|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 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 | An ABA-mimicking ligand that reduces water loss and promotes drought resistance in plants显示文摘Abscisic 酸(骆驼毛的织物) 是最重要的荷尔蒙让植物抵抗干旱和另外的不能生活的压力。骆驼毛的织物直接绑在骆驼毛的织物受体的 PYR/PYL 家庭,导致类型 2C 磷酸酶(PP2C ) 和下游的骆驼毛的织物发信号的激活的抑制。骆驼毛的织物由小分子发信号的干预能帮助植物克服象干旱,寒冷和土壤咸度那样的不能生活的压力,这被想象。然而,由植物酶的化学不稳定性和快速的分解代谢限制骆驼毛的织物本身的实际申请。这里,我们报导一件小分子骆驼毛的织物的鉴定模仿(AM1 ) 那充当骆驼毛的织物受体的家庭的多重成员的有势力使活跃之物。在 Arabidopsis, AM1 激活高度类似于由骆驼毛的织物导致了那的一个基因网络。有 AM1 的处理禁止种子萌芽,阻止叶水损失,并且支持干旱抵抗。我们与 PYL2 骆驼毛的织物受体和 HAB1 PP2C 在建筑群解决了 AM1 的水晶结构,它表明 AM1 调停交往的 gate-latch-lock 网络,在骆驼毛的织物界限 receptor/PP2C 建筑群被保存的一个结构的特征。一起,这些结果证明一件单个小分子骆驼毛的织物模仿能激活多重骆驼毛的织物受体并且保护植物免受水损失和干旱应力的伤害。而且, AM1 复杂水晶结构为设计 ABA-mimicking 小分子的下一代提供一个结构的基础。 | Minjie Cao Xue Liu Yan Zhang Xiaoqian Xue X EdwardZhou Karsten Melcher Pan Gao Fuxing Wang Liang Zeng Yang Zhao Pan Deng Dafang Zhong Jian-Kang Zhu H Eric Xu Yong Xu | 2013 | Cell Research2013，23，8： | 17 |
| 4 | Ubi1 intron-mediated enhancement of the expression of Bt cry1Ah gene in transgenic maize (Zea mays L.)显示文摘The cry1Ah gene was one of novel insecticidal genes cloned from Bacillus thuringiensis isolate BT8. Two plant expression vectors containing cry1Ah gene were constructed. The first intron of maize ubiqutin1 gene was inserted between the maize Ubiquitin promoter and cry1Ah gene in one of the plant expressing vectors (pUUOAH). The two vectors were introduced into maize immature embryonic calli by microprojectile bombardment, and the reproductively plants were acquired. PCR and Southern blot analysis showed that foreign genes had been integrated into maize genome and inherited to the next generation stably. The ELISA assay to T1 and T2 generation plants showed that the expression of Cry1Ah protein in the construct containing the ubi1 intron (pUUOAH) was 20% higher than that of the intronless construct (pUOAH). Bioassay results showed that the transgenic maize harboring cry1Ah gene had high resistance to the Asian corn borers and the insecticidal activity of the transgenic maize containing the ubi1 intron was higher than that of the intronless construct. These results indicated that the maize ubi1 intron can enhance the expression of the Bt cry1Ah gene in transgenic maize | WANG YueBing LANG Zhihong ZHANG Jie HE KangLai SONG FuPing HUANG DaFang | 2008 | Chinese Science Bulletin2008，53，20： | 15 |
| 5 | Optimization of parameters on photocatalytic degradation of chloramphenicol using TiO_2 as photocatalyist by response surface methodology显示文摘The experimental design methodology was applied for modeling and optimizing the operation parameters on photocatalytic degradation of chloramphenicol (CAP) using TiO 2 as photocatalyst in a photoreactor. Three experimental parameters (including pH, TiO 2 concentration and CAP initial concentration) were adopted to obtain the preliminary information. The multivariate experimental design was employed to establish a quadratic model as a functional relationship between the degradation rate of CAP and three experimental parameters. The interaction effects and optimal parameters were obtained by using Design Expert software. The optimal values of the operation parameters under the related constraint conditions were found at pH 6.4, TiO 2 concentration of 0.94 g/L and CAP initial concentration of 19.97 mg/L, respectively. The degradation rate of CAP approached 85.97% under optimal conditions. The regression analysis with R 2 value of 0.9519 had a good agreement between the experimental results and the predictive values. In addition, pH and TiO 2 concentration had a significant influence on the degradation rate of CAP. | Junwei Zhang Dafang Fu Yunda Xu Cuiyun Liu | 2010 | Journal of Environmental Sciences2010，22，8： | 13 |
