新疆枣不同品种果实和果核性状的比较

以新疆生产的圆脆枣、赞皇大枣、赞新大枣、灰枣、骏枣、壶瓶枣、梨枣7个枣品种为实验材料,描述了不同品种枣果实、枣核、种仁的形态特征;对不同品种枣果实性状、枣核、种仁的数量性状进行比较;并且分析了不同性状之间的相关性。结果表明:检测的7个品种中,梨枣的果实最大,灰枣的果实最小;灰枣、骏枣的可溶性固形物的含量高于其它品种;单果重与果实横径和果核横径均呈极显著的正相关,其相关系数分别为0.893和0.884。可溶性固形物含量与含水率、种仁纵径、种仁横径呈极显著的负相关,其相关系数分别为-0.993、-0.923和-0.881。     

土壤含水率对蓝莓叶片生理及果实品质的影响

【目的】了解土壤含水率对蓝莓(Vaccinium corymbosum)叶片生理及果实品质的影响特征和规律。【方法】以5年生兔眼蓝莓(V.ashei)为试材，通过人工控制设置不同土壤含水率梯度，分析不同土壤含水率对蓝莓植株生理及果实品质的影响。【结果】随着土壤含水率增加，蓝莓叶片中丙二醛(MDA)、脯氨酸(Pro)和可溶性糖含量先降低后升高，超氧化物歧化酶(SOD)活性呈“M”形变化趋势，叶绿素含量先升高后下降；蓝莓果实单果质量呈“S”形变化趋势，果实中花青素和维生素C(VC)含量先升高后下降，可溶性固形物(SSC)含量先降低后增加。当土壤相对含水率低于35%～40%或高于95%时，蓝莓叶片生理和果实品质都会受到显著影响，叶片中MDA、Pro和可溶性糖含量均显著升高；叶绿素含量和SOD活性均出现下降趋势，其中叶绿素含量显著降低。果实中花青素和VC积累显著降低，SSC含量升高，蓝莓果实的质量随着土壤含水率的升高而增加，当土壤含水率达到65%～70%后，果实的质量不再显著增加。采用隶属函数计算得出，土壤含水率处于65%～70%时适合蓝莓生长。4个蓝莓品种中，‘园蓝’(‘Gardenblue...     

小果型番茄不同组合果实主要性状表现及相关分析

在塑料大棚春茬栽培条件下,对10个小果型番茄组合的果实主要性状进行了调查比较及其相关性分析,结果表明,组合XH(无限生长,红色,椭圆形)×QX(无限生长,粉色,柱形)、XH×21(无限生长,红色,圆形)和180(有限生长,红色,椭圆形)×XH果型指数较大,果型为椭圆形,且果实单果质量较小,可溶性固形物的含量及Vc含量均相对较高;组合XH×16L(无限生长,粉色,扁圆形),XH×GL-1(无限生长,粉色,圆形),XH×CHW(无限生长,红色,扁圆型)和QX×CHW果型指数较小,果型近似圆形,且果实单果质量较大。相关性分析表明,果实平均单果质量与横径呈极显著正相关,与果形指数呈极显著负相关。     

重金属Cd、Zn污染对番茄果实品质的影响及其残留的研究

通过温室盆栽试验,研究重金属Cd、Zn对番茄果实品质的影响及其在果实内的残留.结果表明:(1)Cd、Zn处理影响番茄果实品质.随着重金属处理浓度的增加(Cd:0.001 mmol/L~0.1 mmol/L、Zn:0.01 mmol/L~1.0mmol/L),番茄可溶性固形物、维生素C、可溶性糖的变化呈下降趋势,但是差异不显著.而有机酸含量上升,且处理间的差异显著,Zn在1.0 mmol/L时,有机酸含量与对照呈极显著差异.(2)Cd、Zn在番茄果实中的残留量随处理浓度的增加而增加,各Cd处理浓度与对照呈极显著差异.除Zn(0.01 mmol/L)处理外,其余Zn处理间差异显著.与国家蔬菜卫生标准相比,番茄果实中的Cd的含量严重超标,而Zn的含量没有超标.     

温室中7个樱桃品种果实内在品质比较

以7个樱桃品种为试验材料,在设施栽培的条件下研究了不同品种采收后果实可溶性糖、可滴定酸、糖酸比、维生素C （Vc）、蛋白质等主要营养物质含量的差异,进一步分析了各主要物质变化间的相关性.结果表明：美早（AM）的可溶性糖的质量分数最高;明珠（MZ）,AM和黑珍珠（BLA）的可溶性固形物的质量分数显著高于其他品种;AM和BLA品种的维生素C的质量比显著高于其他品种;早大果（EBF）和红灯（RED）果实的可滴定酸的质量分数显著高于其他品种,BLA酸度最低;BLA果实的糖酸比最高.AM,MZ和RED的可溶性蛋白质的质量浓度显著高于其他品种.隶属函数综合分析显示樱桃果实内在品质的优劣依次为AM,BLA,MZ,RED,矮化萨米特（mSUM）,萨米特（SUM）,EBF.SPSS相关性分析显示各品种樱桃果实中的V_C的质量比与可溶性糖的质量分数,蛋白质的质量浓度与可溶性固形物的质量分数的变化呈显著的正相关性.综合比较分析7个樱桃品种的内在品质后认为：AM品种为北方设施栽培7个品种中内在品质最好的品种,是温室栽培的较好樱桃品种.     

