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| 1 | A fundamental theorem for eco-environmental surface modelling and its applications显示文摘We propose a fundamental theorem for eco-environmental surface modelling(FTEEM) in order to apply it into the fields of ecology and environmental science more easily after the fundamental theorem for Earth’s surface system modeling(FTESM). The Beijing-Tianjin-Hebei(BTH) region is taken as a case area to conduct empirical studies of algorithms for spatial upscaling, spatial downscaling, spatial interpolation, data fusion and model-data assimilation, which are based on high accuracy surface modelling(HASM), corresponding with corollaries of FTEEM. The case studies demonstrate how eco-environmental surface modelling is substantially improved when both extrinsic and intrinsic information are used along with an appropriate method of HASM. Compared with classic algorithms, the HASM-based algorithm for spatial upscaling reduced the root-meansquare error of the BTH elevation surface by 9 m. The HASM-based algorithm for spatial downscaling reduced the relative error of future scenarios of annual mean temperature by 16%. The HASM-based algorithm for spatial interpolation reduced the relative error of change trend of annual mean precipitation by 0.2%. The HASM-based algorithm for data fusion reduced the relative error of change trend of annual mean temperature by 70%. The HASM-based algorithm for model-data assimilation reduced the relative error of carbon stocks by 40%. We propose five theoretical challenges and three application problems of HASM that need to be addressed to improve FTEEM. | Tianxiang YUE Na ZHAO Yu LIU Yifu WANG Bin ZHANG Zhengping DU Zemeng FAN Wenjiao SHI Chuanfa CHEN Mingwei ZHAO Dunjiang SONG Shihai WANG Yinjun SONG Changqing YAN Qiquan LI Xiaofang SUN Lili ZHANG Yongzhong TIAN Wei WANG Ying’an WANG Shengnan MA Hongsheng HUANG Yimin LU Qing WANG Chenliang WANG Yuzhu WANG Ming LU Wei ZHOU Yi LIU Xiaozhe YIN Zong WANG Zhengyi BAO Miaomiao ZHAO Yapeng ZHAO Yimeng JIAO Ufra NASEER Bin FAN Saibo LI Yang YANG John PWILSON | 2020 | Science China Earth Sciences2020，63，8： | 7 |
| 2 | Phase transformation,thermodynamics and kinetics property of Mg90Ce5RE5(RE=La,Ce,Nd)hydrogen storage alloys显示文摘The Mg90Ce5 RE5(RE=La,Ce,Nd)alloys were prepared by a vacuum induction furnace and their micro structure,phase transformation,thermodynamics and kinetics property were systematically studied by XRD,SEM,TEM,and PCT characterization methods.The result shows that the activated alloys are composed of Mg/MgH2 and corresponding REH2+x with nanoscale.The REH2+x grain with Ce and La or Nd functional group have lower nucleation potential barriers than CeH2+x grains as the nucleation location,thus improve the hydrogen absorption kinetics of these alloys among which the Mg90Ce5Nd5 alloy can absorb 90%of the hydrogen within 2 min at 320℃.In addition,the Mg90Ce10 alloy has the lowest activation energy with 103.2 kJ mol-1 and the fastest desorption kinetics,which can release 5 wt%of the hydrogen within 20 min at 320℃.This is a correlation with grain size and the in-suit formed CeH2.73/CeO2 interface.Moreover,the co-doping Ce and La or Nd can effectively disorganize the thermodynamic stability of Mg-based hydrogen storage alloys to a certain degree,but the dehydrogenation kinetics of that still is restricted by the recombination energy of hydrogen ions on the surface. | Hui Yong Shihai Guo Zeming Yuan Yan Qi Dongliang Zhao Yanghuan Zhang | 2020 | Journal of Materials Science & Technology2020，47，16： | 5 |
| 3 | Phase evolution,hydrogen storage thermodynamics and kinetics of ternary Mg90Ce5Sm5 alloy显示文摘Greatly stable thermodynamics and sluggish kinetics impede the practical application of Mg-based hydrogen storage alloys.The modifications of composition and structure are important strategies in turning these hydrogen storage properties.In this study,Mg-based Mg90Ce5 Sm5 ternary alloy fabricated by vacuum induction melting was investigated to explore the performance and the reaction mechanism as hydrogen storage material by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscopy(TEM) and pressure-composition isotherms(PCI) measurements.The results indicate that the Mg-based Mg90Ce5 Sm5 ternary alloy consists of two solid solution phases,including the major phases(Ce,Sm)5 Mg41 and the minor phases(Ce,Sm)Mg12.After hydrogen absorption,these phases transform into the MgH2 and(Ce,Sm)H2.73 phase,while after hydrogen desorption,the MgH2 