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Microalgae wet extraction using N-ethyl butylamine for fatty acid production

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Green Energy & Environment 2016年第1期1卷 79-83页

作者： Ying Du Boelo Schuur Sascha R.A.Kersten Derk W.F.Brilman University of Twente Sustainable Process Technology Group(SPT)Faculty of Science and Technology

Microalgae are considered a promising feedstock for the production of food ingredients, cosmetics, pharmaceutical products and *** energy intensity of drying and cell breaking of algae and solvent recovery afterwards hindered the route of algae biorefinery. In this work the influences of freeze drying and cell breaking to the extraction efficiency of crude lipid yield and fatty acid yield were investigated. Results showed that drying and cell breaking are not necessary for N-ethyl butylamine extraction, because good yields were obtained without. Crude lipid yield and fatty acid yield using N-ethyl butylamine were comparable with Bligh & Dyer extraction, making N-ethyl butylamine a candidate for further development of an energy efficient lipid extraction technology for non-broken microalgae.

关键词： Microalgae Lipids Extraction Switchable solvent Secondary amine

Dynamic response of armor-piercing bullets to blunt and penetration with protective gelatin

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Theoretical & Applied Mechanics Letters 2024年第4期14卷 270-279页

作者： Rui Yuan Yaoke Wen Weixiao Nie Dongxu Liu Zhouyu Shen Haoran Xu School of Mechanical Engineering Nanjing University of Science&TechnologyNanjing 210094China Research and development Center Liaoshen Industrial Group Co.Ltd.Shenyang 110045China

To investigate the coupled damage mechanism of blunt impact and bullets penetration after penetrating ballistic plates against human body targets,experiments were conducted using 6.8 mm caliber armor-piercing bullets against gelatin targets with protective coatings.A numerical analysis model was developed to simulate bullet penetration into gelatin with protective coatings,obtaining endpoint characteristic quantities such as bullet velocity changes,changes in energy distribution,pressure,stress,and stress wave variations within the gelatin target after *** results indicate that at a velocity of 640 m·s^(-1),the 6.8 mm caliber armor-piercing round failed to penetrate the ballistic plate yet still caused a blunt impact depression of 37 mm in *** conditions where the bullet did not penetrate the ballistic plate,approximately 80%of the bullet's kinetic energy was absorbed by the ballistic *** a velocity of 740 m·s^(-1),the bullet penetrated the ballistic plate,resulting in a blunt impact depression depth of 56 mm and an instantaneous cavity with a maximum diameter of 60 *** the process of penetrating the ballistic plate,approximately 50%of the bullet's kinetic energy was absorbed by the ballistic plate,and about 40%of the remaining kinetic energy transferred into the gelatin during the penetration of the target.

关键词： Armor-piercing bullet Ballistic plate Ballistic gelatin Temporary cavity

Complementary research in mammals and fish indicates MMP-2 as a pleiotropic contributor to optic nerve regeneration

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Neural Regeneration Research 2016年第5期11卷 740-742页

作者： Kim Lemmens Inge Van Hove Lieve Moons Neural Circuit development and Regeneration Research group Department of BiologyKU Leuven

Matrix metalloproteinases（MMPs）are members of the metzincin superfamily named after the zinc ion and the conserved methionine residue at the active *** addition to their role in extracellular matrix（ECM）remodeling... 详细信息

关键词： MMP Complementary research in mammals and fish indicates MMP-2 as a pleiotropic contributor to optic nerve regeneration MMPs

A 430 mW 16 b 170 MS/s CMOS pipelined ADC with 77.2 dB SNR and 97.6 dB SFDR

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Journal of Semiconductors 2016年第3期37卷 88-94页

作者：张辉李丹万磊张辉王海军高远朱腓利王紫琪丁学欣 ADC Products development group Shanghai Belling Co.Ltd

A 16-bit 170 MS/s pipelined ADC implemented in 0.18 m CMOS process is presented in this paper. An improved digital calibration method and a linearized sampling front-end are employed to achieve a high SFDR. The enlarged full scale range makes it possible to obtain a high SNR with smaller sampling capacitors, thus achieving higher speed and low power. This ADC attains an SNR of 77.2 d BFS, an SFDR of 97.6 d Bc for a 10 MHz input signal, while preserving an SFDR 〉 80 d Bc up to 300 MHz input frequency. The ADC consumes 430 mW from a1.8 V supply and occupies a 17 mm^2 active area.

关键词： pipelined ADC calibration SHA-less IF sampling

Robotics in Industry-Their Role in Intelligent Manufacturing

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Engineering 2018年第4期4卷 440-445页

作者： Chia-Peng Day Foxconn technology group Shenzhen 518110 China

1. A view of intelligent manufacturing 1.1. Intelligent manufacturing： The coupling of technology and industrialization A perspective on intelligent manufacturing can be gained by examining the development stages of modern industrial manufacturing . The use of steam engines as prime movers around 1784 marked an essential step of the First Industrial Revolution （Fig.1 ）, although an early crude form of the steam engine was invented 50 years earlier by Thomas Newcomen.

