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Computer Modeling in Engineering & Sciences 2018年第1期114卷 75-93页

作者： Chengquan Wang Yonggang Shen Yun Zou Tianqi Li xiaoping feng School of Environment and Civil Engineering Jiangnan UniversityWuxiChina214122 College of Civil Engineering and Architecture Zhejiang UniversityHangzhouChina310058

The failure behavior of the precast prestressed concrete T girder was investigated by destructive test and finite-element analysis,and the mid-span deflection,girder stiffness and the variation of the cross section strain in the loading process were obtained,and the mechanical properties,mechanical behavior,elastic and plastic behavior and ultimate bearing capacity of T girder with large span were ***,the relationship between the beam stiffness degradation,the neutral axis in cross-section,steel yielding and concrete cracking are investigated and analyzed.A method was proposed to predict the residual bearing capacity of a bridge based on the variation of the position of the cross section strain distribution and the section neutral axis,which provided a theoretical basis for predicting the stiffness detection and carrying capacity assessment of prestressed concrete beam.

关键词： Prestressed concrete T-beam destructive testing finite-element stiffness plane-section assumption

The Effect of Na_(2)O/B_(2)O_(3)Composition Ratio on the Structure and Properties of Cu^(+)Doped Luminescent Glass

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Journal of Wuhan University of Technology(Materials Science) 2024年第6期39卷 1379-1390页

作者： LI Bohan feng Jinyang feng xiaoping ZHAO Xiujian WU Donghua MA Xiao State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Yangtze Optical Fibers and Cable Joint Stock Limited Company Wuhan 430074China

Cu^(+)-doped alkali borosilicate glasses with different Na_(2)O contents were prepared by the melting method,and the effects of different R values(R=Na_(2)O/B_(2)O_(3))on the structure,ion presence state and luminescence properties of Cu^(+)-doped alkali borosilicate glasses were *** analysis by FT-IR and Raman spectroscopy shows that,with the increase of R value of the glass,the[BO_(3)]in the structure of Cu^(+)-doped alkali borosilicate glass transforms into[BO_(4)]and the number of non-bridging oxygen in the glass network appears to be slightly *** absorption spectra and EPR analysis reveal that the Cu^(+)content in the glass gradually decreases and the Cu^(2+)content gradually increases as the R value of the glass *** and PL tests further indicate that the transformation of the octahedral coordination structure of Cu^(+)to the octahedral coordination structure of Cu^(2+)and the cubic coordination structure of Cu^(+)occurs in the glass as the R value of the glass *** transformation can effectively reduce the concentration quenching phenomenon of Cu^(+)and improve the fluorescence luminescence intensity of the glass ***,the samples were found to have luminescence tunability as well as good thermal stability.

关键词： R value glass structure Cu ion valence luminescence

Preparation and Commercial Application of ZHC-01 Hydrocracking Catalyst

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China Petroleum Processing & Petrochemical Technology 2007年第2期9卷 43-47页

作者： Xu Xuejun Liu Dongxiang Wang Haitao feng xiaoping Wang Jifeng Fushun Research Institute of Petroleum and Petrochemicals Fushun 113001

The ZHC-01 hydrocracking catalyst, characterized by high hydrogenation activity, good selectivity for middle distillates, strong resistance to nitrogen poisoning, was prepared by co-gelling. The catalyst is not only suited to the single-stage hydrocracking process, but also to the first stage of serial hydrocracking process. In parallel with the fully loaded operation of the 1.4 Mt/a hydrocracking unit at the SINOPEC Qilu Petrochemical Company, a pilot test of the ZHC-01 catalyst was also carried out on the hydrocracking unit. The test results indicated that the activity, the yield of major target products and quality of the ZHC-01 catalyst could comply with the design requirements for the hydrocracking unit, and this catalyst could be applied in the hydrocracking unit. The commercial test results showed that the ZHC-01 catalyst, featuring good activity, stability, and flexibility in production, not only could meet the demand for producing environmentally friendly middle distillates, but could also increase the resource of optimized steam cracking feedstock.

关键词： hydrocracking catalyst pilot plant test commercial application

Ductility and Ultimate Capacity of Concrete-Filled Lattice Rectangular Steel Tube Columns

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Structural Durability & Health Monitoring 2018年第2期12卷 99-110页

作者： Chengquan Wang Yun Zou Tianqi Li Jie Ding xiaoping feng Tiange Lei Jiangnan University No.1800Wuxi214000China

A kind of concrete-filled lattice rectangular steel tube(CFLRST)column was put *** numerical simulation was modeled to analyze the mechanical characteristic of CFLRST *** comparing the load-deformation curves from the test results,the rationality and reliability of the finite element model has been confirmed,moreover,the change of the section stiffness and stress in the forcing process and the ultimate bearing capacity of the column were *** on the model,the comparison of ultimate bearing capacity and ductility between CFLRST column and reinforced concrete(RC)column were also *** results of the finite element analysis show that the loading process of CFLRST column consists of elastic stage,yield stage and failure *** failure modes are mainly strength failure and failure of elastoplastic *** column has higher bearing capacities in comparison with reinforced concrete columns with the same steel *** addition,the stiffness degeneration of CFLRST column is slower than RC column and CFLRST column has good ductility.

