Yu Jin

Beijing University of Chemical Technology

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Co-Authors

Duli Yu

Beijing University of Chemical Technology

Haijia Su

Beijing University of Chemical Technology

Chi Xu

China University of Geosciences

Shaojie Wang

Beijing University of Chemical Technology

Wei Xiong

Dalian University of Technology

Gang Xiao

Beijing University of Chemical Technology

Jun Nie

Beijing University of Chemical Technology

Guiping Ma

Beijing University of Chemical Technology

Dongzhi Yang

Beijing University of Chemical Technology

Dae Sung Park

Ministry of Health and Welfare

Cooperative Institutions

Beijing University of Chemical Technology

Chinese Academy of Sciences

Chonnam National University

Chonnam National University Hospital

Ministry of Health and Welfare

Peking University

Gwangju Institute of Science and Technology

Jangsung (South Korea)

Tsinghua University

University of Chinese Academy of Sciences

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In Situ Mineralization of Hydroxyapatite on Electrospun Chitosan‐Based Nanofibrous Scaffolds

Macromolecular Bioscience (2008)

Dongzhi Yang Yu Jin Yingshan Zhou Guiping Ma Xiangmei Chen

A biocomposite of hydroxyapatite (HAp) with electrospun nanofibrous scaffolds was prepared by using chitosan/polyvinyl alcohol (CS/PVA) and N-carboxyethyl chitosan/PVA (CECS/PVA) electrospun membranes as organic matrix, and HAp was formed in supersaturated CaCl2 and KH2PO4 solution. The influences of carboxylic acid groups in CECS/PVA fibrous scaffold and polyanionic additive poly(acrylic acid) (PAA) in the incubation solution on the crystal distribution of the HAp were investigated. Field-emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS), wide-angle X-ray diffraction (WAXD), and Fourier transform infrared (FTIR) were used to characterize the morphology and structure of the deposited mineral phase on the scaffolds. It was found that addition of PAA to the mineral solution and use of matrix with carboxylic acid groups promoted mineral growth and distribution of HAp. MTT testing and SEM imaging from mouse fibroblast (L929) cell culture revealed the attachment and growth of mouse fibroblast on the surface of biocomposite scaffold, and that the cell morphology and viability were satisfactory for the composite to be used in bioapplications.

Biocomposite

Polyvinyl Alcohol

Acrylic acid

Electrospinning

Polyacrylic acid

10.1002/mabi.200700221

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Citations (91)

Enhancing nitrogen removal performance using immobilized aerobic denitrifying bacteria by modified polyvinyl alcohol/sodium alginate (PVA/SA)

Chemosphere (2024)

Yu Jin Dan Liu Wei Xiong Zhiqing Wu Gang Xiao

Polyvinyl Alcohol

Sodium alginate

10.1016/j.chemosphere.2024.141954

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Citations (4)

An Ultra-High Linear Digitization Temperature Sensor Based on SAR ADC With Common-Mode Temperature Drift Suppression

IEEE Transactions on Circuits & Systems II Express Briefs (2023)

Hang Liu Yuying Li Haoyuan Shen Bo Wu Yu Jin

A BJT-based CMOS temperature sensor with an extremely wide temperature range is presented. A voltage mode read-out circuit structure based on common-mode temperature drift suppression technique is proposed to reduce the error caused by the high temperature drift of the read-out circuit in the CMOS process. By analyzing the ratiometric measurement scheme of the temperature sensor, a high sensitivity and high linearity common-mode temperature suppression structure is proposed to ensure the regular operation of the read-out circuit. It makes the structure more robust and expandable, and is suitable for the voltage domain temperature sensor read-out systems. The prototype of the sensor, implemented in a 180nm CMOS process, shows a measured inaccuracy within ±1°C (

$3\sigma$

) from −40°C to 175°C with 1-point calibration and temperature sensing ultra-linearity

$R^{2}$

is more significant than 0.99. It occupies a die area of 0.42mm2 and consumes 0.3 mW with a medium resolution 12 bit and a fast conversion time of

$10 ~\mu \text{s}$

Digitization

Successive approximation ADC

Mode (computer interface)

10.1109/tcsii.2023.3316013

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Citations (2)

A Temperature-Drift Suppressed Charge Pump for CPPLL Applied in MEMS Oscillator

Junyi Wang Yu Jin Quan Yuan

In the extreme working environment such as aerospace, PLL applied in microelectromechanical systems (MEMS) oscillator need a temperature-stable operating state which keeps overall electronic system in working. However, a key unit of PLL to maintain its performance is an invulnerable charge pump (CP) structure in wide temperature range. However, the working current of the CP in charge pump phase-locked loop (CPPLL) becomes unstable with the change of temperature and deteriorates the stray performance and interferes with the locking function. To stabilize the current output of the CP at different temperatures and to guarantee the stray performance of the system, in new CP structure proposed in this paper, the current of the CP is compensated and the current matching is enhanced by introducing a temperature compensation circuit. The circuit simulation result based on 180nm CMOS technology show that the output current of the pump can be basically stable at 100μA in the range of -40~175°C, the temperature coefficient of the current is 16.43ppm/°C, the matching range of the current is 0.4~3.1V, and the loss ratio is less than 0.5%.

