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Effects of fiber curvature on the microstructure of the interfacial transition zone in fresh concrete

CHEN Huisu, SUN Wei, ZHAO Qingxin, L. J. Sluys, P. Stroeven

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1, Pages 99-106 doi: 10.1007/s11709-007-0010-6

Abstract: The study on the interfacial transition zone (ITZ) of concrete has received lots of attention in the

Keywords： diameter initial microstructure influence surface spherical particle

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China’s Energy Transition Pathway in a Carbon Neutral Vision Article

Shu Zhang, Wenying Chen

Engineering 2022, Volume 14, Issue 7, Pages 64-76 doi: 10.1016/j.eng.2021.09.004

Abstract: The energy transition will bring sustained air quality improvement, with an 85% reduction in local airquality sooner, reducing cumulative CO₂ emissions, and buying more time for other sectors to transition

Keywords： Carbon neutrality Energy transition Climate change mitigation China TIMES model Synergistic effects

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Effects of two transition metal sulfate salts on secondary organic aerosol formation in toluene/NO

Biwu CHU, Jiming HAO, Junhua LI, Hideto TAKEKAWA, Kun WANG, Jingkun JIANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1, Pages 1-9 doi: 10.1007/s11783-012-0476-x

Abstract: In this study, we tested the effects of two transition metal sulfate salts, manganese sulfate (MnSO )By comparing photochemical reaction products of experiments with and without transition metal sulfateseed aerosols, we evaluated the effects of transition metal sulfate seed aerosols on toluene consumptionMnSO and ZnSO seed aerosols were found to have similar effects on photochemical reactions, both enhancethe SOA production, while showing negligible effects on the gas phase compounds.

Keywords： manganese sulfate zinc sulfate seed aerosols toluene photooxidation secondary organic aerosol

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Epithelial-to-mesenchymal transition in cancer: complexity and opportunities

Yun Zhang, Robert A. Weinberg

Frontiers of Medicine 2018, Volume 12, Issue 4, Pages 361-373 doi: 10.1007/s11684-018-0656-6

Abstract:

The cell-biological program termed the epithelial-to-mesenchymal transition (EMT) plays an important

Keywords： epithelial-to-mesenchymal transition cancer metastasis cancer stem cell

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Phase transition regulation and caloric effect

Frontiers in Energy 2023, Volume 17, Issue 4, Pages 463-477 doi: 10.1007/s11708-023-0860-1

Abstract: worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transitionapply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperaturemagnetocaloric effect found new phonon evolution mechanisms, calling for more attention on multicaloric effects

Keywords： phase transition regulation caloric effect solid state refrigeration

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Energy transition management towards a low-carbon world

Frontiers of Engineering Management 2022, Volume 9, Issue 3, Pages 499-503 doi: 10.1007/s42524-022-0201-9

Keywords： energy transition low-carbon technology system modeling transition path emission reduction

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Smart oilfield development and transition of petroleum-based cities

He LIU, Xinhua MA

Frontiers of Engineering Management 2019, Volume 6, Issue 2, Pages 299-301 doi: 10.1007/s42524-019-0024-5

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Energy transition toward carbon-neutrality in China: Pathways, implications and uncertainties

Frontiers of Engineering Management 2023, Volume 10, Issue 2, Pages 358-372 doi: 10.1007/s42524-022-0202-8

Abstract: Achieving carbon neutrality in China before 2060 requires a radical energy transition.To identify the possible transition pathways of China’s energy system, this study presents a scenario-basedThe assessment of the relationship between the energy transition and energy return on investment (EROI) reveals that energy transition may decrease the EROI, which would trigger increased energy investmentThe results also indicate the need for backup capacities to enhance the energy security during the transition

Keywords： carbon neutrality energy transition uncertainty EROI LEAP

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Policy entry points for facilitating a transition towards a low-carbon electricity future

Frontiers of Engineering Management Pages 462-472 doi: 10.1007/s42524-022-0214-4

Abstract: This study extends the ambit of the debate on electricity transition by specifically identifying possibletransformative and enduring changes can be made in the electricity and socio–economic systems to facilitate the transitionGuided by the “essence” of the multi-level perspective — a prominent framework for the study of energy transitionphase-out on coal mining regions in terms of economic development and jobs; and 4) facilitating a shift in transition

Keywords： electricity transition multi-level perspective policy entry points

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Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonal

Motoi YAMASHITA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2, Pages 125-134 doi: 10.1007/s11705-009-0001-3

Abstract: The kinetic roughening transition occurs around 85°C.

