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Abstract: The effects of processing variables,such as screw speed,initial moisture content and the length ofthe straw plug pipe of extrusion process on the dewatering rate,handling capacity,output per kW h etc.were experimentally studied using a low CR screw straw extruder. And the response surface optimization exper-imental results showed the extruder can run efficiently,stably and continuously with considerate dewateringrate,handling capacity and output per kW ·h under the conditions that moisture content is 85% ,screw speed50.8 r/min,length of the straw plug pipe is 26.91 mm.

Abstract: The cellulosic ethanol wastewater was first treated by anaerobic digestion ( methane fermentation),and then the anaerobic digestion liquid was used as burden water on cellulosic ethanol fermentation,so that re-use of cellulosic ethanol wastewater could be realized. The small molecule organic acids in the anaerobic efflu-ent,mainly formic acid,acetic acid and propanoic acid,were potential inhibitors of ethanol fermentation. Theeffects of organic acids on enzymatic hydrolysis and yeast fermentation of cellulose were studied. The resultsshowed that the potential inhibitory effects of formic acid,acetic acid and propanoic acid on enzymatic hydrol-ysis could be avoided by controlling the medium pH.The inhibitory concentrations of formic acid,acetic acidand propanoic acid on yeast fermentation were 1.6,3.0 and 3.0 g/L,respectively.

Abstract: This paper establishes a metal-free catalytic system comprising 2,2,6,6-etramethylpiperidine-l-ox-yl(TEMPO),NaClO and NaBr,catalytic oxidation of cyclohexanol to cyclohexanone. This paper studies theeffects of reaction time,pH,the dosage of the catalysts and solvent and so on. The optimum reaction condi-tions are as follows: cyclohexanol 0.3 g,TEMPO 0.005 g,NaBr 0.03 g,NaCIO 0.45 g,CH Cl,7 mL,pH9.1 and the reaction time 1 h.Three parallel experiments were performed under this condition,the averageconversition of cyclohexanol was 88.2%,and the average yield of cyclohexanone could reach 87.3%.

Abstract: The influence of casting temperature,holding time and cooling rate on Al-3Ti-0.2C-5Sr alloy mi-crostructure,and the solidification processes were studied by DSC analysis and liquid quenching experiments.The results show that,Al-3Ti-0.2C5Sr grain refiner is composed of TiAl, phase,Al-Ti-Sr phase,TiC phaseand small amounts of Al,Sr phase. With the increase of casting temperature,strip TiAl; phases in the alloygradually transforms into massive,and the coated Al-Ti-Sr phases can change into block Al-Ti-Sr phases.With the decreasing cooling rate,size of TiAl, decreases the coated Al-Ti-Sr phases thickens. With the in-crease of the holding time,TiAl, phase gradually disappears, and the coated Al-Ti-Sr phases become big blockphases. Liquid-solid temperature range of Al-3Ti-0.2C-5Sr grain refiner is 800 ~ 640 ℃,precipitation se-quence of phases is TiAl, phases,Al-Ti-Sr phases,Al,Sr phases and o-Al.

Abstract: Molybdenum disulfide ( MoS2 ) with a typical layered structure easily forms few-layered MoS2 nanosheets，and has a wealth of optical，electrical and catalytic performance with wide application potentials in areas such as photo-electrical and energy conversion． The preparation of few-layered MoS2 nanocrystals and MoS2-based nanocomposites using molybdenum-containing chemicals as starting materials by wet-chemical and vapor-deposition methods are the cutting-edge focuses of recent research． However，the synthesis of MoS2 nanocrystals from chemical reagents with a long route is not low-carbon and environment friendly． Molybdenite is a typical layered mineral and composed of layered MoS2 units． The amount of molybdenite in China is huge and it is a green and low-carbon way to prepare few-layered MoS2 nanomaterials via the intercalation-exfoliation strategy using the purified molybdenite as the direct raw materials．

