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| 1 | Spatio-temporal analysis of land-use conversion in the eastern coastal China during 1996-2005显示文摘Based on the acquaintance of the regional background of urban-rural transformational development and investigations on the spot,this paper discusses the holistic situation, dominant factors and mechanism of arable land loss and land for construction occupation in the coastal area of China over the last decade,with the aid of GIS technology.Conclusions of the research are summarized as follows:(1)the arable land had been continuously decreasing from 1996 to 2005,with a loss of 1,708,700 hm 2 and an average decrement of 170,900 hm 2 per year;(2)land for construction increased 1,373,700 hm 2 ,with an average increment of 153,200 hm 2 per year;(3)total area of encroachment on arable land for construction between 1996 and 2005 was 1,053,100 hm 2 ,accounting for 34.03%of the arable land loss in the same period,the percentages of which used for industrial land(INL),transportation land(TRL),rural construction land(RUL)and town construction land(TOL)are 45.03%,15.8%,15.47%and 11.5%,respectively;and(4)the fluctuation of the increase of construction land and encroachment on arable land in the area were deeply influenced by the nation's macroscopic land-use policies and development level of regional economy.The growth of population and advancement of technology promoted the rapid industrialization, construction of transportation infrastructures,rural urbanization and expansion of rural settlements in the eastern coastal area,and therefore were the primary driving forces of land-use conversion. | LIU Yansui WANG Lijuan LONG Hualou | 2008 | Journal of Geographical Sciences2008，18，3： | 93 |
| 2 | The process and driving forces of rural hollowing in China under rapid urbanization显示文摘农村凹陷是在中国收到了重要注意的最近的地理现象,它正在经历快速的都市化。它导致了农村陆地资源的浪费使用,并且在陆地使用的优化上强加了障碍并且协调了城市农村的开发。农村凹陷有表明的各种各样的形式,它指农村住所的疏忽和空缺,哪个能导致损坏和农村住所的最终的放弃。损坏住所有破坏的不同的度,从忽视,对中等严重。一般来说的农村凹陷的发展过程有五个阶段,即,出现,生长,繁荣,稳定性,和衰落。基于两地区性的经济发展水平和它的地文学的特征的联合,农村凹陷的类型能作为城市的穗,平凡农业区域,多山的农业区域,和 agro 牧剧区域被分类。特别,平凡农业区域是在农村凹陷的最典型的,它显示出与一个分层的空核心和稳固的形状的作为一个水煮的鸡蛋模式的农村凹陷的空间进化。而且,在农村凹陷后面的驱动力作为城市的拉和农村区域的推被识别。特别地,这份报纸识别贡献者到农村凹陷在与快速的 urbanisation 和经济变化的关系包括农村人口减少,打所有权并且打使用政策,和机构的障碍。 | LIU Yansui LIU Yu CHEN Yangfen LONG Hualou | 2010 | Journal of Geographical Sciences2010，20，6： | 100 |
| 3 | Spatio-temporal characteristics of rural settlements and land use in the Bohai Rim of China显示文摘基于多重遥远察觉到的图象解释和分类,和经济、社会的数据,集中于农村解决的这研究和陆地使用在快速的都市化中变化。农村解决,陆地使用的空间、时间的模式和在 Bohai 边界的影响因素在 5 湩映汵? 汰祡以内被探索吗? | YANG Ren LIU Yansui LONG Hualou QIAO Luyin | 2015 | Journal of Geographical Sciences2015，25，5： | 50 |
| 4 | Multi-UAV reconnaissance task allocation for heterogeneous targets using an opposition-based genetic algorithm with double-chromosome encoding显示文摘This paper presents a novel multiple Unmanned Aerial Vehicles(UAVs) reconnaissance task allocation model for heterogeneous targets and an effective genetic algorithm to optimize UAVs' task sequence. Heterogeneous targets are classified into point targets, line targets and area targets according to features of target geometry and sensor's field of view. Each UAV is regarded as a Dubins vehicle to consider the kinematic constraints. And the objective of task allocation is to minimize the task execution time and UAVs' total consumptions. Then, multi-UAV reconnaissance task allocation is formulated as an extended Multiple Dubins Travelling