吐哈盆地克尔碱凹陷煤层煤质特征与成煤环境

为了揭示吐哈盆地克尔碱凹陷不同矿区煤质形成条件，探讨该区煤质与成煤环境的关系，基于对主采煤层样品工业分析、有害组分及灰成分指标等数据分析，在对克尔碱凹陷地层分布、含煤岩系特征等基本地质条件分析的基础上，运用煤地质学、煤岩学、煤化学等理论和方法，系统总结凹陷内各矿区煤层赋存特征、煤质特征，探讨区内煤岩煤质与成煤环境的关系。结果表明：研究区自西向东划分6个主要矿区,区内煤层主要发育于中侏罗统西山窑组（J2x）和下侏罗统八道湾组（J1b）地层之中。研究区煤质呈低灰、低硫、高挥发分特征，煤灰成分以SiO2、Al2O3为主。综合分析表明，研究区中-下侏罗统主要煤层形成于湖泊-河流三角洲淡水沉积环境，具陆相成煤特征，成煤环境温暖潮湿。     

空间的力量 新奥胡斯大学医院

正新奥胡斯大学医院是丹麦第一个超大型的医院案例,也是一个具有"康复医疗"概念的、超现代的国际先锋作品。医院的建筑设计通过系统运用"信息和循证"的工作方法,践行了"康复建筑"的综合理念。其"信息和循证"的方法是利用对现存建筑的研究和评估,以提供最有效的信息来创建最佳的康复建筑。从单人病房的设计、日光和光线的利用,以及景观和花园空间的设计,旨在尽量满足病人的需求,提升     

泥炭泥浆在治疗中的放射性

正为确定泥炭泥浆中天然和人工同位素的含量,并估算标准泥炭泥浆处理过程中患者皮肤吸收的辐射剂量,分析了从波兰8个矿泉采集的37个样本,用γ能谱法测量同位素浓度活性。标准泥炭泥浆浴治疗中的皮肤剂量约为300 nSv,泥炭泥浆这种治疗的有效剂量被认为是22 nSv。治疗过程中     

新疆东天山灵北地区康南岩体岩石学#br# 特征及其构造意义

研究区位于新疆东天山觉罗塔格造山带吐哈盆地以南百灵山以北，多年来对于研究区古生代构造背景的认识受前人热议，存在争议。通过对研究区新发现基性岩体的岩石、地球化学特征与构造背景进行探讨，以期为大区域构造背景的研究提供一定的数据支持。主量元素研究表明，康南岩体具有高Mg、Fe，低Al的特征，说明研究区基性侵入岩为碱性岩石系列。微量元素测试结果表明具有同源演化的特征，Rb、Hf元素亏损较为严重。K、Ba、P、Sm富集明显，Tb、Nb、Ti表现为弱异常，在稀土元素球粒陨石标准化配分模式图中Eu的负异常不明显，表现为弱的正异常， Yb+Nb-Rb构造环境判别图解中样品落在“后碰撞”环境内，以上特征说明具有岛弧花岗岩的基本特征。岩性为深灰绿色弱蚀变细粒橄榄辉绿岩。     

Toward Energy-Efficient and Trustworthy eHealth Monitoring System

The rapid technological convergence between Internet of Things(IoT),Wireless Body Area Networks(WBANs)and cloud computing has made e-healthcare emerge as a promising application domain,which has significant potential to improve the quality of medical care.In particular,patient-centric health monitoring plays a vital role in e-healthcare service,involving a set of important operations ranging from medical data collection and aggregation,data transmission and segregation,to data analytics.This survey paper firstly presents an architectural framework to describe the entire monitoring life cycle and highlight the essential service components.More detailed discussions are then devoted to {\em data collection} at patient side,which we argue that it serves as fundamental basis in achieving robust,efficient,and secure health monitoring.Subsequently,a profound discussion of the security threats targeting eHealth monitoring systems is presented,and the major limitations of the existing solutions are analyzed and extensively discussed.Finally,a set of design challenges is identified in order to achieve high quality and secure patient-centric monitoring schemes,along with some potential solutions.     

Strain rate dependency and fragmentation pattern of expanding warheads

For the characterization of the behaviors of a metal material in events like expanding warheads, it is necessary to know its strength and ductility at high strain rates, around 104e105/s. The flyer plate impact testing produces the uniform stress and strain rates but the testing is expensive. The Taylor test is relatively inexpensive but produces non-uniform stress and strain fields, and the results are not so easily inferred for material modeling. In the split-Hopkinson bar(SHB), which may be used in compression, tension and torsion testing, the strain rates never exceeds 103/s. In the present work, we use the expanding ring test where the strain rate is 104e105/s. A streak camera is used to examine the expanding ring velocity, and a water tank is used to collect the fragments. The experimental results are compared with the numerical simulations using the hydrocodes AUTODYN, IMPETUS Afea and a regularized smooth particle(RSPH) software. The number of fragments increases with the increase in the expansion velocity of the rings. The number of fragments is similar to the experimental results. The RSPH software shows much the same results as the AUTODYN where the Lagrangian solver is used for the ring. The IMPETUS Afea solver shows a somewhat different fragmentation characteristic due to the node splitting algorithm that induces pronounced tensile splitting.     

“至上”与“虚无”

<正>俄国画家马列维奇是"至上主义"抽象绘画流派的创始者,其绘画作品简约而纯粹,以最简单的形式——方块展现出艺术家丰富的感情世界,探索了形体、色彩与空间的关系。而同样善于运用几何形态的西班牙雕塑家奥泰萨的风格则显得冷静而克制,其雕塑作品通常看起来虚幻而抽象,没有强烈的情感表现,以高度理性化的手法展现出一种"虚无"的艺术境界。二人所专注的领域虽有不同,但他们的作品都在关注形式与其所在空间之间的复杂关系。