氟的环境化学

氟是环境污染元素。自然界中氟的存在形式。含氟工业。我国有关氟含量的规定。氟的危害。氟的治理。     

创建"民技军用"科技创新平台促进区域经济发展

改革开放以来。我国“军转民”政策取得了丰硕的成果。一方面。一大批军工企业实现了向民品生产的转移。并成为了该民品所属行业的龙头老大。经过近二十年“军转民”的艰苦努力。一大批深受社会欢迎的军工行业的主导民品、支柱民品、优势民品和具有较好规模的第三产业如雨后春笋。蓬勃发展。形成一个军民结合型的国防科技工业的整体新格局。“军转民”政策。使大批军工企业走出困境。走上了新的军民结合的广阔大道。“军转民”政策稳定和锻炼了我国军工技术队伍。发展了我国国防工业。另一方面。一大批军用技术实现了向民用领域的转移。加大了民品的技术含量。促进了民品的技术进步。一大批民企由于采用了军工技术和利用了军工人才。实现了企业内部的产品更新换代，实现了产业升级，使企业获得了新生，获得了巨大的经济效益。“军转民”政策促进了我国科技进步和高新技术的发展。对地方经济、地区经济乃至整个国民经济的发展。起到了巨大的推动作用。“军转民”政策将继续在国防军工发展和国民经济建设中发挥长久的不可替代的作用。     

团队的内部冲突与管理策略

1团队冲突的类型根据团队冲突的主体划分。1)成员与团队之间的冲突。2)团队成员之间的冲突。根据团队冲突的影响因素划分。1)认知性冲突。2)情感性冲突。根据团队冲突的效果划分。1)建设性冲突。2)破坏性冲突。     

不让高科技蒙受羞辱

5月,我走过这美丽的城市。这是个和平的城市。白天,阳光灿烂;夜晚,春风沉醉。人们在编织未来,渴望在那里面装满幸福、快乐、爱情和创造的自由……然而,它今天变了。我看见充满火的眼睛在街道上流动。愤怒像爆米花一样突然膨胀了,充满了城市的每个空间。震耳欲聋的怒吼像炽热的岩浆一样从火山口里喷发出来。这是一个愤怒的城市。这是为什么?我想问。去问蓝天、白云。问路旁如血一样盛开的鲜花。问白塔顶上缭绕不绝的鸽哨。问姑娘们诱人的时装。问在春天花园里唱《莫斯科郊外的晚上》的可爱的小伙子。问在大商场里不知疲倦的顾客。问在电脑旁熬过通宵的博士们。问热情好客又能侃能发牢骚的出租车司机。问从学校闸门放出来的欢快的孩子的潮流。……问我自已。     

肉眼可见的仙女星系

仙女座是秋夜星空的代表星座之一。其中有一个著名的深空天体——仙女星系(M31)。这是在北半球大多数地区能看到的最亮、最大的河外星系。也是天文爱好者最喜欢观测和拍摄的目标之一。它是一个典型的旋涡星系。距离我们大约250万光年。换句话说。我们现在看到的。实际上是它250万年前的样子。在一个晴朗无月的夜晚。避开城市的灯光向它所在的天区望去。凭肉眼就能轻易地看到一个模模糊糊的光斑。用一台小望远镜。我们就能看到它明亮的核心。     

火灾探测器 你安装了吗？

在普通人看来。火灾探测器似乎有些神秘莫测。在宾馆、饭店、商场等公众聚集场所稍加留心。你随处可以看到它的身影。然而我们对时时刻刻监视着火灾的它却常常视而不见。其实。认识火灾探测器。了解火灾探测器。对于我们早期控制火情。减少火灾损失大有裨益。掌握火灾探测器工作和安装的相关知识。对于广大城市居民。尤其是已经安装了火灾探测器等消防设备的单位。能够使火灾探测器更好的发挥作用。更好的保护人民的生命和财产安全。随着社会物质文明的进一步发展。火灾探测器进入寻常百姓家保护生命安全也是大势所趋。     

智能交通

交通是人类社会的一个必要元素，从某种角度看。人类社会的进步就是一部交通发展史。随着科技的不断进步。尤其是工业革命以来。人类的交通事业有了质的飞跃。从而拉近了整个世界的距离。如今。交通不再是一种地理和空间的桎梏。而是成为经济、政治、文化交流的重要媒介。发挥着重要的作用。然而伴随着城市化的步伐。交通的极速发展也给人类带来了环境污染、资源消耗、生态破坏、城市生活质量下降等一系列社会问题。     

你知道吗?

你的手腕到肘的长度就是脚的长度。女人头发的直径是男人的一半。聪明人头发里的锌和铜比普通人的更多一些。世界上用得最多的名字是“穆罕默德”。所有大洲的英文名字的第一个字母和最后一个字母都是一样的。《圣经》是世界上卖得最多的书,也是遭窃最多的书。热水比冷水冻得快。骰子相对的两面点数相加为7。口琴是世上卖得最多的乐器。由于地球引力的关系,最高的山也不会超过15000米。要是在黑屋子里养金鱼,它会慢慢变白。蟋蟀的耳朵长在前腿膝盖的下面。蝴蝶用它们的腿来品味。骆驼奶不会凝固。游得最慢的鱼是海马,它每小时只能游16米。如…     

本刊总目录(总1期——总7期)

序号 题 目 作 者 期号 页码 1 调整我国农业机械高等教育的几点意见 宋亚欣 高良润 21 2 我国农业机械化的回顾与前瞻 吴相渣 11 3 关干发展我国植保机械的若干问题 高良润 19 4 我国衣村能源的利用、开发与节约 吴相e 41 5 改进与发展农用柴油机若干途径的探讨 谭NH 4 12 6 热处理技术的发展趋势和国内简况 周汝霖 4 25 。。___;。。_。I。_。。施钧亮 金树德 7 发展我国喷灌用喷头的探讨 ZZ告 一’”’“116 _。_。。,。;、l。。。/、。。一·。李世英 。。。,l\。;。。;。、;,。。。、,。、,、。。金树德 曹武陵 8 我国轻小型喷灌机具…     

一部《水浒传》为何争论了八十多年?——著名史学家史式教授访谈录

《水浒传》是我国古典小说中的四大名著之一。从北宋末年在说书场上开始萌芽。历经南宋、元代200余年的提炼、修改。成为一连串的水浒故事。明初再由民间文人编纂成书。成书300年来。《水浒传》对中国历史的进程产生了重大影响。多次农民起义都是模仿水浒故事而发动起来的。因此专制王朝斥此书为“诲盗”之书。而屡次查禁。直到辛亥革命以后才全面开禁。但是从五四运动开始。一些研究者又对此书开展了马拉松式的争论。争论的问题包括：作者为谁？主题思想是什么？从成书以来一共出现了多少不同的版本？ 经过了80多年的争论，直到现在。这些问题仍然没有解决。我国著名史学家史式教授今已84岁高龄。他在青年时代曾经参与过《水浒》的研究工作。与老一辈文化界人士多有交往。了解当时的争论情况。他现已接受邀请。重新主持《水浒》的研究工作。笔者特地拜访了他。请他介绍80年来有关《水浒》问题争论的经过。他对这些问题的具体意见，以及今后如何开展研究工作的打算，以飨读者。[编者按]     

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.