Salesmen Problem(MDTSP), where visit paths to the heterogeneous targets must meet specific constraints due to the targets' feature. As a complex combinatorial optimization problem, the dimensions of MDTSP are further increased due to the heterogeneity of targets. To efficiently solve this computationally expensive problem, the Opposition-based Genetic Algorithm using Double-chromosomes Encoding and Multiple Mutation Operators(OGA-DEMMO) is developed to improve the population variety for enhancing the global exploration capability. The simulation results demonstrate that OGADEMMO outperforms the ordinary genetic algorithm, ant colony optimization and random search in terms of optimality of the allocation results, especially for large scale reconnaissance task allocation problems. | Zhu WANG Li LIU Teng LONG Yonglu WENa | 2018 | Chinese Journal of Aeronautics2018，31，2： | 35 |
| 5 | Using Remote Sensing and GIS Technologies to Estimate Grass Yield and Livestock Carrying Capacity of Alpine Grasslands in Golog Prefecture,China显示文摘Remote sensing data from the Terra Moderate-Resolution Imaging Spectroradiometer (MODIS) and geospatial data were used to estimate grass yield and livestock carrying capacity in the Tibetan Autonomous Prefecture of Golog, Qing-hai, China. The MODIS-derived normalized difference vegetation index (MODIS-NDVI) data were correlated with the aboveground green biomass (AGGB) data from the aboveground harvest method. Regional regression model between the MODIS-NDVI and the common logarithm (LOG10) of the AGGB was significant (r2 = 0.51, P < 0.001), it was, there-fore, used to calculate the maximum carrying capacity in sheep-unit year per hectare. The maximum livestock carrying capacity was then adjusted to the theoretical livestock carrying capacity by the reduction factors (slope, distance to water, and soil erosion). Results indicated that the grassland conditions became worse, with lower aboveground palatable grass yield, plant height, and cover compared with the results obtained in 1981. At the same time, although the actual livestock numbers decreased, they still exceeded the proper theoretical livestock carrying capacity, and overgrazing rates ranged from 27.27% in Darlag County to 293.99% in Baima County. Integrating remote sensing and geographical information system technologies, the spatial and temporal conditions of the alpine grassland, trend, and projected stocking rates could be forecasted for decision making. | YU Long ZHOU Li LIU Wei ZHOU Hua-Kun | 2010 | Pedosphere2010，20，3： | 32 |
| 6 | SQUAMOSA Promoter-Binding Protein-Like Transcription Factors:Star Players for Plant Growth and Development显示文摘SQUAMOSA Promoter-Binding Protein-Like (SPL) genes encode plantspecific transcription factors that play important roles in plant phase transition,flower and fruit development,plant architecture,gibberellins signaling,sporogenesis,and response to copper and fungal toxins.In Arabidopsis,many SPL genes are post-transcriptionally regulated by the microRNA (miRNA) miR156,among which AtSPL9 in turn positively regulates the expression of the second miRNA miR172.This miR156AtSPL9-miR172 regulatory pathway plays critical roles during juvenile to adult leaf development and the miR156-SPLs feedback interaction persists all through the plant development,which may be conserved in other plants.In the present paper,we provide a concise review on the most recent progress in the regulatory mechanisms associated with plant SPL transcription factors,especially in relation to miRNAs.The potential application of these discoveries in agriculture is briefly discussed. | Xiaobo Chen Zenglin Zhang Danmei Liu Kai Zhang Aili Li Long Mao | 2010 | Journal of Integrative Plant Biology2010，52，11： | 31 |