Atmospheric temperature range

10.1109/icetci57876.2023.10177001

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Citations (1)

Preparation and characterization of chitosan/poly(vinyl alcohol)/poly(vinyl pyrrolidone) electrospun fibers

Frontiers of Materials Science in China (2007)

Guiping Ma Dongzhi Yang Yingshan Zhou Yu Jin Jun Nie

Vinyl alcohol

Characterization

Vinyl ester

Electrospinning

10.1007/s11706-007-0079-9

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Citations (13)

A design of LQG controller for high performance MEMS accelerometer

Chi Xu Yu Jin Xin Wang Duli Yu

This paper presents a novel design structure of a closed-loop Sigma-Delta modulator using a Linear-Quadratic-Gaussian (LQG) controller, which can reduce the influence of possible dispersions of the sensing element and offset the effect of the external disturbance. Specifically, a Kalman state estimator is employed to estimate the system state of Sigma-Delta modulator, and the LQG controller is designed based on the theory of linear quadratic optimal control with the estimated state. The LQG controller with the Kalman state estimator can maintain the proof mass near its position of equilibrium, which makes it possible to enhance the performance of the MEMS accelerometers. Experimental results from the proposed architecture shows an increase of more than 5X improved in signal quantization noise ratio compared to the pure closed-loop Sigma-Delta modulator, and also the proposed Sigma-Delta modulator with the LQG controller improves the performance of disturbance attenuation and system robustness.

Optimal projection equations

10.1109/ccdc.2019.8832389

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Citations (1)

Novel insights into the biological state in algal-bacterial granular sludge granulation: Armor-like protection provided by the algal barrier

Water Research (2024)

Wei Xiong Yu Jin Yaoqiang Wang Shaojie Wang Biqiang Chen

Granulation

Armour

10.1016/j.watres.2024.122087

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Citations (7)

A Lightweight XOR-PUF Structure for Resource Constrained Smart Device

2022 IEEE 11th Global Conference on Consumer Electronics (GCCE) (2019)

Huan Li Yu Jin Han Kedu Duli Yu

Physical unclonable function(PUF) circuits provide unique, random and unclonable secret keys by extracting random process deviations in the manufacturing process of integrated circuits. Many efforts has been devoted in recent years to make PUF structure more vulnerable to external modelling attacks. For instance, as a strong PUF structure, several same arbiter-PUFs circuits are duplicated and combined with XOR to introduce extra nonlinearity to the response sequence. Although XORPUF improves the unpredictability of the circuit, however, over the 6 duplications and corresponding area overheads are needed for low prediction rate around 50%. In this paper, an advanced PUF circuit which employs XORPUF structure with less area overheads is proposed and established on 28nm FPGA evaluation board. The machine learning attack results to the proposed PUF structured demonstrate the improvement in the attack resistance, as well as the uniqueness and reliability of the response sequence.

Physical unclonable function

Sequence (biology)

10.1109/gcce46687.2019.9015230

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Citations (4)

In Vitro Model on Glass Surfaces for Complex Interactions between Different Types of Cells

Langmuir (2010)

Zhenling Chen Wei Chen Bo Yuan Le Xiao Dingbin Liu

This report establishes an in vitro model on glass surfaces for patterning multiple types of cells to simulate cell−cell interactions in vivo. The model employs a microfluidic system and poly(ethylene glycol)-terminated oxysilane (PEG-oxysilane) to modify glass surfaces in order to resist cell adhesion. The system allows the selective confinement of different types of cells to realize complete confinement, partial confinement, and no confinement of three types of cells on glass surfaces. The model was applied to study intercellular interactions among human umbilical vein endothelial cells (HUVEC), PLA 801 C and PLA801 D cells.

10.1021/la103132m

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Citations (35)

Cover Feature: A Light‐Dark Cascade Procedure for the Regeneration of NADH using Graphitic Carbon Nitride Nanosheets (ChemPhotoChem 8/2022)

ChemPhotoChem (2022)

Yaoqiang Wang Yu Jin Zishuai Wang Gang Xiao Haijia Su

The Cover Feature illustrates the catalytic decomposition of triethanolamine to formate and glycolaldehyde by g-C3N4 nanosheets under light. Glycoaldehyde then reduced NAD+ to NADH in the dark. More information can be found in the Research Article by Gang Xiao, Haijia Su and co-workers.

Triethanolamine

Graphitic carbon nitride

Carbon nitride

Glycolaldehyde

10.1002/cptc.202200207

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Citations (0)