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| 1 | 1995~1997年中国部分地区麻疹病毒流行株基因型分析显示文摘本文报道以反转录二步多聚酶链反应方法 (RT -PCR)直接测定麻疹病人唾液、尿液标本中的麻疹病毒 (MV)血凝基因 (H)、核衣壳基因 (N)。以RT -PCR产物纯化后进行MV 4 50ntH、2 82ntN基因核苷酸片段测序分析 ,测序结果一致表明 ,1995~ 1997年期间中国部分地区MV流行株存在两种基因型。其中一种基因型只发现 1株 ,与EDw54株相同 ,另一种基因型占流行株的绝大多数 (称新基因型 ) ,与其它国家以前报道的MV流行株基因型的N基因最大差异为 15.4 %与EDw54、疫苗株相差8.8% ;H基因最大差异是 10 .8%。 | 孙英杰 LiJin 葛力 | 1998 | 中华流行病学杂志1998,19,6: | 19 |
| 2 | Intercropping with Solanum nigrum and Solanum photeinocarpum from Two Ecoclimatic Regions Promotes Growth and Reduces Cadmium Uptake of Eggplant Seedlings显示文摘Soil contamination by heavy metals is a serious environmental problem worldwide, and reduction of heavy metal accumulation in vegetables grown on contaminated land is a matter of urgency. A pot experiment was conducted to study the effects of intercropping with the Cd hyperaccumulators Solanum nigrum and Solanum photeinocarpum from two ecoclimatic regions, Ya'an and Chengdu,Sichuan Province, China, on the growth and cadmium(Cd) uptake of eggplant(Solanum melongena L.). The biomass, photosynthetic pigment contents, and activities of antioxidant enzymes of eggplant were enhanced by intercropping. The biomass of eggplant was the highest after intercropping with S. photeinocarpum from Ya'an, but did not differ significantly from that after intercropping with S. nigrum from Chengdu. The shoot Cd content of eggplant was significantly reduced by intercropping with the hyperaccumulators,which ranked as follows: S. nigrum from Chengdu > S. nigrum from Ya'an > S. photeinocarpum from Chengdu > S. photeinocarpum from Ya'an, with the decreases being 19.60%, 14.36%, 9.66%, and 6.42%, respectively, as compared with the control. The lowest shoot Cd content and translocation factor of eggplant were attained after intercropping with S. nigrum from Chengdu. Therefore, it was feasible to intercrop eggplant with S. nigrum and S. photeinocarpum on Cd-contaminated soil. | TANG Yi HE Juan YU Xuena XIE Yongdong LIN Lijin SUN Guochao LI Huanxiu LIAO Mingan LIANG Dong XIA Hui WANG Xun ZHANG Jing LIU Zejing TU Lihua LIU Li | 2017 | Pedosphere2017,27,3: | 17 |
| 3 | Cuckoo search with varied scaling factor显示文摘 | Lijin WANG Yilong YIN Yiwen ZHONG | 2015 | Frontiers of Computer Science2015,9,4: | 15 |
| 4 | Synthetical Efficiency-based Optimization for the Power Distribution of Power-split Hybrid Electric Vehicles显示文摘Now the optimization strategies for power distribution are researched widely,and most of them are aiming to the optimal fuel economy and the driving cycle must be preknown.Thus if the actual driving condition deviates from the scheduled driving cycle,the effect of optimal results will be declined greatly.Therefore,the instantaneous optimization strategy carried out on-line is studied in this paper.The power split path and the transmission efficiency are analyzed based on a special power-split scheme and the efficiency models of the power transmitting components are established.The synthetical efficiency optimization model is established for enhancing the transmission efficiency and the fuel economy.The identification of the synthetical efficiency as the optimization objective and the constrain group are discussed emphatically.The optimization is calculated by the adaptive simulated annealing(ASA)algorithm and realized on-line by the radial basis function(RBF)-based similar models.The optimization for power distribution of the hybrid vehicle in an actual driving condition is carried out and the road test results are presented.The test results indicate that the synthetical efficiency optimization method can enhance the transmission efficiency and the fuel economy of the power-split hybrid electric vehicle(HEV)observably.Compared to the rules-based strategy the optimization strategy is optimal and achieves the approximate global optimization solution for the power distribution.The synthetical efficiency optimization solved by ASA algorithm can give attentions to both optimization quality and calculation efficiency,thus it has good application foreground for the power distribution of power-split HEV. | WANG Weida HAN Lijin XIANG Changle MA Yue LIU Hui | 2014 | Chinese Journal of Mechanical Engineering2014,27,1: | 12 |
