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| 1 | DYNAMIC BEHAVIORAL MODELING FOR STRONGLY NONLINEAR DOHERTY PAS USING REAL-VALUED TIME-DELAY RECURRENT RBF MODEL显示文摘This paper proposes a Real-Valued Time-Delay Recurrent Radial Basis Function (RVTDRRBF) model suitable for dynamic modeling of the strongly nonlinear behaviors of the Doherty Power Amplifiers (DPAs). This model has four Tapped Delay Lines (TDLs), which account for the memory effect of the DPA. The structure of the RVTDRRBF model is simpler than the traditional FeedForward Neural Networks (FFNNs) model. Weights and centers of the proposed model can be resolved by the Orthogonal Least Square (OLS) and Singular Value De-composition (SVD) algorithm. A three-carrier Wideband Code Division Multiple Access (WCDMA) signal is taken as the test signal. The simulation results in frequency-domain and time-domain for a DPA with 51 dBm output illustrate a good agreement between the RVTDRRBF model and measurement data. Moreover, comparing the Normalized Mean Square Error (NMSE) of RVTDRRBF model, memory polynomial model and RVTDRBF model, it can be noticed that the proposed RVTDRRBF model is more accurate than the RVTDRBF model and the memory polynomial model in modeling the strong dynamic nonlinearity of the DPAs. | Hui Ming Liu Taijun Ye Yan Zhang Haili Shen Dongya Li Liang | 2012 | Journal of Electronics(China)2012，29，1： | 4 |
| 2 | Formalin-induced astrocyte glutamate-glutamine cycle involved in rat spinal cord central sensitization显示文摘BACKGROUND:Central sensitization,a state of increased excitability of nociceptive neurons in the spinal dorsal horn following peripheral tissue injury and/or inflammation,is an important mechanism underlying hyperalgesia and neuropathic pain.Participation of the glutamate-glutamine cycle in central sensitization of the spinal cord remains poorly understood. OBJECTIVE:To determine whether the astrocyte-neuronal glutamate-glutamine cycle is involved in formalin-induced central sensitization in the spinal cord. DESIGN,TIME AND SETTING:A randomized,controlled,animal experiment was performed at the Institute of Orthopedics,Second Hospital,Lanzhou University,China from September 2007 to August 2008. MATERIALS:Methionine sulfoximine(MSO,0.1 mmol/L),glutamine(0.25 mmol/L),and formalin were used for this study. METHODS:A total of 43 male,Sprague Dawley rats,aged 4 months,were randomly assigned to a sham operation group(n = 6) and a model group(n = 37).Rats in the model group received intrathecal infusion in the spinal cord.7 days later,37 model rats were randomly divided into PBS, MSO,glutamine,MSO + glutamine and formalin subcutaneous injection alone groups.The PBS, MSO,glutamine,MSO + glutamine groups were respectively intrathecally injected with PBS,MSO, glutamine,MSO + glutamine(50μL each),and then infused with 10μL of saline.Rats from the sham operation group were not subjected to intrathecal infusion in the spinal cord.At 15 minutes after intrathecal injection,a rat model of formalin-induced inflammatory pain was established by subcutaneous injection of 5%formalin(50μL) in the left hindpaw. MAIN OUTCOME MEASURES:Changes in spontaneous nociceptive behavior(licking/biting or flinching) were observed following formalin injection into the rat hindpaw. RESULTS:Compared with the PBS group,duration of licking/biting was significantly shortened,and flinching frequency was significantly diminished in the MSO group(P<0.05).Compared with the MSO group,duration of licking/biting was significantly prolonged,and flinching frequency was significantly increased in the MSO + glutamine group(P<0.05).There was no significant difference in inflammatory pain behaviors among the sham operation,PBS,glutamine,MSO + glutamine,and formalin subcutaneous injection alone groups(P>0.05). CONCLUSION:The astrocyte-neuronal glutamate-glutamine cycle in the spinal cord was shown to be involved in central sensitization induced by formalin subcutaneous injection into the hindpaw. | Haili Shen Yufeng XieO Hua Han Yayi Xia Youcheng Zhang Cuifang Wang Jing Wang | 2009 | Neural Regeneration Research2009，4，11： | 2 |
| 3 | Effects of nano-TiO_2 dispersion on thermoelectric properties of Co_4Sb_(11.7)Te_(0.3) composites显示文摘Nano-TiO2/Co4Sb11.7Te0.3 composites were prepared by mechanical alloying (MA) and cold isostatic pressing (CIP) process.The phase composition,microstructure,and thermoelectric properties were characterized.The diffraction spectra of all samples well corresponds to CoSb3 skutterudite diffraction plane.TiO2 agglomerates into irregular clusters.They locate at the grain boundaries or some are distributed on the surface of Co4Sb11.7Te0.3 particles.For composites with high TiO2 content (0.6% and 1.0% TiO2),the phonon scattering by TiO2 particle,pores,and small size grains can result in a remarkable reduction in thermal conductivity.The maximum value of ZT is 0.79 for sample with 0.6 wt.% TiO2 at 700 K,which is 11% higher than that of non-dispersed sample. | Zhu, Yunguang Shen, Honglie Chen, Haili | 2012 | Rare Metals2012，31，1： | 2 |
