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| 1 | Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China显示文摘In January 2013,a long-lasting episode of severe haze occurred in central and eastern China,and it attracted attention from all sectors of society.The process and evolution of haze pollution episodes were observed by the'Forming Mechanism and Control Strategies of Haze in China'group using an intensive aerosol and trace gases campaign that simultaneously obtained data at 11 ground-based observing sites in the CARE-China network.The characteristics and formation mechanism of haze pollution episodes were discussed.Five haze pollution episodes were identified in the Beijing-Tianjin-Hebei(Jing-Jin-Ji)area;the two most severe episodes occurred during 9–15 January and 25–31 January.During these two haze pollution episodes,the maximum hourly PM2.5mass concentrations in Beijing were 680 and 530μg m 3,respectively.The process and evolution of haze pollution episodes in other major cities in the Jing-Jin-Ji area,such as Shijiazhuang and Tianjin were almost the same as those observed in Beijing.The external cause of the severe haze episodes was the unusual atmospheric circulation,the depression of strong cold air activities and the very unfavorable dispersion due to geographical and meteorological conditions.However,the internal cause was the quick secondary transformation of primary gaseous pollutants to secondary aerosols,which contributed to the'explosive growth'and'sustained growth'of PM2.5.Particularly,the abnormally high amount of nitric oxide(NOx)in the haze episodes,produced by fossil fuel combustion and vehicle emissions,played a direct or indirect role in the quick secondary transformation of coal-burning sulphur dioxide(SO2)to sulphate aerosols.Furthermore,gaseous pollutants were transformed into secondary aerosols through heterogeneous reactions on the surface of fine particles,which can change the particle’s size and chemical composition.Consequently,the proportion of secondary inorganic ions,such as sulphate and nitrate,gradually increased,which enhances particle hygroscopicity and thereby accelerating formation of the haze pollution. | WANG YueSi YAO Li WANG LiLi LIU ZiRui JI DongSheng TANG GuiQian ZHANG JunKe SUN Yang HU Bo XIN JinYuan | 2014 | Science China Earth Sciences2014,57,1: | 189 |
| 2 | Highly fractionated granites:Recognition and research显示文摘Granite is one of the most important components of the continental crust on our Earth; it thus has been an enduring studied subject in geology. According to present knowledge, granite shows a great deal of heterogeneity in terms of its texture,structure, mineral species and geochemical compositions at different scales from small dike to large batholith. However, the reasons for these variations are not well understood although numerous interpretations have been proposed. The key point of this debate is whether granitic magma can be effectively differentiated through fractional crystallization, and, if so, what kind of crystallization occurred during the magmatic evolution. Although granitic magma has high viscosity because of its elevated SiO2 content, we agree that fractional crystallization is effectively processed during its evolution based on the evidence from field investigation,mineral species and its chemical variations, and geochemical compositions. These data indicate that crystal settling by gravitation is not the only mechanism dominating granitic differentiation. On the contrary, flow segregation or dynamic sorting may be more important. Accordingly, granite can be divided into unfractionated, fractionated(including weakly fractionated and highly fractionated) and cumulated types, according to the differentiation degree. Highly fractionated granitic magmas are generally high in primary temperature or high with various volatiles during the later stage, which make the fractional crystallization much easier than the common granitic melts. In addition, effective magmatic differentiation can be also expected when the magma emplaced along a large scale of extensional structure. Highly fractionated granitic magma is easily contaminated by country rocks due to its relatively prolonged crystallization time. Thus, granites do not always reflect the characteristics of the source areas and the physical and chemical conditions of the primary magma. We proposed that highly fractionated granites are an important sign indicating compositional maturity of the continental crust, and they are also closely related to the rare-elemental(metal) mineralization of W,Sn, Nb, Ta, Li, Be, Rb, Cs, REEs, etc. | WU FuYuan LIU XiaoChi JI WeiQiang WANG JiaMin YANG Lei | 2017 | Science China Earth Sciences2017,60,7: | 109 |
