期刊文献+
共找到57篇文章
< 1 2 3 >
每页显示 20 50 100
Geometry and 3D seismic characterisation of post-rift normal faults in the Pearl River Mouth Basin,northern South China Sea
1
作者 Yuanhang Liu Jinwei Gao +2 位作者 Wanli Chen Jiliang Wang Umair Khan 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2024年第4期25-39,共15页
Based on high-resolution 3D seismic data acquired in the Pearl(Zhujiang)River Mouth Basin of the northern South China Sea,this study investigated the geometry,spatial extension,and throw distribution of the post-rift ... Based on high-resolution 3D seismic data acquired in the Pearl(Zhujiang)River Mouth Basin of the northern South China Sea,this study investigated the geometry,spatial extension,and throw distribution of the post-rift normal fault through detailed seismic interpretation and fault modeling.A total of 289 post-rift normal faults were identified in the study area and can be classified into four types:(1)isolated normal faults above the carbonate platform;(2)isolated normal faults cutting through the carbonate platform;(3)conjugate normal faults,and(4)connecting normal faults.Throw distribution analysis on the fault planes show that the vertical throw profiles of most normal fault exhibit flat-topped profiles.Isolated normal faults above the carbonate platform exhibit roughly concentric ellipses with maximum throw zones in the central section whereas the normal faults cutting through the carbonate platform miss the lowermost section due to the chaotic seismic reflections in the interior of the carbonate platform.The vertical throws of conjugate normal faults anomalously decrease toward their intersection region on the fault plane whereas the connecting normal faults present two maximum throw zones in the central section of the fault plane.According to the symmetric elliptical distribution model of fault throw,an estimation was made indicating that normal faults cutting through the carbonate platform extended downward between-1308 s and-1780 s(two-way travel time)in depth and may not penetrate the entire Liuhua carbonate platform.Moreover,it is observed that the distribution of karst caves on the top of the carbonate platform disaccord with those of hydrocarbon reservoirs and the post-rift normal faults cutting through the carbonate platform in the study area.We propose that these karst caves formed most probably by corrosive fluids derived from magmatic activities during the Dongsha event,rather than pore waters or hydrocarbons. 展开更多
关键词 Post-rift normal faults fault throw Karst caves Corrosive fluids Pearl River Mouth Basin South China Sea
下载PDF
A Bail-Out Plan Throws outfor SMEs
2
作者 Li Zhen 《China's Foreign Trade》 2008年第Z3期32-,共1页
From the beginning of 2008,together with the appreciation of the RMB and the rising costs of labor and raw materials,tight monetary policies have contributed to the fi- nancial plight of small and medium-sized enterpr... From the beginning of 2008,together with the appreciation of the RMB and the rising costs of labor and raw materials,tight monetary policies have contributed to the fi- nancial plight of small and medium-sized enterprises(SMEs),especially those heav- ily reliant on exports. 展开更多
关键词 A Bail-out Plan throws outfor SMEs
下载PDF
高空抛物、坠物民事案件中公安机关的提前介入职责
3
作者 刘佳欣 刘彩红 郭荷昕 《漯河职业技术学院学报》 2024年第2期60-64,共5页
《中华人民共和国民法典》对于高空抛物、坠物的民事责任有较为明确的规定和分配,特别是创设了国家公安机关对于高空抛物、坠物侵权的调查权,明确了公安机关对于高空抛物、坠物在不存在行政或者刑事违法的情况下仍需参与和介入,突破了... 《中华人民共和国民法典》对于高空抛物、坠物的民事责任有较为明确的规定和分配,特别是创设了国家公安机关对于高空抛物、坠物侵权的调查权,明确了公安机关对于高空抛物、坠物在不存在行政或者刑事违法的情况下仍需参与和介入,突破了过去高空抛物、坠物依靠私力救济的局限性。从高空抛物这一概念出发,探究民法典对于高空抛物、坠物民事责任的划分,深入探索该类案件中的公安机关提前介入机制。 展开更多
关键词 高空抛物、坠物 民事案件 民事责任 公安机关提前介入机制
下载PDF
Seismic damage zone and width-throw scaling along the strike-slip faults in the Ordovician carbonates in the Tarim Basin 被引量:8
4
