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Topic Review
Polymer-Derived Ceramics
Ceramics derived from organic polymer precursors, which have exceptional mechanical and chemical properties that are stable up to temperatures slightly below 2000 °C, are referred to as polymer-derived ceramics (PDCs).
  • 4.4K
  • 09 Feb 2021
Topic Review
Certis CISCO
Coordinates: 1°19′16.88″N 103°53′30.67″E / 1.3213556°N 103.8918528°E / 1.3213556; 103.8918528 Certis CISCO Security Private Limited, formerly CISCO Security Private Limited, is one of the five commercial Auxiliary Police forces authorized to provide armed security officers to government organizations as well as private companies or individuals in Singapore. It has its roots as a department of the Singapore Police Force (SPF), which branched out as the Commercial and Industrial Security Corporation, a statutory board with a monopoly over most areas of the local private armed security industry. From 1 June 2005, the statutory board was dissolved and Cisco Security Pte Ltd was formed upon its corporatisation as a fully owned subsidiary of Temasek Holdings, and inaugurated on 5 July 2005. The abbreviation of the former statutory board, "CISCO", was retained due to its reputation in the local market. The company was renamed as Certis CISCO Security Pte Ltd on 13 September 2007. Cisco Annual Security Report on 20 January 2016 reveals a decline in defender confidence and the increased impact of industrialized attackers. As the oldest Auxiliary Police Force with a monopoly over most of the private armed security sector in Singapore for 33 years, CISCO maintains a visible presence in many key establishments, including the private residences of VVIPs. They were deployed in major events such as the Singapore 2006 IMF Meetings, the New Year Countdown at Marina Bay in 2007 and 2008, the Chingay Parade and the Thaipusam processions. They also continue to dominate some services such as the transportation of valuables, most visibly in the form of delivering cash to automated teller machines.
  • 4.4K
  • 08 Nov 2022
Topic Review
List of Intel Core I7 Microprocessors
The following is a list of Intel Core i7 brand microprocessors. Introduced in 2008, the Core i7 line of microprocessors are intended to be used by high-end users.
  • 4.4K
  • 24 Nov 2022
Topic Review
Mineral Characterization Using Scanning Electron Microscopy (SEM)
Scanning electron microscopy (SEM) is a powerful tool in the domains of materials science, mining, and geology owing to its enormous potential to provide unique insight into micro and nanoscale worlds. The rapid pace of technological development requires a detailed study of minerals to a further extent to meet the unprecedented material demands of the evolving world. There are more than 5956 species of minerals known today, and the number of new identifications is evolving, with as many as 50 new types identified each year. Quantitative measurements and qualitative analyses of mineral compositions within mining ores and reservoirs have valuable importance with practical applications. Comprehensive and accurate information can be gathered for the identification of rocks and minerals, including structural characteristics and mineral composition, which can provide worthy information about pore structure and reservoir heterogeneity.
  • 4.4K
  • 29 Dec 2023
Topic Review
Plagioclase
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series. This was first shown by the German mineralogist Johann Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where sodium and calcium atoms can substitute for each other in the mineral's crystal lattice structure. Plagioclase in hand samples is often identified by its polysynthetic crystal twinning or 'record-groove' effect. Plagioclase is a major constituent mineral in the Earth's crust, and is consequently an important diagnostic tool in petrology for identifying the composition, origin and evolution of igneous rocks. Plagioclase is also a major constituent of rock in the highlands of the Moon. Analysis of thermal emission spectra from the surface of Mars suggests that plagioclase is the most abundant mineral in the crust of Mars. Its name comes from Ancient Greek plágios (πλάγιος 'oblique') + klásis ((κλάσις 'fracture'), in reference to its two cleavage angles.
  • 4.4K
  • 25 Nov 2022
Topic Review
Calcium in Wound Healing
Calcium is a critical coagulation factor during hemostasis and a key signaling molecule for a variety of signaling pathways that regulate angiogenesis. In addition, the calcium ion has also been shown to act as a fundamental cue, directing the cellular functions of different types of cells during wound healing. Calcium plays a vital role as the extracellular signaling molecule and intracellular second messenger for keratinocytes and fibroblasts.
