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Effects of laccase incubated from white rot fungi on the mechanical properties of fiberboard

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Journal of Forestry Research 2017年第6期28卷 1282-1289页

作者： Xiaodong Zhu song Han Yu Liu guangsheng Chen Key Laboratory of Bio-based Material Science and Technology (Ministry of Education) Northeast Forestry University Harbin 150040 People’s Republic of China College of Forestry Northeast Forestry UniversityHarbin 150040 People’s Republic of China

White rot fungi were optimized to cultivate highly active laccase. The characteristics of laccase incubated by continuous culture were compared with those of direct culture. The enzyme activity of laccase incubated by continuous culture technology reached a higher value on the fifth day of the growth. The optimization incubation time of high activity laccase was the eleventh day. A large amount of highly active laccase can be obtained in a relatively short time by continuous culture to replace traditional laccase. After laccase treatment, the lignin composition of wood fibers were oxidation-catalyzed by laccase. The number of chemical-bonding points between the wood fibers was increased. The wood fibers treated by laccase were fabricated into boards and their mechanical properties improved with the laccase-incubation times. Compared with the fiberboards made from fibers that were pre-treated by laccase of incubation 5 days, the static bending strength of those that were pre-treated by laccase of incubation 11 days was increased by 18.95%, the elastic modulus was increased by 35.49%, and the internal bond strength was increased by 44.11%.

关键词： White rot fungus Laccase Fiberboard Mechanical property

地方高校基于工程教育认证的人才培养方案研究——以沈阳航空航天大学材料成型及控制工程专业为例

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铸造技术 2019年第3期40卷 328-330页

作者：王艳晶刘红徐前刚宋广胜沈阳航空航天大学材料科学与工程学院辽宁沈阳110136

针对地方高校材料成型及控制工程专业的人才培养方案以工程教育认证为目标进行了修订。在修订培养目标过程中注意结合学校立足航空,服务地方的办学特色,毕业要求的制定要对培养目标形成有力的支撑,课程体系的建设要对毕业要求形成支撑... 详细信息

针对地方高校材料成型及控制工程专业的人才培养方案以工程教育认证为目标进行了修订。在修订培养目标过程中注意结合学校立足航空,服务地方的办学特色,毕业要求的制定要对培养目标形成有力的支撑,课程体系的建设要对毕业要求形成支撑。通过本次培养方案的修订,明确了人才培养方向,加强了课程体系的建设和专业教学改革,对于学校材料成型及控制工程专业人才培养质量的提高有促进作用。

关键词：材料成型及控制工程专业工程教育认证人才培养方案地方高校

Abrasion Resistance Enhancement of Ultrafine-structured WC-Co Coating Fabricated by using in situ Synthesized Composite Powder

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Journal of Materials Science & Technology 2013年第11期29卷 1067-1073页

作者： Haibin Wang Xiaoyan song Chongbin Wei Yang Gao guangsheng Guo College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaBeijing University of Technology

The ultrafine WC-Co composite powder was synthesized by a newly developed rapid route based on in situ reactions. By using the as-synthesized composite powder, the granulation processing was then carried out to prepare the ultrafine-structured thermal spraying feedstock. The influences of the heat-treatment process on density of the feedstock powder, phase constitution and wear resistance of the resultant WC-Co coatings fabricated by high velocity oxy-fuel （HVOF） were investigated. The results showed that increasing the heating temperature and extending the holding time leaded to remarkable increase in the density and flowability of the feedstock powder. As a result, the decarburization of the in-flight particles could be decreased and the wear resistance of coating was significantly enhanced. The present study demonstrated that the developed techniques for the ultrafine powder and its thermal-sprayed coatings had very promising applications in scaling up to produce ultrafine-structured cermet coatings with excellent performance.

