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| 1 | A community-derived classification for extant lycophytes and ferns显示文摘发展史长通知了蕨类植物分类。当我们推断进化的树的能力改善了,针对认出生来的组的分类变得逐渐地预兆、稳定。这里,我们为 lycophytes 和蕨纲植物提供一个现代、全面分类,在下面,利用一条基于社区的途径类水平。我们 monophyly 用作主要标准让 taxa,而且目的识别保存两个广泛地被接受的存在 taxa 和界限并且与我们蕨类植物发展史的理解一致。总共,这个分类对待一在 337 个类, 51 个家庭, 14 目,和二个班估计了 11 916 种类。这个分类没在 lycophyte 和蕨纲植物上作为最后的词被打算分类,而是当前的假设的概括陈述,源于最好的可得到的数据并且在问题由熟悉植物的那些大多数塑造了。我们希望它将在蕨类植物上为最近的文学的那些想要的参考用作一个资源发展史和分类,为指导未来调查的一个框架,和推进讲话的刺激。 | Eric Schuettpelz Harald Schneider Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou | 2016 | Journal of Systematics and Evolution2016,54,6: | 44 |
| 2 | Intracellular tat of human immunodeficiency virus type 1 activates lytic cycle replication of Kaposi's sarcoma-associated herpesvirus. Role of JAK/STAT signaling显示文摘 | Zeng, Y. Zhang, X. H. Huang, Z. Cheng, L. Yao, S. H. Qin, D. Chen, X. Y. Tang, Q. Lv, Z. G. Zhang, L. Lu, C. | 2007 | 南京医科大学学报(自然科学版)2007,27,5: | 31 |
| 3 | Root Physiological and Morphological Characteristics of Two Rice Cultivars with Different Nitrogen-Use Efficiency显示文摘The variation in nitrogen (N) uptake by rice has been widely studied but differences in rice root morphology that may contribute to this variation are not completely understood. Field and greenhouse experiments were carried out to study N accumulation, root dry weights, total root lengths, root surface areas, and root bleeding rates of two rice cultivars, Elio with low N-use efficiency and Nanguang with high N-use efficiency. Low (1 mmol N L-1) and high (5 mmol N L-1) N applications were established in the greenhouse experiment, and the N rates were 0, 120, and 240 kg ha-1 in the field experiments at Jiangning and Jiangpu farms, Nanjing, China. The results showed that the N accumulation, root dry weight, total root length, and root surface area increased with an increase in N application. At the heading stage, N accumulation in the shoots and roots of Nanguang was greater than that of Elio in the field experiments and that of Elio at 5 mmol N L-1 in the greenhouse experiment. After the heading stage, N accumulation was higher for Nanguang at both 1 and 5 mmol N L-1 in the greenhouse experiment. The total root length and root surface area were significantly different between the two cultivars. Over the range of the fertilizer application rates, the root lengths of Nanguang at Jiangning Farm were 49%-61% greater at booting and 26%-39% greater at heading than those of Elio, and at Jiangpu Farm they were 22%-42% and 26%-38% greater, respectively. Nanguang had a greater root bleeding rate than Elio. It was concluded that the N-use efficiency of the two rice cultivars studied depended to a great extent on the root morphological parameters and root physiological characteristics at different growth stages. | FAN Jian-Bo ZHANG Ya-Li D. TURNER DUAN Yin-Hua WANG Dong-Sheng SHEN Qi-Rong | 2010 | Pedosphere2010,20,4: | 33 |
| 4 | Relationship Between Vegetation Restoration and Soil Microbial Characteristics in Degraded Karst Regions: A Case Study显示文摘The mechanism of vegetation restoration on degraded karst regions has been a research focus of soil science and ecology for the last decade.In an attempt to preferably interpret the soil microbiological characteristic variation associated with vegetation restoration and further to explore the role of soil microbiology in vegetation restoration mechanism of degraded karst regions,we measured microbial biomass C and basal respiration in soils during vegetation restoration in Zhenfeng County of southwestern Guizhou Province,China.The community level physiological profiles(CLPP) of the soil microbial community to were estimated determine if vegetation changes were accompanied by changes in functioning of soil microbial communities.The results showed that soil microbial biomass C and microbial quotient(microbial biomass C/organic C) tended to increase with vegetation restoration,being in the order arboreal community stage > shrubby community stage > herbaceous community stage > bare land stage.Similar trend was found in the change of basal respiration(BR).The metabolic quotient(the ratio of basal respiration to microbial biomass,qCO 2) decreased with vegetation