Glass Micro Balls Based on Glass Domestic Waste for Road Construction

2021 ◽  
Vol 1017 ◽  
pp. 111-121
Author(s):  
V.S. Bessmertniy ◽  
V.A. Klimenko ◽  
M.A. Bondarenko ◽  
A.V. Olisov ◽  
L.L. Bragina
Keyword(s):  
Road Construction ◽  
Spherical Shape ◽  
High Plasma ◽  
Alkali Resistance ◽  
Domestic Waste ◽  
Temperature Plasma ◽  
Plasma Burner ◽  
Amorphous Glass ◽  
Produce Glass ◽  
Road Marking

The glass micro balls based on glass domestic waste for road construction were obtained. Glass micro balls will reduce the contamination of road marking and increase its light-reflective ability at night. Colorless and colored container glass, as well as lead crystal, was chosen as the starting material for producing glass micro balls. An electric arc plasmotron UPU-8M was used to produce glass micro balls. Pre-crushed fractionated glass together with plasma-forming gas – argon was fed to the powder feeder and from the feeder to the plasma burner. Under the influence of high plasma temperatures, about 9000-12000K, the particles were melted, followed by cooling in the outgoing flow of plasma-forming gases. Due to high-temperature plasma exposure, partial evaporation of alkaline oxides and lead oxide occurred. Glass micro balls were enriched with the oxides of silicon, aluminum and calcium. This helped to increase the acid and alkali resistance of glass micro balls. The micro hardness, density, and refractive index of glass micro balls were studied. It is shown that glass micro balls have an ideal spherical shape and are x-ray amorphous. Glass micro balls are recommended for use in road construction as a reflective element of road marking.

Effects of O2 addition on the plasma uniformity and reactivity of Ar DBD excited by ns pulsed and AC power supplies

2021 ◽  
Author(s):  
Feng Liu ◽  
Yue Zhuang ◽  
Yulei Zhao ◽  
Jie Chen ◽  
Zhi Fang
Keyword(s):  
Chemical Reactivity ◽  
Negative Ions ◽  
Optical Emission ◽  
High Plasma ◽  
Dielectric Barrier Discharges ◽  
Temperature Plasma ◽  
Operation Conditions ◽  
Ac Power ◽  
Ozone Synthesis ◽  
Barrier Discharges

Abstract Dielectric barrier discharges (DBDs) have been widely used in ozone synthesis, materials surface treatment, and plasma medicine for their advantages of uniform discharge in atmospheric pressure and high plasma-chemical reactivity. To further improve the plasma treatment efficiency and activity, a small amount of admixture can be introduced into working gases (usually Ar, He, N2), while it can affect plasma uniformity significantly. In this paper, oxygen is added into Ar nanosecond (ns) pulsed and AC DBDs DBD and the effect of the added oxygen on the uniformity and reactivity have been investigated with optical and electrical methods. The plasma uniformity is quantitatively analyzed by Gray Value Standard Deviation (GVSD) of discharge images. The optical emission spectroscopy (OES) measurement of the emission lines with different energy thresholds can reveal the tendency of T e under different operation conditions. The n e are estimated from the electrical analysis. It is found that the ns pulsed DBD shows a much better uniformity than AC DBD. With the addition of O2, the uniformity of ns-pulsed Ar DBD gets worse for the O2- negative ions by the attachment of electron on O2 distorts the space electric field and promotes the filamentary formation. While, in AC Ar DBD, the added O2 can reduce the n e and brightness of filaments, which enhances the plasma uniformity. Overdose O2 molecules cause drops of n e and T e to plasma extinction. The results can help to realize the establishment of the reactive and uniform atmospheric low temperature plasma sources.

scholarly journals A Study of State Parameters for Road Construction of MSWI Bottom Ash

2021 ◽  
Vol 11 (5) ◽  
pp. 7624-7627
Author(s):  
T. K. V. Nguyen ◽  
T. T. H. Doan ◽  
T. H. Cao ◽  
H. S. Pham
Keyword(s):  
Granular Materials ◽  
Bottom Ash ◽  
Road Construction ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Domestic Waste ◽  
The North ◽  
Mswi Bottom Ash ◽  
Technical Guide ◽  
By Products

The current work tries to valorize the bottom ash from Municipal Solid Waste Incineration (MSWI). The bottom ash from waste incineration consists of atypical granular materials. They are industrial by-products resulting from the incineration of domestic waste and the way of the considered valorization is road gravel. In this paper, we present the state parameters of bottom ash taken from a recycling company in the North of France. These features can help us evaluate our bottom ash according to the technical guide of realization of embankments and subgrades.

