|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Correlations Between Foliar Stable Carbon Isotope Composition and Environmental Factors in Desert Plant Reaumuria soongorica (Pall.) Maxim.显示文摘Leaves of 407 individuals of Reaumuria soongorica (Pall.) Maxim. collected from the major distribution areas were measured to investigate the distribution characteristics of the stable carbon isotope in this desert plant, as well as correlations between δ13C values and environmental factors. Results showed that δ13C values in R. soongorica ranged from-22.77‰. to-29.85‰. and that the mean δ13C value (-26.52‰)was higher than a previously reported δ13C value for a different desert ecosystem. This indicates that R.soongorica belongs to the C3 photosynthetic pathway and has higher water use efficiency than other species. The correlations between δ13C values and environmental factors demonstrated that the foliar δ13C values in R. soongorica increased significantly with decreasing mean annual precipitation and mean relative humidity, and decreased with decreasing duration of sunshine and evaporation. The spatial distribution trend of δ13C values in R. soongorica was not obvious and there was no significant correlation between the δ13C values and mean annual temperature. We conclude that different distribution trends in δ13C values for R. soongorica were likely caused by stomatal limitation rather than by nutrient-related changes in photosynthetic efficiency and that precipitation played an important role in the wide distribution range of R.soongorica. This pattern of δ13C values for R. soongorica reinforced that it is a super-xerophil in terms of its adaptive strategies to a desert environment. | Jian-Ying MA Tuo CHEN Wei-Ya QIANG Gang WANG | 2005 | Journal of Integrative Plant Biology2005，47，9： | 42 |
| 2 | The pathological role of ferroptosis in ischemia/reperfusion-related injury显示文摘Ischemia/reperfusion(I/R) is a pathological process that occurs in numerous organs throughout the human body, and it is frequently associated with severe cellular damage and death. Recently it has emerged that ferroptosis, a new form of regulated cell death that is caused by iron-dependent lipid peroxidation, plays a significantly detrimental role in many I/R models. In this review, we aim to revise the pathological process of I/R and then explore the molecular pathogenesis of ferroptosis. Furthermore,we aim to evaluate the role that ferroptosis plays in I/R, providing evidence to support the targeting of ferroptosis in the I/R pathway may present as a therapeutic intervention to alleviate ischemia/reperfusion injury(IRI) associated cell damage and death. | Hong-Fa Yan Qing-Zhang Tuo Qiao-Zhi Yin Peng Lei | 2020 | Zoological Research2020，41，3： | 39 |
| 3 | Study of time-domain digital pulse shaping algorithms for nuclear signals显示文摘With the development on high-speed integrated circuit,fast high resolution sampling ADC and digital signal processors are replacing analog shaping amplifier circuit.This paper firstly presents the numerical analysis and simulation on R-C shaping circuit model and C-R shaping circuit model.Mathematic models are established based on 1st order digital differential method and Kirchhoff Current Law in time domain,and a simulation and error evaluation experiment on an ideal digital signal are carried out with Excel VBA.A digital shaping test for a semiconductor X-ray detector in real time is also presented.Then a numerical analysis for Sallen-Key(S-K) low-pass filter circuit model is implemented based on the analysis of digital R-C and digital C-R shaping methods.By applying the 2nd order non-homogeneous differential equation,the authors implement a digital Gaussian filter model for a standard exponential-decaying signal and a nuclear pulse signal.Finally,computer simulations and experimental tests are carried out and the results show the possibility of the digital pulse processing algorithms. | ZHOU Jianbin ZHOU Wei LEI Jiarong TUO Xianguo ZHU Xing LIU Yi | 2012 | Nuclear Science and Techniques2012，23，3： | 34 |
