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High production of butyric acid by

Chao Ma,Jianfa Ou,Matthew Miller,Sarah McFann,Xiaoguang (Margaret) Liu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 369-375 doi: 10.1007/s11705-015-1525-3

Abstract: Finally, the metabolic flux balance analysis was performed to investigate the carbon rebalance in .

Keywords: Clostridium tyrobutyricum     butyric acid production     fermentation     mutant     pH     flux balance analysis    

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 424-440 doi: 10.1007/s11708-016-0423-9

Abstract: This paper presents the simulation of major mechanical properties of a flux reversal generator (FRG)The results of CFD are mainly obtained to fine tune the thermal analysis.Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady stateThe vibration analysis is illustrated.Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations

Keywords: flux reversal generator     air velocity     computation fluid dynamics     thermal analysis     vibration analysis     finiteelement analysis    

Quantitative analysis of yield and soil water balance for summer maize on the piedmont of the North China

Jingjing WANG,Feng HUANG,Baoguo LI

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4,   Pages 295-310 doi: 10.15302/J-FASE-2015074

Abstract: The North China Plain (NCP) is a major grain production area in China, but the current winter wheat-summer maize system has resulted in a large water deficit. This water-shortage necessitates the improvement of crop water productivity in the NCP. A crop water model, AquaCrop, was adopted to investigate yield and water productivity (WP) for rain-fed summer maize on the piedmont of the NCP. The data sets to calibrate and validate the model were obtained from a 3-year (2011–2013) field experiment conducted on the Yanshan piedmont of the NCP. The range of root mean square error (RMSE) between the simulated and measured biomass was 0.67–1.25 t·hm , and that of relative error (RE) was 9.4%–15.4%, the coefficient of determination ( ) ranged from 0.992 to 0.994. The RMSE between the simulated and measured soil water storage at depth of 0–100 cm ranged from 4.09 to 4.39 mm; and RE and in the range of 1.07%–1.20% and 0.880–0.997, respectively. The WP as measured by crop yield per unit evapotranspiration was 2.50–2.66 kg·m . The simulated impact of long-term climate (i.e., 1980–2010) and groundwater depth on crop yield and WP revealed that the higher yield and WP could be obtained in dry years in areas with capillary recharge from groundwater, and much lower values elsewhere. The simulation also suggested that supplementary irrigation in areas without capillary groundwater would not result in groundwater over-tapping since the precipitation can meet the water required by both maize and ecosystem, thus a beneficial outcome for both food and ecosystem security can be assured.

Keywords: AquaCrop     summer maize     soil water balance     water productivity    

Flow and mass balance analysis of eco-bio infiltration system

Marla C. MANIQUIZ, Lee-Hyung KIM, Soyoung LEE, Jiyeon CHOI

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 612-619 doi: 10.1007/s11783-012-0448-1

Abstract: A structured stormwater infiltration system was developed and constructed at a university campus and monitoring of storm events was performed during a one-year operation period. The flow and pollutant mass balances were analyzed and the overall efficiency of the system was assessed. While significant positive correlations were observed among rainfall, runoff and discharge volume ( = 0.93-0.99; <0.05), there was no significant correlations existed between rainfall, runoff, discharge volume and pollutant load. The system was more effective in reducing the runoff volume by more than 50% for small storm events but the difference between the runoff and discharge volume was significant even with rainfall greater than 10 mm. Results showed that the pollutant reduction rates were higher compared to the runoff volume reduction. Average pollutant reduction rates were in the range of 72% to 90% with coefficient of variation between 0.10 and 0.46. Comparable with runoff reduction, the system was more effective in reducing the pollutant load for small storm events, in the range of 80% to 100% for rainfall between 0 and 10 mm; while 65% to 80% for rainfall between 10 and 20 mm. Among the pollutant parameters, particulate matters was highly reduced by the system achieving only a maximum of 25% discharge load even after the entire runoff was completely discharged. The findings have proven the capability of the system as a tool in stormwater management achieving both flow reduction and water quality improvement.

Keywords: best management practice     flow balance     low impact development     mass balance     nonpoint source     stormwater    

Metabolic flux analysis on arachidonic acid fermentation

JIN Mingjie, HUANG He, ZHANG Kun, YAN Jie, GAO Zhen

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 421-426 doi: 10.1007/s11705-007-0077-6

Abstract: The analysis of flux distributions in metabolic networks has become an important approach for understandingA model of metabolic flux analysis of arachidonic acid (AA) synthesis in ME-1 was established and carbonflux distributions were estimated in different fermentation phases with different concentrations offluxes to AA were 3.28%, 8.80% and 6.97%, respectively, with sufficient N-source broth based on the flux

Keywords: AA     different fermentation     concentration N-source     exponential     metabolic    

Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 150-159 doi: 10.1007/s11465-013-0266-6

Abstract: The thermal-structural analysis is then used with coupling to determine the deformation established and

Keywords: brake disks     heat flux     heat-transfer coefficient     Von Mises stress     contact pressure    

High heat flux thermal management through liquid metal driven with electromagnetic induction pump

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 460-470 doi: 10.1007/s11708-022-0825-9

Abstract: metal-based minichannel heat dissipation method was developed for cooling electric devices with high heat fluxThe results show that the liquid metal cooling system can dissipate heat flux up to 242 W/cm2flux

Keywords: high heat flux     liquid metal     electromagnetic pump     minichannel heat sink     thermal interface material    

