5K
  • 15 Nov 2021
Topic Review
Generation/Amplification of Mid-Infrared Few-Cycle Pulse
The mid-infrared (MIR) wavelength is usually defined in the range of 2–20 μm (500–5000 cm−1). With its unique properties and wide application prospects, lasers in this band have attracted a great deal of attention from researchers all over the world.
  • 1.5K
  • 30 Jul 2021
Topic Review
Fabrication of SiC Membranes
The scale of research for developing and applying silicon carbide (SiC) membranes for gas separation has rapidly expanded over the last few decades. The precursor-derived ceramic approaches for preparing SiC membranes include chemical vapor deposition (CVD)/chemical vapor infiltration (CVI) deposition and pyrolysis of polymeric precursor. Generally, SiC membranes formed using the CVD/CVI deposition route have dense structures, making such membranes suitable for small-molecule gas separation. On the contrary, pyrolysis of a polymeric precursor is the most common and promising route for preparing SiC membranes, which includes the steps of precursor selection, coating/shaping, curing for cross-linking, and pyrolysis. Among these steps, the precursor, curing method, and pyrolysis temperature significantly impact the final microstructures and separation performance of membranes.
  • 1.5K
  • 19 Feb 2023
Topic Review
Dementia
Dementia is a syndrome that is characterised by the decline of different cognitive abilities. A high rate of deaths and high cost for detection, treatments, and patients care count amongst its consequences. Although there is no cure for dementia, a timely diagnosis helps in obtaining necessary support, appropriate medication, and maintenance, as far as possible, of engagement in intellectual, social, and physical activities. The early detection of Alzheimer Disease (AD) is considered to be of high importance for improving the quality of life of patients and their families. In particular, Virtual Reality (VR) is an expanding tool that can be used in order to assess cognitive abilities while navigating through a Virtual Environment (VE).
  • 1.5K
  • 05 Feb 2021
Topic Review
Adenomyoma
The term ‘adenomyoma’ was coined around the year 1880 to designate the majority of mucosa-containing lesions related to the female genital tract. Currently, the term is more commonly applied to localised adenomyosis of the uterus.
  • 1.5K
  • 07 May 2021
Topic Review
NEV Battery GU and Recycling
Recycling and gradient utilization (GU) of new energy vehicle (NEV) power batteries plays a significant role in promoting the sustainable development of the economy. GU is an effective means to extend the life cycle of NEV batteries and recognize their value fully. GU refers to the retesting, screening, repairing, pairing, and reuse of power batteries that have been retired from NEV (their performance is reduced to less than 80% of initial performance) under relatively mild conditions. Batteries after GU can be disassembled, and they can be recycled (typically when the remaining capacity is less than 30%) to recover cobalt, lithium, and other precious metals to achieve the “win-win” of resource recovery and environmental protection.
  • 1.5K
  • 08 Jun 2021
Topic Review
Blount’s Disease
Blount’s disease is an idiopathic developmental abnormality affecting the medial proximal tibia physis resulting in a multi-planar deformity with pronounced tibia varus. A single cause is unknown, and it is currently thought to result from a multifactorial combination of hereditary, mechanical, and developmental factors.
  • 1.5K
  • 27 Jul 2021
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