秦岭“翠微晓苑生态园”生态景观设计初探

以＂秦岭翠微晓苑生态园＂生态景观设计为例,介绍了该景区的地理、人文及景观特征,在此基础上对该区域的景观元素特征进行了分析,进而对＂秦岭翠微晓苑生态园＂进行实践性的规划与设计.分析其产品及市场定位,并采用景观生态学的相关理论原理进行功能分区及生态再构设计,力求能以此项目为契机进一步促进秦岭区域生态旅游健康有序的发展.     

立足现状 剖析原因 志在培养——关于小学生数学问题意识的研究

问题是数学的心脏,问题是开启学生创新之门的钥匙。作为教师,在课堂教学中要努力培养学生的问题意识,创设教学情境,启发引导学生提出问题、探索问题,培养学生的创新能力。     

数字语音室耳机故障分析与处理

数字语音室已在高校中普及,并且使用率很高。通过分析6个数字语音室2个学期的设备维修数据,发现耳机是最容易损坏的设备,主要的故障有麦克噪音、麦克无声、耳机无声和单声道,因此对耳机的及时维修是数字语音室有效维护的关键。     

高职思想政治理论课研究性教学法的探究与实践

研究性教学是相对于传统讲授性教学提出来的一种教学方法,是融学习与研究为一体的教学体系,是与创新性教育相适应的教学模式。我们要充分认识到高职院校思想政治理论课开展研究性教学的现实意义,通过提高教师整体素质、优化课堂教学与实践教学环节、培养研究性学习方法、确立多元化的教学评价标准、加强教学环境现代化建设等措施,在实践研究性教学过程中不断推进思想政治理论课教学改革的深化和发展。     

以培养学生自主学习能力为导向的药学本科《无机化学》的教学研究与实践

本文对当前药学本科《无机化学》教学现状作了分析,提出了有效的教学改革方法,即传统理论教学与PBL理论教学、经典实验逆向思维教学法与综合实验技能培养相结合的教改措施,以实现学生主动获取知识、应用知识、分析问题、解决问题、创新思维及批判性思维等能力的培养。     

2020春季开学第一课语文教学案例

随着疫情形势的逐渐好转,各行各业相继复工复产,各中小学校也将陆续开学。为了抚慰疫情给孩子们的心灵带来的影响,时值春季,我们选择了毛泽东的《七绝·咏蛙》作为开学后语文教学的第一课。     

Anisotropic fluoride nanocrystals modulated by facet-specific passivation and their disordered surfaces

Rutile-type fluorides have been proven to be active components in the context of emerging antiferr-omagnetic devices. However, controlled synthesis of low-dimensional, in particular two-dimensional (2D), fluorides in a predictable and deterministic manner remains unrealized because of a lack of efficient anisotropic control, which impedes their further development in reduced dimensions. We report here that altered passivation of {110} growing facets can direct the synthesis of rutile-type fluoride nanocrystals into well-defined zero-dimensional (0D) particulates, one-dimensional (1D) rods and 2D sheets in a colloidal approach. The obtained nanocrystals show positive exchange bias and enhanced magnetic transition temperature from the coexistence of long-range antiferromagnetic order and disordered surface spins, making them strong alternatives for flexible magnetic devices and sensors.     

Injectable hybrid inorganic nanoscaffold as rapid stem cell assembly template for cartilage repair

Cartilage injuries are often devastating and most cannot be cured because of the intrinsically low regenerative capacity of cartilage tissues. Although stem-cell therapy has shown enormous potential for cartilage repair, the therapeutic outcome has been restricted by low survival rates and poor chondrocyte differentiation in vivo. Here, we report an injectable hybrid inorganic (IHI) nanoscaffold that facilitates fast assembly, enhances survival and regulates chondrogenic differentiation of stem cells. IHI nanoscaffolds that strongly bind to extracellular matrix (ECM) proteins assemble stem cells through synergistic 3D cell–cell and cell–matrix interactions, creating a favorable physical microenvironment for stem-cell survival and differentiation in vitro and in vivo. Additionally, chondrogenic factors can be loaded into nanoscaffolds with a high capacity, which allows deep, homogenous drug delivery into assembled 3D stem-cell-derived tissues for effective control over the soluble microenvironment of stem cells. The developed IHI nanoscaffolds that assemble with stem cells are injectable. They also scavenge reactive oxygen species and timely biodegrade for proper integration into injured cartilage tissues. Implantation of stem-cell-assembled IHI nanoscaffolds into injured cartilage results in accelerated tissue regeneration and functional recovery. By establishing our IHI nanoscaffold-templated 3D stem-cell assembly method, we provide a promising approach to better overcoming the inhibitory microenvironment associated with cartilage injuries and to advance current stem-cell-based tissue engineering.     

美国智库对中美科技竞争的观点解读及对策建议

[目的/意义]准确研判美国智库对于中美科技竞争的基本观点,是分析美国对中国进行科技竞争的舆论走向、战略认知与政策取向的重要依据。[方法/过程]选取美国8家主流智库的11份代表性研究成果作为研究样本,发现美国智库主要围绕中国科技实力的发展对美国产生的影响与美国如何同中国展开科技竞争这两个议题进行全面与深入的探讨。总体而言,美国主要智库已就中国科技实力对美国形成重要挑战这一点达成一定的共识,但在美国同中国展开科技竞争应实行的具体政策上存在一定的分歧。[结果/结论]美国智库总体上对中美科技竞争持消极观点,这是美国对中国的战略认知出现转变的结果。这些观点的传播将影响美国政府对华科技政策的取向,影响其他国家同中国展开的科技合作。中国应该在理性与辩证地看待美国主流智库观点的基础上,消除美国智库观点带来的消极影响,管控中美间在科技领域的战略竞争,努力拓展同美国以及其他国家在科技领域的合作空间,增强自主创新能力,化解中国在科技外交上可能面临的不利局面。