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1.
网点是决定原色染料网目阶调印花质量的关键问题,并受织物织构的直接影响,建立了织物单元组织孔洞的数学模型,用实验证明了织物组织结构与网点大小之间存在一定的分配数量关系,获得了准确的网点参数,该技术工艺符合一般网点印花规律。  相似文献   

2.
网点是决定原色染料网目阶调印花质量的关键问题,并受织物结构的直接影响。建立了织物单元组织孔洞的数学模型。实验结果证实了织物组织结构与网点大小之间存在一定的分配数量关系,并获得了准确的网点参数。还提出了进一步研究的新课题。 (将发表在《西安理工大学学报》2001 Vol.17 No.2)  相似文献   

3.
提出了一种用于原色染料网目阶调印花中的新坐标色差评价方法.建立了新坐标色差评价的数学模型,并用实验进行了验证.该方法能准确计算色相差和彩度差,从而保证了阶调印花质量.  相似文献   

4.
现有的羊绒印花制品多数为直接印花、数码印花,对于羊绒制品拔染印花的研究几乎未见任何报道.采用拔染印花方法可以扩大山羊绒印花制品的花色品种和适应范围,为消费者提供更广阔的选择空间,大大提高产品的附加值,使产品档次和品位得到提升.由于山羊绒纤维性能的独特性,其制品的拔染印花工艺就显得比较复杂繁琐.本文主要对羊绒制品拔染印花地色染料、耐拔印花染料的选择进行了分析,探讨了烘干、蒸化、水洗工艺对拔染效果的影响规律,并对拔染工艺进行了优化实验.研究结果表明,酸性多丽兰黄EGG、黄E2R、红E2R、黑MG及部分活性染料,具有较好地拔白效果,是可拔地色染料的良好选择,兰纳芯染料的各项染色牢度指标均较高,是山羊绒制品进行色拔印花的良好着色染料.经优化得出的拔白工艺参数为:朗茄烈C用量为12%、蒸化温度为95℃、蒸化时间为50min、尿素用量为3%、甘油1%、冰醋酸2%、柠檬酸1%.  相似文献   

5.
阶调印花中新坐标色差评价方法研究   总被引:1,自引:1,他引:0  
提出了一种用于原色染料网目阶调印花中的新坐标色差评价方法。建立了新坐标色差评价的数学模型, 并用实验进行了验证。该方法能准确计算色相差和彩度差, 从而保证了阶调印花质量。  相似文献   

6.
采用固色剂WF用于活性染料直接印花的快速固色,并与常规印花进行比较。探讨固色剂WF对印花织物的表观色深、印花色度、染料的提升性、印花牢度的影响。研究结果表明:在活性染料印花快速固色中,固色剂WF的加入,表现出较高的表观色深,使印花织物的明度有较大提高,彩度与常规印花标样接近。固色工艺参数的波动,对印花色度影响不大。染料的提升性高于常规印花,活性染料印花织物的皂洗牢度和摩擦牢度均达到较高水平。  相似文献   

7.
本文主要研究升华转移印花工艺,探讨了转移印花中各工艺条件对染料上染率的影响,并筛选出转移印花相对最优工艺。根据实验结论得出实现高温快速转移印花的可行性。并提出以后主要的研究内容。  相似文献   

8.
主要研究薄型涤纶深底色碱剂拔染印花工艺,并对底色染料和着色染料的合理筛选和改善花纹轮廓精细度等问题进行研讨。  相似文献   

9.
简要介绍了纺织品数码喷墨印花技术的发展现状以及喷墨印花工艺对墨水的一般技术要求,着重对喷墨印花墨水作了详细的介绍,并将喷墨印花墨水分为墨水和油墨两类.分别描述了墨水和油墨的国内外研究现状以及存在的问题和趋势,尤其对高分子染料作为喷墨印花墨水和油墨的发展作了详细的探讨.纺织品数码喷墨印花墨水的研制以及其应用开发对我国染料和纺织行业的发展有着重要的意义.  相似文献   

10.
由于涤纶是疏水性纤维,结构本身紧密,涤纶织物经高温高压染底色后采用氯化亚锡拔染印花必须借助于特殊的拔染印花助剂。本文研究了新拔染助剂WT-DA、有机酸、吸酸剂以及金属离子掩蔽剂对氯化亚锡拔染印花效果的影响,确定了各助剂的用量,并优化了汽蒸工艺条件,筛选了部分底色分散染料和着色染料。研究结果为:氯化亚锡拔染印花色浆由8份SnCI。,10~16份WT—DA,0.6份酒石酸,1~2份尿素,0.6~1份Na。SIO。和x份染料;印花后的汽蒸条件为190~200℃下汽蒸8~12min,相对湿度60%~70%;在此印花条件下,有9只底色染料和10只着色染料可用于拔染印花,拔染白度最高可达80%以上。  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.
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   

13.
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   

14.
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   

15.
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.  相似文献   

16.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

17.
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.  相似文献   

18.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

19.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

20.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

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