Progress on Mg2Si Thermoelectric Materials

2014 ◽  
Vol 886 ◽  
pp. 71-74 ◽  
Author(s):  
Xiao Dong Luo ◽  
Hao Liu ◽  
Wen Lin Xu ◽  
Yong Xiang Zhu
Keyword(s):  
Thermoelectric Materials ◽  
Potential Application ◽  
Research Progress ◽  
Preparation Technique ◽  
Thermoelectric Devices ◽  
Existing Problems ◽  
Basic Performance ◽  
The Future

Mg2Si which is composed of less toxic and naturally abundant elements,has attracted more attention for its potential application to thermoelectric devices. In this paper, the basic performance and preparation technique of Mg2Si thermoelectric materials are introduced. reviewed the current research progress of Mg2Si thermoelectricity. And the paper points out the existing problems and the trend of study in the future.

scholarly journals Review on the application of freeway CVIS communication technology

2020 ◽  
Vol 325 ◽  
pp. 01006
Author(s):  
Shouyan Fu ◽  
Wenhong L ◽  
Jiali Ge ◽  
Yanxi Qu
Keyword(s):  
Wireless Network ◽  
Communication Technology ◽  
Channel Coding ◽  
Road Traffic ◽  
Research Progress ◽  
Technology Application ◽  
Existing Problems ◽  
Network Intrusion ◽  
The Future ◽  
Application Requirements

This paper mainly describes the research progress of Cooperative Vehicle Infrastructure System (CVIS) communication technology in freeway. The application status of short-range real-time communication technology and intermediate-range interactive communication technology in different scenarios of freeway CVIS are discussed respectively. This paper summarizes the existing problems in the research of CVIS communication technology from two aspects of technology application and network security. The research shows that in the future, machine learning, deep learning and other methods can be used to automatically detect network intrusion and deal with unknown attacks; In the future, the CVIS communication technology will adopt channel coding technology and encryption technology to improve the security of wireless network; With the development of 5G technology, the Internet of Vehicles(IOV) will usher in new opportunities. In the future, the freeway communication network will be a heterogeneous wireless network with multiple access networks, which can meet the application requirements in different road traffic scenarios, effectively promote the construction of freeway informatization and accelerate the construction process of smart freeway.

scholarly journals Research status and Prospect of integrated energy system collaborative control based on energy Internet

2021 ◽  
Vol 257 ◽  
pp. 02010
Author(s):  
Peng Ye ◽  
Keming Qu ◽  
Feng Sun ◽  
Mingli Zhang ◽  
Na Zhang
Keyword(s):  
Energy System ◽  
Development Trend ◽  
Current Control ◽  
Research Progress ◽  
System Control ◽  
Energy Internet ◽  
Existing Problems ◽  
Collaborative Control ◽  
The Future ◽  
Integrated Energy System

As the only way to build the energy Internet, the key and difficult point of integrated energy system is to plan it reasonably and efficiently. This paper analyzes and summarizes the basic strategy, key technologies, control difficulties and influencing factors of integrated energy system control, summarizes the existing problems at home and abroad, and summarizes the content framework and control model of general integrated energy system control covering the source, network, load and storage links in a comprehensive way based on the latest research progress. According to the latest research progress, the paper analyzes the current control schemes, and concludes the development trend of the current integrated energy system collaborative control, makes a reasonable outlook on the future, and provides a way of thinking for people to study the integrated energy system in the future.

scholarly journals A review on the properties, reinforcing effects, and commercialization of nanomaterials for cement-based materials

2020 ◽  
Vol 9 (1) ◽  
pp. 303-322 ◽  
Author(s):  
Zhifang Zhao ◽  
Tianqi Qi ◽  
Wei Zhou ◽  
David Hui ◽  
Cong Xiao ◽  
...  
Keyword(s):  
Cement Hydration ◽  
State Of The Art ◽  
Research Progress ◽  
Market Survey ◽  
Future Perspectives ◽  
Nano Silica ◽  
Physical Processes ◽  
Existing Problems ◽  
Cement Based Materials ◽  
The Cost

