城市堤防工程设计的体会与思考

在堤防建设中,城市堤防的新建和加固占有相当比例。建设城市堤防工程,不能与城市总体建设截然分开。山丘区城市的堤防设计中存在堤防建设与城市建设之间的矛盾,设计中应根据各堤防的实际情况,采用合理的设计方案,并结合采用适宜的景观设计,较好地解决这些矛盾。     

高温深层缓速酸化优化研究及应用

针对临南油田酸化效果差的问题,从油藏地质特点出发,分析了制约其酸化效果的主要因素,即地层温度、铁离子二次沉淀、地层深部改造等。通过室内研究,优选出一种高性能的缓速酸,该酸液具有溶蚀率高、缓速性能好、能有效防止铁离子二次沉淀、与地层水配伍性好等特点。同时还对酸化施工工艺进行了优化,配套了适合的返排工艺。该工艺在现场应用后,酸化效果得到了明显的改善。     

基于决策树模型在油田公司项目决策中的应用

一般而言,在经济环境中,投资某一项目都存在大量不确定因素,其经济参数也并非确定不变。在油田公司的投资项目中,其常见的参数取值是离散型的,而决策树模型是一种向决策者提供关于系列性决策问题的树型数据图形,在处理此类问题上是最为合适的。本文通过实例提供了解决此类问题的方法。     

BaO—CaO—Na2O—CaF2—Cr2O3渣系的不锈钢脱磷

测定了１５００℃时磷在ＢａＯ－ＣａＯ－Ｎａ２Ｏ－ＣａＦ２－Ｃｒ２Ｏ３渣子和０．１２Ｃ－０．７１Ｓｉ－１８Ｃｒ不锈钢熔体之间的分配比，试验结果表明，该渣系的不锈钢脱磷能力比ＣａＯ基渣好，与ＢａＯ基渣相当。     

奇异摄动系统的极限解

本文在前人工作的基础上,利用广义函数理论讨论了一般形式下的奇异摄动系统E(ε)(?)=A(ε)x+B(ε)u在v→0~+时的极限解问题,得出了这一极限解存在的充要条件。     

The effect of insulin-like growth factor-1 on cyclic change of tendon cell

BACKGROUND: Myoclonus is a possible side effect of opioid therapy, and have been described following systemic as well as spinal application. CASE REPORT: We report the case of a patient with metastatic carcinoma of the rectum who developed myoclonus following administration of high-dose epidural combined with iv morphine. This complication occurred with maximum daily doses of 300 mg epidurally and 80 mg intravenously and disappeared completely after dose reduction. Treatment trials are presented, the pathophysiology of the myoclonus is discussed. CONCLUSION: For treatment of opioid-induced myoclonus a dose reduction or a change of the opioid should be considered as well as symptomatic treatment with benzodiazepines or baclofen.     

加强信息化建设,提高企业管理水平和竞争能力

分析涟钢信息化建设的总体目标、具体做法及已经取得的成绩 ,展望公司信息化建设前景 ,提出工厂企业搞好信息化建设的 9项举措     

C－BN衬底上金刚石的异质外延生长研究

用热灯丝ＣＶＤ方法在Ｃ－ＢＮ单晶衬底上制备出金刚石膜，并且在Ｃ－ＢＮ（１００）面上观察到金刚石的异质外延。     

Constraint-based beautification and dimensioning of 3D polyhedral models reconstructed from 2D sketches

3D models reconstructed from 2D sketches are inaccurate because of the inherent inaccuracies in the input and the reconstruction method. It is therefore necessary to “beautify” them before use in CAD systems. We present a method that detects geometric constraints, such as parallel and orthogonal faces, present in the reconstructed model and then selects a subset that constrains the object sufficiently and consistently. The subset selection algorithm first prioritizes the constraints depending on their type and then uses a novel method, based on quasi-Newton optimization, to detect and eliminate redundant and inconsistent constraints. The remaining constraints then define the dimensions of the model fully and consistently. Results from our implementation show that the method can beautify and dimension recovered 3D models correctly at acceptable speed.