努力推进创新驱动型经济发展方式的形成

高投资支撑的经济发展方式在浙江已经发生重大变化,但向创新驱动型发展方式转变,不仅浙江自身创新能力不足,而且在     

Neural correlates of short-term perceptual learning in orientation discrimination indexed by event-related potentials

The current work investigated the neural correlates of visual perceptual learning in grating orientation discrimination by recording event-related potentials (ERPs) from human adults. Subjects were trained with a discrimination task of grating orientation in three consecutive training sessions within 2 h. While reaction times (RTs) were shortened gradually across training sessions, the N1 was decreased and the P2 was increased over the parietal and occipital areas. A broadly distributed P3 was increased along with more practices. In addition, the time course of learning reflected in the P2 and P3 amplitudes was in line with the changes of reaction times and exhibited a stable level during later training. The impli- cations of these results to the neural mechanisms subserving perceptual learning were discussed.     

When and how did plate tectonics begin？ Theoretical and empirical considerations

Plate tectonics is the horizontal motion of Earth’s thermal boundary layer (lithosphere) over the convecting mantle (asthenosphere) and is mostly driven by lithosphere sinking in subduction zones. Plate tectonics is an outstanding example of a self organizing, far from equilibrium complex system (SOFFECS), driven by the negative buoyancy of the thermal boundary layer and controlled by dissipation in the bending lithosphere and viscous mantle. Plate tectonics is an unusual way for a silicate planet to lose heat, as it exists on only one of the large five silicate bodies in the inner solar system. It is not known when this mode of tectonic activity and heat loss began on Earth. All silicate planets probably experienced a short-lived magma ocean stage. After this solidified, stagnant lid behavior is the common mode of planetary heat loss, with interior heat being lost by delamination and “hot spot” volcanism and shallow intrusions. Decompression melting in the hotter early Earth generated a different lithosphere than today, with thicker oceanic crust and thinner mantle lithosphere; such lithosphere would take much longer than at present to become negatively buoyant, suggesting that plate tectonics on the early Earth occurred sporadically if at all. Plate tectonics became sustainable (the modern style) when Earth cooled sufficiently that decompression melting beneath spreading ridges made thin oceanic crust, allowing oceanic lithosphere to become negatively buoyant after a few tens of millions of years. Ultimately the question of when plate tectonics began must be answered by informa- tion retrieved from the geologic record. Criteria for the operation of plate tectonics includes ophiolites, blueschist and ultra-high pressure metamorphic belts, eclogites, passive margins, transform faults, paleomagnetic demonstration of different motions of different cratons, and the presence of diagnostic geochemical and isotopic indicators in igneous rocks. This record must be interpreted individually; I interpret the record to indicate a progression of tectonic styles from active Archean tectonics and magmatism to something similar to plate tectonics at ~1.9 Ga to sustained, modern style plate tectonics with deep subduction——and powerful slab pull——beginning in Neoproterozoic time.     

Inhibiting effect of melittin on pathogens of crops

The spectrum of antimicrobial effects of melittin were investigated on 19 pathogens by using a cylin-der-plate method with serial dilutions. Bacteriostatic efficiency and possible mechanistic effects were monitored via growth curves. The mechanism of inhibition was further analyzed by SDS-PAGE, flow cytometry and electron microscopy. Melittin had a wide inhibition spectrum and killed pathogens ef-fectively, and bacteriostatic action was influenced by factors such as pH and temperature. We eluci-dated three inhibitory mechanisms: melittin integrated with the cell membrane causing cell bursting and cytoplasm release, inhibited the synthesis of proteins and caused the cytoplasm to condense, and delayed pathogens in phase I (or phase G1) so that they could not complete the cell cycle. These re-sults suggest that melittin could serve as a broad-spectrum biological pesticide with fast-action and high-efficiency.     

Auto CAD与产品数据管理整合运用

随着信息技术的不断发展，越来越多的企业对产品研发制造与企业管理中的信息化建设有了较高的认知水平。对企业现代化信息管理有着更高目标与要求，不再满足于辅助设计（CAD）的现状，向着产品数据管理和信息系统集成方向逐步迈进。产品数据管理（PDM）是利用现代管理技术和信息处理技术来管理所有与产品有关信息和所有与产品有关过程的技术。     

陕西省企业信息资源集成机制的分析

介绍了企业信息资源集成机制的定义和要素,分析了陕西省企业信息资源存在的问题,结合集成管理理论,提出了企业信息资源的集成机制。     

知识产权的独占性与利益平衡机制

介绍了知识产权的独占性与利益平衡机制,指出知识产权的独占性与利益平衡机制是相统一的,提出促进两者和谐发展的建议。     

我国应对反倾销的主要措施及其评析

面对国外此起彼伏的反倾销调查,虽然我国采取了各种各样的反倾销应对措施,在一些反倾销案件上取得了胜利,也得出了经验教训,但仍存在一些问题,如企业应诉不力、预警机制不完善、商会和行业协会的作用有待进一步发挥;政府重视不够等。本文试图通过对应对反倾销的主要措施进行评析,促使我国寻找更为有效的反倾销应对手段,使我国的出口企业能借助各方面的力量,不断完善我国反倾销的应对措施。     

信息技术与中学数学课程整合案例及其引发的思考

信息时代的到来使传统的数学教育面临着挑战。将信息技术整合于中学数学教学中,有利于提高教学效率,也为数学教学改革提供了强有力的技术支持。本文主要以具体的课程整合为例进行分析,反思在整合过程中教师、学生应注意的问题。     

篮球运动中膝关节髌骨劳损的体育康复方法

髌骨劳损是篮球运动中的多发性运动损伤,探讨损伤发生机制,寻找简单实用的体育康复方法,使运动中出现的损伤加速恢复,将大大减少损伤所带来的负面影响。