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V.e Department of Aeronautical and Space Engineering, Hanoi University of Science and Technology, No 1, Dai Co Viet, Hanoi, Vietnam adiem.phamgia@hust.edu.vn, bphamhoanganhbk@gmail.com, ckhanh.nguyenphu@hust.edu.vn, dhung.nguyenphu@hust.edu.vn, ehien.ngovan@hust.edu.vn Keywords: Quadrotor UAV, autonomous flying robots, CFD, hybrid dynamic system and hybrid automata.
A key characteristic of quadrotor UAVs is that the 6 Degrees of Freedom (DoF) dynamic model in the airframe is controlled by tuning the rotational speed of four motors placed symmetrically around that center at a radial distance.
Fig. 2 CAD model of the quadrotor UAV being developed In this application, ANSYS Fluent software [9] is used to assist us in carrying out the calculation processes; the software license has been registered by the authors’ Department of Aeronautical and Space Engineering, Hanoi University of Science and Technology.
This application can be extended with the increase in the altitude, radius of action, velocity and autonomy duration by using compatible physical components such as the engineering material, power resource, vision-based navigation components, etc.
References [1] Xun G., Zhicheng H., et al., Backstepping Sliding Mode Attitude Control of Quad-rotor with Adaptive Algorithm, 2nd International Conference on Materials, Mechatronics and Automation, Lecture Notes in Information Technology, Vol.15, ISBN 978-1-61275-015-6, ISSN: 2070-1918, ©2012 IERI, (2012), pp. 410-415

Morgan School of Engineering, Liverpool John Moores University, Byrom Street, Liverpool, UK Keywords: Grinding, CBN, High Speed, Optimisation Abstract.
A key question is, whether increased wheel speed justifies a more costly machine tool?
Introduction Vitrified CBN appears to have all the attributes required to bring it to the forefront of grinding technology, i.e. long re-dress life, high hardness, high wear resistance, lack of affinity with ferrous materials, porosity for chip clearance and coolant retention, and the ability to be re-dressed true.
Proc. of the Society of Manufacturing Engineers, Paper MR84-526
Davis (1992) Engineering, Quality and Experimental Design.

Method and Material Three filament comprising PET/PTT, PET and PTT were manufactured using the same spinning process ( Table 1) .
The key factor affecting the crimp property of PET/PTT filament was temperature.
References [1] S.P.Rwei, Y.T.Lin and Y.Y.Su: Polymer Engineering and Science Vol.45 (2005), p. 838-845 [2] T.
Sun: JournalL of Xi'an University of Engineering Science and Technology Vol. 20(2006), p. 706-709(In Chinese) [7] S.
Su: Polymer engineering and science Vol. 45(2005), p. 838-845 [9] J.

Red Snapper Fish stands as a key fishery commodity in Indonesia.
Although the raw materials used are halal, alcohol can be formed during the manufacturing process.
Triastuti, The Production of Gelatin from Snapper Scales (Lutjanus camphecanus Sp.) through Enzymatic Pretreatment, IPTEK The Journal of Engineering, vol. 8, 1 (2022), p. 44
Kerry, Use and application of gelatin as potential biodegradable packaging materials for food products, Int J Biol Macromol, 71(2014), pp.94-102
Hayes, Marine gelatine from rest raw materials, Applied Sciences (Switzerland), MDPI AG, vol. 8, 12 (2018).

A new type of fluid loss additive P1301 for oil field cementing Qiang Xiao1,a, Wenfa Xiao1,b, Xinxin Liu1,c, Litao Dong1,d 1Chemical Engineering Department, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620 China axiaoqiang4776@126.com, bxiaowf62@163.com, clxx_0609@126.com,ddonglt369@163.com Key word: fluid loss additive, orthogonal experiment, thermal stability, salt-tolerance Abstract: A novel cement fluid loss additive P1301, which can resist high temperature and high salt content, was synthesized using the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), acrylic acid(AA), acrylamide(AM) and n-vinyl-2-pyrrolidone(NVP) by the method of aqueous solution polymerization.
Experimental Material and instrument Main materials: 2-acrylamido-2-methyl-propane sulphonic acid(AMPS), acrylic acid(AA), acrylamide(AM) and N-Vinyl-2-pyrrolidone(NV) were of commercial chemical grade.
Journal of Petroleum Science and Engineering,78 ,2011),334–337

