Inherently intelligent behaviors and uniquely natural attributes of some organisms in nature were specifically listed in this paper. Inspired by nature，the theoretical foundation for constructing wood bionics was preliminarily stated. Under the guidance of biology and current technology，wood will be endowed with some untraditional properties and newly innovated wood-based materials will possess a much larger developing space.
As an important field of the conversion of biomass energy，biomass fuel pellets （commonly known as“wood- pellet”）get more and more attention. This paper discusses the combustion performance，the effect of energy conservation and emissions reduction，manufacturing technology and research achievement of the key production equipments. On the basis，the large-scale(annual output of 2.0×105 t) and low-cost wood-pellet production line is completed finally，which has an important demonstration significance to promote the healthy development of wood-pellet industry.
High- frequency vacuum combined wood drying is a kind of fast drying speed， low energy consumption，little environmental pollution of new drying technology. On the basis of theoretical analysis with high frequency in wood vacuum drying process，the fuzzy controller and fuzzy neural network controller of wood drying are designed in view of the neural network method to establish model of wood drying. The simulation experiment results show that fuzzy neural network control is better，such as the temperature rising fast，high control precision，good stability. The method to realize the automatic control of timber drying process has important research significance.
The polypropylene (PP) based wood plastic composite (WPC) was prepared by compress method，and the non- isothermal crystallization kinetics of the composite was characterized by differential scanning calorimetry，the Jeziorny method and Mo method were used to analyze the non-isothermal crystallization kinetics and the results showed that both of the methods can work well on the composite，the wood flour can improve the peak temperature of crystallization and decrease the crystallization time of the PP based WPC .
This study investigated the image analytical method which was used to measure the tangential strains, including practical shrinkage strain, free shrinkage strain, elastic strain,viscoelastic creep strain, and mechano-sorptive (MS) creep, which caused by shrinkage anisotropy during slow conventional drying of wood disks. Also we analyzed the stress in different moisture content (MC) and the relations between stress and strain. The results showed that the image analytical method could meet the requirements in accurate level; below the fiber saturation point (FSP), the wood disks were initially subject to tangential tensile stress; with the decreasing MC, the tensile stress turned into compressive stress. The relations between stress and strain were complex. It had no obviously corresponding connections with the viscoelastic creep strain, and it was almost corresponding with the MS creep.
The paper is mixing the raw materials of wheat straw as enhanceosome and highdensity polyethylene/pohyprpylene (HDPE/PP) of thermoplastic to produced wood-plastic composite by adopting extrusion way and researching effect about the content of HDPE and PP on the properties of composite. Under a certain conditions，the high-speed mixer mixed the compound of wheat straw powder and thermoplastics and other auxiliaries，and then the compound were melting prilling by twin-screw extruder followed and molding by the single screw extruder.The mechanical properties of composite of wheat straw and thermoplastic were measured .The results indicated that adding a small amount of wheat straw powder caused the reduction of mechanical properties of wood plastic composite，the mechanical properties of wood plastic composite increased with increasing wheat straw powder content，mechanical properties decreased when the content of wheat straw was more than a certain percentage，especially，the impact property decreased obviously；the test indicated that the mechanical properties of HDPE were higher than PP.
The paper took the man-planted Pinus Koraiensis of Northeast Forestry University Laoshan Forest Farm in sunny slope and shady slope as research object，based on the fractal theory，studied the Pinus Koraiensis wood carbon storage through fractal analysis from the nonlinear perspective，and discussed the regular change. It aimed to ensure the difference among the capacity of wood carbon storage under different geographical location. The research results showed that，the radial variation trend of Pinus Koraiensis carbon storage of Laoshan Forest Farm in sunny slope was close to the shady slope，and the carbon storage capacity of shady slope was higher than that of sunny slope. The mean fractal dimension of juvenile wood and mature wood carbon storage of shady slope was obviously higher than that of sunny slope，its gradient distribution of carbon storage was more complex than sunny slope and the effect of carbon storage was superior to sunny slope. Thus，it would provide the theoretical basis for choosing the site conditions of man-planted Pinus Koraiensis which was beneficial to improve the wood carbon storage effect.
The starch- based aqueous polymer isocycante（API）gluelam bonding as the research object，with tensile shear strength as a key evaluation index，accelerated aging tests on gluelam bonding to study damage mode and failure mechanism of the bonding The results show that：the adhesive fracture properties of ductile fracture structure，and with the increase of aging time，the damage mode of the bonding transforms form cohesion damage mode to the integrated mode of cohesion damage and interface damage. In the early stage of the aging tests，the effect of temperature on the tensile shear strength is more important；however，with the increase of aging time，the effect of humidity on tensile shear strength becomes more important.
