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Microwave-assisted pyrolysis of waste plastics for their resource reuse:A technical review

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Carbon Resources Conversion 2023年第3期6卷 215-228页

作者： Xuan Hu Dachao Ma Guangyi Zhang Mengxue Ling Qiaoling Hu Kangyi Liang jiacheng lu Yifan Zheng School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China Key Laboratory of Environmental Protection Guangxi UniversityNanning 530004China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Rapidly increasing plastics have been used and finally become wastes,resulting in increasing pressures to the ***-assisted pyrolysis is a promising technology for converting organic wastes as waste plastics into value-added *** present,many works on microwave-assisted pyrolysis of plastics have been published,but the achievements,challenges,and future directions of microwave-assisted pyrolysis of waste plastics have not been well summarized and *** this work,the principle of microwave-assisted pyrolysis technology is ***,the progress of its application to recover useful products from plastics is reviewed and discussed in terms of key parameters including microwave power,pyrolysis temperature,reaction time,types of catalyst,microwave absorbents and feedstock mixing ***,the yields and properties of the produced oil,gas and char are correlated with the process ***,the existing challenges and prospects of disposal/reuse of waste plastics by microwave-assisted pyrolysis technology are discussed.

关键词： Review Waste plastics Microwave-assisted pyrolysis Challenges

ANO1 regulates cell cycle of pulmonary artery smooth muscle cell in high-flow induced pulmonary arterial hypertension

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ANO1 regulates cell cycle of pulmonary artery smooth muscle ...

Microarray Analysis of Differential Gene Expression Profile between Human Fetal and Adult Heart

2019年浙江省医学会儿科学分会学术大会

作者： Kai Wang Aihua Zhou Miaohua Ruan Zengyou Jin jiacheng lu Chaosheng lu The First Affiliated Hospital of Wenzhou Medical University

In order to investigate the regulation of ANO1 to cell cycle of pulmonary artery smooth muscle cell(PASMC) in high pulmonary blood flow induced pulmonary arterial hypertension(PAH). Thirty Sprague-Dawley(SD) rats were randomly assigned to control, sham and shunt groups. A rat model of high pulmonary blood flows induced PAH was established by abdominal aorta-inferior vena cava fistulization operation. Right ventricular pressure(RVP), right ventricular hypertrophy index(RVHI), and pulmonary arteriole structural remodeling were tested 12 weeks post operation. The cell cycle of PASMC was detected by flow cytometry. Expressions of cyclin D1, CDK2, p27KIP, cyclin E of PASMC were measured by western blot. Compared with control and sham groups, expression of cyclin E and cyclin D1 increased, accompanied with the increased expression of ANO1 in shunt group. In vitro study, expression of cyclin E and cyclin D1 were abolished in PASMC after ANO1 knock down, along with impaired proliferation of PASMC. In conclusion, ANO1 may contribute to PASMC cycle regulation in high pulmonary blood flow induced PAH via regulating cell cycle of PASMC.

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Microarray Analysis of Differential Gene Expression Profile ...

RIS辅助MIMO NOMA系统中利用统计CSI的下行传输方法

第十三届江浙沪儿科学术会议暨2016年浙江省医学会儿科学学术年会

作者： Jue Wang Zhimin Geng Lianhong Jia jiacheng lu Xueli Cai Maoping Chu Department of Cardiac Surgery the First Affiliated Hospital of Wenzhou Medical University Children's Heart Center the Second Affiliated Hospital & Yuying Children's HospitalInstitute of Cardiovascular Development and Translational MedicineWenzhou Medical University Department of Pediatrics the First Affiliated Hospital of Wenzhou Medical University Department of Cardiology the First Affiliated Hospital of Wenzhou Medical University

