F-残缺数据的辨识与恢复

利用P-集合结构中的内P-集合与F-元素删除集合,给出声．残缺数据的概念,它是由（x）F与（x）-构成的一个数据对（（x）F,（x）-）。由F-残缺数据,给出F-残缺数据的生成与豇残缺度。利用这些结果,给出F-残缺数据的关系定理,F-残缺度定理,F-残缺数据的辨识定理,F-残缺数据的恢复定理,并给出F-残缺数据的应用。     

P-集合与(,F)-数据生成-辨识

P-集合(packet sets)是一个集合对, 它由内P-集合(internal packet sets)与外P-集合(outer packet sets)共同构成, P-集合具有动态特性。利用P-集合,给出数据集合, 数据集合,F-数据集合与(,F)-数据集合概念;提出-数据集定理, F-数据集定理, (,F)-数据带定理,数据集合恢复定理, (,F)-数据辨识定理,给出辨识准则。 利用这些结果, 给出(,F)-数据在信息系统中的应用。P-集合是研究动态信息系统的一个新理论与新方法。     

P-集合与（-↑F,F）-数据生成-辨识

P-集合（packet sets）是一个集合对,它由内P-集合（internal packet sets）与外P-集合（outer packet sets）共同构成,P-集合具有动态特性。利用P-集合,给出数据集合,-↑F-数据集合,F-数据集合与（-↑F,F）-数据集合概念;提出-↑F-数据集定理,F-数据集定理,（-↑F,F）-数据带定理,数据集合恢复定理,（-↑F,F）-数据辨识定理,给出辨识准则。利用这些结果,给出（-↑F,F）-数据在信息系统中的应用。P-集合是研究动态信息系统的一个新理论与新方法。     

F-畸变数据的生成与修复

P-集合是研究动态信息系统的一个新数学工具,应用P-集合的外P-集合与补充集合的关系,提出了F-畸变数据与-冗余数据的概念;给出F-畸变数据的生成定理和修复定理,包括F-畸变数据的辨识定理.最后给出F-畸变数据的修复准则与修复实例,其结果为研究动态信息系统的数据扩张提供了1种新方法.     

内-外数据圆与动态数据-恢复

P-集合(packet sets)是由内P-集合XF-(internal packet setXF-)与外P-集合XF(outer packet setsXF)构成的集合对;P-集合具有动态特性。利用P-集合,给出内-数据圆,外-数据圆的概念,利用这些概念,给出动态数据恢复定理,动态数据恢复准则与数据恢复-辨识定理,给出应用。P-集合是动态数据分析-辨识研究的一个新工具。     

逆P-集合的扰动定理与数据的扰动挖掘

逆P-集合是把动态特征引入到有限普通元素集合内提出的,逆P-集合具有动态特征。逆P-集合的动态特征来自集合的元素(属性)迁移,元素迁入使得集合的边界发生扩展扰动,元素迁出使得集合的边界发生收缩扰动。本文基于逆P-集合的概念与结构,提出内逆P-集合的F-扰动度、外逆P-集合的(-overF)-扰动度与逆P-集合的(F,(-overF))-扰动度概念,给出它们的度量,并给出F-扰动定理、(-overF)-扰动定理与(F,(-overF))-扰动定理,以及在扰动存在的条件下,逆P-集合、逆P-集合族与有限普通元素集合X的关系。利用这些结果,提出数据的F-扰动挖掘定理、(-overF)-扰动挖掘定理与(F,(-overF))-扰动挖掘定理。最后给出基于扰动度的数据挖掘应用。     

Packet sets and -F - drift law recovery

P-集合是研究动态信息系统与动态信息规律的一个新理论与新方法.利用p-集合,给出F-漂移规律生成概念,提出F-漂移规律辨识定理;给出F-漂移规律恢复概念,提出F-漂移规律恢复定理.利用这些结果,给出F-漂移规律恢复的应用与实证.     

半P集合（XF,X）与F-导航数据的路径匹配

在海上台风预警搜救系统中,存在数据丢失现象,为了能够正确地、实时地显示船舶在电子海图上的当前位置,应用半P-集合,提出F-导航数据与F-匹配度概念,给出辨识F-导航数据的定理、F-导航数据的恢复定理、导航数据的稳态匹配度定理、导航数据在电子海图路径上的匹配准则,最后给出F-导航数据在电子海图上的路径匹配应用。     

内P-信息与它的反动态特性

P-集合(packet sets)是由内P-集合XF(internal packet set XF)与外P-集合XF(outer packet set XF)构成的元素集合对(XF,XF).P-集合具有动态特性,利用内P-集合XF的结构与动态特性,提出它的反动态特性,给出了基信息、内P-信息、珚F-删除信息、内P-反动态信息等概念;给出了内P-反动态信息的范围,内P-反动态信息判定,内P-反动态信息最大度量,内P-有效删除信息,内P-剩余信息定理及推论;最后给出应用实例.     

