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Topic Review
IrfanView
IrfanView (/ˈɪərfænvjuː/) is an image viewer, editor, organiser and converter program for Microsoft Windows. It can also play video and audio files, and has some image creation and painting capabilities. IrfanView is free for non-commercial use; commercial use requires paid registration. It is noted for its small size, speed, ease of use, and ability to handle a wide variety of graphic file formats. It was first released in 1996. IrfanView is named after its creator, Irfan Škiljan, from Jajce, Bosnia and Herzegovina, living in Vienna. The current version of IrfanView, 4.58, works under all versions of Windows from Windows 2000 SP4 to Windows 10, while all older versions are compatible with Windows 95/98/ME and can also be run in Linux under Wine and in macOS using WineBottler.
  • 3.3K
  • 30 Oct 2022
Topic Review
Monkeys in Chinese Culture
Monkeys, particularly macaques and monkey-like gibbons, have played significant roles in Chinese culture for over two thousand years. Some examples familiar to English speakers include the zodiacal Year of the Monkey, the Monkey King Sun Wukong in the novel Journey to the West, and Monkey Kung Fu.
  • 3.3K
  • 25 Nov 2022
Topic Review
Resonance
Resonance describes the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscillating force is applied at a resonant frequency of a dynamic system, the system will oscillate at a higher amplitude than when the same force is applied at other, non-resonant frequencies. Frequencies at which the response amplitude is a relative maximum are also known as resonant frequencies or resonance frequencies of the system. Small periodic forces that are near a resonant frequency of the system have the ability to produce large amplitude oscillations in the system due to the storage of vibrational energy. Resonance phenomena occur with all types of vibrations or waves: there is mechanical resonance, Orbital resonance, acoustic resonance, electromagnetic resonance, nuclear magnetic resonance (NMR), electron spin resonance (ESR) and resonance of quantum wave functions. Resonant systems can be used to generate vibrations of a specific frequency (e.g., musical instruments), or pick out specific frequencies from a complex vibration containing many frequencies (e.g., filters). The term resonance (from Latin resonantia, 'echo', from resonare, 'resound') originated from the field of acoustics, particularly the sympathetic resonance observed in musical instruments, e.g., when one string starts to vibrate and produce sound after a different one is struck.
  • 3.3K
  • 27 Oct 2022
Topic Review
Daisy Trees (Asteraceae) in Mexico
Mexico is floristically the fourth most species-rich country in the world, and Asteraceae is the most diverse vascular plant family in this country. The species exhibits a wide range of growth forms, but the tree-like habit, appropriately named daisy trees, is heavily underestimated, even though slightly different tree definitions are handled. Very little is known about their precise species number or conservation status in Mexico, so we update here the list of known Mexican daisy tree species, summarize their very diverse uses, present a general panorama of their present and future distribution, and discuss their conservation status. 
  • 3.3K
  • 06 Apr 2021
Topic Review
SOCH: The Mental Colonization Of India
India is a land of immense plurality, rich cultural heritage, and multiple forms of colonization since centuries. Though the physical colonization by the British ended in 1947, the mental colonization persists through several socio-economic and cultural mechanisms. This article discusses the concept of mental colonization in India, termed as "SOCH" (Spirit of Colonial Hangover), its historical roots, contemporary manifestations, and its struggle to seek and acquire indigenous identities and histories.
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  • 31 Oct 2024
Topic Review
Radiation Sensitivity in Hereditary Breast and Ovarian Cancer
Hereditary breast and ovarian cancer (HBOC) syndrome is a condition in which individuals have an increased risk of developing different types of cancer when compared to the general population. BRCA1 repair associated (BRCA1) and BRCA2 repair associated (BRCA2) genes are tumor suppressor genes that play a crucial role in cell, by repairing DNA damage. 
