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关键词： 盛泽   时尚   交易额   集中展示  

摘要： 10月15—18日,为期4天的第十三届江苏(盛泽)纺织品博览会暨2024苏州湾时尚周在盛泽举行。新质活力、时尚赋能、数实融合……4天展期,纺博会时尚周联动“秀、展、赛、会、商”五大板块,参展企业超300家,展出面积达2万平方米,集中展示了覆盖各领域的超万款面料。

摘要： Custom mandibular advancement devices (MADs) can be fabricated by using either conventional processes or computer-aided design and computer-aided manufacturing (CAD-CAM). The CAD-CAM technique involves digitizing the dental arches of the patients, designing by using a dental CAD software program, and additive manufacturing with a suitable material. This article describes the steps of the design of a custom MAD by using an open-source nondental CAD software program and of the fabrication with additive manufacturing.

关键词： 养老金融   金融服务   乡村老人   纺织手工艺   纺织品  

摘要： 随着中国老龄化社会的到来,养老金融成为解决乡村老人养老服务及增加创收问题的重要途径。文章阐述了养老金融服务的来源与背景,从资金、经验、市场方面总结了乡村老人纺织手工艺创业的可能性,结合养老金融支持体系,从培训与设计、市场与营销层面梳理了乡村老人纺织手工艺创业的困境,通过灵活运用养老金融、培育新型经营主体、创新特色纺织品等路径,为实施乡村老人纺织手工艺创业项目提供可行性建议。

关键词： Additive manufacturing   X-ray scatter   Projection-based   Mesh   CAD   X-ray CT  

摘要： Additive Manufacturing (AM) has revolutionised the production of custom-shaped samples through direct manufacturing from digital design models. As the internal structural integrity of these printed samples is of critical importance in diverse applications, X-ray radiography and X-ray Computer Tomography (X-CT) have emerged as widely used non-destructive imaging methods for quality control of AM samples. Unfortunately, beam hardening and X-ray scatter often degrade the quality of X-CT images, posing a significant challenge for X-ray based inspection. In addressing X-ray scatter, most of the methodologies assume fixed scanning geometries or stationary/known object characteristics, limiting their practicality in dynamic industrial scenarios where these may change over time. Simulation-based methods have been proposed that estimate and suppress scatter by accurately simulating the forward projection process. Yet, these methods assume the availability of X-CT reconstruction for simulation, thereby requiring a large number of projections (and hence scan time) for faithful X-CT reconstruction. In this work, we propose a simulation-based scatter compensation method (PACS) that eliminates the need for a prior X-CT scan. By employing few projections and nominal surface meshes of the scanned objects, the actual pose of the objects and their superficial deviation (e.g., due to printing) are estimated and used during X-ray simulations. Furthermore, as the pipeline is inherently coupled with a mesh projector, analysis of projective residuals facilitates the inspection for deformities or defects within the scanned object. To demonstrate the versatility of PACS for mitigating scatter, experiments across various inspection scenarios are conducted, and the outcomes are compared with those of a well-established scatter compensation technique. The results consistently show a higher Signal-to-Noise Ratio and Contrast-to-Noise Ratio of pore-defects, as well as lower residual errors in al

关键词： coronary artery disease   endothelium-dependent relaxation   inflammaging   sex-dimorphism   ACh   acetylcholine   BMI   body mass index   CABG   coronary artery bypass graft   CAD   CVD   cardiovascular disease   DEG   differentially expressed genes   EC   endothelial cell   EC50   half maximal effective concentration   Emax   maximum relaxation   FIB   fibroblast   GSVA   gene set variation analysis   IMM   immune cell   ITA   internal thoracic artery   L2FC   log2 fold change   PER   pericyte   PGI2   prostacyclin I2   SASP   senescence-associated secretory phenotype   SMC   smooth muscle cell   snRNA-seq   single nuclei RNA sequencing   UMAP   uniform manifold approximation and projection  

摘要： Coronary artery disease (CAD) is more prevalent in men than in women, with endothelial dysfunction, prodromal to CAD, developing a decade earlier in middle-aged men. We investigated the molecular basis of this dimorphism ex vivo in arterial segments discarded during surgery of CAD patients. The results reveal a lower endothelial relaxant sensitivity in men, and a senescence-associated inflammaging transcriptomic signature in endothelial cells. In women, cellular metabolism and endothelial maintenance pathways are conserved. This suggests that senolytic therapies to reduce risk of cardiovascular events in women with CAD may not be as effective as in men.

关键词： 剑杆织机   剑头   送纬   接纬   夹纱器   夹持面  

摘要： 为满足剑杆织机用剑头对多类型纱线的适应性和夹持稳定性,介绍剑杆织机用剑头的现状和GS900型剑杆织机技术亮点;在GS900型剑杆织机常规剑头的基础上,根据涤纶长丝、扁平纱、圈圈纱3种纱线特点,对夹纱器表面粗糙度、接纬剑头引纬结构、夹纱器夹持力等进行优化,设计制作出适用多类型纬纱引纬的剑杆织机用剑头。指出:该剑头能更好地提高适应性和稳定性,减少织机停台更换、调试剑头的次数和周期,减轻劳动强度,显著提升了剑杆织机的生产效率和产品质量。

摘要： The aim of this study was to evaluate the translucency and color stability of monochrome universal resin composites applied to restorative materials.

