新公式计算岩层真厚度的Excel算法     

徐少康 《化工矿产地质》2007,29(4):222-226

使用软件1,将岩层序号、导线的方位和倾角、岩层的倾向、倾角和两层面切割导线处的读数分别输入A、F、G、H、I、J、K列,先后分别沿M、N列从第2行单元格开始拖动鼠标,岩层真厚度数据和累积厚度即刻计算出来,进一步可计岩组或岩性段的真厚度;将导线的序号、方位、倾角、长度分别输入W、X、Y、Z列,先后分别沿AB、AC、AD、AE、AF、AG、AH列,从第2行单元格开始拖动鼠标,导线的水平投影长度、纵座标增量及其累积值、横座标增量及其累积值、高程增量及其累积值即刻计算出来。使用软件2,在输入原始数据的同时,结果便计算出来。  相似文献   

黑龙江省空中云水资源开发现状分析与展望     

张焕昭  徐东亮  刘海群 《黑龙江气象》2007,(1):10-11,14

自1995年开始,黑龙江省进入建国后的第二个干周期。黑龙江省云水资源比较丰富,据专家分析,每年通过人工影响天气作业平均增水约为5×108m3左右,仅占空中可利用水资源的0.2%,空中云水资源的开发潜力十分巨大。加强空中云水资源的开发利用,对缓解黑龙江省水资源短缺困境、推动地方社会经济发展意义重大。  相似文献   

雅安雨量站站网布设优化试验     

吴薇  杜冰  周春花  黄晓龙  郭旭 《气象科技》2023,51(6):805-814

雨量监测的准确性对天气预报、气候变化、服务决策、防灾减灾等有着重要的影响和意义,而雨量站网布设直接影响雨量监测的准确性。选取四川省雅安市作为研究对象,在现有站网布设的基础上,采用相关性分析,提出基于抽站的站网布设优化方法,并对抽站后的站网布设合理性进行评价。结果表明：(1)雅安雨量站有265站,各站点的控制面积为2.64～510.78 km²,邻近站间距离为0.3～12.28 km,邻近站间降水相关系数为0.62～0.993;(2)逐次抽站后,雨量站控制面积和邻近站间距离逐渐增大,邻近站点间降水相关系数逐渐减小;(3)抽站后站网面雨量与原站网面雨量较一致,误差较小,泰森多边形法面雨量变化幅度小于算术平均法;(4)从降水过程来看,各次抽站后,降水落区和各量级降水范围基本一致,站网对降水极值的捕捉能力较好,误差较小,但随着站点数的减少,对于降水形态刻画的精细程度有所下降。  相似文献   

Characterization of a new lectin involved in the protoplast regeneration of <Emphasis Type="Italic">Bryopsis hypnoides</Emphasis>     

牛建峰  王广策  吕芳  周百成  彭光 《中国海洋湖沼学报》2009,27(3):502-512

A group of coenocytic marine algae differs from higher plants,whose totipotency depends on an intact cell(or protoplast).Instead,this alga is able to aggregate its extruded protoplasm in sea water and generate new mature individuals.It is thought that lectins play a key role in the aggregation process.We purified a lectin associated with the aggregation of cell organelles in Bryopsis hypnoides.The lectin was ca.27 kDa with a pI between pH 5 and pH 6.The absence of carbohydrate suggested that the lectin was ...  相似文献   

Wavelet analysis and nonparametric test for climate change in Tarim River Basin of Xinjiang during 1959–2006     

Jianhua Xu  Yaning Chen  Weihong Li  Minhe Ji  Shan Dong  Yulian Hong 《中国地理科学(英文版)》2009,19(4):306-313

Using wavelet analysis, regression analysis and the Mann-Kendall test, this paper analyzed time-series (1959–2006) weather data from 23 meteorological stations in an attempt to characterize the climate change in the Tarim River Basin of Xinjiang Uygur Autonomous Region, China. Major findings are as follows: 1) In the 48-year study period, average annual temperature, annual precipitation and average annual relative humidity all presented nonlinear trends. 2) At the 16-year time scale, all three climate indices unanimously showed a rather flat before 1964 and a detectable pickup thereafter. At the 8-year time scale, an S-shaped nonlinear and uprising trend was revealed with slight fluctuations in the entire process for all three indices. Incidentally, they all showed similar pattern of a slight increase before 1980 and a noticeable up-swing afterwards. The 4-year time scale provided a highly fluctuating pattern of periodical oscillations and spiral increases. 3) Average annual relative humidity presented a negative correlation with average annual temperature and a positive correlation with annual precipitation at each time scale, which revealed a close dynamic relationship among them at the confidence level of 0.001. 4) The Mann-Kendall test at the 0.05 confidence level demonstrated that the climate warming trend, as represented by the rising average annual temperature, was remarkable, but the climate wetting trend, as indicated by the rising annual precipitation and average annual relative humidity, was not obvious.  相似文献   

Effects of salinity fluctuation amplitudes on growth, osmolarity, Na＋-K＋-ATPase activity and Hsp70 of juvenile Chinese shrimp Fenneropenaeus chinensis Osbeck     

