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MICROBIAL NECROMASS WITHIN AGGREGATES STABILIZES PHYSICALLY-PROTECTED C RESPONSE TO CROPLAND MANAGEMENT

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 198-209 doi: 10.15302/J-FASE-2023498

Abstract:

● The contribution of fungal necromass C to SOC increased with aggregate sizes.

Keywords: cropland management     microbial necromass     soil aggregates     soil carbon sequestration     soil organic matter    

Industrial bio-based plant aggregates as hygric and insulating construction materials for energy efficient

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1532-1532 doi: 10.1007/s11705-020-1960-7

Abstract: In this paper, the bulk density, microstructure, porosity and pore size distribution of the selected aggregatesThe scanning electron microscope results showed all the selected aggregates have a highly porous andAll the selected aggregates had a low bulk density ranging from 30 to 130 kg∙m and a high porosity betweenThe thermal conductivity of the selected bio-aggregates ranged from 0.04 to 0.06 W∙m ∙K .The thermal conductivity of the selected aggregates was not only depending on the bulk density of the

Keywords: bio-based aggregates     density     porosity     thermal conductivity     hygric properties    

Retraction note to: Industrial bio-based plant aggregates as hygric and insulating construction materials

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Frontiers of Chemical Science and Engineering doi: 10.1007/s11705-021-2039-9

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 637-648 doi: 10.1007/s11709-023-0902-0

Abstract: concrete structures is affected by the complex stress state inside concrete, and the effect of recycled aggregatesCarbonation enhances the performance of the recycled aggregates and reduces their porosity, thereby reducing

Keywords: recycled concrete     carbonated recycled coarse aggregate     biaxial compression     chloride diffusion     stress level    

Laboratory assessment of Alaska aggregates using Micro-Deval test

Jenny LIU,Sheng ZHAO,Anthony MULLIN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 27-34 doi: 10.1007/s11709-016-0359-5

Abstract: Aggregates suitable for use in asphalt concrete (AC) pavement construction must meet durability criteriaIn Alaska, durability tests currently being used for aggregates in AC pavement include Los Angeles (LAfeasibility of using Micro-Deval test, commonly used in other states, to evaluate the durability of Alaskan aggregateson the testing results, it is found that using Micro-Deval test for durability assessment of Alaska aggregatesLA abrasion and sulfate soundness tests to provide a more desirable durability assessment of Alaska aggregates

Keywords: aggregate durability     Washington degradation test     Micro-Deval test    

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 754-772 doi: 10.1007/s11709-021-0711-2

Abstract: Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregateTwo different types of fine (coarse) aggregates are considered: sea sand and river sand (natural andrecycled coarse aggregates).Generally, the effect of coarse aggregates on the axial deformation of SSRAC is clear; however, the deformation

Keywords: sea sand recycled aggregate concrete     recycled coarse aggregate replacement percentage     sea sand chloride ion content     long-term mechanical properties     stress–strain curve    

Microprofiles of activated sludge aggregates using microelectrodes in completely autotrophic nitrogen

Yongtao LV,Xuan CHEN,Lei WANG,Kai JU,Xiaoqiang CHEN,Rui MIAO,Xudong WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 390-398 doi: 10.1007/s11783-015-0818-6

Abstract: To quantify the microbial activities inside the sludge aggregates, microprofiles were measured usingIn the outer layer of sludge aggregates (0–700 μm), nitrite-oxidizing bacteria (NOB) showed high activity

Keywords: microelectrodes     CANON     aerobic ammonium-oxidizing bacteria     anaerobic ammonium-oxidizing bacteria     nitrite-oxidizing bacteria    

Study on micro-texture and skid resistance of aggregate during polishing

Zhenyu QIAN, Lingjian MENG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 346-352 doi: 10.1007/s11709-017-0409-7

Abstract: In this paper, the optical microscope is used to acquire the surface morphology of three types of aggregates