| 7 | 新加坡最大回用水处理厂污水短程硝化厌氧氨氧化脱氮工艺显示文摘总结了新加坡樟宜回用水处理厂4次采样的结果,该厂日处理城市污水80万t.在好氧区很好地实现了部分硝化和亚硝酸盐积累,其中好氧氨氧化率平均为72.2%,亚硝酸盐积累率平均为76.0%.在缺氧区氨氮和亚硝酸盐得到了同步去除(厌氧氨氧化).物料衡算结果表明:初沉池的出水总氮的37.5%是通过自养脱氮去除,27.1%是通过传统的硝化/反硝化脱氮去除,其余部分总氮则存在于活性污泥和出水中.微生物和动力学研究表明:短悬浮或游离的厌氧氨氧化菌可存在于污泥龄较短的污水处理系统.最后从出水氮质量浓度、pH、碱度、曝气能耗及反应器容积等方面,将樟宜回用水处理厂的分段进水活性污泥法工艺与新加坡其他3个回用水处理厂的MEL/LE工艺进行了对比分析. | Cao Yeshi Kwok Bee Hong Yan Zhou Yu Liu He Jianzhong Chua Seng Chye Wah Yuen Long Yahya Ghani | 2015 | 北京工业大学学报2015，41，10： | 32 |
| 8 | A Survey: Several Technologies of Non-Orthogonal Transmission for 5G显示文摘One key advantage of 4G OFDM system is the relatively simple receiver implementation due to the orthogonal resource allocation.However,from sum-capacity and spectral efficiency points of view,orthogonal systems are never the achieving schemes.With the rapid development of mobile communication systems,a novel concept of non-orthogonal transmission for 5G mobile communications has attracted researches all around the world.In this trend,many new multiple access schemes and waveform modulation technologies were proposed.In this paper,some promising ones of them were discussed which include Non-orthogonal Multiple Access(NOMA),Sparse Code Multiple Access(SCMA),Multi-user Shared Access(MUSA),Pattern Division Multiple Access(PDMA)and some main new waveforms including Filter-bank based Multicarrier(FBMC),Universal Filtered Multi-Carrier(UFMC),Generalized Frequency Division Multiplexing(GFDM).By analyzing and comparing features of these technologies,a research direction of guiding on future 5G multiple access and waveform are given. | TAO Yunzheng LIU Long LIU Shang ZHANG Zhi | 2015 | China Communications2015，12，10： | 31 |
| 9 | Recent advances in friction and lubrication of graphene and other 2D materials:Mechanisms and applications显示文摘Two-dimensional materials having a layered structure comprise a monolayer or multilayers of atomic thickness and ultra-low shear strength.Their high specific surface area,in-plane strength,weak layer-layer interaction,and surface chemical stability result in remarkably low friction and wear-resisting properties.Thus,2D materials have attracted considerable attention.In recent years,great advances have been made in the scientific research and industrial applications of anti-friction,anti-wear,and lubrication of 2D materials.In this article,the basic nanoscale friction mechanisms of 2D materials including interfacial friction and surface friction mechanisms are summarized.This paper also includes a review of reports on lubrication mechanisms based on the film-formation,self-healing,and ball bearing mechanisms and applications based on lubricant additives,nanoscale lubricating films,and space lubrication materials of 2D materials in detail.Finally,the challenges and potential applications of 2D materials in the field of lubrication were also presented. | Lincong LIU Ming ZHOU Long JIN Liangchuan LI Youtang MO Guoshi SU Xiao LI Hongwei ZHU Yu TIAN | 2019 | Friction2019，7，3： | 29 |
