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制造业自动化 2024年第3期46卷 208-211页

作者：汪灵瑶韩开放畅攀人王薇封胜军北自所(北京)科技发展股份有限公司北京100120 荣盛石化股份有限公司杭州311247

介绍了一种用于化纤自动包装的翻转机构。阐述了自动包装系统的工艺流程、翻转机构结构和工艺流程方案设计以及翻转机构到位控制方案设计和实现,并对使用过程中存在的问题进行了优化。目前该翻转机构已经在某化纤公司投入使用,运行良好... 详细信息

介绍了一种用于化纤自动包装的翻转机构。阐述了自动包装系统的工艺流程、翻转机构结构和工艺流程方案设计以及翻转机构到位控制方案设计和实现,并对使用过程中存在的问题进行了优化。目前该翻转机构已经在某化纤公司投入使用,运行良好,达到了设计要求。

关键词：翻转机构自动包装闭环控制定位优化

宏基因组二代测序和细胞因子在PD相关腹膜炎早期诊断中的应用

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中国血液净化 2024年第5期23卷 351-355页

作者：何萌萌符姣姚玲邵小淇李楠张培安徽医科大学第一附属医院肾脏内科合肥230031

目的探究宏基因组二代测序(metagenomic second-generation sequencing,mNGS)技术在早期检测腹膜透析相关腹膜炎(peritoneal dialysis-associated peritonitis,PDAP)患者细菌感染的病原学价值,了解不同细菌感染类型中细胞因子分布差异,构建相关风险预测模型。方法收集2020年4月─2023年4月就诊于安徽医科大学第一附属医院,符合国际腹膜透透协会(international society for peritoneal dialysis,ISPD)诊断标准的腹膜透析(peritoneal dialysis,PD)患者的临床资料,同时将其入院4小时内PD流出液送检mNGS检查及普通培养,并测定上清液中细胞因子水平,比较mNGS检测与实验室微生物培养病原学诊断结果,综合临床意义分为革兰氏阳性菌(G+菌)组、革兰氏阴性菌(G-菌)组和培养阴性(G0)组,比较2组细胞因子水平差异,确认危险因素并构建风险预测模型,同时进行效能检测。结果共50例PD相关腹膜炎患者纳入本研究,mNGS检测中41例患者检出病原体,检测阳性率高于微生物培养(χ^(2)=0.059,P=0.440),mNGS检测时间低于微生物培养(t=5.180,P<0.001)。多因素Logistics回归分析提示PD液中高白细胞介素(IL)10(OR=1.010,95%CI:1.000~1.020,P=0.024)、低IL-6(OR=0.620,95%CI:0.360~0.890,P=0.038)及高血清降钙素原(OR=1.200,95%CI:1.050~1.530,P=0.016)、低C反应蛋白水平(OR=1.014,95%CI:1.010~1.050,P=0.035)为PDAP预测G-菌感染的独立危险因素。ROC曲线及列线图结果显示上述炎症因子联合较单一因子对预测G-菌感染价值更大。结论mNGS在早期快速检测PDAP病原体方面显示了极大的诊断潜力,PD流出液中细胞因子IL-6、IL-10及血清降钙素原、C反应蛋白水平的整合提高了mNGS结果解释的精确度,依据细胞因子构建的风险预测模型可以较好区分不同种类细菌相关PDAP腹膜炎的患者。

关键词：腹膜透析腹膜炎宏基因组二代测序分子诊断标志物

高效液相色谱-串联质谱法检测牛组织和奶中咪多卡残留的研究

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中国兽药杂志 2024年第4期58卷 69-75页

作者：白玉惠孙红洋张骊朱馨乐沈昕黄耀凌中国兽医药品监察所(农业农村部兽药评审中心)国家兽药残留基准实验室北京100081

建立了一种检测牛组织和牛奶中咪多卡残留检测的高效液相色谱-串联质谱法。牛组织(肌肉、肝脏、肾脏、脂肪)和奶在NaAc缓冲体系中酶解,经HCl溶液提取,WCX固相萃取柱净化,以0.3%甲酸水溶液(含20 mM甲酸铵)和0.3%甲酸乙腈为流动相进行梯... 详细信息

