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Topic Review
Green Seaweeds and Ulvan
This entry analyzed the recent trend towards, progresses towards the preparation of chemicals of, and value-added biomaterials from marine macroalgae resources, especially green seaweeds and their derived ulvan polysaccharides for various applications. In recent years, ulvan both in pristine and modified forms has gained a large amount of attention for its effective utilization in various areas due to its unique physiochemical properties, lack of exploration, and higher green seaweed production. The pristine form of ulvan (sulfated polysaccharides) is used as a bio-component; food ingredient; or a raw material for the production of numerous chemicals such as fuels, cosmetics, and pharmaceuticals, whereas its modified form is used in the sector of composites, membranes, and scaffolds, among others, because of its physicochemical properties.
  • 2.6K
  • 15 Jun 2021
Topic Review
Popular Uses and Botanical Description of Kalanchoe
The Crassulaceae J. St.-Hil. family is composed of 36 genera. Species of this family are distributed in Africa and Asia, predominantly in Madagascar and Arabia but are also found in the Americas and in Australia. The genus Kalanchoe Adans (Heterotypic Synonyms: Baumgartenia Tratt., Bryophyllum Salisb., Crassuvia Comm. ex Lam., Geaya Costantin and Poiss., Kitchingia Baker, Meristostylus Klotzsch, Physocalycium Vest, and Vereia Andrews) belongs to the Crassulaceae family and comprises 179 accepted species. 
  • 2.6K
  • 03 Aug 2023
Topic Review
Personal Protective Equipment for Dentists
Severe Acute Respiratory-Syndrome-CoronaVirus-2 ( SARS-CoV-2) and all infectious agents can determine serious risk for systemic diseases. In literature there are some models of safety protocols in dentistry. All the personal protective equipment (PPE) actually on the market and their indications are reported and compared before and after COVID-19 onset, focusing on the correct safety procedures for each dental practice. 
  • 2.6K
  • 06 Nov 2020
Topic Review
The Half-Truth Effect and Its Implications for Sustainability
Half-truth is defined as “a statement that mingles truth and falsehood with deliberate intent to deceive”. 
  • 2.6K
  • 23 Jun 2022
Topic Review
CD47-SIRPα Innate Immune Checkpoint on Neutrophils
Immunotherapy aims to engage various immune cells in the elimination of cancer cells. Neutrophils are the most abundant leukocytes in the circulation and have unique mechanisms by which they can kill cancer cells opsonized by antibodies. However, neutrophil effector functions are limited by the inhibitory receptor SIRPα, when it interacts with CD47. The CD47 protein is expressed on all cells in the body and acts as a ‘don’t eat me’ signal to prevent tissue damage. Cancer cells can express high levels of CD47 to circumvent tumor elimination. Thus, blocking the interaction between CD47 and SIRPα may enhance anti-tumor effects by neutrophils in the presence of tumor-targeting monoclonal antibodies. Blocking the CD47-SIRPα interaction may therefore potentiate neutrophil-mediated antibody-dependent cellular cytotoxicity (ADCC) towards cancer cells, and various inhibitors of the CD47-SIRPα axis are now in clinical studies.
  • 2.6K
  • 27 Jul 2022
Topic Review
Brodie's Law (Act)
Brodie's Law is an amendment to the Victorian Crimes Act 1958 which makes serious bullying an offence punishable by a maximum penalty of 10 years' imprisonment. The law is named after Brodie Panlock, a 19-year-old who committed suicide after being bullied at work. Brodie's parents, Damien and Rae Panlock, successfully lobbied the Victorian Government to make the amendment.
  • 2.6K
  • 28 Sep 2022
Topic Review
Types of Antennas for Biomedical Applications
Planar antennas have become an integral component in modern biomedical instruments owing to their compact structure, cost effectiveness, and light weight. These antennas are crucial in realizing medical systems such as body area networks, remote health monitoring, and microwave imaging systems. Antennas intended for the above applications should be conformal and fabricated using lightweight materials that are suitable for wear on the human body. Wearable antennas are intended to be placed on the human body to examine its health conditions.
  • 2.6K
  • 12 Oct 2023
Topic Review
Imaging Techniques in Adult Acquired Flatfoot Deformity
Adult acquired flatfoot deformity (AAFD) is a disorder caused by repetitive overloading, which leads to progressive posterior tibialis tendon (PTT) insufficiency. It mainly affects middle-aged women and occurs with foot pain, malalignment, and loss of function. After clinical examination, imaging plays a key role in the diagnosis and management of this pathology. Imaging allows confirmation of the diagnosis, monitoring of the disorder, outcome assessment and complication identification. 