Keywords： isotactic polybutene-1 tetragonal phase (form Ⅱ) melt crystallization growth rate kinetic roughening morphology

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Microwave-induced high-energy sites and targeted energy transition promising for efficient energy deployment

Frontiers in Energy 2022, Volume 16, Issue 6, Pages 931-942 doi: 10.1007/s11708-021-0771-y

Abstract: In this study, a high-energy-site phenomenon and targeted-energy transition mechanism were identifiedEnergy efficiency was thereby greatly improved in the electricity-microwaves-effective heat transitionhigh-energy site phenomenon which could induce further processes or reactions enhancement by coupling effectsincluding microwave energy concentration and intense site-energy release, shapes a targeted-energy transitionThe microwave-induced high-energy sites and targeted energy transition provide an important pathway for

Keywords： microwave discharge high-energy sites targeted-energy transition morphology design energy efficiency

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Special issue: Transition management of energy systems towards carbon neutrality

Frontiers of Engineering Management 2022, Volume 9, Issue 3, Pages 355-357 doi: 10.1007/s42524-022-0219-z

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On Social-technical Control of Safety Development in Economic Transition Background

Xue-qiu He,Song Li

Frontiers of Engineering Management 2015, Volume 2, Issue 3, Pages 234-240 doi: 10.15302/J-FEM-2015025

Abstract: Industrial safety and economic growth, two vital and inextricable forces affecting national culture and development, are worthy of much more interest and attention than this article can hope to generate. Following economic growth, industrial safety remains as a high priority in this nation’s quest for sustainable development. At present, while China is on its way to transforming its economic structure and growth models, talk of industrial safety appears with special regularity, for it also is undergoing profound changes as an important facet of modern China.

Keywords： safety development economic growth economic transition social-technical control

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The energy rattrap and transition of China

Shi Yuanchun

Strategic Study of CAE 2009, Volume 11, Issue 11, Pages 4-12

Abstract: Nowadays, energy transition is a worldwide trend, including China.rural economy, thus it should be regarded as the foremost area of tapping renewable energy and energy transition

Keywords： China energy rattrap transition

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Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0914-x

Abstract: Manganese and chromium oxides promote the NH -SCR activity of Zr-Ce mixed oxide. Cr-Zr-Ce mixed oxide exhibited>80% NO conversion at a wide temperature window. More acid sites and higher reducibility may responsible for the high SCR ability. Chromium oxide and manganese oxide promoted ZrO -CeO catalysts were prepared by a homogeneous precipitation method for the selective catalytic reduction of NO with NH . A series of characterization including X-ray diffraction (XRD), high-resolution transmission electron microscope (HR-TEM), Brunauer–Emmett–Teller (BET) surface area analysis, H temperature-programmed reduction (H -TPR), and X-ray photoelectron spectroscopy (XPS) were used to evaluate the influence of the physicochemical properties on NH -SCR activity. Cr-Zr-Ce and Mn-Zr-Ce catalysts are much more active than ZrO -CeO binary oxide for the low temperature NH -SCR, mainly because of the high specific surface area, more surface oxygen species, improved reducibility derived from synergistic effect among different elements. Mn-Zr-Ce catalyst exhibited high tolerance to SO and H O. Cr-Zr-Ce mixed oxide exhibited>80% NO conversion at a wide temperature window of 100°C–300°C. DRIFT studies showed that the addition of Cr is beneficial to the formation of Bronsted acid sites and prevents the formation of stable nitrate species because of the presence of Cr . The present mixed oxide can be a candidate for the low temperature abatement of NO .

Keywords： NH₃-selective catalytic reduction NO_x Low temperature Cr-Zr-Ce