课程文献中心 更多>>

关键词： 可穿戴纺织品   专利布局   高价值专利  

摘要： 得益于功能上的不断创新,智能可穿戴纺织品市场的需求持续扩大,全球智能纺织品市场预计到2028年将达到1447.25亿元。为从专利视角全面深入地了解智能可穿戴纺织品行业的发展趋势、竞争态势、面临的机遇和挑战等,本刊记者对北京三聚阳光知识产权服务集团有限公司总裁张建纲进行了专访,为行业的进一步发展提供有价值的参考和建议。

关键词： CHIP   Clonal hematopoiesis of indeterminate potential   Atherosclerosis   Cardiovascular complications   AF   atrial fibrillation   APOE   apoliprotein E   ASXL1   additional sex combs like 1   CAD   coronary artery disease   CANTOS   canakinumab anti-inflammatory thrombosis outcomes study   CHIP   clonal hematopoiesis of indeterminate potential   CMD   coronary microvascular dysfunction   CRISPR   clustered regularly interspaced short palindromic repeats   CVD   cardiovascular disease   DCM   dilated cardiomyopathy   DNMT3A   DNA methyltransferase 3 A   HF   heart failure   HFpEF   heart failure with preserved ejection fraction   HFrEF   heart failure with reduced ejection fraction   IFNy   interferon gamma   IL – 1B   interleukin 1beta   Il – 6   interleukin 6   IL-13   interleukin 13   JAK2   janus kinase 2   MACE   major adverse cardiovascular events   MI   myocardial infarction   NLRP3   nucleotide-binding domain, leucine-rich–containing family, pyrin domain–containing-3   PAD   peripheral artery disease   TET2   ten-eleven translocation 2   VAF   variable allele frequency  

摘要： Clonal hematopoiesis of indeterminate potential (CHIP) is a well-studied phenomenon in hematologic malignancies. With advancements in gene sampling and analysis and the use of large cohort studies, CHIP has recently been linked to cardiovascular disease (CVD). The relationship between CHIP and CVD appears to be bidirectional, with traditional risk factors for cardiovascular disease increasing the mutation burden in CHIP, and CHIP itself effecting the incidence or prognosis of a variety of CVD. The purpose of this review is to understand the epidemiology, risk factors, and pathogenesis of CHIP in the context of various CVD conditions.

关键词： CAD   造纸机械   精密放样测量   安装工艺  

摘要： 随着造纸机械技术的发展,对造纸机械的精密放样测量和安装工艺提出了越来越高的要求。传统的放样测量和安装工艺依靠人工操作,容易出现误差和效率低下等问题。而计算机辅助设计(CAD)技术作为一种先进的工程技术,具有强大的三维建模、仿真分析、数据管理等功能,为解决造纸机械精密放样测量和安装工艺问题提供了有效的途径。将重点研究基于CAD的造纸机械精密放样测量及安装工艺,探讨CAD技术在造纸机械设计、制造、安装等环节中的应用,希望提高造纸机械的制造精度和安装质量。

关键词： Air-sea flux algorithms   CAM6   DISO   Online and offline test   Segmented algorithm  

摘要： The accuracy of air-sea flux algorithms significantly impacts the simulation performance of climate models. In this study, we evaluated nine widely-used air-sea flux algorithms: those used in the BCC model, the CAM model, the ECMWF model, and the WRF model (with three options), as well as three other commonly-used algorithms: COARE, UA, and VM. An offline comparison revealed significant discrepancies in the flux calculations obtained with different algorithms. Subsequently, we conducted nine sensitivity experiments by coupling these algorithms into the Community Atmosphere Model version 6 (CAM6) to assess the extent and manner in which the selection of flux algorithms influenced the simulated climate. The online simulations introduced complexities due to interactions between the atmosphere and surface fluxes, making the results more intricate. The iterative process of the model created negative feedback between wind speed and momentum flux, as well as between air temperature and heat flux, leading to inconsistencies between online and offline test results. Based on the comprehensive evaluation metric Distance between Indices of Simulation and Observation (DISO), a concept of combined or segmented algorithm was introduced, and a segmented algorithm based on wind speed was found resulting in an overall superior simulation performance compared to the previous nine experiments. © 2023

