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A General Framework for Intelligent IoT Data Acquisition and Sharing in an Untrusted Environment Based on Blockchain

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China Communications 2024年第3期21卷 137-148页

作者： lu Yin Xue Yongtao Li Qingyuan Wu luocheng Li Taosen Yang peipei Zhu Hongbo College of Internet of Things Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology(Nanjing University of Posts and Telecommunications) Ministry of EducationNanjing 210003China Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China Research Institute of Internet of Things Nanjing University of Posts and TelecommunicationsNanjing 210003China Bell Honors School Nanjing University of Posts and TelecommunicationsNanjing 210023China School of Automation Nanjing University of Posts and TelecommunicationsNanjing 210023China

Traditional Io T systems suffer from high equipment management costs and difficulty in trustworthy data sharing caused by centralization.Blockchain provides a feasible research direction to solve these problems. The main challenge at this stage is to integrate the blockchain from the resourceconstrained Io T devices and ensure the data of Io T system is credible. We provide a general framework for intelligent Io T data acquisition and sharing in an untrusted environment based on the blockchain, where gateways become Oracles. A distributed Oracle network based on Byzantine Fault Tolerant algorithm is used to provide trusted data for the blockchain to make intelligent Io T data trustworthy. An aggregation contract is deployed to collect data from various Oracle and share the credible data to all on-chain users. We also propose a gateway data aggregation scheme based on the REST API event publishing/subscribing mechanism which uses SQL to achieve flexible data aggregation. The experimental results show that the proposed scheme can alleviate the problem of limited performance of Io T equipment, make data reliable, and meet the diverse data needs on the chain.

关键词： blockchain data sharing Internet of Things Oracle

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Random Terpolymer Based on Simple Siloxane-functionalized Thiophene Unit Enabling High-performance Non-fullerene Organic Solar Cells

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Chinese Journal of Polymer Science 2024年第3期42卷 311-321,I0006页

作者： Fuliang Cheng Shiting Lai Yihan Zhang Ling Xue Xinxin Xia peipei Zhu Xinhui lu Xunfan Liao Yiwang Chen National Engineering Research Center for Carbohydrate Synthesis/Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China Department of Physics Chinese University of Hong Kong New TerritoriesHong Kong 999077China Institute of Polymers and Energy Chemistry(IPEC)/Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang UniversityNanchang 330031China

Incorporation of siloxane-functionalized units into polymers backbone has proven to be an efficient strategy to improve photovoltaic performance. In this work, a low-cost siloxane-containing unit was developed to construct a series of terpolymers, and the effects of siloxane on the polymer performance were systematically studied. Different contents of thiophene containing siloxane-functionalized side chain were introduced into PM6 to obtain a series of polymers(PM6, PM6-SiO-10, PM6-SiO-20 and PM6-SiO-30). The siloxane-functionalized side chains in polymers have only a slight effect on the absorption behavior and frontier molecular orbitals. However, when the siloxane content increased, the terpolymers' aggregation property decreased and the temperature-dependency increased, leading to improved donor-acceptor compatibility. The power conversion efficiency(PCE) based on PM6:Y6, PM6-SiO-20:Y6 and PM6-SiO-30:Y6 devices was 15.64%, 16.03% and 15.82%, respectively. In comparison, the active layer based on PM6-SiO-10:Y6 exhibits the most appropriate phase separation morphology, resulting in effective exciton dissociation, more balanced hole-electron transport and less recombination. Consequently, the highest PCE of 16.69% with an outstanding shortcircuit current density of 26.96 mA·cm^(-2) was obtained, which are one of the highest values for siloxane-functionalized polymer-based devices.This work demonstrates that finely controlling the content of siloxane-functionalized thiophene is beneficial for obtaining high-performance terpolymer donors and provides a novel and low-cost method to improve photovoltaic performance.