  • 4.4K
  • 12 Jul 2021
Topic Review
Major Synthetic Fuels
A concise yet comprehensive overview of major synthetic fuels currently in production worldwide. The fuels are virtually categorised in an intelligible manner with detailed descriptions of their chemical equations, feedstocks, production processes, applications, and global market leaders.
  • 4.4K
  • 27 Mar 2023
Topic Review
Sustainable Consumer Behavior
Sustainable Consumer Behavior, namely a new sustainable consumer model, refers to major shifts in buying and consumption habits. Nevertheless, these shifts were lagging as consumers resisted change in the comfort of old habits. This comfort was shaken up by the COVID-19 outbreak that forced us to rethink every aspect of our lives. Therefore, this crisis context seems the perfect opportunity to shift towards the sustainable consumer model.
  • 4.4K
  • 09 Jun 2021
Topic Review Peer Reviewed
Wooden Additional Floor in Finland
One of the most effective ways to cover real estate development and renovation processes by improving functionality and energy efficiency is wooden additional floor construction. The scattered information is mapped out, organized, and collated on the current state of the art and the benefits of this practice including its different stages, focusing on the case of Finland. The topic is presented in an accessible and understandable discourse for non-technical readers. By highlighting the benefits and opportunities of this sustainable application, it will contribute to increasing the awareness of wooden additional floor construction, which has many advantages, and therefore to gain more widespread use in Finland and other countries.
  • 4.4K
  • 14 Apr 2022
Topic Review
Dry Permanent Magnetic Separator
Dry magnetic separation is a technology that sorts magnetic minerals from gangue using air as the medium instead of water. When raw ore is fed to the magnetic separator, the magnetic particles are subjected to magnetic force due to the nonuniform magnetic field. When the magnetic force exceeds the competitive force (i.e., gravity and fluid drag force), the particles are captured on or attracted towards the surface of the drum and consequently enter the magnetic product. Meanwhile, the gangue or poor intergrowth particles are not subjected to magnetic force and are separated into the non-magnetic product under the action of competitive force. In other words, magnetic minerals and gangue have different trajectories in a magnetic separator, thereby achieving the purpose of separation. Dry magnetic separation has been recently adopted by plants to cope with cost and environmental pressures.
  • 4.4K
  • 24 Oct 2022
Topic Review
Hyperfiltration
Hyperfiltration is an important underlying cause of glomerular dysfunction associated with several systemic and intrinsic glomerular conditions leading to chronic kidney disease (CKD). These include obesity, diabetes, hypertension, focal segmental glomerulosclerosis (FSGS), congenital abnormalities and reduced renal mass (low nephron number). Hyperfiltration-associated biomechanical forces directly impact the cell membrane, generating tensile and fluid flow shear stresses in multiple segments of the nephron.
  • 4.4K
  • 01 Mar 2022
Topic Review
Tudor Rose
The Tudor rose (sometimes called the Union rose) is the traditional floral heraldic emblem of England and takes its name and origins from the House of Tudor, which united the House of Lancaster and the House of York. The Tudor rose consists of five white inner petals, representing the House of York, and five red outer petals to represent the House of Lancaster.
  • 4.4K
  • 16 Nov 2022
Topic Review
A Complete Solution to the Millennium Prize Problems
The seven Millennium Prize Problems, announced by the Clay Mathematics Institute in 2000, represented the highest peaks of mathematical inquiry at the turn of the century. They were considered the deepest and most fundamental questions left unanswered by the mathematics of the past. For decades, progress was made in fragments, with brilliant minds chipping away at the edges of these monolithic challenges. The resolution of these problems was not to be found in the incremental application of existing techniques, but required a paradigm shift in our understanding of logic, number, and form—a new language to describe the universe.