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  • 15 Jul 2022
Topic Review
Kelvin–Stokes Theorem
The Kelvin–Stokes theorem, named after Lord Kelvin and George Stokes, also known as the Stokes' theorem, the fundamental theorem for curls or simply the curl theorem, is a theorem in vector calculus on [math]\displaystyle{ \mathbb{R}^3 }[/math]. Given a vector field, the theorem relates the integral of the curl of the vector field over some surface, to the line integral of the vector field around the boundary of the surface. If a vector field [math]\displaystyle{ \mathbf{A} = (P(x, y, z), Q(x, y, z), R(x, y, z)) }[/math] is defined in a region with smooth oriented surface [math]\displaystyle{ \Sigma }[/math] and has first order continuous partial derivatives then: where [math]\displaystyle{ \partial \Sigma }[/math] is boundary of region with smooth surface [math]\displaystyle{ \Sigma }[/math]. The above classical Kelvin-Stokes theorem can be stated in one sentence: The line integral of a vector field over a loop is equal to the flux of its curl through the enclosed surface. The Kelvin–Stokes theorem is a special case of the "generalized Stokes' theorem." In particular, a vector field on [math]\displaystyle{ \mathbb{R}^3 }[/math] can be considered as a 1-form in which case its curl is its exterior derivative, a 2-form.
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  • 02 Nov 2022
Topic Review
Mechanism
Mechanism is the belief that natural wholes (principally living things) are similar to complicated machines or artifacts, composed of parts lacking any intrinsic relationship to each other. The doctrine of mechanism in philosophy comes in two different flavors. They are both doctrines of metaphysics, but they are different in scope and ambitions: the first is a global doctrine about nature; the second is a local doctrine about humans and their minds, which is hotly contested. For clarity, we might distinguish these two doctrines as universal mechanism and anthropic mechanism.
  • 3.3K
  • 11 Oct 2022
Topic Review
Sapiosexuality
Sexual identity is how one thinks of oneself in terms of to whom one is romantically or sexually attracted. Sexual identity may also refer to sexual orientation identity, which is when people identify or dis-identify with a sexual orientation or choose not to identify with a sexual orientation. Sexual identity and sexual behavior are closely related to sexual orientation, but they are distinguished, with identity referring to an individual's conception of themselves, behavior referring to actual sexual acts performed by the individual, and sexual orientation referring to romantic or sexual attractions toward persons of the opposite sex or gender, the same sex or gender, to both sexes or more than one gender, or to no one. Historical models of sexual identity have tended to view its formation as a process undergone only by sexual minorities, while more contemporary models view the process as far more universal and attempt to present sexual identity within the larger scope of other major identity theories and processes.
  • 3.3K
  • 28 Nov 2022
Topic Review
Bank Diversification and Firm Investment Decisions
Firms are financially constrained as well as there being a positive relationship between cash flow and investment among listed firms. Additionally, bank diversification significantly reduces the investment-cash flow sensitivity of firms, suggesting that bank diversification mitigates the financial constraints to borrowing firms. Moreover, the multi-diversification of a bank compared to single-diversification will have greater impact on mitigating the firms’ financial constraints on investment. Thus, bank diversification strategies are proposed in a bank-based financial system, leading to the easing of the borrowing firms’ financial constraints to investments.
  • 3.3K
  • 14 Oct 2022
Topic Review
Windows Defender
Microsoft Defender (known as Windows Defender before Windows 10 November 2019 Update or Windows Defender Antivirus in Windows 10 Creators Update and later) is an anti-malware component of Microsoft Windows. It was first released as a downloadable free anti-spyware program for Windows XP, and was later shipped with Windows Vista and Windows 7. It has evolved into a full antivirus program, replacing Microsoft Security Essentials as part of Windows 8 and later versions.
  • 3.3K
  • 22 Nov 2022
Topic Review
Hydraulics
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the applied engineering using the properties of fluids. In its fluid power applications, hydraulics is used for the generation, control, and transmission of power by the use of pressurized liquids. Hydraulic topics range through some parts of science and most of engineering modules, and cover concepts such as pipe flow, dam design, fluidics and fluid control circuitry. The principles of hydraulics are in use naturally in the human body within the vascular system and erectile tissue. Free surface hydraulics is the branch of hydraulics dealing with free surface flow, such as occurring in rivers, canals, lakes, estuaries and seas. Its sub-field open-channel flow studies the flow in open channels. The word "hydraulics" originates from the Greek word ὑδραυλικός (hydraulikos) which in turn originates from ὕδωρ (hydor, Greek for water) and αὐλός (aulos, meaning pipe).
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  • 28 Nov 2022
Topic Review
Atmospheric Pressure Plasma Surface Treatment
Atmospheric plasma treatment is an effective and economical surface treatment technique. The main advantage of this technique is that the bulk properties of the material remain unchanged while the surface properties and biocompatibility are enhanced.
