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| 1 | 新媒体联盟地平线报告:2016高等教育版显示文摘《新媒体联盟地平线报告:2016N等教育版》由美国新媒体联盟授权北京开放大学进行中文版翻译和官方发布。这是北京开放大学连续第5年对地平线系列报告进行翻译。同往年一样,本报告利用德尔菲法,根据5大洲16个国家的58位教育和技术专家的投票结果,预测了2016-2020这五年期间加速高等教育技术采用的关键趋势、阻碍高等教育技术采用的重要挑战以及高等教育中教育技术在教与学及研究中应用的重要进展。本年度地平线报告中文版将全文作为开放教育资源上传到新媒体联盟的官方网站,也会通过报纸、微信公众号等渠道进行传播。 | L.约翰逊 S.亚当斯.贝克尔 M.卡明斯 V.埃斯特拉达 A.弗里曼 C.霍尔 殷丙山 高茜 赵广元 李院春 李志强 冯振振 | 2016 | 开放学习研究2016，21，2： | 68 |
| 2 | 婴幼儿卒中的处理:来自美国心脏协会卒中委员会和青少年心血管病委员会专门写作组的科学声明显示文摘目的:本声明旨在回顾有关儿童卒中的文献,为最佳的诊断和治疗提供推荐意见,供负责诊断和治疗婴儿、儿童和青少年脑血管病的医生使用。方法:写作组成员由美国心脏协会卒中委员会科学声明监督委员会任命,由多个不同领域的专家组成。应用美国心脏协会卒中委员会的证据分级标准对每条推荐意见进行分级。在经过小组成员审查后,草稿由4位同行评议专家和卒中委员会指导委员会成员审阅,并由美国心脏协会科学咨询和协调委员会批准。我们预计该声明需在4年内进行更新。结果:为镰状细胞病、烟雾病、颈一脑动脉夹层分离和心源性栓塞引起的缺血性卒中的预防提供循证推荐,同时为出血性卒中的评价和处理提供推荐意见。提出儿童使用肝素和华法林的剂量方案。另外,还为围产期卒中和儿童脑静脉窦血栓形成的评价和处理提供推荐。 | E.Steve Roach(著) Meredith R. Golomb(著) Robert Adams(著) Jose Biller(著) Stephen Daniels(著) Gabrielle deVeber(著) Donna Ferriero(著) Blaise V. Jones(著) Fenella J. Kirkham(著) R. Michael Scott(著) Edward R. Smith(著) 刘丽芳(译) 王胜男(译) 王伟(译) 林镇洲(译) 朱佳佳(译) 潘速跃(译) | 2008 | 国际脑血管病杂志2008，16，11： | 60 |
| 3 | 北京石景山工业区附近一个污染土壤剖面的磁学研究显示文摘对北京西郊石景山工业区附近的土壤剖面进行环境磁学研究,结合粒度、金属元素分析、磁学指标测试和多元统计分析,发现磁参数(χ,ARM,SIRM)与重金属元素(Mn,Cu,Fe,Pb,Zn,Al,Sr)含量呈同步垂向变化趋势.来源于工业区附近工业生产排放(钢铁厂、发电厂、水泥厂)的污染物是土壤剖面上部(0-3cm)磁性和金属含量增强的主要原因,由富集在细粉砂和中粉砂的多畴磁铁矿主导了样品的磁性特征.3—10cm重金属含量逐渐下降,土壤的磁性特征与上层相似,但磁性矿物含量降低,属于剖面中的迁移过渡阶段.10cm以下,土壤基本未受到污染,磁性矿物和重金属含量都低,磁性颗粒大小变化稳定,基本代表了该地区土壤的自然背景.指标聚类和相关分析表明,土壤磁参数与重金属元素含量显著相关.结合模糊聚类分析,磁参数可用于追踪、识别工业污染物质在土壤剖面中的富集、迁移状态,揭示不同深度土壤的污染程度. | 沈明洁 胡守云 U. Blaha 闫海涛 W. Rsler V. Hoffmann | 2006 | 地球物理学报2006，49，6： | 44 |
| 4 | 艾比湖盐尘对周边地区土壤盐分及景观变化的影响显示文摘通过对准噶尔盆地西部艾比湖地区盐尘的扩散和堆积进行观测和取样分析,鉴别出粉尘中可溶盐的化学成分、pH和盐尘堆积强度,分析研究了盐尘的形成、分布特征和灾害强度以及盐尘暴与温度、降水、风等气候因子之间的相关关系.结果表明:近50 a来艾比湖的沉积环境总体是比较稳定的,但由于气候波动与人类活动引起艾比湖水位、水域面积曾发生较明显的变化,并产生了盐尘暴的发生、湖泊和土壤盐度以及湖周景观的变化.根据艾比湖周边盐漠区盐尘的时空分布规律、活动特点和危害强度分析,盐尘对准噶尔盆地西部土壤盐分及景观变化的影响强度范围和影响程度划分为3级区. | 吉力力.阿不都外力 徐俊荣 穆桂金 徐曼 M. V. Gabchenko | 2007 | 冰川冻土2007，29，6： | 43 |
| 5 | 国际教育信息化2013地平线报告(高等教育版)显示文摘国际新媒体联盟(New Media Consortium,简称NMC)所发布的年度地平线报告已经成为全球范围内教育信息化发展的显示器与风向标。2012年10月,北京开放大学与美国新媒体联盟签署协议,授权北京开放大学作为其在中国发行其年度报告中文版的唯一官方机构。本期学报正式刊出的2013年度地平线报告显示,未来五年内影响高等教育的六大技术为:大规模开放网络课程、平板电脑、游戏和游戏化、学习分析技术、3D打印技术、可穿戴技术。这些新技术对于我们生活中的沟通交流、获取信息、社会交往、日常学习等方面正在产生重大而深远的影响。希望本报告能够有助于国内同行及时了解国际范围内教育信息化的发展趋势、新技术应用,为促进信息技术更有效地提高教学质量服务提供有益借鉴。新媒体联盟总裁莱瑞博士(Larry Johnson)专门写信祝贺2013年度地平线报告(中文版)刊出:'北京开放大学与新媒体联盟的合作已使成千上万的中国教育界同行有机会围绕教育技术及其在大学和中小学课堂应用问题参与全球对话。北京开放大学以其在教育技术、在线学习的实践探索及开展的国际合作等方面取得的业绩成为国际地平线项目有价值的合作者。你们为地平线专题研究做出了贡献,还承担了地平线报告(中文版)的翻译出版。借助你们的帮助,许多国外同行开始了解信息技术如何在中国这一人口大国的大学和中小学得到应用;同时,也使中国教育界了解世界各国同行正在开展的信息化实践探索。' | Johnson L. AdamsBecker S. Cummins M. Estrada V. Freeman A. Ludgate H. 张铁道 殷丙山 殷蕾 白晓晶 | 2013 | 北京广播电视大学学报2013，，2： | 50 |