| 3 | Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations. | Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song | 2019 | Science Bulletin2019,64,6: | 166 |
| 4 | New generation of multi-scale NWP system (GRAPES):general scientific design显示文摘A new generation of numerical prediction system GRAPES (a short form of Global/Regional Assimilation and PrEdiction System) was set up in China Meteorological Administration (CMA). This paper focuses on the scientific design and preliminary results of the numerical prediction model in GRAPES, including basic idea and strategy of the general scientific design, multi-scale dynamic core, physical package configuration, architecture and parallelization of the codes. A series of numerical experiments using the real data with horizontal resolutions from 10 to 280 km and idealized experiments with very high resolution up to 100 m are conducted, giving encouraging results supporting the multi-scale application of GRAPES. The results of operational implementation of GRAPES model in some NWP centers are also presented with stress at evaluations of the capability to predict the main features of precipitation in China. Finally the issues to be dealt with for further development are discussed. | CHEN DeHui XUE JiShan YANG XueSheng ZHANG HongLiang SHEN XueShun HU JiangLin WANG Yu JI LiRen CHEN JiaBin | 2008 | Chinese Science Bulletin2008,53,22: | 70 |
| 5 | RNA-seq analysis of prostate cancer in the Chinese population identifies recurrent gene fusions, cancer-associated long noncoding RNAs and aberrant alternative splicings显示文摘在有前列腺癌症的不同赛跑的病人之中有显著不同;然而,位于这差别下面的机制仍然保持不清楚。这里,我们在场 transcriptome 的一处全面风景用 RNA-seq,越过关于基因熔化的前列腺癌症 transcriptomes 的揭示巨大的差异,长 noncoding RNA (长 ncRNA ) ,其他的拼接和体的变化从中国人口 14 主要前列腺癌症和他们的配对的正常对应物介绍。14 个肿瘤(21.4%) 中的三个在中国病人怀有 TMPRSS2 尔格熔化,和这熔化的低流行进一步在一个另外的肿瘤集合(10/54=18.5%) 被证实。尤其是,二新奇基因熔化, CTAGE5-KHDRBS3 (20/54=37%) 和 USP9Y-TTTY15 (19/54=35.2%) ,在我们的耐心的队经常发生了。介绍的进一步系统的 transcriptional 识别了是在肿瘤表示的差别的众多的长 ncRNAs。在长 ncRNA 和基因的表示之间的关联的分析建议长 ncRNAs 可以在 transcriptional 规定以外有功能。这研究在中国人口产出新卓见进前列腺癌症的致病。 | Shancheng Ren Zhiyu Peng Jian-Hua Mao Yongwei Yu Changjun Yin Xin Gao Zilian Cui Jibin Zhang Kang Yi Weidong Xu Chao Chen Fubo Wang Xinwu Guo Ji Lu Jun Yang Min Wei Zhijian Tian Yinghui Guan Liang Tang Chuanliang Xu Linhui Wang Xu Gao Wei Tian Jian Wang Huanming Yang Jun Wang Yinghao Sun | 2012 | Cell Research2012,22,5: | 66 |
| 6 | Influence of the impounding process of the Three Gorges Reservoir up to water level 172.5m on water eutrophication in the Xiangxi Bay显示文摘The water level of the Three Gorges Reservoir(TGR) rose to 172.5 m in two stages from September to November,2008.The hydrodynamic parameters and water quality parameters(e.g.flow velocity,temperature,turbidity and nutrient content) had been continuously monitored to reveal the influence of the impounding process of the TGR on the water eutrophication in the Xiangxi Bay(XXB).The maximal daily rise of the water level of the TGR was about 2.38 m.The water exchange between the mainstream(the Changjiang River) and the XXB of the TGR was enhanced by density current,and its main characteristics were a density-stratified flow in different directions.The water exchange reduced the differences of the water quality parameters(for example,temperature,turbidity,nutrient level,pH,etc.) between the mainstream and the XXB during the impounding process.Meanwhile,the water stability index in the mainstream remained small but it was lowered in the XXB.The main causes included the dilution by water of lower concentration of the chlorophyll a(Chl.a) entering from the