摘要：The direct one-step separation of polymer-grade C_(2)H_(4) from complex light hydrocarbon mixtures has high industrial significance but is very ***,an ethylene-adsorption-weakening strategy is applied for precise regulation of the pore geometry of four tailor-made metal–organic frameworks(MOFs)with pillar-layered structures,dubbed TYUT-10/11/12/*** on its pore geometry design and functional group regulation,TYUT-12 exhibits exceptional selective adsorption selectivity toward C_(3)H_(8),C_(3)H_(6),C_(2)H_(6),C_(2)H_(2),and CO_(2) over C_(2)H_(4);its C_(2)H_(6)/C_(2)H_(4) adsorption selectivity reaches 4.56,surpassing the record value of 4.4 by Fe_(2)(O_(2))(dobdc)(dobdc^(4-)=2,5-dioxido-1,4-benzenedicarboxylate).The weak p–p stacking binding affinity toward C_(2)H_(4) in TYUT-12 is clearly demonstrated through a combination of neutron powder diffraction measurements and theoretical *** experiments demonstrate that C_(2)H_(4) can be directly obtained from binary,ternary,quaternary,and six-component light hydrocarbon mixtures with over 99.95%purity.

摘要：文章从设计思路、营销方法、产品类别、特色主题的视角对美国国家档案馆、英国国家档案馆、澳大利亚国家档案馆、澳大利亚国立影片声音档案馆这四家海外档案机构文创产品开发实践现状进行总结分析,并从产品种类、生产研发、授权模式、跨界合作、推广营销五个方面得出对我国档案文创产品开发的启示。

摘要：数字媒体的崛起已经在全球范围内彻底改变了传媒和娱乐行业。数字艺术作为数字媒体领域的一个重要分支,不仅在创新技术应用方面有着巨大的影响,也为大学生创业者提供了前所未有的机遇。文章深入研究数字媒体创新创业,特别关注数字艺术与商业的交汇,从数字艺术的历史演进到大学生创业机会的探索,再到面临的挑战机遇,研究数字艺术如何融入大学生数字媒体创新创业的途径。

摘要：Electrocatalysis is a process dealing with electrochemical reactions in the interconversion of chemical energy and electrical *** synthesis of catalytically active nanostructures is one of the key challenges that hinder the practical application of many important energy‐related electrocatalytic *** with conventional wet‐chemical,solid‐state and vapor deposition synthesis,electrochemical synthesis is a simple,fast,cost‐effective and precisely controllable method for the preparation of highly efficient catalytic *** this review,we summarize recent progress in the electrochemical synthesis of catalytic materials such as single atoms,spherical and shaped nanoparticles,nanosheets,nanowires,core‐shell nanostructures,layered nanomaterials,dendritic nanostructures,hierarchically porous nanostructures as well as composite *** aspects of electrochemical synthesis and several main electrochemical synthesis methods are ***‐performance correlations between electrochemically synthesized catalysts and their unique electrocatalytic properties are exemplified using selected *** offer the reader with a basic guide to the synthesis of highly efficient catalysts using electrochemical methods,and we propose some research challenges and future opportunities in this field.

摘要：To fully exploit the superiority of tubular structures,in this study,we systematically explore the optimal preparation conditions for Ni/Co_(3)O_(4),including cation species and content,additive species and content,and anion *** results reveal that the formation of an initial cobalt nickel acetate hydroxide prism is the key factor and directly affects the final microtubular ***,P is subsequently doped into the Ni/Co_(3)O_(4)lattice to increase the M^(3+)/M^(2+)molar ratio(M=Co and Ni),promote reaction kinetics,and optimize electronic ***,the oxygen evolution reaction performance of P-doped tubular Ni/Co_(3)O_(4)is significantly higher than that of undoped Ni/Co_(3)O_(4)and the state-of-the-art RuO_(2)electrocatalyst.