transforms into the Mg phase,but the(Ce,Sm)H2.73 phases are not changed.The alloy has a reversible hydrogen capacity of about 5.5 wt% H2 and exhibits well isothermal hydrogen absorption kinetics.Activation energy of 106 kJ/mol was obtained from the hydrogen desorption data between 573 and 633 K,which also exhibits the enhanced kinetics compared with the pure MgH2 sample,as a result of bimetallic synergy catalysis function of(Ce,Sm)H2.73 phases.The rate of hydrogen desorption is controlled by the release and recombination of H2 from the Mg surface.Furthermore,the changes of enthalpy and entropy of hydrogen absorption/desorption were calculated to be-80.0 kJ/mol H2,-137.5 J/K/mol H2 and 81.2 kJ/mol H2,139.2 J/K/mol H2,respectively. | Hui Yong Shihai Guo Zeming Yuan Wei Zhang Yan Qi Dongliang Zhao Yanghuan Zhang | 2020 | Journal of Rare Earths2020，38，6： | 3 |
| 4 | A hazard analysis via an improved timed colored petri net with time–space coupling safety constraint显示文摘Petri nets are graphical and mathematical tools that are applicable to many systems for modeling, simulation, and analysis. With the emergence of the concept of partitioning in time and space domains proposed in avionics application standard software interface(ARINC 653), it has become difficult to analyze time–space coupling hazards resulting from resource partitioning using classical or advanced Petri nets. In this paper, we propose a time–space coupling safety constraint and an improved timed colored Petri net with imposed time–space coupling safety constraints(TCCP-NET) to fill this requirement gap. Time–space coupling hazard analysis is conducted in three steps: specification modeling, simulation execution, and results analysis. A TCCP-NET is employed to model and analyze integrated modular avionics(IMA), a real-time, safety-critical system. The analysis results are used to verify whether there exist time–space coupling hazards at runtime. The method we propose demonstrates superior modeling of safety-critical real-time systems as it can specify resource allocations in both time and space domains. TCCP-NETs can effectively detect underlying time–space coupling hazards. | Li Zelin Wang Shihai Zhao Tingdi Liu Bin | 2016 | Chinese Journal of Aeronautics2016，29，4： | 2 |
| 5 | Effects of substituting Ni with M (M=Cu, Al and Mn) on microstructures and electrochemical characteristics of La-Mg-Ni system (PuNi_3-type) electrode alloys显示文摘In order to improve the electrochemical cycle stability of La-Mg-Ni system (PuNi3-type) hydrogen storage alloy, Ni in the alloys was partially substituted by M (M=Cu, Al, Mn). A new La-Mg-Ni system electrode alloys La0.7Mg0.3Ni2.55-xCo0.45Mx (M=Cu, Al, Mn; x=0, 0.1) were prepared by casting and rapid quenching. The effects of element substitution and rapid quenching on the microstructures and electrochemical performances of the alloys were investigated. The results by XRD, SEM and TEM show that the alloys have a multiphase structure, including the (La, Mg)Ni3 phase, the LaNi5 phase and the LaNi2 phase. The rapid quenching and element substitution have an imperceptible influence on the phase compositions of the alloys, but both change the phase abundance of the alloys. The rapid quenching significantly improves the composition homogeneity of the alloys and markedly decreases the grain size of the alloys. The Cu substitution promotes the formation of an amorphous phase in the as-quenched alloy, and a reversal result by the Al substitution. The electrochemical measurement indicates that the element substitution decreases the discharge capacity of the alloys, whereas it obviously improves the cycle stability of the alloys. The positive influence of element substitution on the cycle life of the alloys is in sequence Al>Cu>Mn, and negative influence on the discharge capacity is in sequence Al>Mn>Cu. The rapid quenching significantly enhances the cycle stability of the alloys, but it leads to a different extent decrease of the discharge capacity of the alloys. | ZHANG Yanghuan ZHAO Dongliang DONG Xiaoping REN Huiping GUO Shihai WANG Xinlin | 2006 | Rare Metals2006，25，z1： | 2 |