Abstract: Surface ion-imprinted poly( allylamine) -silica material ( IIP-PAA/SiO,) was synthesized by physi-cal load and surface imprinting technique. The thermodynamics，kinetics and selectivity of Cu( II) adsorptionon lIPPAA/SiO, were studied by static methods. The results showed that the adsorption capacity and selectiv-ity of lIP-PAA/SiO,decreased with the increase of the temperature. lIts adsorption equilibrium data for Cu( I)could be fit well by the Langmuir model. ’The adsorption thermodynamic parameters calculated showed that itsenthalpy change H° was - 12.29 kJ·moL"’ and △Gwas among - 16.5 kJ· moL’and - 17.05 kJ·moL"’, which indicated that the adsorption was exothermic spontaneous process and increasing temperaturewas not conducive to Cu( l) adsorption. Adsorption kinetics data of Cu( lI) on llP-PAA/SiO,could be de-scribed by pseudo-second-order kinetics equation，and the fitting adsorption rate constant and balanced copperadsorption capacity were related to initial solution concentration.

Abstract: Fe-Co composited nanoparticles were synthesized by using apoferritin as a biological template ,Co(NO3)2·6H,0,Fe(NH4)2( SO4)2·6H,0 and NaBH, as the reactants.The prepared nanoparticles werefurther characterized by TEM,EDS and UV-visble spectroscopy. Experimental results show that iron-cobaltcomposite nanoparticles that use apoferritin as a biological template for the preparation are amorphous non-crystalline and highly monodisperse. They are about 5 ~ 7 nm in diameter and the distribution of their particlesize is relatively uniform. The result of the study is a further indication that the apoferritin is a good templatefor preparing nanomaterials.

Abstract:  In order for effective application of Multi-Objective Evolutionary Algorithm based on Decomposition(MOEA/D) in engineering optimization，normalization of the range of objective values is needed. A self-a-daptive s constrained Differential Evolution ( gDE) algorithm is proposed to obtain the minimum and maximumvalues of each objective on the Pareto Front ( PF). After normalization，MOEA/D can then be effectively ap-plied. In addition ,the self-adaptive s constraint method is combined with MOEA/D for constraint handling. Abenchmark problem and a weld bean design problem are used to evaluate the performance of the algorithm a-gainst two other normalization methods. One main advantage of the proposed method is the selective concen-trated optimization on some regions on the Pareto front which allows handling of problems where regions of Pa-reto front are difficult to be optimized.

Abstract: A novel approach to construct accurate and interpretable fuzzy classification system based on fire-works optimization algorithm(FOA) combined with differential evolution operators is proposed.It is the firsttime to apply FOA in fuzzy modeling.The fireworks optimization algorithm is a novel swarm intelligent algo-rithm based on simulating the explosion process of fireworks,which can optimize the construction and parame-ters of fuzzy system with good convergence speed and optimization accuracy.To improve the diversity of theswarm and avoid being trapped in local optima too early ,the differential evolution is performed to further opti-mize the model at each iteration.The proposed approach is applied to the lris benchmark classification prob-lem,and the results prove its validity.

Abstract: In view of the disadvantages of the traditional Fuzny C-means clustering algorithm,the author pro-poses an adaptive FCM algorithm.This algorithm is based on two clustering results evaluation index of withinthe class distance MIA and between the class distance MDC.The ratio of MDC and MIA,defined as l,is anadaptive function to determine the clustering number c of FCM algorithm. At the same time,according to thefuzzy decision method,we use the objective function and partition entropy of FCM algorithm together to deter-mine the value of optimal fuzzy weighted m.This algorithm not only overcomes the FCM algorithm disadvan-tage of not being able to determine the clustering number automatically and fuzzy weighted index needs to begiven by experience,but also the clustering result is optimal.Finally,the correctness and effectiveness of thealgorithm were proved through example analysis.

Abstract: In view of the disadvantages of the traditional Fuy C-means clustering algorithm， the author pro-poses an adaptive FCM algorithm. This algorithm is based on two clustering results evaluation index of withinthe class distance MIA and between the class distance MDC. The ratio of MDC and MIA，defined as l, is anadaptive function to determine the clustering number c of FCM algorithm. At the same time，according to thefuzy decision method，we use the objective function and partition entropy of FCM algorithm together to deter-mine the value of optimal fuzzy weighted m. ’This algorithm not only overcomes the FCM algorithm disadvan-tage of not being able to determine the clustering number automatically and fuzzy weighted index needs to begiven by experience,but also the clustering result is optimal. Finally,the correctness and effectiveness of thealgorithm were proved through example analysis.

