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1.
洋洋是个有名的实验迷。这不,今天他拿来一只生鸡蛋,把外壳冲洗干净,用醋酸在鸡蛋壳上画上了自己喜欢的画,然后将鸡蛋放在锅里煮熟了。等洋洋从锅里取出鸡蛋时,蛋壳上什么痕迹也没有了,而剥去蛋壳后,奇迹却出现了:洋洋画在鸡蛋壳上的画,透过蛋壳清晰地映印在蛋清上了(如上图)。  相似文献   

2.
非构思写作学把当代写作学理论拉上了后现代的这条道路上,这条道理的转向为当代写作学带来了方法论上的视角的转变和研究背景的改变、不仅仅强化了写作学研究的哲理性也强化了其操作性的特征,它使得当代写作学在本体论上,实现了平面无序到立体有序,写作理论研究从形而上到形而下,从独语到对话;在方法论上,由逻辑分析方法走向语境分析方法,由思辨方法走向反实在论方法;在认识论上,则从总体性的高台走到了相对性、局域性这一平台。  相似文献   

3.
《广东科技》2007,(5):F0002
2006年,广东民营经济继续保持了良好的发展势头,不但在总量上突破了万亿元大关,而且在工业增加值上首次超过了国企。然而,广东民营经济的进步不仅仅体现在经济增长总量上的成绩,还反映在经济发展质量上的提升。2006年,广东发明专利申请量达到2万余件,稳居全国第一,而这其中绝大部分发明专利来自民营企业的创新,  相似文献   

4.
王直华 《科技潮》2010,(3):48-49
我爱书,也爱读书。碰上一本好书,就像“找到了文学上的爱人”。这引号里的话,是林语堂先生说的。当然,读书不限于寻找文学上的爱人,也可以寻找科学上的爱人、艺术上的爱人。科学文化,人文文化,合起来就是整个人类文化。因此,碰上一本好书,就像“找到了文化上的爱人”。  相似文献   

5.
如果有人问你:教师在课堂上应该站在哪里?你一定会说:这还用问吗?当然是站在讲台上了。都说教师在三尺讲台上默默耕耘,挥洒着青春与汗水。讲台似乎成了教师的专属领地,很多教师上课从不越“雷池”半步,在讲台上俯视学生,滔滔不绝,或讲解或提问,全在三尺讲台上完成。  相似文献   

6.
吕晓磊 《科技信息》2010,(1):112-113
中国残疾人乒乓球队在北京残奥会上表现出了整体优势,在个别级别上拉开了与世界强手的距离,取得的了成功经验。但是新的奥运周期已经开始,为了在伦敦奥运会上继续保持优势,在管理体制和运行机制上进行全面、深入的探讨,认真查找新周期备战的制约因素,为再创佳绩做好准备。  相似文献   

7.
先问你个问题,航母打仗靠什么?嘿,当然是靠甲板上那些威风凛凛的舰载机啦。“呼啦”一声令下,舰载机就像一群群大黄蜂一样从甲板上起飞,满载弹药向敌方发起攻击……这不,看了舰载机在航母上威风凛凛,陆地上的战斗机也眼红了,它也想来航母上体验一番。  相似文献   

8.
太阳系中能量最大的火山并不是在地球上发现的,而是在木星一号卫星Io(伊俄)上。地球和Io是太阳系中仅有的拥有高温的活火山的星体,但Io上的火山却更大,更热,运动也更剧烈。本书包含了从伽利略飞船上得到的最新结果,以及Io上不同尺度和样式的火山活动,并把这些火山和目前地球上的火山做了一个比较。本书提供了关于火山形成和喷发的背景知识,并且定量地解释了如何分析用从太空飞船和望远镜上得到的遥感数据来揭示火山运动过程。  相似文献   

9.
蒋丽光 《遵义科技》2009,37(6):16-19
沼气池建设工作近几年在我区得到扎实开展,沼气池建设在农业生产上的有利作用已越来越被人们了解和应用,并在一定程度上促进了我区农业生产(特别是果蔬)的健康可持续发展,为了使农民更好地了解沼肥的作用,并推广最适宜的沼肥应用模式,尽最大程度发挥沼肥在农业生产上的作用,现特在我区金鼎山镇银江村进行了沼肥在果树上的综合利用试验,并在试验的多个果树品种上均取得了很好的试验效果,取得了成功,现就试验的相关情况总结如下:  相似文献   

10.
张石 《科技资讯》2013,(32):77-77
本文阐述了传统节流装置在设计和实际应用上的局限性,介绍了最新一代的平衡流量计,在应用上对节能降耗,节省成本等方面上的多种优势。  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.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
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   

14.
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   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

19.
20.
<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has  相似文献   

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