scholarly journals A study on the processing technology for Rhizoma Coptidis

2022 ◽  
Vol 22 (1) ◽  
Author(s):  
Yunhong Wang ◽  
Weihan Qin ◽  
Yujie Yang ◽  
Hui Bai ◽  
Jirui Wang ◽  
...  
Keyword(s):  
Processing Time ◽  
Design Method ◽  
Relative Content ◽  
Processing Technology ◽  
Processing Temperature ◽  
Coptis Chinensis ◽  
Box Behnken Design ◽  
Rhizoma Coptidis ◽  
Time Processing ◽  
Effective Components

Abstract Background The present study intends to optimize the processing technology for the wine-processing of Rhizoma Coptidis, using alkaloids as indicators. Method In the present study, the Box–Behnken design method was adopted to optimize the processing technology for Rhizoma Coptidis, using the alkaloid component quantities as the index. 100 g of Rhizoma Coptidis slices and 12.5 g of Rhizoma Coptidis wine were used. After full mixing, box-Behnken design method was used to optimize the processing time, processing temperature and processing time of coptis chinensis by taking alkaloid content as index. After mixing well, these components were fried in a container at 125 °C for 6 min and exhibited good parallelism. Results The content of alkaloids in coptis chinensis was the highest after roasting at 125 °C for 6 min. The characteristic components were berberine hydrochloride, and the relative content was about 15.96%. And showed good parallelism. The effective components of Rhizoma Coptidis were primarily alkaloids. Conclusion The optimized processing technology for Rhizoma Coptidis is good.

Study on Processing Technology of Waste Tire Crumb Rubber Modified Asphalt

2011 ◽  
Vol 305 ◽  
pp. 402-405 ◽  
Author(s):  
Lan Yun Chen ◽  
Zhuo Hong Cong ◽  
Qing Long You ◽  
Nan Xiang Zheng
Keyword(s):  
High Speed ◽  
Rapid Development ◽  
Crumb Rubber ◽  
Processing Technology ◽  
Processing Temperature ◽  
Time Processing ◽  
Waste Tires ◽  
Modified Asphalt ◽  
Waste Tire ◽  
Stirring Time

The rapid development of automotive brought a lot of accumulation of waste tires. Waste tire crumb rubber mixed with asphalt not only eliminates its impact to the environment, but also improves the performance of asphalt. Crumb rubber modified asphalt was made by the high-speed shearing device using waste tire crumb rubber mixed with Karamay-90 asphalt. The influence of mixed time, stirring time, processing temperature and the fineness of crumb rubber to the performance of crumb rubber modified asphalt was studied.The best processing technology of crumb rubber modified asphalt was obtained.

scholarly journals Comparison of Phenols Content and Antioxidant Activity of Fruits from Different Maturity Stages of Ribes stenocarpum Maxim

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3148 ◽  
Author(s):  
Yuwei Wang ◽  
Delin Qi ◽  
Shulin Wang ◽  
Xiaohai Cao ◽  
Ying Ye ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Design Method ◽  
Extraction Process ◽  
Coumaric Acid ◽  
Solvent Concentration ◽  
Box Behnken Design ◽  
Maturity Stages ◽  
Ripening Stages ◽  
Intracellular Ros ◽  
Unripe Fruits

Differences in the content of nine phenols and the antioxidant capacity of Ribes stenocarpum Maxim (RSM) fruits at different stages of maturity were investigated, and the extraction process of polyphenols from RSM was also optimized using Box-Behnken design method. Results showed that the content of the nine phenols varied considerably at different ripening stages; catechin, chlorogenic acid, coumaric acid, and ferulic acid were abundant in immature fruits but decreased with fruit ripening, whereas the levels of rosemary acid and querctin acid were low in immature fruits and increased with time, reaching the highest value after the fruit was completely mature. The phenols extracted from RSM fruits possessed good antioxidant activities for effective and rapid scavenging of DPPH and ABTS free radicals, as well as intracellular ROS. Analysis of the phenols content at different maturity stages indicated that the unripe fruits had significantly higher polyphenols content than mature fruits. Consequently, unripe fruits possessed higher antioxidant activities. According to the overall results of the extraction process optimization, the selected optimal conditions for extracting polyphenols from RSM were as follows: extraction time, 95 min; solvent concentration, 60%; ratio of sample to solvent, 1:25.

scholarly journals Study on the Electrical Injection Regeneration of Industrialized B-Doped Czochralski Silicon PERC Solar Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Jiaxing Ye ◽  
Bin Ai ◽  
Jingsheng Jin ◽  
Depeng Qiu ◽  
Runxiong Liang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Processing Time ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Degradation Process ◽  
Open Circuit ◽  
Injection Current ◽  
Processing Temperature ◽  
Czochralski Silicon ◽  
Electrical Injection

In this paper, 156 mm×156 mm boron-doped Czochralski silicon (Cz-Si) wafers were fabricated into PERC solar cells by using the industrial standard process; then, the as-prepared PERC solar cells were treated by the regeneration process using electrical injection and heating and the effects of different regeneration processes (temperature, time, and injection current) on the anti-light-induced degradation (anti-LID) performance of the PERC solar cells were investigated. The results show that under the condition of 10 A injection current and 30 min processing time, the optimal processing temperature is about 180°C for PERC solar cells to obtain the best anti-LID performance. Under the conditions of a temperature of 180°C, an injection current of 10 A, and a processing time of 0-30 min, the anti-LID performance of the PERC solar cells is enhanced with the increase in the processing time. When the processing time is 20 and 30 min, the efficiency, the short-circuit current, and the open-circuit voltage of the processed PERC solar cells are slightly higher than the initial values before the regeneration and remain stable in the subsequent 12-hour light degradation process at 45°C and 1-sun illumination. At a temperature of 180°C and a processing time of 30 min, the injection current of 6 A is enough to obtain a good regeneration effect, but the optimal injection current is around 10 A.

