梨瘿螨的为害对梨叶片几种生理生化指标的影响

梨树叶片被梨瘿螨为害后，一些生理生化指标发生了变化，经光谱技术、化学方法和电物理方法测定，与健康叶片相比受害部位的叶绿素含量下降31．85％，可溶性糖含量下降24．61％，可溶性蛋白质含量上升34．14％，游离氨基酸含量上升29．95％，游离脯氨酸含量上升84．08％，过氧化氢酶活性增加29．82％，膜透性增加86．74％，中度受害叶的螨瘿部位与病健部位相比叶绿素含量下降26．86％，可溶性糖含量下降22．79％，可溶性蛋白质含量上升30．26％，游离氨基酸含量上升22．81％，游离脯氨酸含量上升16．01％，膜透性增加45．54％，过氧化氢酶活性增加15．87％，说明叶绿素、可溶性糖含量的下降和可溶性蛋白质、游离氨基酸、游离脯氨酸的上升以及过氧化氢酶活性和组织细胞膜透性的增强都主要集中在受害部位。     

“中合牌”生物菌肥研究(Ⅰ)“中合牌”生物菌肥的有效成分及其对土壤的作用

“中合牌”生物菌肥（简称ＺＨ－ＢＢＭ）的ｐｉｃｏ．ＴａｇＴＭ氨基酸分析结果表明该菌肥由１７种常见氨基酸组成，其中脯氨酸含量最高，约占总氨基酸的２９．３３％，除色氨酸由于酸水解而被破坏未能检出外，共测出７种人体必需氨基酸，占总氨基酸的４２．３３％．游离氨基酸由３３种不同的氨基酸组成，其中含２０种常见的氨基酸，占总游离氨基酸的３７．１５％，８种人体必需氨基酸占总游离氨基酸的４３％．此外，还含有数种动植物生长所需的稀有氨基酸．该研究项目为国内外首创，对阐明“中合牌”生物菌肥的有效成分及其对农业生态环境作用的分子机理提供了重要的理论依据．     

红罗非鱼肌肉的营养成分分析

对红罗非鱼肌肉进行营养成分分析，并对其营养价值进行综合评价．结果表明，肌肉中粗蛋白含量为85．2％(干基)，干物质中水解氨基酸总量为84、14％，其中必需氨基酸为35．59％，占氨基酸总量的42．30％；氨基酸价为108，第一限制氨基酸为蛋氨酸 胱氨酸(1973年FAO／WHO标准)；游离氨基酸中4种呈味氨基酸含量丰富，牛磺酸高达1．13％，占游离氨基酸总量的12．39％；EPA和DHA总量占脂肪酸的5．5％；矿物质含量丰富，尤其是Se。因此认为红罗非鱼是一种营养价值和养殖价值都较高的品种。     

土壤施硒对白肋烟硒状况的影响

土壤施硒盆栽实验结果表明：在实验设定的土壤施硒范围内，白肋烟叶含硒量为3．8—210μg，根含硒量为2．2-57μg，茎含硒量为1．4-42μg/g，白肋烟根、茎、叶的含硒量均与土壤施硒量呈极显著的正相关；白肋烟的含硒量呈叶大于根大于茎的分布规律；白肋烟根、茎、叶的富硒量均与土壤施硒量呈极显著的正相关，而白肋烟富硒量则呈叶大于茎大于根的分布规律，所以白肋烟的富硒能力为叶大于茎大于根；叶、茎、根的富硒量占总富硒量的比例分别为54．3％-70．8％、20．8％-37．5％、5．5％-9．5％，说明白肋烟吸收的硒有90％以上累积在地上部分；白肋烟对所施硒肥的利用率为8．9％-18．1％，与某些条件下磷肥的利用率相当．     

