“天气在线”网上气象站对郑州单点要素预报能力的检验

对“天气在线”网上气象站所预报的郑州市2004和2005年的汛期(6~8月)降水、最低气温、最高气温3项气象要素的准确率进行了检验与分析,结果表明:“天气在线”对郑州市一般降水的预报准确率具有参考价值,对中雨及以上量级的降水预报能力比较差,尤其是对单站暴雨预报能力更弱;对郑州单点的温度预报能力很强,特别是晴天的情况下,不论是最高温度、最低温度还是高温天气都有很高的预报准确率。     

昌福山矿区7-12钻孔抽水实验数据的分析及应用

通过对 7-12 钻孔抽水试验数据的分析,认为昌福山矿区水文地质条件为中等类型,含水层富水性弱,煤系地层补给条件差,并获得了水文地质参数预测未来本矿井涌水量,对矿区煤炭开采具有一定的指导意义.     

The investigation of Baker's Hole, Northfleet, Kent, 1909-1914; the impact of collection history upon the interpretation of archaeological data

The site of Baker's Hole in the Ebbsfleet valley, Kent, is the best-known British Early Middle Palaeolithic (MIS 9-7) site, and has produced a substantial assemblage of Levallois artefacts. The history of this collection, however, has become confused over the years, with some suggestions that it was actually amassed through excavation. This paper reviews the history of investigations at the site, on the basis of archive letters and records, and demonstrates that it was clearly collected by quarry workers. This clarification has important implications for understanding human activity in the Ebbsfleet valley during late MIS 8/early MIS 7.     

新西兰2010年M7.1地震与2011年M6.3地震活动和灾害分析

本文对新西兰.2010年9月4日M7.1地震(国际标准时间)与2011年2月22日(国际标准时间)M6.3地震活动和灾害情况进行了分析,用同震位移方法计算了两次地震的地震烈度,结果表明尽管两次地震震级相差较大,但由于M6.3地震震源深度较浅,两次地震在地表的烈度相同.本文用主余震序列方法计算了两次地震的断层滑动参数,结...     

地质钻探高强度铝合金钻杆研制及其应用

铝合金钻杆的设计制造技术属高新技术范畴,世界上只有俄罗斯、美国等少数发达国家能够批量生产。简要介绍了我国地质钻探用铝合金管材研制、铝合金钻杆制造关键技术及野外试验情况,并对今后铝合金钻杆的研发和应用方向提出了建议。项目工作成果对今后我国开发特深孔铝合金绳索取心钻杆和超深孔铝合金钻杆具有重要价值。安徽彭桥煤矿区的铝合金钻杆钻探试验最大孔深超过1000 m,应用效果良好,开辟了我国地质钻探铝合金钻杆在中深孔应用的先河。     

Particle dynamics of Be,Pb and the implications of sedimentation of heavy metals in the Wenjiao/Wenchang and Wanquan River estuaries,Hainan, China

Radionuclides (i.e., ⁷Be and ²¹⁰Pb) can be used to trace particle and sediment dynamics and to quantify coastal oceanic processes with time scales ranging from a few days to a hundred years. Here, we study the settling dynamics of suspended particles and the implication by sedimentary heavy metals in the Wenjiao/Wenchang River and Wanquan River estuaries through the measurement of the particulate ⁷Be and ²¹⁰Pb nuclides. Activity in the particulate phase had a range of 2.1–54.5 and 4.6–67.9 Bq kg⁻¹ for ⁷Be and excess ²¹⁰Pb (²¹⁰Pb_xs), respectively, in the Wenjiao/Wenchang River estuary. In the Wanquan River estuary, activity is in the range of 1.2–43.5 Bq kg⁻¹ for ⁷Be and 6.2–194.5 Bq kg⁻¹ for ²¹⁰Pb_xs. At the same time, activity in the dissolved phase had a range of 0.46–1.26 and 0.30–1.17 Bq m⁻³ for ⁷Be and ²¹⁰Pb, respectively, in the Wenjiao/Wenchang River estuary; ranges of 0.10–2.31 and 0.09–1.87 Bq m⁻³ for ⁷Be and ²¹⁰Pb, respectively, were observed in the Wanquan River estuary. The distribution coefficients (K_d) for the two nuclides decreased within increased in suspended particle matters (SPM) concentration and/or salinity in Wanquan River estuary. The residence times of particulate ⁷Be and ²¹⁰Pb_xs had ranges of 0.4–1.6 and 1.65–5.15 days, respectively, in the Wenjiao/Wenchang River estuary; and ranges of 0.02–3.2 and 0.61–4.44 days, respectively in the Wanquan River estuary. All residence times for the two nuclides increased in the seaward direction. In the Wenjiao/Wenchang River estuary, we found that 11.8–21.0% of Cu, 3.0–9.0% of Zn and 43.2–69.9% for Cd is removed from the water column and deposited into the estuary, and 24.2–34.8% for Cu, 7.2–23.8% for Zn, and 70.0–82.5% for Cd in the Wanquan River estuary, respectively.     