  • 2.6K
  • 28 Jan 2023
Topic Review
Voisin Rational Grazing and Its Four Principles
This entry briefly describes the need to promote sustainable agriculture, proposing Voisin Rational Grazing (VRG) as an alternative livestock production system as a way to address sustainability in all its dimensions. It describes the four VRG principles that allows this livestock production system to attain high productive standards while boosting social, cultural and environmental characteristics within the pastoral ecosystem.
  • 2.6K
  • 15 Dec 2021
Topic Review
Dependent Personality Disorder
Dependent personality disorder (DPD) is a personality disorder that is characterized by a pervasive psychological dependence on other people. This personality disorder is a long-term condition in which people depend on others to meet their emotional and physical needs, with only a minority achieving normal levels of independence. Dependent personality disorder is a cluster C personality disorder, which is characterized by excessive fear and anxiety. It begins by early adulthood, and it is present in a variety of contexts and is associated with inadequate functioning. Symptoms can include anything from extreme passivity, devastation or helplessness when relationships end, avoidance of responsibilities and severe submission.
  • 2.6K
  • 14 Nov 2022
Topic Review
Digital Preservation for UNESCO Architectural Heritage
Architectural heritage includes built structures that are of outstanding value of natural and cultural identity and require conservation, preservation, presentation and transmission to the future generations. In this regard, UNESCO has enlisted six World Heritage Sites in Pakistan that need to be preserved. Moreover, the heritage sites are undergoing theft, vandalism, natural decay and other socio-cultural harms. One of the state-of-the-art methodologies is the digital preservation of the historic sites. Amongst the various available computer technologies, photogrammetry is the quickest and most cost-effective method that can be used for digital preservation. The research will focus on the digital preservation of UNESCO World Heritage Sites, which is an emerging trend in an architectural context. Developing countries have limited funds and resources and most historic sites are being neglected by the lack of financial resources. This research suggests digital preservation as an emerging solution, identifies its challenges and suggests photogrammetry as a cost-effective solution to six UNESCO enlisted historic sites of Pakistan. It also suggests that once digitally recorded, information of historic sites can also be used in diverse applications to generate further finances. 
  • 2.6K
  • 19 Apr 2022
Topic Review
Organic Waste Gasification by Steam and Carbon Dioxide
The selective studies on environmentally friendly, combustion-free, allothermal, atmospheric-pressure, noncatalytic, direct H2O/CO2 gasification of organic feedstocks like biomass, sewage sludge wastes (SSW) and municipal solid wastes (MSW) are considered to demonstrate the pros and cons of the approaches and provide future perspectives. The environmental friendliness of H2O/CO2 gasification is well known as it is accompanied by considerably less harmful emissions into the environment as compared to O2/air gasification. Comparative analysis of the various gasification technologies includes low-temperature H2O/CO2 gasification at temperatures up to 1000 °C, high-temperature plasma- and solar-assisted H2O/CO2 gasification at temperatures above 1200 °C, and an innovative gasification technology applying ultra-superheated steam (USS) with temperatures above 2000 °C obtained by pulsed or continuous gaseous detonations. Analysis shows that in terms of such characteristics as the carbon conversion efficiency (CCE), tar and char content, and the content of harmful by-products the plasma and detonation USS gasification technologies are most promising. However, as compared with plasma gasification, detonation USS gasification does not need enormous electric power with unnecessary and energy-consuming gas–plasma transition.
  • 2.6K
  • 28 Jan 2022
Topic Review
Regenerative Brake
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, the electric traction motor uses the vehicle's momentum to recover energy that would otherwise be lost to the brake discs as heat. This contrasts with conventional braking systems, where the excess kinetic energy is converted to unwanted and wasted heat due to friction in the brakes, or with rheostatic brakes, where the energy is recovered by using electric motors as generators but is immediately dissipated as heat in resistors. In addition to improving the overall efficiency of the vehicle, regeneration can significantly extend the life of the braking system as the mechanical parts will not wear out very quickly.
  • 2.6K
  • 17 Nov 2022
Topic Review
Intrusion Detection System for SOME/IP-Based In-Vehicle Network
This research describes a hybrid AI and rule-based intrusion detection system for detecting SOME/IP communication threats in new automotive electronic electrical architectures.
