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| 1 | Genetic diversity revealed by genomic-SSR and EST-SSR markers among common wheat, spelt and compactum显示文摘In this study, two SSR molecular markers, named genomic-SSR and EST-SSR, are used to measure the genetic diversity among three hexaploid wheat populations, which include 28 common wheat (Triticum aestivum L.), 13 spelt (Triticum spelta L.), and 11 compactum (Triticum compactum Host.). The results show that common wheat has the highest genetic polymorphism, followed by spelt and then compactum. The mean genetic distance between the populations is higher than that within a population, and similar tendency is detected for individual genomes A, B and D. Therefore, spelt and compactum can be used as potential germplasms for wheat breeding, especially for enriching the genetic variation in genome D. As compared with spelt, the genetic diversity between common wheat and compactum is much smaller, indicating a closer consanguine relationship between these two species. Although the polymorphism revealed by EST-SSR is lower than that by genomic-SSR, it can effectively differentiate diverse genotypes as well. Together with our present results, it is concluded that EST-SSR marker is an ideal marker for assessing the genetic diversity in wheat. Meanwhile, the origin and evolution of hexaploid wheat is also analyzed and discussed. | YANGXinquan LIUPeng HANZongfu NIZhongfu SUNQixin | 2005 | Progress in Natural Science:Materials International2005，15，1： | 6 |
| 2 | Effects of Plant Density on Forage Nutritive Value of Whole Plant Corn显示文摘In the field experiment, the effects of plant densities (75 000, 112 500 and 150 000 plants ha-1) on forage nutritive value of whole plant corn (WPC) were studied from 1999 to 2001. The results demonstrated that with the increasing of plant density, the forage matter yield per plant corn decreased significantly, while the fresh matter and dry matter per hectare corn increased significantly, and a higher grains yield was gotten at higher plant densities. Forage nutritive quality of whole plant corn was changed as plant density increased, the crude protein (CP), ether extract (EE), crude fiber (CF), nitrogen free extract (NFE) and general energy (GE) yields increased obviously. Increas- ing plant density reasonably with the application of plant growth regulators could improve plant properties, harvest more forage matter, and enhance forage nutritive value of WPC. | ZHANGJi-wang HUChang-hao WANGKong-jun DONGShu-ting LIUPeng | 2004 | Agricultural Sciences in China2004，3，11： | 4 |
| 3 | Migration Laws of Floating Population in Mianyang显示文摘Based on the overall analysis of the floating population among big and medium-sized cities in China,this paper, by means of statistics and questionnaires, makes a systematical study on the migratory features of the floating population in Mianyang, its employment structure, migrating causes and channels. According to the findings, the author finds a fact that with the strategy of Western Development, and with the construction of science and technology city of Mianyang, the migrating in Mianyang conforms to the general patterns of the migration, which has happened in those big and medium-sized cities in China.In addition,the city has a new but unique feature — economic factor, as the driving force of population migration, is quite distinct from that of those citiesin eastern areas of China. | LiuPeng | 2005 | Ecological Economy2005，1，1： | 1 |
| 4 | Inhalation of nitric oxide in the treatment of SARS in Beijing显示文摘BACKGROUND: Patients with severe acute respiratory syndrome (SARS) frequently suffer from hypoxemia despite supplemental oxygen and mechanical ventilator support. Inhalation of nitric oxide (INO) could improve oxygenation in intubated ARDS patients.However, whether INO has similar effect in the | CHENLu-Ni LIUPeng GAOHe SUNBing CHAODe-Sheng WANGFei ZHUYuan-Jue GoranHEDENSTIERNA ChenGWANG | 2003 | Acta Pharmacologica Sinica2003，24，12： | 1 |
| 5 | Researchprogressonthephysiologicalresponseofrapeseedunderlowboronstress[J]显示文摘 | LIUPeng(刘鹏) YANGYuai(杨玉爱) | | 中国油料作物学报0，，： | 1 |