mainstream,the decline of the water stability,and the increase of suspended silt,which induced the Chl.a to decrease in the XXB during the impounding process.The grade of the water eutrophication changed from middle eutrophic level to mesotrophic state in the process.However,as available nutrients were imported into the XXB from the mainstream during the impounding process the risk of water eutrophication increases in the XXB in the future. | YANG ZhengJian1,LIU DeFu1,JI DaoBin1,2 & XIAO ShangBin1,3 1 College of Civil & Hydroelectric Engineering,China Three Gorges University,Yichang 443002,China 2 School of Water Resources & Hydropower Engineering,Wuhan University,Wuhan 430072,China 3 Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China | 2010 | Science China(Technological Sciences)2010,53,4: | 58 |
| 7 | Inhibitory effect of IGF-Ⅱ antisense RNA on malignant phenotype of hepatocellular carcinoma显示文摘INIRODUCTIONAccording to the therapeutic effect and strategy ofantisense RNA for hepatoccllular carcinoma(HCC),we have specifically synthesized partialcDNA of human insulin-like growth factor Ⅱ(IGF-Ⅱ)and constructed IGF-Ⅱ cDNA antisenseeukaryotic expression vector.The constructedvector was introduced into hepatoma cell lineSMMC-7721 to block the intrinsic IGF-Ⅱexpression.The biological behavior changes ofhepatoma cells were observed.All these | Dong Hua Yang Ming Qing Zhang Jiang Du Chong Xu Oiao Ming Liang Ji Fang Mao Han Rong Qin Zi Rong Fan Department of Gastroenterology,Zhujiang Hospital,the First Military Medical University,Guangzhou 510282,China Laboratory of Molecular Biology,Zhujiang Hospital,the First Military Medical University,Guangzhou,China Departrnent of Biochemistry,the Second Military Medical University,Shanghai,China | 2000 | World Journal of Gastroenterology2000,6,2: | 54 |
| 8 | Contrasting trends of PM2.5 and surface-ozone concentrations in China from 2013 to 2017显示文摘Although much attention has been paid to investigating and controlling air pollution in China,the trends of air-pollutant concentrations on a national scale have remained unclear.Here,we quantitatively investigated the variation of air pollutants in China using long-term comprehensive data sets from 2013 to 2017,during which Chinese government made major efforts to reduce anthropogenic emission in polluted regions.Our results show a significant decreasing trend in the PM2.5 concentration in heavily polluted regions of eastern China,with an annual decrease of〜7%compared with measurements in 2013.The measured decreased concentrations of SO2>NO2 and CO(a proxy for anthropogenic volatile organic compounds)could explain a large fraction of the decreased PM2.5 concentrations in different regions.As a consequence;the heavily polluted days decreased significantly in corresponding regions.Concentrations of organic aerosol;nitrate;sulfate,ammonium and chloride measured in urban Beijing revealed a remarkable reduction from 2013 to 2017;connecting the decreases in aerosol precursors with corresponding chemical components closely.However;surface-ozone concentrations showed increasing trends in most urban stations from 2013 to 2017;which indicates stronger photochemical pollution.The boundary-layer height in capital c让ies of eastern China showed no significant trends over the Beijing-Tianjin-Hebei,Yangtze River Delta and Pearl River Delta regions from 2013 to 2017;which confirmed the reduction in anthropogenic emissions.Our results demonstrated that the Chinese government was successful in the reduction of particulate matter in urban areas from 2013 to 2017,although the ozone concentration has increased significantly;suggesting a more complex mechanism of improving Chinese air quality in the future. | Yonghong Wang Wenkang Gao Shuai Wang Tao Song Zhengyu Gong Dongsheng Ji Lili Wang Zirui Liu Guiqian Tang Yanfeng Huo Shili Tian Jiayun Li Mingge Li Yuan Yang Biwu Chu Tuukka Petaja Veli-Matti Kerminen Hong He Jiming Hao Markku Kulmala Yuesi Wang Yuanhang Zhang | 2020 | National Science Review2020,7,8: | 51 |