restoration,and remained at a constantly low level in the arboreal community stage.Analyses of the CLPP data indicated that vegetation restoration tended to result in higher average well color development,substrate richness,and functional diversity.Average utilization of specific substrate guilds was highest in the arboreal community stage.Principle component analysis of the CLPP data further indicated that the arboreal community stage was distinctly different from the other three stages.In conclusion,vegetation restoration improved soil microbial biomass C,respiration,and utilization of carbon sources,and decreased qCO 2,thus creating better soil conditions,which in turn could promote the restoration of vegetation on degraded karst regions. | WEI Yuan YU Li-Fei ZHANG Jin-Chi YU Yuan-Chun D. L. DEANGELIS | 2011 | Pedosphere2011,21,1: | 31 |
| 5 | EFFECTS OF SPECIFIED BLANK SIZE ON BODY WRINKLING DURING HYDRODYNAMIC DEEP DRAWING OF TAPERED RECTANGULAR BOX显示文摘In this paper, the forming features of tapered rectangular box during hydrodynamic deep drawing are studied by means of FEM.The effect rules of square blank corner corner amount on body wrinkling are recognized and corresponding methods are discussed. At last, the results of FEM are verified by experi- ment. | L. H. Lang, D. C. Kang, S. H. Zhang, Z. R. Wang, S. J. Yuan, K. B. Nielsen and J. Dancket 1) Department of Materials Engineering, Harbin Institute of Technology, Harbin 150001, China 2) Aalberg University, Denmark | 2000 | Acta Metallurgica Sinica(English Letters)2000,13,2: | 21 |
| 6 | High Temperature Effects on Electron and Proton Circuits of Photosynthesis显示文摘Photosynthesis is sensitive to high temperature with reversible declines during moderate stress and irreversible damage with more severe stress. While many studies have focused on the irreversible damage,the reversible changes can tell how photosynthesis tolerates high temperature. Knowing how high temperature is tolerated could lead to ways of extending high temperature tolerance. New analytical methods have been used to probe electron and proton circuits of intact leaves at high temperature. Combined with previous work with isolated systems, it appears that there is a large change in redox distribution among thylakoid components. Photosystem I becomes more reduced but photosystem II and the stroma become more oxidized. Several lines of evidence support the existence of significant cyclic electron flow at high temperature. It is hypothesized that these changes allow for adenosine tri-phosphate homeostasis and maintenance of an energy gradient across the thylakoid membrane, helping to keep it from suffering irreversible damage at high temperature. | Thomas D. Sharkey Ru Zhang | 2010 | Journal of Integrative Plant Biology2010,52,8: | 19 |
| 7 | Ozone sensitivity analysis with the MM5-CMAQ modeling system for Shanghai显示文摘Ozone has become one of the most important air pollution issues around the world. This article applied both O 3 /(NOy-NOx) and H 2 O 2 /HNO 3 indicators to analyze the ozone sensitivity in urban and rural areas of Shanghai, with implementation of the MM5-CMAQ modeling system in July, 2007. The meteorological parameters were obtained by using the MM5 model. A regional emission inventory with spatial and temporal allocation based on the statistical data has been developed to provide input emission data to the MM5-CMAQ modeling system. Results showed that the ozone concentrations in Shanghai show clear regional differences. The ozone concentration in rural areas was much higher than that in the urban area. Two indicators showed that ozone was more sensitive to VOCs in urban areas, while it tended to be NOx sensitive in rural areas of Shanghai. | Li Li Changhong Chen Cheng Huang Haiying Huang Gangfeng Zhang Yangjun Wang Minghua Chen Hongli Wang Yiran Chen D. G. Streets Jiamo Fu | 2011 | Journal of Environmental Sciences2011,23,7: | 18 |
