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Relationship between expression of hepatocyte grow factor and apoptosis of trophoblasts in hypertensive

OUYANG Shan, ZHANG Qinghua, QIAO Fuyuan

Frontiers of Medicine 2007, Volume 1, Issue 4,   Pages 386-389 doi: 10.1007/s11684-007-0075-6

Abstract: pregnant women and those with hypertensive disorder complicating pregnancy (HDCP), and elucidate the possiblerelationship between HGF and apoptosis of trophoblasts.

Keywords： pregnancy     concentration     possible relationship     responsible     hepatocyte    

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Layered alkali titanates (ATiO): possible uses for energy/environment issues

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 631-655 doi: 10.1007/s11708-021-0776-6

Abstract: These possible materials design made layered alkali titanates promising for energy (including catalysis

Keywords： layered alkali titanates     photocatalysis     hydrogen evdution     metal ions collection    

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Antioxidative potential of metformin: Possible protective mechanism against generating OH radicals

Huibin Guo, Ning Wang, Xiang Li

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1313-2

Abstract: Abstract • Metformin consumes O2−• and OH• induced by PM are proposed. • OH• dominated the oxidation of metformin compared with O2−• • Metformin can prevent the harm of ROS induced by PM to human health. • Antioxidative potential of metformin was first proposed to provide measures. Exposure to particulate matter (PM) can lead to the excessive accumulation of reactive oxygen species (ROS), which causes oxidative stress and endangers human health. In this study, the effects of metformin on PM-induced radicals were investigated, and the antioxidation reaction mechanism of metformin was analyzed by the density functional theory (DFT) method. The corresponding results revealed that the consumption rate of dithiothreitol (DTT) increased as the metformin concentration (0–40 mmol/L) increased under exposure to PM active components. Moreover, the OH radical content decreased as the metformin concentration increased. This result may be related to the consumption of PM-induced OH radicals by metformin, which promotes the DTT consumption rate. Additionally, because the initiation reaction has a high barrier, the oxidation reaction rate between metformin and •O2− is not very fast, although various catalysts may be present in the human environment. Importantly, we found that the barrier of metformin induced by OH radicals is only 9.6 kcal/mol while the barrier of metformin induced by oxygen is 57.9 kcal/mol, which shows that the rate of the •OH-initiated oxidative reaction of metformin is much faster and that this reaction path occurs more easily. By sample analysis, the mean OH radical generation was 55 nmol/min/g (ranging from 5 to 105 nmol/min/g) on haze days and 30 nmol/min/g (ranging from 10 to 50 nmol/min/g) on non-haze days. Moreover, OH radical generation was higher on haze days than on neighboring non-haze days. Taken together, all data suggest that metformin could consume the PM-induced radicals, such as OH radicals and •O2−, thereby providing health protection.

Keywords： Antioxidative potential     Metformin     Mechanism     OH radical     Health protection.    

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Distributed governance of Solar Radiation Management geoengineering: A possible solution to SRM’s “free-driver

Andrew LOCKLEY

Frontiers of Engineering Management 2019, Volume 6, Issue 4,   Pages 551-556 doi: 10.1007/s42524-019-0055-y

Abstract: Geoengineering (deliberate climate modification) is a possible way to limit Anthropogenic Global Warming

Keywords： geoengineering     Solar Radiation Management     governance     decentralised    

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Self-etching adhesives: possible new pulp capping agents to vital pulp therapy

Chun CUI, Xiu-Neng ZHOU, Wei-Min CHEN

Frontiers of Medicine 2011, Volume 5, Issue 1,   Pages 77-79 doi: 10.1007/s11684-010-0104-8

Abstract:

Pulp capping is one of the solving for keeping vital pulp in the case of dentin caries, reversible pulpitis or traumatic pulp exposure. The presence of bacteria on the cavity walls or in the pulp was the major factor that leads to the failure of pulp capping. Traditional pulp capping agent, calcium hydroxide, may not prevent microleakage. Self-etching system is a newly developed adhesive system, which could provide less microleakage and would not break down or dissolve, preventing the oral fluids and bacteria from the pulp along the cavity wall. This may reduce such clinical problems as postoperative sensitivity, secondary caries and marginal discoloration. Researches showed that some kinds of self-etching adhesives induced the mild to moderate inflammatory pulp response, with negative bacterial staining. Inclusion of antibacterial components into self-etching system, such as 12- methacryloyloxydodecylpyridinium bromide (MDPB) may inhibit bacteria and provide better clinical effects. It is speculated that using the self-etching adhesive system containing the antibacterial agent, such as MDPB, to the dental pulp directly or indirectly, may inhibit bacteria after the placement of restoration as well as residual bacteria in the cavity.

Keywords： dental pulp     pulp capping     self-etching adhesives     antibacterial components    

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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 9-9 doi: 10.1007/s11465-021-0665-z

Abstract: Gear wear is one of the most common gear failures, which changes the mesh relationship of normal gearA new mesh relationship caused by gear wear affects meshing excitations, such as mesh stiffness and transmissionThis paper aims to establish the model of mesh relationship and reveal the vibration characteristicsA geometric model for a new mesh relationship with gear wear is proposed, which is utilized to evaluateComparison with the experimental results verifies the proposed dynamic model based on the new mesh relationship

Keywords： gear wear     mesh relationship     mesh stiffness     transmission error     vibration characteristics    

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Climate Intervention: Possible Impacts on Global Security and Resilience Views & Comments

Marcia McNutt

Engineering 2016, Volume 2, Issue 1,   Pages 50-51 doi: 10.1016/J.ENG.2016.01.015