| 6 | 新媒体联盟地平线报告(2015图书馆版)显示文摘《新媒体联盟地平线报告(2015图书馆版)》列出了将在未来五年内影响图书馆技术规划和决策制定的六项技术:创客空间、在线学习、信息可视化、语义网与键连资料、智能定位和机器学习。同时该报告也强调,提升研究内容的可访问性、反思图书馆空间、探究学术记录的发展本质、提升对研究数据管理的关注度、提升用户体验的价值、移动内容的优先与传播,这都将有助于加速高校图书馆对于信息化技术的应用。此外,报告还呈现了六个挑战,包括将高校图书馆嵌入到课程体系中、提升数字素养、来自其他服务途径的竞争、反思图书馆员的角色和技能、直面彻底变革的需求和管理陈旧知识。 | L.约翰逊 S.亚当斯贝克尔 V.埃斯特拉达 A.弗里曼 张铁道 吴亚婕 高茜 奥斯汀 德克萨斯 | 2015 | 北京广播电视大学学报2015，0，5： | 42 |
| 7 | Liver-specific gene expression in mesenchymal stem cells is induced by liver cells显示文摘AIM: The origin of putative liver cells from distinct bone marrow stem cells, e.g. hematopoietic stem cells or multipotent adult progenitor cells was found in recent in vitro studies. Cell culture experiments revealed a key role of growth factors for the induction of liver-specific genes in stem cell cultures. We investigated the potential of rat mesenchymal stem cells (MSC) from bone marrow to differentiate into hepatocytic cells in vitro. Furthermore,we assessed the influence of cocultured liver cells on induction of liver-specific gene expression.METHODS: Mesenchymal stem cells were marked with green fluorescent protein (GFP) by retroviral gene transduction. Clonal marked MSC were either cultured under liver stimulating conditions using fibronectin-coated culture dishes and medium supplemented with SCF, HGF,EGF, and FGF-4 alone, or in presence of freshly isolated rat liver cells. Cells in cocultures were harvested and GFP+ or GFP- cells were separated using fluorescence activated cell sorting. RT-PCR analysis for the stem cell marker Thy1 and the hepatocytic markers CK-18, albumin, CK-19,and AFP was performed in the different cell populations.RESULTS: Under the specified culture conditions, rat MSC cocultured with liver cells expressed albumin-, CK-18,CK-19, and AFP-RNA over 3 weeks, whereas MSC cultured alone did not show liver specific gene expression.CONCLUSION: The results indicate that (1) rat MSC from bone marrow can differentiate towards hepatocytic lineage in vitro, and (2) that the microenvironment plays a decisive role for the induction of hepatic differentiation of rMSC. | Claudia Lange Philipp Bassler Michael V. Lioznov Helge Bruns Dietrich Kluth Axel R. Zander Henning C. Fiegel | 2005 | World Journal of Gastroenterology2005，11，29： | 31 |
| 8 | Opportunities and Challenges in Deep Mining: A Brief Review显示文摘随着全球生活水平的提高,更多消费者进入了矿物资源市场,使得矿物资源的消耗正在迅速增长。其结果是,在21世纪为了有效应对矿物资源供应危机,地下采矿持续地向更深的水平推进。然而,深部采矿在一个需要有非常规技术以及有挑战性的环境下进行,为了克服这些挑战和实现可观的经济收益需要重大的创新性解决方案、最佳实践以及实施额外的安全标准。这些挑战包括深部采矿工程常常遇到的灾难性事件:岩爆、瓦斯突出、高的原岩和次生应力、大变形、挤压和流变岩体以及高温。本文回顾了全球深部采矿现状,指出了一些与深部采矿的岩石力学和工程地质相关的技术进展及机遇。在这些技术进展中,基于全自动化的采矿和矿物提取过程的无人工作面和无人矿山已成为21世纪的重要领域。 | Pathegama G. Ranjith Jian Zhao Minghe Ju Radhika V. S. De Silva Tharaka D. Rathnaweera Adheesha K. M. S. Bandara | 2017 | Engineering2017，3，4： | 31 |
