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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 theconstant, 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.P ratio of water.

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

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Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1522-y

Abstract: <p>• Simultaneous C & N removal in Methammox occurs at wide C:N ratio.

Keywords： Methanogens     Biological Nitrogen Removal (BNR)     Simultaneous     Methammox     C:N ratio    

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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 NThe ratio of N O emission to the removed ammonium nitrogen (N O-N/NH -N) was 2.5% in the SBR system withhigh heterotrophic activities, while this ratio was in the range from 0.14% to 1.06% in batch nitrification

Keywords： biological nutrient removal     denitrification     greenhouse gas     nitrification     nitrous oxide    

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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: antioxidants, namely, Succinimide (C H NO ), , dimethyl- -phenylenediamine-dihydrochloride (C H Cl N

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

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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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Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1047-6

Abstract: <p> <p>MABR exhibits excellent TN removal performance for treating ROC withlow C/N ratio.p> <p>Operating conditions should be properly controlledp> <p>The TN removal rate remains over 70% when thep>p>

Keywords： Membrane-aerated biofilm reactor (MABR)     Salinity     Total nitrogen     Reverse osmosis concentrate    

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The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1366-2

Abstract: <p>•Bacterially-mediated coupled N and Fe processes examined in incubation

Keywords： Denitrification     N2O emission     Fe(II) oxidation     Fe/N ratio     Fe minerals    

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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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Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1318-x

Abstract: . • Extra NH4+-N from SFL was removed by anammox in anoxic phase. • Nitrogen removal efficiency of 92.51%was achieved in municipal wastewater. • The novel system could efficiently treat low COD/N municipalBiological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wastedReal municipal wastewater with a low C/N ratio of 2.8–3.4 was treated in a sequencing batch reactor (

Keywords： Sludge fermentation liquid     Municipal wastewater     Advanced nitrogen removal     Short-cut nitrification     Partial anammox    

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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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Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1095-6

Abstract: <p> <p>COD/N at low ratios (0–0.82) improved N removals of CANON.p> <p>CANON performance decreased after COD/N up towith increasing COD/N.increased with increasing COD/N.p>p>

Keywords： CANON process     COD/N ratio     Anammox     Ammonia oxidizing bacteria     Aerobic heterotrophic bacteria    

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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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Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method

Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 242-249 doi: 10.1007/s11465-016-0397-7

Abstract: <p>Laser hot wire cladding, with the prominent features of low heat input, high energy efficiency, andIn this work, volumetric defect ratio was proposed as the criterion to describe the integrity of formingsub>f), and wire current (I), were optimized based on the analysis of signal-to-noise (S/N)ratio.p>

Keywords： process optimization     Taguchi method     signal-to-noise (S/N) ratio     volumetric defect ratio     laser hot wire    

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Title Author Date Type Operation

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

Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

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

Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

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

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Journal Article

The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

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

Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

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

Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

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

Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method

Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG

Journal Article