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Science china Chemistry 2007年第5期50卷 718-724页

作者： GAO DaWen1,2, WEN XiangHua1 & QIAN Yi1 1 State Key Joint Laboratory of Environmental Simulation and Pollution Control, Department of Environment Science and Engi- neering, Tsinghua university, Beijing 100084, china 2 school of forestry, northeast forestry university, harbin 15004., china State Key Joint Laboratory of Environmental Simulation and Pollution Control Department of Environment Science and Engineering Tsinghua University Beijing China school of forestry Northeast Forestry University Harbin China

In order to explore ways for the application of white rot fungus in dye effluent treatment under non-sterile conditions, experiment on decolorization of reactive brilliant red was carried out, employing nitrogen-limited and carbon-limited medium with C/N ratio of 56/2.2 and 28/44 (in mmol/L), respectively. The results showed that the decolorization rate reached 92% while culturing white rot fungus with ni- trogen-limited medium; however, the decolorization process ended in carbon-limited medium (n(C)/n(N) = 28/44) because of bacterial contamination. In addition, pH rose up to 9.31 after 4 d of decolorization, which was caused by bacterial contamination in the carbon-limited system. Therefore, it is concluded that nitrogen-limited medium can inhibit bacterial growth to some extent while carbon-limited medium is more easily contaminated by bacteria. Nitrogen-limited medium is more suitable in culture of white rot fungus for decolorization of reactive dye. Medium with the ability of inhibiting yeast growth should be developed by adjusting other components of nitrogen-limited medium.

关键词： white rot fungus, Phanerochaete chrysosporium, non-sterile, decolorization, dye

Method of transforming resistance gene to carbendazim into Trichoderma sp.

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Chinese Science Bulletin 1999年第1期44卷 65-68页

作者： YANG Qian ZHAO XiaoyanCollege of forestry, northeast forestry university, harbin 15004., china harbin Veterinary Institute, harbin 15004., china College of forestry Northeast Forestry University Harbin China harbin Veterinary Institute Harbin China

The method of transforming resistance gene to carbendazim into Trichoderma sp. was studied by using genetic engineering technique. The results show that the time of fungicide selection on the transformed Trichoderma sp. may have very important effect on the resistance gene transformation. By this method, the resistance gene to carbendazim was transformed into Trichoderma harzianum, a strain of T. harzianum with resistance to carbendazim was achieved. The transformant could grow on the medium containing 150μg/mL carbendazim. The resistance is stable after 10 times transfer on non-selective medium.

关键词： gene of resistance to carbendazim gene transformation Trichoderma sp.

AGE STRUCTURE AND SPATIAL PATTERN OF OLD-GROWTH KOREAN PINE FOREST IN XIAOXING'ANLING MOUNTAIN

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Journal of northeast forestry university 1991年第2期2卷 17-22页

作者： Ge Jianping Guo Haiyan Chen Dong northeast forestry university, harbin northeast forestry university Harbin

Spatial pattern of trees, basal stem increment and height were examined in a 5.0 ha mixed deciduous/ Pinus koraiensis forest from October in 1984 to May in 1987. Conclusions arc as following: 1. Analysis of the age-structure of the korcan pine forest shows that it is different from general steady-state forest type. The lack of saplings and individuals in small-diameter class clearly indicates that regeneration is not continuous. Continuous regeneration depends on thinning of the canopy to form a gap. Similar-aged korcan pine seedings grow in these gaps. 2. The horizontal structure of the korcan pine is a mosaic of more or less even-aged groups of trees. The mosaic is a result of korcan pine by regeneration strategy. The aggregations of korcan pine of different ages overlaps to form a continuous population generation. As a results, the population is maintained in steady state.

关键词： Xiaoxing'anling Age structure Spatial pattern Population Old-growth korean pine forest

Recent advances in fermentative biohydrogen production

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Progress in Natural Science:Materials International 2008年第3期18卷 253-258页

作者： Xuemei Liu a,b, Nanqi Ren a, Funan Song b, Chuanping Yang b, Aijie Wang a a harbin Institute of Technology, harbin 150010, china b northeast forestry university, harbin 15004., china harbin Institute of Technology Harbin 150010 China northeast forestry university Harbin 150040 China

Hydrogen energy, as a kind of clean energy with great potential, has been a hotspot for study worldwide. Based on the recent research on biohydrogen production, this paper gives a brief review on the following aspects: fermentative hydrogen production process and the engineering control statagy, key factors affecting the effciency of hydrogen production, such as substrates, cysteine, metal ions, anaerobic fermentation terminal products, and formic acid and ammonia. Moreover, anaerobic fermentative hydrogen-producing strain and reg- ulation and control of enzyme gene in fermentative hydrogen production are also discussed. Finally, the prospect of anaerobic fermen- tative biohydrogen production is proposed in three study areas, namely developing new techniques for breeding hydrogen-producing bacteria, exploitations of more strains and gene resources, and intensifying the application of microbial molecular breeding in hydrogen production.