| 6 | Photodegradation of Norfloxacin in aqueous solution containing algae显示文摘Photodegradation of Norfloxacin in aqueous solution containing algae under a medium pressure mercury lamp(15 W,λ max = 365 nm) was investigated.Results indicated that the photodegradation of Norfloxacin could be induced by the algae in the heterogeneous algaewater systems.The photodegradation rate of Norfloxacin increased with increasing algae concentration,and was greatly influenced by the temperature and pH of solution.Meanwhile,the cooperation action of algae and Fe(III),and the ultrasound were beneficial to photodegradation of Norfloxacin.The degradation kinetics of Norfloxacin was found to follow the pseudo zero-order reaction in the suspension of algae.In addition,we discussed the photodegradation mechanism of Norfloxacin in the suspension of algae.This work will be helpful for understanding the photochemical degradation of antibiotics in aqueous environment in the presence of algae,for providing a new method to deal with antibiotics pollution. | Junwei Zhang Dafang Fu Jilong Wu | 2012 | Journal of Environmental Sciences2012，24，4： | 10 |
| 7 | An intracellular toxic protein (Xin) isolated from Xenorhabdus nematophilus strain BJ显示文摘An intracellular toxic protein, designated Xin and with remarkable inhibitory effect on growth of Helicoverpa armigera, was isolated from X. Nematophilus strain BJ by ion exchange chromatography and hydrophobic interaction chromatography. After placing neonates on the artificial diet containing Xin at concentration of 0 or 3.48μg/g for 7 days, the average weight of insects was 23.50mg and 0.55mg, respectively. The activity of Xin was lost by heating, freeze-drying, digestion with proteases or urea. The Xin molecular weight, over kD, was determined by gel filtration on Superose 12, and there were six component proteins analyzed by SDS-PAGE. The results show that Xin is a high molecular protein complex inhibiting growth of insect pest. | PAN Yinghong , JIAN Heng , ZHANG Jie , LIU Zheng, CHEN Zhongyi , YANG Xiufen, YANG Huaiwen and HUANG Dafang( State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China Institute of Biocontrol Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China Institute of Biotechnology Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China.) | 2002 | Progress in Natural Science:Materials International2002，12，4： | 9 |
| 8 | 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 |
| 9 | Esophageal cancer spatial and correlation analyses: Water pollution, mortality rates, and safe buffer distances in China显示文摘食道的癌症在中国展出最高的发生和死亡率之一。恶意的肿瘤由食道的癌症引起了,并且到环境因素的关系是许多公共健康研究的焦点。这研究使用了空间分析全国查明在水污染和食道的癌症死亡率之间的关系。我们采用了二数据集,包括质量在瓷器主要的河和湖里分级的率和分布,和公民浇的食道的癌症的国家调查。食道的癌症数据基于不同的水质量等级被组织,它从河和湖包括了放大缓冲区距离。非参量的关联分析被执行检验下列关联的存在或缺席:(i) 来自河和湖的食道的癌症死亡和缓冲区距离;并且(ii ) 食道的癌症死亡和水质量分级价值。现在的学习全国揭示了在普遍的水污染和食道的癌症死亡之间的重要积极关联;并且在食道的癌症死亡之间的重要否定关联,和来自河和湖的缓冲区距离。 | ZHANG Xueyan ZHUANG Dafang MA Xin JIANG Dong | 2014 | Journal of Geographical Sciences2014，24，1： | 6 |
| 10 | 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 |
| 11 | 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 |
