摘要：The development of effective antifreeze peptides to control ice growth has attracted a significant amount of attention yet still remains a great ***,we propose a novel design method based on in-depth investigation of repetitive motifs in various ice-binding proteins(IBPs)with evolution *** this way,several peptides with notable antifreeze activity were *** particular,a designed antifreeze peptide named AVD exhibits ideal ice recrystallization inhibition(IRI),solubility,and biocompatibility,making it suitable for use as a cryoprotective agent(CPA).A mutation analysis and molecular dynamics(MD)simulations indicated that the Thr6 and Asn8 residues of the AVD peptide are fundamental to its ice-binding capacity,while the Ser18 residue can synergistically enhance their interaction with ice,revealing the antifreeze mechanism of ***,to evaluate the cryoprotection potential of AVD,the peptide was successfully employed for the cryopreservation of various cells,which demonstrated significant post-freezing cell *** work opens up a new avenue for designing antifreeze materials and provides peptide-based functional modules for synthetic biology.

摘要：How to increase strength without sacrificing ductility has been developed as a key goal in the manufacture of high-performance metals or alloys. Herein, the double-nanophase intragranular yttrium oxide dispersion strengthened iron alloy with high strength and appreciable ductility was fabricated by solution combustion route and subsequent spark plasma sintering, and the influences of yttrium oxide content and sintering temperature on microstructures and mechanical properties were investigated. The results show at the same sintering temperature,with the increase of yttrium oxide content, the relative density of the sintered alloy decreases and the strength increases. For Fe–2wt%Y_(2)O_(3)alloy, as the sintering temperature increases gradually, the compressive strength decreases, while the strain-to-failure increases. The Fe–2wt%Y_(2)O_(3)alloy with 15.5 nm Y_(2)O_(3)particles uniformly distributed into the 147.5 nm iron grain interior sintered at 650℃ presents a high ultimate compressive strength of 1.86 GPa and large strain-to-failure of 29%. The grain boundary strengthening and intragranular second-phase particle dispersion strengthening are the main dominant mechanisms to enhance the mechanical properties of the alloy.

摘要：第六届西湖纪录片大会从主题设置和影片遴选上挖掘共时性体验下纪录片的公共性,同时在文化与物理空间上构造公共性空间并加强电影与人的情感联系;杭州作为历史文化名城与旅游消费城市的城市气质,以及多项重要国际国内节展活动的举办经验与电影节文化气质相融合,同时也在人与自然的亲密交互中赋予电影节以独特的灵性;如今的西湖国际纪录片大会已经作为一个整体规划带动了杭州地区的全年影展,并被纳入杭州城市发展目标规划当中,实现了影展品牌与城市文化的双向赋能。文章通过公共空间的构造与情感联系的加强、城市气质与城市经验与电影节展的融合、影展品牌与城市文化双向赋能的经验三个维度进行深入阐述。

摘要：随着经济的发展和社会的进步,环境保护、资源节约备受消费者的关注,在需求导向下,绿色环保成为企业的发展方向。对饲料企业而言,要想推广品牌价值,并以良好的品牌形象带动饲料企业的可持续发展,需要从环保角度优化包装设计,减少废弃饲料包装对环境造成的污染问题。为此,本文从饲料包装的环保要求出发,分析了品牌价值视角下推广饲料环保包装的意义,针对饲料环保包装的优化设计提出参考意见,以期满足消费者的环保需求,在实现饲料产品促销的同时提高饲料企业的品牌价值。

摘要：In order to evaluate interstitial strengthening effect on the properties of high entropy alloy(HEA),a nitrogen-doped Cr Mn Fe VTi6 HEA was fabricated by mechanical alloying(MA)and spark plasma sintering(SPS).XRD,SEM,TEM and FIB were used to characterize the phase composition and microstructure of this *** sintered bulk HEA exhibits a microstructure comprising TiNx,BCC,Laves and B2 *** HEA exhibits high yield strength(>2729 MPa)and hardness in lower temperature range of<380℃.Quantitative calculations of the contributions from each strengthening mechanism in the BCC phase indicate that the interstitial strengthening by nitrogen is the dominant *** additions in the BCC phase can produce a yield strength increase of-634 MPa/at.%,which is much higher than the strengthening effects of carbon or boron additions in other *** demonstrates that adding nitrogen is a viable approach for enhancing the strength of HEAs.

