Autocoro最新技术: e-save

能源成本上涨速度高于纱线价格上涨速度,Autocoro纺纱厂每年的能耗成本约占每年营业额的5％,主要能耗是电能.     

ENHANCED RECOVERY OF MEDIUM CRUDE OIL IN HETEROGENEOUS RESERVOIRS USING AIR INJECTION/IN SITU COMBUSTION—HORIZONTAL WELL TECHNOLOGY

A simple 3-D physical model has been developed to investigate the use of in-situ combustion in heterogeneous reservoirs. Gas over-ride phenomena is one of the major causes of instability of combustion process; gas override results in poor sweep efficiency with subsequent low oil recovery. However, the use of horizontal wells in direct line drive arrangement has shown a great deal of combustion stability and propagation by means of controlling gas override This paper has extended the scope of using horizontal wells in direct line drive configuration in heterogeneous reservoirs. Three cases of reservoir heterogeneity were investigated in this study. In the first case, a dual-layer permeability of sand was used (a high permeability layer on top and a low permeability layer on bottom); in the second case, placement of the aforementioned layers was swapped, and in the third case, a high permeability streak was sandwiched between two low permeability layers of fine sand. The results indicated that a stable combustion front has been achieved in the first two cases with a high oil recovery, however the performance of the combustion process markedly deteriorated when a high permeability streak layer was utilised as a result of a severe low temperature oxidation due to oxygen channelling through the streak, with subsequent poor sweep efficiency and in turn low oil recovery. The use of horizontal wells as producers and injectors in a line drive configuration is beneficial and effective for minimising the effect of reservoir heterogeneity to some extent.     

A Probabilistic Multiperiod Simulation–Optimization Approach for Dynamic Coastal Aquifer Management

Combined simulation–optimization (CSO) schemes are common in the literature to solve different groundwater management problems, and CSO is particularly well-established in the coastal aquifer management literature. However, with a few exceptions, nearly all previous studies have employed the CSO approach to derive static groundwater management plans that remain unchanged during the entire management period, consequently overlooking the possible positive impacts of dynamic strategies. Dynamic strategies involve division of the planning time interval into several subintervals or periods, and adoption of revised decisions during each period based on the most recent knowledge of the groundwater system and its associated uncertainties. Problem structuring and computational challenges seem to be the main factors preventing the widespread implementation of dynamic strategies in groundwater applications. The objective of this study is to address these challenges by introducing a novel probabilistic Multiperiod CSO approach for dynamic groundwater management. This includes reformulation of the groundwater management problem so that it can be adapted to the multiperiod CSO approach, and subsequent employment of polynomial chaos expansion-based stochastic dynamic programming to obtain optimal dynamic strategies. The proposed approach is employed to provide sustainable solutions for a coastal aquifer storage and recovery facility in Oman, considering the effect of natural recharge uncertainty. It is revealed that the proposed dynamic approach results in an improved performance by taking advantage of system variations, allowing for increased groundwater abstraction, injection and hence monetary benefit compared to the commonly used static optimization approach.

     

达涅利厚板坯连铸新技术和样板生产厂

达涅利戴维·迪斯汀顿是达涅利集团中负责板坯连铸机设备设计和供货的一家专业公司,通过与用户密切合作,开发了许多创新设备,如获得专利的INMO结晶器和OPTIMUM最优化扇形段,推出许多先进的连铸技术,如动态轻压下等,极大地促进了连铸技术的发展.正是由于这些先进技术,才有可能使达涅利在近些年来为世界上最先进的连铸板坯生产厂家提供连铸设备,其中包括韩国浦项、德国蒂森克虏伯、中国宝钢和法国阿赛洛米塔尔.介绍了达涅利的这些创新设备和它们在2006年12月份几乎同时试车投产的两家著名钢厂,宝钢(中国)和阿赛洛米塔尔(法国敦克尔克)的使用情况.     

