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Recently, the technologies to realize the miniaturization of the microstrip antenna include [2-4]: (1) loading short-circuit probe or with shorting walls technology;(2) the slot loaded method;(3) additional active network;(4) using a special material substrate.
(a) the results of S11,(b) the results of AR After optimization, the geometric dimensions of the proposed antenna are as follows: the ground plane is 60mm×60mm; the substrate is 60mm×60mm×3mm; the dielectric material of the proposed antenna is FR4 with er is 4.6 and the thickness h1 is 3mm; the length of the square patch L is 40mm, the two new truncated length are both DL1=4.7mm; the length of the rectangular slot L1 is 11.8mm, the width w is 1mm and the distance S is 6.2mm; the feed point dp1 is 8.8mm.
Acknowledgment This work was supported by the Natural Science Foundation of China (No.61102026), Natural Science Foundation Project of Chongqing (CSTC 2010BB2202 and cstcjjA40013).
[2] Rui-feng Xue and xiang Zhong: Journal of Electronic Technology, (2002), p.62-64

The development of thrusters with greater thrust and specific impulse was made possible by advancements in power supply, materials, and computer control systems.
The usefulness and efficiency of these propulsion systems have been demonstrated by prominent missions like NASA's Dawn spacecraft, which used ion propulsion to explore the asteroid belt, and the Mars Science Laboratory, which used a Hall-effect thruster to change course during its journey to Mars. 4.
Chinese Journal of Aeronautics, 2020. 33(12): p. 2999-3010
Plasma Sources Science and Technology, 2019. 28(6): p. 064003

In the process of long-term continuous charging, to verify material life and stability of charging coupler, and other characteristics, it must test its internal heat generating components and the temperature-rise components.
When the current is too large or the temperature exceeds the alarm limit high front panel is lit red light charging interface material while the system beeps.
The test system has a strong anti-interference ability and stable work characteristics conducive improve staff operating flexibility, and analyze historical data, to further protect the power system the quality of the network of key equipment Acknowledgements This work was supported by the High Technology Research and Development Program (863 Program) of China (No. 2011AA11A279), the Science and Technology Project of National Energy Administration (No.NY20110702-1), and the Technology Project of State Grid Corporation of China in 2013-2014 (Project Name is Study of Testing and Detection Technology for Electric Vehicle Charging/Battery Swap Infrastructure).
Journal of Beijing Union University (Natural Sciences), 2010, 24(3): 33-37 [5] SUI Xiu-mei, YU Jie, LI Chun-yu.

Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications A Study of the Biosorption Characteristics of Co 2+ in Wastewater using Pseudomonas aeruginosa So-Young Kang 1, Jong-Un Lee 2 and Kyoung-Woong Kim 1* 1 Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea, sykang@gist.ac.kr 2 Department of Civil, Geosystem, and Environmental Engineering, Chonnam National University, Gwangju, 500-757, Republic of Korea, jongun@chonnam.ac.kr *Corresponding author : kwkim@gist.ac.kr Keywords: cobalt, biosorption, Pseudomonas aeruginosa, pretreatment, competition, pH.
Materials and Methods The well-characterized, gram-negative bacterium P. aeruginosa PAO1 (courtesy of Dr.

With the progress of science and technology, especially the rapid development of hydrodynamics, aerodynamics, CFD, computer automation control, new materials, ocean climate monitoring and prediction, etc, all these provide solid technical support for research and development of modern high-performance sailing and safe maneuvering and efficient operation of ships equipped with sailing[4].
As the development of science and technology, sailing ship is gradually being replaced by power ship.
[3] Xiaoping Lu, Guanpu Wei, Wenyu Zhang, In Chinese: Journal of naval university of engineering, 2008, 4, pp45-50

From the author’s point of view the destruction of this water pressure blast, unlike common water pressure blast[8,9], is mainly caused by the pressure upon the brittle materials and the shearing force exceeding the dynamic resistance to the pressure, namely, by the press toward the cylinder wall exceeding its maximum resistance to pressure.
The base and the upper part of the cylinder can be water-blasted at on time by taking effective measures Project supported by Gansu Provincial Science and Technology Supporting Program.
Beijing: Science Press, 1992
Chinese Journal of Rock Mechanics and Engineering, 2003, 22 (11) : 543～545 (in Chinese) [8] Von Neuman J.

University of Shanghai for Science and Technology, Shanghai 200093, China chwn1125@gmail.coma, xyz.haogao@gmail.comb, lhyang@usst.edu.cnc Keyword: hydraulic digital technology; hydraulic high-speed on-off valve; turbine governor; correction; injector.
In a technical point of view, digital high speed on-off valve technology contains materials science, electronic control technology, manufacture technology.
Journal of Shanghai Jiaotong University 2002(9) In Chinese

Decolourization of Alizarin Red by Persulfate Shen-Xin, Lia Wei Hub Cheng-Duan, Wangc College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Zigong City 643000, Sichuan Province, China a lsx1964@sina.com bhuwei2113061@163.com cwcd@suse.edu.cn Keywords: Alizarin Red; Decolourization; Persulfat Abstract.The decolourization of dye wastewater by persulfate was studied using alizarin red as a model dye wastewater.
ACKNOWLEDGEMENTS The work was supported by the Opening Project of Key Laboratory of Green Catalysis of Sichuan Institutes of High Education(No.LZJ1102)and the. the Key Project of the Science and Technology Department of Zigong (No.10X01) References [ 1] Ge J, Qu J.
Jiang， Journal of Hazardous Materials . 164 （2009） 26–31

Introduction With the rapid development of science and technology, the requirement for precision and sensitivity of precision machinery is getting higher and higher, especially in the field of microelectronics, astronautics, ultra-precision machining, etc.
The design of strong laser multi-dimensional target ball precision focusing system, Journal of Scientific Instrument.
IOP science. (2008)
Design and Research of Micro-Displacement Amplifier Driven by Piezoelectric Actuator Advanced Materials Research.

Study on the Salt Precipitation Law of La Guocuo Salt Lake Brine with pretreatment at 5˚C Yuhu Cui1,a, Jianjun Yuan1,b 1College of Marine Science and Engineering, Tianjin University of Science & Technology, Tianjin, China 300457 ayangmeijie0304@163.com, bjj_yuan@tust.edu.cn Keywords: salt lake brine; pretreatment; evaporation and concentration; separation by crystallization Abstract.
Experimental Materials.
[7] Haimin Li, Zhilan Wang and Jize Li: Journal of Salt Lake Research, 1999, 7(3):15-21.