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Self-powered sensor based on compressible ionic gel electrolyte for simultaneous determination of temperature and pressure

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InfoMat 2024年第7期6卷 62-75页

作者： Junjie Zou Yanan Ma Chenxu Liu Yimei Xie Xingyao Dai Xinhui Li Shuxuan Li Shaohui Peng Yang Yue Shuo Wang ce-Wen Nan Xin Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices&International School of Materials Science and EngineeringWuhan University of TechnologyWuhanthe People's Republic of China Hubei Key Laboratory of energy Storage and Power Battery School of MathematicsPhysics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyanthe People's Republic of China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefeithe People's Republic of China State Key Lab of New ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijingthe People's Republic of China

The simultaneous detection of multiple stimuli,such as pressure and temperature,has long been a persistent challenge for developing electronic skin(eskin)to emulate the functionality of human ***,the demand for integrated power supply units is an additional pressing concern to achieve its lightweightness and ***,we propose a self-powered dual temperature–pressure(SPDM)sensor,which utilizes a compressible ionic gel electrolyte driven by the potential difference between MXene and Al *** SPDM sensor exhibits a rapid and timely response to changes in pressure-induced deformation,while exhibiting a slow and hysteretic response to temperature *** distinct response characteristics enable the differentiation of current signals generated by different stimuli through machine learning,resulting in an impressive accuracy rate of 99.1%.Furthermore,the developed SPDM sensor exhibits a wide pressure detection range of 0–800 kPa and a broad temperature detection range of 5–75C,encompassing the environmental conditions encountered in daily human *** dual-mode coupled strategy by machine learning provides an effective approach for temperature and pressure detection and discrimination,showcasing its potential applications in wearable electronics,intelligent robots,human–machine interactions,and so on.

关键词： e-skin gel electrolyte machine learning self-powered dual-mode sensor

随钻电磁波传播方位电阻率仪地质导向关键技术

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地球物理学报 2015年第5期58卷 1767-1775页

作者：刘乃震王忠刘策中国石油长城钻探工程公司北京100101 Bitswave Inc. Sugar LandTexas77478United States

随钻电磁波传播方位电阻率仪器在钻井过程中可以提供地层边界的方位及距离信息,因此在地质导向应用中发挥着重要作用,是提高油气资源开采率的重要手段.该技术是国外近十年来发展起来的前沿技术,在国内尚属空白.本文首次构思并实现了一... 详细信息

随钻电磁波传播方位电阻率仪器在钻井过程中可以提供地层边界的方位及距离信息,因此在地质导向应用中发挥着重要作用,是提高油气资源开采率的重要手段.该技术是国外近十年来发展起来的前沿技术,在国内尚属空白.本文首次构思并实现了一种应用"交联天线"的随钻电磁波传播方位电阻率仪器,并从天线结构,测量原理,数据处理以及地层电阻率成像及解释等几个方面详细阐述.交联天线由极化方向正交的线圈串绕组成,同时具有方位探测和地层背景电阻率测量的功能.通过分析交联天线的电压在仪器旋转过程中的变化规律,可以计算出仪器所在地层的电阻率,判断地层边界的方位以及估算地层边界相距仪器的距离.该随钻电磁波传播方位电阻率仪器还包括用于常规电磁波传播电阻率测试的多频多测距补偿天线结构.结合地层电阻率测量及其在方位上的相对变化,可以实现对地层电阻率的全方位成像.该仪器在国内油田进行了多次实井测试,测试结果证明仪器能够在水平井地质导向中准确提供仪器所在地层的电阻率,以及地层边界方位和距离信息.已有实井测试结果表明仪器在油层(100Ωm)和泥岩(5Ωm)中的地层边界探测深度分别为2.2m和1.6m,平均误差在0.2m以内.

关键词：随钻电磁波传播方位电阻率交联线圈地质导向边界识别测距电阻率成像

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低雷诺数微尺度蜿蜒通道黏弹性流体快速混合

工程热物理学报 2022年第3期43卷 776-779页

作者：杨海娥姚贵策文东升北京航空航天大学航空科学与工程学院人机环境工程系北京100191

充分混合是微流控中诸多实验的前提。然而目前在微尺度下实现短距离充分混合仍困难且不经济。具有显著黏弹性的低浓度聚合物溶液被认为是低雷诺数下增强混合的有效方式。该项研究工作中,我们通过采用正交注入的方法,提出了一种十分有效... 详细信息

充分混合是微流控中诸多实验的前提。然而目前在微尺度下实现短距离充分混合仍困难且不经济。具有显著黏弹性的低浓度聚合物溶液被认为是低雷诺数下增强混合的有效方式。该项研究工作中,我们通过采用正交注入的方法,提出了一种十分有效的微混合器。通过可视化和统计学分析,半定量表征了混合性能,分析了其中与弹性不稳定相关的流动学解释,实现了微尺度短距有效混合增强。

