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| 1 | Mapping wetland changes in China between 1978 and 2008显示文摘Four wetland maps for all China have been produced,based on Landsat and CBERS-02B remote sensing data between 1978 and 2008 (1978,1990,2000 and 2008).These maps were mainly developed by manual interpretation and validated by substantial field investigation in 2009.Based on these maps,we analyzed the 2008 wetland distribution in China and discussed wetland changes and their drivers over the past 30 years.(i) There were about 324097 km 2 of wetlands in 2008,for which inland marshes or swamps were the most common wetland type (35%),with lakes (26%) second.Most of the wetlands were in Heilongjiang,Inner Mongolia,Qinghai and Tibet,occupying about 55% of the national wetland area.(ii) From 1978 to 2008,China's wetland area continually and significantly decreased,by about 33% based on changes in the wetland map.This was in sharp contrast to the increase in artificial wetlands,which increased by about 122%.Inland marshes accounted for the main loss of total wetlands from 1978 to 2000.From 2000 through 2008,riverine and lacustrine wetlands constituted the main wetland loss.Fortunately however,the rate of wetland loss decreased from 5523 to 831 km 2 /a.(iii) The change ratio of lost natural wetlands (including inland and coastal wetlands) to non-wetlands has decreased slightly over the past 30 years.From 1978 to 1990,nearly all natural wetlands (98%) lost were transformed into non-wetlands.However,the ratio declined to 86% from 1990 to 2000,and to 77% from 2000 to 2008.(iv) All Chinese provinces were divided into three groups according to patterns of wetland changes,which could relate to the driving forces of such changes.Tibet was completely different from other provinces,as it was one representative example in which there was a net wetland increase,because of global warming and decreased human activity since 1990.Increased economic development caused considerable wetland loss in most eastern provinces,and artificial wetlands increased. | NIU ZhenGuo ZHANG HaiYing WANG XianWei YAO WenBo ZHOU DeMin ZHAO KuiYi ZHAO Hui LI NaNa HUANG HuaBing LI CongCong YANG Jun LIU CaiXia LIU Shuang WANG Lin LI Zhan YANG ZhenZhong QIAO Fei ZHENG YaoMin CHEN YanLei SHENG YongWei GAO XiaoHong ZHU WeiHong WANG WenQing WANG Hong WENG YongLing ZHUANG DaFang LIU JiYuan LUO ZhiCai CHENG Xiao GUO ZiQi GONG Peng | 2012 | Chinese Science Bulletin2012,57,22: | 51 |
| 2 | Genome-scale detection of hypermethylated CpG islands in circulating cell-free DNA of hepatocellular carcinoma patients显示文摘 | Lu Wen Jingyi Li Huahu Guo Xiaomeng Liu Shengmin Zheng Dafang Zhang Weihua Zhu Jianhui Qu Limin Guo Dexiao Du Xiao Jin Yuhao Zhang Yun Gao Jie Shen Hao Ge Fuchou Tang Yanyi Huang Jirun Peng | 2015 | Cell Research2015,25,11: | 19 |
| 3 | Assessment of the relative role of climate change and human activities in desertification:显示文摘Climate change and human activities are the two kinds of driving forces in desertification,and assessing their relative role in desertification is of great significance to deeply understanding the driving mechanisms and preventing desertification expansion.This paper has systematically reviewed the progress of the researches on assessing the relative role of climate change and human activities in desertification from qualitative,semi-quantitative and quantitative aspects respectively.The authors found that there were still some problems in the previous researches.For example,the subjectivity in assessment was obvious,the assessment cannot be easily repeated,and the assessment and its results were always based on administrative regions and less taken and expressed in a continuous space.According to the progress of previous researches and the works conducted by the authors recently,we put forward a quantitative approach by selecting NPP as a common indicator to measure the relative role of climate change and human activities in desertification and dividing the ecological process of 'driving force effect-dynamic response of desertified land' into several scenarios.Meanwhile,validation and scale of assessment should be taken into account when quantitative assessment of the relative role of climate change and human activities in desertification are carried out. | XU Duanyang LI Chunlei ZHUANG Dafang PAN Jianjun | 2011 | Journal of Geographical Sciences2011,21,5: | 16 |
