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Steel Temperature Compensating Model With Multi-Factor Coupling Based on Ladle Thermal State

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Journal of Iron and Steel Research International 2012年第5期19卷 9-16页

作者： wu peng-fei XU An-jun TIAN Nai-yuan HE Dong-feng State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Combined with the parameters of the production process of a steel factory, numerical simulations for a new ladle from preheating to turnover are conducted using the finite element analysis system software （ANSYS）. The measured data proved that the simulated results are reliable. The effects of preheating time, thermal cycling times, and empty package time on steel temperature are calculated, an ideal preheating time is provided, besides, based on the analysis of a single factor and use the nonlinear analysis method, a steel temperature compensating model with di- versified coupling factors is proposed, with the largest error of the present coupling model at 1. 462 ~C, and the er- rors between actual and target steel temperature in tundish after the model is applied to practical production are basi- cally controlled within -4-6 ~C, which can meet the accuracy of the manufacturer and has a practical guiding significance for the production in steelmaking workshops.

关键词： ladle thermal state multiple-factor coupling numerical simulation compensation model

Aggregation Behavior and Structure of Associated Polyacrylamide Hydrophobically Modified with 2-Phenoxylethylacrylate

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Chemical Research in Chinese Universities 2009年第6期25卷 957-962页

作者： DAI Yu-hua wu fei-peng LI Miao-zhen WANG Er-jian Department of Materials Science and Engineering Beijing Institute of Petrochemical Technology Beijing 102617 P. R. China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 P. R. China

The aggregation behavior and structure of hydrophobically modified block copolymers of acrylamide and 2-phenoxylethylacrylate were investigated by viscometry, 1H NMR relaxation, 2D NOESY, fluorescence and dynamic light scattering. It Was found that the aggregation behavior was strongly dependent on the concentration of polymer solution and the hydrophobe contents. With varying concentration from 2.0, 6.0, 8.0 to 12.0 g/L, there were different aggregate morphologies distributed in aqueous solutions, such as monopolymer chain, micelle-like aggregate, multi-micelle aggregate and cross-linked network. According to the model of aggregation, it can give a reasonable explanation on the large magnitude enhancement of viscosity with the increasing of polymer concentration. Additional data of 2D NOESY and fluorescence show that the copolymer with higher hydrophobe content（molar fraction≥ 1%） is likely to form intra-molecular association.

关键词： Aggregation behavior and structure Hydrophobically modified Copolymer P(AM/POEA)

Polycystic Ovary Syndrome is not Associated with Offspring Birth Weight: A Mendelian Randomization Study

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Biomedical and Environmental Sciences 2021年第2期34卷 170-174页

作者： wu peng fei LI Rui Zhuo ZHANG Wan SU Zhong Zhen LIN Yu Hong School of Life Sciences Central South UniversityChangsha 410008HunanChina Department of Neurology Beth Israel Deaconess Medical CenterBoston 02115MAUSA Department of Ultrasonography Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhai 519000GuangdongChina Department of Biology Boston UniversityBoston 02215MAUSA

Polycystic ovary syndrome(PCOS) is a common metabolic and hormonal disorder afflicting approximately 5%–20% of all women of reproductive age~([1]). PCOS is characterized with hyperandrogenism,oligo-anovulation, and a polycystic ovarian morphology. The syndrome features heterogeneous manifestations, such as hirsutism, menstrual dysfunction, and obesity. Women with PCOS are at higher risk of developing multiple metabolic comorbidities and subsequent cardiovascular complications even beyond childbearing age.

关键词： cardiovascular cystic obesity

Holographic grating fabrication for wide angular bandwidth using polymer thin films

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Optoelectronics Letters 2021年第1期17卷 1-4页

作者： wu peng-fei wu Zi-jun ZHUANG Yu LIU Hong-liang Institute of Modern Optics Nankai UniversityTianjin 300071China Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Tianjin 300350China Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology Tianjin 300350China

To increase the angular bandwidth of volume holographic grating, we fabricate holographic gratings based on grating multiplexing technique by using thin films of photopolymers and polymer dispersed liquid crystals. Experimental results confirm that the liquid crystal materials increase the refractive index modulation of the grating, enabling high diffraction efficiency with wide angular response compared to pure polymer materials. We observe that the fabricated holographic grating has near 80% of diffraction efficiency and about 18° of angular bandwidth, which can be further improved by modifying the liquid crystal/polymer mixtures and the grating multiplexing technique. The grating can be used to fabricate holographic waveguide structures for emerging applications in the near-eye display systems.

关键词： technique. waveguide holographic

Nonresonant Optical Nonlinearities of Surface Chemically Modified ZnO Composite Nanoparticles

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Chinese Physics Letters 1998年第1期15卷 27-29页

作者： WANG Rong-yao wu Xiao-chun ZOU Bing-suo WANG Li wu peng-fei LIU Shao-mei WANG Jin-guo XU Ji-ren Optical Physics Laboratory Institute of PhysicsChinese Academy of SciencesBeijing 100080

With surface chemical modification,we have obtained core-shell structure ZnO *** nonresonant third-order nonlinear optical refraction of this new composite material was found to be-3.8×10^(-10) esu by Z-scan measurements with a femtosecond pulsed *** ultrafast nonlinear response time~250 fs measured by time-resolved pump-probe techniques suggests that the nonlinearity of this new material originates mainly from a rapid electronic polarization process or virtual process such as the optical Stark effect.

