检索结果-南通市图书馆

Effects of slope gradient on runoff from bare-fallow purple soil in China under natural rainfall conditions

Journal of Mountain Science 2018年第4期15卷 738-751页

作者： KOMATSU Yoshitaka KATO Hiroaki ZHU Bo WANG Tao YANG Fan rakwal rand.ep ONDA Yuichi Graduate School of Life and Environmental Sciences University of Tsukuba Center for Research in Isotopes and Environmental Dynamics University of Tsukuba Institute of Mountain Hazards and Environment Chinese Academy of Sciences Faculty of Health and Sport Sciences University of Tsukuba

Purple soil is highly susceptible for overland flow and surface erosion, therefore understanding surface runoff and soil erosion processes in the purple soil region are important to mitigate flooding and erosion hazards. Slope angle is an important parameter that affects the magnitude of runoff and thus surface erosion in hilly landscapes or bare land area. However, the effect of slope on runoff generation remains unclear in many different soils including Chinese purple soil. The aim of this study was to investigate the relationship between different slope gradients and surface runoff for bare-fallow purple soil, using 5 m × 1.5 m experimental plots under natural rainfall conditions. Four experimental plots(10°, 16°, 20° and 26°) were established in theYanting Agro-ecological Experimental Station of Chinese Academy of Science in central Sichuan Basin. The plot was equipped with water storage tank to monitor water level change. Field monitoring from July 1 to October 31, 2012 observed 42 rainfall events which produced surface runoff from the experimental plots. These water level changes were converted to runoff. The representative eight rainfall events were selected for further analysis, the relationship between slope and runoff coefficient were determined using ANOVA, F-test, and z-score analysis. The results indicated a strong correlation between rainfall and runoff in cumulative amount basis. The mean value of the measured runoff coefficient for four experimental plots was around 0.1. However, no statistically significant relationship was found between slope and runoff coefficient. We reviewed the relationship between slope and runoff in many previous studiesand calculated z-score to compare with our experimental results. The results of z-score analysis indicated that both positive and negative effects of slope on runoff coefficient were obtained, however a moderate gradient(16°-20° in this study) could be a threshold of runoff generation for many different soils

关键词： Surface runoff Slope gradient Natural rainfall Purple soil Runoff plot

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hsp90 and ECM29 Are Important to Maintain the Integrity of Mammalian 26S Proteasome

引用

Advances in Biological Chemistry 2015年第7期5卷 255-265页

作者： Jean-Rene Q. Acquah Kousuke Haratake rand.ep rakwal Heiichiro Udono Tomoki Chiba Graduate School of Life and Environmental Sciences University of Tsukuba Ibaraki Japan Organization for Educational Initiatives University of Tsukuba Ibaraki Japan Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan

The proteasome is a protease complex composed of a core particle (CP) and regulatory particles (RPs) that bind to both ends of the CP. ECM29 is a protein that associates with the proteasome and is involved in the maintenance and regulation of the proteasome assembly. However, ECM29 deficient mice can form functional proteasome. In this paper we sought to identify the mechanisms and/or proteins that help and allow the maintenance of the proteasome activity in the absence of ECM29. We analyzed the proteasome components of ECM29-deficient mice and identified Hsp90 as a protein associated with the proteasome. Furthermore, the inhibition of Hsp90 led to a partial disassembly of the proteasome only in ECM29-deficient cells. Those findings attest to the importance of Hsp90 for the maintenance of the proteasome integrity in the absence of ECM29.

关键词： Mammalian Proteasome ECM29 Hsp90 Proteasome Structure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

DNA microarray unravels rapid changes in transcriptome of MK-801 treated rat brain

引用

World Journal of Biological Chemistry 2015年第4期6卷 389-408页

作者： Yuka Kobayashi Sofya P Kulikova Junko Shibato rand.ep rakwal Hiroyuki Satoh Didier Pinault Yoshinori Masuo Department of Biomolecular Science Faculty of ScienceToho University Health Technology Research Center National Institute of Advanced Industrial Science and Technology INSERM U1114 Neuro-psychologie Cognitive et Physiopathologie de la SchizophrénieFMTS (Fédération de Médecine Translationnelle de Strasbourg)Faculté de MédecineUniversité de Strasbourg Department of Anatomy School of MedicineShowa University Laboratory of Exercise Biochemistry and Neuroendrocrinology Institute of Health and Sport SciencesUniversity of Tsukuba Global Research Center for Innovative Life Science Peptide Drug InnovationSchool of Pharmacy and Pharmaceutical SciencesHoshi University Organization for Educational Initiatives University of Tsukuba Faculty of Health and Sport Sciences and Tsukuba International Academy for Sport Studies University of Tsukuba Laboratory of Neuroscience Department of BiologyFaculty of ScienceToho University

AIM:To investigate the impact of MK-801 on gene expression patterns genome wide in rat brain regions. METHODS:Rats were treated with an intraperitoneal injection of MK-801 [0.08(low-dose) and 0.16(highdose) mg/kg] or NaC l(vehicle control). In a first series of experiment,the frontoparietal electrocorticogram was recorded 15 min before and 60 min after injection. In a second series of experiments,the whole brain of each animal was rapidly removed at 40 min post-injection,and different regions were separated:amygdala,cerebral cortex,hippocampus,hypothalamus,midbrain and ventral striatum on ice followed by DNA microarray(4 × 44 K whole rat genome chip) ***:Spectral analysis revealed that a single systemic injection of MK-801 significantly and selectively augmented the power of baseline gamma frequency(30-80 Hz) oscillations in the frontoparietal electroencephalogram. DNA microarray analysis showed the largest number(up- and down- regulations) of gene expressions in the cerebral cortex(378),midbrain(376),hippocampus(375),ventral striatum(353),amygdala(301),and hypothalamus(201) under low-dose(0.08 mg/kg) of MK-801. Under high-dose(0.16 mg/kg),ventral striatum(811) showed the largest number of gene expression changes. Gene expression changes were functionally categorized to reveal expression of genes and function varies with each brain ***:Acute MK-801 treatment increases synchrony of baseline gamma oscillations,and causes very early changes in gene expressions in six individual rat brain regions,a first report.

关键词： Dizocilpine Dye-swap Gene expression Microarray MK

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：