关键词： WC-Co composite powder Decarburization Density Ultrafine-structured coating Abrasion resistance

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山东省中药饮片经营调研分析与对策建议

中外医药研究 2023年第8期2卷 157-159页

作者：杨成勇邵长秀刘慧宋光胜山东省食品药品审评查验中心山东济南250014

目的:对山东省中药饮片产业现状、经营环节中存在的问题和成因进行调研,科学评估质量安全风险,提出解决对策,为制定药品监管措施提供参考。方法:对2020—2022年山东省药品监管单位和中药饮片经营企业进行调研,分析存在的问题,提出相应... 详细信息

目的:对山东省中药饮片产业现状、经营环节中存在的问题和成因进行调研,科学评估质量安全风险,提出解决对策,为制定药品监管措施提供参考。方法:对2020—2022年山东省药品监管单位和中药饮片经营企业进行调研,分析存在的问题,提出相应的对策。结果:山东省中药饮片产业现状、经营环节中存在的问题集中在中药饮片质量方面和药品经营管理方面。结论:应制定统一的中药饮片管理标准,建立中药饮片追溯管理系统,制定中长期人才培养规划,尽快完善新修订《药品管理法》配套法规。

关键词：山东省中药饮片经营分析对策

Synthesis and fluorescence properties of CdSe/CdS nanoparticles in aqueous media

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Science China Chemistry 2010年第5期53卷 1054-1058页

作者： Han, DongMei song, ChunFeng Guo, guangsheng Li, XiaoYu School of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China Key Laboratory for Nanomaterials Ministry of Education Beijing University of Chemical Technology Beijing 100029 China

On the basis of unique structural characteristics of α-cyclodextrin,α-cyclodextrin modified CdSe/CdS nanoparticles have been successfully synthesized in aqueous *** of AFM,TEM,EDS,FTIR,UV-vis absorbance and photoluminescence spectra were used to characterize the morphology,composition and optical characteristics of the synthesized *** results showed that the as-synthesized nanoparticles were elliptical and composed of several small *** average length and diameter were about 20 nm and 15 ***/CdS nanoparticles had single well-crystallized hexagonal *** with a shell of CdS on the surface,α-CD/CdSe-CdS nanoparticles exhibited a red shift in the absorption spectrum,intensity growth in the emission spectrum and a substantial increase in Quantum *** size distribution could be adjusted by precursor ratios in the presence of α-cyclodextrins.

关键词： CdSe/CdS α-cyclodextrins aqueous solution synthesis fluorescence properties

Textural Evolution of AZ31B Magnesium Alloy Sheets Undergoing Repeated Unidirectional Bending at Room Temperature

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Journal of Materials Science & Technology 2009年第3期25卷 365-369页

作者： guangsheng Huang Wei Xu Guangjie Huang Hongcheng Li Bo song National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing 400044 China College of Materials Science and Engineering Chongqing University Chongqing 400045 China CISDI Engineering Co. Ltd Chongqing 400013 China

In this paper, repeated unidirectional bending （RUB）, was applied to improve the texture of AZ31B magnesium alloy sheets so as to enhance their stamping properties. The samples undergoing RUB were annealed at different temperatures. The mechanical properties, formability, textural components and microstructure of the samples before and after RUB were characterized and compared. It was found that the basal textural component was reduced dramatically by RUB, and that （1212） and （1211） textural components appeared. Annealing has a great effect on the mechanical properties of samples undergoing RUB. The plasticity and stamping formability of samples were greatly improved by RUB and annealing at 260℃ for 1 h, and elongation to fracture and Erichsen value were increased to 38% and 67%, respectively.