关键词： Steel-concrete composite structure concrete-filled lattice rectangular steel tube column nonlinear finite element ultimate strength ductility

Adenosine cyclic phosphate with ultrasonic-assisted pectinase extraction alleviated allergic reactions in RBL-2H3 through inhibiting the influx of intracellular Ca^(2+)

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Food Science and Human Wellness 2023年第3期12卷 832-841页

作者： Qiao Bai xiaoping feng Yu Wang Chunyu Wu Ye Liu Jiao Sun Tianli Yue Fangyu Long College of Food Science and Engineering Northwest A&F UniversityYangling 712100China Beijing Key Laboratory of Plant Resource Research and Development Beijing Technology and Business UniversityBeijing 100048China Department of Breast Surgery The Affi liated Hospital of Qingdao UniversityQingdao 266000China

Jujube contains abundant cyclic adenosine monophosphate(cAMP)and the ultrasonic-assisted pectinase extraction(UAPE)conditions for obtaining the maximum cAMP yield from jujube were *** array design was applied to evaluate the effects of 4 variables by UAPE on cAMP *** results showed that the optimal cAMP yield(783.0μg/g)was derived at ratio of liquid to solid 5 mL/g,ratio of pectinase to raw material 1.5%,time 60 min and temperature 40℃.Moreover,the effect of cAMP on the anti-allergic function of action induced by immunoglobulin E(IgE)and its meschanism was investigated through establishing the sensitized cell model in rat basophilic leukemia(RBL-2 H3)cells using dinitrophenylated(DNP)-bovine serum albumin(BSA)-*** results showed that cAMP interfered with sensitized cells,effectively inhibited the occurrence of basophil degranulation in dose dependence,and significantly reduced the activity ofβ-hexosamindase(β-hex),at the optimal concentration of 50μg/*** level of anti-inflammatory factor interleukin-10(IL-10)was promoted and the content of pro-inflammatory factor tumor necrosis factor-α(TNF-α)was suppressed by *** addition,influx of intracellular Ca^(2+) was repressed *** results demonstrate that jujube cAMP regulated the cytokine balance in the allergy pathway through blocking the influx of extracellular Ca^(2+),with the prevention of allergy symptoms.

关键词： Ultrasonic-assisted pectinase extraction Cyclic adenosine monophosphate Rat basophilic leukemia cells Ca^(2+)influx Allergy

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Holocene thermal maximum mode versus the continuous warming mode:Problems of data-model comparisons and future research prospects

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Science China Earth Sciences 2023年第8期66卷 1683-1701页

作者： Fahu CHEN Yanwu DUAN Shuo HAO Jie CHEN xiaoping feng Juzhi HOU Xianyong CAO Xu ZHANG Tianjun ZHOU Group of Alpine Paleoecology and Human Adaptation(ALPHA) Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China

The Holocene,the most recent interglacial,provides an important time window for evaluating current global warming and predicting future temperature *** the development of new temperature proxies and improvements in climate models,significant progress has been made in understanding Holocene temperature ***,a major debate persists about whether global temperatures during the Holocene followed a pattern of gradual warming from the end of the Last Glacial Maximum,which culminated in a temperature maximum in the early to middle Holocene,followed by gradual cooling in the late Holocene(the thermal maximum mode);or whether there was a continuous warming trend that continued to the present day(the continuous warming mode).Significant discrepancies exist between different proxy records as well as between proxy records and models,which have resulted in the “Holocene temperature conundrum” that has challenged paleoclimatologists for the past ***,we summarize the progress made to date in the study of Holocene temperature change via proxy reconstructions,climate model simulations,and paleoclimate data *** emphasize that the current research has limitations in terms of the multiplicity and seasonality of proxy records,the spatial heterogeneity of temperature records,and the incorporation of feedback processes(e.g.,vegetation,cloudradiation feedback) in climate *** limitations have hindered a comprehensive understanding of the processes and mechanisms of Holocene temperature *** solve the “Holocene temperature conundrum”,it is necessary to strengthen theoretical research on climate proxies from the perspective of the underlying processes and mechanisms,elucidate the seasonal response of various temperature proxies,emphasize regional differences in temperature changes,and expand quantitative temperature reconstructions to areas with limited ***,it is also necessary to improve the simulation performance of complex

关键词： Holocene temperature change Thermal maximum mode Continuous warming mode Seasonality of proxies Climate simulations

Seabuckthorn juice alleviates allergic symptoms in shrimp-induced food allergy mice

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Food Science and Human Wellness 2023年第3期12卷 783-788页

