摘要：Bacterial infection is a major problem following bone implant ***,poly-l-lactic acid/carbon nanotube/hydroxyapatite(PLLA/CNT/HAP)bone scaffolds possess enhanced mechanical properties and show good ***,wesynthesizedsilver(Ag)-dopedCNT/HAP(CNT/Ag-HAP)nanohybrids via the partial replacing of calcium ions(Ca2+)in the HAP lattice with silver ions(Ag+)using an ion doping technique under hydrothermal ***fically,the doping process was induced using the special lattice structure of HAP and the abundant surface oxygenic functional groups of CNT,and involved the partial replacement of Ca2+in the HAP lattice by doped Ag+as well as the in situ synthesis of Ag-HAP nanoparticles on CNT in a hydrothermal *** result-ing CNT/Ag-HAP nanohybrids were then introduced into a PLLA matrix via laser-based powder bed fusion(PBF-LB)to fabricate PLLA/CNT/Ag-HAP scaffolds that showed sustained antibacterial *** then found that Ag+,which pos-sesses broad-spectrum antibacterial activity,endowed PLLA/CNT/Ag-HAP scaffolds with this activity,with an antibacterial effectiveness of 92.65%.This antibacterial effect is due to the powerful effect of Ag+against bacterial structure and genetic material,as well as the physical destruction of bacterial structures due to the sharp edge structure of *** addition,the scaffold possessed enhanced mechanical properties,showing tensile and compressive strengths of 8.49 MPa and 19.72 MPa,***,the scaffold also exhibited good bioactivity and cytocompatibility,including the ability to form apatite layers and to promote the adhesion and proliferation of human osteoblast-like cells(MG63 cells).

摘要：In this paper,a hybrid integrated broadband Doherty power amplifier(DPA)based on a multi-chip module(MCM),whose active devices are fabricated using the gallium nitride(GaN)process and whose passive circuits are fabricated using the gallium arsenide(GaAs)integrated passive device(IPD)process,is proposed for 5G massive multiple-input multiple-output(MIMO)*** inverted DPA structure with a low-Q output network is proposed to achieve better bandwidth performance,and a single-driver architecture is adopted for a chip with high gain and small *** proposed DPA has a bandwidth of 4.4-5.0 GHz that can achieve a saturation of more than 45.0 *** gain compression from 37 dBm to saturation power is less than 4 dB,and the average power-added efficiency(PAE)is 36.3%with an 8.5 dB peak-to-average power ratio(PAPR)in 4.5-5.0 *** measured adjacent channel power ratio(ACPR)is better than
50 dBc after digital predistortion(DPD),exhibiting satisfactory linearity.

摘要：中文创意写作的发展与其在中国内地的学科化和本土化的两大进程密不可分。笔者根据数年间查阅档案、分析文本和田野调查搜集的资料,聚焦美国爱荷华大学的创意写作学科,尝试从其发展的脉络和提出的问题中归纳出对内地高校的创意写作学科建设乃至中国文学走向世界的借鉴意义。

摘要：近年来,我国文化旅游创意产业发展迅速,这不仅有利于传统文化的传承与保护,也推动了国民经济的增长。池州杏花村文化历史丰富,以杏花村十二景为研究对象,提取十二景文化元素,分析杏花村旅游文化创意产品的设计策略,进行文化创意产品设计研究,以期为杏花村旅游文化创意产品的设计提供一些理论参考。

摘要：可移动民宿是可移动建筑的衍生产品,其更符合现代人惬意随性、四处为家的旅行态度,并能促使民宿行业健康发展。文章首先梳理了可移动民宿这一概念,继而基于语义差分法,建立语义体系,结合意象尺度图寻求产品特定的语义偏好,分析语义呈现与设计趋势,再后为进一步助推实践活动,以线性回归分析的方式挖掘语义项目对居住意愿的影响情况,明晰设计侧重,并以此输出案例。最终设计案例通过了语义评估,证明了设计策略的可行性。文章为可移动民宿正名,并为其设计发展提供了思路。

摘要：The effect of W element on the microstructure evolution and mechanical properties of Al_(1.25)CoCrFeNi3 eutectic high-entropy alloy and Al_(1.25)CoCrFeNi_(3-x)W_(x)(x=0,0.05,0.1,0.3,and 0.5;atomic ratio)high-entropy alloys(HEAs)were *** show that the Al_(1.25)CoCrFeNi_(3-x)W_(x) HEAs are composed of face-centered cubic and body-centered cubic(BCC)*** W content increases,the microstructure changes from eutectic to *** addition of W lowers the nucleation barrier of the BCC phase,decreases the valence electron concentration of the HEAs,and replaces Al in the BCC phase,thus facilitating the nucleation of the BCC *** results show that the addition of W greatly improves the mechanical properties,and solid-solution,heterogeneous-interface,and second-phase strengthening are the main strengthening *** yield strength,tensile strength,and elongation of the Al_(1.25)CoCrFeNi2.95W0.05 HEA are 601.44 MPa,1132.26 MPa,and 15.94%,respectively,realizing a balance between strength and *** fracture mode of the Al_(1.25)CoCrFeNi_(3-x)W_(x) HEAs is ductile–brittle mixed fracture,and the crack propagates and initiates in the BCC *** eutectic lamellar structure impedes crack propagation and maintains plasticity.