关键词：微混合器黏弹性流体弹性不稳定性蜿蜒通道混合增强

Consumption of gluten with gluten-degrading enzyme by celiac patients: A pilot-study

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World Journal of Gastroenterology 2013年第35期19卷 5837-5847页

作者： Greetje J Tack Jolanda MW van de Water Maaike J Bruins engelina MC Kooy-Winkelaar Jeroen van Bergen Petra Bonnet Anita ce Vreugdenhil Ilma Korponay-Szabo Luppo edens B Mary e von Blomberg Marco WJ Schreurs Chris J Mulder Frits Koning Department of Gastroenterology and Hepatology VU University Medical Centre DSM Biotechnology centre Department of Immunohematology and Blood Transfusion Leiden University Medical Centre Department of Pathology VU University Medical Centre Department of Paediatrics University Hospital Maastricht Department of Paediatrics University of Debrecen Paediatric Research centre University of Tampere

AIM:To assesses the safety and efficacy of Aspergillus niger prolyl endoprotease(AN-PeP)to mitigate the im-munogenic effects of gluten in celiac ***:Patients with initial diagnosis of celiac disease as confirmed by positive serology with subtotal or total villous atrophy on duodenal biopsies who adhere to a strict gluten-free diet(GFD)resulting in normalised antibodies and mucosal healing classified as Marsh 0 orⅠwere *** a randomised double-blind placebo-controlled pilot study,patients consumed toast(approximately 7 g/d gluten)with AN-PeP for 2 wk(safety phase).After a 2-wk washout period with adherence of the usual GFD,14 patients were randomised to gluten intake with either AN-PeP or placebo for 2 wk(efficacy phase).Measurements at baseline included complaints,quality-of-life,serum antibodies,immunophenotyping of T-cells and duodenal mucosa ***,serum and quality of life questionnaires were collected during and after the safety,washout and efficacy *** biopsies were collected after the safety phase and after the efficacy phase.A change in histological evaluation according to the modified Marsh classification was the primary ***:In total,16 adults were enrolled in the *** serious adverse events occurred during the trial and no patients withdrew during the *** mean score for the gastrointestinal subcategory of the celiac disease quality(CDQ)was relatively high throughout the study,indicating that AN-PeP was well *** the efficacy phase,the CDQ scores of patients consuming gluten with placebo or gluten with AN-PeP did not significantly deteriorate and moreover no differences between the groups were *** the efficacy phase,neither the placebo nor the AN-PeP group developed significant antibody *** IgA-eM concentrations remained negative in both *** patients were excluded from entering the efficacy phase as their mucosa showed an increase oftwo Marsh steps a

关键词： celiac disease Gluten enzyme Prolyl endoprotease Aspergillus niger prolyl endoprotease Treatment Adverse events efficacy IgA-tTG intestinal deposits

ADHD症状与初中生学业表现的关系 ——社会支持与一般自我效能感的中介作用分析

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ADHD症状与初中生学业表现的关系 ——...

作者：凯琪（Katherine Mae e. ca（?）ete）海南师范大学

学位级别：硕士

目的:注意缺陷多动障碍（ADHD）的症状会反映在学习行为中,进而造成学业功能损害,但这种损害也受有利的心理社会因素保护而得以减轻。本研究旨在了解注意缺陷多动障碍症状对初中生学业问题表现的影响,并检验社会支持和一般自我效能感是... 详细信息