P-集合与F-信息的动态分离特征

P-集合（packet sets）是改进普通集合得到的,或者用动态特性代替普通集合的静态特性得到的。利用内P-集合,给出F-信息的动态分离概念,给出F-信息分离与依赖特征,给出F-信息的动态分离特征定理与应用。P-集合是动态信息系统研究中的一个新的理论与新方法。     

Na+-K+-ATP酶的π-演算语义及验证

给出了Na⁺-K⁺-ATP酶跨越细胞膜同时主动向胞内运转钾离子和向胞外运转钠离子这一生化过程的π-演算模型及该模型的Spin验证. 证明了用过程代数的方法表示以“相互通讯”和“可移动”为主要特征的生物系统并模拟其行为的可行性.      

Effect of MTEC1 on the functional expression of TCRaβ+ 3G11− 6C10− CD4+ CD8− thymocyte subset

A murine CD4⁺ thymocyte subset with phenotype of TCRαβ⁺ 3G11⁻ 6C10⁻ CD4⁺ CD8⁻ CD69^+/- HSA^med/lo contains the cells in relatively functional matured status. The functional property of the cells in this subset is characterized by the unique pattern of cytokine production at transitional stage from Th0 to Th2 type with the latter being the dominant type. After being co-cultured with murine thymic medullary epithelial cell line (MTEC1) cells, a murine thymic medullary type epithelial cell line, the TCRαβ⁺ 3G11⁻ 6C10⁻ CD4⁺ CD8⁻ CD69^+/- HSA^med/lo thymocytes, has exhibited significantly higher levels of proliferation capability and IL-6 production, whereas the production of IL-4 and IL-10 is suppressed after co-culturing with MTECl. By contrast, MTECl could not induce thymocytes to secrete Thl type of cytokines. The results suggest that MTECl can regulate functional status of this thymocyte subset and induce them to develop into a specialized Th2 subset.     

Effects of La3+ and Gd3+ on Ca2+ influx in rat hepatoma H-35 cells

Effects of La³⁺ and Gd³⁺ on Ca²⁺ influx were investigated in rat hepatoma H-35 cells by measuring the initial rate of⁴⁵Ca²⁺ uptake. It was found that the maximum initial rate of Ca²⁺ uptake was increased six-to ten-fold at low concentrations of La³⁺ and Gd³⁺. Kinetic analyses by measuring the initial rate of Ca²⁺ influx at different external Ca²⁺ concentrations indicated the existence of two intracellular exchangeable components in the basal Ca²⁺ system, with low and high affinities for Ca²⁺, and only one class of Ca²⁺ binding sites was observed in the La³⁺-or Gd³⁺-treated cells. For high affinity, La³⁺ and Gd³⁺ increased both kinetic parametersK _m andV _max of basai Ca²⁺ influx. La³⁺ and Gd³⁺ compete directly with Ca²⁺ for Ca²⁺ binding site for low affinity. The kinetics is competitive.     

基于现场监测数据的岩质高边坡加固有限元分析——以贵州某岩质高边坡为例

本文以贵州省某岩质高边坡为例,首先分析了边坡三级平台排桩加固前后八个月的深孔监测数据,得到加固后深部监测孔位移仍在增加,边坡仍然处于不稳定状态。其次,利用FLAC3D有限元差分软件反演分析三级平台加固后坡体状况,并建立变换抗滑桩位置的加固模型,分析滑坡体的位移、剪应变增量和滑带位置的变化和分布情况,获得相应的边坡稳定系数,提出最优加固方案。第三,通过对该最优加固方案模拟计算,结果表明：二级平台处加桩坡体达到的稳定系数值最高,为1.25,加固后最大位移减小了22.5%,桩后滑带剪应变增量减小了20.69%,为指导该滑坡的后续加固治理工程提供了理论分析与基础。     

Functional maturation of two murine medullary-type CD8SP thymocytes

TCRαβCD4-CD8+ thymocytes are heterogeneity. They may undergo phenotypic and functional maturation within thymic medulla. Medullary-type CD8SP thymocytes were divided into seven subsets based on phenotypic analysis, and their precursor-progeny relationship along with the differential pathway was also delineated. To further testify the validity of the maturation pathway, we purified 6C10-CD69+ cells representing the early stage and 6C10-Qa-2+ cells representing the later stage among medullary-type CD8SP thymocytes and compared their functional maturation levels. CD8+ T cells of spleen were used as the control. It is shown that there is no obvious difference of proliferation ability among these three subsets; however, intracytoplasmic cytokine assay shows that there is a hier archy of IFN-γ and TNFα secretion among these subsets, strikingly comparable to their phenotypic status among medullary type CD8SP thymocytes. The bioassays of IL-2 and IFN-γ in culture supernatant give the similar results.     

