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Core designing of a new type of TVS-2M FAs: neutronics and thermal-hydraulics design basis limits

Saeed GHAEMI, Farshad FAGHIHI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 256-278 doi: 10.1007/s11708-018-0583-x

Abstract: It is an independent study on the Russian new proposed FAs, called TVS-2M, which would be applied forThe TVS-2M FA contains gadolinium-oxide which is mixed with UO (for different Gd densities and U-235The new type TVS-2M Fas are modeled by the SARCS software package to find the PMAXS format for threeIn addition, the WIMS-D5 code is suggested for steady core modeling including TVS-2M FAs and/or TVS FAs-2M.

Keywords： TVS-2M FAs     core design basis limits     VVER-1000     analysis     mixture of uranium-gadolinium oxides fuels     thermal-hydraulics    

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Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-1000-0

Abstract: of the recycling performance at a national level for one of the fastest growing e-waste streams: LCD TVsPMs and plastics account for 66 % of the economic value in LCD TVs and 57% of the EI.

Keywords： Recycling     Waste of electrical and electronic equipment (WEEE)     Material flow analysis     LCD TVs     Precious    

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Inhibition of NF-kappa B can enhance Fas-mediated apoptosis in leukemia cell line HL-60

Li WANG, Shi ZHAO, Hong-Xiang WANG, Ping ZOU

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 323-328 doi: 10.1007/s11684-010-0026-5

Abstract: This study explored the effects of nuclear factor-kappa B (NF-κB) inhibitor Bay 11-7082 on Fas/FasL systemand Fas-mediated apoptosis in cell line HL-60 cells.The mRNA and protein levels of Fas, FasL, and X-linked inhibitor of apoptosis protein (XIAP) were detected60 cells were significantly lower than in the controls ( <0.05), but the mRNA and protein levels of FasTherefore, we conclude that Bay 11-7082 can enhance Fas-mediated apoptosis in HL-60 cells by downregulating

Keywords： nuclear factor-kappa B     Fas/FasL system     HL-60     Bay 11-7082    

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Effect of TiO

Navid Azizi, Mojgan Isanejad, Toraj Mohammadi, Reza M. Behbahani

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 517-530 doi: 10.1007/s11705-018-1781-0

Abstract: Membranes have attracted much attention as economical methods for industrial chemical processes. The effects of the titanium dioxide nanoparticle load on the morphology and CO /CH separation performance of poly (ether-block-amide) (PEBAX-1657) mixed matrix membranes (MMMs) were investigated from pressures of 3–12 bar and temperatures of 30°C–60°C. The PEBAX membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis, atomic force microscopy and tensile strength analysis. The incorporation of TiO nanoparticles into the polymeric MMMs improved the CO /CH gas separation performance (both the permeability and selectivity) of the membranes. The CO permeability and ideal CO /CH selectivity values of the nanocomposite membrane loaded with 8 wt-% TiO were 172.32 Barrer and 24.79, respectively whereas those of the neat membrane were 129.87 Barrer and 21.39, respectively.

Keywords： mixed matrix membrane     TiO2 nanoparticles     PEBAX-1657     CO2/CH4 separation    

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An investigation of reaction furnace temperatures and sulfur recovery

ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 362-371 doi: 10.1007/s11705-011-1106-z

Abstract: In a modern day sulfur recovery unit (SRU), hydrogen sulfide (H S) is converted to elemental sulfur using a modified Claus unit. A process simulator called TSWEET has been used to consider the Claus process. The effect of the H S concentration, the H S/CO ratio, the input air flow rate, the acid gas flow of the acid gas (AG) splitter and the temperature of the acid gas feed at three different oxygen concentrations (in the air input) on the main burner temperature have been studied. Also the effects of the tail gas ratio and the catalytic bed type on the sulfur recovery were studied. The bed temperatures were optimized in order to enhance the sulfur recovery for a given acid gas feed and air input. Initially when the fraction of AG splitter flow to the main burner was increased, the temperature of the main burner increased to a maximum but then decreased sharply when the flow fraction was further increased; this was true for all three concentrations of oxygen. However, if three other parameters (the concentration of H S, the ratio H S/CO and the flow rate of air) were increased, the temperature of the main burner increased monotonically. This increase had different slopes depending on the oxygen concentration in the input air. But, by increasing the temperature of the acid gas feed, the temperature of the main burner decreased. In general, the concentration of oxygen in the input air into the Claus unit had little effect on the temperature of the main burner (This is true for all parameters). The optimal catalytic bed temperature, tail gas ratio and type of catalytic bed were also determined and these conditions are a minimum temperature of 300°C, a ratio of 2.0 and a hydrolysing Claus bed.

