Experimental Study on the Solubility of Fluorene in Different Solvents

Tang, Zilong; Wang, Dongdong; Wang, Q.; Liu, Wei

doi:10.1007/s12209-018-0142-x

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…The wave velocity potential's boundary conditions are nonlinear. However, when solving this nonlinear problem, perturbation methods are often used to transform the nonlinear problem into a linear problem and obtain approximate solutions of different orders [16].…”

Section: Potential Flow Theorymentioning

confidence: 99%

Hydrodynamic Response of a Large-Scale Mariculture Ship Based on Potential Flow Theory

He,

Zhou,

2023

JMSE

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The marine fishery will be the main form of the marine economy in the future. Simulating a hydrodynamic response under normal and extreme working conditions is the main means of structural analysis and design of a mariculture ship. In this paper, a simulation methodology is proposed based on potential flow theory, focusing on a semi-submersible large-scale mariculture ship with a rigid frame. Abaqus/Aqua 2020 software is used to establish a full-scale dynamic analysis model of the fishery. In the simulation, a nonlinear implicit integration method is applied, and the non-deterministic boundary conditions of the floating body are optimized using dynamic equilibrium principles. By varying the wave and flow conditions, the variations in mooring forces, vibration amplitudes, and average vibration values are analyzed. Furthermore, the dynamic changes in the overall spatial displacements of the fishery, characteristics of longitudinal and vertical oscillations, and mid-span deflections are analyzed. It is concluded that the mooring force is linearly correlated with the flow velocity, that a higher wave increases the longitudinal oscillation amplitude, and that a longer wave period leads to higher mooring forces and longitudinal heaving amplitude. These dynamic response and displacement results of the mariculture ship are expected to provide a basis for its design and safety assessment.

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Section: Potential Flow Theorymentioning

confidence: 99%

Hydrodynamic Response of a Large-Scale Mariculture Ship Based on Potential Flow Theory

He,

Zhou,

2023

JMSE

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“…The economic risks associated with change, such as uncertainty about the marketplace, alongside complexity of current production systems create further barriers (Veleva et al, 2017). For example Tang and Wang (2002) found that only 13.3% of consumers in China considered eco-labelled products to have an influence on their purchasing behaviour. Therefore, if consumers resist change this could inhibit profits, preventing the extension of more circular processes.…”

Section: Drivers Enablers and Barriers For Circularitymentioning

confidence: 99%

Levers for a corporate transition to a plastics circular economy

Barford

Ahmad

2022

Bus Strat Env

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With the global economy not yet 10% circular, businesses are key stakeholders in designing new forms of resource use, especially large multinationals. However, compared with the wealth of studies on 'born sustainable' start-ups, there is minimal case study or interview based research into how incumbent companies are approaching this transition. Focusing on plastics, we ask: how does one incumbent multinational company approach the circular economy transition? This paper presents a case study of the incumbent multinational chemical company Dow, a leading plastics manufacturer. Varied external stressors and drivers for the circular economy act upon a company (which also has its own imperatives), resulting in tentative steps towards circular economy. To date, these steps have tweaked the existing system rather than radically altering the business model. For companies, like for the entire global economy, this transition has only just begun. This paper identifies key drivers, enablers and barriers of the circular economy, none of which are fixed or immutable. Knowing which levers for change are available and effective could help policy makers to shift gear to enable quicker progress towards circularity. Overall, broad based support and engagement is needed to progress the circular economy, hence all stakeholders have roles to play in demanding and enacting circular practices.

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“…Yu et al [21,22] found that when the minimum concrete cover thickness is 3.0 cm and the minimum concrete strength is C70, the service life requirement of 50 years can be satisfied; when the minimum concrete cover thickness is 3.0 cm and the minimum concrete strength is C80, the design service life requirement of 100 years can be met for CAC frame structures with silane coating and 304 stainless steel. According to Tang Cong's [23] analysis of the costs of stainless steel, epoxy-coated steel, and ordinary steel over their entire life cycles, the material cost of stainless steel is roughly 4-6 times that of ordinary steel, the total cost of epoxy-coated steel's materials and processing is roughly 2-3 times that of ordinary steel, and the costs of necessary maintenance, repairs, and anti-corrosion measures in late service come into play. The life cycle cost of stainless steel is approximately 1750 USD/ton, while the life cycle cost of epoxy-coated steel is approximately 14.00 USD/ton, which results in a 20% cost savings when using epoxy-coated steel after accounting for necessary maintenance, repair, and anti-corrosion measures.…”

Section: Introductionmentioning

confidence: 99%

Protective Performance of Coated Reinforcement in Coral Concrete under Dry/Wet Cycling

Cao

Akbar

et al. 2023

Materials

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The actual protective performance of the coated reinforcement in coral concrete was investigated by measuring the chloride ion diffusion coefficient, electrochemical analysis, and numerical simulation. The test results show that the corrosion rate of coated reinforcement in coral concrete under the action of wet and dry cycles is kept at a low level, and the Rp value is always greater than 250 kΩ·cm2 during the test period, which is in the uncorroded state and has good protection performance. Moreover, the chloride ion diffusion coefficient D is in accordance with the power function relationship with the wet and dry cycle time, and a time-varying model of chloride ion concentration on the surface of coral concrete is established. The surface chloride ion concentration of coral concrete reinforcement was modeled as a time-varying model; the cathodic zone of coral concrete members was the most active, increasing from 0 V to 0.14 V from 0 to 20 years, with a large increase in potential difference before the 7th year, and a significant decrease in the increase after the 7th year.

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Experimental Study on the Solubility of Fluorene in Different Solvents

Cited by 4 publications

References 11 publications

Hydrodynamic Response of a Large-Scale Mariculture Ship Based on Potential Flow Theory

Hydrodynamic Response of a Large-Scale Mariculture Ship Based on Potential Flow Theory

Levers for a corporate transition to a plastics circular economy

Protective Performance of Coated Reinforcement in Coral Concrete under Dry/Wet Cycling

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