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鱼菜共生技术及其系统装备的研究现状与展望

南京农业大学学报 2025年第1期48卷 85-96页

作者：李天沛汪小旵施印炎丁为民南京农业大学工学院江苏南京210031 江苏省现代设施农业技术与装备工程实验室江苏南京210031

中国淡水养殖产量稳居世界第一位,但过量投饲和养殖模式落后带来的水体富营养化、生产效率低下以及水产品质量无法得到保障等问题严重制约了水产养殖业的健康发展,因此发展鱼菜共生等生态种养模式是加快发展生态循环农业并最终实现农业... 详细信息

中国淡水养殖产量稳居世界第一位,但过量投饲和养殖模式落后带来的水体富营养化、生产效率低下以及水产品质量无法得到保障等问题严重制约了水产养殖业的健康发展,因此发展鱼菜共生等生态种养模式是加快发展生态循环农业并最终实现农业绿色可持续发展的重要途径。鱼菜共生技术可实现氮素和水资源的高利用率,生产农产品的同时生态效益也很显著。鱼菜共生系统包含水产养殖、养殖尾水预处理、微生物降解转化、作物栽培等农艺环节,涉及多种农业生产过程和装备。本文总结了国内外现代鱼菜共生技术的发展现状,介绍了鱼菜共生系统的装备组成和模式特点,分析了鱼菜共生技术及其装备存在的问题和挑战,提出鱼菜共生技术未来发展趋势与建议。

关键词：鱼菜共生种养装备水产养殖无土栽培尾水处理氮素循环

Interactions between a central bubble and a surrounding bubble cluster

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Theoretical & Applied Mechanics Letters 2023年第3期13卷 216-221页

作者： A-Man Zhang shi-Min li pu Cui Shuai li Yun-Long liu College of shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China Nanhai Institute of Harbin Engineering University Sanya572024China

The interaction of multiple bubbles is a complex physical problem.A simplified case of multiple bubbles is studied theoretically with a bubble located at the center of a circular bubble *** bubbles in the cluster are equally spaced and own the same initial conditions as the central *** unified theory for bubble dynamics[35]is applied to model the interaction between the central bubble and the circular bubble *** account for the effect of the propagation time of pressure waves,the emission source of the wave is obtained by interpolating the physical information on the time *** underwater explosion experiment with two bubbles of different scales is used to validate the theoretical *** effect of the bubble cluster with a variation in scale on the pulsation characteristics of the central bubble is studied.

关键词： Bubble dynamics Bubble cluster

Direct Electrochemistry Transfer and Electrocatalysis of Hemoglobin Immobilized in Porous Mn_2O_3

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Chemical Research in Chinese Universities 2011年第2期27卷 291-294页

作者： shi lin-pu GAO Qiu-ming School of Chemistry and Environment Beihang University Beijing 100191 P. R. China Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China

Novel porous Mn2O3 with good crystallinity was synthesized via hard-template method. Hb-Mn2O3 na-nocomposite was prepared and used for biosensor construction. The Hb-Mn2O3-Nafion modified electrode shows fast direct electron transfer and displays good electrocatalytic response to the reduction of H2O2. The response time is less than 5 s, the sensitivity is as high as 493 μA·L·mmol-1·cm-2 in a linear range of 1-100 μmol/L, and the detection limit is 0.16 μmol/L. This modified electrode also shows good stability and reproducibility. This indicates that the porous Mn2O3 provides a good matrix for enzyme immobilization and biosensor construction.

关键词： Porous Mn203 Biosensor Direct electrochemistry Electrocatalysis Hemoglobin

Investigation of feasibility of alkali-cosolvent flooding in heavy oil reservoirs

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Petroleum Science 2023年第3期20卷 1608-1619页

作者： Yi-Bo li He-Fei Jia Wan-Fen pu Bing Wei Shuo-shi Wang Na Yuan State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500SichuanChina Mewbourne School of Petroleum and Geological Engineering University of OklahomaNormanOK73019USA

