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Organogelators based on

Yan Zhai,Wei Chai,Wenwen Cao,Zipei Sun,Yaodong Huang

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 488-493 doi: 10.1007/s11705-015-1503-9

Abstract: A series of -alkoxylbenzamides featuring a long alkyl chain have been synthesized and are readily to form stable gels in a variety of organic solvents. Their self-assembly properties and structure-property relationship were investigated by scanning electron microscopy, X-ray diffraction, H nuclear magnetic resonance, and Fourier transform infrared spectroscopy. The gels formed were multi-responsive to environmental stimuli such as temperature and fluoride anion. The results show that a combination of hydrogen bonding, π-π stacking and van der Waals interaction result in the aggregation of -alkoxylbenzamides to form three-dimension networks, depending on the length of the long alkyl chain.

Keywords： <i>pi>-alkoxylbenzamide     organogelator     self-assembly     gelation    

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Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 238-245 doi: 10.1007/s11708-015-0356-8

Abstract: In this paper, the effect of adding an antioxidant mixture in biodiesel as fuel, in a single cylinder, direct injection compression ignition engine was experimentally investigated and the level of pollutants in the exhaust and performance characteristics of the engine were analyzed. Nine test fuels were prepared with three antioxidants, namely, Succinimide (C H NO ), , dimethyl- -phenylenediamine-dihydrochloride (C H Cl N ), and -phenyl- -phenylenediamine (C H NHC H NH ) added to neat biodiesel at 500 parts per million (ppm), 1000 ppm and 2000 ppm and the observed experimental results were compared with those of neat biodiesel and neat diesel as base fuels. The comparison showed that NO emission was reduced drastically for the test fuels with the antioxidant addition of 2000 ppm. The maximum reduction of 10% of NO emission was observed for the antioxidant mixture in neat biodiesel, with a slight increase in unburned HC, CO and smoke opacity. In addition, the obtained experimental results reveal that the addition of two antioxidants as mixture in neat biodiesel caused improved NO emission reduction for all test fuels.

Keywords： NO emission     antioxidants     Succinimide     <i>Ni>     <i>Ni>-dimethyl-<i>pi>-phenylenediamine-dihydrochloride     <i>Ni>-phenyl-<i>pi>-phenylenediamine    

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Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 194-200 doi: 10.1007/s11709-014-0251-0

Abstract: The paper presents a numerical study on the undrained lateral response of a single, free-head, reinforced concrete pile in soft clays. Soil conditions simulating normally consolidated clays are examined—undrained shear strength increasing with depth—and the pile-soil interaction under static lateral loading is analyzed. The nonlinear ? curves proposed in literature for soft clays are imported into a beam-on-nonlinear-Winkler-foundation simulation in order to predict the pile head lateral load—displacement curve and the distribution of the horizontal displacement and bending moment along the pile. The striking differences among these methods require further investigation via 3D finite element analyses. The determination of the ultimate soil resistance from the results of the finite element analyses aims at providing the estimation of a range of values for the ultimate soil resistance coefficient with depth and the comparison of the derived values to the corresponding ones proposed by existing methodologies.

Keywords： laterally loaded     pile     soft clay     <i>pi>?<i>yi> curves     finite element method (FEM)    

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High specificity detection of Pb

Ruozhen YU,Zheng FANG,Wei MENG,Zhenguang YAN,Lina DU,Hong WANG,Zhengtao LIU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 729-736 doi: 10.1007/s11783-013-0611-3

