动物体液中的胞外钙调素结合蛋白（快报）

利用以生物素标记钙调素为探针的凝胶覆盖技术检测动物体液中胞外钙调素结合蛋白（ＣａＭＢＰ）。结果，人的唾液中检测到至少３种分子量分别为１４ｋＤ，２４ｋＤ和５２ｋＤ的ＣａＭＢＰｓ。其中，５２ｋＤ蛋白与ＣａＭ的结合依赖于Ｃａ２＋的存在，而２４ｋＤ和１４ｋＤ蛋白则不依赖于Ｃａ２＋。在鸡血清里，检测到以９４ｋＤ，４４／４５ｋＤ蛋白为主的４～５种胞外ＣａＭＢＰｓ，所有的这些蛋白与ＣａＭ的结合都依赖于Ｃａ２－。此外，在牛奶中也检出胞外ＣａＭＢＰｓ。以上结果，证明了在动物中普遍存在胞外ＣａＭＢＰｓ，为胞外钙调素的作用机理提供了新线索。     

青藏高原：全球气候变化的驱动机与放大器──Ⅰ 新生代气候变化的基本特征

除周期性气候波动外，新生代气候变化的基本特征是阶梯状气候变冷、波动幅度的不断增加和气候波动周期的转变。深海氧同位素记录表明新生代曾发生至少三次快速变冷事件，它们分别发生在３６，１５和２．４ＭａＢＰ前后。根据来自北大西洋的深海氧同位素记录，第四纪气候变化的趋势是波动幅度增加、频率降低。Ｂ／Ｍ界限附近，气候波动周期由４１ｋａ转变为１００ｋａ。黄土高原上黄土地层与磁化率研究揭示，现代东亚季风出现于２．４Ｍａ前，并于１．１和０．６ＭａＢＰ前后两度加强，现在的季风环流形势形成于０．６ＭａＢＰ，米兰柯维奇理论不能解释上述新生代气候的阶梯状变冷、第四纪气候的阶段性和东亚季风的形成及加强，因此除轨道因素外，还有别的因素控制气候变化。     

120万年以来青海东北部极干冷事件探讨

对青海东北部湟水各地高阶地上的西宁大墩岭黄土剖面通过多环境指标综合分析，发现其间夹有三层古风成砂，它们反映了自１．２ＭａＢ．Ｐ．以来本区经历的三次极干冷气候事件。根据古地磁测年及＾１４Ｃ测年推算：最早一次极干冷事件出现在１１１０ＫａＢ．Ｐ．，基本与大姑冰期Ｉ期相当，可与深海氧同位素３８阶段对应；第二次极干冷事件出现于１４０ＫａＢ．Ｐ．，大致相当于倒数第二次冰期，与深海氧同位素６阶段对应；最未一次极     

黄土高原晚第三纪红土的形态学和地球化学特征及其环境指示意义

对甘肃西峰地区晚第三纪红土和第四纪风成典型黄土的化学元素、矿物组成和矿物颗粒形态特征研究揭示出，该区红土下部（６．２ＭａＢ．Ｐ．前）是红化的土壤物质与其它物质一起经流水搬运再堆积的产物；中部（６．２Ｍａ～３．４ＭａＢ．Ｐ．）未发现再搬运的痕迹，是风尘堆积经风化和间歇性地下水位波动作用所形成的；上部（３．４～２．６ＭａＢ．Ｐ．）是典型的风尘堆积－土壤序列。由于干旱区的存在是黄土高原风尘堆积的前提条件     

碱土云母可切削玻璃陶瓷的研究

基于Ｂａ０．５Ｍｇ３（Ｓｉ３ＡｌＯ１０）Ｆ２－Ｍｇ２Ａｌ４Ｓｉ５Ｏ１８－Ｃａ３（ＰＯ４）２系统，制备出了含Ｂａ碱土云母为主晶相的可切削玻璃陶瓷，弯曲强度σｂ＝２２９ＭＰａ，断裂韧性ＫＩＣ＝２．４８ＭＰａ．ｍ＾１／２，钻孔速度大于７ｍｍ／ｍｉｎ。优良性能的获得借助于Ｂａ云母玻璃陶瓷可控的微观组织，即相互交错的云母晶体和“卷心菜”的组织特征。     