| 4 | The parallel 3D magnetotelluric forward modeling algorithm显示文摘3D 磁电机的工作量碲的向前当模特儿的算法那么大传统的连续算法花费一极其大计算时间。然而,向前为算法建模的 3D 能在频率域处理数据,它对平行计算很合适。与 MPI 并且基于 3D 磁电机的流动的分析的优点碲的连续前面的算法,我们建议平行计算的想法并且使用它。三个理论模型被测试,实行效率处于不同状况被比较。结果显示向前为计算建模的平行 3D 是正确的,效率极大地被改进。这个方法对大尺寸合适地球物理的计算。 | Tan Handong Tong Tuo Lin Changhong | 2006 | Applied Geophysics2006，3，4： | 27 |
| 5 | Physiological Responses of Limonium aureum Seeds to Ultra-drying显示文摘Limonium aureum (L.) 的种子希尔,与硅石胶化在一只干燥集装箱从 8.92% 被弄干到 2.88%moisture 内容。在以后极端弄干种子被加速( 50 deg C , 1 个月),并且一些生理的索引包括电的传导性,脱氢酶活动,超级氧化物 dismutase (草皮),过氧化物酶(邮政部门), glu-tathionereductase ( GR ), ascorbate 过氧化物酶( APX ),过氧化氢酶(猫)( MDA ),不稳定的醛和 malondialdehyde 被测试。结果显示那脱氢酶,邮政部门,草皮, GR, APX 和极端干燥的种子的猫活动比控制种子高,当不稳定的醛和 malondialdehydewere 比对照组降低时。结果建议那极端弄干为维持 L 的活力是有益的。在高水平的 aureum 种子。因此, L。aureum 种子能被存储 underultra 干燥的条件。 | Yi Li Hu-Yuan Feng Tuo Chen Xiao-Ming Yang Li-Zhe An | 2007 | Journal of Integrative Plant Biology2007，49，5： | 22 |
| 6 | RAPD analysis of wild stock of penaeid shrimp (Penaeus chinensis )in Chinese coastal waters of the Huanghai Sea and coastal waters of the Bohai Sea显示文摘Genetic diversity of 32 individuals of P. chinensis in the Chinese coastal waters of the Huanghai and Bobal Seas was detected by RAPD technique. Twenty decamer primers of OPI were used for DNA amplification for each individual. The results showed that: Seventeen primers obtained reproducible fingerprints, and the bands were clear. Thirty--nine of 106 loci detected were polymorphic, amounting to 36. 8 %. Mean genetic distance was 0. 094 1 0. 020 6; 68 markers (63. 2 % of the total) showed stable homogeneity in all of the 32 individuals. | Liu Ping Kong Jie Shi Tuo Zhuang Zhimeng Deng Jingyao (l. Huanghai Sea Fisheries Research institute , Chinese Academy of Fishery Sciences, Qingdao 266071, China) | 2000 | Acta Oceanologica Sinica2000，19，1： | 18 |
| 7 | Characteristics of and strategies for patients with severe burn-blast combined injury显示文摘背景严重灼伤强风联合了损害是对为它的高死亡的医疗队的大挑战。这研究的目的是阐明损害并且到现在的临床的特征我们有严重灼伤强风的五个病人联合了的如此的 cases.Methods 的治疗上的临床的经验损害进入我们在 2005 年 6 月 7 日 77 个小时损害以后的医院。灼伤程度从 80% ~ 97%(89.6% 鞪? 亘吗?? | CHAI Jia-ke SHENG Zhi-yong LU Jiang-yang WEN Zhong-guang YANG Hong-ming JIA Xiao-ming LI Li-gen CAO Wei-hong HAO Dai-feng SHEN Chuan-an TUO Xiao-ye LIANG Li-ming WANG Shu-jun | 2007 | Chinese Medical Journal2007，，20： | 17 |
| 8 | Preconditioning and postconditioning reduce hepatic ischemia-reperfusion injury in rats显示文摘BACKGROUND:Ischemia-reperfusion injury occurs when ischemic tissues or organs suffer from further functional and structural damage when their blood supply recovers.This study aimed to contrast the protective effects of ischemic preconditioning and ischemic postconditioning in hepatic ischemia-reperfusion injury in rats.METHODS:Thirty-two healthy male Wistar rats were randomly divided into four groups:sham-operated(SO),ischemia-reperfusion(IR),ischemic preconditioning(I-pre),and ischemic postconditioning(I-post).Blood samples and hepatic tissue were taken from all groups after the experiments.RESULTS:There were significant differences between the IR,I-pre and I-post groups in alanine aminotransferase and aspartate aminotransferase levels,NF-κB p65 expression,apoptosis index and superoxide dismutase activity in hepatic tissue.There were no significant differences between the I-pre and I-post groups.CONCLUSIONS:Ischemic postconditioning and ischemic preconditioning reduce hepatic ischemia-reperfusion injury,but in clinical practice the former is a more appropriate choice. | Zhang, Wan-Xing Yin, Wen Zhang, Lei Wang, Lan-Hui Bao, Lei Tuo, Hong-Fang Zhou, Li-Fang Wang, Chun-Cheng | 2009 | Hepatobiliary & Pancreatic Diseases International2009，8，6： | 16 |
