2021, Vol. 19, Special Issue 1
Recent Submissions
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Use of principal component analysis to evaluate thermal properties and combustibility of coffee-pine wood briquettes
(2021)The coffee production chain is a potential source of residual biomass inherent to the high productivity that can contribute to the generation of value-added products. The residues from the coffee sector are typically ... -
Improving ecological safety of agricultural off-road machines operating of sloped ground
(2021)The goal of this article is the analysis of the specific technical properties of the agricultural machinery to prevent the ecological impacts on nature in case of a machine accident. The loss of stability and overturning ... -
Carbon balance of biogas production from maize in Latvian conditions
(2021)Production of biogas using bioresources of agricultural origin plays an important role in Europe’s energy transition to sustainability. However, many substrates have been denounced in the last years as a result of ... -
Prospect on agro-industrial residues usage for biobutanol production
(2021)Climate changes, environmental pollution and resource depletion are one of the numerous major problems humanity faces. United Nations sustainable development goals are aimed at solving these problems. The requirement for ... -
Packing materials for biotrickling filters used in biogas upgrading – biomethanation
(2021)One of the promising methods of biogas upgrading is biological methanation (biomethanation). During biomethanation process hydrogenotrophic microorganisms use carbon dioxide from biogas and added hydrogen to generate ... -
Comparison of physical composition of municipal solid waste in Czech municipalities and their potential in separation
(2021)Czech Republic has been moving from landfill-based waste system toward resourcebased waste management system with an increasing rate of recyclable waste in the last years (38.6% of recycling by material and 11.7% of energy ... -
Solar electric tricycle development and research
(2021)Due to the fact that the world's energy resources are declining, various alternative energy sources are being sought. One such source of energy is solar energy. However, due to the large size of solar photovoltaic panels, ... -
Comparative analysis of the use of biostimulants on the main types of soil
(2021)A plant requires certain physiological conditions for normal and productive development. The determining vital factor is the nutritional status of the soil and the environment. At present, the biologization of agriculture ... -
An overview of measurement standards for power quality
(2021)Power Quality (PQ) is a vital aspect of electrical power systems, which cannot be neglected anymore, as an ample PQ guarantees the essential compatibility between consumer equipment and the electricity network. The ... -
New device for air disinfection with a shielded UV radiation and ozone
(2021)Indoor air disinfection has become particularly relevant recently because of the Covid-19 pandemics. A shielded device for air and surface disinfection with UV radiation and ozone has been developed. It contains 28 low ... -
Effects of storage on the properties of rapeseed oil and alcohol blends
(2021)Kinematic viscosity and density are important fuel properties because they influence fuel atomisation during injection into the engine cylinder. The viscosity and density of neat vegetable oils usually are too high to ... -
Influence of different methods of treating natural açai fibre for mortar in rural construction
(2021)Açai is a typical Amazonian fruit that has enormous potential for use in medicines and foods, whose consumption has been growing year after year. One of the major environmental impacts related to Açai is the generation ... -
Approach to a classification of construction typologies of pig facilities: case study Antioquia – Colombia
(2021)Pig facilities foro confined production in tropical countries such as Colombia does not specify, in the present moment a typological classification that allows researchers to carry out evaluations related to animal comfort ... -
Waste fish oil as an alternative renewable fuel for IC engines
(2021)Bio-oils are potential fuels for internal combustion engines because of they have advantageous properties such as biodegradability, renewability, high oxygen content and low sulphur. However, the high viscosity, surface ... -
Productive efficiency and density and viscosity studies of biodiesels from vegetable oil mixtures
(2021)Currently in Brazil the minimum content of biodiesel in mixtures is 11% and, according to Brazilian laws, the goal is to reach 15% in volume in diesel fuel available for final consumers by 2023. Therefore, studies about ... -
Evaluation of passive cooling system in plywood enclosure for agricultural robot prototype
(2021)The use of autonomous robots in agriculture has been increasing rapidly in recent years, but is hampered by the complexity of data recording and processing. The prototyping process involves many changes to the housing ... -
Research into engineering and operation parameters of mineral fertiliser application machine with new fertiliser spreading tools
(2021)The output capacity of the machine for top spreading the soil with solid mineral fertilisers can be raised by means of increasing its working width. The authors have carried out field trials and field experiment ... -
Compositional evaluation of hot-pressed rapeseed cake for the purpose of bioplastic production
(2021)Rapeseed is widely cultivated for biodiesel or food-grade oil production. As the oil production process generates huge amounts of wastes and by-products (e.g. oil press cake and meal) that have relatively high crude ... -
Operation of the photovoltaic system in Prague and data evaluation
(2021)The on-grid photovoltaic system was installed at the Faculty of Engineering in 2015. The monitoring system developed in our laboratory monitors data and can also detect failure and type of failure. The evaluation of the ... -
Thermo mechanical vibration of single wall carbon nanotube partially embedded into soil medium
(2021)Single wall carbon nanotube is one of the promising forms of carbon nanocomposite. Due to its high strength and stiffness, carbon nanotube is potentially used in various nanoscale structures. In this paper, dynamic ...
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