12 results match your criteria: "Chongqing Water Resources and Electric Engineering College[Affiliation]"

Co-pyrolysis development of waste tire-sludge adsorbent by mixed of waste tires and oily sludge.

Sci Rep

August 2024

State Key Laboratory of Petroleum and Pollution Control, CNPC, 102206, Beijing, China.

To facilitate resource utilization of waste tires (WT) and oily sludge (OS), waste tire-sludge adsorbent (WTSA) was developed using co-pyrolysis technology, and its effectiveness in adsorbing crude oil was investigated. The study revealed that the optimal preparation conditions for WTSA included a 1.5:1 mass ratio of WT to OS, a co-pyrolysis temperature of 600 ℃, a co-pyrolysis holding time of 2 hours, and a co-pyrolysis heating rate of 15 ℃/min.

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The aging behavior of degradable plastic polylactic acid under the interaction of environmental factors.

Environ Geochem Health

April 2024

Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.

Microplastics leaching from aging biodegradable plastics pose potential environmental threats. This study used response surface methodology (RSM) to investigate the impact of temperature, light, and humidity on the aging characteristics of polylactic acid (PLA). Key evaluation metrics included the C/O ratio, functional groups, crystallinity, surface topography, and mechanical properties.

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Enhancement of catalytic detoxification of polycyclic aromatic hydrocarbons in fly ash from municipal solid waste incineration via magnetic hydroxyapatite-assisted hydrothermal treatment.

Sci Total Environ

March 2024

Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China.

The emission of carcinogenic, teratogenic, and mutagenic polycyclic aromatic hydrocarbons (PAHs) during municipal solid waste incineration (MSWI) of fly ash (FA) has attracted significant attention. Hydrothermal treatment (HT) has emerged as a practical approach for degrading PAHs during MSWI of FA by utilizing magnetite (FeO) as a catalyst and hydrogen peroxide (HO) as an oxidizing agent. In this study, as an alternative to traditional hydroxyapatite (HAP), eggshell-derived magnetic hydroxyapatite (MHAP) was synthesized and applied in the hydrothermal catalytic degradation of PAHs in MSWI FA in an HO system for the first time.

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This paper proposes the design of a helical hedge flow channel with a high energy loss, which shows promising potential for application in fruit tree root emitters. The aim is to investigate the relationship between the energy loss form in the channel and its influencing factors. The hydraulic performance testing method is employed to analyze the factors that affect energy loss.

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The relationship between self-control and mental health problems among Chinese university students.

Front Public Health

December 2023

Medical English Department, College of Basic Medicine, Army Medical University, Chongqing, China.

Background: Mental health issues are often associated with poor self-control. Therefore, effective interventions against mental health problems should include self-control training. However, it is unclear whether the effect of self-control varies across different types of mental health problems.

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Background: Returning to social life after the lifting of COVID-19 lockdown may increase risk of social anxiety, which is highly co-morbid with depression. However, few studies have reported the association between them.

Aims: To explore the complex relationship between social anxiety and depression symptoms in left-behind children after the lifting of the COVID-19 lockdown.

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The preparation process of synergistic preparation of sludge carbon by oily sludge and walnut shells are divided into two stages: carbonization preparation of a carbon precursor and activation preparation of sludge carbon. The preparation conditions of the carbon precursor are 2.5:1 mass ratio of oily sludge and walnut shells, carbonization temperature is 450°C, and time is 2 h.

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Root exudates are determined by plant species configuration and affect microbial community, which in turn affect purification efficiency of constructed wetlands (CWs). However, it is not well understood how plant configuration affects CW purification efficiency through specific root exudates. Herein, four mixed culture CWs were constructed; CW-G3 with Iris pseudacorus, Iris sibirica, Juncus effusus, and Hydrocotyle vulgaris showed the optimal diversity nutrients removal efficiency (TN: 94.

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Aiming at the problems of the traditional industrial robot fault diagnosis model, such as low accuracy, low efficiency, poor stability, and real-time performance in multi-fault state diagnosis, a fault diagnosis method based on DBN joint information fusion technology is proposed. By studying the information processing method and the deep learning theory, this paper takes the fault of the joint bearing of the industrial robot as the research object. It adopts the technique of combining the deep belief network (DBN) and wavelet energy entropy, and the fault diagnosis of industrial robot is studied.

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Study on Reutilization of Pyrolytic Residues of Oily Sludge.

Int J Anal Chem

October 2020

State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China.

Article Synopsis
  • Pyrolytic residues from oily sludge are hazardous solid wastes created by high-temperature pyrolysis, which can cause environmental issues if disposed of improperly.
  • The study explores recovering pyrolytic carbon from these residues through physical and chemical methods to treat oilfield wastewater and adsorb oil.
  • The pyrolytic carbon achieved a high purity of 95.93% and outperformed activated carbon in both adsorption speed and capacity for diesel and crude oil.
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Microsporidia are highly specialized obligate intracellular, spore forming divergent fungi with a wide variety host range that includes most vertebrates and invertebrates. The resistant spores are surrounded by a rigid cell wall which consists of three layers: the electron-lucent chitin and protein inner endospore, the outer-electron-dense and mainly proteinaceous exospore and plasma membrane. Interestingly, microsporidia owns a special invasion organelle, called polar tube, coiled within the interior of the spore wall and attached to anchoring disk at the anterior end of spore.

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All microsporidia possess a unique, highly specialized invasion mechanism that involves the polar tube and spore wall. The interaction between spore wall proteins (SWPs) and polar tube proteins (PTPs) in the formation, arrangement, orderly orientation, and function of the polar tube and spore wall remains to be determined. This study was undertaken to examine the protein interactions of SWP7 (NbSWP7), NbSWP9, and PTPs.

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