| 9 | Adipose-derived mesenchymal stem cell transplantation promotes adult neurogenesis in the brains of Alzheimer's disease mice显示文摘In the present study,we transplanted adipose-derived mesenchymal stem cells into the hippocampi of APP/PS1 transgenic Alzheimer’s disease model mice.Immunofluorescence staining revealed that the number of newly generated(BrdU+)cells in the subgranular zone of the dentate gyrus in the hippocampus was significantly higher in Alzheimer’s disease mice after adipose-derived mesenchymal stem cell transplantation,and there was also a significant increase in the number of BrdU+/DCX+neuroblasts in these animals.Adipose-derived mesenchymal stem cell transplantation enhanced neurogenic activity in the subventricular zone as well.Furthermore,adipose-derived mesenchymal stem cell transplantation reduced oxidative stress and alleviated cognitive impairment in the mice.Based on these findings,we propose that adipose-derived mesenchymal stem cell transplantation enhances endogenous neurogenesis in both the subgranular and subventricular zones in APP/PS1 transgenic Alzheimer’s disease mice,thereby facilitating functional recovery. | Yufang Yan Tuo Ma Kai Gong Qiang Ao Xiufang Zhang Yao Gong | 2014 | Neural Regeneration Research2014，9，8： | 16 |
| 10 | Relationship between intestinal microbial dysbiosis and primary liver cancer显示文摘Background: Intestinal microbial dysbiosis is involved in liver disease pathogenesis. However, its role in primary liver cancer(PLC), particularly in hepatocarcinogenesis remains unclear. The present study aimed to study the changes in intestinal flora at various stages of PLC and clarify the relationship between intestinal microbes and PLC. Methods: Twenty-four patients with PLC(PLC group), 24 patients with liver cirrhosis(LC group), and 23 healthy control individuals(HC group) were enrolled from October 2016 to October 2017. Stool specimens of the participants were collected and the genomic DNA of fecal bacteria was isolated. High-throughput pyrosequencing of 16 S r DNA was used to identify differences in gut bacterial diversity among HC, LC, and PLC groups. We also analyzed the relationship between clinical factors and intestinal microorganisms in LC and PLC groups. Results: Diversity of Firmicutes tended to decrease from the HC to LC and PLC groups at the phylum level. Among species, Enterobacter ludwigii displayed an increasing trend in the PLC group, wherein the relative abundance of Enterobacter ludwigii in the PLC group was 100 times greater than that in the HC and LC groups. The ratio of Firmicutes/Bacteroidetes was significantly decreased with the disease progression. In addition, the linear discriminant analysis effect size method indicated that Clostridia were predominant in the gut microbiota of the HC group, whereas Enterococcaceae, Lactobacillales, Bacilli and Gammaproteobacteria may be used as diagnostic markers of PLC. Redundancy analysis showed a correlation between intestinal microbial diversity and clinical factors AST, ALT, and AFP. Veillonella showed a significant positive correlation with AFP in the PLC group, whereas Subdoligranulum showed a negative correlation with AFP. Conclusions: This study indicates that dysbiosis of the gut microbiota might be involved in PLC development and progression. | Lei Zhang Yong-Na Wu Tuo Chen Cheng-Hui Ren Xun Li Guang-Xiu Liu | 2019 | Hepatobiliary & Pancreatic Diseases International2019，18，2： | 16 |