| 9 | Gastric cancer: Epidemiology, risk factors and prevention strategies显示文摘Gastric cancer(GC) is a global health problem, with more than 1 million people newly diagnosed with GC worldwide each year. GC is more prevalent in less developed countries than in more developed countries. About half of all GC cases worldwide occur in East Asia, notably China. Globally, overall incidence rates of GC are declining, which is potentially attributed to a decrease in Helicobacter pylori(H. pylori) infection and the use of refrigeration to preserve foods rather than salt. GC is a multifactorial disease, and its occurrence and development were impacted by environmental and genetic factors. H. pylori infection is the primary risk factor for GC, especially for non-cardia. The prognosis of GC is poor due to stages at the first diagnosis. The 5-year survival rate is less than 10% when patients are diagnosed at an advanced stage, but the rate is as high as 85% if patients are detected at an earlier stage. Endoscopic screening can potentially prevent GC by early diagnosis and early treatment and has been widely adopted in screening programs in East Asian countries, such as Japan and Korea. This review summarizes updated epidemiological aspects, risk factors, and prevention strategies of GC in recent years to help researchers determine the most effective intervention strategies for reducing risk of GC. | Lei Yang Xiangji Ying Shuo Liu Guoqing Lyu Zekuan Xu Xi Zhang Huichao Li Qingyu Li Ning Wang Jiafu Ji | 2020 | Chinese Journal of Cancer Research2020,32,6: | 52 |
| 10 | Chinese expert consensus on cytoreductive surgery and hyperthermic intraperitoneal chemotherapy for peritoneal malignancies显示文摘Locoregional spread of abdominopelvic malignant tumors frequently results in peritoneal carcinomatosis(PC). The prognosis of PC patients treated by conventional systemic chemotherapy is poor, with a median survival of < 6 mo. However, over the past three decades, an integrated treatment strategy of cytoreductive surgery(CRS) + hyperthermic intraperitoneal chemotherapy(HIPEC) has been developed by the pioneering oncologists, with proved efficacy and safety in selected patients. Supported by several lines of clinical evidence from phases Ⅰ, Ⅱ and Ⅲ clinical trials, CRS + HIPEC has been regarded as the standard treatment for selected patients with PC in many established cancer centers worldwide. In China, an expert consensus on CRS + HIPEC has been reached by the leading surgical and medical oncologists, under the framework of the China Anti-Cancer Association. This expert consensus has summarized the progress in PC clinical studies and systematically evaluated the CRS + HIPEC procedures in China as well as across the world, so as to lay the foundation for formulating PC treatment guidelines specific to the national conditions of China. | Yan Li Yun-Feng Zhou Han Liang Hua-Qing Wang Ji-Hui Hao Zheng-Gang Zhu De-Seng Wan Lun-Xiu Qin Shu-Zhong Cui Jia-Fu Ji Hui-Mian Xu Shao-Zhong Wei Hong-Bin Xu Tao Suo Shu-Jun Yang Cong-Hua Xie Xiao-Jun Yang Guo-Liang Yang | 2016 | World Journal of Gastroenterology2016,22,30: | 58 |
| 11 | Jurassic Tectonic Revolution in China and New Interpretation of the “Yanshan Movement”显示文摘摘要:与结构的地质的调查的新数据和高分辨率的同位素的标明日期数据的获得和累积,我们极大地改进了我们从迟了的侏罗记在时期期间发生在东方中国到早白垩纪的构造事件的理解并且可以给性质的新解释,预定并且 Yanshan 运动的 geodynamic 背景。在中间迟了的侏罗记期间(165 挠慬獳漠 ?? | DONG Shuwen ZHANG Yueqiao LONG Changxing YANG Zhenyu JI Qiang WANG Tao HU Jianmin CHEN Xuanhua | 2008 | Acta Geologica Sinica(English Edition)2008,82,2: | 41 |
| 12 | Paeoniflorin suppresses TGF-β mediated epithelial- mesenchymal transition in pulmonary fibrosis through a Smad-dependent pathway显示文摘 | Yu JI Yan-nong DOU Qian-wen ZHAO Ji-zhou ZHANG Yan YANG Ting WANG Yu-feng XIA Yue DAI Zhi-feng WEI | 2016 | Acta Pharmacologica Sinica2016,37,6: | 48 |