| 4 | Reducing nitrogen runoff from paddy fields with arbuscular mycorrhizal fungi under different fertilizer regimes显示文摘Nitrogen(N) runoff from paddy fields serves as one of the main sources of water pollution. Our aim was to reduce N runoff from paddy fields by fertilizer management and inoculation with arbuscular mycorrhizal fungi(AMF). In northeast China, Shuangcheng city in Heilongjiang province, a field experiment was conducted, using rice provided with 0%, 20%, 40%, 60%, 80%,and 100% of the local norm of fertilization(including N, phosphorus and potassium), with or without inoculation with Glomus mosseae. The volume, concentrations of total N(TN),dissolved N(DN) and particulate N(PN) of runoff water were measured. We found that the local norm of fertilization led to 18.9 kg/ha of N runoff during rice growing season, with DN accounting for 60%–70%. We also found that reduction in fertilization by 20% cut down TN runoff by 8.2% while AMF inoculation decreased N runoff at each fertilizer level and this effect was inhibited by high fertilization. The combination of inoculation with AMF and 80% of the local norm of fertilization was observed to reduce N runoff by 27.2%. Conclusively, we suggested that the contribution of AMF inoculation combined with decreasing fertilization should get more attention to slow down water eutrophication by reducing N runoff from paddy fields. | Shujuan Zhang Li Wang Fang Ma Xue Zhang Dafang Fu | 2016 | Journal of Environmental Sciences2016,28,8: | 8 |
| 5 | A Fast and Memory-Efficient Approach to NDN Name Lookup显示文摘For name-based routing/switching in NDN, the key challenges are to manage large-scale forwarding Tables, to lookup long names of variable lengths, and to deal with frequent updates. Hashing associated with proper length-detecting is a straightforward yet efficient solution. Binary search strategy can reduce the number of required hash detecting in the worst case. However, to assure the searching path correct in such a schema, either backtrack searching or redundantly storing some prefixes is required, leading to performance or memory issues as a result. In this paper, we make a deep study on the binary search, and propose a novel mechanism to ensure correct searching path without neither additional backtrack costs nor redundant memory consumptions. Along any binary search path, a bloom filter is employed at each branching point to verify whether a said prefix is present, instead of storing that prefix here. By this means, we can gain significantly optimization on memory efficiency, at the cost of bloom checking before each detecting. Our evaluation experiments on both real-world and randomly synthesized data sets demonstrate our superiorities | Dacheng He Dafang Zhang Ke Xu Kun Huang Yanbiao Li | 2017 | China Communications2017,14,10: | 4 |
| 6 | Postoperative Complications and Survival Analysis of Surgical Resection for Hilar Cholangiocarcinoma:A Retrospective Study of Fifty-Nine Consecutive Patients显示文摘Objective Hilar cholangiocarcinoma(HC)is invariably fatal without surgical resection.The primary aim of the current study was to determine the safety of variable surgical resections for patient with HC and their survival after surgical resection.In addition,prognostic factor for the overall survival was also evaluated.Methods The study included 59 consecutive patients who were newly diagnosed with HC and underwent surgical resections with curative intend between February 2009 and February 2017.Patients were followed up at 3-6 months intervals after hospital discharge.Postoperative complications and overall survival were determined.Associations of clinicopathologic and surgeon-related factors with overall survival were evaluated through univariate analysis and Cox regression analysis.Results Of patients with Bismuth and Corlette(B&C)type HI(n=19)and IV(n=25)HC lesions,33(55.9%)were treated with hilar resection combined with major liver resection(MLR),while the other 11 patients with type HI and IV,and those with type I(n=8)and II(n=7)HC lesions were treated with hilar resection.The overall surgical mortality was 5.1%and surgical morbidity was 35.6%.There was no statistical difference