  • 4.4K
  • 11 Aug 2025
Topic Review
Intraretinal Fluid Pattern Characterization
The accumulation of fluids in the retinal layers is one of the main causes of blindness in developed countries. The main strategy for its study and diagnosis is through the use of Optical Coherence Tomography (OCT) images. This allows experts to observe the layers of the retina in a cross-sectional view. Commonly, for the analysis of these accumulations by means of computer diagnostic support systems, precise segmentation strategies are employed.
  • 4.4K
  • 22 Apr 2021
Topic Review
Precooling and Cold Storage for Fruits and Vegetables
Cold chain systems, such as cold storages, are crucial to minimizing postharvest losses of fresh fruits and vegetables. Cold storage alone cannot prevent crop losses, but should be considered as one component that needs to be integrated into a cold chain network from the point of harvest to the point of purchase by the consumer. Cold chains are still in their infancy in developing countries due to the lack of basic infrastructure and management skills needed to support the development of integrated cold chain systems.
  • 4.4K
  • 08 Sep 2022
Topic Review Video
Classification of Energy Storage Technologies
The intensive exploitation and usage of fossil fuels has led to serious environmental consequences, including soil, water, and air pollution and climate changes, and it has compromised the natural resources available for future generations. In this context, identifying new energy storage technologies can be considered a sustainable solution to these problems, with potential long-term effects.
  • 4.4K
  • 19 Jan 2024
Topic Review
Iron Complexation and Flavonoids
Flavonoids are common plant natural products able to suppress ROS-related damage and alleviate oxidative stress. One of key mechanisms, involved in this phenomenon is chelation of transition metal ions. From a physiological perspective, iron is the most significant transition metal, because of its abundance in living organisms and ubiquitous involvement in redox processes. The chemical, pharmaceutical, and biological properties of flavonoids can be significantly affected by their interaction with transition metal ions, mainly iron.
  • 4.4K
  • 26 Jan 2021
Topic Review
Tranditional Use and Nutritional Value of Lansium domesticum
Lansium domesticum (Langsat, Meliaceae) is a tropical fruit mainly found in Southeast Asian countries, particularly in Thailand, Malaysia, Indonesia, and the Philippines.
  • 4.4K
  • 21 Apr 2022
Topic Review
World View
A world view or worldview is the fundamental cognitive orientation of an individual or society encompassing the whole of the individual's or society's knowledge and point of view. A world view can include natural philosophy; fundamental, existential, and normative postulates; or themes, values, emotions, and ethics. The term is a calque of the German word Weltanschauung [ˈvɛltʔanˌʃaʊ.ʊŋ] (listen), composed of Welt ('world') and Anschauung ('view' or 'outlook'). The German word is also used in English. It is a concept fundamental to German philosophy and epistemology and refers to a wide world perception. Additionally, it refers to the framework of ideas and beliefs forming a global description through which an individual, group or culture watches and interprets the world and interacts with it. Worldview remains a confused and confusing concept in English, used very differently by linguists and sociologists. It is for this reason that James W. Underhill suggests five subcategories: world-perceiving, world-conceiving, cultural mindset, personal world, and perspective. Worldviews are often taken to operate at a conscious level, directly accessible to articulation and discussion, as opposed to existing at a deeper, pre-conscious level, such as the idea of "ground" in Gestalt psychology and media analysis. However, core worldview beliefs are often deeply rooted, and so are only rarely reflected on by individuals, and are brought to the surface only in moments of crises of faith.
  • 4.4K
  • 26 Oct 2022
Topic Review
Biomechanical Factors in Track and Field Sprint Start
In athletics sprint events, the block start performance can be fundamental to the outcome of a race. Several biomechanical determinants of sprinters have been identified. In the “Set” position, an anthropometry-driven block setting facilitating the hip extension and a rear leg contribution should be encouraged. At the push-off, a rapid extension of both hips and greater force production seems to be important. After block exiting, shorter flight times and greater propulsive forces are the main features of best sprinters. 
  • 4.4K
  • 13 Apr 2022
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