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Photoaging mechanism of microplastics: a perspective on the effect of dissolved organic matter in natural water

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1743-8

Abstract:

● Microplastics (MPs) undergo photoaging in natural water under light irradiation.

Keywords: Microplastics     Photoaging     Dissolved organic matter     ROS generation    

Discovery of novel ursolic acid derivatives as effective antimicrobial agents through a ROS-mediated

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2101-2113 doi: 10.1007/s11705-023-2361-5

Abstract: In response to the reduction of food production and economic losses caused by plant bacterial diseases, it is necessary to develop new, efficient, and green pesticides. Natural products are rich and sustainable source for the development of new pesticides due to their low toxicity, easy degradation, and eco-friendliness. In this study, we prepared three series of ursolic acid derivatives and assessed their antibacterial ability. Most target compounds exhibited outstanding antibacterial activities. Among them, the relative optimal EC50 values of Xanthomonas oryzae pv. oryzae and Xanthomonas axonopodis pv. citri were 2.23 (A17) and 1.39 (A16) μg·mL–1, respectively. The antimicrobial mechanism showed that compound A17 induced an excessive accumulation and production of reactive oxygen species in bacteria and damaged the cell membrane integrity to kill bacteria. More interestingly, the addition of low concentrations of exogenous hydrogen peroxide enhanced the antibacterial efficacy of compound A17 against Xanthomonas oryzae pv. oryzae. These entertaining results suggested that compound A17 induced an apparent apoptotic behavior in the tested bacteria. Overall, we developed the promising antimicrobial agents that destroyed the redox system of phytopathogenic bacteria, further demonstrating the unprecedented potential of ursolic acid for agricultural applications.

Keywords: ursolic acid     antibacterial activities     reactive oxygen species     apoptosis    

Toxic effect of sodium perfluorononyloxy-benzenesulfonate on in aerobic denitrification, cell structure and gene expression

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1391-9

Abstract:

• OBS inhibited the growth of P. stutzeri and destroyed its structure.

Keywords: perfluorononyloxy-benzenesulfonate     Aerobic denitrification     Pseudomonas stutzeri     Ecotoxicity     ROS    

Studies on advanced water-cooled reactors beyond generation III for power generation

CHENG Xu

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 141-149 doi: 10.1007/s11708-007-0018-6

Abstract: power program motivates the country s nuclear community to develop advanced reactor concepts beyond generationselection criteria, two new types of water-cooled reactors are recommended for future Chinese nuclear power generationIt is a logical extension of the generation III PWR technology in China.

Keywords: Chinese situation     selection     generation     water-cooled     feasibility    

Synthesis and photoconductivities of bisazo charge generation materials

ZHAO Qian, WANG Shirong, LI Xianggao, HE Lili

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 330-334 doi: 10.1007/s11705-008-0061-9

Abstract: Using these bisazo compounds as charge generation materials and CT-191(2-methyl-4-(-dibenzyl)aminobenzoaldehyde

Keywords: -6-aminobenzoxazole     4′-aminophenyl     transportation     xerographic performance     generation    

Self-generation of machining precision and its realization in lapping of super precision solid balls

ZHANG Bopeng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 348-353 doi: 10.1007/s11465-008-0065-7

Abstract: This paper presents the principle of self-generation of machining precision by explaining its basic conceptA self-generation system is a kind of system with self-organization capability.The self-generation of machining precision for solid balls with super precision is emphatically explainedNecessary conditions for achieving self-generation of machining precision are given.of errors, self-generation of precision, and self-generating system for the given.