摘要：混合教学模式是一种新型的教学模式。结合高职艺术设计专业的特点,通过对现有混合教学模式的深入研究,提出一种创新的混合教学模式及实践路径,旨在提高高职艺术设计专业教学质量和学生学习效果。

摘要：Both reverse osmosis(RO) and nanofiltration(NF) membranes have been increasingly used for water purification and desalination. However, the salt rejection of NF membranes is quite different from that of RO membranes,which makes a significant distinction in their process designs. This work started from the performance investigation of a single NF membrane element and then focused on the process design of the NF system for surface water treatment. In experimental tests, it was found that the observed rejection of the NF element becomes nearly constant when the concentrate flow is large enough, while the membrane flux of the NF element is quite stable regardless of the water flow across the membrane surface. These findings can be used to instruct the process design of the NF system for surface water treatment. In process design, a two-stage arrangement is sufficient for the NF system to reach the highest water recovery, while the RO system requires a three-stage arrangement.

摘要：形式，作为艺术表现的主要手段，亦是构成舞蹈语言特殊性的重要表现。一般而言，中国民族民间舞常常以既成风格系统的舞蹈语言作为形式表现的出发点，既成风格系统的舞蹈语言作为抒情性舞蹈语言表现的主要手段，通过素材提取、风格提纯，较为客观地再现民族审美特征。文章以中国民族民间舞作为研究对象，分析当下舞台形式中语言形式的生成如何突破传统的“模拟再现”,走向元素重构基础上的“抽象表现”,中国民族民间舞舞台形式语言审美旨趣也从传统的“模拟再现”走向现代的“抽象表现”之审美建构。在这一转换过程中，作品创作基于编导的自主性与艺术创作的自由性，以“内在精神”作为创作导向和驱动力，以抽象性的舞蹈形式语言作为“内在精神”表达的实体。

摘要：The realization of tunable nonlinear optical(NLO)responses in a single nano-/micro-structure is extremely ***,in lack of effective ways to integrate multiple performances,it still faces severe limitations during ***,we demonstrate a wavelength-dependent NLO micro-structure based on host-guest metal-organic framework(MOF)materials through encapsulating linear dye molecules into periodic one-dimensional(1D)*** confinement to non-centrosymmetric polar dye molecules enhances the second-/third-order NLO responses of the hybrid crystals,causing obvious two-photon luminescence(TPL),second harmonic generation(SHG)and third harmonic generation(THG)responses in the as-prepared *** highly ordered structures of MOFs impart spatial regulation on the linear dye molecules to realize orientation alignment,resulting in the polarized anisotropy ***-to-NIR(NIR,near-infrared region)two-photon pumped lasing is realized with the natural whispering gallery mode resonance cavities of MOFs under the excitation of a 1200-nm fs ***,tunable NLO properties such as TPL,SHG and THG are achieved through switching the incident excitation wavelength from 800 to 1500 *** hybrid materials with tunable NLO responses may open a new avenue toward designing multifunctional NLO devices in the future.

摘要：湿式离合器是车辆传动系统核心元件,在高速分离状态下易出现摩擦片和钢片之间的碰撞摩擦,由此引起离合器带排转矩的急剧增大,影响其传动效率和可靠性。因此,本文以降低离合器高速段碰摩带排转矩为目标,对摩擦片表面微织构进行了优化设计。首先提出了摩擦片表面任意微织构形线参数化建模方法;然后选取了微织构的数量、深度、周向占比、径向占比和形线参数,构建了微织构优化的设计变量、约束条件和优化目标函数,通过将试验设计、模拟近似模型和搜索寻优相结合,建立了摩擦片表面微织构优化设计模型;最后进行了微织构优化前后的带排转矩对比试验。结果表明优化后的微织构可显著降低高速段碰摩带排转矩,并大幅推迟摩擦副高速碰摩现象出现的线速度。