生物磁性

We report the fabrication and characterization of antifouling polymer-coated magnetic nanoparticles as nanoprobes for magnetic resonance contrast agents.

本文报道了一种可用于核磁共振造影剂使用的纳米探针--抗生物污垢聚合物包裹的磁性纳米粒的制备和鉴定。

Great paleoenvironment change of the basins that located in northeast region of Tibet plateau is closely related to the second uplift of Tibet plateau and the formation of Asia monsoon. This conclusion was found by the analysis and correlation of magnetstratigraphy、 biostratigraphy、lithohorizon in xining basin、 lanzhou basin and linxia basin.

西宁盆地、兰州盆地、临夏盆地的磁性地层、生物地层、岩石地层的对比表明位于青藏高原东北部的周缘盆地在青藏高原的第二次隆升时被迫的进行了相应的应力调整和变形，并在刚成形的亚洲季风共同作用下，导致自身古环境发生重大变迁。

This paper deals with the advance in the study of terrestrial Permian-Triassic boundary. At first, some index TPTB sections and their research backgrounds are introduced. Then, the research status on the synthesis of the TPTB, including biostratigraphy, eventostratigraphy, isotopic dating, magnetostratigraphy and sequence stratigraphy etc., is analyzed. Finally, the existing problems and the next research directions about the TPTB study are assessed.

着重介绍了几个目前陆相二叠系－三叠系界线研究的重点剖面及其生物地层学研究进展；分析了陆相二叠系－三叠系界线综合地层学研究现状，包括生物地层学、事件地层学、同位素年代学、磁性地层学和层序地层学等；剖析了陆相二叠系－三叠系界线地层学研究中存在的问题及进一步的研究方向。

In the present study, we have attempted to build a new "double targeting" and "double therapy" complex therapeutic system to liver cancer, that is to combine "magnetic targeting" with "biologic targeting" and combine "biologic therapy" with "radionuclide therapy".

本研究旨在建立一种新型基因导入系统，利用磁性定位和生物导向双重定位，实现目的基因的高效靶向导入，同时建立一个集基因治疗、生物治疗和内照射治疗于一体的复合治疗系统。

The tuned Brunhes/Matuyama paleomagnetic polarity reversal agrees well with an age of 0.78 Ma dated previously. The tuned ages for several planktonic foraminifer Mo-events also agree well with published dates, and new ages for some other bin events in the South China Sea are also estimated.

调谐结果显示，1143站190.77m、191个冰期、间冰期的深海沉积记录了5.02Ma的南海古海洋学历史；1143站布容／松山磁性反转事件的年龄为0.78Ma，与前人研究结果一致；15个识别出的浮游有孔虫生物事件年龄部分与已经发表过的年龄相吻合，部分为该生物事件在南沙海区的新年龄。

The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.

因此，松辽盆地上、下白垩统的界线应在泉头组的底界，即泉头组与登娄库组之间，而不是泉头组的顶界。2、青山口组一段黑色泥岩、页岩具有有机碳含量高、重排甾烷含量低，生物标志物出现28，30—双降藿烷和伽马蜡烷，干酷根碳同位素具有正向偏移等有机地球化学特征，表征为青山口组一段黑色页岩、油页岩是古湖泊缺氧事件的产物，它对应于白垩纪古海洋Cenomanian—Turonian期界线附近缺氧事件，二者具同步性。3、通过生物地层学、年代地层学、磁性地层学和事件地层学研究，认为泉头阶大体相当于Cenomanian阶，青山口阶相当于晚Cenomanian—早Turonian阶，姚家阶对应于晚Turonian—Coniacian阶，嫩江阶对应于Santonian—Campanian阶，四方台阶和明水阶相当于Maastrichtian阶。4、通过对松辽盆地上白垩统的岩性、岩相及微体化石分析，认为滨浅湖相是微体生物群最为发育的相带，其次为三角洲前缘相和三角洲分流平原相。

Based on soil magnetism investigation on one of area in Hebei province tibility data to describe the soil magnetic background of plain area in Hebei province, and to study the method of biomagnetism application in agriculture.

通过对河北省平原区某地土壤样品的磁性测试，试图分析河北省平原区的土壤磁性背景，探讨生物磁学农业应用的途径。

Based on the recent progress, relative merits of those methods were analyzed. The application of Fe3O4 nano-particles in magnetic fluid, magnetic recording materials, catalytical and microwave materials and medicine were introduced.

根据最新的研究成果，比较了以上各种方法的优缺点，并介绍了磁性纳米四氧化三铁在磁性液体、磁记录材料、催化、生物医学、微波吸收材料等方面的具体应用。

The principal contents of the symposia on stratigraphy in the 31st International Geological Congress comprise the following aspects:geologic time scale, biostratigraphy, event stratigraphy, sequence stratigraphy, magnetostratigraphy, isotopic stratigraphy, integrated stratigraphy, sedimentary facies and palaeogeography, palaeobiogeography, and tectono-palaeogeography.

介绍了第 3 1届国际地质大会有关地层学学术讨论的主要内容，包括地质年代表、生物地层学、事件地层学、层序地层学、磁性地层学、同位素地层学、综合地层学、沉积相与沉积古地理、生物古地理、构造古地理 10个方面。

Secondly, the experimental research advances of cyclopeptide nanotubes using as the templets to produce biologic sensors by synthesis with functional nanomaterials such as electronic, optical and magnetic ones.

进而介绍了环肽纳米管用作生物传感器模板，与功能性纳米材料合成制备生物传感器的实验研究进展，接着介绍了环肽纳米管作为药物或药物载体潜在的应用前景，特别是在某些抗菌和抗感染药物开发设计中的应用以及环肽在不同极性的环境中自组装过程微观机制的MD模拟研究进展，最后介绍了环肽纳米管作为模板，制备磁性、电性纳米材料方面的实验和理论研究进展。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。