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Pleurotus nebrodensis polysaccharide(PN-S) enhances the immunity of immunosuppressed mice

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Chinese Journal of Natural Medicines 2015年第10期13卷 760-766页

作者： CUI Hai-yan WANG Chang-Lu WANG Yu-Rong LI Zhen-Jing CHEN Mian-Hua LI Feng-Juan sun yan-ping Key Laboratory of Food Nutrition and Safety Ministry of Education School of Food Engineering and Biotechnology Tianjin University of Science and Technology

In the present study, the effects of Pleurotus nebrodensis polysaccharide(PN-S) on the immune functions of immunosuppressed mice were determined. The immunosuppressed mouse model was established by treating the mice with cyclophosphamide(40 mg/kg/2d, CY) through intraperitoneal injection. The results showed that PN-S administration significantly reversed the CY-induced weight loss, increased the thymic and splenic indices, and promoted proliferation of T lymphocyte, B lymphocyte, and macrophages. PN-S also enhanced the activity of natural killer cells and increased the immunoglobulin M(Ig M) and immunoglobulin G(Ig G) levels in the serum. In addition, PN-S treatment significantly increased the phagocytic activity of mouse peritoneal macrophages. PN-S also increased the levels of interleukin-6(IL-6), tumor necrosis factor-α(TNF-α), interferon-γ(INF-γ), and nitric oxide(NOS) in splenocytes. q RT-PCR results also indicated that PN-S increased the m RNA expression of IL-6, TNF-α, INF-γ, and nitric oxide synthase(i NOS) in the splenocytes. These results suggest that PN-S treatment enhances the immune function of immunosuppressed mice. This study may provide a basis for the application of this fungus in adjacent immunopotentiating therapy against cancer and in the treatment of chemotherapy-induced immunosuppression.

关键词： Immunosuppressed mice Pleurotus nebrodensis polysaccharide Cyclophosphamide

Preliminary Study on E. coli Microbial Fuel Cell and On-electrode Taming of the Biocatalyst

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过程工程学报 2008年第6期8卷 1179-1184页

作者：郗名悦孙彦平 Department of Chemical Engineering Taiyuan University of Technology

A mediator microbial fuel cell (MFC) was constructed by using E. coli as biocatalyst and new methylene blue as electron mediator. E. coli cells were carried out in anaerobic growth prior to inoculating them into the MFC in order to pre-adapt bacterial metabolism in an anaerobic environment, the electricity generation of MFC was tested, its maximum power density reached 263.94 mW/m2 with the corresponding current density 1287.50 mA/m2, the internal resistance of MFC was 200Ω, and capability of the MFC was even better than those reported so far. Moreover, on-electrode taming method was adopted to improve electrochemical activity of E. coli, namely a combination of E. coli taming and electricity generation simultaneously in the same MFC without scraping off the biofilm of MFC, after the 4th on-electrode taming, the tamed E. coli MFC showed a 54% improvement in peak current density, being 612.50 mA/m2, and a 64% improvement in the maximum power output, being 166.67 mW/m2, compared with that of parental E. coli MFC. And the maturation time of tamed biofilm was obviously reduced to 240 min, quickening up 1 times compared with that of parental E. coli biofilm.

关键词：大肠杆菌微生物燃料电池电极生物催化剂

带有止步和中途退出的M/M/S/N同步多重休假排队系统的性能分析

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系统工程理论与实践 2007年第8期27卷 152-158页

作者：孙妍平岳德权海南大学信息科学技术学院海口570228 燕山大学理学院秦皇岛066004

研究了带有止步和中途退出的M/M/S/N同步多重休假的排队系统.首先,利用马尔科夫过程理论建立了系统稳态概率满足的方程组.其次,利用矩阵解法求出了稳态概率的矩阵解,并得到了系统的平均队长、平均等待队长及顾客的平均损失率等性能指标... 详细信息

研究了带有止步和中途退出的M/M/S/N同步多重休假的排队系统.首先,利用马尔科夫过程理论建立了系统稳态概率满足的方程组.其次,利用矩阵解法求出了稳态概率的矩阵解,并得到了系统的平均队长、平均等待队长及顾客的平均损失率等性能指标.在此基础上建立了系统的费用模型来确定最优服务员数,以使系统单位时间的平均费用达到最小.最后进行了敏感性分析并考察了系统各参数值的变化对最优费用和最优服务员数的影响.

关键词：排队系统稳态概率最优服务员数止步中途退出

带有止步和中途退出的M/M/C/N部分服务员同步多重休假排队系统的等待时间

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系统工程理论与实践 2008年第2期28卷 89-97页

作者：岳德权孙妍平燕山大学理学院秦皇岛066004 海南大学信息科学技术学院海口570228

研究了带有止步和中途退出的M/M/C/N部分服务员同步多重休假排队系统的等待时间.当一个顾客离去时,系统中有d(1≤d 详细信息

研究了带有止步和中途退出的M/M/C/N部分服务员同步多重休假排队系统的等待时间.当一个顾客离去时,系统中有d(1≤d

关键词：排队系统等待时间同步休假止步中途退出

带有止步和中途退出的同步N-策略多重休假的M/M/R/K排队系统的性能分析

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系统工程理论与实践 2008年第11期28卷 94-102,108页

作者：岳德权孙妍平燕山大学理学院秦皇岛066004

研究了带有止步和中途退出的同步N策略多重休假的M/M/R/K排队系统.在服务员全忙或者正在休假时,到达的顾客或者决定进入系统等待服务,或者不进入系统;而进入系统的顾客因为等待的不耐烦在没有接受服务的情况下也可能离开系统.当系统变空... 详细信息

研究了带有止步和中途退出的同步N策略多重休假的M/M/R/K排队系统.在服务员全忙或者正在休假时,到达的顾客或者决定进入系统等待服务,或者不进入系统;而进入系统的顾客因为等待的不耐烦在没有接受服务的情况下也可能离开系统.当系统变空时,所有服务员立即进行N策略多重休假.首先,利用马尔科夫过程理论建立了系统稳态概率满足的方程组.其次,利用分块矩阵的解法求出了系统稳态概率的矩阵解,并得到了系统的平均队长、平均等待队长及顾客的平均损失率等性能指标.最后,求出了在服务员全忙时进入系统并最终接受服务的顾客的条件等待时间分布及条件平均等待时间.

