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“世高”药液浸果防治沙田柚黑斑病试验初报 被引量:3
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作者 龚玉源 梁文伟 +3 位作者 张祖健 何伟萍 卢东 罗祖汉 《广西植保》 2004年第3期6-8,共3页
沙田柚黑斑病是我县沙田柚生产中的一种常发性病害 ,用常规的喷药法防治效果差 ,改用世高药液浸果的施药方法 ,防效达 90 %以上 ,防治效果显著。
关键词 “世高”药液浸果 防治 沙田柚 黑斑病 试验
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世高防治梨黑星病试验示范
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作者 王志龙 王西玲 +2 位作者 张林森 栾东珍 冯存良 《西北园艺(果树)》 2003年第4期12-12,共1页
《(2001-2002)中国城市发展报告》作出预测,未来50年,中国的城市化率会从现在的37%提高到75%以上。报告提出要用50年左右的时间,全面超出世界中等发达国家的城市化水平。
关键词 “世高” 防治 黑星病 试验
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The Study on the Heredity and Parental Correlation of the Oil Content of F_5 Generation at High-oil Content Soybean 被引量:2
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作者 孟凡钢 富健 +5 位作者 王新风 马巍 于志晶 姜兆生 彭辉 王艳霞 《Agricultural Science & Technology》 CAS 2011年第1期93-95,共3页
[Objective]This paper aims to study the heredity and parental correlation of the oil content of the beginning of the generation at highoil content soybean.[Methods]Seven high yield or high-oil content soybean are sele... [Objective]This paper aims to study the heredity and parental correlation of the oil content of the beginning of the generation at highoil content soybean.[Methods]Seven high yield or high-oil content soybean are selected and eight crosses are made according to the NCII design.[Results]The variation of oil content in F5 relates with the difference between parents.The more the differences between both parents have,the more variations of the oil content of F5 become.When the oil content of both parents are high,and the maturating time of them are very different,the probability of high-oil plant in F5 derived from these cross are high.The oil content of F5 generation has negative correlation with the different between both parents and has positive correlation with the oil content of male parent and significant positive correlation with the oil content of female parent and mid-parent.[Conclusions]This study result provide reference for the seedling of High-oil Content Soybean. 展开更多
关键词 SOYBEAN High-oil The F5 generation HEREDITY China
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Coral Reef and High Sea Level at Luhuitou, Hainan Island during the Holocene 被引量:2
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作者 黄德银 施祺 张叶春 《Marine Science Bulletin》 CAS 2007年第2期61-70,共10页
According to the field survey and ^14C dating at Luhuitou, southern Hainan Island, a subsiding area, the authors conclude the high sea level history recorded by coral reef in the Holocene. At least 4 sea level high-st... According to the field survey and ^14C dating at Luhuitou, southern Hainan Island, a subsiding area, the authors conclude the high sea level history recorded by coral reef in the Holocene. At least 4 sea level high-stands can be identified from the distribution of coral reef ages: 7300 - 6000 cal.aBP, 4800 - 4700 cal.aBP, 4300 - 4200 cal.aBP and 3100 - 2900 cal.aBP. The highest sea level occurred around 7300 - 6700 cal.aBP, and biological-morphological zones took their shape during the stage. The later coral reefs developed in ponds, depressions, and developed outwards on both sides of Luhuitou peninsula. The modern coral reefs are developing in out reef flat and reef-front slope. Moreover, the time of high sea levels in the northern South China Sea recorded by coral reefs in the Luhuitou peninsula can link up with that in other parts of South China Sea. That means the high sea levels in the South China Sea during the Holocene, which are relative to the warming climate, have the global background. 展开更多
关键词 coral reef high sea level Luihuitou HOLOCENE
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Millennial-centennial Scales Climate Changes of Holocene Indicated by Magnetic Susceptibility of High-resolution Section in Salawusu River Valley, China 被引量:20
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作者 LU Yingxia LI Baosheng +4 位作者 WEN Xiaohao QIU Shifan WANG Fengnian NIU Dongfeng LI Zhiwen 《Chinese Geographical Science》 SCIE CSCD 2010年第3期243-251,共9页