丁森  王芳  董双林  高勤峰 《中国海洋湖沼学报》2009,27(4):723-728

The effects of various salinity fluctuation amplitudes (2, 4, 6 and 8) on the growth, osmolarity, Na⁺-K⁺-ATPase activity and Hsp70 of juvenile Fenneropenaeus chinensis cultured in seawater with a salinity of 20 were studied. The results show that weight gain in the salinity fluctuation treatments was better than that in control; in particular, the weight gain of treatments S4 and S0, at 231.8% and 196.3%, respectively, was significantly different (P<0.05). The hemolymph osmolarity of treatments S0, S2, S4, S6 and S8 was 635.4, 630.8, 623.6, 614.4 and 600.3 mOsm/kg, respectively, and decreased with increasing salinity fluctuation amplitude. The level of Na⁺-K⁺-ATPase activity in gills of F. chinensis was higher than that in hepatopancreas, but there were no significant differences among all treatments, either in gills or hepatopancreas (P>0.05). The relative level of Hsp70 in treatment S4 was 48.4% and 40.4% higher than control in muscle and eyestalks, respectively, with the highest values being recorded under a salinity fluctuation amplitude of 4.  相似文献   

关于深化济南市矿产资源整合工作的思考   总被引：2，自引：2，他引：0       下载免费PDF全文

徐孟军  潘春光 《山东国土资源》2009,25(4)

2005年下半年,国务院开展了全面整顿和规范矿产资源开发秩序工作。通过近3年综合整治,济南市在“治乱、治散、治本”上均取得明显成效,矿产资源开发秩序逐步规范。其中,章丘煤矿资源整合工作成效显著,受到国家和省有关部门的充分肯定,并作为先进经验在全国范围内进行了交流和推广。非煤矿产资源整合工作也取得明显进展,按照《济南市矿产资源整合方案》要求,  相似文献   

Effects of Salinity Fluctuation Frequency on the Growth, Molting Rate and Hemolymph 20-Hydroxyecdysone Concentration in Juvenile Chinese shrimp, Fenneropenaeus chinensis     

DING Sen  WANG Fang  SUN Hao  DONG Shuanglin 《中国海洋大学学报(英文版)》2009,8(3)

This experiment was conducted to examine the effects of salinity fluctuation frequency on the growth, molting rate and hemolymph 20-hydroxyecdysone (20-HE) concentration for juvenile Fenneropenaeus chinensis with an initial wet body weight of 1.115 g±0.012 g. The salinity of the control treatment (represented by D0) was 28 throughout the experiment, whereas treatments D2,D4, D6 and D8 were subjected to different salinity fluctuation frequencies of 2, 4, 6 and 8d, respectively. The range of salinity fluctuation was 4. The salinity in treatments D2, D4, D6 and D8 was kept at 28 for 2, 4, 6 and 8d, respectively; each original salinity was decreased abruptly to salinity 24, which first lasted for another 2d and was then raised to its initial value 28. This constituted a salinity fluctuation cycle and afterwards the cycle repeated. It was found that: 1) The weight gain of shrimp in treatment D4 was 202.9% and significantly higher than that in treatment D0 (P<0.05). The molting rate in treatment D2 was the lowest, while that in treatment D6 was the highest and significantly higher than those in treatments D0 and D2 (P<0.05). 2) The hemolymph 20-HE concentration of shrimps in all treatments was at low levels and increased first gradually during the inter-molt period and then increased sharply. It reached a peak value during the pre-molt stage, and then decreased abruptly during the post-molt stage when the lowest level occurred. 3) During the post-molt stage, the hemolymph 20-HE concentration in treatment D2 was 7.47pgμL-1 and significantly higher than that in treatment D0(P<0.05). There were, however, no significant differences in hemolymph 20-HE concentration among all five treatments during the inter-molt stage (P>0.05). During the pre-molt stage, the hemolymph 20-HE concentration in treatment D6 was significantly higher than that in treatment D0(P<0.05), whereas the hemolymph 20-HE concentration in treatment D2 was significantly lower than that in other treatments (P<0.05). Adequate salinity fluctuation promoted the molting rate through increasing hemolymph 20-HE concentration at the pre-molt stage.  相似文献   

Adaptation management of mountain tourism service: the case of the source regions of the Yangtze and Yellow River     

Yiping Fang  Dahe Qin  Yongjian Ding  Jianping Yang 《山地科学学报》2009,6(3):299-310

Mountain areas are often rich in ecological diversity and recreational opportunities. Mountain tourism is thought to be an effective and important means for maintaining and expanding rural economies and, thus, improving the living conditions of rural societies. As mountain tourism service research is a professional field with several disciplines involved, a multi-disciplinary management pIatform is needed and it facilitates participation in sustainable mountain development by diverse stakeholders. With the source regions of the Yangtze and the Yellow River as a case study, this paper presents a conceptual framework for an adaptation management of mountain tourism services according to technical, policy, social and economic dimensions. The framework is based on a vulnerability assessment of mountain ecosystems, and can serve as a reference for the development of tourism service in other mountain areas.  相似文献   

莒县三措并举切实搞好耕地保护工作          下载免费PDF全文

卢守润  方和玲  王祥福 《山东国土资源》2009,25(2)

损毁山体严重影响城市和交通沿线景观,景观影响度可作为一个综合指标来反映损毁山体对城市景观的影响程度。应用专家评分综合评判法结合地理信息系统确定景观影响度分级标准,对损毁山体进行景观影响程度的评价与分析,得出景观影响度分类结果,为损毁山体的治理规划和有序整治提供科学依据。  相似文献