With the advancement of the deployment of IPv6 networks, the security problems brought by IPv6 have become increasingly serious. In order to fully understand the security vulnerabilities and risks existing in the IPv6 space, it is necessary to detect and scan IPv6 addresses, especially server addresses. As IPv6 has greatly expanded the address space compared with IPv4, the traditional scanning method is no longer applicable, and the current research on scanning of IPv6 lacks an effective method. In this paper, we collect an IPv6 address data set based on passive traffic collection, and explore the rules of IPv6 address deployment using this data set. By exploring the different characteristics of addresses caused by different address configuration methods, we filter and classify addresses, perform statistics and analysis on different types of addresses, and give the current education network deployment rules for different address configuration methods, which will help the IPv6 address scanning work to be carried out better.

针对直线电机的非线性严重和多变量高度耦合性,传统的控制方法难以达到要求,提出了一种基于复合模糊控制和ZPETC相结合的无铁心直线电机控制器.建立了关于直线电机的数学模型并且得到了速度与电压之间的传递函数;利用Ziger-Nichlol法整定PID控制器的参数;进行了这种新型直线电机控制器的设计,包括整体设计、复合模糊控制器的设计、ZPETC控制器的设计.最后进行了Matlab/simulink仿真,结果表明:和PID控制器相比,采用的基于复合模糊控制和ZPETC的新型控制器提高了系统的动态性能和稳态精度,具有更好的控制性能,验证了设计方案的可行性.

高性能的伺服驱动器参数整定需要参考永磁同步电机的相关参数.针对表贴式永磁同步电机的多参数辨识,设计了一种基于标准粒子群优化算法的辨识方法.在基本粒子群优化算法的基础上,引入了随时间线性递减权值的策略.仿真结果表明该辨识方法能够准确辨识出电机的多个参数,辨识速度快,稳定性好,精度较高,具有良好的实用性.

针对永磁同步直线电机,提出了一种混合蛙跳结合模糊控制器的PID控制方法.设计了模糊控制器,编写混合蛙跳算法,搭建了永磁同步直线电机模型和SFLA-FUZZY(混合蛙跳与模糊控制器)结合控制的Matlab仿真模型.通过仿真对比了电机分别在传统PID、模糊控制器、SFLA-FUZZY控制条件下的运行状况.仿真分析表明,SFLA-FUZZY控制的响应速度更快,超调量更小,具有较好的动静态性能.

肝胆疾病是严重危害异育银鲫的一种疾病,江苏省作为大宗淡水鱼类产量全国第二省,也是异育银鲫商品鱼主要供应基地,做了很多的防治工作,但是由于确诊难、用药乱,所以病情很难控制,造成2006年鲫鱼的经济损失达7.18亿元,给广大养殖户造成了严重损失. 一、异育银鲫肝损伤的研究概况 在人类医学上,肝损伤是指肝脏受到外界因素的感染,造成的肝脏受损.自精养模式在异育银鲫养殖中广泛采用,高温季节异育银鲫常常在体表看不出病因就大批死亡,解剖发现,肝脏常常呈现肿大、"花肝"、"绿肝"和"红肝"等,广大养殖户不清楚疾病病因,将此类肝损伤统称为"肝胆综合征".

从本质上讲,水华是以蓝藻为载体的物质和能量转换的结果[1].在含营养物质丰富的水体中,有些蓝藻常于夏季大量繁殖,并在水面形成一层蓝绿色而有腥臭味的浮沫,被称为"水华".大规模的蓝藻爆发,被称为"绿潮".中科院南京地理与湖泊研究所的孔繁翔研究员等在2007年对蓝藻水华的形成机制进行了研究,提出了4阶段的理论假设:即蓝藻的生长与水华的形成可以分为休眠、复苏、生长、上浮及聚集4个阶段.每个阶段中,蓝藻的生理特性及主导环境影响因子有所不同.在冬季,水华蓝藻的休眠主要受低温及黑暗环境所影响.春季的复苏过程主要受湖泊沉积表面的温度和溶解氧控制,而光合作用和细胞分裂所需要的物质与能量,决定水华在春季和夏季的生长状况,一旦有合适的气象与水文条件,已在水体中积累的大量蓝藻群体将上浮到水体表面积聚,形成可见的水华[2].水华的出现最根本的原因还是排入水体的污染物远远大于水体环境的自身容量[3].

To evalauate the safety of enrofloxacin for Carassius auratus gibelio,the acute toxicity of enrofloxacin and its influences on blood biochemical indicators were studied,based on the conventional dose of enrofloxacin in aquaculture.The results showed that the median lethal dose and safe dose of enrofloxacin for C.auratus gibelio were 1 949.84 mg/kg and 194.98 mg/kg,respectively.Compared with the control group,the content of serum total protein(TP),glutamic-pyruvic transaminase(ALT),aspartate aminotransferase(AST),and γ-glutamine transferase(γ-GT) were not significantly changed with the continuous oral administration at 20 mg/kg as a conventional dose for 30 days,while after the continuous oral administration at 40 mg/kg,80 mg/kg,160 mg/kg,320 mg/kg for 30 days,the serum AST content was significantly increased by 23%,30%,46%,86%(P<0.05),and the ALT content was significantly increased by 37%,42%,69%,86%(P<0.05),respectively.This study determined the safe dose of enrofloxacin and its administration dose range causing liver dysfunction for C.auratus gibelio,and provided a scientific basis for the safe use of enrofloxacin in C.auratus gibelio.Enrofloxacin at 20 mg/kg as a conventional dose does not result in liver dysfunction in C.auratus gibelio.

黄河中下游面积大约是8.7万平方公里,区内气候湿润,年平均相对湿度为65％～85％,降水时段集中在7-8月,尤其7月下旬(或8月上旬)多有较强的暴雨发生,属于温带季风气候.该区域主要养殖草鱼、黄河鲤鱼、鲢鳙鱼、斑点叉尾鲴、云斑鲴等.

2010年以来,在普安县核桃重点产区开展了优良单株选择,按照丰产性状和坚果品质进行初选和复选,应用多性状综合评定开展决选。初选优株103株,复选优株43株,决选优株12株。优良单株的树冠投影产仁量为0.16～0.87 kg/m2,平均单果重为7.23～16.48 g,壳厚为0.85～1.80 mm,出仁率为51.4%～61.7%。优良单株无性繁殖材料在普安及周边区域可先行推广利用。

In September 2010,the Beijing Wildlife Safari Park imported three giraffes from South Africa.According to China regulation on animal imports,artiodactyls from South Africa must be quarantined.To design a quarantine facility we designed a facility suitable for giraffe quarantine.It was built in one week and used on 14 September and 5 October 2010 for operation of blood collection for quarantine.The results indicated that this giraffe quarantine facility generally performed well.

Glycine soja germplasm resources in 26 counties(districts)of Anhui province were surveyed in September and October,2006,and 34 samples of glycine soja were collected.According to the facts,it can be seen that the glycine soja germplasm resources had the traits of wide distribution,multi-type,various small ecological surrounding types and rich genefic diversity in Anhui province and some suggestions on the glycine soja germplasm resource's investigation and protection were put forward.