| 9 | Evaluation of the suitability of a partially defatted black soldier fly (Hermetia illucens L.) larvae meal as ingredient for rainbow trout (Oncorhynchus mykiss Walbaum) diets显示文摘Background: Two trials were performed to evaluate a partially defatted Hermetia illucens(HI) larvae meal as potential feed ingredient in rainbow trout(Oncorhynchus mykiss Walbaum) diets. In the first trial, 360 trout(178.9 ± 9.8 g of mean initial body weight) were randomly divided into three experimental groups(4 tanks/treatment, 30 fish/tank). The fish were fed for 78 days with isonitrogenous, isolipidic and isoenergetic diets containing increasing levels of HI, on as fed basis: 0%(HI0, control diet), 25%(HI25) and 50%(HI50) of fish meal substitution, corresponding to dietary inclusion levels of 0, 20% and 40%. In the second trial, 36 trout(4 tanks/treatment, 3 fish/tank) were used to evaluate the in vivo apparent digestibility coefficients(ADC) of the same diets used in the first trial.Results: Survival, growth performance, condition factor, somatic indexes, and dorsal fillet physical quality parameters were not affected by diet. The highest dietary inclusion of HI larvae meal increased dry matter and ether extract contents of trout dorsal fillet. The use of HI larvae meal induced a decrease of valuable polyunsaturated fatty acids(PUFA) even if differences were only reported at the highest level of HI inclusion. The insect meal worsened the lipids health indexes of the same muscle. Dietary inclusion of insect meal did not alter the villus height of the fish. No differences were found among treatments in relation to ADC of ether extract and gross energy, while ADC of dry matter and crude protein were higher in HI25 if compared to HI50.Conclusions: The obtained results showed that a partially defatted HI larvae meal can be used as feed ingredient in trout diets up to 40% of inclusion level without impacting survival, growth performance, condition factor, somatic indexes, dorsal fillet physical quality parameters, and intestinal morphology of the fish. However, further investigations on specific feeding strategies and diet formulations are needed to limit the observed negative effects of the insect meal on the FA composition of dorsal muscle. | M. Renna A. Schiavone F. Gai S. Dabbou C. Lussiana V. Malfatto M. Prearo M. T. Capucchio I. Biasato E. Biasibetti M. De Marco A. Brugiapaglia I. Zoccarato L. Gasco | 2017 | Journal of Animal Science and Biotechnology2017，8，4： | 32 |
