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Topic Review
Dental Poly(methyl methacrylate)-Based Resin
Poly(methyl methacrylate) (PMMA)-based resins have been conventionally used in dental prostheses owing to their good biocompatibility. However, PMMA-based resins have relatively poor mechanical properties. The filler was incorporated in the photocurable PMMA-based resin to improve the mechanical and physicochemical properties. The filler-loaded PMMA-based resin has the potential for use in dental restorative materials.
  • 5.0K
  • 25 Mar 2022
Topic Review
The Reverend
The Reverend is an honorific style most often placed before the names of Christian clergy and ministers. There are sometimes differences in the way the style is used in different countries and church traditions. The Reverend is correctly called a style but is often and in some dictionaries called a title, form of address or title of respect. The style is also sometimes used by leaders in non-Christian religions such as Judaism and Buddhism. The term is an anglicisation of the Latin reverendus, the style originally used in Latin documents in medieval Europe. It is the gerundive or future passive participle of the verb revereri ("to respect; to revere"), meaning "[one who is] to be revered/must be respected". The Reverend is therefore equivalent to The Honourable or The Venerable. It is paired with a modifier or noun for some offices in some religious traditions: Anglican archbishops and most Roman Catholic bishops are usually styled The Most Reverend (reverendissimus); other Anglican bishops and some Roman Catholic bishops are styled The Right Reverend; some Reformed churches have used The Reverend Mister as a style for their clergy. With Christian clergy, the forms His Reverence and Her Reverence is also sometimes used, along with its parallel in direct address, Your Reverence. The abbreviation HR is sometimes used.
  • 5.0K
  • 02 Oct 2022
Topic Review
Monkeypox Virus
Monkeypox virus (MPXV) is a double-stranded DNA virus belonging to the Orthopox genus in the family Poxviridae. It has a zoonotic origin and MPXV infected wild rodents and primates have been found in central Africa. In humans, symptoms of MPXV infection include fever, head and muscle ache, lymphadenopathy and a characteristic rash that develops into papules, vesicles and pustules which eventually scab over and heal. Monkeypox is less often fatal (case fatality rates range from less than 1% to 3.6% depending on geographic localisation, viral clade and age group) than smallpox (up to 30%) caused by a related Variola virus. MPXV used to be endemic in sub-Saharan Africa, infecting wild animals and occasionally causing zoonotic outbreaks. Exotic animal trade and international travel combined with the increasing susceptibility of the human population due to lack of vaccination facilitated the spread of MPXV to new areas. Since April 2022, over 15.000 of MPX cases have been detected in >60 non-endemic countries around the world, predominantly among men who have sex with men, making it the largest described MPXV outbreak known to date.
  • 5.0K
  • 21 Jul 2022
Topic Review
Scientific Tourism
Scientific tourism (ST) is a transversal approach to tourism development and management that can be applied in the evolution of many segments, from rural, to ecotourism or mass tourism.  ST focuses on contributing to the resilience of communities and territories by building shared knowledge and understanding of essential socio-ecological characteristics and dynamics.  The website of the ST network (scientific-tourism.org), defines ST as an activity where visitors participate in the generation and dissemination of scientific knowledge being developed by research and development centers. Mao and Bourlon described ST using a spectrum of levels and thematic approaches, organized around the four overarching categories: (1) adventure tourism with a scientific dimension, (2) cultural tourism with a scientific dimension, (3) scientific eco-volunteering, and (4) scientific research-based tourism. The authors suggested that, in many cases, the four forms of ST were complementary, and could simultaneously occur or merge within the scope of a destination or project. While this approach to ST incorporates many of the concepts of learning tourism, it differs in that it is grounded in the perspective of scientific knowledge generation and dissemination. Scientific tourism (ST) development builds on the scientific heritage of a geography, by matching researchers with local actors in an ongoing process that leads to shared understanding and the creation of new knowledge that can support the conservation and resilience of communities and their natural and socio-cultural settings. Through purposeful grounding of tourism in science, local communities can become more engaged with the socio-ecological systems in which they live and become empowered to innovate the ways in which tourism evolves.