| 6 | Comparative proteomics analyses of intraspecific differences in the response of Stipa purpurea to drought显示文摘Stipa purpurea is widely distributed along a large precipitation gradient on the Tibetan Plateau.This implies that S.purpurea from different populations may have different responses to drought stress.To explore this we compared the morphological and physiological changes of S.purpurea seedlings cultivated from seeds from Gar County and Nagqu County after 7 and 14 days of drought stress and subsequent rewatering.The results showed that S.purpurea plants from the more arid Gar area were more tolerant to drought stress than that from Nagqu.To investigate the potential mechanisms underlying this difference,we used i TRAQ quantitative proteomics technology to analyze protein dynamics in S.purpurea samples treated with 7 days of drought stress and subsequent re-watering.The results indicated that,during the process of drought and re-watering treatments,there were differentially expressed proteins in either or both S.purpurea populations.These differential proteins were divided into 24 functional categories that were mainly associated with stress response,the antioxidant system,photosynthesis,carbohydrate metabolism,and post-translational modifications.According to these results,we concluded that the molecular basis of stronger drought resistance likely lies in the specific up-regulation or higher expression of many proteins involved in stress response,the antioxidant system,post-translational modification and osmotic regulation in S.purpurea from Gar County compared with that from Nagqu.This study improves our understanding of the intraspecific differences in drought resistance within S.purpurea populations,which helps to understand the distribution of S.purpurea along the moisture gradient,as well as the effect of climate change on this species. | Xiong Li Yunqiang Yang Shihai Yang Xudong Sun Xin Yin Youjie Zhao Yongping Yang | 2016 | 植物分类与资源学报2016，38，2： | 2 |
| 7 | Hydrogen Storage Kinetics of Nanocrystalline and Amorphous LaMg_(12)-Type Alloy–Ni Composites Synthesized by Mechanical Milling显示文摘The nanocrystalline and amorphous LaMg_(11)Ni + x wt% Ni(x = 100, 200) composites were synthesized by the mechanical milling, and their gaseous and electrochemical hydrogen storage kinetics performance were systematically investigated. The results indicate that the as-milled composites exhibit excellent hydrogen storage kinetic performances, and increasing Ni content significantly facilitates the improvement of the hydrogen storage kinetics properties of the composites. The gaseous and electrochemical hydrogen storage kinetics of the composites reaches a maximum value with the variation of milling time.Increasing Ni content and milling time both make the hydrogen desorption activation energy lower, which are responsible for the enhancement in the hydrogen storage kinetics properties of the composites. The diffusion coefficient of hydrogen atom and activation enthalpy of charge transfer on the surface of the as-milled composites were also calculated, which are considered to be the dominated factors for the electrochemical high rate discharge ability. | Yanghuan Zhang Baowei Li Huiping Ren Tai Yang Shihai Guo Yan Qi Dongliang Zhao | 2016 | Journal of Materials Science & Technology2016，32，3： | 1 |
| 8 | Effect of low dose fractionated radiation on reversing cisplatin resistance in ovarian carcinoma via VEGF and mTOR显示文摘Objective To investigate the mechanism of low-dose fractionated radiation on reversing cisplatin resistance in ovarian carcinoma via vascular endothelial growth factor(VEGF) and mammalian target of rapamycin(mTOR) in vivo.Methods Human cisplatin-resistant ovarian carcinoma cells(SKOV3/DDP) were injected into nude mice to establish ovarian cancer xenografts. The mice were randomly divided into three groups: a control group, a low-dose fractionated radiation(LDRFT) group, and a conventional-dose radiation group. Each group was exposed to 0 cGy, 50 cGy, and 200 cGy radiation, respectively, for 4 weeks, up to a total of 8.0 Gy. Mice in the LDFRT group were irradiated twice daily with 6 hour intermissions on day 1 and 2 of every week for a total of 4 weeks. Conventional-dose group mice were given a single 200 cGy radiation dose on the first day each week for a total of 4 weeks. Maximum horizontal and vertical diameters of the tumors were measured every other day and used to create a tumor growth curve. After 4 weeks of irradiation, we dissected the tumor tissue and calculated the tumor inhibition rate. RT-PCR detected the expression of VEGF and m TOR, and Western blots detected the expression of corresponding proteins.Results Both LDRFT and conventional-dose radiation inhibited the growth of tumor cells, and growth of tumors in the two radiation groups compared with growth in the control group were significantly different(P < 0.05). The rate of