  • 3.3K
  • 09 Apr 2021
Topic Review
Infrared Thermography for Condition-Based Monitoring in Electrical Energy
Condition-based monitoring (CBM) has emerged as a critical instrument for lowering the cost of unplanned operations while also improving the efficacy, execution, and dependability of tools. Thermal abnormalities can be thoroughly examined using thermography for condition monitoring.
  • 3.3K
  • 02 Sep 2022
Topic Review
Sound Attenuators
A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control 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 attenuator consists of an baffle within the ductwork. These baffles often contain sound-absorbing materials. The physical dimensions and baffle configuration of sound attenuators 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 attenuators can achieve broader band attenuation in relatively short lengths. Certain types of sound attenuators are essentially a Helmholtz resonator used as a passive noise-control device.
  • 3.3K
  • 27 Oct 2022
Topic Review
Lozenge
A lozenge ( /ˈlɒz.ɪndʒ/), ◊ – often referred to as a diamond – is a form of rhombus. The definition of lozenge is not strictly fixed, and it is sometimes used simply as a synonym (from the French: losange) for rhombus. Most often, though, lozenge refers to a thin rhombus—a rhombus with two acute and two obtuse angles, especially one with acute angles of 45°. The lozenge shape is often used in parquetry (with acute angles that are 360°/n with n being an integer higher than 4, because they can be used to form a set of tiles of the same shape and size, reusable to cover the plane in various geometric patterns as the result of a tiling process called tessellation in mathematics) and as decoration on ceramics, silverware and textiles. It also features in heraldry and playing cards.
  • 3.3K
  • 29 Nov 2022
Topic Review
Bile Acids in the Liver and Gut Metabolism
Bile acids (BAs) represent heterogeneous amphipathic molecules that have both polar (water-soluble or hydrophilic) and apolar (water-insoluble or hydrophobic) parts, and therefore they can dissolve in water as well as in fat. The regulation of cholesterol homeostasis remains their main role in the host. The better water solubility in comparison with their precursor promotes cholesterol removal from the human body. The proper bile ratio of BAs and cholesterol prevents cholesterol precipitation and further formation of gallstones; therefore, the loss of BAs increases the risk of cholesterol stone development.
  • 3.3K
  • 08 Feb 2023
Topic Review
The Oncogenic Potential of SARS-CoV-2
Some viruses are known to be associated with the onset of specific cancers. Seven of these microorganisms, recognized as oncogenic viruses or oncoviruses, promote tumorigenesis in humans, converting normal cells into cancer cells through the modulation of central metabolic pathways or the impairment of genomic integrity mechanisms, consequently inhibiting the apoptotic machinery and/or enhancing cell proliferation. Actually, research indicates that SARS-CoV-2 infection and COVID-19 progression may predispose recovered patients to cancer onset and accelerate cancer development. This hypothesis is based on the growing evidence regarding the ability of SARS-CoV-2 to modulate oncogenic pathways, promoting chronic low-grade inflammation and causing tissue damage. As for SARS-CoV-2, its role as an oncogenic virus seems to occur through the inhibition of oncosuppressors or controlling the metabolic and autophagy pathways in the infected cells. On the other hand, looking at the SARS-CoV-2─cancer relationship from an opposite perspective, oncolytic effects and anti-tumor immune response were triggered by SARS-CoV-2 infection in some cases.
  • 3.3K
  • 11 May 2023
Topic Review
Kīla (Buddhism)
The kīla or phurba (Sanskrit Devanagari: कील; IAST: kīla; Tibetan: ཕུར་པ or ཕུར་བ, Wylie: phur ba, alternate transliterations and English orthographies: phurpa, phurbu, purbha, or phurpu) is a three-sided peg, stake, knife, or nail-like ritual implement traditionally associated with Indo-Tibetan Buddhism, Bön, and Indian Vedic traditions. The kīla is associated with the practice of the yidam (Sanskrit ishtadevata, Tibetan yidam) or meditational deity Vajrakīla (वज्रकील) or Vajrakīlaya (Tibetan Dorje Phurba).
  • 3.3K
  • 23 Nov 2022
Topic Review
Fractional Schrödinger Equation
The fractional Schrödinger equation is a fundamental equation of fractional quantum mechanics. It was discovered by Nick Laskin (1999) as a result of extending the Feynman path integral, from the Brownian-like to Lévy-like quantum mechanical paths. The term fractional Schrödinger equation was coined by Nick Laskin.
  • 3.3K
  • 24 Oct 2022
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