Musical Expertise and Melodic Structure in Memory for Musical Notation

Two experiments plus a pilot investigated the role of melodic structure on short-term memory for musical notation by musicians and nonmusicians. In the pilot experiment, visually similar melodies that had been rated as either good or bad were presented briefly, followed by a 15-sec retention interval and then recall. Musicians remembered good melodies better than they remembered bad ones: nonmusicians did not distinguish between them. In the second experiment, good, bad, and random melodies were briefly presented, followed by immediate recall. The advantage of musicians over nonmusicians decreased as the melody type progressed from good to bad to random. In the third experiment, musicians and nonmusicians divided the stimulus melodies into groups. For each melody, the consistency of grouping was correlated with memory performance in the first two experiments. Evidence was found for use of musical groupings by musicians and for use of a simple visual strategy by nonmusicians. The nature of these musical groupings and how they may be learned are considered. The relation of this work to other studies of comprehension of symbolic diagrams is also discussed

Study on Existent Form of Mercury in Sediments of Miyun Reservoir,Beijng

在改进Tessier方法的基础上,利用冷原子吸收对北京密云水库沉积物中汞的形态进行研究,发现密云水库沉积物的总汞含量较高,沉积物中的汞主要以气态汞、有机汞和硫化物汞的形式存在,生物可以直接利用的汞较低,但一些目前不能直接利用的汞在一定条件下可以转化为可利用的汞,需要对此加以关注。On the bases of modified Tessier method,the existent forms of mercury in sediments of Miyun reservoir,Beijing were determined with cold vapor atomic absorption(CVAA).The results showed that total mercury in the sediments is high,and that gaseous mercury,organic mercury and sulfide mercury(residual mercury) are the main form of mercury.Most of them can not be used by biomass,but,what should be noted is that some unusable mercury can be transformed usable mercury under special conditions..国家自然科学基金(20077016);; 中国博士后基金(2002032148);; 厦门大学行动计划联合资助项

确定低渗透油藏启动压力梯度的三种方法

了确定低渗透油藏启动压力梯度的三种方法,重点介绍了低渗油藏试井分析确定启动压力梯度的方法和实际应用意义。给出了低渗油藏试井分析模型与常规中高渗油藏试井分析模型的对比。通过实例测试资料分析,指出了目前低渗油藏试井资料分析的一种常见错误

Characteristics of Ulva Prolifera Biochar

在实验室内用取自青岛的上岸浒苔进行水热法处理,获得浒苔基生物炭AC,对AC进行C产率、元素分析、SEM+EDS,FTIR,TEM等表征分析,进行浒苔基生物炭AC水热特性研究.实验结果表明:浒苔基生物炭AC在烧制4 h左右具有较高的C产率,及较高的C元素含量,且孔状结构发育良好,其表面官能团在组成上较为单一,以粒径小的无定形C为主

Pollution and Assessment of Heavy Metals in Huangpu River Sediments

采用地积累指数法和潜在生态危害指数法对黄浦江沉积物中的重金属进行了评价研究,解释了两种评价方法结果存在差异的原因。两种评价方法的结果均表明,黄浦江砷污染严重,镉中等程度污染,且各个江段均受到了一定程度的污染。Based on the principle of sedimentology and environmental behavior of heavy metals, the index of geoaccumulation and potential ecological risk index were used to evaluate heavy metals pollution in sediments of Huangpu River, Shanghai. The difference between these two methods was explained as well. Results showed that each section of the River has been polluted with As and Cd as the major heavy metal pollution.国家自然科学基金委员会(20077016);; 中国博士后基金(2002032148);; 厦门大学行动计划(0660-X01114

磁控溅射镀铽在烧结钕铁硼中的晶界扩散研究

采用直流磁控溅射法在烧结钕铁硼磁极表面镀覆不同厚度的Tb膜,而后进行加热扩散,研究了扩散对Nd、Tb在磁体内的分布以及磁体性能的影响。结果表明,在剩磁不明显降低的情况下矫顽力有明显的提高。扩散后的样品中主相形成了壳层结构(Nd_(1-x)Tb_x)_2Fe_(14)B,提高了RE2Fe14B的各向异性场; Nd元素存在向表面扩散的行为,Tb随着扩散深度的增加,浓度逐渐降低

绿洲农业高效用水技术集成与示范

简要技术说明： 该成果围绕棉花、葡萄、小麦3大作物,从干旱绿洲区作物高效用水和提高作物水分生产效率的目标出发,研究形成了棉花高效用水技术模式3套、葡萄高效用水技术模式1套、小麦优化灌溉节水及配套栽培技术模式1套、干旱绿洲区农业高效用水管理技术模式1套,开发了15项农业节水关键技术和1套“农业灌溉决策支持系统”,筛选出节水配套抗旱小麦品种2个、抗旱棉花品种1个,制定了农业高效用水技术规程7项,研发了专利产品1项、软件著作权登记1项,人才培养12名、发表论文45篇。通过对高效灌溉技术、农艺高效用水技术、高效用水管理技术等3方面的关键技术的集成与创新,研究形成了干旱绿洲区特色作物(棉花、葡萄、..