VS自定义向导模板的应用研究

利用VS现有提供的向导模板生成的工程,须在工程多处添加代码,较为费时,而自定义向导模板却能很好地简化这一问题,一次开发多处使用。论述了VS自定义向导模板的原理,以及自定义向导模板的实现细节,并举例说明。

基于Internet的产品客户化定制平台

客户化定制平台是客户化定制实现的信息技术基础和关键。提出了基于 Internet的产品客户化定制平台框架模型 ,并通过某一企业客户化定制平台的建设工作 。

ObjectARX绘制道路等高线技术

在场地竖向设计中,道路等高线起着重要的作用。首先,现场施工阶段,施工人员可依据等高线方便快捷地确定道路标高,为精细化施工创造条件。其次,方案设计阶段,在道路的平面位置以及控制点标高确定以后,生成道路等高线。

翰林汇“写作之星”5.0版DIY辅助写作好帮手

作为一个编辑,我每天都要接触很多文章,有的时候还要亲自写作,时间一长经常会有江郎才尽的感觉,所以我经常幻想着是不是可以有一种软件可以很好地帮助我写作呢?其实,这样的软件早就有了,我可能一直都没有注意,或者是没有机会接触,要是听别人说也不相信,但是当我最近拿到了翰林汇《写作之星》5.0版并且使用以后,我发现,它正是我需要的好软件。

抗击“非典”,我们在行动——PowerPoint演示文稿的制作

收到这篇稿件是在4月底,当时“非典”正在肆虐,小编正在考虑怎样组本期稿,汪老师和陈老师真是挺有新闻敏感度呢!时至今日,“非典”带给人们心理上的恐惧正在渐渐退去,不过,借用一句很老土的话:挑战与机遇并存,相信汪老师和他的学生们、那些在“非典”时期进一步体验网络教学的师生以及我们每一个人从中得到的收获都能长存心间。

Cooperative structure-directing effect of choline cation and *BEA zeolite in the synthesis of aluminogermanosilicate IWR zeolite

In this contribution,we report the cooperative structure-directing effect of choline hydroxide and aluminosilicate*BEA zeolite in the synthesis of aluminogermanosilicate IWR zeolites for the first time.*BEA zeolites,at variance with any other aluminosilicate zeolites,can serve as heterogeneous seeds for the growth of IWR zeolites and play a cooperative structure-directing role.The crystallization process was investigated using multiple techniques to characterize a series of solid products obtained with various crystallization times.The experiments clearly showed the dissolution of the*BEA zeolite and of an intermediate CDO-type structure.A plausible mechanism for the novel cooperative synthesis has been proposed.The crystallization of the IWR zeolite involves several steps,among which the crucial one is believed to be the reassembly of the building units produced from the decomposition of*BEA zeolite seeds,induced by choline molecules.Having similar structure and common building units(four-,five-,and six-membered rings)with the IWR zeolite,the*BEA zeolite is capable of promoting the reassembly of the building units and can thus play a cooperative structure-directing role.By highlighting the cooperative structure-directing effect of organic molecules and heterogeneous seeds,this study opens up new perspectives for the synthesis of target zeolites that are difficult to prepare by traditional methods.This new synthetic route is also expected to shed light on the discovery of novel zeolites.

CFD gas–liquid simulation of oriented valve tray

Computational fluid dynamics(CFD) has recently emerged as an effective tool for the investigation of the hydraulic parameters and efficiency of tray towers.The computation domain was established for two types of oriented valves within a tray and meshed into two parts with different grid types and sizes.The volume fraction correlation concerning inter-phase momentum transfer source was fitted based on experimental data,and built in UDF for simulation.The flow pattern of oriented valve tray under different operating conditions was simulated under Eulerian-Eulerian framework with realizable k-ε model.The predicted liquid height from CFD simulation was in good agreement with the results of pressure drop and volume fraction correlations.Meanwhile,the velocity distribution and volume fraction of the two phases were demonstrated and analyzed,which are useful in design and analysis of the column trays.

Application of navigation template to fixation of sacral fracture using three-dimensional reconstruction and reverse engineering technique

Objective： To provide a new method in the fixation of sacral fracture by means of three-dimensional reconstruction and reverse engineering technique. Methods： Pelvis image data were obtained from threedimensional CT scan in patients with sacral fracture. The data were transferred into a computer workstation. The threedimensional models of pelvis were reconstructed using Amira 3.1 software and saved in STL format. Then the threedimensional fracture models were imported into Imageware 9.0 software. Different situations of reduction （total reduction, half reduction and non-reduction） were simulated using Imageware 9.0 software. The best direction and location of extract iliosacral lag screws were defined using reverse engineering according to these three situations and navigation templates were designed according to the anatomic features of the postero-iliac part and the channel. The exact navigational template was made by rapid prototyping. Drill guides were sterilized and used intraoperatively to assist in surgical navigation and the placement of iliosacral lag screws. Results： Accurate screw placement was confirmed with postoperative X-ray and CT scanning. The navigation template was found to be highly accurate. Conclusion： The navigation template may be a useful method in minimal-invasive fixation of sacroiliac joint fracture.

Facile construction of quasi 1D trimanganese tetraoxide nanostructures via soft templating

Self-assembly of nanocrystals can not only lead to a better understanding of inter-particle acting force, but also enable rational building of complex and functional materials for future nanodevices. Here by utilizing polyvinylpyrrolidone （PVP） as the as capping and structure directing agents, hierarchical Mn304 architectures involving coil-like nanorings, hexagonal nanoframes, and nanodisks are conveniently synthesized by a one-pot solution method. The sophisticated assemblies are proven to be me- diated by the PVP soft templates formed at varied concentrations. The driving forces of self-assembled complex nanostructures and the unique role of PVP concentration are discussed. Magnetic properties of the as assembled Mn3O4 rings are also studied by a SQUID system, which shows the typical side effect of Curie temperature.