Wooden forest products are indispensable in human life，the quality and safety of the products are closely related to the security and safety of consumers. This paper analyzed the present situation and the problems of the quality and safety of wooden forest products，and then proposed the countermeasures to improve and ensure the wooden forest products quality and safety. This，to some extent，can strengthen the quality and safety management of wooden forest products of our country，improve the quality and safety level of wooden forest products and promote our country’s forestry industry rapid and well development.
The combustion and thermal degradation of moso bamboo (Phyllostachys Pubescens) treated by boric acid and borax respectively，were characterized by thermogravimetry and the cone calorimeter. Results showed that，these two typical compounds had positive effects on decreasing the maximum pyrolysis rate，narrowing high-temperature decomposition，and promoting the yield of residual char when moso bamboo subjected to thermal decomposition. The treated bamboo exhibited less heat and smoke release compared to the control. Total heat release for borax and boric treated bamboo decreased by 50.6 % and 44.1 %，respectively. While，the total smoke release decreased by 95.3 % and 91.6 %，respectively. Applications of boric acid and borax have significant influence on protecting bamboo substrate from thermal degradation and combustion.
This paper studied the wettability of H2O，phenol formaldehyde adhesive (PF)，urea- formaldehyde adhesive (UF) and modified soy- based adhesive (MSA) in tangential sections of moso bamboo (Phyllostachys Pubescen) with different pole heights. Through measuring contact angles of four kinds of liquids on the tangential sections of moso bamboo，the dynamic wetting model was built，and the effects on the wettability of these liquids on the tangential sections with different pole heights and the differences of the wetting performance of these liquids on the tangential section of moso bamboo were analyzed.
Cellulose from flax shive was separated and modified with epoxychloropropane and triethylamine，and utilized as an adsorbent for the removal of reactive turquoise blue (RTB) from aqueous solutions. The surface morphology and functional groups of the adsorbent were analyzed using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The effects of contact time，adsorbent dose，initial concentration of dye and pH on adsorption of RTB were investigated. The results indicated that the adsorption capacity increased with increasing contact time and reached equilibrium after 180 min. Raising temperature is beneficial for adsorption. The maximum adsorption capacity of modified cellulose from flax shive for RTB was 198.45 mg/g at 40 ℃. The adsorption capacity was large at high initial concentration of dye. The adsorption was significantly affected by pH of solution.
Eucalyptus wood fiber was prepared to investigate the effects of alkali treatment on mechanism of extrusion bonding of the board. The results showed that hemi-cellulose and lignin were partly degraded during eucalyptus wood fiber were treated with alkali，these degraded substances could be copolymerized during hot-pressing，the influence of alkali (NaOH) on eucalyptus wood fiber was greater than the weak base (Na2CO3) and the processing time for 10 h was more appropriate，and the increased hydroxyl after defibrinating partly formed hydrogen-bonding during hot-pressing，resulting in strengthened fiber self-bonding.
Bio-oil was degraded by the heavy oil from biomass alcoholysis. Therefore，the hydrorefining of heavy oil was studied in the presence of V-W-Mo-Cu catalyst in this paper.The results showed that the catalyst revealed its reactivity only at above 330 ℃，and achieved the highest light oil yield of 93 % at 450 ℃. The extension of hydrogenation time was beneficial to the polymerization of heavy oil at low reaction temperature and the depolymerization at high reaction temperature. Meanwhile，the saturation of depolymerization fractions can be performed，and the yield of light oil from heavy oil hydrogenation can be promoted when the initial hydrogen pressure was increased to 6 MPa. The gas chromatography- mass spectrometry (GC- MS) analysis on light oil indicated that heavy oil could be cracked into micromolecule arene and phenolic compounds after hydrogenation，including 2-ethyl-1-methyl-benzene，butylbenzene，3-ethenyl-1-ethyl-benzene and phenol. However，the Fourier transform infrared spectrometer (FTIR) analysis on catalyst after hydrogenation showed that heavy oil also could be polymerized into macromolecule arene and phenolic polymer. After being baked at 550 ℃，the catalyst could be reused more than 5 times，and the yield of light oil was still up to 70 %.
Polyunsaturated fatty acid (PUFA) was separated from rubber seed oil (RSO)，and then epoxidized PUFA (EPUFA) was prepared by peroxyacetic acid generated in situ by reacting acetic acid and hydrogen peroxide with PUFA from RSO. Influence of the amount of 30 % H2O2 and acetic acid，reaction time，and reaction temperature on epoxidation were studied，results showed that the optimum reaction conditions as follows：the ration of PUFA/acetic acid / 30 % H2O2 was 1/0.9/2.5 (g/g/g)，the mixture reacted under 65 ℃ for 3 h，the epoxy value of EPUFA was up to 8.28 mol/100 g，relative conversion to oxirane was 82 %，conversion of double was 97 %.