Keywords： Claus unit     concentration of H2S     tail gas ratio     sulfur recovery     catalytic bed    

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Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 123-129 doi: 10.1007/s11705-013-1325-6

Abstract: An Al O -TiB nanocomposite was successfully synthesized by the high energy ball milling of Al, B O and TiO . The structures of the powdered particles formed at different milling times were evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Thermodynamic calculations showed that the composite formed in two steps via highly exothermic mechanically induced self-sustaining reactions (MSRs). The composite started to form at milling times of 9–10 h but the reaction was not complete. The remaining starting materials were consumed by increasing the milling time to 15 h. The XRD patterns of the annealed powders showed that aluminum borate is one of the intermediate products and that it is consumed at higher temperatures. Heat treatment of the 6-h milled sample at 1100 C led to a complete formation of the composite. Increasing the milling time to 15 h led to a refining of the crystallite sizes. A nanocomposite powder with a mean crystallite size of 35–40 nm was obtained after milling for 15 h.

Keywords： ball milling     nanocomposite     Al2O3     TiB2    

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Spray Preparation, Microstructure and Properties of Al2O3-MxO Hard -

Wang Biao,Wang Yudong,Li Huiling,Zhang Zihua

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 75-80

Abstract: carbon steel substrate, base coating of nickel-coated aluminium and intermediate coating of 50% Al2O3 + 50% Ni were prepared by means of oxyacetylene spray, and final coating of Al2O3 ～ MxOy was prepared by means of plasma spray.60% (mass) sulphuric acid with 60 % concentration, and 40% (mass) phosphoric ore powder, the Al2O3 ～ MxOy coating resistance to corrosion and wear, is 7.46 times

Keywords： Al2O3-MxOy     coating     plasma     resistance to corrosion     resistance    

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Emission components characteristics of a bi-fuel vehicle at idling condition

Sameh M. METWALLEY, Shawki A. ABOUEL-SEOUD, Abdelfattah M. FARAHAT

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 322-329 doi: 10.1007/s11708-011-0158-6

Abstract: Natural gas (NG) represents today a promising alternative to conventional fuels for road vehicles propulsion, since it is characterized by a relatively low cost, better geopolitical distribution than oil, and lower environmental impact. This explains the current spreading of compressed natural gas (CNG) fuelled spark ignition (SI) engine, above all in the bi-fuel version, which is able to run either with gasoline or with NG. However, the aim of the present investigation is to evaluate the emission characteristics at idling condition. The vehicle engine was converted to bi-fueling system from a gasoline engine, and operated separately either with gasoline or CNG. Two different fuel injection systems (i.e., multi-point injection (MPI)-sequential and closed-loop venturi-continuous) are used, and their influences on the formation of emissions at different operating conditions are examined. A detailed comparative analysis of the engine exhaust emissions using gasoline and CNG is made. The results indicate that the CNG shows low air index and lower emissions of carbon monoxide (CO), carbon dioxide (CO ), and total hydrocarbon (THC) compared to gasoline.

Keywords： road vehicle engine     fuel injection systems     carbon monoxide (CO)     carbon dioxide (CO2)     total    

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Mercury removal from aqueous solution using petal-like MoS2

Ragini Pirarath, Palani Shivashanmugam, Asad Syed, Abdallah M.

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1307-0

Abstract: Abstract • Synthesized few-layered MoS2 nanosheets via surfactant-assisted hydrothermal method. • SynthesizedMoS2 nanosheets show petal-like morphology. • Adsorbent showed 93% of mercury removal efficiency. •In this work, we synthesized few-layered MoS2 nanosheets via a surfactant-assisted hydrothermal methodThe synthesized MoS2 nanosheets showed petal-like morphology as confirmed by scanning electron microscope91% and 79% removal efficiency in the respective 2nd and 3rd cycles.

