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Optimization of Glucosinolates Extracted from Maca(Lepidium meyenii) by Combined Ultrasonic and Microwave Extraction with Response Surface Methodology Chunzi LUO1,2,3,a,Hong Zhang1,2,b, Hua Zheng1,2,c, Jiayan Zhang3, Jin Gan1,2 1Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming, 650224, China 2Research Center of Engineering and Technology on Forest Resources with Characteristics, State Forestry Administration, Kunming, 650224, China 3College of Materials Engineering, Southwest Forestry University, Kunming, 650224, China a441571066@qq.com, bkmzhhong@163.com (corresponding author), chua-zheng@sohu.com Key words: ultrasonic; microwave; maca(Lepidium meyenii); glucosinolates Abstract: For better development of the function composition of maca, combined ultrasonic and microwave method was used to extract glucosinolates of maca in this paper.
Material and methods Material and chemical reagents a) Dry maca(Provided by Mid-Yunnan Highland Experiment Station, Research Institute of Resources Insects, Chinese Academy of Forestry); b) Sinigrin(Sigma Co.

Experimental studies on the volume change of the super high strength and high performance concrete Feng Xing1,a, Hui Yin 1,b, Chong Wang 2,c 1 Department of Civil engineering, The key Lab on durability of civil engineering in Shenzhen, Shenzhen University, Shenzhen, Guangdong, 518060 2 Chongqing University, Chongqing, 400045 a mail: xingf@szu.edu.cn, bmail:yinhui515@126.com, cmail:wangch@yahoo.com.cn Keywords: volume change, shrinkage, curing condition, binder-aggregate ratio, super high strength concrete, high performance concrete Abstract: Volume change of super high strength and high performance concrete with different binder-aggregate ratios and different curing conditions were investigated in this paper, and the volume changes of cement paste and mortar were also tested.
Experimental 2.1 Materials The raw materials of the concrete that used in this study contained Ordinary Portland cement(C), the grade was 525; Fine aggregate(S), Medium sand, F.M2.40; Water(W); Coarse aggregate(G), Limestone crushed stone; Silica fume(SF); Slag(SL); Limestone powder(LP); Super plasticizer(SP), Amino-silicate type super plasticizer, water reducing ratio was 32%.

Optimization of Extraction of Tannins from Banana Peel Using Response Surface Methodology Tingru Wu1,a, Hongling Wang*2,b, Shiwen Jiang3,c, Dandan Liu4,d Fei Wei5,e 1-5Life Engineering College of Shenyang Institute of technology, Fushun 113122 PR, China; a351868272@qq.com,blovelingling.1314@163.com,c934115603@qq.com,d956117562@qq.com, e352596961@qq.com Key words: tannin; banana peel; response surface methodology; optimization Abstract: Response surface methodology (RSM) was employed to optimize the extraction conditions of tannins from banana peels.
Materials and methods Materials Fresh bananas were purchased from farmers market; Escherichia coli, Staphylococcus, Rhizopus sporangia, Penicillium and Saccharomycetes were all preserved in our laboratory; All the chemicals and reagents were obtained commercially and were of analytical grade.
Transactions of the Chinese Society of Agricultural Engineering. 2003,19(2): 186-189.

Martin d’Hères, Cedex, France 2School of Physics and Materials Engineering, Monash University, Clayton, 3180, Vic., Australia 3McMaster University, Department of Materials Science and Engineering, Hamilton, Ontario, Canada ayves.brechet@ltpcm.inpg.fr, bhutchinson@spme.monash.edu.au, cpurdyg@mcmail.cis.mcmaster.ca, dzurobh@mcmail.cis.mcmaster.ca Keywords: Steel, Phase transformations, Diffusion Abstract.
The interfacial conditions are the key issue.

