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Optimal Scheduling of Variable-pressure Variable-flow Operation of Inverter-drive Pumps Connected in

Li Hongbin,Zhang Chenghui,Song Jun

Strategic Study of CAE 2001, Volume 3, Issue 9, Pages 52-57

Abstract: optimal scheduling modeling problem of variable-pressure variable-flow operation of inverter-drive pumpsIn the common method, the objective function is the shaft horsepower of the pumps and the constrainedconditions are water supply target and high-efficiency area of pumps.needed flow when satisfying the lift target and the constrained conditions are high-efficiency areas of pumps

Keywords： optimal scheduling nonlinear bounded programming speed regulation of pumps

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Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-021-0671-1

Abstract: The axial piston pumps in aerospace applications are often characterized by high-speed rotation to achieveThe churning losses deserve much attention at the design stage of high-speed axial piston pumps, butThe presented analytical model provides practical guidelines for reducing the churning losses in high-speedaxial piston pumps or motors.

Keywords： axial piston pump rotating parts high rotational speed churning losses drag torque

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Fault diagnosis of axial piston pumps with multi-sensor data and convolutional neural network

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0692-4

Abstract: Axial piston pumps have wide applications in hydraulic systems for power transmission.and discharge pressure signals are two common signals used for the fault diagnosis of axial piston pumpspaper presents an end-to-end multi-sensor data fusion method for the fault diagnosis of axial piston pumpsthat the proposed multi-sensor data fusion method greatly improves the fault diagnosis of axial piston pumps

Keywords： axial piston pump fault diagnosis convolutional neural network multi-sensor data fusion

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As Planet Warms, Heat Pumps Get Hotter

Chris Palmer

Engineering 2023, Volume 29, Issue 10, Pages 2-4 doi: 10.1016/j.eng.2023.08.004

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Moving policy and regulation forward for single-use plastic alternatives

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-021-1423-5

Abstract: Single-use plastics are often used once or cannot be reused for extended periods. They are widely consumed with the rapid development of social economy. The waste generated by single-use plastics threatens ecosystem health by entering the environment and ultimately restricts sustainable human development. The innovation of sustainable and environmentally friendly single-use plastic alternative materials and the joint participation of governments, enterprises and the public are promising technologies and management approaches that can solve the problem of single-use plastics wastes. The development of single-use plastic alternative products can be promoted fundamentally only by improving relevant legislation and standards, providing differentiated industrial policies, encouraging scientific and technological innovation and expanding public participation.

Keywords： Single-use plastic alternatives Policy Regulation Sustainable development

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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: Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacing vapor-compression refrigeration. Numerous methods have been proposed to optimize the refrigeration properties of caloric materials, of which single field tuning as a relatively simple way has been systemically studied. However, single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis. Because of the shortcomings of the caloric effect driven by a single field, multifield tuning on multicaloric materials that have a coupling between different ferro-orders came into view. This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperature spans, which indicate that further progress can be made in the application of this method. Furthermore, research on the sign of lattice and spin contributions to the magnetocaloric effect found new phonon evolution mechanisms, calling for more attention on multicaloric effects. Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief.

Keywords： phase transition regulation caloric effect solid state refrigeration

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The function and regulation of OTU deubiquitinases

Jiansen Du, Lin Fu, Yingli Sui, Lingqiang Zhang

Frontiers of Medicine 2020, Volume 14, Issue 5, Pages 542-563 doi: 10.1007/s11684-019-0734-4

Abstract: character, structure and function of OTUs, such as the substrate specificity and catalytic activity regulation

Keywords： ubiquitin OTU deubiquitinases structure function regulation

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The research and application of large power roadheader

Zhang Lansheng,Wei Jingsheng,Yang Yang,Song Yuehui

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 50-58

Abstract: as heavy rocky roadway roadhead in the overall design, high reliability component design, stepless speed

Keywords： rock roadway roadhead overall design technology stepless speed regulation full remote control intelligent

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RECENT ADVANCES IN THE REGULATION OF CLIMACTERIC FRUIT RIPENING: HORMONE, TRANSCRIPTION FACTOR AND EPIGENETIC

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 2,

Abstract: factors such as transcription factors (TFs) and epigenetic modifications also play vital role in the regulation

Keywords： climacteric fruit ripening / phytohormones / TFs / epigenetic modifications

