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LYX: A novel aerobic bacterium with advantage of removing nitrate high effectively by assimilation and dissimilation simultaneously

Yuxin Li, Jiayin Ling, Pengcheng Chen, Jinliang Chen, Ruizhi Dai, Jinsong Liao, Jiejing Yu, Yanbin Xu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1349-3

Abstract: . • It removed 90% of NO3−-N in 24 h under aerobic conditions. • This strain converted NO3−-N to bio-nitrogenAmong them, 37.9% of NO3−-N was assimilated into Bio-N, about 51.9% was reduced to gaseous nitrogen andless than 0.5% of nitrogen was replaced by NO2−-N and NH4+-N, 9.7% NO3−-N remained in the effluent atIn addition, it was found with the 15N tracer technique that inoculation of this strain on sludge increasedthe amount of nitrogen loss from 9.26 nmol N/(g·h) to 23.835 nmol N/(g·h).

Keywords： Pseudomonas mendocina     Aerobic nitrate removal     15N tracing technique     Denitrification assimilatively    

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Negative weights in network time model

Zoltán A. VATTAI, Levente MÁLYUSZ

Frontiers of Engineering Management 2022, Volume 9, Issue 2,   Pages 268-280 doi: 10.1007/s42524-020-0109-1

Abstract: Time does not go backward. A negative duration, such as “time period” at first sight is difficult to interpret. Previous network techniques (CPM/PERT/PDM) did not support negative parameters and/or loops (potentially necessitating recursive calculations) in the model because of the limited computing and data storage capabilities of early computers. Monsieur Roy and John Fondahl implicitly introduced negative weights into network techniques to represent activities with fixed or estimated durations (MPM/PDM). Subsequently, the introduction of negative lead and/or lag times by software developers (IBM) apparently overcome the limitation of not allowing negative time parameters in time model. Referring to general digraph (Event on Node) representation where activities are represented by pairs of nodes and pairwise relative time restrictions are represented by weighted arrows, we can release most restraints in constructing the graph structure (incorporating the dynamic model of the inner logic of time plan), and a surprisingly flexible and handy network model can be developed that provides all the advantages of the abovementioned techniques. This paper aims to review the theoretical possibilities and technical interpretations (and use) of negative weights in network time models and discuss approximately 20 types of time-based restrictions among the activities of construction projects. We focus on pure relative time models, without considering other restrictions (such as calendar data, time-cost trade-off, resource allocation or other constraints).

Keywords： graph technique     network technique     construction management     scheduling    

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Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (

Sofiya K. MUHABA, Felix D. DAKORA

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4,   Pages 455-466 doi: 10.15302/J-FASE-2020354

Abstract: Phosphorus supply markedly reduced shoot δ N values and increased the %Ndfa and amount of N-fixed, indicating the direct involvement of P in promoting N fixation in nodulated groundnut.The three genotypes differed significantly in δ N, %Ndfa, N-fixed, grain yield, C concentrationThe phosphorus × genotype interaction was also significant for shoot DM, N content, N-fixed andsoil N uptake.

Keywords： shoot yield     N-fixed     %Ndfa     δ15N     δ13C     water-use efficiency    

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Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 251-255 doi: 10.1007/s11705-007-0045-1

Abstract: A heterogeneous chiral catalyst Fe(III)-CS (chitosan) complex/mesoporous molecular sieve SBA-15 (Santaacetophenone and 4-methyl-2-pentanone to corresponding chiral alcohols were carried out on Fe-CS/SBA-15Fe-CS/SBA-15 with 2.2% mass fraction Fe exhibits considerable enantioselectivity and catalytic activity

Keywords： asymmetric transfer     enantioselectivity     Fe-CS/SBA-15     aliphatic     aromatic    

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GDF15 negatively regulates chemosensitivity via TGFBR2-AKT pathway-dependent metabolism in esophageal

Frontiers of Medicine 2023, Volume 17, Issue 1,   Pages 119-131 doi: 10.1007/s11684-022-0949-7

Abstract: Growth differentiation factor 15 (GDF15) is crucial in the development of various types of tumors andIn this study, the link between GDF15 and chemotherapy resistance in ESCC was further explored.The relationship between GDF15 and the chemotherapy response was investigated through in vitroESCC patients with high levels of GDF15 expression showed an inferior chemotherapeutic response.and that GDF15 can be targeted during chemotherapy, resulting in beneficial therapeutic outcomes.