微环境气调对冰温贮藏蓝莓货架期果实软化的影响

为了探究微环境气调对冰温贮藏后货架期间蓝莓果实软化的调控作用,以莱克西蓝莓为实验材料,采后将其装入微环境气调箱中,并放入1-甲基环丙烯保鲜包,冷链物流车运至冰温库(-0.5℃±0.3℃)贮藏30d后进行商品化分装,置于冰箱(7℃±1℃)中存放,定期测定果实的硬度、细胞壁多糖含量、细胞壁降解酶活性并研究蓝莓硬度与细胞壁代谢指数的相关性。结果表明:微环境气调处理使蓝莓在货架后期维持着较高的纤维素、半纤维素和原果胶含量,延缓了可溶性果胶含量的上升,同时抑制多聚半乳糖醛酸酶、果胶甲酯酶、α-L-阿拉伯呋喃糖苷酶和纤维素酶活性,延迟β-半乳糖苷酶活性峰出现时间,进而延缓果实硬度的下降。聚类和相关性分析表明:纤维素、半纤维素、原果胶聚为Ⅰ簇,与蓝莓硬度相关系数为0.580、0.663、0.645,呈极显著正相关,而可溶性果胶、多聚半乳糖醛酸酶、果胶甲酯酶、α-L-阿拉伯呋喃糖苷酶、纤维素酶和β-半乳糖苷酶聚为Ⅱ簇,与蓝莓硬度呈负相关。微环境气调结合冰温贮藏能够延缓蓝莓货架期间果实的软化,研究旨在为蓝莓货架期间硬度保持机制提供理论依据。     

不同硬度番茄成熟果实贮藏期间的品质变化

为明确SHD,CHW,JL-1,JL-8,16等5个番茄品系果实品质差异及贮藏期间果实品质变化和耐贮藏性,以该5个不同硬度番茄品系为材料,通过在塑料拱棚栽培,对其果实品质及储藏期间果实品质变化进行研究。结果表明：采收当天品系SHD果实硬度最大;品系16可溶性固形物含量最高,果实硬度和呼吸强度均最小;品系JL-1的可溶性...     

甜樱桃果实呼吸强度和营养成分变化规律研究

对红艳、那翁两种甜樱桃果实在成熟期间呼吸强度、单果重和主要营养成分的变化进行了测定分析。结果表明：成熟过程中呼吸强度呈逐渐降低的趋势；单果重、可溶性固形物、还原糖和有机酸含量随果实的成熟而增高，有机酸含量达到最大值后开始下降；Ｖｃ含量以转色期最高，成熟后降低；氨基酸和单宁的相对含量在幼果中最多，随着果实的成熟逐渐减少。相关分析表明：呼吸强度、单果重、还原糖含量与开花后天数有显著的相关性。     

凉山油橄榄主栽品种叶中营养物质和酚类含量的季节性变化

【目的】油橄榄叶是油橄榄产业发展过程中产生的农林废弃物,研究不同品种及叶龄油橄榄叶中主要营养物质和酚类含量在不同季节的变化,为油橄榄叶在药品、保健品和功能性食品等方面的高值化应用提供理论依据和技术支撑。【方法】以四川凉山6个油橄榄主栽品种的老叶和嫩叶为研究对象,检测其游离氨基酸(FAAC)、可溶性糖(SSC)和可溶性蛋白(SPC)等营养物质含量差异,并通过高效液相色谱法(HPLC)分析7种主要酚类成分(橄榄苦苷、芦丁、木犀草素-4'-O-葡萄糖苷、芹菜素-7-O-葡萄糖苷、木犀草素、槲皮素和芹菜素)含量的季节变化。【结果】凉山地区油橄榄老叶和嫩叶中主要营养物质和酚类成分呈季节性不均匀分布状态,7种酚类成分在夏秋季节波动幅度大,FAAC、SSC、SPC含量在2—3月和5—6月相对较高;6个品种中,‘鄂植’与‘卡林’叶中营养物质和酚类成分比其他品种丰富,且嫩叶中其含量水平比老叶的高。【结论】油橄榄叶中营养物质丰富和酚类成分稳定的最佳季节为春季,‘鄂植’和‘卡林’嫩叶可作为潜在的高值化应用品种材料来源加以开发和利用。     

低温胁迫对六个类型黑果枸杞枝条抗寒性的影响

为了筛选抗寒性较高,能适应新疆北疆冬季低温的黑果枸杞类型,以3个野生型及其相应的优选系黑果枸杞枝条为试验材料,在4(对照)、-25、-30、-35和-40℃条件下进行生理指标测定,对各指标间相关性进行分析,采用主成分分析法、隶属函数法对不同类型黑果枸杞枝条抗寒力进行评价。结果表明:6个类型黑果枸杞枝条的相对电导率呈上升趋势;丙二醛含量呈"升-降-升"的变化趋势;超氧化物歧化酶活性先下降后上升,过氧化物酶、过氧化氢酶活性、可溶性蛋白、可溶性糖含量类型间变化趋势不同,脯氨酸含量呈"升-降-升-降"的变化趋势。相关性分析结果表明,丙二醛与相对电导率呈极显著正相关,可溶性糖与相对电导率呈显著负相关。主成分分析和隶属函数法综合评价6个类型黑果枸杞抗寒性从大到小依次为:西宁优系、库尔勒野生、库尔勒优系、武威野生、西宁野生、武威优系。     

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.     

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…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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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。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

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