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作者： Guo, Minghui Wang, Yong Li, Jian Key Lab. of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin China

ISBN: (纸本)9781424480340

In the new period, the cultivation of innovative talents is the era responsibility and historical mission of Chinese universities. However, the disadvantages of traditional training model seriously restrict the cultivation of undergraduate innovative ability. According to analyze the existential problems of China's innovative talents training model, this paper, on the one hand, discusses the necessity of interaction between scientific research and teaching in the process of innovative talent training, on the other hand, basing on this training model, this paper puts forward countermeasures in the following aspects: building innovative terms of teachers, organizing innovation in teaching, developing innovation bases, building innovation platform and so on. Facing the new situation, this paper hopefully provides new useful inspiration for China's innovative talents training. © 2010 IEEE.

关键词： Personnel training

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The modeling and simulation analysis of wooden perforated panel absorption structure

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Noise and Vibration Worldwide 2010年第10期41卷 72-75页

作者： Guo, Ming-Hui Hou, Qing-Quan Wang, Jin-Man Yu, Hai-Peng Key Lab. of Bio-Based Material Science Technology of Ministry of Education Northeast Forestry University Harbin 150040 China School of Mechanical Engineering Heilongjiang University of Science and Technology Harbin 150027 China

The study analyzed the acoustical absorption performance of wooden perforated panels with finite element analysis software-ANSYS. The research process include modeling, meshing, loads, solution and results display. Simulation results showed that software ANSYS was good at absorption performance analysis of wooden perforated panels. There are some pressure distribution zones with peak and valley alternation between speaker and the tested material of the built model. It coincides with test result of real experiment equipment. The selections of structural parameters of wooden perforated panel lead to changes for solution.

关键词： Finite element method

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A note on the influence of pretreatment on the photodiscoloration by UV light as a function of energy of wood

A note on the influence of pretreatment on the photodiscolor...

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The 4th International Conference on bioinformatics and biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

作者： Minghui Guo Xin Guan Key Lab.of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin China

The effect of the pretreatment by acid and bleacher oncolor changes and FT-IR spectra of wood surfaces of *** due to irradiation has been examined. To monitor therelationship, L*, a*, b*, △E* parameters and FT-IR spectra ofsamples' surface were analyzed quantitatively byspectrophotometer and FT-IR at the different irradiation *** time was altered between 24, 48, 72, 96 and 120h. Ourfindings showed that acid treatment promoted photo-discolorationand bleaching treatment enhanced the lightnessvalue and b* value. The changes of the surface colors wererelated to carbonyl compounds, phenolic hydroxyl,paraquinones, ortho quinine and so on.

关键词： Bleaching Chemical analysis Color Surface treatment Temperature Application software materials science and technology Forestry Condition monitoring Humidity

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Arsenic speciation in sediments of Poyang Lake and its main branches

Arsenic speciation in sediments of Poyang Lake and its main ...

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3rd International Conference on bioinformatics and biomedical Engineering, iCBBE 2009

作者： Shujuan, Liu Mingbiao, Luo Faliang, Li Maolan, Wang Faculty of Chemistry Biology and Material Science East China Institute of Technology Fuzhou China Key Lab. of Poyang Lake Ecology and Bio-resource Utilization Ministry of Education Nanchang China

ISBN: (纸本)9781424429028

In this paper, arsenic speciations in sediments of Poyang Lake and its main branches were investigated in much details. Sediment samples were collected in different sites of Poyang Lake and its branches. Arsenic is quantified with micro-hydride generation- atomic fluorescence spectrometry. Five chemical combination speciations of arsenic in the sediments are differentiated by the commonly accepted five-step sequential extraction method. The results demonstrated that the total amount of arsenic in all sediments is in accordance with the background value of Poyang Lake district. Total arsenic, trivalent and pentavalent arsenic in the samples are mainly bounded to organic matter or existed as residual forms as well. Three reactive speciations including exchangeable species, carbonate bounded and Fe-Mn bounded forms account for about 20% of the total five fractions. The content of reactive speciations are varied with pH value, oxiding-reducing conditions and organic matter in the sediments, et al. Results also indicated that arsenic levels were much higher in certain branch sediments than that in Poyang lake, which can be explained by the stream pollution resulted from the drainage of minerals mining waste upriver or the sanitary sewage drainage. ©2009 IEEE.

关键词： Sediments

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Evaluation of Wood-based materials' Effect on Physiological, Psychological and Environment Pollution with AHP

Evaluation of Wood-based Materials' Effect on Physiological,...

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The 3rd International Conference on bioinformatics and biomedical Engineering(iCBBE 2009)(第三届生物信息与生物医学工程国际会议)

作者： Wenshuai Chen Haipeng Yu Key Lab of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University HarbinChina

Employing analytic hierarchy process (AHP) method, aim to evaluate the effects of wood-based materials on human psychology, physiology, and environment pollution, this article firstly constructed the hierarchical model and endowed the evaluation indexes with corresponding weight value. Further more, it scored 20 kinds of wood-based materials and 7 kinds of contrast materials, and then could rank them by their comprehensive scores. The results showed that solid woods have excellent effects on human physiological comfort and psychological satisfaction, while poor contribution to environment pollution. The score of each kind of material has certain positive correlations in the criteria-vector combinatorial space. based on the differences of comprehensive score, materials can be classified by quality and applicable field into 5 categories.