| 8 | Assessing Soil Erosion Rates on Manually-Tilled Hillslopes in the Sichuan Hilly Basin Using ^(137)Cs and ^(210)Pb_(ex) Measurements显示文摘Purple soils are widely distributed in the Sichuan Hilly Basin and are highly susceptible to erosion, especially on the cultivated slopes. Quantitative assessment of the erosion rates is, however, difficult due to small size of the plots of the manually-tilled land, the complex land use, and steep hillslopes. 137Cs and 210Pbex (excess 210Pb) tracing techniques were used to investigate the spatial pattern of soil erosion rates associated with slope-land under hoe tillage in Neijiang of the Sichuan Hilly Basin. The 137Cs and 210Pbex inventories at the top of the cultivated slope were extremely low, and the highest inventories were found at the bottom of the cultivated slope. By combining the erosion rates estimates provided by both 137Cs and 210Pbex measurements, the weighted mean net soil loss from the study slope was estimated to be 3100 t km-2 year'1, which was significantly less than 6930 t km-2 year-1 reported for runoff plots on a 10°cultivated slope at the Suining Station of Soil Erosion. The spatial pattern of soil erosion rates on the steep agricultural land showed that hoe tillage played an important role in soil redistribution along the slope. Also, traditional farming practices had a significant role in reducing soil loss, leading to a lower net erosion rate for the field. | ZHENG Jin-Jun HE Xiu-Bin D. WALLING ZHANG Xin-Bao D. FLANAGAN QI Yong- Qing | 2007 | Pedosphere2007,17,3: | 17 |
| 9 | NEURAL NETWORK MODELING FOR ESTIMATION OF SCOUR DEPTH AROUND BRIDGE PIERS显示文摘It is essential to predict the scour depth around bridge piers for hydraulic engineers involved in the economical design of bridge pier foundation. Conventional investigations have long been of the opinion that empirical scour prediction equations based on laboratory data over predict scour depths. In this article, the Back-Propagation Neural Network (BPN) was applied to predict the scour depth in order to overcome the problem of exclusive and the nonlinear relationships. The observations obtained from thirteen states in USA was verified by the present model. From the comparison with conventional experimental methods, it can be found that the scour depth around bridge piers can be efficiently predicted using the BPN. | LEE T. L. JENG D. S. ZHANG G. H. HONG J. H. | 2007 | Journal of Hydrodynamics2007,19,3: | 13 |
| 10 | LASER CLADDED TiCN COATINGS ON THE SURFACE OF TITANIUM显示文摘Laser cladded coatings of TiCN were produced on the surface of titanium. To obtain the optimal techniques, several conditions were tested by varying the laser scanning rate. The choice of shielding gas was also studied. The cladded coatings were then evaluated from the surface mechanics point of view based on their microhardness. The microstructure of some interesting samples was investigated by optical micrographs (OM). The results showed that under the condition of fixed pulse frequency and pulse width, the laser scanning rate and the shielding gas are the main factors influencing the components of coatings. TiCN coatings were decompounded and oxidized during the cladding process in the condition of no shielding gas of N2. X-ray diffraction results indicated that the composite coatings composed of TiCN, TiC, Ti2N, and TiO2 were produced using appropriate techniques. The results indicated that the best condition in terms of the surface microhardness is obtained when the scanning rate is 1.5mm / s, the pulse frequency is 15Hz, the pulse width is 3.0ms, and N2 is chosen as the shielding gas. The microhardness of the composite coatings is about 1331kg · mm - 2, which is about 4 times that of the substrate. The optical micrographs indicated that the cladding zone is made up of TiCN, TiO2, and some interdendritic Ti, but the diffusion zone mainly consists of the dendrites phase, and the cladded depth is about 80m, which is more than 2 times that of the laser nitrided sample. There were no microcracks or air bubbles in the cladded sample, which was cladded using the above optimal techniques. | Y.L. Yang D. Zhang H.S. Kou C. S. Liu | 2007 | Acta Metallurgica Sinica(English Letters)2007,20,3: | 13 |
| 11 | Voluntary exercise-induced neurogenesis in the postischemic dentate gyrus is associated with spatial memory recovery from stroke显示文摘 | Luo, C. X. Jiang, J. Zhou, Q. G. Zhu, X. J. Wang, W. Zhang, Z. J. Han, X. Zhu, D. Y. | 2007 | 南京医科大学学报(自然科学版)2007,27,10: | 13 |
