scholarly journals Patterns of coloring with ionic dyes of the base glass matrix and enamel coatings in the system R2O–ВаО–ZnO–Al2O3–В2О3–TiO2–SiO2

2021 ◽  
pp. 105-110
Author(s):  
O. Ryzhova ◽  
◽  
N. Ilchenko ◽  
T. Nagorna ◽  
S. Naumenko ◽  
...  
Keyword(s):  
Computer Program ◽  
Glass Matrix ◽  
Lead Free ◽  
Color Glass ◽  
Color Intensity ◽  
Color Tone ◽  
Base Glass ◽  
Special Computer Program ◽  
Free Glass

The paper presents the study on the identification of patterns of coloring of a basic glass matrix and enamel coatings based on it in the system R2O–ВаО–ZnO–Al2O3–В2О3–TiO2–SiO2 by a number of ionic dyes. Regardless of the dye content, ionic dyes give the same color tone to both glasses and coatings based on these glasses as follows: CuO (1.0–3.0 wt.%) =489–494 nm (blue-green), Fe2O3 (0.5–2.0 wt.%) =575–585 nm (yellow), K2Cr2O7 (0.5–2.0 wt.%) =570–576 nm (yellow-green), CoO (0.5–1.0 wt.%) =441–463 nm (blue-violet), and NiO (0.5–1.0 wt.%) glass=559'–571' nm, coatings=598–629 nm (brown). It is shown that according to the degree of color intensity of glasses and coatings based on them, the dyes are arranged in the following sequence: CoO>NiO>CuO>K2Cr2O7>Fe2O3.. The research was conducted using a special computer program COLOR GLASS. The established patterns are used in the development of lead-free glass enamels for jewelry and decorative products.

Evaluation of Glass Frits for Development of Lead-Free Thick Film Resistor

2010 ◽  
Vol 2010 (1) ◽  
pp. 000752-000759
Author(s):  
Xudong Chen ◽  
W. Kinzy Jones
Keyword(s):  
Electrical Properties ◽  
Temperature Coefficient ◽  
Thick Film ◽  
Glass Frit ◽  
Lead Free ◽  
Temperature Coefficient Of Resistance ◽  
Film Resistor ◽  
Thick Film Resistor ◽  
Glass Compositions ◽  
Free Glass

Glass frit is a major component of thick film resistor (TFR) for the production of hybrid circuits. More than thirty commercial lead-free glass frits with different compositions have been evaluated for developing a lead-free thick film resistor that is compatible with typical industry thick film processing and has comparable electrical properties as the lead bearing counterpart. Two glass compositions were selected out of 33 candidates for preparation of RuO2 based TFR inks, which were screen printed on alumina substrates and fired at 850°C. The preliminary results of these resistors showed that the sheet resistance spanned from 400 ohms per square (Ω/□) to 0.4 mega-ohms per square (MΩ/□) with 5–15% RuO2 and the hot temperature coefficient of resistance (HTCR) fell in a range of ±350ppm/°C.

Properties of SnO-B2O3-SiO2 Lead-Free Glass Powder

2011 ◽  
Vol 412 ◽  
pp. 133-137 ◽  
Author(s):  
Hua Zhu ◽  
Guo You Gan ◽  
Ji Kang Yan ◽  
Jin Hong Du ◽  
Jian Hong Yi ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Heavy Metal ◽  
Differential Thermal Analysis ◽  
Glass Transition ◽  
Glass Powder ◽  
Lead Free ◽  
Prepared Glass ◽  
Excellent Chemical ◽  
Temperature Melting ◽  
Free Glass

SnO-B2O3-SiO2 glass powders, in which the different contents of SnO and B2O3 were 35% ~ 70%wt and 26% ~ 61% wt respectively, were prepared through high-temperature melting, water quenching and Ball milling. XRD showed that the performance of forming glass was very good and the range of extension was very wide. The effect of the contents of SnO and B2O3 on Tg, acidoresistant and density of prepared glass was studied. IR showed that it generates the heavy metal oxide generated glass. The density of glass powder decrease with increase of B2O3 content, but increase with increasing SnO content. SnO-B2O3-SiO2 glass had excellent chemical stability. Differential thermal analysis (DTA) shown that, with increasing SnO content, glass transition temperature first lower and then decreased.

