试析基于Node.js的前后端分离框架的实现

首先对Node.js技术平台的基本含义进行概述,从前后端分离框架的架构模型、前后端分离框架组成两个方面,对基于Node.js的前后端分离框架设计要点进行解析,并以此为依据,提出基于Node.js的前后端分离框架的实现对策。

氢能电解槽及分离框架的性能优化与可持续发展探究

文章旨在优化氢能电解槽及分离框架的性能,以推动氢能的可持续发展。通过对氢能电解槽的设计和操作参数进行优化,可以提高电解效率和产氢速率。同时,研究人员还提出了一种新的分离框架,用于提取纯度高且无杂质的氢气。通过实验和理论分析发现,改进后的电解槽和分离框架在产氢效率和纯度方面都取得了显著的效果。该研究结果对于推动氢能产业的可持续发展、实现清洁能源转型具有重要意义。

基于不可分离小波框架变换的多聚焦图像融合算法

为解决多聚焦图像融合问题,提出了一种基于不可分离小波框架(NWF)变换的融合算法:首先,对各原图像进行NWF变换;然后,根据变换后系数计算图像的对比度量测,融合处理为基于对比度量测的系数选取过程,并对选取后的系数进行一致性校验;最后,对组合后的系数进行NWF逆变换,得到融合后的图像.实验结果表明,该算法能够较好地解决多聚焦图像融合问题.

龙门框架分离式护栏清洗机的研制

针对城市道路护栏清洗效率普遍不高的现状,提出了一种新型的护栏清洗机本体结构,实现对护栏和支墩的全面清洗。根据该清洗原理,建立了栏杆和支墩的清洗模型,并对其清洗过程进行了运动分析,同时对清洗机的机械结构和电气控制进行了阐述。该机构的护栏清洗机具有结构简单、操作方便,自动化程度高等优点。

分离式框架桥结构有限元数值分析

为了研究分离式框架桥的结构计算问题以及探讨现有的框架桥设计软件的应用,以三跨分离式框架桥为例,采用MADIS CIVIL有限元分析软件对分离式框架桥结构进行数值分析,并将分离式框架桥的边孔、中孔当作单跨框架桥用以做对比计算。从计算结果分析可见,作用在框架桥边墙上的侧向土压力对框架桥结构内力影响很大,分离式框架桥各孔的结构内力与按单跨框架桥计算的结构内力差额较大。由此表明,框架桥设计软件的单跨框架桥计算模块不宜用于检算分离式框架桥,框架桥设计软件需要进一步完善并有待增加分离式计算模块。

厚度式晶体管框架分离技术

探讨根据框架厚度进行框架分离的基本原理和要求。

基于前后端分离架构构建医疗元数据管理信息系统

元数据管理信息系统采用大量接口对接方式与业务系统实现元数据信息管理与共享,传统架构的元数据管理信息系统需要在系统界面功能实现以外进行接口开发,以满足元数据管理信息系统与业务系统进行接口对接的需求。采用SpringBoot与Vue前后端分离架构构建医疗元数据管理信息系统,实现系统全业务功能接口化,解决传统架构元数据管理信息系统大量额外接口开发的问题,同时利用SpringBoot框架面向切面编程技术,高效实现接口鉴权与接口调用日志等接口开发的核心问题。

零售价格框架对消费者价差退货的影响研究

以价格框架效应为基础,从认知闭合需要视角出发,探讨零售价格框架对消费者价差退货产生影响的作用机理。结果表明:零售价格框架中的整合价格框架对消费者价差退货具有显著作用,分离价格框架对消费者价差退货影响并不显著。认知闭合需要对消费者价差退货具有显著影响,且在零售价格框架对消费者价差退货影响中具有显著中介作用。研究结论为零售企业如何通过价格框架降低消费者价差退货提供了新思路。

城市道路护栏清洗机的研制

针对城市道路护栏难以清洗的现状,提出了一种龙门框架分离式护栏清洗机本体结构,作业时清洗机跨立在护栏上,实现对护栏和支墩的全面清洗.根据该清洗原理,建立了栏杆和支墩的清洗模型,并对其清洗过程进行了运动分析,同时对清洗机的机械结构和电器控制进行了阐述.该清洗机具有结构简单,操作方便,自动化程度高等优点.