配合物Eu（P—MOBA）3bpy的晶体结构

在乙醇溶液中合成了对甲氧基苯甲酸－２，２′－联吡啶铕配合物的晶体，用ｘ－射线衍射方法测定了配合物的单晶结构，其结构式为Ｅｕ２（Ｐ－ＭＯＢＡ）６（ｂｐｙ）２Ｃ２Ｈ５ＯＨ（Ｐ－ＭＯＢＡ：对甲氧基苯甲酸根离子；ｂｐｙ；２，２′联吡啶），属三斜晶系ＰＴ空间群，晶胞参数；ａ＝１４８２（３）ｎｍ，ｂ＝１．３９０１（２）ｎｍ，ｃ＝１．０９４８（２）ｎｍ；α＝１０３．６３（１）＾０，β＝９２．６７（２）６０，γ＝     

中国黄土中的仓鼠,鼢鼠化石及在磁性地层中的位置

研究了中国黄土中的仓鼠、鼢鼠化石，及其在磁性地层中的位置，并将其按时间分布划分为４个阶段：中间原鼢鼠Ｍｅｓｏｓｌｐｈｎｅｕｓｔｉｎｔｅｒｍｅｄｔｕｓ阶段（３．４０～２．４５Ｍａ）、奥米加鼢鼠Ｙｏｕｎｇｉａｏｍｅｇｏｄｏｎ阶段（２．４５～１．６０Ｍａ）、丁氏鼢鼠Ｙ．ｔｉｎｇｉ阶段（２．００～０．７３Ｍａ）、方氏鼢鼠Ｅｏｓｐａｌａｘｆｏｎｔｏｎｉｅｒｉ－沙鼠Ｍｅｒｉｏｎｅｓ阶段（０．７３Ｍａ～Ｒｅｃ．）。第一阶段处于新生代以来最后的温暖湿热时期；第二阶段代表了湿热气候环境的最终结束、干冷气候的开始；第三阶段反映了相对干冷的气候环境，以及干冷－湿热气候的频繁波动；第四阶段气候更加寒冷干旱，部分黄土地区沙化。     

少量异组分对贝利特性能的影响

本文采用正交试验法，探讨了ＢａＯ、ＺｎＯ、Ｐ２Ｏ５、ＴｉＯ２、Ｒ２Ｏ（Ｋ２Ｏ＋Ｎａ２Ｏ）等少量异组分对贝利特性能的影响及其影响的显著性大小．结果发现：ＺｎＯ对贝利特净浆强度影响最显著，ＢａＯ、Ｐ２Ｏ５的作用次之，而ＴｉＯ２、Ｒ２Ｏ在本实验条件下对贝利特净浆强度无明显影响．ＺｎＯ的掺入将显著降低贝利特净浆强度，而适量掺入ＢａＯ、Ｐ２Ｏ５则有利于提高贝利特净浆强度，但当ＢａＯ掺量过多时，将导致贝利特净浆后期强度降低．     

烧结温度对PSBN铁电陶瓷介电性能的影响

用普通的电子陶瓷工艺制备了ＰｂＯ－ＳｒＯ－ＢａＯ－Ｎｂ２Ｏ５（ＰＳＢＮ）系统民陶瓷，研究了ＰＳＢＮ系统铁电陶瓷的介电性能与烧结温度的关系，ＸＲＤ分析表明：ＰＳＢＮ系统铁电陶瓷的主晶相是Ｐｂ０．７Ｂａ０．３Ｎｂ２Ｏ６（ＰＢＮ）、Ｓｒ０．５Ｂａ０．５Ｎｂ２Ｏ６（ＳＢＮ）和Ｂａ０．２７Ｓｒ０．７５Ｎｂ２Ｏ５．７８（ＢＳＮ），将这一复杂的化学系统看作三元系固熔体，其中ＰＢＮ、ＳＢＮ和ＢＳＮ各相比例随烧结温     

在p型GaAs材料上用快速退火形成Au／Zn／Au欧姆接触

在Ｍｇ注入形成的Ｐ型ＧａＡｓ材料上，用预热和快速两步退火方式形成ｐ型欧姆接触。用传输线方法（ＴＬＭ）测量比接触电阻，得到最佳值３．７３×１０＾－５Ω．ｃｍ＾２，用在ＡｌＧａＡｓ／ＧａＡｓＨＢＴ器件上，性能良好。     