| 12 | A numerical method for structural uncertainty response computation显示文摘A novel numerical procedure,which realizes the stochastic analysis with dimensional reduction integration(DRI) ,C-type Gram-Charlier(CGC) series,and finite element(FE) model,is proposed to assess the probability distribution of structural per-formance. From the relationship between the weighting function of orthogonal polynomial and probability density function(PDF) of random variable,the numerical integration formulas are derived for moment computation. Then,distribution of structural uncertainty response can be approximated by the CGC series with the calculated moments. Three engineering appli-cations for the distribution of,the maximum displacement of a ten-bar planer truss,natural frequency of an auto frame,and Von-Mises stress of a bending pipe,are employed to illustrate the computational efficiency and accuracy of the proposed methodology. As compared with plain Monte Carlo simulation(MCS) ,the method can obtain the accurate distribution of structural performance. Especially at the tail region of cumulative distribution function(CDF) ,results have shown the satisfy-ing estimators for small probabilities,say,P10-4,10-3]. That implies the method could be trusted for structural failure prob-ability prediction. As the computational efficiency is concerned,the procedure could save more than two orders of computational resources as compared with the direct numerical integration(NI) and MCS. Furthermore,realization of the procedure does not require computing the performance gradient or Hessian matrix with respect to random variables,or reshaping the finite element matrix as other stochastic finite element(SFE) codes. Therefore,it should be an efficient and reliable routine for uncertainty structural analysis. | ZHANG XuFang PANDEY Mahesh D. ZHANG YiMin | 2011 | Science China(Technological Sciences)2011,54,12: | 11 |
| 13 | Biogenic production of DMSP and its degradation to DMS—their roles in the global sulfur cycle显示文摘Dimethyl sulfide(DMS) is the most abundant form of volatile sulfur in Earth’s oceans, and is mainly produced by the enzymatic clevage of dimethylsulfoniopropionate(DMSP). DMS and DMSP play important roles in driving the global sulfur cycle and may affect climate. DMSP is proposed to serve as an osmolyte, a grazing deterrent, a signaling molecule, an antioxidant, a cryoprotectant and/or as a sink for excess sulfur. It was long believed that only marine eukaryotes such as phytoplankton produce DMSP. However, we recently discovered that marine heterotrophic bacteria can also produce DMSP, making them a potentially important source of DMSP. At present, one prokaryotic and two eukaryotic DMSP synthesis enzymes have been identified.Marine heterotrophic bacteria are likely the major degraders of DMSP, using two known pathways: demethylation and cleavage.Many phytoplankton and some fungi can also cleave DMSP. So far seven different prokaryotic and one eukaryotic DMSP lyases have been identified. This review describes the global distribution pattern of DMSP and DMS, the known genes for biosynthesis and cleavage of DMSP, and the physiological and ecological functions of these important organosulfur molecules, which will improve understanding of the mechanisms of DMSP and DMS production and their roles in the environment. | Xiao-Hua Zhang Ji Liu Jingli Liu Guipeng Yang Chun-Xu Xue Andrew R. J. Curson Jonathan D. Todd | 2019 | Science China(Life Sciences)2019,62,10: | 11 |
| 14 | Experimental investigation of time-dependent cavitation in an oscillatory squeeze film显示文摘The occurrence of time-dependent cavitation and tensile stress in an oscillatory oil squeeze film were investigated experimentally. The test apparatus was a simple thrust bearing consisting of two parallel circular plates separated by a thin viscous oil film. During the test, one plate was at rest while the other (transparent) oscillated in a direction normal to its surface. This test configuration was chosen to avoid the rotational motion and complicated geometry of a squeeze film journal bearing. The frequency of oscillation was in the range of 5 to 50 Hz and was controlled by an electro-magnetic exciter. The process of cavity formation and its subsequent development was recorded by a high-speed video camera. Concomitant pressure in the oil film was measured both within and without the cavitation region. It was found that both tensile stress and cavities existed in a squeeze film under certain working conditions. | CHEN Xiaoyang, SUN Meili, WANG Wen, D. C. SUN, ZHANG Zhiming & WANG XiaojingResearch Institute of Bearings, Shanghai University, Shanghai 200072, China Department of Mechanical Engineering, State University of New York at Binghamton, NY 13902-6000, USA | 2004 | Science China(Physics,Mechanics & Astronomy)2004,47,z1: | 10 |
