荔枝LitchiChinensisSonn果皮热处理护色技术的探讨

选择妃子笑,糯米糍,淮枝等广东省主栽荔枝品种,比较研究了不同热处理技术包括热水（及沸水）,热空气,热蒸汽及其实施配合浸酸处理对荔枝皮颜色保持的效果。结果表明：果实分别经９８℃沸水３ｓ,５６℃热水５ｍｉｎ,高温条件下９５℃,热空气５ｍｉｎ,或９５℃,热蒸汽３－５ｓ处理后再在ｐＨ０．６的ＨＣｌ溶液中浸泡５ｍｉｎ,或９５℃,热蒸汽３－５ｓ处理后再在ｐＨ０．５的ＨＣｌ溶液中浸泡５ｍｉｎ,能有效提高并稳定保     

速冻蔬菜的最适烫漂时间与其过氧化物酶活性测定研究

本试验以各种蔬菜：菠菜、芹菜、花菜、芦笋、土豆、大头菜、蒜苗中的过氧化物酶活性为研究对象：在不同温度下进行烫漂处理后其ＰＯＤ活力具有再生现象，于是确定在９５°Ｃ下烫漂得到不同蔬菜的最佳烫漂时间分别为菠菜１ｍｉｎ，蒜苗２．５ｍｉｎ，芹菜３ｍｉｎ，芦笋４ｍｉｎ，青菜１．５ｍｉｎ，大头菜１．５ｍｉｎ，花菜２．５ｍｉｎ，土豆３ｍｉｎ；还进一步比较研究了添加柠檬酸、Ｎａ＿２ＣＯ＿３、ＣｕＳＯ＿４等化学药品对蔬菜烫漂处理中ＰＯＤ活性的影响，结果用适宜浓度的Ｎａ＿２ＣＯ＿３（１０￣（－５）Ｍ）或ＣｕＳＯ＿４（４．０×１０￣（－４）Ｍ）溶液烫漂处理具有护色和杀酶的协同效果。     

MAP技术保鲜损伤生菜研究

采用各种预处理方法加强ＭＡＰ（ＭｏｄｉｆｉｅｄＡｔｍｏｓｐｈｅｒｅＰａｃｋａｇｉｎｇ）技术保鲜损伤生菜的效果;具体研究了紫外线、Ｈ２Ｏ２、ＮａＣｌＯ、乙醇、５３℃热水等预处理方法与ＭＡＰ协同对损伤生菜贮藏品质和微生物的影响。结果表明,经Ｈ２Ｏ２（０．１５ｍｌ／Ｌ,１ｍｉｎ）处理后ＭＡＰ（Ｏ２：１．５～２．０％,ＣＯ２：２．０～２．５％）４～５℃贮藏效果最佳。另外,低温、Ｈ２Ｏ２、ＭＡＰ对微生物有较好的抑制作用     

皮革蛋白粉中微量铬（Ⅲ）的光度法测定

皮革蛋白粉中微量铬（Ⅲ）与二甲酚橙，在ｐＨ＝４．５～５．０的ＨＡｃ—ＮａＡｃ缓冲溶液中，于沸水浴上反应２０～３０ｍｉｎ，生成１：１的紫红色螯合物。λ＿（ｍａｘ）＝５４２ｎｍ，表观摩尔吸光系数１．５×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。铬（Ⅲ）浓度在０～５０μｇ／５０ｍＬ范围内符合比耳定律。     

橡胶硫化促进剂NS的合成

粗Ｍ不进行精制，直接用于合成橡胶硫化促进剂ＮＳ，降低了生产成本，避免了将粗Ｍ精制成精Ｍ过程中造成的环境污染。当粗Ｍ：叔丁胺：次氯酸钠的摩尔比为１：１．７：０．６，反应温度为４５￣５５℃时，产品收率可达８１％以上（以粗Ｍ中所含纯Ｍ的量计算），对产品质量进行检测，当加热减量≤０．５％，ＮＳ的熔点≥１０３℃。     

中药止血散的止血作用初探

本实验选用ＮＩＨ小鼠，随机分成Ⅰ、Ⅱ、Ⅲ三组，用环磷酰胺建立小白鼠再生障碍性贫血动物模型．实验结果显示：出血时间Ⅰ（对照）组（１．５８±０．１５）ｍｉｎ，Ⅱ（环磷酰胺）组（５．２３±０．２７）ｍｉｎ，Ⅲ（环磷酰胺＋止血散）组（１．５７±０．１）ｍｉｎ；统计学处理表明Ⅱ与Ⅰ组间有差异（ｐ＜０．０５），Ⅱ与Ⅲ组间有差异（ｐ＜０．０５），Ⅰ与Ⅲ组间无差异（ｐ＞０．０５）；血块回缩分别为完全、不良、完全，血小板计数分别为４３０．２±３４．３６×１０￣９Ｌ￣（－１），２８４±１９．９６×１０￣９Ｌ￣（－１），４６５．４±２２．４８×１０￣９Ｌ￣（－１）．统计处理表明Ⅱ与Ⅰ组间和Ⅱ与Ⅲ组间存在显著性差异（ｐ＜０．０１），Ⅰ与Ⅲ组间无差异，本实验提示：中药制剂止血散能促进血小板的生成和血小板的释放，具有止血作用．     

致富门路

致富门路水果保鲜贮藏法沙２０厘米，密封缸内，放在通风处贮藏。细沙的湿度以手捏成团、落地松散，每层用量以覆盖不见果实为准。（３）涂蜡贮藏法采用２号或３号涂料原液与水１。１．５或ｌ。１．２的比例配成涂料，抹涂于果皮，蒂部宜多涂。也可用凡士林代科涂果，然后...     

蓖麻油微波裂解制备癸二酸的研究：无溶剂法

以蓖麻油为原料，无溶剂条件下经微波辐射裂解制备癸二酸，最佳工艺条件为：氢氧化钠（ｇ）：蓖麻油（ｇ）＝１．５：１．０，碱浓度为５５．６％，微波功率为１６０Ｗ，裂解时间２２ｍｉｎ，癸二酸产率达９６．５％，与传统方法比较，反应时间缩短了３０倍，节约了能耗，减少了污染，降低了成本。     

卵母细胞的不同对牛体外受精效果的影响

为了进一步提高牛体外受精（ＢＩＶＦ）胚的发育率，探讨了来自不同大小卵泡、具有不同卵丘细胞层数以及细胞质形态不同的卵母细胞对牛体外受精效果的影响。结果表明：１）分别采自直径大于５ｍｍ、２￣５ｍｍ和小于２ｍｍ的卵泡的卵母细胞，经体外成熟、体外受精后，卵裂率分别为５４．５％（３０／５５）、６４．４％（８５／１３２）和５０．４％（６３／１２５）。其中，２￣５ｍｍ卵泡的卵母细胞的体外受精结果显高于小于２ｍ     

再谈乙酸乙酯合成实验的改进

改进了文献＾（１－３）乙酸乙酯合成的实验方法。操作条件为：底料醇／酸（摩尔比）３．２：１，滴加料醇／酸（摩尔比）１：１，总原料醇／酸（摩尔比）１．５：１，Ｖ硫酸：Ｖ底料＝１：２．５，反应温度１００℃￣１１０℃，改进后的合成方法克服了原实验方法的缺点，显著减少了浓硫酸的用量，从而降低了反应温度，避免了碳化现象，减少了成醚副反应的发生，并提出了收率。     

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.