| 11 | Ferroptosis:mechanisms and links with diseases显示文摘Ferroptosis is an iron-dependent cell death,which is different from apoptosis,necrosis,autophagy,and other forms of cell death.The process of feroptotic cell death is defined by the accumulation of lethal lipid species derived from the peroxidation of lipids,which can be prevented by iron chelators(e.g.deferiprone,deferoxamine)and small lipophilic antioxidants(e.g,ferrostatin,liproxstatin).This review summarizes current knowledge about the regulatory mechanism of ferroptosis and its association withseveral pathways,including iron,lipid,and cysteine metabolism.We have further discussed the contribution of ferroptosis to thepathogenesis of several diseases such as cancer,ischemia/reperfusion,and various neurodegenerative diseases(e.g.Alzheimersdisease and Parkinson's disease),and evaluated the therapeutic applications of ferroptosis inhibitors in clinics. | Hong-fa Yan Ting Zou Qing-zhang Tuo Shuo Xu Hua Li Abdel Ali Belaidi Peng Lei | 2021 | Signal Transduction and Targeted Therapy2021，6，3： | 16 |
| 12 | Memory materials and devices:From concept to application显示文摘Memory cells have always been an important element of information technology.With emerging technologies like big data and cloud computing,the scale and complexity of data storage has reached an unprecedented peak with a much higher requirement for memory technology.As is well known,better data storage is mostly achieved by miniaturization.However,as the size of the memory device is reduced,a series of problems,such as drain gate-induced leakage,greatly hinder the performance of memory units.To meet the increasing demands of information technology,novel and high-performance memory is urgently needed.Fortunately,emerging memory technologies are expected to improve memory performance and drive the information revolution.This review will focus on the progress of several emerging memory technologies,including two-dimensional material-based memories,resistance random access memory(RRAM),magnetic random access memory(MRAM),and phasechange random access memory(PCRAM).Advantages,mechanisms,and applications of these diverse memory technologies will be discussed in this review. | Zhenhan Zhang Zongwei Wang Tuo Shi Chong Bi Feng Rao Yimao Cai Qi Liu Huaqiang Wu Peng Zhou | 2020 | InfoMat2020，2，2： | 15 |
| 13 | Relative humidity reconstruction for northwestern China's Altay Mountains using tree-ring δ^(18)O显示文摘Relative humidity is an important factor in water and water vapor feedback cycles.In this study,we established a 222-year annual tree-ring δ^(18)O chronology for Siberian larch(Larix sibirica Ldb.)from the Altay Mountains in northwestern China.Climate response analyses revealed that the relative humidity was the primary factor limiting tree-ring δ^(18)O fractionation.Based on our analysis,tree-ring δ^(18)O can be used to reconstruct the July–August relative humidity based on both a reasonable mechanism of tree-ring δ^(18)O fractionation and a statistically significant regression model.We used this model to reconstruct variations in the July–August relative humidity,and the model explained 47.4% of the total variation in the measured relative humidity data from 1961 to 2011.The relative humidity in the study area increased from 1900 to the 1990s and decreased thereafter.Two regime-shift dry periods were detected during the study period(one from 1817 to 1830 and the other from 2004 to 2011). | Guobao Xu Xiaohong Liu Dahe Qin Tuo Chen Wenzhi Wang Guoju Wu Weizhen Sun Wenling An Xiaomin Zeng | 2014 | Chinese Science Bulletin2014，59，2： | 14 |
