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| 1 | 放射性核素和纹理计年对比研究瑞士格莱芬湖近代沉积速率显示文摘本文利用纹理年代、核试验散落核素时标及^(210)Pb计年方法,对比研究了瑞士格莱芬湖中部的现在沉积速率。发现前两种方法给出了一致的结果,而^(210)Pb方法所获结果明显地偏低。在排除各种可能原因后,笔者认为产生上述现象的机理是:^(210)Pb通过孔隙水作用而从沉积物中扩散丢失。表层沉积物孔隙水中^(210)Pb及^(210)Po的测量,证实了上述假设。 | 万国江 P.H.Santschi M.Sturm K.Farrenkothen A.Lüeck W.Werth Chr.Schuler | 1986 | 地球化学1986,15,3: | 32 |
| 2 | 青藏高原东部兴措湖近0.2ka来的气候定量复原显示文摘根据青藏高原东部兴措湖沉积物总有机碳和有机碳同位素,以及腹足类Gyraulus sibirica壳体同位素和微量元素的分析,并与器测资料对比,分别建立了壳体氧同位素与夏半年气温、壳体Sr/Ca比与夏半年降水量间的函数关系.在此基础上,对研究区近0.2ka来的气温和降水变化进行了定量恢复.结果表明:(1)壳体Sr/Ca比与夏半年的降水量呈负相关,相关系数0.86;(2)壳体δ18O与夏半年滑动平均气温为正相关,相关系数0.89;(3)近0.2ka来夏半年气温和降水的变化明显存在有3个阶段,其中19世纪中后期降水量比现代高约220mm,夏半年气温比现今低约2℃;而20世纪最大降温时段降水量比现今低约60mm,夏半年气温比现代低约3℃;(4)近0.05ka来,研究区的气候呈现明显的暖干化趋势. | 吴敬禄 王苏民 李世杰 夏威岚 施雅风 G.H.Schleser A.Lücke | 2001 | 中国科学(D辑)2001,31,12: | 11 |
| 3 | Quantitative recuperation of climatic sequences for the last 200 years in Xingcuo Lake,eastern Tibetan Plateau显示文摘The functional relation between theδ18O values in the shell of gastropod Gyraulus sibirica and the air temperature in the warm half-yearly period, and that between Sr/Ca ratio and the precipitation in the warm half-yearly period were established by calibrating the δ18O and δ13C values, Sr/Ca ratio and Mg/Ca ratio in the shell Gyraulus sibirica, as well as the total organic carbon (TOC) and its δ13C values in the Xingcuo Lake sediment in the eastern Tibetan Plateau. The sequences of air temperature and precipitation in the last 200 years in the region were quantitatively recuperated on this basis. The results showed the following: (i) There was a negative correlativity between Sr/Ca ratio and the precipitation in the warm half-yearly period, its correlation coefficient was 0.86. (ii) There was an obviously positive correlativity between indexδ18O and the running average temperature in the warm half-yearly period, its correlation coefficient was 0.89. (iii) Evolution of the air temperature and the precipitation in the last 200 years can be divided into three phases distinctly. The precipitation in the later mid-19th century was 220 mm higher than that today; the air temperature in the warm half-yearly period was 2℃ lower than that of the present. The precipitation in the minimum air temperature period of the early 20th century was below that today by 60 mm, and the air temperature in the warm half-yearly period was 3.4℃ lower than that today. (iv) An evidently warming and drying trend existed in the last five decades. | 吴敬禄 李世杰 夏威岚 王苏民 A.Lücke 施雅风 G.HSchleser | 2002 | Science China Earth Sciences2002,45,9: | 4 |
| 4 | Evolution of the social network of scientific collaborations显示文摘 | A.L Barabási H Jeong Z Néda E Ravasz A Schubert T Vicsek | 2002 | Physica A: Statistical Mechanics and its Applications2002,,3: | 3 |
| 5 | Biosynthesis and secretion of plant cuticular wax显示文摘 | L Kunst A.L Samuels | 2002 | Progress in Lipid Research2002,,1: | 3 |
| 6 | 从融合性网状乳头瘤病分离出的一种新放线菌:Dietzia株X显示文摘Confluent and reticulated papillomatosis (CRP) is a rare skin disorder. To dat e its aetiology remains uncertain. The possibility of an infectious aetiology ha s been supported by case reports of therapeutic response to antibiotic therapy. We have isolated and identified a previously unknown Dietzia strain, an Actinomy cete, from skin scrapings of a 17-year-old boy with CRP. We propose that this organism may be the aetiological agent of CRP. Further investigations are necess ary to determine the potential role of this Actinomycete in the pathogenesis of CRP. | Natarajan S Milne D Jones A.L R.J. Koerner 罗素菊 | 2006 | 世界核心医学期刊文摘(皮肤病学分册)2006,0,1: | 2 |