关键词：智能制造现代工业发展现状技术创新

Reliability Prediction Method Based on State Space Model for Rolling Element Bearing

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Journal of Shanghai Jiaotong university(Science) 2015年第3期20卷 317-321页

作者：李宏坤张志新李秀刚任远杰 Dalian Xinyu Science technology development Center Co. Ltd. School of Mechanical Engineering Dalian University Shenyang Blower Works group Corporation

Reliability analysis based on equipment's performance degradation characteristics is one of the significant research areas in reliability research. Nowadays, many researches are carried on multi-sample analysis. But it is limited for a single equipment reliability prediction. Therefore, the method of reliability prediction based on state space model(SSM) is proposed in this research. Feature energy of the monitored signals is extracted with the wavelet packet analysis and the associated frequency band energy with online monitored data. Then,degradation feature is improved by moving average filtering processing taken as input pair model parameter of SSM to be estimated. In the end, state space predicting model of degradation index is established. The probability density distribution of the degradation index is predicted, and the degree of reliability is calculated. A real testing example of bearing is used to demonstrate the rationality and effectiveness of this method. It is a useful method for single sample reliability prediction.

关键词： reliability prediction state space model feature extraction wavelet analysis moving average

Ripple-effect analysis for operational architecture of air defense systems with supernetwork modeling

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Journal of Systems Engineering and Electronics 2014年第2期25卷 249-264页

作者： Zhigang Zou Fuxian Liu Shiman Sun Lu Xia Chengli Fan School of Air and Missile Defense Air Force Engineering University Research & development Center China Airport Construction Group Corporation

In order to solve the problem that the ripple-effect analy- sis for the operational architecture of air defense systems （OAADS） is hardly described in quantity with previous modeling approaches, a supernetwork modeling approach for the OAADS is put for- ward by extending granular computing. Based on that operational units and links are equal to different information granularities, the supernetwork framework of the OAADS is constructed as a “four- network within two-layer” structure by forming dynamic operating coalitions, and measuring indexes of the ripple-effect analysis for the OAADS are given combining with Laplace spectral radius. In this framework, via analyzing multidimensional attributes which inherit relations between operational units in different granular scales, an extended granular computing is put forward integrating with a topological structure. Then the operation process within the supernetwork framework, including transformation relations be- tween two layers in the vertical view and mapping relations among functional networks in the horizontal view, is studied in quantity. As the application case shows, comparing with previous modeling approaches, the supernetwork model can validate and analyze the operation mechanism in the air defense architecture, and the ripple-effect analysis can be used to confirm the key operational unit with micro and macro viewpoints.

关键词： operational architecture air defense system super-network model Laplace spectral radius ripple-effect analysis.

The Recent Technological development of Intelligent Mining in China

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Engineering 2017年第4期3卷 439-444页

作者： Jinhua Wang Zenghua Huang China Coal technology and Engineering group Beijing 100013 China

In the last five years, China has seen the technological development of intelligent mining and the application of the longwall automation technology developed by the Longwall Automation Steering Committee. This paper summarizes this great achievement, which occurred during the 12th Five-Year Plan （2011-2015）, and which included the development of a set of intelligent equipment for hydraulic-powered supports, information transfers, dynamic decision-making, performance coordination, and the achievement of a high level of reliability despite difficult conditions. Within China, the intelligent system of a set of hydraulic-powered supports was completed, with our own intellectual property rights. An intelligent mining model was developed that permitted unmanned operation and single-person inspection on the work face. With these technologies, the number of miners on the work face can now be significantly reduced. Miners are only required to monitor mining machines on the roadway or at the surface control center, since intelligent mining can be applied to extract middle-thick or thick coal seams. As a result, miners＇ safety has been improved. Finally, this Darter discusses theprospects and challenges of intelligent mining over the next ten years.

关键词： Coal mineIntelligent mining Mechanized mining work face Longwall Automation Steering CommitteeIntelligent service center

Feature context learning for human parsing

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Science China(Information Sciences) 2019年第12期62卷 6-19页

作者： Tengteng HUANG Yongchao XU Song BAI Yongpan WANG Xiang BAI School of Electronic Information and Communications Huazhong University of Science and Technology Alibaba group

Parsing inconsistency, referring to the scatters and speckles in the parsing results as well as imprecise contours, is a long-standing problem in human parsing. It results from the fact that the pixel-wise classification loss independently considers each pixel. To address the inconsistency issue, we propose in this paper an end-to-end trainable, highly flexible and generic module called feature context module(FCM).FCM explores the correlation of adjacent pixels and aggregates the contextual information embedded in the real topology of the human body. Therefore, the feature representations are enhanced and thus quite robust in distinguishing semantically related parts. Extensive experiments are done with three different backbone models and four benchmark datasets, suggesting that FCM can be an effective and efficient plug-in to consistently improve the performance of existing algorithms without sacrificing the inference speed too much.

关键词： human parsing context learning fully convolutional networks graph convolutional network semantic segmentation