New interdigital design for large area dye solar modules using a lead-free glass frit sealing

2006 ◽  
Vol 14 (8) ◽  
pp. 697-709 ◽  
Author(s):  
R. Sastrawan ◽  
J. Beier ◽  
U. Belledin ◽  
S. Hemming ◽  
A. Hinsch ◽  
...  
Keyword(s):  
Glass Frit ◽  
Lead Free ◽  
Large Area ◽  
Free Glass

Didactic Complexity Evaluation of Theorems Proofs of the School Geometry Course

2020 ◽  
Vol 8 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Robert Mayer
Keyword(s):  
Computer Program ◽  
Semantic Information ◽  
Logical Reasoning ◽  
Paired Comparisons ◽  
School Geometry ◽  
Semantic Complexity ◽  
Special Computer Program ◽  
Method Of Paired Comparisons ◽  
Logical Links

In the study of geometry, the student’s assimilation of the reasonings carried out in the theorems proofs has great importance. The diffi culty of understanding reasonings depends on the number of logical links, terms diversity and semantic complexity of mathematical statements. The article proposes the method for determining the didactic complexity of the theorems proofs and the results of its application. The essence of the method consists in “measuring” the amount of semantic information in theorem formulation, picture, reasonings and multiplication of the received volume with the diversity indicator of the terms used. For this, the theorem statement, the picture and the actual proof should be presented in text form, and the resulting file should be analyzed using a special computer program which calculates the number of diff erent terms in this text, takes into account their complexity, and fi nds the diversity indicator. The expert estimates complexity of terms by counting the words included in its defi nition and by the method of paired comparisons. An assessment of 12 frequently used theorems was carried out; this allowed them to be ordered by complexity. For each theorem the proof volume, the total amount of semantic information in it, the terms diversity indicator, the logical reasoning number, the information folding coeffi cient and the didactic complexity were determined.

scholarly journals Evaluation of the incandescent lamp sealing made of lead free glass

2000 ◽  
Vol 84 (Appendix) ◽  
pp. 42-42
Author(s):  
Tomoko Atagi ◽  
Shigekazu Nakagawa ◽  
Yasuhiro Ikai
Keyword(s):  
Incandescent Lamp ◽  
Lead Free ◽  
Free Glass

scholarly journals SELF-EQUALITY AS A STRATEGY OF SPONTANEOUS TEXT GENERATION

2017 ◽  
pp. 184-190
Author(s):  
G. G. Moskaltchuk
Keyword(s):  
Computer Program ◽  
Human Life ◽  
The Self ◽  
Thought Processes ◽  
Text Generation ◽  
Textual Information ◽  
Finite Integral ◽  
Special Computer Program ◽  
Text Formation ◽  
Spontaneous Reaction

The article deals with the results of the psycholinguistic experiment which prove the influence of the self-equality strategy in the process of spontaneous reaction text generation as a reaction on the stimulus “human life”. The materials have been analyzed with the help of a special computer program which marks the reaction texts parameters: text size in words (from space to space) and in sentences as well as the text formula reflecting the finite integral state of the whole. It has been found out that the self-equality as the principle of structuring speech forming activity is also used when producing reaction texts. The form reflects the hidden laws of the text synergetics and its synchronization with the speech-thought processes of the human acting with lack of time, it shows the hidden laws of the text formation. The probability of the realization of the 7 dominant models of the text form in the experiment is 824 texts of 1 thousand, in the directed one – 705 texts. The text formats reflect the discretization of the inner textual information. The average text size in the free experiment is 27.82 words, in sentences – 2.64, in the directed experiment – 12.34 and 6.79 sentences correspondingly. The reaction texts set on one page are formed by the tested according to a selected pattern and have hardly any stylistic, graphic and punctuation difference. The forms generated in the process of experiment are more end-oriented with attractors located in the end alongside with the dominant sense.

scholarly journals Aerodynamics of guyed masts

2007 ◽  
Vol 1 (1) ◽  
pp. 103-118
Author(s):  
Jarosław Bęc
Keyword(s):  
Computer Program ◽  
Computational Model ◽  
Thermal Action ◽  
Mode Shapes ◽  
Wind Action ◽  
Ice Load ◽  
Eurocode 3 ◽  
Nodal Displacements ◽  
Special Computer Program ◽  
Selection Of

Guyed masts response to wind action, ice load and thermal action has been analysed in this paper. Computational model of wind action based on quasi-steady theory has been applied. It has been assumed that nodal displacements may be expressed as a linear combination of representative mode shapes. Special computer program has been made to allow analysis of such structures. It has been found that the selection of representative mode shapes is very influential on the calculations outcome. The obtained results have been compared with the ones calculated according to patch loads method presented in Eurocode 3. The dynamic part of forces calculated with own method are about half of the ones coming from the standard.

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