搜索结果: 1-12 共查到“农业生物物理学 stress”相关记录12条 . 查询时间(0.093 秒)
Changes in the surface properties of the young sieve rootsafter 24h aluminium stress
roots aluminium stress surface properties
2008/11/24
Adsorption and variable surface charge of young sieve roots of triticale and wheat after 24 h aluminium stress were studied using water vapour adsorption isotherms and potentiometric titration data. R...
Compression of berry-like cell between two plates - role of internal stress
berry-like cell compression iiiLmal stress
2008/11/24
A simple model describing the compression of a round object covered by a membrane and filled to different levels with a liquid (berry-like cell), has been proposed. The radius of contact area is appro...
Effect of Pb-stress on selected physicochemical surface properties of barley (Hordeum vulgare L.) roots
apparent surface area CEC lead roots surface charge dissociation constants
2008/11/20
The objective of this research was to study the roots spring barley of the Ukrainian Peyas variety. The plants grew in a nutrient solution at pH 7, with a 16/8 h (day/night) diurnal light cycle and at...
Effect of stress on stereological parameters of polished sections of soil samples*
stereology image analysis histogram grain size distribution soil aggregate
2008/11/20
Subjecting soil to uniaxial stress causes its compaction and, at the same time, a change in its structure. So, it is important to find methods allowing to estimate such changes. The present study prop...
Evaluation for soil of crack net connectedness and critical stress-intensity factor
soil mechanics clods cracking strength scale effect
2008/11/19
Based on data reflecting size effect of soil clod strength, and on theoretical computation of clod strength, an approach was suggested for evaluation of crack net connectedness and critical stress-in...
Influence of water stress on growth, essential oil, and chemical compositionof herbs (Ocimum sp.)
Ocimum sp. water stress vegetative growth
2008/11/18
This work investigates the influence of water
stress on vegetative growth, essential oil, proline, total carbohydrates,
N, P, K, and protein contents of two species of an herb
plant ie Ocimum basil...
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...
Influence of moisture content on the stress relaxation response of amaranth seeds
amaranth stress relaxation visco- elasticity
2008/11/14
In the present study relaxation test was used to evaluate the influence of moisture content of amaranth seeds on their mechanical parameters. The first approximation was to assumed linear viscoelastic...
Prediction of apple bruising based on the instantaneous impact shear stress and energy absorbed
apple instantaneous impact shear stress instantaneous energy absorbed
2008/11/13
Instantaneous impact shear stress together with the instantaneous energy absorbed were used to predict bruise volume in Golden Delicious apple. The prediction produced a linear relation between the pr...
Prediction of apple bruising based on the instantaneous impact shear stress and energy absorbed
apple instantaneous impact shear stress instantaneous energy absorbed predicted bruise volume measured bruise volume
2008/11/13
Instantaneous impact shear stress together with the instantaneous energy absorbed were used to predict bruise volume in Golden Delicious apple. The prediction produced a linear relation between the pr...
Soil stress state determination under static load
wheel-soil interaction soil compaction soil stress state
2008/11/11
Intensification of crop production by uncontrolled increasing use of agricultural machinery negatively affects soil physical properties. Heavy machinery traffic causes soil compaction, erosion and phy...
A method was developed and a device constructed to measure the force of internal friction of granular materials. The angle of internal friction of wheat grain was determined for two displacement speed...