Objectives:Although many significant physiological changes have been discovered during the maturation process of the heart,the genetic mechanisms involved in the changes between immature and mature myocardium have only been partially ***,high-throughput microarray screening and improved bioinformatics were used to characterize the gene expression profile changed between the human fetal and adult ***:An Arraystar Human Microarray was applied to define gene expression signatures of the fetal hearts(13-17 weeks of gestation,n = 4) and normal adult hearts(30-40 years old,n = 4).Gene ontology analysis,pathway analysis,gene set enrichment analyses and signal transduction network were performed to predict the function of the differentially expressed *** differentially expressed mRNAs were selected and confirmed by quantificational real-time polymerase chain reaction(qRT-PCR).Results:A total of 5547 coding RNAs were found to be significantly differentially expressed(fold change ≥ 2.0,P < 0.05 and false discovery rate < 0.05) between fetal and adult hearts,among which 3,220 mRNAs were downregulated and 2,327 were up-regulated in the adult group compared with the fetal *** ontology analysis revealed that the down-regulated genes were mainly involved in "cell cycle".KEGG pathway analysis and gene set enrichment analyses identified that "cell cycle pathway" was the most enriched pathway involved in the downregulated *** signal transduction network suggested that epidermal growth factor receptor(EFGR) and insulin-like growth factor 1 receptor(IGF1 R) play a central role in the regulation of heart ***,IGF1 R and fibroblast growth factor receptor 2(FGFR2) were identified to be the core genes in the signal transduction network related to cell *** qRT-PCR Results suggested that the expression tendency was concordant with the microarray ***:Taken together,our data identified the transcriptional regul

关键词： Microarray Bioinformatics Human Fetal Adult Heart

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电子与信息学报 2024年第4期46卷 1257-1265页

作者：陆佳程王斌张军倪艺洋南京邮电大学通信与信息工程学院南京210003 江苏第二师范学院物理与信息工程学院南京210013

针对可重构智能反射表面(RIS)辅助多输入多输出(MIMO)非正交多址接入(NOMA)下行传输系统,该文提出利用统计信道状态信息(CSI)的基站发送协方差矩阵与RIS相移矩阵设计方法。首先,在莱斯空间相关信道假设下,利用大维随机矩阵理论,推导了RI... 详细信息

针对可重构智能反射表面(RIS)辅助多输入多输出(MIMO)非正交多址接入(NOMA)下行传输系统,该文提出利用统计信道状态信息(CSI)的基站发送协方差矩阵与RIS相移矩阵设计方法。首先,在莱斯空间相关信道假设下,利用大维随机矩阵理论,推导了RIS辅助MIMO NOMA系统遍历和速率的确定性表达式;然后,在弱用户速率约束与发送功率受限的条件下,通过最大化确定性大系统近似和速率,利用统计CSI,分别设计了强、弱用户的次优发送协方差矩阵和RIS的相移矩阵。仿真结果表明,所推导的近似表达式具有很好的近似效果,所设计的发送协方差矩阵和相移矩阵能显著提升系统的和速率。

关键词：统计信道状态信息非正交多址接入可重构智能反射表面发送协方差大维随机矩阵理论

超大规模MIMO系统中基于交叠可视区域的功率分配方法

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电子与信息学报 2023年第12期45卷 4262-4270页

作者：张军陆佳程刘同顺张琦蔡曙南京邮电大学通信与信息工程学院南京210003

该文解决了超大规模多输入多输出(MIMO)系统中不同用户的可视区域(VR)存在相互交叠时的下行功率分配问题。考虑单个基站服务多个单天线用户的超大规模MIMO通信场景,由于基站配备的阵列较大,各个用户受障碍物遮挡仅能与基站部分天线进行... 详细信息

