scholarly journals HIGH-TEMPERATURE CONSOLIDATION AS A STRUCTURE CONTROL METHOD OF THE NANOPOROUS GLASSES

2021 ◽  
Vol 4 (11(75)) ◽  
pp. 68-70
Author(s):  
G. Shakhgildyan
Keyword(s):  
High Temperature ◽  
Composite Materials ◽  
Porous Glass ◽  
Main Parameter ◽  
Optical Materials ◽  
Control Method ◽  
Effect Of Temperature ◽  
Structure Control ◽  
Nanoporous Glass

Nanoporous glass is a matrix for composite optical materials, in which, by impregnating various activators, it is possible to initiate the appearance of properties that are uncharacteristic for the composite materials. In this case, the main parameter of the structure of nanoporous glass is porosity, which can be controlled by the method of high-temperature consolidation. In this work, we have studied the effect of temperature consolidation on the structure of porous glass.

scholarly journals STRUCTURAL FEATURES OF NANOPRISE GLASSES AFTER HIGH-TEMPERATURE SINTERING

2021 ◽  
Vol 7 (5(41)) ◽  
pp. 36-40
Author(s):  
Georgy Yurievich Shahgildyan
Keyword(s):  
High Temperature ◽  
Composite Materials ◽  
Porous Glass ◽  
Main Parameter ◽  
Optical Materials ◽  
Structural Features ◽  
Nanoporous Glass ◽  
Thermal Sintering

Nanoporous glass is a matrix for composite optical materials, in which, by impregnating various activators, it is possible to initiate the appearance of properties uncharacteristic of composite materials. In this case, the main parameter of the structure of nanoporous glass is porosity, which can be controlled by the method of hightemperature sintering. In this work, we have studied the effect of thermal sintering on the structure of porous glass.

High-Temperature Closure Control Technology of Concrete Arch Bridge Using Cable-Stayed Buckle and Cantilever Construction Method

2014 ◽  
Vol 638-640 ◽  
pp. 1032-1037
Author(s):  
Zhong Chu Tian ◽  
Wen Ping Peng ◽  
Chao Zhou
Keyword(s):  
High Temperature ◽  
Control Method ◽  
Least Square Method ◽  
Least Square ◽  
Effect Of Temperature ◽  
Arch Bridge ◽  
Status Effect ◽  
Cantilever Construction ◽  
Jacking Force ◽  
The Impact

The problem of high temperature closure of concrete arch bridge using cable-stayed buckle and cantilever method was resolved by pre-jacking force and counterweight in the arch rib closure port. The arch closure status effect of temperature difference was error array, the unit pre-jacking force and unit counterweight were impact parameter array. The impact matrix was the arch closure status effect of unit pre-jacking force or unit counterweight. The matrix equation was established on the error and the impact of parameters. Then, the pre-jacking force and additional counterweight value were solved by the least square method. Finally, the control method was verified by the calculation and analysis of Mupeng bridge. It was applied to achieve the closure of arch bridge using cable-stayed buckle and cantilever in any high temperature conditions.

scholarly journals High-Temperature Synthesis of Metal–Matrix Composites (Ni-Ti)-TiB2

2021 ◽  
Vol 11 (5) ◽  
pp. 2426
Author(s):  
Vladimir Promakhov ◽  
Alexey Matveev ◽  
Nikita Schulz ◽  
Mikhail Grigoriev ◽  
Andrey Olisov ◽  
...  
Keyword(s):  
High Temperature ◽  
Composite Materials ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Average Particle Size ◽  
Synthesis Process ◽  
Average Particle ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

Currently, metal–matrix composite materials are some of the most promising types of materials, and they combine the advantages of a metal matrix and reinforcing particles/fibres. Within the framework of this article, the high-temperature synthesis of metal–matrix composite materials based on the (Ni-Ti)-TiB2 system was studied. The selected approaches make it possible to obtain composite materials of various compositions without contamination and with a high degree of energy efficiency during production processes. Combustion processes in the samples of a 63.5 wt.% NiB + 36.5 wt.% Ti mixture and the phase composition and structure of the synthesis products were researched. It has been established that the synthesis process in the samples proceeds via the spin combustion mechanism. It has been shown that self-propagating high-temperature synthesis (SHS) powder particles have a composite structure and consist of a Ni-Ti matrix and TiB2 reinforcement inclusions that are uniformly distributed inside it. The inclusion size lies in the range between 0.1 and 4 µm, and the average particle size is 0.57 µm. The obtained metal-matrix composite materials can be used in additive manufacturing technologies as ligatures for heat-resistant alloys, as well as for the synthesis of composites using traditional methods of powder metallurgy.

scholarly journals The modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo, China

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Rui Zhang ◽  
Yujie Meng ◽  
Hejia Song ◽  
Ran Niu ◽  
Yu Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
High Temperature ◽  
Air Pollutants ◽  
Meteorological Data ◽  
Effect Of Temperature ◽  
Distributed Lag ◽  
Modification Effect ◽  
Incidence Risk ◽  
The Impact ◽  
The Relationship

Abstract Background Although exposure to air pollution has been linked to many health issues, few studies have quantified the modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo, China. Methods The data of daily incidence of influenza and the relevant meteorological data and air pollution data in Ningbo from 2014 to 2017 were retrieved. Low, medium and high temperature layers were stratified by the daily mean temperature with 25th and 75th percentiles. The potential modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo was investigated through analyzing the effects of air pollutants stratified by temperature stratum using distributed lag non-linear model (DLNM). Stratified analysis by sex and age were also conducted. Results Overall, a 10 μg/m3 increment of O3, PM2.5, PM10 and NO2 could increase the incidence risk of influenza with the cumulative relative risk of 1.028 (95% CI 1.007, 1.050), 1.061 (95% CI 1.004, 1.122), 1.043 (95% CI 1.003, 1.085), and 1.118 (95% CI 1.028, 1.216), respectively. Male and aged 7–17 years were more sensitive to air pollutants. Through the temperature stratification analysis, we found that temperature could modify the impacts of air pollution on daily incidence of influenza with high temperature exacerbating the impact of air pollutants. At high temperature layer, male and the groups aged 0–6 years and 18–64 years were more sensitive to air pollution. Conclusion Temperature modified the relationship between air pollution and daily incidence of influenza and high temperature would exacerbate the effects of air pollutants in Ningbo.

Effect of temperature on the microbial ecology of a hydrocarbon-contaminated Antarctic soil: Implications for high temperature remediation

2008 ◽  
Vol 53 (1) ◽  
pp. 115-129 ◽  
Author(s):  
Susan H. Ferguson ◽  
Shane M. Powell ◽  
Ian Snape ◽  
John A.E. Gibson ◽  
Peter D. Franzmann
Keyword(s):  
High Temperature ◽  
Microbial Ecology ◽  
Effect Of Temperature ◽  
Antarctic Soil

Research on Signal Timing Method of Intersection Based on RFID

2011 ◽  
Vol 84-85 ◽  
pp. 410-414
Author(s):  
Wei He ◽  
Jie Xiong
Keyword(s):  
Comparative Analysis ◽  
Radio Frequency Identification ◽  
Main Parameter ◽  
Control Method ◽  
Research Work ◽  
Signal Timing ◽  
Key Points ◽  
Frequency Identification ◽  
New Research ◽  
Radio Frequency Identification Devices

Based on the RFID (Radio Frequency Identification Devices), this paper presents new research work of signal timing intersection in the aspects of the key points of design, the main parameter and timing methods. Finally, the intersection of signal timing of fuzzy control method based on RFID is proposed through comparative analysis of the intersection of several traditional signal timing methods.

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