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Bio-based Technologies for Resource Recovery

Aijie Wang, David Stuckey

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1079-y

Abstract:

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Highlights in agri-product quality and safety

Guanghong ZHOU

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 289-290 doi: 10.15302/J-FASE-2018236

Abstract:

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The advances of Sino-German new materials

Rongbiao Wang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 327-328 doi: 10.1007/s11705-018-1748-1

Abstract:

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Technical innovation for Sanyang Road Cross-river Tunnel Project

Yu ZHONG

Frontiers of Engineering Management 2018, Volume 5, Issue 3,   Pages 411-415 doi: 10.15302/J-FEM-2018206

Abstract:

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Comments on the special issue on Agri-product Quality and Safety

Charles F. SHOEMAKER

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 294-294 doi: 10.15302/J-FASE-2018237

Abstract:

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Post-exascale supercomputing: research opportunities abound Editorial

Zuo-ning CHEN, Jack DONGARRA, Zhi-wei XU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 10,   Pages 1203-1208 doi: 10.1631/FITEE.1830000

Abstract:

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Systems thinking in construction: Improving the productivity and performance of infrastructure projects

Peter E.D. LOVE, Hanbin LUO

Frontiers of Engineering Management 2018, Volume 5, Issue 3,   Pages 285-288 doi: 10.15302/J-FEM-2018205

Abstract:

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Responding to the Paris Climate Agreement: global climate change mitigation efforts

Yong GENG, Tsuyoshi FUJITA, Anthony CHIU, Hancheng DAI, Han HAO

Frontiers in Energy 2018, Volume 12, Issue 3,   Pages 333-337 doi: 10.1007/s11708-018-0587-6

Abstract:

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Future-proofing ‘Next Generation’ infrastructure assets

Peter E.D. LOVE, Lavagnon A. IKA, Giorgio LOCATELLI, Dominic D. AHIAGA-DAGBUI

Frontiers of Engineering Management 2018, Volume 5, Issue 3,   Pages 407-410 doi: 10.15302/J-FEM-2018204

Abstract:

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Clean Power Technology

Robin J. Batterham

Engineering 2020, Volume 6, Issue 12,   Pages 1349-1350 doi: 10.1016/j.eng.2020.10.004

Measurement and correlation of supercritical CO

Hiroshi MACHIDA, Ryosuke TAGUCHI, Yoshiyuki SATO, Louw J. FLOURUSSE, Cor J. PETERS, Richard L. SMITH

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 12-19 doi: 10.1007/s11705-009-0151-3

Abstract: Ionicliquids combined with supercritical fluid technology hold great promise as working solvents for developing compact processes. Ionic liquids, which are organic molten salts, typically have extremely low volatility and high functionality, but possess high viscosities, surface tensions and low diffusion coefficients, which can limit their applicability. CO , on the other hand, especially in its supercritical state, is a green solvent that can be used advantageously when combined with the ionic liquid to provide viscosity and surface tension reduction and to promote mass transfer. The solubility of CO in the ionic liquid is key to estimating the important physical properties that include partition coefficients, viscosities, densities, interfacial tensions, thermal conductivities and heat capacities needed in contactor design. In this work, we examine a subset of available high pressure pure component ionic liquid PVT data and high pressure CO - ionic liquid solubility data and report new correlations for CO -ionic liquid systems with equations of state that have some industrial applications including: (1) general, (2) fuel desulfurization, (3) CO capture, and (4) chiral separation. New measurements of solubility data for the CO and 1-butyl-3-methylimidazolium octyl sulfate, [bmim][OcSO ] system are reported and correlated. In the correlation of the CO ionic liquid phase behavior, the Peng-Robinson and the Sanchez-Lacombe equations of state were considered and are compared. It is shown that excellent correlation of CO solubility can be obtained with either equation and they share some common characteristics regarding interaction parameters. In the Sanchez-Lacombe equation, parameters that are derived from the supercritical region were found to be important for obtaining good correlation of the CO -ionic liquid solubility data.