AbstractThe behavior of cement-based materials is manipulated by chemical and physical processes at the nanolevel. Therefore, the application of nanomaterials in civil engineering to develop nano-modified cement-based materials is a promising research. In recent decades, a large number of researchers have tried to improve the properties of cement-based materials by employing various nanomaterials and to characterize the mechanism of nano-strengthening. In this study, the state of the art progress of nano-modified cement-based materials is systematically reviewed and summarized. First, this study reviews the basic properties and dispersion methods of nanomaterials commonly used in cement-based materials, including carbon nanotubes, carbon nanofibers, graphene, graphene oxide, nano-silica, nano-calcium carbonate, nano-calcium silicate hydrate, etc. Then the research progress on nano-engineered cementitious composites is reviewed from the view of accelerating cement hydration, reinforcing mechanical properties, and improving durability. In addition, the market and applications of nanomaterials for cement-based materials are briefly discussed, and the cost is creatively summarized through market survey. Finally, this study also summarizes the existing problems in current research and provides future perspectives accordingly.

Research Progress of the Surface Oxidation of Titanium and its Alloys

2013 ◽  
Vol 748 ◽  
pp. 188-191
Author(s):  
Hui Jun Yu
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Influence Factors ◽  
Surface Oxidation ◽  
Research Progress ◽  
Corrosion Resistant ◽  
Specific Strength ◽  
Existing Problems ◽  
High Specific Strength ◽  
Micro Arc Oxidation

Titanium and titanium alloys possess some attractive properties, such as excellent corrosion and erosion resistance, low densities, high specific strength and modulus, enabling them extensively used in aeronautical, marine, chemical and biomedical applications and so on. Nevertheless, Recent years, the corrosion resistance of titanium and titanium alloys is required to elevate in some fields, proper surface modification such as surface oxidation can solve the problems effectively. In this paper, the recent investigations of thermal oxidation and micro-arc oxidation to improve the corrosion resistant of titanium and its alloys are reviewed. The structures, properties and their influence factors of the coatings are analysed systematically. And the existing problems and the future prospect of the further researches is mentioned.

The Research on the Current Situation and Advances of Petrochemical Wastewater Treatment

2012 ◽  
Vol 550-553 ◽  
pp. 2416-2419 ◽  
Author(s):  
Wen Jun Xiang
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Petrochemical Industry ◽  
Present Situation ◽  
Current Situation ◽  
High Salt ◽  
Petrochemical Wastewater ◽  
Existing Problems ◽  
The Future ◽  
At Home

At present, it is so prominent in the development of the petrochemical industry in China，and it is accompanied by petrochemical wastewater, which has become a big problem need to solve urgently.Because petrochemical wastewater mainly contains benzene-compound, organic matter, high salt wastewater and oil sewage, etc. They are very damaging and highly contaminated. The composition and properties of the petrochemical wastewater were introduced firstly, the current situation of petrochemical wastewater treatment at home and abroad were reviewed in the study. Especially the development of petrochemical industry in sichuan was introduced. Based on the present situation and the existing problems, put forward some countermeasures and expect technique develop direction in the future.

Recent Patents on Third Generation Bearing Testing Machine

2021 ◽  
Vol 15 ◽  
Author(s):  
Yanling Zhao ◽  
Huanqing Zhang
Keyword(s):  
Large Scale ◽  
High Efficiency ◽  
Testing Machine ◽  
Theoretical Research ◽  
Third Generation ◽  
Existing Problems ◽  
Military Equipment ◽  
Bearing Life ◽  
The Future ◽  
Testing Technology

Background: Bearing testing machine is the key equipment for bearing design, theoretical research and improvement, and it plays an important role in the performance of bearing life, fatigue, vibration and working temperature. With the requirements of aerospace, military equipment, automobile manufacturing and other industrial fields of the bearing are becoming higher and higher. There is an urgent need for high-precision and high-efficiency bearing testing machines to monitor and analyze the performance of bearings. Objective: By analyzing the recent patents, the characteristics and existing problems of the current bearing testing machine are summarized to provide references for the development of bearing test equipment in the future. Methods: This paper reviews various representative patents related to the third generation bearing testing machines. Results: Although the structure of bearing testing machines is different, the main problems in the structure and design principle of bearing testing machine have been summarized and analyzed, and the development of trend and direction of the future bearing testing machine have been discussed. Conclusion: Bearing testing machines for health monitoring of bearing life cycle is of great significance. The current bearing testing machine has basically achieved the monitoring and analysis However, due to the emergence of new types of bearings, further improvement is still needed. With the development of testing technology towards intelligent and big data-driven direction, bearing testing machine is moving towards the type of cloud computing and large-scale testing.