石荠苧(Mosta punctulata)不同器官的精油分布特征

采用水蒸汽蒸馏法测定石荠苧不同器官的精油含量，色谱／质谱／数据系统联用方法分析石荠苧不同器官精油的化学组成．结果表明：石荠苧干叶的精油含量为(2.515士0.044)％，石荠苧干茎的精油含量为(0.205士0.018)％，石荠苧干全草的精油含量为(1.535士0.035)％．干叶的精油含量是干茎的12倍多，叶是石荠苧精油分布的主要器官．从石荠苧不同器官的精油中共检测到142种成分，鉴定出以甲基丁香油酚、律草烯、石竹烯、β-金合欢烯、桉叶油素、τ-榄香烯、α-香柠檬烯、侧柏酮为主的70种成分．其中从干叶精油中鉴定出58种成分，占其精油总量的97.935％；从干茎精油中鉴定出56种成分，占其精油总量的94.524％；从干草精油中鉴定出64种成分，占其精油总量的98.008％．叶、茎、全草三者精油的化学组成基本相同．     

玉兰植物内生真菌的分离筛选及活性菌株研究

采用组织块法对玉兰不同组织内生菌进行了分离,共纯化得到69株内生真菌．结果发现,玉兰植物的根、茎、叶中均可以分离得到内生真菌,根组织中的种类、数量明显多于茎和叶,占到分离总菌株数量的52％．其中分离于玉兰植物根部的No．37菌株对供试的7种病原真菌和5种病原细菌具有较强的抑制作用．经形态鉴定该菌株为层出镰刀菌．在100...     

新城疫病毒HB92株NP基因序列测定和分析

对NDV HB92株NP基因进行了序列测定和分析．结果显示，NDV HB92株NP基因全长1744个核苷酸，开放阅读框共1470个核苷酸，编码489个氨基酸；与其他10株NDV NP基因核苷酸同源性为88．3％～99．1％，氨基酸同源性为91．0％～98．9％；但HB92株与其亲本株QV4的核苷酸和氨基酸同源性只有90．3％和95．0％，不如与弱毒和中毒株的高；系统进化分析表明，HB92株与弱毒和中毒株的进化关系更近．以上结果表明，HB92株NP基因在序列上已远离无毒株而趋于向弱毒和中毒株进化．     

四合木(Tetraena mongolica Maxim)氨基酸含量特征分析

西鄂尔多斯地区四合木(TetraenamongolicaMaxim)氨基酸含量的测定与分析表明:四合木中含有动物必须的8种氨基酸,其含量为:成株13.65g·kg-1,幼苗15.46g·kg-1,分别占氨基酸总量的36.77%和32.645%.四合木成株与幼苗的根、茎、叶之间部分氨基酸含量有显著差异,除苏氨酸外,其它氨基酸含量特征为幼苗>成株;四合木11种氨基酸含量高于沙打旺、紫花苜蓿而小于沙生灌木、沙棘、花棒、柠条和多枝柽柳.与其它5种优良牧草(箭舌豌豆、苦卖菜、沙打旺、白三叶、紫花苜蓿)必须氨基酸含量相比较,部分氨基酸含量高于箭舌豌豆和白三叶.与荒漠濒危植物比较,其脯氨酸含量具有特殊性.四合木幼苗根与茎之间脯氨酸含量有显著差异,且根的脯氨酸含量为茎的2倍.由于脯氨酸含量与植物的抗旱能力呈正相关,因此,十分有利于四合木幼苗的成活.     

薜荔花粉的营养成分研究

分析测定了薜荔分的营养成分，研究结果表明，其蛋白质含量３９．８８％，氨基酸总量为３９．４１％，必需基酸含量为１４．５６％，游离氨基酸含量为３０．０７ｍｇ／ｇ，氨基酸佞为９７分，并含有丰富的维生素、矿质元素、脂肪酸和总黄酮等营养物质，薜荔花粉资源丰富，营养成分全面，具有很高的开发利用价值。     

刺槐,国槐根际土壤中氨基酸和IAA的含量

本文对刺槐和国槐根面与根际土壤中游离氨基酸及植物生长素ＩＡＡ进行了分析，并研究了茎环割后上述生化成分的数量变化。结果表明：刺槐和国槐根面氨基酸组成和数量有很大差别；茎环割后，根面氨基酸的含量显著增加；两个树种根际土壤中氨基酸含量显著低于根面刺槐根面和根际土壤中ＩＡＡ含量均大于国槐。茎环割后，刺槐、国槐根面ＩＡＡ显著增加，表明根面ＩＡＡ的存在是根系代谢和根际土壤微生物共同作用的产物．     

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).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

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.