关键词： 色牢度检测   光谱相似性   模型构建  

摘要： 色牢度检测对纺织品质量至关重要,而光谱相似性模型能提供更加精确和客观的评估方法。基于此,本文构建光谱相似性模型用于检测纺织品色牢度并进行对比实验。实验结果表明,模型在多种条件下表现出高准确性,预测的色牢度等级与实际测量的灰度等级具有较高的一致性,准确率能达到85%以上。未来可进一步优化以提升实际应用效果。

关键词： artificial intelligence   decision-support   echocardiography   aortic stenosis   AI   AI-DSA   artificial intelligence decision support algorithm   AS   AUC   area under the receiver operating characteristic curve   AV   aortic valve   AVA   aortic valve area   AVR   aortic valve replacement   BIDMC   Beth Israel Deaconess Medical Center   CAD   coronary artery disease   d   dimension   LVEF   left ventricular ejection fraction   LVOT   left ventricular outflow tract   HR   hazard ratio   PRIME   Proposed Requirements for Cardiovascular Imaging-Related Machine Learning Evaluation   RECORD   REporting of studies Conducted using Observational Routinely-collected health Data   TTE   transthoracic echocardiography  

摘要： Identifying individuals with severe aortic stenosis (AS) at high risk of mortality remains challenging using current clinical imaging methods.

关键词： 运动机构   变量赋值法   风洞试验   电子凸轮  

摘要： 在风洞试验装置的设计和运行中,多轴同步类运动机构的控制质量直接影响着模型的运动范围、气动特性的准确性。以4 m×3 m风洞大迎角尾撑机构为例,为保证该设备的控制准确度,运动轴之间的耦合关系由“一主一从”发展为“一主多从”和“多主一从”,而传统电子凸轮存在耦合关系单一的问题。针对上述问题,提出一种基于电子凸轮的Cam变量赋值法,将基于多项式计算的轨迹生成方式和动态生成关键点型电子凸轮表相结合,使系统不再局限于单一变量引导的控制模式,极大地减少了电子凸轮之间的切换次数,降低了设备的计算负荷和运行时间,适用于需要执行多轴联动的运动机构。

关键词： ABAQUS   应力罗德角   修正剑桥模型   参数敏感性   海堤沉降  

摘要： 基于有限元软件ABAUQS提供的UMAT用户材料子程序接口,考虑应力罗德角对黏土力学特性的影响,改进了修正剑桥模型中的临界状态线。采用相关联流动法则,通过引入剪胀比推导了弹塑性矩阵,从而开发了考虑应力罗德角影响的修正剑桥模型UMAT子程序。运用该子程序模拟了正常固结土的静三轴和真三轴试验,并分析了应力罗德角改变引起的海堤最终沉降量的变化。模拟结果表明,考虑应力罗德角的修正剑桥模型能够较好模拟土体的应力-应变特性;应力罗德角变化对海堤最终沉降量的影响随地基深度增加而降低,对海堤-地基交界处的最终沉降量影响最为显著。

关键词： Post and core technique   Endodontically treated teeth   Dental materials   Computer-aided design   Polyetherketoneketone (PEKK)   Elastic modulus  

摘要： This study investigated the fracture resistance and failure modes of custom-fabricated post- and core dental restorations using various CAD/CAM materials.

关键词： 纺织品   保湿性能   湿阻   相对湿度   蒸发热板法  

摘要： 介绍了纺织品保湿性能的测试方法——蒸发热板法。该方法模拟微气候,测试湿阻和相对湿度。以评价纺织品的保湿性能。结果表明,化纤织物的湿阻和相对湿度与天然纤维织物差异不大,但是涂层织物的湿阻和相对湿度明显比一般织物偏大,市场上的保湿功能纺织品的相对湿度没有明显提升。在实验过程中,温湿度传感器的方向对相对湿度结果的影响较大,朝向亲水透气薄膜,相对湿度明显升高。此外,不同厂家的亲水透气薄膜性能差异较大,应统一亲水透气膜的水分率范围,以确保检测结果的准确性和一致性。