Keywords： GDF15     esophageal squamous cell carcinoma     chemoresistance     cellular metabolism     TGFBR2     AKT    

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Enhanced desulfurization performance of hybrid membranes using embedded hierarchical porous SBA-15

Ye Zhang, Jian Song, Josue Quispe Mayta, Fusheng Pan, Xue Gao, Mei Li, Yimeng Song, Meidi Wang, Xingzhong Cao, Zhongyi Jiang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 661-672 doi: 10.1007/s11705-019-1830-3

Abstract: study, novel hybrid membranes are designed by embedding hierarchical porous Santa Barbara Amorphous 15(SBA-15) with a dual-pore architecture (micropores and mesopores) for pervaporation desulfurization.The SBA-15 with cylindrical mesopores provides molecular transport expressways to ensure improved permeabilityConsidering thiophene/ -octane mixture as a model system, the hybrid membrane with embedded 6 wt-% SBA-15

Keywords： hybrid membranes     hierarchical porous SBA-15     sieving effect     pervaporation     desulfurization    

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Sensory innervation of the anterior eye segment in rats: a retrograde tracing study

Haixia LIU MD , Zhiwang LI MD , Min YANG MD , Xiang TIAN MS , Chaoying LI PhD , Lei PEI PhD ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 352-356 doi: 10.1007/s11684-009-0065-y

Abstract: study aimed to investigate the sensory innervation of the anterior eye segment in rats by retrograde tracing#8217;s eye, i.e. the cornea, ciliary body, iris, and trabecular meshwork, were studied by retrograde tracingIt is feasible to identify them using retrograde tracing with FAST Dil anterior chamber injection.

Keywords： trigeminal ganglion     retrograde tracing    

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A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 163-171 doi: 10.1007/s11705-009-0235-0

Abstract: We fabricated bismuth biphenoate complex, Zn-Mg-Al composite oxides, and SBA-15 or Al-SBA-15 immobilizedZn-Mg-Al oxides and SBA-15 or Al-SBA-15 immobilized ionic liquid, are efficient for the synthesis of

Keywords： SBA-15     CO cycloaddition     Al-SBA-15 immobilized     CO     dissociation    

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Beneficial metabolic activities of inflammatory cytokine interleukin 15 in obesity and type 2 diabetes

Jianping Ye

Frontiers of Medicine 2015, Volume 9, Issue 2,   Pages 139-145 doi: 10.1007/s11684-015-0377-z

Abstract: In this review article, interleukin 15 (IL-15) is used as a new example to explain the beneficial effectsIL-15 expression is induced in immune cells by endotoxin and in muscle cells by physical exercise.In the regulation of metabolism, IL-15 reduces weight gain without inhibiting food intake in rodents.In human, circulating IL-15 is negatively associated with body weight.The mechanism of IL-15 action remains to be fully uncovered in the regulation of energy expenditure.

Keywords： inflammation     obesity     cytokine     energy expenditure     insulin resistance    

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Oxidation-extraction desulfurization of model oil over Zr-ZSM-5/SBA-15 and kinetic study

Chuanzhu LU,Hui FU,Huipeng LI,Hua ZHAO,Tianfeng CAI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 203-211 doi: 10.1007/s11705-014-1420-3

Abstract: ZSM-5/SBA-15 composite molecular sieves were synthesized using post-synthesis method and characterizedby X-ray diffraction and N adsorption-desorption., Ag-ZSM-5/SBA-15, Ce-ZSM-5/SBA-15 as catalyst.-5/SBA-15>Ag-ZSM-5/SBA-15.The highest desulfurization rate is 84.53% under the catalysis of Zr-ZSM-5/SBA-15.

Keywords： composite molecular sieve     oxidation desulfuration     extraction     kinetic    

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Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Andreja NEMET, Jiří Jaromír KLEMEŠ, Petar Sabev VARBANOV, Valter MANTELLI

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 163-182 doi: 10.1007/s11705-015-1520-8

Abstract: The Retrofit Tracing Grid Diagram presents all streams and heat exchangers in temperature scale and the

Keywords： Heat Integration     retrofit     Pinch Analysis     thermodynamic approach     oil refinery    

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DUT15QY20, DUT15TD29, and 3132016029), and the Prospective Research Project on Future Networks from Jiangsupresented at the IEEE/CIC International Conference on Communications in China, Shanghai, China, Oct. 13–15 Article

Peng XIAO,Zhi-yang LI,Song GUO,Heng QI,Wen-yu QU,Hai-sheng YU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 7,   Pages 620-633 doi: 10.1631/FITEE.1500350

Abstract: As a novel architecture, software-defined networking (SDN) is viewed as the key technology of future networking. The core idea of SDN is to decouple the control plane and the data plane, enabling centralized, flexible, and programmable network control. Although local area networks like data center networks have benefited from SDN, it is still a problem to deploy SDN in wide area networks (WANs) or large-scale networks. Existing works show that multiple controllers are required in WANs with each covering one small SDN domain. However, the problems of SDN domain partition and controller placement should be further addressed. Therefore, we propose the spectral clustering based partition and placement algorithms, by which we can partition a large network into several small SDN domains efficiently and effectively. In our algorithms, the matrix perturbation theory and eigengap are used to discover the stability of SDN domains and decide the optimal number of SDN domains automatically. To evaluate our algorithms, we develop a new experimental framework with the Internet2 topology and other available WAN topologies. The results show the effectiveness of our algorithm for the SDN domain partition and controller placement problems.