| 10 | MELD vs Child-Pugh and creatinine-modified Child-Pugh score for Dredicting survival in patients with decompensated cirrhosis显示文摘AIM: Model of End-stage Liver Disease (MELD) score has recently gained wide acceptance over the old Child-Pugh score in predicting survival in patients with decompensated cirrhosis, although it is more sophisticated. We compared the predictive values of MELD, Child-Pugh and creatinine modified Child-Pugh scores in decompensated cirrhosis. METHODS: A cohort of 102 patients with decompensated cirrhosis followed-up for a median of 6 mo was studied.Two types of modified Child-Pugh scores estimated by adding 0-4 points to the original score using creatinine levels as a sixth categorical variable were evaluated.RESULTS: The areas under the receiver operating characteristic curves did not differ significantly among the four scores, but none had excellent diagnostic accuracy (areas:0.71-0.79). Child-Pugh score appeared to be the worst, while the accuracy of MELD was almost identical with that of modified Child-Pugh in predicting short-term and slightly better in predicting medium-term survival. In Cox regression analysis, all four scores were significantly associated with survival, while MELD and creatinine-modified Child-Pugh scores had better predictive values (c-statistics: 0.73 and 0.69-0.70) than Child-Pugh score (c-statistics: 0.65). Adjustment for gamma-glutamate transpeptidase levels increased the predictive values of all systems (c-statistics: 0.77-0.81). Analysis of the expected and observed survival curves in patients subgroups according to their prognosis showed that all models fit the data reasonably well with MELD probably discriminating better the subgroups with worse prognosis. CONCLUSION: MELD compared to the old Child-Pugh and particularly to creatinine-modified Child-Pugh scores does not appear to offer a clear advantage in predicting survival in patients with decompensated cirrhosis in daily clinical practice. | George V. Papatheodoridis Evangelos Cholongitas Eleni Dimitriadou Giota Touloumi Vassilios Sevastianos Athanasios J. Archimandritis | 2005 | World Journal of Gastroenterology2005，11，20： | 30 |
| 11 | 区域主义范式与城市政治显示文摘论文回顾和总结了自20世纪初期以来,区域主义演变的四种形态,以及大都市政治的相关内涵。论文从地方政府间关系的角度,分别剖析了大都市政府、公共选择、新区域主义、地域重划与再区域化等四种区域主义范式产生的动因,总结了这四种范式各自的特点以及所受的批评。同时,以当代区域面临的问题为中心,提出了未来区域主义的取向,并将此视为复兴城市政治的新契机。 | 汉克·V.萨维奇 罗纳德·K.福格尔 罗思东(译) 王旭(校) | 2009 | 公共行政评论2009，2，3： | 30 |
| 12 | Reconstruction of May——July precipitation in the north Helan Mountain, Inner Mongolia since A.D. 1726 from tree-ring late-wood widths显示文摘By analyzing statistical characteristics of five tree-ring standard chronologies, early-wood ring width (EWW), late-wood ring width (LWW), total ring width (TRW), minimum early-wood density (MinD), maximum late-wood density (MaxD) and, their climatic response re-spectively, we reconstructed the May to July precipitation using late-wood ring width (LWW) over the north Helan Mountain since A.D. 1726. The explained variance is 42% (R2adj = 41%, F = 31.46, p < 0.000001). After 11-a