正交法优化兰坪虫草子实体人工诱导条件

旨在探明兰坪虫草子实体人工诱导培养的条件,为其产业化生产奠定基础。通过正交设计试验探明兰坪虫草子实体诱导培养的最佳培养基配方;并探讨了不同培养温度和不同光照条件对诱导子实体形成的影响。结果表明,子实体诱导最佳的培养基配方为OLM-2:20%鲜蚕蛹、3%麦芽糖、0.6%黄豆粉、0.05%石膏、0.1%MgSO_4、0.05%KH_2PO_4、0.002%Vb_1、0.004%烟酸、0.004%Vb_6;子实体诱导的最适条件为,以昼温22℃、夜温16℃的温差刺激,及300 Lx弱光照每天光照7 h;培养20 d后较高温度和较长光照时间(20℃,300 Lx每天光照12 h)有利于子实体的生长发育。在最佳诱导培养条件下获得的人工子实体与野生子实体形态结构接近,但较长、较粗。     

蛹虫草子实体的人工培养研究

通过对蛹虫草子实体的人工培养研究发现：固体营养物以小米和高粱米的混合物是最佳的。人工培养基的最佳碳、氮源为可溶性淀粉和蛋白胨，最佳pH范围是5～6；VB1、2，4-D和无机元素K^ 、Mg^2 、Ca^2 对子实体的生长有促进作用。最佳培养条件是湿度80％。光照6001x(24L：0D)，15℃培养10d后转到25℃下培养．蚕蛹培养子实体的条件是10℃下培养到蚕蛹僵硬后转到25℃下培养，湿度80％．     

啤酒糟栽培北虫草的培养基配方研究

以啤酒糟和大米为原料,研究培养基中啤酒糟含量对北虫草子实体产量和质量的影响.实验结果表明,以100%啤酒糟做培养基是可以栽培北虫草的,但是北虫草子实体产量和质量不如添加一定量大米的培养基;当培养基中啤酒糟含量≤83%时,对北虫草子实体产量影响不大;啤酒糟含量≤50%时,北虫草子实体质量达最佳状态.     

硒对蛹虫草生长发育的影响

以蛹虫草作为富集硒的载体，用不同浓度的含硒培养基分别对蛹虫草的子实体进行培养，以研究蛹虫草的耐硒能力．结果表明：采用固体培养基培养蛹虫草子实体，在含硒0．5—20mg／kg的固体培养基上，菌丝均能生长；在含硒0．5—5．0mg／kg范围内，子实体生长速度较其他浓度明显提高；在含硒10．0—20．0mg／kg范围内，子实体生长受到抑制；在含硒30mg／kg以上的培养基上，菌丝不能生长。     

北虫草人工代料栽培的几种碳源比较

研究用4种不同粮食作物作为培养基主料,生产的北虫草在产量和质量上的差别。在其他条件相同的情况下,分别用大米、高梁、玉米、小麦为主要碳源制作培养基,从液体菌种培养直到子实体成熟。随机抽样检测其产量、质量。结果表明：小麦、大米作培养基主料,子实体的产量、质量较好,高粱其次,玉米较差。     

猪肚菇大棚栽培技术

猪肚菇属中温偏高温型菌类,子实体生长发育适宜温度为23~32℃。根据漳州地区的气候条件,栽培的形式以大棚规模化墙式叠排袋栽生产。培养料的处理方式为室外淋水预处理、混合堆制发酵和常压蒸汽灭菌。接种后的栽培袋在24~28℃进行发菌培养,一般经30d左右菌丝可长满袋。为了使猪肚菇子实体原基分化较快形成菇蕾,昼夜需有8℃以上的温差刺激,菇蕾形成后,为了提高菇品质量,菇棚温度最好保持在23~32℃,菇棚内的相对湿度保持在85%~90%,合理通风和光照,有利于子实体生长发育,生物转化率高且稳定的效果。     

竹荪野生变家种初报

本文提出了竹荪菌人工栽培的最佳培养基以及用常规微生物培养法培育出竹荪菌子实体的过程;还阐明了采用发酵竹绒培养料,在常温、通风和遮光的条件栽培得出较好的效果,指出了以菌丝(组织)无性繁殖子实体,完成一代个体发育是竹荪菌野生变家种的重要途径之一。     

添加蚕蛹粉对蛹虫草生长及子实体有效成分的影响

在大米培养基中添加蚕蛹粉,分析添加蚕蛹粉对蛹虫草菌丝体生长状况,子实体生长情况以及子实体有效成分虫草素、虫草多糖含量的影响。试验结果表明:蚕蛹粉添加量为6 g时,子实体生长状态最佳,畸形率最低、出草率最高、平均高度最高,干品产量最高,达到(5.36±0.087)g·瓶~(-1);在蚕蛹粉量为8 g时,虫草素与总虫草素的含量最高,分别达到(7.39±0.095)mg·g~(-1)和(34.06±0.164)mg·瓶~(-1);在蚕蛹粉量为6 g时,虫草多糖及总虫草多糖的含量最高,分别达到(23.26±0.086)mg·g~(-1)和(124.67±0.089)mg·瓶~(-1)。试验结果为蛹虫草产业化栽培及深层开发提供一定的理论依据。     

鸡腿蘑(CorprinuS ccmatuS)生物学特性研究

本研究结果认为鸡腿蘑(Coprinus comatus)最佳原种培养基为马铃薯200g,葡萄糖10g,燕麦粉10g,琼脂20g,水1000ml;最佳出菇培养料配方为棉籽皮90％,燕麦粉8％,蔗糖1％,过磷酸钙0.5％,石膏0.5％;菌丝生长的最适温度为20～25℃,子实体发育最适温度为18～22℃;培养基的最适pH值为6.5～7.5。     

大花君子兰的胚培养及其胚状体的诱导

大花君子兰幼胚培养,其胚状体采用MS培养基(其中大量元素减半),附加ZT1毫克/升,NAA0.2毫克/升,IAA0.2毫克/升,蔗糖1.5％、琼脂0.65％、pH5.8％,在温度25±1℃、光照1200 Lx(10小时/天)下培养20天后即诱导出芽,然后转入壮苗发根培养基:MS培养基(其中大量元素减半)、附加BA0.05毫克/升、IBA0.2毫克/升、IAA0.6毫克/升,蔗糖、琼脂、pH及培养条件同上。培养三个星期后即长出叶片并发根2—3条。将试管苗鳞茎状部分切成0.5—1 cm见方的小块,接入壮苗发根培养基中,经2—3次(每次20天)继代培养形成8—9个胚状体,然后移至无激素的MS培养基中培养(培养条件同上),19天后转入壮苗发根培养基中,16天后相继长出根和叶,成为壮苗。最后经炼苗移栽至花盆,成活率可达100％。     

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.     

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.     

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)

正~~     

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.