| 13 | The Sequence of Magmatic-Tectonic Events and Orogenic Processes of the Yanshan Belt, North China显示文摘This paper emphasizes that the interactive constraints of geology and isotopic dating is the best approach to construct the geological event sequence, and has compiled 106 data of reasonable isotopic ages for the igneous rocks of the Yanshan belt. We propose a sequence of mgmatic-tectonic events in the Jurassic-Cretaceous Yanshan orogen of North China. Five orogenic episodes are divided, (1) pre-and initial orogenic episode (Early Jurassic); (2) early orogenic episode (Middle Jurassic); (3) peak orogenic episode (Late Jurassic); (4) late orogenic episode (early Early Cretaceous),and (5) post-orogenic episode. Each episode is a short cycle, all of the orogenic processes construct a longer cycle, and they, in general, followed a counter-clockwise (ccw) PTt path. Finally, it is suggested that the Yanshanian movement was so intensive that the magmatism and tectonic deformation had involved all the lithosphere thickness and the lateAchaean-formed cratonic lithosphere had been significantly reworked. | DENG Jinfu, SU Shangguo, MO Xuanxue, ZHAO Guochun, XIAO Qinghiu, JI Guangyi,QIU Ruizhao, ZHAO Hailing, LUO Zhaohua, WANG Yang and LIU Cui China University of Geosciences, Beijing 100083 and Key Laboratory of Lithospheric Tectonics and Lithoprobe Techniques, Ministry of Education of China | 2004 | Acta Geologica Sinica(English Edition)2004,78,1: | 35 |
| 14 | One-step generation of p53 gene biallelic mutant Cynomolgus monkey via the CRISPR/Cas system显示文摘 | Haifeng Wan Chunjing Feng Fei Teng Shihua Yang Baoyang Hu Yuyu Niu Andy Peng Xiang Weizhen Fang Weizhi Ji Wei Li Xiaoyang Zhao Qi Zhou | 2015 | Cell Research2015,25,2: | 39 |
| 15 | Mitochondrial PKM2 regulates oxidative stress-induced apoptosis by stabilizing Bcl2显示文摘 | Ji Liang Ruixiu Cao Xiongjun Wang Yajuan Zhang Pan Wang Hong Gao Chen Li Fan Yang Rong Zeng Ping Wei Dawei Li Wenfeng Li Weiwei Yang | 2017 | Cell Research2017,27,3: | 39 |
| 16 | The immunotherapeutic effect of dendritic cells vaccine modified with interleukin-18 gene and tumor cell lysate on mice with pancreatic carcinoma显示文摘AIM:To estimate the effect of a therapeutic vaccine against pancreatic carcinoma based on dendritic cell(DC)vaccine modified with tumor lysate and Interleukin-18 gene.METHODS:The BALB/C mice model of pancreatic arcinoma was induced with DMBA,DCvaccine was construted through pulsed with tumor lysate and transfected by the recombinant adenoviral vector encoding IL-18gene.The immnotherapeutic effects of DC vaccine on mice with pancreatic carcinoma were assessed (divided intoD-IL18-Lysate group,DC-Lysate group,DC-IL18 group,DC group,PBSgroup).RESULTS:After vaccination of the DC vaccine,the concentration of IL-18and IFN-γwere 2161±439ng·L^-1and435±72ng·L^-1inDC-IL18-Lysate group and there was significant difference compared with other groups(P<0.01)After vaccination of the DCcvaccine,the transplanted tumors were observed on 30days inDC-Lysate groups.on 16daysinDC-IL18groups.on3days in control group,but mice remained tumor-free for at least50days in DC-IL18-Lysate group and there was significant difference between DC-IL18-Lysate group and other groups(P<0.01).The median survival exceeds62days in DC-IL18-Lysate group.But the medsian surival was 48.6days in DC-Lysate group,33days in DC-IL-18group,17days in PBSgroup.The survival period was obviously prolonged in DC-IL18-Lysate group than in other groups(P<0.05,P<0.01).The weight of pancreatic tumor was0.22±0.083ginDC-IL18-Lysate group,1.45±0.74ginDC-Lysate group,1.89±1.34gin DC-IL18group,3.0±1.6ginDCgroup,2.9±2.0ginPBSgroup and the weight of tumor obviously reduced in DC-IL-18-Lysate group than in other groups(P<0.05,P<0.01).CONCLUSION:DC vaccine modified with tumo lysate and Interleukin-18gene can induce a specific and effective immune response against pancreatic cancinoma,cell. | Zhao-Hui Tang Gao-Song Wu Sheng-Quan Zou Fa-Zhu Qiu Department of Surgery of Tong Ji Hospital Wen-Hong Qiu Department of immunology,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,Hubei Province,China Xiang-Ping Yang Department of Biochemistry,Rheinisch-Westfalische Technische Hochschule(RWTH),D-52074 Aachen,Germany | 2002 | World Journal of Gastroenterology2002,8,5: | 37 |
