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Controlled Growth Morphology of Porous Nanocrystal Iron Oxide by Electrodeposition

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Chemical Research in Chinese Universities 2009年第5期25卷 595-599页

作者： LI Li shi ke-ying key Laboratory of Functional Inorganic Material Chemistry Ministry of Education Laboratory of Physical Chemistry School of Chemistry and Materials Science Heilongjiang University Harbin 150080 P. R. China

Fe（Ⅱ） was deposited into the bottom of the mesopores of highly ordered large caged cubic mesoporous silica by electrodeposition. And the deposited Fe mesoporous silica thin film was treated by 1%---4% HF to remove the SiO2 template and then calcined. It was found that nanowire bundles, dendritic plates of porous iron oxide, dense parallel backbones of porous iron oxide were obtained at -1.4-- -1.6 V and 0.08--0.1 mol/L electrolyte concentration after calcinations; the dendritic pattern of porous iron oxide film templated by the SBA-16 film was obtained in macrostructure at a higher absolute value of cathode potential（-1.7-- -1.8 V） and a lower electrolyte concentration（0.02-0.05 mol/L）, the dendritic pattern of porous iron oxide film could copy the microstructure of SBA-16 film; Fe（II） nanowires grew and formed in one dimension（1D） and two-dimension（2D） electrocrystallization at a potential of-l.6-- -1.7 V and an electrolyte concentration of 0.05 mol/L, and the shape of the ID or 2D crystalline iron oxide nanowires calcined was similar to the original shape of the SBA-16 channels. The desired morphology and size of porous nanocrystal iron oxide can be obtained by adjusting the applied potential value and electrolyte concentration, and all kinds of morphologies of porous nanostructure crystal iron oxide can be prepared.

关键词： Electrocrystallization Deposition Porous iron oxide Morohology

Clinical Observation of Bevacizumab Combined with S-1 in the Treatment of Pretreated Advanced Esophageal Carcinoma

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Chinese Medical Sciences Journal 2016年第4期31卷 221-227页

作者： ke-ke Nie Chuan-xin Geng Ling Zhang shi-chao Liu Zhong-fa Zhang Rong Wang Xiao Zou You-xin Ji Department of Oncology Qingdao Cancer Hospital Department of Oncology Qingdao Central Hospital2nd Affiliated Hospital of Qingdao University

Objective To investigate the clinical effects and safety of bevacizumab combined with S-1 as the second-line treatment of recurrent and/or metastatic esophageal cancer after chemoradiation. Methods Patients with recurrent or metastatic esophageal cancer after chemoradiation were treated with bevacizumab and S-1. Bevacizumab was used by intravenous infusion, 7.5mg/kg body weight on day 1; S-1 was used by oral at 80mg/m^2·d on day 1-14, 21 days as a cycle of treatment and repeated until either progressive disease or intolerable toxicity occurred. Chest CT were performed and RECIST 1.1 was used for response evaluation. Kaplan-Meier method was used for survival analysis. Side effects were recorded and analyzed. Results Totally 78 patients were enrolled in the study, including 67 squamous cell carcinoma and 11 adenocarcinoma histologically. The overall response(CR+PR) rate was 22.4%(17/76) and disease control(CR+PR+SD) rate was 61.8%(47/76) respectively. The median follow-up time was 20 months(range from 9 to 44 months). The median progression-free survival(PFS) was 4.9 months(95% CI 4.4-5.5) and the median overall survival(OS) was 8.1 months(95% CI 7.6-9.2). The median PFS and OS of patients with metastasis diseases were 6.2 months(95% CI 3.3 to 6.3) and 8.5 months(95% CI 5.8 to 11.2), where PFS was longer than that of patients with local regional recurrence(median 5.0 months, 95% CI 3.0 to 5.5, P=0.017) and OS was longer than that of patients with regional disease and metastasis(median 8.0 months, 95% CI 4.6 to 9.5, P=0.010). The common adverse effects were mild to moderate neutropenia(84.2%), grade Ⅰ -Ⅱ hand and foot syndrome(51.3%), grade Ⅰ -Ⅱ nausea(48.7%), mild epistaxis(30.1%) and mild vomiting(14.5%). Esophageal bleeding occurred in 7.9% of patients. One patient(1.3%) died from massive bleeding which was caused by esophageal perforation. Conclusion Bevacizumab combined with S-1 was effective and safe for esophageal cancer patients who had recurrent or metastatic