Keywords: compact processes     chiral ionic liquids     separations     thermodynamic properties     equations of state    

Merits and limitations of TiO

Yu Yang, Hassan Javed, Danning Zhang, Deyi Li, Roopa Kamath, Kevin McVey, Kanwartej Sra, Pedro J.J.

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 387-394 doi: 10.1007/s11705-017-1657-8

Abstract: Heavy hydrocarbons (HHCs) in soils impacted by crude oil spills are generally recalcitrant to biodegradation due to their low bioavailability and complex chemical structure. In this study, soils were pretreated with varying concentrations of ultraviolet radiation A (UVA) or ultraviolet radiation C (UVC) activated titanium dioxide (TiO ) (1%–5%) under varying moisture conditions (0%–300% water holding capacity (WHC)) to enhance biodegradation of HCCs and shorten remediation timeframes. We demonstrate that pretreatment of impacted soils with UVC-activated TiO in soil slurries could enhance bioremediation of HHCs. ?Total petroleum hydrocarbon (TPH) removal after 24 h exposure to UVC (254 nm and 4.8 mW/cm ) was (19.1±1.6)% in slurries with 300% WHC and 5 wt-% TiO . TPH removal was non-selective in the C15-C36 range and increased with moisture content and TiO concentration. In a 10-d bioremediation test, TPH removal in treated soil increased to (26.0±0.9)%, compared to (15.4±0.8)% for controls without photocatalytic pre-treatment. Enhanced biodegradation was also confirmed by respirometry. This suggests that addition of UVC-activated TiO to soil slurries can transform recalcitrant hydrocarbons into more bioavailable and biodegradable byproducts and increase the rate of subsequent biodegradation. However, similar results were not observed for soils pretreated with UVA activated TiO . This suggests that activation of TiO by sunlight and direct addition of TiO to unsaturated soils within landfarming setting may not be a feasible approach. Nevertheless, less than 1% of UVA (7.5 mW/cm ) or UVC (1.4 mW/cm ) penetrated beyond 0.3 cm soil depth, indicating that limited light penetration through soil would hinder the ability of TiO to enhance soil bioremediation under land farming conditions.

Keywords: TiO2 pretreatment     bioremediation     total petroleum hydrocarbons     ultraviolet    

Ribozyme and the mechanisms that underlie RNA catalysis

Timothy J. Wilson,Yijin Liu,David M. J. Lilley

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 178-185 doi: 10.1007/s11705-016-1558-2

Abstract: Ribozymes are widespread, and catalyze some extremely important reactions in the cell. Mechanistically most fall into one of two classes, using either metal ions or general acid-base catalysis. The nucleolytic ribozymes fall into the latter class, mostly using nucleobases. A sub-set of these use a combination of guanine base plus adenine acid to catalyze the cleavage reaction. New ribozymes are still being discovered at regular intervals and we can speculate on the potential existence of ribozymes that catalyze chemistry beyond phosphoryl transfer reactions, perhaps using small-molecule coenzymes.

Keywords: RNA catalysis     RNA structure     catalytic mechanism    

Thermal Treatment of Hydrocarbon-Impacted Soils: A Review of Technology Innovation for Sustainable Remediation

Masiello, Gabriel Sabadell, Pedro J. J. Alvarez

Engineering 2016, Volume 2, Issue 4,   Pages 426-437 doi: 10.1016/J.ENG.2016.04.005

Abstract:

Thermal treatment technologies hold an important niche in the remediation of hydrocarbon-contaminated soils and sediments due to their ability to quickly and reliably meet cleanup standards. However, sustained high temperature can be energy intensive and can damage soil properties. Despite the broad applicability and prevalence of thermal remediation, little work has been done to improve the environmental compatibility and sustainability of these technologies. We review several common thermal treatment technologies for hydrocarbon-contaminated soils, assess their potential environmental impacts, and propose frameworks for sustainable and low-impact deployment based on a holistic consideration of energy and water requirements, ecosystem ecology, and soil science. There is no universally appropriate thermal treatment technology. Rather, the appropriate choice depends on the contamination scenario (including the type of hydrocarbons present) and on site-specific considerations such as soil properties, water availability, and the heat sensitivity of contaminated soils. Overall, the convergence of treatment process engineering with soil science, ecosystem ecology, and plant biology research is essential to fill critical knowledge gaps and improve both the removal efficiency and sustainability of thermal technologies.

