美国黑人民权运动剪影

杏1957年,阿肯色州州长福布斯以黑白合校可能危害社会安定为由,调动州国民警卫队阻止9名黑人到该州小石城中心中学人学。9月24日,艾森豪威尔政府派联邦军队护送黑人学十讲人该校。-............... 个林登·约翰逊总统任职期间,通过了一系列民权法案。图为约翰逊签署1965年民权法后,将签字笔赠给马丁·路德·金。美国黑人民权运动剪影~~     

《我的心与他同在——温尼·曼德拉自述》

本书是温尼·曼德拉的自传。温尼·曼德拉是南非著名黑人领袖纳尔逊·曼德拉的妻子,其本人也是南非民权运动的著名领袖,被黑人群众称为“黑人之母”和“黑人精神的化身”。温尼长期以来受到了     

治疗性克隆,患者的福音

糖尿病家族的企盼保罗·诺曼,一位捐献皮肤细胞的志愿者。他的一家人都生活在糖尿病的痛苦中,他本人是重度糖尿病患者,由于遗传原因,他的小女儿也是糖尿病患者。保罗在捐献自己的细胞时,心里充满了希望,他希望人类能克隆自身胚胎成功,使自己全家摆脱疾病的折磨。图为保罗·诺曼和他的小女儿。王韵编译     

腹膜后巨大髓外浆细胞瘤一例报道

1病例患者,男,37岁。因全身疲乏无力、腹胀消瘦3月,曾在当地医院对症治疗效果欠佳。10 d前自己发现腹部肿块就诊,于2004年9月28日入院。查体:贫血貌,腹部膨隆,从剑突至脐下6 cm可触及约18 cm×15 cm的肿块,质地较硬,表面光滑,形态不规则呈分叶状,有轻压痛,无波动感,活动度小,体位变化时肿物移动小。B超检查示:腹主动脉前见一实性低回声图,大小约18·3 cm×5·7 cm×12·2 cm,形态欠规则,边界尚清,内回声不均,不随体位改变移动;腹腔内探及游离液性暗区,深7·4 cm。CT检查示:胰头区可见一大小约10·7 cm×6·7 cm肿块影,边缘不规则,与周围组…     

乙基紫-醋酸丁酯萃取光度法测定微量金

本文采用乙基紫-醋酸丁酯萃取光度法测定微量金。金的含量在2.5—25μg之间,服从比尔定律,表观摩尔吸光系数为1.01×10~(51)·mole~(-1)·cm~(-1)。已用于阳极泥和电镀液中微量金的测定。     

历届联大主席名单

今年是联合国创始40周年。40个春秋寒暑,世界发生了巨变。联合国成员国已由最初的51个增加到目前的159个,特别是广大第三世界国家的加入,使联合国的组成发生了重大变化,带来了新的气象。下面是迄今39届联合国大会历届主席的构成情况: 第一届 1946年保罗—亨利·斯巴克(比利时) 第二届 1947年奥斯瓦尔多·阿拉尼业(巴西) 第三届 1948年 H·V·伊瓦特(澳大利亚) 第四届 1949年卡洛斯·P·罗慕洛(菲律宾) 第五届 1950年纳斯罗拉·安迪让(伊朗) 第六届 1951年路易斯·帕迪利亚·内尔沃(墨西哥) 第七届 1952年莱斯特·B·皮尔逊(加拿大) 第八届1953年维贾雅·拉克希米·潘迪特夫人(印度)     

龙岩师专学报(自然科学版)1983—1990年总目录

(进明;f仁省再而括号^的数字分别丧示卷,瑚利页数)微分方程dd xy=鲁号毫安岩之詈芝毫砉§÷导舅专墨÷鲁号等 在原点近旁的积分曲线的拓扑结构 林井元 (1—2·1)_Fubin i定理的推广 黄重器 (1--2·1 5),“折纸法”的数学原理 卢如模(1--2·2 2)关于概连续函数的两个“定理”辨 黄重器(1--2·6 7>某些数学分析教科书中常见的一些问题 陈建寿(1--2·6 9)蕴函关系与数学命题 赵君大(I--2·7 7)关于多项式教学“面向中学的问题” 陈福元 (1—2·7 4 YPerron积分的新推广 黄重器(2--1·2 3)论欧氏环上的整数值函数 赵君大(2--1·2 7)离散随机过…     

对等意义下由奇系决定特征系的充要条件关于正规核

本文提到的函数,概指实变复值函数,并采用Lebesgue积分和下列符号:k(x,,)((x,,)〔〔a,b]x[a,b〕)示五’核,无’(x,夕)=万匡,x)示k(x,夕)的辅核。任中〔L,,~fb,,。,。,、,.,、」.,二.m_fK甲一I。‘气再一,2甲气,/a沙一‘’丫一l J“Jk·*一丁之、。,二)““,“,d“,k‘’-之、(;,二)甲〔,)口;;{忿、(·,;)丽J;。任意的f(x),g。)〔L’,叫(厂,g)一{之,‘X)g(·)dX为厂(x)和g(x)的内积。,!厂!卜‘,,,)士一〔J言,‘X)、。。〕于一〔l竺},(·)!,,〕十 斗:不相等,一‘:几乎处处相等, 七(x,夕)二k[印‘,必‘;产‘〕表示双重意义,一方面表示L.…     

江西科学1988年总目录

第6＄第1期 ·埋论诵讨· 激子-声子系强耪合理论(一)…………··,……………………………毛辉明 邵金山(1) ·研究报告·贵金属基初次固溶体的固溶度和晶体态电子浓度之间的关系……………………萧功伟(6)贵金属基连续固溶体和晶体态电子浓度之间的关系…··:·,…………………·,…··萧功伟-(13)某些广义逆矩阵的计算公式………………………………………………-………··刘轩黄(工7)摧化瘠红细胞在犬细小病毒血凝和血凝抑制试验中的应用…何顺华 李 兵 刘尧服(23)磁场处理水对肉鸡增重效果的中间试验………………………徐 涤 张虔南 …     

国际点滴

撤职的理由之艾森豪威尔政府的卫生、教育与福利部部长助理、著名黑人简·斯鲍尔丁被撤职了,理由是她拒绝支持政府对黑人的种族隔离与歧视政策.危险的老太太浩美国民主运动的一位老战士、七十一岁的玛丽·克拉托契维尔夫人,最近被美国司法部下令     

Markedness and its Interpretation in Language Use

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

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

低渗透非均质砂岩油藏启动压力梯度研究

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.