The upmost segment (Holocene series) of the Milanggouwan stratigraphic section (MGS 1) in the Salawusu River valley shows 11 sedimentary cycles of dune sands and fluvio-lacustrine facies, or dune sands and paleoso... The upmost segment (Holocene series) of the Milanggouwan stratigraphic section (MGS 1) in the Salawusu River valley shows 11 sedimentary cycles of dune sands and fluvio-lacustrine facies, or dune sands and paleosols. The analysis of the magnetic susceptibility of this segment suggests that there are 11 magnetic susceptibility cycles with the value alternating from low to high, in which the layers of the dune sands correspond to the lower value of the magnetic susceptibility and the layers of fluvio-lacustrine facies and paleosols correspond to the higher peaks. The study reveals that the low and high magnetic susceptibility values indicate the climate dominated by cold-arid winter monsoon and warm-humid summer monsoon of East Asia, respectively, and the study area has experienced at least 22 times of milleunial-centennial scales climate alternation from the cold-arid to the warm-humid during the Holocene. In terms of the time and the climate nature, the variations basically correspond to those of the North Atlantic and some records of cold-warm changes in China as well. They might be caused by the alternation of winter and summer monsoons in the Mu Us Desert induced by global climate fluctuations in the Holocene. 展开更多
关键词 MGS1 segment magnetic susceptibility millennial-centennial scales climate changes HOLOCENE Salawusu River valley
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A New High-resolution Late Glacial-Holocene Climatic Record from Eastern Nanling Mountains in South China 被引量:3
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作者 XUE Jibin ZHONG Wei +3 位作者 ZHENG Yanming MA Qiaohong CAI Ying OUYANG Jun 《Chinese Geographical Science》 SCIE CSCD 2009年第3期274-282,共9页
A 350-cm-long sediment core sequence from Dahu Swamp situated in the eastern Nanling Mountains was selected for high-resolution paleoclimatic reconstruction since the Late Glacial period. The multi-proxy records of th... A 350-cm-long sediment core sequence from Dahu Swamp situated in the eastern Nanling Mountains was selected for high-resolution paleoclimatic reconstruction since the Late Glacial period. The multi-proxy records of this paper reveal several evidently dry and cold events that may coincide with the Oldest Dryas, the Older Dryas, the Younger Dryas in the late deglacial period. Two relatively wetter and warmer phases occurred in ca. 15,000-14,400 cal yr B.P. and 13,500-12,800 cal yr B.P. respectively may correspond to the Boiling and Allerod warming events. The Younger Dryas event (ca. 12,800-11,500 cal yr B.P.) revealed by multi-proxies was characterized by relatively colder and drier climate. A warmer and wetter climate, occurred in ca. 10,000~5000 cal yr B.P., was consistent with the Holoeene Optimum, which coincided with the maximum Northern Hemisphere insolation. The "8.2kyr cool event" and even the "8.8kyr cool event" were indicated as well from our sediment core. A dry mid-Holocene period (ca. 60000 3000 cal yr B.P.) indicated by multi-proxies does not follow the traditional concept of the wet mid-Holocene conditions observed in other regions in China. 展开更多
关键词 Late Glacial period HOLOCENE climatic record Dahu Swamp South China
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Zircon U-Pb age,geochemical and Nd isotopic data of Middle Jurassic high-Mg dioritic dike in Liaodong Peninsula,NE China 被引量:3
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作者 LI Zhuang PEI Fuping MENG En 《Global Geology》 2014年第3期143-154,共12页
Zircon LA-ICP-MS U-Pb age, geochemical and Nd isotopic data are presented for a newly recognized high-Mg dioritic dike from Haicheng, Liaodong Peninsula, NE China, to constrain its petrogenesis. The zircons from the h... Zircon LA-ICP-MS U-Pb age, geochemical and Nd isotopic data are presented for a newly recognized high-Mg dioritic dike from Haicheng, Liaodong Peninsula, NE China, to constrain its petrogenesis. The zircons from the high-Mg diorite exhibit striped absorption and oscillatory growth zoning in the cathodoluminescence (CL) images, and have high Th/U ratios (0. 05-0.9), indicating a magma origin. Zircon LA-ICP-MS U-Pb dating indicates that 206pb/238U ages of 12 spots of zircons are between 167 Ma and 178 Ma, yielding a weighted mean 206pb/238U age of 172 + 2 Ma (MSWD =4. 1 ), which represents the forming age of the high-Mg dioritic dike, i. e. Middle Jurassic. Geochemically, the samples have SiO2 =55.4-60. 6 wt. % , Na20 =2. 2-2.76 wt. % , K20 = 1.32-2. 02 wt. % and (Na2O + K2O) =3.82--4. 47 wt. %, belonging to sub-alkaline series and displaying a calc-alkaline evolutionary trend. They are characterized by high MgO (4. 75-6.85 wt. % ), Mg# (55-61), Cr(130-262 ppm), Ni(63-130 ppm), Sr(568-857 ppm), and Ba(484-1 130 ppm) contents, with geochemical features analogous to those of high-Mg adakites. They show variable end (t) values ( - 1.3 to - 3.9) , with a weighted value of - 2. 7, which plot intermediately between the field of the ancient continental crust and the depleted mantle source, indicating that both the lower crust and mantle source are necessary for the generation of the parent magma of the Haicheng high-Mg diorites. The Haicheng high-Mg dioritic dike in the Liaodong Peninsula and the Jurassic magmatism in the eastern North China Craton formed under a continental crustal thickening setting that may be related to subduction of the Paleo-Pacific oceanic plate. 展开更多
