醋酸厂含碘废液中碘的吹出实验研究

对含碘0.28%-0.3%的醋酸废液中碘的回收为研究对象,在确定氧化剂用量的基础上对碘的吹出萃取过程中影响吹出效果的各因素进行实验测定,从理论上分析过程中的各因素对碘的吹出影响,为下步碘的还原吸收过程及碘产品获取奠基。在最佳工艺条件下对实验结果进行验证,碘的吹出率可达到92%.     

实验室废碘液中碘的回收研究

研究了从实验室废碘液中提取碘的两种方法．第一种方法是利用氧化还原反应,采用分离、萃取、升华等工序回收废碘液中碘的工艺．另一种方法是利用氧化还原反应将废液中的l2还原为l^-,浓缩后加入工业级硫酸铜作沉淀剂,在适量还原剂存在的条件下使l^-全部转化为Cu2l2沉淀,然后加浓硝酸氧化之获得单质l2的工艺．通过实验得知,这两种方法所得的碘纯度高、回收率高．     

回收碘的研究

主要介绍了磷化工厂含碘烟气中碘元素通过富集，沉淀回收的方法。对碘的回收的影响因素很多，主要讨论温度、pH值、沉淀剂的种类与碘回收的关系，并且通过实验找出最佳的工艺参数并确定经济合理、适用性广的工艺流程。     

黄磷生产废水中碘的提取实验研究与机理探讨

针对含碘60-140 mg/l的循环水进行提碘回收实验,得到含95%-98%粗碘。通过设计正交实验测出不同条件下吹出液中的碘含量,进而求出其对应的吹出率,采用极差分析得出回收黄磷废水中碘的最佳工艺条件。     

用碘--碘化物溶液从含金矿石中提取金

考虑不同电解液中影响金溶解的热力学因素,由热力学计算结果绘制25℃时的金--碘--水体系的Eh-pH图,分析得到金-碘系统在水环境中的稳定区域：pH=0～14;结合对碘化浸金热力学、动力学的分析,在浸金实验的基础上,分析碘浸出金的机理;以碘-碘化物为浸出剂,实验研究含碳矿石中金的溶解,讨论金萃取的反应时间、碘-碘化物质量分数、pH对浸出的影响,并与氰化物的浸出结果进行对比;探讨从浸出液中回收金及碘的再生方法.所得金浸出的合理条件为：碘的质量分数在0.8%～1.0%,n（12）：n（I^-）=1：8～1：10,助氧化剂双氧水质量分数在1%～2%,浸出时间为4h,液固比在3：1～5：1,浸出温度为常温,矿浆为中性或酸性.金的浸出率可达93%以上,浸出液中的金和碘均可用电解方法回收.分析证明,在达到相同浸出率的情况下,与氰化法相比,碘化法浸出时间短、综合成本低.     

碘电极测定饮用水中的碘和碘离子

应用碘电极,采用亚砷酸钠为碘的还原剂进行前处理,选用磷酸二氢钠为总离子强度缓冲液,测定了总碘及碘离子含量.建立的方法对三碘树脂净水器净化后的水进行了测定,结果良好.当总碘和碘离子的浓度在10-7～10-4范围内时,相关系数为0.999 9,回收率大于98.1%.由实验测定的电位选择系数可见,该法选择性好,检测下限低.     

碘回收热交换器腐蚀机理研究及设备选型

对萃取磷酸回收碘工艺中的含碘的强氧化性气氛对换热器各部位腐蚀情况进行了分析.探讨了复杂工况条件下,腐蚀产生的原因,提出了解决方案.     

化学反应速度和活化能实验废液中碘的快速回收及测定

利用氧化还原反应原理，采取了萃取、升华和蒸馏等操作方法，提出一种从化学反应速度和活化能实验废液中快速回收碘的新方法，并采用碘量法对其含量进行测定，该法简单、快速地从废液中成功回收碘且回收率高。     

从含CuCN的CuI废渣中回收碘

在生产液晶的一种废渣中含有大量的ＣｕＩ和微量的ＣｕＣＮ。随着碘的市场价格上涨，从废渣中回收碘变得越来越有意义。为了从废渣中回收碘，选择合适的方法——氧化法提取单质碘，不使其中ＣＮ－形成气态形式而逸出。氧化剂采用ＦｅＣｌ３。对ＣＮ－的含量进行测定。对于提出的粗碘采用水蒸气蒸馏法进行提纯分析，确定一套安全有效的工艺流程：在室温下，用ＦｅＣｌ３饱和溶液与废渣一起搅拌反应０．５ｈ以上。回收率达８５％左右。     

邻碘和邻溴苯胺的合成

本文以邻硝基苯胺为原料,经过重氮化,卤代,还原反应,制得邻碘苯胺和邻溴苯胺;针对采用文献合成方法中出现的一些问题,采用改变加料顺序、介质条件和增加水蒸气蒸馏进行分离操作等方法进行了工艺改进,提高了邻硝基碘苯收率(收率87.5%)和邻硝基溴苯的纯度(纯度96.6%).     

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.     

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.     

A computer generator for randomly layered structures

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

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

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.