银镜反应实验成败因素的探索

银镜反应实验成败受试管的洁净度、醛基的浓度、氨水和硝酸银的浓度及温度等因素影响.     

肺炎衣原体与急性心梗、心绞痛型冠心病的关系

目的：探讨肺炎衣原体（TWAR）与急性心梗（AMI）、心绞痛（Angina）型冠心病之间的关系。方法：采用多聚合酶链反应（PCR）技术对200例冠心病（急性心梗56例,不稳定心绞痛124例,稳定心绞痛20例）和180例非冠心病患者进行全血标本肺炎衣原体DNA检测。结果：急性心梗组肺炎衣原体DNA阳性率为73.2%,不稳定心绞痛组为52.4%,稳定心绞痛组为45.0%;对照组为21.1%,三组与对照组相比,差异均有显著性（P〈0.01,P〈0.01,P〈0.05）。结论：肺炎衣原体感染与急性心梗、心绞痛型冠心病存在密切关系。     

Hemispheric object naming and interhemispheric transfer functions in reading disordered subjects

This study measured unilateral, tachistoscopic naming reaction times of normal and reading disordered children to objects representing two levels of picture vocabulary age. Results of an ANCOVA procedure on the latency data showed main effects for group and stimuli, but not visual field. The latency results suggested parallel, central picture naming operations for each group, with the reading disordered children evidencing significantly longer naming reaction times to each level of stimuli. Arc Sine transformed error data were submitted to an analysis of co-variance procedure and showed a significant stimuli x group interaction. Post hoc tests showed accelerated error rates following right hemispheric stimulation, suggesting anomalous interhemispheric transfer of visual images in the present group of reading disordered children. In addition, left hemispheric stimulations produced significantly more naming errors for the reading disordered subjects as compared to the normal children. Such findings may suggest that a group of higher-ordered processing operations may accompany reading disorders.     

Teaching Plan‐Do‐Study‐Act (PDSA) in a Supply Chain Context: A Paper Football In‐Class Activity

We develop a single‐class period learning game for the Plan‐Do‐Study‐Act (PDSA) improvement cycle. The experiential activity walks teams through the PDSA problem‐solving process as they create paper American footballs and improve their performance using each step of the cycle. The game is one of the first to focus on PDSA. Key benefits include increased student attention, engagement, and learning. Empirical tests show that participant pre‐ and post‐test scores regarding their understanding of each phase of PDSA improved 21.2% after completing the game. Additionally, the treatment group performed 16.6% higher than the control group. In participant perception questions, 85% of participants felt the game was more effective than lecture or reading, 93% felt the game was fun, 95% felt the game improved their understanding of PDSA, and 98% felt the game was engaging.     

MANNICH反应及其在生物碱合成中的应用

本文详细讨论了 Mannich 反应、机理及其在生物碱合成中的应用,并利用 Mannich 反应合成了两种生物碱.     

Nonlinear predator-prey singularly perturbed Robin Problems for reaction diffusion systems

The nonlinear predator-prey reaction diffusion systems for singularly perturbed Robin Problems are considered. Under suitable conditions, the theory of differential inequalities can be used to study the asymptotic behavior of the solution for initial boundary value problems. Project supported by the National Natural Science Foundation of China (No. 10071048), and by the “Hundred Talents Project” of the Chinese Academy of Sciences     

轻型链条炉排跑偏的分析与处理

通过对轻型链条炉排跑偏故障的分析,找出了解决炉排跑偏问题的方法,经过对该炉排的修理、改进,炉排运行效果良好,达到了改进的目的.     

C-[L-Ser-L-Ser]催化的不对称Reformatsky反应

利用液相法合成了侧链带双羟基且具有C2 对称性的环二肽C_[L_Ser_L_Ser]并将其作手性配体催化不对称的Reformatsky反应。考察了反应底物结构以及反应条件等因素对反应产物e.e.值的影响。产物的e.e.值最高达 64%。提出了可能的反应机理     

马尔可夫链方法在体育专业教学质量评价中的应用

利用马尔可夫链评估法,评价了体育专业教师的教学质量,其评价结果比其他评价方法更具合理性。     

稀土农用技术及作用机理研究进展(综述)

本文对近年来稀土农用的文献进行了综述,总结了稀土农用的效果和施用技术,从6个方面概括了稀土增产提质的生物效应本质,提出了当前稀土农用研究中存在的问题及今后努力的方向．