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Long-term adaptive evolution of

Yong Xiao, Changye Xiao, Feng Zhao

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1182-8

Abstract: Gene mutations mainly related to efflux pumps and transporters.functions, and the gene mutations related to integral components of the membrane, including efflux pumps

Keywords： Environmental biotechnology Acclimation Chromate resistance Efflux pumps Detoxification

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Molecular regulation and genetic improvement of seed oil content in

Wei HUA,Jing LIU,Hanzhong WANG

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 3, Pages 186-194 doi: 10.15302/J-FASE-2016107

Abstract: In this review, we present current progress in understanding of the regulation of oil content in , includinggenetics, biosynthesis pathway, transcriptional regulation, maternal effects and QTL analysis.

Keywords： breeding maternal effects oilseed rape QTL

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Regulation of exogenous bFGF gene mediated by recombinant adeno-associated virus

Ke SONG, Nianjing RAO, Meiling CHEN, Yingguang CAO

Frontiers of Medicine 2009, Volume 3, Issue 2, Pages 158-163 doi: 10.1007/s11684-009-0042-5

Abstract: The regulatory effect of basic fibroblast growth factor (bFGF) mediated by recombinant adeno-associated virus (AAV) was investigated. Recombinant plasmid pAAV-S3-bFGF, and pSVneo were co-transfected into BHK-21 cells, then the recombinant AAV genome was replicated and packaged with the helper virus HSV1-rc/ΔUL2. The titer of the recombinant rAAV2-tet-off-bFGF was determined by dot-blot assay. MC3T3-E1 cells were infected with rAAV2-tet-off-bFGF. Regulatory effects of Doxycycline (Dox) on bFGF and osteogenic factors were assayed quantitatively by real-time reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. The physical particle titer of rAAV2-tet-off-bFGF successfully constructed was 1.8×10 vector genomes/mL, and the virus could infect MC3T3-E1 cells effectively. In MC3T3-E1 cells treated with Dox, the expression levels of exogenous bFGF and osteogenic factors declined to varying degrees. It was concluded that rAAV2-tet-off-bFGF could infect MC3T3 cells efficiently, and this recombinant system could be regulated successfully by Dox .

Keywords： tetracycline regulatory system adeno-associated virus basic fibroblast growth factor gene regulation

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Robust energy-efficient train speed profile optimization in a scenario-based position–time–speed network

Frontiers of Engineering Management 2021, Volume 8, Issue 4, Pages 595-614 doi: 10.1007/s42524-021-0173-1

Abstract: Train speed profile optimization is an efficient approach to reducing energy consumption in urban railassume deterministic parameters as model inputs, this paper proposes a robust energy-efficient train speedSpecifically, we first construct a scenario-based position–time–speed (PTS) network by considering resistanceThen, a percentile reliability model is proposed to generate a robust train speed profile, by which theeffectiveness of the model and analyze the influences of parameter uncertainties on the generated train speed

Keywords： robust train speed profile percentile reliability model scenario-based position–time–speed network

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RECENT ADVANCES IN THE REGULATION OF CLIMACTERIC FRUIT RIPENING: HORMONE, TRANSCRIPTION FACTOR AND EPIGENETIC

Yinglin JI, Mingyang XU, Aide WANG

Frontiers of Agricultural Science and Engineering Pages 314-334 doi: 10.15302/J-FASE-2021386

Abstract: factors such as transcription factors (TFs) and epigenetic modifications also play vital role in the regulation

Keywords： climacteric fruit ripening phytohormones TFs epigenetic modifications

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Value and governance of high-speed railway

Xiaoyan LIN, Zehua ZHANG, Meng WANG

Frontiers of Engineering Management 2017, Volume 4, Issue 4, Pages 463-482 doi: 10.15302/J-FEM-2017054

Abstract: This paper considers multiple perspectives to explore the concept of high-speed railway (HSR), rationallyThis paper analyzes the governance potential of major countries in the high-speed railway value chainand studies the feasible ways and development strategies to enhance the high-speed railway governanceSecond, the high-speed railway standard output has become the core competitiveness that embodies high-speedThird, the global high-speed railway market presents a hierarchical high-speed railway governance model

Keywords： high-speed railway value communication value high-speed railway value governance governance path upgrade