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Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 117-124 doi: 10.1007/s11783-010-0220-3

Abstract: properties of lightweight sludge ceramic (LSC) and the mechanisms of action of the organic and inorganic foamingagents (OFAs and IFAs).

Keywords： sludge     foaming agents     ceramics     preheating process    

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Fundamental influences of particles on stirred and unstirred venting processes of foaming systems

Henrik LEIMEISTER,Jörg STEINBACH

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 141-148 doi: 10.1007/s11705-014-1423-0

Abstract: Venting is the common safety measure to protect plant equipment against excessive overpressure. So far, scenarios in which particles were part of the system and should have been accounted for did ignore their presence; the scenarios were treated like a two-phase system. Current research shows that particles can have a major influence on the venting behaviour. Experimental results indicate that particles affect level swell and relief flow especially of foamy systems. Based on those results four different layers of influence of the particle have been identified and are presented in a first model. Based on this model recommendations for the development of new and more complex models are given.

Keywords： venting     multi-phase    

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Evaluation of 1,4-naphthoquinone derivatives as antibacterial agents: activity and mechanistic studies

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1631-2

Abstract:

● All 1,4-naphthoquinone hybrids exhibited significant antimicrobial activity.

Keywords： 1     4-naphthoquinone derivatives     Antibacterial     Action mechanism     RecA    

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Novel lysosome-targeted anticancer fluorescent agents used in zebrafish and nude mouse tumour imaging

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 112-120 doi: 10.1007/s11705-021-2075-5

Abstract: The design of three novel fatty nitrogen mustard-based anticancer agents with fluorophores incorporatedNotably, these compounds can directly serve as both reporting and imaging agents in vitro andin vivo without the need to add other fluorescent tagging agents.

Keywords： fluorescent drug     lysosomal     anticancer     zebrafish     nude-mouse tumour imaging    

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Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 970-978 doi: 10.1007/s11783-014-0716-3

Abstract: For the determination of Sb(III), four compounds were tested as masking agents to inhibit the generationThe effects of the concentrations of the masking agents and of HCl on the fluorescence signals from Sb

Keywords： Sb(III)     Sb(V)     determination     masking agents     hydride generation (HG-AFS)    

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Screening of textile finishing agents available on the Chinese market: An important source of per- and

Mehvish Mumtaz, Yixiang Bao, Wenchao Li, Lingxiao Kong, Jun Huang, Gang Yu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1145-0

Abstract: Kendrick mass defect was used for PFASs screening in textile finishing agents (TFAs).Organofluorinated surfactants are widely employed in textile finishing agents (TFAs) to achieve oil,

Keywords： Textile finishing agents     Kendrick mass defect     Total oxidizable precursor assay    

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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: Overall, we developed the promising antimicrobial agents that destroyed the redox system of phytopathogenic

Keywords： ursolic acid     antibacterial activities     reactive oxygen species     apoptosis    

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Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 156-166 doi: 10.1007/s11705-022-2196-5

Abstract: To ensure the production of food crops, a series of cryptolepine derivatives were synthesised, after which their antibacterial activities and mechanism of action against three plant pathogens were investigated. Our bioassay results indicated that most of the target compounds displayed potent inhibitory effects against Xanthomonas oryzae (X. oryzae) and Xanthomonas axonopodis pv. citri (X. axonopodis pv. c.). Remarkably, compound 9 exhibited the best in vitro antibacterial activity against X. oryzae, with a minimum inhibitory concentration (MIC) value of 0.78 μg·mL–1. Compound 2 exhibited the best in vitro antibacterial activity against X. axonopodis pv. c., with an MIC value of 0.39 μg·mL–1. These activities were superior to those of copper quinolate (MIC = 6.25, 25 μg·mL–1) and thiodiazole copper (MIC = 100, 200 μg·mL–1) against X. oryzae and X. axonopodis pv. c. In vivo experiments demonstrated the promising applicability of compound 9 for the control of rice bacterial infections. Furthermore, compound 9 was selected as a candidate to conduct preliminary analyses of the antibacterial mechanisms of cryptolepine derivatives. Scanning electron microscopy and transmission electron microscopy observations, extracellular polysaccharide production, biofilm formation, transcriptomic, quantitative reverse transcription-polymerase chain reaction analyses, and molecular docking assays were performed. Collectively, our findings demonstrated that compound 9 might act via multifarious mechanisms to down-regulate virulence factors and cause cell death.

