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Topic Review
CO2 Hydrogenation to Methanol
High-efficiency utilization of CO2 facilitates the reduction of CO2 concentration in the global atmosphere and hence the alleviation of the greenhouse effect. The catalytic hydrogenation of CO2 to produce value-added chemicals exhibits attractive prospects by potentially building energy recycling loops.
  • 2.2K
  • 15 Apr 2022
Topic Review
Liquid Cooling and Ventilation Garment
A Liquid Cooling Garment (LCG) is a form-fitting garment that is used to remove body heat from the wearer in environments where evaporative cooling from sweating and open-air convection cooling does not work, or the wearer has a biological problem that hinders self-regulation of body temperature. A Liquid Cooling and Ventilation Garment (LCVG) has additional crush-resistant ventilation ducts, which draw moist air from the wearer's extremities, keeping the wearer dry. In a fully enclosing suit where exhaled breathing air can enter the suit, the exhaled air is moist and can lead to an uncomfortable feeling of dampness or wetness. While this technology is most commonly associated with space suits, it is also used in a wide range of Earth-bound applications where open-air cooling is difficult or impossible to achieve, such as fire fighting, working in a steel mill and increasingly by surgeons during long or strenuous procedures.
  • 2.2K
  • 08 Oct 2022
Topic Review
Modification of the Surface of Wood with Plasma
Wood modification is an excellent and increasingly used method to expand the application of woody materials. Traditional methods, such as chemical or thermal, have been developed for the targeted improvement of some selected properties, unfortunately typically at the expense of others. These methods generally alter the composition of wood, and thus its mechanical properties, and enhance dimensional stability, water resistance, or decrease its susceptibility to microorganisms. Although conventional methods achieve the desired properties, they require a lot of energy and chemicals, therefore research is increasingly moving towards more environmentally friendly processes. The advantage of modern methods is that in most cases, they only modify the surface and do not affect the structure and mechanical properties of the wood, while reducing the amount of chemicals used. Cold plasma surface treatment is one of the cheapest and easiest technologies with a limited burden on the environment
  • 2.2K
  • 27 May 2022
Biography
John Hick
John Hick JP DL MP FRSA (2 July 1815 – 2 February 1894) was a wealthy[1] English industrialist, art collector and Conservative Party politician who sat in the House of Commons from 1868 to 1880.[2][3] He is associated with the improvement of steam-engines for cotton mills and the work of his firm Hick, Hargreaves and Co. universal in countries where fibre was spun or fabrics woven.[4] Hick
  • 2.2K
  • 01 Dec 2022
Topic Review
Different Anisotropic-Strata Interface and Refraction
The strata model inside the earth is close to physical reality. The strata layers can be macro-anisotropic but transversely isotropic, where some are vertically symmetric and the others are not. The macroscopic anisotropy is significant for seismic waves with long wave-length regarding propagation, reflection, refraction, and polarization. This topic review provides the most recent theoretical development related to geophysical applications. 
  • 2.2K
  • 03 Nov 2020
Topic Review
Drying
Drying is one of the oldest methods for food preservation that removes the water from fruit and makes it available for consumption throughout the year. Dried fruits can be produced by small- and large-scale processors, which makes them a very popular food among consumers and food manufacturers. The most frequent uses of drying technology include osmotic dehydration, vacuum drying, freeze-drying, and different combinations of other drying technologies. However, drying may provoke undesirable changes with respect to physiochemical, sensory, nutritional, and microbiological quality. The energy efficiency of drying processes and the quality of dried fruits are crucial factors in fruit drying. Recent research shows that innovative technologies such as ultrasound, pulsed electric field, or high pressure may be used as a pretreatment or in combination with traditional drying technologies for process intensification. This could result in quality improvements of dried fruits and enhanced efficiency and capacity of the production process, with a positive impact on environmental and economic benefits.
  • 2.2K
  • 19 Feb 2021
Topic Review
Nanostructured Materials-Enabled Biosensors
A biosensor is an integrated receptor-transducer device, which can convert a biological response into an electrical signal.
  • 2.2K
  • 18 Mar 2021
Topic Review
Nanoporous Anodic Alumina
Nanoporous Anodic Alumina (NAA) is formed by the electrochemical anodization of pure aluminum wafers and consists of a parallel array of pores surrounded by hexagonal cells of aluminum oxide (alumina).
