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Detrended cross-correlation analysis of electroencephalogram

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Chinese Physics B 2012年第2期21卷 577-580页

作者： Wang Jun zhao Da-qing Image Processing and Image Communications Key Laboratory School of Geography and Biological InformationNanjing University of Posts&TelecommunicationNanjing 210003China

In the paper we use detrended cross-correlation analysis （DCCA） to study the electroencephalograms of healthy young subjects and healthy old subjects. It is found that the cross-correlation between different leads of a healthy young subject is larger than that of a healthy old subject. It was shown that the cross-correlation relationship decreases with the aging process and the phenomenon can help to diagnose whether the subject＇s brain function is healthy or not.

关键词： detrended cross-correlation analysis electroencephalogram brain function aging process

Effect of feeding transgenic cry1Ab/cry1Ac rice on indices of immune function in broilers

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Journal of Integrative Agriculture 2016年第6期15卷 1355-1363页

作者： LIU Ran-ran zhao gui-ping ZHENG Mai-qing LIU Jie ZHANG Jing-jing LI Peng LI qing-he FENG Jing-hai ZHANG Min-hong WEN Jie Institute of Animal Sciences Chinese Academy of Agricultural Sciences Beijing 100193 P.R. China State Key Laboratory of Animal Nutrition Beijing 1O0193 P.R. China

The safety of feeding transgenic crylAb/crylAc rice （a genetically modified （GM） rice variety） to broilers was examined from an immunological perspective. HatchlingArborAcres chickens （240） were assigned to two dietary treatments （diets containing GM or non-GM rice） with 12 replicates per group and 10 birds per replicate. Traits were measured on one randomly selected bird from each replicate at d 21 and 42. The 42-d feeding trial revealed that crylAb/crylAc rice had no significant effect relative to non-GM rice on body weight and the immune organ indices. No significant pathological lesion in the spleen and bursa of Fabricius was found in the GM rice group. There were no significant differences in serum concentrations of immunoglobulin Y （IgY）, IgM, interleukin 4 （IL-4） and IL-6 between the two groups at d 21 or 42, except for IL-6 being higher （P〈0.05） in the GM- fed chickens at d 42. There were no differences in the T and B lymphocyte transformation rate and CD4＋/CD8＋ ratio between the two groups at d 42. Additionally, there was no significant difference between the two diets in expression of relevant genes viz. the major histocompatibility complex class II beta chain （BLB2）, interferon beta 1 （IFNβ）, tumour necrosis factor alpha-like （TNFa） and toll-like receptor 4 （TLR4）in the spleen and bursa of Fabricius. All the data demonstrated that transgenic crylAb/ crylAc rice had no adverse effect on these aspects of immune function of broilers during 42-d feeding trial. Transgenic rice was therefore indistinguishable from non-GM rice in terms of short-term feeding in chickens.

关键词： transgenic crylAb/crylAc gene rice broiler immune trait gene expression

Sun-Earth connection event of super geomagnetic storm on 2001 March 31:the importance of solar wind density

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Research in Astronomy and Astrophysics 2020年第3期20卷 122-128页

作者： Li-Bin Cheng gui-Ming Le Ming-Xian zhao School of Physics and Electronic Information Shangrao Normal UniversityShangrao 334001China National Center for Space Weather China Meteorological AdministrationBeijing 100081China

An X1.7 flare at 10:15 UT and a halo CME with a projected speed of 942 km s-1 erupted from NOAA solar active region 9393 located at N20 W19,which were observed on 2001 March *** the CME reached the Earth,it triggered a super geomagnetic storm(hereafter super storm).We find that the CME always moved towards the Earth according to the intensity-time profiles of protons with different *** solar wind parameters responsible for the main phase of the super storm occurred on 2001 March 31 are analyzed while taking into account the delayed geomagnetic effect of solar wind at the L1 point and using the SYM-H *** to the variation properties of SYM-H index during the main phase of the super storm,the main phase of the super storm is divided into two parts.A comparative study of solar wind parameters responsible for two parts shows the evidence that the solar wind density plays a significant role in transferring solar wind energy into the magnetosphere,besides the southward magnetic field and solar wind speed.

