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另一种“资本下乡”——电商资本嵌入乡村社会的过程与机制

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中国农村经济 2020年第12期 35-55页

作者：周浪华中科技大学马克思主义学院

通过访谈、参与观察等方法,本文对两个淘宝镇电商产业发展过程中的资本下乡现象开展田野调查。本文发现,和传统资本下乡不同,独特的互联网经济使得农村电商产业链中产品供应、快递物流、店铺运营等环节的资本下乡呈现出另一种姿态。其中... 详细信息

通过访谈、参与观察等方法,本文对两个淘宝镇电商产业发展过程中的资本下乡现象开展田野调查。本文发现,和传统资本下乡不同,独特的互联网经济使得农村电商产业链中产品供应、快递物流、店铺运营等环节的资本下乡呈现出另一种姿态。其中,市场驱动而非政策推动构成了电商资本下乡的内生动力,从事电商运营的农户因掌握以“流量”为核心的稀缺性资源而具有市场主体地位和市场能力优势,“强农户—弱资本”的市场关系形态导致电商资本谋求支配地位失效并转向寻求依附的市场实践。在此基础上,本文认为,电商资本给乡村带来了增权赋能式的社会影响,促进了个体、家庭以及村镇的向好发展。

关键词：农村电子商务资本下乡市场驱动市场依附增权赋能

Impact of the spindle number on the material transport and mixing during planetary roller melt granulation Author links open overlay panel

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Particuology 2024年第8期91卷 260-267页

作者： Tom lang Jens Bartsch Laboratory of Solids Process Engineering Department of Biochemical and Chemical EngineeringTU Dortmund University44227DortmundGermany

In comparison to the established twin-screw machines,the application of a planetary roller granulator for continuous operation of melt granulation is a promising alternative based on the unique process *** initial study focused on the material transport during processing as a key driver for the overall ***,the impact of direct process parameters on the residence time distribution was the main *** investigations are complemented in this study by considering the free processing volume,which is defined by the number of planetary spindles applied within a *** impact on the processing conditions is evaluated with respect to the process setting in terms of feed rate and rotation *** results highlight the potential of altering the underlying transport function in planetary roller melt granulation(PRMG)via the investigated direct process and equipment *** impact of the feed rate is lower in comparison,while a higher rotation speed as well as a higher free processing volume promote material ***,a normalization of the determined residence time distribution(RTD)model data was feasible with respect to the process settings and the number of applied planetary spindles in the processing *** demonstrates the key role of the free processing volume in the fundamental mechanisms of material transport and mixing during PRMG.

关键词： Continuous manufacturing Melt granulation Planetaryroller granulator Quality-by-Design Residence time Material mixing

MicrobiotaProcess:A comprehensive R package for deep mining microbiome

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The Innovation 2023年第2期4卷 48-58,47页

作者： Shuangbin Xu Li Zhan Wenli Tang Qianwen Wang Zehan Dai lang zhou Tingze Feng Meijun Chen Tianzhi Wu Erqiang Hu Guangchuang Yu Division of Laboratory Medicine Microbiome Medicine CenterZhujiang HospitalSouthern Medical UniversityGuangzhou 510515China Department of Bioinformatics School of Basic Medical SciencesSouthern Medical UniversityGuangzhou 510515China

The data output from microbiome research is growing at an accelerating rate,yet mining the data quickly and efficiently remains *** is still a lack of an effective data structure to represent and manage data,as well as flexible and composable analysis *** response to these two issues,we designed and developed the MicrobiotaProcess *** provides a comprehensive data structure,MPSE,to better integrate the primary and intermediate data,which improves the integration and exploration of the downstream *** this data structure,the downstream analysis tasks are decomposed and a set of functions are designed under a tidy *** functions independently perform simple tasks and can be combined to perform complex tasks.