作者： Hong Ren Xiaofan Zhu Shiyu Zhai xiaoping feng Zhuomin Yan Jiao Sun Ye Liu Zhenpeng Gao Fangyu Long College of Food Science and Engineering Northwest A&F UniversityYangling 712100China Department of Breast Surgery The Affiliated Hospital of Qingdao UniversityQingdao 266000China China-Canada Joint Laboratory of Food Nutrition and Health(Beijing) Beijing Technology&Business UniversityBeijing 100048China

Tropomyosin(TM)in shrimp is one of the predominant causes of food allergy around the *** the present study,the effect of seabuckthorn juice against TM-induced shrimp allergy was investigated in BALB/c *** symptoms,spleen index,intestinal section and diarrhea were measured in shrimp allergy *** the results,seabuckthorn juice suppressed the lesions in jejunum tissue,diarrhea and allergic symptoms in shrimp allergy *** juice also reduced serum concentrations of tumor necrosis factor-a(TNF-α)as well as immunoglobulin E(IgE)and stimulated the secretion of interleukin-10(IL-10)in mice with shrimp *** together,our findings suggest that increased IL-10 by seabuckthorn juice inhibits Th2 cytokine production to suppress shrimp allergic ***,seabuckthorn juice also regulates shrimp allergy by reducing jejunum lesions,inhibiting levels of TNF-αand IgE.

关键词： Shrimp Seabuckthorn juice Allergy BALB/c mouse model

热处理工艺对形状记忆合金Cu-Zn-Al性能的影响

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热加工工艺 2008年第10期37卷 74-75页

作者：冯小平西华大学材料科学与工程学院四川成都610039

设计了成分为70.1Cu-26.4Zn-3.5A1(wt%)的Cu基形状记忆合金并在合金中添加微量元素Ti、B,系统研究了Cu基形状记忆合金的制备方法及形状记忆效应与热处理工艺之间的关系。实验结果表明,成分为70.1Cu-26.4Zn-3.5A1(wt%)的合金在高温直接... 详细信息

设计了成分为70.1Cu-26.4Zn-3.5A1(wt%)的Cu基形状记忆合金并在合金中添加微量元素Ti、B,系统研究了Cu基形状记忆合金的制备方法及形状记忆效应与热处理工艺之间的关系。实验结果表明,成分为70.1Cu-26.4Zn-3.5A1(wt%)的合金在高温直接淬火时发生马氏体相变,马氏体形态为板条状,亚结构为堆垛层错。合金回复率随淬火温度的增加先升高后降低,在850℃时硬度较高。

关键词：形状记忆合金马氏体相 Cu-Zn-Al合金

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双金属复合锤头的铸造工艺

热加工工艺 2008年第1期37卷 87-89,92页

作者：冯小平西华大学材料科学与工程学院四川成都610039

以高铬铸铁、碳钢为原材料,采用镶铸工艺制造高铬铸铁/碳钢双金属复合锤。通过对双金属复合过程中各种参数的理论计算和实际试验,得出一套完整的优化参数和完整的双金属复合铸造锤头的理论,为双金属复合铸造锤头技术的推广提供支持。

关键词：双金属锤头工艺

EXPERIMENTAL STUDY OF RADIOIMMUOGUIDED SURGERY IN OVARIAN CARCINOMA

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Chinese Medical Sciences Journal 1998年第2期13卷 85-88页

作者：钱和年李小平冯捷

Objectival. To prepare a radioimmunoguided surgery （RIGS） system including radio-nuclides hand- held gamma detecting probe （GDP） with signal processing control unit, specific monoclonal antibody （MAb）, technique of labeling as well as detection of ovarian carcinoma in nude mice bearing human ovari-an carcinoma. Metals. MAb COCl83B2, produced in our laboratory was used to prepare the F （ah’）2, fragment by ficin digestion. 99mTc labeling of COC183 B2-F（ab’）2, and normal mice IgG were prepared according to im- proved pretining method. GDP and control unit were made by Chinese Atomic Energy Research Institute. Different groups of nude mice bearing human ovarian carcinoma with ascites were administered with differ- ent dosages of 99mTo COCl83 B2-F（ab’）2, and their tissues measured by GDP in vivo and compared with gamma well counts after dissection in vitro. Results. 99mTc labeled COCl83B2-F（ab’）2, yielded a labeling rate of over 90%, and a good immunoac- tivity. The detections of carcinoma tissue by GDP showed a T/NT ratio of 2: 1 as positive for cancer. The smallest carcinoma detected was 0. 2cm × 0.1 cm and the nearest distance between carcinoma and normal tissue was 0. 2cm. Conclusions. The above studies proved that ficin can be used to digest MAbs with high yields and good immunoactivity of F（ab’）2. Our RIGS system with 99mTo labeled COC183 B2-F（ab’）2 and GDP can hope-fully be used clinically for ovarian carcinoma detection.

关键词： ovarian carcinoma monoclonal antibody F(ab')_2 radioimmunoguided surgery