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You searched for: Journal Acta technologica agriculturae Remove constraint Journal: Acta technologica agriculturae Publication Year 2018 Remove constraint Publication Year: 2018 Source 2018 v.21 no.4 Remove constraint Source: 2018 v.21 no.4
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1. Deformation of Exposed Tool Parts for Crushing of Undesirable Advance Growth

Author:
Ťavodová, Miroslava; Džupon, Miroslav; Kalincová, Daniela; Hnilicová, Michaela
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 166-173
ISSN:
1338-5267
Subject:
advanced regeneration; crushing; deformation; hardness; impact load; mulching; prices; surface area; topography; wood
Abstract:
... Tools for crushing of undesirable advance growth and mulching wood are subjected to heavy wear in operation with the need for their frequent replacement shortly after deployment. It is important to address the problem of their wear due to price of tools, as well as the time necessary for their replacement. Tool life is shortened because of deformation taking place due to the loss of wolfram-carbid ...
DOI:
10.2478/ata-2018-0030

2. Determination of Melting Unit Productivity in Synthetic Fibrous Materials Production by Vertical Blowing Method

Author:
Sviatskii, Vladislav; Božek, Pavol; Sokolov, Mikhail
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 136-140
ISSN:
1338-5267
Subject:
air; equipment; melting; models
Abstract:
... This paper presents the technology of production of synthetic fibrous materials from PET-raw by vertical blowing method. Fibre production by vertical blowing method is accompanied by complex and specific phenomena; therefore, development of new progressive technologies, high-performance machines and units for producing such materials is impossible without process modelling, which can significantly ...
DOI:
10.2478/ata-2018-0025

3. Effect of Biobutanol-Sunflower Oil-Diesel Fuel Blends on Combustion Characteristics of Compression Ignition Engine

Author:
Čedík, Jakub; Pexa, Martin; Peterka, Bohuslav; Holůbek, Michal; Mader, Daniel; Pražan, Radek
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 130-135
ISSN:
1338-5267
Subject:
biofuels; butanol; combustion; diesel fuel; temperature; tractors
Abstract:
... Based on many regulations the biofuels are widely used in combustion engines. The operational parameters, such as performance parameters or emission production, are often monitored. The essence of changes to these operational parameters is related to the effect of biofuels on the course of cylinder pressure inside the combustion chamber. The contribution deals with the effect of biobutanol-sunflow ...
DOI:
10.2478/ata-2018-0024

4. Empirical Models and Process Optimization for Prediction of Nutritional Parameters of Stored Cowpea Variety (IT96D-610K)

Author:
Sunmonu, Musliu Olushola; Odewole, Michael Mayokun; Oyeleke, Ibukunolowa Omotola; Otitodun, Grace Olufunke; Omobowale, Mobolaji; Ogundare, Moses Odunayo
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 141-148
ISSN:
1338-5267
Subject:
ash content; carbohydrate content; carbohydrates; computer software; cowpeas; crude fiber; crude protein; empirical models; equations; particle size; prediction; prototypes; relative humidity; silos; steel; storage conditions; temperature; water content
Abstract:
... This paper presents a study carried out to develop empirical models and process optimization for prediction of nutritional parameters of stored cowpea variety (IT96D-610K). Twelve small scale prototype silos made of two different materials (wooden and galvanised mild steel) were constructed and used in the storage of the cowpea for a 4-month period. Seven kilograms of cowpea at 9.88% moisture cont ...
DOI:
10.2478/ata-2018-0026

5. Influence of Rheological Properties of a Soil Layer Adjacent to the Working Body Cutting Element on the Mechanism of Soil Cultivation

Author:
Aulin, Victor; Lyashuk, Oleg; Tykhyi, Andrii; Karpushyn, Sergiy; Denysiuk, Nadia
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 153-159
ISSN:
1338-5267
Subject:
cutting; deformation; edaphic factors; fields; models; rheometers; steam; strain gauges; tillage; virgin soils; viscoelasticity; Austria
Abstract:
... On the basis of rheological characteristics, stress fields and deformations, new methods of improving the mechanism of soil cultivation are substantiated in this article. The mechanism of soil destruction is observed. Paper investigates the process of changing the stressed-deformed state of the soil under the influence of the working body. To study the viscoelastic properties of black earth soil, ...
DOI:
10.2478/ata-2018-0028

6. Semi-Autonomous Drone for Agriculture on the Tractor Base

Author:
Kashkarov, Anton; Diordiiev, Volodymyr; Sabo, Andrii; Novikov, Gennadii
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 149-152
ISSN:
1338-5267
Subject:
atmospheric pressure; environmental factors; gardens; industry; sprayers; spraying; temperature; tractors; vineyards; Ukraine
Abstract:
... This paper deals with the prospects of using a drone for spraying the gardens and vineyards. Relevance of this process is substantiated with the help of statistical data on the industry in Ukraine. To increase the efficiency of drones during the plant treatment, the concept of a semi-autonomous drone is proposed with connection to a communication line with a tractor – a “tractor-drone” complex. A ...
DOI:
10.2478/ata-2018-0027

7. The Study of Movement of the Wide Span Tractor-Based Field Machine Unit with Power Method of its Control

Author:
Bulgakov, Volodymyr; Kuvachov, Volodymyr; Nozdrovický, Ladislav; Findura, Pavol; Smolinskyi, Stanislav; Ihnatiev, Yevhen
Source:
Acta technologica agriculturae 2018 v.21 no.4 pp. 160-165
ISSN:
1338-5267
Subject:
automation; control methods; controlled traffic systems; dynamic models; energy; mathematical models; mechanics; reproduction; tractors
Abstract:
... Recently, rapid development of controlled traffic farming convincingly demonstrates the broad prospects of using the wide span tractor-based field machines throughout the world. The issue at hand lies in the fact that having a wide span tractor-based machine with steering-wheel system moving along the tracks of a constant technological track is not a rational option. According to the concept of br ...
DOI:
10.2478/ata-2018-0029