Keywords: self-generation     necessary     self-regulation capability     viewpoint     Necessary    

A review on technologies with electricity generation potentials using liquified natural gas regasification

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 332-379 doi: 10.1007/s11708-023-0863-y

Abstract: In modern times, worldwide requirements to curb greenhouse gas emissions, and increment in energy demand due to the progress of humanity, have become a serious concern. In such scenarios, the effective and efficient utilization of the liquified natural gas (LNG) regasification cold energy (RCE), in the economically and environmentally viable methods, could present a great opportunity in tackling the core issues related to global warming across the world. In this paper, the technologies that are widely used to harness the LNG RCE for electrical power have been reviewed. The systems incorporating, the Rankine cycles, Stirling engines, Kalina cycles, Brayton cycles, Allam cycles, and fuel cells have been considered. Additionally, the economic and environmental studies apart from the thermal studies have also been reviewed. Moreover, the discussion regarding the systems with respect to the regassification pressure of the LNG has also been provided. The aim of this paper is to provide guidelines for the prospective researchers and policy makers in their decision making.

Keywords: liquified natural gas     cold energy     power generation    

Detection of oxidative stress and DNA damage in freshwater snail

Daoud Ali, Huma Ali, Saud Alifiri, Saad Alkahtani, Abdullah A Alkahtane, Shaik Althaf Huasain

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 5, doi: 10.1007/s11783-018-1039-6

Abstract:

Freshwater snail (Lymnea luteola L.) is good bio indicator of water pollution.

Profenofos is tested for its molluscicidal activity against Lymnea luteola L. snail.

Deleterious effects on some oxidative stress were detected.

Profenofos has a genotoxic effect on Lymnea luteola L. snails.

Keywords: Acute toxicity     Profenofos     ROS     oxidative stress     DNA damage     Lymnea luteola    

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic hydrocarbons

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1252-y

Abstract: Abstract • Regulation of redox conditions promotes the generation of free radicals on HM. • HM-PFRsdepending on stability. • The newly produced PFRs readily release electrons to oxygen and generate ROS. • PFR-induced ROS mediate the transformation of organic contaminants adsorbed on HM.unstable” free radicals released an electron to O2, inducing the formation of reactive oxygen species (ROSThe generated ROS promoted the degradation of polycyclic aromatic hydrocarbons based on the radical quenching

Keywords: Polycyclic aromatic hydrocarbons (PAHs)     Persistent free radicals (PFRs)     Redox     Reactive oxygen species (ROS    

Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

Jinxin ZHONG, Congliang HUANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 141-148 doi: 10.1007/s11708-021-0725-4

Abstract: Many efforts have been focused on enhancing the vapor generation in bi-layer solar steam generation systemsstudied although the high-temperature vapor has a wide use in medical sterilization and electricity generation

Keywords: solar steam generation     solar energy     numerical method     porous material    

Road sub-surface defect detection based on gprMax forward simulation-sample generation and Swin Transformer-YOLOX

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 3,   Pages 334-349 doi: 10.1007/s11709-024-1076-0

Abstract: Training samples for deep learning networks are typically obtained through various field experiments, which require significant manpower, resource and time consumption. However, it is possible to utilize simulated data to augment the training samples. In this paper, by comparing the actual experimental model with the simulated model generated by the gprMax [1] forward simulation method, the feasibility of obtaining simulated samples through gprMax simulation is validated. Subsequently, the samples generated by gprMax forward simulation are used for training the network to detect objects in existing real samples. At the same time, aiming at the detection and intelligent recognition of road sub-surface defects, the Swin-YOLOX algorithm is introduced, and the excellence of the detection network, which is improved by augmenting the simulated samples with real samples, is further verified. By comparing the prediction performance of the object detection models, it is observed that the model trained with mixed samples achieved a recall of 94.74% and a mean average precision (mAP) of 97.71%, surpassing the model trained only on real samples by 12.95% and 15.64%, respectively. The feasibility and excellence of training the model with mixed samples are confirmed. The potential of using a fusion of simulated and existing real samples instead of repeatedly acquiring new real samples by field experiment is demonstrated by this study, thereby improving detection efficiency, saving resources, and providing a new approach to the problem of multiple interpretations in ground penetrating radar (GPR) data.