Keywords: Soil decomposition     Land reclamation     Incineration     Pyrolysis     Desorption    

Aseismic smart building isolation systems under multi-level earthquake excitations: Part I, conceptual design and nonlinear analysis

Min-Ho CHEY,J. Geoffrey CHASE,John B. MANDER,Athol J. CARR

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 3,   Pages 286-296 doi: 10.1007/s11709-015-0307-9

Abstract: As a novel structural control strategy, tuned mass damper (TMD) inspired passive and semi-active smart building isolation systems are suggested to reduce structural response and thus mitigate structural damage due to earthquake excitations. The isolated structure’s upper stories can be utilized as a large scaled TMD, and the isolation layer, as a core design point, between the separated upper and lower stories entails the insertion of rubber bearings and (i) viscous dampers (passive) or (ii) resettable devices (semi-active). The seismic performance of the suggested isolation systems are investigated for 12-story reinforced concrete moment resisting frames modeled as “10+ 2” stories and “8+ 4” stories. Passive viscous damper or semi-active resettable devices are parametrically evaluated through the optimal design principle of a large mass ratio TMD. Statistical performance metrics are presented for 30 earthquake records from the three suites of the SAC project. Based on nonlinear structural models, including P-delta effects and modified Takeda hysteresis, the inelastic time history analyses are conducted to compute the seismic performances across a wide range of seismic hazard intensities. Results show that semi-active smart building isolation systems can effectively manage seismic response for multi-degree-of freedom (MDOF) systems across a broader range of ground motions in comparison to uncontrolled case and passive solution.

Keywords: tuned mass damper     smart building isolation     resettable device     non-linear     statistical assessment    

Title Author Date Type Operation

Bio-based Technologies for Resource Recovery

Aijie Wang, David Stuckey

Journal Article

Highlights in agri-product quality and safety

Guanghong ZHOU

Journal Article

The advances of Sino-German new materials

Rongbiao Wang

Journal Article

Technical innovation for Sanyang Road Cross-river Tunnel Project

Yu ZHONG

Journal Article

Comments on the special issue on Agri-product Quality and Safety

Charles F. SHOEMAKER

Journal Article

Post-exascale supercomputing: research opportunities abound

Zuo-ning CHEN, Jack DONGARRA, Zhi-wei XU

Journal Article

Systems thinking in construction: Improving the productivity and performance of infrastructure projects

Peter E.D. LOVE, Hanbin LUO

Journal Article

Responding to the Paris Climate Agreement: global climate change mitigation efforts

Yong GENG, Tsuyoshi FUJITA, Anthony CHIU, Hancheng DAI, Han HAO

Journal Article

Future-proofing ‘Next Generation’ infrastructure assets

Peter E.D. LOVE, Lavagnon A. IKA, Giorgio LOCATELLI, Dominic D. AHIAGA-DAGBUI

Journal Article

Clean Power Technology

Robin J. Batterham

Journal Article

Measurement and correlation of supercritical CO

Hiroshi MACHIDA, Ryosuke TAGUCHI, Yoshiyuki SATO, Louw J. FLOURUSSE, Cor J. PETERS, Richard L. SMITH

Journal Article

Merits and limitations of TiO

Yu Yang, Hassan Javed, Danning Zhang, Deyi Li, Roopa Kamath, Kevin McVey, Kanwartej Sra, Pedro J.J.

Journal Article

Ribozyme and the mechanisms that underlie RNA catalysis

Timothy J. Wilson,Yijin Liu,David M. J. Lilley

Journal Article

Thermal Treatment of Hydrocarbon-Impacted Soils: A Review of Technology Innovation for Sustainable Remediation

Masiello, Gabriel Sabadell, Pedro J. J. Alvarez

Journal Article

Aseismic smart building isolation systems under multi-level earthquake excitations: Part I, conceptual design and nonlinear analysis

Min-Ho CHEY,J. Geoffrey CHASE,John B. MANDER,Athol J. CARR

Journal Article