| 15 | Temporal Variability in Soil CO_2 Emission in an Orchard Forest Ecosystem显示文摘Temporal variability in soil CO2 emission from an orchard was measured using a dynamic open-chamber system for measuring soil CO2 efflux in Heshan Guangdong Province, in the lower subtropical area of China. Intensive measurements were conducted for a period of 12 months. Soil CO2 emissions were also modeled by multiple regression analysis from daily air temperature, dry-bulb saturated vapor pressure, relative humidity, atmospheric pressure, soil moisture, and soil temperature. Data was analyzed based on soil moisture levels and air temperature with annual data being grouped into either hot-humid season or relatively cool season based on the precipitation patterns. This was essential in order to acquire simplified exponential models for parameter estimation. Minimum and maximum daily mean soil CO2 efflux rates were observed in November and July, with respective rates of 1.98 ± 0.66 and 11.04 ± 0.96 μmol m-2 s-1 being recorded. Annual average soil CO2 emission (FCO2) was 5.92 μmol m-2 s-1. Including all the weather variables into the model helped to explain 73.9% of temporal variability in soil CO2 emission during the measurement period. Soil CO2 efflux increased with increasing soil temperature and soil moisture. Preliminary results showed that Q10, which is defined as the difference in respiration rates over a 10 -C interval, was partly explained by fine root biomass. Soil temperature and soil moisture were the dominant factors controlling soil CO2 efflux and were regarded as the driving variables for CO2 production in the soil. Including these two variables in regression models could provide a useful tool for predicting the variation of CO2 emission in the commercial forest soils of South China . | LI Yue-Lin D. OTIENO K. OWEN ZHANG Yun J. TENHUNEN RAO Xing-Quan LIN Yong-Biao | 2008 | Pedosphere2008,18,3: | 10 |
| 16 | Hierarchical activation of compartmentalized pools of AMPK depends on severity of nutrient or energy stress显示文摘AMPK, a master regulator of metabolic homeostasis, is activated by both AMP-dependent and AMP-independent mechanisms. The conditions under which these different mechanisms operate, and their biological implications are unclear. Here, we show that, depending on the degree of elevation of cellular AMP, distinct compartmentalized pools of AMPK are activated, phosphorylating different sets of targets. Low glucose activates AMPK exclusively through the AMP-independent, AXIN-based pathway in lysosomes to phosphorylate targets such as ACC1 and SREBP1c, exerting early anti-anabolic and pro-catabolic roles. Moderate increases in AMP expand this to activate cytosolic AMPK also in an AXIN-dependent manner. In contrast, high concentrations of AMP, arising from severe nutrient stress, activate all pools of AMPK independently of AXIN. Surprisingly, mitochondrion-localized AMPK is activated to phosphorylate ACC2 and mitochondrial fission factor (MFF) only during severe nutrient stress. Our findings reveal a spatiotemporal basis for hierarchical activation of different pools of AMPK during differing degrees of stress severity. | Yue Zong Chen-Song Zhang Mengqi Li Wen Wang Zhichao Wang Simon A. Hawley Teng Ma Jin-Wei Feng Xiao Tian Qu Qi Yu-Qing Wu Cixiong Zhang Zhiyun Ye Shu-Yong Lin Hai-Long Piao D. Grahame Hardie Sheng-Cai Lin | 2019 | Cell Research2019,29,6: | 8 |