作者 De-Bo Ma Guang-Hui Wu +3 位作者 Nicola Scarselli Xin-Sheng Luo Jian-Fa Han Zhi-Yong Chen 《Petroleum Science》 SCIE CAS CSCD 2019年第4期752-762,共11页
Understanding the scaling relation of damage zone width with displacement of faults is important for predicting subsurface faulting mechanisms and fluid flow processes. The understanding of this scaling relationship i... Understanding the scaling relation of damage zone width with displacement of faults is important for predicting subsurface faulting mechanisms and fluid flow processes. The understanding of this scaling relationship is influenced by the accuracy of the methods and types of data utilized to investigate faults. In this study, seismic reflection data are used to investigate the throw and damage zone width of five strike-slip faults a ecting Ordovician carbonates of the Tarim intracraton basin,NW China. The results indicate that fault slips with a throw less than 200 m had formed wide damage zones up to 3000 m in width. Also, damage zone width is found to have both a positive correlation and a power-law relation with throw of two orders of magnitude, with a ratio of these values varying in a range of 2–15. The relationship between throw and damage zone width is not a simple power-law and changes its slope from small to larger size faults. The results indicate that throw scales well with damage zone width for the studied faults, and hence these can be used to predict fault geometries in the Tarim Basin. The study of the wide carbonate damage zones presented here provides new insights into scaling of large-size faults, which involve multiple faulting stages. 展开更多
关键词 Fault damage zone Carbonate throw SCALING Evolution Tarim Basin
下载PDF
Posterior shoulder instability in the athletic population: Variations in assessment, clinical outcomes, and return to sport 被引量:1
5
作者 Jeffrey M De Long James P Bradley 《World Journal of Orthopedics》 2015年第11期927-934,共8页
Posterior instability of the shoulder is becoming an increasingly recognized shoulder injury in the athletic population. Diagnostic elements, such as etiology, directionality, and degree of instability are essential f... Posterior instability of the shoulder is becoming an increasingly recognized shoulder injury in the athletic population. Diagnostic elements, such as etiology, directionality, and degree of instability are essential factors to assess in the unstable athletic shoulder. Concomitant injuries and associated pathologic lesions continue to be a significant challenge in the surgical management of posterior shoulder instability. Return to sport and previous level of play is ultimately the goal for every committed athlete and surgeon, thus subpopulations of athletes should be recognized as distinct entities requiring unique diagnostic, functional outcome measures, and surgical approaches. 展开更多
关键词 POSTERIOR SHOULDER INSTABILITY OVERHEAD throwING ATHLETES Contact ATHLETES
下载PDF
throw的含义及用法举隅
6
作者 赵红梅 《川北教育学院学报》 2002年第3期68-69,共2页
关键词 英语教学 throw 含义 用法
下载PDF
Sediment generation and soil mound denudation in areas of high-density tree throw along a river valley in the Jura Mountains, Switzerland
7
作者 Philip GREENWOOD Jan BAUER Nikolaus J KUHN 《Journal of Mountain Science》 SCIE CSCD 2021年第2期377-391,共15页
A preliminary field-based investigation was undertaken in a small(<10 km^(2))river valley located in the mountainous Jura region of northwest Switzerland.The aims of the work were to assess sediment generation and ... A preliminary field-based investigation was undertaken in a small(<10 km^(2))river valley located in the mountainous Jura region of northwest Switzerland.The aims of the work were to assess sediment generation and annual sediment transport rates by tree throw on forested hillslopes,and to document surface hydrology characteristics on four fresh soil mounds associated with recent tree throws over a 24-day monitoring period.For