课程文献中心 更多>>

关键词： Lithium-disilicate   Fast crystallization   Ceramic glazing   Mechanical properties   Spectroscopy  

摘要： Highlights•Abbreviated crystallization negatively impacted lithium disilicate CAD/CAM ceramic properties. •Simultaneous glazing/crystallization led to weaker mechanics and crystallization defects. •Simultaneous glazing with abbreviated crystallization resulted in the poorest results. •Glaze layer weakened spectroscopic signals and possibly hindered thermal distribution. •Both processes caused microstructural features, suggesting incomplete crystallization.

关键词： 纺织品   分解   致癌芳香胺染料   检测要点  

摘要： 可分解致癌芳香胺染料是纺织品中常见具广泛应用的一种染料,一旦发生分解,其产物易对人体健康造成伤害,因此纺织品行业需准确检测纺织品中存在染料,对维护消费者健康非常关键。以往采用检测技术以常规质谱法、色谱法、光谱法等,但检测结果多数存在局限。基于此,综合概述可分解致癌芳香胺染料的原理及危害性,进而分析针对可分解致癌芳香胺染料的检测要点,旨为纺织品的安全生产提供有效数据依据。

关键词： 涤/棉   针织物   漂染   一浴两步  

摘要： 高效漂染一浴两步工艺代替常规漂染工艺处理涤/棉混纺针织物,具有良好的棉精练及涤染色效果。工艺条件为:TF-213HL 0.5%(omf),分散染料0.5%(omf),浴比1∶10,130℃处理30 min,不排液降温至85℃处理30 min,并加入TF-1291K 1.0%(omf),NaOH 0.6%(omf),H_(2)O_(2)8.0%(omf)。

关键词： Health status   Atrial fibrillation   Rate control   Rhythm control   Catheter ablation   AAD   antiarrhythmic drug   AF   atrial fibrillation   AFEQT   Atrial Fibrillation Effect on QualiTy-of-life   AFEQT-OS score   AFEQT Overall Summary score   CA   catheter ablation   CAD   coronary artery disease   CKD   chronic kidney disease   HF   heart failure   KiCS-AF   Keio Interhospital Studies–Atrial Fibrillation  

摘要： Various treatment approaches for atrial fibrillation (AF) have demonstrated improved health status, yet the significance of these therapeutic interventions in individual patients remains unclear.

关键词： 含氯苯酚   纺织品   ZDHC  

摘要： 近年来,越来越多品牌都在探讨纺织品的可持续发展,使用绿色环保的化学品是可持续发展中的重要一环。含氯苯酚作为受限化学品,是推广纺织品可持续发展的重要阻碍。很多法规标准对含氯苯酚有严格要求。从实际生产的角度来探讨如何控制纺织品中含氯苯酚的含量。

关键词： 课程思政   机械制图与CAD   教学设计  

摘要： 本文通过对“教育部关于印发《高等学校课程思政建设指导纲要》的通知”的解读,在讲授《机械制图与CAD》课程时,根据该门课程的各知识点适时地加入思政元素,对学生进行“润物细无声”般的课程思政教育,以培养工科学生的大国工匠精神,以及职业道德素质,增强其家国情怀和责任使命感。通过思政案例和思政实施策略,取得良好的课程思政效果。

摘要： OBJECTIVESCAD/CAM stands for computer-aided design/computer-aided manufacturing. It is a digital system that employs CAM to translate designs from CAD into tangible goods. CAD/CAM intraoral scanners aim to make practitioners more effective in dentistry. METHODSThe criteria selection is based on a study conducted with research articles. These articles were included and/or excluded based on the following criteria: articles should be peer reviewed, not published before 2018 and not literature reviews or meta-analysis. The database used to conduct this literature review was PubMed through Augusta University's online library database. The keywords used to find relevant articles were CAD/CAM, computer-aided design, computer-aided manufacturing, computer-assisted manufacturing, accuracy, intraoral scanner, high resolution, anxiety, stress, fear, nervousness, dental phobia, time distribution, time administration, effective planning, and time management. RESULTSTo demonstrate that CAD/CAM improves clinician accuracy and efficacy, three separate studies were carried out. In the first study, an intraoral scanner is used to examine the accuracy of digital impressions at the edge of crown preparation using different scanning methodologies. A mandibular first molar was created entirely of ceramic on a typodont. Three settings—high solution, ordinary resolution, and combination resolution—were used to get the desired impression. Study two was carried out. Five skilled doctors and five less skilled clinicians were randomly allocated to build interim single crowns using digital sextant imaging. Research 3 found that using CAD/CAM would improve implant placement when comparing free-hand surgery to using the s-CAIS surgical guide for insertion. CONCLUSIONSAny intraoral scanner's accuracy is entirely dependent on the machine's hardware and is tuned for default scans. Compared to a traditional workflow, a single crown made with CAD/CAM needed less fabrication time and produced a better