| 10 | Dual gRNAs guided CRISPR/Cas9 system inhibits hepatitis B virus replication显示文摘AIM: To screen and investigate the effective g RNAs against hepatitis B virus(HBV) of genotypes A-D.METHODS: A total of 15 g RNAs against HBV of genotypes A-D were designed. Eleven combinations of two above g RNAs(dual-g RNAs) covering the regulatory region of HBV were chosen. The efficiency of each g RNA and 11 dual-g RNAs on the suppression of HBV(genotypes A-D) replication was examined by the measurement of HBV surface antigen(HBs Ag) or e antigen(HBe Ag) in the culture supernatant. The destruction of HBV-expressing vector was examined in Hu H7 cells co-transfected with dual-g RNAs and HBVexpressing vector using polymerase chain reaction(PCR) and sequencing method, and the destruction of ccc DNAwas examined in Hep AD38 cells using KCl precipitation, plasmid-safe ATP-dependent DNase(PSAD) digestion, rolling circle amplification and quantitative PCR combined method. The cytotoxicity of these g RNAs was assessed by a mitochondrial tetrazolium assay.RESULTS: All of g RNAs could significantly reduce HBs Ag or HBe Ag production in the culture supernatant, which was dependent on the region in which g RNA against. All of dual g RNAs could efficiently suppress HBs Ag and/or HBe Ag production for HBV of genotypes A-D, and the efficacy of dual g RNAs in suppressing HBs Ag and/or HBe Ag production was significantly increased when compared to the single g RNA used alone. Furthermore, by PCR direct sequencing we confirmed that these dual g RNAs could specifically destroy HBV expressing template by removing the fragment between the cleavage sites of the two used g RNAs. Most importantly, g RNA-5 and g RNA-12 combination not only could efficiently suppressing HBs Ag and/or HBe Ag production, but also destroy the ccc DNA reservoirs in Hep AD38 cells.CONCLUSION: These results suggested that CRISPR/Cas9 system could efficiently destroy HBV expressing templates(genotypes A-D) without apparent cytotoxicity. It may be a potential approach for eradication of persistent HBV ccc DNA in chronic HBV infection patients. | Jie Wang Zhong-Wei Xu Shuang Liu Rui-Yang Zhang Shan-Long Ding Xiao-Meng Xie Lu Long Xiang-Mei Chen Hui Zhuang Feng-Min Lu | 2015 | World Journal of Gastroenterology2015，21，32： | 29 |
| 11 | Decreased regional homogeneity in major depression as revealed by resting-state functional magnetic resonance imaging显示文摘Backgroud 功能的成像研究在任务或休息状态期间在消沉在 cortico 边的网络显示反常活动。现在的工作是探索休息状态在消沉与地区性的同质(ReHo ) 显示出的反常自发的活动功能的用 fMRI 的磁性的回声成像(fMRI ).Methods,地区性的大脑活动的差别在在沮丧对健康的参加者放松状态被测量。第一与主要压抑的混乱和 16 控制诊断的十六个参加者在放松状态期间被扫描。一个新奇方法基于 ReHo 被用来在左丘脑越过整个 brain.Results ReHo 检测自发的血液动力学的回答,左时间的脑叶,左小脑的以后的脑叶,并且双边的枕骨的脑叶被发现显著地在放松 depression.Conclusions 的状态与健康控制相比在消沉被减少反常自发的活动在左丘脑,左时间的脑叶,左小脑的以后的脑叶,和双边的枕骨的脑叶存在。并且 ReHo 可以是在在放松消沉的状态理解不同大脑活动的一本潜在的参考书。 | PENG Dai-hui JIANG Kai-da FANG Yi-ru XU Yi-feng SHEN Ting LONG Xiang-yu LIU Jun ZANG Yu-feng | 2011 | Chinese Medical Journal2011，，3： | 28 |
| 12 | Nomogram to predict overall survival after gallbladder cancer resection in China显示文摘AIM To integrate clinically significant variables related to prognosis after curative resection for gallbladder carcinoma(GBC) into a predictive nomogram.METHODS One hundred and forty-two GBC patients who underwent curative intent surgical resection at Peking Union Medical College Hospital(PUMCH) were included. This retrospective case study was conducted at PUMCH of the Chinese Academy of Medical Sciences and Peking Union Medical College(CAMS & PUMC) in China from January 1, 2003 to January 1, 2018. The continuous variable carbohydrate antigen 19-9(CA19-9) was converted into a categorical variable(cCA19-9) based on the normal reference