| 4 | Immune responses of swine inoculated with a recombinant fowlpox virus co-expressing P12A and 3C of FMDV and swine IL-18显示文摘 | Mingxiao Ma Ningyi Jin Guoshun Shen Guangze Zhu Hui Juan Liu Min Zheng Huijun Lu Xiaowei Huo Minglan Jin Gefen Yin Haili Ma Xu Li Yue Ji Kuoshi Jin | 2007 | Veterinary Immunology and Immunopathology2007，，1： | 1 |
| 5 | An inactivated recombinant rabies virus chimerically expressed RBD induces humoral and cellular immunity against SARS-CoV-2 and RABV显示文摘Many studies suggest that severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)can infect various animals and transmit among animals,and even to humans,posing a threat to humans and animals.There is an urgent need to develop inexpensive and efficient animal vaccines to prevent and control coronavirus disease 2019(COVID-19)in animals.Rabies virus(RABV)is another important zoonotic pathogen that infects almost all warmblooded animals and poses a great public health threat.The present study constructed two recombinant chimeric viruses expressing the S1 and RBD proteins of the SARS-CoV-2 Wuhan01 strain based on a reverse genetic system of the RABV SRV9 strain and evaluated their immunogenicity in mice,cats and dogs.The results showed that both inactivated recombinant viruses induced durable neutralizing antibodies against SARS-CoV-2 and RABV and a strong cellular immune response in mice.Notably,inactivated SRV-nCoV-RBD induced earlier antibody production than SRV-nCoV-S1,which was maintained at high levels for longer periods.Inactivated SRV-nCoV-RBD induced neutralizing antibodies against both SARS-CoV-2 and RABV in cats and dogs,with a relatively broadspectrum cross-neutralization capability against the SARS-CoV-2 pseudoviruses including Alpha,Beta,Gamma,Delta,and Omicron,showing potential to be used as a safe bivalent vaccine candidate against COVID-19 and rabies in animals. | Haili Zhang Hongli Jin Feihu Yan Yumeng Song Jiaxin Dai Cuicui Jiao Yujie Bai Jingxuan Sun Di Liu Shen Wang Mengyao Zhang Jilong Lu Jingbo Huang Pei Huang Yuanyuan Li Xianzhu Xia Hualei Wang | 2023 | Virologica Sinica2023，38，2： | 0 |
| 6 | Shear resistance characteristics and influencing factors of root-soil composite on an alpine metal mine dump slope with different recovery periods显示文摘Artificial vegetation restoration is the main measure for vegetation restoration and soil and water conservation in alpine mine dumps on the Qinghai-Tibet Plateau,China.However,there are few reports on the dynamic changes and the influencing factors of the soil reinforcement effect of plant species after artificial vegetation restoration under different recovery periods.We selected dump areas of the Delni Copper Mine in Qinghai Province,China to study the relationship between the shear strength and the peak displacement of the root-soil composite on the slope during the recovery period,and the influence of the root traits and soil physical properties on the shear resistance characteristics of the root-soil composite via in situ direct shear tests.The results indicate that the shear strength and peak displacement of the rooted soil initially decreased and then increased with the increase of the recovery period.The shear strength of the rooted soil and the recovery period exhibited a quadratic function relationship.There is no significant function relationship between the peak displacement and the recovery period.Significant positive correlations(P<0.05)exists between the shear strength of the root-soil composite and the root biomass density,root volume density,and root area ratio,and they show significant linear correlations(P<0.05).There are no significant correlations(P>0.05)between the shear strength of the root-soil composite and the root length density,and the root volume ratio of the coarse roots to the fine roots.A significant negative linear correlation(P<0.05)exists between the peak displacement of the rooted soil and the coarse-grain content,but no significant correlations(P>0.05)with the root traits,other soil physical property indices(the moisture content and dry density of the soil),and slope gradient.The coarse-grain content is the main factor controlling the peak displacement of the rooted soil. | PANG Jinghao LIANG Shen LIU Yabin LI Shengwei WANG Shu ZHU Haili LI Guorong HU Xiasong | 2024 | Journal of Mountain Science2024，21，3： | 0 |
