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关键词： 数字化技术   纺织品图案   创新设计   图案设计   数码印花  

摘要： 文章旨在探讨数码印花技术在纺织品图案创新设计中的应用。通过文献综述与案例分析,文章分析了数码印花技术在个性化定制、复杂多层次图案实现、快速响应市场需求以及环保图案设计与低能耗生产等领域的具体应用策略,为设计师提供实践指导,旨在提升纺织品图案设计的水平,为行业可持续发展提供新动力。

关键词： 桔梗皂苷D   高效液相色谱-电喷雾散射检测器(HPLC-CAD)   含量测定   仪器分析试验  

摘要： 建立测定桔梗原料中桔梗皂苷D含量的高效液相色谱-电雾式检测器(HPLC-CAD)仪器分析试验设计。基于Thermo Scientific^(TM)Corona^(TM)Veo^(TM)RS CAD检测器,以中药原料桔梗为例,建立桔梗皂苷D的高效液相色谱法,并对方法的可行性、可靠性和适用性进行分析。结果表明,桔梗皂苷D在0.5~50μg/mL之间进样量浓度与峰面积对数呈良好线性关系A=0.0397C+0.0654(R^(2)=0.9926),样品稀释液浓度为1.70μg/mL,平均加样回收率为112.8%(SRSD=1.9%)。试验设计可靠、准确,具有良好的重复性,为桔梗原料的质量标准提升奠定基础,并能激发学生的科研兴趣,提高学生的科研素养和创新能力。

关键词： 纺织品   文物保护   霉菌   预防与控制  

摘要： 霉菌作为自然界中广泛分布的微生物,其生态功能与应用潜力丰富多样。本文旨在通过简要探讨霉菌的分类体系、生物学特性及繁殖机制,揭示其在适宜环境条件下会迅速繁殖的特性,进而明确其对文物保存状态构成的潜在威胁及造成的负面影响,进一步剖析具体文物案例中霉菌的生长状况及影响,并据此探讨霉菌控制技术的实施策略及其实际效果。这一研究不仅在一定程度上丰富文物保护领域的理论内涵,更为实践中的霉菌防治工作提供可借鉴的理论指导与操作参考依据。相关研究成果旨在为我国文物保护事业提供一份技术支撑,从而推动该领域在霉菌防治方面取得更加显著的成效。

关键词： SCN1B (β1/β1B)   Voltage-gated sodium channel   Arrhythmia   Brugada syndrome   Ephaptic coupling   Perinexus   CAM   cell adhesion molecule   GJ   gap junction   ICD   intracellular domain   Ig   immunoglobulin   RIP   regulated intramembrane-proteolysis   VGSC   voltage-gated sodium channel  

摘要： Voltage-gated sodium channels (VGSCs) are transmembrane protein complexes that are vital to the generation and propagation of action potentials in nerve and muscle fibers. The canonical VGSC is generally conceived as a heterotrimeric complex formed by 2 classes of membrane-spanning subunit: an α-subunit (pore forming) and 2 β-subunits (non–pore forming). Na_V1.5 is the main sodium channel α-subunit of mammalian ventricle, with lower amounts of other α-subunits, including Na_V1.6, being present. There are 4 β-subunits (β1–β4) encoded by 4 genes (SCN1B–SCN4B), each of which is expressed in cardiac tissues. Recent studies suggest that in addition to assignments in channel gating and trafficking, products of Scn1b may have novel roles in conduction of action potential in the heart and intracellular signaling. This includes evidence that the β-subunit extracellular amino-terminal domain facilitates adhesive interactions in intercalated discs and that its carboxyl-terminal region is a substrate for a regulated intramembrane proteolysis (RIP) signaling pathway, with a carboxyl-terminal peptide generated by β1 RIP trafficked to the nucleus and altering transcription of various genes, including Na_V1.5. In addition to β1, the Scn1b gene encodes for an alternative splice variant, β1B, which contains an identical extracellular adhesion domain to β1 but has a unique carboxyl-terminus. Although β1B is generally understood to be a secreted variant, evidence indicates that when co-expressed with Na_V1.5, it is maintained at the cell membrane, suggesting potential unique roles for this understudied protein. In this review, we focus on what is known of the 2 β-subunit variants encoded by Scn1b in heart, with particular focus on recent findings and the questions raised by this new information. We also explore data that indicate β1 and β1B may be attractive targets for novel antiarrhythmic therapeutics.