关键词 Liaodong Peninsula high-Mg diorite zircon U-Pb age GEOCHEMICAL Nd isotope
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Time for the world to move beyond the percutaneous endoscopic gastrostomy 被引量:2
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作者 Ah San Pang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第23期2877-2878,共2页
Percutaneous endoscopic gastrostomy (PEG) is a proven feeding tube,just as the nasogastric tube is proven to be able to deliver enteral nutrition.For long-term use,both patient and caregiver want neither.What is desir... Percutaneous endoscopic gastrostomy (PEG) is a proven feeding tube,just as the nasogastric tube is proven to be able to deliver enteral nutrition.For long-term use,both patient and caregiver want neither.What is desired is the LOOPPEG? 3G tube,more secure than the PEG,and less risky to change than the nasogastric tube.Future clinical research should focus on this high-comfort low-risk tube. 展开更多
关键词 Tube feeding Enteral nutrition DYSPHAGIA STROKE
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Numerical simulation and preliminary analysis on ocean waves during Typhoon Nesat in South China Sea and adjacent areas 被引量:3
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作者 王际朝 张杰 杨俊钢 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2014年第3期665-680,共16页
Using the wave model WAVEWATCH III(WW3), we simulated the generation and propagation of typhoon waves in the South China Sea and adjacent areas during the passage of typhoon Nesat(2011). In the domain 100°–145&#... Using the wave model WAVEWATCH III(WW3), we simulated the generation and propagation of typhoon waves in the South China Sea and adjacent areas during the passage of typhoon Nesat(2011). In the domain 100°–145°E and 0°–35°N, the model was forced by the cross-calibrated multi-platform(CCMP) wind fi elds of September 15 to October 5, 2011. We then validated the simulation results against wave radar data observed from an oil platform and altimeter data from the Jason-2 satellite. The simulated waves were characterized by fi ve points along track using the Spectrum Integration Method(SIM) and the Spectrum Partitioning Method(SPM), by which wind sea and swell components of the 1D and 2D wave spectra are separated. There was reasonable agreement between the model results and observations, although the WW3 wave model may underestimate swell wave height. Signifi cant wave heights are large along the typhoon track and are noticeably greater on the right of the track than on the left. Swells from the east are largely unable to enter the South China Sea because of the obstruction due to the Philippine Islands. During the initial stage and later period of the typhoon, swells at the fi ve points were generated by the propagation of waves that were created by typhoons Haitang and Nalgae. Of the two methods, the 2D SPM method is more accurate than the 1D SIM which overestimates the separation frequency under low winds, but the SIM method is more convenient because it does not require wind speed and wave direction. When the typhoon left the area, the wind sea fractions decreased rapidly. Under similar wind conditions, the points located in the South China Sea are affected less than those points situated in the open sea because of the infl uence of the complex internal topography of the South China Sea. The results reveal the characteristic wind sea and swell features of the South China Sea and adjacent areas in response to typhoon Nesat, and provide a reference for swell forecasting and offshore structural designs. 展开更多
关键词 TYPHOON WAVEWATCH III (WW3) cross-calibrated multi-platform (CCMP) South China Sea significant wave height SWELL
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China’s Economic Growth and High-Quality Development:2020-2035 被引量:9
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作者 Liu Wei Chen Yanbin 《China Economist》 2021年第1期2-17,共16页
The time period between 2020 and 2035 is vital for China to achieve its second centennial goal.During this period,China must avoid the middle-income trap and achieve socialist modernization.To accomplish this goal,Chi... The time period between 2020 and 2035 is vital for China to achieve its second centennial goal.During this period,China must avoid the middle-income trap and achieve socialist modernization.To accomplish this goal,China must maintain a certain pace of economic growth and strive to double its real GDP per capita by 2035.However,by the current growth trajectory,China’s average economic growth rate is expected to stay at approximately 3.8%over the period between 2020-2035.This makes the GDP per capita growth target hard to achieve.Even when in a high-quality development stage,China should speed up economic growth while enhancing growth quality.Speed and quality are interdependent rather than contradictory with each other.To ramp up economic growth potentials,China must proceed with market-oriented reforms and shift economic growth drivers.To improve economic growth quality,household consumption should be increased to unleash China’s full potential,not only as the factory floor of the world but also one of world’s biggest markets,i.e.