关键词： Organic solar cells Terpolymers Siloxane-functionalized unit Low-cost Morphology

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Atypical functions of xenobiotic receptors in lipid and glucose metabolism

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Medical Review 2022年第6期2卷 611-624页

作者： Jingyuan Wang peipei lu Wen Xie Center for Pharmacogenetics and Department of Pharmaceutical Sciences University of PittsburghPittsburghPAUSA Center for Pharmacogenetics and Department of Pharmaceutical Sciences University of PittsburghPittsburghPA 15261USA Department of Pharmacology and Chemical Biology University of PittsburghPittsburghPA 15261USA

Xenobiotic receptors are traditionally defined as xenobiotic chemical-sensing receptors,the activation of which transcriptionally regulates the expression of enzymes and transporters involved in the metabolism and disposition of xenobiotics.Emerging evidence suggests that“xenobiotic receptors”also have diverse endobiotic functions,including their effects on lipid metabolism and energy metabolism.Dyslipidemia is a major risk factor for cardiovascular disease,diabetes,obesity,metabolic syndrome,stroke,nonalcoholic fatty liver disease(NAFLD),and nonalcoholic steatohepatitis(NASH).Understanding the molecular mechanism by which transcriptional factors,including the xenobiotic receptors,regulate lipid homeostasis will help to develop preventive and therapeutic approaches.This review describes recent advances in our understanding the atypical roles of three xenobiotic receptors:aryl hydrocarbon receptor(AhR),pregnane X receptor(PXR),and constitutive androstane receptor(CAR),in metabolic disorders,with a particular focus on their effects on lipid and glucose metabolism.Collectively,the literatures suggest the potential values of AhR,PXR and CAR as therapeutic targets for the treatment of NAFLD,NASH,obesity and diabetes,and cardiovascular diseases.

关键词： aryl hydrocarbon receptor constitutive androstane receptor lipid metabolism pregnane X receptor xenobiotic receptors

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Synergistic effects of carbon cycle metabolism and photosynthesis in Chinese cabbage under salt stress

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Horticultural Plant Journal 2024年第2期10卷 461-472页

作者： Hao Liang Qiling Shi Xing Li peipei Gao Daling Feng Xiaomeng Zhang Yin lu Jingsen Yan Shuxing Shen Jianjun Zhao Wei Ma State Key Laboratory of North China Crop Improvement and Regulation Key Laboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiCollege of HorticultureHebei Agricultural UniversityBaodingHebei 071000China

Chinese cabbage(Brassica rapa ssp. pekinensis) has a long cultivation history and is one of the vegetable crops with the largest cultivation area in China. However, salt stress severely damages photosynthesis and hormone metabolism, nutritional balances, and results in ion toxicity in plants. To better understand the mechanisms of salt-induced growth inhibition in Chinese cabbage, RNA-seq and physiological index determination were conducted to explore the impacts of salt stress on carbon cycle metabolism and photosynthesis in Chinese cabbage. Here, we found that the number of thylakoids and grana lamellae and the content of starch granules and chlorophyll in the leaves of Chinese cabbage under salt stress showed a time-dependent response, first increasing and then decreasing. Chinese cabbage increased the transcript levels of genes related to the photosynthetic apparatus and carbon metabolism under salt stress, probably in an attempt to alleviate damage to the photosynthetic system and enhance CO_(2) fixation and energy metabolism. The transcription of genes related to starch and sucrose synthesis and degradation were also enhanced;this might have been an attempt to maintain intracellular osmotic pressure by increasing soluble sugar concentrations. Soluble sugars could also be used as potential reactive oxygen species(ROS) scavengers, in concert with peroxidase(POD)enzymes, to eliminate ROS that accumulate during metabolic processes. Our study characterizes the synergistic response network of carbon metabolism and photosynthesis under salt stress.

关键词： Chinese cabbage Salt stress Carbon metabolism Photosynthesis Chloroplast

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Visible-light-promoted oxidative decarboxylation of arylacetic acids in air:Metal-free synthesis of aldehydes and ketones at room temperature

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Chinese Chemical Letters 2020年第7期31卷 1863-1867页

作者： Shuaiqi He Xiaolan Chen Fanlin Zeng peipei lu Yuyu Peng Lingbo Qu Bing Yu College of Chemistry Zhengzhou UniversityZhengzhou 450001 China Henan Nonferrous Metals Geological Exploration Institute Zhengzhou 450052China Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114China

A metal-free photocatalytic oxidative decarboxylation reaction at room temperature was developed for the synthesis of aromatic aldehydes and ketones from the corresponding arylacetic acids.The reaction was realized under blue-light irradiation by adding 1 mol%of 4 CzIPN as photocatalyst and air as oxidant.This reaction represents a novel decarboxylation of a sp^3-hybridized carboxylic acids without traditional heating,additional oxidants,and metal reagents under mild conditions.