关键词： Fermentation Biohydrogen production Regulation and control Novel strains

AN ECOLOGICAL APPROACH TO FOREST HARVESTING

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Journal of northeast forestry university 1990年第1期1卷 99-103页

作者： Shi Jiyannortheast forestry university, harbin, 15004., china northeast forestry university Harbin China

This paper deals with the relationships between forest harvesting and forest *** basing annual cuts and forest operation plans on ecological *** forest re-sources are decreasing and regeneration is *** combination of forest harvesting with ccologycan be viewed as a solution to the forest harvesting dilemma in *** paper also makes sometechnical recommendations for forest operations based on ecological principles.

关键词： Harvesting Forest ecology Forest operations Logging technique Post harvest regencration

Effect of Anti-freezing Admixtures on Alkali-silica Reaction in Mortars

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Journal of Wuhan university of Technology(Materials Science) 2005年第2期20卷 80-82页

作者：柳俊哲 school of Civil Engineering Northeast Forestry University Harbin 150040 China Assoc.Prof

The influence of anti-freezing admixture on the alkali aggregate reaction in mortar was analyzed with accelerated methods. It is confirmed that the addition of sodium salt ingredients of anti-freezing admixture accelerates the alkali silica reaction to some extent, whereas calcium salt ingredient of anti-freezing admixture reduces the expansion of alkali silica reaction caused by high alkali cement. It is found that the addition of the fly ash considerably suppresses the expansion of alkali silica reaction induced by the anti-freezing admixtures.

关键词： anti-freezing admixture alkali-silica reaction reactive aggregates fly ash

On Form Invariance,Lie Symmetry and Three Kinds of Conserved Quantities of Generalized Lagrange's Equations

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Communications in Theoretical Physics 2007年第7期48卷 37-42页

作者： ZHAO Shu-Hong LIANG Li-Fuoi school of Civil Engineering,harbin Engineering university,harbin 150001,china2 Engineering College,northeast Agricultural university,harbin 150030,china school of Civil Engineering Harbin Engineering University Harbin 150001 China Engineering College Northeast Agricultural University Harbin 150030 China

In this paper,the form invariance and the Lie symmetry of Lagrange's equations for nonconservativesystem in generalized classical mechanics under the infinitesimal transformations of group are studied,and the Noether'sconserved quantity,the new form conserved quantity,and the Hojman's conserved quantity of system are derived ***,an example is given to illustrate the application of the result.

关键词： form invariance Lie symmetry conserved quantity generalized classical mechanics Lagrange’s equation

Pictet-Spengler condensation reactions catalyzed by a recyclable H^+-montmorillonite as a heterogeneous BrΦnsted acid

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Science china Chemistry 2010年第3期53卷 561-567页

作者： WANG YuFeng,SONG ZhanBo,CHEN ChunXia & PENG JinSong Department of Chemistry and Chemical Engineering,College of Science,northeast forestry university,harbin 15004.,china Department of Chemistry and Chemical Engineering College of Science Northeast Forestry University Harbin China

Catalytic performance of different cation-exchanged montmorillonite clays has been investigated in the Pictet-Spengler C-C bond forming reaction.H+-Montmorillonite was found to be a very efficient and reusable catalyst for the endo cyclization of β-phenylethylamine derivatives with aldehydes under solvent-free *** addition,an aqueous condensation version for the synthesis of tetrahydro-β-carbolines using the H+-montmorillonite catalyst has been *** these environmentally friendly processes,the use of organic solvents was avoided and the catalyst was recycled with maintenance of high catalytic activity.

关键词： heterogeneous catalysis catalyst recycling mesoporous materials green synthesis

LOSS ASSESSMENT OF BURNED FOREST USING REMOTE SENSING AND GEOGRAPHICAL INFORMATION TECHNIQUES

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Journal of northeast forestry university 1991年第2期2卷 89-94页

作者： Zhou Hongze Ye Ronghua northeast forestry university northeast forestry university China

After forest fire, it is very needed to locate fire position and assess the loss of forest resources. In this paper, a method of burned forest assessment with satellite remote sensing data and over-laying techniques is discussed and used in the assessment of the burned forest in Malin Forest Farm after the large forest fire of May, 1987.

关键词： Assessment method Forest loss Forest fire Geographic information techniques

STUDY ON THE LOG PRODUCTION LINE IN LOG YARD

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Journal of northeast forestry university 1991年第2期2卷 77-82页

作者： Pan Delu Wang Jingxin northeast forestry university northeast forestry university China

The article deals with the prduction lines in log yard by investigating the utilizationof machines in forest areas,presents the methods and rules of differentiating the log productionlines and also summarizes the formation and development of three kinds of log production lines innortbeast forest areas of *** gives different combination types of log production lines andtheir applications, so it is significant for us to evaluate and standardize the log Production lines.

关键词： Log production line The machines combining types Log yard Forest logging operations