蛇伤胶囊中5种蒽醌类化合物含量的测定

目的 建立蛇伤胶囊中5种蒽醌类成分含量测定分析方法,提升蛇伤胶囊质量标准。方法 采用Diamonsil C₁₈色谱柱（250 mm×4.6 mm,5 μm）,流动相为甲醇（A）-0.1%磷酸水溶液（B）,梯度洗脱（0~7 min,75% A;7~30 min,75% A→90% A;30~40 min,90% A）,流速为1.0 mL·min^-1,检测波长为254 nm,进样量10 μL。结果 5个待测组的线性范围：4.04~40.40μg/mL（r=0.9994）、4.16~41.60μg/mL（r=0.9991）、4.14~41.40 μg/mL（r=0.9959）、4.10~41.00 μg/mL（r=0.9993）和2.16~21.60μg/mL（r=0.9997）。平均回收率（n=6）分别为100.02%、100.02%、100.03%、99.99%和100.06%,RSD分别为0.40%、0.15%、0.30%、0.11%和0.47%。结论 所建立的方法操作简便准确且具有良好的重复性,可用于测定蛇伤胶囊中芦荟大黄素、大黄素、大黄酸、大黄酚和大黄素甲醚的含量。     

黄板对茶园昆虫类群的诱捕效果分析

昆虫与植物之间色彩通讯是彼此信息交流的渠道之一，基于害虫趋色性研发的诱虫板作为一种绿色防控手段，已广泛应用于农林害虫的防控和预测预报。为了明确黄色诱虫板在茶园害虫多样性调查和防治中的效果，我们于2018年7月~8月对井冈山大井茶园里的黄色诱虫板的诱捕情况进行了调查研究。研究结果表明：黄板对茶园双翅目、膜翅目、半翅目、鞘翅目和鳞翅目昆虫诱捕效果最佳，直翅目害虫诱捕效果较差，且不同类群间数量差异极其显著。阳面诱捕的昆虫总数量多于阴面（V=1450.5，P=0.0032），不同类群诱捕效果的分析表明：双翅目（Wilcoxon符号秩检验，V=1525，P=0.017）、半翅目（Wilcoxon符号秩检验，V=1233.5，P=0.044）、鳞翅目（Wilcoxon符号秩检验，V=244，P<0.001）、膜翅目（Wilcoxon符号秩检验，V=818.5，p<0.001）双面诱捕数量存在显著差异，且阳面均多于阴面。相关性分析表明半翅目—鳞翅目（r=0.75，P<0.001）、半翅目—膜翅目（r=0.55，P<0.001）、半翅目—鞘翅目（r=0.58，P<0.001）、鳞翅目—膜翅目（r=0.53，P<0.001）、鳞翅目—鞘翅目（r=0.71,P<0.001）、膜翅目—鞘翅目（r=0.63，P<0.001）间诱捕数量上存在正相关。     

半群DOPD(n,r)的秩和相关秩

设自然数n≥3,DOPD_n是有限链[n]上的保序且保距部分一一奇异降序变换半群.对任意的r（0≤r≤n-1）,记DOPD（n,r）={α∈DOPD_n：|Im（α）|≤r}为半群DOPD_n的双边星理想.通过对秩为r的元素和星格林关系的分析,获得了半群DOPD（n,r）的极小生成集和秩.确定了当0≤l≤r时,半群DOPD（n,r）关于其星理想DOPD（n,l）的相关秩.     

半群OI(n,r)k的秩和相关秩

设自然数n≥3,OI_n^k是有限链[n]上的双边k型-保序严格部分一一变换半群.对任意的1≤k≤n-1,0≤r≤n-1,记OI_（n,r）^k={α∈OI_n^k：|im（α）|≤r}为半群OI_n^k的双边理想.通过对秩为r的元素和格林关系的分析,分别获得了半群OOI_（n,r）^k的极小生成集和秩.进一步确定了当0≤l≤r时,半群OI_（n,r）^k关于其理想OI_（n,l）^k的相关秩.     

新的f(R)黑洞

f（R）引力是一个直接拓展广义相对论的修正引力理论,它的拉格朗日量是一个仅含曲率标量R的任意函数f（R）.在F（r）=1+αr的条件下（F（r）≡（df（R（r）））/（dr）和αr是一个对广义相对论小的修正量）,导出了度规f（R）引力理论中场方程的精确球对称真空解.此外,考虑了这个黑洞背景时空中的标量场扰动.用六阶WKB （Wentzel-Kramers-Brillouin）方法,讨论了拟正则模和这个黑洞的参数之间的关系,得出这个黑洞是稳定的结论.     