Keywords： cryptolepine derivatives     phytopathogenic bacteria     antibacterial activity     mechanism of action    

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BIOINSECTICIDES AS FUTURE MAINSTREAM PEST CONTROL AGENTS: OPPORTUNITIES AND CHALLENGES

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1,   Pages 82-97 doi: 10.15302/J-FASE-2021404

Abstract:

Bioinsecticides are naturally-occurring substances from different sources that control insect pests. Ideal bioinsecticides should have low toxicity to non-target organisms. They should also be easily degraded in sewage treatment works and natural environments, highly effective in small quantities and affect target pests only. Public concerns about possible side-effects of synthetic pesticides have accelerated bioinsecticide research and development. However, to develop bioinsecticides into mainstream products, their high production costs, short shelf-life and often uncertain modes of action need to be considered. This review summarizes current progress on bioinsecticides which are categorized as biochemical insecticides and their derivatives, plant-incorporated protectants, and microbial bioinsecticides. The current constraints that prevent bioinsecticides from being widely used are discussed and future research directions are proposed.

 

Keywords： biochemical insecticide / bioinsecticide / microbial bioinsecticides / plant-incorporated protectant / RNA insecticide    

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Antimicrobial activity of topical agents against Propionibacterium acnes: an in vitro study of clinical

Ying Ma,Nanxue Zhang,Shi Wu,Haihui Huang,Yanpei Cao

Frontiers of Medicine 2016, Volume 10, Issue 4,   Pages 517-521 doi: 10.1007/s11684-016-0480-9

Abstract:

This study aimed to compare the antimicrobial activities of topical agents against Propionibacterium

Keywords： antimicrobial susceptibility/resistance     Propionibacterium acnes     topical antibiotics     in vitro study    

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Triterpenoid inducers of Nrf2 signaling as potential therapeutic agents in sickle cell disease: a review

Amma Owusu-Ansah,Sung Hee Choi,Agne Petrosiute,John J. Letterio,Alex Yee-Chen Huang

Frontiers of Medicine 2015, Volume 9, Issue 1,   Pages 46-56 doi: 10.1007/s11684-015-0375-1

Abstract:

Sickle cell disease (SCD) is an inherited disorder of hemoglobin in which the abnormal hemoglobin S polymerizes when deoxygenated. This polymerization of hemoglobin S not only results in hemolysis and vaso-occlusion but also precipitates inflammation, oxidative stress and chronic organ dysfunction. Oxidative stress is increasingly recognized as an important intermediate in these pathophysiological processes and is therefore an important target for therapeutic intervention. The transcription factor nuclear erythroid derived- 2 related factor 2 (Nrf2) controls the expression of anti-oxidant enzymes and is emerging as a protein whose function can be exploited with therapeutic intent. This review article is focused on triterpenoids that activate Nrf2, and their potential for reducing oxidative stress in SCD as an approach to prevent organ dysfunction associated with this disease. A brief overview of oxidative stress in the clinical context of SCD is accompanied by a discussion of several pathophysiological mechanisms contributing to oxidative stress. Finally, these mechanisms are then related to current management strategies in SCD that are either utilized currently or under evaluation. The article concludes with a perspective on the potential of the various therapeutic interventions to reduce oxidative stress and morbidity associated with SCD.

Keywords： oxidative stress     Nrf2     triterpenoids     sickle cell disease     vaso-occlusion     CDDO-Me    

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Self-etching adhesives: possible new pulp capping agents to vital pulp therapy

Chun CUI, Xiu-Neng ZHOU, Wei-Min CHEN

Frontiers of Medicine 2011, Volume 5, Issue 1,   Pages 77-79 doi: 10.1007/s11684-010-0104-8

Abstract:

