参附注射液建立自发性高血压病大鼠肝阳上亢证模型的研究

目的：探讨参附注射液建立自发性高血压大鼠（SHR）模型的可能性。方法：将30只3月龄SPF级健康雄性自发性高血压大鼠称重，随机分为SHR组，附子汤组，参附注射液低、中、高剂量组，每组6只。各组采用对应药物灌胃进行模型制备，另取同品系同周龄雄性魏-凯二氏大鼠（WKY）6只作为正常对照组（WKY组）。观察参附注射液对SHR大鼠24h饮水量、易激惹程度、痛阈、睑结膜充血及收缩压的影响。结果：附子汤组及参附注射液中、高剂量组造模后均出现了易激惹程度增高、睑结膜充血程度增高、饮水量增多、痛阈降低、收缩压升高等肝阳上亢的表现，与WKY组及SHR组比较，差异有统计学意义（P<0.05)，表明造模成功。结论：参附注射液可以制备新型高血压肝阳上亢证模型，但是具体造模机制以及造模药物用量需待进一步探讨确定。     

Retrieving volume FeO and TiO_2 abundances of lunar regolith with CE-2 CELMS data using BPNN method

The volume FeO and TiO_2 abundances(FTAs) of lunar regolith can be more important for understanding the geological evolution of the Moon compared to the optical and gamma-ray results. In this paper, the volume FTAs are retrieved with microwave sounder(CELMS) data from the Chang'E-2 satellite using the back propagation neural network(BPNN) method. Firstly, a three-layered BPNN network with five-dimensional input is constructed by taking nonlinearity into account. Then, the brightness temperature(TB) and surface slope are set as the inputs and the volume FTAs are set as the outputs of the BPNN network.Thereafter, the BPNN network is trained with the corresponding parameters collected from Apollo, Luna,and Surveyor missions. Finally, the volume FTAs are retrieved with the trained BPNN network using the four-channel TBderived from the CELMS data and the surface slope estimated from Lunar Orbiter Laser Altimeter(LOLA) data. The rationality of the retrieved FTAs is verified by comparing with the Clementine UV-VIS results and Lunar Prospector(LP) GRS results. The retrieved volume FTAs enable us to re-evaluate the geological features of the lunar surface. Several important results are as follows. Firstly, very-low-Ti(1.5 wt.%) basalts are the most spatially abundant, and the surfaces with TiO_2 5 wt.% constitute less than 10% of the maria. Also, two linear relationships occur between the FeO abundance(FA) and the TiO_2 abundance before and after the threshold, 16 wt.% for FA. Secondly, a new perspective on mare volcanism is derived with the volume FTAs in several important mare basins, although this conclusion should be verified with more sources of data. Thirdly, FTAs in the lunar regolith change with depth to the uppermost surface,and the change is complex over the lunar surface. Finally, the distribution of volume FTAs hints that the highlands crust is probably homogeneous, at least in terms of the microwave thermophysical parameters.     

极地环境监测网的设计及其在南极普里兹湾的应用

为了保护南极和北极的生态系统和环境,中国自20世纪90年代初开始推行和实施了极地环境监测计划,部署了各学科监测传感器阵列;采集了多学科数据,包括海洋、大气、冰冻圈、生物圈等主题;架构了"R/V雪龙号破冰船—极地考察站—国内基地"之间的快速数据传输网络;建立了海洋环境监测系统、太阳能地面空间监测系统、生态环境监测系统等系列监测系统。为了实现长期监测,达到预测和预警目标,本文针对国内外现状,在现有基础上设计了一套中国极地环境长期监测网(Polar Environment monitoring network of China,CPEMN)。该监测网集成各监测系统并在监测指标设计上覆盖我国极地所有常规监测/观测任务,且根据国际科研动态和长期监测规划拓展了预期监测范围。最后本文利用南极普里兹湾进行的破冰导航应用示范验证了CPEMN具有可执行性。     