大叶钩藤中柯诺辛碱B及柯诺辛碱的含量测定及分析

为建立大叶钩藤Uncaria macrophylla Wall.中柯诺辛碱B （Corynoxine B）及柯诺辛碱 （Corynoxine）的含量测定方法,采用高效液相色谱法测定在不同采收月份大叶钩藤及不同药用部位中柯诺辛碱B及柯诺辛碱的含量。测定条件：Inertsil ODS-3 C₁₈色谱柱（4.6 mm×250 mm,5 μm）,流动相为甲醇-0.02%三乙胺（68∶32）,流速1 mL/min,检测波长246 nm,柱温25℃。实验结果表明：柯诺辛碱B进样量为0.130-1.950 μg,柯诺辛碱进样量为0.296-4.440 μg,与峰面积呈良好的线性关系,相关系数r均为1.000 0 （n=5）;柯诺辛碱B和柯诺辛碱的平均回收率（n=6）分别为99.47%和100.06%,RSD分别为1.56%和0.98%。本法简便易行,重现性好,可为钩藤药材的质量控制提供科学依据。     

颗粒滚动阻力本构参数标定试验研究

针对颗粒滚动阻力本构参数难以通过阻力测量试验来直接标定，开展了两种离散元滚动阻力模型MDEM（modified discrete element method）和HDEM（hysteresis discrete element method）参数的试验标定方法研究。利用自由滚动颗粒的摆动过程建立了颗粒间滚动刚度系数K_r与滚动阻尼系数C_r的试验标定公式，搭建了激光位移传感器测量颗粒微振动的光学试验平台，通过测量试件摆动时程曲线实现了MDEM模型中K_r和C_r的标定；提出基于材料单轴循环拉伸试验的标定方法，利用颗粒本体材料加卸载循环作用下的滞回曲线实现了HDEM模型中的弹性滞后系数 β的标定。试验结果表明，该试验方法能够有效地标定颗粒间滚动阻力本构参数。     

经颅多普勒超声在VA-ECMO患者脑血流动力学评估中的观察性研究

采用经颅多普勒超声（Transcranial Doppler Ultrasound，TCD）监测动脉静脉体外膜肺氧合（Venoarterial Extracorporeal Membrane Oxygenation，VA-ECMO）患者的脑血流动力学，分析其脑血流参数与血压、体外膜肺氧合（Extracorporeal Membrane Oxygenation，ECMO）流量变化的关系，以及脑血流动力学改变与患者神经系统并发症发生的关系，为指导临床治疗及判断早期预后提供依据。转机后对VA-ECMO患者进行双侧大脑中动脉（Middle Cerebral Arterys，MCA）血流监测，记录脑血流与平均动脉压（Mean Arterial Pressure，MAP）、ECMO流量情况，根据脉压差（Pulse Pressure，PP）是否大于10 mmHg分为两组，比较两组患者脑血流动力学情况及ECMO流量特点，以及脑血流改变与患者急性神经系统并发症发生的相关性。结果表明：PP≤10 mmHg组的VA-ECMO患者MAP低于PP>10 mmHg组[（59.44±15.54） mmHg vs （77.93±8.68） mmHg，P＝0.008]，其ECMO流量高于PP>10 mmHg组[（4.29±0.88） L/min vs （3.37±0.74） L/min，P＝0.041]，此时MCA的收缩期流速、平均流速、脑血流指数相较于PP>10 mmHg组下降，但差异无统计学意义。两组患者MCA舒张期流速无显著性差异。PP≤10 mmHg组患者右侧MCA搏动指数、阻力指数均低于PP>10 mmHg组，差异有统计学意义（P<0.05）。两组的神经系统并发症发生率差异无统计学意义(P>0.05）。心泵功能衰竭且脉压差低于10 mmHg的患者，提高VA-ECMO流量可维持其脑血流，利用TCD监测VA-ECMO患者脑血流变化并指导临床诊疗具有可行性。     

转抗除草剂基因油菜与5种十字花科杂草的基因流研究

通过荧光显微镜和人工杂交授粉结实情况的观察，研究了抗草甘膦甘蓝型油菜Q3（Brassica. napus L.）与5种十字花科杂草的杂交亲和性.结果表明，遏蓝菜（Thlaspi arvense L.）、荠菜［Capsella bursa-pastoris （L.） Medic］、碎米荠（Cardamine hirsuta L.）、风花菜［Rorippa palustris （L.） Besser］（作母本）与Q3（作父本）杂交高度不亲和.荧光显微镜观察发现花粉管生长受阻，分别停滞在上述杂草的柱头表面或花柱上部1/3处；而野芥菜×Q3则表现出一定程度的亲和性，亲和指数为1.65.在大田邻近间隔种植和自然授粉条件下，Q3与遏蓝菜、荠菜、碎米荠和风花菜间的基因流频率为0，与野芥菜间的频率为0.86%.上述结果表明转抗除草剂基因油菜与十字花科杂草间存在不同程度的基因流，基因流频率与杂交亲和性高度相关.     

PMP柱前衍生HPLC法测定松乳菇多糖的单糖组成

建立了一种1-苯基-3-甲基-5-吡唑酮（PMP）柱前衍生高效液相色谱（high performance liquid chromatography,HPLC）法测定松乳菇多糖中单糖组成。通过单因素实验优化PMP衍生单糖的条件为反应时间40 min,反应温度70 °C和PMP浓度0.8 mol/L。以Agilent Zorbax SB-C18色谱柱为分析柱,磷酸缓冲液（0.05 mol/L,pH=6.9）-乙腈为流动相,检测波长为250 nm,进样量10 µL,柱温20 °C检测单糖组成。在此色谱条件下,各单糖线性关系良好（R²≥0.999 6）,精密度高（RSD≤2.23%）,重复性强（RSD≤2.11%）,加标回收率为97.16%~101.68%。该方法适用于松乳菇多糖中单糖组成的测定。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.