  • 2.2K
  • 25 Mar 2021
Topic Review
Syndrome of Undifferentiated Recurrent Fever
Syndrome of undifferentiated recurrent fever (SURF) is a heterogeneous group of autoinflammatory diseases (AID) characterized by self-limiting episodes of systemic inflammation without a confirmed molecular diagnosis, not fulfilling the criteria for periodic fever, aphthous stomatitis, pharyngitis and adenopathy (PFAPA) syndrome.
  • 2.2K
  • 13 May 2021
Topic Review
Ubiquitin-Specific Peptidase (USP) Inhibitors
Ubiquitylation and deubiquitylation are reversible protein post-translational modification (PTM) processes involving the regulation of protein degradation under physiological conditions. Loss of balance in this regulatory system can lead to a wide range of diseases, such as cancer and inflammation. As the main members of the deubiquitinases (DUBs) family, ubiquitin-specific peptidases (USPs) are closely related to biological processes through a variety of molecular signaling pathways, including DNA damage repair, p53 and transforming growth factor-β (TGF-β) pathways.
  • 2.2K
  • 11 Jun 2021
Topic Review
Hedgehog Signaling Pathway
The hedgehog (Hh) pathway is a sophisticated conserved cell signaling pathway that plays an essential role in controlling cell specification and proliferation, survival factors, and tissue patterning formation during embryonic development.
  • 2.2K
  • 10 Jan 2022
Topic Review
Seaplane
A seaplane is a powered fixed-wing aircraft capable of taking off and landing (alighting) on water. Seaplanes are usually divided into two categories based on their technological characteristics: floatplanes and flying boats; the latter are generally far larger and can carry far more. Seaplanes that can also take off and land on airfields are in a subclass called amphibious aircraft, or amphibians. Seaplanes were sometimes called hydroplanes, but currently this term applies instead to motor-powered watercraft that use the technique of hydrodynamic lift to skim the surface of water when running at speed. The use of seaplanes gradually tapered off after World War II, partially because of the investments in airports during the war. In the 21st century, seaplanes maintain a few niche uses, such as for aerial firefighting, air transport around archipelagos, and access to undeveloped or roadless areas, some of which have numerous lakes.
  • 2.2K
  • 09 Nov 2022
Topic Review
MultiOTP
multiOTP is an open source PHP class, a command line tool, and a web interface that can be used to provide an operating-system-independent, strong authentication system. multiOTP is OATH-certified since version 4.1.0 and is developed under the LGPL license. Starting with version 4.3.2.5, multiOTP open source is also available as a virtual appliance - as a standard OVA file, a customized OVA file with open-vm-tools, and also as a Hyper-V downloadable file.Template:Jargon-statement A QR code is generated automatically when printing the user-configuration page.
  • 2.2K
  • 21 Nov 2022
Topic Review
Govardhana Sila
A Govardhana Shila is rock from the Govardhan Hill in Braj. Govardhan Hill holds a unique position in Hindu scriptures related to Krishna, the land called Vrij where He was born. Known as Govardhan or Giriraj and being the sacred center of Braj, it is identified as a natural form of Krishna. Indian art overwhelmingly prefers the iconic image, but some aniconism does occur in folk worship, early Buddhism, Shiva's Banalinga, and Vishnu's Saligrama Sila (murthi)). They have solar significance, and their use in worship predates the Hindu period in India . The stone is usually brown in color. Govardhan, a very famous place of Hindu pilgrimage, is located 26 km west of Mathura (154 km from New Delhi) on the state highway to Deeg. Govardhan is located on a narrow sandstone hill known as Giriraj which is about 8 km in length. When Chaitanya Mahaprabhu did parikrama (circumambulation) of Govardhana Hill while visiting Vrindavana in 1515 AD, he did not walk on the hill because he considered Govardhana as non-different from Lord Krishna. Therefore, traditionally Vaishnavas don’t step on Govardhan hill.
  • 2.2K
  • 01 Dec 2022
Topic Review
Seahorse Male Pregnancy
Seahorses, together with sea dragons and pipefishes, belong to the Syngnathidae family of teleost fishes. Seahorses and other Syngnathidae species have a very peculiar feature: male pregnancy. Among different species, there is a gradation of paternal involvement in carrying for the offspring, from a simple attachment of the eggs to the skin surface, through various degrees of egg coverage by skin flaps, to the internal pregnancy within a brood pouch, which resembles mammalian uterus with the placenta. Because of the gradation of parental involvement and similarities to mammalian pregnancy, seahorses are a great model to study the evolution of pregnancy and the immunologic, metabolic, cellular, and molecular processes of pregnancy and embryo development. Seahorses are also very useful for studying the effects of pollutants and environmental changes on pregnancy, embryo development, and offspring fitness. 