| 6 | Identification of Suitable Hydrologic Response Unit Thresholds for Soil and Water Assessment Tool Streamflow Modelling显示文摘Use of a non-zero hydrologic response unit(HRU) threshold is an effective way of reducing unmanageable HRU numbers and simplifying computational cost in the Soil and Water Assessment Tool(SWAT) hydrologic modelling. However, being less representative of watershed heterogeneity and increasing the level of model output uncertainty are inevitable when minor HRU combinations are disproportionately eliminated. This study examined 20 scenarios by running the model with various HRU threshold settings to understand the mechanism of HRU threshold effects on watershed representation as well as streamflow predictions and identify the appropriate HRU thresholds. Findings show that HRU numbers decrease sharply with increasing HRU thresholds. Among different HRU threshold scenarios, the composition of land-use, soil, and slope all contribute to notable variations which are directly related to the model input parameters and consequently affect the streamflow predictions. Results indicate that saturated hydraulic conductivity, average slope of the HRU, and curve number are the three key factors affecting stream discharge when changing the HRU thresholds. It is also found that HRU thresholds have little effect on monthly model performance, while evaluation statistics for daily discharges are more sensitive than monthly results. For daily streamflow predictions, thresholds of 5%/5%/5%(land-use/soil/slope) are the optimum HRU threshold level for the watershed to allow full consideration of model accuracy and efficiency in the present work. Besides, the results provide strategies for selecting appropriate HRU thresholds based on the modelling goal. | JIANG Liupeng ZHU Jinghai CHEN Wei HU Yuanman YAO Jing YU Shuai JIA Guangliang HE Xingyuan WANG Anzhi | 2021 | Chinese Geographical Science2021，31，4： | 1 |
| 7 | 显示文摘 | HEJuan(何娟) CHANGJun-biao(常俊标) GUORui-yun(郭瑞云) LIUPeng(刘澎) LINSu-feng(林素风) CHENRong-feng(陈荣峰) WANGQiang(王强) | | 色谱0，，： | 1 |
| 8 | Commercialization of quasi-public service-The disputes on drug evaluation financing system in FDA[J]显示文摘 | LIUPeng | 2007 | 中国处方药2007，，6： | 1 |
| 9 | Synthesisandapplicationofanaminophosphonic-carboxylicacidchelatingresinforpreconcentrationofrare-earthelements[J]显示文摘 | PUQiaosheng(蒲巧生) LIUPeng(刘鹏) WUXiongzhi(吴雄志) etal | | 兰州大学学报:自然科学版0，，： | 1 |
| 10 | A Methodology for Platform Based High—Level System—on—Chip Verification显示文摘The time-to-market challenge has increased the need for shortening the co-verification time in system-on-chip development.In this article,a new methodology of high-level hardware/software coverification is introduced.With the help of the real-time operating system,the application program can easily be migrated from the software simulator to the hardware emulation board.The hierarchical architecture can be used to separate application program from the implementation of the platform during the veriflaction process.The highlevel verification platform is successfully used in developing the HDTV decoding chip. | GAOFeng LIUPeng YAOQingdong | 2003 | Chinese Journal of Electronics2003，12，1： | 1 |
| 11 | RAID-M:A high performance RAID Matrix mass storage显示文摘In the light of the increasingly serious I/O bottleneck problem, the paper puts forward a method named RAID-M (RAID Matrix) to build high performance mass storage from cheap PC components based on the idea of multi-channel I/O and parallel access. Theoretical analyses prove that different RAID-M configurations vary their performance, space utilization and reliability, meeting various application goals. Experiments show that both the sequential read performance and sequential write performance of a RAID-M prototype machine have broken through the limitation of 32 bit/33 MHz PCI bus. | LIUPeng LISanli FrancisC.M.Lau SHIYao HUANGFeng | 2005 | Science in China(Series F)2005，48，4： | 1 |