目的:注意缺陷多动障碍（ADHD）的症状会反映在学习行为中,进而造成学业功能损害,但这种损害也受有利的心理社会因素保护而得以减轻。本研究旨在了解注意缺陷多动障碍症状对初中生学业问题表现的影响,并检验社会支持和一般自我效能感是否在两者的关系中具有中介作用。了解初中生ADHD及其对学业问题行为的影响,可以丰富异常心理学、教育心理学和发展心理学的内容。提高ADHD学生功能损害的预防和干预水平。方法:随机抽取海南省海口市442名初中生完成了《斯诺佩评估量表》（SNAP-Ⅳ）、《大学生社会支持量表》（USSSS）、《一般自我效能感量表》（GSeS）和《青少年学业问题行为清单》（AAPBC）的自评,并用SPSS26.0对对收集到的数据进行了相关分析。结果:通过验证性因素分析对量表的效度进行验证,结果表明,Ve值均大于0.5且CR值均大于0.7,说明聚合效度较高。结果还表明,（1）442名被试的ADHD症状与学业问题行为总体表现较为轻微,其平均值分别为1.82和1.79,一般自我效能感水平与社会支持水平在中等水平,其平均值分别为2.64和3.76。（2）相关分析结果显示:学业问题行为与ADHD症状呈显著正相关（r=0.76）,ADHD症状与一般自我效能感（r=-0.25）、社会支持（r=-0.32）呈弱负相关,学业问题行为与一般自我效能感（r=-0.20）、社会支持（r=-0.26）与呈弱负相关。（3）多元线性回归分析发现ADHD症状、社会支持和一般自我效能感三个自变量对因变量学业问题行为的解释能力为60%,拟合度良好（t=22.69,p＜0.001;t=-3.67,p＜0.01;t=-2.57,p＜0.05）,其中ADHD症状是预测的学业问题行为的主要变量。（4）采用bootstrap方法考察社会支持（Boot Se=0.01,Boot LLCI=0.01,Boot ULCI=0.06）和一般自我效能感（Boot Se=0.01,Boot LLCI=0.004,Boot ULCI=0.05）对初中生ADHD症状与学业问题行为的中介作用,发现社会支持和一般自我效能感对ADHD症状与学业问题行为的关系均具有部分中介作用。也就是说,当自变量增加一个单位时,ADHD症状对因变量学业问题行为的影响将通过中介变量社会支持增加单位。此外,ADHD症状对初中生学习问题行为的影响可以通过一般自我效能感变量增加。结论:ADHD症状与学业问题表现高度正相关,一般自我效能感和社会支持对初中生ADHD症状与学业问题表现的关系起部分中介作用。提示学生在学习过程中获得社会支持和良好的自我效能感是非常重要的。

关键词：注意缺陷多动障碍学业问题表现一般自我效能感社会支持中介作用初中生

Composition and immuno-stimulatory properties of extracellular DNA from mouse gut flora

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World Journal of Gastroenterology 2017年第44期23卷 7830-7839页

作者： ce Qi Ya Li Ren-Qiang Yu Sheng-Li Zhou Xing-Guo Wang Guo-Wei Le Qing-Zhe Jin Hang Xiao Jin Sun The Key Laboratory of carbohydrate Chemistry and Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan University School of Food Science and Technology Jiangnan University Wuxi Maternal and Child Health Hospital Quality of Research and Development Department COFCO Fortune Food Sales&Distribution Co.Ltd. Department of Food Science University of Massachusetts 不详

AIM To demonstrate that specific bacteria might release bacterial extracellular DNA(e DNA) to exert immunomodulatory functions in the mouse small *** extracellular DNA was extracted using phosphate buffered saline with 0.5 mmol/L dithiothreitol combined with two phenol extractions. TOTO-1 iodide, a cell-impermeant and high-affinity nucleic acid stain, was used to confirm the existence of e DNA in the mucus layers of the small intestineand colon in healthy Male C57 BL/6 mice. Composition difference of e DNA and intracellular DNA(i DNA) of the small intestinal mucus was studied by Illumina sequencing and terminal restriction fragment length polymorphism(T-RFLP). Stimulation of cytokine production by e DNA was studied in RAW264.7 cells in *** TOTO-1 iodide staining confirmed existence of e DNA in loose mucus layer of the mouse colon and thin surface mucus layer of the small intestine. Illumina sequencing analysis and T-RFLP revealed that the composition of the e DNA in the small intestinal mucus was significantly different from that of the i DNA of the small intestinal mucus bacteria. Illumina Miseq sequencing showed that the e DNA sequences came mainly from Gram-negative bacteria of Bacteroidales S24-7. By contrast, predominant bacteria of the small intestinal flora comprised Grampositive bacteria. Both e DNA and i DNA were added to native or lipopolysaccharide-stimulated Raw267.4 macrophages, respectively. The e DNA induced significantly lower tumor necrosis factor-α/interleukin-10(IL-10) and IL-6/IL-10 ratios than i DNA, suggesting the predominance for maintaining immune homeostasis of the *** Our results indicated that degraded bacterial genomic DNA was mainly released by Gram-negative bacteria, especially Bacteroidales-S24-7 and Stenotrophomonas genus in gut mucus of mice. They decreased pro-inflammatory activity compared to total gut flora genomic DNA.

关键词： Bacterial extracellular DNA Flora Immunestimulatory property Gut microbiota Mouse Small intestine

Development of a RBFNN prediction model for carrot quality based on meteorological temperatures at vegetable stations

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Food and Health 2024年第2期6卷 49-57页

作者： Yu-Tong Yan Zeng-Tao Ji ce Shi Research center of Information Technology Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China National engineering Research center for Information Technology in Agriculture Beijing Academy of Agricultural and Forestry SciencesBeijing 100097China National engineering Laboratory for Agri-product Quality Traceability Beijing Academy of Agricultural and Forestry SciencesBeijing 100097China Key Laboratory of Cold Chain Logistics Technology for Agro-product Ministry of Agriculture and Rural AffairsBeijing 100097China

To evaluate and predict the quality of carrots during logistics process in North China under extreme temperature conditions,quality indicator changes of carrots were investigated,and temperature-coupled quality prediction models were *** temperatures were selected from meteorological temperature data by cluster analysis to simulate the changes in extreme temperatures during the short-term transportation of *** carrots rotted during the 48h storage *** both isothermal and nonisothermal conditions,weight loss andΔe increased while the firmness and sensory evaluation(Se)*** RBFNN performed better than the Arrhenius model in predicting weight loss andΔe,with R^(2)>0.97,MSeelative errors within±18%.The results of the predictive confidence level and standardized residual indicated the good performance of the RBFNN *** temperature-coupled prediction models of RBFNN were promising candidates for predicting the quality of vegetable products and therefore reducing economic loss of vegetable industry.