| 14 | Bacterial diversity and distribution in the southeast edge of the Tengger Desert and their correlation with soil enzyme activities显示文摘The nature of microbial communities and their relation to enzyme activities in desert soils is a neglected area of investigation. To address this, the bacterial diversity and distribution and soil physico-chemical factors were investigated in the soil crust, the soil beneath the crust and rhizosphere soil at the southeast edge of the Tengger Desert, using the denaturing gradient gel electrophoresis of 16S rRNA genes amplified by the polymerase chain reaction. Phylogenetic analysis of the sequenced DGGE bands revealed a great diversity of bacteria. The Proteobacteria, consisting of the α, β, and γ subdivisions, were clearly the dominant group at all depths and in rhizosphere soil. Analysis of the enzyme activities indicated that the rhizosphere soil of Caragana korshinskii exhibited the highest protease and polyphenol oxidase activities, and in the soil crust there were increased activities of catalase, urease, dehydrogenase and sucrase. The bacterial community abundance closely correlated with soil enzyme activities in different soils. The presence of Cyanobacteria correlated with significant increases in protease, catalase and sucrase in the soil crust, and increased urease in the rhizosphere soil of Artemisia ordosica. The occurrence of Acidobacteria was associated with significant increases in urease, dehydrogenase, and sucrase in the rhizosphere soil of C. korshinski. The presence of γ-Proteobacteria correlated with a significant increase in polyphenol oxidase in the rhizosphere soil of A. ordosica. The study indicated a close relationship between the soil bacterial community and soil enzymes, suggesting the necessity of further investigations into bacterial function in this desert ecosystem. | Wei Zhang Gaosen Zhang Guangxiu Liu Zhibao Dong Tuo Chen Manxiao Zhang Paul J.Dyson Lizhe An | 2012 | Journal of Environmental Sciences2012，24，11： | 14 |
| 15 | Characterization of Nestin-positive stem Leydig cells as a potential source for the treatment of testicular Leydig cell dysfunction显示文摘 | Mei Hua Jiang Bing Cai Ying Tuo Jiancheng Wang Zhi Jun Zang Xiang'an Tu Yong Gao Zhijian Su Weiqiang Li Guilan Li Min Zhang Jianwei Jiao Zi Wan Chunhua Deng Bruce T Lahn Andy Peng Xiang | 2014 | Cell Research2014，24，12： | 14 |
| 16 | Panzhihua Airport Landslide (Oct. 3rd 2009) and an Emergency Monitoring and Warning System Based on the Internet of Things显示文摘Panzhihua city(26°05'-27°21'N,101°08'102°15'E),located in a mountainous area,is one of the large cities in Sichuan province,China.A landslide occurred in the filling body of the eastern part of the Panzhihua airport on October 3,2009(hereafter called the 10.3 landslide).We conducted field survey on the landslide and adopted emergency monitoring and warning models based on the Internet of Things(IoT) to estimate the losses from the disaster and to prevent a secondary disaster from occurring.The results showed that four major features of the airport site had contributed to the landslide,i.e,high altitude,huge amount of filling rocks,deep backfilling and great difficulty of backfilling.The deformation process of the landslide had six stages and