关键词： Decarboxylation Metal-free Photocatalysis 4CzIPN Arylacetic acids

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铝合金直读光谱NADCAP认证审核中的常见技术问题

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理化检验（化学分册） 2024年第4期60卷 423-426页

作者：陆科呈顾沛沛莫灼强广西南南铝加工有限公司南宁530031 广西铝合金材料与加工重点实验室南宁530031

AC7101/2[1]是国家航空航天和国防合同方授信项目(NADCAP)材料测试实验室化学分析的审核标准,是AC7101/1[2]的补充。AC7101/2最新版本为2020年7月8日发布的EΔ1版,从2020年8月30日起使用,该版本与2014年修订的D版有较大区别,比如将“化... 详细信息

AC7101/2[1]是国家航空航天和国防合同方授信项目(NADCAP)材料测试实验室化学分析的审核标准,是AC7101/1[2]的补充。AC7101/2最新版本为2020年7月8日发布的EΔ1版,从2020年8月30日起使用,该版本与2014年修订的D版有较大区别,比如将“化学实验室能力矩阵”改为“化学定量分析范围”,增加了实验室自制参考物质和波长的选择与验证等内容。

关键词：化学实验室化学定量分析测试实验室参考物质审核标准常见技术问题直读光谱能力矩阵

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相互作用的情感与原因子句提取模型

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计算机应用与软件 2024年第6期41卷 200-207页

作者：陆丁天张志远刘佩佩于得水中国民航大学计算机科学与技术学院天津300300 中国民航大学校报编辑部天津300300 中国民航大学科技创新研究院天津300300

无情感标注的原因提取获得较多关注。由于情感与原因是相互影响的,基于此,提出相互作用的情感与原因子句提取模型,加入相互作用的注意力矩阵提取情感与原因之间的关联性,进而提高情感子句与原因子句的提取效果。实验结果表明相互作用的... 详细信息

无情感标注的原因提取获得较多关注。由于情感与原因是相互影响的,基于此,提出相互作用的情感与原因子句提取模型,加入相互作用的注意力矩阵提取情感与原因之间的关联性,进而提高情感子句与原因子句的提取效果。实验结果表明相互作用的注意力矩阵能显著提高模型效果。

关键词：情感子句原因子句情感分析注意力相互作用矩阵

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基于四核铜簇单元构筑的配位聚合物及光催化降解性能

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人工晶体学报 2024年第2期53卷 315-321页

作者：潘会宾吴婷婷葛婧黄沛沛拓梦琪卢久富商洛职业技术学院公共课教学部商洛726000 陕西理工大学化学与环境科学学院催化基础与应用重点实验室汉中723001 西安汇创贵金属新材料研究院有限公司西安710000

以1,3-双咪唑基丙烷(1,3-BIP)、1,3,5-苯三甲酸(H_(3)BTC)和Cu(NO_(3))_(2)·3H_(2)O为原料,在溶剂热条件下合成了Cu(II)配位聚合物[Cu_(2)(μ_(3)-OH)(1,3-BIP)(BTC)]_(n)(SNUT-20),并用元素分析、热重分析、红外光谱、单晶X射线衍射等表征手段对配位聚合物进行了表征。单晶X射线衍射解析结果表明,配位聚合物SNUT-20是一个以四核铜簇作为次级结构单元,通过混合配体的进一步连接,形成一个3,8双节点的拓扑结构。此外,配位聚合物SNUT-20对罗丹明B(RhB)、亚甲基蓝(MB)和甲基橙(MO)表现出良好的光催化降解性能,对RhB、MB、MO的降解率分别达到了81.5%、89.4%和48.3%。