  • 5.0K
  • 23 Sep 2021
Topic Review
Pliny the Younger on Christians
Pliny the Younger, the Roman governor of Bithynia et Pontus (now in modern Turkey) wrote a letter to Emperor Trajan around 112 AD and asked for counsel on dealing with Christians. The letter (Epistulae X.96) details an account of how Pliny conducted trials of suspected Christians who appeared before him as a result of anonymous accusations and asks for the Emperor's guidance on how they should be treated. Neither Pliny nor Trajan mentions the crime that Christians had committed, except for being a Christian; and other historical sources do not provide a simple answer to what that crime could be, but a likely element may be the stubborn refusal of Christians to worship Roman gods; making them appear as objecting to Roman rule. Pliny states that he gives Christians multiple chances to affirm they are innocent and if they refuse three times, they are executed. Pliny states that his investigations have revealed nothing on the Christians' part but harmless practices and "depraved, excessive superstition." However, Pliny seems concerned about the rapid spread of this "superstition"; and views Christian gatherings as a potential starting point for sedition. The letter is the first pagan account to refer to Christianity, providing key information on early Christian beliefs and practices and how these were viewed and dealt with by the Romans. The letter and Trajan's reply indicate that at the time of its writing there was no systematic and official Empire-wide persecution of Christians. Trajan's reply also offers valuable insight into the relationship between Roman provincial governors and Emperors and indicates that at the time Christians were not sought out or tracked down by imperial orders, and that persecutions could be local and sporadic.
  • 5.0K
  • 14 Nov 2022
Topic Review
Citrus Waste
The scientific name of citrus is Citrus L. and it belongs to the Rutaceae family. It is one of the most important fruit crops that is grown throughout the world. During processing, a large amount of waste is produced from citrus fruits in the form of peel, seeds, and pomace. Every year, the citrus processing industry creates a large amount of waste. The citrus waste is composed of highly bioactive substances and phytochemicals, including essential oils (EOs), ascorbic acid, sugars, carotenoids, flavonoids, dietary fiber, polyphenols, and a range of trace elements.
  • 5.0K
  • 22 Feb 2023
Topic Review
Laser Powder Bed Fusion
Laser powder bed fusion (LPBF) is the most used metal additive manufacturing technique, and it is based on the efficient interaction between a high-energy laser and a metal powder feedstock. The reuse of the powder feedstock is crucial to make the process cost-efficient and environmentally friendly. However, since studies of the mechanical and microstructural properties of parts produced with reused powders show scattered results, a closer look to the powder, heat source and shielding gas properties and to how they interact during the LPBF process is presented.  
  • 5.0K
  • 29 Oct 2020
Topic Review
Out-of-Autoclave Process for Composite Manufacturing
Composite materials have gained increased usage due to their unique characteristic of a high-stiffness-to-weight ratio. High-performing composite materials are produced in the autoclave by applying elevated pressure and temperature. The process is characterized by numerous disadvantages, such as long cycle time, massive investment, costly tooling, and excessive energy consumption. As a result, composite manufacturers seek a cheap alternative to reduce cost and increase productivity. The out-of-autoclave (OoA) process manufactures composites by applying vacuum, pressure, and heat outside of the autoclave.
  • 5.0K
  • 20 Jul 2022
Topic Review
Windows 10 Version History (Version 1903)
The Windows 10 May 2019 Update (also known as version 1903 and codenamed "19H1") is the seventh major update to Windows 10 and the first to use a more descriptive codename (including the year and the order released) instead of the "Redstone" or "Threshold" codename. It carries the build number 10.0.18362.
  • 5.0K
  • 16 Nov 2022
Biography
Taftazani
Sa'ad al-Din Masud ibn Umar ibn Abd Allah al-Taftazani (Persian: سعدالدین مسعودبن عمربن عبداللّه هروی خراسانی تفتازانی‎) also known as Al-Taftazani and Taftazani (1322[1]–1390[2]) was a Muslim Persian[3][4][5] polymath.[6] He also wrote a commentary on the Qur'an in Persian called "Kashf-al-Asrar".[2][7] Al-Taftazani was born in 1322 in Tafta
  • 5.0K
  • 29 Dec 2022
Topic Review
Effects of Pornography on Relationships
Many individuals perceive pornography to have a negative effect on interpersonal relationships, satisfaction, and sexual functioning; however, findings on the topic are mixed. Pornography has never been so widely and universally accessible as it is today. As such, the consumption of pornography is on the rise, for both men and women. This unlimited access changes not only how individuals consume pornography, but how pornography can affect individuals and relationships. Pornography can impact many aspects of an individual’s life, and it is important to understand just what these effects are, as well as the extent to which these effects can reach.
