搜索结果: 1-15 共查到“农业生物物理学 Comparison”相关记录20条 . 查询时间(0.094 秒)
An Energy Absorption Comparison of Square, Circular and Elliptic Steel and Aluminum Tubes under Impact Loading
Impact Energy absorption Finite element method Axial crushing
2010/3/17
An Energy Absorption Comparison of Square, Circular and Elliptic Steel and Aluminum Tubes under Impact Loading.
A comparison of oxygen diffusion rates in sand moistened with water or peg 20000 solution
ODR PEG solutions water/sand/air mixtures
2008/11/26
Oxygen diffusion rates (ODR) were measured in water/sand/air and PEG solution/sand/air mixtures, spanning a range of liquid/solid/air volume ratios. Replacement of water with PEG solution as the liqu...
Comparison of three techniques to assess surface heterogeneityof solids in soils
surface heterogeneity soil energy distribution function
2008/11/24
Changes of surface adsorption energy distributions in soils can help to diagnose soil degradation. Techniques are needed to quantify the changes in the energy distributions. We used data on water vapo...
Comparison of tribolic properties of selected non metal materials suitable for production of the carirer plates for bulk conveyers(a short communication)
tribolic properties metal materials bulk conveyers
2008/11/24
The results of tribolic properties of non-metal materials hard wood (beech), Teflon, Werk-stoff'S", Alkamid are introduced in the study. The obtained experimental values reached on a tribometer with s...
Comparison of two- and three-electrode systems in measurements of potential oxygen flux density in soil*
soil aeration soil oxygen flux ODR OFD
2008/11/24
This paper presents a comparison of the results of potential flux of oxygen in soil, determined by the voltammetric method, OFD, with the use of a three-electrode set of electrodes in the system of po...
Comparison between apparent viscosity related to irradiation dose for corn starch and black pepper
irradiation viscometry dose-effect starch pepper
2008/11/21
Dose-effect relationship was studied in the rheoviscometric behaviour of geliffied suspensions of irradiated corn starch and black pepper, as the variation of the apparent viscosity and the shear stre...
Comparison between experimental and estimated crop evapotranspiration in Romania
reference evapotranspiration crop coefficients irrigation application
2008/11/21
The purpose of this paper is to compare experimental crop evapotranspiration (ETc-exp) obtained under irrigation conditions in fields versus estimated values of crop evapotranspiration (ETc-est) based...
Comparison of correlation models for the estimation of the water retention characteristics of soil
soil water retention correlation models
2008/11/21
This paper presents a comparison of three models for the estimation of soil water retention characteristics. They are based on the correlation between soil water content values at chosen values of so...
Comparison of correlation models for the estimation of the water retention characteristics of soil
soil water retention correlation models
2008/11/21
This paper presents a comparison of three models for the estimation of soil water retention characteristics. They are based on the correlation between soil water content values at chosen values of so...
Comparison of daily evapotranspiration rates obtained from water balance model and modified Bowen`s ratio method
evapotranspiration modelling Bowen`s ratio method
2008/11/21
The processes of energy and water exchange between the earth surface and atmosphere have a very significant influence on the microclimatic conditions and consequently, on plant production. Evapotransp...
Comparison of deep seepage estimations of a virtual with a real lysimeter by means of TDR-measurements
deep seepage TDR measurements lysimeter unsaturated hydraulic conductivity
2008/11/21
The virtual lysimeter concept was tested in comparison with a real lysimeter and found to be suitable for quantifying effective deep seepage dynamics in sandy soils. Discharge measurements and calcula...
Comparison of endosperm microstructure of wheat and durum wheat using digital image analysis
digital image analysis hardness fracture resistance endosperm microstructure wheat
2008/11/21
Six wheat varieties were analysed to quantify the relationship between the microstructure and hardness of endosperm. The microstructure of endosperms was characterized using scanning electron microsco...
Comparison of loads on smooth and corrugated-wall model grain bins
wheat bins silos loads friction
2008/11/21
Wall and floor loads exerted by wheat on a corrugated-wall model bin were measured. The 7.3 m high bin with a diameter of 2.44 m was centrally filled with wheat. Tests were conducted for a filling he...
Comparison of magness-taylor抯 pressure test with mechanical, non-destructive methods of apple and pear firmness measurements
apples pears firmness measurement non-destructive mechanical methods
2008/11/21
0.890) between MT x F methods was observed for the pears with firmness below 20 N (measured by MT method). It may be concluded that the measurement method for the coefficient of elasticity using the F...
Comparison of Open-Ended Coax and TDR sensors for the measurement of soil dielectric permittivity in microwave frequencies
TDR Open-Ended Coax sensor soil permittivity
2008/11/21
The study presents a comparison of two sensors for the determination of the complex permittivity of soil: a three- rod TDR probe and an Open-Ended Coax probe. The measurements were performed using a T...