Abstract: Only one bifunctional metal-chelator was used to prepare immunogen and coating antigen in all of the previous researches. However, the antibody-specific recognition to the spacer arm of the bifunctional metal-chelator might lower the specificity of heavy metal ions immunoassay. Two different bifunctional metal-chelators were adopted to prepare the immunogen and coating antigen respectively in our study to avoid this problem. The conjugates of keyhole limpet hemocyanin (KLH) and -SCN-Bz-DTPA-Pb were used as immunogen, whereas the conjugates of bovine serum albumin (BSA) and -NH -Bn-DTPA-Pb were used as coating antigen. Polyclonal antibodies specific to DTPA-Pb chelates were obtained from rabbits. Indirect competitive enzyme-linked immunosorbent assay (ELISA) was adopted to detect Pb ion solutions prepared by Pb standard solution and ultrapure water. In the mixing microplate, DTPA and Pb ions formed chelates and combined with specific antibodies. After incubation, the DTPA-Pb and the antibodies complex were added into the wells of the reaction microplate. The reaction microplate was coated by the conjugates of BSA and -NH -DTPA-Pb, which competed for the specific antibodies. The result signals presented a good sigmoid curve when the Pb concentration ranges from 0.01 to 100 mg·L . The IC50 of the indirect competitive ELISA is 0.23±0.04 mg·L Pb ion. The cross-reaction with Cd , Cu , Fe , Mn , Zn , and other divalent ions were less than 5%.

Keywords： <i>pi>-SCN-Bz-DTPA     <i>pi>-NH2-Bn-DTPA     lead ion     polyclonal antibody    

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Cytochrome P450 monooxygenase specific activity reduction in wheat

Kangxin HE,Qixing ZHOU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 270-275 doi: 10.1007/s11783-015-0813-y

Abstract: Results indicated that the specific activity of cytochrome P450 (CYP450) monooxygenase was decreasedOn the contrary, the growth related endpoints (i.e., the germination percentage, the biomass and theheight), the content related endpoints (i.e., soluble protein content and CYP450 content), and the superoxide

Keywords： roxithromycin     toxic effect     cytochrome P450 monooxygenase     soil environment     <i>Triticum aestivumi>     biomarker    

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Deciphering the Origins of P1-Induced Power Losses in Cu(In<i>xi>,Ga1–<i>xi> Article

César Omar Ramírez Quiroz, Laura-Isabelle Dion-Bertrand, Christoph J. Brabec, Joachim Müller, Kay Orgassa

Engineering 2020, Volume 6, Issue 12,   Pages 1395-1402 doi: 10.1016/j.eng.2019.12.019

Abstract: <p>In this report, we show that hyperspectral high-resolution photoluminescence mapping is a powerfulSpecifically, by analyzing the standard P1 patterning line ablated before the CIGS deposition, we revealWe further rationalize the origins of this effect by comparing the topography of the P1 edge throughWe also investigate the laser-induced damage on P1 patterning lines performed after the deposition ofp>

Keywords： Cu(Inx     Ga1-x)Se2     Cell-to-module efficiency gap     P1-induced power losses     Hyperspectral photoluminescence    

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FeNi doped porous carbon as an efficient catalyst for oxygen evolution reaction

Jun-Wei Zhang, Hang Zhang, Tie-Zhen Ren, Zhong-Yong Yuan, Teresa J. Bandosz

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 279-287 doi: 10.1007/s11705-020-1965-2

Abstract: Polymer-derived porous carbon was used as a support of iron and nickel species with an objective to obtain an efficient oxygen reduction reaction (OER) catalyst. The surface features were extensively characterized using X-ray diffraction, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. On FeNi-modified carbon the overpotential for OER was very low (280 mV) and comparable to that on noble metal catalyst IrO . The electrochemical properties have been investigated to reveal the difference between the binary alloy- and single metal-doped carbons. This work demonstrates a significant step for the development of low-cost, environmentally-friendly and highly-efficient OER catalysts.

Keywords： OER     polystyrene salt     porous carbon     FeNi alloy     <i>pi>/<i>ni> junction    

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Antifungal and antibacterial functions of medicinal leech recombinant destabilase-lysozyme and its heated-up derivative

PISKUNKOVA, I. B. PAVLOVA, L. L. ZAVALOVA, I. P. BASKOVA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 203-209 doi: 10.1007/s11705-012-1277-2

Abstract: Antifungal activity of recombinant medicinal leech destabilase-lysozyme (rec.Dest-Lys) was investigated by using fungi: , and , including yeasts and . Its antibacterial activity was investigated on gram-negative bacteria . These activities were assessed by radial agar diffusion assay, and scanning and transmission electron microscopy. Therefore, destabilase-lysozyme not only is endo-isopeptidase and lysozyme, but also has antifungal and antibacterial activities. Muramidase activity of rec.Dest-Lys disappeared after heat-treating at 90°C for 50 min without the loss of its antimicrobial activity. Furthermore we showed for the first time that the heated-up derivative of rec.Dest-Lys exhibited more potent activities against the above enumerated fungi and gram-negative bacteria than original protein.

