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15N tracing technique 1

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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 (Santaprochiral acetophenone and 4-methyl-2-pentanone to corresponding chiral alcohols were carried out on Fe-CS/SBA-15-15 at atmosphere pressure using 2-propanol as hydrogen donor.Fe-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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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 characterizedtetrabutyl ammonium bromide as phase transfer catalyst, dimethyl sulfoxide as extractant, and Zr-ZSM-5/SBA-15-15, Ag-ZSM-5/SBA-15, Ce-ZSM-5/SBA-15 as catalyst.Under the optimal conditions, the desulfurization rate decreases in the order: Zr-ZSM-5/SBA-15>Ce-ZSM-5/SBA-15>Ag-ZSM-5/SBA-15.

Keywords： composite molecular sieve     oxidation desulfuration     extraction     kinetic    

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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-15-15 exhibits optimal pervaporation desulfurization performance with a permeation flux of 22.07 kg·m ·

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

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Covalent triazine framework with efficient photocatalytic activity in aqueous and solid media

Cyrine Ayed, Wei Huang, Kai A. I. Zhang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 397-404 doi: 10.1007/s11705-019-1884-2

Abstract: the range of the application media of CTFs and design hybrid material of a CTF and mesoporous silica (SBA-15-15) for efficient photocatalysis in aqueous medium.A thiophene-containing CTF was directly synthesized in mesopores of SBA-15.

Keywords： photocatalysis     covalent triazine framework     aqueous medium     SBA-15     solid state    

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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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Characterization and catalytic properties of mesoporous CuO/SBA-16 prepared by different impregnation

DONG Yongli, YUAN Fulong, ZHU Yujun, ZHAO Lina, CAI Zhicheng

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 150-154 doi: 10.1007/s11705-008-0036-x

Abstract: CuO/SBA-16 catalysts were prepared by two different routes – the conventional impregnation method andreduction (H-TPR) measurements which reveal that the cubic cage-like () pore structure of the parent SBAThe CuO/SBA-16 prepared by modified impregnation method has a single highly dispersed CuO which is consideredCuO/SBA-16 prepared by the conventional impregnation method shows the presence of bulk CuO species which

Keywords： different     CuO/SBA-16     temperature     physisorption     introduction    

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of the structure-directing agent with the zeolite framework determines germanium distribution in SCM-15

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 5, doi: 10.1007/s11705-024-2417-1

Abstract: We report results from computational modeling of the relative stability of germanosilicate SCM-15 structureThus, for SCM-15 the stabilization due to the presence of the SDA and their orientation, is thermodynamic

Keywords： zeolite     density functional theory     structure-directing agent     SCM-15    

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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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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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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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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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Duality of Thinking and Turning It Into Creative Thinking Commemorating Publication 15th Annual of on

Liang Guiming

Strategic Study of CAE 2003, Volume 5, Issue 2,   Pages 26-34

Abstract:

Entering the era of 21st century, there are two characteristics bearing on thinkinginnovation and comprehension. As to innovation, how to exite creative-thinking is a warm problem. From the high level of philosophy—epistemology and relative-truth of materialist-dialectics, this paper shows that there is the duality of every form of thinking including the thinking of deduction and that of socalled fixed-accustoming. There is an existence of both non-creative thinking and creative thinking and under certain conditions non-creative thinking may be turn into creative thinking which can make new knowledge and innovative achievements. As to comprehension, there are many different opinions on how to define and classify thinkings. By combining physiology and psychology, this paper divides thinkings into 2 parts and 7 basic forms. Connecting dialectics with comprehension, the conclusions of this paper are shown： the duality of non-creative thinking and creative thinking, the duality of reasoning thinking and understanding thinking, the duality of original knowledge and new knowledge, the duality of idea and test-verification, the duality of discovery and invention, the duality of science (sense of truth ) and art (sense of beauty ). The last conclusion is expressed as an example of seeking the theory of a cross-course —industrial design, the main contents of which are technology, art and market. This theory of ID is the first advance in ID.

