摘要：二氧化碳(CO_(2))地质封存是当前技术条件下缓解温室效应最直接、最有效的措施之一。黑龙江省林甸地区广泛分布深部咸水层,盖层条件良好,具备CO_(2)地质封存的地质条件,且封存潜力巨大,但因缺乏石油勘探资料,以往尚未进行高精度的适宜性评价。文章以松辽盆地林甸地区为研究对象,紧密结合其地质、经济、环境等实际情况,本着客观、全面、重点、兼容、可行的原则,从封存安全适宜性、封存潜力适宜性、社会经济适宜性3个指标层,分解出11个指标亚层与32个评价指标,划分了5个评价等级,建立了适用于研究区的深部咸水层CO_(2)地质封存适宜性评价体系。在此评价体系基础上,充分利用地热勘探井的数据,基于层次分析法开展研究区各主要二级构造单元乌裕尔凹陷、克山—依龙背斜、黑鱼泡凹陷、齐家—古龙凹陷深部咸水层CO_(2)地质封存适宜性的模糊数学综合评价。结果表明,研究区4个二级构造单元均具备地壳稳定性较好,盖层以多套、厚度大且连续稳定的泥质岩为主,储层为孔隙度大、渗透性好的多套碎屑岩,不易发生地质灾害等条件,均较适宜进行CO_(2)地质封存,其中以黑鱼泡凹陷最佳。此项工作的开展,为该地区实施封存场地选址与封存工程示范提供了科学、直接的依据。

摘要：Loesses are widely distributed all over the world,especially in ***,long-term agricultural irrigation and extreme climate changes have led to frequent geological disasters in the Heifangtai area of Lanzhou,Gansu,*** these,landslides are one of the most frequent types of disasters that are harmful to humans and the environment.A landslide is closely related to the lithology,structure,and groundwater of the site and consists of a combination of structure units divided by discontinuities,such as faults,joints,and fi ***,geological surveys,engineering drilling,and trenching are typically used to identify the stratum lithology,structure,and groundwater in order to visually display underground information within a limited depth ***,these methods have *** particular,geological surveys can only describe geological phenomena on the surface,while the cost of drilling and trenching may be high,along with the ineffi ciency of *** this research,the integrated geophysical exploration method was used to analyze the hidden joints,cracks,and other discontinuities and geophysical features of the *** results were verified by trench exploration,and large amounts of underground information were obtained,especially the spread and distribution of discontinuities in landslide *** information can be effectively used for carrying out and providing meaningful experiences and lessons in future comprehensive geophysical processing and interpretations related to the prediction and evaluation of landslides.

摘要：This paper proposes a novel collision post structure designed to improve the crashworthiness of subway cab *** structure provides two innovative features:1)a simpler connection between the post and the car roof,which gives a more reasonable load transfer path to reduce the stress concentration at the joint;and 2)a stiffness induction design that provides an ideal deformation model to protect the safe space of the cab *** novel collision post structure was evaluated with finite element analysis,and a prototype cab car was mechanically *** results demonstrate that the deformation response was stable and agreed well with the expected ideal *** maximum load was 874.17 kN and the responses remained well above the elastic design load of 334 kN as required by the design *** addition,there was no significant tearing failure during the whole test ***,the novel collision post structure proposed has met the requirements specified in new standard to improve the crashworthiness of subway cab ***,the energy absorption efficiency and light weight design highlights were also summarized and discussed.

摘要：数字试验测试验证(Digital Experiment,Testing,and Validation,D-ETV)是利用“数力”和“智力”更好地了解产品或系统基本属性和性能特征的方法,是实现高质高效研制运维的重要支撑手段。然而,在物理试验测试验证(Physical Experiment,Testing,and Validation,P-ETV)向D-ETV演化的过程中,因缺乏基础共性标准参考,导致不同人员对D-ETV的理解与认识存在差异;因缺乏关键技术标准参考,导致D-ETV实现难;因缺乏通用支撑、安全、行业应用等标准参考,导致D-ETV实施难。针对上述问题,首先从D-ETV有何用、如何用、何处用3个角度对D-ETV标准需求进行分析。在作者团队前期提出的D-ETV通用流程“D”模型及关键技术基础上,进一步建立并完善“析-定-建-测-评-融”D-ETV理论体系。面向航空航天、工程机械、船舶、电子信息、汽车等领域的国家重大需求,与相关研究院所和企业共同尝试探索建立一套D-ETV标准体系,包括基础共性、关键技术、通用支撑、安全和行业应用5类标准。期望相关工作为D-ETV理论研究、标准研制、行业应用提供参考,助力我国试验测试验证向数字化、智能化、服务化方向发展,进而为我国装备高质量发展提供支撑。