the soil mounds,average sediment recovery ranged from 7.7-28.2 g(dry weight),equivalent to a suspended sediment concentration of 145.2-327.8 g L^(-1),and runoff coefficients ranged from 1.0%-4.2%.Based on a soil bulk density value of 1,044 kg m^(-3),upslope runoff generation areas were denuded by an average 0.14 mm by the end of the 24-day monitoring period,representing an erosion rate equivalent to 2.1 mm yr^(-1).A ca.50 cm high soil mound could therefore feasibly persist for around 200-250 years.For tree throw work,the dimensions of 215 individual tree throws were measured and their locations mapped in 12 separate locations along the river valley representing a cumulative area equivalent to 5.3 ha(av.density,43 per ha).Tree throws generated a total of 20.1 m^(3) of fine-sediment(<2 mm diameter),or the equivalent of 3.8×10^(-4) m^(3) m^(-2).The process of tree throw was originally attributed to two extreme weather events that occurred in west and central Europe in late December 1999.Taking the 18-year period since both storms,this represents an annual sediment transport rate of 2.7×10^(-5) m^(3) m^(-1) yr^(-1).Exploring the relationship with wind on fall direction,65.5%of tree throws(143)generally fell in a downslope direction irrespective of hillslope aspect on which they were located.This infers that individual storms may not have been responsible for the majority of tree throws,but instead,could be associated with root failure.Given the high density of tree throws and their relative maturity(average age 41 years),we hypothesise that once trees attain a certain age in this river valley,their physiognomy(i.e.height,mass and centre of gravity)compromises their ability to remain securely anchored.We tentatively attribute this possibility to the presence of bedrock close to the surface,and to the shallow soil profile overlaying steep hillslopes. 展开更多
关键词 Tree throw Hillslope processes Sediment generation mechanism Sediment transport rate Soil mound Ibach river valley
下载PDF
Kinematic Characteristics Analysis and Parametric Solving of Snow Melting Agent Throwing Mechanism with Variable Crank Length
8
作者 Wenwu Liu Nianli Lu Hongxin Liu 《Journal of Harbin Institute of Technology(New Series)》 CAS 2021年第4期60-66,共7页
Variable crank length cam⁃linkage mechanism has attracted much attention due to its compact overall structure when realizing complex motion laws.According to the special trajectory requirements,the kinematic character... Variable crank length cam⁃linkage mechanism has attracted much attention due to its compact overall structure when realizing complex motion laws.According to the special trajectory requirements,the kinematic characteristics and parameters of the mechanism have been analyzed and solved,which lays foundation for the implementation of the variable crank length snow melting agent throwing mechanism designed in this paper.Based on the trajectory equation of the point,the mathematical model of the throwing mechanism was established,and the theoretical trajectory of the end point of the throwing mechanism was obtained by programming.The parametric modeling and trajectory drawing were carried out by computer aided three⁃dimensional interactive application(CATIA),and the correctness of the mathematical model was verified by comparison.The regional trajectory distribution characteristics of the end points of the throwing mechanism were studied by using the trajectory region location method,and the influence of various parameters on the trajectory was investigated by using the numerical cycle comparison method.The human⁃computer interaction system of snow melting agent throwing mechanism with variable crank length was constructed by using Microsoft Visual Basic(VB)software.Based on the restriction conditions,the optimum combination of structural adjustment parameters and operational parameters suitable for Harbin first⁃class roads was obtained by using orthogonal test table,which provides an effective method to solve the parameters of the variable crank length cam mechanism with smooth impulse trajectory. 展开更多