关键词： methods. structure integrate

Al2O3负载ZnO催化臭氧氧化处理造纸废水的研究

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中国造纸学报 2020年第3期35卷 65-69页

作者：周浪重庆工程职业技术学院重庆402260

将ZnO负载在Al2O3上,制备用于催化臭氧降解造纸废水中有机物的催化剂(Al2O3@ZnO);采用场发射扫描电子显微镜(SEM)和X射线衍射仪(XRD)对Al2O3@ZnO催化剂进行物相分析;研究了造纸废水的初始pH值、反应时间和催化剂用量对Al2O3@ZnO催化臭... 详细信息

将ZnO负载在Al2O3上,制备用于催化臭氧降解造纸废水中有机物的催化剂(Al2O3@ZnO);采用场发射扫描电子显微镜(SEM)和X射线衍射仪(XRD)对Al2O3@ZnO催化剂进行物相分析;研究了造纸废水的初始pH值、反应时间和催化剂用量对Al2O3@ZnO催化臭氧氧化处理造纸废水效果的影响;并进行了自由基捕集剂叔丁醇实验,以探讨降解造纸废水中有机物的主要因素。结果表明,本研究成功制备了具有良好催化性能的Al2O3@ZnO催化剂;在造纸废水初始pH值为11、催化剂用量为2.0 g/L、反应时间为60 min的条件下,Al2O3@ZnO催化剂对造纸废水中CODCr的去除率可达到84.6%,与单独使用臭氧氧化方法相比,CODCr去除率明显提高,且CODCr的动力学降解反应遵循准一级动力学方程;叔丁醇的实验结果表明,在Al2O3@ZnO催化臭氧氧化处理造纸废水有机物的过程中,羟基自由基是降解废水有机物的主要因素。

关键词：催化臭氧造纸废水 Al2O3@ZnO催化剂

银纳米杆中原子能量分布特征的分子动力学研究

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北京化工大学学报（自然科学版） 2008年第1期35卷 33-37页

作者：卢敏周耐根周浪江西理工大学理学院江西赣州341000 南昌大学材料科学与工程学院江西南昌330047

采用分子动力学方法和嵌入原子法(EAM)多体势函数,模拟研究了银纳米杆能量分布特征在不同温度直到熔化过程中的变化。结果显示:纳米杆中原子的势能分布曲线呈现多个分立的峰;随着温度的变化,分布曲线各个峰的位置保持不变,但峰高和峰宽... 详细信息

采用分子动力学方法和嵌入原子法(EAM)多体势函数,模拟研究了银纳米杆能量分布特征在不同温度直到熔化过程中的变化。结果显示:纳米杆中原子的势能分布曲线呈现多个分立的峰;随着温度的变化,分布曲线各个峰的位置保持不变,但峰高和峰宽明显变化;纳米杆熔化后这种能量分布特征完全消失,只有一个宽化的峰。模拟结果分析表明:纳米杆中原子势能分布曲线中每个峰对应于一定的最近邻原子数,纳米杆中每个原子的势能所处峰位由其最近邻原子数决定,偏离峰值程度则由其次近邻原子数决定。

关键词：银纳米杆分子动力学能量分布

Antioxidant and anti-inflammatory injectable hydrogel microspheres for in situ treatment of tendinopathy

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Regenerative Biomaterials 2024年第3期3卷 92-104页

作者： Qibin Han lang Bai Yinhua Qian Xiaoyu Zhang Juan Wang Jing zhou Wenguo Cui Yuefeng Hao Xing Yang Department of Orthopedics The Affliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical University Suzhou215008P.R.China Department of Orthopedics Kunshan Hospital of Traditional Chinese MedicineSuzhou 215300P.R.China Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025P.R.China

Tendinopathy is a common disorder that causes local dysfunction and reduces quality of *** research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of ***,injectable methacrylate gelatin(GelMA)microspheres(GM)were fabricated and loaded with heparin-dopamine conjugate(HDC)and hepatocyte growth factor(HGF).GM@HDC@HGF were designed to balance the inflammatory microenvironment by inhibiting oxidative stress and inflammation,thereby regulating extracellular matrix(ECM)metabolism and halting tendon *** growth factors with heparin was expected to improve the encaption,the catechol groups on dopamine have adhesion and antioxidant properties,allowing potential attachment at the injured site,and better function synergized with ***@HDC@HGF injected in situ in rat Achilles tendinopathy(AT)models significantly downregulated oxidative stress and inflammation,and ameliorated ECM *** conclusion,the multifunctional platform developed presents a promising alternative for the treatment of tendinopathy.

