scholarly journals 2,5-Dimethylfuran for Internal Combustion Engines: Potential and Development

2018 ◽  
Vol 3 (12) ◽  
pp. 106-111 ◽  
Author(s):  
Danh Chan Nguyen ◽  
Van Huong Dong

Transportation is facing two major challenges: renewable energy supplies and clean transport. On the other hand, the pressure from environmental pollution has led regulators around the world to come up with laws that have forced the auto and petrochemical industries to develop new technologies that reduce emissions and improve the quality of life. fuel economy. 2,5-Dimethylfuran (DMF), which is considered to be a new generation of promising alternative fuels, has the potential to reduce global fossil fuel shortage and air pollution problems. This article introduces the technical specifications and emissions of 2,5-Dimethylfuran (DMF), DMF production and application potential, developing DMF as alternative fuel sources in the World and in Vietnam.

2010 ◽  
Vol 14 (suppl.) ◽  
pp. 15-25 ◽  
Author(s):  
Masa Bukurov ◽  
Milun Babic ◽  
Blazo Ljubicic

There are very few issues that are as important to our collective future as energy. Like everyone else, Serbia has its stake in reducing energy price, enhancing the security of energy supply, and reducing emissions, including greenhouse gas (GHG) emissions associated with fossil fuels. In the years to come Serbian economy is expected to grow and industry to search and explore the potential of using cleaner alternative fuels. There is a lot that could be done to conserve energy and to reduce environmental footprint. But the most important thing that could be done to enable Serbian industry to reduce emissions is the implementation of a modernized Power Generation system. At the same time the reality can?t be neither sugarcoated nor ignored and alternatives to fossil fuel will succeed only if they are economically feasible for suppliers and users alike. New technologies currently under development should be considered to allow Serbia the use of energy resources in a more efficient ways and with better protection of the environment. If successfully deployed, the development of alternative, renewable fuels will allow Serbian energy sector to effectively decouple its growth from GHG emissions. This paper explore opportunities and the potential of alternative fuels for increasing competition in energy supply, for reducing emissions and in Serbia while decreasing dependence on imported energy.


Author(s):  
Dr. Pradipta Mukhopadhyay

Digital Economy refers to an economy which is based on digital computing technologies and can also be referred to as internet economy or web economy as the business activities are conducted through markets based on the internet or the World Wide Web. A Digital Economy also refers to the usage of various digitised information and knowledge to perform various economic activities and uses various new technologies like Internet, Cloud Computing, Big Data Analytics to collect, store and analyse information digitally. This way the modern digital economies are helping the local and regional business organisations to come out of their local boundaries and step into the global scenario to take advantages of the modern liberalisation policies of the governments along with reduced trade barriers throughout the world. This paper will study the importance of digital economy in the modern world along with the difference between the traditional economy and the digital economy and the current state of digital economy in India. This Study has been casual, exploratory and empirical in nature and the data needed for research work has been collected by using both direct and indirect method of data collection.


Author(s):  
Samiddha Palit ◽  
Bijan Kumar Mandal ◽  
Sudip Ghosh ◽  
Arup Jyoti Bhowal

Fast depletion of the conventional petroleum-based fossil fuel reserves and the detrimental effects of the pollutant emissions associated with the combustion of these fuels in internal combustion (IC) engines propelled the exploration and development of alternative fuels for internal combustion engines. Biodiesel has been identified as one of the most promising alternative fuels for IC engines. This paper discusses about the advantages and disadvantages of biodiesel vis-a-vis the conventional petro-diesel and presents the energetic performances and emission characteristics of CI engine using biodiesel and biodiesel-petrodiesel blends as fuels. An overview of the current research works carried out by several researchers has been presented in brief. A review of the performance analysis suggests that biodiesel and its blends with conventional diesel have comparable brake thermal efficiencies. The energy balance studies show that biodiesel returns more than 3 units of energy for each unit used in its production. However, the brake specific fuel consumption increases by about 9–14% compared to diesel fuel. But, considerable improvement in environmental performance is obtained using biodiesel. There is significant reduction in the emissions of unburned hydrocarbons, polyaromatic hydrocarbons (PAHs), soot, particulates, carbon monoxide, carbon dioxide and sulphur dioxide with biodiesel. But the NOx emission is more with biodiesel compared to diesel. A case study with Jatropha biodiesel as fuel and the current development status, both global and Indian, of biodiesel as a CI engine fuel have been included in the paper.


