长白山树舌水溶性多糖研究—F_B·F_C的分离纯化与结构确定

长白山野生树舌子实体经分离纯化获得另两个以甘露糖为主的多糖 F_B和 F_c。经超离心,电流泳 sepharose 4B 凝胶柱层析等检验.表明二者皆为均一多糖。经G.C..高碘酸氧化,Smith 降解,部份酸水解,甲基化分析,I.R,G·C-M.S 试验等表明:F_B 是由1→3甘露糖残基构成主链,分支点及分支比例均较大;F_c是由1→6和1→4甘露糖构成主链,分支较少。     

树舌、茯苓多糖的提取分离及组成

对树舌(Ganoderma apparatus)、茯苓(poria cocos)多糖的提取、纯化和单糖的组成成分进行了研究.认为树舌子实体和茯苓菌核经热水提取、脱色和乙醇沉淀分别得到相应多糖(树舌多糖Ga,茯苓多糖Pc)粗品,多糖粗品经脱蛋白,乙醇分级沉淀、Sephadex G-15葡聚糖凝胶柱层析纯化得Ga-1、Ga-2、Ga-3和Pc -1、Pc -2、Pc -3 3个级分,并应用薄板层析技术,确定树舌多糖3个级分均由葡萄糖、树胶醛糖、甘露糖、果糖及一种未知单糖组成,茯苓多糖3个级分均由葡萄糖、甘露糖、核糖及一种未知单糖组成.     

美白化妆料制法二例

含壬二酸—尿素包结物的组成物可作为美白化妆料,对雀班、色黑有减轻作用。例一、其成份为: 1.液体石蜡 5.0份 2.凡士林 2.0份 3.蜂蜡 0.8份 4.山梨梨醇酐单硬脂酸酯 0.8份 5.聚氧化乙烯十六酯(20E、D) 1.2份 6.甲基蛋氨酸 0.2份 7.羧基乙烯聚合物(1％水溶液) 20.份 8.氢氧化钾 0.1份 9.精制水 63.2份 10.壬二酸—尿素包结物 2.0份 11.丙二醇 5.0份     

基于渔捞日志的海阳近海渔业资源组成及其生物多样性分析

根据2016—2018年海阳市信息船的渔捞日志,对海阳市近海渔业资源组成进行分析,结果表明渔获量较高的月份多集中在3—5月份和9—11月份,春汛和秋汛明显;共发现渔获物29种,隶属于17目24科29属,3年全是优势种的种类只有鳀,2年是优势种的种类有黄鮟鱇、蓝点马鲛、青鳞小沙丁、口虾蛄和海蜇,优势种年间更替较明显.秋季多样性指数(0. 30～1. 53)和丰富度指数(0. 57～1. 51)均较高.春季多样性指数(0～0. 94)和均匀度指数(0. 63～1. 00)较高,春季多样性指数低于秋季.秋季各月渔业资源群落结构相似性较高.     

开拓戈鲁辛和夏尔绳斯基的几个定理

1.S表示|z|<1中正則且單葉的函數f(z)=z+a_2z~2+…的全體所成之族。∑表示在區域|ζ|>1中半純且單葉的函數F(ζ)=ζ+α_0+(a_1/ζ)+…的全體所成之族。 設f(z)/f＇(0)∈S,且當|z|<1時|f(z)|<1。當f＇(0)≥T,(01上是正則,單葉的,     

B介子稀有衰变与K-M矩阵

本文在已给出的K—M矩阵U(λ_1,λ_2)基础上,研究了衰变过程B→Kl+l~-+X.三代情形,分支比主要依赖 m+且不确定性很小.四代情形时,比值可有较大增长,我们讨论了分支比与相位φ_(ij)以及质量m_(tt)之间的关系,特别是λ_2对分支比的影响十分显著.     

抽象距离空间的秩的概念

引言“距离几何”的基本思想应当說在上一世纪末已經由比利时的Tilly明确提出了。Tilly引进的半度量(Semi—Metric)的概念后經Fréchet发展成为(在增加了三角形不等式之后)度量和度量空間(Metric Space)的重要概念。作为几何学的一个分支而言,距离几何(Distance Geometry)的真正基础是由K.Menger于1928年—1931年间的四篇論文中奠定的。在Menger工作的基础上,这一几何分支于30—40年代有一些发展,例如可参看L.M.Blumenthal的专著《Theory and     

左右对称弱电理论中新规范玻色子的衰变

本文为提交1985年国际轻子光子会议论文的一部分,文中计算了 SU(2)_L×SU(2)_R××U(1)_(L R)弱电理论中新规范玻色子的衰变宽度和分支比.结果表明:具有丢失能量的衰变模式可达20—30%的分支比。     

江西鄱阳湖鲤鱼洲白鹤小镇鸟类多样性研究

采用样点法对江西省鄱阳湖鲤鱼洲白鹤小镇及其周边2017—2020年的鸟类多样性进行了调查,共记录鸟类15目40科115种; 其中有国家Ⅰ级保护动物4种:东方白鹳(Ciconia boyciana)、黑鹳(Ciconia nigra)、中华秋沙鸭(Mergus squamatus)和白鹤(Grus leucogeranus),国家Ⅱ级保护动物12种.在居留型方面,研究区以冬候鸟为主,共有42种,占记录总数的36.52%; 在区系方面,古北界的种类最多,有52种,占记录总数的45.22%.2020年8—9月,对白鹤小镇及其周边秋季鸟类多样性进行了定量研究,共调查到秋季鸟类13目33科75 种,其中有国家 Ⅱ 级保护动物2种,分别是红隼(Falco tinnunculus)和小鸦鹃(Centropus bengalensis).优势种有灰翅浮鸥(Chlidonias hybrida)、中白鹭(Egretta intermedia)和斑嘴鸭(Anas zonorhyncha)等.8月份的鸟类多样性指数(4.33)和均匀度指数(0.76)均高于9月份,9月份的优势度指数(0.18)高于8月份.白鹤小镇及其周边鸟类资源丰富,研究结果对加强白鹤小镇水鸟监测和保护具有借鉴意义.     

不同混合物浓度梯度下三重火焰的直接数值模拟

针对三重火焰,采用详细反应机理进行直接数值模拟(DNS),计算其入流宽度.在保证混合物入口当量比范围保持不变的情况下,计算了入流宽度分别为5、10、15、20、25和30 mm等6种状态下的羟基(—OH)质量分数、流场速度、放热率、燃烧速度和温度的分布.研究结果表明:随着入流宽度的增加,即混合物浓度梯度的减小,三重火焰厚度逐渐增加,且预混火焰分支变长.同时,三重点和预混分支处—OH质量分数逐渐增大,而扩散火焰分支处—OH质量分数逐渐减小.由于入口混合物当量比的范围保持不变,导致预混火焰厚度几乎不随入流宽度发生改变,且三重点处火焰速度在混合物浓度梯度为0.0511～0.2950 mm-1时存在一个极大值.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.