关键词： tendinopathy oxidative stress inflammation microspheres

Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost

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Chinese Physics B 2018年第3期27卷 520-525页

作者： Haibin Huang Gangyu Tian lang zhou Jiren Yuan Wolfgang R.Fahrner Wenbin Zhang Xingbing Li Wenhao Chen Renzhong Liu Institute of Photovoltaics Nanchang UniversityNanchang 330031China Department of Physics Nanchang UniversityNanchang 330031China GCL System Integration Technology Co.Ltd. Shanghai 201700China Hareon Solar Co.Ltd. Taicang 215400China

A novel structure of Ag gridlSiN_(x)/n+-c-Si/n-c-Si/i-a-Si:H/p^(+)-a-Si:HlTCO/Ag grid was designed to increase the ef-ficiency of bifacial amorphous/crystalline silicon-based solar cells and reduce the rear material consumption and production *** simulation results show that the new structure obtains higher efficiency compared with the typical bifa-cial amorphous/crystalline silicon-based solar cell because of an increase in the short-circuit current(J_(sc)),while retaining the advantages of a high open-circuit voltage,low temperature coefficient,and good weak-light ***,real cells composed of the novel structure with dimensions of 75 mm×75 mm were fabricated by a special fabrication recipe based on industrial *** parameter optimization,the cell efficiency reached 21.1%with the J_(sc)of 41.7 mA/cm^(2).In addition,the novel structure attained 28.55%potential conversion efficiency under an illumination of AM 1.5 G,100 mW/cm^(2).We conclude that the configuration of the Ag grid/SiN_(x)/n^(+)-c-Si/n-c-Si/i-a-Si:H/p^(+)-a-Si:H/TCO/Ag grid is a promising structure for high efficiency and low cost.

关键词： silicon solar cell a-Si:H/c-Si heterojunction short-circuit current

Interface states study of intrinsic amorphous silicon for crystalline silicon surface passivation in HIT solar cell

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Chinese Physics B 2017年第4期26卷 489-493页

作者：肖友鹏魏秀琴周浪 Institute of Photovoltaic/School of Materials Science and Engineering Nanchang UniversityNanchang 330031China

Intrinsic hydrogenated amorphous silicon（a-Si：H） film is deposited on n-type crystalline silicon（c-Si） wafer by hotwire chemical vapor deposition（HWCVD） to analyze the amorphous/crystalline heterointerface passivation *** minority carrier lifetime of symmetric heterostructure is measured by using Sinton Consulting WCT-120 lifetime tester system,and a simple method of determining the interface state density（D_（it）） from lifetime measurement is *** interface state density（D_（it）） measurement is also performed by using deep-level transient spectroscopy（DLTS） to prove the validity of the simple *** microstructures and hydrogen bonding configurations of a-Si：H films with different hydrogen dilutions are investigated by using spectroscopic ellipsometry（SE） and Fourier transform infrared spectroscopy（FTIR） *** values of interface state density（D_（it）） are obtained by using a-Si：H film with more uniform,compact microstructures and fewer bulk defects on crystalline silicon deposited by HWCVD.

关键词： amorphous silicon microstructure hydrogen bonding configurations interface state density

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一种冲击波作用下结构毁伤算法研究

爆炸与冲击 2022年第10期42卷 97-108页

作者：周朗徐春光中山大学航空航天学院广东深圳518107

针对爆炸冲击波与建筑物结构相互作用过程,分析了冲击波与结构碎块作用机理,发展了一种能够模拟建筑物结构破坏及冲击波传播过程的计算模型和方法。采用建筑物结构工程毁伤载荷作为判据,处理结构在冲击波作用下的破坏问题;利用流固耦合... 详细信息

针对爆炸冲击波与建筑物结构相互作用过程,分析了冲击波与结构碎块作用机理,发展了一种能够模拟建筑物结构破坏及冲击波传播过程的计算模型和方法。采用建筑物结构工程毁伤载荷作为判据,处理结构在冲击波作用下的破坏问题;利用流固耦合界面算法处理结构运动引起的泄压效应,利用“虚拟网格通气技术”处理结构碎块对冲击波的阻碍作用,模拟了冲击波作用下典型建筑物的毁伤过程及冲击波传播过程。结果表明,该模型在模拟冲击波与结构的作用过程中,压力计算结果与非结构动网格模拟结果符合较好;在典型建筑物毁伤过程的数值模拟中,计算得到的建筑物毁伤效果和冲击波超压分布与建筑物物理毁伤特点符合。

关键词：流固耦合毁伤效应冲击波任意拉格朗日-欧拉方法