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Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 105-113 doi: 10.1007/s11705-015-1502-x

Abstract: The phase behavior of twelve synthesized -sitosteryl fatty acid esters with acyl moieties with different chain lengths (C2:0-C18:0) and different degrees of unsaturation (C18:1-C18:3) were investigated in pure and mixed Langmuir monolayers with phospholipids. The surface-pressure isotherms showed that short chain -sitosteryl fatty acid esters gave smaller mean molecular areas and had decreased monolayer stability and the long chain steryl esters did not produce collapsed plateaus. All the steryl esters displayed strong condensing effects, but there was a pronounced structural dependency: medium chain esters (C8 and C10) were less efficient than short and long chain esters. Atomic force microscopy imaging demonstrated that monolayers mixed with dipalmitoyl phosphatidylcholine (DPPC) displayed both DPPC-rich and steryl lipid-rich domains. However, the height and area differences between the two phases and the roughness and morphologic patterns were very dependent on the steryl lipid concentrations as well as the length, the degree of unsaturation and the molecular conformations of the acyl segments. These findings not only provide a better understanding of the interactions between phytosteryl hydrophobic derivatives and biomembranes, but also may be of general use for the design and engineering of phytosterol structural derivations for specific food and pharmaceutical applications.

Keywords： acid esters     dipalmitoyl phosphatidylcholine     Langmuir monolayer     condensing effect     structure-activity relationship    

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Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1711-3

Abstract:

● Properties and performance relationship of CSBT photocatalyst were

Keywords： Black TiO2     Core-shell structure     Property-performance relationship     Agro-industrial effluent    

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Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 293-293 doi: 10.1007/s11709-008-0100-0

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The Mission is Possible: Fighting Sugar and Fat for a Healthier Heart

Baofeng Yang, Rui Wang

Engineering 2023, Volume 20, Issue 1,   Pages 1-2 doi: 10.1016/j.eng.2022.10.003

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Experimental research on catalysts and their catalytic mechanism for hydrogen production by gasification of peanut shell in supercritical water

PEI Aixia, GUO Liejin, JIN Hui

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 451-456 doi: 10.1007/s11708-007-0066-2

Abstract: In addition, the catalytic mechanisms of different catalysts were analyzed, and the possible reaction

Keywords： presence     Raney-Ni     biomass     optimization mixture     possible reaction    

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Possible solutions for sludge dewatering in China

Wei WANG, Yuxiang LUO, Wei QIAO,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 102-107 doi: 10.1007/s11783-010-0001-z

Abstract: In China, over 1.43×10 tons of dewatered sewage sludge, with 80% water content, were generated from wastewater treatment plants in 2007. About 60% of the COD removed during the wastewater treatment process becomes concentrated as sludge. Traditional disposal methods used by municipal solid waste treatment facilities, such as landfills, composting, or incineration, are unsuitable for sludge disposal because of its high water content. Disposal of sludge has therefore become a major focus of current environmental protection policies. The present status of sludge treatment and disposal methodology is introduced in this paper. Decreasing the energy consumption of sludge dewatering from 80% to 50% has been a key issue for safe and economic sludge disposal. In an analysis of sludge water distribution, thermal drying and hydrothermal conditioning processes are compared. Although thermal drying could result in an almost dry sludge, the energy consumption needed for this process is extremely high. In comparison, hydrothermal technology could achieve dewatered sewage sludge with a 50%–60% water content, which is suitable for composting, incineration, or landfill. The energy consumption of hydrothermal technology is lower than that required for thermal drying.

Keywords： sewage sludge disposal     water content     thermal drying     hydrothermal conditioning    

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Application software beyond exascale: challenges and possible trends None

Guang-wen YANG, Hao-huan FU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 10,   Pages 1267-1272 doi: 10.1631/FITEE.1800459

Abstract: Sunway TaihuLight, we provide a projection into the next decade and discuss potential challenges and possible

Keywords： Supercomputing     Exascale     Application    

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Title Author Date Type Operation

Relationship between expression of hepatocyte grow factor and apoptosis of trophoblasts in hypertensive

OUYANG Shan, ZHANG Qinghua, QIAO Fuyuan

Journal Article

Layered alkali titanates (ATiO): possible uses for energy/environment issues

Journal Article

Antioxidative potential of metformin: Possible protective mechanism against generating OH radicals

Huibin Guo, Ning Wang, Xiang Li

Journal Article

Distributed governance of Solar Radiation Management geoengineering: A possible solution to SRM’s “free-driver

Andrew LOCKLEY

Journal Article

Self-etching adhesives: possible new pulp capping agents to vital pulp therapy

Chun CUI, Xiu-Neng ZHOU, Wei-Min CHEN

Journal Article

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Journal Article

Climate Intervention: Possible Impacts on Global Security and Resilience

Marcia McNutt

Journal Article

Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Journal Article

Property-performance relationship of core-shell structured black TiO photocatalyst for environmental

Journal Article

Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Journal Article

The Mission is Possible: Fighting Sugar and Fat for a Healthier Heart

Baofeng Yang, Rui Wang

Journal Article

Experimental research on catalysts and their catalytic mechanism for hydrogen production by gasification of peanut shell in supercritical water

PEI Aixia, GUO Liejin, JIN Hui

Journal Article

Possible solutions for sludge dewatering in China

Wei WANG, Yuxiang LUO, Wei QIAO,

Journal Article

Application software beyond exascale: challenges and possible trends

Guang-wen YANG, Hao-huan FU

Journal Article