Senthil Kumaran4,b 1,2,3,4Department of Civil, Environmental and Geomatics Engineering, University of Rwanda, Kigali, Rwanda aremick05@yahoo.fr, bkumarangs@yahoo.com Keywords: Landfill, Groundwater, soil, pollution, Heavy Metals, Physico-chemical parameters Abstract.
Potential sources of CO2 gas are (a) CO2 gas originating from municipal wastes within unlined landfill sites, (b) CO2 gas due to the oxidation of organic materials leaked from old latrines in the area, and (c) HCO3-from sulfate reduction of organic materials in the aquifer. [15] · CH2O+O2↔ CO2+H2O (3) · 2CH2O +SO42- ↔ H2S+2HCO3- (4) The concentration of NO3 in water sample varied from 55 to 67.5mg l-1 as shown in the Table 4.
The leachate is generally a strongly reducing liquid formed under Methanogenic conditions and on coming into contact with aquifer materials has the ability to reduce sorbet heavy metals in the aquifer matrix.
[17] Rajkumar Nagarajan, Subramani Thirumalaisamy and Elango Lakshumanan Impact of leachate on groundwater pollution due to non-engineered municipal solid waste landfill sites of erode city, Tamil Nadu, India journal of Environmental Health Sciences & Engineering (2012), 9:35
Prasada Rao Impact of Leachate on Soil Properties in the Dumpsite (A Case study of Greater Visakhapatnam) International Journal of Engineering Research and General Science Volume 4, Issue 1, January-February, 2016 ISSN 2091-2730.

Design of Novel Integrated Heating and Riveting Control System for TB2 Titanium Alloy Rivet Xiao Yua, De-Yin Zhangb (Aviation Engineering Institute, Civil Aviation Flight University of China, Sichuan, 618307) ayuxiao825@hotmail.com, bmorrisvip@cafuc.edu.cn Keyword: Current Detect, Heating Time, Riveting, Heating Temperature, Titanium Alloy Rivet.
And now, due to light weight and high strength hardness, the titanium alloy material has widely been used in aircraft production.
So the heating temperature and heating time are key factors for riveting quality.
-Q., Development of riveting technology [J] (in Chinese), Aviation engineering and maintenance, 2000, 6: 41-42 [5]Cao Z.
-Q., Liu H., Technology of electromagnetic riveting [J](in Chinese), J. of plastic engineering, 2007, 14(1): 120-123 [6]C.

Experimental study on accelerated speed of concrete sulfate attack Hongfei Liu1, a, Fajun Huang1, b 1College of civil engineering , Jiaxing University Yuexiunan Road 56,Jia xing city, Zhe jiang Province, China, Zip 314001 a lhf622@126.com, b newhfj@163.com Keywords: Sulfate attack, Accelerated testing, Wet and dry cycle, Specimen size, Attack solution temperature.
Introduction Sulfate attack is an important form of damage accumulation caused by concrete material and structure subject to environmental factor, which are serious threats to the safety and durability of concrete structure given rise to wide concern.
This method is highly concerned since it’s close to the actual engineering corrosion.
Experiment Materials.
Lin, etc .in: Research and application on the durability of key project concrete, edited by Y.L.WANG, Y.YAO, Beijing: Chinese building industry press, (2001), p.299-336 [2] Y.N.LIANG, Y.S.YUAN: Journal of the Chinese Ceramic Society(in Chinese). 04 (2007), p. 504-508 [3] L.

Islam2 Department of Mechanical Engineering, Curtin University Perth, WA 6845, Australia 1yuxia.lu@postgrad.curtin.edu.au, 2M.N.Islam@curtin.edu.au Keywords: Thermally-induced volumetric error, error compensation, positioning error, dimensional accuracy Abstract.
Aluminum alloy 6061 was chosen as the work material.
The blank material was initially clamped onto the machine table, according to the work coordinate system (WCS) and the machine was switched on (cold start).
International Review of Mechanical Engineering (IREME), 5(5), (2011)
Proc. of the International Conf. on Mechanical Engineering and Mechatronics, Ottawa, Ontario, Canada, 15-17 August 2012, Paper No 31, pp. 1-8

Engineer. and Technol. 4 (2013) 310–316
Vazhenin, The assessment of wear resistance of thin-layer carbide coatings under vacuum arc deposition AER-Advances in Engineering Research, vol. 177, pp. 213–217, 2018, Int.
Symp. on Engineer. and Earth Sci
Materials Sci. and Engineer. 327 (2018)
Sci. and Engineer. 14 (2016) 5256347

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