常规天然气分析标准对页岩气的适应性评价研究

针对川西地区中浅层长水平井钻进过程中存在的水平井段长易卡阻、砂岩泥岩交错易发生井壁失稳等难题,研制出了新型聚胺仿油基钻井液。该钻井液主要由具有强抑制作用的处理剂聚胺和主要作用为润滑和降滤失、兼具抑制功能的处理剂MEG(甲基葡萄糖甙)组成,具有高润滑性和强抑制性的特点,其抑制性能和润滑性能接近油基钻井液水平。现场应用表明,聚胺仿油基钻井液性能稳定、密度调节范围广、流变易于控制、滤失量小且泥饼薄而韧性好,能有效地抑制泥页岩水化分散,保持井壁稳定,满足川西长水平井段施工需求。     

渗透胁迫下外源多胺对水稻幼苗多胺及多胺氧化酶的影响

以湘早籼32号为材料,研究渗透胁迫下外源多胺对水稻幼苗多胺及多胺氧化酶（PAO）的影响.结果表明：在渗透胁迫下,水稻幼苗根系中游离态PAO、结合态PAO活性及Put、Spd、Spm含量呈上升趋势,外源Put明显促进游离态PAO、结合态PAO活性及Put、Spd、Spm含量的上升,结合态PAO活性是游离态PAO的9.8~15.65倍.通过相关分析得出：Put、Spd、Spm含量与游离态PAO、结合态PAO活性及游离态PAO与结合态PAO均呈正相关.     

两种预氧化法与氯胺消毒联用对polyamlne形成NDMA的影响

预氧化处理与有机高分子絮凝剂联用会使含氮消毒副产物亚硝基二甲胺(NDMA)质量浓度上升,典型水处理工艺条件下NDMA的质量浓度为60～100 ng/L,为了解不同因素的影响及其反应机理,研究次氯酸钠氯化预氧化及高锰酸钾预氧化与聚环氧氯丙烷二甲胺(polyamine)在不同条件下联用并用氯胺消毒后NDMA的生成量.结果表明:随着预氧化剂投加量、pH、polyamine投加量及Br-质量浓度的增加,NDMA的生成量也相应增加;低质量浓度NH_4~+会导致NDMA生成量增加17. 5%左右,但随质量浓度增加,NDMA生成量逐渐减少至初始水平;随着NO_2~-质量浓度增加,NDMA生成量显著减少,当NO_2~-的质量浓度达到10 mg/L时,NDMA的生成量为最初的15%左右;氯化预氧化过程符合UDMH机理,而高锰酸钾预氧化过程包含UDMH机理及羟基自由基机理.     

Exogenous Spermidine Alleviates Low Temperature Injury in Mung Bean (Vigna radiata L.) Seedlings by Modulating Ascorbate-Glutathione and Glyoxalase Pathway

The role of exogenous spermidine (Spd) in alleviating low temperature (LT) stress in mung bean (Vigna radiata L. cv. BARI Mung-3) seedlings has been investigated. Low temperature stress modulated the non-enzymatic and enzymatic components of ascorbate-glutathione (AsA-GSH) cycle, increased H₂O₂ content and lipid peroxidation, which indicate oxidative damage of seedlings. Low temperature reduced the leaf relative water content (RWC) and destroyed leaf chlorophyll, which inhibited seedlings growth. Exogenous pretreatment of Spd in LT-affected seedlings significantly increased the contents of non-enzymatic antioxidants of AsA-GSH cycle, which include AsA and GSH. Exogenous Spd decreased dehydroascorbate (DHA), increased AsA/DHA ratio, decreased glutathione disulfide (GSSG) and increased GSH/GSSG ratio under LT stress. Activities of AsA-GSH cycle enzymes such as ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR) increased after Spd pretreatment in LT affected seedlings. Thus, the oxidative stress was reduced. Protective effects of Spd are also reflected from reduction of methylglyoxal (MG) toxicity by improving glyoxalase cycle components, and by maintaining osmoregulation, water status and improved seedlings growth. The present study reveals the vital roles of AsA-GSH and glyoxalase cycle in alleviating LT injury.     