关键词： anti-angiogenesis bevacizumab chemoradiation S-1 esophageal carcinoma

A new streamline diffusion finite element method for the generalized Oseen problem

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Applied Mathematics and Mechanics(English Edition) 2018年第2期39卷 291-304页

作者： Chao XU Dongyang shi xin LIAO Faculty of Mathematics and Physics Education Luoyang Institute of Science and Technology School of Mathematics and Statistics Zhengzhou University

This paper aims to present a new streamline diffusion method with low order rectangular Bernardi-Raugel elements to solve the generalized Oseen equations. With the help of the Bramble-Hilbert lemma, the optimal errors of the velocity and pressure are estimated, which are independent of the considered parameter e. With an interpolation postprocessing approach, the superconvergent error of the pressure is obtained. Finally, a numerical experiment is carried out to confirm the theoretical results.

关键词： streamline diffusion method Bernardi-Raugel element Oseen problem,superconvergent error estimate

Pseudo-dynamic test and numerical simulation of high-strength concrete frame structure reinforced with high-strength rebars

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Earthquake Engineering and Engineering Vibration 2011年第2期10卷 303-311页

作者： Chen xin Yan shi Ji Baojian School of Civil Engineering Shenyang Jianzhu University Shenyang 110168 China School of Civil ＆ Hydraulic Engineering Dalian University of Technology Dalian 116024 China

This paper describes an investigation of a high-strength concrete frame reinforced with high-strength rebars that was tested in the structure engineering laboratory at Shenyang Jianzhu University. The frame specimen was pseudo- dynamically loaded to indicate three earthquake ground motions of different hazard levels, after which the test specimen was subjected to a pseudo-static loading. This paper focuses on the design, construction and experiment of the test frame and validation of the simulation models. Research shows that a high-strength concrete frame reinforced with high-strength rebars is more efficient and economical than a traditional reinforced concrete frame structure. In addition to the economies achieved by effective use of materials, research shows that the frame can provide enough strength to exceed conventional reinforced concrete frames and provide acceptable ductility. The test study provides evidence to validate the performance of a high- strength concrete frame designed according to current seismic code provisions. Based on previous test research, a nonlinear FEM analysis is completcd by using OpenSees software, The dynamic responses of the frame structure are numerically analyzed, The results of the numerical simulation show that the model can calculate the seismic responses of the frame by OpenSees. At the same time, the test provides additional opportunities to validate the performance of the simulation models.

关键词： high-strength concrete pseudo dynamic test seismic response analysis frame structure finite elementmethod OpenSees

AN INTEGRO-DIFFERENTIAL PARABOLIC VARIATIONAL INEQUALITY ARISING FROM THE VALUATION OF DOUBLE BARRIER AMERICAN OPTION

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Journal of Systems Science & Complexity 2014年第2期27卷 276-288页

作者： SUN Yudong shi Yimin GU xin Department of Applied Mathematics Northwestern Polytechnical University Department of Methodology and Statistics Utrecht University

This paper studies the nonlinear variational inequality with integro-differential term arising from valuation of American style double barrier option. First, the authors use the penalty method to transform the variational inequality into a nonlinear parabolic initial boundary problem(i.e., penalty problem). Second, the existence and uniqueness of solution to the penalty problem are proved by using the Scheafer fixed point theory. Third, the authors prove the existence of variational inequality' solution by showing the fact that the penalized PDE converges to the variational inequality. The uniqueness of solution to the variational inequality is also proved by contradiction.

关键词： American style barrier option existence integro-differential uniqueness variational inequality.