Abstract: For the modeling and control of proton exchange membrane fuel cells, the empirical model and mechanism model based on polarization curve and parameter dimension are summarized, the electrochemical steady-state model and dynamic model based on electrochemical reaction, temperature, pressure and other factors are analyzed, and the intelligent method model based on neural network identification, swarm intelligence algorithm and support vector machine is introduced.The existing intelligent control strategies of proton exchange membrane fuel cells are summarized. Finally, it is pointed out that it will be a development direction of modeling to optimize the model parameters and environmental parameters of proton exchange membrane fuel cells by using swarm intelligence algorithm. The generalized Hamilton theory can also be tried to be used in the modeling of proton exchange membrane fuel cells.At the same time, the intelligent control strategy combining the new algorithm will become the research trend of proton exchange membrane fuel cell control.

Abstract: Reactive power optimization using improved genetic algorithm is studied in this paper.A mathemat-ical model of reactive power optimization for power system is established，which treats the voltage of the gener-ator，capacity of reactive power compensation equipment，ratio of adjustable transformers as control variables,aiming at maximizing the comprehensive benefits which takes the economics and power system performance intoaccount. The proposed model takes decimal integer encoding strategy to improve the computational efficiencyfor the discrete variables in control center，applies comprehensive selection operator and adaptive crossovermutation rate to improve the convergence performance.The correctness and effectiveness of the proposed meth-od are validated by simulation results of IEEE 14-bus system for 500 times.

Abstract: In this paper,we propose methods of text line and character segmentation,which suit the charac-teristics of ancient documents and handwritten characters of China,such as longitudinal writing,overlapping,conglutination and so on.For line segmentation,a method called statistical projection filtering is proposed.Firstly,we count up the vertical projection of ancient documents,then adopt the method of loop filter to dealwith statistical results until much uniform columns are isolated.Even in some complex cases,like much noise,certain inclined and column height is not uniform,our algorithm still has good performance. The methods ofprojection,piecewise projection and segmentation of strokes features at top and bottom are applied to charactersegmentation. Finally,the context combined method are adopted to test the segmentation,then, the mistakensegmentation is adjusted.Using the idea of dichotomy,piecewise projection divide characters,where exist o-verlap and adhesion exist，into two parts,then projected respectively. After that,analyzing projection arrays,we get segmentation path. After finding the over - segmentation and under - segmentation by SM -SFTB ( thesegmentation method of strokes features at top and bottom) using the characteristics of Chinese characterstrokes,the adjustment for segmentation is possible.The experimental results show that the proposed methodshave good performance for historical Chinese documents.

Abstract: With the fluid-solid coupling method,damage model of the composite laminates under bird impact isbuilt by using the software IS-DYNA; through analyzing the dynamic response of the laminates，four stages ofthe bird impact process are verified，and spreading of the impact wave in the laminates is discussed. The pro-gressive damage process of matrix compression，matrix cracking， and fiber fracture during the bird impact is an-alyzed. The effect of different layer styles on residual energy of the bind after impact is studied,and the resultproves that properly designed layer style can improve the anti-impact capacity of the laminates effectively.

Abstract: To analyze the influence of the drive torque on vehicle handling stability in the situation of drivingand steering,a non-iner 5 degree of freedom full vehicle model is established,including the longitudinal mo-tion,the lateral motion,the yaw motion and the rotations of the front and rear wheels.The weight of the tirelongitudinal force in the lateral,the influence of the longitudinal tire force on the corning stiffness and the vari-able longitudinal speeds are the three aspects impact vehicle handling stability by theoretical derivation andsimulation. By simulating the front drive vehicle,the result shows that,the steering performance is gettingworse with the drive torque increasing; even worse,the steering ability will be lost when the drive wheels areshipped.

