激素诱导母犬发情试验

对13头母犬进行了两次试验。试验一,分为四组:(1)氯前列烯醇;(2)PMSG;(3)LRH—A_2和(4)三合激素。试验结果,第一组母犬发情率、受胎率和每窝平均产仔数分别为80、60和2.67;第二组分别为100、0和0;第四组分别为0、0、和0,第三组分别为100、0、和0。试验二,选用(1)MAP阴道海绵栓埋植7天,取栓同时注射PMSG5002μ,LRH—A_2100单位;(2)MAP处理7天,埋栓同时注射地塞米松10mg,取栓时注PMSG和LRH—A_2。试验结果,母犬发情率、受胎率和窝产仔数分别为100、100和4.5。结果表明,氯前列烯酸+PMSG、LRH—A_2和MAP+PMSG、LRH—A是克服母犬繁殖障碍及诱导母犬发情的较佳处理方案。     

多胎和单胎山羊品种促性腺素基因及其受体基因的克隆、序列分析及组织表达研究

以多胎的金堂黑山羊和单胎的藏山羊为研究对象,通过RT-PCR技术,对金堂黑山羊和藏山羊FSHβ、LHβ、FSHR和LHR基因进行克隆,采用Real-time PCR技术测定FSHR和LHR基因在发情前期母羊卵巢中的表达量,采用酶联免疫法测定血浆中FSH和LH的浓度.结果表明:金堂黑山羊和藏山羊FSHβ、LHβ、FSHR和LHR基因的CDS区长度分别为390bp、426bp、2088bp、2103bp,同源性分别为99.74%、100%、99.95%、99.57%;发情前期两山羊品种之间卵巢FSHR和LHR基因的mRNA相对表达量差异不显著(P>0.05),血浆中FSH浓度无显著差异(P>0.05),LH的浓度差异显著(P<0.05).提示FSHβ和LHR基因序列及血浆中LH浓度在两个品种间的差异可能是品种间产羔数性状差异的重要原因.     

两种因素对非繁殖季节奶山羊同期发情效果的影响

正为了探讨两种处理方法和不同年龄阶段两种因素对非繁殖季节奶山羊同期发情效果的影响,试验选用33只12~15月龄初产奶山羊和36只经产奶山羊分为两组进行研究,每组试验重复2次,结果表明:阴栓和耳栓2种同期发情处理,初产组奶山羊撤栓后24h内平均同期发情率分别为92.9%和42.9%,差异显著(P0.05);经产组奶山羊撤栓后24h内平均同期发情率分别为73.2%和47.9%,差异亦显著(P0.05);     

奶山羊初乳孕酮和17β—雌二醇的含量及注射初乳对乳中激素水平的影响

应用放射免疫分析法(Radioimmunoassay.RIA),首次测定了14只西农萨能奶山羊初乳中17β—雌二醇(17β—E_2)和孕酮(P_4)的水平。结果表明,分娩0时17β—E_2含量最高(549.05±156.51pg/ml),为10天后均值的12.2倍;分娩后最初6小时17β—E_2水平波动在549.05—408.01pg/ml的范围内,然后陡然下降;2天后下降幅度逐渐减慢,到分娩5天以后,下降到较低水平。P_4的水平在分娩0时为1.883±0.937ng/ml,分娩后最初2天下降较快,随后逐渐变慢,6天后维持在0.7—0.8ng/ml的水平。用山羊初乳对12只西农萨能奶山羊实施颈部皮下注射。结果表明,与注射0天比较,注射后P_4水平立即下降,持续13天。其中第1、5、6、12天显著下降(P<0.05),其余9天均值下降到注射0天均值的80.3％,而对照组无变化(P>0.10)。17β—E_2水平变化不显著(P>0.05)。注射初乳后最初13天,注射组的17β—E_2/P_4的比值极显著地高于对照组(P<0.001)。以上研究结果表明,奶山羊初乳中17β—E_2和P_4水平的分泌范型与牛类似;给奶山羊注射初乳后,能引起其乳汁P_4水平下降和17β—E_2/P_4比值升高,但显示不出诱导发情的作用。     

