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Topic Review
Building-Integrated Photovoltaics in Singapore
Building-integrated photovoltaics (BIPVs) represent an effective technology to attain zero energy buildings (ZEBs) via solar energy use. A BIPV system can seamlessly integrate PV modules into external building surfaces, such as walls, roofs, shading devices, and decorative components. Moreover, it can generate clean energy. From an environmental and economic perspective, PV energy generation provides more advantages than fossil fuel-based energy generation. First, in contrast to the limited storage of fossil fuels, the solar radiation reaching the Earth’s surface every day contains 10,000 times the energy requirements of humans on a daily basis. Second, the manufacturing process of PV modules produces only a small amount of carbon dioxide (20–30 g carbon dioxide equivalent (CO2e/kWh)).
  • 4.4K
  • 30 Aug 2022
Topic Review
Sadhu
A sadhu (IAST: sādhu (male), sādhvī or sādhvīne (female)), also spelled saddhu, is a religious ascetic, mendicant (monk) or any holy person in Hinduism and Jainism who has renounced the worldly life. They are sometimes alternatively referred to as jogi, sannyasi or vairagi. It literally means one who practises a ″sadhana″ or keenly follows a path of spiritual discipline. Although the vast majority of sādhus are yogīs, not all yogīs are sādhus. The sādhu is solely dedicated to achieving mokṣa (liberation), the fourth and final aśrama (stage of life), through meditation and contemplation of Brahman. Sādhus often wear simple clothing, such saffron-coloured clothing in Hinduism, white or nothing in Jainism, symbolising their sannyāsa (renunciation of worldly possessions). A female mendicant in Hinduism and Jainism is often called a sadhvi, or in some texts as aryika.
  • 4.4K
  • 10 Nov 2022
Topic Review
Areal Density (Computer Storage)
Areal density is a measure of the quantity of information bits that can be stored on a given length of track, area of surface, or in a given volume of a computer storage medium. Generally, higher density is more desirable, for it allows more data to be stored in the same physical space. Density therefore has a direct relationship to storage capacity of a given medium. Density also generally affects the performance within a particular medium, as well as price.
  • 4.4K
  • 22 Nov 2022
Topic Review
Modular Multilevel Converter Submodules
Voltage-source converter (VSC) HVDC systems based on modular multilevel converters (MMCs) combine the system advantages of fast and independent active and reactive power control, passive network supply, black start capabilities, frequency support and power oscillation damping with power electronics benefits such as scalable design, increased reliability, lower conversion losses and reduced filtering requirements, thus offering a commercially competitive solution. The structure of the SM is an important element of the MMC. This has been the case, where substantial SM topologies have been presented, specifically aimed at extending the functionalities of the MMC, in many cases aligned with niche applications of the converter rather than generic use as a VSC converter.
  • 4.4K
  • 18 Mar 2022
Topic Review
Charivari
Charivari, shivaree, chivaree, or skimmington (ride) was a folk custom in which a mock parade was staged through a community accompanied by a discordant mock serenade. Since the crowd aimed to make as much noise as possible by beating on pots and pans or anything that came to hand these parades are often referred to as rough music. Parades were of three types. In the first, and generally most violent form, a wrongdoer or wrongdoers might be dragged from their home or place of work and paraded by force through a community. In the process they were subject to the derision of the crowd, they might be pelted and frequently a victim or victims were dunked at the end of the proceedings. A safer form involved a neighbour of the wrongdoer impersonating the victim whilst being carried through the streets. The impersonator was obviously not himself punished and he often cried out or sang ribald verses mocking the wrongdoer. In the common form, an effigy was employed instead, abused and often burnt at the end of the proceedings. Communities used "rough music" to express their disapproval of different types of violation of community norms. For example, they might target marriages of which they disapproved such as a union between an older widower and much younger woman, or the too early remarriage by a widow or widower. Villages also used charivari in cases of adulterous relationships, against wife beaters, and unmarried mothers. It was also used as a form of shaming upon husbands who were beaten by their wives and had not stood up for themselves. In some cases, the community disapproved of any remarriage by older widows or widowers. Charivari is the original French word, and in Canada it is used by both English and French speakers. Chivaree became the common variant in Ontario, Canada. In the United States, the term shivaree is more common. As species of popular justice rituals Charivaric events were carefully planned and they were often staged at times of traditional festivity thereby blending delivering justice and celebration.
