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1.
最早在吉安传播马克思主义的不是罗石冰,刘九峰,曾延生,而是袁玉冰,赵醒侬,方志敏,曾天宇,邹努等。吉安第一批共产党员不是宋大勋,郭化非,刘承休,谌光重,而是袁玉冰,罗石冰,曾延生,邹努,来吉安建党的不只是罗石冰一人,还有欧阳洛,艾焕彩,刘家麒,龙超清,李锦云,陈正人,贺铁汉,吉安建党时间不是1923年8月,也不是1925年7-8月,而是1926年1月26日,吉安最早的党组织不是中共吉安支部,而是中共吉安小组。  相似文献   

2.
耕牛髌骨上方固定病,谷称僵筋腿,冷拖腿,弹筋腿等,多目繁多,因地而异,在我国南方各省农区耕牛均有发生,轻者严重影响耕牛劳役,重者完全夹失耕作能力,只好淘汰处理,给广大农户造成极大为严重的经济损失,针地这一病症,笔者从一九六六年起,系统查阅了大量文献资料,分析了该病的发生,发展,诊断,治疗有的关问题,在四川北部的阆中,苍溪,仪陇,南部,剑阁县一带,深入农村,同基层畜牧兽医人员一起,采用外科手术的方法  相似文献   

3.
介绍了用Si(Li)探测器作探头的携带式高分辨合金分析仪的结构原理和实测结果。其仪器的分析范围可覆盖Ag,Cd,Sn,Sb,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Hf,Au,Ta,W,Pb,Bi,Zr,Nb和Mo等元素,采用^109Cd和^55Fe作激发源,由笔记本式计算机与电子插件所组成的计算机多道分析系统,实现数据的采集和显示,元素间干扰效应的修正,合金识别以及牌号查询与合  相似文献   

4.
在高等代数的教学中,学生们的反映是"概念多,论证多,方法多样,内容比较抽象。"因此,有的学生说:"高等代数听懂容易,记住难,使用更难。"我们认真究其根源,关键是对概念的理解不深不透,对定理的论证似懂非懂,定理本质木曾掌握,因而,有时解题论证入手困难,所以,在高等代数的教学过程中,必须设法引导学生学会应用概念,使用定理,进行解题论证,近几年来,我们在教学过程中,结合具体内容,自觉地多举实例,用分析,对比的方法,处理好具体和抽象,特殊与一般这两对矛盾,从而使学生能仔细体会,认真理解,确切掌握概念的内涵及…  相似文献   

5.
当前,全国各地正在大力推进政府信息化建设,涉及到公安,工商,财税,社保,计生,统计等政府工作的方方面面,包括公文流转,政务公开,网上办事,信息共享等内容,随着电子政务的逐步推开,电子政务网络的不断延伸,网络安全问题变得越来越重要。  相似文献   

6.
类锌离子精细结构能级和辐射寿命   总被引:7,自引:2,他引:7  
用全相对论多组态自治场方法,计算了类锌离子Mo XⅢ和Fm LXⅪ的1s,2s,2p_,2p,3s,3p_,3p,3d_,3d,4s,4p_,4p,4d_,4d,4f_,4f,5s,5p_,5p,5d_,5d,5f_,5f,5g_,5g,6s,6p_,6p,6d_,6d,6f_,6f,6g,6g,6h_,6h,7s,7p_,7p7d_,7d轨道的475个精细结构能级和辐射寿命以及各种跃迁参数。能级的计算值和实验值符合得很好。还发现了一些寿命较长的亚稳态能级。  相似文献   

7.
《中国西部科技》2007,(3):F0003-F0003
四川海林投资管理(集团)有限公司是在四川省工商行政管理局注册登记的从事投资分析,项目论证,资产重组,财务审计,资产评估,房地产评估,土地评估,工程审计,招投标代理,项目管理,司法鉴定,安全监控,宽带网络等多种服务的集团性有限责任公司,注册资金1000万元,拥有一大批中高级专业人才,业务遍及全省各地及上海,湖北,海南,重庆,西藏,新疆等省,市,自治区,在业内及客户群中树立了良好的企业形象,其信誉,质量,业绩得到了广泛的赞誉和一致好评。  相似文献   

8.
五代,两宋是中国绘画史上的重要时期,其山水画在空间布局上的巧妙处理,对后世山水画的发展产生了重要的影响,五代,北宋的山水画,侧重于完整地,整体地把握客观对象,以繁复的,“全景式”的构图,显示一种雄浑,博大的气象,南宋山水画,则以少取胜,强调对景物的大胆剪裁,以简约的,“边角式”的布局,营造出一种空灵的,诗一般的氛围。  相似文献   

9.
攀枝花苏铁(Cycas panzhihuaensis L.Zhou,et,S.Y.Y…   总被引:1,自引:0,他引:1  
研究了攀枝花苏铁的生物学特性,结果表明,其根系具二种类型的根:1,向地下生长的直生根,有次生生长,维管射线由异型薄壁细胞组成。2,向地表面生长的珊瑚状根,其中具藻带层,共生藻类属念珠藻属,项圈藻属,小叶片先端不反卷,叶肉分化,具单脉,木质部发育为中始式,气孔为单环型,叶柄,上胚轴的维管束均为外韧型。组成后生木质部的管状分子,除环纹,螺纹管胞外,还有较多的长度缩短,直径增大,末端壁倾斜至垂直的单列,  相似文献   

10.
有机硅乳液的合成最优化研究   总被引:1,自引:0,他引:1  
通过研究加料方式,乳化剂类型及用量,搅拌方式,聚合温度,终止反应方法等因素对产品性能的影响,并用正交试验进一步优化工艺条件,得出八甲基环四硅氧烷(D4)后加,采用的较好的乳化剂B,反应前期高温,搅拌剧烈,后期低温,搅拌温和,低温时终止反应的合成工艺,制得有机硅乳液的分子量高,单体转化率高,无“漂油”现象,耐寒,耐热,机械稳定性均好。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

14.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

15.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

16.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

17.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

18.
19.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

20.
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with  相似文献   

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