scholarly journals Traction and drawbar performance characteristics of power tiller attached cage wheel

BIBECHANA ◽  
2015 ◽  
Vol 13 ◽  
pp. 38-49
Author(s):  
Piyush Pradhan ◽  
Ajay Verma ◽  
Rajesh Naik ◽  
Prabhat Guru
Keyword(s):  
Clay Soil ◽  
Field Capacity ◽  
Performance Characteristics ◽  
Small Power ◽  
Different Types ◽  
Wet Condition ◽  
Power Tiller ◽  
Tractive Efficiency ◽  
Flood Condition ◽  
Maximum Field

The study was carried out in the research farm of Indira Gandhi Agricultural University Raipur Chhattisgarh in June 2014. To evaluate drawbar and tractive power of  4.85kW of  power tiller cultivator attached with two different types of cage wheel of half width (C1) and angle type wheels (C2) for a small power tiller operated in clay soil of  wet land and flood condition. It was found that the maximum draft values of C1 and C2 were 1192N and 1039N in flood condition and 1318N and 1225N in wet condition. The results showed that maximum tractive efficiency was for cage wheel  C1 and C2 values were 72.91% and 69.86% in puddle soil. The maximum field capacity was 0.084 ha/h for cage wheel C2 in puddle soil.BIBECHANA 13 (2016) 38-49

scholarly journals An Experimental Study on the Effect of Tire Powder on the Geotechnical Properties of Clay Soils

2018 ◽  
Vol 4 (3) ◽  
pp. 594 ◽  
Author(s):  
Davood Akbarimehr ◽  
Esmael Aflaki
Keyword(s):  
Clay Soil ◽  
Geotechnical Properties ◽  
Atterberg Limits ◽  
Clay Soils ◽  
Positive Effects ◽  
Advantages And Disadvantages ◽  
Different Types ◽  
Problematic Soils ◽  
Geotechnical Problems ◽  
Comprehensive Study

With respect to the increasing production of tire wastes, the use of these wastes as an additive in civil engineering has always gained attentions of researchers due to their positive effects on material properties and reduction of environmental problems. Clay soils, as problematic soils, have always caused geotechnical problems including high Atterberg limits and consequently low workability. Tire powder, as one of the products of tire wastes, lacks clay cohesion and it can be effective in altering the plasticity of clay soils. As no comprehensive study has been conducted in this regard specifically on Tehran clay soil yet, this research studies experimentally the effect of adding different percentages of tire powder to clay soil at the Atterberg limits of clay soils with two different types of plasticity. More over according to previous studies, the effect of tire powder on other geotechnical properties of clay soils and the advantages and disadvantages of using tire powder in clay soils are discussed. The results indicate that addition of tire powder to clay soils has positive effects on reducing the Atterberg limits, increasing efficiency, and improving resistance, permeability, swelling reduction, and settlement properties, and reducing soil density and it can be used as an additive in improving clay soils.

scholarly journals Evaluation of cotton stalks destroyers

2013 ◽  
Vol 33 (5) ◽  
pp. 965-975 ◽  
Author(s):  
Aloisio Bianchini ◽  
Pedro H. de M. Borges
Keyword(s):  
Soil Type ◽  
Energy Demand ◽  
Crop Residues ◽  
Clay Soil ◽  
Field Capacity ◽  
Soil Types ◽  
Mechanical Destruction ◽  
Cotton Crop ◽  
Cotton Stalks ◽  
Medium Texture

The destruction of the cotton crop residues (cotton stalks) is a mandatory procedure in Brazil for prophylactic issues, but is a subject unexplored by the research and there are few studies that deal with this issue. However, this is not encouraged in recent decades, studies aimed at developing and evaluating equipment for this purpose. The present study had the objective to evaluate six methods for mechanical destruction of cotton crop residues. Each method was defined based on the principle of operation of the active parts of the equipment, which were tested in medium texture soil and in a clayey one. The variables used to evaluate the efficiency of the equipment were the regrowth rate, the theoretical field capacity and energy demand. The equipment with convergent concave disks (DCC) and flat cutters discs from manufacturer A (CPS-a) showed the best results in cotton stalks destruction in both soil types. The harrow disc (GPD) was efficient only in clay soil. It was concluded that the equipment with convergent concave disks, among those tested, was the most efficient to destroy cotton stalks, regardless of soil type, and that the harrow disc was not included among the best performers.

scholarly journals Improvement of Soft Clay Soil Using Different Types of Additives

2021 ◽  
Vol 856 (1) ◽  
pp. 012010
Author(s):  
Omer A. Abd-Allah ◽  
Safa H. Abid Awn ◽  
Raquim N. Zehawi
Keyword(s):  
Clay Soil ◽  
Soft Clay ◽  
Different Types

scholarly journals Power Tillers for Demining: Blast Test

10.5772/5690 ◽  
2007 ◽  
Vol 4 (2) ◽  
pp. 28 ◽  
Author(s):  
Emanuela Elisa Cepolina ◽  
Manjula Udayanga Hemapala
Keyword(s):  
Shock Wave ◽  
Developing Countries ◽  
Large Scale ◽  
Cutting Tool ◽  
Participatory Approach ◽  
Humanitarian Demining ◽  
Core Module ◽  
Different Types ◽  
Preliminary Version ◽  
Power Tiller

Power tillers are very simple and versatile machines with large scale diffusion in developing countries, where they are commonly used both for agriculture and for transportation purposes. A new integrated participatory approach that makes use of and improves local end-users knowledge has been used to design a new robotic system for humanitarian demining applications in Sri Lanka, using power tiller as core module. A demining machine composed by a tractor unit, a ground processing tool and a vegetation cutting tool is here presented together with results obtained from the first blast test on the preliminary version of tractor unit armouring. Different breakable connections between wheels and axle have been designed to cause physical detachment and interrupt the transmission of the shock wave released by the explosion of a mine under one wheel. Effects of explosions on different types of wheels and on the chassis have been recorded and commented.