该文解决了超大规模多输入多输出(MIMO)系统中不同用户的可视区域(VR)存在相互交叠时的下行功率分配问题。考虑单个基站服务多个单天线用户的超大规模MIMO通信场景,由于基站配备的阵列较大,各个用户受障碍物遮挡仅能与基站部分天线进行通信,这部分天线即为各用户的可视区域。该文考虑不同用户的可视区域分布两两交叠,并依此划分子阵,并在各子阵上进行规则化迫零预编码以降低复杂度。接着基于大维随机矩阵理论,推导了系统下行遍历和速率的确定性近似表达式。然后,通过最大化该表达式,给出了基于统计信道状态信息的最优用户功率分配方法的闭式解。最后,仿真结果表明,和速率近似表达式的精度很高,所提功率分配方法能有效提高系统性能。

关键词：超大规模MIMO 可视区域功率分配方法大维随机矩阵理论

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带扩口折叠翼尖的大展弦比机翼气动弹性研究

西北工业大学学报 2024年第2期42卷 241-250页

作者：叶博杨佑绪卢嘉成余灵富成志勇南昌航空大学飞行器工程学院江西南昌330063 陆军装备部驻南京地区第三军事代表室江苏南京210000

扩口折叠翼尖依靠结构的自适应变形来降低飞行载荷,能有效简化控制系统,在成本和质量上更有优势。为研究弹性折叠翼尖作为被动载荷减缓装置的效果,使用铰链将翼尖连接到机翼并赋予一定弹性,对不同的折叠翼尖参数构型进行了静、动载荷响... 详细信息

扩口折叠翼尖依靠结构的自适应变形来降低飞行载荷,能有效简化控制系统,在成本和质量上更有优势。为研究弹性折叠翼尖作为被动载荷减缓装置的效果,使用铰链将翼尖连接到机翼并赋予一定弹性,对不同的折叠翼尖参数构型进行了静、动载荷响应以及颤振分析,研究了铰链方向、刚度、翼尖质量与翼尖重心位置对载荷响应与颤振特性的影响。结果表明,扩口折叠翼尖在合适的参数下能够显著降低机翼的静载荷与突风载荷,在静气动弹性配平分析中,折叠翼尖可以使展长增加25%而几乎不增加翼根弯矩,并使配平攻角降低了0.14°。在突风响应分析中可使最大翼根弯矩相比于固定翼尖减少近50%,仅比不带翼尖的基准模型高17%。但颤振速度有所降低,需进一步优化以改善其颤振特性。

关键词：飞行载荷突风响应折叠翼尖突风减缓颤振

A long-term follow-up study on clinical features and coronary artery outcomes of different age patients with Kawasaki disease

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A long-term follow-up study on clinical features and coronar...

第十三届江浙沪儿科学术会议暨2016年浙江省医学会儿科学学术年会

作者： Zengyou Jin Hongying Shi Huixian Qiu Niannian Huang Lianhong Jia jiacheng lu Zhimin Geng lulu Pan Rongzhou Wu Maoping Chu Department of Pediatrics the First Affiliated Hospital of Wenzhou Medical University Department of preventive medicine School of Environmental Science and Public HealthWenzhou Medical University Children's Heart Center the Second Affiliated Hospital & Yuying Children's HospitalInstitute of cardiovascular development and translational medicineWenzhou Medical University

Background:Kawasaki disease(KD) is the leading cause of the acquired heart disease in children,which predominantly affects coronary *** short-term,small sample studies suggest thatyoung infants might be susceptible to developing coronary artery lesion(CAL) than older ones,although the mechanism remains *** study was to identify the clinical features and coronary artery outcomes in a 5-years follow-up period among1135 patients of KD with different ***:The clinical features and echocardiography of coronary artery lesions of KD patients in the follow-up period were *** Cox regression analysis was used to screen out the independent risk factors for the development of coronary artery ***:During the follow-up,the rate of new developed CAL in the 60 months age *** CAL incidence in the 60 months age groups after intravenous immunoglobulin(IVIG) treatment during follow-up *** CAL recover among three age groups,who had CAL before treatment,was ***,incomplete KD,IVIG method,IVIG-nonresponse and hypoalbuminemia were also identified as independent prognostic factors for CAL development in addition to ***:This large sample,long-term follow-up study demonstrates that the KD patient younger than 12 months is a high risk population of CAL,even after *** Results remind us to pay more attention to these high risk KD patients who may need a more active therapy.