关键词： Wood-based materials Physiological comfort Psychological satisfaction Environmental pollution AHP

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Comparison of Image Analysis and Conventional Methods for Cellular Tissue Proportion Measurement of Wood

Comparison of Image Analysis and Conventional Methods for Ce...

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2009 IEEE International Conference on Information and Automation(2009年 IEEE信息与自动化国际学术会议)

作者： Haipeng Yu Yixing Liu Guangping Han Yongzhi Cui key Lab of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry UniversityHarbin 150040China

Wood cellular tissue proportion was measured using computer image processing technique. Digital transverse microstructure images were photographed through the system composed of microscope and video camera. The obtained images were then analyzed with an image analysis software through the steps of threshold, binary transform, grains filter, grains expanding and erosion, lacunae calking, and morphological features calculation. As a result, we could figure out the vessel proportion, fiber proportion and xylem ray proportion of broad-leaved tree, as well as the resin canal proportion, tracheid proportion and ray proportion of coniferous tree. Twenty-five species of coniferous and broad-leaved trees were tested using both image analysis and conventional methods. The results showed that significant positive correlations exist among the tested species. The approach of computer image analysis had more advantages of rapidity, accuracy and agility than the conventional methods.

关键词： Image analysis Microstructure Image processing Testing Wood industry Microscopy Resins Irrigation biological materials Automation

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Manufacture of conductive paper with the composite of pan/pulp fiber (II) - Effects of doping conditions on the performances of conductive paper

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Zhongguo Zaozhi Xuebao/Transactions of China Pulp and Paper 2006年第3期21卷 64-67页

作者： Song, Hao Qian, Xue-Ren Wang, Li-Juan Key Lab. of Bio-based Material Science and Technology Northeast Forestry University Harbin 150040 China

In order to manufacture conductive paper, aniline was polymerized into the micro-pore wall of the pulp fiber by in-situ adsorption polymerization process using ammonium persulfate as oxidant. The effects of different doping conditions on the performance of conductive paper including the kinds and concentrations of dopants, temperature and time of secondary doping and co-doping were studied in detail. The results showed that organic sulphonic acids (toluene-p-sulfonic acid and sulfosalicylic acid) and sulfuric acid were excellent dopants. The optimum concentration of the dopants was 0.6 mol/L. The optimum temperature and time of secondary doping were less than 35°C and 7.5 hours. Higher temperature and longer time would not only lead to increase the surface resistivity, but also lead to the destruction of pulp fiber matrix. The optimum co-doping effect could be obtained when the mole ratio of toluene-p-sulfonic acid to sulfuric acid was 2:1.

关键词： Co-doping Conductive paper Doping Polyaniline Secondary doping

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Conductive paper manufactured with the composite of PAn/pulp fiber(I)-Effects of adsorption and polymerization conditions on the performances of conductive paper

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Zhongguo Zaozhi Xuebao/Transactions of China Pulp and Paper 2006年第1期21卷 43-46页

作者： Song, Hao Qian, Xue-Ren Wang, Li-Juan Xie, Wei Key Lab. of Bio-based Material Science and Technology Northeast Forestry University Harbin 150040 China

In this paper, aniline was polymerized into the micro-pore wall of the pulp fiber by in-situ adsorption polymerization process in order to manufacture conductive paper. The effects of different reaction conditions including amount of oxidant(potassium persulfate or ammonium persulfate), reaction temperature and reaction time on the surface resistance of conductive paper were studied in detail. The optimum adsorption polymerization conditions were: polymerization time 105 minutes, reaction temperature 5°C. The mass ratio of oxidant to aniline is dependent on the types of oxidant. When potassium persulfate was used as oxidant, the optimum mass ratio of oxidant to aniline was 1:2 and the surface resistivity of the conductive paper was 481 Ω/cm2. However, the optimum mass ratio of oxidant to aniline was 3:4 and the surface resistivity was up to 108 Ω/cm2 when ammonium persulfate was used as oxidant. Thus, ammonium persulfate is better than potassium persulfate as oxidant.

关键词： Conductive paper Doping Polyaniline Pulp fiber

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Effect of moisture and fungal exposure on the mechanical properties of hem-fir plywood

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Journal of Forestry Research 2005年第4期16卷 299-300页

作者： WANG Wei-hong Scott Kent Camille Freitag Rorbert J. leichti Jeffrey J. Morrell Key Lab. of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin 150040 P. R. China Department of Wood Science and Engineering Oregon State University USA

Hem-fir plywood were exposed to two brown rot fungi, Gloeophyllum trabeum and Postia placenta, and one white rot fungus, Trametes versicolor, to investigate the effect of fungal decay on mechanical properties of plywood. Results showed that modulus of rupture （MOR） and modulus of elasticity （MOE） of hem-fir plywood declined significantly by inoculating fungi, and weight loss of sample had a modest decrease. The fungi also made a greater effect on MOR than on MOE. Of three fungi, Postia placenta caused a most significant weight loss, and Gloeophyllum trabeum resulted in a largest flexural properties loss. Substantial declines in MOR and MOE of hem-fir plywood were also observed when the plywood samples were stored under wet conditions over 15 weeks, even in the absence of fungal attack.

关键词： Fungus decay Weight loss Flexural properties Moist condition Plywood MOR, MOE

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