Performance of Calorimeter Systems

2018 ◽  
Author(s):  
Richard Wigmans
Keyword(s):  
Energy Resolution ◽  
Line Shape ◽  
Scientific Literature ◽  
Performance Characteristics ◽  
Generation Mechanism ◽  
Particle Identification ◽  
Signal Generation ◽  
Pile Up ◽  
Different Types

The most important practical aspects of the performance of calorimeter systems are reviewed. Each aspect is illustrated with examples published in the scientific literature. One of the most important performance characteristics is the energy resolution, which is shown separately for electrons, hadrons and jets. The same distinction is also made for the position and angular resolutions that are achieved in practice. The time characteristics of the calorimeter signals, which are important for a variety of purposes (e.g. pile-up), depend on the signal generation mechanism (Cherenkov, scintillation). The e/h values of different types of calorimeters, as well as the effects of non-compensation in these devices (non-linearity, line shape, resolution), are reviewed. It is shown how calorimeter data can be used for particle identification purposes, and how the granularity affects the capability to recognize close doublets as such. The chapter ends with a brief review of the different tasks typically carried out by calorimeters in modern experiments.

scholarly journals Effect of Hydropriming and soil moisture regimes on yield and yield components of maize (Zea mays L.)

2015 ◽  
Vol 39 (3) ◽  
pp. 505-513
Author(s):  
KU Ahammad ◽  
MM Rahman ◽  
MAM Molla ◽  
MG Azam
Keyword(s):  
Soil Moisture ◽  
Zea Mays L ◽  
Agricultural Research ◽  
Field Capacity ◽  
Research Field ◽  
Research Station ◽  
Maize Seeds ◽  
Moisture Regimes ◽  
Days To Maturity ◽  
Wet Condition

The experiment was conducted at the research field of Regional Agricultural Research Station, Jessore during two consecutive rabi seasons of 2008-2009 and 2009-2010 to find out the effect of hydropriming on the performance of maize seeds under variable soil moisture regimes. The treatments of the experiment were two priming methods viz., i) Hydropriming, ii) Non-priming and four moisture regimes viz., i) Wet condition, ii) Field capacity, iii) 75% of field capacity, and iv) 50% of field capacity. Results showed that yield and yield contributing characters (plant population/m2, number of cobs/m2, length of cob, diameter of cob, 100-grain weight) were influenced significantly by hydropriming. Yield and yield contributing characters were highest when hydroprimed seeds were sown at field capacity whereas it was the lowest at 75% of field capacity from non- primed seeds. Days to tasseling, days to silking, and days to maturity were reduced when hydroprimed seeds were sown at field capacity. At 50% of field capacity, no germination was occurred. DOI: http://dx.doi.org/10.3329/bjar.v39i3.21993 Bangladesh J. Agril. Res. 39(3): 505-513, September 2014

Possibilities of wireless power supply

2010 ◽  
Vol 2 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Jan Kracek ◽  
Milos Mazanek
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
Power Input ◽  
Wireless Power ◽  
Basic Principles ◽  
Small Power ◽  
Transmission Distance ◽  
Different Types ◽  
Wireless Power Supply ◽  
Frequency Power

This paper presents an overview of the principles suitable for wireless power supply of devices with a small power input in picocells. This means predominantly different types of small electric devices in the space of rooms. Basic principles, namely electromagnetic induction and electromagnetic wave, are explained using examples of developed systems. Different types of wireless power systems are compared with respect to efficiency, frequency, power, and transmission distance.

scholarly journals Performance Characteristics of Single-Phase Self-Excited Induction Generators with an Iron Core of Various Non-Grain Oriented Electrical Sheets

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3166
Author(s):  
Krzysztof Makowski ◽  
Aleksander Leicht
Keyword(s):  
Steady State ◽  
Single Phase ◽  
Magnetic Core ◽  
Performance Characteristics ◽  
Iron Core ◽  
The Core ◽  
Induction Generators ◽  
Different Types ◽  
Load Characteristics ◽  
Steady State Performance

This paper deals with the computation of the performance characteristics of the single-phase self-excited induction generator by field–circuit method. It presents and compares previously unpublished results—self-excitation and no-load characteristics of the generator for different rotor speeds, and complete load steady-state performance characteristics for various types of the core materials. The discrepancies between the performance characteristics of the generator for the catalog’s magnetization curves of different types of electrical sheets and for an actual magnetic core of the generator for self-excitation transients and load steady-state are presented. The results may be useful for designing new constructions of single-phase self-excited induction generators.

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