成都麻羊与四川肉用黑山羊地方品种产乳性能研究

测定成都麻羊和四川肉用黑山羊地方品种羔羊哺乳期母羊的产乳量、乳常规营养成分、乳蛋白组分和乳酪蛋白遗传多态性.结果表明,母羊哺乳期的产乳量(kg)成都麻羊、金堂黑山羊、乐至黑山羊、自贡黑山羊和建昌黑山羊相应分别为46.15±1.78,101.67±4.93,85.76±3.36,54.32±6.64和36.65±2.65,成都麻羊极显著低于金堂黑山羊、乐至黑山羊(P<0.01),而极显著高于建昌黑山羊P<0.01)与自贡黑山羊差异不显著(P>0.05);乳中常规营养成分含量(g/L)均较高,范围乳脂为58.59～60.52、乳蛋白为44.18～46.37和乳糖为44.00～47.30;经产母羊常乳主要蛋白组分的相对含量(%)范围α-La为5.35～5.80,β-Lg为14.46～15.18,CN为70.04～71.01,IgG为7.04～7.31,SA为2.02～2.15,品种间差异不显著(P>0.05);酪蛋白电泳染色显示出α-CN和β-CN图带,α-CN均呈现4种不同的带型αS1-CN(H),αS1-CN(L)、αS2-CN(CC)型和αS2CN(CD),其中均以αS2-CN(CD)占优势.β-CN呈现单态,带型为β-CN(AB).     

家兔超数排卵的初步试验

本研究对家兔超排各种处理方法的超排效果进行了比较,并对处理过程中外周血浆 P 及17β～E_2的变化情况进行了放射免疫测定。当 FSH 用于兔的超排时,持续处理三天对于保证 FSH 的超排效果是必需的。FSH 的超排效果显著优于 PMSG(P<0.05),但在注射 PMSG 的同时注射10—12单位 FSH 则可使 PMSG 的超排效果有所提高。受试兔重复处理后,排卵数降低不明显(P>0.05),仅胚胎收集数明显下降(P<0.05),这说明重复处理对受试兔的超排反应的影响不明显,胚眙收集数下降可能是由于手术后的粘连所致。胚胎收集数与处理瞬前及输精瞬前的 P 浓度成负相关(r=-0.3616,-0.4334,P<0.05),与17β—E_2浓度成正相关(r=0.5036,0.5055,P<0.01);且受试兔经 PMSG 处理后的 P 升高幅度远较FSH 处理后为大(P<0.01)。由此说明:PMSG 超排效果较差的原因可能是其 LH的活性较高,引起卵泡的黄体化及带血卵泡的形成所致。     

绵羊胚胎移植受体同期化处理技术研究

采用ＰＧ注射、ＭＡＰ口服或明道理植以及与不同促性腺激素和释放激素配合对受体母羊进行同期化处理，共分三次试验１１组１９种处理。０．０５ｍｇＰＧ间隔１１天两次阴唇注射；４５ｍｇＭＡＰ阴道埋植１０天，撤栓同时注射ＰＧ０．０５ｍｇ，ＰＭＳＧ３００ＩＵ，ＬＲＨ—Ａ３１００单位，４８ｈ注射ＬＨ２０单位以及埋植ＭＡＰ４５ｍｇ１０天，撤栓同时注射ＰＧ０．０５ｍｇ，ＰＭＳＧ３００ＩＵ，第１３天注射ＬＲＨ－Ａ３３００单位、ＬＨ１０单位，第１１～１３天每日两次注射ＦＳＨ５０×２和２０×２。受体母羊处理后７２ｈ发情同期化、排卵母羊率、卵巢黄体率分别为１００％、１００％．１００％；８３％、１００％、１００％和且６６％、１１６％、２０Ｏ％、供一受体同期时间差零天、－１、＋１天的移植妊娠率分别为５０％、１００％、１００％；１００％、５０％、１００％和０、０、０，受体总移植妊娠率分别为５０％、７５％和７５％，两个对照组以上指标分别为９０％、１００％，１００％、１１３％，５０％、６０％，７５％、７５％，５０％、５０％和５０、０％。结果表明受体同期化处理明显提高了移植妊娠率（Ｐ＜０．０５）。     