Keywords: skid resistance of pavement     micro-texture     aggregates     polishing test    

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1016-1024 doi: 10.1007/s11709-021-0751-7

Abstract: This study investigated the use of recycled tire-derived aggregate (TDA) mixed with kaolin as a method of increasing the ultimate bearing capacity ( UBC) of a strip footing. Thirteen 1g physical modeling tests were prepared in a rigid box of 0.6 m × 0.9 m in plan and 0.6 m in height. During sample preparation, 0%, 20%, 40%, or 60% (by weight) of powdery, shredded, small-sized granular (G 1–4 mm) or large-sized granular (G 5–8 mm) TDA was mixed with the kaolin. A strip footing was then placed on the stabilized kaolin and was caused to fail under stress-controlled conditions to determine the UBC. A rigorous 3D finite element analysis was developed in Optum G-3 to determine the UBC values based on the experimental test results. The experimental results showed that, except for the 20% powdery TDA, the TDA showed an increase in the UBC of the strip footing. When kaolin mixed with 20% G (5–8 mm), the UBC showed a threefold increase over that for the unreinforced case. The test with 20% G (1–4 mm) recorded the highest subgrade modulus. It was observed that the UBC calculated using finite element modeling overestimated the experimental UBC by an average of 9%.

Keywords: kaolin     physical modeling tests     stabilization     numerical modeling    

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: Aggregates are the biggest contributor to concrete volume and are a crucial parameter in dictating its

Keywords: aggregates     non-destructive testing     sand-to-aggregate volume ratio (s/a)     maximum aggregate    

Punching shear behavior of recycled aggregate concrete slabs with and without steel fibres

Jianzhuang XIAO, Wan WANG, Zhengjiu ZHOU, Mathews M. TAWANA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 725-740 doi: 10.1007/s11709-018-0510-6

Abstract: A study on the punching shear behavior of 8 slabs with recycled aggregate concrete (RAC) was carried out. The two main factors considered were the recycled coarse aggregate (RCA) replacement percentage and the steel fibre volumetric ratio. The failure pattern, load-displacement curves, energy consumption and the punching shear capacity of the slabs were intensively investigated. It was concluded that the punching shear capacity, ductility and energy consumption decreased with the increase of RCA replacement percentage. Research findings indicated that the incorporation of steel fibres could not only improve the energy dissipation capacity and the punching shear capacity of the slab, but also effectively improve the integrity of the slab tension surface and thereby changing the trend from typical punching failure pattern to bending-punching failure pattern. On the basis of the test, the punching shear capacity formula of RAC slabs with and without steel fibres was proposed and discussed.

Keywords: recycled aggregate concrete     steel fibres     slab     punching shear     recycled coarse aggregates replacement percentage    

The Electrically Controlled Flame Synthesis of Oxide Nanop article

Zhuang Qingping

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 74-78

Abstract:

For precise control of the nanophase powder characteristics, electrically assisted hydrocarbon flames using electrodes have shown quite effective, either by ion or electron attachment, so the coagulation rate of the particles is reduced, as unipolarly charged particles repel each other. Charged particles are also attracted towards electrodes, thus lowering the local particle concentration and therefore the collision rate. The flame structure, height, and temperature are also altered by the electric field, which can significantly influence the particle residence time at high temperatures and therefore affect particle growth or sintering and crystallinity. It was shown that field generated by the electrodes across the flame decreases the particle residence time in the high temperature region of the flame.

Keywords: gas combustion     electrically controlled     flame     nanoparticle     aggregates    

Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements

Bruno SUDRET,Hung Xuan DANG,Marc BERVEILLER,Asmahana ZEGHADI,Thierry YALAMAS

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 121-140 doi: 10.1007/s11709-015-0290-1

Abstract: The spatial variability of stress fields resulting from polycrystalline aggregate calculations involving random grain geometry and crystal orientations is investigated. A periodogram-based method is proposed to identify the properties of homogeneous Gaussian random fields (power spectral density and related covariance structure). Based on a set of finite element polycrystalline aggregate calculations the properties of the maximal principal stress field are identified. Two cases are considered, using either a fixed or random grain geometry. The stability of the method w.r.t the number of samples and the load level (up to 3.5% macroscopic deformation) is investigated.