Keywords： Anionic surfactant     2D material     MoS2 nanosheets     Mercury removal     Adsorption capacity    

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CO2 capture using membrane contactors: a systematic literature review

M. Al-Salem, Achilleas Constantinou

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 720-754 doi: 10.1007/s11705-020-1992-z

Abstract: With fossil fuel being the major source of energy, CO emission levels need to be reduced to a minimal amount namely from anthropogenic sources. Energy consumption is expected to rise by 48% in the next 30 years, and global warming is becoming an alarming issue which needs to be addressed on a thorough technical basis. Nonetheless, exploring CO capture using membrane contactor technology has shown great potential to be applied and utilised by industry to deal with post- and pre-combustion of CO . A systematic review of the literature has been conducted to analyse and assess CO removal using membrane contactors for capturing techniques in industrial processes. The review began with a total of 2650 papers, which were obtained from three major databases, and then were excluded down to a final number of 525 papers following a defined set of criteria. The results showed that the use of hollow fibre membranes have demonstrated popularity, as well as the use of amine solvents for CO removal. This current systematic review in CO removal and capture is an important milestone in the synthesis of up to date research with the potential to serve as a benchmark databank for further research in similar areas of work. This study provides the first systematic enquiry in the evidence to research further sustainable methods to capture and separate CO .

Keywords： CO2 capture     preferred reporting items for systematic reviews and meta-analyses     membrane contactor    

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Inexpensive synthesis of a high-performance Fe

Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 405-416 doi: 10.1007/s11705-016-1579-x

Abstract: A sol-gel technique has been developed for the synthesis of a magnetite-silica-titania (Fe O -SiO -TiO ) tertiary nanocomposite with improved photocatalytic properties based on the use of inexpensive titania and silica precursors. The exceptional photocatalytic activity of the resulting materials was demonstrated by using them to photocatalyze the degradation of methylene blue solution. The best formulation achieved 98% methylene blue degradation. An interesting feature of the present work was the ability to magnetically separate and reuse the catalyst. The efficiency of the catalyst remained high during two reuses. The synthesized nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, ultra-violet-visible spectroscopy, diffuse reflectance spectroscopy, and thermogravimetric analysis. XRD analysis revealed the formation of multicrystalline systems of cubic magnetite and anatase titania crystals. SEM and TEM characterization revealed well-developed and homogeneously dispersed particles of size less than 15 nm. FTIR spectra confirmed the chemical interaction of titania and silica. It was further noticed that the optical properties of the prepared materials were dependent on the relative contents of their constituent metal oxides.

Keywords： sol-gel     photocatalysis     magnetic recovery     TiO2     Fe3O4     SiO2    

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Bamboo-like -doped carbon nanotubes encapsulating M(Co, Fe)-Ni alloy for electrochemical production of

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 498-510 doi: 10.1007/s11705-021-2082-6

Abstract: The electrochemical conversion of CO2-H2O into CO-H2 using renewableHerein, a series of N-doped carbon nanotubes encapsulating binary alloy nanoparticles (MxNi-NCNT, M= Fe, Co) were successfully fabricated through the co-pyrolysis of melamine andThe MxNi-NCNT samples exhibited bamboo-like nanotubular structures with a large specificon MxNi-NCNT.

Keywords： electrochemical reduction of CO2     syngas     N-doped carbon nanotubes     encapsulated alloynanoparticles     CO/H2 ratio    

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Orderly decorated nanostructural photoelectrodes with uniform spherical TiO

M. Bakhshayesh,S. S. Azadfar

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 532-540 doi: 10.1007/s11705-015-1549-8

Abstract: a novel nanostructural electrode made of 20-nm-diameter nanoparticles, which orderly decorated with 2-µm TiO particles, deposited by a new gel process.

Keywords： dye-sensitized solar cell     uniform particles     TiO2 gel process     light harvesting    

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Glucagon-like peptide-2 exhibits protective effect on hepatic ischemia-reperfusion injury in rats

Naci Topaloğlu,Adem Küçük,Şule Yıldırım,Mustafa Tekin,Havva Erdem,Mustafa Deniz

Frontiers of Medicine 2015, Volume 9, Issue 3,   Pages 368-373 doi: 10.1007/s11684-015-0403-1

Abstract:

Glucagon-like peptide-2 (GLP-2) has potent anti-inflammatory effects and protects against experimentalWe investigated the potential role of GLP-2 pretreatment on hepatic I/R injury in rats.pretreated I/R (GLP2-IR) group.Each rat in the third group was intraperitoneally administered 5 μg GLP-2 for 5 d before the procedureOur data suggested that GLP-2 pretreatment may have a protective effect on liver I/R injury.

