生物接触氧化法处理蛋白废水技术的研究

以粉丝生产过程中产生的蛋白废水为研究对象,采用生物接触氧化法处理蛋白废水,进行了大量实验,研究曝气量(强度)、水力停留时间、生物相、有毒物质及发酵等因素的影响效果,提出了采用该项技术的设计运行参数。     

轴流通风机五次方流型设计

提出了轴流通风机沿叶片叶高的载荷分布，按五次方流型设计的方法。它用于整流条件差且轮毂比小的空冷风机上有明显的节能效果。     

膜生物反应器去除病毒的影响因素

膜生物反应器(MBR)已在传统活性污泥工艺废水处理中得到广泛应用.研究了病毒在MBR中的去除及影响的因素,包括生物量、生物膜和悬浮固体浓度.结果表明,生物膜起主要作用,示踪物的大小和表面特性也影响小MBR系统对病毒的去除效率.     

Genomic and proteomic analysis of soybean heritable variations induced by space flight

To analyze the biological effects of space environment,the diversity of genomic DNA between the space flight soybean 194(4126) with phenotype of good yield and good fruit quality induced by space flight and the soybean with ground control was studied by amplified fragment length polymorphism(AFLP) method,and the polymorphism of space flight soybean 194(4126) was 3.56%.The differences of protein expression of seeds and leaves between the two kinds of soybeans were analysed by two-dimensional electrophoresis,PDQuest software and MALDI-TOF mass spectrometry.Results show that the loss and decrease of protein expression in 194(4126) soybean are subjected to the space fight of seeds,and three special proteins including Dehydrin,MAT1 and ceQORH are identified.It is concluded that the space environment changes the phenotype and genotype of soybeans due to the space flight of seeds.     

A comparison study of capacity degradation mechanism of LiFePO4-based lithium ion cells

The physical properties and electrochemical performance of two kinds of commercialized LiFePO₄ (hereafter abbreviated as LFP) were analyzed. And the cycle stability of the two kinds of material in the 18,650 type lithium ion cells was measured at different charge cut-off voltage (3.65,3.8,4.0 and 4.2 V). The two kinds of material showed remarkable difference. One has good cycle stability but another encounters serious failure problem at high charge cut-off voltage (4.2 V). Results showed that the impurities containing iron atom in the raw material and formed during the charge–discharge cycles are the main reasons of the failure mechanism. The impurities were reduced on the graphite surface and iron dendrite formed gradually, which may penetrate through the separator and results in the inner short circuit of the cells.