moving average, the explained variance reaches 82% (F = 156.9, p < 0.05). On the decadal scale, the rainfall reconstruction of the northern Helan Mountain displays a quite similar variation pattern with that of the April to early July precipitation in Baiyinaobao, east of Inner Mongolia for the last 150 years. It may reflect the intensity variation of the East Asia Summer Monsoon front to a certain extent. Spectrum analysis shows 11-a and 22-a periodicities in the May to July precipitation reconstruction at the north Helan Mountain. | LIU Yu SHI Jiangfeng V. Shishov E. Vaganov YANG Yinke CAI Qiufang SUN Junyan WANG Lei I. Djanseitov | 2004 | Chinese Science Bulletin2004，49，4： | 29 |
| 13 | 经颅多普勒超声(TCD)的实践标准——第2部分:临床适应证和预期结果显示文摘引言:经颅多普勒(transcranial Doppler,TCD)已被证实为一种安全有效的生理学超声检查技术。尽管成像设备可以在结构影像的基础上显示颅内血流,但成像性双功能超声或非成像性TCD检查提供的最终结果是通过频谱波形来评价生理学血流参数。总结概要:多学科专家小组确定的TCD临床适应证包括:镰状细胞病、恼缺血、右向左分流(right—to—left shunt,RLS)、蛛网膜下腔出血、脑死亡以及围手术期或术中监测。TCD检查可常规应用于住院或门诊患者的一些临床实践活动:通过完整或部分TCD检查以检测正常、狭窄或闭塞的颅内血管和侧支循环来判断动脉闭塞位置,并进一步完善颈动脉超声或无创性血管造影结果;通过血管运动反应性检查来识别首发或复发性卒中的高危患者;通过栓子监测对脑栓塞进行实时检查、定位和量化;在怀疑反常性栓塞或考虑分流封堵术治疗的患者中进行RLS检测;对溶栓治疗进行监测以促进血管再通和检测再闭塞;在血管内支架置入术、颈动脉内膜切除术和心脏外科手术中进行监测以发现围手术期栓塞、血栓形成、低灌注或高灌注。结论:通过界定实践范围,这些标准将在TCD检查的申请、检查和评价过程中给开申请单的医生、发报告的医生以及第三方提供帮助。 | Andrei V. Alexandrov Michael A. Sloan Charles H. Tegeler David N. Newell Alan Lumsden Zsolt Garami Christopher R. Levy Lawrence K.S. Wong Colleen Douville Manfred Kaps 李海峰(译) 李宏(译) 李展秀(译) | 2012 | 国际脑血管病杂志2012，20，1： | 28 |
| 14 | 2013地平线报告高等教育版(上)显示文摘美国新媒体联盟地平线报告系列是一项鉴别和描述未来五年内对全球教育产生巨大影响的新兴技术的综合性研究,旨在帮助教育领导者、政策制订者和教师们理解新兴技术,以及技术对教学和研究产生的潜在影响。自2004年以来地平线报告每年发布一次,均在全球范围内引起反响。2013地平线报告高等教育版于今年2月发布,该报告立足高等教育机构的现状,以全球化视角展望2013-2018未来五年间的技术发展和应用前景,包括大规模开放在线课程、平板电脑、游戏与游戏化、学习分析、3D打印、可穿戴技术等六项新兴技术,并概括了影响高等教育发展的六大趋势和高等教育面临的六大挑战。 | (美)NMC地平线项目 龚志武 吴迪 陈阳键 苏宏 王寒冰 Johnson L. Adams Becker S. Cummins M. Estrada V. Freeman A. Ludgate H. | 2013 | 广州广播电视大学学报2013，13，2： | 24 |
| 15 | MicroRNAs as biomarkers of diabetic retinopathy and disease progression显示文摘Diabetes mellitus, together with its complications, has been increasing in prevalence worldwide. Its complications include cardiovascular disease(e.g., myocardial infarction, stroke), neuropathy, nephropathy, and eye complications(e.g., glaucoma, cataracts, retinopathy, and macular edema). In patients with either type 1 or type 2 diabetes mellitus, diabetic retinopathy is the leading cause of visual impairment or blindness. It is characterized by progressive changes in the retinal microvasculature. The progression from nonproliferative diabetic retinopathy to a more advanced stage of moderate to severe nonproliferative diabetic retinopathy and proliferative diabetic retinopathy occurs very quickly after diagnosis of mild nonproliferative diabetic