  • 2.6K
  • 24 May 2023
Topic Review
Unmanned Aerial Vehicles
Unmanned Aerial Vehicles (UAVs), commonly called “drones”, are a class of aircraft that can fly without the onboard presence of pilots.  They vary in type (e.g. fixed wing vs. multi-rotor) and size (from a few grams to hundreds of kilograms).  These vehicles are intended for a variety of applications, including transport and logistics, monitoring and surveillance, and media and telecommunications.
  • 2.6K
  • 04 Feb 2021
Topic Review
LSPR Gas Sensors
The localized surface plasmon resonance (LSPR) phenomenon is known to be responsible for the unique colour effects observed in the ancient Roman Lycurgus Cup and at the windows of the medieval cathedrals. In both cases, the optical effects result from the interaction of the visible light (scattering and absorption) with the conduction band electrons of noble metal nanoparticles (gold, silver, and gold–silver alloys). These nanoparticles are dispersed in a dielectric matrix with a relatively high refractive index in order to push the resonance to the visible spectral range. At the same time, they have to be located at the surface to make LSPR sensitive to changes in the local dielectric environment, the property that is very attractive for sensing applications.
  • 2.6K
  • 29 Jun 2021
Topic Review
Impact of COVID-19 on Social/Health/Economy
The COVID-19 pandemic is the most large-scale pandemic on earth this century, and the impact in all life sectors is devasting and directly affected human activity in the first wave. The impact on the economy, social care systems, and human relationships is causing an unprecedented global crisis. SARS-CoV-2 has a strong direct acute impact on population health, not only at the physiological level but also at the psychological level for those who suffer it, those close to them, and the general population, who suffer from the social consequences of the pandemic. In this line, the economic recession increased, even more, the social imbalance and inequity, hitting the most vulnerable families, and creating a difficult context for public institutions to address. 
  • 2.6K
  • 15 Jun 2021
Topic Review
Periadenitis Mucosa Necrotica Recurrens
Aphthous stomatitis, or recurrent aphthous stomatitis (RAS), is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals. The informal term canker sore is also used, mainly in North America, although it may also refer to other types of mouth ulcers. The cause is not completely understood but involves a T cell-mediated immune response triggered by a variety of factors which may include nutritional deficiencies, local trauma, stress, hormonal influences, allergies, genetic predisposition, certain foods, dehydration, some food additives, or some hygienic chemical additives like SDS (common in toothpaste). These ulcers occur periodically and heal completely between attacks. In the majority of cases, the individual ulcers last about 7–10 days, and ulceration episodes occur 3–6 times per year. Most appear on the non-keratinizing epithelial surfaces in the mouth – i.e. anywhere except the attached gingiva, the hard palate and the dorsum of the tongue – although the more severe forms, which are less common, may also involve keratinizing epithelial surfaces. Symptoms range from a minor nuisance to interfering with eating and drinking. The severe forms may be debilitating, even causing weight loss due to malnutrition. The condition is very common, affecting about 20% of the general population to some degree. The onset is often during childhood or adolescence, and the condition usually lasts for several years before gradually disappearing. There is no cure, and treatments such as corticosteroids aim to manage pain, reduce healing time and reduce the frequency of episodes of ulceration.
  • 2.6K
  • 01 Dec 2022
Topic Review
Psychomotor Agitation
The Diagnostic and Statistical Manual of Mental Disorders 5 (DSM-5) defines agitation as an excessive motor activity associated with a feeling of inner tension. Motor activity is usually non-productive and repetitious and can include behaviors such as pacing, fidgeting, hand wringing, pulling one’s clothes, and an inability to sit still. Even if aggression and violence are not core agitation features, a progression in agitation severity can lead to aggressive and violent behaviors. At the first International Experts’ Meeting on Agitation, agitation was defined as "a state where patients cannot remain still or calm, characterized by internal features such as hyperresponsiveness, racing thoughts, and emotional tension; and external ones, mainly motor and verbal hyperactivity, and communication impairment".
  • 2.6K
  • 13 May 2021
Topic Review
Applications of Water Mist Systems
Water mist systems have been proven to perform in many applications, such as enclosed compartments; open air; and large, well-ventilated spaces.
  • 2.6K
  • 07 Feb 2023
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