关键词： Sun coronal mass ejections(CMEs)-Sun solar-terrestrial relations--Sun solar wind

Systematics on production of superheavy nuclei Z=119-122 in fusion-evaporation reactions

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Nuclear Science and Techniques 2021年第10期32卷 59-71页

作者： Fei Niu Peng-Hui Chen zhao-qing Feng School of Physics and Optoelectronic Technology South China University of TechnologyGuangzhou 510640China College of Electrical Energy and Power Engineering Yangzhou UniversityYangzhou 225000China

The fusion dynamics of the formation of super-heavy nuclei were investigated thoroughly within the din-uclear system *** Monte Carlo approach was implemented in the nucleon transfer process to include all possible orientations,at which the dinuclear system is assumed to be formed at the touching configuration of dinuclear *** production cross sections of superheavy nuclei Cn,Fl,Lv,Ts,and Og were calculated and compared with the available data from *** evaporation residue excitation functions in the channels of pure neutrons and charged particles were systematically *** combinations of 44 Sc,48;50 Ti,49;51 V,52;54 Cr,58;62 Fe,and 62;64 Ni bombarding the actinide nuclides 238 U,244 Pu,248 Cm,247;249 Bk,249;251 Cf,252 Es,and 243 Am were calculated to produce the superheavy elements with Z¼119?*** obtained that the production cross sections sensitively depend on the neutron richness of the reaction *** structure of the evaporation residue excitation function is related to the neutron separation energy and fission barrier of the compound nucleus.

关键词： Dinuclear system model Fusion-evaporation reactions Superheavy nuclei Cross sections

Numerical Investigation of Base-Setting of Stator's Stagger Angles for a 15-stage Axial-Flow Compressor

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Journal of Thermal Science 2014年第1期23卷 36-44页

作者： CHANG Hao zhao Weiguang JIN Donghai PENG Zeyan gui Xingmin Aero-Engine Simulation Research Center School of Energy and Power EngineeringBeihang University 37

A 15-stage axial-flow compressor utilized in steel industry was studied in this paper. All the stator's stagger angles of the compressor are variable to ensure the multistage compressor operate effectively within a wide range of flow rate and meanwhile satisfy the demand for sufficient pressure ratio, adiabatic efficiency and stall margin. Three in all different base-settings of stator's stagger angles were presented and commercial CFD software was applied to obtain the overall performance characteristics. The results showed that both of the optimized base-settings improved the performances both in summer and winter conditions, although the adiabatic efficiency was somewhat decreased. Taking incidence angle and stage loading into consideration, differences among the three cases were analyzed in detail. On the basis of numerical computations, the performance could be effectively improved through adjusting the base-setting of stator's stagger angles.

关键词： multistage compressor stagger angle incidence angle variable stator

锈蚀Q345C钢材疲劳性能试验研究及数值模拟

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Nucleotide oligomerization domain 2 contributes to the innate immune response in THCE cells stimulated by Aspergillus fumigatus conidia

工程力学 2025年第1期42卷 53-63页

作者：彭建新赵洋王贤基刘意彭彦庆长沙理工大学桥梁工程安全控制教育部重点实验室长沙410114 长沙理工大学土木工程学院长沙410114 广东省高速公路发展股份有限公司佛开分公司广州510000

为了研究桥梁常用Q345C结构钢锈蚀损伤后的疲劳性能，开展了Q345C钢材电化学加速锈蚀试验和拉伸疲劳试验，得到了不同锈蚀损伤程度下Q345C钢材的蚀坑深度分布特征和疲劳寿命，给出了50%和97.7%存活率下的S-N曲线，并对不同锈蚀率试件的... 详细信息

