利用废弃矿井的压缩空气蓄能发电站

【申请(专利)号】CN200410022747.3(申朗)本发明是一种利用废弃矿井的压缩空气蓄能发电站。由将废弃矿井的井口进行耐压封闭后形成的洞室作为压缩空气贮存洞室,并与空气压缩机、发电机、气轮机、压缩空气输送管道、压缩空气控制阀门、变电换流站、厂房所共同组成,作为蓄能介质的压缩空气是被贮存在由废弃的矿井封闭后形成的洞室内。其最大特点是将废弃矿井的井口进行耐压封闭后形成的洞室作为压缩空气贮存洞室,在电网用电低谷时段时,从电网上取多出社会用电量的富余电能驱动空气压缩机向洞室内充气进行蓄能,而在社会用电高峰时段时,则将压…     

FLUID-BASED SIMULATION APPROACH FOR HIGH VOLUME CONVEYOR TRANSPORTATION SYSTEMS

High volume conveyor systems in distribution centers have very large footprint and can handlelarge volumes and hold thousands of items.Traditional discrete-event cell-based approach to simulatesuch networks becomes computationally challenging.An alternative approach,in which the traffic isrepresented by segments of fluid flow of different density instead of individual packages,is presentedin this paper to address this challenge.The proposed fluid-based simulation approach is developedusing a Hybrid Petri Nets framework.The underlying model is a combination of an extension of aBatches Petri Nets(BPN)and a Stochastic Petri Nets(SPN).The extensions are in the inclusion ofrandom elements and relaxation of certain structural constraints.Some adaptations are also made to fitthe target system modeling.The approach is presented with an example.     

同向双螺杆挤出固体输送现象的描述与分析

利用可视化双螺杆挤出机进行挤出观察实验，记录，描述并分析了同向双螺杆挤出中的固体输送现象，根据现象可把固体输送过程分为三个阶段，在此基础上提出了固体输送的两区物理模型，两区指散粒体区和粘连区，在这两个区域中，物料运动的本质不同，可见对其数学描述也将不同。     

展望纳米医学

将来，科学家可以制造大量纳米装置，它们仅有头发丝的千分之一左右，可以在人体的各处畅游，甚至出入细胞，修复畸变的基因、扼杀刚刚萌芽的癌细胞、捕捉侵入人体的细菌和病毒……     

输送带扣断裂原因分析及改进方案

就输送带扣出现断裂的问题从多方面进行了分析，认为热处理工艺不当以及加工工艺设计不合理是输送带扣断裂的主要原因，并提出了相应的改进方案。     

浅谈增大配电线路输送容量

本文对增大浅谈配电线路输送容量进行了分析，并提出了自己的一些看法。供同行参考学习。     

原油降凝剂研究的进展

对原油降凝剂的结构、合成、降凝机理及应用工艺等方面的研究进展情况进行了评述和讨论。     

车载计量系统的研制

随着散装水泥专用车的推广使用，准确计量成了一个突出的问题，中国建筑材料科学研究院开发研制的散装水泥车载称重系统，成功地解决了这一难题，文章详细介绍了车载计量系统的研制情况。     

PEG-g-poly（aspartamide-co-N,N-dimethylethylenediamino aspartamide）： Synthesis, characterization and its application as a drug delivery system

PEG-g-poly(aspartamide-co-N,N-dimethylethylenediamino aspartamide) (PEG-DMEDA-PASP) was synthesized by two-step ring-opening reactions of polysuccinimide (PSI) with α-methoxy-ω-amino-poly(ethylene glycol) and N,N-dimethylethylenediamine. The polymer structure was confirmed by ¹H NMR and FT-IR. The resultant PEG-DMEDA-PASP with ammonium glycyrrhizinate (AMG) could form polymeric micelles in aqueous solution. The results of transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements revealed that these polymeric micelles were spherical particles with a narrow diameter distribution and that their average diameter was ca. 70 nm. These polymeric micelles had high-loading capacity (58%) and encapsulation efficiency (70%) for AMG. The results of in vitro release experiments showed that these polymeric micelles possessed sustained-release effects, with a release rate of 25% within 3 h and 90% within 24 h.