tumor inhibition in the LDFRT group(37.5603%) was lower than in the conventionaldose group(47.4446%), but there was no significant difference(P 0.05). Compared with the other two groups, the m RNA expression of VEGF was significantly lower in the LDFRT group(P < 0.05), but there was no obvious difference between the conventional-dose and control groups. There was no obvious difference in the m RNA expression of m TOR among the three groups, but the expression of the protein p-m TOR was lower in the LDFRT group(P < 0.05), as confirmed by Western blotting.Conclusion LDFRT is as effective at inhibiting the growth of tumor cells as conventional-dose radiation. In addition, LDFRT could deregulate the expression of VEGF and p-m TOR, and may therefore play a vital role in reversing cisplatin resistance in ovarian cancer. | Xingyan Ju Shihai liu Donghai Liang Tao Jiang Ronghui Yuan Wei Zhao Hongsheng Yu | 2017 | Oncology and Translational Medicine2017，3，4： | 1 |
| 9 | A new numerical method for dem?block and particle model显示文摘 | Shihai Li Manhong Zhao Yuannian Wang Ying Rao | 2004 | International Journal of Rock Mechanics and Mining Sciences2004，，3： | 1 |
| 10 | Stochastic structural model of rock and soil aggregates by continumm-based discrete element method显示文摘 | Wang Y N Zhao M H Li Shihai | 2005 | Science in China Series E-Engineering&Materials Science2005，，95： | 1 |
| 11 | Identification of potential immune-related prognostic biomarkers of lung cancer using gene co-expression network analysis显示文摘Objective The objective of this study was to identify new carcinogenetic hub genes and develop the integration of differentially expressed genes to predict the prognosis of lung cancer.Methods GSE139032 microarray data packages were downloaded from the Gene Expression Omnibus for planning,testing,and review of data.We identified KRT6C,LAMC2,LAMB3,KRT6A,and MYEOV from a key module for validation.Results We found that the five genes were related to a poor prognosis,and the expression levels of these genes were associated with tumor stage.Furthermore,Kaplan-Meier plotter showed that the five hub genes had better prognostic values.The mean levels of methylation in lung adenocarcinoma(LUAD)were significantly lower than those in healthy lung tissues for the hub genes.However,gene set enrichment analysis(GSEA)for single hub genes showed that all of them were immune-related.Conclusion Our findings demonstrated that KRT6C,LAMC2,LAMB3,KRT6A,and MYEOV are all candidate diagnostic and prognostic biomarkers for LUAD.They may have clinical implications in LUAD patients not only for the improvement of risk stratification but also for therapeutic decisions and prognosis prediction. | Aixia Chen Shengnan Zhao Fei Zhou Hongying Lv Donghai Liang Tao Jiang Rui Liu Lijin Zhu Jingyu Cao Shihai Liu Hongsheng Yu | 2020 | Oncology and Translational Medicine2020，6，6： | 1 |
| 12 | Study on UV Shielding TiO_2 Thin Film Prepared by Sol-Gel Method显示文摘Titanium dioxide (TiO_2) thin films were prepared on microscopes slides by sol-gel and dip-coating processes from specially formulated sols.The results show that there exists anatase and rutile structure of TiO_2 when heat treatment temperature is 450℃,and at 800℃,TiO_2 particle size is of below 100 nm and rutile structure is presented.In the range of 360 nm~400 nm the transmittance of TiO_2 sol increases with the increasing of the concentration of Ti(OC_4H_9)_4 in ethanol solution. The transmittance of TiO_2 films with various number of the layer is measured to be 0% below 320 nm,and the three-layer TiO_2 film is of the best UV resistance in the range of 320 nm~400 nm. | Shihai Zhao Xiaohui Wang Shaobo Xin Qiang Jiang Xiaoping Liang | 2006 | 稀有金属材料与工程2006，35，A03： | 1 |
| 13 | A new numerical method for dem?block and particle model显示文摘 | Shihai Li Manhong Zhao Yuannian Wang Ying Rao | 2004 | International Journal of Rock Mechanics and Mining Sciences2004，，3： | 1 |
| 14 | A new numerical method for 'DEM block and particle model 显示文摘 | Shihai Li Manhong Zhao Yuannian Wang | 2004 | International Journal of Rock Mechanics and Mining Sciences2004，41，3： | 1 |
| 15 | A new numerical method for dem?block and particle model显示文摘 | Shihai Li Manhong Zhao Yuannian Wang Ying Rao | 2004 | International Journal of Rock Mechanics and Mining Sciences2004，，3： | 1 |