摘要：Shearing dislocation is a common failure type for rock–backfill interfaces because of backfill sedimentation and rock strata movement in backfill mining *** paper designed a test method for rock–backfill shearing *** digital image techno-logy and three-dimensional(3D)laser morphology scanning techniques,a set of 3D models with rough joint surfaces was ***,the mechanical behavior of rock–backfill shearing dislocation was investigated using a direct shear *** effects of interface roughness on the shear–displacement curve and failure characteristics of rock–backfill specimens were *** 3D fractal dimen-sion,profile line joint roughness coefficient(JRC),profile line two-dimensional fractal dimension,and the surface curvature of the frac-tures were *** correlation characterization of surface roughness was then analyzed,and the shear strength could be measured and calculated using *** results showed the following:there were three failure threshold value points in rock–backfill shearing dis-location:30%–50%displacement before the peak,70%–90%displacement before the peak,and 100%displacement before the peak to post-peak,which could be a sign for rock–backfill shearing dislocation *** surface JRC could be used to judge the rock–backfill shearing dislocation failure,including post-peak sliding,uniform variations,and gradient change,corresponding to rock–backfill disloca-tion failure on the field *** research reveals the damage mechanism for rock–backfill complexes based on the free joint surface,fills the gap of existing shearing theoretical systems for isomerism complexes,and provides a theoretical basis for the prevention and control of possible disasters in backfill mining.

摘要：黎族龙被是黎族织锦艺术的珍品,其传统纺染织绣技艺已被列入世界非物质文化遗产。黎族龙被的纹样特征、设计规律、文化融合等极具考究价值。从黎族龙被保护传承的现状入手,深入分析黎族龙被的传承与当代生活相交融的特征,充分挖掘其文化价值,科技赋能构建新的传承和发展标准,集聚各界优势,构建黎族龙被活态传承路径,为黎族龙被知识体系的构建与传承创新提供必要的理论支撑。

摘要：目的为南梁红色文创产品设计提供一种“图像文化”的研究视角,以及“转向”的研究思路,丰富南梁红色文化的理论内涵与实践意义,拓宽艺术设计的研究领域,进而在艺术设计实践中设计一些兼具文化内涵、审美与艺术价值的文创产品。方法运用事实与事理、理论与实践相结合的方法,以艺术设计创新的实践经验为依据,通过对南梁红色文化资源及其文创产品设计现状的分析,结合实例,探讨图像文化视角下南梁红色文创产品设计“转向”的相关问题。结果提出南梁红色文创产品设计的视觉形象之具象与抽象的提炼、视觉心理学的应用、审美性与实用性的契合、红色精神向应用场景拓展等四个“转向”策略。结论有利于南梁精神的图像呈现,能够促进红色文创产品的精准定位与多元发展,有利于中华民族造物设计地位的提升。

摘要：A novel multicomponent high-Cr CoNi-based superalloy with superior comprehensive performance was prepared,and the evaluation of its high-temperature microstructural stability,oxidation resistance,and mechanical properties was conducted mainly using its cast polycrystalline *** results disclosed that the morphology of theγ′phase remained stable,and the coarsening rate was slow during the long-term aging at 900–1000℃.The activation energy forγ′precipitate coarsening of alloy 9CoNi-Cr was(402±51)kJ/mol,which is higher compared with those of CMSX-4 and some other Ni-based and Co-based ***,there was no indica-tion of the formation of topologically close-packed phases during this *** these factors demonstrated the superior microstructural stability of the *** mass gain of alloy 9CoNi-Cr was 0.6 mg/cm^(2) after oxidation at 1000℃ for 100 h,and the oxidation resistance was comparable to advanced Ni-based superalloys CMSX-4,which can be attributed to the formation of a continuous Al_(2)O_(3) protective ***,the compressive yield strength of this cast polycrystalline alloy at high temperatures is clearly higher than that of the conventional Ni-based cast superalloy and the compressive minimum creep rate at 950℃ is comparable to that of the conventional Ni-based cast superalloy,demonstrating the alloy’s good mechanical properties at high *** is partially because high Cr is bene-ficial in improving theγandγ′phase strengths of alloy 9CoNi-Cr.