为了研究桥梁常用Q345C结构钢锈蚀损伤后的疲劳性能，开展了Q345C钢材电化学加速锈蚀试验和拉伸疲劳试验，得到了不同锈蚀损伤程度下Q345C钢材的蚀坑深度分布特征和疲劳寿命，给出了50%和97.7%存活率下的S-N曲线，并对不同锈蚀率试件的疲劳断口特征进行了对比分析，通过3D扫描逆向建模并结合ABAQUS/FE-SAFE进行疲劳寿命仿真分析。结果表明：随着锈蚀率的增大，锈蚀区域由点蚀为主向均匀锈蚀为主转变;锈蚀对疲劳性能降低与应力水平有关，低应力水平下锈蚀对疲劳性能的降低尤为显著;未锈蚀试件97.7%存活率的S-N曲线与BS 7608规范接近且略大于钢结构设计规范GB 50017−2003，而锈蚀损伤试件97.7%存活率S-N曲线均低于常用疲劳规范曲线，且200万次等效疲劳强度明显降低;锈蚀试件断口存在明显的疲劳台阶且断裂后塑性变形小，试件的断口裂纹扩展面积比与应力水平和锈蚀率均呈反比;锈蚀试件疲劳寿命仿真结果与试验相比误差最大仅为6.32%。

关键词：桥梁工程疲劳性能锈蚀 Q345C钢数值模拟

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International Journal of Ophthalmology(English edition) 2012年第4期5卷 409-414页

作者： Zheng-Jie Xu gui-Qiu zhao qing Wang Cheng-Ye Che Nan Jiang Li-Ting Hu and Qiang Xu Department of Ophthalmology the Affiliated Hospital of Qingdao University Medical College Qingdao 266003 Shandong Province China

AIM: To investigate the expression of nucleotide oligomerization domain 2 (NOD2) in the immortalized human corneal epithelial cell line (THCE), and its role in the innate immune response triggered by inactive Aspergillus fumigatus (Af) conidia. METHODS: The normal THCE cells were investigated as controls. After incubation with inactive Af conidia for 0.5, 2, 4, 6, and 8 hours, THCE cells were harvested, mRNA expression of NOD2 and receptor interacting protein 2 (RIP2) was detected by RT-PCR. Intracellular proteins including NOD2, NF-kappa B and proinflammatory cytokines such as TNF-alpha, IL-8, IL-6 in the cell supernatant were analyzed by ELISA. RESULTS: Our data indicate that NOD2 expressed in the normal THCE cells. After triggered by the inactive Af conidia, the expression of NOD2, RIP2 mRNA and the secretion of NOD2, NF-kappa B, TNF-alpha, IL-8, IL-6 both increased in a time-depended manner, and reached the peak point at 4, 6, 6, 4, 6, 6, 4 hours, respectively. And after pretreated with NOD2 neutralizing antibody, the expression of RIP2, NF-kappa B, TNF-alpha, IL-8 both decreased dramatically at the peak point, while the secretion of IL-6 changed little. CONCLUSION: The results of this study suggest that NOD2 exists and expresses in the THCE cells, and contributes to the innate immune responses triggered by inactive Afconidia by induction of proinflammatory cytokines such as TNF-alpha and IL-8 through the NF-kappa B pathway.

关键词： nucleotide oligomerization domain 2 corneal epithelial cell Aspergillus fumigatus innate immune response

Liquid phase in-situ synthesis of LiF coated boron powder composite and performance study

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Defence Technology（防务技术） 2020年第3期16卷 635-641页

作者： Yang Xu qing-zhong Cui Cheng-wen zhao State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China Shanxi Jiangyang Chemical Factory Shanxi 030000China