| 16 | Self-interference cancellation for cooperative jamming communications with nonideal alignment and channel equalization显示文摘For the security of wireless communications, cooperative jamming can be used to intentionally degrade the signal-to-noise ratios received by eavesdroppers. Unfortunately, this jamming may also propagate to the legal receiver and then become a harmful self-interference(SI), which should be cancelled for reliable detection of the desired signal. In this paper, by comprehensively considering nonideal time-frequency alignment and channel equalization, SI-cancellation capability is investigated for the additive white Gaussian noise channel. Theoretical and simulation results demonstrated that the impact of the frequency alignment error is more serious than that of the time alignment and channel equalization errors. Moreover, it is illustrated that weaker SI power can tolerate a larger range of those nonidealities. | Wenbo GUO Yimin HE Hongzhi ZHAO Shihai SHAO Youxi TANG | 2021 | Science China(Information Sciences)2021，64，11： | 1 |
| 17 | A new numerical method for dem-block and particle model 显示文摘 | LI Shihai ZHAO Manhong WANG Yuannian | 2004 | International Journal of Rock Mechanics and Mining Sciences2004，41，3： | 1 |
| 18 | The hy- drogenation and dehydrogenation hehaviours of Mg20-xLaxNi10 (x = 0 - 6 )alloys prepared by casting and rapid quenching显示文摘 | Zhang Yanghuan Zhao Dongliang Guo Shihai | 2009 | J Alloys Compd2009，476，： | 1 |
| 19 | Improving the intrinsic electronic conductivity of NiMo0_(4) anodes by phosphorous doping for high lithium storage显示文摘Heteroatom doping is one of the most promising strategies toward regulating intrinsically sluggish electronic conductivity and kinetic reaction of transition metal oxides for enhancing their lithium storage.Herein,we designed phosphorus-doped NiMo0_(4) nanorods(P-NiMo0_(4))by using a facile hydrothermal method and subsequent low-temperature phosphorization treatment.Phosphorus doping played an indispensable role in significantly improving electronic conductivity and the Li+diffusion kinetics of NiMo0_(4) materials.Experimental investigation and density functional theory calculation demonstrated that phosphorus doping can expand the interplanar spacing and alter electronic structures of NiMo0_(4) nanorods.Meanwhile,the introduced phosphorus dopant can generate some oxygen vacancies on the surface of NiMo0_(4),which can accelerate Li+diffusion kinetics and provide more active site for lithium storage.As excepted,P-NiMo0_(4) electrode delivered a high specific capacity(1,130 mA·g^(-1) at 100 mA·g^(-1) after 100 cycles),outstanding cycling durability(945 mA·g^(-1) at 500 mA·g^(-1) over 200 cycles),and impressive rate performance(640 mA·g^(-1)at 2,000mA·g^(-1))for lithium ion batteries(LIBs).This work could provide a potential strategy for improving intrinsic conductivity of transition metal oxides as high-performance anodes for LIBs. | Luchao Yue Chaoqun Ma Shihai Yan Zhenguo Wu Wenxi Zhao Qian Liu(ISl) Yonglan Luo Benhe Zhong Fang Zhang Yang Liu Abdulmohsen AN Alshehri Khalid Ahmed Alzahrani Xiaodong Guo Xuping Sun | 2022 | Nano Research2022，15，1： | 1 |
| 20 | Hsa_circ_0002137 stabled by LIN28B promotes osteosarcoma cell growth through the hsa-miR-1246/BCL2 axis显示文摘Circular RNAs(circRNAs)are a novel class of non-coding RNA that have recently shown to have huge capabilities in the regulation of gene expression at the posttranscriptional level.Growing evidence has indicated that circRNAs could serve as competing endogenous RNAs(ceRNAs)to sponge microRNAs(miRNAs)and suppress functions of targeted miRNAs.Osteosarcoma(OS)is the most common malignant primary bone cancer.Hsa_circ_0002137 is upregulated in OS.However,the role of hsa_circ_0002137 in OS remains unclear.Using miRNA pull-down assay,we showed that cir_0002137 sponged hsa-miR-1246,and BCL2 apoptosis regulator(BCL2)mRNA was a potential target of hsa-miR-1246 in human osteosarcoma(HOS)cells.Further,we found that hsa_cir_0002137 could enhance the expression of BCL2 hsa-miR-1246 and promote HOS cell growth through sponging hsa-miR-1246.Moreover,RNA binding protein immunoprecip itation(RIP)assay revealed that lin-28 homolog B(LIN28B)protein associated with hsa_circ_0002137,and LIN28B could increase hsa_circ_0002137 stability and thus accelerate OS cell growth.Our work was the first to study the functions of hsa_circ_0002137,has-miR-1246 and LIN28B in OS,and these results may provide novel therapeutic targets for OS treatment. | FEI ZHANG JIANZHONG LAI RONGHAN HE YI SHI KUN XU SHIHAI JIANG TANGZHAO LIANG WANYU ZHAO WEIDA REN LEI ZHU SONG JIN KUN WANG | 2022 | BIOCELL2022，46，3： | 0 |
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