藏山羊产乳性能和乳酶及乳清蛋白的测定

对分布于青藏高原地区和山谷地区藏山羊的泌乳性能和乳清蛋白组分，及山谷地区域山羊乳酶力进行了测定，结果表明：高原地区藏山羊产乳量平均为２４．０ｋｇ，乳中营养成分含量（％）：乳脂为４．８±１．２、乳糖为４．５９±０．７５、乳蛋白为４．８７±０．６１；山谷地区藏山羊产乳量平均为３６．６２ｋｇ，乳中营养成分（％），乳脂为５．３±１．５、乳糖为４．９９±０．４５、乳蛋白为３．０８±０．４８．山谷地区的藏山羊乳酶，ＬＤＨ、ＡＫＰ，Ｒ－ＧＴ和ＬＰ和活力分别为８１．９±３７．８、７．７±３．５、４３７．４±９３．０、５３２．７±２０２．６单位，ＬＰ在体外可被１０￣（－５）ｍｏｌ／Ｌ的硫氰酸根或乳酸根活化，经琼脂糖凝胶平板电脉，可将乳ＬＤＨ分离出ＬＤＨ＿１、ＬＤＨ＿２和ＬＤＨ＿３三条带，各带所占有百分比分别为５０．６±４．５、３１．６±４．２和１７．８±３；３．采用ＳＤＳ－ｐＡＧＥ，乳清蛋白显示出五条区带，即ＳＡ、Ｉｇ－Ｈ、Ｉｇ－ｌ，β－Ｌｇ和α－Ｌａ。乳清蛋组分（％）：高原地区藏山羊ＳＡ为６．６±３．０、Ｉｇ为２２．９±６．５、β－Ｌｇ为４７．５±９．１和α－Ｌａ为２３．０±１０．６；山谷地区藏山羊相应为６．６±２．６、２     

示差脉冲溶出伏安法测定湖水中痕量硫

本文基于Ｓ２－能与Ａｇ＋生成难溶化合物的特征，在银微盘电极上研究了Ｓ２－的示差脉冲溶出伏安法（ＤＰＳＶ）．该法不要镀汞，不需搅拌，在较稀的支持电解质溶液中就能实施．ＤＰＳＶ于０．１０ｍｏｌ／ＬＨＡｃ－ＮａＡｃ及０．０１ｍｏｌ／ＬＥＤＴＡ介质中，能检出１．０×１０－８ｍｏｌ／Ｌ的Ｓ２－，Ｓ２－的浓度为１．０×１０－７～９．０×１０－７ｍｏｌ／Ｌ及１．０×１０－６～８．０×１０－６ｍｏｌ／Ｌ范围与峰电流有良好的线性关系．该法用于湖水中Ｓ２－的测定，结果令人满意，加标回收率为９５．７％，与标准分析法比较相对误差为－６．２％．     

高压静电场对蟆叶秋海棠愈伤组织生长的效应

用＋ １．０ ｋＶ／ｃｍ 场强高压静电处理蟆叶秋海棠愈伤组织３０ ｍ ｉｎ, 处理组愈伤组织生长速率达９０．７ｍ ｇ／ｄ,比对照组高２３％ ,超氧物歧化酶（ＳＯＤ）活性、蛋白质及可溶性糖含量分别为１７９．０ ｕ／ｇ·ＦＷ、１４．４ ｍ ｇ／ｇ·ＦＷ、４９．０ ｍ ｇ／ｇ·ＤＷ, 分别比对照增加１０．６％ 、１０．８％ 、７．７％ 。过氧化物酶 （ＰＯＤ） 和吲哚乙酸（ＩＡＡ） 氧化酶活性分别为５８．０ Ｏ．Ｄ４７０／ｍ ｉｎ·ｇ ＦＷ, １６３．８ μｇ／ｇ·ｈ ＦＷ, 分别比对照下降１２．７％ 和２３．３％ 。     

PVC膜碘离子选择电极的研制与应用

以三辛基十二烷基碘化铵（ＤＴＯＡ—Ｉ）为电活性物，邻苯二甲酸二丁酯（ＤＢＰ）为增塑剂，制成聚氯乙烯（ＰＶＣ）膜碘离子选择电极。电极对Ｉ－浓度在８．０×１０－６～１．０×１００ｍｏｌ·Ｌ－１范围内符合能斯特响应，其斜率为５７．０ｍＶ／ｐＩ－（１６℃）。用该电极测定了海盐中微量碘，回收率在９３．２２％～１０５．３％之间。     