range. Stages 0 to IIIA were merged into one category, while the remaining stages were grouped into another category. Pathological grade X(GX) was treated as a missing value. A multivariate Cox proportional hazards model was used to select variables to construct a nomogram. Discrimination and calibration of the nomogram were performed via the concordance index(C-index) and calibration plots. The performance of the nomogram was estimated using the calibration curve. Receiver operating characteristic(ROC) curve analysis and decision curve analysis(DCA) were performed to evaluate the predictive accuracy and net benefit of the nomogram, respectively.RESULTS Of these 142 GBC patients, 55(38.7%) were male, and the median and mean age were 64 and 63.9 years, respectively. Forty-eight(33.8%) patients in this cohort were censored in the survival analysis. The median survival time was 20 months. A series of methods, including the likelihood ratio test and Akaike information criterion(AIC) as well as stepwise, forward, and backward analyses, were used to select the model, and all yielded identical results. Jaundice [hazard ratio(HR) = 2.9; 95% confidence interval(CI): 1.60-5.27], cCA19-9(HR = 3.2; 95%CI: 1.91-5.39), stage(HR = 1.89; 95%CI: 1.16-3.09), and resection(R)(HR = 2.82; 95%CI: 1.54-5.16) were selected as significant predictors and combined into a survival time predictive nomogram(C-index = 0.803; 95%CI: 0.766-0.839). High prediction accuracy(adjusted C-index = 0.797) was further verified via bootstrap validation. The calibration plot demonstrated good performance of the nomogram. ROC curve analysis revealed a high sensitivity and specificity. A high net benefit was proven by DCA.CONCLUSION A nomogram has been constructed to predict the overall survival of GBC patients who underwent radical surgery from a clinical database of GBC at PUMCH. | Yi Bai Zhi-Song Liu Jian-Ping Xiong Wei-Yu Xu Jian-Zhen Lin Jun-Yu Long Fei Miao Han-Chun Huang Xue-Shuai Wan Hai-Tao Zhao | 2018 | World Journal of Gastroenterology2018，24，45： | 25 |
| 13 | Features of Sandy Debris Flows of the Yanchang Formation in the Ordos Basin and Its Oil and Gas Exploration Significance显示文摘Sandy debris flow is a new genetic type of sand bodies,which has gained much attention in recent years and its corresponding theory is proved to be a significant improvement and even partial denial to the 'Bouma Sequence' and 'turbidite fan' deep-water sedimentary theories to some point. Oil exploration researchers are highly concerned with sandy debris flows for its key role in controlling oil and gas accumulation processes.In this article,by applying sandy debris flows theory and combining a lot work o... | LI Xiangbo CHEN Qilin LIU Huaqing WAN Yanrong WEI Lihua LIAO Jianbo LONG Liwen | 2011 | Acta Geologica Sinica(English Edition)2011，85，5： | 24 |
| 14 | Application of LICOM to the numerical study of the water exchange between the South China Sea and its adjacent oceans显示文摘On the basis of 900-year integration of a global ocean circulation model—LICOM driven by ECMWF reanalysis wind data with uni-form 0.5°-grids, a quantitative estimate of the annual and monthly mean water exchange of the South China Sea (SCS) with its adjacentoceans through 5 straits is obtained. Among them, the annual transport is the largest in the Luzon Strait, then in the Taiwan Strait, andthen in the Sunda Shelf, in the Balabac Strait and in the Mindoro Strait in turn, the largest monthly transport variation appears