在化学实验教学中培养学生的创新思维

化学实验是培养学生创新思维的主要形式之一，同时化学实验也是检验学生创新思维品质的重要形式．本文将介绍在化学实验教学中培养学生的创新思维的方法以及化学实验改革与化学创新思维的培养．     

微型化学实验在创新教育中的应用

21世纪是一个创新的世纪,创新是一个民族进步的灵魂,是国家兴旺发达的不竭动力。在采用微型化学实验进行化学教学中对培养学生创新思维和创新能力有很大的作用,同时微型化学实验对降低实验经费,减少环境污染有着非常重要的意义。微型化学实验是在创新教育过程中激发学生学习化学兴趣、培养学生绿色化学的理念、提升学生的综合能力和实施素质教育的有效途径。     

化学教学中思维训练与创新培养

培养学生的创新能力是教育教学改革的永恒课题,创新是一个民族进步的灵魂,要创新离不开创造性人才的培养,创造性人才的培养离不开教育,离不开对学生的思维训练和创新培养。本文通过介绍化学历史、启发性探究性的学习、实验创意设计等方面内容去探讨如何培养学生的创新思维和创新能力,促进创新思维发展。     

化学教学中的思维与创新

精心质疑,激起学生兴趣;积极鼓励,培养创新思维;贴近生活,展现创新能力;探索实验,培养创新思维;注重学生思维能力的训练,使学生养成具有独立思考能力和自我学习能力的人,是培养高素质人才的必要手段。本文重点探讨了化学教学过程中怎样培养创新思维。     

让化学实验在化学教学中熠熠生辉

化学是一门以实验为基础的自然科学,实验是化学科学的灵魂。著名化学家戴安邦教授认为:化学实验教学是实施全面化学教育的一种最有效的形式。化学的感性认识主要靠化学实验提供,化学实验是学生获取知识的重要手段,也是培养学生的科学态度、训练学生思维的重要方法,同时还是培养学生的创新精神和实践能力的重要途径。随着课程改革的进一步推进,化学实验越来越凸显其独特的育人魅力。因此,如何让化学实验在化学教学中熠熠生辉,探索有效的实验教学模式已受到广大化学教育工作者的关注。现结合自已的教学实践和探索,对实验教学提出一些改进和补充,谈一些粗浅的体会。     

基础化学实验教学改革的几点体会

改革基础化学实验教学方法,在实践中培养学生良好的化学实验素质,培养具有创新意识、创新思维、创新能力的高素质的人才.     

在化学实验中培养学生的创新意识

在化学实验教学中实施创新教育,首先要搞好实验教学,培养学生创新意识;其次应改进实验,让学生自己动手,培养学生创新思维;第三要利用设计性实验,培养创新能力;第四要增加实验,培养学生的创造精神。     

探索化学创新实验教学模式

化学实验是培养学生实践动手能力、创新能力、探索研究能力的重要途径。结合在本科化学实验教学中的实践经验,以开设过的创新实验项目为例,详细介绍了四川大学化学实验教学中心在化学基础实验课程、综合实验课程、探索创新实验项目、创新调查实验项目四个方面进行的创新实验教学的探索,并分别探讨了这些创新实验项目的考核方式。通过创新实验的开设,引导学生的思维方式朝着科学、拓展和创新性的方向转变,为培养学生的创新能力提供新思路。     

微型化学实验与师范院校化学创新教育的探索

从思维科学的角度出发,将微型化学实验和创新教育二者有机地结合起来,在师范院校用微型化学实验进行化学教学以利于推动实验教学改革,培养具有创造性思维和创新能力的学生;同时,培养学生绿色化学的新理念.     

初中化学实验教学与学生创新能力的培养

在新课标的化学教材中,增加了许多化学实验尤其是探究性实验。化学实验成为落实新课程改革目标的重要手段之一。本文分析了化学实验教学中如何培养学生的创新能力,即变演示实验为探索性实验,采用多种实验方法,活跃学生思维;创设实验问题,通过实验探究促进学生创新能力的发展;引导学生保持积极态度,主动探索研究;培养学生兴趣,激发学习、创新热情。     

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.     

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.     

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.     

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.     

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.     

On Tragic Consciousness In The Works By Ernest Hemingway

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.