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Study and Application on Crystallization Temperature of Mould Powder for High-speed Continuous Casting Ying Xu1, a, Liguang Zhu2, b 1College of chemistry and chemical Engineering, Hebei United University, Tangshan, 063009, China 2College of Metallurgy Science and Engineering, Hebei United University, Tangshan, 063009, China a yuyingdd@yahoo.com.cn, b zlg@heut.edu.cn Keywords: Mould Powder, Crystallization Temperature, Composition Design Abstract: Crystallization rule of mould powder for high-speed continuous casting was studied and the suitable composition powder was done.
The principle is that put the two platinum crucibles containing the tested and reference samples in the same furnace, which were placed the same material thermocouple at the bottom.
For low alloy steel casting, the key issue is to overcome the incidence of adhesion breakout.

Wijaya3,d 1Department of Mechanical Engineering and Industrial, Universitas Teuku Umar, Aceh, Indonesia 2Department of Mechanical Engineering and Industrial, Universitas Syiah Kuala, Aceh, Indonesia 3Master program for Computer Science, Faculty of Mathematics and Natural Science, Universitas Gajah Mada, Yogyakarta, Indonesia airwansyah@utu.ac.id, bRizkiagamsyahputra@utu.ac.id, cfaridjayadi@utu.ac.id, radenwijaya@ut.ac.id Keywords: Agriculture, Unmanned Aerial Vehicles, Monitoring System.
The design process is methodically delineated, encompassing estimations, calculations, material selection, conceptual designs, and VTOL UAV prototype testing.
PID Control Proportional-Integral-Derivative (PID) control is a key technique for stabilizing UAVs [10].
To optimize aerodynamic performance in horizontal flight, the central hub can be clad with lightweight materials specifically engineered to enhance lift and reduce drag.
In: Futuristic trends in agriculture engineering & food sciences, vol. 3B.

The use of the base course and the selection of base material can be determined by the requirement of bearing capacity, foundation stability, material source and investment conditions etc.
The hardening and paving types of the intermediate zone and road shoulder is decided by these conditions: the requirements of the riding quality, economic conditions, materials source, drainage conditions and structure stability etc.
If the strip roads have a bad hydrological and drainage condition, the cushion is needed or using grain materials which have a good water stability to replace the local subgrade. 2.2 Drainage design Part of the water on the strip roads surface is drained through the road camber, the others permeate into the inner of pavement structure.
In this situation, the drainage state of pavement structure is affected by the backfilling materials, paving style of intermediate zone and road shoulder, base course materials, surrounding terrain and drainage conditions.
It is also better to select the cushion material which has a good permeability.

Zinc and cadmium chalcogenides are the key components of II-VI semiconductors.
These materials exhibit direct band gaps of 3.6 and 2.42 eV, respectively, at ambient temperature [9-11].
Thus, our study suggests that Cr doped CdZnS NPs can be used as promising materials to enhance the optoelectronic devices, bioimaging and photocatalysis.
[12] Divya Chawla, Navendu Goswami, Structural and optical properties of CdZnS nanoparticles by exploding wire technique, Materials Today: Proceedings, 28(1) (2020) 278-281
Chatterjee, Synthesis and characterization of PVP-encapsulated ZnS nanoparticles, Optical Materials 28 (2006) 1047-1053

Bike Sharing System in Foshan:Planning &Practice Xiao ming ZENG1,a , Yu hong ZHANG2,b 1Foshan University, Civil Engineering Department, GuangDong 2Foshan University, Civil Engineering Department, GuangDong a jtzxm2007@163.com, bzyh@fosu.edu.cn Keywords: sharing；bicycle lanes；bicycle station；operation management；planning and design.
Bicycle sites should be constructed with specified material, in the interest of parking, drainage and sanitation. 3.1.2 Public Bicycle Site Construction Public bike sites mainly locate in the residential areas, bus stations or terminal aresa and other places of employment and consumer focus area.
Regional stage construction scale table Region First Stage Second Stage Third Stage Total Service Points Number of Bikes Service Points Number of Bikes Service Points Number of Bikes Service Points Number of Bikes zumiao 50 2500 31 1000 16 300 97 3800 shiwang 33 1300 33 1000 37 1000 103 3300 zhangcha 12 500 15 450 23 600 50 1550 nanzhuang 5 200 21 550 24 600 50 1350 Total 100 4500 100 3000 100 2500 300 10000 Bicycle Lanes Planning 4.1 The Network Classification and Technical Standard of the Bicycle Lanes 4.1.1 Network Classification The key to develop the bicycle transportation system is to adopt a bicycle transport development model which adapt to the integrated transportation system.