| 7 | Liver cirrhosis and splenomegaly associated with Schistosoma mansoni in a Sudanese woman in Malaysia:A case report显示文摘We report a case of a patient with Schistosoma mansoni infection who presented with liver cirrhosis and splenomegaly.She was diagnosed by a serological test and Kato-Katz thick smear stool examination.The patient was a 52-year-old woman from Sudan who came to Malaysia for a week to visit her sons.The patient lives in the middle of Rabak region,Sudan,a highly endemic area for schistosomiasis where her daily routine includes rearing of cows and farming.The site of toilet and sources of drinking water are canals and wells;both infested with snails.Patient had a long history of exposure and coming into contact with water from these canals and wells. | Yamuna Rajoo Rohela Mahmud Ng Rong Xiang Sharifah F.S.Omar G Kumar Yvonne A.L Lim Arine Fadzlun Ahmad Amirah Amir Zurainee Mohamed Nor Romano Ngui | 2015 | Asian Pacific Journal of Tropical Medicine2015,8,4: | 2 |
| 8 | Structural and photoluminescent properties of the MgGa_(2)O_(4):Co^(2+)ceramic compound revisited after two decades显示文摘In this work,we revisit and show how the structural and photoluminescent properties of the MgGa_(2)O_(4) ceramic compound have been kept unchanged for more than two decades.The obtained results confirm the high quality,radiative efficiency,and chemical stability of this ceramic,proving that the material is a strong candidate to be used in optical device applications with relatively long useful life. | S.S.PEDRO M.A.F.M.DA SILVA A.LÓPEZ,L.P.SOSMAN | 2015 | Journal of Advanced Ceramics2015,4,4: | 2 |
| 9 | Seasonal variation in milk conjugated linoleic acid and Δ 9 -desaturase activity in dairy cows显示文摘 | A.L Lock P.C Garnsworthy | 2002 | Livestock Production Science2002,,1: | 2 |
| 10 | Reciprocal teaching of comprehension-fostering and comprehension-monitoring activities显示文摘 | Palincsar A.S Brown A.L | | 0,,01: | 1 |
| 11 | Minimizing the risk of reporting false positives in large-scale RNAi screens显示文摘 | Echeverri C.J Beachy P.A Baum B Boutros M Buchholz F Chanda K K Downward J Ellenberg J Fraser A.G Hacohen N Hahn W.C Jackson A.L Kiger A Linsley P.S Lum L Ma Y Mathey-Prevot B Root D.E Sabatini D.M Taipale J Perrimon N and Bernards R | | 0,,: | 1 |
| 12 | 查看详情显示文摘 | Daruka I TersoffJ Barabasi A.L | | 0,,: | 1 |
| 13 | The Silicon Valley-Hsinchu connection:technical communities and industrial upgrading显示文摘 | Saxenian A.L | | 0,,20: | 1 |
| 14 | Reciprocal teaching of comprehension-fostering and comprehension-monitoring activities显示文摘 | Palincsar A.S Brown A.L | | 0,,01: | 1 |
| 15 | Technical report:fallopian tube recanalization:a simplified technique显示文摘 | Millward SF Claman P LeaderA et a.l | | 0,,05: | 1 |
| 16 | The Social Network Ties of Group Leaders:Implications for Group Performance and Leader Reputation显示文摘 | Mehra A Dixon A.L Brass D.J Robertson B | | 0,,1: | 1 |
| 17 | Behavior in a Simplified Stock Market:The Status Quo Bias,the Disposition Effect and the Ostrich Effect显示文摘 | Brown A.L Kagel J.H | | 0,,01: | 1 |
| 18 | Exporting and performance: evidence from Chilean plants显示文摘 | RobertoAlvarez Ricardo A.López | 2005 | Canadian Journal of Economics/Revue canadienne d’économique2005,,4: | 1 |
| 19 | Influence of glyphosate on Rhizoctonia and Fusarium root rot in sugar beet显示文摘 | LARSON R.L HILL A.L FENWICK A | | 0,,: | 1 |
| 20 | CuO,ZrO2and ZnO nanoparticles as antiwear additive in oil lubricants显示文摘 | A. Hernandez Battez R. Gonzalez et a.l | | 0,,: | 1 |