Keywords： creative thinking     turn-condition     relativity of knowledge     comprehension    

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Effects of ambient temperature on regulated gaseous and particulate emissions from gasoline-, E10- and M15

Rencheng Zhu, Jingnan Hu, Liqiang He, Lei Zu, Xiaofeng Bao, Yitu Lai, Sheng Su

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1306-1

Abstract: Abstract • Emissions from two sedans were tested with gasoline, E10 and M15 at 30°C and -7°C. • As thedecreased, the PM, PN and BC emissions increased with all fuels. • Particulate emissions with E10 and M15(15% methanol and 85% gasoline by volume) at both 30°C and -7°C.At 30°C, the BC emissions were lower with E10 and M15 than with gasoline in most cases, but E10 and M15might emit more BC than gasoline at -7°C, especially M15.

Keywords： Particle mass     Particle number     Black carbon     Alcohol gasoline     Low temperature    

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Activation of the Macrophage-Associated Inflammasome Exacerbates Myocardial Fibrosis Through the 15-HETE-Mediated

Xu Chen,Zhiyong Du,Dongqing Guo,Jincheng Guo,Qianbin Sun,Tiantian Liu,Kun Hua,Chun Li,Yong Wang,Wei Wang,

Engineering doi: 10.1016/j.eng.2024.05.015

Abstract: macrophage-associated inflammasome activation facilitates the conversion of fibroblasts into myofibroblasts via the 15-hydroxy-5,8,11,13-eicosatetraenoic acid (15-HETE)-mediated small mother against decapentaplegic (Smadspectrometry imaging (MSI) and targeted metabolomics analyses confirmed the significant increase in 15

Keywords： Myocardial infarction     Macrophage inflammasome     NOD-like receptor family pyrin domain containing 3     Myocardial fibrosis    

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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 is a key nutrient element involved in energy transfer for cellular metabolism, respiration and photosynthesis and its supply at low levels can affect legume nodulation, N fixation, and C assimilation. A two-year field study was conducted in Ethiopia in 2012 and 2013 to evaluate the effects of P supply on growth, symbiotic N nutrition, grain yield and water-use efficiency of three groundnut genotypes. Supplying P to the genotypes significantly increased their shoot biomass, symbiotic performance, grain yield, and C accumulation. There was, however, no effect on shoot δ C values in either year. Compared to the zero-P control, supplying 40 kg·ha P markedly increased shoot biomass by 77% and 66% in 2012 and 2013, respectively. In both years, groundnut grain yields were much higher at 20 and 30 kg·ha P. 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 concentration, and δ C. The phosphorus × genotype interaction was also significant for shoot DM, N content, N-fixed and soil N uptake.

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

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Title Author Date Type Operation

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

XUE Ping, WU Tao

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

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

Covalent triazine framework with efficient photocatalytic activity in aqueous and solid media

Cyrine Ayed, Wei Huang, Kai A. I. Zhang

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

Characterization and catalytic properties of mesoporous CuO/SBA-16 prepared by different impregnation

DONG Yongli, YUAN Fulong, ZHU Yujun, ZHAO Lina, CAI Zhicheng

Journal Article

of the structure-directing agent with the zeolite framework determines germanium distribution in SCM-15

Journal Article

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

Journal Article

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

Jianping Ye

Journal Article

Experimental investigation on freeze−thaw durability of polymer concrete

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

Duality of Thinking and Turning It Into Creative Thinking Commemorating Publication 15th Annual of on

Liang Guiming

Journal Article

Effects of ambient temperature on regulated gaseous and particulate emissions from gasoline-, E10- and M15

Rencheng Zhu, Jingnan Hu, Liqiang He, Lei Zu, Xiaofeng Bao, Yitu Lai, Sheng Su

Journal Article

Activation of the Macrophage-Associated Inflammasome Exacerbates Myocardial Fibrosis Through the 15-HETE-Mediated

Xu Chen,Zhiyong Du,Dongqing Guo,Jincheng Guo,Qianbin Sun,Tiantian Liu,Kun Hua,Chun Li,Yong Wang,Wei Wang,

Journal Article

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

Sofiya K. MUHABA, Felix D. DAKORA

Journal Article