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Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 238-245 doi: 10.1007/s11708-015-0356-8

Abstract: Nine test fuels were prepared with three antioxidants, namely, Succinimide (C H NO ), , dimethyl- -phenylenediamine-dihydrochloride(C H Cl N ), and -phenyl- -phenylenediamine (C H NHC H NH ) added to neat biodiesel at 500 parts per

Keywords： NO emission     antioxidants     Succinimide     N     N-dimethyl-p-phenylenediamine-dihydrochloride     N-phenyl-p-phenylenediamine    

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Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 94-98

Abstract: Both of the concentrations of N and P in original water and in filtered water were also be monitored.The aim of the study is to figure out the alga's influence on the concentrations of N and P in theBy taken the method of stoichiometry analysis, we find both the N∶P ratios of alga and water are notconstant, and both of them have no significant ecological stoichiometry of the N∶P ratio.We also made correlation-ship analysis between the N∶P ratio of water and biomass of alga.

Keywords： the Dianchi Lake     blue-green alga     the N∶P ratio     variation     ecological stoichiometry    

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Enhancement of distillate output of double basin solar still with vacuum tubes

Hitesh N PANCHAL, P K SHAH

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 101-109 doi: 10.1007/s11708-014-0299-5

Abstract: Experiments were conducted in climate conditions of Mehsana (23.6000° N, 72.4000° E) Gujarat from April

Keywords： double basin solar still     calcium stones     pebbles     granite gravel     distillate output    

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N2O emission from a sequencing batch reactor for biological N and P removal from wastewater

Lei SHEN,Yuntao GUAN,Guangxue WU,Xinmin ZHAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 776-783 doi: 10.1007/s11783-013-0586-0

Abstract: Nitrous oxide (N O) is a greenhouse gas that can be released during biological nitrogen removal fromN O emission from a sequencing batch reactor (SBR) for biological nitrogen and phosphorus removal fromthe aims were to examine which process, nitrification or denitrification, would contribute more to NO emission and to study the effects of heterotrophic activities on N O emission during nitrification.The ratio of N O emission to the removed ammonium nitrogen (N O-N/NH -N) was 2.5% in the SBR system with

Keywords： biological nutrient removal     denitrification     greenhouse gas     nitrification     nitrous oxide    

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Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

MARTÍNEZ-GALVÁN, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 67-80 doi: 10.1007/s11709-017-0399-5

Abstract: The new type of deep foundation for buildings on saturated, compressible-low strength clayey soil deposits, branded structural cell essentially consists of a rigid concrete top slab, structurally connected to reinforced concrete peripheral walls (diaphragms) that enclose the natural soil. Accordingly, as the initial volume of the confined soft clays within the lateral stiff diaphragms will remain constant upon loading, the hollowed structural cell will be “transformed” into a very large cross-section pillar of unit weight slightly higher than that of the natural soft clayey soil. This type of foundation seems to be a highly competitive alternative to the friction pile-box foundations (widely used in Mexico City clays), due to its economic and environmental advantages. Economies result, for example, from the absence of huge excavations hence sparing the need of earth retaining structures. Further savings result from appreciably smaller concrete volumes required for building the structural cell than the friction pile-box foundation; moreover, the construction time of the former is much shorter than that of the latter. Regarding the impact to the environment, less air contamination follows from the fact that both traffic jams and soil excavation lessen appreciably. Considering these facts and others regarding scheduling, it was decided to replace 48-friction pile-box foundations specified in the master plan project by this new type of foundation. The overall behavior of these cell foundations over a five-year period is fared from close visual observations and their leveling during the first three years after their construction.

Keywords： deep foundations     bearing capacity     resistant moment     structural cell     3D numerical modeling    

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MILP synthesis of separation processes for waste oil-in-water emulsions treatment

Zorka N. Pintarič,Gorazd P. Škof,Zdravko Kravanja

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 120-130 doi: 10.1007/s11705-016-1559-1

Abstract: This paper presents a novel synthesis method for designing integrated processes for oil-in-water (O/W) emulsions treatment. General superstructure involving alternative separation technologies is developed and modelled as a mixed integer linear programming (MILP) model for maximum annual profit. Separation processes in the superstructure are divided into three main sections of which the pretreatment and final treatment are limited to the selection of one alternative (or bypass) only, while within the intermediate section various combinations of different technologies in series can be selected. Integrated processes composed of selected separation techniques for given ranges of input chemical oxygen demand (COD) can be proposed by applying parametric analyses within the superstructure approach. This approach has been applied to an existing industrial case study for deriving optimal combinations of technologies for treating diverse oil-in-water emulsions within the range of input COD values between 1000 mg?L and 145000 mg?L . The optimal solution represents a flexible and profitable process for reducing the COD values below maximal allowable limits for discharging effluent into surface water.

Keywords： oil-in-water emulsion     chemical oxygen demand     superstructure     process synthesis     MILP    

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Ozone kinetics of dimethyl sulfide in the presence of water vapor

Haitao WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 833-835 doi: 10.1007/s11783-013-0570-8

Abstract: outdoor smog chamber was used to thorough investigate the rate constants of gas-phase reaction between dimethyl

Keywords： rate constants     ozone (O3)     dimethyl sulfide (DMS)     water vapor    

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Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution system

RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 47-56 doi: 10.1007/s11708-011-0159-5

Abstract: The advancement in power distribution system poses a great challenge to power engineering researchers on how to best monitor and estimate the state of the distribution network. This paper is executed in two stage processes. The first stage is to identify the optimal location for installation of monitoring instrument with minimal investment cost. The second stage is to estimate the bus voltage magnitude, where real time measurement is conducted and measured through identified meter location which is more essential for decision making in distribution supervisory control and data acquisition system (DSCADA). The hybrid intelligent technique is applied to execute the above two algorithms. The algorithms are tested with institute of electrical and electronics engineers (IEEE) and Tamil Nadu electricity board (TNEB) benchmark systems. The simulated results proves that the swarm tuned artificial neural network (ANN) estimator is best suited for accurate estimation of voltage with different noise levels.