Cold production is a challenge in the case of heavy oil because of its high viscosity and poor fluidity in reservoir ***-cosolvent-polymer flooding is a type of microemulsion flooding with low costs and possible potential for heavy oil ***,the addition of polymer may cause problems with injection in the case of highly viscous ***,in this study the feasibility of alkali-cosolvent(AC)flooding in heavy oil reservoirs was investigated via several groups of *** interfacial tension between various AC formulations and heavy crude oil was measured to select appropriate *** behavior tests were performed to determine the most appropriate formulation and conditions for the generation of a *** flooding experiments were carried out to investigate the displacement efficiency of the selected Ac *** results showed that the interfacial tension between an AC formulation and heavy oil could be reduced to below 1o-3 mN/m but differed greatly between different types of cosolvent.A butanol random polyether series displayed good performance in reducing the water-oil interfacial tension,which made it possible to form a Type Il microemulsion in reservoir *** to the results of the phase behavior tests,the optimal salinity for different formulations with four cosolvent concentrations(0.5 wt%,1 wt%,2 wt%,and 3 wt%)was 4000,8000,14000,and 20000 ppm,*** results of rheological measurements showed that Type Ill microemulsion had a viscosity that was ten times that of *** results of sandpack flooding experiments showed that,in comparison with waterflooding,the injection of a certain Ac formulation slug could reduce the injection *** pressure gradient during waterflooding and AC flooding was around 870 and 30-57 kPa/m,*** the addition of an AC slug,the displacement efficiency was 30%-50%higher than in the case of waterflooding.

关键词： Heavy oil Microemulsion Cold production Chemical flooding Displacement efficiency

Experimental investigation on the yield behavior of metal foam under shear-compression combined loading

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Science China(Technological Sciences) 2021年第7期64卷 1412-1422页

作者： LUO Geng XUE pu li YuLong School of Automobile Chang’an UniversityXi’an710064China School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China Joint International Research Laboratory of Impact Dynamics and its Engineering Applications Northwestern Polytechnical UniversityXi’an710072China

Metal foams are typically subjected to quasi-static or dynamic shear-compression combined loading in applications such as energy absorbers and structure protectors. The yield behavior of a metal foam under dynamic and quasi-static shear-compression combined loadings is investigated in this study. First, quasi-static and dynamic compression-shear combined tests at different loading angles are conducted using a universal testing machine and a rotatable Hopkinson bar system, respectively. Shear deformation reduces the plateau stress as the loading angle increases. Subsequently, the yield modes of the metal foam under combined loadings are investigated. Only one yield band occurs under a combined loading with large loading angles(mode I),whereas several yield bands occur under a combined loading with small loading angles(mode II). Finally, the yield surface plot of metal foam indicates significant enhancement in terms of normal stress and shear stress under dynamic loading. Quasi-static and dynamic phenomenological yield criteria for a shear-normal stress space are established to provide a brief and precise prediction of the behavior of metal foam under quasi-static and dynamic combined loadings.

关键词： metal foam yield behavior shear-compression combined loading yield mode yield criterion

Semi-analytical Modeling of the Influence of Macro Bending Effects on Micro Contact-Inhomogeneity Problems

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Acta Mechanica Solida Sinica 2023年第6期36卷 860-874页

作者： Jinran li linlin Sun Ning Zhao pu li School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China Key Laboratory of Road Construction Technology and Equipment of the Ministry of Education Chang’an UniversityXi’an 710064China Shaanxi Key Laboratory of Gear Transmissions Xi’an 710072China School of Science Harbin Institute of TechnologyShenzhen 518055China

This study examines the effects of macroscopic bending and microscopic contact loading in inhomogeneous materials using a semi-analytical model based on Eshelby’s equivalent inclusion *** model accounts for bending effects through the beam theory,with bending stress included in the Eshelby’s equivalent inclusion *** macroscopic displacement resulting from bending effects is incorporated into the microscopic contact solver,and the final displacement is determined using the conjugate gradient method in an iterative *** efficiency can be improved by incorporating the discrete convolution and fast Fourier *** core scheme is validated using the finite element method,yielding accurate and efficient results for bending-contact problems in inhomogeneous *** reveal the interplay between bending,contact loading,and inhomogeneity,as stress around the inhomogeneity alters and the stress concentration area expands under increasing bending ***,low-magnitude negative bending moments reduce both contact pressure and stress around the *** position where inhomogeneities are least affected shifts from the neutral surface depending on the coupling *** model provides a valuable bridge for connecting the macroscopic bending effect and microscale contact-inhomogeneity problems by visualizing stress fields and assessing pressure distributions.

