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

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

《结构与土木工程前沿（英文）》 2014年第8卷第2期页码 194-200 doi: 10.1007/s11709-014-0251-0

摘要： 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.

关键词： laterally loaded pile soft clay p?y curves finite element method (FEM)

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Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

《能源前沿（英文）》 2015年第9卷第2期页码 238-245 doi: 10.1007/s11708-015-0356-8

摘要： 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.

关键词： NO emission antioxidants Succinimide N N-dimethyl-p-phenylenediamine-dihydrochloride N-phenyl-p-phenylenediamine

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Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

《化学科学与工程前沿（英文）》 2013年第7卷第4期页码 472-481 doi: 10.1007/s11705-013-1351-4

摘要： Cu(I)Y adsorbent was prepared by reduction of Cu(II)Y which was prepared by ion exchange between the NaY zeolite and a solution of Cu(II) chloride. The dynamic adsorption capacity of Cu(I)Y for CO was calculated by adsorption breakthrough curve measured on a fixed bed at 30°C and 0.006 MPa (g) of CO partial pressure. The calculated CO adsorption capacity was 2.14 mmol/g, 37.5 times as much as that of NaY zeolite. The adsorption breakthrough curve experiment was also simulated with Aspen Adsorption software and the results were approximately consistent with experimental results. Then a five-bed VPSA process for separating CO from syngas on this adsorbent was dynamically simulated with Aspen Adsorption software with the adsorption pressure of 0.68 MPa (g) and the desorption pressure of -0.075 MPa (g). The results showed that CO was enriched from 32.3% to 95.16%–98.12%, and its recovery was 88.47%–99.44%.

关键词： Cu(I)Y adsorbent breakthrough curve desorption VPSA simulation

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High specificity detection of Pb

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

《环境科学与工程前沿（英文）》 2014年第8卷第5期页码 729-736 doi: 10.1007/s11783-013-0611-3

摘要： 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%.

关键词： p-SCN-Bz-DTPA p-NH₂-Bn-DTPA lead ion polyclonal antibody

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Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Kolozhvari, Irina I. Ivanova

《化学科学与工程前沿（英文）》 2018年第12卷第1期页码 70-76 doi: 10.1007/s11705-017-1694-3

摘要： Cs-containing FAU(Y)-type zeolite catalysts were prepared by conventional and novel ion exchange procedures followed by incipient wetness impregnation with CsOH. The novel ion exchange procedure involved hydrothermal treatment of NaY zeolite in aqueous solution of CsCl at 140–200 °C for 6–24 h. The samples were characterized by low-temperature nitrogen adsorption, X-ray fluorescence analysis, X-ray powder diffraction, scanning electron microscopy, Na, Al and Cs magic angle spinning nuclear magnetic resonance, CO and NH -Temperature programmed desorption. The results show that hydrothermal treatment at 200 °C allows to obtain higher degrees of ion-exchange (up to 83%) with respect to conventional method giving maximum 66%–69%. Catalytic properties of Cs-containing FAU(Y) were studied in aniline methylation. The yield of -methylaniline is shown to correlate with catalyst’s basicity. The best catalyst performance was achieved over the catalyst with the highest ion-exchange degree impregnated with CsOH. The selectivity to -methylaniline over this catalyst reached 96.4%.

关键词： FAU(Y) zeolite ion exchange with cesium aniline alkylation N-methylaniline

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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

《化学科学与工程前沿（英文）》 2021年第15卷第2期页码 279-287 doi: 10.1007/s11705-020-1965-2

摘要： 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.

关键词： OER polystyrene salt porous carbon FeNi alloy p/n junction

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用高光谱发光法研究Cu(In_xi>,Ga_1–xi>)Se₂ (CIGS)模块中由P1引起的功率损耗的成因 Article

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

《工程（英文）》 2020年第6卷第12期页码 1395-1402 doi: 10.1016/j.eng.2019.12.019

摘要： 在本文中，我们利用了高光谱高分辨率光致发光映射技术，这是一个强大的工具，可用于选择和优化在Cu(In_xP1图案线，我们发现了沿着下部的钼槽边缘的异常发射猝灭效应。通过扫描电子显微镜（SEM）比较了P1边缘的横截面的形貌，我们进一步合理化产生这种效应的起因，但无法用厚度变化解释光发射的减少。我们还研究了激光诱导对CIGS沉积后的P1图案线带来的损伤。我们的发现能更好地理解P1引起的功率损耗，并为改进与行业相关的模块互连方案提供了新的见解。p>