关键词： Hydraulic motor   Cam roller bearing   Fatigue life   Geometry optimization   Load distribution  

摘要： Cam-lobe radial-piston hydraulic motors are widely used as rotation driving units for various marine machinery owing to their ultrahigh output torque(more than 100 kN m).A multi-row cam roller bearing(MCRB)is the key component that directly determines the fatigue life of a cam-lobe radial-piston hydraulic ***,compact geometry and complex loads render MCRB susceptible to fatigue failure,highlighting the need for an optimized MCRB to achieve longer fatigue life and higher ***,this study proposes an innovative geometry optimization method for an MCRB to improve its fatigue *** this method,a quasi-static model was developed to calculate the load distribution,with the fatigue life of the MCRB calculated using both basic dynamic loading and load ***,a genetic algorithm was used to obtain the optimized geometry parameters,which significantly improved the fatigue life of the ***,a loading test was conducted on a hydraulic motor installed with both the initial and optimized MCRB to validate the effectiveness of the proposed optimization *** study provides a theoretical guideline for optimizing the design of MCRB,thereby increasing the fatigue life of hydraulic motors.

关键词： 计算机辅助设计/计算机辅助制作   氧化锆全瓷冠   金属烤瓷冠   基质金属蛋白酶  

摘要： 目的 探究计算机辅助设计/计算机辅助制作(CAD/CAM)氧化锆全瓷冠、金属烤瓷冠对牙冠修复的效果。方法 回顾性选取平顶山市第二人民医院2021年9月至2023年9月收治的85例牙冠修复患者的病历资料,根据修复方案分为两组(对照组42例,研究组43例)。对照组使用钴铬合金烤瓷冠,研究组使用CAD/CAM氧化锆全瓷冠。对比两组修复效果、牙周指标[探诊深度(PD)、龈沟出血指数(SBI)、菌斑指数(PLI)]、龈沟液中基质金属蛋白酶(MMPs)[基质金属蛋白酶-2(MMP-2)、MMP-8、MMP-9]水平及患者修复满意度。结果 研究组颜色与邻牙匹配合格率较对照组高(P<0.05);两组外形合格率均为100%,两组边缘着色及完整性合格率相比,差异无统计学意义(P>0.05);与修复前对比,修复2周、6个月后,两组PD、SBI、PLI、MMP-2、MMP-8、MMP-9水平均升高,且研究组低于对照组(P<0.05);修复3个月后,两组PD、SBI、PLI、MMP-2、MMP-8、MMP-9对比,差异无统计学意义(P>0.05);研究组修复满意度优于对照组(P<0.05)。结论 CAD/CAM氧化锆全瓷冠修复牙冠效果较好,对牙周组织刺激较小,患者满意度高。

关键词： Occlusal veneers   Preparation design   Lithium disilicate   CAD-CAM   Fracture resistance  

摘要： Background Occlusal veneer had been evaluated for mechanical properties using lithium disillicate. However, studies evaluating the mechanical properties of occlusal veneer with different preparation designs and ceramic materials are lacking. So, this in vitro study aimed to evaluate the fracture resistance of occlusal veneers with two designs fabricated from two different ceramic materials. Material and methods Fourty mandibular third molars were distributed to 2 groups (n = 20) according to preparation design: group (O) anatomical occlusal reduction and group (OA) anatomical occlusal and 1 mm axial reduction. Each group was additionally subdivided into two subgroups (n = 10) according to ceramic materials;in subgroup X, lithium disilicate (*** CAD, Ivoclar AG, Schaan, Liechtenstein) was used, and in subgroup S, zirconia-reinforced lithium silicate (ZLS) (Vita Suprinity, VitaZahnfabrik, Bad S & auml;ckingen, Germany) was used. All specimens were cemented with a light-cure resin cement (Choice 2, Bisco, Schaumburg, USA). 5000 thermocycles were applied to all specimens with both temperatures of 5 degrees C and 55 degrees C in two water baths;the dwell time was 30s at each bath, and the transfer time was 10s. Then all specimens were subjected to a fatigue simulation under dynamic loading of 200 N for 250,000 cycles. A universal testing machine (5500R/1123, Instron, Norwood, USA) was used to evaluate the fracture strength with a crosshead speed of 1 mm/min. All data were analyzed statistically by using a two-way ANOVA, and for some violations of assumptions, these results were compared with those obtained by the nonparametric test (Scheirer Ray Hare) (alpha = 0.05). Results A statistically significantly higher fracture resistance in the 'OA' (3389 N) compared to the 'O' (2787 N) group regardless of the ceramic material (P < .001) and a statistically significantly higher fracture resistance in the 'X' (3295 N) compared to the 'S' (2881 N) regardless of the preparation