scholarly journals Solution to the problems of complex use of mineral raw materials

2021 ◽  
Vol 885 (1) ◽  
pp. 012063
Author(s):  
L I Khudyakova ◽  
S L Buyantuev ◽  
V T Buyantuev
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Control Sample ◽  
Environmental Safety ◽  
High Heat ◽  
Alkali Resistance ◽  
Technological Parameters ◽  
Basalt Fibre ◽  
Temperature Plasma ◽  
Mineral Raw Materials

Abstract The increasing pace of construction in areas in eastern Russia is leading to an increased demand for building materials. To meet this demand, local raw materials, including basalt, are widely used. In this article, we have shown the possibility of complex use of basalts in the production of various types of products. Using low-temperature plasma, basalt fibre with good physical and chemical characteristics was obtained. It possesses high heat-resistance (up to 700°C) and alkali resistance, and is stable in aqueous medium. Using mechanical activation method composite binding materials were obtained. Technological parameters of their production are determined. It is shown that the binding materials with optimal composition have a compressive strength higher than the strength of the control sample by 18%. The integrated use of mineral raw materials allows us to solve the issues of energy efficiency, resource conservation and environmental safety in the development of mineral deposits and the production of new types of products.

scholarly journals Beading Mechanism and Performance of Porous Steel Slag Microbead Abrasive

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1377
Author(s):  
Jingjing Pei ◽  
Yuzhu Zhang ◽  
Hongwei Xing ◽  
Qianqian Ren ◽  
Wenqing Huo ◽  
...  
Keyword(s):  
Pore Structure ◽  
Copper Alloys ◽  
Steel Slag ◽  
Spherical Shape ◽  
Fractal Model ◽  
Alkali Resistance ◽  
Forming Mechanism ◽  
Hard Shell ◽  
Gas Quenching ◽  
And Performance

The use of the gas-quenching process for preparing porous bead slag abrasive was investigated in this paper. An X-ray diffractometer, field emission scanning electron microscope, mercury intrusion porosimetry, and stereo microscope were used to analyze the microbead forming mechanism, pore structure, acid–alkali resistance, and polishing properties of porous steel slag microbead abrasives. Results show that the porous steel slag abrasives present a mono-disperse spherical shape with a hard shell and the porosity is 42.36%. The thermodynamic fractal model indicates that the fractal dimension of the abrasive is 2.226, which shows its simple pore structure. The sample has better chemical stability in the polishing fluid than in water, acid, and alkali solution. Therefore, aluminum and copper alloys are used as substrates for polishing tests. The results indicate that the abrasives could effectively improve the quality of the workpiece surface and the polishing efficiency for aluminum alloy was higher than that for copper alloy.

Macrostructure and microphysics of Saturn's E-ring

1984 ◽  
Vol 75 ◽  
pp. 607-613 ◽  
Author(s):  
Kevin D. Pang ◽  
Charles C. Voge ◽  
Jack W. Rhoads
Keyword(s):  
Size Distribution ◽  
Spherical Shape ◽  
Mie Scattering ◽  
Narrow Size Distribution ◽  
Electrostatic Levitation ◽  
Volcanic Origin ◽  
Micron Diameter

Abstract.All observed optical and infrared properties of Saturn's E-ring can be explained in terms of Mie scattering by a narrow size distribution of ice spheres of 2 - 2.5 micron diameter. The spherical shape of the ring particles and their narrow size distribution imply a molten (possibly volcanic) origin on Enceladus. The E-ring consists of many layers, possibly stratified by electrostatic levitation.

On the Shape of Field-Ion Emitters

1976 ◽  
Vol 34 ◽  
pp. 520-521
Author(s):  
H.C. Eaton ◽  
B.N. Ranganathan ◽  
T.W. Burwinkle ◽  
R. J. Bayuzick ◽  
J.J. Hren
Keyword(s):  
Grain Boundary ◽  
Spherical Shape ◽  
Theoretical Strength ◽  
Evaporation Process ◽  
Field Evaporation ◽  
Geometric Information ◽  
Field Ion Microscopy ◽  
Considerable Error ◽  
True Shape ◽  
Ion Microscopy