  • 4.4K
  • 17 Oct 2022
Topic Review
BlackBerry Messenger
BlackBerry Messenger, also known as BBM, is a proprietary Internet-based instant messenger and videotelephony application included on BlackBerry devices that allows messaging and voice calls between BlackBerry, iOS, Android, and Windows Mobile users. The consumer edition is currently developed by Emtek under license from BlackBerry Limited (formerly known as Research In Motion), and was first released in August 2005. Messages sent via BlackBerry Messenger are sent over the Internet and use the BlackBerry PIN system. Many service providers allow sign-in to BlackBerry Messenger using a dedicated BlackBerry data plan. Exchanging messages is possible to a single person or via dedicated discussion or chat groups, which allow multiple BlackBerry devices to communicate in a single session. In addition to offering text-based instant messages, BlackBerry Messenger also allows users to send pictures, voicenotes (audio recordings), files (up to 16 MB), share real time location on a map, stickers and a wide selection of emoticons. Communication was only possible between BlackBerry devices until late 2013 when BBM was released on iOS and Android systems. 300 million Stickers have been shared. Daily, 150,000 BBM Voice Calls are placed. There are more than 190 million BBM users worldwide as of 2015, and BlackBerry infrastructure handled 30 petabytes of data traffic each month by early 2013. BBM was very popular in the late 2000s and the break of the decade, before it started to lose out to rivals like Apple's iMessage and the cross-platform service WhatsApp. As of April 2016, Indonesia is the only country where BBM is the most popular messaging app - installed on 87.5% of Android devices in the country.
  • 4.4K
  • 25 Oct 2022
Topic Review
Cygnus
Cygnus, known as the Swan, is a prominent constellation in the northern celestial hemisphere. Its distinctive shape resembles a flying bird with outstretched wings, earning it the nickname "the Northern Cross." Cygnus is rich in celestial wonders, including the famous binary star system Albireo, the North America Nebula, and the Veil Nebula complex.
  • 4.4K
  • 08 Mar 2024
Topic Review
Molecular Imprinting
Molecular imprinting is a technique for creating artificial recognition sites on polymer matrices that complement the template in terms of size, shape, and spatial arrangement of functional groups. The main advantage of Molecularly Imprinted Polymers (MIP) as the polymer for use with a molecular imprinting technique is that they have high selectivity and affinity for the target molecules used in the molding process. 
  • 4.4K
  • 30 Nov 2021
Topic Review
Saudi Arabian Plants
The kingdom of Saudi Arabia (SA) ranks fifth in Asia in terms of area. It features broad biodiversity, including interesting flora, and was the historical origin of Islam. It is endowed with a large variety of plants, including many herbs, shrubs, and trees. Many of these plants have a long history of use in traditional medicine.
  • 4.4K
  • 13 Jan 2023
Topic Review
Tetraspanins of extracellular vesicles
Tetraspanins are transmembrane proteins with ability to interact with each other and with other non-tetraspanin partners, building up a complex called tetraspanin web. This dynamic structure participates in many cellular processes. Although currently, the tetraspanin proteins found in extracellular vesicles are mostly applied as markers, increasing evidence points to their role in extracellular vesicle biogenesis, cargo selection, cell targeting, and cell uptake under both physiological and pathological conditions.