  • 4.9K
  • 22 Nov 2022
Topic Review
Rhizosphere
The rhizosphere serves as a hotspot for diverse microbial activity. It is an intricate ecosystem comprising nutrient-rich soil that surrounds the plant roots, which provides a pool for plant–microbe communication. The term “Rhizomicrobiome” is defined as a microbial community that is present in the rhizosphere. A variety of microorganisms reside within the rhizosphere, including bacteria, fungi, nematodes, protists, and invertebrates. Most of the microbiome studies within the context of rhizosphere signaling have been focused on the bacteria and fungi that make up the major portion of the rhizosphere microbiome.
  • 4.9K
  • 17 May 2022
Topic Review Peer Reviewed
Behaviorally Stretched Microeconomics
A common misconception is that behavioral economics rejects microeconomics. This entry explains how behavioral economics, despite challenging core assumptions of rationality, remains fundamentally aligned with the structure of microeconomics. Anchored in the insight that rational market outcomes can emerge even when individual behavior is non-rational, it revisits the explanatory role of constraints in economic theory. Rather than displacing microeconomics, behavioral economics extends it by incorporating bounded rationality while preserving key structural principles. Central to this integration is Say’s law, the macro-level notion that production generates income and thus the capacity for demand. This connection makes microeconomic constraints reflect deeper macroeconomic principles. Even when market behavior is distorted by correlated cognitive biases and their associated positive feedback dynamics—such as herding or bubbles—the fundamental identity that supply generates the income necessary for demand remains intact, provided that adjustments occur over the long run. The analysis also considers how behavioral deviations affect aggregate outcomes. Ultimately, this entry shows that behavioral economics is not a departure from microeconomics but its natural extension: by embedding bounded rationality within the framework of economic constraints, it preserves the structural coherence of microeconomics while adding psychological depth.
  • 4.9K
  • 17 Sep 2025
Topic Review
Groundwater Withdrawal-Induced Land Subsidence
Land subsidence is probably one of the most evident environmental effects of groundwater pumping. Globally, freshwater demand is the leading cause of this phenomenon. Land subsidence induced by aquifer system drainage can reach total values of up to 14.5 m. The spatial extension of this phenomenon is usually extensive and is often difficult to define clearly. Aquifer compaction contributes to many socio-economic effects and high infrastructure-related damage costs. Currently, many methods are used to analyze aquifer compaction. These include the fundamental relationship between groundwater head and groundwater flow direction, water pressure and aquifer matrix compressibility. Such solutions enable satisfactory modelling results. However, further research is needed to allow more efficient modelling of aquifer compaction. Recently, satellite radar interferometry (InSAR) has contributed to significant progress in monitoring and determining the spatio-temporal land subsidence distributions worldwide. Therefore, implementation of this approach can pave the way to the development of more efficient aquifer compaction models. This entry presents a comprehensive review of models used to predict land surface displacements caused by rock mass drainage, as well as (2) recent advances and (3) a summary of InSAR implementation over recent years to support the aquifer compaction modelling process. Therefore, the study presented would be of benefit to readers who are interested in the topic of interaction between the human population and the hydrogeological system in different regions. The research presented allows readers to better understand the factors, developments and effects of groundwater drainage and thus facilitate large - scale risk assessment and preventive planning.
  • 4.9K
  • 27 Oct 2020
Topic Review
Bibliography of Encyclopedias
This is intended to be as comprehensive as possible list of encyclopedias and encyclopedic/biographical dictionaries ever published in any language. The list will not include reprinted editions but it is intended to list an alphabetical bibliography by theme and language to anything which resembles an A-Z encyclopedia or encyclopedic dictionary, both print and online. Entries are in the English language unless specifically stated as otherwise. Several entries may overlap and be listed under several different topics. For a simple list without bibliographic information see Lists of encyclopedias.
  • 4.9K
  • 14 Oct 2022
Topic Review
The Spemann Organizer
In 1924, to understand the processes involved in developmental biology, Spemann and Mangold transplanted a blastopore lip between different ectodermal regions of amphibian embryos. The transplanted dorsal tissue differentiated mostly into a notochord, while the ectoderm of the host dorsal tissue that was sitting above the transplanted region (blastopore lip) was induced and differentiated to form a Siamese twin containing dorsal tissues such as somites and a neural plate, which would form the central nervous system, forming the bulk of a second axis. The major findings were that the transplant had altered the fate of the overlying cells and that the neural folds were built from recipient cells and not donor cells. Spemann and Mangold discovered the organizing center in the dorsal blastopore lip of amphibians. This center consists of a cluster of cells in the developing embryo that have the ability to interact and instruct morphogenesis in the surrounding cells during gastrulation. When transplanted to the ventral side of the embryo, the center will induce the formation of a secondary axis, promoting the development of the central nervous system, organs, and tissues, as well as the formation of the main body axis. Spemann and Mangold found the first evidence of the organizing center, thereafter called the “Spemann organizer”, and its major role in the development of vertebrates. This discovery also introduced the concept of induction in embryonic development, which refers to the method used by specific cells to affect the fate of other embryonic cells. A major milestone had been achieved for developmental biology.