| 5 | Accumulation and potential sources of heavy metals in soils of the Hetao area,Inner Mongolia,China显示文摘Soil contamination by heavy metals is a problem in agricultural irrigation systems.To assess the accumulation and sources of heavy metals in the Yongji irrigation district of the Hetao area,Inner Mongolia,China,195 soil samples from 39 sites(0–100 cm)were collected,and Zn,Cu,Pb,Cr,and Cd concentrations were analyzed.The mean concentrations were 107.17,32.48,12.31,53.53,and 0.22 mg kg-1,respectively,with no significant differences between soil depths(P>0.05).Concentrations of Zn,Cu,and Cd were higher than the background levels,with moderate accumulation;the contamination factor(CF)values were 1.9,1.7,and 1.9,respectively,and the geoaccumulation index(Igeo)was>0.Concentrations of Pb and Cr were lower than,or close to,the background levels(CF<1,Igeo<0),indicating that they originated from a natural source.The monomial potential ecological risk index(Eri)for Zn,Cu,Pb,and Cr was low;Eri for Cd was 55.73,implying a moderate risk.The grade of potential ecological risk index of the five heavy metals(RI)was low,declining from south to north.The studied soils were contaminated with Zn,Cu,and Cd;principal component(PC)analysis implicated the enrichment of Cd and partial Cu(high loading in PC 2)was related to agricultural activities;Zn and partial Cu,closely associated with PC 3,may have originated from irrigation water from the Yellow River.Future agricultural development should focus on fertilizer and pesticide application and the quality of irrigation water. | Yangchun ZHU Lijin WANG Xueyong ZHAO Jie LIAN Zhenhua ZHANG | 2020 | Pedosphere2020,30,2: | 12 |
| 6 | The base-scale entropy analysis of short-term heart rate variability signal显示文摘The complexity of heart rate variability (HRV) signal can reflect physiological functions and healthy status of heart system. Detecting complexity of the short-term HRV signal has an important practical meaning. We introduce the base-scale entropy method to analyze the complexity of time series. The advantages of our method are its simplicity, ex-tremely fast calculation for very short data and anti-noise characteristic. For the well-known chaotic dynamical sys-tem―logistic map, it is shown that our complexity be-haves similarly to Lyapunov exponents, and is especially effective in the presence of random Gaussian noise. This paper addresses the use of base-scale entropy method to 3 low-dimensional nonlinear deterministic systems. At last, we apply this idea to short-term HRV signal, and the result shows the method could robustly identify patterns generated from healthy and pathologic states, as well as aging. The base-scale entropy can provide convenience in practically applications. | LIJin NINGXinbao | 2005 | Chinese Science Bulletin2005,50,12: | 10 |
| 7 | The motion analysis of fire video images based on moment features and flicker frequency显示文摘In this paper, motion analysis methods based on the moment features and flicker frequency features for early fire flame from ordinary CCD video camera were proposed, and in order to describe the changing of flame and disturbance of non-flame phenomena further more, the average changing pixel number of the first-order moments of consecutive flames has been defined in the moment analysis as well. The first-order moments of all kinds of flames used in our experiments present irregularly flickering, and their average changing pixel numbers of first-order moments are greater than fire-like disturbances. For the analysis of flicker frequency of flame, which is extracted and calculated in spatial domain, and therefore it is computational simple and fast. The method of extracting flicker frequency from video images is not affected by the catalogues of combustion material and distance. In experiments, we adopted two kinds of flames, i. e. , fixed flame and movable flame. Many comparing and disturbing experiments were done and verified that the methods can be used as criteria for early fire detection. | LIJin FONG N.K.,CHOW W.K.,WONG L.T.,LUPuyi XUDian-guo | 2004 | Journal of Marine Science and Application2004,3,1: | 9 |
