Porosity and permeability variations of a dam curtain during dissolution

Huo, Jixiang; Ma, Feifei; Xiaolei, JI

doi:10.1016/j.wse.2019.05.007

Cited by 16 publications

(7 citation statements)

References 21 publications

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“…In addition, the ratio between the segments showed a value < 0 ( p = −0.062). This indicates that the number of documents on the border of the two segments was closer to the initial value, and the amplitude of the first segment in the curve was smaller than that of the second [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Analysis and Modeling of Innovations in the Global Microalgae Lipids Market

Carvalho

Pessôa

Deamici

et al. 2022

BioTech

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Microalgae lipids offer numerous advantages over those of plants and animals, enabling the sustainable commercialization of high value-added products in different markets. Although these markets are in a vertiginous annual expansion, technological life cycle modeling is a tool that has been rarely used for microalgae. Life cycle modeling is capable of assisting with decision-making based on data and is considered as a versatile model, usable in multiple software analyzing and diagnostic tasks. Modeling technological trends makes it possible to categorize the development level of the market and predict phase changes, reducing uncertainties and increasing investments. This study aims to fill this gap by performing a global analysis and modeling of microalgal lipid innovations. The Espacenet and Orbit platforms were used by crossing the keywords “microalgae”, “lipid*”, and the IPC code C12 (biochemistry and microbiology). Different sigmoid growth models were used in the present study. A successive repetition of the Chlorella genus category was found in the keyword clusters regarding extraction and separation of lipids. The life cycle S curve indicates a market starting at the maturity phase, where the BiDoseResp model stands out. The main countries and institutions at the technological forefront are shown, as well as potential technological domains for opening new markets.

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Section: Resultsmentioning

confidence: 99%

Analysis and Modeling of Innovations in the Global Microalgae Lipids Market

Carvalho

Pessôa

Deamici

et al. 2022

BioTech

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“…where k is the current permeability, is the current porosity, k 0 is the initial permeability and 0 is the initial porosity. The rate at which porosity reduction occurs is given by (Huo et al, 2019;Noiriel et al, 2004):…”

Section: Chemical Kineticsmentioning

confidence: 99%

Mathematical modelling and numerical simulation of reverse-osmosis desalination

Pasquale¹,

Akele²,

Municchi³

et al. 2023

Preprint

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The reverse osmosis membrane module is an integral element of a desalination system as it determines the overall performance of the desalination plant. The fraction of clean water that can be recovered via this process is often limited by salt precipitation which plays a critical role in its sustainability. In this work, we present a model to study the complex interplay between flow, transport and precipitation processes in reverse osmosis membranes, which together influence recovery and in turn process sustainability. A reactive porous interface model describes the membrane with a dynamic evolving porosity and permeability to capture the scaling and clogging of the membrane. An open-source finite-volume numerical solver is implemented within the OpenFOAM ® library and numerical tests are presented here showing the effect of the various parameters of the model and the robustness of the model to describe a wide range of operating conditions.

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“…Hyperbola function (Eq.2) proposed by Ничипорович A.A. (Ничипорови ч A.A., 1941) and was widely applied in engineering construction in terms of settlement problem. And BiDoseRest (Eq.3) belongs to growth/sigmoidal type function which is a good fit for bidirectional cyclic load condition (Huo J.X., 2019), and used to describe the phase transformation.…”

Section: Elementary Rheological Mechanics Characteristic Based Creep ...mentioning

confidence: 99%

An experimental investigation of the pile-soil interface characteristics in cold region under varying exposure temperature and accumulated permanent deformation under freezing-thawing cycles

Liu,

Niu

2023

Preprint

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The creep behavior of the frozen soil-structure interface as the research point in this paper subjected to mechanism theory principles of water-thermal coupling cycle was exhibited. There are mainly three situations, one is pile uplifting in the freezing heave period owing to frost heave force, then soil melt, and the pile would keep stable which the skin friction supported the pile at interface, three is both cases acting as stated above, the positive frozen cohesive is not enough to support the pile in frozen soil combined the negative friction at the same time. The frost heave with creep effect analysis was given the mainly concern. The emphasis of the frost heave phenomenon considering inner shear behavior under different geometric parameters in Freezing-Thawing cycle pointed that creep effect of the soil-pile interface played a domain role in the total deformation of interface due to common source of the settlement and uplift in cold regions. It reveals that the actual strain rate was sensitive at deeper soil layer by layer towards ground, according to the good agreement between the relaxation data and secondary creep conditions. The best fit regression was occurred in the period of approximate 65 th day to 200 th day accordingly. The strain mainly presents promoted when the temperature are below-2℃ in freezing transmission period, while it shows reduction trend with water content increase to ice-rich soil. It is taken for that with flow rate varying with stress conditions which exceed a yield stress level. And it shown the relationship of stress and strain at various depths with diminished lay-up character distribution. The numerical calculated result was shown that the high cohesion concentration zone be in the position of-2m depths of pile. And the mechanism model can be described by Kelvin-Voigt model, with validating by experimental simulation and published literature. Above all, it can be seen the temperature and moisture were the most significant effects for interface frost heave, which is indicated by the shear creep response analyzing. The combination of factors closely associated with the cohesion leading the pile continuously uplifting. The creep effect worked on the interface separated by three stage of primary creep stage, secondary creep stage and tertiary creep stage in frozen and thawing period by different cohesion force. So the characteristics of creep combined the Kelvin Voigt model was presented in this paper.

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Porosity and permeability variations of a dam curtain during dissolution

Cited by 16 publications

References 21 publications

Analysis and Modeling of Innovations in the Global Microalgae Lipids Market

Analysis and Modeling of Innovations in the Global Microalgae Lipids Market

Mathematical modelling and numerical simulation of reverse-osmosis desalination

An experimental investigation of the pile-soil interface characteristics in cold region under varying exposure temperature and accumulated permanent deformation under freezing-thawing cycles

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