Methods of reduction for Lagrange systems on time scales with nabla derivatives

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Chinese Physics B 2017年第1期26卷 243-249页

作者： shi-xin Jin Yi Zhang School of Science Nanjing University of Science and Technology Nanjing 210009 China College of Civil Engineering Suzhou University of Science and Technology Suzhou 215011 China

The Routh and Whittaker methods of reduction for Lagrange system on time scales with nabla derivatives are *** equations of motion for Lagrange system on time scales are established, and their cyclic integrals and generalized energy integrals are given. The Routh functions and Whittaker functions of Lagrange system are constructed, and the order of differential equations of motion for the system are reduced by using the cyclic integrals or the generalized energy integrals with nabla derivatives. The results show that the reduced Routh equations and Whittaker equations hold the form of Lagrnage equations with nabla derivatives. Finally, two examples are given to illustrate the application of the results.

关键词： reduction of dynamical system cyclic integral energy integral time scales

Effects of Austenizing Temperature on Reprecipitation of BN

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Journal of Iron and Steel Research International 2013年第9期20卷 99-104页

作者： YIN shi-ke A Rong Mitsuru Tanino China Iron and Steel Research Institute Group Fundamental Research Laboratory Nippon Steel Co.

Most of BN was precipitated around the spherical MnS and formed the compound of MnS and BN during the isothermal treatment at 850 ℃ after austenizing at 950-1050 ℃. Most of MnS was transformed into polygon when austenized at 1 150 ℃ or above, which could not be the nuclei of BN anymore. During the insulation process at 850 ℃, MnS kept the state of monomer. The compound of MnS and BN at earlier time was of fine polycrystalline in spherality and BN was formed as a plate-like monocrystal on a certain part of the polycrystalline when its dimension reached 0.6 μm.

关键词： austenizing temperature BN repreeipitation isothermal treatment

Upconversion multicolor tuning of NaY(WO_4)_2:Tb^(3+) with Eu^(3+) doping

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Journal of Rare Earths 2018年第9期36卷 911-916页

作者： Zhongxiang shi Jing Wang xin Guan Liaoning key Laboratory for Fabrication and Application of Superfine Inorganic Powders Dalian Jiaotong University

A series of Tb3＋ and Eu3＋ co-doped NaY（WO4）2 phosphors were synthesized by hydrothermal *** crystal structure,morphology,upconversion luminescent properties,the energy transfer from Tb3＋ to Eu3＋ions and the 5 D4→ 7 F5 transition of the Tb3＋ ion in NaY（WO4）2：Tb3＋,Eu3＋ phosphors were investigated in *** results indicate that all the synthesized samples are of pure tetragonal phase NaY（WO4）***,the micrometer-sized needle spheres and excellent dispersion of the particles are obtained by adding polyethylene glycol（PEG-2000） as the *** of NaY（WO4）2：Tb3＋,Eu3＋ exhibit the492 nm blue emission peak,546 nm green emission peak,595 nm orange emission peak and 616 nm red emission peak under 790 nm *** energy transfer from Tb3＋ to Eu3＋ is a resonant transfer,in which electric dipole-dipole interaction plays a leading *** adjusting the doping concentration of Eu3＋ in NaY（WO4）2： 1.0 mol%Tb3＋,xmol%Eu3＋ phosphors,the emitting color of UC phosphors can be tuned from green to red.

关键词： Up-conversion luminescence NaY(WO4)2:Tb^3+ Eu^3+ Polyethylene glycol Energy transfer Rare earths

Numerical investigation of the casing treatment mechanism with a single circumferential groove

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Science China(Physics,Mechanics & Astronomy) 2013年第2期56卷 353-365页

作者： shi ke CHEN Haixin FU Song School of Aerospace Tsinghua University

The paper investigates the effect of a single circumferential groove casing treatment(CGCT) on a transonic compressor rotor *** particular,the effect of the groove at different axial locations on the flow field is studied in detail and stall margin improvement is also *** present results show that the groove close to the leading edge plays a crucial role in stabilizing the near stall flow structures and,hence,improves the stall *** groove at the mid-chord-section of the blade can help exchange and transfer momentums between different directions,and suppress the flow unsteadiness,leading to increased efficiency in rotor performance and extended operation *** groove located near the blade trailing edge has limited effects on stall margin improvement and may cause additional penalty in *** comparison with the recent work on CGCT,some common flow physics can be observed.

关键词： compressor casing treatment circumferential groove transonic rotor stall margin