| 8 | Amino-functionalized magnetic bacterial cellulose/activated carbon composite for Pb^2+ and methyl orange sorption from aqueous solution显示文摘A new nanostructured amino-functionalized magnetic bacterial cellulose/activated carbon(BC/AC)composite bioadsorbent(AMBCAC)was prepared for removal of Pb^(2+)and methyl orange(MO)from aqueous solution.The results demonstrated that the equilibrium adsorption capacity(q_e)for Pb^(2+)obviously increases by 2.14 times after introduction of amino groups,the optimum p H for Pb^(2+)and MO adsorption was 5.0 and 3.0,respectively,and the q_eof AMBCAC was 161.78 mg g^(-1)for Pb^(2+)and 83.26 mg g^(-1)for MO under the optimal conditions in this investigation.The kinetics and adsorption isotherm data of the sorption process were well fitted by pseudo-second-order kinetic model and Langmuir isotherm respectively.The thermodynamic results(the Gibbs free energy change G<0,the enthalpy change H>0,the entropy change S>0)implied that the adsorption process of Pb^(2+)and MO was feasible,endothermic and spontaneous in nature.These results support that the AMBCAC composite developed in this work can provide a cheap and efficient way for easy removal of both Pb^(2+)and MO as a promising adsorbent candidate for wastewater treatment. | Xiaogui Huang Xiaozhang Zhan Cuilian Wen Feng Xu Lijin Luo | 2018 | Journal of Materials Science & Technology2018,34,5: | 7 |
| 9 | Microstructure and intergranular stress corrosion cracking susceptibility of a SA508-52M-316L dissimilar metal weld joint in primary water显示文摘Correlation of microstructure and intergranular stress corrosion cracking(IGSCC) susceptibility for the SA508-52 M-316 L dissimilar metal weld joint in primary water was investigated by the interrupted slow strain rate tension test following a microstructure characterization.The susceptibility to IGSCC in various regions of the dissimilar metal weld joint was observed to follow the order of Alloy 52 Mb> the heat affected zone of 316 L> the dilution zone of Alloy 52 Mw> Alloy 52 Mw weld metal.The chromiumdepletion at the grain boundary is the dominant factor causing the high IGSCC susceptibility of Alloy52 Mb.However,IGSCC initiation in the heat affected zone of 316 L is attributed to the increase of residual strain adjacent to the grain boundary.In addition,the decrease of chromium content and increase of residual strain adjacent to the grain boundary increase the IGSCC susceptibility of the dilution zone of Alloy 52 Mw. | Lijin Dong Qunjia Peng En-Hou Han Wei Ke Lei Wang | 2018 | Journal of Materials Science & Technology2018,34,8: | 6 |
| 10 | Effect of nano-oxide layers on the magnetoresistance of ultrathin permalloy films显示文摘Ta/NiFe/Ta ultrathin films with and without nano-oxide layers (NOLs) were prepared by magnetron sputtering followed by a vacuum annealing process. The influence of NOLs on the magnetoresistance (MR) ratio of ultrathin permalloy films was studied. The results show that the influence of grain size and textures on the MR ratio becomes weak when the thickness of the NiFe layer is below 15 nm. A higher MR ratio was observed for the thinner (<15 nm) NiFe film with NOLs. The MR ratio of a 10 nm NiFe film can be remarkably enhanced by NOLs. The enhanced MR ratio for these ultrathin films can be attributed to the enhanced specular reflection of conduction electrons. | WANG Le ZHANG Jinzhong WANG Lijin | 2009 | Rare Metals2009,28,6: | 6 |