关键词： Contact analysis Bending effects Inhomogeneity Equivalent inclusion method Semi-analytical model

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贲门癌病灶临床病理特点分析

沈阳医学院学报 2003年第1期5卷 17-18页

作者：张世浦李爽李宏武沈阳医学院附属第二医院普外科辽宁沈阳110002 中国医科大学第一临床学院肿瘤科

目的 :探讨贲门癌与胃远端癌病灶间临床病理特点的差异及其临床意义。方法 :收集 60例贲门癌和142例胃远端癌病例 ,对比两组病灶间主要临床病理指标的差异。结果 :贲门癌病灶的平均面积 (P <0 0 1)、大体类型、分化程度和生长方式 (P <... 详细信息

目的 :探讨贲门癌与胃远端癌病灶间临床病理特点的差异及其临床意义。方法 :收集 60例贲门癌和142例胃远端癌病例 ,对比两组病灶间主要临床病理指标的差异。结果 :贲门癌病灶的平均面积 (P <0 0 1)、大体类型、分化程度和生长方式 (P <0 0 5 )与胃远端癌存在显著差异。结论 :贲门癌病灶的临床病理特点与胃远端癌明显不同。

关键词：胃肿瘤贲门癌预后

Starvation-Sensitized and Oxygenation-Promoted Tumor Sonodynamic Therapy by a Cascade Enzymatic Approach

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Research 2021年第1期2021卷 763-779页

作者： Wencheng Wu Yinying pu Han lin Heliang Yao Jianlin shi The State Key Lab of High Performance Ceramics and Superfine Microstructures Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Medical Ultrasound Shanghai Tenth People’s HospitalUltrasound Research and Education InstituteTongji University School of MedicineShanghai 200072China Platform of Nanomedicine Translation Shanghai Tenth People’s Hospital of Tongji UniversityShanghai 200072China

The therapeutic outcomes of noninvasive sonodynamic therapy(SDT)are always compromised by tumor hypoxia,as well as inherent protective mechanisms of ***,we report a simple cascade enzymatic approach of the concurrent glucose depletion and intratumoral oxygenation for starvation-sensitized and oxygenation-amplified sonodynamic therapy using a dual enzyme and sonosensitizer-loaded nanomedicine designated as GOD/CAT@*** particular,glucose oxidase-(GOD-)catalyzed glycolysis would cut off glucose supply within the tumor,resulting in the production of tumor hydrogen peroxide(H_(2)O_(2))while causing tumor cells *** generated H_(2)O_(2)could subsequently be decomposed by catalase(CAT)to generate oxygen,which acts as reactants for the abundant singlet oxygen(^(1 O_(2))production by loaded sonosensitizer hematoporphyrin monomethyl ether(HMME)upon the US irradiation,performing largely elevated therapeutic outcomes of *** the meantime,the severe energy deprivation enabled by GOD-catalyzed glucose depletion would prevent tumor cells from executing protective mechanisms to defend themselves and make the tumor cells sensitized and succumbed to the cytotoxicity of^(1 O_(2)).Eventually,GOD/CAT@ZPF-lips demonstrate the excellent tumoral therapeutic effect of SDT in vivo without significant side effect through the cascade enzymatic starvation and oxygenation,and encouragingly,the tumor xenografts have been found completely eradicated in around 4 days by the intravenous injection of the nanomedicine without reoccurrence for as long as 20 days.

关键词： protective dynamic loaded

Anomalous enhancement oxidation of few-layer MoS_(2)and MoS_(2)/h-BN heterostructure

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Nano Research 2022年第8期15卷 7081-7090页

作者： Siming Ren Yanbin shi Chaozhi Zhang Mingjun Cui Jibin pu Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Impact and Safety Engineering Ministry of Education of ChinaSchool of Mechanical Engineering and MechanicsNingbo UniversityNingbo 315211China

Because of profound applications of two-dimensional molybdenum disulfide(MoS_(2))and its heterostructures in electronics,its thermal stability has been spurred substantial *** employ a precision muffle furnace at a series of increasing temperatures up to 340℃to study the oxidation behavior of continuous MoS_(2)films by either directly growing mono-and fewlayer MoS_(2)on SiO_(2)/Si substrate,or by mechanically transferring monolayer MoS_(2)or hexagonal boron nitride(h-BN)onto monolayer MoS_(2)*** show that monolayer MoS_(2)can withstand high temperature at 340℃with less oxidation while the few-layer MoS_(2)films are completely oxidized just at 280℃,resulting from the growth-induced tensile strain in few-layer MoS_(2).When the tensile strain of films is released by transfer method,the stacked few-layer MoS_(2)films exhibit superior thermal stability and typical layer-by-layer oxidation behavior at similarly high ***,for the MoS_(2)/h-BN heterostructure,the h-BN film itself stacked on top is not damaged and forms many bubbles at 340℃,whereas the underlying monolayer MoS_(2)film is oxidized *** comprehensively using various experimental characterization and molecular dynamics calculations,such anomalous oxidation behavior of MoS_(2)/h-BN heterostructure is mainly due to the increased tensile strain in MoS_(2)film at elevated temperature.

关键词： molybdenum disulfide hexagonal boron nitride heterostructure enhancement oxidation tensile strain