Observation of bioturbation and hyporheic flux in streambeds

Jinxi SONG, Xunhong CHEN, Cheng CHENG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 340-348 doi: 10.1007/s11783-010-0233-y

Abstract: The measurements of the vertical hydraulic gradient across the submerged streambed show that vertical flux

Keywords: invertebrate bioturbation     clogging     hyporheic exchange     streambed     the Elkhorn River    

Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 162-172 doi: 10.1007/s11705-009-0267-5

Abstract: The population balance model (PBM) is an effective approach to predict the bubble size distribution,

Keywords: bubble column     computational fluid dynamics     bubble breakup and coalescence     population balance model     bubble    

Gut microbial balance and liver transplantation: alteration, management, and prediction

Xinyao Tian, Zhe Yang, Fangzhou Luo, Shusen Zheng

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 123-129 doi: 10.1007/s11684-017-0563-2

Abstract:

Liver transplantation is a conventional treatment for terminal stage liver diseases. However, several complications still hinder the survival rate. Intestinal barrier destruction is widely observed among patients receiving liver transplant and suffering from ischemia–reperfusion or rejection injuries because of the relationship between the intestine and the liver, both in anatomy and function. Importantly, the resulting alteration of gut microbiota aggravates graft dysfunctions during the process. This article reviews the research progress for gut microbial alterations and liver transplantation. Especially, this work also evaluates research on the management of gut microbial alteration and the prediction of possible injuries utilizing microbial alteration during liver transplantation. In addition, we propose possible directions for research on gut microbial alteration during liver transplantation and offer a hypothesis on the utilization of microbial alteration in liver transplantation. The aim is not only to predict perioperative injuries but also to function as a method of treatment or even inhibit the rejection of liver transplantation.

Keywords: gut microbial balance     liver transplantation     ischemia–reperfusion     acute rejection    

Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0726-y

Abstract: Balance valve is a core component of the 11000-meter manned submersible “struggle,” and its sealing performanceFinally, the minimum sealing force equation is applied in a balance valve to be experimented using aThe balance valve designed through the minimum sealing force equation is leak-free in the experiment.Thus, the minimum sealing force equation is suitable for the ultrahigh pressure balance valve and hasguiding significance for evaluating the sealing performance of ultrahigh pressure balance valves.

Keywords: seawater balance valve     sealing performance     hybrid ANE model     FEM     minimum sealing force equation    

Mass and heat balance calculations and economic evaluation of an innovative biomass pyrolysis project

Quanyuan WEI, Yongshui QU, Tianwei TAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 355-361 doi: 10.1007/s11705-010-0567-9

Abstract: Based on the data from a straw pyrolysis demonstration project, the mass and heat balance of the biomassA cost-benefit analysis was then used to study the viability of commercializing the project.The analysis included net present value, internal rate of return and investment payback period.

Keywords: mass balance     heat balance     biomass pyrolysis     economic benefit    

Application of cold spraying for flux-free brazing of aluminium alloy 6060

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 256-260 doi: 10.1007/s11465-010-0095-9

Abstract: Coated samples were brazed flux-free under argon atmosphere by an induction heating system.

Keywords: aluminium alloy     flux-free brazing     cold spraying     shear strength    

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: approach for the deviation correction trajectory and posture rectification load for an earth pressure balance

Keywords: additional position change     deviation correction trajectory     earth pressure balance shield     mechanical    

Model of a Distributed Database Server With Redundant Structure and Its Load Balance

Tian Junfeng,Liu Yuling,Du Ruizhong

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 35-42

Abstract: focused on its redundancy relations, model of load balancing based on mobile agent and performance analysis

Keywords: distributed database     redundancy     load balance     mobile agent     performance analysis    

Title Author Date Type Operation

High production of butyric acid by

Chao Ma,Jianfa Ou,Matthew Miller,Sarah McFann,Xiaoguang (Margaret) Liu

Journal Article

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

Journal Article

Quantitative analysis of yield and soil water balance for summer maize on the piedmont of the North China

Jingjing WANG,Feng HUANG,Baoguo LI

Journal Article

Flow and mass balance analysis of eco-bio infiltration system

Marla C. MANIQUIZ, Lee-Hyung KIM, Soyoung LEE, Jiyeon CHOI

Journal Article

Metabolic flux analysis on arachidonic acid fermentation

JIN Mingjie, HUANG He, ZHANG Kun, YAN Jie, GAO Zhen

Journal Article

Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

Journal Article

High heat flux thermal management through liquid metal driven with electromagnetic induction pump

Journal Article

Observation of bioturbation and hyporheic flux in streambeds

Jinxi SONG, Xunhong CHEN, Cheng CHENG,

Journal Article

Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Journal Article

Gut microbial balance and liver transplantation: alteration, management, and prediction

Xinyao Tian, Zhe Yang, Fangzhou Luo, Shusen Zheng

Journal Article

Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible

Journal Article

Mass and heat balance calculations and economic evaluation of an innovative biomass pyrolysis project

Quanyuan WEI, Yongshui QU, Tianwei TAN

Journal Article

Application of cold spraying for flux-free brazing of aluminium alloy 6060

Kirsten BOBZIN, Lidong ZHAO, Thomas SCHLAEFER, Thomas WARDA,

Journal Article

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Journal Article

Model of a Distributed Database Server With Redundant Structure and Its Load Balance

Tian Junfeng,Liu Yuling,Du Ruizhong

Journal Article