| 11 | Design, synthesis and nonlinear optical properties of “dendronized hyperbranched polymers”显示文摘A new type of dendritic polymer, named dendronized hyperbranched polymer (DHP), was prepared successfully by the macro-monomer approach. Thanks to the perfect 3D isolation effects, DHPG1 exhibited good NLO property with d 33 value of 133 pm/V, higher than its analogues of dendronized polymer and dendrimer, and its stability of NLO effect was also enhanced. | WU WenBo HUANG LiJin FU YingJie YE Cheng QIN JinGui LI Zhen | 2013 | Chinese Science Bulletin2013,58,22: | 5 |
| 12 | A TCP Performance Enhancement Scheme in Infrastructure based Vehicular Networks显示文摘Transmission Control Protocol(TCP) in infrastructure based vehicular networks is dedicated to support reliable Internet services for mobile users.However,an end-toend TCP flow not only experiences some common challenges in wireless mobile networks,such as high packet loss rate,medium access competition,unstable wireless bandwidth,and dynamic topology,etc.,but also suffers from performance degradation due to traffic congestion at the Road-Side Units(RSUs) that connect the wireline and wireless networks.In order to address the challenging issues related to reliable TCP transmissions in infrastructure based vehicular networks,we propose an RSU based TCP(R-TCP) scheme.For wireline source nodes,R-TCP adopts a novel flow control mechanism to adjust transmission rates according to the status of bottleneck link.Specifically,during the short wireless connection time in Infrastructure based vehicular networks,R-TCP quickly chooses an ideal transmission rate for data transmissions instead of activating the slow start algorithm after the connection is established,and successfully avoids the oscillation of the transmission rate.Simulation results show that R-TCP achieves great advantages than some relate proposals in terms of throughput,end-to-end delay,and packet loss rate. | HA Le FANG Lijin BI Yuanguo LIU Wei | 2015 | China Communications2015,12,6: | 5 |
| 13 | Magnetic property and recording performance of chemical deposition CoP thin films显示文摘The thickness of CoP thin films prepared by wet chemical deposition is of crucial importance on magnetic property and recording perform-ance. The coercivity of CoP films decreased with increasing film thickness. The coercivity was 45.37 kA m 1 at the thickness of 300 nm, and decreased to 21.65 kA m 1 at 5.7 μm. Recording performance tests indicate that, for drums with the same size, different recorded magnetic pole density have different thickness requirements. For 40 mm diameter magnetic drum, the optimal CoP thickness is 3~10 μm for 256 re-corded magnetic poles, 1~2 μm for 512 recorded magnetic poles, and 500~800 nm for 1024 recorded magnetic poles. | Wang, Haicheng Zhou, Qunfei Teng, Jiao Wang, Lijin Yu, Guanghua | 2012 | Rare Metals2012,31,3: | 3 |
| 14 | Tranexamic acid for acute intracerebral haemorrhage growth based on imaging assessment (TRAIGE): a multicentre, randomised, placebo- controlled trial显示文摘Background Studies show tranexamic acid can reduce the risk of death and early neurological deterioration after intracranial haemorrhage.We aimed to assess whether tranexamic acid reduces haematoma expansion and improves outcome in intracerebral haemorrhage patients susceptible to haemorrhage expansion.Methods We did a prospective,double-blind,randomised,placebo-controlled trial at 10 stroke centres in China.Acute supratentorial intracerebral haemorrhage patients were eligible if they had indication of haemorrhage expansion on admission imaging(eg,spot sign,black hole sign or blend sign),and were treatable within 8 hours of symptom onset.Patients were randomly assigned(1:1)to receive either tranexamic acid or a matching placebo.The primary outcome was intracerebral haematoma growth(>33% relative or>6 mL absolute)at 24 hours.Clinical outcomes were assessed at 90 days.Results Of the 171 included patients,124(72.5%)were male,and the mean age was 55.9±11.6 years.89 patients received tranexamic acid and 82 received placebo.The primary outcome did not