| 17 | Evaluation of Six Methods for Estimating Synonymous and Non-synonymous Substitution Rates显示文摘Methods for estimating synonymous and nonsynonymous substitution rates among protein-coding sequences adopt different mutation (substitution) models with sub- tle yet significant differences, which lead to different estimates of evolutionary information. Little attention has been devoted to the comparison of methods for obtaining reliable estimates since the amount of sequence variations within tar- geted datasets is always unpredictable. To our knowledge, there is little informa- tion available in literature about evaluation of these different methods. In this study, we compared six widely used methods and provided with evaluation results using simulated sequences. The results indicate that incorporating sequence fea- tures (such as transition/transversion bias and nucleotide/codon frequency bias) into methods could yield better performance. We recommend that conclusions related to or derived from Ka and Ks analyses should not be readily drawn only according to results from one method. | Zhang Zhang1,2,3 and Jun Yu1,2,4* 1 Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China 2 Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China 3Graduate School, Chinese Academy of Sciences, Beijing 100039, China 4James D. Watson Institute of Genome Sciences, Zhejiang University, Hangzhou 310007, China. | 2006 | Genomics, Proteomics & Bioinformatics2006,4,3: | 7 |
| 18 | Comparative study of the transfection efficiency of commonly used viral vectors in rhesus monkey (Macaca mulatta) brains显示文摘Viral vector transfection systems are among the simplest of biological agents with the ability to transfer genes into the central nervous system.In brain research,a series of powerful and novel gene editing technologies are based on these systems.Although many viral vectors are used in rodents,their full application has been limited in non-human primates.To identify viral vectors that can stably and effectively express exogenous genes within nonhuman primates,eleven commonly used recombinant adeno-associated viral and lentiviral vectors,each carrying a gene to express green or red fluorescence,were injected into the parietal cortex of four rhesus monkeys.The expression of fluorescent cells was used to quantify transfection efficiency.Histological results revealed that recombinant adeno-associated viral vectors,especially the serotype 2/9 coupled with the cytomegalovirus,human synapsin I,or Ca2+/calmodulin-dependentproteinkinaseII promoters,and lentiviral vector coupled with the human ubiquitin C promoter,induced higher expression of fluorescent cells,representing high transfection efficiency.This is the first comparison of transfection efficiencies of different viral vectors carrying different promoters and serotypes in non-human primates(NHPs).These results can be used as an aid to select optimal vectors to transfer exogenous genes into the central nervous system of non-human primates. | Shi-Hao Wu Zhi-Xing Liao Joshua D. Rizak Na Zheng Lin-Heng Zhang Hen Tang Xiao-Bin He Yang Wu Xia-Ping He Mei-Feng Yang Zheng-Hui Li Dong-Dong Qin Xin-Tian Hu | 2017 | Zoological Research2017,38,2: | 7 |
| 19 | Field trial of an HTS filter system on a CDMA base station显示文摘This paper presents the field trial results of a high temperature superconductor filter system (HTSFS) in a code division multiple access (CDMA) mobile communication base station (BTS) in Tangshan, China. The center frequency of the HTSFS is 830 MHz with 1.4% fractional bandwidth. The noise figure (NF) of the HTSFS, including connectors and cables, is 0.8 dB. The field trial results show that after the HTSFS was installed in the receiver front-end of a CDMA base station, the transmitting power of handset was decreased by 3.1 dB on average. Up to now, the HTSFS has been running steadily in the base station for more than 22 months, demonstrating the reliability and stability of the system. | YIN ZheSheng WEI Bin CAO BiSong WANG Xin GUO XuBo ZHANG XiaoPing GAO LongMa PIAO YunLong ZHU MaFeng LIANG Yong WANG Fan H. PIEL B. AMINOV F. AMINOVA M. GETTA S. KOLESOV A. KNACK N. PUPETER D. WEHLER | 2007 | Chinese Science Bulletin2007,52,2: | 7 |
| 20 | Genetic variants in the death receptor 4 gene contribute to susceptibility to bladder cancer显示文摘 | Wang, M. L. Wang, M. M. Cheng, G. Zhang, Z. Z. Fu, G. B. Zhang, Z. D. | 2009 | 南京医科大学学报(自然科学版)2009,29,4: | 6 |