Improvement of the robustness of superhydrophobic surface is crucial for the purpose of achieving commercial applications of these surfaces in such various areas as self-cleaning，water repellency and corrosion resistance.We have investigated a fabrication of polyvinyl alcohol（PVA）/silica（SiO2）composite polymer coating on wooden substrates with super repellency toward water，low sliding angles，low contact angle hysteresis，and relatively better mechanical robustness.
The silica particles with unique morphology and hydrophobicity have been synthesized via a one-step sol-gel process，which as well as polystyrene was employed in the bionic and stably superhydrophobic coatings with water contact angle of 153° and sliding angle less than 5° on wood surface by a drop-coating method. Scanning electron microscope (SEM) studies revealed that the composite coatings possess two dimensional hierarchical structures comprising of micron scale papilla and submicron scale granules. The synergistic effect of micron/submicron binary structure and low surface energy layer was responsible for the superhydrophobicity of wood surface. Moreover，the stability and durability of treated wood have been investigated as well，and the results showed that the product possesses superhydrophobic property in a wide extent，such as pure water，corrosive water under both acidic and basic conditions，some common organic solvents，which offers an opportunity to extend the range of practical applications for wood resources.
Superhydrophobic wood was prepared by an in situ sol-gel process. The wood surface was covered by a thin layer of nanostructured superhydrophobic film，and the contact angle of water droplet on the wood surface reached 150.6°. The phase composition，surface morphology and chemical groups of the superhydrophobic wood sample were observed by X-ray diffraction (XRD)，scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR)，respectively. The results revealed that the rough surface with nanoscale projections combined with hydrophobic vinyl groups on the surface contribute to the superhydrophobic property of the wood surface.
Maximum bending normal stress is one of the important parameters to measure flexural property of sandwich beam. Therefore，new methodology to calculate the stress is proposed based on the equivalent single beam theory，after that the numerical examples are demonstrated according to three point flexure test. The results showed that revised single beam theory (RSBT) are equivalent to multi-layer theory (MLT). When cross section of beam and maximum loading are fixed，the maximum bending normal stress calculated by RSBT is increased accordingly with increasing ratio of core thickness to the whole，but the result is constant for single beam theory (SBT). RSBT is set up to provide a new method for sandwich construction application in engineering industry.
In this paper，three hot water pre-extraction H-factors (0，500 and 1 000) and applicable digestion effective alkali dosages (15 %，18 % and 21 %) were selected to obtain bamboo kraft pulps with similar Kappa number (20). The effect of hot water pre-extraction on the elemntal chlorine free（ECF）bleaching performance of bamboo pulp was studied，through comparing brightness，post color (PC) number，decreasing rate of Kappa number，viscosity of bleached pulp with same brightness (85 %ISO) and beating degree (45°SR) under different dosages of chlorine dioxide and hydrogen peroxide. The results indicate that hot water pre-extraction before kraft pulping could obtain higher decreasing rate of Kappa number，higher brightness，lower PC number，similar viscosity of bleached pulp at the same total active chlorine factor.For the same brightness bleached pulp (85 %ISO)，hot water pre- extraction could save 1.4 % bleaching chemical，but the PC number was slightly higher.
In order to investigate the influence of pre-treatment methods such as water wash， acid wash and molten salt on biomass pyrolysis characteristic，rubber seed shell was selected as biomass feedstock.Deionized water，hydrochloric acid，sulfuric acid and methanoic acid and mixed acid as well as KCl and NaOH，whose mass fractions were 5 %，10 % and 15 %，respectively，were used to wash rubber seed shell，and the thermal decomposition behaviors and comprehensive index of rubber seed shell pyrolysis were analyzed. At the sametime，the kinetic parameters were studied. The results showed that water wash and acid wash can make thermo-gravimetric analysis and derivative thermogravimetric analysis curves of rubber seed shell pyrolysis shift to higher temperature section，and the maximum weight loss rate and temperature increased，but the melted salt was decreasing. The impacts of the concentration of hydrochloric acid and methanoic acid were negligible，but that of sulfuric acid was significant which became obvious with the increasing concentration. Acid wash was in favor of the emission of volatile matters contained in rubber seed shell，and can eliminate the sylvite.The ability order of three acids was as follows：sulfuric acid，hydrochloric acid and methanoic acid. The thermal comprehensive characteristic index of pyrolysis decreased after rubber seed shell was pretreated，and changed with the acid concentration.
The research based on the theory of porous medium heat and mass transfer，combined with the mechanism and characteristics of heat mass transfer in radio-frequency and convective drying，establish the mathematical model and give the definite condition through mass momentum and energy conservation equations. Each independent and dependent variable has independent control equation. Use the finite volume method to establish difference equation for to decouple the coupled partial differential equations，so that each independent variable can be solved independently when programming in Matlab or FORTRAN .