differ significantly between the groups:36(40.4%)patients in the tranexamic acid group and 34(41.5%)patients in the placebo group had intracranial haemorrhage growth(OR 0.96,95% CI 0.52 to 1.77,p=0.89).The proportion of death was lower in the tranexamic acid treatment group than placebo group(8.1%vs 10.0%),but there were no significant differences in secondary outcomes including absolute intracranial haemorrhage growth,death and dependency.Conclusions Among patients susceptible to haemorrhage expansion treated within 8 hours of stroke onset,tranexamic acid did not significantly prevent intracerebral haemorrhage growth.Larger studies are needed to assess safety and efficacy of tranexamic acid in intracerebral haemorrhage patients. | Jingyi Liu Ximing Nie Hongqiu Gu Qi Zhou Haixin Sun Ying Tan Dacheng Liu Lina Zheng Jiahui Zhao Yan Wang Yibin Cao Haomeng Zhu Yunpeng Zhang Lijin Yi Yuehua Pu Miao Wen Zhonghua Yang Shengjun Sun Wenzhi Wang Xingquan Zhao Liping Liu Yongjun Wang | 2021 | Stroke & Vascular Neurology2021,6,2: | 3 |
| 15 | 4D printing of personalized shape memory polymer vascular stents with negative Poisson’s ratio structure:A preliminary study显示文摘Four-dimensional(4D)printing,integrates transformation information into three-dimensional(3D)-printed structures,which means that 3D-printed structures are able to change their shapes,properties,or functionalities over time.Here,two types of shape memory personalized vascular stents with negative Poisson’s ratio structure are developed via 4D printing.The genetic algorithm is used to optimize the structure.Axial compression tests,radial compression tests and three-point bending tests are carried out to study the mechanical properties of the stents.In addition,fluid-structure interaction and stress distribution during the shape recovery process are investigated based on finite element method.The shape memory behaviors of the stents are excellent and in vitro feasibility tests demonstrate that the stents can expand the simulated narrow blood vessel rapidly.Therefore,4D printed shape memory stents with negative Poisson’s ratio structure are highly promising for the treatment of vascular stenosis. | LIN Cheng ZHANG LiJin LIU YanJu LIU LiWu LENG JinSong | 2020 | Science China(Technological Sciences)2020,63,4: | 3 |
| 16 | Stochastic Multi-Symplectic Integrator for Stochastic Nonlinear Schrodinger Equation显示文摘In this paper we propose stochastic multi-symplectic conservation law for stochastic Hamiltonian partial differential equations,and develop a stochastic multisymplectic method for numerically solving a kind of stochastic nonlinear Schrodinger equations.It is shown that the stochasticmulti-symplecticmethod preserves themultisymplectic structure,the discrete charge conservation law,and deduces the recurrence relation of the discrete energy.Numerical experiments are performed to verify the good behaviors of the stochastic multi-symplectic method in cases of both solitary wave and collision. | Shanshan Jiang Lijin Wang Jialin Hong | 2013 | Communications in Computational Physics2013,14,7: | 3 |
| 17 | Development and validation of a rapid and sensitive UHPLCeMS/MS method for the determination of paliperidone in beagle dog plasma显示文摘In order to evaluate the pharmacokinetic profile of paliperidone extended-release tablets in vivo,a simple and rapid ultra-high performance liquid chromatographyetandem mass spectrometry(UHPLCeMS/MS)method was developed and validated for the determination of paliperidone in beagle dog plasma.Paliperidone and diazepam(internal standard)were extracted from plasma samples with diethyl ether,and then separated on a C_(18) column(2.1×50 mm,2.6 mm)under gradient elution with methanol-0.1%formic acid at a flow rate of 0.3 ml/min.The compounds were detected using a triple-quadrupole mass spectrometer equipped with an electrospray ionization(ESI)source.The validated method was linear over the concentration range of 1.00-1000.00 ng/ml and the lower limit of quantitation was 1.00 ng/ml.The intra-day and inter-day precision values were not more than 15%(relative standard deviation<20%at low levels),while the accuracy was within±10%of nominal values.The validated UHPLC-MS/MS method was successfully applied to an oral pharmacokinetic study of paliperidone extended-release tablets in a beagle dog. | Hongming Chen Longshan Zhao Guangjing Li Donglei Leng Panqin Ma Lijin Tong Tianhong Zhang | 2014 | Asian Journal of Pharmaceutical Sciences2014,9,5: | 3 |