scholarly journals The research on COVID-19 and economy from 2019 to 2020: analysis from the perspective of bibliometrics

2021 ◽  
Vol 12 (2) ◽  
pp. 217-268
Author(s):  
Nana Liu ◽  
Zeshui Xu ◽  
Marinko Skare
Keyword(s):  
Statistical Analysis ◽  
Value Added ◽  
Research Trends ◽  
Research Progress ◽  
Future Research ◽  
Human Society ◽  
Citation Networks ◽  
The Future ◽  
Meaningful Research

Research background: The outbreak and spread of COVID-19 brought disastrous influences to the development of human society, especially the development of economy. Purpose of the article: Considering that knowing about the situations of the existing studies about COVID-19 and economy is not only helpful to understand the research progress and the connections between COVID-19 and economy, but also provides effective suggestions for fighting against COVID-19 and protecting economy, this paper analyzes the existing studies on COVID-19 and economy from the perspective of bibliometrics. Methods: Firstly, the discussion starts from the statistical analysis, in which the basic distributions of the studies on different countries/regions, different publication sources, different publication years, etc., are presented. Then, the paper shows the cooperation situations of the researchers from analyzing the related citation networks, co-citation networks and cooperation networks. Further, the theme analysis of the related studies is presented, in which the related co-occurrence networks are shown, and then the detailed analyses of the studies are introduced. Based on these analyses, the discussions about future research are presented, and finally we draw a conclusion. Findings & value added: The analyses not only present the basic situation on the research about COVID-19 and Economy, but also show the future research trends, which can provide meaningful research expectations.

scholarly journals Research progress of carbon-assisted etching of silicon nanostructures

2021 ◽  
Vol 2076 (1) ◽  
pp. 012060
Author(s):  
Xiaoyu Yang ◽  
Ling Tong ◽  
Lin Wu ◽  
Baoguo Zhang ◽  
Zhiyuan Liao ◽  
...  
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Lithium Ion ◽  
Development Trend ◽  
Research Progress ◽  
Silicon Nanostructures ◽  
Storage Devices ◽  
Existing Problems ◽  
Energy Conversion And Storage ◽  
Silicon Based

Abstract Silicon nanostructures are attracting growing attention due to their properties and promising application prospects in solar energy conversion and storage devices, thermoelectric devices, lithium-ion batteries, and biosensing technologies. The large-scale and low-cost preparation of silicon nanostructures is critical for silicon-based advanced functional devices commercialization. In this paper, the feasibility and mechanism of silicon nanostructure fabricated by non-metallic carbon catalytic etching, as well as the currently existing problems and future development trend are reviewed.

scholarly journals Research Status and Development Trend of Magnetic Fluid Acceleration Sensors

2021 ◽  
pp. 10-15
Author(s):  
Mu Xueyu ◽  
Yang Shaojie ◽  
Kong Xiangdong
Keyword(s):  
General Structure ◽  
Inertial Mass ◽  
Development Trend ◽  
Research Progress ◽  
Acceleration Sensor ◽  
Magnetic Liquid ◽  
Existing Problems ◽  
Acceleration Sensors ◽  
New Type ◽  
The Difference

As a new type of accelerometer, in recent years, the magnetic liquid acceleration sensor has attracted widespread attention worldwide, and related research results have also continued to emerge. This article mainly introduces the theoretical basis and general structure of the magnetic liquid acceleration sensor, and according to the difference of inertial mass, briefly describes the research progress of the magnetic liquid acceleration sensor by national and foreign scholars in recent years and some in existing problems. Finally, suggestions and prospects for the future development trend of the magnetic liquid acceleration sensor are given.

Sign in / Sign up

Export Citation Format

Share Document