  • 4.4K
  • 02 Nov 2020
Topic Review
Wind Turbine Blade Failures
The wind turbine is a complex structure. Although there is no single approach and there is variability in the commercial designs, a typical WTB is a thin-walled multi-cellular hollow airfoil shaped cross-section. For its manufacture, a number of materials and material systems are used for structural purposes (fibre composites and sandwich composite systems) as well as aesthetic purposes (primers, UV gel coats, paint, etc). The potential causes of wind turbine blade failures can be classified into the following four categories:1. damage from lightning;2. failures due to fatigue;3. leading edge erosion;4. damage from icing.The types of damage caused to wind turbine blades—originating from the above four different sources—along with their significance to the turbine’s performance and secure operation, are detailed in the following sub-sections.
  • 4.4K
  • 11 Oct 2021
Topic Review
Caste Spaces in Pakistan
This study is an attempt to understand the appropriation of spaces of Dalits by Sindhi progressive activists and short story writers in Pakistan as they construct or rather undermine caste at the anvil of religion and gender to reframe their own religio-political agenda premised on political Sufism or Sufi nationalism. I specifically discuss the narratives emergent of the three popular short stories that are reframed as having exceptional emancipatory potential for the Dalits.  Assessing the emancipatory limits of Sindhi progressive narrative, I argue while that the short stories purport to give fuller expression to religious, gender-based and class dimension of the problematic, it elides the problem of casteism and the subsequent existential demand of Dalit emancipation.  Given the hegemonic influence of local Ashrafia class, the internal caste frictions are glossed over through political Sufism or Sindhi nationalism. This gloss of politicised Sufism hampers Dalit agency and rather facilitates the appropriation of Dalit spaces by Ashrafia class. This leads to conclude that the seemingly progressive literary-political narratives framed in religio-political idiom may offer to the oppressed not more than a token sympathy, compassion, self-pity and false pride in legends. Instead, they allow the appropriation of spaces and events of the oppressed, and the objectification of oppressed bodies by the oppressor.
  • 4.4K
  • 05 Jan 2021
Topic Review
Types of Electrochemical Energy Storage Devices
Researchers are increasingly paying attention to sustainable methods for storing energy. Many researchers are now concentrating their efforts on the development and exploration of novel materials for use in energy storage devices due to the limited supply of existing energy sources such as oil, coal, and natural gas, and escalating regional tensions. Because of these issues, sustainable renewable energy sources have been touted as an alternative to nonrenewable fuels. Deployment of renewable energy sources requires efficient and reliable energy storage devices due to their intermittent nature. High-performance electrochemical energy storage technologies with high power and energy densities are heralded to be the next-generation storage devices. Transition metal chalcogenides (TMCs) have sparked interest among electrode materials because of their intriguing electrochemical properties.
  • 4.4K
  • 09 Jun 2022
Topic Review
Features New to Windows 8
The transition from Windows 7 to Windows 8 introduced a number of new features across various aspects of the operating system. These include a greater focus on optimizing the operating system for touchscreen-based devices (such as tablets) and cloud computing.
  • 4.4K
  • 03 Nov 2022
Topic Review
Leprechaun
A leprechaun (Irish: leipreachán/luchorpán) is a type of fairy of the Aos Sí in Irish folklore. They are usually depicted as little bearded men, wearing a coat and hat, who partake in mischief. They are solitary creatures who spend their time making and mending shoes and have a hidden pot of gold at the end of the rainbow. If captured by a human, they often grant three wishes in exchange for their freedom. Like other Irish fairies, leprechauns may be derived from the Tuatha Dé Danann. Leprechaun-like creatures rarely appear in Irish mythology and only became prominent in later folklore.
  • 4.4K
  • 04 Nov 2022
Topic Review
Plant-Based Milk Production
Growing concerns about the environmental impacts, healthiness, and ethical implications of eating animal-based products, such as meat, eggs, and milk, has led to an increase in demand for plant-based alternatives.  Plant-based milk substitutes can be created using two main approaches. First, certain oil-rich plant tissues (such as almonds, cashews, coconut flesh, flaxseeds, or soy beans) can be converted into colloidal suspensions using size-reduction and isolation techniques (such as soaking, grinding, enzyme-treatment, filtration, and centrifugation).  Second, plant-based oils (such as corn, flaxseed soybean, or sunflower oil) can be homogenized with water in the presence of plant-based proteins (such as pea, legume, or soy proteins), polysaccharides (gum arabic or beet pectin), phospholipids (such as soy or sunflower lecithin), or saponins (such as quillaja saponin) to create an oil-in-water emulsion with similar characteristics to bovine milk.   
