查询词典 chrome

The drying process of chrome liquor was studied. The structure and property of chrome complex reducing by alcohol were analysed and tokened by many present well-rounded separation and analysis methods such as IR, UV-Vis Spectrum, IEC and pH potentiometry. Application tests of chrome tanning agents were conducted and tanning methods of tanning at high pH were studied. A systematic study was conducted on high alkalinity chrome tanning agents application in leather making process and possibility of clean chrome tanning was discussed.

本文系统地研究了多种小分子醇与重铬酸盐之间的氧化-还原反应，对反应过程进行了认真的剖析；对铬鞣液的干燥过程进行了研究；用红外光谱法、紫外及可见分光光度法、离子色谱法以及pH电位滴定法等多种比较成熟的现代分离分析方法相结合，对醇还原铬配合物的结构与性能进行了分析与表征；对铬鞣剂的鞣革性能进行了应用实验，研究了醇铬鞣剂在高pH值下的鞣制方法，并就高碱度铬鞣剂在制革过程中的应用进行了系统研究，探讨了用其实施清洁化铬鞣的可能性。

The drying process of chrome liquor was studied. The structure andproperty of chrome complex reducing by alcohol were analysed and tokened by manypresent well-rounded separation and analysis methods such as IR, UV-Vis Spectrum,IEC and pH potentiometry. Application tests of chrome tanning agents wereconducted and tanning methods of tanning at high pH were studied. A systematic studywas conducted on high alkalinity chrome tanning agents application in leather makingprocess and possibility of clean chrome tanning was discussed.

本文系统地研究了多种小分子醇与重铬酸盐之间的氧化-还原反应，对反应过程进行了认真的剖析；对铬鞣液的干燥过程进行了研究；用红外光谱法、紫外及可见分光光度法、离子色谱法以及pH电位滴定法等多种比较成熟的现代分离分析方法相结合，对醇还原铬配合物的结构与性能进行了分析与表征；对铬鞣剂的鞣革性能进行了应用实验，研究了醇铬鞣剂在高pH值下的鞣制方法，并就高碱度铬鞣剂在制革过程中的应用进行了系统研究，探讨了用其实施清洁化铬鞣的可能性。

In conclusion, not only the methods and relative situation of extracting Cr from chrome slag but also the feasibility of producing yellow chrome by using chrome slag"s leachate were studied in this dissertation. All these study will provide necessary theoretical basis for the industrialization of producing yellow chrome from the chrome slag"s leachate.

本论文研究的创新之处在于：本研究以从铬渣中提取六价铬作为立足点，消除了解毒后的铬遇氧化条件毒性恢复的可能，利用回收的六价铬制取铬黄颜料的研究初步证明，该法不仅切实可行，而且成本低廉、效益好。

The results show that the shrinkage temperature of the leather tanned with QUIMITAN ABC is 101.4℃, and the physical-mechanical properties of QUIMITAN ABC tanning leather are better than that of chrome powder tanning leather; the content of Cr2O3 (0.4142 g/L) in the float of QUIMITAN ABC tanning is lower than that of the content of Cr2O3 (1.9481 g/L) chrome powder tanning, it's clear that QUIMITAN ABC tanning is good for Cleaner production; under the same content of chromic oxide, the physical properties of retanning leather with QUIMITAN ABC are better than that of retanning leather with chrome containing sytan and chrome powder, such as thichkening, flexibility, physical-mechanical properties.

结果表明：QUIMITAN ABC主鞣后的坯革的收缩温度为101.4℃，且其坯革物理力学性能高于用6%的铬粉主鞣后的坯革；QUIMITAN ABC主鞣后的废液Cr2O3含量(0.4142 g/L)明显低于用6%的铬粉主鞣后废液Cr2O3含量(1.9481 g/L)，用QUIMITAN ABC主鞣有益于清洁化生产；在Cr2O3含量相同的情况下，用QUIMITAN ABC复鞣的坯革在增厚率、柔软度、物理力学性能等方面都要好于含铬鞣剂及铬粉复鞣的坯革。

In this paper,the various methods of reclaiming chrome and collagen from chrome effluent and chrome-tanned leather sc...

本文就此问题着重介绍了如何从铬鞣废液及铬鞣革屑中回收铬及皮胶原，并将其重新用于皮革工业。

Chrome-tanning process is still very important in leather industry for its special tanning properties.This process can produce some chrome effluent and chrome-tanned leather scraps,the reject of which not only can contaminate the environment but also can cause great economic losses.

铬鞣因其优异的鞣制性能，在制革工业中仍占据着重要地位，但由铬鞣产生的各种污染如铬鞣废液、铬鞣革屑等对环境具有极大危害，这些废液及材料的直接排放和丢弃，还会造成很大的经济损失。

It is very important to study the composition of chrome tanning liquors for elucidating the reaction mechanism of collagen and chrome coordination compounds and directing practical chrome tanning process.

研究铬鞣液的组成及各种铬配合物在铬鞣过程所起的作用，对于阐明铬鞣机理和实际的铬鞣操作过程有重要的指导意义。

In two-stage chrome tanning process,the chrome absorptivity can be increased from 86.80%to 99.09%,and the chrome fixation can be increased from 76.07%to 90.21%by the same treatment.

由于胶原对铬的吸收率和固定率的提高，常规铬鞣时可将标准铬粉的用量由传统的6%减少到4%，。

Because of the enhancement in chromium absorptivity and fixation,the dosage of normal chrome powder can be reduced from 6%to 4%in conventional process,and can be reduced from 6%to 3%in two-stage chrome tanning process,and thus the chrome absorptivity and fixation can be enhanced further.

两步铬鞣时可将标准铬粉的用量由传统的6%减少到3%，这时铬的吸收率和固定率还会进一步提高。

According to the practical needs of chrome-free tannage, titanium is abundant in nature, easily obtainable and ecologically friendly, titanium tannage can produce a leather with similar performance to chrome-tanned leather, so the research of titanium tannage to alternative chrome tannage was established as the research direction of this thesis. The preparation of novel titanium tanning agent, factors affecting titanium tannage, titannium tannage mechanism and titanium combining tannage were studied.

本文从对非铬鞣体系的实用性要求出发，在对几种常用金属盐鞣剂的鞣性和鞣革综合性能的分析基础上，并结合它们的资源和毒性等方面的因素，提出了钛鞣是理想的铬鞣的替代鞣法的观点，确定了以资源丰富、无毒和鞣革综合性能好的钛盐代替铬盐的研究方向，研究了新型钛鞣剂的制备方法、影响钛鞣的因素，并对钛鞣机理和钛结合鞣法等方面进行了深入的研究。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。