囊腔型肺癌的诊疗进展

囊腔型肺癌(lung cancer associated with cystic airspaces,LCCA)是一种影像学上表现为肿瘤内或边缘存在囊性空腔的肺癌类型。由于易被误诊或漏诊,LCCA患者的预后不良,因此需要更多临床研究来揭示其特点。目前已有4种影像学分类系统,并且近年来对LCCA的关注度逐渐升高,尤其是对其影像学特征进行了一定的研究。既往结果显示,LCCA的病理特征与影像学表现存在相关性,但对于与肺癌相关的驱动基因突变和分子分型的研究仍不充分。由于LCCA难以早期诊断,预后较一般类型肺癌差,本文综述了LCCA的定义、病因与发病机制、影像学特征与诊断依据、组织学和病理学特征及预后等方面的研究进展,以期为临床决策提供参考。

Fretting Wear Characteristics of Nuclear Fuel Cladding in High-Temperature Pressurized Water

In pressurized water reactor(PWR),fretting wear is one of the main causes of fuel assembly failure.Moreover,the operation condition of cladding is complex and harsh.A unique fretting damage test equipment was developed and tested to simulate the fretting damage evolution process of cladding in the PWR environment.It can simulate the fretting wear experiment of PWR under different temperatures(maximum temperature is 350℃),displacement amplitude,vibration frequency,and normal force.The fretting wear behavior of Zr-4 alloy under different temperature environments was tested.In addition,the evolution of wear scar morphology,profile,and wear volume was studied using an optical microscope(OM),scanning electron microscopy(SEM),and a 3D white light interferometer.Results show that higher water temperature evidently decreased the cladding wear volume,the wear mechanism of Zr-4 cladding changed from abrasive wear to adhesive wear and the formation of an oxide layer on the wear scar reduced the wear volume and maximum wear depth.

管理会计助力塑造创新思维、赋能企业高质量发展

管理会计不仅有战略管理与价值创造的功能,而且能够提升企业经营管理水平、防范企业风险、优化资源配置、提升人力资本价值,对助力我国实现高质量、现代化发展目标具有重要意义。毫无疑问,经济发展离不开企业创新,企业创新的关键是如何培养具有创新思维的人才。对于一个成功的企业,理念创新远远高于技术创新,学术研究也是如此,管理会计不同于财务会计的价值和意义在于,管理会计更能体现“理念大于规则、过程胜于结果”,这与企业创新思维高度一致。故而,未来管理会计人才培养的核心是潜移默化地影响和塑造创新思维。

大数据助推财务管理转型与创新——以淮北矿业股份有限公司为例

在新一轮供给侧结构性改革中,煤炭行业首当其冲。煤炭行业产业升级转型一直面临巨大压力,而数字化有助于推进煤炭行业供给侧结构性改革的顺利实现,淮北矿业控股股份有限公司结合自身实践独立创造,建立财务管理大数据平台将财务部门打造成企业全域数据汇集的中心,为企业风险管理、经营预测、战略决策提供服务。该系统实现了业务流、资金流、信息流等数据源的及时共享,并且将公司财务体系与客户、供应商、服务商等全产业链伙伴紧密联系起来,满足了公司合理配置资源的需求。公司不断创新管理会计工具,深刻体现了业财融合和战略的对接,对制造企业等其他企业有很好的示范作用。

Nanocellulose from bamboo shoots as perfect Pickering stabilizer:Effect of the emulsification process on the interfacial and emulsifying properties

In this work,the medium internal phase O/W Pickering emulsions stabilized with bamboo shoots nanocellulose(BSNC)was successfully fabricated.The nanocellulose extracted from bamboo shoots with an average width of 56.37 nm and height of 7.44 nm showed great potential as an emulsifier in the Pickering emulsions.The effects of BSNC content,oil-water ratio and emulsification process on the structure,stability and rheology of the resultant Pickering emulsions was explored.The obtained emulsion with the BSNC content of 0.5 wt%at the oil to water volume ratio of 5:5 had a lower particle size of around 25μm.With the increasing BSNC content,the emulsions presented increased droplet size,and even demulsification occurred.Interestingly,the physicochemical properties of the emulsions could be significantly improved through twice shearing,which effectively reduced droplet size.The surface coverage was above 100%for the Pickering emulsions stabilized with the BSNC content of 0.5%-1.1%.With the increasing BSNC content,the apparent viscosity was increased first and then decreased,and all emulsions showed elastic behaviors.This work would provide theoretical guidance for preparing medium or high internal phase Pickering emulsions stabilized with nanocellulose.