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1.
运用傅立叶变换红外光谱(FT-IR)对水/NaDEHP/正同乳体系中水的微结构进行了研究。结果表明:随着体系中加水量的增大,水分子O-H伸缩振动红外吸收峰的频率由3385cm^-1向高频在移动至3417cm^-1(与AOT形成的乳体系的变化趋势相反)。进一步地3050cm^-1至3750cm^-1范围内的水O-H伸缩振动吸收峰进行曲线拟合,得到4个子峰,说明微乳体系中的水分子存在有4种不同的配位环  相似文献   

2.
氮化碳薄膜的红外吸收光谱(FTIR)研究   总被引:2,自引:0,他引:2  
测量了采用RF-CVD方法制备的氮化碳薄膜的FTIR曲线,膜层中的C-N键、石墨相、C=N键和C≡N键的红外吸收峰波数分别为1250cm^-1,1576cm^-1,1687cm^-1和2054cm^-1。采用技术措施避免石墨相析出的氮化碳薄膜,其红外吸收谱只出现了C-N键的伸缩振动吸收峰(948cm^-1),薄膜中的其它功能基团的存在对C-N键的振动频率有一定的影响。  相似文献   

3.
以CO探针分子的IR研究表明,在Pd/HM上,钯还原前后具有不同对CO的线式吸附态。还原前分别在2156cm^-1和2045cm^-1处有两个IR吸收峰;而还原后在2000cm^-1附近出现几个重叠在一起的IR吸收峰,2156cm^-1处小峰几乎消失,这是因为Pd^2+PUHCGIP DR XH FHN R  相似文献   

4.
聚吡咯苯甲烯及其铜螯合物的红外光谱表征   总被引:2,自引:0,他引:2  
用红外光谱研究吡咯、苯甲醛在常温和酸催化条件下缩聚合成的新型大π共轭高分子,红外光谱信息表明,醛基(2734、1701cm-1)已经消失,出现了与苯环共轭的α-碳双键取代基(1576cm-1)和吡咯环的-C=N-键(1491cm-1).这意味着产物为聚吡咯苯甲烯.吡咯N-H(3423cm-1的消失和C-H面内变形振动频率的特征位移,启示了含铜产物为聚吡咯苯甲烯一铜螯合物.  相似文献   

5.
测定了碱土金属邻苯二甲酸氢盐的晶体结构,Ca(C8H5O4)2.2H2O为正交晶系,属C2v^7-Pmn21(No.31)空间群,晶胞参数为α=2.7482,b=0.9425,c=0.6926nm,Z=4;Sr(C8H5O4)2.2H2O是正交晶系,属C2v^1^2-Cmc21(No.36)空间群,晶胞参数为α=2.8465,b=0.879,c=0.6980nm,Z=4,Ba(C8H5O4)2.H  相似文献   

6.
高温热解聚硅烷制备SiC薄膜初探   总被引:1,自引:0,他引:1  
用组合成的可溶性聚硅烷1710A作涂膜材料,进行不同温度的真空热解或高纯氮下热解实验。通过IR谱和XPS谱分析,在790-810cm^-1和1270cm^-1红外吸收特征峰分别对应Si-CH3摇摆振动和伸缩振动吸收峰,XP-Si谱给出Si(2P)结合能力为101.6eV,CIS为284.3eV,证明有α-SiC:H生成。  相似文献   

7.
复合增聚型铁铝无机高分子絮凝剂PAFCS的红外光谱研究   总被引:13,自引:0,他引:13  
利用煤矸石及硫铁矿渣制备出了一种新型无机高分子絮凝剂聚硫酸氯化铁铝(PAFCS),研究了PAFCS的红外(IR)光谱结构特征.IR谱分析表明PAFCS是Fe(Ⅲ)十Al(Ⅲ)与羟基(-OH)以双羟桥为主结构连接的较复杂的高聚物.其IR图谱峰形与α-Fe2O3,α-FeOOH及Fe(OH)3等明显不同.比较了PAFCS,PAC,PFS,PACS的光谱特征,表明PAFCS与已知文献报道的絮凝剂PAC,PFS,PACS有类似性,即由3100~3600cm(-1)处的OH伸缩振动及1600~1650cm(-1)H-O-H弯曲振动的畸变,表明有结构羟基存在;在1100cm(-1)附近M-OH-M伸缩振动峰为中等强度峰,证明有铁羟基或铝羟基以及聚合态存在.  相似文献   

8.
ZnCl2与POM的合成和结构   总被引:1,自引:0,他引:1  
ZnCl2与POM生成1:2加成物「Zn(POM)2Cl2」,C12H12Cl2N4O6Zn,晶体必三科晶系,空间群为P1,晶胞系数为a=11.755(11)×10^-10m,b=12.3574(7)×10^-10m,c=6.592(4)×10^-10m,a=102。732(5)°,β=92.074(6)°,γ=110.124(60°,V=876.2×10^-30m,MR=444.53,z=2,d  相似文献   

9.
负载型水相膦铑配合物催化剂上丙烯氢甲酰化制丁醛   总被引:4,自引:0,他引:4  
用连续流动加压微反-色谱装置评价了负载型水溶性膦铑催化剂对丙烯氢甲酰化制丁醛的反应活性,结果表明,催化剂活性与体系与中水含量密切相关,适量的水可使催化剂活性明显提高,原位红外光谱考究结果显示,当催化剂吸附CO时在2040,2012,1901cm^-1等处出现一系列可归属于可逆吸附CO物种的伸缩振动带;通和原料气丙烯/CO/H2时,很快可观察到-1714cm^-1附近的醛基吸收峰。  相似文献   

10.
高吸水聚丙烯酸钠的表征   总被引:6,自引:0,他引:6  
对高吸水聚丙烯酸钠进行了FTIR、DSC、热稳定性、吸湿性能的分析,结果表明:在1629cm^-1,1562cm^-1,1457cm^-1处出现-COONa的羰基伸缩振动峰,在1407cm^-1出现了-COOH的羰基弯曲振动峰;残留水分对高吸水聚丙烯酸钠有很大的增塑作用,很难用DSC直接对其Tg进行表征;高吸水聚丙烯酸钠具有良好的热稳定性和较高的吸湿性,并发现水湿在0.5~99℃范围内对高吸水聚丙  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
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。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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