摘要： To compare pre- and postoperative findings between patients undergoing hip arthroscopy for femoroacetabular impingement syndrome with lateral impingement versus those without lateral impingement

关键词： 新发心房颤动   非体外循环冠状动脉移植术   内脏脂肪组织指数   预测价值  

摘要： 目的:探究术前基于CT的内脏脂肪组织指数(visceral adiposity tissue index,VATI)对冠心病患者行非体外循环冠状动脉移植(off-pump coronary artery bypass graft,OPCABG)术后新发心房颤动的影响。方法:回顾性纳入2018年6月至2023年7月,因冠心病行OPCABG的患者,收集患者的一般临床资料和相关影像学资料并计算VATI。通过Cox比例风险模型和受试者工作特征(ROC)曲线探索VATI的预测新发心房颤动的价值。结果:本研究共纳入542例患者,男395例,女147例,平均年龄(62.1±3.4)岁,术后共有146例出现新发心房颤动,发生率为26.9%。VATI的三分位数截断值为39.72和49.84,依据三分位数分为三组(VATI 1,VATI 2,VATI 3),Cox比例风险模型量化VATI三分位与新发心房颤动之间的关联,以最低三分位作为参照组。模型1,未校正:VATI 2(HR=2.34,95%CI:1.14~2.79), VATI 3(HR=4.22,95%CI:2.73~6.0);模型2,校正年龄和性别:VATI 2(HR=1.35,95%CI:1.01~1.80),VATI 3(HR=3.15,95%CI:1.23~4.19);模型3、模型2+校正BMI、CRP、糖尿病、急诊手术、纽约心功能分级Ⅲ-Ⅳ级及左心房内径:VATI 2(HR=1.31,95%CI:0.92~-1.76), VATI 3(HR=2.56,95%CI:1.11~3.43)。ROC曲线分析结果显示,VATI预测OPCABG术后新发心房颤动(AUC=0.84695%CI:0.795~0.869,P <0.001)。结论:基于CT的VATI是预测OPCABG术后新发心房颤动的有效指标。

关键词： adult congenital heart disease   valve repair   valve replacement   reoperation   tetralogy of Fallot   ACHD   adult congenital heart disease   CAD   coronary artery disease   CHD   congenital heart disease   CPB   cardiopulmonary bypass   HR   hazard ratio   TV   tricuspid valve   TVr   tricuspid valve repair   PVR   pulmonary valve replacement  

摘要： As patients with congenital heart disease increasingly live into adulthood, reoperative surgery is frequently required. Although half of these are valve-related procedures, little is known regarding early and late outcomes, and factors associated with adverse outcomes.

关键词： 针织物   酚黄变   高温黄变   预定形  

摘要： 浅白色锦氨针织物在生产、运输、使用等过程中部分位置容易黄变,影响产品使用寿命和美观。为了克服织物黄变,探讨首先要避免织物受到过强的光、热及避免包装材料等外在环境因素的影响;其次通过降低预定形温度,添加抗酚黄变剂、抗高温黄变剂来缓解织物潜在黄变。研究染缸内预防酚黄变的处理工艺为75℃保温20 min,抗酚黄变剂BM-2907为4.0%,柠檬酸0.8 g/L效果较好;预定形温度190℃,定形速度30 m/min,后定形温度130~140℃,抗高温黄变剂FK-16为4.0 g/L,能够一定程度上解决织物高温黄变。

关键词： 纺织品   检测   物理性能  

摘要： 基于日常检验工作,充分考虑季节变化对纺织产品选用面料成分和性能的影响,有代表性地筛选出年度检验数据,对纺织品物理性能测试数据中的主要不合格项目进行分析。结果表明,主要不合格项目集中在接缝性能、起毛起球性能和水洗尺寸变化率3项。针对以上不合格项目,通过对面料成分、工艺、结构、加工后整理等方面的原因分析,从物理、化学等方面提出整改建议,从而提升产品质量。

关键词： CAD   B-spline   Approximation   Parameterization   Knot placement   Generative modeling  

摘要： This paper presents a learning-based method to solve the traditional parameterization and knot placement problems in B-spline approximation. Different from conventional heuristic methods or recent AI-based methods, the proposed method does not assume ordered or fixed-size data points as input. There is also no need for manually setting the number of knots. Parameters and knots are generated in an associative way to attain better parameter-knot alignment, and therefore a higher approximation accuracy. These features are attained by using a new generative model SplineGen, which casts the parameterization and knot placement problems as a sequence-to-sequence translation problem. It first adopts a shared autoencoder model to learn a 512-D embedding for each input point, which has the local neighborhood information implicitly captured. Then these embeddings are autoregressively decoded into parameters and knots by two associative decoders, a generative process automatically determining the number of knots, their placement, parameter values, and their ordering. The two decoders are made to work in a coordinated manner by a new network module called internal cross-attention. Once trained, SplineGen demonstrates a notable improvement over existing methods, with one to two orders of magnitude increase in approximation accuracy on test data.