关键词： Cu(Inx Ga1–x)Se2 电池到模块的效率差距由P1引起的功率损耗高光谱光致发光激光烧蚀短程热效应

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Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

《结构与土木工程前沿（英文）》 2014年第8卷第4期 页码 448-455 doi: 10.1007/s11709-014-0262-x

摘要： Rock mass classification system is very suitable for various engineering design and stability analysis. classification method is confirmed by Japan Highway Public Corporation that this method can figure out either strength or deformability of rock mass, further appropriating the amount of rock bolts, thickness of shotcrete, and size of pitch of steel ribs just after the blasting procedure. Based on these advantages of method, in this study, according to data of five deep and long tunnels in Iran, two equations for estimating the value of method from and classification systems were developed. These equations as a new method were able to optimize the support system for and classification systems. From classification and its application in these case studies, it is pointed out that the method for the design of support systems in underground working is more reliable than the and classification systems.

关键词： JH classification Q and RMR classification new method

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抗白粉病基因 Pm40i> 在我国“后 Pm21i> 时代”小麦育种中的重要作用 Perspective

唐圣雯,胡玉亭,钟胜福,罗培高

《工程（英文）》 2018年第4卷第4期 页码 500-506 doi: 10.1016/j.eng.2018.06.004

摘要： 由小麦白粉菌[Blumeria graminis f. sp.p>

关键词：小麦 白粉病 Pm21i> Pm40i> 外源基因 内源抗性

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NiFeRuO_xi> nanosheets on Ni foam as an electrocatalyst for efficient

《化学科学与工程前沿（英文）》 2023年第17卷第11期 页码 1698-1706 doi: 10.1007/s11705-023-2334-8

摘要： The electrocatalyst NiFeRuO_x/NF, comprised of NiFeRuO_x nanosheets grown on Ni foam, was synthesized using a hydrothermal process followed by thermal annealing. NiFeRuO_x/NF displays high electrocatalytic activity and stability for overall alkaline seawater splitting: 98 mV@ 10 mA∙cm⁻² in hydrogen evolution reaction, 318 mV@ 50 mA∙cm⁻² in oxygen evolution reaction, and a cell voltage of 1.53 V@ 10 mA∙cm⁻², as well as 20 h of durability. A solar-driven system containing such a bifunctional NiFeRuO_x/NF has an almost 100% Faradaic efficiency. The NiFeRuO_x coating around Ni foam is an anti-corrosion layer and also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuO_x nanosheets Ni foam electrocatalysis overall seawater splitting solar-driven system

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2014—2016年食品动物源RE-cmeABCi>阳性弯曲菌流行与耐药性现状 Article

刘德俊, 刘蔚雯, 李星, 姚红, 沈张奇, 汪洋, 沈建忠

《工程（英文）》 2020年第6卷第1期 页码 34-39 doi: 10.1016/j.eng.2019.10.013

摘要： 弯曲菌是引起人类胃肠炎的一类重要食源性致病菌。111株RE-cmeABC阳性空肠弯曲菌与46株RE-cmeABC阴性空肠弯曲菌相比在氟苯尼考、克林霉素和红霉素的耐药率上具有显著差异（P 

关键词： RE- cmeABC i> 弯曲菌 环丙沙星 氟苯尼考

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A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

《化学科学与工程前沿（英文）》 2021年第15卷第3期 页码 679-686 doi: 10.1007/s11705-020-1979-9

摘要： A convenient and highly efficient method is described for the synthesis of -methoxycarbazole derivatives, including those with sterically demanding, benzannulated, or strongly electron-donating or -withdrawing substituents. Various -methoxycarbazole derivatives were directly prepared in good-to-moderate yields by the Pd (dba) CHCl /9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene-catalyzed reactions of the corresponding dibromobiphenyl compounds and methoxya-mine. Based on this methodology, the first total synthesis of 3,3′-[oxybis(methylene)]bis(9-methoxy-9 -carbazole), an antimicrobial dimeric carbazole alkaloid previously isolated from the stem bark of , was achieved in 18% yield over seven steps from 1,2-dibromobenzene.

