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| 1 | Two types of changes in apparent resistivity in earthquake prediction显示文摘Two types of changes in apparent resistivity (AR) have been linked to earthquake occurrences. This paper studies the changes and their causes, in detail with the ultimate purpose of developing and assessing a method of earthquake (EQ) prediction. The AR changes of the first type (CFT) are considered to be precursors related to earthquakes (EQs); these appear mostly in the medium-term period before EQs and in the short-term period preceding EQs. The changes of the second type (CST) are characterized by a turning anomaly of a long-trend AR variation or the drastically descending/ascending anomaly superimposed on such a variation; these appear synchronously in large areas, such as the Chinese mainland, and northern and northwestern China, ect. Their spatio-temporal clusters correspond well to high seismicities in the areas and distant great EQs around the Chinese mainland. Based on the behaviors of the two types of changes, the AR changes observed prior to the Ms8.0 Wenchuan EQ of 2008 are studied. The results show that in the medium-term period before the EQ, noticeable anomalies appeared synchronously at four stations around the Songpan-Ganzi active block, but only weak upward changes were observed in the short-term period preceding the EQ, which caused the prediction of the imminent EQ to fail. | DU XueBin1,2 1Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China 2Lanzhou Base of Earthquake Science Institute, China Earthquake Administration, Lanzhou 730000, China | 2011 | Science China Earth Sciences2011,54,1: | 27 |
| 2 | 表土孢粉模拟的中国生物群区显示文摘根据中国第四纪孢粉数据库提供的 6 41个表土孢粉资料 ,利用孢粉生物群区化方法 ,建立了具有 6 86个孢粉类群、31类植物功能型和 14种生物群区的孢粉生物群区化模型。经过检验 ,该模型在模拟中国生物群区、生物群区垂直分异和水平梯度分析方面均取得理想结果。模型已实现了计算机程序化 ,为重建过去地质历史时期的古生物群区和古气候分析 ,提供客观、准确的模型工具。 | Members of China Quternary Pollen Data Base * | 2001 | Acta Botanica Sinica2001,43,2: | 28 |
| 3 | Catalytic performance of Fe_3O_4-CoO/Al_2O_3 catalyst in ozonation of 2-(2,4-dichlorophenoxy) propionic acid,nitrobenzene and oxalic acid in water显示文摘Fe3O4-CoO/Al2O3 catalyst was prepared by incipient wetness impregnation using Fe(NO3) 3·9H2O and Co(NO3) 2·6H2O as the precursors,and its catalytic performance was investigated in ozonation of 2-(2,4-dichlorophenoxy) propionic acid(2,4-DP) ,nitrobenzene and oxalic acid.The experimental results indicated that Fe3O4-CoO/Al2O3 catalyst enabled an interesting improvement of ozonation eciency during the degradation of each organic pollutant,and the Fe3O4-CoO/Al2O3 catalytic ozonation system followed a radical-type mechanism.The kinetics of ozonation alone and Fe3O4-CoO/Al2O3 catalytic ozonation of three organic pollutants in aqueous solution were discussed under the mere consideration of direct ozone reaction and OH radical reaction to well investigate its performance.In the catalytic ozonation of 2,4-DP,the apparent reaction rate constants(k) were determined to be 1.456×10-2 min-1 for ozonation alone and 4.740×10-2 min-1 for O3/Fe3O4-CoO/Al2O3.And O3/Fe3O4-CoO/Al2O3 had a larger Rct(6.614×10-9) calculated by the relative method than O3 did(1.800×10-9) ,showing O3/Fe3O4-CoO/Al2O3 generated more hydroxyl radical.Similar results were also obtained in the catalytic ozonation of nitrobenzene and oxalic acid.The above results demonstrated that the catalytic performance of Fe3O4-CoO/Al2O3 in ozonation of studied organic substance was universal to a certain degree. | Shaoping Tong,Rui Shi,Hua Zhang,Chunan Ma College of Chemical Engineering and Materials Science,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,Zhejiang University of Technology,Hangzhou 310032,China | 2010 | Journal of Environmental Sciences2010,22,10: | 10 |
