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| 1 | Comparative analyses of leaf anatomy of dicotyledonous species in Tibetan and Inner Mongolian grasslands显示文摘Knowledge of the leaf anatomy of grassland plants is crucial for understanding how these plants adapt to the environment. Tibetan alpine grasslands and Inner Mongolian temperate grasslands are two major grassland types in northern China. Tibetan alpine grasslands occur in high-altitude regions where the low temperatures limit plant growth. Inner Mongolian temperate grasslands are found in arid regions where moisture is the limiting factor. Few comparative studies concerning the leaf anatomy of grassland plants of the Tibetan Plateau and Inner Mongolian Plateau have been conducted. We examined leaf characteristics at 71 sites and among 65 species, across the alpine grasslands of the Tibetan Plateau and the temperate grasslands of the Inner Mongolian Plateau. We compared the leaf structures of plants with different life forms and taxonomies, and their adaptation to arid or cold environments. We explored relationships among leaf features and the effects of climatic factors (i.e., growing season temperature and precipitation) on leaf characteristics. Our results showed that (i) there were significant differences in leaf anatomy between Tibetan alpine and Inner Mongolian temperate grasslands. Except for mesophyll cell density, the values obtained for thickness of leaf tissue, surface area and volume of mesophyll cells were larger on the Tibetan Plateau than on the Inner Mongolian Plateau. (ii) Within the same family or genus, leaf anatomy showed significant differences between two regions, and trends were consistent with those of whole species. (iii) Leaf anatomy of woody and herbaceous plants also showed significant differences between the regions. Except for mesophyll cell density, the values obtained for the thickness of leaf tissue, and the surface area and volume of mesophyll cells were larger in herbaceous than in woody plants. (iv) Leaf anatomical traits changed accordingly. Total leaf thickness, thicknesses of lower and upper epidermal cells, and surface area and volume of mesophyll cells were positively correlated, while mesophyll cell density was negatively associated with those traits. (v) Growing season temperature had stronger effects on leaf anatomy than growing season precipitation. Although the communities in Tibetan and Inner Mongolian grasslands were similar in appearance, leaf anatomy differed; this was probably due to the combined effects of evolutionary adaptation of plants to environment and environmental stress induced by climatic factors. | MA JianJing JI ChengJun HAN Mei ZHANG TingFang YAN XueDong HU Dong ZENG Hui HE JinSheng | 2012 | Science China(Life Sciences)2012，55，1： | 12 |
| 2 | Current approaches to reduce or eliminate mitochondrial DNA mutations显示文摘Mitochondrial DNA(mt DNA)mutations have been implicated in a broad range of disorders which severely affect human health(Wallace,1999).Some drugs have been developed to slow down pathological changes of mitochondrial disorders.However,there is no effective treatment for patients with mt DNA mutations.mt DNA is less protected and has fewer repair mechanisms than nuclear DNA(n DNA).Such a reality results in a much higher | Liang Yang Tingfang Mei Xiaobing Lin Haite Tang Yi Wu Rui Wang Jinglei Liu Zahir Shah Xingguo Liu | 2016 | Science China(Life Sciences)2016，59，5： | 3 |
| 3 | Prediction of Soil Erosion on Different Underlaying Surface in Construction Period of Xichang to Panzhihua Expressway显示文摘In order to investigate the behavior of soil erosion on the slope of the different underlaying surface during construction,the experiment with natural rainfall on Xichang-Panzhihua high-way was conducted,to quantify the runoff and soil loss. The re-sults show that:① the main type of soil erosion is gully erosion,the amount of soil erosion caused by gully erosion is higher than that by surface erosion. ② The principal factor causing soil ero-sion on the slope of the embankment is individual amount of pre-cipitation,the width of the embankment and rain intensity. ③ The principal factor causing soil erosion on the cutting slope is indi-vidual amount of precipitation,the width of the cutting slope and rain intensity. ④ The principal factor causing soil erosion on the slope of the dumped soil area is individual amount of precipitation,the width of the flat roof and rain intensity. There are well linear relationships between the amount of soil erosion and the principal factor,and their correlation coefficient are 0.935 7-0.999 8. | CHEN Tingfang CUI Peng CHEN Xingchang | 2007 | Wuhan University Journal of Natural Sciences2007，12，4： | 2 |