Keywords： Software-defined networking (SDN)     Controller placement     K self-adaptive method    

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Tracing the impact of stack configuration on interface resistances in reverse electrodialysis by in situ

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1480-9

Abstract:

• RED performance and stack resistance were studied by EIS and LSV.

Keywords： Reverse electrodialysis     Electrochemical impedance spectroscopy     Concentration polarization     Spacer shadow effect    

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General modeling and optimization technique for real-world earth observation satellite scheduling

Frontiers of Engineering Management   Pages 695-709 doi: 10.1007/s42524-023-0263-3

Abstract: This study proposes a general modeling and optimization technique for common and real-world EOS schedulingIn this technique, a framework that decouples the modeling, constraints, and optimization of EOS schedulingFor simplified EOS scheduling problems, the proposed technique shows better performance in applicabilityconstrained real-world benchmark exampled by a four-EOS Chinese commercial constellation is provided, and the technique

Keywords： earth observation satellite     scheduling     general technique     optimization algorithm     commercial constellation    

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Experimental investigation on freeze−thaw durability of polymer concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1038-1046 doi: 10.1007/s11709-021-0748-2

Abstract: Assessing the durability of concrete is of prime importance to provide an adequate service life and reduce the repairing cost of structures. Freeze–thaw is one such test that indicates the ability of concrete to last a long time without a significant loss in its performance. In this study, the freeze–thaw resistance of polymer concrete containing different polymer contents was explored and compared to various conventional cement concretes. Concretes’ fresh and hardened properties were assessed for their workability, air content, and compressive strength. The mass loss, length change, dynamic modulus of elasticity, and residual compressive strength were determined for all types of concretes subjected to freeze–thaw cycles according to ASTM C666-procedure A. Results showed that polymer concrete (PC) specimens prepared with higher dosages of polymer contents possessed better freeze–thaw durability compared to other specimens. This high durability performance of PCs is mainly due to their impermeable microstructures, absence of water in their structure, and the high bond strength between aggregates and a polymer binder. It is also indicated that the performance of high-strength concrete containing air-entraining admixture is comparable with PC having optimum polymer content in terms of residual compressive strength, dynamic modulus of elasticity, mass loss, and length change.

Keywords： durability test     freeze-thaw resistance     polymer concrete     residual compressive strength     ASTM C666-15    

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Title Author Date Type Operation

LYX: A novel aerobic bacterium with advantage of removing nitrate high effectively by assimilation and dissimilation simultaneously

Yuxin Li, Jiayin Ling, Pengcheng Chen, Jinliang Chen, Ruizhi Dai, Jinsong Liao, Jiejing Yu, Yanbin Xu

Journal Article

Negative weights in network time model

Zoltán A. VATTAI, Levente MÁLYUSZ

Journal Article

Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (

Sofiya K. MUHABA, Felix D. DAKORA

Journal Article

Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Journal Article

GDF15 negatively regulates chemosensitivity via TGFBR2-AKT pathway-dependent metabolism in esophageal

Journal Article

Enhanced desulfurization performance of hybrid membranes using embedded hierarchical porous SBA-15

Ye Zhang, Jian Song, Josue Quispe Mayta, Fusheng Pan, Xue Gao, Mei Li, Yimeng Song, Meidi Wang, Xingzhong Cao, Zhongyi Jiang

Journal Article

Sensory innervation of the anterior eye segment in rats: a retrograde tracing study

Haixia LIU MD , Zhiwang LI MD , Min YANG MD , Xiang TIAN MS , Chaoying LI PhD , Lei PEI PhD ,

Journal Article

A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Journal Article

Beneficial metabolic activities of inflammatory cytokine interleukin 15 in obesity and type 2 diabetes

Jianping Ye

Journal Article

Oxidation-extraction desulfurization of model oil over Zr-ZSM-5/SBA-15 and kinetic study

Chuanzhu LU,Hui FU,Huipeng LI,Hua ZHAO,Tianfeng CAI

Journal Article

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Andreja NEMET, Jiří Jaromír KLEMEŠ, Petar Sabev VARBANOV, Valter MANTELLI

Journal Article

DUT15QY20, DUT15TD29, and 3132016029), and the Prospective Research Project on Future Networks from Jiangsupresented at the IEEE/CIC International Conference on Communications in China, Shanghai, China, Oct. 13–15

Peng XIAO,Zhi-yang LI,Song GUO,Heng QI,Wen-yu QU,Hai-sheng YU

Journal Article

Tracing the impact of stack configuration on interface resistances in reverse electrodialysis by in situ

Journal Article

General modeling and optimization technique for real-world earth observation satellite scheduling

Journal Article

Experimental investigation on freeze−thaw durability of polymer concrete

Journal Article