| 18 | Development and verification of large deformation model considering stiffness deterioration and shear dilation effect in FLAC^(3D)显示文摘The existing constitutive models of rock with strain softening cannot successfully reflect the damageinduced anisotropy and nonlinearity of the post-peak failure behavior under progressive loading. In order to better reflect the nonlinear stress-strain behavior of rock, especially for the post-peak failure behavior,with expected stiffness degradation and large deformation, a modified constitutive model of rock considering stiffness degradation and dilatation behavior at large deformation was proposed in this study. This study analyzes and discusses various attenuation parameters in the proposed nonlinear plastic constitutive model using FLAC^(3D) software. The excavation-induced stress in rocks was calculated by FLAC^(3D) using the Mohr-Coulomb model, conventional strain model, and the proposed modified model. The obtained results of these models were analyzed and compared with field data. This study shows that the simulated results using the proposed new constitutive model matched much more closely with the measured field data, with an average error less than 5%. This new model can successfully reflect the damage-induced stiffness degradation at large deformation, and can provide a theoretical basis for stability design and evaluation of underground excavation. | Wang Ruijie Li Chong Xu Jinhai Pan Lijin | 2018 | International Journal of Mining Science and Technology2018,28,6: | 2 |
| 19 | Photophysics,photochemistry and photobiology of hypocrel-lin photosensitizers显示文摘Hypocrellins are novel photosensitizers from China, which are demonstrated to have significant anti-tumor and anti-virus activity and to be potential photo-dynamic therapy (PDT) agents. As compared with hemato-porphyrin, the only approved photosensitizer, hypocrellins have several advantages, such as easy preparation and easy purification, high triplet quantum yield, high singlet-oxygen quantum yield, high phototoxicity but low dark toxicity, and rapid clearance from normal issues. This article reviews briefly the photophysics, photochemistry and photobiology of hypocrellins on the basis of the domestic and international research results. | Lijin Jiang Yuying He | 2001 | Chinese Science Bulletin2001,46,1: | 2 |
| 20 | Photochemistry of hypocrellin derivatives under anaerobic conditions显示文摘To improve the red absorption and solubility of hypocrellin, we have synthesized a series of hypocrellin B derivatives. The pnotochemistry of these new compounds in anaerobic media has been investigated by using electronic paramagnetic resonance (EPR) and spectrophotometric methods. The semiquinone anion radicals can be produced by self-electron transfer on irradiation, with the formation efficiency and EPR hyperfine structures of the semiquinone anion radicals dependent on the structures of the derivatives. When an electron donor is present, the electron transfer from electron donor to hypocrellin B derivatives enhanced the production of the corresponding semiquinone anion radical; in addition, the semiquinone anion radical and hydroquinone can be detected spectrophotometrically. Structural modifications exert little effect on the absorption position of semiquinone anion radical and hydroquinone, but influence their formation efficiency significantly. | Yuying He An Jingyi Lijin Jiang | 2000 | Chinese Science Bulletin2000,45,7: | 2 |