| 4 | Universal enzymatic numerical P systems with small number of enzymatic variables显示文摘Numerical P systems(for short, NP systems) are distributed and parallel computing models inspired from the structure of living cells and economics. Enzymatic numerical P systems(for short, ENP systems) are a variant of NP systems, which have been successfully applied in designing and implementing controllers for mobile robots. Since ENP systems were proved to be Turing universal, there has been much work to simplify the universal systems, where the complexity parameters considered are the number of membranes, the degrees of polynomial production functions or the number of variables used in the systems.Yet the number of enzymatic variables, which is essential for ENP systems to reach universality, has not been investigated. Here we consider the problem of searching for the smallest number of enzymatic variables needed for universal ENP systems. We prove that for ENP systems as number acceptors working in the all-parallel or one-parallel mode, one enzymatic variable is sufficient to reach universality; while for the one-parallel ENP systems as number generators, two enzymatic variables are sufficient to reach universality.These results improve the best known results that the numbers of enzymatic variables are 13 and 52 for the all-parallel and one-parallel systems, respectively. | Zhiqiang ZHANG Tingfang WU ANDrei PAUN Linqiang PAN | 2018 | Science China(Information Sciences)2018，61，9： | 2 |
| 5 | LTE Femtocells: System Design and Performance Analysis显示文摘 | BARBIERI A DAMNJANOVIC A JI Tingfang | 2012 | IEEE Journal on Selected Areas in Communications2012，30，3： | 1 |
| 6 | Turbo-coded ARQ schemes for DS-CDMA data netwo rks over fading and shadowing channels: throughput, delay, and energy efficienc y 显示文摘 | Wayne E S | 2000 | IEEE JSAC2000，18，13： | 1 |
| 7 | A novel murine model to deplete hepatic stellate cells uncovers their role in amplifying liver damage in mice显示文摘 | Juan E. Puche Youngmin A. Lee Jingjing Jiao Costica Aloman Maria I. Fiel Ursula Mu?oz Thomas Kraus Tingfang Lee Hal F. Yee Scott L. Friedman | 2013 | Hepatology2013，，： | 1 |
| 8 | Retrieval study of 1-dropsonde's motion显示文摘 | Fand Hanxian Huang Sixun Wang Tingfang | 2004 | Journal of Hydrodynamics:Ser A2004，19，1： | 1 |
| 9 | Master curve method of cumulative damage for prediction of service life显示文摘 | Zhao Bohua | 1999 | J of Beijing Inst of Technology1999，，1： | 1 |
| 10 | Synthesis of New Catalytic Material Molybdenum Nitride in Mixture of Nitrogen and Hydrogen显示文摘 | XIE Guohuang BAI Tingfang AN Lidun WANG Hanqin 1) (Lanzhou Institute of Chemical physics The Chinese Academy of Sciences Lanzhou 730000) YOU Jinmao (Department of Chemistry Qufu Normal University Qufu 273165) Keywords Synthesis Mo | 1997 | 分子催化1997，，02： | 1 |
| 11 | Relative efficiency and produc- tivity: a preliminary exploration of public hospitals in Beijing, China 显示文摘 | HAO L SIPING D TINGFANG L | 2014 | BMC Health Services Research2014，14，1： | 1 |
| 12 | Study on the synthesis and properties of polyvinylpyrrolidinone显示文摘 | Shi Tiejun Ma Tingfang | 2002 | Journal Func- tional Polymer2002，151，： | 1 |
| 13 | Study on the distribution of non-point source pollution in the watershed of Miyun reservoir, Beijing, China 显示文摘 | Wang Xiaoyan Li Tingfang Xu Qian | 2001 | Water Science and Technology2001，44，7： | 1 |