生物炭催化过硫酸盐脱色偶氮染料金橙Ⅱ

生物炭作为一种廉价易得的材料,在土壤修复等各方面的功能已引起广泛关注,但其催化作用却鲜有研究。首次对生物炭(biochar-BC)催化过硫酸盐(Na2S2O8-PS)使偶氮染料金橙Ⅱ(AO7)脱色的可行性进行研究,对影响催化体系脱色效率的因素(包括pH、生物炭质量浓度和PS/AO7摩尔比)进行探讨,同时研究了生物炭的重复利用效果及前后性质变化。结果表明:PS/BC体系明显比单独的PS体系脱色效果好;两个反应体系都遵循一级反应动力学;PS/BC体系反应的最适pH接近中性;生物炭质量浓度越大,脱色效果越好;PS/AO7摩尔比越大,脱色效果越好,但是催化效果却没有相应的改善;生物炭重复利用后对AO7仍然有脱色效果;BC的孔大多位于层状结构表面,且为小孔,重复使用后,表面孔会堵塞;除了灰分和氧元素外,其他元素(C、N、H、S)含量都有一定程度的减小;BC表面官能团种类很多,主要有C=O、C=C、C-O、C-H,芳香族C=C和C-H以及-OH官能团;BC重复使用后-OH峰会消失。综上述,生物炭可以催化过硫酸盐对偶氮染料AO7进行脱色,原理是BC表面的-OH官能团与PS反应生成硫酸根自由基去除AO7。     

鄂尔多斯盆地长_7油层组与张家滩页岩的关系

鄂尔多斯盆地内中—晚三叠世形成的一套河—湖相沉积物的含油气层系的延长群含油气层系,由十个油层组(长1-长10)组成,其中长7油层组位于张家滩页岩之上,为胡家村组的下段,张家滩页岩的层位是铜川组的顶部,与其对应的是长8油层组。     

深圳市大气7Be含量分布及其示踪意义

研究分析了2011年10月至2012年5月期间深圳市大气气溶胶中7Be的含量变化及影响因素。深圳市7Be的含量范围为0～7．6mBq／m3,平均值为3．1mBq／m3,气象条件中降雨对大气7Be的影响最大,而温度以及大气颗粒物PM2．5与7Be的相关性不明显。在春季月份期间,大气7Be比活度与近地面O3的含量变化吻合良好,提示7Be可用于示踪平流层臭氧向地表的动力输送。     

The massive Wolf–Rayet binary SMC WR7

We present a study of optical spectra of the Wolf–Rayet star AzV 336a (=SMC WR7) in the Small Magellanic Cloud. Our study is based on data obtained at several Observatories between 1988 and 2001. We find SMC WR7 to be a double-lined WN+O6 spectroscopic binary with an orbital period of 19.56 d. The radial velocities of the He absorption lines of the O6 component and the strong He  ii emission at λ 4686 Å of the WN component describe anti-phased orbital motions. However, they show a small phase shift of ∼1 d. We discuss possible explanations for this phase shift. The amplitude of the radial velocity variations of He  ii emission is twice that of the absorption lines. The binary components have fairly high minimum masses, ∼18 and 34 M_⊙ for the WN and O6 components, respectively.