关键词： carrot extreme temperatures Temperature coupled Arrhenius Radial basis function neural network

自适应粒子群优化支持向量回归的工程系统可靠性预测

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机械工程学报 2023年第14期59卷 328-338页

作者：周策白斌叶楠河北工业大学机械工程学院天津300401 三一重工股份有限公司长沙400100

针对可靠性预测精度低的问题提出了一种支持向量机回归预测模型。在可靠性预测过程中,开发了一种结合正弦映射和自适应策略来更新惯性权重的自适应粒子群优化算法,通过增强算法的局部挖掘能力与全局搜索能力,在一定程度上提高了粒子群... 详细信息

针对可靠性预测精度低的问题提出了一种支持向量机回归预测模型。在可靠性预测过程中,开发了一种结合正弦映射和自适应策略来更新惯性权重的自适应粒子群优化算法,通过增强算法的局部挖掘能力与全局搜索能力,在一定程度上提高了粒子群算法的精度和收敛效率。基于8种测试基准函数将提出的算法与其他粒子群算法进行比较验证,结果表明,提出的自适应粒子群算法相比于其他算法具有更好的搜索能力。在此基础上,提出了一种新的自适应粒子群优化-支持向量机回归混合可靠性预测模型,对支持向量机回归的参数进行调整并预测涡轮增压器和工业机器人系统的可靠性,结果表明该混合模型在可靠性预测方面可达到实际工程精度要求。

关键词：可靠性预测支持向量机粒子群算法涡轮增压器工业机器人

中国东北地区西部～500Ma泛非期孔兹岩系地球化学特征及其地质意义

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岩石学报 2012年第9期28卷 2866-2878页

作者：董策周建波吉林大学地球科学学院长春130061

最近在兴安、额尔古纳地块均发现原岩为中基性-中酸性火山岩、陆源碎屑沉积岩及碳酸盐岩组合组成的孔兹岩系,岩石组合主要分为富铝片岩-片麻岩类和斜长角闪岩两类。岩石地球化学特征表明,富铝片岩-片麻岩类的原岩为泥岩和砂岩,主量和微... 详细信息

最近在兴安、额尔古纳地块均发现原岩为中基性-中酸性火山岩、陆源碎屑沉积岩及碳酸盐岩组合组成的孔兹岩系,岩石组合主要分为富铝片岩-片麻岩类和斜长角闪岩两类。岩石地球化学特征表明,富铝片岩-片麻岩类的原岩为泥岩和砂岩,主量和微量元素的分配形式接近澳大利亚后太古宙页岩(PAAS)和北美页岩(NASC),稀土元素的分布特征与NASC相似,显示轻稀土元素富集及eu负异常,(La/Yb)N=4～17,δeu=0.32～0.79。其Cr/Ti(0.01～0.03)、Zr/Y(1.2～13.3)、Cr/Th(0.1～8.63)、Cr/Zr(0.02～0.47)、Th/U(1.5～7.7)、CIW(68～99)表明物源区以花岗岩类为主,并可能含有碎屑沉积岩。其ceanom(-0.04～-0.01)、ce/ce#(0.90～1.30)表明富铝片岩-片麻岩类原岩沉积环境为亚稳定的大陆边缘沉积。斜长角闪岩原岩为玄武岩或安山质玄武岩,其富Fe2O3(1.83%～12.37%)、MgO(4.28%～7.29%)、贫SiO2(47.06%～56.13%),呈低碱性。轻稀土元素相对富集,MORB标准化的微量元素配分型式为大隆起型,Zr/Nb、Hf/Th值均类似于板内拉斑玄武岩的特征。因此,研究区孔兹岩系应形成于裂谷沉积背景。这与佳木斯地块麻山群孔兹岩系形成环境一致,表明东北地区各地块的变质基底均为孔兹岩系,其原岩均形成于裂谷沉积环境,并统一经历～500Ma泛非期变质事件,这为研究我国前寒武纪的大陆演化、再造我国东北地区的构造格局及其在Gondwana大陆重建中的位置都将具有重大的理论意义。

关键词：孔兹岩系泛非期地球化学原岩特征沉积背景中国东北