分离式框架桥顶进下穿多股铁路线路施工技术

近年来,随着我国铁路及全国城镇化建设的发展,城市道路下穿铁路工程越来越普遍,为不影响铁路行车,城市道路多采用框架下穿顶进施工方法。文章结合福利巷框架桥下穿陇海铁路的案例,详细阐述了分离式框架桥顶进下穿多股线路的施工技术,为今后类似工程积累经验。

Molecular Simulation of CO2/H2 Mixture Separation in Metal-organic Frameworks： Effect of Catenation and Electrostatic Interactions

In this work grand canonical Monte Carlo simulations were performed to study gas separation in three pairs of isoreticular metal-organic frameworks (IRMOFs) with and without catenation at room temperature.Mixture composed of CO2 and H2 was selected as the model system to separate.The results show that CO2 selectivity in catenated MOFs with multi-porous frameworks is much higher than their non-catenated counterparts.The simulations also show that the electrostatic interactions are very important for the selectivity,and the contributions of different electrostatic interactions are different,depending on pore size,pressure and mixture composition.In fact,changing the electrostatic interactions can even qualitatively change the adsorption behavior.A general conclusion is that the electrostatic interactions between adsorbate molecules and the framework atoms play a dominant role at low pressures,and these interactions in catenated MOFs have much more pronounced effects than those in their non-catenated counterparts,while the electrostatic interactions between adsorbate molecules become evident with increasing pressure,and eventually dominant.

A Framework for the Systematic Design of Hybrid Separation Processe

The design of optimal separation flow sheets for multi-component mixtures is still not a solved problem This is especially the case when non-ideal or azeotropic mixtures or hybrid separation processes are considered. We review recent developments in this field and present a systematic framework for the design of separation flow sheets. This framework proposes a three-step approach. In the first step different flow sheets are generated. In the second step these alternative flow sheet structures are evaluated with shortcut methods. In the third step a rigorous mixed-integer nonlinear programming （MINLP） optimization of the entire flow sheet is executed to determine the best alternative. Since a number of alternative flow sheets have already been eliminated, only a few optimization runs are necessary in this final step. The whole framework thus allows the systematic generation and evaluation of separation processes and is illustrated with the case study of the separation of ethanol and water.

CO_2/CH_4 and CH_4/N_2 separation on isomeric metal organic frameworks

Two isomeric metal-organic frameworks(MOFs) with 2-dimensional(2D) and 3-dimensional(3D) topologies both comprised of Cu(Ⅱ) and OTf(OTf = trifluoromethanesulfonate) ions were synthesized and characterized.The CO_2,CH_4 and N_2 adsorption properties of the two isomeric MOFs were investigated from 263 K to 298 K at0.1 MPa.The results showed that the 2D MOF exhibited a higher selectivity for CO_2 from CO_2/CH_4 and CH_4from CH_4/N_2 compared to the 3D MOF,even though it possessed a lower surface area and pore volume.The higher adsorption heats of gases on the 2D MOF inferred the strong adsorption potential energy in the layered MOFs.Dynamic separation experiments using CO_2/CH_4 and CH_4/N_2 mixtures on the two MOFs proved that the2 D MOF had a longer elution time than the 3D MOF as well as better separation abilities.

房屋增层改造的设计探讨

对房屋增层改造采用整体式外套框架与分离式外套框架进行了方案比较 ,结果表明 ,采用整体式外套框架结构方案更经济 。

Porous zinc(Ⅱ)-organic framework with potential open metal sites:Synthesis,structure and property

Reaction of Zn(NO3)2.6H2O with 5-(isonicotinamido) isophthalic acid(H2INAIP) in N,N-dimethylformamide(DMF) affords a new three-dimensional(3D) coordination polymer {[Zn(INAIP)(DMF)].0.5DMF.4H2O}n(1).The X-ray crystallographic structural analysis reveals that complex 1 is a 3D porous framework containing a potential open metal site inside the pores.Topology analysis confirms that complex 1 is a two-fold interpenetrated(10,3)-b net with both metal ion and ligand acting as 3-connecting nodes.The thermal stability,variable temperature X-ray diffraction pattern and N2 adsorption property of the complex are investigated.

A water-stable fcu-MOF material with exposed amino groups for the multi-functional separation of small molecules

The energy-efficient purification of methane from C2-hydrocarbons is of great significance for the upgrading of natural gas. So does the capture of carbon dioxide for remission of greenhouse effect. It is well established that some functional sites, such as open metals sites, Lewis basic nitrogen sites and fluorine groups, have shown significantly enhanced affinity toward more polarizable molecules. Thus, a water-stable Eu3+-based fcu-metal-organic framework(MOF)(compound 1) with amino functional groups has been successfully constructed through a reticular chemistry approach.As a result, the activated compound 1 exhibits moderately high uptakes of C2-hydrocarbons, but a less obvious adsorption of CH4 at the same conditions. Among them, the adsorption capacity of C2 H2 is up to 143.6 cm3 cm-3 and a relatively high selectivity of C2 H2/CH4(107.7) is obtained at near room temperature. Moreover, compound 1 is also validated as an exceptional adsorbent for CO2 capture, with the fairly high capacity of CO2(92.6 cm3 cm-3) and CO2/N2 selectivity(151.7) at ambient conditions. The excellent performance of compound 1 is mainly driven by the exposed amino functional groups within the contracted pores. Such effect thus leads to the achievement of dual-functional platform for methane purification and carbon dioxide capture. Furthermore, compound 1 features a satisfactory water stability,which is confirmed by the powder X-ray diffraction(PXRD)analysis and the retest of porosity after being soaked in water.