关键词 throwing mechanism variable crank length cam mechanism mathematical model kinematic characteristics parametric solving
下载PDF
Appearance of Jiangzao 361, a Conventional Early Indica Rice Variety, in Throwing Demonstration Experiment and Its Matching Throwing Technique
9
作者 胡金和 张志英 +4 位作者 祝飞 曾良明 彭裕建 胡玉平 杨小华 《Agricultural Science & Technology》 CAS 2017年第12期2331-2334,共4页
In this paper, the characteristics of Jiangzao 361, as well as its appear- ance in throwing transplanting are introduced, and the high-yielding throwing tech- nique for Jiangzao 361 is summed up. On the basis of the e... In this paper, the characteristics of Jiangzao 361, as well as its appear- ance in throwing transplanting are introduced, and the high-yielding throwing tech- nique for Jiangzao 361 is summed up. On the basis of the experimental demon- stration, the corresponding matching throwing technique is put forward. 展开更多
关键词 Conventional early indica rice Jiangzao 361 throwing technology
下载PDF
Double Band Double-Pulley Repair for Articular Surface Partial Tears of the Supraspinatus in Throwing Athletes: Improving the Transtendon Technique
10
作者 Osvaldo Garcia Martinez Eduard Buess Diosveny Gonzales Hernandez 《Open Journal of Orthopedics》 2012年第4期150-154,共5页
Disabled shoulders of throwing athletes typically present with extended undersurface partial tears of the rotator cuff, which include the posterior supraspinatus and the anterior infraspinatus tendon to a variable ext... Disabled shoulders of throwing athletes typically present with extended undersurface partial tears of the rotator cuff, which include the posterior supraspinatus and the anterior infraspinatus tendon to a variable extent. We propose a modified transtendon repair technique to adequately treat this subset of patients. The repair includes two double-loaded anchors, at the anterior and the posterior end of the tear, respectively. With the help of an angulated penetrator we create a medial and a lateral band of sutures on top of the cuff, producing a broad contact in the tendon-to-bone interface. All the 9 so far operated patients were young men, 7 of them base-ball pitchers, and 5 active in competitive sports. The Constant Score rose from 72 points preoperatively to 99 points at 12 months follow-up. Three of the still active pitchers were able to return to their previous level in sports after one year. The improved footprint contact of our novel repair construct should allow for better healing and, therefore, a higher chance of return to competition. 展开更多
关键词 Partial Tear SUPRASPINATUS Tendon throwING ATHLETE PASTA-Lesion PAINT-Lesion
下载PDF
A Corpus-based Comparative Study of the Semantic Collocations of English and Chinese THROW Verbs
11
作者 李林夕 《海外英语》 2020年第6期94-95,共2页
A verb plays an vital role in a sentence, therefore the study of this perspective attracts numerous scholars. Particularly, corpus-based study has increasing attention in recent years. The present study chooses the TH... A verb plays an vital role in a sentence, therefore the study of this perspective attracts numerous scholars. Particularly, corpus-based study has increasing attention in recent years. The present study chooses the THROW verbs in both English and Chi?nese as the subject. The author applies"collocated"function or"pattern query"in two corpus, then analyzes the distinctions of the semantic collocation of the THROW verbs. The findings show that although these verbs belong to the same categorization in a limit?ed range of the specific histories and cultures, there is no one-to-one corresponding relation of these THROW verbs in translation across the two languages. 展开更多
