集成化企业网络需求分析信息量化模型

集成化企业网络需求分析信息量化模型冯径沈苏彬顾冠群（东南大学计算机科学与工程系,南京２１００９６）集成化企业网络是ＣＩＭＳ网络的典型网络,包括设计制造、控制和管理等各方面的网络集成［１,２］．网络需求分析是网络设计的第一步［３］,它不仅是整个网络设...     

LF-CD-CC过程中钢液温度控制模型

在分析ＬＦ－ＶＤ－ＣＣ过程各阶段热平衡状况的基础上,开发了ＬＦ－ＶＤ－ＣＣ过程中钢液温度控制模型。用该模型模拟计算了ＬＦ－ＶＤ－ＣＣ过程的温度变化。结果表明,该模型对预报过程钢水温度,计算的命中率较高,可用于工业生产．     

土法造纸木素降解之探索Ⅲ.嫩毛竹自然发酵过程中的细菌分离鉴定与嫩竹软化菌的筛选

试验证实,嫩毛竹自然发酵过程中的微生物主要是细菌。分离出并纯化了１００株细菌,其中６０株是芽胞杆菌。将分离出的１００株细菌分别接入石灰预处理过的嫩竹,从中筛选出能使嫩竹进一步软化的菌株３株,也均为芽胞杆菌。对这６０株芽胞杆菌进行了形态学及其生理生化特征的鉴定,按Ｐｒｉｅｓｔ氏等（１９８８年）的数值分类系统分类到组,将３株（３０８,３０９,３１０）对嫩竹软化有明显作用的芽胞杆菌的１株（３０８）鉴定到种,认为是短小芽胞杆菌（Ｂ．ｐｕｍｉｌｕｓ）。另外４０株非芽胞杆菌参阅《伯杰氏系统细菌学手册》第１卷和第２卷,鉴定到科或属,有微球菌、葡萄球菌、李氏杆菌、不动杆菌、肠杆菌科等。     

Leakage of mantle helium from the Liaodong Peninsula, China

The isotopic cumpositions of helium have been investigated in hot spring gases sampled from the Liaodong Peninsula. China. The³He/⁴He ratios range from 0.14 Ra (0.14 times the atmospheric³He/⁴He ratio of 1.40 × 10^-6 to 0.72 Ra.³He/⁴He versus⁴He/²⁰Ne ratios and He contents suggest that a small amount of mantle-derived helium reaches the earth’s surface. Helium iwtope ratios of the hot spring gases show a distribution pattern similar to the regional heat flow values, indicating that the positive thermal anomaly occurring in the rtrea is closely associated with the presence of mantle-derived helium. The observations described above provide some significant evidence that the molten magma originating from partial melting of the upper mantle may have intruded into the continental crust along the activity fault. The coupling of the presence of mantle He and heat flow anomalies to seismic activity in studied region seem to imply that there is an internal relationship between mantle degassing and seismic activity.     

Properties of a supercritical superdiffusion and solutions of its corresponding differential equation

The range and the nonextinction property of a supercritical superdiffusion and solutions of its corresponding differential equation are studied. It is pruved that under a suitable condition, the conditioned superprocess of the supercritical superdiffusion is a subcritical superdiffusion.     

On some tests-based projection pursuit for elliptical symmetry of a high-dimensional distribution

Some test statistics of Kolmogorov type and Cramér-von Mises type based on projection pursuit technique are proposed for the testing problem of sphericity of a high-dimensional distribution. The limiting distributions of the test statistics are derived under the null hypothesis and under any fixed alternative. The asymptotic properties of bootstrap approximation are investigated. Furthermore, for computational reasons, an approximation for the statistics, based on the number theoretic method, is suggested. An erratum to this article is available at .     

Cloning, construction of prokaryotic expression vector and expression ofEscherichia coli cytosine deaminase gene

Cytosine deaminase gene ofEscherichia coli strain H-30 was cloned, and its initiation codon of ‘GTG’ was mutated to ‘ATG’ by PCR. Prokaryotic recombinant expression vector pBV220-CD was constructed. Clone with high enzyme activity were selected by detecting their specific activity of cytosine deaminase. 5-FC(5-FC, 5-fluorocytosine) could induce the lethal toxicity to cells containing active CD gene. DNA sequence analysis indicated that there were 16 altered bases and 5 of them resulted in the alteration of amino acids in predicted peptide by comparing DNA sequence of the clone H-30-CD-11 with high enzyme activity with CD gene reported in Gene Bank.     

稀土元素(镝、钬、铒、铥、镱、镥、钇和钪)高分辨率ICP光谱谱线表与光谱图的编制

讨论并建立了高分辨率光谱仪参数,在带宽为3pm的光谱条件下摄取了稀土元素的高分辨率等离子发射光谱（ICP）,鉴定了在240～450um波长范围内的谱线,和估测了这些谱线的强度．在实验中也观测到了谱线复杂的物理轮廓,包括超精细结构和未完全分辨的定线轮廓．     

胰腺腺泡细胞胞浆游离钙浓度的测定及药物作用的研究

本文建立了用荧光指示利Fura－2测定胰腺腺泡细胞胞浆游离Ca2＋浓度（［Ca2＋］i）的实验技术,包括：胰腺腺泡的分离制备;Fura—2／AM的负载;腺泡悬液的荧光光谱测量等．测定了胰腺腺泡细胞［Ca2＋］i。的静息值和卡巴可促腺泡细胞［Ca2＋］i升高的剂量—效应关系及动力学过程,并研究了柴胡总皂甙对胰腺腺泡细胞［Ca2＋i］的影响．发现0．01mg／ml浓度的柴胡总皂甙使胰腺腺泡细胞［Ca2＋］。明显升高,0．1mg／ml浓度时可使［Ca2＋］。升高到静息值的3倍,提示柴胡总皂甙的促酶分泌作用是通过胞内［Ca2＋］i升高介导的．     

室间隔缺损并发肺动脉高压的外科治疗

总结室内隔缺损（ＶＳＤ）并发肺动脉高压外科治疗经验及效果,探讨手术适应证的选择及术后并发症的处理,以回顾性分析８年来室间隔缺损并发肺动脉高压５２例,手术治愈４９例,死亡３例,术后并发平的发生率为２３．０％,并发症及死亡率均明显低于文献报道,对ＶＳＤ并发肺动脉高压的外科治疗,必须严格选择好手术适应证,早期处理好术后并发症,重视术后的精心治疗。