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Topic Review
Type I Collagen
Type I collagen, the predominant protein of vertebrates, assembles into fibrils that orchestrate the form and function of bone, tendon, skin, and other tissues. Collagen plays roles in hemostasis, wound healing, angiogenesis, and biomineralization, and its dysfunction contributes to fibrosis, atherosclerosis, cancer metastasis, and brittle bone disease.
  • 1.5K
  • 26 Jan 2021
Topic Review
Historic Timber Structures with Stainless Steel
The use of stainless steel components, particularly in new constructions, has experienced a huge increase in recent times. Stainless steel is now widely used for both non-structural applications and as ribbed reinforcement bars for concrete, members (beams, columns, ties, etc.) in trusses, bridges and buildings. Similar to structural carbon steel, stainless steel elements can be hot rolled and fabricated or cold rolled formed. 
  • 1.5K
  • 28 Mar 2022
Topic Review
Modeling Approaches of Biogas Production
Biogas production is a relevant component in renewable energy systems. Model approaches of biogas production show different levels of detail. They can be classified as white, gray, and black box, or bottom-up and top-down approaches. On the one hand, biogas modeling can supply dynamic information on the anaerobic digestion process, e.g., to predict biogas yields or to optimize the anaerobic digestion process. These models are characterized by a bottom-up approach with different levels of detail: the comprehensive ADM1 (white box), simplifications and abstractions of AD models (gray box), or highly simplified process descriptions (black box). On the other hand, biogas production is included in energy system models. These models usually supply aggregated information on regional biogas potentials and greenhouse gas emissions. They are characterized by a top-down approach with a low level of detail. Most energy system models reported in literature are based on black box approaches. Considering the strengths and weaknesses of the integration of detailed and deeply investigated process models in energy system models reveals the opportunity to develop dynamic and fluctuating business models of biogas usage. 
  • 1.5K
  • 29 Jul 2021
Topic Review
Agrivoltaic Systems Design
An agrivoltaic system is a complex system, being, at least, a spatial, an energy and an agronomic system. Its design and assessment must adhere to requirements set depending on the project’s needs in order to meet desired performance quality objectives. Different dimensions of performance need to be taken into account.
  • 1.5K
  • 18 Nov 2021
Topic Review
Building Design for Preventing COVID-19 Pandemic
Sustainable design methods aim to obtain architectural solutions that assure the coexistence and welfare of human beings, inorganic structures, and living things that constitute ecosystems. The novel coronavirus emergence, inadequate vaccines against the present severe acute respiratory syndrome-coronavirus-(SARS-CoV-2), and increases in microbial resistance have made it essential to review the preventative approaches used during pre-antibiotic periods. Apart from low carbon emissions and energy, sustainable architecture for facilities, building designs, and digital modeling should incorporate design approaches to confront the impacts of communicable infections. This review aims to determine how architectural design can protect people and employees from harm; it models viewpoints to highlight the architects’ roles in combating coronavirus disease 2019 (COVID-19) and designing guidelines as a biomedical system for policymakers. The goals include exploring the hospital architecture evolution and the connection between architectural space and communicable infections and recommending design and digital modeling strategies to improve infection prevention and controls. Based on a wide-ranging literature review, it was found that design methods have often played important roles in the prevention and control of infectious diseases and could be a solution for combating the wide spread of the novel coronavirus or coronavirus variants or delta. 
  • 1.5K
  • 24 May 2022
Topic Review
Plug-in Electric Vehicles in Japan
The fleet of light-duty plug-in electric vehicles in Japan totaled about 303,000 highway legal plug-in electric vehicles in circulation at the end of 2019, consisting of 152,320 all-electric passenger cars, 141,680 plug-in hybrids, and 8,720 light-commercial vehicles. The rate of growth of the Japanese plug-in segment slowed from 2013, with annual sales falling behind Europe, the U.S. and China since then. The segment market share fell from 0.68% in 2014 to 0.59% in 2016. Then the market share increased to 1.2% in 2017, and fell to 1.1% in 2018, and to 0.9% in 2019. Norway surpassed Japan as the country with the third largest plug-in car stock in use in 2019. The decline in plug-in car sales reflects the Japanese government and the major domestic carmakers decision to adopt and promote hydrogen fuel cell vehicles instead of plug-in electric vehicles, although the first commercially produced hydrogen fuel cell automobiles began in 2015. (As of April 2018), the Nissan Leaf all-electric car ranked as the all-time top selling plug-in electric vehicle in the country, with over 100,000 units sold since December 2010. Ranking second is the Mitsubishi Outlander P-HEV with 34,830 units delivered through August 2016, followed by the Toyota Prius PHV with 22,100 units sold through April 2016. (As of December 2012), Japan was the country with the highest ratio of quick charging points to electric vehicles (EVSE/EV), with a ratio of 0.030 (As of December 2012). The country's charging infrastructure included 1,381 public quick-charge stations and around 300 non-domestic slow charger points. The Japanese government has set up a target to deploy 2 million slow chargers and 5,000 fast charging points by 2020.
  • 1.5K
  • 04 Oct 2022
Topic Review
Roadable Aircraft
A roadable aircraft is a type of flying car. It is a hybrid vehicle that combines the flying capability of an aircraft with the option of being driven as an automobile on the ground. The roadable aircraft is typically recognized as a small plane with retractable wings that can fly in the open sky and to drive along roads. Most roadable aircraft have either integrated or modular components. In the U.S., the Defense Advanced Research Projects Agency (DARPA) has shown an interest in the concept with a $65 million program called Transformer to develop a four-person roadable aircraft by 2015. The vehicle is required to take off vertically, and have a 280-mile (450 km) range. AAI Corporation and Lockheed Martin were awarded contracts in late 2010 for the Phase 1 program. Lockheed Martin's design was selected to continue to Phase 3.
  • 1.5K
  • 10 Oct 2022
Topic Review
Sustainable development of infrastructure projects
This entry responds to the United Nations’ 2030 Sustainable Development Goals (SDG). In 2015, the international community responded to the sustainable development challenge with their report Transforming Our World: The 2030 agenda for sustainable development . The SDGs are the United Nations’ blueprint, with 193 nations signatories, to address the global challenges, such as poverty, inequality, climate change, environmental degradation, prosperity, peace and justice. The concept of sustainable development acquired its most cohesive definition in the United Nations’ 1987 Brundtland Commission report, which described it as “development that meets the needs of the present without compromising the ability of future generations to meet their own needs” . Using the “triple bottom line” , Ochieng, Price and Moore took the definition further by placing it in the context of global construction projects and describing it as the balance of economic, social and environmental aspects. In their book, they identify a number of systemic issues, “hard and soft” in nature, that provide new challenges for global construction projects in relation to sustainable development.
  • 1.5K
  • 26 Oct 2020
Topic Review
Electric Powertrain Architectures in Off-Road Equipment
Though the wave of electric vehicles is transforming the on-road passenger and commercial vehicle fleets, similar attempts in the off-road equipment sector appear to be lacking. Because of the diverse equipment categories and varied applications, electrifying off-road equipment requires significant research and development.
  • 1.5K
  • 26 Aug 2022
Topic Review
Big Three TV Networks
In the United States , there are three major traditional commercial broadcast television networks - CBS (Columbia Broadcasting System), NBC (National Broadcasting Company), and ABC (American Broadcasting Company) - that due to their longevity and ratings success are referred to as the "Big Three", which dominated American television until the 1990s, and are still considered major U.S. broadcast companies.
  • 1.5K
  • 08 Oct 2022
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