建立了一种检测牛组织和牛奶中咪多卡残留检测的高效液相色谱-串联质谱法。牛组织(肌肉、肝脏、肾脏、脂肪)和奶在NaAc缓冲体系中酶解,经HCl溶液提取,WCX固相萃取柱净化,以0.3%甲酸水溶液(含20 mM甲酸铵)和0.3%甲酸乙腈为流动相进行梯度洗脱,在HILIC色谱柱上分离,在电喷雾正离子(ESI^(+))模式下,用多反应监测(MRM)模式检测,同位素内标法定量。结果表明:咪多卡在2.5~1000 ng/mL的浓度范围内呈现良好线性关系,相关系数(R^(2))大于0.99;咪多卡在牛组织和奶中的检测限均为10μg/kg,定量限均为20μg/kg;咪多卡在牛组织和奶中20~4000μg/kg添加浓度水平上的回收率在70.9%~109%范围内;批内RSD在0.55%~9.59%之间,批间RSD在2.21%~12.1%之间。该方法具有灵敏度高、定量准确,重复性好等特点,可以满足牛组织和奶中咪多卡残留检测的要求。

关键词：牛组织牛奶咪多卡残留高效液相色谱-串联质谱法

Nanodiamond/Ti_(3)C_(2) MXene-coated quartz crystal microbalance humidity sensor with high sensitivity and high quality factor

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Rare Metals 2024年第6期43卷 2719-2729页

作者： yao yao Qiao Chen Yan-Qi Li Xian-He Huang Wei-Wei ling Zhe-MiaoXie Jia-QiWang Chang-Ming Chen College of Communication Engineering Chengdu University of Information TechnologyChengdu 610225China School of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Advanced Micro-/Nano-Devices Lab Department of Systems Design EngineeringUniversity of WaterlooWaterlooON N2L 3GlCanada

To address the challenge of achieving both high sensitivity and a high quality factor in quartz crystal microbalance(QCM)humidity sensors,a nanodiamond(ND)/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was *** material characteristics of ND,Ti_(3)C_(2)MXene,and ND/Ti_(3)C_(2)MXene composite were analyzed by transmission electron microscopy(TEM)and Fourier transform infrared(FTIR)*** experimental results demonstrated that the hydrophilic ND nanoparticles coated on Ti_(3)C_(2) MXene nanosheet prevented the self-stacking of Ti_(3)C_(2)MXene and enhanced the sensitivity of Ti_(3)C_(2) MXene-based QCM humidity ***,the high mechanical modulus of Ti_(3)C_(2) MXene material helped ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor to achieve a high quality factor(>20,000).ND/Ti_(3)C_(2)MXene compositecoated QCM humidity sensor exhibited a sensitivity of 82.45 Hz/%RH,a humidity hysteresis of 1.1%RH,fast response/recovery times,acceptable repeatability,and good stability from 11.3%RH to 97.3%*** response mechanism of ND/Ti_(3)C_(2) MXene composite-coated QCM humidity sensor was analyzed in combination with a bi-exponential kinetic adsorption ***,the potential application of ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was demonstrated through its frequency response to wooden blocks with different moisture contents.

关键词： Humidity sensor Quartz crystal microbalance Nanodiamond Ti_(3)C_(2)MXene High quality factor

Computational and dark-field ghost imaging with ultraviolet light

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Photonics Research 2024年第2期12卷 226-234页

作者： JIAQI SONG BAOLEI LIU yao WANG CHAOHAO CHEN XUCHEN SHAN XIAOLAN ZHONG ling-AN WU FAN WANG School of Physics Beihang UniversityBeijing 102206China Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems Department of Electronic Materials EngineeringResearch School of PhysicsThe Australian National UniversityCanberraACT 2600Australia Institute of Physics Chinese Academy of SciencesBeijing 100190China

Ultraviolet(UV)imaging enables a diverse array of applications,such as material composition analysis,biological fluorescence imaging,and detecting defects in semiconductor ***,scientific-grade UV cameras with high quantum efficiency are expensive and include complex thermoelectric cooling ***,we demonstrate a UV computational ghost imaging(UV-CGI)method to provide a cost-effective UV imaging and detection *** applying spatial–temporal illumination patterns and using a 325 nm laser source,a singlepixel detector is enough to reconstruct the images of *** use UV-CGI to distinguish four UV-sensitive sunscreen areas with different densities on a ***,we demonstrate dark-field UV-CGI in both transmission and reflection *** only collecting the scattered light from objects,we can detect the edges of pure phase objects and small scratches on a compact *** results showcase a feasible low-cost solution for nondestructive UV imaging and *** combining it with other imaging techniques,such as hyperspectral imaging or time-resolved imaging,a compact and versatile UV computational imaging platform may be realized for future applications.

