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Topic Review
Solvent-Free Synthesis of Zeolites
The traditional hydrothermal method to prepare zeolite will inevitably use a large amount of water as a solvent, which will lead to higher autogenous pressure, low efficiency, and wastewater pollution. The solvent-free method can be used to synthesize various types of zeolites by mechanical mixing, grinding, and heating of solid raw materials, which exhibits the apparent advantages of high yield, low pollution, and high efficiency. This review mainly introduces the development process of solvent-free synthesis, preparation of hierarchical zeolite, morphology control, synthesis mechanism and applications of solvent-free methods. It can be believed that solvent-free methods will become a research focus and have enormous industrial application potential.
  • 3.5K
  • 25 Mar 2021
Topic Review
List of Minerals H (Complete)
This list includes those recognised minerals beginning with the letter H. The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date. This list contains a mixture of mineral names that have been approved since 1959 and those mineral names believed to still refer to valid mineral species (these are called "grandfathered" species). The data was exported from mindat.org on 29 April 2005; updated up to 'IMA2018'. The minerals are sorted by name, followed by the structural group (rruff.info/ima and ima-cnmnc by mineralienatlas.de, mainly) or chemical class (mindat.org and basics), the year of publication (if it's before of an IMA approval procedure), the IMA approval and the Nickel–Strunz code. The first link is to mindat.org, the second link is to webmineral.com, and the third is to the Handbook of Mineralogy (Mineralogical Society of America).
  • 3.5K
  • 27 Nov 2022
Topic Review
Sustainable Water Resources Management in Saudi Arabia
Saudi Arabia is one of the most water-scarce nations in the world, with a huge demand-supply gap, and the situation is expected to worsen due to climate change. Conventional surface water resources are limited, while nonrenewable groundwater sources are depleted. To build a more resilient and sustainable water sector, the production of non-conventional water resources, specifically desalinated seawater and treated domestic wastewater, has steadily increased in recent years. As the country lacks perennial water resources, such as rivers or water bodies, it relies mainly on nonrenewable groundwater and desalinated water to meet its daily requirements. Although the government is attempting to regulate the agricultural sector, water consumption in agriculture remains relatively high. It presents an environmental challenge due to its heavy reliance on non-renewable groundwater resources. The anticipated increase in temperature and highly uncertain changes in the rainfall patterns in Saudi Arabia could lead to greater uncertainty when attempting to develop effective water resource management plans.
  • 3.5K
  • 22 Dec 2023
Topic Review
Jewish Atheism
Jewish atheism refers to the atheism of people who are ethnically and (at least to some extent) culturally Jewish. Because Jewish identity is ethnoreligious (i.e., it encompasses ethnic as well as religious components), the term "Jewish atheism" does not inherently entail a contradiction. Based on Jewish law's emphasis on matrilineal descent, even religiously conservative Orthodox Jewish authorities would accept an atheist born to a Jewish mother as fully Jewish.
  • 3.5K
  • 11 Nov 2022
Topic Review Peer Reviewed
Society, Work and Precarity
One of sociology’s core tasks is to explain how societies work and change. Work plays a crucial and fundamental role in the formation of societies and is also a major driver of social change. It is therefore of key sociological interest to understand how work creates and changes the social conditions we call societies. However, work also creates different levels of freedom and equality; which manifest as different types and degrees of precarity in what I call ‘work societies'.
  • 3.5K
  • 25 Jul 2022
Topic Review
Energy-Efficiency Passive Strategies for Mediterranean Climate
The main objective and function of passive solutions are to contribute to the natural cooling or heating of the building. They are constructive technologies integrated within buildings. The exchange of thermal energy takes place by natural means that, when dimensioned correctly, can significantly reduce a household’s energy bills. Several passive strategies, namely natural ventilation, shading devices, overhangs, and daylighting, associated with the building envelope’s characteristics are important passive design parameters that should be given particular attention to highlighting the potential of buildings for energy efficiency.
  • 3.5K
  • 13 May 2022
Biography
Hermann Oberth
Hermann Julius Oberth (German: [ˈhɛrman ˈjuːli̯ʊs ˈoːbɛrt]; 25 June 1894 – 28 December 1989) was an Austro-Hungarian-born German physicist and engineer. He is considered one of the founding fathers of rocketry and astronautics, along with the French Robert Esnault-Pelterie, the Russian Konstantin Tsiolkovsky, and the American Robert Goddard.[1][2] Hermann Oberth as a young boy,
  • 3.5K
  • 05 Dec 2022
Topic Review
Currently Available Treatments for Periodontal Disease
Periodontitis is an inflammatory infection caused by bacterial plaque accumulation that affects the periodontal tissues. This entry provides a summary of the main features of the periodontium and describes the currently available treatments for periodontal disease.
