O3-BAC工艺对受污染河水中主要污染物去除效果分析

对预臭氧曝气生物活性炭滤池(O3-BAC)工艺处理低碳源北运河通州段原水试验效果进行分析,结果表明:回流比为1∶1时,系统对CODC r、NH3-N的平均去除率分别为42%、94.3%,均高于回流比0.5∶1时;向系统反硝化单元按C/N=3∶1投加外碳源后,TN去除率增长至34.5%,而此时系统对NH3-N和CODC r的去除率变化不大;系统气水比由6∶1降低至4∶1后,TN去除率继续增长至42.5%,CODC r和NH3-N去除率变化幅度不大,此时出水主要污染物指标均达到《城市污水再生利用景观环境用水水质》(GB/T18921-2002)观赏性河道类水质标准。     

DNC技术在柔性制造中心的开发与应用

DNC技术是目前制造业的先进技术，是数控技术、通信技术、计算机网络和数据库等技术的综合应用。通过新一代DNC系统在柔性制造中心的实施，阐述了系统信息集成、制造信息管理理、设备状态在线浏览及远程监控等功能的实现与应用。     

Unified full implication algorithms of fuzzy reasoning

This paper discusses the full implication inference of fuzzy reasoning. For all residuated implications induced by left continuous t-norms, unified α-triple I algorithms are constructed to generalize the known results. As the corollaries of the main results of this paper, some special algorithms can be easily derived based on four important residuated implications. These algorithms would be beneficial to applications of fuzzy reasoning. Based on properties of residuated implications, the proofs of the many conclusions are greatly simplified.     

Nd3+A位置换对(Pb0.5Ca0.5)(Fe0.5Nb0.5)O3陶瓷微波介电性能的影响

研究了Nd3+离子A位置换改性(Pb0.5Ca0.5)(Fe0.5Nb0.5)O3陶瓷的微波介电性能.[(Pb0.5Ca0.5)1-xNdx](Fe0.5Nb0.5)O3(PCNFN)陶瓷的微波介电性能得到改善是由于少量过剩的Nd3+与(Pb,Ca)2+的固溶能够消除氧空位.当x=0.02时,能够形成单相的钙钛矿相,随着Nd3+置换量的增加,过剩的Nd3+将导致第二相焦绿石的形成,焦绿石会恶化PCNFN的微波介电性能.PCNFN介电性能随x的增加而下降是由于焦绿石相随x增加的结果.当x=0.02-0.05,PCNFN陶瓷有很好的微波介电性能,介电常数K>100,Qf值为5385-5797GHz,频率温度系数TCF随Nd3+含量的增加从正的变为负的.     

A revisit to the common mean problem: Comparing the maximum likelihood estimator with the Graybill-Deal estimator

For estimating the common mean of two normal populations with unknown and possibly unequal variances the well-known Graybill-Deal estimator (GDE) has been a motivating factor for research over the last five decades. Surprisingly the literature does not have much to show when it comes to the maximum likelihood estimator (MLE) and its properties compared to those of the GDE. The purpose of this note is to shed some light on the structure of the MLE, and compare it with the GDE. While studying the asymptotic variance of the GDE, we provide an upgraded set of bounds for its variance. A massive simulation study has been carried out with very high level of accuracy to compare the variances of the above two estimators results of which are quite interesting.     

纳米WO3薄膜的制备及其光学性能研究

以钨酸钠为原料，采用溶胶技术结合浸渍镀膜方法制备出WO3薄膜，利用透射电子显微镜、紫外-可见分光光度计、X射线衍射仪对薄膜的性质进行了研究。实验结果表明：草酸浓度的大小对产物粒径和紫外-可见透过光谱特性均有影响，随着草酸浓度的增大，产物的粒径减小，在可见光附近的透过率增大。热处理温度对产物的光透过性有影响，处理温度越高，光透过率越大。     

Fuzzy h-ideals of hemirings

A characterization of an h-hemiregular hemiring in terms of a fuzzy h-ideal is provided. Some properties of prime fuzzy h-ideals of h-hemiregular hemirings are investigated. It is proved that a fuzzy subset ζ of a hemiring S is a prime fuzzy left (right) h-ideal of S if and only if ζ is two-valued, ζ(0) = 1, and the set of all x in S such that ζ(x) = 1 is a prime (left) right h-ideal of S. Finally, the similar properties for maximal fuzzy left (right) h-ideals of hemirings are considered.     

Redefined fuzzy Hv-submodules and many valued implications

This paper considers a relationship between fuzzy sets and algebraic hyperstructures. A generalization of ideas presented by Davvaz [B. Davvaz, Fuzzy H_v-submodules, Fuzzy Sets Syst. 117 (2001) 477-484] and Bhakat and Das [S.K. Bhakat, P. Das, (∈, ∈ ∨ q)-fuzzy subgroup, Fuzzy Sets Syst. 80 (1996) 359-368], is presented. In fact, the main purpose of this paper is to introduce and study a new sort of fuzzy H_v-submodule of an H_v-module called (∈, ∈ ∨ q)-fuzzy H_v-submodules. These fuzzy H_v-submodules are characterized by their level H_v-submodules. The concept of a fuzzy H_v-submodule with thresholds is introduced, and some interesting properties are investigated.     

西部凹陷曙4—4—03井区潜山储层研究

阐述了曙4－4－03井区潜山储层特征及其分布规律,分析了构造,岩石性质等因素对储集性质的影响,通过应力场分析和利用5700,测井技术,对潜山裂缝的倾角,倾向以及变化趋势进行了描述,为该区的滚动勘探开发提供了地质依据,。     

法舒地尔对大鼠脑缺血再灌注损伤炎症反应的影响

目的: 观察法舒地尔对大鼠脑缺血再灌注损伤炎症反应的影响,探讨其抗炎机制。方法: 大脑中动脉线栓法(MCAO)制作大鼠局灶性脑缺血再灌注损伤模型,缺血1.5h再灌注24h。法舒地尔术前腹腔注射给药15mgkg,术后12h再次给药。术后对大鼠神经功能进行评分,TTC染色观察脑梗死体积;用干湿重法测定脑含水量;分光光度法测定髓过氧化物酶(MPO)活性;伊文思兰法(EB)测定血脑屏障的损伤程度;免疫组化检测大鼠脑缺血区细胞间黏附分子-1(ICAM-1)、血管细胞黏附分子-1(VCAM-1)、NF-κBp65的表达;ELISA法检测IL-8的含量;Westernblot法检测单核细胞趋化蛋白-1(MCP-1)和核抽提物中NF+κBp65蛋白的表达;RT-PCR检测NF-κBp65mRNA的表达。结果: 法舒地尔能明显改善脑缺血再灌注损伤大鼠神经缺陷症状,缩小脑梗死体积,明显降低缺血侧脑组织的含水量、EB含量及MPO活性;显著抑制ICAM-1.VCAM-1.L8和MCP-1蛋白的表达;降低NF-κBp65mRNA和蛋白的表达;减少脑组织核抽提物中NF+κBp65的蛋白量(K0.05vsMCAO组)。结论: 法舒地尔通过抑制NF-κBp65的活化进而抑制黏附分子及趋化因子的表达,减轻脑缺血再灌注损伤的炎症反应。