Pulp capping is one of the solving for keeping vital pulp in the case of dentin caries, reversible pulpitis or traumatic pulp exposure. The presence of bacteria on the cavity walls or in the pulp was the major factor that leads to the failure of pulp capping. Traditional pulp capping agent, calcium hydroxide, may not prevent microleakage. Self-etching system is a newly developed adhesive system, which could provide less microleakage and would not break down or dissolve, preventing the oral fluids and bacteria from the pulp along the cavity wall. This may reduce such clinical problems as postoperative sensitivity, secondary caries and marginal discoloration. Researches showed that some kinds of self-etching adhesives induced the mild to moderate inflammatory pulp response, with negative bacterial staining. Inclusion of antibacterial components into self-etching system, such as 12- methacryloyloxydodecylpyridinium bromide (MDPB) may inhibit bacteria and provide better clinical effects. It is speculated that using the self-etching adhesive system containing the antibacterial agent, such as MDPB, to the dental pulp directly or indirectly, may inhibit bacteria after the placement of restoration as well as residual bacteria in the cavity.

Keywords： dental pulp     pulp capping     self-etching adhesives     antibacterial components    

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Effect of polyethylene glycol on the crystallization, rheology and foamability of poly(lactic acid) containing generated polyamide 6 nanofibrils

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2074-2087 doi: 10.1007/s11705-023-2342-8

Abstract: In this study, the rheological properties, crystallization and foaming behavior of poly(lactic acid)Batch foaming results indicated that owing to higher cell nucleation efficiency, the existence of polyamide

Keywords： poly(lactic acid)     foaming     microfibrillation     rheological property     crystallization    

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Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 396-404 doi: 10.1007/s11705-016-1577-z

Abstract: The effect of PDMS viscosity on the foaming behavior of HMSPP was systematically investigated using supercriticalCO as the foaming agent.These small domains act as bubble nucleation sites and thus may be responsible for the improved foaming

Keywords： high melt strength polypropylene (HMSPP)     polydimethylsiloxane (PDMS)     supercritical CO2     foaming    

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Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E. Taraskina, Yong Fang, Fengmin Zhang, N.N. Klimko

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 84-91 doi: 10.1007/s11684-017-0612-x

Abstract:

A multicenter prospective epidemiological survey on the etiologic agents of invasive candidosis was

Keywords： prevalence     &Scy     andida species     invasive candidosis     nosocomial     etiology     MALDI-TOF mass-spectrometry     candidemia    

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Title Author Date Type Operation

Properties and effect of forming sewage sludge into lightweight ceramics

Min YUE, Qinyan YUE, Yuanfeng QI, Baoyu GAO, Hui YU

Journal Article

Fundamental influences of particles on stirred and unstirred venting processes of foaming systems

Henrik LEIMEISTER,Jörg STEINBACH

Journal Article

Evaluation of 1,4-naphthoquinone derivatives as antibacterial agents: activity and mechanistic studies

Journal Article

Novel lysosome-targeted anticancer fluorescent agents used in zebrafish and nude mouse tumour imaging

Journal Article

Comparison of masking agents for antimony speciation analysis using hydride generation atomic fluorescence

Jianhong XI,Mengchang HE,Kunpeng WANG,Guizhi ZHANG

Journal Article

Screening of textile finishing agents available on the Chinese market: An important source of per- and

Mehvish Mumtaz, Yixiang Bao, Wenchao Li, Lingxiao Kong, Jun Huang, Gang Yu

Journal Article

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

Journal Article

Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria

Journal Article

BIOINSECTICIDES AS FUTURE MAINSTREAM PEST CONTROL AGENTS: OPPORTUNITIES AND CHALLENGES

Journal Article

Antimicrobial activity of topical agents against Propionibacterium acnes: an in vitro study of clinical

Ying Ma,Nanxue Zhang,Shi Wu,Haihui Huang,Yanpei Cao

Journal Article

Triterpenoid inducers of Nrf2 signaling as potential therapeutic agents in sickle cell disease: a review

Amma Owusu-Ansah,Sung Hee Choi,Agne Petrosiute,John J. Letterio,Alex Yee-Chen Huang

Journal Article

Self-etching adhesives: possible new pulp capping agents to vital pulp therapy

Chun CUI, Xiu-Neng ZHOU, Wei-Min CHEN

Journal Article

Effect of polyethylene glycol on the crystallization, rheology and foamability of poly(lactic acid) containing generated polyamide 6 nanofibrils

Journal Article

Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Journal Article

Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E. Taraskina, Yong Fang, Fengmin Zhang, N.N. Klimko

Journal Article