| 7 | Arctic sea ice volume export through the Fram Strait: variation and its effect factors显示文摘Arctic sea ice export is important for the redistribution of freshwater and sea ice mass.Here,we use the sea ice thickness,sea ice velocity,and sea ice concentration(SIC)to estimate the exported sea ice volume through the Fram Strait from 2011 to 2018.We further analyse the contributions of the sea ice thickness,velocity and concentration to sea ice volume export.Then,the relationships between atmospheric circulation indices(Arctic Oscillation(AO),North Atlantic Oscillation(NAO),and Arctic Dipole(AD))and the sea ice volume export are discussed.Finally,we analyse the impact of wind-driven oceanic circulation indices(Ekman transport(ET))on the sea ice volume export.The sea ice volume export rapidly increases in winter and decreases in spring.The exported sea ice volume in winter is likely to exceed that in spring in the future.Among sea ice thickness,velocity and SIC,the greatest contribution to sea ice export comes from the ice velocity.The exported sea ice volume through the zonal gate of the Fram Strait(which contributes 97%to the total sea ice volume export of the Fram Strait)is much higher than that through the meridional gate(3%)because the sea ice flowing out of the zonal gate has the characteristics of a high thickness(mainly thicker than 1 m),a high velocity(mainly faster than 0.06 m/s)and a high concentration(mainly higher than 80%).The AD and ET explain 53.86%and 38.37%of the variation in sea ice volume export,respectively. | Haili Li Changqing Ke Qinghui Zhu Xiaoyi Shen | 2023 | Acta Oceanologica Sinica2023，42，5： | 0 |
| 8 | Astroglial glutamate-glutamine cycle is involved in the modulation of inflammatory nociception in rats显示文摘Our previous behavioral studies have indicated that the astroglial glutamate-glutamine cycle is involved in the process of formalin-induced spinal cord central sensitization,but there was little morphological evidence.In this study,double-labeling immunofluorescence techniques showed that after rats were intrathecally injected with PBS and plantarly injected with formalin,glial fibrillary acidic protein(GFAP) and glutamine synthesase(GS) expression were increased and GFAP/GS coexpression was changed to include layers III and IV.After intrathecal injection of methionine sulfoximine,a GS specific inhibitor,the formalin-induced change in expression and coexpression of GFAP and GS in spinal cord dorsal horns was inhibited.The morphology,distribution and quantity of astrocytes recovered to normal levels.An intrathecal glutamine injection reversed the inhibitory effect of methionine sulfoximine.Astrocytes showed significant activation and distribution extended to layers V and VI.The present study provides morphological evidence that the astroglial glutamateglutamine cycle is involved in the process of formalin-induced spinal cord central sensitization. | Tiancheng Wang Jing Wang Bin Geng Hongyu Guo Haili Shen Yayi Xia | 2011 | Neural Regeneration Research2011，6，35： | 0 |
| 9 | NONLINEAR CHARACTERIZATION OF CONCURRENT DUAL-BAND RF POWER AMPLIFIERS显示文摘In this paper, the synchronous concurrent dual-band RF signal is used to drive the RF Power Amplifier (PA). The nonlinear characterization of a concurrent dual-band RF PA is discussed while two band signals in the dual-band are modulated by CDMA2000 and WCDMA signals. When the two band signals in the dual-band of the PA are modulated with the same signals, it is found that the nonlinearity of the PA can be expressed by any of the two corresponding baseband data. On the other hand, when the two band signals in the dual-band of the PA are modulated with two different signals, the PA nonlinearity cannot be characterized by any of the two corresponding baseband data. In this case, its nonlinearity has to be denoted by a composite signals consisting of the two baseband signals. Consequently, the requirements for the speed of the A/D converter can be largely reduced. The experimental results with CDMA2000 and WCDMA signals demonstrate the speed of the A/D converter required is only 30 M Sample Per Second (SaPS), but it will be at least 70 M SaPS for the conventional method. | Hui Ming Liu Taijun Ye Yan Zhang Haili Shen Dongya Li Liang | 2012 | Journal of Electronics(China)2012，29，3： | 0 |
| 10 | Thinner Sea Ice Contribution to the Remarkable Polynya Formation North of Greenland in August 2018显示文摘In August 2018,a remarkable polynya was observed off the north coast of Greenland,a perennial ice zone where thick sea ice cover persists.In order to investigate the formation process of this polynya,satellite observations,a coupled iceocean model,ocean profiling data,and atmosphere reanalysis data were applied.We found that the thinnest sea ice cover in August since 1978(mean value of 1.1 m,compared to the average value of 2.8 m during 1978-2017) and the modest southerly wind caused by a positive North Atlantic Oscillation(mean value of 0.82,compared to the climatological value of-0.02) were responsible for the formation and maintenance of this polynya.The opening mechanism of this polynya differs from the one formed in February 2018 in the same area caused by persistent anomalously high wind.Sea ice drift patterns have become more responsive to the atmospheric forcing due to thinning of sea ice cover in this region. | Xiaoyi SHEN Chang-Qing KE Bin CHENG Wentao XIA Mengmeng LI Xuening YU Haili LI | 2021 | Advances in Atmospheric Sciences2021，38，9： | 0 |
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