Stomatocysts of Chrysophytes in Lake Shira

The chrysophytes are distributed over all the continents.As a rule,these are planktonic,freshwater,cold-water inhabitants.There are as well saltish-water chrysophytes species of genera Chrysococcus,Dinobryon,

Lake Shira Level Changes in Late Holocene

1 Introduction Meromictic Shira Lake is a good represfor detail climate modeling due to its locainformation and annually laminated bottomsediment column of 155 cm in length wahammer corer in the deepest(24 m)central in 2009.2 Sample Preparations and Measuring

Geochemical signal of seasonality in annually laminated organic- carbonate sediments in Shira lake(Khakasia)

1 Introduction The most valuable for the task of climate reconstruction are the time series with an annual resolution,which allows to reveal natural periodicity and pass to the search for mechanisms of regional and global climatic changes.Bottom sediments of lakes are one of the best climate archives in addition to tree ring series,ice cores etc.

Cryptophyta Flagellates of Meromictic Lakes Shira and Shunet(Khakassia,Russia):Mechanisms of Vertical Distribution and Trophic Role

1 Introduction Many of the stratified lakes are characterized by the presence of large populations of cryptomonads in their chemocline zones(Reynolds,1992;Gervais et al,2003;Pedro’s-Alio’et al.,1995).These populations are adapted to low light intensity and high sulfide concentration;they have a mixotrophic ability and form the so-called"deep chlorophyll maxima"(Gervais,1998;Marsha"and Laybourn-Parry,2002).A similar Cryptomonas sp.

秘鲁Ucayali盆地石油地质特征与油气成藏

基于对Ucayali盆地油气成藏要素的系统解剖,预测盆地内除已发现的逆冲背斜/断背斜外,还可能发育伸展断块、潜山、生物礁、地层尖灭、河道砂及逆冲断层下盘构造等多种圈闭类型,自西向东前展式推覆的逆冲背斜/断背斜为最主要的圈闭类型。前陆运动前盆地构造圈闭发育程度低,现今原油聚集多属前陆运动后二次调整成藏,淡水侵入使浅部油藏普遍遭受轻度降解。由于Shira隆起的分隔作用,西部次盆现今生成的烃类很难运移至东部圈闭中。而东部次盆烃源岩埋深小,Ene组展布面积有限,Ambo群趋于生气,在生油窗内生成的液态烃类相对有限,加之圈闭不断生长,圈闭充满度较低。同时,活动性断层对烃类侧向运移不利,其东侧的背斜圈闭往往无法得到有效充注,形成大规模原油聚集的潜力较小。南部和西部次盆成藏条件配置好,逆冲褶皱发育,圈闭可得到烃类持续充注,主要以天然气为主;南部次盆逆冲断层下盘构造圈闭为重要潜在勘探目标;Ene次盆勘探程度低,烃源岩品质好,仍有发现大型构造圈闭的潜力。

白木器物文化历程中里程碑式经典之作

为确立白木器物文化在木材种群文化范畴中的地位,进一步在繁荣白木文化、促进白木产业健康发展过程中树立文化自信,首先从解剖特征、物理特性和视觉特性三个方面阐述了白木之自然属性,讨论了白木与非白木文化特征及其表征,进而比较了两者之间的差异。最后,从白木特性、白木器物加工技艺、白木器物文化特征等视角出发,系统地论述了狭义白木器物文化发展历程中里程碑式经典作品的深邃内涵与精华之处。

白木的概念及其文化特征

对白木概念及其基本文化特征进行探析。基于白木肌理解剖特征、感觉特性,讨论了白木狭义概念与广义概念;在白木广义概念范畴内,归纳了白木器物悠长的文化历程;以佛像用材从阔叶树材向针叶树材转变过程为线索,探讨了白木文化生成路径及其转折点;以观念文化为主线阐述了白木文化结构特征;基于此,比较了白木文化与红木文化特征之间主要差异。

东部裕固语带擦元音

东部裕固语带擦元音出现在后音节为q^h或k^h等辅音开头词语当中,即带擦元音音节的后续辅音都是k,q辅音,其声学表现为除元音共振峰外,其后段伴有较强的摩擦成分。带擦元音在东部裕固语中没有承担语义区分功能,是一种条件变体。东部裕固语带擦元音是反映着辅音q^h~k分化(~h/q^h)阶段的演变形式。在蒙古语科尔沁土语中有■:"肉脑袋"和■:"猪头"等词。其中,■形式可能比东部裕固语■要晚,比蒙古语标准语■要早。东部裕固语■在蒙古语科尔沁土语中演变为■形式,在蒙古语察哈尔土语中演变为■形式。