Keywords： recombinant destabilase-lysozyme (rec.Dest-Lys)     antimicrobial activity     antifungal activity     medicinal leech     heated-up derivative of rec.Dest-Lys (T-rec.Dest-Lys)    

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Progress in breeding for resistance to Ug99 and other races of the stem rust fungus in CIMMYT wheat germplasm

Sridhar BHAVANI, David P. HODSON, Julio HUERTA-ESPINO, Mandeep S. RANDHAWA, Ravi P. SINGH

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 3,   Pages 210-224 doi: 10.15302/J-FASE-2019268

Abstract: <p>Races belonging to the Ug99 (TTKSK) lineage of the wheat stem rust fungus, carrying complex virulencep>

Keywords： adult plant resistance     black rust     race-specific resistance     <i>Triticum aestivumi>    

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Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed

Yonghui WANG, Ximei ZHAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1432-1445 doi: 10.1007/s11709-019-0566-y

Abstract: In this paper, a dimensionless Pressure-Impulse (P-I) diagram was constructed as a convenient tool toTo construct the dimensionless P-I diagram, the energy balance method was utilized to yield the pressureThen, the finite element method was employed to validate the developed dimensionless P-I diagram.Finally, the procedures of using the constructed dimensionless P-I diagram to quickly conduct the blast

Keywords： blast loading     curved steel-concrete-steel sandwich shell     Pressure-Impulse diagram     single-degree-of-freedom method     finite element analysis    

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Association between heavy metals and antibiotic-resistant human pathogens in environmental reservoirs: A review

Christine C. Nguyen, Cody N. Hugie, Molly L. Kile, Tala Navab-Daneshmand

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 3, doi: 10.1007/s11783-019-1129-0

Abstract: <p> <p>Heavy metals can act as co-selecting agents and promote antibioticp> <p>Most frequent resistances to heavy metals arep> <p><i>P. aeruginosai> and <i>E. colii> are commonlyp> <p>Heavy metals proliferate antibiotic resistancep>p>

Keywords： Zinc     Cadmium     Copper     Lead     <i>E. colii>     <i>P. aeruginosai>    

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lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Frontiers of Medicine 2023, Volume 17, Issue 2,   Pages 317-329 doi: 10.1007/s11684-022-0931-4

Abstract: P62 level in lncR-GAS5-overexpressing human aortic endothelial cells.Moreover, serine/arginine-rich splicing factor 10 (<i>SRSF10i>) knockdown increased the LC3II/LC3INotably, miR-193-5p overexpression decreased plaque size and increased collagen content.In conclusion, lncR-GAS5 overexpression arrested endothelial autophagy through the miR-193-5p/<i>SRSF10Thus, miR-193-5p/<i>SRSF10i> may serve as a novel treatment target for atherosclerosis.

Keywords： lncR-GAS5     miR-193-5p     splicing factor <i>SRSF10i>     autophagy     atherogenesis    

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Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P.

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 511-516 doi: 10.1007/s11705-019-1820-5

Abstract: The integration of porous organo-silicate low- materials has met a lot of technical challenges. One of the main issues is plasma-induced damage, occurring for all plasma steps involved during interconnects processing. In the present paper, we focus on porous SiOCH low- damage mitigation using cryogenic temperature so as to enable micro-capillary condensation. The aim is to protect the porous low- from plasma-induced damage and keep the -value of the material unchanged, in order to limit the RC delay of interconnexion levels while shrinking the microchip dimension. The cryogenic temperature is used to condense a gas inside the porous low- material. Then, the etching process is performed at the temperature of condensation in order to keep the condensate trapped inside the material during the etching. In the first part of this work, the condensation properties of several gases are screened, leading to a down selection of five gases. Then, their stability into the porous structure is evaluated at different temperature. Four of them are used for plasma damage mitigation comparison. Damage mitigation is effective and shows negligible damage for one of the gases at –50°C.