in theLuzon Strait and Sunda shelf. It is shown that the mass transport through the Taiwan Strait is affected by monsoon, while the transportthrough the Luzon Strait may be associated with the bifurcation position of the North Equatorial Current off the east Philippines shore;the transports in the Luzon Strait and Sunda Shelf are out of phase in direction but well correlated in magnitude. The annual andmonthly mean heat and salinity exchange of the SCS through the straits are also calculated and shown to be in phase with the masstransport. The Kuroshio water carries about 0.43 PW heat transport and 151.33 kt/s salinity transport into the SCS, while most of themis carried out of the SCS through the Taiwan Strait and Sunda Shelf annually. The further model integration based on the 900-year inte-gration for another 44 a from 1958 to 2001 driven by real wind data (ERA40 data) shows that the monthly mean mass transport viathese straits varies annually with a large variation range, which may be associated with the seasonal and interannual variations in thecurrent field and sea surface height in the SCS. The mean mass transport through the Taiwan Strait, Luzon Strait, Mindoro Strait, Bal-abac Strait and Sunda Shelf is 2.012 × 106, -4.063 × 106, -0.124 × 106, -0.083 × 106 and 2.258 × 106 m3/s, respectively. | CAI Shuqun LIU Hailong LI Wei LONG Xiaomin | 2005 | Acta Oceanologica Sinica2005，24，4： | 24 |
| 15 | Interleukin-33 drives hepatic fibrosis through activation of hepatic stellate cells显示文摘Liver fibrosis is a consequence of chronic liver disease,causing morbidity and mortality.Interleukin-33(IL-33)is a critical mediator of inflammation,which may be involved in the development of liver fibrosis.Here,we investigated the role of IL-33 in human patients and experimental bile-duct ligation(BDL)-induced fibrosis in mice.We report increased hepatic IL-33 expression in the murine BDL model of fibrosis and in surgical samples obtained from patients with liver fibrosis.Liver injury,inflammatory cell infiltration and fibrosis were reduced in the absence of the IL-33/ST2 receptor,and the activation of hepatic stellate cells(HSCs)was decreased in ST2-deficient mice.Recombinant IL-33 activated HSCs isolated from C57BL/6 mice,leading to the expression of IL-6,TGF-β,α-SMA and collagen,which was abrogated in the absence of ST2 or by pharmacological inhibition of MAPK signaling.Finally,administration of recombinant IL-33 significantly increased hepatic inflammation in sham-operated BL6 mice but did not enhance BDL-induced hepatic inflammation and fibrosis.In conclusion,BDL-induced liver inflammation and fibrosis are dependent on ST2 signaling in HSCs,and therefore,the IL-33/ST2 pathway may be a potential therapeutic target in human patients with chronic hepatitis and liver fibrosis. | Zhongming Tan Qianghui Liu Runqiu Jiang Long Lv Siamak S Shoto Isabelle Maillet Valerie Quesniaux Junwei Tang Wenjie Zhang Beicheng Sun Bernhard Ryffel | 2018 | Cellular & Molecular Immunology2018，15，4： | 24 |