  • 4.4K
  • 28 Oct 2020
Topic Review
Dowel-Type Joints in Timber Structures
Dowel-type joints are one of the most common connectors. They basically consist of one or more cylindrical steel dowels inserted into aligned holes of different elements. The dowels transmit loads between the elements, being subjected to opposite compressive forces on the contact area with each element. This causes the dowels to work under bending moments and shear forces. There is an almost infinite number of possible configurations for dowel-type joints.
  • 4.4K
  • 09 Oct 2021
Topic Review Peer Reviewed
Fungal Secondary Metabolism
Fungal secondary metabolites (SMs) comprise a vast collection of compounds expendable for these organisms under laboratory conditions. They exhibit enormous chemical diversity, and usually belong to four major families: terpenoids, polyketides, non-ribosomal peptides, or a combination of the last two. Their functions are very diverse and are normally associated with a greater fitness of the producing fungi in their environment, which often compete with other microorganisms or interact with host plants. Many SMs have beneficial applications, e.g., as antibiotics or medical drugs, but others, known as mycotoxins, are harmful to health.
  • 4.4K
  • 13 Apr 2022
Topic Review
Epidemiology and Consequences of ARFID
Avoidant/Restrictive Food Intake Disorder (ARFID) is an avoidant/restrictive food intake disorder identified in the DSM V (Diagnostic and Statistical Manual of Mental Disorders) diagnostic criteria for mental disorders in 2013, which replaced feeding disorder of infancy and early childhood (FEDIC), among others.
  • 4.4K
  • 28 Apr 2022
Topic Review
Maté (Drink)
User:RMCD bot/subject notice Maté or mate (/ˈmæteɪ/), also known as chimarrão or cimarrón, is a traditional South American caffeine-rich infused drink, that was consumed by the Guaraní and Tupí peoples. It is the National Beverage in Argentina, Uruguay and Paraguay. It is also consumed in the Bolivian Chaco, Southern Chile, Southern Brazil, Syria—the largest importer in the world—and Lebanon, where it was brought from Argentina by immigrants. It is prepared by steeping dried leaves of yerba mate (Ilex paraguariensis, known in Portuguese as erva-mate) in hot water and is served with a metal straw from a shared hollow calabash gourd. The straw is called a bombilla in Spanish, a bomba in Portuguese, and a bombija or, more generally, a masassa (straw) in Arabic. The straw is traditionally made of silver. Modern, commercially available straws are typically made of nickel silver (called alpaca), stainless steel, or hollow-stemmed cane. The gourd is known as a mate or a guampa; while in Brazil, it has the specific name of cuia, or also cabaça (the name for Indigenous-influenced calabash gourds in other regions of Brazil, still used for general food and drink in remote regions). Even if the water is supplied from a modern thermos, the infusion is traditionally drunk from mates or cuias. The maté leaves are dried, chopped, and ground into a powdery mixture called yerba, "erva" in Portuguese, which means "herb". The bombilla functions as both a straw and a sieve. The submerged end is flared, with small holes or slots that allow the brewed liquid in, but block the chunky matter that makes up much of the mixture. A modern bombilla design uses a straight tube with holes, or a spring sleeve to act as a sieve. "Tea-bag" type infusions of maté (Spanish: mate cocido, Portuguese: chá mate) have been on the market in many South American countries for many years under such trade names as "Taragüi" in Argentina, "Pajarito" and "Kurupí" in Paraguay, and Matte Leão and "Mate Real" in Brazil.
  • 4.4K
  • 03 Nov 2022
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