黄河中游的地貌与地文期问题

上起积石峡下至三门峡的黄河中游地区在晚新生代期间发育了一级夷平面、一级剥蚀面和七级河流阶地。夷平面形成于２．４Ｍａ以前的晚第三纪，剥蚀面形成于２．４～１．８Ｍａ Ｂ．Ｐ的第四纪初期；黄河的七级阶地分别是开始于１３００、１１００、７８０、５９０、１４０、５０、１０ｋａ Ｂ．Ｐ的河流下切形成的，其原因在于构造的脉动式上升。基于上述研究成果，我们将每一地貌面形成的时期定义为一个地文期，它与其后因构造运动     

西藏朗县蛇绿混杂岩中变辉绿岩和变玄武岩的年代学和地球化学

对西藏雅鲁藏布缝合带东段朗县混杂岩中的辉绿岩和玄武岩进行了岩石学、地球化学和SHRIMP锆石年代学研究.在早侏罗世(大约191 Ma B.P.)和侏罗纪最晚期到白垩纪最早期(大约146～148 Ma B.P.)分别有2幕岩浆活动;侵入于191.4±3.7 MaB.P.的变辉绿岩,是迄今为止在雅鲁藏布蛇绿混杂岩带发现的最...     

Postcranial evidence from early Homo from Dmanisi, Georgia

The Plio-Pleistocene site of Dmanisi, Georgia, has yielded a rich fossil and archaeological record documenting an early presence of the genus Homo outside Africa. Although the craniomandibular morphology of early Homo is well known as a result of finds from Dmanisi and African localities, data about its postcranial morphology are still relatively scarce. Here we describe newly excavated postcranial material from Dmanisi comprising a partial skeleton of an adolescent individual, associated with skull D2700/D2735, and the remains from three adult individuals. This material shows that the postcranial anatomy of the Dmanisi hominins has a surprising mosaic of primitive and derived features. The primitive features include a small body size, a low encephalization quotient and absence of humeral torsion; the derived features include modern-human-like body proportions and lower limb morphology indicative of the capability for long-distance travel. Thus, the earliest known hominins to have lived outside of Africa in the temperate zones of Eurasia did not yet display the full set of derived skeletal features.     

黄山山体的演化过程研究

本文指出黄山区褶皱运动不是在印支放因而是在燕山旋回中期，与黄山花岗岩浆侵入同步，发生子１２５Ｍａ左右．花岗岩体经长期缓慢上升和剥蚀作用于距今３０Ｍａ（渐新世中期）时形成了黄山顶部光明顶期夷平面．距今５Ｍａ（上新世）时形成了黄山第二层地貌面－老人峰期剥蚀面．第四纪初（距今约２．５Ｍａ）的喜马拉雅旋国第三幕时，该区花岗岩体呈断块大幅度抬升，使现代的黄山正处于青年期中山峡谷阶段．依据地貌特征、堆积物分析、孢子花粉组合、气候特征以及山顶上奇峰巧石等证据，表明黄山第四纪时期没有经历过冰川作用，黄山顶部仅遭受了寒冻作用．     

Paragenesia of Quaternary pediments and river terraces on the north piedmont of Wutai Mountains

A study has been made of the paragenetic relations of the pediments and river terraces on the northern piedmont of Wutai Mountains via geomorphologic mapping of 1:10000 scale, and an analysis on the role of tectonic, climatic, and drainage factors in the parageneses. The Quaternary pediments and river terraces on the north piedmont of Wutai Mountains united to constitute six steps of geomorphic surfaces. The episodic uplifting of fault blocks was the dominant factor in the formation of the unified surfaces, however climatic change and drainage diversities led to undulation of the surfaces. The second terrace of Yangyan River (T2) was formed in the last glacial maximum, when the river was in aggradational state. The third to fifth terraces were formed in interglacial stages, when the river was in equilibrium or degradational state. It is inferred that climate had no insignificant effect on the river incision caused by tectonic uplifting. In light of terraces dating, since the Quaternary the Wutai fault-block mountains experienced six rapid uplifting events, and the starting time of the last four events was respectively 1.2, 0.6, 0.13, and 0.02 Ma B.P.     