Minorities of key enterprises or that involving national security, public safety or social utility of the unit or organization can still use the free allocation, but free emission rights these units received will be reduced even cancel with the time and the emission rights market is mature gradually, and the received emission rights can not enter the market transactions, can only be recovered by the government as trading reserves or reallocate.
Literature research shows that although most countries pay attention to the technology improvement of emissions trade, but the material advance acquired from environmental governance in environmental property rights perspective is very few.
Systems Engineering-Theory Methodology Application，(2004)
Systems Engineering-theory & Practice(2002)

Synthesis of biodiesel from castor oil catalyzed by cesium phosphotungstate with the assistance of microwave Hong Yuan1, a, Qing Shu2,b 1 School of Chemistry and Chemical Engineering, Beifang University of Nationalities, Yinchuan 750021, Ningxia hui autonomous region, China 2 School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China a yuan.hong2012@yahoo.cn, b shuqing@tsinghua.org.cn Keywords: Biodiesel; Cesium phosphotungstate; Microwave radiation; Castor oil Abstract.
A wide variety of vegetable oils (e.g., soybean oil and rapeseed oil) can be employed as the raw material for the production of biodiesel.
Acknowledgements Financial support for this work from the National Natural Science Foundation of China (21266001/B060905), the State Ethnic Affairs Commission Key Laboratory of Chemical Technology foundation of Beifang University of Nationalities (2010SY15) and independent scientific research fund project of Beifang University of Nationalities（2011ZQY033）are gratefully acknowledged.

Research and Development of Multi Section Floating Mechanical Wave Energy Power Generation Device FANG Zi-fan1,2,3,a,MA Zhen-hao1,b,FANG Jing3,c GAO Shu1,d,and HE Kong-de1,e 1College of Mechanical & Material Engineering China Three Gorges Univ., Yichang 443002, China; 2Hubei Key Laboratory of Hydroelectric Machinery Design and Maintenance, China Three Gorges Univ.
[2] You Yege, Sheng Songwei and Wu Bijun: The Development Status and Prospects of Ocean Wave Power Generation Technology, edited by The15th China Sea (offshore) Engineering academic Symposium Proceedings, 9-11(2011)

Project profile Chicken chicken ugly mountain tunnel is located in sichuan province ganzizhou ugly the mountains, provincial highway 215 line to overcome elevation difference, optimization of linear, improve the driving safety comfort, with 2745 m long tunnels, it greatly reduces the route of the mountains of altitude, also avoids the ice and snow and fog period long road tunnel across the height above 4150, for the high altitude cold extra-long tunnel is the symbol of the provincial highway 215 line engineering two-way traffic tunnels, the tunnel for the single hole tunnel design standards according to the secondary road 40 km/h speed, clearance take 5 m height, construction methods using conventional drilling and blasting method, implemented in two steps, use open roof tunnel longitudinal slope, appropriately increase the slope to facilitate drainage relatively poor geological conditions, but there is no fault, using compound lining The region high altitudes, low temperature, low pressure
, low oxygen partial pressure, according to the material, oxygen partial pressure of 21.15 kpa sea region, oxygen partial pressure tunnel site area only 12.64 kpa, the workers should have good physical quality, if high dust concentration in the tunnel construction, will reduce the oxygen partial pressure, the work and the physical body will produce adverse effect to the worker, as a result, high-altitude alpine tunnel construction needs to take feasible dust prevention measures Different processes of dust concentration monitoring and dust prevention measures High-altitude alpine tunnel construction dust source mainly include the following: (1) the original dust dust explosion (2) the bankruptcy of surrounding rock (3) slag dust spray springback (4) automobile exhaust particles [3, 4], for each step of the process in tunnel construction, dust content in the tunnel is very different, the same processes adopted different dust prevention measures, the effect is very different, have chicken
Conclusions and recommendations According to the field monitoring data we can draw the following conclusion and put forward the high-altitude alpine tunnel dust construction advice: (1) With the increase of depth of tunnel, dust concentration gradually increased, especially the constraints has the highest concentration, therefore, should strengthen the constraints of dustproof work; (2) The dust concentration of different construction process in turn is: shotcrete operation > Slag operation > tunnel face blast > tunnel face drill> Install steel arch, the key working procedure is shotcrete operation and slag operation; (3) sprinkling water on the road in slag operation can play a good effect of reducing dust, because temperature is low, the hole section is unsuited to sprinker only proper spray; (4) Using wet drilling technology to reduce the dust effect is remarkable, the temperature of constraints and is not too low so can use wet drilling technology; (5) In slag operation, except
Reference: [1] Wang xinghua, Plateau permafrost tunnel engineering research, Beijing, China railway Publishing House

Research of Parametric Design and Outside Rearview Checking Method of Passenger Vehicle Yanyun XING1, a, Bo YU2,b and Fangqun YANG3,c 1College of Automotive and Transportation, Tianjin University of Technology and Education, Tianjin, China, 300222 2,3Automobile Engineering Research Institute, China Automotive Technology and Research Center, Tianjin, China, 300300 a xyyyb2013@163.com, b jluqicheyb@hotmail.com, c 148087009@qq.com Key words: Rearview; Top-down checking; Reverse checking; Parameterize Abstract: Vehicle driving safety has a close relationship with the outside rearview.
The outside rearview mirror checking parametric design After checking the outside rearview mirror if they do not meet the requirements above, modeling department need to redesign the outside rearview mirror, so repeatedly, waste a great deal of manpower material resources, therefore, in the process of checking, checking department if the outside rearview mirror center of curvature and the position of the mirror can be parameterized, design reasonable curvature center and the mirror position, feedback to modeling division, can greatly improve the work efficiency.
Conclusions This article is based on using CATIA software ECER46 regulations outside rearview mirror of positive and reverse the two methods of checking machine and parametric design method, the results show that the above method to reduce the workload of engineering and technical personnel, improve work efficiency, so that we can to meet under the condition of market competition, shorten the development cycle, to design and manufacture in the shortest possible time the higher and more stable product quality, saving the cost of development and design.