The shape of the emitter is of cardinal importance to field-ion microscopy. First, the field evaporation process itself is closely related to the initial tip shape. Secondly, the imaging stress, which is near the theoretical strength of the material and intrinsic to the imaging process, cannot be characterized without knowledge of the emitter shape. Finally, the problem of obtaining quantitative geometric information from the micrograph cannot be solved without knowing the shape. Previously published grain-boundary topographies were obtained employing an assumption of a spherical shape (1). The present investigation shows that the true shape deviates as much as 100 Å from sphericity and boundary reconstructions contain considerable error as a result.Our present procedures for obtaining tip shape may be summarized as follows. An empirical projection, D=f(θ), is obtained by digitizing the positions of poles on a field-ion micrograph.

Author response for "Daratumumab for Relapsed or Refractory AL Amyloidosis with high Plasma Cell Burden"

2019 ◽  
Author(s):  
Rahel Schwotzer ◽  
Markus Gabriel Manz ◽  
Stefanie Pederiva ◽  
Christine Waibel ◽  
Clemens Caspar ◽  
...  
Keyword(s):  
Plasma Cell ◽  
High Plasma ◽  
Author Response ◽  
Al Amyloidosis

Creep-induced anisotropy in amorphous glass-covered wires

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-195-Pr2-198
Author(s):  
H. Chiriac ◽  
T.-A. Óvári ◽  
L. Kraus ◽  
F. Barariu
Keyword(s):  
Induced Anisotropy ◽  
Amorphous Glass

Relation between Plasminogen Activator Inhibitor-1 and Hepatic Enzyme Concentrations in Hyperlipidemic Patients

1994 ◽  
Vol 72 (03) ◽  
pp. 434-437 ◽  
Author(s):  
E Bruckert ◽  
A Ankri ◽  
P Glral ◽  
G Turpin
Keyword(s):  
Blood Pressure ◽  
Plasminogen Activator ◽  
Plasminogen Activator Inhibitor ◽  
Tolerance Test ◽  
High Plasma ◽  
Oral Glucose ◽  
Plasminogen Activator Inhibitor 1 ◽  
Glutamyl Transferase ◽  
Activator Inhibitor ◽  
Pai 1

SummaryPlasminogen activator inhibitor type-1 (PAI-1) is a key determinant of the fibrinolytic capacity. Its activity correlates with most of the characteristic features of insulin resistance syndrome, i. e. obesity, high blood pressure and hyperlipidemia.We measured plasma PAI-1 antigen levels in 131 asymptomatic men (aged 44.2 ± 11 years) who had been referred for hyperlipidemia. Those taking medication and those with a secondary hyperlipidemia were excluded.We confirmed the correlation between PAI-1 levels and the following variables: body mass index, blood pressure, triglyceride concentration, and blood glucose and insulin levels before and after an oral glucose tolerance test. We also found a significant and independent correlation between PAI-1 and the concentration of the hepatic enzymes glutamyl transferase, alanine aminotransferase and aspartate aminotransferase.Mild liver abnormalities (presumably steatosis) may thus be one of the factors accounting for high plasma PAI-1 levels in hyperlipidemic patients.

Respective Roles of Antithrombin III and Alpha 2 Macroglobulin in Thrombin Inactivation

1981 ◽  
Vol 45 (01) ◽  
pp. 051-054 ◽  
Author(s):  
A M Fischer ◽  
J Tapon-Bretaudiere ◽  
A Bros ◽  
F Josso
Keyword(s):  
Antithrombin Iii ◽  
Practical Interest ◽  
High Plasma ◽  
At Iii ◽  
Human Material ◽  
Cofactor Activity

SummaryIn order to investigate the mechanism of thrombin inactivation in the presence of both antithrombin III (AT III) and α 2-macroglobulin (α 2 M), thrombin and the inhibitors have been purified from human material and thrombin inactivation studied using purified reagents either alone or added to defibrinated plasma. Comparison of clotting and amidolytic activities of residual thrombin allowed to measure the amount of thrombin bound to α 2 M. In a purified reagent system as well as in plasma, part of exogenous thrombin is bound to α 2 M. The amount of bound thrombin is related to α 2 M concentration. Conversely, previous plasma α 2 M depletion by immunoabsorption increases the consumption of heparin-cofactor activity by exogenous thrombin. Thus AT III and α 2 M compete for thrombin inactivation. This finding could be of practical interest in clinical situations associating high plasma α 2 M levels and a decrease of AT III concentration.

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