Keywords: polycrystalline aggregates     crystal plasticity     random fields     spatial variability     correlation structure    

Behavior of aqueous stable colloidal nano-C

Jing HUO,Ye YU,Ling GE,Bo ZHANG,Yiliang HE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 197-205 doi: 10.1007/s11783-014-0624-6

Abstract: This work examined the behavior of aqueous stable colloidal nano-C (nC ) aggregates under differentResults show that the nC aggregates became more dispersive and restored the capability of generating, and the kinetic rate constant of generating the singlet oxygen for nC aggregates was improved.The mean size of nC aggregates in the presence of TX100 had no obvious variations when the pH rangedCollective data suggest that variations in physicochemical properties of nC aggregates are strongly

Keywords: nano-C60 (nC60) aggregates     photochemical reactivity     artificial biological membrane    

Multi-Peptide Adsorption on Uncharged Solid Surfaces: A Coarse-Grained Simulation Study Research

Ruosang Qiu, Jie Xiao, Xiao Dong Chen

Engineering 2020, Volume 6, Issue 2,   Pages 185-194 doi: 10.1016/j.eng.2018.12.012

Abstract: It was observed that around half (46.6%) of the 12-Ala peptide chains could form aggregates. 30.0% ofsurface, some of these (51.0%) merged into each other or merged with floating peptides to form adsorbed aggregatespeptide deposition has a potential influence on the further adsorption of single peptide chains and aggregates

Keywords: Peptide chains     Aggregates     Adsorption     Coarse-grained simulation    

Title Author Date Type Operation

MICROBIAL NECROMASS WITHIN AGGREGATES STABILIZES PHYSICALLY-PROTECTED C RESPONSE TO CROPLAND MANAGEMENT

Journal Article

Industrial bio-based plant aggregates as hygric and insulating construction materials for energy efficient

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Journal Article

Retraction note to: Industrial bio-based plant aggregates as hygric and insulating construction materials

Yunhong Jiang, Mike Lawrence, Meng Zhang, Jiandong Cui

Journal Article

Chloride diffusion in concrete with carbonated recycled coarse aggregates under biaxial compression

Journal Article

Laboratory assessment of Alaska aggregates using Micro-Deval test

Jenny LIU,Sheng ZHAO,Anthony MULLIN

Journal Article

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Journal Article

Microprofiles of activated sludge aggregates using microelectrodes in completely autotrophic nitrogen

Yongtao LV,Xuan CHEN,Lei WANG,Kai JU,Xiaoqiang CHEN,Rui MIAO,Xudong WANG

Journal Article

Study on micro-texture and skid resistance of aggregate during polishing

Zhenyu QIAN, Lingjian MENG

Journal Article

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Journal Article

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Punching shear behavior of recycled aggregate concrete slabs with and without steel fibres

Jianzhuang XIAO, Wan WANG, Zhengjiu ZHOU, Mathews M. TAWANA

Journal Article

The Electrically Controlled Flame Synthesis of Oxide Nanop article

Zhuang Qingping

Journal Article

Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements

Bruno SUDRET,Hung Xuan DANG,Marc BERVEILLER,Asmahana ZEGHADI,Thierry YALAMAS

Journal Article

Behavior of aqueous stable colloidal nano-C

Jing HUO,Ye YU,Ling GE,Bo ZHANG,Yiliang HE

Journal Article

Multi-Peptide Adsorption on Uncharged Solid Surfaces: A Coarse-Grained Simulation Study

Ruosang Qiu, Jie Xiao, Xiao Dong Chen

Journal Article