关键词： Cu(Ⅱ)配位聚合物晶体结构热重分析光催化降解

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超声斜轴平面引导技术在PICC穿刺术中的应用研究

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中华护理杂志 2024年第4期59卷 389-394页

作者：项小燕朱薇钦晓英黄培培卢琪张烨崔智萍浙江省人民医院/杭州医学院附属人民医院静脉治疗护理杭州市310014 浙江省人民医院/杭州医学院附属人民医院护理部杭州市310014

目的探讨超声斜轴平面引导技术在PICC穿刺术中的应用效果及安全性,以期为临床应用提供指导和借鉴。方法通过便利抽样,选择浙江省某三级甲等医院2022年3月—12月的654例患者作为研究对象。通过Excel表函数产生随机数进行随机分组,分为A、... 详细信息

目的探讨超声斜轴平面引导技术在PICC穿刺术中的应用效果及安全性,以期为临床应用提供指导和借鉴。方法通过便利抽样,选择浙江省某三级甲等医院2022年3月—12月的654例患者作为研究对象。通过Excel表函数产生随机数进行随机分组,分为A、B、C 3组,分别采用超声短轴平面、长轴平面、斜轴平面引导PICC穿刺置管。记录并比较3组置管过程中PICC一次穿刺成功率、穿刺针皮下调整次数、穿刺时间以及穿刺并发症(血肿、穿破血管后壁、误伤动脉、误伤神经等)的发生情况。结果共654例患者完成了该研究,A组215例,B组219例,C组220例。C组的一次穿刺成功率为86.36%,高于A组的73.95%和B组的63.93%,3组比较差异具有统计学意义(P0.017)。3组在误伤神经和穿破血管后壁等并发症方面比较,具有统计学意义(P0.005)。结论超声斜轴平面引导PICC穿刺的一次穿刺成功率高于短轴平面引导和长轴平面引导,其穿刺并发症发生率低于短轴平面引导和长轴平面引导,建议PICC置管时使用超声斜轴平面引导穿刺。

关键词：超声引导斜轴平面经外周静脉置入中心静脉导管护理

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GA3处理对盐胁迫下5种牧草种子萌发及幼苗生长的影响

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草业科学 2024年第1期41卷 89-98页

作者：崔文宁孟静静张文香路培高培培王茜张存在衡水学院生命科学学院河北衡水053000 河北省武邑县自然资源和规划局河北衡水053400

盐胁迫是限制种子萌发和幼苗生长的关键因子,适宜浓度的赤霉素(GA3)可有效缓解盐胁迫对种子造成的不利影响。为了解GA3对盐胁迫下牧草种子萌发和生长的缓解效应,筛选出促进盐胁迫下5种牧草种子萌发和幼苗生长的最佳GA3浓度,本研究以100 ... 详细信息

盐胁迫是限制种子萌发和幼苗生长的关键因子,适宜浓度的赤霉素(GA3)可有效缓解盐胁迫对种子造成的不利影响。为了解GA3对盐胁迫下牧草种子萌发和生长的缓解效应,筛选出促进盐胁迫下5种牧草种子萌发和幼苗生长的最佳GA3浓度,本研究以100 mmol·L^(-1)的NaCl溶液模拟盐胁迫,以黑麦草(Lolium perenne)、‘朝牧1号’稗谷(Echinochloa crusgalli‘Chaomu1’)、羊草(Leymus chinensis)、紫花苜蓿(Medicago sativa)、白三叶(Trifolium repens)5种牧草种子为试材,选取不同浓度GA3进行浸种处理,测定其发芽率、发芽指数、根长、苗高、鲜重等指标。结果表明:GA3浸种可有效缓解盐胁迫对5种牧草种子萌发和幼苗生长造成的抑制作用,且不同浓度间作用差异显著(P<0.05)。150 mg·L^(-1)的GA3能有效促进黑麦草、羊草、紫花苜蓿和白三叶种子的萌发和幼苗生长;100 mg·L^(-1)的GA3能有效促进‘朝牧1号’稗谷的种子萌发,50 mg·L^(-1)的GA3能显著促进其种苗的生长。本研究结果对盐胁迫逆境下的牧草种植及土壤改良具有参考价值。

关键词：赤霉素盐胁迫牧草种子萌发生长特性

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