环境科学专业实践教学改革研究

实践教学是环境科学专业教学过程中的重要环节,在培养学生的理论联系实际能力方面具有十分重要的作用,也是培养学生探索能力和创新思维能力的主要途径之一。为了充分发挥实践教学在培养高素质环境科学专业人才中的作用,满足培养环境学科创新人才的要求,针对沈阳师范大学环境科学专业实践教学存在的问题,对实践教学进行以下改革:构建与时俱进的实践能力培养方案及实践教学体系,强化实习基地建设及改善实践教学条件、内容、教学手段,积极开展学术活动和社会实践培养大学生实践能力和提高师资队伍的实践能力。通过实践教学改革使学生具有实践技能、综合和创新能力。     

生物技术专业实验教学的改革实践

实验教学是为实现专业培养目标和规格的整个教育过程的重要部分,是培养学生综合能力和创新思维能力的重要过程。实验教学对学生知识、能力、技能等综合素质的培养有着理论教学不可替代的作用。按照生物技术专业人才培养目标和人才规格,针对沈阳师范大学化学与生命科学学院生物技术专业人才培养模式中的实验教学与实践教学存在的问题进行改革与实践;充分发挥实验教学在培养高素质生物技术专业人才中的作用,构建了分层次实验教学体系;优化实验教学内容;改进实验教学方法及手段;构建了新的考评机制;对于实验教学及实践教学中存在的问题提出对策。     

浅谈如何在实践教学中强化大学生能力的培养

环境科学是一门应用性很强的学科,强化环境科学专业学生实践教学具有十分重要的意义。本文从实验教学、实习教学、社会实践以及组织学生开展各种科研活动等方面介绍了我们在实践教学环节的举措,探讨了提高环境科学专业学生创新精神与实践能力的途径。     

构建动物学实验开放平台培养创新人才

动物学是高校生物相关专业的核心基础课,其实验教学担负着提升学生动手实践能力及创新思维能力的重要使命,构建动物学实验开放平台能够使动物学实验教学与培养学生综合科研素养和创新能力紧密结合,因此在对比传统动物学实验教学与现代开放实验教学的基础上,从动物学实验室全方位开放管理、增强学生的主体地位、增加研究性和设计性实验比例和大学生创新课题与开放平台有机结合几个方面综合分析了动物学实验开放平台的构建在创新人才培养中的作用,旨在为培养学生的创新能力和实践能力服务。     

环境工程专业实验教学体系的构建

高校实验教学是培养学生创新素质的一个重要实践环节,在创新人才培养模式下构建综合性、开放性和创新性的实验教学体系是高等教育的一项新课题。通过实验教学内容及考核方法改革,构建了与理论教学有机结合,以能力培养为核心,涵盖基本型、综合型和研究型＂三个层次＂,兼顾基础训练与学生个性化发展的环境工程专业实验教学体系,建立的实验教学体系对培养＂厚基础、宽口径、重实践、强能力、高素质＂的环境工程专业应用型人才具有十分重要的意义。     

环境科学专业研究型实践教学体系的建立

为了满足学科不断发展的需要,适应河南大学建立研究型大学的发展目标,环境科学专业应该建立研究型实践教学体系。该文通过详述研究型教学实践体系的内容及其构建方法,旨在充分发挥其作用,提升环境科学专业的特色,培养学生的创新精神和实践能力,增强环境科学专业本科生的综合能力。     

构建实验教学新体系培养学生的创新意识

面向市场,培养具有综合设计能力、独立开发能力和创新意识的复合型高素质人才是大学教育的一项重要任务。对本专业进行实验教学体系、实验教学方法、实验教学内容及实验教学考核的全面改革。构建实验教学新体系,培养学生创新意识的具体工作。教学实践表明,我们实验教学改革的实践和探索取得了初步的效果,学生的实验综合设计能力和创新意识有了较大的提高。     

环境科学专业实验室开放与应用型人才培养探索

高校实验室对学生开放是培养具有较强实践能力的高层次人才的需要．结合重庆文理学院新建综合性本科院校开办的环境科学专业实验室建设和教学实践，探讨在现有实验教学条件下开放实验教学与应用型人才培养的关系及意义．     

环境科学紧缺专业实验教学改革初探

结合新时期对环境科学专业人才实践能力培养的要求及新疆维吾尔自治区重点产业紧缺人才专业建设要求,对喀什师范学院环境科学专业实验教学体系进行了分析,提出了现有实验课程的改革和优化模式。对环境科学专业实验课程、实验项目、实验教学模式、实验考核方式等进行了改革,保证了实验教学的质量,提升了学生的实践技能和创新能力。     

烹饪与营养教育专业开放实验教学研究

开放实验对培养学生的实践能力、创新能力和综合素养具有重要作用。文章针对我国烹饪与营养教育专业实验教学的特点与不足,探讨了烹饪专业开放实验教学模式的构建以及取得的教学效果。     

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.