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关键词： 废旧纺织品   Hough变换   能量曲线法   小波变换   织物密度   图像处理技术  

摘要： 为实现机织物密度的高精度检测,方便后续废旧织物纱线拆解与回收工作,首先将采集的原始图像进行裁剪与滤波处理,并针对织物纱线间隙阴影范围过大容易造成直线误检的问题,对传统Hough直线检测算法进行改进,限定角度检索范围并增加距离检测函数bwdist,通过检测出的阴影连通区域中心线实现图像直线检测,进行图像偏角矫正。随后通过能量曲线的方法确定小波变换的最优分解级数,在小波变换中增加Graythred函数,确定二值化最佳阈值,提高经小波变换处理后图像的可识别精度,并设定0和1像素点比例关系确定最佳阈值,实现图像平滑处理。试验验证表明:与人工计数结果对比,算法改进前后经密的识别平均相对误差由5.14%降低至2.86%,纬密的识别平均相对误差由7.87%降低至4.61%。认为:通过对Hough直线检测和小波变换算法的改进,可以提高机织物密度的检测精度。

关键词： ABCA1   ABCA1-seRNA   atherosclerotic cardiovascular disease (ASCVD)   cholesterol   inflammation   macrophage   super-enhancer   ABCA1-seRNA   ATP-binding cassette A1 super enhancer RNA   ASCVD   atherosclerotic cardiovascular disease   ATAC   assays for transposase-accessible chromatin with high-throughput sequencing   BL-Hi-C   Bridge Linker High-through chromosome conformation capture   CAD   coronary artery disease   CUT&Tag   Cleavage Under Targets and Tag mentation   HDL   high-density lipoprotein   LXRa   liver X receptor-alpha   MED23   Mediator complex subunit 23   RCT   cholesterol reversal transport   RXRa   retinoid X receptor-alpha  

摘要： We describe a previously uncharacterized ATP-binding cassette A1 super enhancer RNA (ABCA1-seRNA)-mediated cholesterol efflux. In addition, it promoted macrophage inflammatory cytokine release, and was causally correlated with coronary artery disease severity. Mechanistically, ABCA1-seRNA upregulated cholesterol efflux by interacting with mediator complex subunit 23 and recruiting retinoid X receptor-alpha and liver X receptor-alpha to promote ABCA1 transcription in a cis manner. Meanwhile, ABCA1-seRNA induced P65 ubiquitination degradation, and thereby repressed the macrophage inflammatory response. Consistently, overexpression of ABCA1-seRNA in ApoE^−/− mice decreased plasma lipids, cytokines, and atherosclerotic plaques. These findings indicate ABCA1-seRNA is a critical epigenetic regulator that maintains cholesterol homeostasis and modulates inflammation, thus promising a therapeutic target for atherosclerotic cardiovascular diseases.

关键词： antifouling finishing   fluorine-free   hydrophobicity   oleophobicity   surface roughness  

摘要： Antifouling textiles have been a hot research field in the last ten *** lately,the European Union(EU)is expected to ban the production of C6 fluorinated water repellent,oil repellent and antifouling agents from 2025,achieving complete fluoride-free antifouling *** the context of the current policy regulations on fluorine-free treatment in the waterproof,oil repellent and antifouling finishing field,this paper conducts a literature survey and comprehensive understanding of the current research status and trend in fluorine-free antifouling *** and Carrot2 are used to conduct a literature review of the latest papers in two databases,Web of Science(WoS)and China National Knowledge Infrastructure(CNKI).Firstly,the theoretical evolution and technical characteristics of textiles antifouling finishing technology are systematically discussed,and the technological differences of antifouling finishing textiles for different demands are ***,the three main stages of the development of textile antifouling finishing technology and its corresponding finishing methods are ***,three paths for the future development of fluorine-free antifouling finishing are prospected:construction of low surface energy,construction of uniform rough surface and low surface energy,and construction of multistage rough surface with low surface *** facilitate the transition of the industrial sector to fluorine-free,regulatory restrictions could be strengthened by enhancing the sampling inspection of apparel fabrics,detecting fluorine in wastewater discharges and restricting the production of fluorine-containing finishing agents by manufacturers.

关键词： 二冬膏   HPLC-CAD   麦冬皂苷D   麦冬皂苷D   菝葜皂苷元   薯蓣皂苷  

摘要： 目的:建立HPLC-CAD法同时测定二冬膏中麦冬皂苷D、麦冬皂苷D′、菝葜皂苷元和薯蓣皂苷4种成分含量的方法。方法:色谱柱为InfinityLab Poroshell 120 Aq-C_(18)色谱柱(150 mm×3.0 mm,2.7μm),流动相乙腈-0.1%甲酸水溶液梯度洗脱,柱温35℃,流速1 ml/min,进样量10μl。电喷雾检测器的雾化器温度为35℃,检测频率为10 Hz。结果:麦冬皂苷D、麦冬皂苷D′、菝葜皂苷元和薯蓣皂苷分别在20~300、10~150、30~450和60~900μg/ml浓度范围内与峰面积线性关系良好(r=0.9996、0.9998、0.9998、0.9997),麦冬皂苷D、麦冬皂苷D′、菝葜皂苷元和薯蓣皂苷平均加样回收率分别为98.5%(RSD为0.5%)、98.9%(RSD为1.1%)、99.1%(RSD为1.2%)和100.4%(RSD为0.9%)。结论:该方法可用于二冬膏中麦冬皂苷D、麦冬皂苷D′、菝葜皂苷元和薯蓣皂苷的含量测定。

