Research Progress and Development Trend of TCM Facial Mask in Treating Acne

2021 ◽  
Keyword(s):  
Development Trend ◽  
Research Progress ◽  
Facial Mask

scholarly journals Research Progress and Development Trends of Acoustic Metamaterials

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4018
Author(s):  
Hao Song ◽  
Xiaodong Ding ◽  
Zixian Cui ◽  
Haohao Hu
Keyword(s):  
Doppler Effect ◽  
Negative Refraction ◽  
Development Trend ◽  
Atomic Clusters ◽  
Research Progress ◽  
Acoustic Metamaterials ◽  
Development Trends ◽  
Related Research ◽  
The Past ◽  
Anomalous Doppler Effect

Acoustic metamaterials are materials with artificially designed structures, which have characteristics that surpass the behavior of natural materials, such as negative refraction, anomalous Doppler effect, plane focusing, etc. This article mainly introduces and summarizes the related research progress of acoustic metamaterials in the past two decades, focusing on meta-atomic acoustic metamaterials, metamolecular acoustic metamaterials, meta-atomic clusters and metamolecule cluster acoustic metamaterials. Finally, the research overview and development trend of acoustic metasurfaces are briefly introduced.

Recent Advances in the Study of Film Cooling on the Gas Turbine Blade

2014 ◽  
Vol 971-973 ◽  
pp. 143-147 ◽  
Author(s):  
Ping Dai ◽  
Shuang Xiu Li
Keyword(s):  
Gas Turbine ◽  
Turbine Blade ◽  
Film Cooling ◽  
Gas Turbines ◽  
High Performance ◽  
Leading Edge ◽  
Development Trend ◽  
Research Progress ◽  
Gas Turbine Blade ◽  
New Generation

The development of a new generation of high performance gas turbine engines requires gas turbines to be operated at very high inlet temperatures, which are much higher than the allowable metal temperatures. Consequently, this necessitates the need for advanced cooling techniques. Among the numerous cooling technologies, the film cooling technology has superior advantages and relatively favorable application prospect. The recent research progress of film cooling techniques for gas turbine blade is reviewed and basic principle of film cooling is also illustrated. Progress on rotor blade and stationary blade of film cooling are introduced. Film cooling development of leading-edge was also generalized. Effect of various factor on cooling effectiveness and effect of the shape of the injection holes on plate film cooling are discussed. In addition, with respect to progress of discharge coefficient is presented. In the last, the future development trend and future investigation direction of film cooling are prospected.

Screening and Influencing Factors of Halophilic Denitrifying Bacteria

2012 ◽  
Vol 550-553 ◽  
pp. 1455-1459
Author(s):  
Jing Tang ◽  
Hong Ming E ◽  
Jin Xiang Fu ◽  
Jin Nan Chen ◽  
Ming Fan
Keyword(s):  
Nitrogen Removal ◽  
Morphological Characteristics ◽  
Development Trend ◽  
Denitrifying Bacteria ◽  
High Salt ◽  
Research Progress ◽  
Saline Wastewater ◽  
Carbon And Nitrogen ◽  
Petroleum Chemical ◽  
Seafood Processing

With nitrite or nitrate nitrogen as electron acceptor in the high salt conditons, halophilic denitrifying bacteria can transfer nitrite or nitrate to nitrogen, thereby purifying the high-salt wastewater. Halophilic denitrifying bacteria play an important role in the carbon and nitrogen removal of saline wastewater, such as petroleum, chemical industry, seafood processing and seafood farming. This article dissussed halophilic denitrifying bacteria screening, the main types and the corresponding morphological characteristics, then we focused on the research progress of main factors of halophilic denitrifying bacteria’s growth and nitrogen removal. Finally put forward the current problems of the research and development trend of halophilic denitrifying bacteria.