  • 3.5K
  • 13 Apr 2023
Topic Review
Natural compounds for wood protection
Natural compounds for wood protection against fungi - all natural substances (or their mixtures) of plant or animal origin with proven antifungal activity and possibility to be applied into wood structure or on its surface to protect wood against wood decaying fungi, blue stain and mold, e.g. essential oils, tannins, wood extractives, alkaloids, propolis or chitosan.
  • 3.5K
  • 02 May 2021
Topic Review
Cinnamon (Desktop Environment)
Cinnamon is a free and open-source desktop environment for the X Window System that derives from GNOME 3 but follows traditional desktop metaphor conventions. Cinnamon is the principal desktop environment of the Linux Mint distribution and is available as an optional desktop for other Linux distributions and other Unix-like operating systems as well. The development of Cinnamon began as a reaction to the April 2011 release of GNOME 3 in which the conventional desktop metaphor of GNOME 2 was abandoned in favor of GNOME Shell. Following several attempts to extend GNOME 3 such that it would suit the Linux Mint design goals, the Mint developers forked several GNOME 3 components to build an independent desktop environment. Separation from GNOME was completed in Cinnamon 2.0, which was released in October 2013. Applets and desklets are no longer compatible with GNOME 3. As the distinguishing factor of Linux Mint, Cinnamon has generally received favorable coverage by the press, in particular for its ease-of-use and gentle learning curve. With respect to its conservative design model, Cinnamon is similar to the Xfce and GNOME 2 (MATE and GNOME Flashback/Classic) desktop environments.
  • 3.5K
  • 07 Nov 2022
Topic Review
Freight Bicycle
Freight bicycles, carrier cycles, freight tricycles, cargo bikes, box bikes, or cycletrucks are human powered vehicles designed and constructed specifically for transporting loads. Vehicle designs include a cargo area consisting of an open or enclosed box, a flat platform, or a wire basket, usually mounted over one or both wheels, low behind the front wheel, or between parallel wheels at either the front or rear of the vehicle. The frame and drivetrain must be constructed to handle loads larger than those on an ordinary bicycle.
  • 3.5K
  • 03 Jan 2023
Topic Review
Sound Card
A sound card (also known as an audio card) is an internal expansion card that provides input and output of audio signals to and from a computer under the control of computer programs. The term sound card is also applied to external audio interfaces used for professional audio applications. Sound functionality can also be integrated onto the motherboard, using components similar to those found on plug-in cards. The integrated sound system is often still referred to as a sound card. Sound processing hardware is also present on modern video cards with HDMI to output sound along with the video using that connector; previously they used a S/PDIF connection to the motherboard or sound card. Typical uses of sound cards or sound card functionality include providing the audio component for multimedia applications such as music composition, editing video or audio, presentation, education and entertainment (games) and video projection. Sound cards are also used for computer-based communication such as voice over IP and teleconferencing.
  • 3.5K
  • 04 Nov 2022
Topic Review
Biofuel production from different sources
Due to the depletion of fossil fuels, biofuel production from renewable sources has gainedinterest. Malaysia, as a tropical country with huge resources, has a high potential to produce differenttypes of biofuels from renewable sources. In Malaysia, biofuels can be produced from various sources,such as lignocellulosic biomass, palm oil residues, and municipal wastes. Besides, biofuels are dividedinto two main categories, called liquid (bioethanol and biodiesel) and gaseous (biohydrogen andbiogas). Malaysia agreed to reduce its greenhouse gas (GHG) emissions by 45% by 2030 as theysigned the Paris agreement in 2016. Therefore, we reviewed the status and potential of Malaysia asone of the main biofuel producers in the world in recent years. The role of government and existingpolicies have been discussed to analyze the outlook of the biofuel industries in Malaysia.
  • 3.5K
  • 27 Oct 2020
Topic Review
Machine Learning for Plant Breeding/Biotechnology
Classical univariate and multivariate statistics are the most common methods used for data analysis in plant breeding and biotechnology studies. Evaluation of genetic diversity, classification of plant genotypes, analysis of yield components, yield stability analysis, assessment of biotic and abiotic stresses, prediction of parental combinations in hybrid breeding programs, and analysis of in vitro-based biotechnological experiments are mainly performed by classical statistical methods. Despite successful applications, these classical statistical methods have low efficiency in analyzing data obtained from plant studies, as the genotype, environment, and their interaction (G × E) result in nondeterministic and nonlinear nature of plant characteristics. Large-scale data flow, including phenomics, metabolomics, genomics, and big data, must be analyzed for efficient interpretation of results affected by G × E. Nonlinear nonparametric machine learning techniques are more efficient than classical statistical models in handling large amounts of complex and nondeterministic information with "multiple-independent variables versus multiple-dependent variables" nature. Neural networks, partial least square regression, random forest, and support vector machines are some of the most fascinating machine learning models that have been widely applied to analyze nonlinear and complex data in both classical plant breeding and in vitro-based biotechnological studies. High interpretive power of machine learning algorithms has made them popular in the analysis of plant complex multifactorial characteristics. The classification of different plant genotypes with morphological and molecular markers, modeling and predicting important quantitative characteristics of plants, the interpretation of complex and nonlinear relationships of plant characteristics, and predicting and optimizing of in vitro breeding methods are the examples of applications of machine learning in conventional plant breeding and in vitro-based biotechnological studies. Precision agriculture is possible through accurate measurement of plant characteristics using imaging techniques and then efficient analysis of reliable extracted data using machine learning algorithms. Perfect interpretation of high-throughput phenotyping data is applicable through coupled machine learning-image processing. This entry shows how nonlinear machine learning algorithms can be used in different branches of classical plant breeding and in vitro-based methods. An idea is provided at the end of the entry that shows how coupled image processing-machine learning (especially deep CNN) could be used to identify the ploidy level of plants. It could be used in laboratories without flowcytometry equipment and/or in plant species without an established chromosome counting protocol.