| 4 | Analysis of ESTs and gene expression patterns of the posterior silkgland in the fifth instar larvae of silkworm, Bombyx mori L.显示文摘The fibroin gene expression pattern and regulation of the posterior silkgland were studied by means of expressed sequence tags (ESTs) using the first and fifth day larvae of the fifth instar of silkworm, Bombyx mori L (strain: C 108). The results showed that there were 911 repetitive ESTs and 1950 single sequences (Singlets) among total 2861 consentient sequences, which were spliced. 1335 sequences were identified and the other 1526 were unknown. 5560 sequences (55.89%) in the posterior silkgland cell of the silkworm were new ESTs without homology with EST data published by Mita et al. The number of repetitive ESTs and single sequences from the first day larvae of the fifth instar was double more than that of the fifth day of the same instar in the silkworms. The unigenes which were more than 50 in repetitive EST size (contig size) came to only about 0.5% in total consentient sequences. There were significant differences between gene expression frequencies, and expressed genes were related to fibroin synthesis and its secretion and fibroin composition. Comparing the fifth day with the first day of the fifth instar, the genes-expressed quantity of fibroin heavy-chain gene was 18 fold higher, fibroin light-chain gene 9 fold and fibroin P52 gene 8 fold. 508 genes functioned for cellular component and 315 for enzyme after function tracing. These results implied that the gene expression of the first day was mainly for preparation for fibroin synthesis except for the growth of silkgland cells, and the gene expression of the fifth day of the fifth instar was mainly for synthesizing and excreting fibroin. Because the ratio of heavy chain, light chain and p25 of fibroin was not 6:6:1 as theoretically expected, or its special H-chain structure, the H-chain gene was not easy to detect through EST technique. Most of genes among total 2861 consentient sequences functioned for fibroin synthesis and secretion. This suggested the fibroin synthesis and secretion procedure of the posterior silkgland was more complex than the knowledge we have. | ZHONG Boxiong, YU Yingpo, XU Yusong, YU Hong, LU Xingmeng, MIAO Yungen, YANG Jun, XU Hao, HU Songnian & LOU Chengfu College of Animal Sciences, Zhejiang University, Hangzhou 310029, China Hangzhou Huada Gene Research and Development Center, Southern Base of Genomic Information, Chinese Academy of Sciences, Hangzhou 310007, China | 2005 | Science China(Life Sciences)2005,48,1: | 8 |
| 5 | 一种解列车控制问题的新算法显示文摘本文提出一种解列车控制问题的新算法。该算法基于遗传算法、罚函数法和RungaKuta法。 | CHENG JinSong (Dept. of Computer, Anhui University, Hefei AH,230039) In this paper, we present a new algorithm for solving train control problem. The algorithm is based on genetic algorithm, penalty function method and the RungaKutta method. | 1999 | 微机发展1999,9,4: | 4 |
| 6 | Response characteristics of an ascending auditory neuron AN3 and its projections in the brain of the bushcricket Gampsocleis grationsa显示文摘The phonotaxis of bushcrickets demonstrates that they have goodcapability of recognizing conspecific songs and locating the sound source,which bases on complicated auditory mechanisms of the central nervoussystem(CNS).This article describes the response characteristics of AN3,an auditory ascending neuron in the prothoracic ganglion,and its projec-tions within the brain.The AN3,with a quasi-tonic discharge pattern,has high sensitivity,directionality and ability to encode