纺织品硬挺整理机理分析及策略

对于硬挺整理中常见问题产生的原因及机理进行分析探讨并提出针对性解决方案,主要包括布面游离甲醛、鱼腥味、白痕、回软以及硬挺剂的剥除等。合理选择硬挺剂和有效控制工艺可以减少和避免这些常见问题,为后续硬挺整理加工提供必要的借鉴和指导。     

充气式抗浸服保暖层优化设计与性能研究

抗浸服作为冷水域救援人员的防护装备，其内层保暖层的性能对充气式抗浸服的穿着舒适性至关重要。以现有产品的优劣分析和实际使用情况的市场调研结果为基础，对充气式抗浸服的保暖层进行结构设计和优化，并对优化后产品的防护性能进行测试分析。结果表明，充气保暖内层材料的优化以及服装结构的改进设计可显著提升服装的漂浮性和保暖性。     

轧机高压水除鳞系统节能优化控制分析

文章首先浅谈高压水除鳞的基本原理;其次分析高压水除鳞系统能耗增加的主要原因,包括离心泵功率增加引起的、离心泵超负荷运转及喷嘴安装角度不适宜引起的;最后,以减少高压水除鳞过程能耗量,探究相应的节能优化控制方案。     

FEQ: a new flux coordinates based equilibrium solver including both magnetic axis and separatrix

Accurate tokamak plasma equilibrium solution in flux coordinates is crucial for many stability and transport studies. Different approaches for dealing with singularities in solving the nonlinear Grad–Shafranov (GS) equation in flux coordinates or also known as straight field line coordinates are proposed in this paper. The GS equation is solved by iterating the position of grids directly in flux coordinates, and hence, no additional errors are introduced due to mapping process for a convergent solution. The singularity at magnetic axis in flux coordinates is removed by using a novel coordinate transform technique. Different from other techniques previously developed, no assumption in boundary condition at magnetic axis is used. This is consistent with the fact that there is no physical boundary at the magnetic axis. A flux coordinate system with poloidal coordinate chosen as the geometric poloidal angle is proposed. It conquers the difficulty in no definition of poloidal coordinate in flux coordinates at separatrix because of the singularity at x-point(s) in a divertor configuration. It also simplifies the process for computing poloidal flux coordinate during the iteration for solving the nonlinear GS equation. Non-uniform grids can be applied in both radial and poloidal coordinates, which allows it to increase the spacial resolution near x-point(s) in a divertor configuration. Based on the model proposed in this paper, a new Flux coordinates based EQuilibrium solver (FEQ) in tokamaks is developed. The numerical solutions from this code agree well with both the analytic Solov'ev solution and the numerical one from the EFIT code for a divertor configuration in the EAST tokamak. This code can be applied for simulating different equilibria with prescribed shape, pressure and current profiles, i.e. including both limiter and divertor configurations, positive triangularity and negative triangularity, different β, arbitrary magnetic shear profile etc. It provides a powerful and convenient fixed-boundary inverse equilibrium solver including both magnetic axis and separatrix in the solution for tokamak researches.     

基于地面网络SIM卡的北斗三号区域短报文网络安全研究

由于地理环境及成本因素限制，已规模化建设的地面移动通信网络仍然存在未完全覆盖人类活动区域、受突发灾害影响导致服务中断的问题。北斗三号卫星导航系统所特有的区域短报文卫星通信服务可以与地面网络实现互补，同时还具备集成进手机这一技术优势。为了满足大众领域对于轻量、简便的应急通信服务需要，提出了基于移动用户SIM卡认证体系以“不换卡、不换号”提供短报文融合通信的服务模式。针对于北斗系统资源紧缺等限制，提出了一种地面移动网络用户通过北斗短报文接入时的安全应用方案，设计了通过移动网络的密钥预埋机制与结合北斗特性的鉴权加密机制两大关键技术流程。该方案在完成单次报文传输的同时实现了用户认证与安全传输，以极低的协议开销实现了北斗网络下的安全应用，为6G时代星地一体化融合通信网络的研究提供了参考。     

地理信息系统及其在地质矿产勘查中的应用探析

通过地理信息系统的应用可以实现对空间数据的合理有效分析并加以处理，使其在地质矿产勘探中的应用优势得到很好的发挥。随着地理信息系统在地质矿产勘探中应用的不断增多，应用效果越来越好，使地质矿产勘探工作质量和效率越来越高。本文概述了地理信息系统及其功能作用，进而对地理信息系统在地质矿产勘探中的应用价值和实际应用展开了详细、深入地研究与探讨，以促进地质矿产勘探工作质量和效率的提升，推进地理信息系统的持续应用与发展。