Among practical metal additives,boron(B) has a high volumetric heating value,making it a promising choice as a fuel *** B can theoretically yield a large amount of energy upon complete combustion,its combustion is retarded by the initial presence of B oxide,which coats the surfaces of B *** improve the ignition and combustion properties of B powder,LiOH and NH4F were used as precursors to synthesize uniformly LiF-coated B composites(LiF-B) in *** LiF-B mixture was also prepared for comparison using a physical method.X-ray diffraction(XRD),Fourier-transform infrared(FTIR),scanning electron microscope(SEM),and energy-dispersive X-ray spectroscopy(EDS) were used to characterize the morphologies and compositions of the *** thermal and combustion properties of the samples were characterized by thermal gravity-differential thermal gravity(TG-DTG),differential scanning calo rimetry(DSC) and closed bomb *** XRD,FTIR,SEM and EDS results demonstrated the successful preparation of the coated LiF-B *** TG-DTG and closed bomb experiment results indicated that the addition of LiF decreased the ignition temperature of B powder,and increasing its reaction *** results show that when LiF-B was added,the released heat of underwater explosive increased by 6727.2,7280.4 and 3109.6 J/g at heating rates of 5,10,and 15℃/min,***,LiF-B decreased the activation energy of secondary combustion reaction of explosive system as calculated through Kissinger’s method by 28.9%,which indicated an excellent catalytic effect for the thermal decomposition of underwater *** results reveal that LiF can improve the combustion efficiency of B powder,thereby increasing the total energy of *** mechanical sensitivity increased slightly after adding LiF-B to the underwater *** mpared to the underwater explosive with added B,the mechanical sensitivity of the explosive with added LiF-B was significantly

关键词： Boron LiF Coating Thermal decomposition properties Energy efficiency

GENISTEIN INHIBITS PROLIFERATION OF HUMAN ENDOMETRIAL ENDOTHELIAL CELL IN VITRO

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Chinese Medical Sciences Journal 2008年第1期23卷 49-53页

作者： gui-hua Sha Shou-qing Lin Gynecological Endocrinology Laboratory Peking Union Medical College HospitalDepartment of Obstetrics and GynecologyChinese Academy of Medical Sciences＆Peking Union Medical College Beijing 100730

Objective To explore the effect of genistein on proliferation of human endometrial endothelial cells （HEECs） and glandular epithelium. Methods In vitro HEECs and human endometrial cancer-1B cell （HEC-1B ） were cultured with 0, 1, 10, 50, 100, and 200 μmol/L of genistein alone or indicated concentrations of genistein combined with 0.2 or 1 nmol/L 17β- estradiol （ 17β-E2）. Cell proliferation was determined by [ 3H ] -thymidine incorporation and cell cycle was measured by flow cytometry. Results After 96 hours of treatment, genistein inhibited the proliferation of HEECs in a dose-dependent manner. The stimulation index reduced from 100% （ without genistein treatment ） to about 1% （ 200 μmol/L genistein ）. HEECs were arrested at G1/0 and G2/M phase when treated with genistein for 96 hours. When the concentration of genistein was 200 μmol/L, the percentages of HEECs at G1/0, G2/M, and S phase were 96. 0%, 2.1%, and 1.9%, respectively. However, when HEECs were treated without genistein, the percentages of HEECs at G1/0, G2/M, and S phase were 76. 7%, 8.5%, and 14. 7%, respectively. 1713-E2 could not influence the effects of genistein on the proliferation of HEECs. Meanwhile, genistein could suppress the proliferation of HEC-1B. If the stimulation index of HEC-IB was defined as 100% when HEC-1B was treated with different doses of 1713-E2 （without genistein）, it was 67%, 19%, as well as 32% when cell was supplemented with 200 μmol/L genistein combined with 0, 0. 2, or 1 nmol/L 17β-E2, respectively. Conclusion Genistein at the concentration of 200 μmol/L can sufficiently inhibit the proliferation of HEECs and endometrial glandular epithelium simultaneously in vitro.

关键词： genistein angiogenesis human endometrial endothelial cell human endometrial cancer-1B cell proliferation