创新教学思想，提高师范生素质——谈化学素质论教学方式的改革

本从三个方面讨论了化学教学论教学改革的想法。首先，变“以教师为中心”为“以学生为中心”；其次利用现代化教学设备，增强教学的直观性和趣味性；第三，采用CAI教学软件，缩短教学时间，增加信息。     

浅谈英语听力教学

化学课程改革明确了“培养学生的学习策略”是素质教育的重要组成部分，是义务教育阶段化学教学的重要内容。化学作为一门生活气息浓厚的学科，较其他学科而言它与实验和生活实践联系更为密切，适于用进行探究的内容较多。新课改力求改变过去以教材为中心、以教师为中心的教学模式，提倡让学生在实践中学习知识、获得技能、掌握方法，并从中体验到学习的乐趣。     

良好的开端初探

化学教学初始值得注意的几点是：1、认真做好学年计划和学期计划；2、研究学生，了解学情，设计教法；3、尽快进入角色，上好第一堂课，为今后的教学开好头；4、尽快熟悉学生，应在开学两周之内收出学生的名字；5、广泛开展趣味化学小实验，积极培养学生的好奇心和学习化学的兴趣。这些方法给化学教学带来了良好的开端。     

化学教学中培养学生科学素养的思考

化学作为自然科学的一个重要门类现今已渗透到社会生活的各个方面，成为处于中心地位的科学，同时化学又是以实验为基础的科学。在化学教学中，通过理论与实践相结合，从科学知识、科学能力、科学方法、科学精神等几方面全面培养学生的科学素养。     

试论化学课堂审美化教育设计

化学审美化教学课堂模式的基本环节为：创美入境→演示观察→小组活动→师生对话→行为反馈。化学课堂审美化教学设计主要包括教学内容、教学过程、教学媒体、教学评价。在教学设计中，所采用的方法既要符合教学内容的要求，又要符合学生的心理规律，体现教学的和谐美和规律美。     

化学课堂，问题共享

以探究性学习为标志的新课改中，课堂是以“问题”为中心的。学生的学习过程成为了一个不断发现问题、分析问题和解决问题的过程。在化学课堂教学的各个环节中如果巧妙的设计问题，必然能促进学生的问题解决能力的有效培养和教学目标顺利完成。     

浅谈化学教学中如何培养学生的创新能力

我们的教学目标就是要为现代社会培养富有创新、具有多种能力、能够适应社会需要的人才。化学教育是以培养创新精神和实践能力为核心的素质教育的学科之一,因此,化学课堂教学作为化学教育的主阵地,除了传授化学基础知识、基本技能外,还应依据学科特点,找出创新教育突破口,培养学生的创新精神。一、更新教学观念教师应该从传统的应试教育的圈子里跳出来,具备明晰而深刻的创新教学理念、不断进取的创新精神。传统教育的基本特点是以知识的传授为中心,过分强调了教师的作用,而新的教育要在教学过程中体现“学生为主体,教师为主导,训练为主线,思…     

化学教学中的情景设置

在化学教学中，教学情景的设置要以培养学生的学习兴趣为前提，诱发学生学习的积极性；以观察、感受为基础，强化学生学习的探究性；以发展学生的思维为中心，着眼于培养学生的创新性；以解决问题为途径，贯穿实践性。一个好的教学情景应该与主题紧密吻合，它并不是用来举例子说明观点的，而是为了向学生提供材料和环境的。它应当贯穿于整个课堂，     

“知识问题化”在高三化学教学中的实践

“知识问题化”教学设计可以帮助教师在高三化学教学中创设问题情境，调动学生学习的积极性，在学生有效参与下提高高三化学复习的有效性。     

浅谈天然药物化学PBL教学改革的设计及实践

探讨该校天然药物化学课程PBL教学(problem of learning,PBL)改革的设计及实践,主要根据PBL的教学理念,对天然药物化传统的教学方法进行改革,建立新型的PBL教学模式.采用"以问题为导向,学生为中心"的PBL教学形式,加强教师的导学作用,以学生为本、提高学生学习主动性,提高学生综合能力和素质.通过对天然药物化学PBL教学的现行模式进行了分析,并进行科学的设计及实践,在教学中尝试采用PBL教学法,取得较为满意的教学效果,为今后天然药物化学教学改革提供依据.     

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.