关键词： ghost illumination versatile

Primary biliary cholangitis presenting with granulomatous lung disease misdiagnosed as lung cancer:A case report

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World Journal of Clinical Cases 2024年第2期12卷 354-360页

作者： Shan-Li Feng Jun-yao Li Chun-ling Dong Department of Respiratory and Critical Care Medicine The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina

BACKGROUND There are few cases of pulmonary granulomatous changes secondary to primary biliary cirrhosis(PBC).No case of granulomatous lung disease secondary to PBC misdiagnosed as lung cancer had been *** SUMMARY A middle-aged woman presented with lung nodules and was misdiagnosed with lung cancer by positron emission tomography/computed *** underwent left lobectomy,and the pathology of the nodules showed granulomatous inflammation,which was then treated with ***,a new nodule *** investigation with lung biopsy and liver serology led to the diagnosis of PBC,and chest computed tomography indicated significant reduction in the pulmonary nodule by treatment with methylprednisolone and ursodeoxycholic *** Diagnosis of pulmonary nodules requires integrating various clinical data to avoid unnecessary pulmonary lobectomy.

关键词： Granulomatous lung diseases Primary biliary cirrhosis Differential diagnosis Misdiagnosis Lung cancer Case report

Repairable,Recyclable,and Regenerable Macrocycle Organic Polymer

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Chinese Journal of Chemistry 2023年第12期41卷 1497-1503页

作者： Yifan Liu Yuanyuan Chen Huacan Wu Xiaowei Chen Donghui Wang Xiaocheng Zhang Shiya Zheng yao ling Baoshuai Liang Jiamao Chen Yu Dong Weiguo Huang College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350007 China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao West Road Fuzhou Fujian 350002 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350002 China University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China

Covalent/metal organic frameworks are highly attractive due to their tunable structure and properties,and broad applications in multiple ***,they still suffer from numbers of drawbacks including low solubility,harsh synthesis and fabrication,and low mechanical ***,we report a new organic framework consisting of macrocycles and organic frames in its periodic structure,and denote it as macrocycle organic polymer(MOP).The size-tunable macrocycles containing peripheral furan units are synthesized by anionic ring-opening polymerization,which undergo a reversible Diels-Alde reaction with bismaleimide to generate/degrade MOPs at given *** on above features,MOPs exhibit excellent flexibility,healable ability and recycle ***,owing to the“living”nature of anionic ring-opening polymerization,MOPs can self-grow into bigger sizes in the presence of monomer and catalysis,analogs to the living ***,their high porosity and rich thioether structure enable them as good metal ion absorbers and promising applications in wearable electronics.

关键词： Macrocycle organic polymer Healable Recyclable Regenerable Wearable electronics Ring-opening polymerization Adsorption

Real-Time Detection and Instance Segmentation of Strawberry in Unstructured Environment

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Computers, Materials & Continua 2024年第1期78卷 1481-1501页

作者： Chengjun Wang Fan Ding Yiwen Wang Renyuan Wu Xingyu yao Chengjie Jiang Liuyi ling School of Artificial Intelligence Anhui University of Science and TechnologyHuainan232001China School of Mechanical Engineering Anhui University of Science and TechnologyHuainan232001China

The real-time detection and instance segmentation of strawberries constitute fundamental components in the development of strawberry harvesting ***-time identification of strawberries in an unstructured envi-ronment is a challenging *** instance segmentation algorithms for strawberries suffer from issues such as poor real-time performance and low *** this end,the present study proposes an Efficient YOLACT(E-YOLACT)algorithm for strawberry detection and segmentation based on the YOLACT *** key enhancements of the E-YOLACT encompass the development of a lightweight attention mechanism,pyramid squeeze shuffle attention(PSSA),for efficient feature ***,an attention-guided context-feature pyramid network(AC-FPN)is employed instead of FPN to optimize the architecture’s ***,a feature-enhanced model(FEM)is introduced to enhance the prediction head’s capabilities,while efficient fast non-maximum suppression(EF-NMS)is devised to improve non-maximum *** experimental results demonstrate that the E-YOLACT achieves a Box-mAP and Mask-mAP of 77.9 and 76.6,respectively,on the custom ***,it exhibits an impressive category accuracy of 93.5%.Notably,the E-YOLACT also demonstrates a remarkable real-time detection capability with a speed of 34.8 *** method proposed in this article presents an efficient approach for the vision system of a strawberry-picking robot.