关键词：排队系统队长同步休假止步中途退出

Research on a New Kind of ES Based on XML/Web

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厦门大学学报（自然科学版） 2002年第S1期41卷 266-267页

作者： LAI Chao-an, sun yan-ming, HUANG ping, ZHENG Shi-xiong (College of Machine Engineering, South China University of Technology, Guangzhou 510640, China)

A new knowledge acquisition methodology for mechani ca l knowledge Web was put forward in this paper after discussed the backwards of k nowledge acquisition method for technical document: natural language understandi ng and ES. A kind of united knowledge representation model, which can include ma ny sorts of knowledge carriers and knowledge representation methods, was advance d firstly, and then mechanical knowledge XML tag was designed based on it. Thus, knowledge still stay in primary electronic document, and knowledge document bec ome document knowledge base based on Web with hierarchy. A corresponding method was advanced and a knowledge acquisition system was developed. It can understand user’s questions in natural language and then find the relevant knowledge and execute reasoning and answer the user’s questions according the result of reaso ning and realized the automatic knowledge acquisition from Web knowledge documen t.

关键词： knowledge acquisition knowledge representation XML WWW

PAN基预氧化纤维表面超微结构的STM研究

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新型炭材料 2005年第4期20卷 312-316页

作者：徐海萍孙彦平陈新谋太原理工大学化学工程系山西太原030024 石家庄新谋新技术开发有限公司河北石家庄050091

采用扫描隧道显微镜(STM)对射频等离子法制备的聚丙烯腈(PAN)基预氧化纤维的表面超微结构进行了研究,定性了预氧化纤维的三级结构单元。结果显示:在微米尺度下,预氧化纤维表面分布有粗细不一、沿轴向排列的带状微纤,微纤之间相互交叉;... 详细信息

采用扫描隧道显微镜(STM)对射频等离子法制备的聚丙烯腈(PAN)基预氧化纤维的表面超微结构进行了研究,定性了预氧化纤维的三级结构单元。结果显示:在微米尺度下,预氧化纤维表面分布有粗细不一、沿轴向排列的带状微纤,微纤之间相互交叉;在纳米尺度下,观察到微纤由相互缠结、紧密排列的超微纤组成,随着扫描范围的逐渐缩小,进一步看到超微纤由堆积起来的细小微晶组成;在原子级尺度上,微晶表面碳原子与高取向热解石墨(HOPG)相比不很规则,但具有取向排列趋势。

关键词：射频等离子法预氧化纤维超微结构扫描隧道显微镜

Interactive Oxidation of Photocatalysis and Electrocatalysis for Degradation of Phenol in a Photoreactor

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过程工程学报 2009年第5期9卷 916-921页

作者：樊彩梅王艳梁镇海王韵芳郝晓刚孙彦平 College of Chemistry and Chemical Engineering Taiyuan University of Technology College of Chemistry and Bioengineering Taiyuan University of Science and Technology

TiO2/C particles as photocatalyst were prepared by dipping TiO2 suspension solution with activated carbon and were applied in the photocatalytic-electrocatalytic degradation of phenol, the Ti/SnO2+Sb2O3/PbO2 electrode and oxygen diffusion electrode were used as anode and cathode respectively, and a 250 W ultraviolet lamp (365 nm) as side light source. The SEM results of TiO2/C and Ti/SnO2+Sb2O3/PbO2 anode indicated that the TiO2 on carbon particles was uniform and PbO2 film on the surface of anode was in cauliflower form, the XRD result of oxygen diffusion electrode showed that only crystalline graphite was found. The influential parameters of degradation process such as applied cell voltage (E), initial concentration of phenol (C0), amount of TiO2 catalyst and air flow rate (v) were discussed. Under the following experimental conditions of C0=50 mg/L, pH=6, E=2 V, TiO2 0.98 mg/mL, v=382.2 mL/min, and light intensity I=10.5 mW/cm2, phenol could be entirely degraded, and about 89% of total organic carbon (TOC) was removed after 3 h degradation.

关键词：光催化电催化交互作用 TiO2/C 苯酚

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《农药管理条例》修改之浅见

农药 2005年第9期44卷 429-430页

作者：孙艳萍农业部农药检定所北京100026

随着农药市场专项整治行动的不断深入,《农药管理条例》的薄弱之处也逐渐显现出来,根据“整治市场、法律先行”的原则,应进一步完善《农药管理条例》的有关内容,建立农药经营许可制度、强化农药标签管理、建立农药购销档案制度、细化和... 详细信息

随着农药市场专项整治行动的不断深入,《农药管理条例》的薄弱之处也逐渐显现出来,根据“整治市场、法律先行”的原则,应进一步完善《农药管理条例》的有关内容,建立农药经营许可制度、强化农药标签管理、建立农药购销档案制度、细化和完善农药违法行为的处罚规定,充分发挥《农药管理条例》对农药生产、经营和使用的监督管理作用。

关键词：农药条例建议