搜索结果: 1-15 共查到“农业生物物理学 model”相关记录23条 . 查询时间(0.343 秒)
Model development of the external friction of granular vegetable materials on the basis of artificial neural networks
external friction granular vegetable materials feed-forward artificial neural network
2008/11/26
The aim of the research conducted was the creation of a model of the phenomenon of the external friction of vegetable materials using a feed-forward artificial neural network (ANN). The network was ta...
Model of CO emission level of exhaust gases in tractor engines fed with biofuels
fumes biofue rapeseed methy ester
2008/11/26
The article presents results of research on the
levels of emission of carbon monoxide (CO) in exhaust gases
emitted by the S-4002 engine of an agricultural tractor depending
on two variables: the h...
Model study of the effect of barley grain moisture content on the distribution of horizontal and vertical pressures in a silo
barley moisture content silo pressure
2008/11/26
This study presents the results of the measurements of horizontal and vertical pressures in a silo, performed for dry barley grain with a moisture content of 13% d.b. and compares those results with t...
Model study of the effect of barley grain moisture content on the distribution of horizontal and vertical pressures in a silo
barley moisture content silo pressure
2008/11/26
This study presents the results of the measurements of horizontal and vertical pressures in a silo, performed for dry barley grain with a moisture content of 13% d.b. and compares those results with t...
ACCESS-II: a detailed model for crop growth and water conditions
mode soil water use crop growth climate change
2008/11/26
ACCESS-II contains a detailed model of crop growth and soil water use, for use within small areas and with detailed soil and cropping data. The principles behind the detailed model are described. Vali...
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 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...
Effects of grain properties on loads in model silo
grain silo mechanical properties silo loads
2008/11/19
This work addresses the variation in wall loads in thin, smooth walled, flat floor metal silos caused by the variation in the mechanical properties of the grain bedding and friction forces acting on t...
Evaluation of soil physical condition with the use of ceres model, permeameter and infiltrometer methods
soil physical conditions CERES model penetrometer infiltrometer
2008/11/19
The following sites were investigated: Tisice (district Melnik, central Bohemia): An irrigation and agronomic experiment station of which some archive data were used as inputs to (and to test the outp...
Grain pressure in a model silo as affectedby moisture content increase
grain silo pressure swelling
2008/11/18
Swelling pressure of wetted grain was measured in a model silo. Experimental set was designed to simulate the conditions under which grain is subjected to wetting by ambient air of the humidity highe...
Response of spring barley to changes of compaction and aeration of sandy soilunder model conditions
soil bulk density oxygen diffusion rate (ODR) root growth yield spring barley
2008/11/18
The response of grain yield and root growth of spring barley to changes of compaction and aeration of a sandy soil was studied under model conditions. The experiment was done using plots of 1 m x 1 m....
Improved rate controlled model for stress relaxation in vegetable tissue
potato tuber stress relaxation model thermal activation stress pre-strain sigmoid f-function
2008/11/14
Stress relaxation in two varieties of potato tubers was studied with the aim of proposing a more suitable rate control model (RCM) for description of the relaxation process in vegetable tissue. This m...
Limited entrapment model to simulate the breakthrough of Arthrobacter and Aquaspirillum in soil columns
limited entrapment model simulation bacterial transport soil columns
2008/11/14
Bacterial transport through soils is attracting more attention because soil serves as an environmental bacterial filter, thereby reducing microbial contamination of ground water. We conducted a series...
Performance of earth pressure cell as grain pressure transducer in a model silo
bulk solids granular material pressure ratio pressure cell silo loads
2008/11/14
Numerous methods have been proposed for determining the pressure exerted by grain at discrete locations in a storage structure, but few satisfactory solutions have been found. Earth pressure cells wer...
Physical model for movement of water in split-root wheat plants
Darcy's law Ohm's-law analogue split-roots wheat
2008/11/14
Roots can be split between soil and nutrient solution to determine the effect of soil matric potential on water relations. When such experiments are done with wheat, water from the nutrient solution s...