结构性黄土湿陷性指标室内测定方法的探讨

对黄土湿陷性指标的室内测定，国内外都借助标准压密仪，采用单线法或双线法进行。由于多种原因，我国各部委编制的试验规程，对采用何种方法，意见尚未统一。本文首先从人工制备结构性黄土的试验成果出发，讨论了黄土的湿陷线问题，认为非饱和结构性黄土存在湿陷线，且该线与饱和结构性黄土的压密曲线重合。从而说明在此简单应力路径下，单线法和双线法是等价的。接着，从日本大阪海成粘土不同室内压密方法得出的试验结果出发，就天然结构黄土，探讨了常规标准压密试验方法的不足，提议采用等应变压密双线法，来测定结构性黄土的湿陷性指标，从而有利于实际工程应用。     

胰腺癌经动脉灌注化疗指南（草案）

【摘要】 胰腺癌是恶性度最高的实体肿瘤之一。对不能手术切除的胰腺癌，经动脉灌注化疗由于肿瘤局部药物浓度较静脉用药高，可以达到更好的治疗效果，在改善疾病相关症状、延长生存期、减少肝转移及发生肝转移后的治疗上均取得了令人瞩目的成绩。本文在相关概念、禁忌证、适应证、术前准备、操作方法、术后处理及并发症的预防和处理等方面给出了较详尽的规范化建议，旨在帮助国内同行作出合理决策，但不是强制性标准，也不可能包括和解决胰腺癌经动脉灌注化疗中的所有问题。因此，在面对某一患者时，应在充分了解本病的最佳医学证据，结合患者具体病情及其意愿的基础上，为患者制定合理的诊疗计划。
     

孤立性肠系膜上动脉夹层介入治疗五例的护理体会

【摘要】 目的 探讨裸支架腔内血管重建术治疗孤立性肠系膜上动脉夹层（ＳＭＡＤ）的围手术期护理。方法 对采用裸支架载瘤动脉腔内血管重建术治疗孤立性的５例患者，予完善的术前准备，针对性的术后观察、护理。结果 在围手术期精心护理下，４例腹痛症状患者术后３周腹痛消失；５例患者介入治疗均获得成功，术后无并发症发生，随访３至１２个月效果满意。结论 术前充分准备，术后细致观察、护理，为孤立性ＳＭＡＤ介入治疗提供有价值的护理经验。
     

综合性放射防护措施在介入治疗防护中的应用

【摘要】 目的 探讨综合性放射防护措施在介入治疗防护中的应用价值。方法 在８４例介入手术治疗中联合应用床下铅橡胶帘、铅玻璃防护屏、铅防护服、铅围脖、铅眼镜及距离等对介入操作人员进行综合性防护。利用ＦＪ?鄄２０００个人剂量仪监测Ｘ射线辐射剂量，并对相关数据进行统计分析。结果 床下铅橡胶帘防护效率为９３．４％；铅玻璃防护屏防护效率为９３．５％；铅防护服防护效率为８８．４％；这些放射防护器材前后Ｘ线辐射剂量差异均具有统计学意义（Ｐ ＜ ０．０１）。距球管１ ｍ处 Ｘ线衰减量为５８．６％，距球管３ ｍ处的Ｘ线衰减量为８６．４％。１ ｍ与２ ｍ之间，２ ｍ与３ ｍ之间的辐射剂量差异均具有统计学意义（Ｐ ＜ ０．０１）。结论 综合性防护措施在介入操作中可有效降低Ｘ射线辐射、减少对介入操作人员身体危害。
     

锁骨下动脉闭塞机械再通的方法研究

目的研究锁骨下动脉闭塞血管内机械再通方法和疗效。方法选择３２例症状性锁骨下动脉闭塞患者行血管内机械再通治疗，观察再通率及疗效。结果３２例锁骨下动脉闭塞患者中，用不同方法成功完成血管内机械再通后行血管内支架成形术，术后全部患者后循环缺血症状和上肢缺血症状明显改善。结论采用适当方法行机械再通治疗锁骨下动脉闭塞安全、可行。