Carbon isotopic records in paleosols over the Pliocene in Northern China: Implication on vegetation development and Tibetan uplift

Carbon isotopic composition of pedogenic carbonate can be used to estimate the proportion of C₄ and C₃ plants. Here we present carbon isotopic data of carbonate in a red earth section at Xifeng, central Loess Plateau. Results show that C₄ vegetation increased in ∼4.4 Ma B.P., stabilized between 4.0 and 3.0 Ma B.P. The character and timing of C₄ expansion on the Loess Plateau are similar, but different with other localities, e.g. Pakistan and Africa, implying that regional climate changes were main factors driving the expansion of C₄ plants. This event is comparable in timing with increased aridity evidenced by Xifeng grain size and North Pacific eolian dust records. Therefore we argue that the Pliocene expansion of C₄ plants in northern China might have been caused by the increased aridity, which in turn might be related to rapid uplift of the Tibetan Plateau.     

论西藏蒿属植物区系

<正> In Xizang there are 57 species and 6 varieties under the genus Artemisia Linn, which can be divided into 2 subgenera and 6 sections (see P. 82-85).Sect. Absinthium of the genus Artemisia is possibly the most primitive, because the heads are bigger and the flowers on a head are numerous, over 40-100- The inner most flowers of the disk are sterile, the corolla of the outer flower (margine) is similar to the inner ones with 4 (not 2) corolla-teeth. Sometimes there are sterile androecia in the outer flowers. The receptacle is covered with hairs which are developed from the scales in the species of Tribus Heliantheae. Sect. Abrotanum arising from Sect. Absinthium is the intermediate with glabrous receptacle, and the advanced Sect. Artemisia may have arisen from Abrotanum. In this Sect, heads are small and flowers on each head are not very many (< 20). In South-West China (a plant refuge in the Age of Ice of the Quaternary), Sect. Viscidipubes Y. R. Ling may have arisen from Sect. Artemisia or Sect. Abrotanum, and has all the stems, branches, leaves and bracts of the heads clothed with glandular-hairs. With the exception of Subgenus Dracunculus arising from Subgenus Artemisia, Sect. Latilobus Y. R. Ling posseses broader leaf lobes and often occurs in the forest, while Sect. Dracunculus produces narrower leaf lobes and often occurs in the steppe or desert-steppe.Sect. Artemisia in Xizang migrated from the original centre of the genus, which occured possibly in the mountain regions of N. Asia by the middle of Tertiary Period and at the beginning of Quaternary Period. They migrated across C. Asia (East)-Mongolia (West), or through the Sichuan-Yunnan plateau secondary original centre into Xizang and even gave rise to many endemic species of Xizang (for the development system of Artemisia see Fig. 1).The floristical elements of Artemisia in Xizang are so diverse that they are to be summarized as follows: (table l)1. Holartic (subholartic) subkingdom.(1) Tertiary ancient endemic species.2 . Eurasia steppe or semidesert-steppe subkingdom.     

SHRIMP U-Pb zircon geochronology of granulites at Rimana （Southern Tibet） in the central segment of Himalayan Orogen

TheCenozoicHimalayanorogenisimportantinun-derstandingcontinentaldynamicprocesses.Lowercrustal,high-grademetamorphicrockshaverecentlybeendiscov-eredinNamcheBarwaandParmir,i.e.therespectivere-gionsofeasternandwesternsyntaxisoftheorogen[1—4].Eclogitesthatunderwentgranulite-faciesmetamorphismhaverecentlybeenreportedintheCadaareatotheeastofMountEverestinthecentralsegmentoftheHimalayanorogen[5].WiththehelpofthegeologicalsurveyofDing-gyeCountyandChentangSheets(scale1︰250000),high-pressuremafic…     

采用沉积地貌学方法分析"丁村组"的年代

自1954年发现“丁村组”化石至今，“丁村组”的年代长期存在很大争论。作者通过对S5以来临汾盆地地貌和沉积环境演化过程的研究，揭示出“丁村组”的堆积是在S1早期的一次区域构造抬升引起盆地湖退后才开始发生的，时间距今大约13万年。结合上覆“丁村组”的黄土古土壤分析，发现其堆积结束于距今约5.3万年。“丁村组”的堆积与气下S1古土壤的发育和L1黄土下半段的堆积几乎的同期的。