the unstable geological structure of high fillings and an earthquake were the main causes of the landslide.We adopted relative displacement sensing technology and Global System for Mobile Communications(GSM) technology to achieve remote,real-time and unattended monitoring of ground cracks in the landslide.The monitoring system,including five extensometers with measuring ranges of 200,450 and 700 mm,was continuously working for 17 months and released 7 warning signals with an average warning time of about 26 hours.At 10 am on 6 December 2009,the system issued a warning and on-site workers were evacuated and equipment protected immediately.At 2:20 pm on 7 December,a medium-scale collapse occurred at the No.5 monitoring site,which justified the alarm and proved the reliability and efficiency of the monitoring system. | WANG Hong-hui TUO Xian-guo ZHANG Gui-yu PENG Feng-ling | 2013 | Journal of Mountain Science2013，10，5： | 13 |
| 17 | Effects of velvet antler polypeptide on sexual behavior and testosterone synthesis in aging male mice显示文摘有低浆液睾丸激素层次的 Twenty-four-month-old 男 C57BL/6 老鼠是被使用为在性功能和睾丸激素合成上检验丝绒鹿角多肽(VAP ) 的效果的一个迟了发作的性腺机能减退(LOH ) 动物模型。这些鼠标每天在 100, 200,或 300 mg kg −1 身体重量的剂量由每日的 gavage 收到了 VAP 5 个连续星期(n = 10 个鼠标每剂量) 。控制动物(n = 10 ) 收到了车辆的一样的基于重量的体积。在浆液和睾丸的空隙的织物的性行为和睾丸激素层次在 VAP 的最后管理以后被测量。而且,调查 VAP 怎么在 vivo 影响性行为和睾丸激素合成的机制, steroidogenic 的表示尖锐规章的蛋白质(星),细胞色素 P450 胆固醇方面链劈开酶( P450scc ),并且 3 β ; -hydroxysteroid 脱氢酶( 3 β ;在 Leydig 房间的-HSD)被染色的 immunofluorescence 和量的即时 PCR 也测量。作为结果, VAP 在这些变老的雄的鼠标的性函数生产了重要改进。浆液睾丸激素水平和 intratesticular 睾丸激素(ITT ) 集中也在对待 VAP 的组增加了。星, P450scc,和 3 β 的表示; -HSD 也被发现与控制组相比在对待 VAP 的组被提高。我们的结果建议 VAP 在在老化男性鼠标改进性功能是有效的。性功能上的丝绒鹿角的效果由于睾丸激素合成的几限制率的酶的增加的表示(星, P450scc,和 3 β在 vivo 的睾丸激素合成的 -HSD) 和下列提升。 | Zhi-Jun Zang Hong-Feng Tang Ying Tuo Wei-Jie Xing Su-Yun Ji Yong Gao Chun-Hua Deng | 2016 | Asian Journal of Andrology2016，18，4： | 13 |
| 18 | In vitro chondrogenesis of the goat bone marrow mesenchymal stem cells directed by chondrocytes in monolayer and 3-dimetional indirect co-culture system显示文摘背景软骨损害为内在的新生有一个很差的能力。为使用的软骨修理的基于房间的治疗策略区分了骨头髓间充质的干细胞(BMSC ) 然而,是软骨的修理的一条有希望的途径。这研究被瞄准在 Transwell 合作文化系统和 poly-laetide-co-glycolide (PLGA ) scaffolds.Methods 探索山羊 BMSC 的 chondrogenic 潜力 BMSC 从山羊被孤立肠骨的冠当 chondrocytes 从山羊的家被获得时上次肋骨的软骨。在 Transwell 合作文化系统,与 chondrocytes co 有教养的 BMSC 作为组 A 被设计,而山羊与 chondrogenic 媒介导致的 BMSC 是组 B。组 A 和 B 是试验性的组,当仅仅包含了 BMSC 的组 C 是控制组时。在 PLGA 脚手架合作文化系统, BMSC 被播种进 PLGA 脚手架,它在 24 井板中被推迟,并且控制组被 chondrocytes 的存在或缺席在 24 井板的底部建立。染色的 Toluidine 蓝色,染色的 Alcian 蓝色,骨胶原 immunofluoresence ,骨胶原免疫化学的染色,骨胶原,骨胶原, COL2a Q-PCR 和 osteopontin Q-PCR 被用来检验 chondrogenic 条件以及 chondrogenic 和从山羊骨头髓的aspirates 孤立的 osteogenic genes.Results 房间的表情很快增殖了并且在经过 4 获得了干细胞的特征。然而, chondrocytes 的区别不在经过 3 是明显的。从染色的 Toluidine 蓝色的结果,骨胶原 immunofluoresence 和 PCR 在 Transwell 合作文化系统和 PLGA 脚手架显示出 BMSC 的转变到 chondrocytes。尽管软骨基因表达式在 chondrogenesis 组和合作文化系统被升级, osteopontin 基因表达式,代表 osteogenic 水平,也是 Transwell 合作文化系统和 PLGA 脚手架合作文化系统能支持的 up-regulated.Conclusions 山羊的 BMSC 的 chondrogenic 区别,当在 Transwell 合作文化系统的起来调整的 osteopontin 基因表示暗示 BMSC 的 osteogenic 潜力时。 | LI Jian-wei GUO Xiao-lei HE Chun-la TUO Yong-hua WANG Zhao WEN Jun JIN Dan | 2011 | Chinese Medical Journal2011，，19： | 13 |