摘要：This work focuses on streamline tracing techniques for designing hypersonic inlets, and two deficiencies were ***, constriction ratios of stream-traced inlets are unpredictable and uncontrollable, which may affect the integration with airframes and combustors. Secondly, stream-traced inlets cannot exactly inherit properties from a basic flowfield through which they are traced. Then flow mechanisms underneath these phenomena were clarified. It was made clearly that properties of flow tubes captured by an inlet are what essentially determines constriction ratios as well as performances of inlets. Based on flow mechanisms, the method of calculating along streamlines(MCS) was proposed, which makes it possible to evaluate inlet performances directly. At last, optimization design methodologies were introduced to make inlet constriction ratios controllable,and simultaneously improve inlet performances as much as possible.

摘要：1我国自然保护地的发展、挑战与转型自20世纪80年代以来,我国的自然生态保护取得了长足进步。自然保护区是我国生态保护的核心区域,其发展和演化在一定程度上体现了我国生态保护的进程和特点。尽管我国的第一个自然保护区（广东鼎湖山）始建于1956年,但真正意义上的自然生态保护还是在改革开放以后,并随着环境保护工作的开展日益得到重视,

摘要：进入数智时代,伴随着各种新兴技术的全面发展和运用,新媒体传播所具有的传播活动流程再造、移动优先和多渠道分发等技术优势,使中国戏剧文化直接面临着传播内容被泛化、传播时空分离、传播主体运用新媒体能力匮乏的现实挑战。为了抓住现实挑战所带来的发展机遇,实现中国戏剧文化对新媒体传播的适然性,需要实施以人才队伍建设、增强传播力量为立足点,以流程再造、移动优先、多渠道分发的新媒体技术优势为着力点,以深入融合中国戏剧文化与数字媒体技术、充分发挥新媒体移动优先和移动视频效用功能、积极培育中国戏剧文化IP品牌、持续构建中国戏剧文化新媒体传播矩阵为发力点的中国戏剧文化新媒体传播的实践策略。

摘要：全面推行绿色建筑是提升建筑宜居水平、实现建筑碳减排目标的最佳途径。本文基于国家自然科学基金委员会第326期双清论坛“建筑碳中和的关键前沿基础科学问题”的学术探讨,围绕“低碳建筑设计标准体系与方法”的论坛主题,梳理了我国绿色建筑设计标准体系发展过程面临的问题,提出了促进绿色建筑全面发展的建议:加强绿色建筑设计基础科学问题研究,全面提升我国绿色建筑设计标准体系,修订建筑学专业教材体系,解决我国绿色建筑推行过程中效果不理想的根源性问题。

摘要：自2013年提出建立国家公园体制,我国国家公园体制改革已取得了重要进展,成为整个生态文明体制改革任务中进展最快、成果最显著的综合性改革。过去5年,通过国家公园体制改革试点,初步完成了国家公园的顶层设计、明确了管理体制、启动了相关立法程序,筑就了国家公园建设的基本框架。改革的主要经验可以总结为四个方面:一是高层引领与改革创新,二是试点先行和动态调整,三是问题导向和顶层设计,四是利益相关方参与和改善治理体系。然而,未来国家公园体制建设仍然任重道远,面临众多挑战和困难,包括国家公园建设区通常人口众多、土地权属复杂、利益相关者众多、缺乏多方参与机制、地方管理能力薄弱等。今后,应在总结国家公园体制改革经验的基础上,坚持正确的改革取向,进一步扩大开放和创新思维,坚持法治优先、系统推进、分类指导、分阶段实施的基本原则,采取顶层设计加试点先行的方式,实现依法办园、科学办园、民主办园、开放办园;加快推动国家公园和自然保护地立法,建立国家公园现代化治理体系,探索建立国家公园生态产品价值实现机制;最终使以国家公园为主体的自然保护地体系得到整体保护,人民利益得以最大化,真正实现人与自然和谐发展。