Changchun, China


Changchun, China

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Tian L.M.,JilinUniversity | Wang Y.C.,JilinUniversity | Gao Z.H.,JilinUniversity | Bu Z.G.,Wuxi Fuel Injection Equipment Research Institute | Ren L.Q.,JilinUniversity
Applied Mechanics and Materials | Year: 2014

Some living creatures have special structures on their body surfaces, such as smooth and elastic epidermis with subcutaneous tissue having non-smooth structures under certain conditions. The elastic epidermis coupled with non-smooth structures has a special function called bio-coupling functional surface. Imitating this functional surface and applying it in engineering has a potential to solve some engineering problems. Based on the simulation method of fluid-structure interaction (FSI), simulation calculation of the bionic functional surface coupled by the two factors, form and flexible materials was conduct using ADINA software. A viscous and weakly compressible transient flow was selected as a working medium, a discrete solver was selected in numerical calculation and the basic κ - ε model was chosen as a turbulence model. It is assumed that the coupling surface of the form/flexible materials results is large deformation and large strain. The boundary condition of fluid-structure interaction was set as the calculation surface. The simulation results showed that this coupling is a dynamic process, in which the two factors (form and flexible materials) are influenced by the flow field. As the pressure and velocity of the flow field increase, the coupling process changes from partial coupling to complete coupling, the pressure drag decreased due to the maximum effective stress of bionic coupling surface is very small and the smooth and flexible materials can redistribute pressure by absorbing and releasing energy, the pressure drag thus formed is decreased. Moreover, non-smooth structures (form factor) coupled with flexible materials reduced velocity of working face and minimise energy losses effectively, enabling the bionic coupling surface to reduce drag. © (2014) Trans Tech Publications, Switzerland.

Lin Z.,Longgang District Central Hospital affiliated to Zunyi MedicalCollege in Shenzhen | Gao Y.,Longgang District Central Hospital affiliated to Zunyi MedicalCollege in Shenzhen | Wu X.,Longgang District Peoples Hospital in Shenzhen | Yang L.,Longgang District Central Hospital affiliated to Zunyi MedicalCollege in Shenzhen | And 2 more authors.
BioTechnology: An Indian Journal | Year: 2013

CAD/CAM (Computer-aided design/Computer-aided manufacturing) dental implant surgical templates applied in the immediate implant surgery in esthetic area,is beneficial to acquire appropriate three-dimensional position,realize the transformation that from virtual plan to practical surgery, from traditional surgery depended on experience to digital and accurate surgery, improve predictability, accuracy and safety of the surgery. This article gives a report for application of CAD/CAM dental implant surgical templates in immediate implant surgery in esthetic area. © 2013 Trade Science Inc. - INDIA.

Liu H.,Weifang University | Xiao J.,University of Coimbra | Wang J.,Qingdao University of Science and Technology | Jian F.,Qingdao University of Science and Technology | And 2 more authors.
Advanced Materials Research | Year: 2012

Phosphorus vandium heteropolyacid sodium, H78N12NaO116P2V30, is prepared by the hydrothermal method. Cubic, Fm-3m. a =b = c = 20.022(2) Å α=β=γ= 90°. V=10680.0(17) Å3. Z=4. R1 =0.0388, wR2 =0.1200. T=298(2) K. The V atoms are linked with O atom bridge. The molecular structure is stabilized by the O-H.O and O-H.N intermolecular and intramolecular hydrogen-bond interaction. © (2012) Trans Tech Publications, Switzerland.

Han Y.,Jilin Business and Technology College | Zhao S.-J.,JilinUniversity | Jin S.-K.,JilinUniversity
Proceedings 2011 International Conference on Human Health and Biomedical Engineering, HHBE 2011 | Year: 2011

In order to expand the development of health edible functions of Acanthopanax leaves, to meet people's demand for low care wine, Acanthopanax low alcohol wine was studied. Corn without Germ and Acanthopanax leaves are main materials, using double enzyme saccharification, low-temperature fermentation technology to produce low-alcohol wine. Saccharification process conditions was optimized by orthogonal experiment. The results showed that: Liquefaction time was 50 minutes, saccharification temperature was 55 □, glucoamylase dosage was 200U / g, pH5.0, saccharification time was 80 minutes, dosage of Acanthopanax leaves was 1.5 g / L. After Low-temperature fermentation, the alcohol concentration in an average was 4.5%. The appearance of wine was slightly yellow, clear and transparent. Because of a unique flavor and bitterness, no odor, and immune function, anti - fatigue, treatment of insomnia and so on, Acanthopanax low health wine has broad market and prospects. © 2011 IEEE.

