Testosterone secretion by Mongolian gerbil interstitial cells during short-term incubation depends on androgen precursors and serum proteins but not on gonadotrophins

Summary Interstitial cells from the testes of the Mongolian gerbil have been used to investigate the effects of serum proteins on testosterone production stimulated by hCG and steroidal precursors. Short-term incubation of interstitial cells with progesterone or DHEA resulted in a rapid increase of testosterone secretion; this effect was even more pronounced in the presence of calf serum. On the other hand, addition of hCG (10 mIU) had no significant effect on testosterone release during the 30-min incubation. These results demonstrate that the magnitude of the steroidogenic response of short-term incubated interstitial cells is a complex function, mainly of precursor concentrations and binding capacities of serum proteins but not of gonadotrophins.8 October 1986     

周原地区新生代地貌特征略论

周原地区新生代的地貌特征可由其现代地貌和基岩古地貌表现出来。其现代的地貌特征是西北升高向东南倾斜。由于(氵韦)河分割,周原地区分成南北两大部分,北部属于周原本身地区而缩小破碎;南部属于分割后的积石原地区,而其南北两缘又有“稍稍隆起”或突起的特点,原面略呈瓦状浅凹平形由西北斜向东南。这是大约在早第三纪到晚第三纪这一时期形成的。它又是由新构造运动的“波浪式发展”所造成的,并反映了“有怎样的黄土塬地形就有怎样的基岩古地貌”原理。     

试论《蒙古-卫拉特法典》对蒙古社会的法律调控

《蒙古-卫拉特法典》是17世纪蒙古社会内忧外患历史条件下的产物。从社会学法学的角度入手,结合具体的社会历史背景,运用法条解释法对《法典》文本进行了解析,阐述了《法典》主要通过调控部族关系、军事攻防、宗教信仰和统治秩序四方面来化解蒙古社会的危机。     

青藏高原中部似大地水准面精化的应用研究

介绍了精化似大地水准面的常用方法.采用青海和西藏三级GPS大地控制网测量数据,按移动曲面法、改进的移动曲面法、二次曲面拟合法和改进的二次曲面拟合法对青藏高原中部似大地水准面进行了拟合计算.结果表明,利用改进的移动曲面法和改进的二次曲面法能有效地改善本地区似大地水准面的精化效果,精度优于0.5m.     

小儿耳脉诊断病理生理基础之探析

应用小儿耳后动静脉解剖学、生理学与病理生理学理论，阐述了蒙医儿科临床传统诊断方法——耳脉诊断法的科学性，并提出了人体微循环病理生理机制是小儿耳脉诊断方法之理论基础的论点．     

蒙古族传统体育——那达慕文化变迁研究

通过对那达慕表层文化与深层文化变迁及发挥那达慕文化资源优势等方面的论证，认为对那达慕文化资源的振兴与开发，应注重挖掘蒙古族传统体育文化资源，既要积极抢救即将消失的优秀民族文化遗产，也要努力开发民族文化资源，从而实现那达慕文化与社会经济之间、传统文化与现代文化之间的互动。     

基于LEGOS HYDROWEB的青藏高原湖泊群水位和面积动态变化分析

湖泊面积和水位的变化客观地反映了区域水资源的时空变化过程。利用LEGOS HYDROWEB提供的湖泊信息数据,对青藏高原1993~2014年21年间63个典型湖泊的水位变化,以及其中59个湖泊的面积变化趋势进行分析。根据变化趋势将湖泊分为增长型、稳定型和衰退型;并在这三种类型的湖泊中分别选取两个典型湖泊进行回归分析。结果表明:63个湖泊中水位增长型湖泊42个,稳定型湖泊12个,衰退型9个;59个湖泊中面积增长型湖泊32个,稳定型19个,衰退型8个。对于增长型湖泊而言,水位和面积增长最大是Ziling湖,分别增长了10.90 m和361.72 km~2;衰退型湖泊中水位和面积衰退趋势最大的是Yamzho-yumco湖,分别减少了2.29 m和28.65 km2。高原内陆水体的水位和面积的动态变化对研究气候演变和地表水资源的影响具有重要意义。     

蒙古气旋影响的北方沙尘暴天气气象条件分析

利用常规气象观测资料,对2011年4月28日至30日发生在西北、华北区的沙尘暴过程进行了分析。     

Changes in palaeoproductivity of Genggahai Lake over the past 16 ka in the Gonghe Basin, northeastern Qinghai-Tibetan Plateau

Sequential samples of a 7.82-m sediment core from Genggahai Lake in the central Gonghe Basin,controlled with 12 accelerator mass spectrometry (AMS) 14 C dates,have been analysed for total organic carbon (TOC) and total nitrogen (TN) contents,carbon isotope of bulk organic matter (δ 13 C org),and carbonate content.Plant macrofossils and stem encrustations,derived mainly from the species of P.pectinatus,M.spicatum and Chara spp.,were identified,and they dominated the aquatic plant community of the lake.Alternations of plant macrofossils of Chara spp.and the vascular species reflect the changing productivity of the lake over time.In such a shallow lake,the carbonate content is highly related to photosynthesis of aquatic macrophytes and thus indirectly indicates variations in productivity,consistent with a quantitative estimate of palaeoproductivity.Based on these results,the palaeoproductivity history was reconstructed over the past ca.16 ka.The lake was formed or recharged at 15.3 cal ka BP,as indicated by aeolian sand deposits at the core base.A marked increase in palaeoproductivity occurred from 15.3 to 11.6 cal ka BP.Between 11.6 and 9.2 cal ka BP,a sharply increased water-level,modulated probably by the enhanced Asian summer monsoon,might have exceeded the optimum water depth for macrophyte vegetation,causing a marked decline in coverage of aquatic macrophytes and low palaeoproductivity.The palaeoproductivity appeared to be high in the early stage of the period from 9.2 to 7.4 cal ka BP,and then decreased at approximately 8.6 cal ka BP.The palaeoproductivity sustained an overall high level between 7.4 and 2.1 cal ka BP,and decreased gradually since 2.1 cal ka BP.Our results suggest that the variability of Genggahai Lake palaeoproductivity may be associated with fluctuations of the lake level controlled by the strength of the Asian summer monsoon,probably indicating changes in the Asian summer monsoon.     

以蒙生毕业论文为基点,传承创新科尔沁体育文化——以内蒙古民族大学为例

科尔沁体育文化是科尔沁文化百花园中一朵瑰丽的奇葩,研究科尔沁体育文化也就是对科尔沁蒙古族体育文化进行研究.内蒙古民族大学的蒙古族大学生虽然绝大多数来自于科尔沁草原,但他们对本民族的体育文化却知之甚少,要想承担起传承、创新本民族体育文化的重担,真可谓任重道远.本文在分析研究蒙生毕业论文的基础上,提出了对策与建议,为民族高校的体育教学和区域文化的传承发展提供可资借鉴的资料.