关键词： polarization pump Nonlinear

Modified Glasgow Prognostic Score, and Neutrophil/lymphocyte and Platelet/lymphocyte Ratios in Different Stages of Silicosis

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维普期刊数据库

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Biomedical and Environmental Sciences 2019年第5期32卷 376-379页

作者： HE La Gu wu peng fei peng Yan Hua FENG Juan ZHONG Dai Ming ZHANG Gui Hua ZENG Lei ZHONG Yu Min WANG Xiao Ye YUAN Hua Min Department of Laboratory Medicine Hunan Prevention and Treatment Center for Occupational DiseasesChangsha 410000HunanChina School of Life Sciences Center for Medical GeneticsCentral South UniversityChangsha 410000HunanChina

Until now, although comprehensive management strategies have improved treatment, there are no treatments to alleviate symptoms and slow disease progression[1]. In the past few decades, there has been increasing evidence that inflammation plays a very important role in silicosis. Injury-induced inflammation is an effective strategy to remove harmful stimuli and initiate a healing process. However, it might be harmful to the organism and result in a permanent disease state if the inflammation is prolonged[2].

关键词： Silicosis Prognostic Score

The analysis of second-order sloshing resonance in a 3-D tank

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Journal of Hydrodynamics 2014年第2期26卷 309-315页

作者：张洪生吴鹏飞刘文白 College of Ocean Science and Engineering Shanghai Maritime University

Based on the potential theory and perturbation techniques, the problem of second-order sloshing in a three-dimensional tank in combination with surge and sway motions is analyzed. When excitation is applied in both horizontal directions, the second-order resonance can occur when the sum frequency or the difference frequency of any two excitation components is equal to one of the natural frequencies. The resonance can also occur when the sum or difference frequency of one of the excitation frequencies and one of the natural frequencies is equal to another natural frequency.

关键词： sloshing second-order resonance three dimensions coupling terms

The inversion of the real kinematic properties of coronal mass ejections by forward modeling

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Research in Astronomy and Astrophysics 2011年第2期11卷 237-244页

作者： You wu 1 and peng-fei Chen 1,2 1 Department of Astronomy,Nanjing University,Nanjing 210093,China 2 Key Lab of Modern Astron.and Astrophys.,Ministry of Education,Nanjing 210093,China Department of Astronomy Nanjing University Nanjing 210093 China Key Lab of Modern Astron. and Astrophys. Ministry of Education Nanjing 210093 China

Kinematic properties of coronal mass ejections （CMEs） suffer from projection effects,and it is expected that the real velocity should be larger and the real angular width should be smaller than the apparent *** attempts have been taken to correct the projection effects,which however led to an inflated average velocity probably due to the biased choice of CME *** order to estimate the overall influence of the projection effects on the kinematic properties of the CMEs,we perform a forward modeling of real distributions of CME properties,such as the velocity,the angular width,and the latitude,by requiring their projected distributions to best match *** a matching is conducted by Monte Carlo *** to the derived real distributions,we found that （1） the average real velocity of all non-full-halo CMEs is about 514 km s-1,and the average real angular width is about 33°,in contrast to the corresponding apparent values of 418 km s-1 and 42.7° in observations;（2） For the CMEs with the angular width in the range of 20°-120°,the average real velocity is 510 km s-1 and the average real angular width is 43.4°,in contrast to the corresponding apparent values of 392 km s-1 and 52° in observations.

关键词： Sun: coronal mass ejections (CMEs) -- methods: statistical -- methods:numerical

Suberoylanilide hydroxamic acid overcomes erlotinib-acquired resistance via phosphatase and tensin homolog deleted on chromosome 10-mediated apoptosis in non-small cell lung cancer

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Chinese Medical Journal 2020年第11期133卷 1304-1311页

作者： peng-fei wu Wei-Wei Gao Cui-Lan Sun Tai Ma Ji-Qing Hao Department of Oncology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui 230022China

Background::Epidermal growth factor receptor(EGFR)tyrosine kinase inhibitors(TKIs),such as erlotinib and gefitinib,are widely used to treat non-small cell lung cancer(NSCLC).However,acquired resistance is unavoidable,impairing the anti-tumor effects of *** is reported that histone deacetylase(HDAC)inhibitors could enhance the anti-tumor effects of other antineoplastic agents and ***,whether the HDAC inhibitor suberoylanilide hydroxamic acid(SAHA)can overcome erlotinib-acquired resistance is not fully ***::An erlotinib-resistant PC-9/ER cell line was established through cell maintenance in a series of erlotinib-containing *** cells were co-cultured with SAHA,erlotinib,or their combination,and then the viability of cells was measured by the 3-(4,5-Dimethyl thiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay and apoptosis was determined by flow cytometry and western ***,the expression of phosphatase and tensin homolog deleted on chromosome 10(PTEN)was assessed by western ***::The half-maximal inhibitory concentration of parental PC-9 cells was significantly lower than the established erlotinib-acquired resistant PC-9/ER cell ***-9/ER cells demonstrated reduced expression of PTEN compared with PC-9 and H1975 cells,and the combination of SAHA and erlotinib significantly inhibited cell growth and increased apoptosis in both PC-9/ER and H1975 ***,treating PC-9/ER cells with SAHA or SAHA combined with erlotinib significantly upregulated the expression of PTEN mRNA and protein compared with erlotinib treatment ***::PTEN deletion is closely related to acquired resistance to EGFR-TKIs,and treatment with the combination of SAHA and erlotinib showed a greater inhibitory effect on NSCLC cells than single-drug *** enhances the suppressive effects of erlotinib in lung cancer cells,increasing cellular apoptosis and PTEN *** can be a potential adjuvant to erl

关键词： Acquired resistance Erlotinib Histone deacetylase Lung cancer SAHA