| 16 | Effects of icariin on erectile function and expression of nitric oxide synthase isoforms in castrated rats显示文摘瞄准:在可勃起的功能和氮的氧化物 synthase (NOS ) 的表达式上调查 icariin 的效果在阉割的老鼠的 isoforms。方法:32 只成年男 Wistar 老鼠随机被划分成一假冒操作组(A) ,三阉割了组(B, C 和 D ) 。在外科以后的一个星期,老鼠与生理盐水(组 A 和 B ) 或口头的 icariin 被对待(1 mg/[kg.day ] 为组 C 和 5 mg/[kg.day ] 为组 D ) 为 4 个星期。一星期术后疗法,老鼠的可勃起的功能被在 cavernosal 神经的电镀物品刺激期间测量 intracavernosal 压力(ICP ) 估计。浆液睾丸激素(圣)层次,在小梁的织物的平滑肌( PSM )的百分比,和 mRNA 的表示和神经元的氮的氧化物 synthase ( nNOS )的蛋白质,可诱导的氮的氧化物 synthase ( i NOS ),内皮的氮的氧化物 synthase ( eNOS )和在阴茎海绵体( CC )的磷酸二酯酶 V ( PDE5 )也被评估。结果:ICP, PSM,圣和 nNOS, i NOS, eNOS 和 PDE5 的表示显著地在组 A (P 0.01 ) 与那些相比在组 B 被减少。然而, ICP, PSM 和 nNOS 和 i NOS 的表示在组 B (P 0.05 ) 与那些相比在组 C 和 D 被增加。在圣和 eNOS 和 PDE5 的表示的变化不是重要的(P 0.05 ) 在组 C 和 D 与那些相比在组 B。结论:有为 4 个星期的 icariin (98.6 % 纯净) 的口头的处理潜在地改进可勃起的功能。这效果随阉割的老鼠的 CC 的 PSM 和某些 NOS 的表示的增加被相关。这些结果建议 icariin 可以在可勃起的机能障碍上有治疗学的效果。 | Wu-Jiang Liu Zhong-Cheng Xin Hua Xin Yi-Ming Yuan Long Tian Ying-Lu Guo | 2005 | Asian Journal of Andrology2005，7，4： | 22 |
| 17 | The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis显示文摘 | Huang Norden E. Shen Zheng Long Steven R. Wu Manli C. Shih Hsing H. Zheng Quanan Yen Nai-Chyuan Tung Chi Chao Liu Henry H | 1998 | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences . 1998 (1971)1998，，1971： | 22 |
| 18 | Research on the slope spectrum of the Loess Plateau显示文摘A new concept dealing with digital analysis of loess terrain,slope spectrum,is presented and discussed in this paper,by introducing its characteristic,represen-tation and extracting method from DEMs. Using 48 geomorphological units in dif-ferent parts of the loess as test areas and 5 m-resolution DEMs as original test data,the quantitative depiction and spatial distribution of slope spectrum in China's Loess Plateau have been studied on the basis of a series of carefully-designed experiments. In addition,initial experiment indicates a strong relationship between the slope spectrum and the loess landform types,displaying a potential importance of the slope spectrum in geomorphological studies. Based on the slope spectrums derived from the 25 m-resolution DEM data in whole loess terrain in northern part of Shaanxi,13 slope spectrum indices were extracted and integrated into a compre-hensive layer with image integration method. Based on that,a series of unsuper-vised classifications was applied in order to make a landform classification in northern Shaanxi Loess Plateau. Experimental results show that the slope spec-trum analysis is an effective method in revealing the macro landform features. A continuous change of slope spectrum from south to north in northern Shaanxi Loess Plateau shows an obvious spatial distribution of different loess landforms. This also proves the great significance of the slope spectrum method in describing the terrain roughness and landform evolution as well as a further understanding on landform genesis and spatial distribution rule of different landforms in the Loess Plateau. | TANG GuoAn,LI FaYuan,LIU XueJun,LONG Yi & YANG Xin Key Laboratory of Virtual Geographic Environment,Nanjing Normal University,Ministry of Education,Nanjing 210046,China | 2008 | Science China(Technological Sciences)2008，51，S1： | 22 |
| 19 | Relationship between expression of α-fetoprotein messenger RNA and some clinical parameters of human hepatocelular carcinoma显示文摘METHODWedetectedtheexpressionofAFPinmRNAlevelintissuesamplesfrom52patientssuferingfromHCCbyRTPCRmethod.RESULTSThepositiverat... | HE Ping, TANG Zhao You, YE Sheng Long and LIU Bin Bin | 1999 | World Journal of Gastroenterology1999，5，2： | 23 |
| 20 | Genome Editing and Double-Fluorescence Proteins Enable Robust Maternal Haploid Induction and Identification in Maize显示文摘 | Le Dong Lina Li Changlin Liu Chenxu Liu Shuaifeng Geng Xinhai Li Changling Huang Long Mao Shaojiang Chen Chuanxiao Xie | 2018 | Molecular Plant2018，11，9： | 22 |
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