淫羊藿苷对更年期综合征模型大鼠的实验

目的:探讨淫羊藿苷对更年期综合征(CS)的影响.方法:将40只雌性大鼠随机分为假手术组、模型组、淫羊藿苷低剂量治疗组(质量分数为25 mg/kg)、中剂量治疗组(质量分数为50 mg/kg)和高剂量组(质量分数为100 mg/kg)5组,每组8只.除假手术组外,其余各组大鼠去势4周,复制CS动物模型后,分别给予灌胃相应的生理盐水和药物60 d,采用放射免疫分析法检测各组大鼠血清雌二醇(E_2)、卵泡刺激素(FSH)、黄体生成素(LH)以及下丘脑β-内啡肽(β-EP)的含量,放射配体结合分析法检测子宫、脾脏雌激素受体(ER)水平.结果:与假手术组相比,模型组大鼠E_2、下丘脑β-EP以及子宫、脾脏ER表达量显著性下降(P0.05),血清FSH与LH表达量显著性升高(P0.05).与模型组相比,淫羊藿苷低、中、高剂量治疗组模型组大鼠E_2、下丘脑β-EP以及子宫、脾脏ER表达量显著性上升(P0.05),血清FSH与LH表达量显著性降低(P0.05),且淫羊藿苷剂量越高,治疗效果越高.结论:淫羊藿苷对更年期综合征有治疗作用.     

四川各地黑山羊品种(群体)的泌乳力与羔羊的生长发育

采用羔羊哺乳前、后体重差法,测定四川各地黑山羊品种(群体)哺乳母羊的产乳量,用常规方法测定乳的常规营养成分.结果表明,产乳量(kg)范围为23.28±0.71～101.67±4.93,以金堂黑山羊(101.67±4.93)和乐至黑山羊(85.76±3.36)最高,营山黑山羊(23.28±0.71)、建昌黑山羊(36.60±2.65)和嘉陵黑山羊(40.11±1.02)最低,江安黑山羊(62.15±3.25)和自贡黑山羊(54.32±6.64)居中,金堂黑山羊和乐至黑山羊产乳量比较差异不显著(P>0.05),两者与其他品种(群体)比较,差异均极显著(P<0.01).在乳的常规营养成分中,乳蛋白含量(g/L)范围41.36～46.37,以金堂黑山羊(46.37)最高,营山黑山羊(41.36)最低,差异显著(P<0.05);乳糖含量(g/L)范围为44.00～47.30,以金堂黑山羊(47.30)最高,建昌黑山羊(44.00)最低,差异不显著(P>0.05);乳脂含量(g/L)范围为55.45～60.52,以自贡黑山羊(60.52)最高,白玉黑山羊(55.45)最低,差异显著(P<0.01).羔羊哺乳期公母平均日增重(g)范围73.50～174.42,以乐至黑山羊(174.42)和金堂黑山羊(167.75)最高,建昌黑山羊(73.50)、嘉陵黑山羊(94.59)和营山黑山羊(96.00)最低,自贡黑山羊(149.59)和江安黑山羊(127.67)居中.     

母牛同期发情技术探讨

阐述了母牛同期发情技术的机理,介绍了用于母牛同期发情的激素。给出了用氯前列烯醇诱导晋南黄牛同期发情效果的观察结果——受胎率为62%(相当正常水平)。认为该方法是成功的,具有实用价值,并为胚胎移植冷配等工作提供了依据。     

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.