关键词 throw VERB SEMANTIC COLLOCATION CORPUS-BASED study
下载PDF
Stories of Horror Throws Light on Cruelty of Serfdom in Old Tibet
12
作者 ZHIQING 《The Journal of Human Rights》 2003年第5期39-40,共2页
We are going to tell you some stories that took place in old Tibet, before the Democratic Reform in the late 1950s. about how, for the sole "crime" of being slaves or serfs, people had their limbs amputated,... We are going to tell you some stories that took place in old Tibet, before the Democratic Reform in the late 1950s. about how, for the sole "crime" of being slaves or serfs, people had their limbs amputated, eyes gouged out or noses cut off. These stories of horror might be beyond comprehension of any person with the least sense of human civilization, even though they are real. The system of serfdom practiced in old Tibet featured a combination of civil and 展开更多
关键词 in be on Stories of Horror throws Light on Cruelty of Serfdom in Old Tibet of
下载PDF
Italian Textile Industry: Throw an Embroidered Ball in the Chinese Market
13
作者 Ren Yan 《China Textile》 2009年第4期40-43,共4页
Throwing an embroidered ball is an act of seeking marriage practiced by noble family maidens in ancient China. March 2009, the early spring of Beijing saw Italian textile industry's passion for a close relationshi... Throwing an embroidered ball is an act of seeking marriage practiced by noble family maidens in ancient China. March 2009, the early spring of Beijing saw Italian textile industry's passion for a close relationship with the Chinese market after a global shiver in the freezing economic winter. It is a ball of elegance, quality and sincere cooperation, which is to become larger and more attractive with the stable development of Chinese textile industry and the ever expansion of Chinese consumption market. 展开更多
关键词 throw an Embroidered Ball in the Chinese Market Italian Textile Industry BALL
下载PDF
采用协同搜索策略的算术优化算法 被引量:1
14
作者 付小朋 王勇 冯爱武 《小型微型计算机系统》 CSCD 北大核心 2023年第11期2416-2423,共8页
针对标准算术优化算法(AOA)存在的不足,提出一种新的采用协同搜索策略的算术优化算法(CSSAOA).首先,采用乘法搜索与除法搜索协同并行搜索的策略来增强算法的全局探索能力;其次,采用减法搜索与加法搜索协同进行的策略来增强算法的局部搜... 针对标准算术优化算法(AOA)存在的不足,提出一种新的采用协同搜索策略的算术优化算法(CSSAOA).首先,采用乘法搜索与除法搜索协同并行搜索的策略来增强算法的全局探索能力;其次,采用减法搜索与加法搜索协同进行的策略来增强算法的局部搜索能力;再次,改进数学优化加速函数(MOA),使算法在搜索前期侧重进行全局探索,在搜索后期侧重开展局部开发,加快了算法的全局收敛速度;最后,采用外抛交叉变异策略对当前最优个体实施多样性变异,确保在算法搜索前期不至于吸引过多个体过早聚集到群体当前最优个体的周围,增强了算法搜索跳出局部最优的能力.通过8个基准测试函数和2个典型的工程应用以及CEC2019函数实例测试,实验结果表明了CSSAOA具有更快的全局收敛速度和更高的优化精度,在实际工程优化应用中效率更高. 展开更多
关键词 算术优化算法(AOA) 协同搜索 数学优化加速函数 外抛交叉变异
下载PDF
Developing Recipe from Local Ceramic Raw Materials for Making Crucibles in Ghana
15
作者 Kofi Asante-Kyei Alexander Addae Ahmed Aflo 《Journal of Minerals and Materials Characterization and Engineering》 2023年第4期92-113,共22页
The study experimented with using local ceramic raw materials (white clay, kaolin and silica or quartz) found in AssinFosu in the Central Region of Ghana to manufacture crucibles for melting metals and other precious ... The study experimented with using local ceramic raw materials (white clay, kaolin and silica or quartz) found in AssinFosu in the Central Region of Ghana to manufacture crucibles for melting metals and other precious minerals. Various physical tests were conducted on the materials to arrive at the body compositions. The compositions were also investigated for their elemental components by using X-ray fluorescence (XRF). The results revealed that the composition of Cruc containing 70% of white clay, 20% of kaolin, 8% of quartz and 2% of white grog;sintered at 1500˚C was very successful and therefore used to develop the recipe to manufacture the proposed crucibles. The “throwing” technique was employed to fabricate the crucibles. Test for thermal expansion was conducted for the manufactured crucibles at 1000˚C for thermal shock and microcracking tests. It was found out among others, that the recipe developed had very good physical and chemical properties of alumina silicate refractory materials and was fit for use at any high-temperature application. The study also recommended among others, that the researchers and institutions responsible for clay research such as Ghana Geological Survey Authority (GGSA) and Centre for Scientific and Industrial Research (CSIR) collaborate to improve upon this innovative idea. 展开更多