In developing nations, and on the African continent in particular, the uptake and impact of technological and other developments is often slower than in other parts of the world. While pockets of development exist on the continent as a source of work, education and access much of Africa remains trapped in a cycle of poverty.In this worldwide health crisis, the medical industry is looking for new technologies to monitor and controls the spread of COVID19 (Coronavirus) pandemic. AI is one of such technology which can easily track the spread of this virus, identifies the high-risk patients, and is useful in controlling this infection in real-time. Educators have created online classrooms in a matter of days. Information resources to educate the public and track the spread of the virus using big data sprang up seemingly overnight. Finally, those of us fortunate enough to have jobs that allow us to work from home are learning the full potential of the communication technologies that the 21stcentury has bestowed upon us. None of these tasks have been easy, but individuals and organizations have demonstrated the motivation and mind shifts needed to research, innovate, and act quickly.AI embodies the field of knowledge that seeks to create machines (computers) thatcan emulate human cognitive functions such as learning, reasoning, understanding, vision, perception, recognition, and problem solving to a reasonable level. Computers that have AI capabilities are currently being used in severalreal-worlddomains to solve problems. AI has already played a significant role in each stage of fighting the COVID-19 pandemic. Some areas where we saw immediate applications include the processing of large amounts of data to find patterns that could lead to the discovery of potential treatment drugs; as well astreating infected people.The novel aspect of this pandemic involves several unknowns and is likely to have a lingering impact for years to come. However, despite the current climate, I am somewhat comforted that the history of past pandemics and crises suggests an eventual recovery plan for the world. After all, necessity is the mother of all invention. New creations arise out of disruption.


Author(s):  
Alexander Ricci ◽  
Bryan Schlake

As railroads and local industries served by rail seek to reduce emissions and improve fuel efficiency, new technologies are being developed to serve this market. Contrary to the minimal competitive options available over the last several decades, new companies are now emerging with a variety of locomotive designs aimed at low emissions and low horsepower solutions. Some technologies involve alternative fuels (e.g. natural gas, bio-diesel, battery power, etc.), while others incorporate very low horsepower diesel engines (400hp–1000hp) in order to meet the Tier 4 regulations set by the Environmental Protection Agency (EPA). Yet another option available to railroads and local industries is the mobile railcar mover. Typically used within railroad yard limits or on industry tracks, yard and industrial switchers and mobile railcar movers travel short distances, but must be capable of moving large loads. Subject to high forces when moving cars, these technologies must be both resilient (requiring minimal maintenance) and safe (not subject to derailment or loss of control). As the current market for yard and industrial switchers continues to expand, both railroads and local industries served by rail are placing greater emphases on the environmental and economic benefits of the emerging technologies. This paper aims to analyze the current yard and industrial switcher market and draw conclusions based on emissions data and lifecycle costs. Industrial switchers are compared with yard switchers and mobile railcar movers. Although industrial switchers are more limited in horsepower and operational versatility than yard switchers, many of the daily operations between the two are similar. Mobile railcar movers (e.g. Trackmobile® and Rail King®) offer lower initial costs as well as the versatility of both on-track and off-track movement. However, they may require additional maintenance and offer reduced tractive effort compared to locomotive technologies. As the demands on railroad yard and industry operations grow increasingly complex due to environmental regulations and economic demands, these new technologies have the potential to increase competition in the marketplace and offer improved engineering solutions. By developing a hierarchy of key requirements of yard or industry switchers, this paper provides a framework for identifying the best options available to a railroad or local industries. The scope of this paper will include a review of all options available, but will place a greater emphasis on technologies that are commercially available for wide distribution. By sampling and analyzing the current industrial market, much insight can be gained into daily operational requirements and challenges faced by this sector of the industry.


2021 ◽  
Vol 3 (1(82)) ◽  
pp. 43-52
Author(s):  
O. Dvoryankin

The article attempts to analyze the development of the world community and ordinary people in the context of the creation and development of new technologies, especially 5G and 5D. The article presents a historical analysis of their development and formation, as well as possible prospects for their influence on us not only in the near future, but also in the future to come. At the same time, the author in the article focuses on the fact whether we are ready for this future, and whether we created it or are ready to quickly create a "safety cushion", i.e. "information security", both of a personal and public nature.


2015 ◽  
Vol 787 ◽  
pp. 776-781
Author(s):  
V. Venkatesan ◽  
N. Nallusamy

Biodiesel is one of the promising alternative fuels for automotive engines due to the depletion of fossil fuel resources, increasing energy demands and environmental concerns. The biodiesel can be obtained from various bio energy resources such as edible and non-edible vegetable oils and animal fats. However, the use of biodiesel derived from edible oils such as palm oil, sunflower oil and soybean oil has negative impact on global food market. Biodiesel from microalgae is considered as a third generation biofuel derived from non-edible resources and best suited for internal combustion engines. Microalgae have the potential to provide sufficient fuel for global consumption due to its high oil content and fast growing ability. This paper provides a brief overview of biodiesel production from microalgae biomass and its suitability as alternate fuel in diesel engines. This review highlights the selection of suitable algae species for oil production, fuel properties in comparison with standard diesel and other biodiesel fuels, performance, combustion and emission characteristics when used in engines, and the economical aspects. Further, the research and development aspects of biodiesel from microalgae as fuel for automobile diesel engines are also reviewed.