关键词： Magnesium Alloy Sheets Unidirectional bending Basal texture Formability

脱硫石膏粉煤灰混合材料用作地基填料的试验研究

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四川建筑科学研究 2012年第6期38卷 214-218页

作者：宋光胜顾强康余承华苏立海张仁义空军工程大学工程学院陕西西安710038

以贵州纳雍电厂粉煤灰和脱硫石膏为研究对象,运用我校顾强康教授自行设计的高压固结直剪仪,对粉煤灰中掺入不同比例的脱硫石膏形成混合材料,通过击实试验、压缩试验和直剪试验研究不同脱硫石膏含量下粉煤灰的工程特性,与纯的粉煤灰作对... 详细信息

以贵州纳雍电厂粉煤灰和脱硫石膏为研究对象,运用我校顾强康教授自行设计的高压固结直剪仪,对粉煤灰中掺入不同比例的脱硫石膏形成混合材料,通过击实试验、压缩试验和直剪试验研究不同脱硫石膏含量下粉煤灰的工程特性,与纯的粉煤灰作对比,得到不同脱硫石膏含量对粉煤灰变形及强度特性的影响规律。文中给出了实际工程中利用粉煤灰与脱硫石膏混合材料的掺和比例。

关键词：粉煤灰脱硫石膏地基处理工程性质

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厨房有害气体的合理排放

防灾博览 2004年第4期 42-42页

作者：宋广生

SARS病毒让许多居民懂得了开窗换气,但是一些家庭和饭店把厨房排烟管伸向户外,开窗又面临新的污染.按照国家规定城市建筑楼房都有厨房的排烟道,为什么会出现油烟回灌到室内的情况呢?经过室内环境监测中心调查研究,主要原因一是旧楼房的... 详细信息

SARS病毒让许多居民懂得了开窗换气,但是一些家庭和饭店把厨房排烟管伸向户外,开窗又面临新的污染.按照国家规定城市建筑楼房都有厨房的排烟道,为什么会出现油烟回灌到室内的情况呢?经过室内环境监测中心调查研究,主要原因一是旧楼房的厨房排烟道堵塞或者不畅,无法正常使用,一些家庭无奈之下只好将油烟从厨房窗户排出;二是有的家庭在装修时改动了原有格局,厨房的灶具远离原有排烟道,连接比较困难,便直接就近把排烟管伸到了窗外;三是一些新建房和旧房由于厨房排烟道互相串气,一家炒菜,多家闻味,因此有的家庭只好堵塞了原有的排风道,另辟蹊径.

关键词：厨房楼房排烟道旧楼城市建筑室内窗户正常 SARS病毒居民

Clarifying the roles of grain boundary and grain orientation on the corrosion and discharge processes of α-Mg based Mg-Li alloys for primary Mg-air batteries

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Journal of Materials Science & Technology 2021年第3期62卷 128-138页

作者： Huabao Yang Liang Wu Bin Jiang Wenjun Liu Jiangfeng song guangsheng Huang Dingfei Zhang Fusheng Pan State Key Laboratory of Mechanical Transmissions College of Materials Science and EngineeringChongqing UniversityChongqing400044China Chongqing Academy of Science and Technology Chongqing401123China College of Materials Science and Engineering Chongqing University of TechnologyChongqing400054China

The corrosion behavior at open circuit potential(OCP)and discharge properties under applied anodic currents of twoα-Mg based Mg-Li alloys,i.e.,LAZ131 and LAZ531,with different microstructural features for primary Mg-air batteries are *** results show that the grain boundaries contribute equally to the corrosion and discharge processes,which are attacked preferentially than the grain interiors and accelerate the dissolution processes ofα-Mg based Mg-Li ***(10-10)/(11-20)orientated grains are attacked preferentially than the(0002)orientated grains on the corrosion and discharge *** increased corrosion rate and improved discharge properties are attributed to the refinement of grain size,decreased content of(0002)orientated grains and increased content of(10-10)/(11-20)orientated *** those,the LAZ531 alloy possesses high and steady discharge voltage at small discharge current density for long time,with the values of 1.4801 V at 2.5 mA cm^(-2)and 1.3742 V at 10 mA cm^(-2).

关键词： Grain boundary Grain orientation Corrosion behavior Discharge property Mg-air battery