关键词： YOLACT real-time detection instance segmentation attention mechanism strawberry

南京地区≥60岁老年人群4种代谢综合征诊断标准适用性比较

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江苏预防医学 2024年第2期35卷 165-167,194页

作者：景世保邓天瑞姚铸玲王志勇唐伟徐斐南京市六合区疾病预防控制中心江苏南京211500 南京医科大学附属南京疾病预防控制中心南京医科大学公共卫生学院南京医科大学附属老年医院

目的比较4种代谢综合征诊断标准(CDS、JIS、IDF、ATPⅢ)在南京地区≥60岁老年人群中的适用性。方法2017年4—10月,采用分层整群抽样方法,在南京地区抽取年龄≥60岁居民15545名,采用入户面对面问卷调查与现场测量及实验室检测,计算4种标... 详细信息

目的比较4种代谢综合征诊断标准(CDS、JIS、IDF、ATPⅢ)在南京地区≥60岁老年人群中的适用性。方法2017年4—10月,采用分层整群抽样方法,在南京地区抽取年龄≥60岁居民15545名,采用入户面对面问卷调查与现场测量及实验室检测,计算4种标准下代谢综合征(MS)患病率,使用Kappa检验比较一致性。结果南京地区≥60岁老年人群在JIS标准下MS患病率最高(43.1%),其次为ATPⅢ标准(39.3%)、IDF标准(32.3%)、CDS标准(28.3%)。CDS、ATPⅢ、IDF标准确诊病例各组分占比最高均为高血压(91.2%、85.5%、84.2%),JIS标准下组分占比最高为中心型肥胖(88.4%)。JIS标准和ATPⅢ标准诊断一致性极好,一致率为96.2%,Kappa值为0.92(P<0.01)。结论南京地区≥60岁老年人群4种MS标准诊断的患病率存在差异,JIS标准诊断的患病率最高,运用JIS标准和ATPⅢ标准有助于老年人群MS的早发现。

关键词：代谢综合征诊断标准老年人群适用性

Sustained remission of Cronkhite-Canada syndrome after corticosteroid and mesalazine treatment: A case report

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World Journal of Clinical Cases 2024年第14期12卷 2431-2437页

作者： Ya-Lan Chen Rui-yao Wang ling Mei Ran Duan Department of Gastroenterology The Affiliated Hospital of Hebei UniversityBaoding 071000Hebei ProvinceChina Department of Thoracic Surgery The Affiliated Hospital of Hebei UniversityBaoding 071000Hebei ProvinceChina Department of Medical Imageology The Affiliated Hospital of Hebei UniversityBaoding 071000Hebei ProvinceChina

BACKGROUND Cronkhite-Canada syndrome(CCS)is a rare disease of unknown *** optimal treatment for CCS remains *** with corticosteroids is considered the mainstay treatment because of its high efficacy,but the therapeutic strategy for steroid-resistant CCS is not yet *** SUMMARY This is the case of an 81-year-old woman who was diagnosed with *** her severe diarrhea,nausea,vomiting,and hypoproteinemia,hormone therapy(40 mg/d)was administered,and the symptoms improved within 1 *** 3 mo,the patient had no obvious *** polyps were significantly reduced on review gastroscopy and colonoscopy,thus hormone reduction gradually *** hormone level was maintained at 10 mg/d after 6 *** the age of the patient and the side effects of hormones,the patient had no obvious ***,hormone drugs were discontinued,and mesalazine was administered orally at 3 g/*** patient's symptoms continued to improve after a follow-up of 5 *** Corticosteroids and mesalazine are potential treatment options for CCS.

关键词： Cronkhite-Canada syndrome Corticosteroids Mesalazine Gastrointestinal polyposis Case report