  • 3.5K
  • 17 Feb 2021
Topic Review
Family
A "family" is a social unit consisting of individuals related by blood, marriage, or adoption. It is a fundamental institution in society, providing emotional support, companionship, and a sense of belonging. Families typically share common living arrangements and work together to meet the physical, emotional, and financial needs of their members. The structure and dynamics of families can vary widely across cultures and societies.
  • 3.5K
  • 25 Jan 2024
Topic Review
The World Health Organization (WHO): An In-Depth Overview
The World Health Organization (WHO), established in 1948, is a specialized agency of the United Nations focused on international public health. Headquartered in Geneva, Switzerland, WHO plays a pivotal role in global health governance by providing leadership on health matters, setting norms and standards, and offering technical support to countries. The organization is structured into six regional offices and is governed by the World Health Assembly and the Executive Board. WHO’s core areas of focus include combating infectious diseases, addressing non-communicable diseases, strengthening health systems, and responding to health emergencies. Notably, WHO led the global eradication of smallpox and has been instrumental in initiatives against polio, HIV/AIDS, and most recently, COVID-19. Despite its successes, WHO faces challenges such as funding constraints, bureaucratic inefficiencies, and political pressures. As it looks to the future, WHO’s work will continue to be guided by its commitment to promoting health, achieving universal health coverage, and addressing emerging health threats, ensuring its ongoing relevance and impact in global health.
  • 3.5K
  • 04 Sep 2024
Topic Review
Titanium Dioxide for Water Purification
Titanium dioxide (TiO2), one of the most frequently used materials in general, has emerged as an excellent photocatalytic material for environmental applications. Here, principles and mechanisms of the photocatalytic activity of TiO2 have been analyzed. Structural and physical specificities of TiO2 nanoparticles, such as morphology, crystal structure, and electronic and optical properties, have been considered in the context of photocatalytic applications.
  • 3.5K
  • 16 Jan 2023
Topic Review
Maladjustment
Maladjustment is a term used in psychology to refer the "inability to react successfully and satisfactory to the demand of one's environment". The term maladjustment can be refer to a wide range of social, biological and psychological conditions. Maladjustment can be both intrinsic or extrinsic. Intrinsic maladjustment is the disparities between the needs, motivations and evaluations of an individual, with the actual reward gain through experiences. Extrinsic maladjustment on the other hand, is refer to when an individual's behavior is does not meet the cultural or social expectation of society. The causes of maladjustment can be attributed to a wide variety of factors, including: family environment, personal factors, and school-related factors. Maladjustment affects an individual's development and the ability to maintain a positive interpersonal relationship with others. Often maladjustment emerges during early stages of childhood, when a child is in the process of learning methods to solve problem that occurs in interpersonal relationship in their social network. A lack of intervention for individuals who are maladjusted can cause negative effects later on in life.
  • 3.5K
  • 30 Nov 2022
Topic Review
The Biomechanics of Cartilage
Articular cartilage (AC) sheathes joint surfaces and minimizes friction in diarthrosis. The resident cell population, chondrocytes, are surrounded by an extracellular matrix and a multitude of proteins, which bestow their unique characteristics. AC is characterized by a zonal composition (superficial (tangential) zone, middle (transitional) zone, deep zone, calcified zone) with different mechanical properties. An overview is given about different testing (load tests) methods as well as different modeling approaches.
  • 3.5K
  • 14 Apr 2021
Topic Review
Herbal Medicine
Herbal medicine (also herbalism) is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. There is limited scientific evidence for the safety and efficacy of plants used in 21st century herbalism, which generally does not provide standards for purity or dosage. The scope of herbal medicine commonly includes fungal and bee products, as well as minerals, shells and certain animal parts. Herbal medicine is also called phytomedicine or phytotherapy. Paraherbalism describes alternative and pseudoscientific practices of using unrefined plant or animal extracts as unproven medicines or health-promoting agents. Paraherbalism relies on the belief that preserving various substances from a given source with less processing is safer or more effective than manufactured products, a concept for which there is no evidence.
  • 3.5K
  • 25 Nov 2022
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