sound intensity.Therefore,it plays an important role in auditory information processingof CNS.Its projections in the brain are mainly concentrated in the lateralzone of the deutencephalon,where synaptically connecting local auditoryinterneurons in the brain. | GAO Panpan and SHEN Jun -Xian(Institute of Biophysics, Academia Sinica, Beijing 100080)The phonotaxis of bushcrickets demonstrates that they have good capability of recognizing conspecific songs and locating the sound source, which bases on complicated auditory mechanisms of the central nervous system (CNS). This article describes the response characteristics of AN3, an auditory ascending neuron in the prothoracic ganglion, and its projections within the brain. The AN3 , with a quasi-tonic discharge pattern, has high sensitivity, directionality and ability to encode sound intensity. Therefore, it plays an important role in auditory information processing of CNS. Its projections in the brain are mainly concentrated in the lateral zone of the deutencephalon, where synaptically connecting local auditory interneurons in the brain. | 1992 | Chinese Journal of Acoustics1992,11,1: | 3 |
| 7 | 提高国家工科化学基地建设效益的探索与实践显示文摘本文介绍了中南大学在提高国家工科基础课程化学教学基地建设效益的过程中所取得的部分经验 ,针对新形势下基地建设存在的普遍性问题 ,进行了分析并提出了解决的办法。这些经验为基地的进一步建设深入提供了思路和借鉴。 | National engineering chemistry talent training base of CSU | 2003 | 现代大学教育2003,19,5: | 2 |
| 8 | The International Registry of Lung Metastases显示文摘 | Long-term results of lung metastasectomy : prognostic analyses based on 5206 cases | 1997 | J Thorac Cardiovasc Surg1997,113,1: | 1 |
| 9 | A new ap- proach to teaching the practice of medicine 显示文摘 | Evidence - Based Medicine Working Group | 1992 | JAMA1992,268,17: | 1 |
| 10 | 264 Statistical Characters显示文摘 | Jianfeng X Zhibo Ch Yun H Efficient Fast ME Predictions and Early termination Strategy Based on H | 2003 | ICICS-PCM2003,1,: | 1 |
| 11 | Prediction of Shear Strength in High-strength Concrete Beams Considering Size Effect显示文摘 | BASE Y H LEE J H YOON Y S | 2006 | Magazine of Concrete Research2006,58,4: | 1 |
| 12 | Comparison of different efficiency criteria for hydrological model assessment 显示文摘 | Krause P Boyle D P Base F | 2005 | Advances in Geosciences2005,5,: | 1 |
| 13 | Carboranethiol-modifiedgold surfaces: A study and comparison of modified cluster andflat surfaces显示文摘 | BASE T BASTL Z PLAZK Z | 2005 | Langmuir2005,21,: | 1 |
| 14 | Evidenceand recommendations for the treatment and prevention of diabetes and related complications显示文摘 | Franz M J Bantle J P based nutrition principles Beebe C A | 2003 | Diabetes Care2003,26,1: | 1 |
| 15 | Synthesis and Characterization of Bis(ether an- hydride)s显示文摘 | Hsiao S H Huang Polyimides based on P C | 1997 | Journal of Polymer Research1997,4,7: | 1 |
| 16 | Tiron complex 显示文摘 | Dong-yuan Wang Yi-bing Zhao Jin-gou Xu Xiang-qun Guo Sensitive determination of nucleotides and polynucleotides based on the fluorescence quenching of the Tb^3+ | 1997 | Fresenius J Anal chem1997,358,: | 1 |
| 17 | Clonogenicity of human leukemic cells protected from cell-lethal agents by heat shock protein70 显示文摘 | Bases R | 2005 | Cell Stess Chaperones2005,10,1: | 1 |
| 18 | Calcium -regulated proteion kinase cas -cades and their transcription factor targets 显示文摘 | Cruzalegui FH Basing H | 2000 | Cell Mol Life Sci2000,57,: | 1 |
| 19 | Infantile hemangiomas with unusually prolonged growth phase: a case se- ties显示文摘 | Brandling-Bennett HA Metry DW Base|ga E | 2008 | Arch Derrnatol2008,144,12: | 1 |
| 20 | Hierar image color appearance mode 显示文摘 | XIAO Jin-sheng LI Wen-hao chical tone mapping based on LIU Guo-xiong | 2014 | IET Computer Vision2014,8,4: | 1 |