in the mortality between MLR group and hilar resection group(6.1%vs.3.8%;X2=0.703,P=0.145).The median follow-up period was 18 months(range,1-94 months).The 1-,3-,5-year survival rate was 59.3%,36.5%,and 17.7%,respectively.The overall survival after resections was 18 months.In HC patients with B&C type III and IV lesions,the median survival was 23 months for hilar resection with MLR and 8 months for hilar resection alone;the 1-,3-,5-year cumulative survival rate was 63.9%,23.3%,and 15.5%,respectively for hilar resection with MLR,and 11.1%,0,and 0,respectively for hilar resection alone,with significant diflerene observed(HR,9.902;95%CI,2.636-19.571,P=0.001).Four factors were independently associated with overall survival:preoperative serum Cal9-9(HR,7.039;95%CI,2.803-17.678,P<0.001),histopathologic grade(HR,4.964;95%CI,1.046-23.552,?=0.044),surgical margins(P=0.031),andAJCC staging(P=0.015).Conclusions R0 resection is efficacious in surgical treatment of HC.MLR in combination with caudate lobe resection may increase the chance of R0 resection and improve survival of HC patients with B&C type IK and IV lesions.Preoperatively prepared for biliary drainage may ensure the safety of MLR in most HC patients.Novel adjuvant therapies are needed to improve the survival of HC patients with poor prognostic factors. | Weihua Zhu Wenyong Xie Zhedong Zhang Shu Li Dafang Zhang Yijun Liu Jiye Zhu Xisheng Leng | 2020 | Chinese Medical Sciences Journal2020,35,2: | 4 |
| 7 | Preparation and characterization of continuous high-temperature resistant Si-Al-C fibers by one-step method显示文摘Using polymer-derived technology, continuous high-temperature resistant Si-Al-C fibers were prepared by one step method, which included melt-spinning of polya-luminocarbosilane (PACS), curing of continuous PACS fibers, and sintering of the cured products. The results show that the average diameter and tensile strength of continuous Si-Al-C fibers are 11 to 12 μm and 1.8 to 2.0 GPa, respectively. The chemical formula of Si-Al-C fibers is SiC1.01O0.0400Al0.024, which is nearly stoichometric. The fibers are mainly composed of β-SiC crystalline, small amount of α-SiC, and amorphous SiC. Continuous Si-Al-C fibers exhibit excellent thermal stability. When the fibers were exposed in argon for 1 h, the tensile strength did not decrease until 1500℃. After heat treatment at 1800℃ in argon for 1 h, the fibers maintained about 80% of the initial strength. It was higher than that of Nicalon and Hi-Nicalon fibers. | ZHENG ChunMan LI XiaoDong WANG Hao ZHAO DaFang HU TianJiao | 2008 | Science China(Technological Sciences)2008,51,9: | 4 |
| 8 | Mapping paddy rice agriculture in southern China using multi-temporal MODIS images显示文摘 | Xiangming Xiao Stephen Boles Jiyuan Liu Dafang Zhuang Steve Frolking Changsheng Li William Salas Berrien Moore | 2005 | Remote Sensing of Environment2005,,4: | 3 |
| 9 | Multi-stride Indexing: Improve NFA for Fast and Scalable DPI显示文摘Regular expression matching is one of the key techniques for Deep packet inspection(DPI). Generally, the Deterministic finite automata(DFA) can process regular expression matching at a very high rate but memory inefficient. By contrast, the Non-deterministic finite automata(NFA) improves the memory efficiency significantly, at the cost of low speed. To meet the increasing demands on both throughput and memory scalability, we propose a novel schema to achieve fast regular expression with reasonable and controllable memory consumption. According to observations on matching real traffic, we design a Multi-Stride Indexing(MSI) table and divide each matching into two steps, toward the MSI table and the NFA respectively. the MSI table consumes a small fixed amount of on-chip memories(it is about 20 KB for 2 stride level MSI table). After the most of unnecessary matching was eliminated via MSI table, we implement the fast-speed regular expression matching with NFA. | HUO Sheng ZHANG Dafang LI Yanbiao | 2018 | Chinese Journal of Electronics2018,27,1: | 2 |
| 10 | Mapping paddy rice agriculture in southern China using multi-temporal MODIS images显示文摘 | Xiangming Xiao Stephen Boles Jiyuan Liu Dafang Zhuang Steve Frolking Changsheng Li William Salas Berrien Moore | 2005 | Remote Sensing of Environment2005,,4: | 1 |