Research on Performance of Polyimide In-situ Modification Anionic Polymerization Nylon 6 Hong-Kai ZHAO1, a, Hong-Li WANG1,b 1College of Material Science and Engineering, Jilin Jianzhu University, Changchun, Jilin, 130118, China ahkzhao003@126.com, b181239395@qq.com Keywords: Caprolactam, Nylon 6, Anion, Polyimide, In-situ Polymerization.
Introduction Nylon 6 is a widely-used engineering plastic, but it has the disadvantages of lower dry state and low-temperature impact strength, larger water absorption, etc.
Experimental Section Materials Caprolactam, industrial grade; NaOH, analytically pure; toluene diisocyanate (TDI), analytically pure (distillation before use); bisphenol A diamine, industrial grade; Shanghai Research Institute of Synthetic Resins; bisphenol A diether dianhydride, industrial grade; Shanghai Research Institute of Synthetic Resins; N-methyl pyrrolidone (NMP): it shall be dried, distilled and purified through 4A molecular sieve before use; methanol, analytically pure; acetone (analytically pure): add KMnO4 into the acetone until the liquid turns pink, lay it aside for 3 to 4d, and add anhydrous calcium sulfate for dehydration, distillation and purification; bromocresol green indicator: 0.1g bromocresol green dissolves in 100mL ethanol with the volume fraction of 20%; 0.1mol/L acetone/di-n-butylamine solution: make 2.60g di-n-butylamine dissolve in acetone, move it into the 200mL volumetric flask, dilute it to the scale with acetone, shake it well, keep in dark place, and
Part of this work is supported by Significant Scientific and Technological Key Project of Science and Technology Program in Jilin Province (20130204009SF).
Polymer Engineering and Science, 2006, 46(9):1196-1203

Faculty of Mechanical and Electronic Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 2.
School of Material of Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China Key words: semi-solid; A356 alloy; slightly electromagnetic stirring; Ti-based refiner Abstract.
Chakraborty: Materials Science and Engineering Vol.369(2004), p.275 [5] P.

Study on the absorption action of modified activated carbon for phenol Chunsheng DING1,a, Fangming NI1,b , Huiye CAI1,c, Qianfen ZHU 1,c , Yinglong ZOU 1,c 1 College of Architecture and Civil Engineering, Zhejiang University of Technology, Hangzhou 310032, China a dingcs99@163.com, btianying285537@163.com, czyldragon2008@sina.com Key words: modified activated carbon, phenol, copper nitrate, dynamics Abstract.
Activated carbon has a developed pore structure and large specific surface area, as a fine absorption material, it has been widely used in the purification of industrial water, drinking water and wastewater[5].
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS, 1999,(5):31-35
HE BEI CHEMICAL ENGINEERING AND INDUSTRY, 2007, 30(6): 48-49
Microporous and Mesoporous Materials, 2005,80: 95-106

The experience statistics model, starting researches from the aspect of erosion element, studies the relation expression among the elements of soil erosion element, precipitation, vegetation, soil, terrain and water-soil conservation on the basis of observation materials and statistics technologies.
Thirdly, simulation model method, which is applied most widely in soil erosion research for its applications to both the areas with soil erosion monitoring materials and the areas without monitoring materials.
Connected to the local terrain characters and according to the related observation materials of Henan, each element value of soil erosion is worked out and applicable soil erosion forecasting model is set up.
In recent years, many Chinese scholars, based on the regional materials, also established a simple algorithm for R evaluation[6]（Zhang Youquan, etc., 2007）: R＝0.207（P×I60/100）1.205 （3） P refers to annual (quarter or monthly) precipitation, I60 refers to the highest precipitation per hour (quarter or monthly)（mm）.
Transactions of the Chinese Society of Agricultural Engineering, 2006,22(5):50 - 54

Preparation and Properties of a Self-Deicing Coating Based on Layered Double Hydroxide Yi Yia, Jianying Yub, Xiao Chenc, Zhilong Caod and Min Wue State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070 China a18771018094@163.com, bjyyu@whut.edu.cn,c375637962@qq.com, d1443078083@qq.com, e2452110394@qq.com Keywords: Asphalt pavement, Layered double hydroxide, Self-deicing coating, Deicing performance, Deicing durability.
Experimental Materials.
Construction & Building Materials, 2012, 30:174-179
Sichuan Building Materials,2014(2):187-189
Journal of Traffic and Transportation Engineering, 2013, 13(4)