关键词： Kawasaki disease coronary artery age clinical features prognostic factor

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基于ABAQUS软件的水力压裂缝扩展研究

山西冶金 2024年第5期47卷 105-106,109页

作者：鲁家成山西焦煤山煤国际蒲县豹子沟煤业有限公司山西蒲县041200

为了解决坚硬顶板难垮难落的问题,利用数值模拟软件对水力压裂参数进行研究。通过研究杨氏模量、泊松比和水平应力差对岩石扩展的影响,发现杨氏模量越小,此时岩石的扩展裂缝宽度越大,而裂缝长度则呈现出相反的特征。泊松比越小,相应的... 详细信息

为了解决坚硬顶板难垮难落的问题,利用数值模拟软件对水力压裂参数进行研究。通过研究杨氏模量、泊松比和水平应力差对岩石扩展的影响,发现杨氏模量越小,此时岩石的扩展裂缝宽度越大,而裂缝长度则呈现出相反的特征。泊松比越小,相应的裂缝宽度越大,而对裂缝长度影响较小。水平应力差越大,裂缝的长度呈现增大的趋势,而对裂缝宽度影响较小。同时,进行三维模拟分析发现,随着压裂液的注入,岩石内部应力快速增大,当钻孔内部的应力超过岩石钻孔抗拉强度极限时,此时的岩石发生起裂,裂缝最大值宽度为5.93 mm,扩展效果较好。

关键词：坚硬顶板数值模拟杨氏模量水力压裂裂缝扩展

中等强度体操运动对5~6岁幼儿执行功能的影响

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中国学校卫生 2024年第3期45卷 326-329,334页

作者：张建华卢嘉程刘敏闫小凡北京体育大学艺术学院北京100084 山西大学体育学院商丘市职业教育中心

目的探讨中等强度体操运动对5~6岁幼儿执行功能发展的影响,为幼儿执行功能的运动干预提供参考依据。方法从商丘某私立幼儿园整群随机抽取3个大班63名5~6岁儿童为试验对象,根据性别分层,采用随机数字表法将幼儿分为干预组(31人)和对照组... 详细信息

目的探讨中等强度体操运动对5~6岁幼儿执行功能发展的影响,为幼儿执行功能的运动干预提供参考依据。方法从商丘某私立幼儿园整群随机抽取3个大班63名5~6岁儿童为试验对象,根据性别分层,采用随机数字表法将幼儿分为干预组(31人)和对照组(32人)。干预组进行每周3次,每次60 min,共12周的体操运动,并使用Polar H10心率带全程监控运动强度;对照组儿童在相同时间内在教室观看教育卡通片。试验前后对幼儿的抑制控制、工作记忆和认知灵活性进行评估。结果干预前两组幼儿在抑制控制、工作记忆和认知灵活性任务中的表现差异均无统计学意义(P值均>0.05)。协方差分析结果显示,干预组与对照组在抑制控制、工作记忆和认知灵活性中的反应时[(782.88±24.29,805.13±23.74;719.90±119.99,833.55±177.87;1042.39±72.75,1091.29±49.42)ms]和准确性[(73.86±7.26)%,(67.02±8.22)%;(86.36±7.63)%,(80.50±9.39)%;(76.45±9.48)%,(69.59±7.66)%]差异均有统计学意义(F值分别为6.84,4.50,4.87,6.11,3.74,5.06,P值均<0.05)。干预效果呈现小到中等效应量(d=0.17~0.74)。结论中等强度体操运动对幼儿执行功能产生了小到中等效应的提升作用。未来研究设计可引入脑成像技术,以深入探究体操运动对幼儿大脑结构和执行功能的影响机制。

关键词：体操运动活动执行功能儿童学龄前