| 11 | Dynamics of Opinion Formation in a Small-world Network显示文摘 | Li Pingping Zheng Dafang Hui P M | 2006 | Physical Review E2006,73,: | 1 |
| 12 | Accurate counting Bloom filters for large-scale data processing 显示文摘 | Li Wei Zhang Dafang | 2013 | Mathematical Problems in Engineering2013,2013,: | 1 |
| 13 | Spatial sampling design for monitoring the area of cultivated land显示文摘 | WANG Jinfeng ZHUANG Dafang LI Lianfa | 2002 | International Journal of Remote Sensing2002,13,2: | 1 |
| 14 | 靶向肾癌中的E3连接酶接头蛋白SPOP的小分子抑制剂显示文摘近年来肾癌发病率上升幅度在恶性肿瘤中排名第一。临床治疗表明,肾癌对放疗和化疗均不敏感,以索拉非尼和舒尼替尼为代表的靶向抗肿瘤药物是晚期肾癌的一线治疗药物,但对转移性肾癌的疗效十分有限,并且容易产生耐药。因此,发现并确证治疗肾癌特异性药物作用新靶标是一项十分紧迫并意义重大的任务。 | Zhong-Qiang Guo Tong Zheng Baoen Chen Cheng Luo Sisheng Ouyang Shouzhe Gong Jiafei Li Liu-Liang Mao Fulin Lian Yong Yang Yue Huang Li Li Jing Lu Bidong Zhang Luming Zhou Hong Ding Zhiwei Gao Liqun Zhou Guoqiang Li Ran Zhou Ke Chen Jingqiu Liu Yi Wen Likun Gong Yuwen Ke Shang-Dong Yang Xiao-Bo Qiu Naixia Zhang Jin Ren Dafang Zhong 杨财广 刘江 蒋华良 | 2017 | 科学新闻2017,19,4: | 1 |
| 15 | Toward Energy-Efficiency Optimization of Pktgen-DPDK for Green Network Testbeds显示文摘The packet generator(pktgen) is a fundamental module of the majority of soft ware testers used to benchmark network pro tocols and functions. The high performance of the pktgen is an important feature of Future Internet Testbeds, and DPDK is a network packet accelerated platform, so we can use DPDK to improve performance. Meanwhile green computing is advocated for in the fu ture of the internet. Most existing efforts have contributed to improving either performance or accuracy. We, however, shifted the focu to energy-efficiency. We find that high per formance comes at the cost of high energy consumption. Therefore, we started from a widely used high performance schema, deeply studying the multi-core platform, especially in terms of parallelism, core allocation, and fre quency controlling. On this basis, we proposed an AFfinity-oriented Fine-grained CONtrolling(AFFCON) mechanism in order to improve energy efficiency with desirable performance As clearly demonstrated through a series o evaluative experiments, our proposal can re duce CPU power consumption by up to 11%while maintaining throughput at the line rate. | Guo Li Dafang Zhang Yanbiao Li Keqin Li | 2018 | China Communications2018,15,11: | 1 |
| 16 | HLA polymorphisms are associated with Helicobacter pylori infected gastric cancer in a high risk population, China显示文摘 | Zhaohui Li Dafang Chen Chunfeng Zhang Yong Li Bangwei Cao Tao Ning Yiming Zhao Weicheng You Yang Ke | 2005 | Immunogenetics2005,,11: | 1 |
| 17 | Association of polymorphisms in vascular endothelial growth factor gene with the age of onset of ALS显示文摘 | Chen Dafang Shen Li Wang Liping | 2007 | ALS2007,8,2: | 1 |
| 18 | Choline Transporters in Human Lung Adenocarcinoma: Expression and Functional Implications显示文摘然而,胆碱是为房间幸存和增长的必要营养素胆碱运输 ers 的表示和功能很好没在癌症被识别。在这研究,我们检测了 mRNA 和器官的阳离子 transporter 的蛋白质表示 OCT3,肉毒碱 / 阳离子运输 ers OCTN1 和 OCTN2,和在人的肺腺癌房间的像运输的 proteinCTL1 衬里的胆碱 A549, H1299 和 SPC-A-1.Their 表示模式是进一步的在 25 人的主要腺癌纸巾证实了。在这些房间线的胆碱举起被 CTL1 禁止者显著地堵住,但是仅仅部分在房间增长上由 10 月或这些禁止者的 OCTNinhibitors.The 功效禁止了密切与他们堵住胆碱运输的能力被相关。在这些运输 ers 的本国的表示下面,全部的胆碱举起被特定的 PI3K/AKT 禁止者显著地堵住。这些结果在人的肺腺癌的房间增长描述胆碱运输 ers 和他们的相关功能的表示,因此提供潜在的“胆碱饥饿”通过指向胆碱运输 ers 的癌症干扰的策略,特别 CTL1。 | Tao WANG Jinjun LI Fei CHEN Yingjun ZHAO Xianghuo HE Dafang WAN Jianren GU | 2007 | Acta Biochimica et Biophysica Sinica2007,39,9: | 1 |
| 19 | BEM FOR MODAL ANALYSIS OF 3-D ANISOTROPIC STRUCTURES显示文摘The boundary element method for the modal analysis of free vibration for 3-D anisotropicstructures using particular solutions has been developed.The complete polynomials of order two are used toconstruct the particular solutions for general anisotropic materials.The numerical results for 3-D free vibra-tion analysis of an isotropie cantilever beam by the method presented is in good agreement with the results us-ing the Ritz technique.For anisotropic materials,the numerical results calculated from the proposed methodare in good agreement with the results from MSC.NASTRAN. | Du Sanhu Wu Dafang Li Zailiang | 2001 | Acta Mechanica Solida Sinica2001,14,4: | 1 |
| 20 | On evaluating the differences of TCP and ICMP in network measurement显示文摘 | Li Wenwei Zhang Dafang Yang Jinmin | 2007 | Computer Communications2007,30,2: | 1 |