Keywords： artificial intelligence     power distribution control     state estimation    

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Non-thermal plasma for exhaust gases treatment

,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Hilda FRÍAS P.

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 301-305 doi: 10.1007/s11465-015-0344-z

Abstract: <p>This article describes a study on a non-thermal plasma device to treat exhaust gases in an internalp>

Keywords： plasma treatment     NOx     CO     CO2     particulate matter     vehicle    

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Artificial versus Natural Reuse of CO2 for DME Production: Are We Any Closer?

Martín Mariano

Engineering 2017, Volume 3, Issue 2,   Pages 166-170 doi: 10.1016/J.ENG.2017.02.002

Abstract: <p>This work uses a mathematical optimization approach to analyze and compare facilities that eithercaptured CO2 in the form of lignocellulosic biomass toward the production of the same product, dimethylp>

Keywords： Solar energy     Photovoltaic     Concentrated solar power     Biomass     Water electrolysis     Dimethyl ether    

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Catalytic activity of cerium-doped Ru/AlO during ozonation of dimethyl phthalate

ZHOU Yunrui, ZHU Wanpeng, CHEN Xun

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 354-357 doi: 10.1007/s11783-008-0059-z

Abstract: In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation

Keywords： Ru–Ce/AlO     dimethyl phthalate     mineralization     comparison experiment     catalytic ozonation    

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Detection of presumed genes encoding beta-lactamases by sequence based screening of metagenomes derived from Antarctic microbial mats

Gastón Azziz, Matías Giménez, Héctor Romero, Patricia M. Valdespino-Castillo, Luisa I.Falcón, Lucas A. M. Ruberto, Walter P. Mac Cormack, Silvia Batista

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 3, doi: 10.1007/s11783-019-1128-1

Abstract: <p> <p>• Beta-lactamase genes were found in all samples from distant placesp> <p>• Class C beta-lactamase coding genes were thep> <p>• Diversity of sequences exceeds that of thep>p>

Keywords： Beta-lactamases     Antibiotic resistance coding genes     Metagenomes     Antarctic microbial mats    

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Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 330-339 doi: 10.1007/s11708-010-0121-y

Abstract: Technical and economic analysis was done for the biomass to dimethyl ether (DME) technology to promote

Keywords： technical and economic analysis     biomass     dimethyl ether     gasification/synthesis    

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Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 401-405 doi: 10.1007/s11708-008-0075-5

Abstract: Experimental investigation into the effects of different pilot amounts of dimethyl ether (DME) on the

Keywords： Experimental investigation     single-cylinder direct-injection     exhaust temperature     dimethyl     compression    

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Novel eco-efficient reactive distillation process for dimethyl carbonate production by indirect alcoholysis

Iulian Patraşcu, Costin S. Bîldea, Anton A. Kiss

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 316-331 doi: 10.1007/s11705-021-2047-9

Abstract: Dimethyl carbonate is an eco-friendly essential chemical that can be sustainably produced from CO , whichThe rapid increase in dimethyl carbonate demand is driven by the fast growth of polycarbonates, solventDimethyl carbonate can be produced from CO through various chemical pathways, but the most convenientTherefore, less equipment is required, the methanol-dimethyl carbonate azeotrope does not need to beThe energy requirement is reduced by heat integration to just 1.25 kW·h·kg dimethyl carbonate, which

Keywords： dimethyl carbonate     reactive distillation     process design     plantwide control    

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Title Author Date Type Operation

Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

Journal Article

Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Journal Article

Enhancement of distillate output of double basin solar still with vacuum tubes

Hitesh N PANCHAL, P K SHAH

Journal Article

N2O emission from a sequencing batch reactor for biological N and P removal from wastewater

Lei SHEN,Yuntao GUAN,Guangxue WU,Xinmin ZHAN

Journal Article

Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

MARTÍNEZ-GALVÁN, Miguel P. ROMO

Journal Article

MILP synthesis of separation processes for waste oil-in-water emulsions treatment

Zorka N. Pintarič,Gorazd P. Škof,Zdravko Kravanja

Journal Article

Ozone kinetics of dimethyl sulfide in the presence of water vapor

Haitao WANG

Journal Article

Intelligent algorithm for optimal meter placement and bus voltage estimation in ring main distribution system

RAMESH, N. CHAKRABORTY, S. P. CHOWDHURY

Journal Article

Non-thermal plasma for exhaust gases treatment

,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Hilda FRÍAS P.

Journal Article

Artificial versus Natural Reuse of CO2 for DME Production: Are We Any Closer?

Martín Mariano

Journal Article

Catalytic activity of cerium-doped Ru/AlO during ozonation of dimethyl phthalate

ZHOU Yunrui, ZHU Wanpeng, CHEN Xun

Journal Article

Detection of presumed genes encoding beta-lactamases by sequence based screening of metagenomes derived from Antarctic microbial mats

Gastón Azziz, Matías Giménez, Héctor Romero, Patricia M. Valdespino-Castillo, Luisa I.Falcón, Lucas A. M. Ruberto, Walter P. Mac Cormack, Silvia Batista

Journal Article

Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Journal Article

Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Journal Article

Novel eco-efficient reactive distillation process for dimethyl carbonate production by indirect alcoholysis

Iulian Patraşcu, Costin S. Bîldea, Anton A. Kiss

Journal Article