关键词： 中国纺织出版社   民族文化交流   历史影像   工艺技法   视觉特征   文化寓意   传统纺织   纺织品  

摘要： 由中国纺织出版社有限公司出版,梁惠娥主编,阿黛尔·张、李坤元合著的《世界民族纺织图案视觉交汇:博采图案共揽胜,异彩纷呈同瑰丽》(以下简称《世界民族纺织图案视觉交汇》)一书,聚焦世界民族纺织图案,以来自亚洲、非洲、南美洲等地的珍贵纺织品和历史影像为研究样本,深入浅出地展现了各类纺织图案的工艺技法、样式特征及文化寓意。该书着眼世界范围内的民族纺织品遗存,探究其图案的视觉特征和表现形式,为传统纺织历史、中外民族文化交流的探索提供了案例参照。

关键词： 相变材料   蓄热调温   复合相变   纺织品  

摘要： 为推进复合相变调温纺织品的深入研究和实际应用,针对目前复合相变调温纺织品的研究现状,采用文献综述和分析的研究方法,首先对相变材料的基本概念和调温机制进行阐述,然后重点综述复合相变调温纺织品在光热转换、红外伪装、热防护、抗菌、热致变色及自愈合方面的研究进展,针对复合相变调温纺织品当前研究中存在的问题和挑战以及未来的发展方向进行展望,可在为复合相变调温纺织品的进一步开发和应用提供有价值的理论参考和实践指导。

关键词： 孕妇   血管内皮钙黏蛋白   免疫球蛋白G抗体效价   新生儿溶血病   诊断  

摘要： 目的探讨联合检测孕妇血浆血管内皮钙黏蛋白(VE-Cad)水平和免疫球蛋白G(IgG)抗体效价诊断新生儿溶血病的临床价值。方法选取2022年3月至2022年12月安阳市第三人民医院100例O型Rh(D)阳性孕晚期孕妇作为研究对象,按照新生儿是否发生溶血病分为发生组(48例)和未发生组(52例)。检测VE-Cad水平、IgG抗体效价,并进行新生儿溶血试验,对血清学进行检测,筛查不规则抗体。将两组一般资料、孕妇VE-Cad水平、IgG抗体效价占比比较,分析孕妇VE-Cad水平、IgG抗体效价和新生儿胆红素之间的关系,采用受试者操作特征(ROC)曲线分析联合检测孕妇VE-Cad水平和IgG抗体效价诊断新生儿溶血病的效能。结果将两组孕妇年龄、妊娠次数、分娩方式、胎龄、新生儿性别、新生儿血型、新生儿体重进行对比,差异均无统计学意义(均P>0.05);未发生组孕妇血浆VE-Cad水平为(0.76±0.19)ng/mL,发生组孕妇血浆VE-Cad水平为(2.42±0.52)ng/mL,经对比,发生组孕妇上述指标水平高于未发生组(t=21.524,P<0.001);发生组孕妇血清IgG抗A/B抗体效价为1∶256、≥1∶512的占比高于未发生组(均P<0.05),而发生组和未发生组孕妇血清IgG抗A/B抗体效价为1∶64、1∶128的占比经对比,差异均无统计学意义(均P>0.05);孕妇VE-Cad和新生儿胆红素之间呈正相关(r=0.431,P<0.05);联合检测孕妇VE-Cad水平和IgG抗体效价的诊断结果显示,其诊断新生儿溶血病的曲线下面积(AUC)为0.906,比单独采用VE-Cad水平、IgG抗体效价诊断的AUC值(0.770、0.859)高,且将上述指标联合应用于新生儿溶血病的诊断中,灵敏度、特异度均比单独检测高(均P<0.05)。结论在对新生儿溶血病进行诊断时,相较于单纯应用VE-Cad水平和IgG抗体效价,将上述指标联合诊断的应用价值较高。

关键词： 市场监督管理   行业国家标准   化学试剂   纺织行业   纺织品   国家标准化管理委员会  

摘要： 【本刊讯】9月29日,国家市场监督管理总局(国家标准化管理委员会)发布了公告(2024年第22号),国家市场监督管理总局(国家标准化管理委员会)批准《化学试剂高氯酸》等511项国家标准,其中纺织行业5项。现介绍如下。

摘要： Background: Despite undergoing intervention many patients still experience recurrent angina & residual ischemia. Nebivolol, offers additional benefits like antioxidant & nitric oxide-mediated endothelial vasodilation which may be promising for CAD...

关键词： Rocket Fins   CAD   CFD   3D printing   Subsonic wind tunnel  

摘要： The stability of a rocket during flight is the one of the most crucial factors from the perspective of a design *** stability,a rocket is equivalent to an uncontrolled and unpredictable,high-speed *** control can stabilize flight in one of two ways:by shifting the center of pressure(CP)behind the center of gravity(CG);or by producing a spin along the axis of *** study aims to induce this spin or rotation through the design of *** study is a synergistic application of few of the many engineering practices and *** has generated airfoil profiles for rotation inducing fins using NACA database;developed a software model using SolidWorks to run analysis using commercial FEA,CFD and stability analysis software;and additively manufactured a prototype model for experimental testing in a subsonic wind ***,which is responsible for spin,was measured experimentally at different locations across the length of the model and was found to have comparable values as those obtained for CFD *** experiment also displayed a longitudinally stable spin of the model.