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A systemic review of hydrogen supply chain in energy transition

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 102-122 doi: 10.1007/s11708-023-0861-0

Abstract: Targeting the net-zero emission (NZE) by 2050, the hydrogen industry is drastically developing in recent years. However, the technologies of hydrogen upstream production, midstream transportation and storage, and downstream utilization are facing obstacles. In this paper, the development of hydrogen industry from the production, transportation and storage, and sustainable economic development perspectives were reviewed. The current challenges and future outlooks were summarized consequently. In the upstream, blue hydrogen is dominating the current hydrogen supply, and an implementation of carbon capture and sequestration (CCS) can raise its cost by 30%. To achieve an economic feasibility, green hydrogen needs to reduce its cost by 75% to approximately 2 /kg at the large scale. The research progress in the midterm sector is still in a preliminary stage, where experimental and theoretical investigations need to be conducted in addressing the impact of embrittlement, contamination, and flammability so that they could provide a solid support for material selection and large-scale feasibility studies. In the downstream utilization, blue hydrogen will be used in producing value-added chemicals in the short-term. Over the long-term, green hydrogen will dominate the market owing to its high energy intensity and zero carbon intensity which provides a promising option for energy storage. Technologies in the hydrogen industry require a comprehensive understanding of their economic and environmental benefits over the whole life cycle in supporting operators and policymakers.

Keywords： hydrogen production     hydrogen transportation and storage     hydrogen economy     carbon capture and sequestration    

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State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 620-630 doi: 10.1007/s11783-012-0425-8

Abstract: Despite increasing advocacy and adaptation of public-private model of water governance worldwide since the 1990s, today only 5% of the world’s population is served by water utilities with private involvement. The present article examines the experience of the water sector in Armenia with private sector participation. The study describes the process of the introduction of public-private partnerships in the water sector and focuses on analyzing the impact of privatization on water utility performance. The analysis employs the partial indicator method for evaluating the impacts in relation to operational, finance, and environmental performance, done by drawing on the database for the five water companies in Armenia. The empirical evidence shows that private participation in general led to improved overall performance. In particular, private involvement resulted in increased operational efficiency in terms of labor productivity, water metering, continuity of service, and revenue collection efficiency. There were mixed improvements in the operating cost coverage ratio. As for environmental performance, there were gains in the reduction of residential water consumption, accompanied, however, by an increase in non-revenue water.

Keywords： water governance     water privatization     public-private partnership     operational efficiency     Armenia     transitioneconomy    

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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 transitionperformance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transitiontemperatures, and widening transition temperature spans, which indicate that further progress can be

Keywords： phase transition regulation     caloric effect     solid state refrigeration    

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Real atom economy and its application for evaluation the green degree of a process

Weihan WANG, Jing Lü, Li ZHANG, Zhenhua LI

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 349-354 doi: 10.1007/s11705-010-1030-7

Abstract: Among the 12 principles of green chemistry, only atom economy and E factor can be expressed quantitativelyAtom economy was thought better than the traditional yield for evaluating the atom efficiency of rawIn this paper, we proposed the concept of real atom economy (RAE) as a metric.

Keywords： green chemistry     real atom economy     E factor     atom economy     yield    

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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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A perspective of “Nuclear Hot Spring” for long-term sustainable economy of the world

Yingzhong LU

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 349-357 doi: 10.1007/s11708-011-0168-4

Abstract: The rapid growth of human economy in the late 20th century gave rise to great concern over sustainabilityA pessimistic “Full World Model” forecasts that human economy could not develop further.

Keywords： natural safety reactor     full power natural circulation     sustainable world economy    

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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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Carbon performance evaluation model from the perspective of circular economy—The case of Chinese thermal

Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI

Frontiers of Engineering Management 2022, Volume 9, Issue 2,   Pages 297-311 doi: 10.1007/s42524-020-0143-z

Abstract: resource (energy) input, cycle, output, and carbon management by incorporating the principles of circular economy

Keywords： circular economy     carbon performance     comprehensive evaluation     thermal power enterprise    

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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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HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 153-154 doi: 10.15302/J-FASE-2023497

Abstract: HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Keywords： CARBON     ISSUE     NEUTRALITY     HIGHLIGHTS     AGRICULTURE    

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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 transitionincluding 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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Title Author Date Type Operation

A systemic review of hydrogen supply chain in energy transition

Journal Article

State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Journal Article

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

Yun Zhang, Robert A. Weinberg

Journal Article

Phase transition regulation and caloric effect

Journal Article

Real atom economy and its application for evaluation the green degree of a process

Weihan WANG, Jing Lü, Li ZHANG, Zhenhua LI

Journal Article

Energy transition management towards a low-carbon world

Journal Article

Smart oilfield development and transition of petroleum-based cities

He LIU, Xinhua MA

Journal Article

A perspective of “Nuclear Hot Spring” for long-term sustainable economy of the world

Yingzhong LU

Journal Article

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

Journal Article

Carbon performance evaluation model from the perspective of circular economy—The case of Chinese thermal

Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI

Journal Article

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

Journal Article

HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

Journal Article

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

Motoi YAMASHITA

Journal Article

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

Journal Article

Special issue: Transition management of energy systems towards carbon neutrality

Journal Article