| 12 | A Geography-Intimacy-Based Algorithm for Data Forwarding in Mobile Social Networks显示文摘Due to uncertain network connectivity, efficiently data forwarding in Mobile social networks(MSNs)becomes challenging. To conquer the problem, an Efficient data forwarding scheme based on geography intimacy(GIDF) for MSNs to achieve higher delivery ratio is proposed. In GIDF, we firstly propose an Intimacy based dynamic community detection algorithm(IDCD), which divide the MSNs into several communities. We propose a novel metric geography intimacy which can quantify the node's geographical information and the friendships between nodes. Based on geography intimacy, we further propose a routing algorithm to forward data. Compared with the geography intimacy between nodes, the next hop is found, further find the route of data forwarding by doing the similar operations. Extensive simulations on real data with the ONE simulator show that GIDF is more efficient than the existing algorithms. | ZHENG Yi ZHANG Dafang XIE Kun | 2016 | Chinese Journal of Electronics2016，25，5： | 3 |
| 13 | Spatial and temporal patterns of China’s cropland during 1990–2000: An analysis based on Landsat TM data显示文摘 | Jiyuan Liu Mingliang Liu Hanqin Tian Dafang Zhuang Zengxiang Zhang Wen Zhang Xianming Tang Xiangzheng Deng | 2005 | Remote Sensing of Environment2005，，4： | 2 |
| 14 | Distributed Low-Complexity Channel Assignment for Opportunistic Routing显示文摘Opportunistic Routing (OR) involves multiple forwarding candidates to relay packets by taking advantage of the broadcast nature and multi-user diversity of a wireless medium. Compared with Traditional Routing (TR), OR is more suitable in the case of an unreliable wireless link and can evidently improve the end-to-end throughput of Wireless Mesh Networks (WMNs). In this paper, we focus on OR in Multi-Radio Multi-Channel WMNs (MRMC-WMNs). This problem has not been well examined and is considerably more challenging than the OR in single-radio wireless networks considered in the existing literature. First, we validate the advantage of OR in MRMC-WMNs. Second, we propose Low-complexity Channel Assignment for Opportunistic Routing (LcCAOR), which assigns channels to flows according to the interference state of every node. Third, we implement the LcCOAR in a fully distributed manner. The simulation result shows that compared with OR in Single-Radio Single-Channel WMNs (SRSC-WMNs), the proposed OR can significantly enhance the throughput to 87.11% and 100.3% in grid and tree WMNs, respectively. | He Shiming Zhang Dafang Xie Kun Qiao Hong Zhang Ji | 2012 | China Communications2012，9，11： | 2 |
| 15 | 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 |
| 16 | Ectopic overexpression of tomato JERF3 in tobacco activates downstream gene expression and enhances salt tolerance显示文摘 | Hui Wang Zejun Huang Qi Chen Zhijin Zhang Hongbo Zhang Yanming Wu Dafang Huang Rongfeng Huang | 2004 | Plant Molecular Biology2004，，2： | 1 |
| 17 | Families of non -t ravelling wave solutions to a generalized variable coeglcient two -dimensional Kd- equation using symbolic computation显示文摘 | Hengnong Xuan Dafang Zhang Changji Wang | | 0，，： | 1 |
| 18 | Toward accurate and efficient available bandwidth measurement显示文摘 | LIU JUN ZHANG DAFANG | 2009 | Telecommunication Systems2009，41，3： | 1 |
| 19 | Tomato stress-responsive factor TSRF1 interacts with ethylene responsive element GCC box and regulates pathogen resistance to Ralstonia solanacearum显示文摘 | Hongbo Zhang Dabing Zhang Jia Chen Yuhong Yang Zejun Huang Dafang Huang Xue-Chen Wang Rongfeng Huang | 2004 | Plant Molecular Biology2004，，6： | 1 |
| 20 | A new link quality es timation mechanism based on LQI in WSN显示文摘 | Jian Luo Liu Yu Dafang Zhang | 2013 | Information Technology Journal2013，12，8： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员