retinopathy. The etiology of diabetic retinopathy is unclear, and present treatments have limited effectiveness. Currently diabetic retinopathy can only be diagnosed by a trained specialist, which reduces the population that can be examined. A screening biomarker of diabetic retinopathy with high sensitivity and specificity would aid considerably in identifying those individuals in need of clinical assessment and treatment. The majority of the studies reviewed identified specific microRNAs in blood serum/plasma able to distinguish diabetic patients with retinopathy from those without retinopathy and for the progresion of the disease from nonproliferative diabetic retinopathy to proliferative diabetic retinopathy. In addition,certain microRNAs in vitreous humor were dysregulated in proliferative diabetic retinopathy compared to controls. A very high percentage of patients with diabetic retinopathy develop Alzheimer’s disease. Thus, identifying diabetic retinopathy by measurement of suitable biomarkers would also enable better screening and treatment of those individuals at risk of Alzheimer’s disease. | Bridget Martinez Philip V. Peplow | 2019 | Neural Regeneration Research2019，14，11： | 24 |
| 16 | Lanthanide NIR luminescence for telecommunications, bioanalyses and solar energy conversion显示文摘Present-day advanced technologies heavily rely on the exciting magnetic and spectroscopic properties of lanthanide ions. In particular, their ability to generate well-characterized and intense near-infrared (NIR) luminescence is exploited in any modern fiber-optic telecommunication network. In this feature article, we first summarize the whereabouts underlying the design of highly luminescent NIR molecular edifices and materials. We then focus on describing the main trends in three applications related to this spectral range: telecommunications, biosciences, and solar energy conversion. In telecommunications, efforts concentrate presently on getting easily processable polymer-based waveguide amplifiers. Upconversion nanophosphors emitting in the visible after NIR excitation are now ubiquitous in many bioanalyses while their application to bio-imaging is still in its early stages; however, highly sensitive NIR-NIR systems start to be at hand for both in vitro and in vivo imaging, as well as dual probes combining magnetic resonance and optical imaging. Finally, both silicon-based and dye-sensitized solar cells benefit from the downconversion and upconversion capabilities of lanthanide ions to harvest UV and NIR solar light and to boost the overall quantum efficiency of these next-generation devices. | Jean-Claude G. Bünzli Svetlana V. Eliseeva | 2010 | Journal of Rare Earths2010，28，6： | 22 |