| 17 | A 16000-year pollen record of Qinghai Lake and its paleoclimate and paleoenvironment显示文摘The paleoclimate and paleoenvironment of Qinghai Lake indicated by a 16000-year pollen record are as follows. It was very cold and dry before 15200 years. During the Late Glacial, the climate varied from colder and semiarid to cool and semi-humid and fluctuated frequently but with little amplitude. Three cold events in the periods of 13400-13000, 11600-12000, and 11000-10400 aBP respectively correspond to the Oldest Dryas, Older Dryas and Younger Dryas events, whereas the two warm periods between them, 12000-13000 and 11600-11000 aBP, respectively correspond to Boiling and Allerod periods. The temperature increased abruptly after the Younger Dryas event, and then the climate gradually turned to be warm and wet from warm and semiarid. In the Holocene, the largest amplitude of cold event that occurred at ca. 8200 aBP is quite prominent. The Holocene climatic optimum culminated at 6700 aBP. After 2100 aBP, the climate tended to be cold and dry, keeping on up to now. Palaeoclimatic evolution and events of | LIU Xingqi SHEN Ji WANG Sumin YANG Xiangdong TONG Guobang ZHANG Enlou | 2002 | Chinese Science Bulletin2002,47,22: | 33 |
| 18 | Application of surface-enhanced laser desorption/ionization time-of-flight-based serum proteomic array technique for the early diagnosis of prostate cancer显示文摘瞄准:由蛋白质薄片和生物信息学识别前列腺癌症(PCa ) 的浆液简历标记。方法:从 83 个 PCa 病人和 95 个健康的人的浆液样品从在长春屏蔽的一个团被拿,中国。蛋白质介绍用提高表面的激光解吸附作用 / 电离 time-of-flight 团分光术(SELDI-TOF MS ) 被执行。系列的数据用二个生物信息学工具被分析。结果:十八浆液微分蛋白质与控制组相比在 PCa 组被识别(P <
0.01 ) 。在在 PCa 组的更低的浆液水平在更高的浆液水平和 14 蛋白质有四蛋白质。使用了一个八蛋白质的集体模式的一个决定树分类算法被开发正确地分类样品。92.0% 的敏感和为学习组的 96.7% 的特性被比较 PCa 和控制组获得。结论:我们识别了 PCa 的新浆液简历标记。SELDI-TOF MS 结合了树分类算法将为 PCa 的早诊断提供一条高度精确、创新的途径的一个决定。 | Yu-Zhuo Pan Xue-Yuan Xiao Dan Zhao Guo-Yi Ji Yang Li Bao-Xue Yang Da-Cheng He Xue-Jian Zhao | 2006 | Asian Journal of Andrology2006,8,1: | 32 |
| 19 | Phosphorus in Interstitial Water Induced by Redox Potential in Sediment of Dianchi Lake,China显示文摘The sediment redox potential was raised in the laboratory to estimate reduction of internal available phosphorus loads,such as soluble reactive phosphorus(SRP)and total phosphorus(TP),as well as the main elements of sediment extracts in Dianchi Lake.Several strongly reducing substances in sediments,which mainly originated from anaerobic decomposition of primary producer residues,were responsible for the lower redox potential.In a range of -400 to 200 mV raising the redox potential of sediments decreased TP and SRP in interstitial water.Redox potentials exceeding 320 mV caused increases in TP,whereas SRP maintained a relatively constant minimum level.The concentrations of Al,Fe, Ca^(2+),Mg^(2+),K^+,Na^+ and S in interstitial water were also related to the redox potential of sediments,suggesting that the mechanism for redox potential to regulate the concentration of phosphorus in interstitial water was complex. | LI Qing-Man ZHANG Wen WANG Xing-Xiang ZHOU Yi-Yong YANG Hao JI Guo-Liang | 2007 | Pedosphere2007,17,6: | 34 |
| 20 | Hypoxic preconditioning stimulates angiogenesis in ischemic penumbra after acute cerebral infarction显示文摘Previous studies have demonstrated the protective effect of hypoxic preconditioning on acute cerebral infarction,but the mechanisms underlying this protection remain unclear.To investigate the protective mechanisms of hypoxic preconditioning in relation to its effects on angiogenesis,we induced a photochemical model of cerebral infarction in an inbred line of mice(BALB/c).Mice were then exposed to hypoxic preconditioning 30 minutes prior to model establishment.Results showed significantly increased vascular endothelial growth factor and CD31 expression in the ischemic penumbra at 24 and 72 hours post infarction,mainly in neurons and vascular endothelial cells.Hypoxic preconditioning increased vascular endothelial growth factor and CD31 expression in the ischemic penumbra and the expression of vascular endothelial growth factor was positively related to that of CD31.Moreover,hypoxic preconditioning reduced the infarct volume and improved neurological function in mice.These findings indicate that the protective role of hypoxic preconditioning in acute cerebral infarction may possibly be due to an increase in expression of vascular endothelial growth factor and CD31 in the ischemic penumbra,which promoted angiogenesis. | Sijie Li Yanbo Zhang Guo Shao Mingfeng Yang Jingzhong Niu Guowei Lv Xunming Ji | 2013 | Neural Regeneration Research2013,8,31: | 31 |