关键词 White Clay Crucibles COMPOSITIONS throwING KAOLIN QUARTZ
下载PDF
Development and Transition of Rice Planting in China 被引量:12
16
作者 张玉屏 朱德峰 +3 位作者 熊洪 陈惠哲 向镜 林贤青 《Agricultural Science & Technology》 CAS 2012年第6期1270-1276,共7页
[Objective] This paper aimed to clarify the rice planting methods and its supporting technology to be developed in rice producing areas in China. [Method] Evolvement of rice planting methods in rice producing areas in... [Objective] This paper aimed to clarify the rice planting methods and its supporting technology to be developed in rice producing areas in China. [Method] Evolvement of rice planting methods in rice producing areas in China and in representative rice-growth countries abroad, its characteristics, adaptability and key issues were analyzed. [Result] The analysis of development of rice planting method in China and abroad indicated that rice planting method was adapted to rice-based cropping system and ecological environment, and its transition accompanied with social and economic development. With agricultural labor transfer from agriculture to other industries since 1990’s, rice seedling throwing was gradually applied and in recent decades, while direct seeding and machine transplanting were practiced. Now, hand transplanting is still the main rice planting method, adopted in 50% of national rice planting area; seedling throwing, direct seeding and machine transplanting are conducted in 25% , 12% and 13% of the national rice planting area. [Conclusion] Machine transplanting should be a leading rice planting method. Though area covered with machine direct seeding is still small up to now, it can be practiced in some rice growing area due to labor saving and low cost. Leading planting methods and its supporting key technologies are proposed in various rice producing areas in the future. 展开更多
关键词 RICE Planting method Machine transplanting Seedling throwing Direct seeding RATOON
下载PDF
新全球动力学理论与壳幔的形成 被引量:4
17
作者 杨志华 李勇 +1 位作者 苏生瑞 周义 《矿物岩石地球化学通报》 CAS CSCD 2001年第4期238-242,共5页
地壳从地幔中熔融出来是地质学立论的基础 ,也是板块构造运动的基本原因。上述理论阐明不了大陆岩石圈、大陆造山带的组成 ,结构与演化 ,也与当代的基础理论不尽吻合。为此特提出在地球自转速度变化制约下的多层扭动涡旋甩出说———核... 地壳从地幔中熔融出来是地质学立论的基础 ,也是板块构造运动的基本原因。上述理论阐明不了大陆岩石圈、大陆造山带的组成 ,结构与演化 ,也与当代的基础理论不尽吻合。为此特提出在地球自转速度变化制约下的多层扭动涡旋甩出说———核幔壳“风暴”所引发的热核反应是地球发展与演化的唯一的、统一的“动力”来源 ,也是壳幔形成的根本原因。 展开更多
关键词 地幔 地壳 多层扭动涡旋甩出说 核幔壳"风暴" 热核反应
下载PDF
中国大地构造的动力学新理论 被引量:3
18
作者 杨志华 苏生瑞 +1 位作者 李勇 周义 《矿物岩石》 CAS CSCD 北大核心 2001年第3期160-164,共5页
在全球范围内流行的按密度差、温度差建立的地幔对流、拆沉作用和地幔柱(羽 )理论 ,阐明不了中国大陆岩石圈、大陆造山带的组成、结构与演化。从我们对中国秦岭及西部造山带的研究中 ,发现和提出的在地球自转速度变化制约下的多层扭动... 在全球范围内流行的按密度差、温度差建立的地幔对流、拆沉作用和地幔柱(羽 )理论 ,阐明不了中国大陆岩石圈、大陆造山带的组成、结构与演化。从我们对中国秦岭及西部造山带的研究中 ,发现和提出的在地球自转速度变化制约下的多层扭动涡旋甩出说——核幔壳“风暴”所引发的热核反应是地球发展与演化唯一的、统一的“动力”来源 ,是中国大陆岩石圈、大陆造山带形成。 展开更多
关键词 地幔对流 地幔柱理论 地球自转变化 多层扭动涡旋甩出说 核幔壳“风暴” 热核反应 中国大地构造
下载PDF
乳化炸药爆速和抛掷威力的研究 被引量:3
19
作者 成新法 《爆破器材》 CAS 北大核心 1994年第1期1-4,共4页
文章根据工业混合炸药配方设计原则,编制程序优选乳化炸药配方,并进行爆轰参数理论估算,对11种试验配方进行爆速、砂中抛掷威力和水下爆炸能量的测定。结果表明。
关键词 乳化炸药 抛掷威力 爆速 高能材料
下载PDF
自动变速器驻车机构性能分析与研究 被引量:12
20
作者 陈华 陈辛波 +3 位作者 傅灵玲 于闯 罗大国 王瑞平 《拖拉机与农用运输车》 2014年第4期24-26,共3页
驻车机构是自动变速器中能实现可靠驻车的一种安全装置,是变速器中不可缺少的关键机构。以双离合自动变速器驻车机构设计为例,在安全驻车、防自动脱挡、异常驻车、驻车棘爪自动弹出能力以及换挡舒适性等5方面提出了性能要求,并进行了详... 驻车机构是自动变速器中能实现可靠驻车的一种安全装置,是变速器中不可缺少的关键机构。以双离合自动变速器驻车机构设计为例,在安全驻车、防自动脱挡、异常驻车、驻车棘爪自动弹出能力以及换挡舒适性等5方面提出了性能要求,并进行了详细的分析研究,为驻车机构的分析研究提供了一定参考作用。 展开更多
关键词 驻车机构 安全驻车 脱挡 摘挡力 换挡
下载PDF
上一页 1 2 3 下一页 到第
使用帮助 返回顶部