关键词： coronary artery bypass grafting   percutaneous coronary intervention   sex disparities   cardiac surgery outcomes in women   AHR   adjusted hazard ratio   CABG   coronary artery bypass graft   CAD   coronary artery disease   CI   confidence interval   CSRS   Cardiac Surgery Reporting System   EES   everolimus-eluting stents   LAD   left anterior descending artery   MACE   major adverse cardiac events   MI   myocardial infarction   PCI   percutaneous coronary intervention   PCIRS   Percutaneous Coronary Interventions Reporting System  

摘要： To compare outcomes in women undergoing percutaneous coronary intervention (PCI) and coronary artery bypass graft (CABG) surgery.

关键词： 孟德尔随机化   循环炎症因子   辐射相关皮肤和皮下组织疾病   全基因组关联分析  

摘要： 目的探讨循环炎症因子水平与辐射相关皮肤和皮下组织疾病(RRDST)之间的因果关系。方法基于全基因组关联研究数据,采用5种孟德尔随机化(MR)方法分析血清中70种循环炎症因子水平与RRDST的关系。结果正向MR结果显示,嗜酸性粒细胞趋化因子(CCL11)(比值比=0.9418,95%可信区间0.8910~0.9955,P=0.0341)、趋化因子(CXCL)10(比值比=0.9295,95%可信区间0.8819~0.9797,P=0.0065)、骨保护素(OPG)(比值比=0.8683,95%可信区间0.7749~0.9730,P=0.0150)与RRDST之间存在显著负相关,CXCL6(比值比=1.1082,95%可信区间1.0361~1.1853,P=0.0028)、白细胞介素(IL)-15受体α(比值比=1.0800,95%可信区间1.0228~1.1404,P=0.0055)、白血病抑制因子受体(LIFR)(比值比=1.0734,95%可信区间1.0146~1.1357,P=0.0138)、单核细胞趋化蛋白(MCP-1)(比值比=1.0928,95%可信区间1.0350~1.1538,P=0.0014)、硫酸氨基转移酶(SULT)1A1(比值比=1.0665,95%可信区间1.0054~1.1313,P=0.0324)与RRDST之间存在显著正相关;敏感性分析证实了这些因果关系的稳健性;反向MR分析未发现RRDST与循环炎症因子水平存在显著的反向因果关系。结论正向和反向MR分析揭示了特定炎症因子水平与RRDST风险之间的显著因果关系,CCL11、CXCL10、OPG水平与RRDST风险显著负相关,而CXCL6、IL-15受体α、LIFR、MCP-1、SULT1A1水平与RRDST风险显著正相关。这些发现为理解RRDST的病理机制提供了新的见解,并为未来的临床和公共卫生干预措施提供了潜在的目标。

关键词： 机织物   过滤   数值模拟   动态形变   孔径分布  

摘要： 为优化过滤机织物的设计,进一步探究机织滤料在受压时的动态形变及孔径变化规律,依据在实际应用时过滤机织物的纱线线密度、经纬密、面密度等参数,借助建模软件Solidworks建立织物三维细观模型,利用有限元软件ANSYS Workbench对不同压力条件下织物的形变情况进行模拟,分析织物最大变形量、变形轮廓以及孔径变化趋势,并将模拟结果与实验结果进行比较。结果表明:织物最大变形量在圆心处,变形量沿直径呈梯度递减;随着压力升高,织物中心的变形量呈非线性增加,织物的变形轮廓曲线类似于正弦曲线;在压力作用下织物孔径增大,且中心区域孔径大于远离圆心处孔径,同一周向孔径大小和形状也会发生改变。模拟结果与实验结果具有较好的一致性。