关键词： N-methoxyl carbazole dimeric N-methoxyl carbazole alkaloid total synthesis double N-arylation of methoxyamine

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通过 B i>位Ta置换对 AB i> O₄型EuNbO₄的热学和力学性质进行优化 Article

陈琳, 冯晶

《工程（英文）》 2020年第6卷第2期 页码 177-184 doi: 10.1016/j.eng.2019.12.006

摘要： 铁弹性的ABO₄型RETaO₄陶瓷和RENbO₄陶瓷（RE表示稀土）是具有潜在应用价值的热障涂层（TBC）材料，p>

关键词：热障涂层，稀土铌酸盐，置换，热导率，热膨胀系数，杨氏模量

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Cytochrome P450 monooxygenase specific activity reduction in wheat

Kangxin HE,Qixing ZHOU

《环境科学与工程前沿（英文）》 2016年第10卷第2期 页码 270-275 doi: 10.1007/s11783-015-0813-y

摘要： Roxithromycin, as widely used medicine and livestock growth promoter, arouses concern because its occurrence and persistence in soil environments. However, effects of roxithromycin in higher plants are still vague. Accordingly, we hypothesized that roxithromycin-contaminated soil may exhibits ecotoxicological effects in wheat ( ). In this study, effects induced by a gradient concentration of roxithromycin stress (0.01, 0.1, 1, 10, and 100 mg·kg ) was investigated in a 7-d soil test in . Results indicated that the specific activity of cytochrome P450 (CYP450) monooxygenase was decreased dramatically with the concentration of roxithromycin in soil. The IC value was 8.78 mg·kg of roxithromycin. On the contrary, the growth related endpoints (i.e., the germination percentage, the biomass and the height), the content related endpoints (i.e., soluble protein content and CYP450 content), and the superoxide dismutase (SOD) activity failed to reveal the roxithromycin-induced effects. Further analysis revealed that the CYP450 monooxygenase specific activity reduction was enzymatic mechanism mediated, other than oxidative stress induced. We conclude that the soil roxithromycin declined the CYP450 monooxygenase activity in by the inhibition of the enzymatic mechanism. Further efforts can include, but are not limited to, investigation of joint effects induced by combined exposure of roxithromycin and the pesticides and evaluation of the similar effects in other higher plants.

关键词： roxithromycin toxic effect cytochrome P450 monooxygenase soil environment Triticum aestivum biomarker

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Traces and echoes of De Architecturai> by Marcus Vitruvius Pollio in the work of Xu Guangqi in 17th

Michela CIGOLA,Yibing FANG

《机械工程前沿（英文）》 2016年第11卷第1期 页码 3-11 doi: 10.1007/s11465-015-0359-5

摘要：
This study aims to investigate the role played by Xu Guangqi (1562–1633), minister of the Ming Dynasty, in the development of European scientific and technical knowledge in China between the 16th and 17th centuries by analyzing a book of Western technology that he wrote, namely, Taixi Shuifa (On Western Hydraulics). Several Western books related to machine knowledge are searched to trace the source of the illustrations in Taixi Shuifa. We found that Archimedes’ screw and Ctesibius’ machine, which are included in Vitruvius’ De Architectura volumes, also appear in the work of Xu Guangqi.

关键词： Vitruvius’ De Architectura Xu Guangqi’s Taixi Shuifa Jesuit missionaries Italian Renaissance drawing representation

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标题作者时间类型操作

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

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

期刊论文



Inhibition of NO emission by adding antioxidant mixture in

A. PRABU,R. B. ANAND

期刊论文



Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

期刊论文



High specificity detection of Pb

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

期刊论文



Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Kolozhvari, Irina I. Ivanova

期刊论文



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

期刊论文



用高光谱发光法研究Cu(In_xi>,Ga_1–xi>)Se₂ (CIGS)模块中由P1引起的功率损耗的成因

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

期刊论文



Development of a new method for RMR and Q classification method to optimize support system in tunneling

Asghar RAHMATI,Lohrasb FARAMARZI,Manouchehr SANEI

期刊论文



抗白粉病基因 Pm40i> 在我国“后 Pm21i> 时代”小麦育种中的重要作用

唐圣雯,胡玉亭,钟胜福,罗培高

期刊论文



NiFeRuO_xi> nanosheets on Ni foam as an electrocatalyst for efficient

期刊论文



2014—2016年食品动物源RE-cmeABCi>阳性弯曲菌流行与耐药性现状

刘德俊, 刘蔚雯, 李星, 姚红, 沈张奇, 汪洋, 沈建忠

期刊论文



A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

期刊论文



通过 B i>位Ta置换对 AB i> O₄型EuNbO₄的热学和力学性质进行优化

陈琳, 冯晶

期刊论文



Cytochrome P450 monooxygenase specific activity reduction in wheat

Kangxin HE,Qixing ZHOU

期刊论文



Traces and echoes of De Architecturai> by Marcus Vitruvius Pollio in the work of Xu Guangqi in 17th

Michela CIGOLA,Yibing FANG

期刊论文