乙撑胺生产现状与市场分析

本文介绍了乙撑胺国内外生产现状、市场需求和发展趋势，我国与国外先进水平相比有较大差距，针对现状提出我国乙撑胺发展思路。     

A Novel Approach for Resolving Reverse Emulsions in SAGD Production Systems

The standard method for water clarification in SAGD operations involved the injection of latex polymers to break produced reverse emulsions. Operationally, this resulted in large quantities of oil in the water downstream of the first oil and water separation vessel. Problems occurred because this generated large amounts of oily solids and emulsion. This slop material represented a significant additional expenditure. Champion developed a novel approach to treat these systems and reduce slop. This program has been very successful in removing oil from the water stream during primary separation, thus reducing costs associated with reprocessing slop oil, and resulting in greater oil recovery.     

Hyperbranched polyamine: A promising curing agent for a vegetable oil-based poly(ester-amide) resin

A hyperbranched polyamine (HBPA) has been synthesized by a nucleophilic displacement polymerization of cyanuric chloride with an aromatic diamine, 4,4′-(1,3-phenylene diisopropylidene) bis-aniline by using an A₂ + B₃ approach with high yield (>78%). The synthesized polyamine was characterized by ¹H NMR, ¹³C NMR and FT-IR spectroscopic studies, X-ray diffraction study, elemental and thermogravimetric analyses and by measurement of solubility and solution viscosity. The polymer is soluble in polar solvents like DMAc, DMSO, DMF, THF, etc. but insoluble in water and non-polar solvents. The flame retardancy as measured by limiting oxygen index (LOI) test of the polymer indicates its self-extinguishing characteristic. This hyperbranched polyamine has been utilized as an effective curing agent for a Mesua ferrea L. seed oil-based poly(ester-amide) resin. This hyperbranched polyamine alone as well as with conventional metal catalyzed peroxide system is found to effectively cure the above resin at dose levels of 2.5–10 phr. The hyperbranched polyamine not only enhances the rate of crosslinking reaction but it also improves many desirable performance characteristics especially the thermostability, flame retardancy, hardness, impact strength, chemical resistance, etc. of the cured resin. Thus this study indicated that this hyperbranched polyamine acts as a promising curing agent for poly(ester-amide) resin.     

合成水性环氧固化剂的反应条件探讨

水性环氧固化剂一般采用多元胺-环氧加成物。固化剂中的伯胺基团亲水性较大，易与空气中的CO2反应生成碳酸胺，使漆膜泛白，固化不完全。为了降低固化剂中的伯胺基团含量，利用伯胺基团和仲胺基团与环氧基团反应的速率不同，通过调节反应温度和反应时间，使反应主要发生在伯胺基团上。通过试验，确定了合适的反应温度和反应时间。     

植物体中多胺代谢及其功能研究进展

多胺广泛参与植物的生长发育以及对各种环境胁迫的响应。综合介绍了多胺的生物合成,多胺的转运与降解过程;同时总结了植物体中多胺功能的研究方法,并对多胺研究的发展前景作以展望。     

部分季铵化聚胺的合成及抗静电性能评价

以十二胺、环氧氯丙烷、溴乙烷为原料合成了十二胺聚胺和不同季铵化度的十二胺聚胺,分别测定了产品的叔胺氮和季铵氮含量,研究了所合成聚胺及不同季铵化度聚胺对0#商品柴油电导率的改善效果以及与癸烯聚砜的复配效果。结果表明,聚胺单独使用时,季铵化度高的聚胺对柴油电导率改进效果稍好于未季铵化的聚胺。季铵化度高的聚胺与癸烯聚砜复配时,加剂量均为1 mg/L,柴油初始电导率从2~3 pS/m增加到545~565 pS/m,但储存后柴油电导率没有明显上升。未季铵化的聚胺与聚砜复配时,柴油初始电导率从2~3 pS/m增加到495 pS/m,储存3 d,柴油电导率增加至660 pS/m,1周内无明显下降。