| 19 | Relationship Between Serum DNA Replication, Clinicopathological Characteristics and Prognosis of Hepatitis B Virus-associated Glomerulonephritis with Severe Proteinuria by Lamivudine Plus Adefovir Dipivoxil Combination Therapy显示文摘Objective To explore the relationship between HBV DNA and the clinical manifestations, pathological types, injury severity, and prognosis with HBV-GN. Methods 102 patients with HBV-GN were divided into 3 groups, according to the serum titer of the HBV DNA. 24-h urine protein excretion, and other parameters were measured. Renal biopsy were performed. The association between HBV DNA and the pathological stage of membranous nephropathy was analyzed in 78 patients with HBV-MN. 24-h urine protein excretion was used for the evaluation of the prognosis, and the relationship between HBV DNA and prognosis were analyzed. Results Several findings were demonstrated with the increase of serum HBV DNA: 24-h urine protein excretion, plasma cholesterol, and triglycerides increased significantly(P<0.05), while the plasma level of albumin decreased significantly(P<0.05); The changes of serum creatinine, C3 and C4 were found but no statistical significance. Glomerular deposition of HBVAg increased, and the pathological injury was more severe. The clinical remission rate was lower in the high replication group after treatment as compared with the low replication group(P<0.01). Conclusion With the increase of serum HBV DNA, the urine protein excretion and the kidney injury were more severe, and the clinical remission rate was decreased. | JIANG Wei LIU Tuo DONG Hui XU Yan LIU Li Qiu GUAN Guang Ju LIU Xiang Chun | 2015 | Biomedical and Environmental Sciences2015，28，3： | 13 |
| 20 | Effect of Root Architecture on Structural Stability and Erodibility of Topsoils during Concentrated Flow in Hilly Loess Plateau显示文摘Traditional vegetation techniques for the control of concentrated flow erosion are widely recognized, whereas only a few studies have experimentally investigated the impacts of belowground roots on the erodibility of topsoils in semi-arid areas. To quantify the effects of root architectures on soil erodibility and its relevant structural properties, simulated flow experiments were conducted at six-week intervals from 18 July to 20 October in 2012 in the hilly Loess Plateau. Five treatments were: 1) bare(control), 2) purple alfalfa(Medicago sativa), representing tap roots(T), 3) switchgrass(Panicum virgatum), representing fibrous roots(F), 4) purple alfalfa and switchgrass, representing both tap and fibrous roots(T + F), and 5) natural recovery(N). For each treatment, soil structural properties and root characteristics were measured at an interval of six weeks. Soil anti-scouribility was calculated. Results showed that grass planting slightly reduced soil bulk density, but increased soil aggregate content by 19.1%, 10.6%, 28.5%, and 41.2% in the treatments T, F, T + F, and N, respectively. Soil shear strength(cohesion and angle of internal friction(φ)) significantly increased after the grass was planted. As roots grew, soil cohesion increased by 115.2%–135.5%, while soil disintegration rate decreased by 39.0%–58.1% in the 21 th week compared with the recorded value in the 9th week. Meanwhile, root density and root surface area density increased by 64.0%–104.7% and 75.9%–157.1%, respectively. No significant differences in soil anti-scouribility were observed between the treatments of T and F or of T + F and N, but the treatments of T + F and N performed more effectively than T or F treatment alone in retarding concentrated flow. Soil aggregation and root surface-area density explained the observed soil anti-scouribility during concentrated flow well for the different treatments. This result proved that the restoration of natural vegetation might be the most appropriate strategy in soil reinforcement in the hilly Loess Plateau. | LI Qiang LIU Guobin ZHANG Zheng TUO Dengfeng XU Mingxiang | 2015 | Chinese Geographical Science2015，25，6： | 13 |
您所在的机构暂未开通此部分的功能，请联系管理员