摘要：The increase to the proportion of fluxed pellets in the blast furnace burden is a useful way to reduce the carbon emissions in the ironmaking *** this study,the interaction between calcium carbonate and iron ore powder and the mineralization mechanism of fluxed iron ore pellet in the roasting process were investigated through diffusion couple *** electron microscopy with energy dispersive spectroscopy was used to study the elements’diffusion and phase transformation during the roasting *** results indicated that limestone decomposed into calcium oxide,and magnetite was oxidized to hematite at the early stage of *** the increase in roasting temperature,the diffusion rate of Fe and Ca was obviously accelerated,while the diffusion rate of Si was relatively *** order of magnitude of interdiffusion coefficient of Fe_(2)O_(3)-CaO diffusion couple was 10^(−10) m^(2)·s^(−1) at a roasting temperature of 1200℃for 9 ***_(2)Fe_(2)O_(5) was the initial product in the Fe_(2)O_(3)-CaO-SiO_(2) diffusion interface,and then Ca_(2)Fe_(2)O_(5) continued to react with Fe_(2)O_(3) to form CaFe_(2)O_(4).With the expansion of the diffusion region,the sillico-ferrite of calcium liquid phase was produced due to the melting of SiO_(2) into CaFe_(2)O_(4),which can strengthen the consolidation of fluxed ***,andradite would be formed around a small part of quartz particles,which is also conducive to the consolidation of fluxed *** addition,the principle diagram of limestone and quartz diffusion reaction in the process of fluxed pellet roasting was discussed.

摘要：We design and fabricate compact, low loss, and high port-count optical power splitters of 1 × 128 and 2 × 128 using silica-based planar lightwave circuit （PLC） technology on 6 inch quartz substrate. PLC technology is mainly based on plasma enhanced chemical vapor deposition, photolithography, and etching. The measured results show that the insertion loss, uniformity, and wavelength-dependent loss of 1 ~ 128 and 2 x 128 optical power splitters are less than 23, 1.43, and 0.92 dB and 23.3, 1.8, and 1.3 dB, respectively, in the wavelength range from 1.26 to 1.65/ma. The polarization-dependent losses are less than 0.16 and 0.2 dB, respectively, in the wavelengths of 1.31, 1.49, and 1.55 l/in.

摘要：In this paper, we designed a thermo-optic variable optical attenuator (VOA) based on quartz substrate, which consists of a Mach-Zehnder interferometer (MZI) and a thin film heater above the phase-modulation arm. The transmission properties of the waveguide and attenuation characteristics of the device have been simulated by beam propagation method (BPM), and the simulated results illustrated that the designed VOA had good performance.

摘要：quartz、《卫报》:放弃还是加入“付费墙”?据4月28日微信公号“传媒1号”,4月14日,美国石英财经网(quartz)宣布放弃它于3年前推出的付费墙。quartz在成立之初,是“拒绝付费墙”的忠实拥趸,这一方案十分有效。据美国《广告时代》(Ad Age)数据,quartz于2016年的全年营收约3000万美元(折合人民币约1.96亿元);2017年,超70万用户订阅quartz的邮件通讯。但2019年quartz突然宣布设立“付费墙”(Paywall)——当读者阅读超过10篇文章时,会收到加入quartz会员的邀请,价格是每年100美元(折合人民币约656元)或每月15美元(折合人民币约98元)。

摘要：前言：纸媒君转型到新媒体趋近一年,一直埋头苦干,很少抬头看天,目的是为了能够更好地理解这个时代的媒体环境变迁。一年下来,收获很多,也希望能够总结一下自己的所做所看所想。我将用一个系列的文章来阐述＂你该以什么角色参与到新媒体中＂这个话题。话题将分为三个部分,内容方面：《工匠师与创意快手》;运营方面：《新媒体的流量从何而来》：盈利模式方面：《广告的死亡与资本的想象》。

摘要：本文设计的基于quartz和Spring的可视化代理定时任务的方案可以让使用者直观的看到系统中任务调度的情况,有效管理系统中的作业任务,提高定时任务调度的质量和效率。

摘要：自2009年以来，标致就已经在汽车市场上占有优势。标致quartz概念车的全新亮相是下一代高性能SUV车型设计的雏形。

摘要：简要介绍了Symbian系统的特点和系统组成，指出开发流程中交叉开发编译以及开发调试需要注意的问题，比较了Symbian的开发框架quartz和微软的基于Win32应用的开发框架 MFC之间的设计思想的异同，并结合实践探讨了适合团队开发的常用设计模式。

摘要：本文介绍了quartz框架的功能和特点,将quartz框架和Spring框架进行整合,设计并实现了一个动态任务调度系统,该系统简化了Java EE Web系统中任务调度功能的开发,使得任务调度变的灵活和简单。

摘要：针对开源作业调度框架quartz存在的缺点,设计一种可自定义作业的改进型调度系统,能够应用于大多数的作业调度场合.系统采用了并发技术和线程池,可以有效应对系统的掉电与重启,并能够根据用户的需要,添加自定义的任务作业.系统也提供了较为完善的定时调度功能与良好的扩展性,可以被广泛地应用于各项作业调度场景中.