基于单片机的智能粮仓温湿度测试系统的设计与实现

设计的基于单片机的智能粮仓温湿度测试系统,采用STC89C52单片机作为控制芯片,利用DHT11温湿度传感器对环境温湿度进行采集,使用AT24C02芯片实现系统断电时阀值数据保护功能,用液晶显示屏对采集到的数据进行显示,从而实现了对粮仓温湿度的实时检测、数据采集和显示。     

温度、湿度、饲养密度、噪音对实验动物福利的影响

主要阐述了温度、湿度、饲养密度及噪音四种因素对实验动物福利各方面的影响，包括实验动物的舒适度、生长发育、繁殖、健康等。     

亚精胺、低N素及昼夜温度变化诱导离体黄瓜子叶花芽分化

试验了亚精胺(Spd)与激动素(KT)复合处理、不同的N素及昼夜温度变化对离体黄瓜子叶花芽分化的影响。发现:KT 9.3×10-3mm o l.L-1 Spd5×1-0 2mm o l.L-1有利于花芽的诱导,低N素和昼夜变化促进花器官的构建,进一步完善了离体黄瓜子叶花芽分化的试验体系。     

以社会主义核心价值体系为根本建设和谐文化

要构建社会主义和谐社会,必须高度重视和谐文化建设.“社会主义核心价值体系“理论的提出,是我们党在思想文化建设上的一个重大理论创新,为建设社会主义和谐文化指明了方向.本文分析了社会主义核心价值体系对建设社会主义和谐文化的重要性,着重从社会主义核心价值体系的基本内容方面探讨了对建设和谐文化的意义及方式.     

Fabrication and Properties of 3Y-TZP/ZrO2 / Al2O3/MgO Ceramics

Studies on the sintering, microstructure, mechanical properties and low temperature degradation behavior of yttria stabilized-tetragonal zirconia polycrystal （3Y-TZP） were carried out. The results show that the addition of Al2O3 and MgO improve the sintering at low temperatures, and cause exaggerated grain growth and the transformation of tetragonaI-ZrO2 to monoclinic-ZrO2 with corresponding changes in the mechanical properties. The addition of the yttria-free monoclinic zirconia particles change the overall yttria distribution and induce an active transformation toughening mechanism. Furthermore, the dispersed yttria-free ZrO2 can inhibit the tetragonal zirconia transformation, which is beneficial to the improvement of the low temperature degradation behavior of 3Y- TZP ceramics.     

客户关系管理--关系营销的核心

本文从企业采用关系营销对企业发展的意义分析了企业实施关系营销的基础是客户关系管理。指出了客户关系管理是企业建立核心竞争力的有效手段。最终提出了对中国企业实施客户关系管理几条建议。     

负绝对温度与普通物理课程现代化

说明了普通物理学中增加负绝对温度内容的必要性，提出了普通物理课程现代化的建议。     

Examining focus,duration, and classroom impact of literacy and mathematics professional development

Over $18 billion is spent annually on professional development for in-service teachers. This study examined the focus, duration, and impact of professional development activities in which elementary (students ages 5–11) and middle school (students ages 11–14) teachers participated. Ninety-eight teacher-participants completed an online survey about their professional development experiences. In the analysis of literacy survey items and mathematics survey items, there were similarities in focus areas that received greater participation and areas that received less. There were also noticeable differences in frequency of participation in literacy and mathematics professional development. Comparisons between literacy and mathematics professional development indicated that more teachers reported participating in literacy experiences. This included workshops as well as ongoing support through planning meetings and mentorship. Overall, the consensus from teachers was that professional development was effective and has a beneficial impact on their classroom. Researchers share implications for the design and research of future professional development programs.     

丝光沸石活化温度的确定及其对离子交换的影响

本研究借助广角X -射线衍射仪对丝光沸石的耐热性能进行考察 ,确定了丝光沸石的最佳活化温度 ,并通过与 0 0 2 7mol/dm3 的FeCl3 溶液进行离子交换时溶液的电导值及 pH值变化规律 ,进一步证实了丝光沸石的活化温度为 5 0 0℃时丝光沸石具有较强的吸附能力及离子交换能力     

从有色金属废矿渣中提取白银的研究

本文着重论述我们研究出来的沸腾氯化——敏化作用沉淀法使氯化银快速沉淀完全的新技术,并可广泛地应用在分析和提银工艺中.