  • 4.9K
  • 11 Nov 2021
Topic Review
Satellite Sandwich Structures
Sandwich panels are widely used in the design of unmanned satellites and, in addition to having a structural function, can often serve as shielding, protecting the satellites’ equipment from hypervelocity impacts (HVI) of orbital debris and micrometeoroids.
  • 4.9K
  • 12 May 2021
Topic Review
Development Progress of TOPCon Solar Cells
In addition to the different technologies of silicon solar cells in crystalline form, TOPCon solar cells have an exceptionally great efficiency of 26%, accomplished by the manufacturing scale technique for industrialization, and have inordinate cell values of 732.3 mV open-circuit voltage (Voc) and a fill factor (FF) of 84.3%. A silicon layer doped with phosphorus and a very thin tunnel oxide form TOPCon. The thickness of tunnel oxide, which is less than 2 nm in the TOPCon cell, primarily affects the electrical properties and efficiency of the cell. 
  • 4.9K
  • 21 Sep 2022
Topic Review
Intercultural Competence
Intercultural competence is a range of cognitive, affective, and behavioural skills that lead to effective and appropriate communication with people of other cultures. Effective intercultural communication relates to behaviors that culminate with the accomplishment of the desired goals of the interaction and all parties involved in the situation. Appropriate intercultural communication includes behaviors that suit the expectations of a specific culture, the characteristics of the situation, and the level of the relationship between the parties involved in the situation. It also takes into consideration one's own cultural norms and the best appropriate, comfortable compromise between the different cultural norms. It's very important for someone to be culturally competent at work and at school. Individuals that are effective and appropriate in intercultural situations display high levels of cultural self-awareness and understand the influence of culture on behavior, values, and beliefs. Intercultural competence is achieved through a set of skills that includes cognitive, affective, and behavioral processes. Cognitive processes imply the understanding of situational and environmental aspects of intercultural interactions and the application of intercultural awareness, which is affected by the understanding of the self and own culture. Self-awareness in intercultural situations refers to the ability of self-monitoring in such interactions to censor anything not acceptable to another culture. On the other hand, cultural awareness leads the individual to an understanding of how his/her own culture determines feelings, thoughts, and personality. Affective processes define the emotions that span during intercultural interactions. These emotions are strongly related to self-concept, open-mindedness, non-judgementalism, and social relaxation. In general, positive emotions generate respect for other cultures and their differences. Behavioral processes refer to how effectively and appropriately the individual directs actions to achieve goals. Actions during intercultural interactions are influenced by the ability to clearly convey a message, proficiency with the foreign language, flexibility and management of behavior, and social skills.
  • 4.9K
  • 26 Oct 2022
Topic Review
Mechanism of seed anaerobic germination
As sessile organisms, flooding/submergence is one of the major abiotic stresses for higher plants, with deleterious effects on their growth and survival. Therefore, flooding/submergence is a large challenge for agriculture in lowland areas worldwide. Long-term flooding/submergence can cause severe hypoxia stress to crop plants and can result in substantial yield loss. Rice has evolved distinct adaptive strategies in response to low oxygen (O2) stress caused by flooding/submergence circumstances. Recently, direct seeding practice has been increasing in popularity due to its advantages of reducing cultivation cost and labor. However, establishment and growth of the seedlings from seed germination under the submergence condition are large obstacles for rice in direct seeding practice. The physiological and molecular regulatory mechanisms underlying tolerant and sensitive phenotypes in rice have been extensively investigated. Here, this review focuses on the progress of recent advances in the studies of the molecular mechanisms and metabolic adaptions underlying anaerobic germination (AG) and coleoptile elongation. Further, we highlight the prospect of introducing quantitative trait loci (QTL) for AG into rice mega varieties to ensure the compatibility of flooding/submergence tolerance traits and yield stability, thereby advancing the direct seeding practice and facilitating future breeding improvement.
  • 4.9K
  • 19 Oct 2020
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