| 14 | Magnesium-based materials in orthopaedics:material properties and animal models显示文摘As a new generation of medical metal materials,degradable magnesium-based materials have excellent mechanical properties and osteogenic promoting ability,making them promising materials for the treatment of refractory bone diseases.Animal models can be used to understand and evaluate the performance of materials in complex physiological environments,providing relevant data for preclinical evaluation of implants and laying the foundation for subsequent clinical studies.To date,many researchers have studied the biocompatibility,degradability and osteogenesis of magnesium-based materials,but there is a lack of review regarding the effects of magnesium-based materials in vivo.In view of the growing interest in these materials,this review briefly describes the properties of magnesium-based materials and focuses on the safety and efficacy of magnesium-based materials in vivo.Various animal models including rats,rabbits,dogs and pigs are covered to better understand and evaluate the progress and future of magnesium-based materials.This literature analysis reveals that the magnesium-based materials have good biocompatibility and osteogenic activity,thus causing no adverse reaction around the implants in vivo,and that they exhibit a beneficial effect in the process of bone repair.In addition,the degradation rate in vivo can also be improved by means of alloying and coating.These encouraging results show a promising future for the use of magnesium-based materials in musculoskeletal disorders. | Xirui Jing Qiuyue Ding Qinxue Wu Weijie Su Keda Yu Yanlin Su Bing Ye Qing Gao Tingfang Sun Xiaodong Guo | 2021 | Biomaterials Translational2021，2，3： | 1 |
| 15 | Study of MO2N catalyst activity and stability in CO oxidation显示文摘 | Guohuang Xie Tingfang Bai Lidun An Hanqing Wang Jinmao You | 1998 | Reaction Kinetics and Catalysis Letters1998，，2： | 1 |
| 16 | Effects of vinpoeetine and ozagrel on behavioral recovery of rats after global brain ischemia 显示文摘 | JINCAI W TINGFANG D YONGHENG Z | 2014 | J Clin Neurosci2014，21，4： | 1 |
| 17 | Study on the distribution of non-point source pollution in the watershed of Miyun reservoir, Beijing, China 显示文摘 | Wang Xiaoyan Li Tingfang Xu Qian | 2001 | Water Science and Technology2001，44，7： | 1 |
| 18 | CD39 is an ecto-(Ca2+,Mg2+)-apyrase显示文摘 | Wang Tingfang Guidotti G | 1996 | J Biolog Chem1996，271，17： | 1 |
| 19 | Relative efficiency and productivi- ty: a preliminary exploration of public hospitals in Beijing, China显示文摘 | Li Hao Dong Siping Liu Tingfang | 2014 | BMC Health Services Research2014，14，1： | 1 |
| 20 | In situ bone regeneration with sequential delivery of aptamer and BMP2 from an ECM-based scaffold fabricated by cryogenic free-form extrusion显示文摘In situ tissue engineering is a powerful strategy for the treatment of bone defects.It could overcome the limitations of traditional bone tissue engineering,which typically involves extensive cell expansion steps,low cell survival rates upon transplantation,and a risk of immuno-rejection.Here,a porous scaffold polycaprolactone(PCL)/decellularized small intestine submucosa(SIS)was fabricated via cryogenic free-form extrusion,followed by surface modification with aptamer and PlGF-2_(123-144)*-fused BMP2(pBMP2).The two bioactive molecules were delivered sequentially.The aptamer Apt19s,which exhibited binding affinity to bone marrow-derived mesenchymal stem cells(BMSCs),was quickly released,facilitating the mobilization and recruitment of host BMSCs.BMP2 fused with a PlGF-2_(123-144)peptide,which showed“super-affinity”to the ECM matrix,was released in a slow and sustained manner,inducing BMSC osteogenic differentiation.In vitro results showed that the sequential release of PCL/SIS-pBMP2-Apt19s promoted cell migration,proliferation,alkaline phosphatase activity,and mRNA expression of osteogenesis-related genes.The in vivo results demonstrated that the sequential release system of PCL/SIS-pBMP2-Apt19s evidently increased bone formation in rat calvarial critical-sized defects compared to the sequential release system of PCL/SIS-BMP2-Apt19s.Thus,the novel delivery system shows potential as an ideal alternative for achieving cell-free scaffold-based bone regeneration in situ. | Tingfang Sun Chunqing Meng Qiuyue Ding Keda Yu Xianglin Zhang Wancheng Zhang Wenqing Tian Qi Zhang Xiaodong Guo Bin Wu Zekang Xiong | 2021 | Bioactive Materials2021，6，11： | 1 |
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