Keywords： low-<i>ki>     nanotechnology     micro-electronics     cryo-etching     plasma processing    

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Impact of FACTS devices on exercising market power in deregulated electricity market

Shanmugam PRABHAKAR KARTHIKEYAN, I. JACOB RAGLEND, D. P. KOTHARI

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 448-455 doi: 10.1007/s11708-013-0262-x

Abstract: In power system studies, congestion in transmission lines and utilization of flexible alternating current transmission system (FACTS) devices are closely associated. These devices are very important due to their role in power delivery system enhancement. It is to be noted that the generation companies can exercise their market power which depends on the line flows, line constraints, generators’ location and its share to the individual loads. This issue cannot be overlooked as it creates monopoliness which is against the deregulated market policy. The objective of this paper is to study the impact of market power when FACTS devices like thyristor controlled switching capacitor (TCSC) and thyristor controlled phase angle regulator (TCPAR) are used under steady state operation. The market power is determined using nodal must-run share (NMRS) index for the standard IEEE 14-bus system with and without the above FACTS devices and the results obtained are compared. All the above simulations are conducted in a MATLAB 7.9-R2009b environment.

Keywords： flexible alternating current transmission system (FACTS)     thyristor controlled switching capacitor (TCSC)     thyristor controlled phase angle regulator (TCPAR)     market power     must-run generation (MRG)     nodal must-run share (NMRS)    

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Non-thermal plasma for exhaust gases treatment

,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Hilda FRÍAS P.

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 301-305 doi: 10.1007/s11465-015-0344-z

Abstract: <p>This article describes a study on a non-thermal plasma device to treat exhaust gases in an internalp>

Keywords： plasma treatment     NO<i>xi>     CO     CO2     particulate matter     vehicle    

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Title Author Date Type Operation

Organogelators based on

Yan Zhai,Wei Chai,Wenwen Cao,Zipei Sun,Yaodong Huang

Journal Article

Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

Journal Article

Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Journal Article

High specificity detection of Pb

Ruozhen YU,Zheng FANG,Wei MENG,Zhenguang YAN,Lina DU,Hong WANG,Zhengtao LIU

Journal Article

Cytochrome P450 monooxygenase specific activity reduction in wheat

Kangxin HE,Qixing ZHOU

Journal Article

Deciphering the Origins of P1-Induced Power Losses in Cu(In<i>xi>,Ga1–<i>xi>

César Omar Ramírez Quiroz, Laura-Isabelle Dion-Bertrand, Christoph J. Brabec, Joachim Müller, Kay Orgassa

Journal Article

FeNi doped porous carbon as an efficient catalyst for oxygen evolution reaction

Jun-Wei Zhang, Hang Zhang, Tie-Zhen Ren, Zhong-Yong Yuan, Teresa J. Bandosz

Journal Article

Antifungal and antibacterial functions of medicinal leech recombinant destabilase-lysozyme and its heated-up derivative

PISKUNKOVA, I. B. PAVLOVA, L. L. ZAVALOVA, I. P. BASKOVA

Journal Article

Progress in breeding for resistance to Ug99 and other races of the stem rust fungus in CIMMYT wheat germplasm

Sridhar BHAVANI, David P. HODSON, Julio HUERTA-ESPINO, Mandeep S. RANDHAWA, Ravi P. SINGH

Journal Article

Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed

Yonghui WANG, Ximei ZHAI

Journal Article

Association between heavy metals and antibiotic-resistant human pathogens in environmental reservoirs: A review

Christine C. Nguyen, Cody N. Hugie, Molly L. Kile, Tala Navab-Daneshmand

Journal Article

lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Journal Article

Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P.

Journal Article

Impact of FACTS devices on exercising market power in deregulated electricity market

Shanmugam PRABHAKAR KARTHIKEYAN, I. JACOB RAGLEND, D. P. KOTHARI

Journal Article

Non-thermal plasma for exhaust gases treatment

,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Hilda FRÍAS P.

Journal Article