基于概率积分法的采动坡体稳定性预测与分析

地下采煤会引起地表沉降、变形,甚至引发山体、河堤滑坡等地质灾害。采动坡体的稳定性研究一直是采矿工程中实际关心的问题。该文首先介绍分析了概率积分法移动变形稳态、动态预测模型以及基于极限平衡理论的单滑面采动坡体稳定性预测模型,提出了使用概率积分法结合Knothe时间函数对采动坡体稳定性进行预测分析的方法,并使用C#及XML Schema语言编制了相关的计算程序。最后,结合一个工程实例对采动坡体稳定性和动态变化过程进行了预测与分析,通过实测数据验证了提出方法的可行性,得出了采动引起的坡体下沉是影响坡体稳定性的主要因素,并提出了在坡体拉伸阶段进行注浆加固的方法。     

基于熵权TOPSIS模型的海岛地区资源环境承载力研究——以舟山普陀区、定海区为例

随着海洋强国、"一带一路"、生态文明建设等国家战略的不断推进,海岛在国家政治、军事、经济、社会、生态中的地位不断提高,海岛开发、利用的规模越来越大,其生态保护也面临着新的挑战。本文依据资源环境承载力内涵,兼顾海岛资源环境特点,研究形成海岛地区资源环境承载力评价指标体系,综合应用熵权法、TOPSIS(逼近理想解排序方法)模型评价了典型海岛地区——普陀区与定海区2009-2015年间的资源环境承载力状况,结果表明:普陀和定海资源环境承载力水平呈稳步提升趋势,各个时期的环境保护政策和节能减排相关措施在环境保护与污染治理等方面起到了较为积极的作用。最后,在基于生态系统的海岛综合管理框架内提出了对策建议。     

全球盐湖卤水锂矿床的分布特征及其控制因素

盐湖卤水锂资源占全球锂矿总储量的78%,是全球最重要的一种锂矿床类型。研究并总结了全球盐湖卤水型锂矿床的分布特征、物质来源以及成矿规律,并提出了盐湖卤水型锂矿床成矿模型。研究发现,卤水型锂矿床的形成均受控于新构造运动、封闭-半封闭的低洼汇水盆地以及极端干旱的气候条件等因素,所有卤水型锂矿床均与新生代地质水热活动有密切关联,成矿物质特别是锂元素主要来源于火山喷发岩,经热泉水、温泉水以及大气降水等的水-岩作用后迁移富集。     

景观生态分类与制图浅议

本文在查阅分析大量文献和前人研究的基础上 ,对目前景观生态分类和景观制图作了详细的对比分析 ,认为景观分类需要结合实际区域现状 ,采用逐级分类的方法 ;同时利用 ETM遥感影像为数据源 ,以天山北麓为示范区.研制其土地利用土地覆盖变化的景观类型图。     

The relationship between the semi-major axis, mass index and age of the Leonid meteor shower

Owing to sublimation of ice, comet nuclei eject dust particles when they are near to the sun. Those particles assume velocities and then vary their orbits to ones similar to that of the comet. The most notable difference between the orbit of the parent comet and those of the particles is their semi-major axes. This difference (Δ a ) has been widely used in modern meteor shower predictions. Observational evidence of the distribution showed that it is a function of Δ a , and the age of the dust trail. However, the relation is not well known. In this paper, a simplified relation between Δ a , the mass index ( s ) and the age of the dust trail is presented, taking the instance of a recent Leonid meteor shower.     

中国1∶100万景观生态制图设计

中国1∶100万景观生态图系借鉴国内外传统景观制图方法和制图规范,在遥感、地理信息系统先进技术的支持下,设计研制其制图方法、制图内容、样图和技术流程,同时提出初步的景观分类系统,为今后编制中国1∶100万景观生态图奠定基础。     

沂水崔家峪玻璃用石英砂岩矿地质特征

沂水崔家峪玻璃用石英砂岩矿床赋存于早寒武世李官组砂岩段中．呈近水平的层状产出。因其岩石坚硬．矿体呈环山的平台状分布。矿体厚度大，矿石品级高，特级品矿石二氧化硅平均含量98．47％，铁杂质平均含量0．043％(选矿后，铁杂质含量可降至0．02％以下)，为一优质玻璃硅质原料矿床。矿石为细一中粒石英砂岩，粒度以中粒为主，矿石由碎屑颗粒和胶结物组成，碎屑成分含量为97％～98％．其中绝大部分是石英颗粒．具典型的砂屑结掏。该矿床属滨海陆源沉积矿床。