“dual circulations.”With appropriate policy response,China’s economy will be poised to achieve the goal of doubling real GDP per capita by 2035,marking a large stride in its economic aggregate and urban and rural household per capita incomes. 展开更多
关键词 economic growth growth potentials high-quality development one of world’s biggest markets dual circulations
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On the Unusual Holocene Carbonate Sediment in Lake Nam Co,Central Tibet 被引量:3
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作者 LI Minghui KANG Shichang +5 位作者 ZHU Liping WANG Feiyue WANG Junbo YI Chaolu FANG Xiaomin XIE Manping 《Journal of Mountain Science》 SCIE CSCD 2009年第4期346-353,共8页
In lacustrine sediments,aragonite is a widespread mineral,whereas monohydrocalcite is a rare carbonate mineral. In the cold and high-attitude Xizang (Tibetan) Plateau,where aragonite has been commonly found in lacustr... In lacustrine sediments,aragonite is a widespread mineral,whereas monohydrocalcite is a rare carbonate mineral. In the cold and high-attitude Xizang (Tibetan) Plateau,where aragonite has been commonly found in lacustrine sediments,there is no aragonite,but low-Mg calcite,monohydrocalcite and trace dolomite. The lake receives solutes primarily from surface runoffs and remains fairly constant water chemistry for a long time. The total CaCO3 percentage in sediments could be controlled by evaporation and inflow of detrital materials. The absence of aragonite is unusual when compared to other lacustrine sediments from the Tibetan Plateau. This could be due to low Ca/Mg ratio,low salinity,low Mg and Ca concentration. Monohydrocalcite might precipitate from the lake water mediated by biological activities. Low-Mg calcite originated from minor ostracoda shell and the precipitation of lake water with biological activities. 展开更多
关键词 Carbonate minerals Lacustrine sediments Environment change Nam Co TIBET
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Vegetation Feedback at the Mid-Pliocene 被引量:2
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作者 JIANG Da-Bang 《Atmospheric and Oceanic Science Letters》 CSCD 2013年第5期320-323,共4页
A global atmospheric general circulation model and an asynchronously coupled global atmosphere-biome model are used to simulate vegetation feedback at the mid-Pliocene approximately 3.3 to 3.0 million years ago.For th... A global atmospheric general circulation model and an asynchronously coupled global atmosphere-biome model are used to simulate vegetation feedback at the mid-Pliocene approximately 3.3 to 3.0 million years ago.For that period,the simulated vegetation differed from present conditions at 62% of the global ice-free land surface.Vegetation feedback had little overall impact on the global climate of the mid-Pliocene.At the regional scale,however,the interactive vegetation led to statistically significant increases in annual temperature over Greenland,the high latitudes of North America,the mid-high latitudes of eastern Eurasia,and westem Tibet,and reductions in most of the land areas at low latitudes,owing to vegetation-induced changes in surface albedo. 展开更多
关键词 mid-Pliocene vegetation feedback MODEL
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Charged Randall-Sundrum Braneworld Type Ⅱ with Higher Order Curvature Corrections from Superstring Arguments and Dominated by Quintessence
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作者 EL-NABULSI Ahmad Rami 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第5期869-881,共13页
We discuss a new class of RSII braneworld cosmology exhibiting accelerated expansion and dominated by quintessence. It is explicitly demonstrated that the universe expansion history (transition from inflation to dece... We discuss a new class of RSII braneworld cosmology exhibiting accelerated expansion and dominated by quintessence. It is explicitly demonstrated that the universe expansion history (transition from inflation to deceleration epoch to acceleration and effective quintessence era) may naturally occur in such unified theory for some classes of inverse scalar potentials. Besides a decaying effective cosmological constant, the model incorporates an increasing black hole mass, an increasing Maxwellian electrical charge with cosmic time and a time-dependent brahe tension. The cosmological model exhibits several features of cosmological and astrophysical interest for both the early and late universe consistent with recent observations, in particular the ones concerned with the gravitational constants, black holes masses and charges and variation of the gauge coupling parameters with cosmic time. One interesting mark of the constructed model concerns the fact that a black hole mass surrounded by quintessence energy may increase with time even if the horizon disappears. 展开更多