Abstract: For simulating the characteristics of laser deep penetration welding pool in three-dimensional,thewelding process was regarded as quasi-steady-state under a certain assumptions, and the mathematical modelsof pool shape and temperature distribution for laser welding low carbon were applied to solve the phase trans-formation interface. The mathematical simulations of laser welding pool shape and temperature filed were sim-plified to solve the integral equation of gas / liquid interface and solid / liquid interface. Then,the character-istics of weld pool shape were obtained.The results show that ,for laser weld pool,the lowest point lagged be-hind the optical axis center,the front wall gradient was steep,and the wear wall gradient was smooth. Theweld pool depth and width both increased with the increase of laser power,and decreased with the increase ofwelding speed. As laser spot radius increases,the weld pool depth increases，and the weld pool width decrea-ses. The highest temperature on the surface of weld pool also lagged behind the optical axis center,and the i-sothermals distributed dense which would indicate a narrow heat-affected zone.

Abstract: In order to solve the problems，such as low efficiency，poor real-time performance and so on，in on－line detection of glass fiber fabric，a new method of fabric defect detection based on Blob analysis is proposed． Firstly，the image is smoothed by using mean filter，and the noises and the fabric textures are weakened． Then，the Otsu algorithm is used to find the best threshold to segment the image into Blob and background pixels． The shape of the Blob region is adjusted by using morphological processing． Finally，the connectivity analysis and feature extraction of the image are carried out． The number and size of the defects are obtained by using the least square fitting of the Blob region． Experimental results show that the method is simple，reliable and robust．

Abstract: Based on the principle and the motion law of the spatial RCCR mechanism,the performance param-eters of the axial piston pump based on the Spatial RCCR Mechanism are calculated,and the displacement for-mula and the flow pulsation coefficient of this pump are obtained. Then,the relationship between the numberof pistons and the flow pulsation coefficient is analyzed,and it proved that this pump accords wih the law ofgeneral slanting axial pumps. Compared with the existing slanting axial pump,the movement orbits of the dow-el bar articulation joint point for the new type of axial piston pump is an ellipse,and the motion law of the pis-ton is clear,which is a smooth sine curve. And the force of z-atis is in good conditions of this oump at the ob-lique pump strucfure condition,which is close to consine curve.

Abstract: In this paper,a bus powertrain of which the structure and material are more complex is applied asan example. First,it introduces the inertial parameter identification technique based on experimental modal a-nalysis. The method obtains the center-of-mass coordinate and the inertial parameters of the powertrain throughthe excitation and the coordinate of response points,relative motions and dynamics equations. Then,the paperproduces how to obtain the inertial parameters of the powertrain on the basis of knowing the data of each part,it validates the accuracy of obtaining the complex inertial parameters of the rigid body through the contrast andanalysis with the result of experimental modal.

Abstract: In order to improve the present waterlogging condition of underpass,a scheme of adding a storagepipe in underpass is given.Based on the tube-soil mechanics model,a simulation mechanical model of storagepipe is built，which is analyzed by finite element method. The reinforcement of the storage pipe is calculated,while the influence of parameters on the mechanical property of storage pipe is studied. The test results showthat: the covering earth thickness,the soil base modulus，the wall thickness and the diameter have significantinfluence on mechanical property of storage pipe. According to the research results, a new storage pipe is rec-ommended as follows: covering earth thickness of 1.5 m， soil base modulus of 40 MPa，wall thickness of 10cm and diameter of 1200 mm.

Abstract: Information of concrete-filled steel tube ( CFST)dumbbell shaped rib arch bridge was investigated.Main influencing factors of out-of-plane stability of this kind of arch bridge were statistically analyzed. Astandard dumbbell-shaped rib arch which could be representatively in accordance with engineering practice wasbuilt by referring to real bridges. The parameter analysis was conducted on this standard arch. The resultsshow that coefficient of elastic stability increases firstly and then decreases while the rise-span ratio increases.When the rise-span ratio is in the range from 0. 22 to 0.25,the coefficient of elastic stability of dumbbell-shaped arch bridge reaches the peak. The influence of the width-span ratio of arch is similar to the rise-spanratio. Brace form not only affects the stability coefficient of arch,but also affects the out-of-plane instabilitymode. The top brace has greater effect on elastic stability than side braces. Enlarging the diameter of steelpipe can effectively improve the out-of-plane stability of dumbbell-shaped arch,but enlarging the sectionheight of arch rib could only slightly improve the out-of-plane stability. Then coefficient of elastic stability ofarch will enlarge with the increase of deck stiffness, but there is a reasonable value interval of deck stiffness.While exceeding this interval,the coefficient increases slowly.

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