Characterizations of Removal Rate and Temperature in the Inductively Coupled Plasma Etching of Silicon Carbide

2016 ◽  
Vol 679 ◽  
pp. 85-90
Author(s):  
Na Li ◽  
Peng Zhang ◽  
Qiang Xin ◽  
Jiang Jin ◽  
Bo Wang
Keyword(s):  
Silicon Carbide ◽  
Inductively Coupled Plasma ◽  
Processing Time ◽  
Removal Rate ◽  
Influence Factors ◽  
High Hardness ◽  
Input Power ◽  
Processing Temperature ◽  
Space Applications ◽  
Inductively Coupled

Silicon carbide (SiC) is widely used in terrestrial and space applications because of its good mechanical, thermal and optical properties. Nevertheless, traditional grinding and polishing technologies cannot meet the machining requirements due to the high hardness and brittleness. In this paper, Inductively Coupled Plasma (ICP) is utilized to process the SiC optics. The effects of different processing recipes on the removal rate and temperature are investigated. The results show that the removal rate almost keeps stable with processing time and changes with the flow rate of plasma gas, reaction gas, the ratio of CF4/O2 and the power. The input power and processing time are the two main influence factors on the processing temperature.

From time to time: Processing time reference violations in Dutch

2012 ◽  
Vol 66 (1) ◽  
pp. 307-325 ◽  
Author(s):  
Olga Dragoy ◽  
Laurie A. Stowe ◽  
Laura S. Bos ◽  
Roelien Bastiaanse
Keyword(s):  
Processing Time ◽  
Time Processing

Application of ANN in Preparing Technology of Magnesium Matrix Composites

2011 ◽  
Vol 216 ◽  
pp. 244-249
Author(s):  
Jian Xiong Ye ◽  
Fa Yun Zhang
Keyword(s):  
Traditional Method ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Processing Parameters ◽  
Processing Temperature ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Orthogonal Experiment Design ◽  
Magnesium Matrix Composites ◽  
Stirring Time

SiCp/AZ61 matrix composites were fabricated by stirring process in the paper. Different SiC volume fractions, processing temperature and stirring time have different influence on tensile strength and elongation of SiC; it is very difficult to find out the best processing parameters with traditional method. An effective method is demonstrated here: The orthogonal experiment design method is put into use at first, and then a satisfied ANN(Artificial Neural Network) is achieved by help of GA’s(Genetic Algorithm) global optimizing capacity. Experimental results proved the prediction accuracy and the adaptability of our work.

Fe Nano-Films Processed by Ammonia for the Catalyzed Growth of Aligned Carbon Nanotube Arrays

2011 ◽  
Vol 332-334 ◽  
pp. 1967-1973
Author(s):  
Yong Zhao ◽  
Xian Chen ◽  
Shuo Hou ◽  
Zai Kai Du ◽  
Guang Yang Mo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Processing Time ◽  
Metal Vapor ◽  
Vacuum Arc ◽  
Nanotube Arrays ◽  
Processing Temperature ◽  
Analysis Software ◽  
Carbon Nanotube Arrays ◽  
Cnt Arrays ◽  
Si Wafer

Fe nano-films deposited on pure Si wafer by metal vapor vacuum arc (MEVVA) ion deposition system were annealed in hydrogen and then treated by ammonia at 750 °C for the catalyzed growth of aligned carbon nanotube (CNT) arrays. Influence of ammonia on the microstructures of Fe nano-films was analyzed by a field emission scanning electron microscopy (FESEM) and image analysis software. The microstructures of the post-processed Fe nano-films were found depending on the processing time of ammonia and the film thickness. Comparing the growth results of CNTs from 10 nm Fe films, we found that when the processing temperature was 750 °C, the optimum processing time of ammonia was about 10 to 12 min for 10 nm Fe films to catalyze the growth of aligned CNT arrays.

Embedded Digital Oscilloscope Based on STM32 and μC/OS-II

2012 ◽  
Vol 190-191 ◽  
pp. 1129-1135 ◽  
Author(s):  
Jian Shi ◽  
Mian Guo
Keyword(s):  
Real Time ◽  
Contact Surface ◽  
Design Method ◽  
Input Voltage ◽  
Sampling Frequency ◽  
Real Time Processing ◽  
Time Processing ◽  
Digital Oscilloscope ◽  
Data Buffer ◽  
Machine Interaction

This paper introduces one design method of embedded digital oscilloscope based on STM32 and μC/OS-II. The hardware adopts STM32 and the custom data buffer to realize the 2 channel data synchronizations. The software uses the μC/OS-II platform to realize the multi-duty movement and the real-time processing. The test indicates that this embedded digital oscilloscope supports 2 channel inputs and the sampling frequency scope is 25Hz to 10MHz. Its input voltage is -3.6 V to +3.6 V and it has good man-machine interaction contact surface.

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