关键词 brane world RSII cosmology higher order curvature corrections black hole black strings effective cosmological constant Maxwellian charge QUINTESSENCE accelerated expansion
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Economic Development and Small Businesses in Japan
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作者 Katsuhiko Hirasawa Pei Xiong +1 位作者 Yutaka Takakubo JinYu 《Journal of Modern Accounting and Auditing》 2018年第4期189-203,共15页
Japan’s economy lost most of its industrial production force as a result of World War II. However, from 1955 onwards, Japan has achieved rapid economic growth, joining the group of the world’s most developed countri... Japan’s economy lost most of its industrial production force as a result of World War II. However, from 1955 onwards, Japan has achieved rapid economic growth, joining the group of the world’s most developed countries by the early 1970s. The period from 1955 to the early 1970s is generally regarded as a period of High Economic Growth. There are various opinions regarding the factors that enabled Japan to attain such high economic growth, referred to as the Economic Miracle. It can be said that Japan’s post-war economic development was the result of advancements in technological innovation on the basis of financial assistance from the United States, which established Japan’s position in the world economy, loans from the bank, and the introduction of technology from abroad. Needless to say, the “high growth of post-war Japanese capitalism has not been achieved only by giant companies alone. On the contrary, without small businesses, especially in their roles as subcontractors, it would have been impossible to achieve such high growth, which has drawn attention internationally” (Nomura, 1981, p. 126). The purpose of this presentation is to make clear the role of small businesses in the process of economic development. 展开更多
关键词 economic development SUBCONTRACTOR INNOVATION small and medium-sized enterprises (SMEs)
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Impact of gender on outcomes after transcatheter aortic valve implantation
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作者 Nooraldaem Yousif Slayman Obeid +4 位作者 Ronald Binder Andrea Denegri Mohammady Shahin Christian Templin Thomas F Luscher 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2018年第6期394-400,共7页
Backgound The influence of gender on clinical outcomes following transcatheter aortic valve implantation (TAVI) was considerably discrepant in previous studies. We aimed to investigate the impact of gender in our re... Backgound The influence of gender on clinical outcomes following transcatheter aortic valve implantation (TAVI) was considerably discrepant in previous studies. We aimed to investigate the impact of gender in our registry. Methods The study is a retrospective observational analysis of a prospectively designed cohort (546 consecutive patients treated at the University Hospital Zurich who were enrolled in Swiss TAVI Cohort from May 2008 to April 2014). The Study took place in University Heart Centre at University Hospital Zurich, Switzerland. Results Both genders were equally represented with 51.5 % (n = 281) of the populations being females, who were significantly older and had a more pronounced history of hypertension (P 〈 0.001 ). Males on the other hand showed a higher incidence of diabetes (P = 0.004), coronary artery disease (P 〈 0.001), chronic obstructive pulmonary disease (P 〈 0.001) and renal failure requiring renal replacement therapy (P = 0.018). Patients were followed up for a median of 391 days with a 100% complete follow-up at one year. The primary outcome (all-cause mortality) occurred in 6.8% (n = 37) and 15% (n = 82) of patients at 30 days and one year, respectively. The 30-day all-cause mortality outcome did not significantly differ between females (7.5%) and males (6.0%) (P = 0.619), but one year all-cause mortality occurred significantly more in males than in females (18.7% vs. 11.7%, P 〈 0.037). Conclusion After TAVI implantation for severe aortic stenosis, males have a less favorable long-term (one year) mortality outcome than females. 展开更多
关键词 Aortic stenosis Aortic valve GENDER Transcatheter aortic valve implantation
