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Grain sorghum is a kind of crop that has been planted widely in China and even in the world.
Materials and methods Modification of grain sorghum stalk The grain sorghum stalk was collected from a local farm.
The grain sorghum stalk was modified following the method of Li et al [13].
Langmuir isotherm model assumes monolayer adsorption on a surface with a finite number of identical sites.
As the increasing of pH, the number of positively charged sites decreased and the number of negatively charged sites increased, which favors the removal of the cationic dye.

Rods were subjected to ECAP using a die with a channel-intersection angle of F = 110° at a temperature of 400°C with the number of passes amounting to 8.
Ultra fine-grained (UFG) – ECAP; 3.
Annealing for 1, 10 and 100 hours results in the increase in the number of peaks at cooling and heating which attests to a multi-stage transformation in these states.
Due to this, no new peaks are formed during annealing of UFG and NC states at 400°С for a period from 1 to 100 hours and the number of MT steps remains the same.
The temperature is 40°С, number of cycles 20. a) CG state, b) after ECAP, c) after HPT and annealing 400°C, 1 hour Thus, grain refinement of Ni50.7Ti49.3 alloy with application of SPD techniques results in emergence of the pseudoelastic effect at a temperature close to that of a human body.

As the power increased, the size of the nano silver grains increased and the number of grains decreased.
It is apparent that the silver films were composed of compact nano size grains, and the surface shape of the grains varied with the power.
As sputtering power increased, the size of the nano silver grains increased and the number of grains decreased.
As sputtering power increased, some nano grains aggregated to form larger islands, thus the number of the grains appeared to be smaller and their diameter larger.
We measured the number of Staphylococcus aureus bacteria of samples at dilution ratios 10 -1, 10-2 and 10-3.

In order to distinguish resin-bonded diamond grinding wheels with metal-bonded diamond grinding wheels, the prefix R and M are added respectively before the corresponding numbers of grain size, such as R100 represents a resin-bonded diamond grinding wheel of size number 100, and MW10 represents a metal-bonded diamond grinding wheel of size number W10; dressing methods are elliptical ultrasonic vibration dressing, longitudinal ultrasonic vibration dressing and ordinary dressing, respectively represented by ED, LD and TD.
It can be found that there are potholes coming from the shedding of abrasive grains on the surface of diamond grinding wheel surface with the observation under microscope, and the bonding agent, particularly bronze, is squeezed flat, overlaying most of diamond abrasive grains, and the protrusion height of diamond abrasive grains over binding agent in low and the number is limited, and dressing must be done on those wheels.
Figure 4b shows the broken condition of abrasive grains dressed by diamond stylus, and due to it is sharper than GC abrasive grains, part of the diamond abrasive grains are locally broken by impact crushing.
The wear mechanism of abrasive grains on grinding wheel can often be attributed to the following three forms of grain wear, crushing and shedding.
The less shedding of abrasive grains dressed by the two dressing methods demonstrates the strong holding capacity between bronze bonding agent and abrasive grains.

In order to clarify the difference between the grain boundaries in ARB-Cu and equilibrium boundaries, calculated atomic structure of symmetric tilt grain boundaries with <110> common axis (<110> symmetric tilt grain boundary; <110> STGB) in Cu were used.
Therefore, it is expected that the mechanical properties of the ARB processed material having numerous number of grain boundaries are governed by the atomic structure of the boundaries.
However, the atomic structure of the grain boundaries in the ultrafine grained materials fabricated by the SPD has been rarely studied.
Furthermore, in order to compare the grain boundaries in the ARB-Cu with equilibrium grain boundaries, the MD simulated grain boundary structures of copper [4] were used.
The misorientation angle between adjacent grains was about 14˚.

Microdiffraction patterns taken from the area about 2 µm2 demonstrated a number of grains separated by high-angle grain boundaries.
The resulting grain structure can be effective obstacle for the development of grain boundary sliding.
It is clear that the large grains forming during superplasticity result in more difficult accommodation of grain boundary sliding by nucleation, slip and annihilation of dislocation on grain boundaries.
The revealed changes in phase composition of the alloy can also lead to enhancement of grain boundary mobility and acceleration of grain growth process that increases the grain boundary sliding resistance.
The changes in phase composition can also results in increase of grain boundary mobility and acceleration of grain growth.

Critical nanometer grain sizes and deformation mechanisms The nanometer area a grain size approaches to the thickness of grain-boundary layers.
The polycrystalline grains are numbered.
In grains 3 and 4, the dislocation sources are triple grain junctions, whereas in grain 2, these are steps in the boundary between grains 1 and 2.
In Table the critical intervals of grain sizes from nano to mezo grains.
The stages with even numbers (II, IV, VI) have a constant value Θ, the stages with odd numbers (III, V) have the value of Θ decreasing with deformation.

After acquisition of the temperature signal, it can be inputted into the microcontroller, and this should be obtained by giving corresponding software processing which derived from a large number of experimental data and the process of fitting. 2.5.
Resistive grain moisture content determination method[J].
Grain and oil processing and food machinery, 2005 ,2 : 66-69
A kind of sensor measuring grain moisture content [J].
Grain moisture measuring instrument based on capacitive sensor [J].

Equal-channel angular pressing (ECAP) is used to convert coarse grain into ultrafine grain (UFG).
It is clear that the grain structure is not homogeneous but a mixed one of coarse grains and relatively small grains.
It can be found that the microstructures after 4 passes in 100°, 110° and 120° die via route Bc still consist of a considerable number of large grains and an un-uniform grain structure.
Plot showing the effect of die angle on shear strain after different number of passes Indeed, the die angle has effect on the microstructure produced.
A large number of grains are initially in the so-called hard orientations with small Schmid factors and deformation is difficult in them.

However, as for the fine-grained cassiterite, flotation and joint processing techniques are generally selected to improve the low recovery from gravity separation.
According to the studies of a number of tin ore bodies, tin can be classified into three major groups [2]: Cassiterite contained in pegmatite veins contain significant quantities of (Nb,Ta)2O5 with traces of wolframite and manganese.
The commonly used beneficiation method for coarse-grained cassiterite is gravity separation and for fine-grained is flotation.
Carrier Flotation Carrier flotation is that floatable coarse mineral particles are added into the pulp as a carrier, fine-grained particles adhere to the carriers or fine-grained particles themselves flocculate together, then the coarse particles are collected out.
Conclusions Though various flotation regents can be used for cassiterite separation, a number of difficult problems still cannot be avoided due to bad selectivity, high cost of the reagents, low index and serious environment pollution.