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The paper is devoted to research of influence of “MC-Bauchemie” additions on the fine-grained concrete properties, namely compressive strength.
The results of testing of fine-grained concrete made on the basis of two different natural sands are presented.
Introduction Fine-grained concrete is a special type of heavy concrete in the production of which does not use a coarse aggregate.
Fine-grained concrete has its own characteristics: - composition homogeneity allows to achieve the maximum stone density which means high strength of structures; - the absence of coarse parts of aggregate gives the mix high mobility allowing them to freely pour into hard-to-reach places, densely reinforced structures; - the presence of a certain number of pores has a positive effect on the heat preservation; - low cost of the material (and the combination of components, change of proportions allows to obtain different technical characteristics of concrete as a result).
It should be also noted that the production of high-quality concrete including fine-grained one is not possible without the using of chemical additions [1-3].

When brewing liquor, large amounts of distiller grains (DG) are left over, which are as the byproduct in liquor production.
They investigated the changes in crystallinity, crystallite size, grain size distribution and morphological features of the MCC particles.
distillers grains(DG)(×2000) distillers grains(DG) (×1000) DMCC (×2000) DMCC (×1000) LowaPH102 (×2000) LowaPH102 (×1000) Fig.1 SEM graphs of distillers grains (DG), DMCC and LowaPH102 However, the fibrillar structure of DG was destroyed and changed into small irregular particles during acid hydrolysis.
DMCC fibers were more distorted, consisted of a number of deposits on the surface of fibers and pores with different sizes.
In contrast the LowaPH102 had short rod-shaped particles which were formed by a number of swollen fibrils and appeared to be a dense network structure, which agrees with the data reported by Mohamed E[10].

Systematic Planning and Design of a System to Facilitate the Adjustment of Grain Transport Vanes in a Combine Harvester Marco A. de Carvalho*1,a, Felipe B.
The conceived system allowed a 80% reduction of time spent in grain transport vane adjustment.
If significant loss of grain in the rotor continues to occur, the angle of the transport vanes must be adjusted.
Regarding geometry, the intention was maintaining the maximum number of parts already present in the combine harvester, in order to facilitate the retrofitting of old machines.
The speed of the machine was considered, as well as the number of maize plants per linear meter, the number of ears per maize, the number of line units in the platform and the mass of the ear.

Precipitation of microalloy carbo-nitrides in austenite is used exclusively for ferrite grain refinement through an increase in the number density of nucleation sites for ferrite.
For the CR practice the increase in the number of nucleation sites results from the change in grain shape and the addition of active deformation bands and incoherent twin boundaries.
(a) (b) (c) 0 20 40 60 80 100 120400 500 600 700 800 Temperature, °C Number of grain boundary ferrite/100um or intragranular ferrite/100um 2 Intragranular ferrite Grain boundary ferrite acicular ferrite (d) Fig. 7.
Microstructure and number density of grain boundary ferrite and intragranular polygonal and acicular ferrite in 0.10%V steel isothermally transformed between 700-450°C prior to gas quenching to room temperature [13].
Quenching from 600°C produced a thin band of grain boundary ferrite and higher number of intragranulary nucleated polygonal ferrite crystals, Fig. 7(a).

This research follows in the experimental testing of connections loaded parallel to the grain.
The thickness of the annual rings and the angle of the grain were also measured.
element, gM is partial factor for material property (gM = 1,3 for solid wood) Conclusion As the number of samples is small, the presented results are prone to statistical error.
This is why a round timber carrying capacity in tension perpendicular to the grain is deciding for the round timber bolted joints carrying capacity perpendicular to the grain.
Acknowledgements This paper has been achieved with the financial support of the Ministry of Education, specifically by the Student Research Grant Competition of the Technical University of Ostrava under identification number SP2014/184.

Ultra Fine Grain via Friction Stir Processing of 7075-T6 Grade Aluminum Alloy M.
A number of studies, however, relate this process to the absorption of dislocations by substructure grain boundary [12,23].
Here the grains size dropped under 100 nm (between 0.35-0.6 µm).
Such a change lowered the grains size to less than 100 nm.
Lowe (Eds.), Ultrafine Grained Materials III, TMS (2004)

The number density of platelike particle was low and the surface of particles was curved.
The condition for the preferential growth of template grains at the expense of matrix grains was lost at this stage.
Template grains in Na-excess specimen (side view). they were formed from one BiT grains.
Therefore, the number density of platelike grains was low, resulting in the small degree of orientation in the sintered compacts.
In the Na-deficient specimen, on the other hand, the coalescence of small grains in the skeleton particles was not so extensive, resulting in a low number density of template particles and a small degree of orientation.

Thus the pinning role exerted by the precipitates on the boundary of the austenite grains is weakened or even lost, which results in the growth of the austenite grains to form a so-called coarse-grain zone.
When multi-pass welding is applied to pipeline steel, there exists the Unchanged Coarse-grain HAZ, the Critical reheated Coarse-grain HAZ and the Sub-critical reheated Coarse-grain HAZ in the HAZ.
Utilizing the non-metallic inclusions within the austenite grains, which can promote the nucleation of intra-granular ferrite and refine the grain size, has become an important method to improve the strength and toughness of the HAZ.
The present study focuses on the nucleation of intra-granular ferrite and its sympathetic nucleation in the HAZ of X80 pipeline steel, which can promote the refining of grain size in the coarse-grain zone.
Janke: Grain Refining of Structural Steels by Dispersion of Fine Oxide Particles.

Modifier and grain refiners are to be added to the molten Al-Si alloys to get combined grain refinement and modification effects.
In aluminium alloys, grain refining on efficient nuclei such as Al 3Ti, Al2 Sr3 particles is facilitated by the addition of grain refining master alloys.
Supersaturated levels of dispersoid forming elements in solid solution will increase the number of nucleation sites which form fine dispersoids during preheating of the cast alloy.
The grain size: 120µm to 180 µm.
Conclusions The addition of 0.30 wt% Mn, 0.15wt%Ti and 0.10 wt%Sr to grain refined aluminium alloy has a sensible effect on grain size.

Grain boundaries misorientation In Fig. 4, high angle grain boundaries (HAGB) (> 15º misorientation) and low angle grain boundaries (LAGB) (4 º < LAGBs < 15º) are depicted in red and green color, respectively.
Fig. 5 and Fig. 6 demonstrated that the distribution of grain boundary misorientation was affected by the processing temperatures and pass number (Fig. 7).
The yield stress (σy) increased with increasing the pass number in route A whereas it decreased with route Bc after four and six passes regardless of the processing temperatures (table 1).
The grain structure was more homogeneous at 473 K, and route Bc was the most effective for grain refinement.
The fraction of LAGBs decreased with increasing pass number in route A, and increased in route Bc, at 523 K.