Export of particulate organic carbon estimated from234Th-238U disequilibria and its temporal variation in the South China Sea

Activities of²³⁴Th and nutrient concentrations in the upper 500 m water column were measured at a time-series station in the South China Sea over a time span of 12.3 d. Results showed a reduction of dissolved²³⁴Th and an overall increase of particulate²³⁴Th during the period. Meanwhile, activities of total²³⁴Th kept fairly constant, implying rapid transformation of²³⁴Th between the dissolved and particulate forms. Vertical profiles of total²³⁴Th showed evident deficit of²³⁴Th relative to²³⁸U in the upper 500 m water column. Using an irreversible steady-state model of thorium scavenging, export fluxes of particulate organic carbon (POC) corresponding to time pointsT ₁ andT ₂ were estimated to be 46.5 and 13.1 mmolC · m⁻² · d⁻¹. It was demonstrated that the estimation of POC export was greatly dependent on the POC/²³⁴Th_P ratios and the bias caused by the different models of²³⁴Th scavenging, however, was considered to be of minor importance.     

Oxygen isotopic (17O-18O) heterogeneity in Archaean continental nucleus, North China Craton

The oxygen isotopic data for amphibolites from Archaean continental nucleus, North China Craton indicate that ( i ) the evolving lines structured by the data are parallel to the geoselenic evolving line, which means that the parent materials of these continental nucleus originated from solar matter; ( ii ) different intercepts for these evolving lines manifest that oxygen isotopic compositions of different continental nucleus are heterogeneous, which means that these continental nucleuses originated from different parent resources with different original compositions.     

Determination of specific activity of230Th in uranium ore samples

A new method suitable for determining specific activity of²³⁰Th in uranium ore samples is built. The method is characterized by adding the²³⁰Th/²³²Th standard dilution agent with lower activity ratio (Its²³⁰Th/²³²Th activity ratio and²³⁰Th have been known) to the samples and using isotopic dilution analysis. The method can be applied to analyses of²³⁰Th specific activity in various²³⁰Th/²³²Th activity ratio samples. The precision can also be improved.     

Laser probe40Ar/39Ar dating of mica on the deformed rocks from Altyn Fault and its tectonic implications, western China

The samples of Caledonian mylonitized granite and Jurassic meta-sedimentary rocks were collected in the north of Dangjinshan Pass, Qaidam gate fault-valley and Gesi fault-valley. Detailed studies under the microscope and electronic microscope suggest that all the samples contain the syntectonic-growing minerals such as white mica, chlorite, sericite, biotite, etc. By dating these minerals, we got a group of ⁴⁰Ar/³⁹Ar laser probe isochronal ages of 89—92 Ma and apparent ages of (46.6±6.4) Ma. The ages ranging from 97 to 46 Ma were reported for the first time in the isotopic dating researches of the Altyn Fault. The isochronal age group of (98—89) Ma indicates that a ductile strike-slip event, with low-grade metamorphism, began in late Cretaceous. This suggests that the strike-slip movement of the Altyn Fault should be related to the formation of the so-called west tectonic syntaxis in the Nepal-western Kunlun area.     

Effect of fatty acids on polyamine contents and Na+/H+ antiport activity in PM vesicles isolated from roots of barley under salt stress

With 200 mmol/L NaCl treatment on barley cultivar “Jian 4” (Hordeum vulgare L. cv. J4) seedlings for 6 d, the contents of covalently and noncovalently conjugated polyamines (PAs) and activities of H⁺-ATPase in plasma membrane (PM) vesicles isolated from the roots decreased remarkably. Moreover, the activity of Na⁺/H⁺ antiport was detected first in PM vesicles. The results showed that the decrease in the contents of membrane phospholipid, noncovalently conjugated PAs and activity of H⁺-ATPase caused by NaCl could be restored partially by application of 1 mmol/L stearie acid (C_16:0) and linoleic acid (C_18:2), and C_18:2 was more effective than C_16:0 In addition, a reduction in the contents of covalently conjugated PAs was only reversed partially in the presence of C_18:2 Furthermore, Na⁺/H⁺ antiport activity was strengthened by exogenous C_16:0 and C_18:2 and C_18:2 was more effective than C_16:0. The correlative analysis suggested that, after application of C_16:0 and C_18:2 under salt stress, there was a significant positive correlation existing among phospholipid content, noncovalently conjugated PA levels, H⁺-ATPase activities and Na⁺/H⁺ antiport activities, indicating that one of the mitigative mechanisms of exogenous fatty acids on salt injury was to improve membrane phospholipid and PA contents, leading to an enhance in membrane integrity and a change in charge status of PM vesicles, so the activity of membrane-associated enzyme H⁺-ATPase was increased and synthesis of Na⁺/H⁺ antiport protein was activated.