摘要：The underlying spin-related mechanism remains unclear,and the rational manipulation of spin states is challenging due to various spin configurations under different coordination ***,it is urgent to study spin-dependent oxygen evolution reaction(OER)performance through a controllable ***,we adopt a topochemical reaction method to synthesize a series of selenides with eg occupancies ranging from 1.67 to *** process begins with monoclinic-CoSeO_(3),featuring a distinct laminar structure and Co-O6 *** topochemical reaction induces significant changes in the crystal field's intensity,leading to spin state *** transitions are driven by topological changes from a Co-O-Se-O-Co to a Co-Se-Co configuration,strengthening the crystalline field and reducing eg orbital *** reconfiguration of spin states shifts the rate-determining step from desorption to adsorption for both OER and the hydrogen evolution reaction(HER),reducing the potential-determined step barrier and enhancing overall catalytic *** a result,the synthesized cobalt selenide exhibits significantly enhanced adsorption *** material demonstrates impressive overpotentials of 35 mV for HER,250 mV for OER,and 270 mV for overall water splitting,indicating superior catalytic activity and ***,a negative relation between eg filling and OER catalytic performance confirms the spin-dependent nature of *** findings provide crucial insights into the role of spin state transitions in catalytic performance.

摘要：翻译生态学是一门新兴的边缘学科,通过运用翻译生态学的基本原理之一,即限定因子定律,并把这一定律运用于分析汽车广告语翻译的各种生态限定因子,而经济效益、创意性能、美感体验、文化适宜就是汽车广告语翻译中的限定因子。文中通过了解这些限定因子之后,从而选择恰当的翻译策略来更好地指导汽车广告语的翻译。

摘要：The channel state information at transmitter （CSIT） acquisition plays a key role in the multi-input multi-output （MIMO） system, especially for the precoding schemes. However it is unrealizable to acquire perfect CSIT in practice. In this article, an effective and practical dynamic CSIT model is introduced to acquire imperfect channel state information. For practicability, the channel temporal and spatial correlations are considered and the channel estimate and its error covariance are obtained by utilizing the outdated channel state information. Based on the dynamic CSIT mode, closed-form solution of robust Tomlinsion-Harashima precoding （THP） is derived by a Lagrangian approach. Numerical simulations are presented to demonstrate the performance.

摘要：随着思想启蒙运动、工具理性以及机械复制时代的到来,笼罩在艺术品上的光晕已黯然消退。黑格尔从西方艺术发展史的角度分析认为,艺术最终将让位于哲学,并首次提出了艺术即将终结的预言;阿瑟.C.丹托在批驳艺术史三种叙述模式的基础上认为,现在历史与艺术正坚定地朝着不同的方向前进,艺术的存在已不再具有任何历史意义,由此他提出了艺术的二次终结论。其实,原生态不仅表现在艺术创造过程中情感与审美情趣的自然抒发,也表现在文化的生存与传承中。由于原生态是艺术产生与发展的基础,原生态诗学客观地存在于文学艺术中,它的存在为艺术的不断发展提供了源源不断的动力。因此,艺术不会终结,原生态诗学是后现代艺术走出低谷期并再创辉煌的基础与保证。

摘要：采用ANSYS通用有限元软件,针对钢与高强混凝土连续组合梁本身结构及受力性能的复杂性,考虑材料非线性,提出了一个对钢与高强混凝土连续组合梁从加载到破坏的全过程非线性分析模式,对钢与高强混凝土连续组合梁连接件设计进行分析.研究连接件的布置方式对连续组合梁的影响,完善钢与高强混凝土连续组合梁中抗剪连接件的设计理论.

摘要：给出了定几何混压式轴对称超声速进气道型面设计及性能计算方法,进行了算例计算。对亚临界状态下脱体激波的计算进行了研究,给出了进气道临界状态性能参数随飞行马赫数和高度的改变而变化的曲线。分析了进-发匹配过程,以及进气道的自调节能力。计算得到了基于进气道性能最优,即进气道工作在临界状态条件下,碳氢燃料冲压发动机的供油规律,为进气道大范围寻优设计打下了基础。