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Middle Holocene warm period and sea level high in coastal areas,North China 被引量:1
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作者 孟广兰 韩有松 王少青 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2005年第2期252-258,共7页
Relevant geological, geographical, archaeological data were collected to study the characteristics of middle Holocene warm period and sea level high on North China coast. Middle Holocene climate and sea level change o... Relevant geological, geographical, archaeological data were collected to study the characteristics of middle Holocene warm period and sea level high on North China coast. Middle Holocene climate and sea level change on North China coast were correlated to warm marine environment events in about 8–3 ka B.P. The sea level in about 8 ka B.P. was higher than present mean sea level, then fluctuated for 5 000 years and after that it became even in 3 ka B.P. The highest sea level occurred in about 6–5 ka B.P.; the maximum was about 2–3 m and minimum was about 1–2 m. 展开更多
关键词 warm period sea level high middle Holocene North China coast
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Geochemistry and tectonic significance of Early Cretaceous granites in Highland 1248 of Daxing'anling 被引量:1
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作者 YANG Naifeng YANG Liting WANG Chunguang 《Global Geology》 2014年第2期86-98,共13页
The Early Cretaceous granitic complex in Highland 1248 of Daxing'anling successively consists of intruded granodiorite,monzonite granite and syenite granite. Through test analysis on the major,trace and rare earth... The Early Cretaceous granitic complex in Highland 1248 of Daxing'anling successively consists of intruded granodiorite,monzonite granite and syenite granite. Through test analysis on the major,trace and rare earth elements of the intrusive complex,this study focuses on the source characteristics and tectonic environment of the original magma of intrusive complex. The results show that the intrusive rocks in Highland 1248 are meta-aluminous-peraluminous rocks in calc-alkaline series with homologous characteristics in δEu negative anomalies; the complex is enriched in LILE( Rb,Cs and K) and depleted in HFSE( lanthanide,Sc,Y,U,Nb and Ta),displaying the geochemical characteristics of I-type granites in active continental-margin subduction zones. The complex also has the characteristics of granites after the collision of plate with rich aluminum and high potassium,but significantly depleted Nb,Ta,Ti,P and other elements,i. e. in the orogenic evolutionary stage. The zircon U-Pb SHRIMP isotopic apparent age of the complex in Highland 1248 is 140. 0--141. 0Ma,and the formation time is in Early Cretaceous. 展开更多
关键词 complex rock mass GEOCHEMISTRY tectonic setting Daxing'anling
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Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South of Datong Basin in Shanxi Province
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作者 Jiang Wali, Xie Xinsheng, Wang Huanzhen, Feng Xiying and Zhang KangfuInstitute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China 《Earthquake Research in China》 2003年第3期206-219,共14页
Our field investigation indicates that the northern piedmont fault of the Hengshan Mountain has dislocated proluvial fan and terrace I of the gully mouth on the northern border of the Hengshan Mountain. Stratigraphic ... Our field investigation indicates that the northern piedmont fault of the Hengshan Mountain has dislocated proluvial fan and terrace I of the gully mouth on the northern border of the Hengshan Mountain. Stratigraphic age data indicates that the surface layer in the middle and rear part of the proluvial fan and on the terrace I of the gully mouth on the mountain border consists of sediments of about 5200~6800a B.P. The Hezhuang and Niucaoyu trenches excavated in the front of Hengshan Mountain revealed that 3 paleoseismic events have occurred along the northern piedmont fault of Hengshan Mountain since the early Holocene. The 3 paleoseismic events occurred in 2260±190~4370±150a BP, nearly 5628±150a BP, and 8083±250~8430±720a BP, respectively, and their recurrence interval is 2313a,2628a and 2471a on average. The coseismic vertical displacement produced by these events is 1 0~3 0m. The elapsed time of the latest movement along the fault has exceeded the recurrence interval of these paleoearthquakes. Thus, there exists the possibility of strong earthquake occurrence along the fault from now onward, so the fault is in need of observation. 展开更多
关键词 TRENCHING PALEOEARTHQUAKE HOLOCENE Northern Hengshan piedmont fault
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Sequence palaeogeography and coal accumulation of inland faulting basin: an example from late Triassic Yangtze platform of China 被引量:3