  • 2.2K
  • 15 Jun 2023
Topic Review
Applications of Metallic Glasses
Metallic glasses can be a perfect alternative to conventional crystalline biomaterials (such as 316L stainless steel, Ti or Ti-based alloys, Zr or Zr-based alloys, Co-Cr alloys, etc.) when used as coatings for surgical devices and implants inside the human body. Owing to their outstanding electrocatalytic activity and durability, metallic glasses can be considered prominent candidates for energy-storage and -conversion devices, such as fuel and electrolysis cells, and batteries. Metallic-glass systems are gaining substantial momentum in the micro- and nano-imprinting of optoelectronic devices.
  • 2.2K
  • 19 Dec 2023
Topic Review
The Bioavailability of Drugs
Drug bioavailability is a crucial aspect of pharmacology, affecting the effectiveness of drug therapy. Understanding how drugs are absorbed, distributed, metabolized, and eliminated in patients’ bodies is essential to ensure proper and safe treatment. In addition to biochemical activity, bioavailability also plays a critical role in achieving the desired therapeutic effects. This may seem obvious, but it is worth noting that a drug can only produce the expected effect if the proper level of concentration can be achieved at the desired point in a patient’s body. Given the differences between patients, drug dosages, and administration forms, understanding and controlling bioavailability has become a priority in pharmacology. 
  • 2.2K
  • 03 Jan 2024
Topic Review
Plant Cellulose Nanofibre-Based Aerogels
Cellulose nanomaterials from plant fibre provide potential applications in biomedical. The biomedical application of nanocellulose isolated from plant fibre, which is a carbohydrate-based source, is very viable in the 21st century. The essential characteristics of plant fibre-based nanocellulose, which include its molecular, tensile and mechanicalproperties, as well as its biodegradability potential, have been widely explored for functional materials in the preparation of aerogel. Plant cellulose nano fibre (CNF)-based aerogels are novel functional materials that have attracted remarkable interest. In recent years, CNF aerogel has been extensively used in the biomedical field due to its biocompatibility, renewability and biodegradability. The effective surface area of CNFs influences broad applications in biological and medical studies such as sustainable antibiotic delivery for wound healing, the preparation of scaffolds for tissue cultures, the development of drug delivery systems, biosensing and an antimicrobial film for wound healing. Many researchers have a growing interest in using CNF-based aerogels in the mentioned applications. The application of cellulose-based materials is widely reported in the literature. However, only a few studies discuss the potential of cellulose nanofibre aerogel in detail. The potential applications of CNF aerogel include composites, organic–inorganic hybrids, gels, foams, aerogels/xerogels, coatings and nano-paper, bioactive and wound dressing materials and bioconversion.
  • 2.2K
  • 19 Aug 2020
Topic Review
Spandrel
In evolutionary biology, a spandrel is a phenotypic trait that is a byproduct of the evolution of some other characteristic, rather than a direct product of adaptive selection. Stephen Jay Gould and Richard Lewontin brought the term into biology in their 1979 paper "The Spandrels of San Marco and the Panglossian Paradigm: A Critique of the Adaptationist Programme". Adaptationism is a point of view that sees most organismal traits as adaptive products of natural selection. Gould and Lewontin sought to temper what they saw as adaptationist bias by promoting a more structuralist view of evolution. The term "spandrel" originates from architecture, where it refers to the roughly triangular spaces between the top of an arch and the ceiling.
  • 2.2K
  • 26 Oct 2022
Topic Review
Aromatic Polyimide Films for Electronic Applications
Aromatic polyimides have excellent thermal stability, mechanical strength and toughness, high electric insulating properties, low dielectric constants and dissipation factors, and high radiation and wear resistance, among other properties, and can be processed into a variety of materials, including films, fibers, carbon fiber composites, engineering plastics, foams, porous membranes, coatings, etc. Aromatic polyimide materials have found widespread use in a variety of high-tech domains, including electric insulating, microelectronics and optoelectronics, aerospace and aviation industries, and so on, due to their superior combination characteristics and variable processability. In recent years, there have been many publications on aromatic polyimide materials, including several books available to readers. In this review, the representative progress in aromatic polyimide films for electronic applications, especially in our laboratory, will be described.
  • 2.2K
  • 05 Apr 2022
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