Author(s):  
Andrei-Constantin SOFIAN ◽  
Mădălin-Florin POPA ◽  
Bogdan Manolin JURCHIȘ

The automotive industry is responsible for a big part of the pollutant emissions, and the measures that are being taken to reduce these emissions are extremely important. Compared to 1990 emissions of nitrogen oxides from internal combustion engines decreased approximately by 39%, and for PM 2.5 by 37%. Even so, emissions concerns have increased in recent years, so the EU has taken a series of measures to continuously reduce emissions of nitrogen oxides and carbon monoxide related to transport sector. It is well known that the replacement, even partial, of fossil fuels with alternative fuels has a significant contribution to the decarbonisation of trans-European transport, which reduces the environmental impact of this sector. With a share of around 4.7% of all fuels used in EU transport, biofuels are the main type of alternative fuel. In addition, if produced sustainably, biofuels help reduce emissions of carbon monoxide and solid particles, but at certain operating intervals, the engine can produce more NOx emissions, which is why diesel engines must be equipped with additional NOx emission treatment systems.


Genetika ◽  
2020 ◽  
Vol 52 (3) ◽  
pp. 1055-1073
Author(s):  
Vera Popovic ◽  
Savo Vuckovic ◽  
Zoran Jovovic ◽  
Nikola Rakascan ◽  
Marko Kostic ◽  
...  

Biodiesel and biogas are especially important sources of renewable energy in the world and in Serbia. Biodiesel is used as transportation fuel; biogas is used for production of electricity and heat. Soybean (Glycine max L.) grain is the primary source of vegetable protein for food and feed supplements, also accounts for much of the world?s bio-oil supply. Due to the development of new technologies for processing agricultural waste into energy, the rate of increase in the use of alternative fuels is significantly increasing. The aim of this study was to determine the productivity of soybeans and the possibility of obtaining biogas from soybeans in divergent years, 2017-2019. Main effects were monitored, genotypes (G), years (Y) and genotype by years interaction effects (G x Y) and were used for evaluation of soybean genotypes in different environments. Soybean varieties were tested for mass of 1000 grain (MTG), plant height (PH), grain yields (GY) and biogas yield (BY). Stability of grain and biogas yield was determined to select best genotype. Results showed that genotype and years had a significant impact on all measured variables. In all tested years, the biggest GY and BY were at genotypes G1 (2.40-4.49 t ha-1, and 461.00-641.00 m3 ha-1, respectively) and G3 (1.97-4.30 t ha-1; i.e. 447.67-620.00 m3 ha-1). Genotype G2 had statistically significantly lower values for all tested parameters compared to other tested genotypes. Correlation analysis of some chosen traits showed different interdependence between measured variables depending on the year conditions. The results of this study pointed out that among best genotypes for production of grain and biogas were G1 and G3. From the results of this study it can be concluded that G x Y trials are important for evaluation of stability and choosing the most stable genotypes of soybean.


Vaccines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1420
Author(s):  
Rayen Yanara Valdivia-Olivares ◽  
Maria Rodriguez-Fernandez ◽  
María Javiera Álvarez-Figueroa ◽  
Alexis M. Kalergis ◽  
José Vicente González-Aramundiz

The World Health Organization estimates that the pandemic caused by the SARS-CoV-2 virus claimed more than 3 million lives in 2020 alone. This situation has highlighted the importance of vaccination programs and the urgency of working on new technologies that allow an efficient, safe, and effective immunization. From this perspective, nanomedicine has provided novel tools for the design of the new generation of vaccines. Among the challenges of the new vaccine generations is the search for alternative routes of antigen delivery due to costs, risks, need for trained personnel, and low acceptance in the population associated with the parenteral route. Along these lines, transdermal immunization has been raised as a promising alternative for antigen delivery and vaccination based on a large absorption surface and an abundance of immune system cells. These features contribute to a high barrier capacity and high immunological efficiency for transdermal immunization. However, the stratum corneum barrier constitutes a significant challenge for generating new pharmaceutical forms for transdermal antigen delivery. This review addresses the biological bases for transdermal immunomodulation and the technological advances in the field of nanomedicine, from the passage of antigens facilitated by devices to cross the stratum corneum, to the design of nanosystems, with an emphasis on the importance of design and composition towards the new generation of needle-free nanometric transdermal systems.


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