前期生长发育受阻育肥猪的补偿生长

以前期生长发育受阻的育肥猪为试验组．正常猪为对照组，两个试验的结果表明，改善饲养条件后，试验组生长速度明显提高，试验１试验组（ｎ＝５）９月龄体重４０．８千克，日增重６８９．１克比对照组提高２３．１％（Ｐ＜０．０１）；试验２试验组（ｎ＝６０）７月龄体重５０．７千克，日增重６５４．８克，比对照组提高１５．６％（Ｐ＜０．０１）；试验组每日采食风干料明显增加，实验１和实验２分别提高２４．６％和１１．８％：试验组每增重１千克耗ＤＥ和ＣＰ实验１减少８．８７％和１１．８％，实验２减少３．７％和４．１％（Ｐ＜０．０１）．体重９０千克左右屠宰，试验组膘厚、后腿比例和脂肪率减少（Ｐ＜０．０５），但瘦肉率提高（Ｐ＜０．０５）．     

复合型纳滤膜的制备及表征

在聚砜基膜上用界面聚合法制备了两种复合型纳滤膜ＰＡ０１和ＰＡ０２。在０．３ＭＰａ下,ＰＡ０１膜对ＭｇＳＯ４溶液和ＦｅＣｌ３溶液的脱直 ９６．０％和７８．０％,水通量分别为８．５（Ｌ．ｍ＾－２．ｈ＾－１）和７．９（Ｌ．ｍ＾－２．ｈ＾－１）;ＰＡ０２膜对ＭｇＳＯ４ｉｐｗｋｉｙｗ （２．０ｇ．Ｌ＾－１）和ＣａＣｌ溶液（０．５ｇ．Ｌ＾－１）的脱盐率分别为９８．０％和８８．８％,水通量分别为１．０（Ｌ。ｍ＾     

痕量铁的在线监测研究

根据在邻菲罗啉的活化下Ｆｅ３＋对ＫＩＯ４氧化罗丹明Ｂ褪色的催化作用，利用流动注射技术，建立了一个痕量铁的在线监测的新方法．该方法Ｆｅ３＋的浓度在０～８×１０－５ｇ／Ｌ和８×１０－５～２．８×１０－４ｇ／Ｌ范围内分段与褪色效应呈良好线性相关，检出限为：１×１０－７ｇ／ＬＦｅ３＋（３δ）；ＲＳＤ≤１．６％（ｃ＝５×１０－５ｇ／Ｌ，ｎ＝１１）．利用该方法对水样中铁进行在线监测，效果满意     

十二钨硅酸及其6DMF,8DMSO加合物的标准生成焓测定

通过一系列滴定量热测定，求得了２９８．１５Ｋ时十二钨硅酸及其６ＤＭＦ、８ＤＭＳＯ加合物的标准生成焓，其数值分别为－（１３．１４±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１、－（１３．６１±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１及－（１３．８６±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１。     

单硝酸异山梨酯片正常人体药物动力学及相对生物利用度研究

比较单硝酸异山梨酯两种片剂在正常人体内药物动力学及相对生物利用度。８名健康志愿自身交叉口服单剂量（２０ｍｇ）单硝酸弃山梨酯片剂，用气相色谱－－电子捕获检测法测定单硝酸异山梨酯经时过程的血药浓度，其数据用３ｐ８７程序拟合，求得对照品和研制样品片剂的药动学参数。对照品和研制样品片剂的药动学参数分别为：Ｋａ（２．４±０．８）ｈ＾－１和（２．１±０．３）ｈ＾－１；ｔ２／２β（７．０±０．７）ｈ和（７．２±０．６）ｈ；Ｃｍａｘ（１９９．８±３９．３）ｎｇ／ｎｌ＾－１和（１９６．６±３５．１）ｎｇ／ｍｌ＾－１；Ｔｍａｘ（１．０±０．１）ｈ和（１．０±０．１）ｈ；ＡＵＣ（１６４３．８±２９５．６）ｎｇ．ｈ．ｍｌ＾－１和（１６６６．７±２６４．３）ｎｇ．ｈ．ｍｌ＾－１，单硝酸异山梨酯研制品片剂相对于对照品片剂生物利用度为（１     

一种日常快速分析食物中毒样品中有机磷农药的方法

采用０．５３ｍｍ宽口径毛细管柱，在带氮磷检测器（ＮＰＤ）的气相色谱上一次快速测定多种有机磷（ＯＰ）农药，结果表明，当添加ＯＰ农药水平在０．１２ｍｇ／ｋｇ－０．７０ｍｇ／ｋｇ时，７种ＯＰ农药的回收率范围为７８．８％－１０１．２％，变异系数３．４％－８．２％，方法检测限达１．１μｇ／ｋｇ－６．３μｇ／ｋｇ。无水硫酸钠对提高ＯＰ农药以提取过程中的回收率有重要作用。     

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.