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.

scholarly journals Overview of The Sustainable Technology System about Rural Residential Construction

2021 ◽  
Vol 237 ◽  
pp. 04001
Author(s):  
Ling Yuan ◽  
Xiaohui Liu ◽  
lisha Wang ◽  
Xianming Huang
Keyword(s):  
Residential Buildings ◽  
Development Trend ◽  
Sustainable Construction ◽  
Research Progress ◽  
Residential Construction ◽  
Construction Technology ◽  
Local Conditions ◽  
Technology System ◽  
Common Problems ◽  
Basic Characteristics

This paper is based on the national key R&D project of China during the 13th Five-Year Plan—“Research On The Construction Technology System of Green Livable Rural Residential Buildings” (2018YFD1100205). Based on the quantitative analysis and systematic sorting of the research journals on sustainable rural residential construction, this paper summarizes the research progress and development trend of sustainable rural residential construction, analyzes the basic characteristics and common problems of rural residential construction in China at present, and proposes a sustainable construction strategy and research system according to local conditions.

scholarly journals Research progress of analysis method of slope stability combined with hot spots

2020 ◽  
Vol 198 ◽  
pp. 02008
Author(s):  
XIE Qiao ◽  
ZHANG Jia-sheng ◽  
Wang Xuan
Keyword(s):  
Slope Stability ◽  
Hot Spots ◽  
Development Trend ◽  
Research Progress ◽  
Analysis Methods ◽  
Scope Of Application ◽  
The Times ◽  
The Development Trend ◽  
Selection Of

The analysis methods and theories of slope stability are constantly improving and developing, and more methods in line with the development characteristics of the times have been put forward by scholars at home and abroad. Combined with the latest research hot spots in the direction of analysis methods of slope stability in the world, the analysis methods of slope stability are systematically classified and summarized; The principles, characteristics, scope of application of various methods are summarized; The development trend of slope stability analysis is comprehensively analyzed from various aspects. It provides the follow-up scholars with the research of new methods. It can provide reference for the selection of evaluation methods of practical slope engineering stability.

Lithium Dendrite Growth Process and Research Progress of its Inhibition Methods

2021 ◽  
Vol 1027 ◽  
pp. 42-47
Author(s):  
Hao Ran Zheng
Keyword(s):  
Growth Process ◽  
Specific Capacity ◽  
Development Trend ◽  
High Energy ◽  
High Energy Density ◽  
Research Progress ◽  
Future Research ◽  
Battery Life ◽  
Lithium Dendrites ◽  
Lithium Dendrite

Metal lithium anodes, with extremely high specific capacity, low density, and lowest potential, are considered to be the most promising anode materials for next-generation high-energy density batteries. However, in the process of repeated plating and stripping of lithium, lithium dendrites are easily grown on the surface of the metal lithium anode, which greatly reduces the capacity of the battery, even causes hidden safety risks and shortens the battery life. This paper reviews the modification methods of lithium anodes based on the growth process of lithium dendrites, and introduces several current modification methods, including electrolyte additives, artificial SEI and new structure of lithium anodes. Finally, the future research direction and development trend of metal lithium anodes are prospected.

Research Progress of Bionic Water Strider Robot

2021 ◽  
Vol 14 ◽  
Author(s):  
Jingang Jiang ◽  
Qiyun Tan ◽  
Xiaoyang Yu ◽  
Dianhao Wu ◽  
Liang Yao
Keyword(s):  
Water Surface ◽  
Visual Analysis ◽  
Development Trend ◽  
Research Progress ◽  
Future Research ◽  
Water Strider ◽  
Quality Of Water ◽  
The Development Trend ◽  
Development Prospects

Background: As a kind of bionic robot, the bionic water strider robot can achieve sliding, jumping and other movements on the water surface, with advantages of small size, light weight, flexible movements and other characteristics. It can detect the quality of water, investigate and search the water surface and perform some other operations. It has a very broad range of applications and development prospects. Therefore, the trend of biomimetic water strider robot is catching more and more attention. Objective: To provide an overview of the bionic water strider robot and introduce their classification, characteristics and development. Methods: This paper reviews various productions and patents related to the bionic water strider robot from 2003 to the present. The sources of the papers include: CNKI, Wanfang, Patent publication announcement in China, Web of Science, IEEE, Elsevier, Springer-Verlag, Espacenet, FPO IP Research amp; Communities. To obtain the results, endnote is used for documentation and citesapce was used for visual analysis. Results: The mechanical structure of existing bionic water strider robots is analyzed and compared. The typical characteristics are concluded. The main problems in its development are analyzed and the development trend is foreseen. The current and future research of the productions and patents on the bionic water strider robot are discussed. Conclusion: The optimization and development of the structure of the bionic water strider robot and the development of associated components help to improve the simulation of the water strider's motion and to perform better on task in a complex water surface environment. In the future, with the deepening and improvement of the research, the bionic water strider robot will develop towards miniaturization, intelligence and integration.

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