| 12 | Relation Between Buffer Size and RISC Core Performance显示文摘In high definition television (HDTV)source decoder system, all data and instructions processed by function models are inputted and outputted via bus which is controlled by bus arbitration unit (BAU). Effi-cient bus architecture plays an important role in optimiz-ing system performance. This paper proposes two models to evaluate how buffer size and priority scheme in BAU can affect HDTV decoder system performance. Store proba-bility and buffer size (SP-BS) model splits time of write into two parts which is determined by write buffer size and priority scheme respectively, and obtains the quantita-tive relation between system performance and write buffer size for different priority scheme. Capability performance formula (CPF) model is used to investigate the influence of read buffer size on system performance that is in di-rect proportion to the number of read request arriving at BAU. According to the models, optimal buffer size with the highest performance/cost ratio for be nchmarks can beobtained. | ZHOULi YAOQingdong LIUPeng LIDongxiao | 2003 | Chinese Journal of Electronics2003，12，3： | 0 |
| 13 | A magnetically adsorbed fine adjustment mechanism of the second crystal in a double-crystal monochromator显示文摘In a fine adjustment mechanism of the second crystal in a double-crystal monochromator, a compression spring is usually used as a return force element, but it often produces permanent deform after some time. A novel fine adjust- ment mechanism is put forward, which utilizes permanent-magnet as the return force element instead of a compres- sion spring. Its principle and advantages of adjusting the pitch angle and the roll angle are analyzed, and the structure parameters of the permanent-magnet, which is the key part of the fine adjustment mechanism, are optimized. The magnetically adsorbed fine adjustment mechanism has been testified and applied successfully in the double-crystal monochromator of 4W1B beam line in Beijing Synchrotron Radiation Facility (BSRF). | CAOChong-Zhen GAOXue-Guan MAPei-Sun WANGFeng-Qin HEDong-Qing HUANGYu-Ying LIUPeng | 2005 | Nuclear Science and Techniques2005，16，2： | 0 |
| 14 | Treatment of Dirac Fields in Light—Front Coordinates by Dirac‘s Method for Constrained Hamiltonian Systems显示文摘Dirac's method which itself is for constrained Boson fields and particle systems is followed and developed to treat Dirac fields in light-front coordinates. | YANGZe-Sen LIUPeng 等 | 2002 | Communications in Theoretical Physics2002，37，1： | 0 |
| 15 | TWO DIMENSIONAL SUPERSONIC SHOCK TUNNEL AND ITS APPLICATION显示文摘A brief description is given of the design and performance of twodimensional supersonic shock tunnels.The experimental results of three dimensionalinteraction between shock wave and turbulent boundary layer induced by low protuber-ance are presented.Curre | WangShifen Wangyu TangGuiming LiZhenhua Liupeng(Institute of Mechanics,Chinese Academy of Sciences,)Beijing, China, 100080 | 1995 | Chinese Journal of Aeronautics1995，8，2： | 0 |
| 16 | A review on evaluation of crack resistance of asphalt mixture by semi-circular bending test显示文摘Although there are many kinds of fracture tests to choose from in evaluating the crack resistance of asphalt mixture,the semi-circular bending(SCB)test has attracted a lot of attention in the academic road engineering community because of its simplicity,stability,and flexibility in testing and evaluation.The SCB test has become a common method to study the cracking resistance of asphalt mixture in recent years.This paper mainly summarizes the overview of the SCB test,summarizes some research results and common characterization parameters of the SCB test method in monotone test and fatigue test in recent years,and predicts and suggests the research direction of the SCB test in the future.It is found that the research on the monotonic SCB test is more comprehensive,and the research on the SCB fatigue test needs to be further improved in the aspects of loading mode,characterization parameter selection,and so on.Researchers can flexibly adjust the geometric dimensions and the test parameters of semi-cylindrical specimens,and conduct comprehensive analysis combined with the results of numerical simulation.The crack resistance of asphalt mixture can be comprehensively evaluated by fracture energy,fracture toughness,stiffness,flexibility index and other fracture indicators,combined with the crack propagation of the specimen.The analysis of numerical simulation can confirm the test results.In order to standardize the setting of fatigue parameters for future application,it is necessary to standardize the setting of bending performance. | Yongjun Meng Weikang Kong Chaoliang Gou Shenwen Deng Yirong Hu Jing Chen Liupeng Fan | 2023 | Journal of Road Engineering2023，3，1： | 0 |
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