Keywords: ground penetrating radar     gprMax     forward modeling     sample generation     Swin-YOLOX     object detection    

Important parameters in plasma jets for the production of RONS in liquids for plasma medicine: A brief review

Anna Khlyustova, Cédric Labay, Zdenko Machala, Maria-Pau Ginebra, Cristina Canal

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 238-252 doi: 10.1007/s11705-019-1801-8

Abstract: Reactive oxygen and nitrogen species (RONS) are among the key factors in plasma medicine. They are generated by atmospheric plasmas in biological fluids, living tissues and in a variety of liquids. This ability of plasmas to create a delicate mix of RONS in liquids has been used to design remote or indirect treatments for oncological therapy by treating biological fluids by plasmas and putting them in contact with the tumour. Documented effects include selective cancer cell toxicity, even though the exact mechanisms involved are still under investigation. However, the “right” dose for suitable therapeutical activity is crucial and still under debate. The wide variety of plasma sources hampers comparisons. This review focuses on atmospheric pressure plasma jets as the most studied plasma devices in plasma medicine and compiles the conditions employed to generate RONS in relevant liquids and the concentration ranges obtained. The concentrations of H O , NO , NO and short-lived oxygen species are compared critically to provide a useful overview for the reader.

Keywords: atmospheric plasma jets     liquids     ROS     RNS     plasma-dose    

Exploring the cancer genome in the era of next-generation sequencing

Hui Dong, Shengyue Wang

Frontiers of Medicine 2012, Volume 6, Issue 1,   Pages 48-55 doi: 10.1007/s11684-012-0182-x

Abstract:

The emergence of next-generation sequencing technologies has led to dramatic advances in cancer genomeThe increased efficiency and resolution of next-generation sequencing greatly facilitate the detection

Keywords: next-generation sequencing     cancer genome     whole genome sequencing     exome     transcriptome    

Integrated approach to winery waste: waste generation and data consolidation

Margarida OLIVEIRA,Elizabeth DUARTE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 168-176 doi: 10.1007/s11783-014-0693-6

Abstract: The winemaking process involves the generation of a significant amount of waste and wastewater.As each winery is unique in waste generation and disposal, plans for environmentally friendly waste management

Keywords: waste management     wastewater reuse     winery wastewater    

A hybrid fuel cell for water purification and simultaneously electricity generation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1611-6

Abstract:

● A novel hybrid fuel cell (F-HFC) was fabricated.

Keywords: Flow-through field     Hybrid fuel cell     Polyoxometalates     Water purification     Electricity generation    

Title Author Date Type Operation

Photoaging mechanism of microplastics: a perspective on the effect of dissolved organic matter in natural water

Journal Article

Discovery of novel ursolic acid derivatives as effective antimicrobial agents through a ROS-mediated

Journal Article

Toxic effect of sodium perfluorononyloxy-benzenesulfonate on in aerobic denitrification, cell structure and gene expression

Journal Article

Studies on advanced water-cooled reactors beyond generation III for power generation

CHENG Xu

Journal Article

Synthesis and photoconductivities of bisazo charge generation materials

ZHAO Qian, WANG Shirong, LI Xianggao, HE Lili

Journal Article

Self-generation of machining precision and its realization in lapping of super precision solid balls

ZHANG Bopeng

Journal Article

A review on technologies with electricity generation potentials using liquified natural gas regasification

Journal Article

Detection of oxidative stress and DNA damage in freshwater snail

Daoud Ali, Huma Ali, Saud Alifiri, Saad Alkahtani, Abdullah A Alkahtane, Shaik Althaf Huasain

Journal Article

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic aromatic hydrocarbons

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Journal Article

Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

Jinxin ZHONG, Congliang HUANG

Journal Article

Road sub-surface defect detection based on gprMax forward simulation-sample generation and Swin Transformer-YOLOX

Journal Article

Important parameters in plasma jets for the production of RONS in liquids for plasma medicine: A brief review

Anna Khlyustova, Cédric Labay, Zdenko Machala, Maria-Pau Ginebra, Cristina Canal

Journal Article

Exploring the cancer genome in the era of next-generation sequencing

Hui Dong, Shengyue Wang

Journal Article

Integrated approach to winery waste: waste generation and data consolidation

Margarida OLIVEIRA,Elizabeth DUARTE

Journal Article

A hybrid fuel cell for water purification and simultaneously electricity generation

Journal Article