| 17 | 氧化石墨烯及其氧化铁复合物的原位合成(英文)显示文摘开发了在富氧Fe(acac)3络合物体系中膨化氧化石墨制取氧化石墨烯/Fe2O3复合物的一步法。应用FT-IR、XRD、VSM、AFM及低温直流电导测量法对所制氧化石墨/Fe2O3复合物进行表征。FT-IR研究结果显示:膨化后,氧化石墨的环氧基团分解,同时形成了氧化铁粒子与氧化石墨烯复合物。AFM测试表明:在较高Fe2O3含量下,氧化石墨烯片层结构剥蚀形成厚达5mm氧化石墨烯叠层。VSM研究显示:在室温和0.13emu/g^5.5emu/g范围内,全部复合物呈铁磁特性。这些复合物的导电性受控于准电子跃迁机制。 | V. K. Singh M. K. Patra M. Manoth G. S. Gowd S. R. Vadera N. Kumar | 2009 | 新型炭材料2009，24，2： | 23 |
| 18 | 新媒体联盟2016地平线报告高等教育版显示文摘《2016地平线报告高等教育版》沿用以往讨论趋势和挑战的三元维度展开,即政策,领导力和实践,确定了18项未来五年极有可能影响高等教育变革的关键趋势、重大挑战和重要的技术进展。关键趋势中,长期趋势包括:推进创新文化、反思高校运作;中期趋势包括:学习空间的重构、转向深度学习;近期趋势包括:对测量学习持续关注、混合学习设计的广泛应用。就制约高等教育领域技术应用的挑战而言,正式与非正式学习的融合、数字素养的提升被认为是可解决的挑战,教育模式的竞争、个性化学习是艰巨的挑战,而平衡线上和线下生活、保持教育的切合性则是棘手的挑战。未来1-5年内,自带设备、学习分析和自适应学习、增强现实和虚拟现实、创客空间、情感计算、机器人技术将对高等教育产生重要影响。 | NMC地平线项目 苏宏 陈阳键 吴迪 龚志武 项荣健 Johnson L. Adams Becker S. Cummins M. Estrada V. Freeman A. Hall C. | 2016 | 广州广播电视大学学报2016，16，2： | 23 |
| 19 | A study on the mixing proportion in groundwater samples by using Piper diagram and Phreeqc model显示文摘Piper (1944) diagram has been the basis for several important interpretations of the hydrogeochemical data. As seen in this diagram, most natural waters contain relatively few dissolved constituents, with cations (metals or bases) and anions (acid radicles) in chemical equilibrium with one another. Apart from the facies representation, the composition of the mixed sample can be identified in terms of the composition of the parental solution. To bring out this advantage of the Piper diagram, a study was conducted in the Kalpakkam region of Tamilnadu, South India. By taking the geology and water table into consideration, two sample locations were selected as parent solution and third one as the mixture sample. All three samples were analyzed for calcium (Ca), magnesium (Mg), sodium (Na), potassium (K), chloride (Cl), sulphate (SO4) and phosphate (PO4) by Ion Chromatograph (Metrohm IC 861). HCO3 was determined by volumetric titration. The Piper diagram shows that parent solutions clustered towards Na-Mg-Ca-HCO3-Cl and Na-HCO3 facies, and the mixing sample belongs to Na-Mg-HCO3 facies. Phreeqc interac-tive (Ver 2.8) along with the original composition of the mixture sample was used to correlate the mixing proportion identified by the Piper diagram. | Karmegam U. Chidambaram S. Prasanna M.V. Sasidhar P. Manikandan S. Johnsonbabu G. Dheivanayaki V. Paramaguru P. Manivannan R. Srinivasamoorthy K. Anandhan P | 2011 | Chinese Journal Of Geochemistry2011，30，4： | 20 |
| 20 | 新媒体联盟地平线报告(2015基础教育版)显示文摘一、概述未来五年全球的基础教育将会面临什么形势?有哪些趋势和技术将会驱动教育的变革?有哪些挑战是可以解决或者是难以克服的?应该如何制订有效的战略性解决方案?新媒体联盟邀集56位国际专家组成的研究团队针对这些问题开展了协作研究和专题讨论,并与学校网络联合会(Consortium for School Networking,Co SN)合作完成了《新媒体联盟地平线报告(2015基础教育版)》。 | L.约翰逊 S.亚当斯贝克尔 V.埃斯特拉达 A.弗里曼 张铁道 白晓晶 李国云 季瑞芳 吴莎莎 | 2015 | 开放学习研究2015，20，S1： | 20 |
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