Yu D.N.,JilinUniversity | Shao C.M.,JilinUniversity | Han L.,China First Automobile Works Group Corporation | Zhang B.Y.,JilinUniversity | Zhou L.Y.,JilinUniversity
Advanced Materials Research | Year: 2014

A trunk lid plate is taken as an example and Fiberglass-reinforced PET material is used to replace steel for weight-saving in this paper. Chooseinjection molding as plate's forming methodto find the optimal parameters in given range. To predict plastic parts' warpage under different injection parameters and find the optimal parameters, the method of Artificial Neural Network (ANN) is used. © (2014) Trans Tech Publications, Switzerland.

Li T.,University of Science and Technology Beijing | Zou Y.,JilinUniversity | Jiang S.,University of Science and Technology Beijing
Applied Mechanics and Materials | Year: 2012

A novel mesoporous composite water purification material was synthesized from natural zeolite to possess certain water purification properties as well as in proper particle size range for optimal fluid flow, particle retention and mass transfer in fixed bed applications. The meerschaum was used as the framework material in the experimental manufacturing procedure, polyethylene alcohol with carboxylic methylic cellulose was used as cohesive reagent, and H2O2 as bubble-forming agent. And the resulted granular product has good abrasion resistance ability with the measured impact breaking time reaching 12 hours. In addition, its decoloring rate is only 4. 4% lower and its CODcr removing is only 13. 2% lower than those of the original powder product, respectively. As a whole, the granulation potential and significantly expands the zeolite wastewater treatment application range with (only is not necessary) minor reduction of its treatment efficiency. © (2012) Trans Tech Publications, Switzerland.

Wang J.,JilinUniversity | Xue L.,JilinUniversity | Zhang J.,JilinUniversity | Yang G.,JilinUniversity
2010 2nd Conference on Environmental Science and Information Application Technology, ESIAT 2010 | Year: 2010

Changling fault depression goes through three stages of evolution:faulted phase period,depression period and phase inversion period.The fault rised whole and the formation generated erosion at late Yingcheng group,late Nenjiang group and late Mingshui group. In this paper, based on seismic and drilling data,8 wells located in the study area are calculated by denudation thickness.On this basis, we make use of inversion backstripping technology, through compaction correction, to restore the original thickness of sedimentary step by step, we carried on the single well burial history reconstruction to 8 wells and restored their tectonic subsidence history, the result demonstrates that fault depression has experienced four subsidence and three upliftings: It has the characteristic which is the fast subsidence, the fast deposition and the fast burial in shahezi fm - yingcheng fm period, the uplifting suffers the denudation in late yingcheng fm; Denglou fm - nenjiang fm period has the characteristics of the fast subsidence, deposits and burial, the late nenjiang fm shows uplift-erosion; The sifangtai fm and the mingshui fm show fast subsidence, burial, reverse movement causes the stratum uplift-erosion in late mingshui fm; In the paleogene- neogene, the overall characteristic is the slow upuplifting, and then is the slow drop, the slow deposition, the slow burial. ©2010 IEEE.

PubMed | JilinUniversity
Type: Journal Article | Journal: IEEE transactions on bio-medical engineering | Year: 2011

Knee-joint kinematics analysis using an optimal sensor set and a reliable algorithm would be useful in the gait analysis. An original approach for ambulatory estimation of knee-joint angles in anatomical coordinate system is presented, which is composed of a physical-sensor-difference-based algorithm and virtual-sensor-difference-based algorithm. To test the approach, a wearable monitoring system composed of accelerometers and magnetometers was developed and evaluated on lower limb. The flexion/extension (f/e), abduction/adduction (a/a), and inversion/extension (i/e) rotation angles of the knee joint in the anatomical joint coordinate system were estimated. In this method, since there is no integration of angular acceleration or angular velocity, the result is not distorted by offset and drift. The three knee-joint angles within the anatomical coordinate system are independent of the orders, which must be considered when Euler angles are used. Besides, since there are no physical sensors implanted in the knee joint based on the virtual-sensor-difference-based algorithm, it is feasible to analyze knee-joint kinematics with less numbers and types of sensors than those mentioned in some others methods. Compared with results from the reference system, the developed wearable sensor system is available to do gait analysis with fewer sensors and high degree of accuracy.

PubMed | JilinUniversity
Type: Journal Article | Journal: Optics letters | Year: 2010

Electro-optic probing of electric fields has been considered as a promising approach for integrated circuit diagnosis. However, the method is subject to relatively weak voltage sensitivity. In this Letter, we solve the problems with electro-acoustic effect. In contrast to the general electro-optic effect, the light phase modulation induced by the acoustic effect is 2 orders of magnitude stronger at its resonant frequency, as we observed in a GaAs thin film probe. Furthermore, this what we believe to be a novel method shows a highly reproducible linearity between the detected signals and the input voltages, which facilitates the voltage calibration.

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