Keywords： ischemia/reperfusion     liver     glucagon-like peptide-2     alanine aminotransferase    

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A multi-integrated approach on toxicity effects of engineered TiO

Ana PICADO,Susana M. PAIXÃO,Liliana MOITA,Luis SILVA,Mário S.

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 793-803 doi: 10.1007/s11783-015-0775-0

Abstract: The new properties of engineered nanoparticles drive the need for new knowledge on the safety, fate, behavior and biologic effects of these particles on organisms and ecosystems. Titanium dioxide nanoparticles have been used extensively for a wide range of applications, e.g, self-cleaning surface coatings, solar cells, water treatment agents, topical sunscreens. Within this scenario increased environmental exposure can be expected but data on the ecotoxicological evaluation of nanoparticles are still scarce. The main purpose of this work was the evaluation of effects of TiO nanoparticles in several organisms, covering different trophic levels, using a battery of aquatic assays. Using fish as a vertebrate model organism tissue histological and ultrastructural observations and the stress enzyme activity were also studied. TiO nanoparticles (Aeroxide® P25), two phase composition of anatase (65%) and rutile (35%) with an average particle size value of 27.6±11 nm were used. Results on the EC for the tested aquatic organisms showed toxicity for the bacteria, the algae and the crustacean, being the algae the most sensitive tested organism. The aquatic plant showed no effect on growth. The fish showed no effect on a 21 day survival test, though at a biochemical level the cytosolic Glutathione-S-Transferase total activity, in intestines, showed a general significant decrease ( <0.05) after 14 days of exposure for all tested concentrations. The presence of TiO nanoparticles aggregates were observed in the intestine lumen but their internalization by intestine cells could not be confirmed.

Keywords： ecotoxicity     enzymatic analysis     histology     transmission electron microscopy (TEM)     TiO2-nanoparticles    

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Title Author Date Type Operation

Core designing of a new type of TVS-2M FAs: neutronics and thermal-hydraulics design basis limits

Saeed GHAEMI, Farshad FAGHIHI

Journal Article

Improvement potential of today’s WEEE recycling performance: The case of LCD TVs in Belgium

Paul Vanegas, Jef R. Peeters, Dirk Cattrysse, Wim Dewulf, Joost R. Duflou

Journal Article

Inhibition of NF-kappa B can enhance Fas-mediated apoptosis in leukemia cell line HL-60

Li WANG, Shi ZHAO, Hong-Xiang WANG, Ping ZOU

Journal Article

Effect of TiO

Navid Azizi, Mojgan Isanejad, Toraj Mohammadi, Reza M. Behbahani

Journal Article

An investigation of reaction furnace temperatures and sulfur recovery

ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Journal Article

Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Journal Article

Spray Preparation, Microstructure and Properties of Al2O3-MxO Hard -

Wang Biao,Wang Yudong,Li Huiling,Zhang Zihua

Journal Article

Emission components characteristics of a bi-fuel vehicle at idling condition

Sameh M. METWALLEY, Shawki A. ABOUEL-SEOUD, Abdelfattah M. FARAHAT

Journal Article

Mercury removal from aqueous solution using petal-like MoS2

Ragini Pirarath, Palani Shivashanmugam, Asad Syed, Abdallah M.

Journal Article

CO2 capture using membrane contactors: a systematic literature review

M. Al-Salem, Achilleas Constantinou

Journal Article

Inexpensive synthesis of a high-performance Fe

Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Journal Article

Bamboo-like -doped carbon nanotubes encapsulating M(Co, Fe)-Ni alloy for electrochemical production of

Journal Article

Orderly decorated nanostructural photoelectrodes with uniform spherical TiO

M. Bakhshayesh,S. S. Azadfar

Journal Article

Glucagon-like peptide-2 exhibits protective effect on hepatic ischemia-reperfusion injury in rats

Naci Topaloğlu,Adem Küçük,Şule Yıldırım,Mustafa Tekin,Havva Erdem,Mustafa Deniz

Journal Article

A multi-integrated approach on toxicity effects of engineered TiO

Ana PICADO,Susana M. PAIXÃO,Liliana MOITA,Luis SILVA,Mário S.

Journal Article