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作者 LU Jing SHAO Long-yi +3 位作者 YANG Min-fang WANG Hao QING Kang-yang WANG Wei-chao 《Journal of Coal Science & Engineering(China)》 2012年第2期163-171,共9页
To unveil formation mechanism of key sequence boundaries of inland faulting basin and coal accumulation charac- teristics of coal seams in isochrohal stratigraphic framework, sequence stratigraphy, palaeogeographic re... To unveil formation mechanism of key sequence boundaries of inland faulting basin and coal accumulation charac- teristics of coal seams in isochrohal stratigraphic framework, sequence stratigraphy, palaeogeographic recovery and other methods were used to research the sequence stratigraphy and coal accumulation in the example of Banding Basn in the west margin of Yangtze Platform, and the authors advanced a coal accumulation model of Faulting basin on the basis of accommo- dation space changes in the background of palaeogeography of sequence framework. The results show that: normal lacustrine regression and forced lacustrine regression are the main driving forces for the formation of sequence boundaries of Faulting ba- sin; basement subsidence is the main source of accommodation space of Faulting basin; and subsidence disequilibrium is the main cause for the difference in generation rate of accommodation space of Faulting basin. Coal accumulation in Faulting basin is obviously controlled by accommodation space changes in sequence framework and basin evolution. As Faulting basin evolves into depression basin, both subsidence rate of basin basement and generation rate of accommodation space decrease vertically, it appears as a progradational reverse-graded sedimentary sequence, coal accumulation in secondary sequence framework intensifies first and then weakens, and coal accumulation at the middle stage of highstand system tract is the best. During steady rifting period, minable coal seams were mostly developed in initial lacustrine flooding surface of fourth-order sequence and at the middle-late period of highstand system tract, and coal accumulation center lay in palaeogeographic unit of delta plain with moderate available accommodation space. During shrinking period, minable coal seams gradually migrated to the maximum lacustrine flooding surface and coal accumulation center lay in palaeographical unit of lacustrine with large available accommodation space. 展开更多
关键词 sequence stratigraphy PALAEOGEOGRAPHY coal accumulation faulting fasin normal lacustrine regression forced lacustrine regression
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China's Industrial Competitiveness and Evolving Trends on the World Market--- Analysis Based on Commodities Export Data
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作者 金碚 李鹏飞 廖建辉 《China Economist》 2013年第5期4-14,共11页
On the basis of classification of technology content for export goods', this' paper employs the latest trade statistics to examine the situation and evolving trend of China's industrial international competitivenes... On the basis of classification of technology content for export goods', this' paper employs the latest trade statistics to examine the situation and evolving trend of China's industrial international competitiveness. Results indicate that." (1) ranked by the order of low-, medium- and high-technology content, international competitiveness of China's industrial manufactured products is in a U-shaped distribution pattern; (2) distance between China's export advantage products and products with potentials is relatively small, which provides favorable micro-basis for steady transformation of export structure; (3) medium- and high-technology manufactured products including machinery and transport equipment will lead the upgrade of China's export," and (4) countries in south Europe, transitional countries of the Central and Eastern Europe, and lndia will challenge China's leading position in low-technology products; China will compete with advanced countries of Europe in the area of medium-technology manufactured products and needs to catch up with and overtake the United States, and the developed economies in Europe and East Asia in the area of high-technology manufactured products. In order to enhance China's industrial international competitiveness, the government should pay great attention to the issue of the lack of competitiveness and low product density of medium-technology manufactured products, objectively view the dual effect of labor-intensive manufactured products in the upgrade of China's export structure, timely optimize policy portfolio for high-technology industries and give the highest priority to climbing up the value chain. 展开更多
关键词 EXPORT COMPETITIVENESS product density
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